171 results on '"Youzhi, Wang"'
Search Results
2. The interplay between autophagy and ferroptosis presents a novel conceptual therapeutic framework for neuroendocrine prostate cancer
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Youzhi Wang, Ning Wu, Junbo Li, Jiaming Liang, Diansheng Zhou, Qian Cao, Xuesong Li, and Ning Jiang
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NEPC ,Autophagy, ferroptosis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
In American men, the incidence of prostate cancer (PC) is the highest among all types of cancer, making it the second leading cause of mortality associated with cancer. For advanced or metastatic PC, antiandrogen therapies are standard treatment options. The administration of these treatments unfortunately carries the potential risk of inducing neuroendocrine prostate cancer (NEPC). Neuroendocrine differentiation (NED) serves as a crucial indicator of prostate cancer development, encompassing various factors such as phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/AKT/mTOR), Yes-associated protein 1 (YAP1), AMP-activated protein kinase (AMPK), miRNA. The processes of autophagy and ferroptosis (an iron-dependent form of programmed cell death) play pivotal roles in the regulation of various types of cancers. Clinical trials and preclinical investigations have been conducted on many signaling pathways during the development of NEPC, with the deepening of research, autophagy and ferroptosis appear to be the potential target for regulating NEPC. Due to the dual nature of autophagy and ferroptosis in cancer, gaining a deeper understanding of the developmental programs associated with achieving autophagy and ferroptosis may enhance risk stratification and treatment efficacy for patients with NEPC.
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- 2024
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3. Improved visualization of median, ulnar nerves, and small branches in the wrist and palm using contrast-enhanced magnetic resonance neurography
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Jiamin Kang, Wenjun Wu, Xiangchuang Kong, Yu Su, Dingxi Liu, Chungao Li, Nan Gao, Youzhi Wang, Chuansheng Zheng, Yuxiong Weng, and Lixia Wang
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Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Background: Magnetic resonance imaging of peripheral nerves in the wrist and palm is challenging due to the small size, tortuous course, complex surrounding tissues, and accompanying blood vessels. The occurrence of carpal palmar lesions leads to edema, swelling, and mass effect, which may further interfere with the display and identification of nerves. Objective: To evaluate whether contrast-enhanced magnetic resonance neurography (ceMRN) improves the visualization of the morphology and pathology of the median, ulnar nerves, and their small branches in the wrist and palm. Design: An observational study. Methods: In total 57 subjects, including 36 volunteers and 21 patients with carpal palmar lesions, were enrolled and underwent ceMRN and non-contrast MRN (ncMRN) examination at 3.0 Tesla. The degree of vascular suppression, nerve visualization, diagnostic confidence, and lesion conspicuity was qualitatively assessed by two radiologists. Kappa statistics were obtained for inter-reader agreement. The signal-to-noise ratio, contrast ratio (CR), and contrast-to-noise ratio (CNR) of the median nerve were measured. The subjective ratings and quantitative measurements were compared between ncMRN and ceMRN. Results: The inter-reader agreement was excellent ( k > 0.8) for all qualitative assessments and visualization assessment of each nerve segment. Compared with ncMRN, ceMRN significantly improved vascular suppression in volunteers and patients (both p
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- 2024
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4. Deep gray matters iron deposition is positively associated with white matter hyperintensity in hypertension
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Yu Su, Wenjun Wu, Ziji Qin, Chungao Li, Jie Zhao, Jiamin Kang, Youzhi Wang, Chuansheng Zheng, Ewart Mark Haacke, and Lixia Wang
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high‐iron content region ,hypertension ,iron ,quantitative susceptibility mapping ,white matter hyperintensity ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract The association and underlying mechanisms between iron deposition and white matter hyperintensity (WMH) remain unclear. In this study, quantitative susceptibility mapping (QSM) was used to quantify deep gray matters iron deposition and to explore the association from both global and regional perspectives. A total of 84 patients with hypertension and 26 healthy controls underwent a strategically acquired gradient echo (STAGE) protocol, and the multi‐echo data were used to reconstruct QSM images. The susceptibilities were used to describe iron content. Global region (RI) susceptibilities were measured in regions of interest, and age‐related thresholds were used to determine high‐iron content region (RII) susceptibilities. Compared with healthy controls, hypertension had higher total WMH scores and regional scores (all p = .001) and higher susceptibilities using the RI or RII analysis (all p
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- 2023
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5. TNIK drives castration-resistant prostate cancer via phosphorylating EGFR
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Jianing Guo, Jiaming Liang, Youzhi Wang, Tao Guo, Yihao Liao, Boqiang Zhong, Shuyue Guo, Qian Cao, Junbo Li, Amilcar Flores-Morales, Yuanjie Niu, and Ning Jiang
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Biochemistry ,Molecular biology ,Cancer ,Science - Abstract
Summary: The development of castration-resistant prostate cancer (CRPC) is driven by intricate genetic and epigenetic mechanisms. Traf2- and Nck-interacting kinase (TNIK) has been reported as a serine/threonine kinase associated with tumor cell proliferation or unfavorable cancer behavior. The microarray approach revealed a substantial upregulation of TNIK expression levels, enabling us to investigate the functional behaviors of the TNIK gene in CRPC. Specifically, we discovered that AR suppresses TNIK gene transcription in LNCaP and C4-2 cells by forming a complex with H3K27me3. Following the reduction of AR levels induced by androgen deprivation therapy (ADT), TNIK is recruited to activate EGFR signaling through phosphorylation in C4-2 cells, thereby promoting CRPC progression. Our findings unveil a regulatory role of AR as a repressor for TNIK while also highlighting how TNIK activates the EGFR pathway via phosphorylation to drive CRPC progression. Consequently, targeting TNIK may represent an appealing therapeutic strategy for CRPC.
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- 2024
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6. YAP1 Regulates the YAP1/AR/PSA Axis through Autophagy in Castration-Resistant Prostate Cancer and Mediates T-Cell Immune and Inflammatory Cytokine Infiltration
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Youzhi Wang, Ning Wu, Junbo Li, Diansheng Zhou, Jiaming Liang, Qian Cao, Zhaokai Guan, Yangyang Xu, and Ning Jiang
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YAP1 ,AR ,PSA ,autophagy ,CRPC ,immune infiltration ,Biology (General) ,QH301-705.5 - Abstract
The emergence of castration-resistant prostate cancer (CRPC) following androgen deprivation therapy (ADT) is associated with increased malignancy and limited treatment options. This study aims to investigate potential connections between immune cell infiltration and inflammatory cytokines with the YAP1/AR/PSA axis by exploring their interactions with autophagy. Our research reveals heightened levels of Yes-associated protein 1 (YAP1) expression in CRPC tissues compared with tissues from androgen-dependent prostate cancer (ADPC) and benign prostate hyperplasia (BPH). Additionally, a correlation was observed between YAP1 and PSA expressions in CRPC tissues, suggesting that YAP1 may exert a regulatory influence on PSA expression within CRPC. Enhanced YAP1 expression in C4-2 cells resulted in the upregulation of androgen receptor (AR) nuclear translocation and intracellular prostate-specific antigen (PSA) levels. Conversely, the suppression of YAP1 led to a decrease in PSA expression, suggesting that YAP1 may positively regulate the PSA in castration-resistant prostate cancer (CRPC) by facilitating AR nuclear import. The modulation of the autophagy activity exerts a significant impact on the expression levels of YAP1, the AR, and the PSA. Moreover, recent advancements in immunity and inflammation studies present promising avenues for potential therapies targeting prostate cancer (PC).
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- 2024
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7. Ferroptosis landscape in prostate cancer from molecular and metabolic perspective
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Jiaming Liang, Yihao Liao, Pu Wang, Kun Yang, Youzhi Wang, Keke Wang, Boqiang Zhong, Diansheng Zhou, Qian Cao, Junbo Li, Yang Zhao, and Ning Jiang
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Prostate cancer is a major disease that threatens men’s health. Its rapid progression, easy metastasis, and late castration resistance have brought obstacles to treatment. It is necessary to find new effective anticancer methods. Ferroptosis is a novel iron-dependent programmed cell death that plays a role in various cancers. Understanding how ferroptosis is regulated in prostate cancer will help us to use it as a new way to kill cancer cells. In this review, we summarize the regulation and role of ferroptosis in prostate cancer and the relationship with AR from the perspective of metabolism and molecular pathways. We also discuss the feasibility of ferroptosis in prostate cancer treatment and describe current limitations and prospects, providing a reference for future research and clinical application of ferroptosis.
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- 2023
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8. Study on the thermal temperature field of hydration of prefabricated box girders at an early age and its effects
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Yan, Li, primary, Chuanyao, Gu, additional, and Youzhi, Wang, additional
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- 2023
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9. Cathepsin K regulates the tumor growth and metastasis by IL-17/CTSK/EMT axis and mediates M2 macrophage polarization in castration-resistant prostate cancer
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Ning Wu, YouZhi Wang, KeKe Wang, BoQiang Zhong, YiHao Liao, JiaMing Liang, and Ning Jiang
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Cytology ,QH573-671 - Abstract
Abstract A common stage of advanced prostate cancer is castration-resistant prostate cancer (CRPC), greater understanding of which is required in order to address and solve the clinically difficult challenge. Cathepsin K (CTSK) is a cysteine protease that usually has a strong activity of degrading extracellular matrix and is related to osteoclast-mediated bone destruction. However, the mechanism of CTSK-regulation in CRPC is still unclear to us. The current study aimed to analyze the expression of differentially expressed genes (DEGs) in patient samples (from localized PC and CRPC). Interestingly, we found that CTSK to be significantly up-regulated in CRPC. Through further signal pathway enrichment analysis, we found that the IL-17 signaling pathway to be highly correlated with CTSK. The oncogenic functions of CTSK and IL-17 in CRPC were proven by a series of in vivo and in vitro experiments. Possible downstream molecules of CTSK were investigated, which could serve as control elements to regulate the expression of EMT, thereby facilitating the metastasis and excessive proliferation of PC cells. Expression of CTSK was related to high concentration of M2 tumor-associated macrophages (TAMs) M2 in CRPC. A CTSK-mediated feedback circuit between TAMs and CRPC tissues was indicated in the process of transfer, proving the possibility of CTSK could be use as an available therapeutic target for CRPC.
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- 2022
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10. Nanopore Structure and Multifractal Characteristics of Continental Shale Oil Reservoir: A Case Study from Ziliujing Shales in the Sichuan Basin
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Youzhi Wang, Wei Li, Xiandong Wang, Zhiguo Wang, Weiqi Ma, Yanping Zhu, Mengdi Sun, Bo Liu, Lijuan Cheng, and Xiaofei Fu
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Sichuan Basin ,shale oil and gas ,nanopores ,low-temperature gas adsorption ,multifractal analysis ,Naval architecture. Shipbuilding. Marine engineering ,VM1-989 ,Oceanography ,GC1-1581 - Abstract
Thermal maturity of the shales from the Ziliujing Formation of the Jurassic age in the Sichuan Basin is in the hydrocarbon generation window, which makes it a candidate for shale oil and gas development. The meso- and macropore characteristics and heterogeneity of shales are important factors affecting the occurrence and development of oil and gas. However, the meso- and macropores of the Ziliujing shales have not been systematically studied. Thus, the mineral compositions and total organic carbon (TOC) of samples from this formation, as well as its pore structure, are analyzed by low-temperature N2 adsorption technique. Moreover, the heterogeneity of the pores was determined by multifractal analysis. The results show that the Ziliujing shales can be classified into three types according to the distributions of mineral compositions of carbonate and mixed and argillaceous shales. Results revealed that the smallest meso- and macropore volume (PV), the smallest specific surface area (SSA), and the largest average pore diameter (APD) occur in the carbonate shales. However, the largest PV and SSA and the smallest APD are observed in the argillaceous shales. The porosity of carbonate shales is mainly concentrated between 5 nm and 30 nm. Compared with carbonate shales, the porosity with pore sizes less than 30 nm of mixed and argillaceous shales shows a rapid increase. Furthermore, inorganic minerals are the main factors affecting the pore distributions, while TOC shows a weak effect. Herein, clay minerals significantly increase the mesopore volume and the pore number with a size of less than 30 nm. The Dq-q curves reveal that the meso- and macropore distributions of Ziliujing shales show multifractal behavior, but the multifractal characteristics of pores of various shales are distinctly different. The information dimension D1, the Hurst exponent H, and the width of the right side D0–D10 are key indicators to distinguish the local variations within the pore structure of different types of shales. The carbonate shales have the largest multifractal spectra width and the smallest D1 and H, while the opposite trend is found for the argillaceous shales. Clay minerals reduce the heterogeneity of the meso- and macropore distributions and increase the pore connectivity. Nevertheless, the carbonate minerals exhibit a reverse trend. Finally, it was found that TOC does not impact pore complexity as much. Collectively, this study supports our understanding of the occurrence of shale oil within various reservoir facies, thereby providing a guideline for future explorations in the Ziliujing Formation of the Jurassic age in the Sichuan Basin.
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- 2023
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11. BUB1 drives the occurrence and development of bladder cancer by mediating the STAT3 signaling pathway
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Ning Jiang, Yihao Liao, Miaomiao Wang, Youzhi Wang, Keke Wang, Jianing Guo, Peikang Wu, Boqiang Zhong, Tao Guo, and Changli Wu
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Bladder cancer ,BUB1 ,STAT3 ,Phosphorylation ,Proliferation ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background The incidence of bladder urothelial carcinoma (UC), a common malignancy of the urinary tract, is approximately three times higher in men than in women. High expression of the mitotic kinase BUB1 is associated with the occurrence and development of several cancers, although the relationship between BUB1 and bladder tumorigenesis remains unclear. Methods Using a microarray approach, we found increased BUB1 expression in human BCa. The association between BUB1 and STAT3 phosphorylation was determined through molecular and cell biological methods. We evaluated the impact of pharmacologic inhibition of BUB1 kinase activity on proliferation and BCa progression in vitro and in vivo. Results In this study, we found that BUB1 expression was increased in human bladder cancer (BCa). We further identified through a series of molecular and cell biological approaches that BUB1 interacted directly with STAT3 and mediated the phosphorylation of STAT3 at Ser727. In addition, the findings that pharmacologic inhibition of BUB1 kinase activity significantly suppressed BCa cell proliferation and the progression of bladder cancer in vitro and in vivo were further verified. Finally, we found that the BUB1/STAT3 complex promoted the transcription of STAT3 target genes and that depletion of BUB1 and mutation of the BUB1 kinase domain abrogated this transcriptional activity, further highlighting the critical role of kinase activity in the activation of STAT3 target genes. A pharmacological inhibitor of BUB1 (2OH-BNPP1) was able to significantly inhibit the growth of BCa cell xenografts. Conclusion This study showed that the BUB1 kinase drives the progression and proliferation of BCa by regulating the transcriptional activation of STAT3 signaling and may be an attractive candidate for therapeutic targeting in BCa.
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- 2021
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12. Characteristics and Factors Influencing Pore Structure in Shale Oil Reservoirs of Different Lithologies in the Jurassic Lianggaoshan Formation of the Yingshan Gas Field in Central Sichuan Basin
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Youzhi Wang, Hucheng Deng, Zhiguo Wang, Xiandong Wang, Qian Cao, Dean Cheng, Yanping Zhu, and An Li
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central Sichuan Basin ,Lianggaoshan Formation ,shale ,pore structure characteristics ,influencing factors ,Mineralogy ,QE351-399.2 - Abstract
Shale in the Jurassic Lianggaoshan Formation in central Sichuan exhibits strong heterogeneity. The study of the pore structure characteristics of different lithologies is crucial to the selection of the target interval. Shale samples of the Lianggaoshan Formation from well YS5 in the central part of the Sichuan Basin were analyzed using scanning electron microscopy, low-temperature nitrogen adsorption, high-pressure mercury injection (HPMI), and large -field splicing method -based scanning electron microscopy (LFS-SEM) to elucidate the pore structure characteristics of shale and their influencing factors. The mineral composition of the reservoir in the study area was diverse, primarily consisting of clay minerals, followed by quartz and calcite. The reservoir space comprised intergranular, granular, and organic matter pores, and oil was observed to fill the reservoir space. Reservoir characteristics varied with the lithological properties. In clayey shale, intergranular pores located in clay mineral particles and pores between pyrite and natural fractures were mainly observed, with a bimodal distribution of pore size and peak distribution of 10–50 nm and >100 nm. The storage space of ash-bearing shale mainly consisted of intragranular pores and intergranular (crystalline) micropores, with pore sizes primarily concentrated in the 10–50 nm range. The storage space in silty shale mainly developed in clastic mineral particles such as quartz, followed by clay mineral intergranular pores with a relatively wide distribution of sizes. Pores were mainly inkbottle-shaped and slit-type/plate-type pores, with an average specific surface area of approximately 6.9046 m2·g−1 and an average pore volume of approximately 0.0150 cm3·g−1. The full-pore capillary pressure curve was established using a combination of gas adsorption–desorption tests and HPMI. The fractal dimension of the sample pore structure was calculated, and a significant linear correlation was found between clay mineral content and the fractal dimension. Thus, the pore structure characteristics were mainly controlled by the content and distribution of clay minerals.
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- 2023
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13. Microscopic Analysis of Natural Fracture Properties in Organic-Rich Continental Shale Oil Reservoirs: A Case Study from the Lower Jurassic in the Sichuan Basin, China
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Xuefeng Bai, Saipeng Huang, Xiandong Wang, Zhiguo Wang, Youzhi Wang, Weiqi Ma, Yanping Zhu, Mengdi Sun, Bo Liu, Xiaofei Fu, Lijuan Cheng, Likai Cui, and Yudong Hou
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Sichuan Basin ,Lower Jurassic ,shale oil reservoir ,natural fracture ,CT scanning ,Naval architecture. Shipbuilding. Marine engineering ,VM1-989 ,Oceanography ,GC1-1581 - Abstract
Natural fractures are of paramount importance in storing carbon in shale oil reservoirs, where ultra-low porosity and permeability necessitate their essentiality for enhanced oil recovery. Therefore, comprehensively clarifying the characteristics of natural fractures in shale oil reservoirs is imperative. This paper focuses on investigating the microscopic features of natural fractures in organic-rich continental shale oil reservoirs that are commonly found in the Lower Jurassic strata of the Sichuan Basin, employing them as a representative example. Multiple methods were utilized, including mechanical testing, Kaiser testing, multi-scale CT scanning (at 2 mm, 25 mm, and 100 mm scales), and a numerical simulation of fluid seepage in fracture models. The results revealed that the in situ stress of the target seam displays the characteristic of σH > σv > σh, with σv and σh being particularly similar. The relatively high lateral stress coefficient (ranging from 1.020 to 1.037) indicates that the horizontal stresses are higher than the average level. Although the 2 mm CT scan provides a more detailed view of fractures and connected pores, it primarily exhibited more pore information due to the high resolution, which may not fully unveil additional information about the fractures. Thus, the 25 mm shale core is a better option for studying natural fractures. The tortuosity of the different fractures indicated that the morphology of larger fractures is more likely to remain stable, while small-scale fractures tend to exhibit diverse shapes. The simulations demonstrated that the stress sensitivity of fracture permeability is approximately comparable across different fracture scales. Therefore, our research can enhance the understanding of the properties of natural fractures, facilitate predicting favorable areas for shale oil exploration, and aid in evaluating the carbon storage potential of shale oil reservoirs.
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- 2023
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14. A model integrating the system dynamic model with the risk based two-stage stochastic robust programming model for agricultural-ecological water resources management
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Youzhi, Wang, Alexander, Fernald, and Ping, Guo
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- 2021
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15. Autophagy provides a conceptual therapeutic framework for bone metastasis from prostate cancer
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YouZhi Wang, Ning Wu, and Ning Jiang
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Cytology ,QH573-671 - Abstract
Abstract Prostate cancer is a common malignant tumor, which can spread to multiple organs in the body. Metastatic disease is the dominant reason of death for patients with prostate cancer. Prostate cancer usually transfers to bone. Bone metastases are related to pathologic fracture, pain, and reduced survival. There are many known targets for prostate cancer treatment, including androgen receptor (AR) axis, but drug resistance and metastasis eventually develop in advanced disease, suggesting the necessity to better understand the resistance mechanisms and consider multi-target medical treatment. Because of the limitations of approved treatments, further research into other potential targets is necessary. Metastasis is an important marker of cancer development, involving numerous factors, such as AKT, EMT, ECM, tumor angiogenesis, the development of inflammatory tumor microenvironment, and defect in programmed cell death. In tumor metastasis, programmed cell death (autophagy, apoptosis, and necroptosis) plays a key role. Malignant cancer cells have to overcome the different forms of cell death to transfer. The article sums up the recent studies on the mechanism of bone metastasis involving key regulatory factors such as macrophages and AKT and further discusses as to how regulating autophagy is crucial in relieving prostate cancer bone metastasis.
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- 2021
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16. Specific classification and new therapeutic targets for neuroendocrine prostate cancer: A patient-based, diagnostic study
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YouZhi Wang, Ning Wu, KeKe Wang, YiHao Liao, JiaNing Guo, BoQiang Zhong, Tao Guo, JiaMing Liang, and Ning Jiang
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neuroendocrine prostate cancer ,neuroendocrine differentiation prostate cancer ,high-risk prostate cancer ,therapeutic targets ,metastasis-free survival ,Genetics ,QH426-470 - Abstract
Objective: Neuroendocrine prostate cancer (NEPC) is an aggressive variant of prostate cancer (PC) that may arise de novo or in patients previously treated with hormonal therapies for prostate adenocarcinoma as a mechanism of resistance. In our investigation, there appeared to be a strong correlation between neuroendocrine differentiation prostate cancer (NEDPC) and NEPC. The objectives of this study included exploring whether NEDPC is an intermediate stage in the progression of high-risk prostate cancer (HRPC) to NEPC and identifying risk factors and new targets associated with survival in the treatment of NEPC.Methods: The selected prostate cancer patients were progressed to high-risk and characterized by neuroendocrine. We collected the clinical data and characteristics of patients with three types of cancer: the incidence of metastasis, site and time of metastasis, recurrence rate, related treatment methods, etc. The similarity and differences of the three groups were compared through experiment and database.Results: By analyzing the clinical data and immunohistochemical results, we found that there seems to be a clinical feature of neuroendocrine differentiation (NED) status in between when patients progress from PC to NEPC. Finding novel treatment targets would therefore be beneficial by taking into account NEDPC as the stage of PC progression prior to NEPC. The metastasis-free survival curve and the immunohistochemical results are informing us that NEDPC can be a pre-state for diagnosing NEPC.Conclusion: NEPC is a late PC symptom that is frequently disregarded and has a bad prognosis. Finding novel treatment targets would therefore be beneficial by taking into account NEDPC as the stage of PC progression prior to NEPC.
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- 2022
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17. Prediction of multiscale lamina structure and high quality reservoirs in shale: A case study of the Lianggaoshan Formation in northeastern Sichuan Basin, China
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youzhi, wang, primary, cui, mao, additional, xuefeng, bai, additional, xiaodong, wang, additional, zhiguo, wang, additional, and Ce, An, additional
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- 2024
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18. Parallel analysis of global garlic gene expression and alliin content following leaf wounding
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Xuqin Yang, Yiren Su, Jiaying Wu, Wen Wan, Huijian Chen, Xiaoying Cao, Junjuan Wang, Zhong Zhang, Youzhi Wang, Deliang Ma, G. J. Loake, and Jihong Jiang
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Garlic ,Allium sativum ,Transcriptomics ,Alliin ,Gene prediction ,Botany ,QK1-989 - Abstract
Abstract Background Allium sativum (garlic) is an economically important food source and medicinal plant rich in sulfides and other protective substances such as alliin, the precursor of allicin biosynthesis. Cysteine, serine and sulfur is the precursor of alliin biosynthesis. However, little is known about the alliin content under abiotic stress or the mechanism by which it is synthesized. Results The findings revealed that the content of alliin was lowest in the garlic roots, and highest in the buds. Furthermore, alliin levels decreased in mature leaves following wounding. Transcriptome data generated over time after wounding further revealed significant up-regulation of genes integral to the biosynthetic pathways of cysteine and serine in mature garlic leaves. Conclusions The findings suggest that differential expression of cysteine, serine and sulfide-related genes underlies the accumulation of alliin and its precursors in garlic, providing a basis for further analyses of alliin biosynthesis.
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- 2021
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19. Study on the rheological behaviour of UHPC considering the combination of temperature and mineral admixture
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Changjin Tian, Youzhi Wang, Yaping Wei, and Dengjie Wang
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Civil and Structural Engineering - Published
- 2023
20. I2-Mediated [6 + 1] Annulation of Alkynes with MsONH3OTf: Direct Synthesis of Benzo[b]azepines
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Daijiao Zhuang, Shixuan Jiang, Youzhi Wang, Xiajun Wang, Siwei Shen, and Rulong Yan
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Organic Chemistry ,Physical and Theoretical Chemistry ,Biochemistry - Published
- 2023
21. Discovery of Novel N-Hydroxy-1,2,4-oxadiazole-5-formamides as ASM Direct Inhibitors for the Treatment of Atherosclerosis
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Kan Yang, Keyi Nong, Fei Xu, Yu Chen, Jinying Yu, Lizhi Lin, Xiao Hu, Youzhi Wang, Ting Li, Jibin Dong, and Jinxin Wang
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Drug Discovery ,Molecular Medicine - Published
- 2023
22. Evaluation of long-service-life cable-stayed bridge strengthening schemes using a two-phase finite element model updating technology
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Kai Qiu, Shuchen Li, Huahuai Sun, Youzhi Wang, and Bin Lv
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Architecture ,Building and Construction ,Safety, Risk, Reliability and Quality ,Civil and Structural Engineering - Published
- 2023
23. OTUB1 Promotes Progression and Proliferation of Prostate Cancer via Deubiquitinating and Stabling Cyclin E1
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Yihao Liao, Ning Wu, Keke Wang, Miaomiao Wang, Youzhi Wang, Jie Gao, Boqiang Zhong, Fuling Ma, Yudong Wu, and Ning Jiang
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cyclin E1 ,OTUB1 ,prostate cance ,progression ,proliferation ,Biology (General) ,QH301-705.5 - Abstract
Background: Prostate cancer (PCa) is currently the most common cancer among males worldwide. It has been reported that OTUB1 plays a critical role in a variety of tumors and is strongly related to tumor proliferation, migration, and clinical prognosis. The aim of this research is to investigate the regulatory effect of OTUB1 on PCa proliferation and the underlying mechanism.Methods: Using the TCGA database, we identified that OTUB1 was up-regulated in PCa, and observed severe functional changes in PC3 and C4-2 cells through overexpression or knock down OTUB1. Heterotopic tumors were implanted subcutaneously in nude mice and IHC staining was performed on tumor tissues. The relationship between OTUB1 and cyclin E1 was identified via Western blotting and immunoprecipitations assays.Results: We found that the expression of OTUB1 in PCa was significantly higher than that in Benign Prostatic Hyperplasia (BPH). Overexpression OTUB1 obviously promoted the proliferation and migration of PC3 and C4-2 cells via mediating the deubiquitinated Cyclin E1, while OTUB1 knockout has the opposite effect. The nude mice experiment further explained the above conclusions. We finally determined that OTUB1 promotes the proliferation and progression of PCa via deubiquitinating and stabling Cyclin E1.Conclusions: Our findings reveal the critical role of OTUB1 in PCa, and OTUB1 promotes the proliferation and progression of PCa via deubiquitinating and stabilizing Cyclin E1. Blocking OTUB1/Cyclin E1 axis or applying RO-3306 could significantly repress the occurrence and development of PCa. OTUB1/Cyclin E1 axis might provide a new and potential therapeutic target for PCa.
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- 2021
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24. An integrated approach for agricultural water resources management under drought with consideration of multiple uncertainties
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Youzhi Wang, Xiangyu Zhang, Yifei Jia, Jinxu Han, Xinwei Guo, and Qiangkun Li
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Environmental Engineering ,Environmental Chemistry ,Safety, Risk, Reliability and Quality ,General Environmental Science ,Water Science and Technology - Published
- 2022
25. Intelligent optimisation of an ultra-high-performance concrete (UHPC) multi-objective mixture ratio based on particle swarm optimisation
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Changjin Tian, Youzhi Wang, Zhongyuan Ren, Qilin Yang, and Xixi Xu
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Mechanics of Materials ,Civil and Structural Engineering - Published
- 2022
26. Correction: Autophagy provides a conceptual therapeutic framework for bone metastasis from prostate cancer
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YouZhi Wang, Ning Wu, and Ning Jiang
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Cytology ,QH573-671 - Published
- 2021
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27. Involvement of erbB4 and tumor marker genes in renal carcinoma regulatory network
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Xiaofu Wang, Bin Hao, Changbao Xu, Xinghua Zhao, Changwei Liu, Xiaohan Chu, Yuan Lv, Yongli Zhao, Shengwei Zhang, Pengsen Wang, and Youzhi Wang
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Renal carcinoma ,Tumor marker ,erbb4 ,Regulatory network ,Biology (General) ,QH301-705.5 - Abstract
Background: Renal carcinoma is a common urologic tumor, and there is no ideal tumor marker for clinical diagnosis except for imaging diagnosis. This study aims to screen the serum tumor markers closely related with the benign and malignant of renal carcinoma out and chart out the regulatory network that involves renal carcinoma-related genes. Methods: Based on 96 pathologically diagnosed renal cancer patients, factors strongly linked to renal carcinoma character were selected using Fisher discriminant analysis. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases were utilized to manipulate function annotation of erbB4 and the selected genes and pathway analysis. Results: Four essential tumor markers CYFRA21-1, CA125, VHL and HIF-1β were successfully screened out. Using GO and KEGG databases, the regulatory network of renal cancer cell escaping apoptosis was charted out on the basis of erbB4 signaling pathway. Conclusion: Serum tumor marker genes play a certain part in the genesis and development of renal carcinoma. We preliminarily illustrated the molecular mechanism of these markers to predict tumor, laying a foundation for further exploration in renal carcinoma.
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- 2017
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28. Synthesis of Benzimidazo[2,1-a]isoquinoline and Indolo[2,1-a]isoquinoline Derivatives via Copper-Catalyzed Silylation/Methylation of 2-Arylindoles and 2-Arylbenzimidazoles
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Pengbo Zhao, Youzhi Wang, Xiajun Wang, Daijiao Zhuang, and Rulong Yan
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Organic Chemistry - Published
- 2022
29. Design and synthesis of a novel class of PDE4 inhibitors with antioxidant properties as bifunctional agents for the potential treatment of COPD
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Youzhi Wang, Huifang Wang, Guoqing Yang, Qingjing Hao, Kan Yang, Huizhen Shen, Yulong Wang, and Jinxin Wang
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Pharmacology ,Organic Chemistry ,Drug Discovery ,General Medicine - Published
- 2023
30. Deubiquitinating enzyme OTUB1 in immunity and cancer: Good player or bad actor?
- Author
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Yihao Liao, Mengyue Yang, Keke Wang, Youzhi Wang, Boqiang Zhong, and Ning Jiang
- Subjects
Cancer Research ,Deubiquitinating Enzymes ,Oncology ,Neoplasms ,Animals ,Humans ,CD8-Positive T-Lymphocytes - Abstract
OTU domain-containing ubiquitin aldehyde-binding proteins 1 (OTUB1) is the most important element of the deubiquitinase OTU superfamily, which has been identified as an essential regulator of diverse physiological processes, such as DNA damage repair and cytokines secretion. Recently, we found that the pro-carcinogenesis role of OTUB1 and the relationship between OTUB1 and immune response have gradually become the research hot-spot. OTUB1 regulates NK/CD8 T cell activation, autoimmune diseases, PD-L1 mediated immune evasion, viral or bacterial infection related immune response and the occurrence and progression of various cancers via deubiquitinating and stabilizing related proteins. This review provides a comprehensive description about the role and regulatory axis of OTUB1. We can explore the balance between immune response and defense via regulating the level of OTUB1, and targeting OTUB1 might restrain the progression of cancers. This review highlights the experimental evidence that OTUB1 is a feasible and potential therapeutic target against various cancers progression and immune diseases or disorder.
- Published
- 2022
31. Ce-based organic framework enhanced the hydrogen evolution ability of ZnCdS photocatalyst
- Author
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Youzhi Wang, Chuansheng Chen, Jing Fang, Hongguang Jin, and Yaopeng Li
- Subjects
Fuel Technology ,Materials science ,Chemical engineering ,Renewable Energy, Sustainability and the Environment ,Yield (chemistry) ,Composite number ,Microwave irradiation ,Photocatalysis ,Energy Engineering and Power Technology ,Nanoparticle ,Hydrogen evolution ,Condensed Matter Physics ,Hydrogen production - Abstract
Ce-based organic framework materials [UIO-66(Ce)] were prepared, and the UIO-66(Ce)/ZnCdS composite was attained by microwave irradiation. Moreover, the photocatalytic hydrogen production activity was evaluated. The experimental results revealed that the ZnCdS nanoparticle was decorated on the surface of UIO-66(Ce), and the hydrogen production ability of ZnCdS nanoparticle was improved by UIO-66(Ce) significantly. The hydrogen production yield of UIO-66(Ce)/ZnCdS reaches 3.958 mmol/g·h, in which is as about 1.95 times as that of ZnCdS (2.031 mmol/g·h). The improvement for photocatalytic hydrogen production yield is because UIO-66(Ce) can facilitate the photoinduced carriers to separating.
- Published
- 2022
32. Enzyme-instructed self-assembly (EISA) assists the self-assembly and hydrogelation of hydrophobic peptides
- Author
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Xinxin Li, Youzhi Wang, Yiming Zhang, Zhimou Yang, Jie Gao, and Yang Shi
- Subjects
inorganic chemicals ,technology, industry, and agriculture ,Biomedical Engineering ,Biocompatible Materials ,Hydrogels ,macromolecular substances ,General Chemistry ,General Medicine ,Alkaline Phosphatase ,Nanostructures ,enzymes and coenzymes (carbohydrates) ,bacteria ,General Materials Science ,Peptides - Abstract
Enzyme-instructed self-assembly (EISA) has several advantages in the preparation of supramolecular self-assembly materials for biomedical applications. In this study, we demonstrated that the enzyme-instructed self-assembly (EISA) strategy could assist the self-assembly and hydrogelation of two hydrophobic and bioactive peptides, tyroservatide (YSV) and laminin pentapeptide (YIGSR). We first synthesized the peptide derivatives of Nap-GFFYSV (peptide 1) and Nap-GFFYIGSR (peptide 2) and found that both peptides could not self-assemble into hydrogels due to their poor solubility. We therefore designed the phosphorylated precursors of the two hydrophobic peptides, Nap-GFFpYSV (precursor 1) and Nap-GFFpYIGSR (precursor 2), respectively, which had good solubility and can be dephosphorylated by alkaline phosphatase (ALP) to form supramolecular hydrogels. In addition, we found that the EISA could also occur on the surface of cells that overexpress ALP. The EISA strategy was a powerful method to generate hydrogels of hydrophobic compounds. We envision the big promise of the strategy in the preparation of biomaterials and nanomaterials of hydrophobic bioactive molecules.
- Published
- 2022
33. A study on Creativity based on Parametric Design
- Author
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Youzhi Wang and Ken Nah
- Subjects
General Medicine - Published
- 2021
34. BUB1 drives the occurrence and development of bladder cancer by mediating the STAT3 signaling pathway
- Author
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Peikang Wu, Keke Wang, Tao Guo, Jianing Guo, Miaomiao Wang, Changli Wu, Ning Jiang, Boqiang Zhong, Youzhi Wang, and Yihao Liao
- Subjects
Male ,STAT3 Transcription Factor ,Cancer Research ,Cell ,Proliferation ,BUB1 ,Biology ,Protein Serine-Threonine Kinases ,medicine.disease_cause ,Transfection ,Stat3 Signaling Pathway ,STAT3 ,Mice ,medicine ,Animals ,Humans ,Kinase activity ,Phosphorylation ,skin and connective tissue diseases ,RC254-282 ,Cell Proliferation ,Bladder cancer ,Cell growth ,Kinase ,Research ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,medicine.anatomical_structure ,Oncology ,Urinary Bladder Neoplasms ,Cancer research ,Carcinogenesis ,Signal Transduction - Abstract
Background The incidence of bladder urothelial carcinoma (UC), a common malignancy of the urinary tract, is approximately three times higher in men than in women. High expression of the mitotic kinase BUB1 is associated with the occurrence and development of several cancers, although the relationship between BUB1 and bladder tumorigenesis remains unclear. Methods Using a microarray approach, we found increased BUB1 expression in human BCa. The association between BUB1 and STAT3 phosphorylation was determined through molecular and cell biological methods. We evaluated the impact of pharmacologic inhibition of BUB1 kinase activity on proliferation and BCa progression in vitro and in vivo. Results In this study, we found that BUB1 expression was increased in human bladder cancer (BCa). We further identified through a series of molecular and cell biological approaches that BUB1 interacted directly with STAT3 and mediated the phosphorylation of STAT3 at Ser727. In addition, the findings that pharmacologic inhibition of BUB1 kinase activity significantly suppressed BCa cell proliferation and the progression of bladder cancer in vitro and in vivo were further verified. Finally, we found that the BUB1/STAT3 complex promoted the transcription of STAT3 target genes and that depletion of BUB1 and mutation of the BUB1 kinase domain abrogated this transcriptional activity, further highlighting the critical role of kinase activity in the activation of STAT3 target genes. A pharmacological inhibitor of BUB1 (2OH-BNPP1) was able to significantly inhibit the growth of BCa cell xenografts. Conclusion This study showed that the BUB1 kinase drives the progression and proliferation of BCa by regulating the transcriptional activation of STAT3 signaling and may be an attractive candidate for therapeutic targeting in BCa.
- Published
- 2021
35. UV-irradiation assisted corrosion protective oxides film on pure Sn solder substrate exposed to atmospheric environment
- Author
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Youzhi Wang, Long Hao, Jianqiu Wang, and Wei Ke
- Subjects
Mechanics of Materials ,Materials Chemistry ,General Materials Science - Published
- 2023
36. High-temperature aging time-induced composition and thickness evolution in the native oxides film on Sn solder substrate
- Author
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Youzhi Wang, Xizhong An, Long Hao, Xu Sun, Xiahe Liu, and Chuang Qiao
- Subjects
Materials science ,Oxide ,Joint surface ,Substrate (electronics) ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Corrosion ,chemistry.chemical_compound ,chemistry ,Soldering ,Composition (visual arts) ,Electrical and Electronic Engineering ,Composite material ,Layer (electronics) ,Resistivity distribution - Abstract
The presence of a native oxides film on Pb-free Sn solder joint surface is inevitable and its structure could be influenced by high-temperature aging due to heat release of electronic device itself during application. In this work, the effect of high-temperature aging time at 90 °C on composition and thickness evolution of a native oxides film, formed on pure Sn solder substrate after 24 h exposure to 90% RH atmosphere at 25 °C, has been characterized by AR-XPS and EIS. Results indicate that the outer layer of the as-obtained native oxide film consists of more Sn(OH)4 and less SnO2, and the inner layer consists of more SnO and less Sn(OH)2. The aging process initially accelerates both the dehydration/oxidation of hydroxides/stannous oxides in the film and the fresh Sn substrate to form SnO2, contributing to an increasing thickness and improved corrosion resistance of the film. However, an extended aging time deteriorates the structure of the film with more cracks and lowered corrosion resistance. Moreover, comparison finds that, without any assumption on models of resistivity distribution through the oxides film, the film thickness determination by Cole–Cole representation of the EIS results fits well with that by AR-XPS analyses.
- Published
- 2021
37. Static Strength of Friction-Type High-Strength Bolted T-Stub Connections under Shear and Compression
- Author
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Gangnian Xu, Youzhi Wang, Yefeng Du, Wenshuai Zhao, and Laiyong Wang
- Subjects
T-stub connection ,high-strength bolted (HSB) connection ,shear and compression ,initial friction load ,ultimate strength ,finite element method (FEM) ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The friction-type high-strength bolted (FHSB) T-stub connection has been widely used in steel structures, due to their good fatigue resistance and ease of installation. While the current studies on FHSB T-stub connections mainly focus on the structural behaviors under both shear and tensile force, no research has been reported on the mechanical responses of the connections under the combined effects of shear and compression. To make up for this gap, this paper presents a novel FHSB T-stub connection, which is simple in structure, definite in load condition, and easy to construct. Static load tests were carried out on 21 specimens under different shear–compression ratios, and the finite-element (FE) models were created for each specimen. The failure modes, initial friction loads and ultimate strengths of the specimens were compared in details. Then, 144 FE models were adopted to analyze the effects of the friction coefficient, shear–compression ratio, bolt diameter and clamping force on the initial friction load and ultimate strength. The results showed that the FHSB T-stub connection under shear and compression mainly suffers from bolt shearing failure. The load–displacement curve generally covers the elastic, yield, hardening and failure stage. If the shear–compression ratio is small and the friction coefficient is large, its curve only contains the elastic and failure stage. The friction coefficient and shear–compression ratio have great impacts on the initial friction load and ultimate strength. For every 1 mm increase in bolt diameter, the initial friction load increased by about 10%, while the ultimate strength increased by about 8.5%. For each 10% increase/decrease of the design clamping force, the initial friction load decreases/increases by 7.8%, while the ultimate load remains basically the same. The proposed formula of shear capacity and self-lock angles of FHSB T-stub connection can be applied to the design of CSS-enhanced prestressed concrete continuous box girder bridges (PSC-CBGBs) and diagonal bracing.
- Published
- 2020
- Full Text
- View/download PDF
38. Synthesis of Benzimidazo[2,1
- Author
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Pengbo, Zhao, Youzhi, Wang, Xiajun, Wang, Daijiao, Zhuang, and Rulong, Yan
- Subjects
Isoquinolines ,Methylation ,Catalysis ,Copper - Abstract
A one-pot method for the synthesis of silylsubstituted/methylsubstituted indolo[2,1
- Published
- 2022
39. Ordovician carbonate rock matrix fractured-porous reservoirs in Tahe Oilfield, Tarim Basin, NW China
- Author
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Cui MAO, Jianhua ZHONG, Yong LI, Youzhi WANG, Yongbin NIU, Liangtian NI, and Zhufu SHAO
- Subjects
Petroleum refining. Petroleum products ,TP690-692.5 - Abstract
Features of porphyritic limestone matrix fracture-vug reservoirs in Tahe Oilfield, Tarim Basin, NW China was examined by core observation, thin section identification, cathodoluminescence, microscopic fluorescence, scanning electron microscope and energy spectrum analysis. Thick and widespread in the Lower-Middle Ordovician Yijianfang and Yingshan Formations, sand-clastic masses in the porphyritic limestone are rich in oil, quite a proportion of oil and gas produced currently is from their matrix rather than completely from the fracture cave system in the past understanding. In irregular spot or ribbon shape on cores, dolomitic sand-clastic masses usually account for about 40% of the total surface of core in many layers, arenite section has a surface porosity of around 39%. The arenite section is well-crystallized dolomite, the dolomite crystals are mainly 100−350 μm in diameter, equivalent to medium-fine sand; high-pressure mercury injection experiment results show that the reservoir physical property of sand-clastic masses is much better than that of micrite limestone, with a porosity of 12.57%−36.39%. There developed abundant stylolites and microcracks around the sand-clastic masses, which connect the oil bearing units of dolomitc sand-clastic masses, making micropores and microcracks communicate and become effective reservoir space. Key words: carbonate rock, matrix fractured-porous reservoir, porphyritic limestone, sand-clastic micrite, Tahe Oilfield, Ordovican
- Published
- 2014
- Full Text
- View/download PDF
40. A big-data-based recurrent neural network method for forest energy estimation
- Author
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Yang Song and Youzhi Wang
- Subjects
Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology - Published
- 2023
41. Drought disaster risk management based on optimal allocation of water resources
- Author
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Fan Zhang, Qian Tan, Xiao Liu, Yan Huang, Ping Guo, and Youzhi Wang
- Subjects
Atmospheric Science ,Food security ,Resource (biology) ,Emergency management ,business.industry ,Vulnerability ,Water resources ,Natural hazard ,Earth and Planetary Sciences (miscellaneous) ,Environmental science ,Risk assessment ,Water resource management ,business ,Risk management ,Water Science and Technology - Abstract
Drought risk management has gradually emerged as an important discipline and the traditional negative drought management changes to active drought management. Drought risk assessment and control are the core of drought risk management. In this study, based on precipitation anomaly (Pa) and soil moisture content anomaly index, the stochastic drought index model was established to calculate the drought distribution under different probability. Considering risk of disaster (H), vulnerability of the environment (S), exposure of the disaster bearing body (V), and disaster prevention and mitigation capability (C), a water resource optimization allocation model based on drought disaster risk assessment model was established to minimize the regional drought disaster risk. The developed models were used in Heilongjiang Province, China, and the results showed that: (1) the drought indexes based on the stochastic method can reflect the regional drought under different probabilities, providing managers with comprehensive drought information to manage the disaster; (2) the optimal allocation of water resources can reduce the risk of drought disaster in drought-prone months and drought-prone areas; and (3) studying drought risk assessment and regulation considering grain yield can be used to effectively understand and alleviate drought effects in the study area, reduce farmers' economic losses and ensure local food security.
- Published
- 2021
42. Vine copula and cloud model-based programming approach for agricultural water allocation under uncertainty
- Author
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Shanshan Guo, Baoying Shan, Hao Li, Ping Guo, and Youzhi Wang
- Subjects
Environmental Engineering ,010504 meteorology & atmospheric sciences ,0208 environmental biotechnology ,Copula (linguistics) ,02 engineering and technology ,01 natural sciences ,020801 environmental engineering ,Vine copula ,Transformation (function) ,Evapotranspiration ,Farm water ,Range (statistics) ,Environmental Chemistry ,Applied mathematics ,Safety, Risk, Reliability and Quality ,Surface runoff ,Random variable ,0105 earth and related environmental sciences ,General Environmental Science ,Water Science and Technology ,Mathematics - Abstract
In the existing agricultural water management models under uncertainty, the mutual-correlation and their self-correlation of random variables (like precipitation (P), runoff (R), reference evapotranspiration (ET0), etc.) are often ignored. When expressing the fuzziness of socio-economic factors, fuzzy membership function is usually determined by the experience of decision-makers, which often brings some confusions. To solve the above questions, first, C-vine copula is introduced in this study to depict the multiple interdependence structures. Two kinds of three-dimensional copulas is constructed: $${CV}_{1}({R}_{t}, {P}_{t}, {R}_{t-1})$$ and $${CV}_{2}({ET}_{0t}, {P}_{t}, {ET}_{0(t-1)})$$ , where t is at t-th month. Second, the cloud model, as a novel qualitative and quantitative transformation model, is chosen to describe the uncertainty of crop prices. Combining these two uncertainty-expressing methods, an agricultural water resources optimization model is built to gain maximum net benefit by allocating limited surface water and groundwater. Then this model was applied to a case study in northwestern China. Results show that the developed model could provide the decision-makers with not only the best or the optimum range of system net benefits but also the probability of obtaining a given benefit under complex uncertainties. For comparison, the ordinary models without consideration of dependence of variables as an independent were also built. When overlooking the mutual-correlation and self-correlation, the optimal water allocation and system net benefits would be higher in dry years with total water allocation higher by 4.5%. This unreasonable allocation results may cause excessive agricultural irrigation to squeeze water for other industries in dry years, which would exacerbate water shortages. The discussion and comparison results prove the necessity and effectiveness of this research.
- Published
- 2021
43. Impacts of droughts on agricultural and ecological systems based on integrated model in shallow groundwater area
- Author
-
Xiaoxing Zhang, Ping Guo, Youzhi Wang, and Shanshan Guo
- Subjects
Crops, Agricultural ,Soil ,Environmental Engineering ,Climate Change ,Environmental Chemistry ,Water ,Agriculture ,Pollution ,Waste Management and Disposal ,Groundwater ,Ecosystem ,Droughts - Abstract
Agricultural and ecological developments are increasingly paid attention in light of climate change. It is expected to comprehensively macroscopically control agricultural and ecological developments in shallow groundwater area that ecology is closely related to agricultural development. This study synthesizes multi models, including process-based crop growth model, water status model of shelterbelt, and vegetation-soil-groundwater interactions to identify responses of crops, shelterbelt, and natural vegetation to different level droughts. Obtained results show that the rank of vulnerabilities to droughts is: maize (the most vulnerable crop)wheatsunflowershelterbelt (the least vulnerable vegetation). Under three drought scenarios, the natural vegetation biomass is all in stable states that fluctuations of groundwater salinity and precipitation cannot largely change the natural vegetation biomass. The natural vegetation biomass in equilibrium states is decreased by 4.08 % and 9.19 % respectively when available irrigation water is reduced to 70 % and 50 % levels. The results indicate that controlling and decreasing initial soil salt content before crop growth may be an effective way to avoid the decrease in the yield loss caused by salinization. It is suggested that vulnerable crops and the possible evolution of natural vegetation towards degradation in extreme droughts should be concerned and taken certain measures. This study also implies that optimizing planting structure is a possible strategy to improve adaptabilities to droughts and decrease economic losses. The established model contributes to provide an effective approach to handle large-scale decision-making problems about comprehensively developing agriculture and ecology in changing environments. Obtained results can provide reference strategies for managers to achieve sustainable development.
- Published
- 2022
44. Nano/Micro Pore Structure and Fractal Characteristics of Baliancheng Coalfield in Hunchun Basin
- Author
-
Youzhi Wang and Cui Mao
- Subjects
Langmuir ,Materials science ,business.industry ,020209 energy ,Biomedical Engineering ,Bioengineering ,02 engineering and technology ,General Chemistry ,Condensed Matter Physics ,Fractal dimension ,Fractal ,Adsorption ,020401 chemical engineering ,Chemical engineering ,Specific surface area ,0202 electrical engineering, electronic engineering, information engineering ,General Materials Science ,Coal ,0204 chemical engineering ,Porosity ,business ,Dissolution - Abstract
The pore structure characteristic is an important index to measure and evaluate the storage capacity and fracturing coal reservoir. The coal of Baliancheng coalfield in Hunchun Basin was selected for experiments including low temperature nitrogen adsorption method, Argon Ion milling Scanning Electron Microscopy (Ar-SEM), Nuclear Magnetic Resonance (NMR), X-ray diffraction method, quantitative mineral clay analysis method. The pore structure of coal was quantitatively characterized by means of fractal theory. Meanwhile, the influences of pores fractal dimension were discussed with experiment data. The results show that the organic pores in Baliancheng coalfield are mainly plant tissue pores, interparticle pores and gas pores, and the mineral pores are corrosion pores and clay mineral pores. There are mainly slit pore and wedge-shaped pore in curve I of Low temperature nitrogen adsorption. There are ink pores in curve II with characteristics of a large specific surface area and average pore diameter. The two peaks of NMR T2 spectrum indicate that the adsorption pores are relatively developed and their connectivity is poor. The three peaks show the seepage pores and cracks well developed, which are beneficial to improve the porosity and permeability of coal reservoir. When the pore diameter is 2–100 nm, the fractal dimensions D1 and D2 obtained by nitrogen adsorption experiment. there are positive correlations between water content and specific surface area and surface fractal dimension D1, The fractal dimension D2 was positively and negatively correlated with ash content and average pore diameters respectively. The fractal dimensions DN1 and DN2 were obtained by using the NMR in the range of 0.1 μm˜10 μm. DN1 are positively correlated with specific surface area of adsorption pores. DN2 are positively correlated volume of seepage pores. The fractal dimension DM and dissolution hole fractal dimension Dc were calculated by SEM image method, respectively controlled by clay mineral and feldspar content. There is a remarkable positive correlation between D1 and DN1 and Langmuir volume of coal, so fractal dimension can effectively quantify the adsorption capacity of coal.
- Published
- 2021
45. A fuzzy dependent-chance interval multi-objective stochastic expected value programming approach for irrigation water resources management under uncertainty
- Author
-
Liu Liu, Youzhi Wang, Zhong Li, and Ping Guo
- Subjects
Mathematical optimization ,Interval (mathematics) ,Expected value ,Irrigation water ,Fuzzy logic ,Mathematics - Published
- 2021
46. Pore throat characteristics of tight reservoirs by a combined mercury method: A case study of the member 2 of Xujiahe Formation in Yingshan gasfield, North Sichuan Basin
- Author
-
Junhu Ren, Xiandong Wang, Simiao Zhu, Cui Mao, Ying Wang, Yanping Zhu, Qiang Li, Zhiguo Wang, Jiayin He, Haiyan Wang, Baode Tan, Jiagang Shen, Youzhi Wang, and Wei Jin
- Subjects
QE1-996.5 ,tight sandstone ,Sichuan basin ,Geochemistry ,chemistry.chemical_element ,Geology ,Environmental Science (miscellaneous) ,pore throat structure ,storage space ,Mercury (element) ,medicine.anatomical_structure ,yingshan oilfield ,chemistry ,Throat ,otorhinolaryngologic diseases ,medicine ,General Earth and Planetary Sciences ,pore throat - Abstract
The complex pore throat characteristics are significant factors that control the properties of tight sandstone reservoirs. Due to the strong heterogeneity of the pore structure in tight reservoirs, it is difficult to characterize the pore structure by single methods. To determine the pore throat, core, casting thin sections, micrographs from scanning electron microscopy, rate-controlled mercury injection, and high-pressure mercury injection were performed in member 2 of Xujiahe Formation of Yingshan gasfield, Sichuan, China. The pore throat characteristics were quantitatively characterized, and the distribution of pore throat at different scales and its controlling effect on reservoir physical properties were discussed. The results show that there are mainly residual intergranular pores, intergranular dissolved pores, ingranular dissolved pores, intergranular pores, and micro-fractures in the second member of the Xujiahe Formation tight sandstone reservoir. The distribution range of pore throat is 0.018–10 μm, and the radius of pore throat is less than 1 μm. The ranges of pore radius were between 100 and 200 μm, the peak value ranges from 160 to 180 μm, and the pore throat radius ranges from 0.1 to 0.6 μm. With the increase of permeability, the distribution range of throat radius becomes wider, and the single peak throat radius becomes larger, showing the characteristic of right skew. The large throat of the sandy conglomerate reservoir has an obvious control effect on permeability, but little influence on porosity. The contribution rate of nano-sized pore throat to permeability is small, ranging from 3.29 to 34.67%. The contribution rate of porosity was 48.86–94.28%. Therefore, pore throat characteristics are used to select high-quality reservoirs, which can guide oil and gas exploration and development of tight sandstone reservoirs.
- Published
- 2021
47. Cathepsin K regulates the tumor growth and metastasis by IL-17/CTSK/EMT axis and mediates M2 macrophage polarization in castration-resistant prostate cancer
- Author
-
Ning Wu, YouZhi Wang, KeKe Wang, BoQiang Zhong, YiHao Liao, JiaMing Liang, and Ning Jiang
- Subjects
Male ,Cancer Research ,Cellular and Molecular Neuroscience ,Prostatic Neoplasms, Castration-Resistant ,Cell Line, Tumor ,Macrophages ,Immunology ,Cathepsin K ,Interleukin-17 ,Humans ,Cell Biology - Abstract
A common stage of advanced prostate cancer is castration-resistant prostate cancer (CRPC), greater understanding of which is required in order to address and solve the clinically difficult challenge. Cathepsin K (CTSK) is a cysteine protease that usually has a strong activity of degrading extracellular matrix and is related to osteoclast-mediated bone destruction. However, the mechanism of CTSK-regulation in CRPC is still unclear to us. The current study aimed to analyze the expression of differentially expressed genes (DEGs) in patient samples (from localized PC and CRPC). Interestingly, we found that CTSK to be significantly up-regulated in CRPC. Through further signal pathway enrichment analysis, we found that the IL-17 signaling pathway to be highly correlated with CTSK. The oncogenic functions of CTSK and IL-17 in CRPC were proven by a series of in vivo and in vitro experiments. Possible downstream molecules of CTSK were investigated, which could serve as control elements to regulate the expression of EMT, thereby facilitating the metastasis and excessive proliferation of PC cells. Expression of CTSK was related to high concentration of M2 tumor-associated macrophages (TAMs) M2 in CRPC. A CTSK-mediated feedback circuit between TAMs and CRPC tissues was indicated in the process of transfer, proving the possibility of CTSK could be use as an available therapeutic target for CRPC.
- Published
- 2021
48. Detecting the Thermal Properties of Bone Cement by Temperature Sensor
- Author
-
Youzhi Wang, Yongzhi Xu, and Fuxia Wang
- Subjects
PMMA ,Thermal properties ,Thermocouple ,CNTs. ,Technology (General) ,T1-995 - Abstract
Polymethylmethacrylate-based (PMMA) bone cements containing functionalized carbon nanotubes (CNTs) were prepared, and the thermal properties of the resultant nanocomposite cements were characterized in accordance with the international standard for acrylic resin cements. The aim of this study was to determine the peak temperatures during the polymerization reaction in PMMA bone cement by thermocouple (temperature sensor). The CNTs were uniformly dispersed in the cement matrix. The setting time of the cement increased and the maximum temperature during exothermic polymerization reaction was effectively reduced by the incorporation of functionalized CNTs. This reduction decreased thermal necrosis of the respective nanocomposite cements, which probably could reduce the hyperthermia experienced in vivo.
- Published
- 2013
49. An Efficient Functionalization Method for the Multiwalled Carbon Nanotubes and Their Applications in PMMA Bone Cement
- Author
-
Yongzhi Xu, Youzhi Wang, and Lei Cui
- Subjects
MWCNTs ,PMMA ,Bone cement ,Mechanical properties ,Technology (General) ,T1-995 - Abstract
In this work, an efficient procedure for the functionalization of multiwalled carbon nanotube (MWCNTs) based on nitric acid oxidation was presented. The morphologies of MWCNTs oxidized under various conditions were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The FTIR provided clear evidence for the presence of carboxylic groups (–COOH) attached to the surface of MWCNTs resulting from the acid treatment. The unfunctionalised MWCNTs(p-MWCNTs) and carboxy1 functionalized MWCNTs (f-MWCNTs) were successfully applied into the Polymethyl methacrylate (PMMA) bone cement. The resultant mechanical experiment indicated that the f-MWCNTs were a promising additive to improve the compressive strength and bend strength of the PMMA bone cement. The morphology and degree of dispersion of the MWCNTs in the PMMA matrix at different scales were analyzed by SEM. Improvements in mechanical properties were attributed to the MWCNTs arresting or retarding crack propagation through the cement by providing a bridging effect into the crack, normal to the direction of crack growth.
- Published
- 2013
50. Using Displacement Sensor to Determinate the Fracture Toughness of PMMA Bone Cement
- Author
-
Yongzhi Xu, Youzhi Wang, and Guozhi Tian
- Subjects
Strain transducer ,Fracture toughness ,Mechanical properties ,Chevron-notched ,Technology (General) ,T1-995 - Abstract
Polymethylmethacrylate-based (PMMA) bone cements incorporating multiwalled carbon nanotubes (MWCNTs) as a means of reinforcement were prepared, and their structure and properties were investigated by displacement sensor and chevron-notched test method. The aim of this study was to determine the transverse-direction fracture toughness (KIv) in PMMA bone cement by using the displacement sensor. Three major advantages of the displacement sensor test method are: (1) It is easier to achieve the plane strain requirements; (2) Not required to make the fatigue-precracking; (3) It is considerable easy to produce stable crack propagation before completely fracture. The fracture toughness values of PMMA bone cement and PMMA/MWNCTs bone cement were measured to be 1.235±0.15 MPa m1/2 and 1.725±0.15 MPa m1/2, respectively. Based on the microstructures shown in SEM images, the improved fracture toughness of PMMA bone cement was contributed to the incorporation of surface functionalized MWCNTs.
- Published
- 2013
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