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116篇 您的检索式:作者名="Xuan QIAN"
    题名 作者 年代 出处 被引量
1Characterization of personal exposure concentration of fine particles for adults and children exposed to high ambient concentrations in Beijing, China显示文摘In China, the health risk from overexposure to particles is becoming an important public health concern. To investigate daily exposure characteristics to PM 2.5 with high ambient concentration in urban area, a personal exposure study was conducted for school children, and office workers in Beijing, China. For all participants (N = 114), the mean personal 24-hr exposure concentration was 102.5, 14.7, 0.093, 0.528, 0.934, 0.174 and 0.703 μg/m 3 for PM 2.5 , black carbon, Mn, Al, Ca, Pb, and Fe. Children's exposure concentrations of PM 2.5 were 4-5 times higher than those in related studies. The ambient concentration of PM 2.5 (128.5 μg/m 3 ) was significantly higher than the personal exposure concentration (P < 0.05), and exceed the reference concentration (25 μg/m 3 ) of WHO air quality guideline. Good correlation relationships and significant differences were identified between ambient concentration and personal exposure concentration. The relationships indicate that the ambient concentration is the main factor influencing personal exposure concentration, but is not a good indicator of personal exposure concentration. Outdoor activities (commute mode, exposure to heating, workday or weekend travel) influenced personal exposure concentrations significantly, but the magnitude of the influence from indoor activities (exposure to cooking) was masked by the high ambient concentrations.Xuan Du Qian Kong Weihua Ge Shaojun Zhang Lixin Fu 2010Journal of Environmental Sciences2010,22,11:24
2Diffusion tensor imaging assesses white matter injury in neonates with hypoxic-ischemic encephalopathy显示文摘With improvements in care of at-risk neonates, more and more children survive. This makes it increasingly important to assess, soon after birth, the prognosis of children with hypoxic-ischemic encephalopathy. Computed tomography, ultrasound, and conventional magnetic resonance imaging are helpful to diagnose brain injury, but cannot quantify white matter damage. In this study, ten full-term infants without brain injury and twenty-two full-term neonates with hypoxic-ischemic encephalopathy(14 moderate cases and 8 severe cases) underwent diffusion tensor imaging to assess its feasibility in evaluating white matter damage in this condition. Results demonstrated that fractional anisotropy, voxel volume, and number of fiber bundles were different in some brain areas between infants with brain injury and those without brain injury. The correlation between fractional anisotropy values and neonatal behavioral neurological assessment scores was closest in the posterior limbs of the internal capsule. We conclude that diffusion tensor imaging can quantify white matter injury in neonates with hypoxic-ischemic encephalopathy.Hong-xin Li Xing Feng Qian Wang Xuan Dong Min Yu Wen-juan Tu 2017Neural Regeneration Research2017,12,4:19
3Connective tissue diseases in primary biliary cirrhosis:A population-based cohort study显示文摘AIM:To establish the frequency and clinical features of connective tissue diseases(CTDs)in a cohort of Chinese patients with primary biliary cirrhosis(PBC).METHODS:Three-hundred and twenty-two Chinese PBC patients were screened for the presence of CTD,and the systemic involvement was assessed.The differences in clinical features and laboratory findings between PBC patients with and without CTD were documented.The diversity of incidence of CTDs in PBC of different countries and areas was discussed.For the comparison of normally distributed data,Student’s t test was used,while non-parametric test(Wilcoxon test)for the non-normally distributed data and 2×2χ2or Fisher’s exact tests for the ratio.RESULTS:One-hundred and fifty(46.6%)PBC patients had one or more CTDs.The most common CTD was Sj gren’s syndrome(SS,121 cases,36.2%).There were nine cases of systemic sclerosis(SSc,2.8%),12of systemic lupus erythematosus(SLE,3.7%),nine of rheumatoid arthritis(RA,2.8%),and 10 of polymyositis(PM,3.1%)in this cohort.Compared to patients with PBC only,the PBC+SS patients were more likely to have fever and elevated erythrocyte sedimentation rate(ESR),higher serum immunoglobulin G(IgG)levels and more frequent rheumatoid factor(RF)and interstitial lung disease(ILD)incidences;PBC+SSc patients had higher frequency of ILD;PBC+SLE patients had lower white blood cell(WBC)count,hemoglobin(Hb),platelet count,γ-glutamyl transpeptidase and immunoglobulin M levels,but higher frequency of renal involvement;PBC+RA patients had lower Hb,higher serum IgG,alkaline phosphatase,faster ESR and a higher ratio of RF positivity;PBC+PM patients had higher WBC count and a tendency towards myocardial involvement.CONCLUSION:Besides the common liver manifestation of PBC,systemic involvement and overlaps with other CTDs are not infrequent in Chinese patients.When overlapping with other CTDs,PBC patients manifested some special clinical and laboratory features which may have effect on the prognosis.Li Wang Feng-Chun Zhang Hua Chen Xuan Zhang Dong Xu Yong-Zhe Li Qian Wang Li-Xia Gao Yun-Jiao Yang Fang Kong Ke Wang 2013World Journal of Gastroenterology2013,19,31:18
4Blocking FSH inhibits hepatic cholesterol biosynthesis and reduces serum cholesterol显示文摘Menopause is associated with dyslipidemia and an increased risk of cardio-cerebrovascular disease.The classic view assumes that the underlying mechanism of dyslipidemia is attributed to an insufficiency of estrogen.In addition to a decrease in estrogen, circulating follicle-stimulating hormone (FSH)levels become elevated at menopause.In this study,we find that blocking FSH reduces serum cholesterol via inhibiting hepatic cholesterol biosynthesis.First,epidemiological results show that the serum FSH levels are positively correlated with the serum total cholesterol levels,even after adjustment by considering the effects of serum estrogen,in addition,the prevalence of hypercholesterolemia is significantly higher in peri-menopausal women than that in premenopausal women.Furthermore,we generated a mouse model of FSH elevation by intraperitoneally injecting exogenous FSH into ovariectomized (OVX)mice,in which a normal level of estrogen (E2)was maintained by exogenous supplementation. Consistently,the results indicate that FSH,independent of estrogen,increases the serum cholesterol level in this mouse model. Moreover,blocking FSH signaling by anti-FSHβ antibody or ablating the FSH receptor (FSHR)gene could effectively prevent hypercholesterolemia induced by FSH injection or high-cholesterol diet feeding.Mechanistically,FSH,via binding to hepatic FSHRs, activates the Gi2α/β-arrestin-2/Akt pathway and subsequently inhibits the binding of FoxO1 with the SREBP-2 promoter,thus preventing FoxO1 from repressing SREBP-2 gene transcription.This effect,in turn,results in the upregulation of SREBP-2,which drives HMGCR nascent transcription and de novo cholesterol biosynthesis,leading to the increase of cholesterol accumulation.This study uncovers that blocking FSH signaling might be a new strategy for treating hypercholesterolemia during menopause, particularly for women in peri-menopause characterized by FSH elevation only.Yanjing Guo Meng Zhao Tao Bo Shizhan Ma Zhongshang Yuan Wenbin Chen Zhao He Xu Hou Jun Liu Zhenhai Zhang Qiang Zhu Qiangxiu Wang Xiaoyan Lin Zhongli Yang Min Cui Lu Liu Yujie Li Chunxiao Yu Xiaoyi Qi Qian Wang Haiqing Zhang Qingbo Guan Lifang Zhao Shimeng Xuan Huili Yan Yanliang Lin Li Wang Qihang Li Yongfeng Song Ling Gao Jiajun Zhao 2019Cell Research2019,29,2:16
5Investigation of gas content of organic-rich shale:A case study from Lower Permian shale in southern North China Basin,central China显示文摘Measuring gas content is an essential step in estimating the commerciality of gas reserves. In this study,eight shale core samples from the Mouye-1 well were measured using a homemade patented gas desorption apparatus to determine their gas contents. Due to the air contamination that is introduced into the desorption canister, a mathematical method was devised to correct the gas quantity and quality.Compared to the chemical compositions of desorbed gas, the chemical compositions of residual gas are somewhat different. In residual gas, carbon dioxide and nitrogen record a slight increase, and propane is first observed. This phenomenon may be related to the exposure time during the transportation of shale samples from the drilling site to the laboratory, as well as the differences in the mass, size and adsorptivity of different gas molecules. In addition to a series of conventional methods, including the USBM direct method and the Amoco Curve Fit(ACF) method, which were used here for lost gas content estimation, a Modified Curve Fit(MCF) method, based on the 'bidisperse' diffusion model, was established to estimate lost gas content. By fitting the ACF and MCF models to gas desorption data, we determined that the MCF method could reasonably describe the gas desorption data over the entire time period, whereas the ACF method failed. The failure of the ACF method to describe the gas desorption process may be related to its restrictive assumption of a single pore size within shale samples. In comparison to the indirect method, this study demonstrates that none of the three methods studied in this investigation(USBM, ACF and MCF) could individually estimate the lost gas contents of all shale samples and that the proportion of free gas relative to total gas has a significant effect on the estimation accuracy of the selected method. When the ratio of free gas to total gas is lower than 45%, the USBM method is the best for estimating the lost gas content, whereas when the ratio ranges from 45% to 75% or is more than 75%, the ACF and MCF methods, are the best options respectively.Wei Dang Jin-Chuan Zhang Xuan Tang Xiao-Liang Wei Zhong-Ming Li Cheng-Hu Wang Qian Chen Chong Liu 2018Geoscience Frontiers2018,9,2:14
6Core-shell Au@MnO2 nanoparticles for enhanced radiotherapy via improving the tumor oxygenation显示文摘在稳固的肿瘤的本地组织缺氧经常导致抵抗到放射疗法(RT ) ,在哪个氧为提高 DNA 损坏的一个必要元素被电离引起放射。此处,我们开发了 gold@manganese 二氧化物(有聚乙烯乙二醇(木钉) 的 Au@MnO 2) 核心壳 nanoparticles 是的涂层在癌症治疗期间改进 RT 功效的一个新奇 radiosensitizing 代理人。在这 Au@MnO 2 nanostructure ,当金核心是著名 RT 时,交往与的 sensitizer X光检查为在 RT 下面杀死的改进癌症生产控告的粒子, MnO 2壳可以触发内长的 H 2在肿瘤微型环境到的 O 2产生氧并且克服 hypoxiaassociated RT 抵抗。是示威了由在 vitro 并且在 vivo 实验, Au@MnO 2-PEG nanoparticles 充当了有效 radiosensitizers 显著地在 RT 期间提高癌症治疗功效。而且, Au@MnO 2-PEG 的明显的副作用都没在老鼠被观察。因此,我们的工作为 hypoxic 肿瘤的提高的 RT 治疗与潜力介绍 radiosensitizer 的一种新类型。Xuan Yi Lei Chen Xiaoyan Zhong Roulin Gao Yitao Qian Fan Wu Guosheng Song Zhifang Chai Zhuang Liu Kai Yang 2016Nano Research2016,9,11:12
7Clinical practice guidelines for breast cancer implantable intravenous infusion ports:Chinese Society of Breast Surgery practice guidelines 2021显示文摘To standardize the clinical application of implantable intravenous(IV)ports,the Chinese Society of Breast Surgery(CSBrS)of the Chinese Medical Association has identified the key clinical issues through literature research and expert discussion and evaluated the relevant evidence with reference to the grading of recommendations assessment,development,and evaluation.The CSBrS formulated the clinical practice guidelines to provide a reference for physicians specializing in breast cancer and other fields.Li Ma Zhi-Cheng Ge Ling Xin Ying-Xin Wang Yan-Shou Zhang Tian-Tian Tang Guo-Xuan Gao Qian Liu Xuan Zhao Yun-Jiang Liu Xiang Qu 2021Chinese Medical Journal2021,,16:11
8Whole-Genome Resequencing of a Worldwide Collection of Rapeseed Accessions Reveals the Genetic Basis of Ecotype Divergence显示文摘Rapeseed (Brassica napus),an important oilseed crop,has adapted to diverse climate zones and latitudes by forming three main ecotype groups,namely winter,semiwinter,and spring types. However,genetic variations underlying the divergence of these ecotypes are largely unknown. Here,we report the global pattern of genetic polymorphisms in rapeseed determined by resequencing a worldwide collection of 991 germplasm accessions.A total of 5.56 and 5.53 million singlenucleotide polymorphisms (SNPs)as Well as 1.86 and 1.92 million InDels were identified by mapping reads to the reference genomes of 'Darmor-bzh'and 'Tapidor,'respectively.We generated a map of allelic drift paths that shows splits and mixtures of the main populations,and revealed an asymmetric evolution of the two subgenomes of B.napus by calculating the genetic diversity and linkage disequilibrium parameters.Selective-sweep analysis revealed genetic changes in genes orthologous to those regulating various aspects of plant development and response to stresses.A genome-wide association study identified SNPs in the promoter regions of FLOWERING LOCUS T and FLOWERING LOCUS C orthologs that corresponded to the different rapeseed ecotype groups. Our study provides important insights into the genomic footprints of rapeseed evolution and flowering-time divergence among three ecotype groups,and will facilitate screening of molecular markers for accelerating rapeseed breeding.Dezhi Wu Zhe Liang Tao Yan Ying Xu Lijie Xuan Juan Tang Gang Zhou Ulrike Lohwasser Shuijin Hua Haoyi Wang Xiaoyang Chen Qian Wang Le Zhu Antony Maodzeka Nazim Hussain Zhilan Li Xuming Li Imran Haider Shamsi Ghulam Jilani Linde Wu Hongkun Zheng Guoping Zhang Boulos Chalhoub Lisha Shen Hao Yu Lixi Jiang 2019Molecular Plant2019,12,1:10
9Molecular characteristics and structure–activity relationships of food-derived bioactive peptides显示文摘Peptides are functional active fragments of proteins which can provide nutrients needed for human growth and development,and they also have unique physiological activity characteristics relative to proteins.Bioactive peptides contain a great deal of development potential.More specifically,food-derived bioactive peptides have the advantages of a wide variety of sources,unique structures,high efficiency and safety,so they have broad development prospects.This review provides an overview of the current advances regarding the preparation,functional characteristics,and structure–activity relationships of food-derived bioactive peptides.Moreover,the prospects for the future development and application of food-derived bioactive peptides are discussed.This review may provide a better understanding of foodderived bioactive peptides,and some constructive inspirations for further research and applications in the food industry.YANG Fu-jia CHEN Xu HUANG Mu-chen YANG Qian CAI Xi-xi CHEN Xuan DU Ming HUANG Jian-lian WANG Shao-yun 2021Journal of Integrative Agriculture2021,20,9:9
10Sirt1 inhibits renal tubular cell epithelial–mesenchymal transition through YY1 deacetylation in diabetic nephropathy显示文摘Silent information regulator 1(Sirt1)is a deacetylase,which plays an important role in the occurrence and development of diabetic nephropathy(DN).Our previous study shows that Yin yang 1(YY1),a widely expressed zinc finger DNA/RNA-binding transcription factor,is a novel regulator of renal fibrosis in diabetic nephropathy.Since the activity of YY1 is regulated via acetylation and deacetylation modification,this study aimed to explore whether Sirt1-induced deacetylation of YY1 mediated high glucose(HG)-induced renal tubular epithelial–mesenchymal transition(EMT)and renal fibrosis in vivo and in vitro.We first confirmed that Sirt1 expression level was significantly decreased in the kidney of db/db mice and in HG-treated HK-2 cells.Diabetes-induced Sirt1 reduction enhanced the level of YY1 acetylation and renal tubular EMT.Then,we manipulated Sirt1 expression in vivo and in vitro by injecting resveratrol(50 mg·kg^(−1)·d^(−1).ip)to db/db mice for 2 weeks or application of SRT1720(2.5μM)in HG-treated HK-2 cells,we found that activation of Sirt1 reversed the renal tubular EMT and YY1 acetylation induced by HG condition.On the contrary,Sirt1 was knocked down in db/m mice or EX527(1μM)was added in HK-2 cells,we found that inhibition of Sirt1 exacerbated renal fibrosis in diabetic mice and enhanced level of YY1 acetylation in HK-2 cells.Furthermore,knockdown of YY1 inhibited the ameliorating effect of resveratrol on renal tubular EMT and renal fibrosis in db/db mice.In conclusion,this study demonstrates that Sirt1 plays an important role in renal tubular EMT of DN through mediating deacetylation of YY1.Lei Du Xuan Qian Yuan Li Xi-zhi Li Lin-lin He Liu Xu Yi-qi Liu Cheng-cheng Li Pu Ma Fang-lin Shu Qian Lu Xiao-xing Yin 2021Acta Pharmacologica Sinica2021,42,2:8
11Monocyte chemoattractant protein-1 induces endothelial cell apoptosis in vitro through a p53-dependent mitochondrial pathway显示文摘cystinecystine (CC ) chemokine 单核白血球 chemoattractant protein-1 (MCP-1 ) 被建立了由于它领先的单核白血球的趋化性的能力在动脉粥样硬化的发展起一个病原的作用定位到 subendothelia。最近的研究揭示了除趋化性以外的更多的 MCP-1 功能。这里,我们报导 MCP-1 的各种各样的集中(0.1100 ng/ml ) 导致了人的脐的静脉 endothelial 房间(HUVEC ) 紧张 CRL-1730 apoptosis, caspase-9 激活,和几 mitochondrial 改变。而且, HUVEC 的 MCP-1 upregulated p53 表示和 p53 特定的禁止者 pifithrin-(PFT ) 救了 HUVEC 的 MCP-1-induced apoptosis。而且,激活或抑制可能也影响的 PKC (蛋白质 kinase C ) HUVEC apoptosis 由 MCP-1 导致了。这些调查结果一起证明 MCP-1 经由一条 p53 依赖的 mitochondrial 小径在 vitro 在 HUVEC 上施加直接 proapoptotic 效果。Xuan Zhang, Xiping Liu Huifeng Shang Yan Xu Minzhang Qian 2011Acta Biochimica et Biophysica Sinica2011,43,10:6
12Poly(ADP-ribosyl)ation of Apoptosis Antagonizing Transcription Factor Involved in Hydroquinone-Induced DNA Damage Response显示文摘The molecular mechanism of DNA damage induced by hydroquinone(HQ)remains unclear.Poly(ADP-ribose)polymerase-1(PARP-1)usually works as a DNA damage sensor,and hence,it is possible that PARP-1 is involved in the DNA damage response induced by HQ.In TK6 cells treated with HQ,PARP activity as well as the expression of apoptosis antagonizingling xiao xuan liu jia xian yun lin du yu jun chen shao qian chen jia long tang huan wen liu lin hua 2016Biomedical and Environmental Sciences2016,29,1:6
13Reveal training performance mystery between Tensor Flow and PyTorch in the single GPU environment显示文摘Deep learning has gained tremendous success in various fields while training deep neural networks(DNNs)is very compute-intensive,which results in numerous deep learning frameworks that aim to offer better usability and higher performance to deep learning practitioners.Tensor Flow and Py Torch are the two most popular frameworks.Tensor Flow is more promising within the industry context,while Py Torch is more appealing in academia.However,these two frameworks differ much owing to the opposite design philosophy:static vs dynamic computation graph.Tensor Flow is regarded as being more performance-friendly as it has more opportunities to perform optimizations with the full view of the computation graph.However,there are also claims that Py Torch is faster than Tensor Flow sometimes,which confuses the end-users on the choice between them.In this paper,we carry out the analytical and experimental analysis to unravel the mystery of comparison in training speed on single-GPU between Tensor Flow and Py Torch.To ensure that our investigation is as comprehensive as possible,we carefully select seven popular neural networks,which cover computer vision,speech recognition,and natural language processing(NLP).The contributions of this work are two-fold.First,we conduct the detailed benchmarking experiments on Tensor Flow and Py Torch and analyze the reasons for their performance difference.This work provides the guidance for the end-users to choose between these two frameworks.Second,we identify some key factors that affect the performance,which can direct the end-users to write their models more efficiently.Hulin DAI Xuan PENG Xuanhua SHI Ligang HE Qian XIONG Hai JIN 2022Science China(Information Sciences)2022,65,1:6
14Combination of heterogeneous Fenton-like reaction and photocatalysis using Co–TiO_2 nanocatalyst for activation of KHSO_5 with visible light irradiation at ambient conditions显示文摘A novel coupled system using Co–Ti O2was successfully designed which combined two different heterogeneous advanced oxidation processes,sulfate radical based Fenton-like reaction(SR-Fenton)and visible light photocatalysis(Vis-Photo),for degradation of organic contaminants.The synergistic effect of SR-Fenton and Vis-Photo was observed through comparative tests of 50 mg/L Rhodamine B(Rh B)degradation and TOC removal.The Rhodamine B degradation rate and TOC removal were 100%and 68.1%using the SR-Fenton/Vis-Photo combined process under ambient conditions,respectively.Moreover,based on XRD,XPS and UV-DRS characterization,it can be deduced that tricobalt tetroxide located on the surface of the catalyst is the SR-Fenton active site,and cobalt ion implanted in the Ti O2lattice is the reason for the visible light photocatalytic activity of Co–Ti O2.Finally,the effects of the calcination temperature and cobalt concentration on the synergistic performance were also investigated and a possible mechanism for the synergistic system was proposed.This coupled system exhibited excellent catalytic stability and reusability,and almost no dissolution of Co2+was found.Qingkong Chen Fangying Ji Qian Guo Jianping Fan Xuan Xu 2014Journal of Environmental Sciences2014,26,12:5
15A novel method to determine effective thermal conductivity of porous materials显示文摘A 2D Lattice-Boltzmann (LB) model is proposed for analyzing the heat conduction process in the porous media. The effective thermal conductivities of several porous materials are calculated by means of this model. The calculated results are found to be in excellent agreement with the experimental data of the existing references. The factors affecting the effective thermal conductivity of porous materials are discussed. The results show that the effective thermal conductivity is strongly dependent upon the porosity and the pore structure and only has imperceptible dependence on the pore density. Then the correlation for estimating the effective thermal conductivity of the porous material is established. This LB model can be used conveniently to calculate and analyze the heat conduction problems of porous media or other materials with complex geometry boundary in pore scale.QIAN Jiyu LI Qiang YU Kai XUAN Yimin 2004Science China(Technological Sciences)2004,47,6:5
16Autoimmune pancreatitis:current concepts显示文摘Autoimmune pancreatitis(AIP) is a distinct type of chronic pancreatitis with unique clinical,pathological,serological,and imaging features.AIP usually presents with obstructive jaundice.Imaging studies often reveal enlargement of the pancreas with a pancreatic mass and strictures of the main pancreatic duct.Two subtypes of AIP have recently been identified.Type I AIP is more prevalent in elderly Asian males and is characterized by lymphoplasmacytic sclerosing pancreatitis,obliterative phlebitis,and infiltration of large numbers of IgG4-positive plasma cells.Type II AIP is more prevalent in Caucasians and is characterized by granulocyte epithelial lesions.Most patients with type I AIP have a significantly elevated serum IgG4 concentration,which is an important feature for diagnosis and for differentiating between AIP and other conditions such as pancreatic cancer.Extrapancreatic complications are common,such as sclerosing cholangitis,sclerosing sialadenitis,retroperitoneal fibrosis in type I AIP,and ulcerative colitis in type II AIP.A rapid response to glucocorticoids treatment is suggestive of AIP,but the relapse rate is high,warranting the use of immunosuppressant treatment.B-cell depletion with rituximab may be a promising therapy.The prognosis of AIP is generally benign if treated promptly,and spontaneous remission occurs in a proportion of patients.WANG Qian ZHANG Xuan ZHANG FengChun 2013Science China(Life Sciences)2013,56,3:4
17Development, applications, and future directions of triboelectric nanogenerators显示文摘Mingyuan Ma Zhuo Kang Qingliang Liao Qian Zhang Fangfang Gao Xuan Zhao Zheng Zhang Yue Zhang 2018Nano Research2018,11,6:4
18Research progress in electrospinning engineering for all-solid-state electrolytes of lithium metal batteries显示文摘Owing to safety issue and low energy density of liquid lithium-ion batteries(LIBs),all-solid-state lithium metal batteries(ASLMBs)with unique all-solid-state electrolytes(SEs)have attracted wide attentions.This arises mainly from the advantages of the SEs in the suppression of lithium dendrite growth,long cycle life,and broad working temperature range,showing huge potential applications in electronic devices,electric vehicles,smart grids,and biomedical devices.However,SEs suffer from low lithiumion conductivity and low mechanical integrity,slowing down the development of practical ASLMBs.Nanostructure engineering is of great efficiency in tuning the structure and composition of the SEs with improved lithium-ion conductivity and mechanical integrity.Among various available technologies for nanostructure engineering,electrospinning is a promising technique because of its simple operation,cost-effectiveness,and efficient integration with different components.In this review,we will first give a simple description of the electrospinning process.Then,the use of electrospinning technique in the synthesis of various SEs is summarized,for example,organic nanofibrous matrix,organic/inorganic nanofibrous matrix,and inorganic nanofibrous matrix combined with other components.The current development of the advanced architectures of SEs through electrospinning technology is also presented to provide references and ideas for designing high-performance ASLMBs.Finally,an outlook and further challenges in the preparation of advanced SEs for ASLMBs through electrospinning engineering are given.Manxi Wang Yaling Wu Min Qiu Xuan Li Chuanping Li Ruiling Li Jiabo He Ganggang Lin Qingrong Qian Zhenhai Wen Xiaoyan Li Ziqiang Wang Qi Chen Qinghua Chen Jinhyuk Lee Yiu-Wing Mai Yuming Chen 2021Journal of Energy Chemistry2021,30,10:4
19Natural polymer-derived photocurable bioadhesive hydrogels for sutureless keratoplasty显示文摘Keratoplasty is the gold standard treatment for visual impairment caused by corneal damage.The use of suturing as the bonding method is the source of many complications following keratoplasty.Currently available corneal adhesives do not have both adequate adhesive strength and acceptable biocompatibility.Herein,we developed a photocurable bioadhesive hydrogel which was composed of gelatin methacryloyl and oxidized dextran for sutureless keratoplasty.The bioadhesive hydrogel exhibited high light transmittance,resistance to enzymatic degradation and excellent biocompatibility.It also had higher adhesive strength than commercial adhesives(fibrin glue).In a rabbit model of lamellar keratoplasty,donor corneal grafts could be closely bonded to the recipient corneal bed and remained attached for 56 days by using of this in situ photopolymerized bioadhesive hydrogel.The operated cornea maintained transparent and noninflamed.Sutureless keratoplasty using bioadhesive hydrogel allowed rapid graft re-epithelialization,typically within 7 days.In vivo confocal microscopic and histological evaluation of the operated cornea did not show any apparent abnormalities in terms of corneal cells and ultrastructure.Thus,this bioadhesive hydrogel is exhibited to be an appealing alternative to sutures for keratoplasty and other corneal surgeries.Xuan Zhao Saiqun Li Xinyue Du Weihua Li Qian Wang Dalian He Jin Yuan 2022Bioactive Materials2022,7,2:4
20Investigation of Geiger-mode detector in multi-hit model for laser ranging显示文摘The performance of detector limits the overall performance of laser ranging system. And the design of multi-hit detector is one of the feasible ways to promote the performance of detector. Currently, the segmentation method or the recursive method is commonly used to analyze the multi-hit detector model. To the best of our knowledge, this paper is the first to propose a combinatorial method to solve the multi-hit detector model from the perspective of discrete time. Then, universal formulas of total signal detection probability and the average count are deduced based on the Poisson distribution signal. Furthermore, analysis is made to figure out how the average count changes with different parameters, such as the dead time, gating time, rate intensity. As a result, for GM-APD, the multi-hit detector model is verified advantageously compared to the single-hit detector model in improving the average count theoretically. Meanwhile, a discrete step feature is presented when average count changes with dead time or the gating time, which is of great significance in gating time optimization.ZHAO Peng ZHANG Yan QIAN WeiPing XUAN Ying 2015Science China(Technological Sciences)2015,58,5:4
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