1,365 results on '"Shu T"'
Search Results
152. A critical overview of measurement techniques of spacecraft charging in space plasma
- Author
-
Lai, Shu T., primary
- Published
- 1998
- Full Text
- View/download PDF
153. Inequality conditions for critical velocity ionization space experiments
- Author
-
Lai, Shu T. and Murad, Edmond
- Subjects
Ionosphere -- Research ,Business ,Chemistry ,Electronics ,Electronics and electrical industries - Abstract
This is a compilation of various parametric conditions for the critical ionization velocity (CIV) process to occur in the ionosphere.
- Published
- 1992
154. Treatment With Bortezomib-based Therapy, Followed by Autologous Stem Cell Transplantation, Improves Outcomes in Light Chain Amyloidosis: A Retrospective Study
- Author
-
Pierre Noel, Vishal S. Shah, Verónica González-Calle, Tania Jain, Susan Luft, Joseph R. Mikhael, A. Keith Stewart, Rafael Fonseca, Roberta H. Adams, Shu T. Kung, Amylou C. Dueck, Leif Bergsagel, Jeremy T. Larsen, Heidi E. Kosiorek, and Craig B. Reeder
- Subjects
Oncology ,Adult ,Male ,Cancer Research ,medicine.medical_specialty ,Immunoglobulin light chain ,Bortezomib ,03 medical and health sciences ,0302 clinical medicine ,Autologous stem-cell transplantation ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,medicine ,Overall survival ,Humans ,Immunoglobulin Light-chain Amyloidosis ,Progression-free survival ,Aged ,Retrospective Studies ,business.industry ,Amyloidosis ,Hematopoietic Stem Cell Transplantation ,Retrospective cohort study ,Hematology ,Middle Aged ,medicine.disease ,Combined Modality Therapy ,Survival Analysis ,Hematologic Response ,Treatment Outcome ,030220 oncology & carcinogenesis ,Female ,business ,030215 immunology ,medicine.drug - Abstract
The hematologic response is critical in patients with light chain amyloidosis because a good response is known to improve organ response and overall survival. We present a retrospective analysis to compare the hematologic and organ response in patients who received bortezomib-based therapy before autologous stem cell transplantation (ASCT) versus those who received non-bortezomib-based therapy before ASCT and those who underwent ASCT at diagnosis.Of a total of 63 patients who underwent ASCT for light chain amyloidosis, 34 received bortezomib-based therapy before ASCT (Bor-ASCT) and 29 did not receive bortezomib therapy (non-Bor-ASCT). A greater number of patients had involvement of ≥ 3 organs and cardiac involvement in the Bor-ASCT group, suggesting a greater risk at baseline in the Bor-ASCT group.At 3, 6, and 12 months after ASCT, the hematologic response was better in the Bor-ASCT group, with a statistically significance difference at 6 months (partial response or better in 82% vs. 20%; P = .002) and 12 months (partial response or better in 76% vs. 33%; P = .02). Organ responses (66% vs. 21%; P .001) and median overall survival (not reached vs. 53 months; P = .001) were also greater in the Bor-ASCT group.Our study has shown that bortezomib-based therapy before ASCT improves the hematologic response, organ response and overall survival, potentially by decreasing the light chain load before ASCT.
- Published
- 2018
155. Deep Dielectric Charging and Spacecraft Anomalies
- Author
-
Kerri Cahoy, Shu T. Lai, Whitney Lohmeyer, Ashley Carlton, Joseph I. Minow, and Raichelle Aniceto
- Subjects
Materials science ,Spacecraft ,business.industry ,fungi ,Charge density ,Electron ,Dielectric ,Space (mathematics) ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,law ,Physics::Space Physics ,0103 physical sciences ,Shielded cable ,Aerospace engineering ,business ,Material properties ,010303 astronomy & astrophysics ,Space environment - Abstract
This is an overview of deep dielectric charging on spacecraft. Spacecraft anomalies and failures may occur after exposure to energetic (MeVs) electron environments. These anomalies and failures typically occur with a delay time of days to weeks because it requires significant time for large charge density to accumulate on or in shielded spacecraft materials. This chapter discusses the relationship between deep dielectric charging and such spacecraft anomalies and failures. Deep dielectric charging and subsequent electrical discharging are not only related to severe space environment conditions in the vicinity of the spacecraft, but also depend on the spacecraft material properties which may change slowly in space as materials age from exposure to the space environment.
- Published
- 2018
- Full Text
- View/download PDF
156. Guest Editorial Spacecraft Charging Technology
- Author
-
Michael Bodeau, Virginie Inguimbert, Hideyuki Usui, Allen Andersen, Mengu Cho, Kazuhiro Toyoda, Shu T. Lai, Justin J. Likar, Insoo Jun, Jr Dennison, Michelle Donegan, Nelson W. Green, Henry B. Garrett, V. A. Davis, Dale C. Ferguson, Linda Neergaard Parker, Jean-François Roussel, and Joseph I. Minow
- Subjects
Spacecraft charging ,Nuclear and High Energy Physics ,Engineering ,Aeronautics ,business.industry ,Agency (sociology) ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Condensed Matter Physics ,business ,Aerospace ,Theme (computing) ,ComputingMilieux_MISCELLANEOUS - Abstract
This marks the seventh issue of the IEEE Transactions on Plasma Science dedicated to Spacecraft Charging Technology. The theme of this issue is based on the papers presented at the 15th Spacecraft Charging Technology Conference, Kobe, Japan, in 2018. The history of spacecraft charging goes back to the first Spacecraft Charging Technology Conference, sponsored by AFRL and NASA, that was held at the U.S. Air Force Academy, Colorado Springs, CO, USA, in 1978. The 15th Spacecraft Charging Technology Conference was hosted by the Japan Aerospace Exploration Agency (JAXA) and the Graduate School of System Informatics, Kobe University. It continues a tradition of international conferences on a ~2-year cycle. This conference, as well as each previous one in the series, was a great success. The topical discussions have greatly helped in making progress in the fields of spacecraft charging, spacecraft-plasma interactions, and related areas. At the end of the 15th Conference, the assembly agreed to request publication of the proceedings of the conference in the IEEE Transactions on Plasma Science and to encourage the submission of the papers presented at the conference to the Journal.
- Published
- 2019
- Full Text
- View/download PDF
157. Phylogeny of Libellulidae: are there relationships between molecular phylogenetics and morphological analysis of wing shape of dragonflies?
- Author
-
Huang, Shu T, primary, Wang, Hai R, additional, Yang, Wan Q, additional, Si, Ya C, additional, Wang, Yu T, additional, Sun, Meng L, additional, Qi, Xin, additional, and Bai, Yi, additional
- Published
- 2019
- Full Text
- View/download PDF
158. Guest Editorial Spacecraft Charging Technology
- Author
-
Andersen, Allen, primary, Bodeau, Michael, additional, Cho, Mengu, additional, Davis, Victoria A., additional, Dennison, Jr, additional, Donegan, Michelle, additional, Ferguson, Dale C., additional, Green, Nelson, additional, Inguimbert, Virginie, additional, Jun, Insoo, additional, Lai, Shu T., additional, Likar, Justin J., additional, Minow, Joseph, additional, Parker, Linda Neergaard, additional, Roussel, Jean-Francois, additional, Toyoda, Kazuhiro, additional, Garrett, Henry B., additional, and Usui, Hideyuki, additional
- Published
- 2019
- Full Text
- View/download PDF
159. Establishing a three-generation prospective study: Bogalusa daughters
- Author
-
Harville, EW, primary, Breckner, D, additional, Shu, T, additional, Cooper, M, additional, and Bazzano, LA, additional
- Published
- 2019
- Full Text
- View/download PDF
160. First lift-off and flight performance of a tailless flapping-wing aerial robot in high-altitude environments
- Author
-
Shu Tsuchiya, Hikaru Aono, Keisuke Asai, Taku Nonomura, Yuta Ozawa, Masayuki Anyoji, Noriyasu Ando, Chang-kwon Kang, and Jeremy Pohly
- Subjects
Medicine ,Science - Abstract
Abstract Flapping flight of animals has captured the interest of researchers due to their impressive flight capabilities across diverse environments including mountains, oceans, forests, and urban areas. Despite the significant progress made in understanding flapping flight, high-altitude flight as showcased by many migrating animals remains underexplored. At high-altitudes, air density is low, and it is challenging to produce lift. Here we demonstrate a first lift-off of a flapping wing robot in a low-density environment through wing size and motion scaling. Force measurements showed that the lift remained high at 0.14 N despite a 66% reduction of air density from the sea-level condition. The flapping amplitude increased from 148 to 233 degrees, while the pitch amplitude remained nearly constant at 38.2 degrees. The combined effect is that the flapping-wing robot benefited from the angle of attack that is characteristic of flying animals. Our results suggest that it is not a simple increase in the flapping frequency, but a coordinated increase in the wing size and reduction in flapping frequency enables the flight in lower density condition. The key mechanism is to preserve the passive rotations due to wing deformation, confirmed by a bioinspired scaling relationship. Our results highlight the feasibility of flight under a low-density, high-altitude environment due to leveraging unsteady aerodynamic mechanisms unique to flapping wings. We anticipate our experimental demonstration to be a starting point for more sophisticated flapping wing models and robots for autonomous multi-altitude sensing. Furthermore, it is a preliminary step towards flapping wing flight in the ultra-low density Martian atmosphere.
- Published
- 2023
- Full Text
- View/download PDF
161. Analysis of the Correlation between Time in Range and Diabetic Kidney Disease
- Author
-
SHU Tao, GUO Zheng, WANG Fei, CHEN Shuyan
- Subjects
diabetic nephropathies ,diabetes mellitus, type 2 ,time in range ,glomerular filtration rate ,root cause analysis ,logistic models ,Medicine - Abstract
Background Time in range (TIR) is a new indicator of glycemic management in diabetes mellitus which has been thriving in recent years. Studies have confirmed that TIR is closely associated with chronic complications of diabetes. Previous studies have confirmed a close association between TIR and chronic complications of diabetes. Current studies on TIR and diabetic kidney disease (DKD) mainly focus on proteinuria, however the role of glomerular filtration rate (eGFR) in it is often neglected, and there are few studies on the cut points of TIR in evaluating glycemic control. Objective To investigate the relationship between TIR and the development of DKD in type 2 diabetes mellitus (T2DM), so as to provide theoretical foundations for the timely clinical detection, diagnosis and treatment of DKD in patients with T2DM. Methods A total of 214 T2DM patients admitted to the Department of Endocrinology in Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from July 2021 to December 2021 were included. The general data, laboratory indices and medication use were collected. The included patients were divided into group of DKD〔UACR ≥ 30 mg/g and/or eGFR < 60 ml·min-1 (1.73 m2) -1, n=58〕 and group of T2DM alone〔UACR85%, n=90), TIR2 group (70%
- Published
- 2023
- Full Text
- View/download PDF
162. A multi-center, randomized, parallel-group study to compare the efficacy of enhanced cognitive behavior therapy (CBT-E) with treatment as usual (TAU) for anorexia nervosa: study protocol
- Author
-
Nobuhiro Nohara, Yukari Yamanaka, Mikiko Matsuoka, Tadahiro Yamazaki, Keisuke Kawai, Shu Takakura, Nobuyuki Sudo, Tetsuya Ando, Yutaka Matsuyama, Susan Byrne, Riccardo Dalle Grave, Zafra Cooper, and Kazuhiro Yoshiuchi
- Subjects
Adolescent ,Adult ,Anorexia nervosa ,Feeding and eating disorders ,Psychological treatments ,Randomized controlled trial ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Abstract Background The superiority of Enhanced Cognitive Behavior Therapy (CBT-E) with regard to weight gain and improvement of psychopathology of eating disorders for patients with anorexia nervosa (AN) over other psychotherapies and treatment as usual (TAU) has not been demonstrated in randomized controlled trials (RCTs). However, a previous RCT showed that patients with AN whose baseline body mass index (BMI) was less than 17.5 kg/m2 gained more weight when treated with CBT-E than with other psychotherapies. The aim of the study is to compare the efficacy of CBT-E and TAU for patients with AN. It was hypothesized that CBT-E would be superior to TAU, at least in terms of weight gain, as most patients with AN are likely to have a BMI lower than 17.5 kg/m2. Methods/design A randomized parallel-group multicenter trial will be conducted in three teaching hospitals in Japan between January 2023 and March 2026. Patients with DSM-5 AN, aged 16 years and older, with a BMI equal to or above 14.0 and below 18.5 will be eligible to participate. 56 patients will be randomly and evenly assigned to two intervention groups (CBT-E and TAU). Those assigned to CBT-E will be offered 25–40 sessions in accordance with their initial BMI. Patients assigned to TAU will have at least one session every 2 weeks, with the number of sessions and treatment period not fixed in advance. The primary outcome is BMI at 40 weeks after treatment initiation. The secondary outcomes are the results from the Japanese version of the Eating Disorder Examination Questionnaire and Clinical Impairment Assessment questionnaire to measure eating disorder psychopathology and psychological impairment. The follow-up assessment will be performed 6 months after the 40-week assessment. Discussion This multi-center randomized controlled study will probably evaluate the efficacy of CBT-E compared with TAU for patients with more severe AN than in previous studies since Japanese patients are likely to have a lower BMI than those in Western countries. While it may be difficult to generalize the results of a study conducted in Japan, it would be valuable to clarify the efficacy of CBT-E as a treatment package. Trial registration UMIN, UMIN000048847. Registered 12 Sep 2022.
- Published
- 2023
- Full Text
- View/download PDF
163. Anti-PD-1 therapy achieves favorable outcomes in HBV-positive non-liver cancer
- Author
-
Jie Zhou, Guanming Chen, Jiuling Wang, Bo Zhou, Xuemin Sun, Jinsong Wang, Shu Tang, Xiangju Xing, Xiaofei Hu, Yang Zhao, Yu Peng, Wenjiong Shi, Tingting Zhao, Yuzhang Wu, Hanbing Zhong, Ni Hong, Zhihua Ruan, Yi Zhang, and Wenfei Jin
- Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Anti-PD-1 therapy has shown promising outcomes in the treatment of different types of cancer. It is of fundamental interest to analyze the efficacy of anti-PD-1 therapy in cancer patients infected with hepatitis B virus (HBV) since the comorbidity of HBV and cancer is widely documented. We designed a multicenter retrospective study to evaluate the efficacy of anti-PD-1 therapy on non-liver cancer patients infected with HBV. We found anti-PD-1 therapy achieved much better outcomes in HBV+ non-liver cancer patients than their HBV– counterparts. We performed single-cell RNA sequencing (scRNA-seq) on peripheral blood mononuclear cells (PBMCs) from esophageal squamous cell carcinoma (ESCC) patients. We found both cytotoxicity score of T cells and MHC score of B cells significantly increased after anti-PD-1 therapy in HBV+ ESCC patients. We also identified CX3CR1high TEFF, a subset of CD8+ TEFF, associated with better clinical outcome in HBV+ ESCC patients. Lastly, we found CD8+ TEFF from HBV+ ESCC patients showing higher fraction of Exhaustionhi T than their HBV– counterpart. In summary, anti-PD-1 therapy on HBV+ non-liver cancer patients is safe and achieves better outcomes than that on HBV– non-liver cancer patients, potentially because HBV+ patients had higher fraction of Exhaustionhi T, which made them more efficiently respond to anti-PD-1 therapy.
- Published
- 2023
- Full Text
- View/download PDF
164. Questionnaire survey on pharmacists’ roles among non- and health care professionals in medium-sized cities in Japan
- Author
-
Fukuko Horio, Tokunori Ikeda, Yanosuke Kouzaki, Tomoo Hirahara, Kengo Masa, Sawana Narita, Yusuke Tomita, Shu Tsuruzoe, Akihiko Fujisawa, Yuki Akinaga, Yoko Ashizuka, Yuki Inoue, Ayaka Unten, Katsutoshi Okamura, Yuiko Takechi, Yasuhiro Takenouchi, Fuka Tanaka, Chiharu Masuda, Yusuke Sugimura, and Yuji Uchida
- Subjects
Medicine ,Science - Abstract
Abstract Although the scope of pharmacists’ work has expanded in Japan, people’s perception of this is unclear. To contribute to medical care together with non- and health care professionals, clarifying the perceptions of these groups is important to best utilize pharmacist professionals. We conducted a cross-sectional questionnaire survey among non-health care professionals (n = 487) and nurses (n = 151), medical doctors (n = 133), and pharmacists (n = 204) regarding the work of pharmacists. The questionnaire comprised 56 items in four categories associated with the roles of pharmacists. For each questionnaire item, we performed logistic regression analysis to compare pharmacists’ opinions with those of other professionals and non-health care professionals. Opinions were similar between pharmacists and nurses or medical doctors regarding “collecting patient information” and “providing drug information to patients.” However, there were differences in perceptions regarding “medical collaboration” (nurses; 8/23 items, physicians; 11/23 items) and “community medicine” (nurses; 9/15 items, physicians; 11/15 items), and pharmacists themselves perceived greater roles related to health care collaboration and community health care. Perceptions of non-health care professionals were poorer than those of pharmacists in all categories (47/56 items). These results suggest that pharmacists must actively communicate to help others understand their specialty and build trusting relationships to improve patient care.
- Published
- 2023
- Full Text
- View/download PDF
165. Trapped Photoelectrons During Spacecraft Charging in Sunlight
- Author
-
Kerri Cahoy and Shu T. Lai
- Subjects
Physics ,Nuclear and High Energy Physics ,Electron ,Photoelectric effect ,Condensed Matter Physics ,Secondary electrons ,Spacecraft charging ,symbols.namesake ,Dipole ,Van Allen radiation belt ,Physics::Space Physics ,symbols ,Rectangular potential barrier ,Van Allen Probes ,Astrophysics::Earth and Planetary Astrophysics ,Physics::Atomic Physics ,Atomic physics - Abstract
For a dielectric spacecraft charging in sunlight, the potentials are different on the sunlit and dark sides. Differential charging of spacecraft surfaces can trap low-energy electrons by means of potential wells and barriers. The low-energy electrons are mostly photoelectrons and secondary electrons. Motivated by the recent interest in trapped photoelectrons measured by the Van Allen Probes in the radiation belts, we calculate the extent of the trapped photoelectron area and the potential barrier as a function of the dipole strength and sun angle using the monopole–dipole model. We find that the dipole strength is an important parameter in controlling the behavior of the potential wells and barriers. The usual inequality, $1/2 \le A \le 1$ where $A$ is the dipole strength, used in the monopole–dipole model can be relaxed and amended for finite sun angles. We then use a simple method to estimate the density of the trapped low-energy electrons in these areas. In sunlight charging, the low-energy electron population around the spacecraft is enhanced by the photoelectrons trapped inside the potential barrier.
- Published
- 2015
- Full Text
- View/download PDF
166. Unrecognized dural tear during percutaneous endoscopic lumbar surgery confirmed with myelography
- Author
-
Shu Takeuchi, MD, Junya Hanakita, MD, PhD, Toshiyuki Takahashi, MD, PhD, Ryo Kanematsu, MD, Izumi Suda, MD, Sho Nakamura, MD, and Manabu Minami, MD, PhD
- Subjects
Dural tear ,Endoscopic surgery ,Myelography ,Lumbar disc herniation ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Iatrogenic dural tear is usually recognized during the surgery. We describe a rare case of unrecognized dural tear caused by percutaneous endoscopic lumbar surgery at another hospital clearly confirmed with dynamic myelography. Although magnetic resonance imaging of the lumbar spine showed no obvious fluid collection suggesting dural tear, dynamic myelography revealed leakage of intradural subarachnoid contrast medium along root sleeve into the intervertebral disc space. In the setting of endoscopic spine surgery, incidental dural tear might be overlooked due to the narrow and fluid-filled surgical field. Dynamic myelography is useful to evaluate the precise condition caused by unrecognized dural tear.
- Published
- 2023
- Full Text
- View/download PDF
167. Heterogeneous Effect of Uncertainty on Corporate Investment: Evidence from Listed Korean Firms
- Author
-
Cheonkoo Kim, Jungsoo Park, Donghyun Park, and Shu Tian
- Subjects
Uncertainty ,corporate investment ,financial constraints ,investment irreversibility ,Economics as a science ,HB71-74 - Abstract
In this study, we analyse the effect of financial uncertainty on corporate investment using firm-level panel data from the Republic of Korea. We find that financial uncertainty has a significant negative effect on corporate investment, and that the effect is heterogeneous across firms of different sizes. Small firms and large firms are more exposed to the negative effect of uncertainty than medium-sized firms. The negative effect of uncertainty on large firms slightly declined after the global financial crisis (GFC), but it increased for small and medium-sized enterprises (SMEs). Financial constraints and investment irreversibility amplify the negative effect of uncertainty. The inverted U-shaped curve of the uncertainty effect along the firm-size spectrum can be understood as follows: Small firms are more financially constrained and large firms’ investments are more irreversible in nature. Lastly, contrary to widespread belief, uncertainty has waned since 1990, dampening the trend of declining investment ratios. To counter the negative effect of uncertainty on SMEs, policies need to be directed toward the development of capital markets and bond markets for SMEs. Furthermore, SME policies should be redirected to target competitiveness, not protection.
- Published
- 2023
- Full Text
- View/download PDF
168. A case of blindness caused by Lemierre's syndrome
- Author
-
Tensei Suzuki, Mitsuaki Kojima, Raira Nakamoto, Keiichi Kuriyama, Shu Tanizawa, Yuzuru Mochida, Yuri Asakura, Ayaka Shibano, and Tomohisa Shoko
- Subjects
blindness ,Fusobacterium ,Lemierre syndrome ,retropharyngeal abscess ,Medicine ,Medicine (General) ,R5-920 - Abstract
Key Clinical Message We describe a patient who lost her vision because of Lemierre's syndrome. Ophthalmologic complications of Lemierre's syndrome are rare, and very few cases have been reported. Clinicians need to recognize that it is a serious condition that can lead to blindness in some cases. Abstract Lemierre's syndrome is a systemic septic embolism resulting from thrombophlebitis of the internal jugular vein. We report a case of blindness caused by Lemierre's syndrome, despite prompt diagnosis and early treatment. A 36‐year‐old woman was transported to our hospital. She presented with fever, facial swelling, and right visual acuity deterioration. Contrast‐enhanced computed tomography revealed a retropharyngeal abscess and right internal jugular vein thrombosis. Blood culture revealed Fusobacterium necrophorum, suggesting Lemierre's syndrome. The patient had septic shock and disseminated intravascular coagulation. We diagnosed her visual impairment as orbital‐apex syndrome due to spread of inflammation. After 6 weeks of antimicrobial drug treatments, her general condition had improved, and the retropharyngeal abscess had disappeared. On Day 49 of her illness, she was transferred to a rehabilitation hospital, but her visual acuity was not restored. Clinicians should be aware that Lemierre's syndrome can, although rarely, cause blindness.
- Published
- 2023
- Full Text
- View/download PDF
169. Rigorous Regional Air Quality Standards for Substantial Health Benefits
- Author
-
Wenxiao Zhang, Haoran Xu, Xinyuan Yu, Jin Li, Yuanzheng Zhang, Rong Dai, Shuxiu Zheng, Wenjun Meng, Huizhong Shen, Yilin Chen, Guofeng Shen, Jianmin Ma, Bengang Li, Junfeng Liu, Xuejun Wang, and Shu Tao
- Subjects
air quality ,ambient PM2.5 ,regional standard ,health benefits ,cost–benefit analyses ,Environmental sciences ,GE1-350 ,Ecology ,QH540-549.5 - Abstract
Abstract Following a series of actions in China, the annual mean fine particle (PM2.5) concentrations have considerably reduced since 2013. However, in some cities, the PM2.5 concentrations exceed the national ambient air quality standard of 35 μg/m3. Herein, we evaluated the historical trends of PM2.5 from 2014 to 2022 in mainland China and found continuously declining trends. However, the annual decline rates decreased despite increasing investments on pollution control, showing considerably diminishing marginal effects of these investments. Accumulative reduction in PM2.5 concentrations is linearly dependent on the log‐transformed accumulative investment in air pollution control. The standard of 35 μg/m3 can be achieved by 2035 if the current efforts continue at the same pace. However, the standard of 35 μg/m3 can weaken the momentum of future actions in cities where the standard has already been implemented. We proposed and tested two tiers with four or six levels of specific regional standards based on the regression model predictions from the historical data and demonstrated that more rigorous standards for regions where the current standard is already attained could provide more momentum for strengthening abatement efforts. The results show that both tiers are feasible if the level of abatement endeavor is maintained even with marginal effects. We also demonstrate that additional 135,000 or 384,000 deaths can be avoided by applying the regional standards. Health benefits are monetized and compared with the control costs, suggesting that compared to Tier‐2, Tier‐1 is more cost‐effective and balanced across the mainland China.
- Published
- 2023
- Full Text
- View/download PDF
170. Hypoxic tumour-derived exosomal miR-1225-5p regulates M2 macrophage polarisation via toll-like receptor 2 to promote ovarian cancer progress
- Author
-
Shu Tan, Hao Yu, Zhaocong Zhang, Yiming Liu, and Ge Lou
- Subjects
Ovarian cancer ,exosome ,hsa-miR-1225-5p ,TLR2 ,macrophages ,wnt/β-catenin pathway ,Internal medicine ,RC31-1245 - Abstract
AbstractTumor-secreted exosomes are critical for the functional regulation of tumor-associated macrophages (TAMs). This study aimed to explore how exosomes secreted by ovarian carcinoma cells regulate the phenotype and function of macrophages. Hypoxic treatment of A2780 cells was postulated to mimic the tumor microenvironment, and exosomes were co-cultured with TAMs. miR-1225-5p was enriched in hypoxic exosomes and contributed to M2 macrophage polarizationby modulating Toll-like receptor 2 expression (TLR2). Furthermore, hypoxia-treated macrophages promote ovarian cancer cell viability, migration, and invasion via the wnt/β-catenin pathway. This study clarified that exosomal miR-1225-5p promotes macrophage M2-like polarization by targeting TLR2 to promote ovarian cancer, which may via the wnt/β-catenin pathway.
- Published
- 2023
- Full Text
- View/download PDF
171. Effects of roasted burdock root tea, drink, and the residue on caecal microbiota of mice fed low-dietary fibre diet
- Author
-
Mahiro Yamamoto, Hikaru Ogura, Takashi Kuda, Yumeng Xia, Hajime Takahashi, Junji Inoue, and Shu Takayanagi
- Subjects
Burdock root tea ,Gut microbiota ,Pro-inflammatory cytokines ,Food processing and manufacture ,TP368-456 - Abstract
Burdock (Arctium lappa) root has been traditionally consumed in Japan since ancient times. Roasted burdock tea (BT) is gaining popularity worldwide as a health drink as it is rich in inulin and chlorogenic acid, and has been reported to have health benefits, including inhibitory and ameliorative effects on constipation and bowel inflammation. However, the underlying mechanism remains unclear. To determine the effects of BT on gut microbiota, diet without cellulose (no fibre: NF), 5% (w/w) whole roasted burdock root powder (WB) diet, 5% (w/v) BT as drinking liquid, or 1.7% (w/w) residue of BT (BR) diet was fed to mice. Microbiota analysis was performed using 16S rRNA (V4) gene amplicon sequencing. The abundance of microbial groups related to obesity and inflammation, such as Allobaculum, was decreased by feeding burdock root preparations, particularly BT (0.6%) compared with NF (25%). Conversely, the abundance of Muribaculaceae, which are gut commensals that correlate with anti-inflammation, immunomodulation, and longevity, in the three burdock groups was 2–3-times higher than that in the NF group. The levels of tumour necrosis factor-α, a pro-inflammatory cytokine, were 2.5-fold decreased in the BT group. In conclusion, BT may affect gut microbiota composition and, thereby, impact the host immune system.
- Published
- 2023
- Full Text
- View/download PDF
172. Investigating the potential of using tannery process solid hair waste for spent engine and vegetable oils removal from water and toxicity assessment using maize
- Author
-
Cornelius Tsamo, Adjia Henriette Zangue, Essam Ewane Herbaud, and Shu Tracy Daisy Nchang
- Subjects
Oil ,Wastewater ,Cattle hair ,Toxicity ,Maize ,Environmental engineering ,TA170-171 ,Chemical engineering ,TP155-156 - Abstract
Contamination of water and soils by oil is becoming one of the most dangerous pollution problem to handle due to oil toxicity to aquatic organisms, degradation of soil quality and effect on human health. Unfortunately, industrial development, increase population and human activities have increased different types of oil discharges into the soils and water sources. This aim of this study was to investigate the efficiency of cattle hair waste in removing spent engine and vegetable oils from wastewater using different process conditions, and the toxicity of water containing oil and when treated on maize germination evaluated. The equilibrium removal time is 10 minutes for both oils with 100% removal at 50 g/L initial oil concentration. Cattle hair is a good oil adsorbent with adsorption capacities of 52.20 g/g for vegetable oil and 28.49 g/g for spent engine oil. Temperature increase reduces oil removal from 100% at 25–30 °C to 93% at 60oc for spent engine oil and from 100% at 25 °C to 85% at 60 °C for vegetable oil. The removal of vegetable oil is reduced from 100% in the absence of NaCl to 10% at 10000 mg/L NaCl meanwhile there is a negligible effect of NaCl presence on spent engine oil removal. Untreated water containing spent engine oil reduced maize seed germination by about 70% compared to 45% for vegetable oil. These values reduced respectively to 17% for spent engine oil and 11% for vegetable oil when oil wastewater is treated. The fact that just 10 minutes was required to have a 100% removal, and with removal capacities of 52.20 g/g for vegetable oil and 28.49 g/g for spent engine oil shows cattle hair can be effectively applied in removing spent engine and vegetable oils from wastewater in a low cost process, with a positive effect on environmental and human safety.
- Published
- 2023
- Full Text
- View/download PDF
173. Does Spacecraft Potential Depend on the Ambient Electron Density?
- Author
-
Manuel Martinez-Sanchez, Michelle F. Thomsen, Kerri Cahoy, Frankie K. Wong, Yuri Shprits, Whitney Lohmeyer, Shu T. Lai, and 2.3 Earth's Magnetic Field, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum
- Subjects
Physics ,Nuclear and High Energy Physics ,Electron density ,010504 meteorology & atmospheric sciences ,Spacecraft ,business.industry ,Electron ,Plasma ,Condensed Matter Physics ,01 natural sciences ,Secondary electrons ,010305 fluids & plasmas ,Spacecraft charging ,0103 physical sciences ,Physics::Space Physics ,Department Sport- und Gesundheitswissenschaften ,Astrophysical plasma ,ddc:610 ,Electric potential ,Atomic physics ,business ,0105 earth and related environmental sciences - Abstract
© 2017 IEEE. In this paper, we address the question of whether spacecraft potential depends on the ambient electron density. In Maxwellian space plasmas, the onset of spacecraft charging does not depend on the ambient electron density. The balance of electron currents causes the incoming electrons to balance with the outgoing secondary electrons. The onset is controlled by the critical or anticritical temperature of the ambient electrons, but not the electron density. Above the critical temperature, charging to negative potential occurs. If the energy of the incoming electrons increases to well beyond the second crossing point of the secondary electron yield (SEY), the value of SEY decreases to well below unity. When the secondary electron current is negligible compared with the primary electron current, the spacecraft potential is governed solely by the balance of the incoming electrons and the sum of the currents of the repelled electrons and the attracted ions. In neutral space plasma, the electron and ion charges cancel each other. But if the space plasma deviates from being neutral, then the densities can have effect on the spacecraft potential. If the ambient plasma deviates significantly from equilibrium, a non-Maxwellian electron distribution may result. For a kappa distribution, one can show that the spacecraft charging level is independent of the ambient electron density. For a double Maxwellian distribution, the spacecraft charging level depends on the electron densities. For a conducting spacecraft charging in sunlight, the charging level is low and positive. It also depends on the ambient electron density. For a dielectric spacecraft in sunlight, the high-level negative-voltage charging on the shadowed side may extend to the sunlit side and block the photoelectrons trying to escape from the sunlit side. In this case, the charging level does not depend on ambient electron density. Using coordinated environmental and spacecraft charging data obtained from the Los Alamos National Laboratory geosynchronous satellites, we showed some results confirming that spacecraft potential is indeed often independent of the ambient electron density.
- Published
- 2017
174. Three-dimensional visualization of neural networks inside bone by Osteo-DISCO protocol and alteration of bone remodeling by surgical nerve ablation
- Author
-
Kurando Utagawa, Takaei Shin, Hironori Yamada, Hiroki Ochi, Satoko Sunamura, Aiko Unno, Chihiro Akazawa, Masatsugu Ema, Shu Takeda, Atsushi Okawa, and Shingo Sato
- Subjects
Medicine ,Science - Abstract
Abstract Bone is one of the largest organ systems in humans and is considered to regulate whole-body homeostasis in cooperation with other organs. We have previously reported that a sympathetic or sensory nervous system inside bone regulates bone homeostasis. However, the detailed regulatory mechanism, including the distribution of nerves inside bone, remains unknown. Although a two-dimensional histological analysis has been widely used to evaluate the structure of nerves or blood vessels, the actual structure is more complex, suggesting that it should be evaluated three-dimensionally. Here, we established a novel bone tissue clearing technique (Osteo-DISCO) for murine bones which enabled us to visualize the detailed distribution of nerves or blood vessels inside bone. Interestingly, we found that there is a specific nerve entry site in each long bone and that surgical ablation of the specific nerve fibers entering bone tissue led to decreased bone formation and impaired bone regeneration. Furthermore, we revealed that the administration of calcitonin gene-related peptide (CGRP), which is primarily released from sensory nerves, suppressed the bone loss caused by surgical nerve ablation. An in vitro study also indicated that CGRP directly promotes osteoblast activity, suggesting that sensory nerves inside bone can regulate osteogenesis via the secretion of CGRP.
- Published
- 2023
- Full Text
- View/download PDF
175. AgMYB5, an MYB transcription factor from celery, enhanced β-carotene synthesis and promoted drought tolerance in transgenic Arabidopsis
- Author
-
Miao Sun, Qin-Yi Xu, Zhi-Peng Zhu, Pei-Zhuo Liu, Jian-Xiang Yu, Yao-Xian Guo, Shu Tang, Zhi-Fang Yu, and Ai-Sheng Xiong
- Subjects
AgMYB5 ,β-carotene ,Drought tolerance ,Abscisic acid ,Y2H ,Celery ,Botany ,QK1-989 - Abstract
Abstract Background Water shortage caused by global warming seriously affects the yield and quality of vegetable crops. β-carotene, the lipid-soluble natural product with important pharmacological value, is abundant in celery. Transcription factor MYB family extensively disperses in plants and plays regulatory roles in carotenoid metabolism and water scarcity response. Results Here, the AgMYB5 gene encoding 196 amino acids was amplified from celery cv. ‘Jinnanshiqin’. In celery, the expression of AgMYB5 exhibited transactivation activity, tissue specificity, and drought-condition responsiveness. Further analysis proved that ectopic expression of AgMYB5 increased β-carotene content and promoted drought tolerance in transgenic Arabidopsis thaliana. Moreover, AgMYB5 expression promoted β-carotene biosynthesis by triggering the expression of AtCRTISO and AtLCYB, which in turn increased antioxidant enzyme activities, and led to the decreased contents of H2O2 and MDA, and the inhibition of O2 − generation. Meanwhile, β-carotene accumulation promoted endogenous ABA biosynthesis of transgenic Arabidopsis, which resulted in ABA-induced stomatal closing and delayed water loss. In addition, ectopic expression of AgMYB5 increased expression levels of AtERD1, AtP5CS1, AtRD22, and AtRD29. Conclusions The findings indicated that AgMYB5 up-regulated β-carotene biosynthesis and drought tolerance of Arabidopsis.
- Published
- 2023
- Full Text
- View/download PDF
176. Bacillus pumilus TS1 alleviates Salmonella Enteritidis-induced intestinal injury in broilers
- Author
-
Yinkun Liu, Zixin Li, Hao Li, Shuangshuang Wan, and Shu Tang
- Subjects
Bacillus pumilus ,HIF-1α ,Histopathology ,HSP70 ,Inflammatory cytokines ,Oxidative stress ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Background In the current context of reduced and limited antibiotic use, several pathogens and stressors cause intestinal oxidative stress in poultry, which leads to a reduced feed intake, slow or stagnant growth and development, and even death, resulting in huge economic losses to the poultry breeding industry. Oxidative stress in animals is a non-specific injury for which no targeted drug therapy is available; however, the health of poultry can be improved by adding appropriate feed additives. Bacillus pumilus, as a feed additive, promotes growth and development and reduces intestinal oxidative stress damage in poultry. Heat shock protein 70 (HSP70) senses oxidative damage and repairs unfolded and misfolded proteins; its protective effect has been widely investigated. Mitogen-activated protein kinase/protein kinase C (MAPK/PKC) and hypoxia inducible factor-1 alpha (HIF-1α) are also common proteins associated with inflammatory response induced by several stressors, but there is limited research on these proteins in the context of poultry intestinal Salmonella Enteritidis (SE) infections. In the present study, we isolated a novel strain of Bacillus pumilus with excellent performance from the feces of healthy yaks, named TS1. To investigate the effect of TS1 on SE-induced enteritis in broilers, 120 6-day-old white-feathered broilers were randomly divided into four groups (con, TS1, SE, TS1 + SE). TS1 and TS1 + SE group chickens were fed with 1.4 × 107 colony-forming units per mL of TS1 for 15 days and intraperitoneally injected with SE to establish the oxidative stress model. Then, we investigated whether TS1 protects the intestine of SE-treated broiler chickens using inflammatory cytokine gene expression analysis, stress protein quantification, antioxidant quantification, and histopathological analysis. Results The TS1 + SE group showed lower MDA and higher GSH-Px, SOD, and T-AOC than the SE group. TS1 alleviated the effects of SE on intestinal villus length and crypt depth. Our results suggest that SE exposure increased the expression of inflammatory factors (IL-1β, IL-6, TNF-α, IL-4, and MCP-1), p38 MAPK, and PKCβ and decreased the expression of HSP60, HSP70, and HIF-1α, whereas TS1 alleviated these effects. Conclusions Bacillus pumilus TS1 alleviated oxidative stress damage caused by SE and attenuated the inflammatory response in broilers through MAPK/PKC regulation of HSPs/HIF-1α.
- Published
- 2023
- Full Text
- View/download PDF
177. Dynamical Process of a Bit-Width Reduced Ising Model With Simulated Annealing
- Author
-
Shuta Kikuchi, Nozomu Togawa, and Shu Tanaka
- Subjects
Bit-width reduction ,Ising machine ,Ising model ,simulated annealing ,statistical mechanics ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Ising machines have attracted attention as efficient solvers for combinatorial optimization problems, which are formulated as ground-state (lowest-energy) search problems of the Ising model. Due to the limited bit-width of coefficients on Ising machines, the Ising model must be transformed into a bit-width reduced (BWR) Ising model. According to previous research, the bit-width reduction method, which adds auxiliary spins, ensures that the ground state of the BWR Ising model is theoretically the same as the Ising model before bit-width reduction (original Ising model). However, while the dynamical process is closely related to solution accuracy, how the BWR Ising model progresses towards the ground state remains to be elucidated. Therefore, we compared the dynamical processes of these models using simulated annealing (SA). Our findings reveal significant differences in the dynamical process across models. Analysis from the viewpoint of statistical mechanics found that the BWR Ising model has two characteristic properties: an effective temperature and a slow relaxation. These properties alter the temperature schedule and spin flip probability in the BWR Ising model, leading to differences in the dynamical process. Therefore, to obtain the same dynamical process as the original Ising model, we proposed SA parameters for the BWR Ising model. We demonstrated the proposed SA parameters using a square lattice Ising model, in which all coefficients were set uniformly to the same positive values or randomly. Our experimental evaluations demonstrated that the dynamical process of the BWR and original Ising model became closer.
- Published
- 2023
- Full Text
- View/download PDF
178. Force-induced ion generation in zwitterionic hydrogels for a sensitive silent-speech sensor
- Author
-
Sijia Xu, Jie-Xiang Yu, Hongshuang Guo, Shu Tian, You Long, Jing Yang, and Lei Zhang
- Subjects
Science - Abstract
The development of sensitive hydrogel sensor without additional mobile ionic species is challenging. Here, the authors demonstrate force-induced ion generation in a skin sensor based on zwitterionic hydrogel, and build a throat-worn silent-speech recognition system with high recognition accuracy.
- Published
- 2023
- Full Text
- View/download PDF
179. Ritonavir-Mediated Induction of Apoptosis in Pancreatic Cancer Occurs via the RB/E2F-1 and AKT Pathways
- Author
-
Shu T. Kung, Sreedhar Chamala, Ramesh B. Batchu, Scott A. Gruber, Christopher S. Bryant, Udaya S. Puttagunta, Oksana V. Gruzdyn, Ramana S. Sanka, Aamer Qazi, Sanjeev Kumar, and Donald W. Weaver
- Subjects
endocrine system diseases ,lcsh:Medicine ,lcsh:RS1-441 ,Pharmaceutical Science ,Pharmacology ,Article ,retinoblastoma ,lcsh:Pharmacy and materia medica ,Drug Discovery ,pancreatic adenocarcinoma ,medicine ,HIV Protease Inhibitor ,E2F ,Protein kinase B ,PI3K/AKT/mTOR pathway ,biology ,business.industry ,Cell growth ,AKT ,lcsh:R ,Retinoblastoma protein ,2F-1 ,virus diseases ,Combination chemotherapy ,digestive system diseases ,ritonavir ,biology.protein ,Molecular Medicine ,Ritonavir ,business ,medicine.drug - Abstract
Recent observations suggest a lower incidence of malignancies in patients infected with HIV during treatment with Highly Active Anti-Retroviral Therapy (HAART) utilizing protease inhibitors. We investigated the effects of ritonavir, a FDA approved HIV protease inhibitor, on proliferation of pancreatic ductal adeno-carcinoma (PDAC) cell lines. Human PDAC cell lines BxPC-3, MIA PaCa-2, and PANC-1 were propagated under standard conditions and treated with serial dilutions of ritonavir. Ritonavir inhibited cell growth in a dose-dependent manner as well as activated the intrinsic apoptotic pathway in human pancreatic ductal adenocarcinoma (PDAC) cell lines. We observed down-modulation of cell-cycle promoting and up-regulation of cell-cycle inhibitory genes; enhanced interaction of retinoblastoma protein (RB) with E2F-1 transcription factor; inhibition of phosphorylation of RB, resulting in sequestration of E2F-1 and subsequent down-regulation of S phase genes; decreased interaction of E2F-1 with its consensus binding sites; inhibition of cell motility and invasiveness; and inhibition of the AKT pathway. Our results demonstrate a potential use of ritonavir as part of combination chemotherapy for PDAC. Since ritonavir is FDA approved for HIV, drug repositioning for PDAC would limit the costs and reduce risks.
- Published
- 2014
- Full Text
- View/download PDF
180. Hemorrhagic disorder due to an Isoniazid-associated acquired factor XIII inhibitor in a patient with Waldenstrom's macroglobulinemia
- Author
-
Krumdieck, Richard, Shaw, Denise R., Huang, Shu T., Poon, Man-Chiu, and Rustagi, Pradip K.
- Subjects
Macroglobulinemia -- Case studies ,Macroglobulinemia -- Complications ,Hemorrhage -- Causes of ,Isoniazid -- Adverse and side effects ,Health ,Health care industry - Abstract
A case is described of a 75-year-old woman with a history of pulmonary tuberculosis and Waldenstrom's macroglobulinemia who developed an inhibitor of coagulation factor XIII while taking isoniazid. The patient presented with a subcutaneous hematoma of the abdominal wall that extended from the xiphoid process to the symphysis pubis and measured 20 cm in diameter. Results of routine coagulation studies were normal with the exception of an increased solubility of the patient's plasma clot in 5M urea consistent with a deficiency of factor XIII activity. Persistence of the deficiency following a 1:2 dilution of the patient's plasma in normal plasma indicated the presence of an inhibitor. A sample of the patient's plasma was depleted of IgG by streptococcal protein G adsorption. The IgG-depleted plasma did not inhibit factor XIII activity, indicating that the inhibitory activity was not attributable to the underlying IgM paraprotein. The patient's purified IgG, on the other hand, inhibited factor XIII activity and the inhibitory activity could be neutralized by anti-IgG antibody. The patient's IgG also inhibited factor XIII-mediated incorporation of fluorescent monodansylcadaverine into casein. Binding of the patient's IgG to factor XIII concentrate was demonstrated by enzyme-linked immunosorbent assay and the IgG that bound to the factor XIII was demonstrated to be polyclonal. Isoniazid was discontinued after the patient was admitted to the hospital. Cryoprecipitate infusion controlled bleeding and reduced the inhibitor titer by 50%. Treatment with cyclophosphamide and prednisone, followed by extracoporeal immunoadsorption over a staphylococcal protein A column, did not reduce the inhibitor titer further. Plasma exchange therapy reduced the inhibitor titer to undetectable levels but failed to restore factor XIII activity. Infusions of factor XIII concentrate reproducibly restored factor XIII activity and were not associated with an anamnestic rise in the inhibitor titer. This represents the seventh reported case of an acquired inhibitor to factor XIII associated with the ingestion of isoniazid., Waldenstrom's macroglobulinemia is characterized by an excessive number of plasma cells, which produce immunoglobulin M (IgM), a protein formed in most immune responses. This disease is characterized by anemia (a decrease in red blood cells); disease of the lymph nodes; chronic lymphocytic leukemia (proliferation of lymphocytes, a type of immune cell); and increased thickness of the blood. Patients show lassitude, confusion, and have a tendency to bleed. The bleeding may be related to protein abnormalities and defects in factors and processes involved in blood clotting. A case is described of a 75-year-old woman with Waldenstrom's macroglobulinemia, who developed a bleeding disorder due to the presence of an acquired inhibitor of factor XIII, the fibrin stabilizing factor that helps in blood coagulation. The production of the inhibitor resulted after ingestion of the drug isoniazid, used to treat pulmonary tuberculosis. The patient developed a large abdominal hematoma, or mass of blood in the tissue underlying the skin of the abdomen. Coagulation studies revealed a deficiency in factor XIII activity, and further tests indicated the presence of a factor XIII inhibitor. The development of this inhibitor was related to the production of immunoglobulin G (IgG) antibody after the ingestion of isoniazid. The isoniazid was discontinued and treatment to control bleeding and reduce the levels of inhibitor was started. Factor XIII concentrate was administered to restore factor XIII activity. (Consumer Summary produced by Reliance Medical Information, Inc.)
- Published
- 1991
181. Establishing a three-generation prospective study: Bogalusa daughters.
- Author
-
Harville, EW, Breckner, D, Shu, T, Cooper, M, and Bazzano, LA
- Abstract
Objective: The Developmental Origins of Disease hypothesis has spurred increased interest in how prenatal exposures affect lifelong health, while mechanisms such as epigenetics may explain the multigenerational influences on health. Such factors are not well captured within conventional epidemiologic study designs. We explored the feasibility of collecting information on the offspring and grand-offspring of participants in a long-running study. Design: The Bogalusa Heart Study is a study, begun in 1973, of life-course cardiovascular health in a semirural population (65% white and 35% black). Main measures: Female participants who had previously provided information on their pregnancies were contacted to obtain contact information for their daughters aged 12 and older. Daughters were then contacted to obtain reproductive histories, and invited for a clinic or lab visit to measure cardiovascular risk factors. Results: Two hundred seventy-four daughters of 208 mothers were recruited; 81% (223) had a full clinic visit and 19% (51) a phone interview only. Forty-five percent of the daughters were black, and 55% white. Mean and median age at interview was 27, with 15% under the age of 18. The strongest predictors of participation were black race, recent maternal participation in the parent study, and living in or near Bogalusa. Simple correlations for cardiovascular risk factors across generations were between r = 0.19 (systolic blood pressure) and r = 0.39 (BMI, LDL). Conclusion: It is feasible to contact the children of study participants even when participants are adults, and initial information on the grandchildren can also be determined in this manner. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
182. Magnetic resonance spectroscopy may serve as a presurgical predictor of somatostatin analog therapy response in patients with growth hormone-secreting pituitary macroadenomas
- Author
-
Hu, J., primary, Yan, J., additional, Zheng, X., additional, Zhang, Y., additional, Ran, Q., additional, Tang, X., additional, Shu, T., additional, Shen, R., additional, Duan, L., additional, Zhang, D., additional, Guo, Q., additional, Zhang, W., additional, Yang, H., additional, and Li, S., additional
- Published
- 2018
- Full Text
- View/download PDF
183. Dependence of electron flux on electron temperature in spacecraft charging.
- Author
-
Lai, Shu T.
- Subjects
- *
ELECTRON temperature , *SPACE vehicles , *MATHEMATICAL models , *GEOSTATIONARY satellites , *PLASMA gases , *COULOMB potential - Abstract
Two important observations when the onset of spacecraft surface charging occurs are (1) the electron flux measured in the high-energy (above several keV) channels onboard rises and (2) the ambient electron temperature rises above a critical value. We show by means of an analytical model that the two behaviors are consistent with each other. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
184. Charging of fast spinning spheroidal satellites in sunlight.
- Author
-
Tautz, Maurice and Lai, Shu T.
- Subjects
- *
SUNSHINE , *SPACE vehicles , *ASTRONAUTICS , *ARTIFICIAL satellites , *ELECTRIC meters - Abstract
We present models for a fast spinning, dielectric coated, spheroidal (prolate or oblate) spacecraft charging in sunlight. This work is a generalization of previous treatments of sunlight charging of spherical satellites. The main difference is that the spacecraft geometry can be characterized by a shape parameter that sets the aspect ratio of the spheroids. The models are based on an expansion of the Laplacian potentials external to the spacecraft surface in terms of products of standard Legendre polynomials, describing the polar angle dependence, and modified Legendre functions of the second kind, representing the “radial” behavior. The potential distributions are discussed relative to the corresponding monopole-dipole and monopole-quadrupole configurations in spherical geometry. A Taylor expansion is developed for the potentials when the shape parameter is large (the spherical limit) and expressions are also given in the opposite limit, when the shape parameter goes to zero. As in the spherical case, the potentials produce photosheath barriers which act to block escaping photoelectrons and lead to current balance, allowing sunlight charging to high negative levels. The sheath barrier location and height are calculated numerically, for a wide range of shape parameters. Contour plots are given to depict the potential distributions for sunlight charging of prolate and oblate spheroids at a representative aspect ratio. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF
185. Effects of neighborhood features on healthy aging in place: the composition and context of urban parks and traditional local coffeeshops in Singapore
- Author
-
Huso Yi, Shu Tian Ng, Cheng Mun Chang, Cheryl Xue Er Low, and Chuen Seng Tan
- Subjects
Built environment ,Neighborhood effects ,Older adults ,Healthy aging in place ,Exercise ,Smoking ,Geriatrics ,RC952-954.6 - Abstract
Abstract Background Healthy aging in place is affected by what the neighborhood provides for older adults. The mixed-methods ethnographic study explored the built environmental and contextual effects of urban parks and traditional local coffeeshops (kopitiam) on health practices among older adults in Singapore. Methods A door-to-door survey with 497 older adults from 32 residential blocks in a public housing town assessed exercise and smoking. The walking distances from the residential blocks to the facilities were calculated. Regression analysis examined the associations between the distance and rates of exercise and smoking. Ethnographic assessment data contextualized the quantitative findings. Results Older adults’ exercise was associated with proximity to an urban park but not traditional local coffeeshops. High rates of smoking were clustered in the housing blocks close to the coffeeshops, which provided casual drinking places with smoking tables. The proximity to the coffeeshops was significantly associated with increased smoking and decreased exercise. A walking distance of 200 m to the park and coffeeshops was found to discriminate the outcomes. Conclusions The findings suggested that walking distances of a few blocks influenced health behaviors among older adults. Their smoking habits appeared to be maintained through environmental features and cultural norms attached to the coffeeshops. Policy of urban planning and redevelopment for the aging population needs to consider the socioecology of healthy aging in place.
- Published
- 2022
- Full Text
- View/download PDF
186. Quantitative analysis of choroidal vasculature in central serous chorioretinopathy using ultra-widefield swept-source optical coherence tomography angiography
- Author
-
Qiaozhu Zeng, Yuou Yao, Shu Tu, and Mingwei Zhao
- Subjects
Medicine ,Science - Abstract
Abstract We aimed to quantitatively compare the choroid blood flow and choroid thickness at the periphery among eyes with central serous chorioretinopathy (CSC), fellow eyes and healthy eyes using ultra-widefield swept-source optical coherence tomography angiography (UWF SS-OCTA). Retrospective analysis of 49 patients with CSC (98 eyes, including unaffected fellow eyes) and 49 age and sex matched controls were included. We obtained 3-dimensional data of vertical 20 mm × horizontal 24 mm × scan depth 6 mm, comprising 9 subfields (superotemporal, upper, superonasal, temporal, central, nasal, inferotemporal, lower, inferonasal regions). CSC eyes presented with greater density of large-vessel choroidal layer in all the 9 subfields compared with controls. Compared with normal eyes, CSC eyes had greater choroidal thickness (superotemporal, upper, superonasal, temporal, central, nasal, inferotemporal, and inferonasal subfields) and choroidal volume (superotemporal, upper, superonasal, temporal, central, and nasal subfields). Compared with control eyes, the choriocapillaris density in the superotemporal, inferotemporal and inferonasal subfields was greater in patients with CSC. Our study may provide further evidence for the congestion of vortex vein in the pathogenesis of CSC. UWF SS-OCTA can be used to evaluate the abnormalities of the choroidal structures even at the periphery in eyes with CSC.
- Published
- 2022
- Full Text
- View/download PDF
187. Health and environmental consequences of crop residue burning correlated with increasing crop yields midst India’s Green Revolution
- Author
-
Tao Huang, Jianmin Ma, Shijie Song, Zaili Ling, Robie W. Macdonald, Hong Gao, Shu Tao, Huizhong Shen, Yuan Zhao, Xinrui Liu, Chongguo Tian, Yifan Li, Hongliang Jia, Lulu Lian, and Xiaoxuan Mao
- Subjects
Environmental sciences ,GE1-350 ,Meteorology. Climatology ,QC851-999 - Abstract
Abstract The Green Revolution (GR) enhances crop yields significantly that contributes greatly to the social and economic development of many less developed countries. However, the increasing crop yields might rise crop residue biomass burning, leading to adverse environmental and health consequences. We assess the impact of crop residue burning associated with the GR-induced growing crop yields on benzo[a]pyrene (BaP) pollution, a congener of polycyclic aromatic hydrocarbons with strong carcinogenicity. We find a significant increasing trend of BaP emission and contamination from crop residue biomass burning from the mid-1960s to 2010s in India, coinciding with the growing crop yields occurring during the GR. Our results reveal that agricultural BaP emission driven lifetime lung cancer risk (ILCR) in India increased 2.6 times from the onset of GR in the mid-1960s to 2014 and the 57% population in India was exposed to the BaP level higher than the India national standard (1 ng m−3). We show that the reduction of open crop residue burning during the rice and wheat residue burning period would be a very effective measure to reduce BaP environmental contamination and health risk.
- Published
- 2022
- Full Text
- View/download PDF
188. The Role of Surface Condition in the Yields of Secondary Electrons, Backscattered Electrons, and Photoelectrons From Spacecraft
- Author
-
Shu T. Lai
- Subjects
Physics ,Nuclear and High Energy Physics ,Spacecraft ,business.industry ,Ampere balance ,Electron ,Photoelectric effect ,Condensed Matter Physics ,Secondary electrons ,Ion ,Spacecraft charging ,Atomic physics ,business ,Voltage - Abstract
This paper reviews some active research topics of outgoing electron currents in spacecraft charging. The spacecraft potential is determined by the current balance. On a spacecraft, the incoming currents of ambient electrons and ambient ions can be measured, whereas the outgoing currents of secondary electrons (SEs), backscattered electrons (BEs), and photoelectrons (PEs) cannot. The outgoing currents depend on the incoming currents, surface materials, and surface conditions. For SE yields, using the encyclopedia parameters of the materials is not sufficient; surface conditions also need to be taken into account. For BEs, the yield approaches unity as the primary electron energy approaches zero. For PEs, reflectance is important. We conjecture that highly reflective surfaces generate little or no PEs and would charge to negative voltages as if in eclipse. As a consequence, differential charging may develop between adjacent surfaces as they get exposed to sunlight.
- Published
- 2013
- Full Text
- View/download PDF
189. Not getting laid: consumer acceptance of precision fermentation made egg
- Author
-
Oscar Zollman Thomas, Mark Chong, Angela Leung, Tricia Marjorie Fernandez, and Shu Tian Ng
- Subjects
precision fermentation ,cellular agriculture ,fermentation ,consumer acceptance ,food system ,Nutrition. Foods and food supply ,TX341-641 ,Food processing and manufacture ,TP368-456 - Abstract
Mounting concern over the negative externalities of industrialized animal agriculture, coupled with falling cost curves of novel food technologies have birthed the field of cellular agriculture: a new category of food technology seeking to reproduce the sensory experiences of animal protein, and promising a cleaner, more ethical way of enjoying animal proteins. This research examines consumer acceptance of precision fermentation (PF) made egg products in Germany, Singapore, and the USA. Using an online survey of 3,006 participants, the study examines demographic and dietary traits that predict willingness to try such products and identifies the reasons why consumers are most attracted to them. The findings suggest that PF made egg products are likely to find a willing market, with a substantial proportion (51–61%) of participants willing to try the product, with vegetarians and vegans displaying the highest enthusiasm. Egg consumption habits and, to a lesser extent, income also predict acceptance. Major reasons for adopting the product were animal welfare in Germany, and health aspects in Singapore and the USA, as well as curiosity in all three countries. Observed differences between the acceptance of PF egg and PF dairy are discussed, as well as comparisons to existing alternative protein (AP) product adoption.
- Published
- 2023
- Full Text
- View/download PDF
190. P1119: CAMRELIZUMAB PLUS LOW-DOSE APATINIB AND PEGASPARGASE FOLLOWED BY RADIOTHERAPY FOR NEWLY DIAGNOSED STAGE I/II NATURAL KILLER/T-CELL LYMPHOMA: A PROSPECTIVE MULTICENTER SINGLE-ARM STUDY
- Author
-
LI Zhi-Ming, Chuanxu Liu, Peng Sun, Shu Tian, Hao Ding, and Rong Tao
- Subjects
Diseases of the blood and blood-forming organs ,RC633-647.5 - Published
- 2023
- Full Text
- View/download PDF
191. Interaction of genetic liability for attention deficit hyperactivity disorder (ADHD) and perinatal inflammation contributes to ADHD symptoms in children
- Author
-
Nagahide Takahashi, Tomoko Nishimura, Taeko Harada, Akemi Okumura, Toshiki Iwabuchi, Md Shafiur Rahman, Hitoshi Kuwabara, Shu Takagai, Noriyoshi Usui, Manabu Makinodan, Hideo Matsuzaki, Norio Ozaki, Hiroaki Itoh, Yoko Nomura, Jeffrey H. Newcorn, and Kenji J. Tsuchiya
- Subjects
Attention deficit hyperactivity disorder ,Inflammation ,Cytokine ,Cord blood ,Polygenic risk score ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Objective: Genetic and environmental factors contribute to the development of Attention Deficit/Hyperactivity Disorder (ADHD). Perinatal inflammation is one of the promising environmental risk factors for ADHD, but the relationship between the genetic risk for ADHD and perinatal inflammation requires further examination. Methods: A possible gene-environmental interaction between perinatal inflammation and ADHD polygenic risk score (ADHD-PRS) on ADHD symptoms was investigated in children aged 8–9 from the Hamamatsu Birth Cohort for Mothers and Children (N = 531). Perinatal inflammation was evaluated by the level of concentration of three cytokines assayed in umbilical cord blood. The genetic risk for ADHD was assessed by calculating ADHD-PRS for each individual using a previously collected genome-wide association study of ADHD. Results: Perinatal inflammation (β [SE], 0.263 [0.017]; P
- Published
- 2023
- Full Text
- View/download PDF
192. Pollution Characteristics and Health Risks of Polycyclic Aromatic Compounds (PACs) in Soils of a Coking Plant
- Author
-
Yousong Zhou, Yuancheng Li, Donglei Fu, Yongqiang Zhang, Kai Xiao, Ke Jiang, Jinmu Luo, Guofeng Shen, Wenxin Liu, and Shu Tao
- Subjects
coking plant ,soil parent-PAHs ,PAH derivatives ,potential sources ,health risk ,Chemical technology ,TP1-1185 - Abstract
Coke production is an important source of environmental polycyclic aromatic compounds (PACs), including parent polycyclic aromatic hydrocarbons (PAHs) and their derivatives. The focus near coking plants has primarily been on parent-PAH contamination, with less attention given to highly toxic derivatives. In this study, soil samples were collected from both within and outside of a coking plant. The concentrations of parent-PAHs and their derivatives, including methylated-PAHs, oxygenated-PAHs, and nitrated-PAHs, were examined. Spatial interpolation was employed to determine their spatial distribution patterns. Methods for identifying potential sources and conducting incremental lifetime cancer risk analysis were used. This could achieve a comprehensive understanding of the status of PAC pollution and the associated health risks caused by coke production. The concentrations of total PACs inside the plant ranged from 7.4 to 115.8 mg/kg, higher than those outside (in the range of 0.2 to 65.7 mg/kg). The spatial distribution of parent-PAH concentration and their derivatives consistently decreased with increasing distance from the plant. A significant positive correlation (p < 0.05) among parent-PAHs and their derivatives was observed, indicating relatively consistent sources. Based on diagnostic ratios, the potential emission sources of soil PACs could be attributed to coal combustion and vehicle emissions, while principal component analysis–multiple linear regression further indicated that primary emissions and secondary formation jointly influenced the PAC content, accounting for 60.4% and 39.6%, respectively. The exposure risk of soil PACs was dominated by 16 priority control PAHs; the non-priority PAHs’ contribution to the exposure risk was only 6.4%.
- Published
- 2024
- Full Text
- View/download PDF
193. CenterInst: Center-Based Real-Time Instance Segmentation
- Author
-
Shu Tian and Liang Ren
- Subjects
instance segmentation ,real time ,center-based ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Instance segmentation is a computer vision task that aims to give each pixel in an image an instance-specific label. Recently, researchers have shown growing interest in real-time instance segmentation. In this paper, we propose a novel center-based real-time instance segmentation method (CenterInst), which follows the FastInst meta-architecture. Key design aspects include a center-guided query selector, a center-guided sampling-based query decoder, and a lightweight dual-path decoder. The center-guided query selector selects queries via the per-pixel prediction of center point probabilities, avoiding excessive query proposals for single instances. The center-guided sampling-based query decoder adaptively generates local sampling points based on center positions, employing adaptive mixing to update queries without irrelevant sampling disturbances. The lightweight dual-path decoder enhances inference speed and maintains accuracy via pixel decoding on every layer during training but only utilizing the final layer’s decoder during inference. The experimental results show CenterInst achieves superior accuracy and speed compared to state-of-the-art real-time instance segmentation methods.
- Published
- 2024
- Full Text
- View/download PDF
194. Prevalence of specific neutralizing antibodies against Sendai virus in populations from different geographic areas: implications for AIDS vaccine development using Sendai virus vectors
- Author
-
Hara, H, Hironaka, T, Inoue, M, Iida, A, Shu, T, Hasegawa, M, Nagai, Y, Falsey, A, Kamali, A, Anzala, O, Sanders, E, Karita, E, Mwananyanda, L, Vasan, S, Lombardo, A, Parks, C, Sayeed, E, Krebs, M, Cormier, E, Ackland, J, Price, M, and Excler, J
- Subjects
Adult ,Male ,Immunogen ,Adolescent ,viruses ,Genetic Vectors ,Immunology ,Human immunodeficiency virus (HIV) ,Disease ,Cross Reactions ,Antibodies, Viral ,medicine.disease_cause ,Sendai virus ,Japan ,Acquired immunodeficiency syndrome (AIDS) ,medicine ,Humans ,Vector (molecular biology) ,General Pharmacology, Toxicology and Pharmaceutics ,AIDS Vaccines ,biology ,virus diseases ,Middle Aged ,respiratory system ,biology.organism_classification ,medicine.disease ,Antibodies, Neutralizing ,Virology ,United States ,Parainfluenza Virus 1, Human ,Europe ,Africa ,biology.protein ,Female ,Antibody - Abstract
A Sendai virus (SeV) vector is being developed for delivery of an HIV immunogen. SeV is not known to cause disease in humans. Because it is genetically and antigenically related to human parainfluenza virus type 1 (hPIV-1), it is important to determine whether pre-existing hPIV-1 antibodies will affect immune responses elicited by a SeV vector-based vaccine. To quantify SeV neutralizing antibodies (NAb) in human serum, a sensitive virus neutralization assay was developed using a SeV vector encoding green fluorescent protein. Samples from 255 HIV-uninfected subjects from Africa, Europe, United States, and Japan, as well as from 12 confirmed hPIV-1-infected patients, were analyzed. SeV NAb titers did not vary significantly after serum was treated with receptor-destroying enzyme, indicating that non-specific hemagglutination inhibitors did not affect the assay sensitivity. A significant correlation was observed between hPIV-1 ELISA and SeV NAb titers. SeV NAb were detected in 92.5% subjects with a median titer of 60.6 and values ranging from 5.9- 11,324. The majority had titers < 1000 with 71.7% < 100 (< 5 considered negative). There was no significant difference in titer or prevalence by gender, age range or geographic origin. However, African males had a lower titer than non-Africans of either gender (p=0.007). Overall, the prevalence of SeV NAb is high and likely due to neutralization by cross-reactive hPIV-1 antibodies. Clinical trials will be needed to assess the influence of pre-existing SeV NAb on HIV-specific immune responses elicited by a SeV vaccine vector expressing HIV.
- Published
- 2016
195. Role of Prognostic Nutritional Index in patients with gastric cancer: a meta-analysis
- Author
-
Sui H, Wang, Shu T, Zhai, and Hui, Lin
- Subjects
Survival Rate ,Nutrition Assessment ,Stomach Neoplasms ,Humans ,Prognosis - Abstract
The aim of this study was to determine the role of Prognostic Nutritional Index in predicting gastric cancer.Studies were searched in PubMed, EMBASE and ISI Web of Science. The hazard ratios and 95% confidence interval for survival estimate were extracted from the articles and the pooled HR was computed.Nine studies with 3203 participants met the inclusion criteria. Low PNI was associated with poor overall survival (pooled HR 1.92, 95% CI: 1.68-2.19).Prognostic Nutritional Index was an effective indicator for the prognosis of gastric cancer.
- Published
- 2016
196. Childhood obesity patterns and relation to middle-age sleep apnoea risk: the Bogalusa Heart Study
- Author
-
Bazzano, L. A., Hu, T., Bertisch, S. M., Yao, L., Harville, E. W., Gustat, J., Chen, W., Webber, L. S., Shu, T., and Redline, S.
- Subjects
Adult ,Male ,Pediatric Obesity ,Sleep Apnea, Obstructive ,Adolescent ,Body Weight ,Middle Aged ,Overweight ,Article ,Risk Factors ,Child, Preschool ,Humans ,Female ,Prospective Studies ,Child ,Follow-Up Studies - Abstract
Obese adults have a higher risk of obstructive sleep apnoea (OSA); however, the relationship between childhood obesity and adult OSA risk is unclear. Objectives This study aimed to examine overweight/obesity (OW) in childhood and risk of OSA in middle age.Childhood OW status was classified as never OW, weight cycling, persistent OW and incident OW. After 35 years of follow-up, high risk for OSA was determined by a positive score in ≥2 domains on the Berlin Questionnaire with obesity removed from scoring.At initial assessment, mean (SD) age was 9.9 (2.9) years, and 23.9% were OW. Overall, 25.7% had scores indicating a high risk for OSA. Compared with participants who were never OW, those with persistent OW and incident OW were 1.36 (95%CI: 1.04-1.77) and 1.47 (1.11-1.96) times more likely to be high risk for OSA, after adjustment for multiple risk factors and adult OW status. Participants with an OW duration of 1-4 years, 5-8 years, and 8+ years were 0.96 (0.44-2.09), 1.20 (0.70-2.04) and 1.52 (1.22-1.90) times more likely to be high risk for OSA compared with those who were never OW (P for trend: 0.0002).These results suggest that childhood OW is associated with a high risk of OSA in middle age.
- Published
- 2016
197. Dependence of electron flux on electron temperature in spacecraft charging
- Author
-
Shu T. Lai
- Subjects
Electron beams -- Analysis ,Flux (Metallurgy) -- Analysis ,Physics - Abstract
Two important observations when the onset of spacecraft surface charging has occurred are the electron flux measured in the high-energy channels and the ambient temperature rises above a critical value. An analytical model is used for showing that the two behaviors are consistent with each other.
- Published
- 2009
198. Some Novel Ideas of Spacecraft Charging Mitigation
- Author
-
Shu T. Lai
- Subjects
Physics ,Nuclear and High Energy Physics ,Spacecraft ,business.industry ,Geosynchronous orbit ,chemistry.chemical_element ,Ampere balance ,Electron ,Condensed Matter Physics ,law.invention ,Spacecraft charging ,Optics ,Xenon ,chemistry ,law ,Physics::Space Physics ,business ,Light-emitting diode ,Voltage - Abstract
The level of spacecraft surface charging is determined by current balance. At geosynchronous altitude, photoelectron currents from spacecraft surfaces exceed the ambient electron currents. Lacking photoemission, however, the dark side of a spacecraft can charge to high negative voltages, which, in turn, affect the sunlit side. This paper explores the feasibility of using the following: 1) mirrors and 2) artificial photon sources, such as xenon excimer lamps or vacuum ultraviolet LEDs, to generate sufficient photoemission from the dark side to prevent high-level negative voltage charging.
- Published
- 2012
- Full Text
- View/download PDF
199. Photosynthesis and chlorophyll fluorescence response to low sink demand of tubers and roots in Dahlia pinnata source leaves
- Author
-
Shu T Yan, Pei G Fan, Xi Li, Shaohua Li, W. D. Li, and Wei Duan
- Subjects
Stomatal conductance ,Photosystem II ,ved/biology ,ved/biology.organism_classification_rank.species ,Plant Science ,Horticulture ,Photosynthesis ,Dahlia pinnata ,chemistry.chemical_compound ,chemistry ,Girdling ,Chlorophyll ,Botany ,Chlorophyll fluorescence ,Transpiration - Abstract
Photosynthetic rate (PN) and chlorophyll (Chl) fluorescence induction of source leaves in response to a low sink demand created by girdling the branch (GB) between the root-tuber-system and the leaves were studied in Dahlia pinnata L. cv. Rigolet during the stage of rapid tuber growth in the greenhouse. GB resulted in significantly lower values of PN, stomatal conductance (gs), and transpiration rate (E), but in higher leaf temperature (Tl) compared with those of controls. With exception of maximum quantum yield of photosystem 2 (PS 2) photochemistry (Fv/Fm) and maximum ratio of quantum yields of photochemical and concurrent non-photochemical processes in PS 2 (Fv/F0), no significant differences were observed in Chl fluorescence parameters between girdled and control leaves on days 1 and 2 after GB, indicating no apparent damage in the photosynthetic apparatus. However, longer girdling duration resulted in higher non-photochemical Chl fluorescence quenching (NPQ), but lower Fv/F0, actual efficiency of energy conversion in PS 2 under steady-state conditions (ΦPS2), and photochemical quenching coefficient (qP) in comparison with controls from 10:00 to 16:00 or 15:00 on days 4 and 5, respectively, indicating reversible injury in the photosynthetic apparatus.
- Published
- 2011
- Full Text
- View/download PDF
200. Construction of a trio-based structural variation panel utilizing activated T lymphocytes and long-read sequencing technology
- Author
-
Akihito Otsuki, Yasunobu Okamura, Noriko Ishida, Shu Tadaka, Jun Takayama, Kazuki Kumada, Junko Kawashima, Keiko Taguchi, Naoko Minegishi, Shinichi Kuriyama, Gen Tamiya, Kengo Kinoshita, Fumiki Katsuoka, and Masayuki Yamamoto
- Subjects
Biology (General) ,QH301-705.5 - Abstract
Long-read sequencing on activated T-cells from a sample of 333 Japanese individuals (representing 111 parent-offspring trios) provides a useful reference dataset of structural variation in the Japanese population.
- Published
- 2022
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.