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Gesture recognition is an effective method to voice-off communication in daily life, offering an intuitive and immersive means to interactive terminal. Current commercialized solutions to gesture recognition are exposed to limitations of either susceptibility to environmental conditions or the huge cost on fabrication, energy, and computing power. Here, we propose a deep-learning-enabled smart gesture recognition glove system that can capture and recognize the hand gesture in real time and execute the users' interactive instructions for multifunctional rescue tasks. The self-powered gesture recognition glove system can successfully classify 7 typical gestures with an accuracy as high as 98.57%. As a proof of concept, a rescue vehicle equipped with water pump, dexterous robotic arm, or laser radar is demonstrated to be guided by gestures outside the environment to complete rescue tasks even in environments that are inaccessible to humans. We aim to use the self-powered gesture recognition glove for future intelligent interaction and intelligent manufacturing, especially in the diversified scenarios that require more advanced and dexterous manipulations in the dark or blocked spaces. [Display omitted] • We propose a deep-learning-enabled smart gesture recognition glove system. • It can recognize the hand gesture and execute multifunctional rescue tasks. • The self-powered system can successfully classify 7 typical gestures with an accuracy of 98.57%. [ABSTRACT FROM AUTHOR]

Abstract Purpose To screen novel candidate biomarkers in primary colorectal cancer (CRC), and indentify their clinical valuation in progress of colorectal cancer. Methods By using antibody microarray, 274 target proteins in tissue samples from primary colorectal cancer patients were detected. Among differently expressed proteins in CRC tissues, As promising candidate biomarker, RANTES/CCL5 was validated by enzyme-linked immunosorbentassay and immunohistochemistry (IHC), and the clinical significance of CCL5 was analyzed. Results Totally, 25 differentially expressed proteins were indentified between colorectal cancers and matched normal mucosa. CCL5 expression was significantly associated with adverse pathological progress, apt to lymph node metastasis and higher T stage. Conclusions CCL5 may contribute to promoting tumor growth, and CCL5 is a promising target that may help in understanding the pathogenesis of CRC. [ABSTRACT FROM AUTHOR]

Studies have shown that bullying victimization may be related to internalizing and externalizing problems; however, the mechanism underlying this relationship remains unknown. This study explored the mediating role of sleep disturbance and the moderating role of parental attachment. A total of 1543 Chinese primary school students (M age = 8.92 years, SD1.7 years; range, 6–12) completed bullying victimization, sleep disturbance, and parental attachment measures, and provided information on their parents' occupations. The parents or guardians (n = 1995) also completed ratings on their children's internalizing and externalizing problems. It was found that bullying victimization directly affected internalizing and externalizing problems and also influenced sleep disturbance. Regardless of the parent's socioeconomic status, parental attachment was found to moderate the relationship between bullying victimization and internalizing problems. These findings contribute to understanding the partial mediating mechanism of sleep disturbance in the association between bullying victimization and internalizing and externalizing problems. The protective role of parental attachment proved central to preventing internalizing problems in bullied children. Intervention programs that enhance parental attachment and improve sleep quality could assist in mitigating the impact of bullying victimization on internalizing or externalizing problems. • Being bullied causes psychological and behavioral problems. • Sleep is a mediator for bullying and psychological/behavioral problems. • Parental attachment moderated the bullied path for psychological problems. • Improved sleep quality and attachment may alleviate effects on bullied children. [ABSTRACT FROM AUTHOR]

The purpose of this study was to describe symptom clusters (SCs), and symptom experiences in early postoperative patients with pancreatic cancer who are recovering at home. From October 2021 and April 2022,15 patients following pancreatic cancer surgery were recruited from a tertiary hospital in Jiangsu Province by maximum variation sampling. Semi-structured interviews were performed to collect data and thematic analysis was conducted to analyze the data. Three themes were extracted from the data. The first theme "difference in symptom perception and cognition" illustrated factors such as patient knowledge, expected recovery status, and risk perception could influence patient symptom experience. Most patients actually reported fewer and less severe symptoms than previous studies. The second theme "the results of symptom cluster" demonstrated anorexia-distress SC, bowel–digestive related SC and sleep disturbance related SC, and anorexia-distress SC should be considered as the priority SC given its multidimensional significance for patients. The last theme described the patient's positive attitudes, behaviours and barriers to coping with symptoms, namely "symptom self-management experience". There are differences in the perception and interpretation of SCs in postoperative pancreatic cancer patients. Understanding the meaning of individual differences in the experience of symptoms can assist patients in the management of SCs. Medical staff should combine patient self-management strategies and evidence-based data to provide appropriate support at different stages to improve patient symptom management and quality of life. • This study analyses patients' experiences and understanding of symptom clusters in order to facilitate the development of a model for the management of patients' symptoms in the early post-surgical period at home setting. • This study identifies multiple psychosocial factors that can explain individual differences in symptom experience. • This study identifies three main symptom clusters and their priorities in patients with early postoperative pancreatic cancer, and uncovers the mechanisms of symptom cluster formation based on personal experience. [ABSTRACT FROM AUTHOR]

Abstract: Co1−xLaxOy catalysts were synthesized by citric acid complex method and their catalytic activities for soot combustion in air were investigated in this study. The best performance was observed over Co0.93La0.07 oxide catalysts with T50 =402°C. Co4+ in the surface of LaCoO3 leads to the formation of more oxygen vacancies, thus contributing to the activities. [Copyright &y& Elsevier]

Abstract: Multilayered carbon nanotubes/silicon dioxide (CNTs/SiO2) electromagnetic wave absorbing ceramic matrix composite material was fabricated by hot-pressed sintering. The gradient layer structure was designed to improve its absorbing properties. The multilayered CNTs/SiO2 composite was shaped by adding five kinds of mixed powders with different CNTs contents (0wt%, 2.5wt%, 5wt%, 7.5wt% and 10wt%) to the graphite die in turn, and its average CNTs content was 5wt%. Meanwhile, a single layered composite with the same content of CNTs (5wt%) was fabricated as a contrast sample. The electromagnetic interference (EMI) shielding effectiveness (SE) and reflecting effectiveness (RE) were studied with insertion loss (IL) and return loss (RL) measurements in the range of 8–12GHz. The results showed that the gradient multilayered sample had a better absorbing effectiveness and its absorbance was 1.5 times as high as the single layered sample’s, while their SEs were almost the same. [Copyright &y& Elsevier]

Abstract: A series of TiO2 supported catalysts with 0.5wt% noble metal (Pt, Pd, Rh and Ru) were used for the low-temperature selective catalytic reduction (SCR) of NO with propylene in the presence of excess oxygen. Under an atmosphere of 150ppm NO, 150ppm C3H6 and 18vol% O2 (GHSV 72,000h−1), the Pt/TiO2 was found to be the most active catalyst giving a complete C3H6 conversion and 63% NO x reduction simultaneously at 140°C. The enhanced activity of Pt/TiO2 may be associated to its outstanding activities in the temperature-programmed oxidation (TPO) of NO to NO2 and C3H6 to CO2. [Copyright &y& Elsevier]

Abstract: Nitrogen (N)-doped TiO2 samples with high specific surface areas were directly prepared by heating the mixture of urea and TiO2, where the TiO2 was obtained with titanium tetrachloride as precursor. The absorption spectrum of the N-doped TiO2 shifted to wavelength up to 600nm with increasing urea contents. X-ray photoelectron spectroscopic measurements showed that the N presented in TiO2 was in the state of both molecularly chemisorbed N2 and substituted N. While both of them contribute to the response to visible light, the latter gave the prepared samples with hydrogen evolution under visible light. The apparent photocatalytic activity of water splitting demonstrated as high amount of H2 evolution was partly due to the phase transformation from anatase to rutile for the N-doped TiO2. [Copyright &y& Elsevier]

Analyzes the concentration and flux transportation of bioaerosol in Nanjign, China. Cycle of the solar radiation and atmospheric turbulent intensity; Factors affecting the bioaerosol concentration; Use of Bowen ration method.

[Display omitted] • Particle agglomerate behavior under electric field is quantitatively analyzed. • Agglomerate' 3D twist visualization was realized under flow-electric field. • Action mechanism of dipole moment on particle agglomerate was further developed. The research developed a new mechanism for particle agglomeration growth and fracture in the flow-electric coupling field. Microscopic visualization experiments reveal an optimum voltage range for controlling agglomerate growth dynamics. Additionally, we observed, for the first time, twisting behaviors of particle agglomerates during the growth and fracture process under the influence of the flow-electric field. A correlation between twist and fracture, varying with the increase in applied voltage, was identified. Moreover, we identified two distinct agglomeration modes: dendritic and chain agglomerates, each exhibiting unique growth characteristics. We discovered that the growth, twisting, and fracture of inclined dendritic agglomerates are influenced by two components of the electric dipole moment: the axial (P g) and radial (P t) components, with the aid of numerical simulation. Chain-like agglomerates exhibit growth followed by fracture. Our findings offer insights into the controlled growth of submicron particle agglomerates in gas phases using electric fields. [ABSTRACT FROM AUTHOR]

The influence of iron and tungsten in the Mn/Ti catalyst system on the activity and H 2 O induced deactivation was evaluated for the Selective Catalytic Reduction (SCR) of NO. The properties of the catalysts were characterized by physicochemical measurements, including BET surface area, X-ray diffraction (XRD), H 2 temperature-programmed reduction (H 2 -TPR), NH 3 temperature-programmed desorption (NH 3 -TPD), NO oxidation, X-ray photoelectron spectroscopy (XPS) and in situ diffuse reflectance infrared spectroscopy (DRIFT) analyses. The results indicated that the addition of iron promoted surface species dispersion and increased valence state of manganese species, which enhanced the low-temperature activity. The addition of tungsten enhanced the acid sites and improved the thermal stability of the acid sites. Thus, the Mn10Fe10/W3Ti exhibited excellent NO x conversion and N 2 selectivity during high temperature compared with Mn10/Ti and Mn10Fe10/Ti catalysts. Furthermore, the addition of tungsten exhibited excellent resistance to H 2 O induced deactivation. Accordingly, the co-addition of iron and tungsten with proper ratios to Mn/Ti resulted in excellent NO x conversion, N 2 selectivity and H 2 O resistance. [ABSTRACT FROM AUTHOR]

In this paper, six kinds of two-stage ESPs with various ratios of charger and collector units are designed to research the capture enhancement mechanism of submicron particles. The working conditions are optimized by studying the influence of gas velocity, charger current, and electric field strength of collector. Results show that the electrostatic field characteristics of the two-stage ESP with Ra = 1/6 is beneficial to improve the collection efficiency while slightly less stable. The indicator factor of particle charging enhancement effect of two-stage ESP with Ra = 6/1 fluctuates between 0.06 and 0.1, which suggests that the two-stage ESP with a higher proportion of charger units cannot achieve the satisfying performance for the limitation of ionic wind effect. Under comprehensive consideration of ionic wind effect and ozone emission, the two-stage ESP with Ra = 2/5 is selected at the first priority by exerting the advantages of fully particle charging and enough collection space, which has a strong potential in both particle charging enhancement and electric field enhancement. However, for improving the collection efficiency of submicron particle with a size ranging from 0.2 to 0.5 µm which suffers from both of weak particle charging and agglomeration effect, the two-stage ESP with Ra = 4/3 is not recommended. [Display omitted] • Submicron particles with the lowest collection efficiency are selected as target. • Capture enhancement mechanism is investigated by designing two-stage ESPs. • Working conditions are optimized by studying the effect of operating parameters. • The electrostatic capture equipment with appropriate unit proportion is selected. [ABSTRACT FROM AUTHOR]

In this work, a spike-tubular electrostatic device was developed for effectively removing particulate matter (PM) and VOCs, based on multi-stage electric field enhancement and expanded arc interface ratio of corona discharge. In the experiment, it was equipped with a portable 12 V D.C. power supply module and a fan module; PM from moxa smoke, mainly composed of submicron particles with a high penetrate rate, and HCHO were employed to test its electrostatic precipitation and oxidation ability, respectively. Additionally, CFD numerical simulation was adopted to investigate the characteristics of the electric field, the flow field, and the ozone generation. Experimental results showed that the electrostatic device could remove 99% of the fine particles at 2 m/s. Meanwhile, it could also remove HCHO of 2.14 × 103-1.07 × 104 μg/m3 concentration with 100% efficiency. By comparison, its oxidation capacity could be about 80 times that of ozone oxidation, revealing the enhanced oxidation ability of other short-living reactive species. Simulation results proved that the promising purification performance resulted from the locally enhanced electric field strength, up to 2 × 107 V/m in the central region, and sufficient contact between pollutants and the corona discharge region. Finally, as verified by the airtight chamber cycle experiment and case comparison, the device owns feasible purification ability and promising energy yield (0.79 g/kWh) in the application. Moreover, prospects and strategies for the device's practical application in air purification and disinfection were proposed, which may provide helpful enlightenment for air purification. [ABSTRACT FROM AUTHOR]

Abstract: M-ZSM-5 (M=Zn, Cu, Mn) catalysts were prepared by ion-exchange of M ions with H+ in H-ZSM-5. TiO2 loading on M-ZSM-5 was realized by dipping method. All the catalysts were characterized by ultraviolet and visible spectroscopy (UV–vis), X-ray diffraction (XRD) and nitrogen isothermal adsorb-desorption measurement. The catalytic activities of the samples were investigated under UV, ozone and UV–ozone for acetaldehyde degradation. The results showed that the application of photocatalytic ozonation (UV–ozone) produced the improved efficiency for acetaldehyde removal, indicating a combined effect occurred when photocatalysis and ozonation were carried out simultaneously. Transition metal ions exchanged catalyst TiO2/M-ZSM-5 increase the apparent catalysis activity by increasing acetaldehyde adsorption and ozonation at the sites of M ions. TiO2/Mn-ZSM-5 presented the highest activity with acetaldehyde conversion among the prepared samples, which was higher than that of simple additive under UV and O3. The improvement was attributed to the exchanged Mn ions and the integrated effect among adsorption, ozonation and photocatalytic reactions. [Copyright &y& Elsevier]

Abstract: TiO2 photocatalysts coated on foam nickel were prepared by sol–gel method. Al2O3–SiO2 films introducing as transition interlayer between TiO2 and nickel metal foam were used to promote the photocatalytic activity of TiO2. The results show that TiO2/Al2O3–SiO2 composite films have much higher photocatalytic activity and stability for degradation of gaseous acetaldehyde than TiO2 films. The significant enhancement effect arises from the large specific surface area of Al2O3–SiO2, which provides more active sites for subsequent TiO2 loading and photocatalytic reaction. The Al2O3–SiO2 interlayer also inhibits the transfer of photo-generated electron from TiO2 to Ni metal and improves the photocatalytic activity of photocatalysts. Furthermore, Pt loading on TiO2 by photo-deposition was carried out to improve photocatalytic efficiency. The acetaldehyde degradation rate on Pt-loaded TiO2 photocatalyst is more than three times than that of TiO2 without Pt loading. The optimum Pt concentration is 0.3wt%. XRD, UV–vis and SEM were used to characterize the structural, physical and chemical features of all the samples and to reveal the mechanism of the improvement of the photocatalytic activity. The effects of photocatalyst preparation parameters along with their photocatalytic behavior in deactivation and reactivation are also presented in the present study. [Copyright &y& Elsevier]

Anatase TiO2 films were obtained on glass substrates using a sol–gel method using titanium isopropoxide as a precursor. The thickness of the film was about 140 nm for one coating, and the thickness is controlled by the number of coating cycles. The spectra of UV-VIS absorption indicated that the absorption edge of the TiO2 films is ca. 385 nm, corresponding to the band gap energy of 3.20 eV. We obtained TiO2 films having a high activity for the hydrogen evolution from photocatalytic water cleavage. By loading with 0.3 wt% Pt rate of hydrogen production increases. No influence of film thickness and calcination temperature on the photocatalytic property is observed. [Copyright &y& Elsevier]

[Display omitted] • Operando observation system is constructed to make in situ test on lab-on-a-chip. • Image processing method is developed based on automatic object detection. • It is first-time visualization of dynamic deposition process of submicron particle. • The growth site and direction of particle chain are investigated systematically. • This work confirms the effect of drag force on ultimate height of particle chain. Submicron particle is a harmful air pollutant due to size effect, gathering characteristic and biological activity, which not only causes a serious threat to human health and public sanitary security, but also is difficult to capture with lowest removal efficiency. Here, Operando investigation system is constructed to explore deposition characteristics of submicron particles in electric-flow coupled fields through combining microfluidic technology for forming micro electric field on the lab-on-a-chip with micro-visualization technology for capturing dynamic deposition process. Besides, based on object detection and deep learning, an image processing method is developed which can realize automatic object detection and rapid extraction of required information. Results show that particle chain grows preferentially from the convex position to prove the influence of electrode surface roughness on the growth site. The global electric field has a positive effect on keeping particle chain growing up at upright direction, and the growth process of particle chain is proposed: forming growth site stage, grow fast stage and fluctuation stage. Particle velocity in the airflow direction presents a decrease trend during the process particle migrates towards to electrode surface, which proves the direct influence of boundary layer effect on the ultimate height of particle chain. [ABSTRACT FROM AUTHOR]

Various manganese oxides (MnO x) prepared via citric acid solution combustion synthesis were applied for catalytic oxidation of benzene. The results showed the ratios of citric acid/manganese nitrate in synthesizing process positively affected the physicochemical properties of MnO x , e.g., BET (Brunauer-Emmett-Teller) surface area, porous structure, reducibility and so on, which were in close relationship with their catalytic performance. Of all the catalysts, the sample prepared at a citric acid/manganese nitrate ratio of 2:1 (C2M1) displayed the best catalytic activity with T 90 (the temperature when 90% of benzene was catalytically oxidized) of 212℃. Further investigation showed that C2M1 was Mn 2 O 3 with abundant nano-pores, the largest surface area and the proper ratio of surface Mn4+/Mn3+, resulting in preferable low-temperature reducibility and abundant surface active adsorbed oxygen species. The analysis results of the in-situ Fourier transform infrared spectroscopy (in-situ FTIR) revealed that the benzene was successively oxidized to phenolate, o -benzoquinone, small molecules (such as maleates, acetates, and vinyl), and finally transformed to CO 2 and H 2 O. Image, graphical abstract [ABSTRACT FROM AUTHOR]

• Ni2+ substituted spinel Ni x Co 3-x O 4 was synthesized for low-temperature removal of formaldehyde. • Ni 0.8 Co 2.2 O 4 was found to be the best low-temperature catalytic activity with T100 of 90 °C and 100% CO 2 selectivity. • Ni2+ substitution enriched surface hydroxyl over catalyst surface. • The active oxidant Co3+ and abundant hydroxyl were concluded to dominate the low-temperature activity of Ni x Co 3-x catalysts. Spinel Co 3 O 4 catalysts were modified by A2+ (A = Mg, Ni, Zn) and B3+ (B = Cr, Fe, Al) metal cation substitution respectively for low-temperature removal of formaldehyde. Among of those A2+ substituted catalysts, Ni 0.8 Co 2.2 O 4 was found to be the best low-temperature catalytic activity with T100 of 90 °C and 100% CO 2 selectivity. However, B3+ substitution was found negative to improve the low-temperature catalytic performance for relatively weaker oxidation capacity of Cr3+, Fe3+ and Al3+. Results of XRD and Raman characterization confirmed that both A2+ or B3+ cations substitution caused structural and surface electronic variation, and NiCo 2 O 4 had been successfully synthesized. XPS analysis revealed that surface hydroxyl coming from Ni(OH) 2 was enriched by Ni2+ substitution. The active oxidant Co3+ and abundant hydroxyl were concluded to dominate the low-temperature activity of Ni x Co 3-x catalysts. [ABSTRACT FROM AUTHOR]

Abstract Cooking oil fumes as an important source of volatile organic compounds in metropolitan areas are poisonous to the environment and human health. In this study, the removal of hexanal (a representative of cooking fume) using "storage-plasma catalytic oxidation" at ambient conditions has been investigated. Alkali-modified Co-Mn catalysts were synthesized by coprecipitation method and further characterized by XRD, SEM, N 2 adsorption–desorption, H 2 -TPR, O 2 -TPD and XPS techniques. It was clearly shown that the Na modification afforded a remarkable enhancement in the hexanal storage capacity, which is ascribed to the formation of surface hydroxyls that resulted in the chemical adsorption. Moreover, the plasma-catalytic oxidation results showed 99.4% hexanal removal and 85.7% CO 2 selectivity at a GHSV of 47700 h−1. XPS results revealed that Na modification promoted the formation of more abundant Co3+, Mn3+ cations and surface adsorbed oxygen species, thus facilitated the oxidation process. In-situ FTIR results revealed that Na modification could trigger disproportionation reaction, resulting in the transformation of adsorbed hexanal into alcohol and carboxylic acid thus further speeds up the oxidation rate. This work provides a low-cost, highly efficient and energy-consuming approach for the removal of gaseous cooking fume by storage and plasma catalytic oxidation cycle at room temperature. Graphical abstract Na modification led to the formation of hydroxyl group, promoted chemical adsorption of hexanal, thus facilitated the catalytic oxidation reaction. Image 1 Highlights • Alkali-modified Co-Mn solid solution catalysts were successfully prepared by coprecipitation method. • CoMn-Na shows superior hexanal storage capacity due to the surface hydroxyls that resulted in the chemical adsorption. • Disproportionation of hexanal into alcohol and carboxylic acid further speeds up the oxidation rate. • The "storage-plasma oxidation" system offers a highly efficient and energy-consuming approach for VOCs removal in the cooking fume. [ABSTRACT FROM AUTHOR]

Curcumin has been widely used to treat numerous diseases due to its antioxidant property. The aim of the present study is to investigate the effect of curcumin on skeletal muscle mitochondria in chronic obstructive pulmonary disease (COPD) and its underlying mechanism. The rat model of COPD was established by cigarette smoke exposure combined with intratracheal administration of lipopolysaccharide. Airway inflammation and emphysema were notably ameliorated by the treatment with curcumin. Oral administration of curcumin significantly improved muscle fiber atrophy, myofibril disorganization, interstitial fibrosis and mitochondrial structure damage in the skeletal muscle of COPD rats. Mitochondrial enzyme activities of cytochrome c oxidase, succinate dehydrogenase, Na + /K + -ATPase and Ca 2+ -ATPase in skeletal muscle mitochondria from COPD rats were significantly increased after treatment with curcumin. Moreover, curcumin significantly decreased oxidative stress and inflammation by determining the levels of malondialdehyde, manganese superoxide dismutase, glutathione peroxidase, catalase, IL-6 and TNF-α in skeletal muscle of COPD rats. Furthermore, curcumin significantly increased the mRNA and protein expression of PGC-1α and SIRT3 in the skeletal muscle tissues of COPD rats. These results suggested that curcumin can attenuate skeletal muscle mitochondrial impairment in COPD rats possibly by the up-regulation of PGC-1α/SIRT3 signaling pathway. [ABSTRACT FROM AUTHOR]