检索结果-南通市图书馆

Biomedical and Environmental Sciences 2022年第6期35卷 568-572页

作者： LIU Yu WANG Xiao Feng XI Jun Yan XIAO Qi Peng HE Li Ping LU Ci Yong HE Ling School of Public health Xiangnan UniversityChenzhou 423001HunanChina Department of Medical Statistics School of Public HealthSun Yat-sen UniversityGuangzhou 510080GuangdongChina Department of Epidemiology School of Public HealthSun Yat-Sen UniversityGuangzhou 510080GuangdongChina School of Educational Sciences Xiangnan UniversityChenzhou 423001HunanChina School of Educational Sciences Hunan Normal UniversityChangsha 410081HunanChina

In December 2019,an outbreak of COVID-19 occurred in Wuhan City in Hubei province of China.Neighboring Hunan province launched a Level 1 public health emergency response on January 24,2020.Chenzhou City,located in the southernmost part of Hunan province,bordering Guangdong province and Jiangxi province,has formed an agglomeration zone for processing trade and laborintensive industries.At the beginning of the outbreak,most businesses in this region suspended production,and they resumed production gradually after February 10,2020.

关键词： Hunan resume Impact

Microstructure refinement and second phase particle regulation of Mo-Y_(2)O_(3) alloys by minor TiC additive

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2022年第11期29卷 2012-2019页

作者： Weiqiang Hu Fengming Gong Shaocun Liu Jing Tan Songhua Chen Hui Wang Zongqing Ma Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300072China CNPC Project Management Company Tianjin Design Institute Tianjin 300072China college of Chemistry and Material Science Longyan UniversityLongyan 364012China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

The oxide dispersion strengthened Mo alloys(ODS-Mo)prepared by traditional ball milling and subsequent sintering technique generally possess comparatively coarse Mo grains and large oxide particles at Mo grain boundaries(GBs),which obviously suppress the corresponding strengthening effect of oxide addition.In this work,the Y_(2)O_(3) and TiC particles were simultaneously doped into Mo alloys using ball-milling and subsequent low temperature sintering.Accompanied by TiC addition,the Mo-Y_(2)O_(3) grains are sharply refined from 3.12 to 1.36μm.In particular,Y_(2)O_(3) and TiC can form smaller Y-Ti-O-C quaternary phase particles(~230 nm)at Mo GBs compared to single Y_(2)O_(3) particles(~420 nm),so as to these new formed Y-Ti-O-C particles can more effectively pin and hinder GBs movement.In addition to Y-Ti-O-C particles at GBs,Y_(2)O_(3),TiOx,and TiCx nanoparticles(<100 nm)also exist within Mo grains,which is significantly different from traditional ODS-Mo.The appearance of TiOx phase indicates that some active Ti within TiC can adsorb oxygen impurities of Mo matrix to form a new strengthening phase,thus strengthening and purifying Mo matrix.Furthermore,the pure Mo,Mo-Y_(2)O_(3),and Mo-Y_(2)O_(3)-TiC alloys have similar relative densities(97.4%-98.0%).More importantly,the Mo-Y_(2)O_(3)-TiC alloys exhibit higher hardness(HV0.2(425±25))compared to Mo-Y_(2)O_(3) alloys(HV0.2(370±25)).This work could provide a relevant strategy for the preparation of ultrafine Mo alloys by facile ball-milling.

关键词： Mo-Y_(2)O_(3)-TiC alloys ball-milling low temperature sintering ultrafine grains high hardness

Fabricating Ru single atoms and clusters on CoP for boosted hydrogen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2023年第4期42卷 46-50页

作者： Xiaoqi Wang Jitang Zhang Zongpeng Wang Zhiping Lin Shijie Shen Wenwu Zhong School of Material Science and Engineering Taizhou UniversityTaizhou318000China

Single atom catalysts(SATs)process the highest utilization efficiency of noble metals.The synergistic effect of noble single atoms and clusters,however,is insufficiently explored.In this work,Ru single atoms and clusters are fabricated on CoP substrate simultaneously,using a facile synchronous phosphorization method,with pre-prepared CoOOH and RuCl_(3)mixture as the raw materials.It is demonstrated that strong charge transfer is established between Co and Ru elements,which leads to electron-sufficient Ru sites.As a result,the Ru species decorated CoP exhibits excellent electrocatalytic activity for HER,with an overpotential of 32 mV to afford a current density of 10 mA/cm^(2)and a Tafel slope of 37.6 mV/dec,much better than the pure CoP counterpart.This work provides insights into the exploration of synergistic effect of noble metal single atoms and clusters fabricated on transition metal phosphide substrate.

关键词： Single atom Cluster CoP Hydrogen evolution reaction

Reliability and validity of the hidden hunger assessment scale in China-revised for high school students

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Global Health Journal 2023年第2期7卷 110-116页

作者： Ning Zhang Minao Wang Yuchen Zhang Huake Cao Yang Yang Yuhang Shi Yang Pei Feixiang Yang Yinan Du School of Basic Medical Sciences Anhui Medical UniversityHefeiAnhui 230032China First School of Clinical Medicine Anhui Medical UniversityHefeiAnhui 230032China First Affiliated Hospital of Anhui Medical University HefeiAnhui 230022China Second School of Clinical Medicine Anhui Medical UniversityHefeiAnhui 230032China

Objective:Hidden hunger remains a severe public health problem that affects millions of people worldwide.In China,challenges related to dietary imbalance and hidden hunger persist.Micronutrient inadequacy deserves more attention among adolescents,given its vital role in their growth and development;however,this problem appears to have been largely ignored.High school students,in particular,are often at a high risk of hidden hunger but have limited assessment tools available.Therefore,this study aims to revise the hidden hunger assessment scale for high school students(HHAS-HSS)in China and assess its reliability and validity.Methods:Based on a literature review,expert consultation,pre-experiment,and formal survey,a hidden hunger assessment scale was revised for high school students.The formal survey involved 9336 high school students in 11 of the 16 cities in Anhui province,China,and 9038 valid questionnaires were collected and included in the analysis.The item analysis,internal consistency reliability,test-retest reliability,content validity,exploratory factor analysis,and confirmatory factor analysis of the HHAS-HSS were examined.Results:The HHAS-HSS included a total of 4 dimensions and 12 items:"vegetables and food diversity"(three items),"fruits and dairy products"(three items),"micronutrient-dense foods"(four items),and"health condition and eating habits"(two items).The results showed a Cronbach's alpha of 0.758,a split-half reliability of 0.829,and a test-retest reliability of o.793,indicating good internal consistency.Using the Bartlett's test and Kaiser-Meyer-Olkin test(KMO)to test the exploratory factor analysis presented a four-factor model of the HHAS-HSS,the KMO0 value was 0.820(P<0.001),which indicated the possibility for factor confirmatory factor analysis.Using the maximum variance rotation method,four factors were obtained,and the cumulative variance explained rate was 57.974%.Confirmatory factor analysis also supported the division of the scale into four dimensions,and the fitting indices were x^

关键词： Hidden hunger Reliability and validity Assessment scale High school student Micronutrients

Recent advances of sorafenib nanoformulations for cancer therapy:Smart nanosystem and combination therapy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Pharmaceutical Sciences 2021年第3期16卷 318-336页

作者： Fangmin Chen Yifan Fang Xiang Chen Rui Deng Yongjie Zhang Jingwei Shao fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy College of ChemistryFuzhou UniversityFuzhouFujian 350116China Institute of Oceanography Minjiang UniversityFuzhou 350108China

Sorafenib,a molecular targeted multi-kinase inhibitor,has received considerable interests in recent years due to its significant profiles of efficacy in cancer therapy.However,poor pharmacokinetic properties such as limited water solubility,rapid elimination and metabolism lead to low bioavailability,restricting its further clinical application.Over the past decade,with substantial progress achieved in the development of nanotechnology,various types of smart sorafenib nanoformulations have been developed to improve the targetability as well as the bioavailability of sorafenib.In this review,we summarize various aspects from the preparation and characterization to the evaluation of antitumor efficacy of numerous stimuli-responsive sorafenib nanodelivery systems,particularly with emphasis on their mechanism of drug release and tumor microenvironment response.In addition,this review makes great effort to summarize the nanosystem-based combination therapy of sorafenib with other antitumor agents,which can provide detailed information for further synergistic cancer therapy.In the final section of this review,we also provide a detailed discussion of future challenges and prospects of designing and developing ideal sorafenib nanoformulations for clinical cancer therapy.

关键词： Sorafenib Multi-kinase inhibitor Smart nanodelivery systems Tumor microenvironment Combination therapy

A smart dual-drug nanosystem based on coassembly of plant and food-derived natural products for synergistic HCC immunotherapy

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2021年第1期11卷 246-257页

作者： Bingchen Zhang Jiali Jiang Pengyu Wu Junjie Zou Jingqing Le Juanfang Lin Chao Li Bangyue Luo Yongjie Zhang Rui Huang Jingwei Shao fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy College of ChemistryFuzhou UniversityFuzhou 350116China Institute of Oceanography Minjiang UniversityFuzhou 350108China

Nanotechnology has emerged as an ideal approach for achieving the efficient chemo agent delivery.However,the potential toxicity and unclear internal metabolism of most nano-carriers was still a major obstacle for the clinical application.Herein,a novel"core-shell"co-assembly carrier-free nanosystem was constructed based on natural sources of ursolic acid(UA)and polyphenol(EGCG)with the EpCAM-aptamer modification for hepatocellular carcinoma(HCC)synergistic treatment.As the nature products derived from food-plant,UA and EGCG had good anticancer activities and low toxicity.With the simple and"green"method,the nanodrugs had the advantages of good stability,p H-responsive and strong penetration of tumor tissues,which was expected to increase tumor cellular uptake,long circulation and effectively avoid the potential defects of traditional carriers.The nanocomplex exhibited the low cytotoxicity in the normal cells in vitro,good biosafety of organic tissues and efficient tumor accumulation in vivo.Importantly,UA combined with EGCG showed the immunotherapy by activating the innate immunity and acquired immunity resulting in significant synergistic therapeutic effect.The research could provide new ideas for the research and development of self-assembly delivery system in the future,and offer effective intervention strategies for clinical HCC treatment.

关键词： Natural product Ursolic acid EGCG Aptamer Co-assembly Nanodrug HCC Synergistic treatment Immunotherapy

Construction and evaluation of an alcohol vapor chamber system

在线全文

学校读者我要写书评

暂无评论

The Journal of Biomedical Research 2023年第2期37卷 115-124页

作者： Wan Jiang Jiajia Chen Olivia Ewi Vidjro Yingying Zhang Gengni Guo Ziyi Li Yize Qi Rouli Dai Tengfei Ma School of Pharmacy Nanjing Medical UniversityNanjingJiangsu 211166China Translational Medicine Research Center for Drug Dependence and Withdrawal Nanjing Medical UniversityJiangsu 211166China National Institute of Drug Clinical Trial The Fourth Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210031China

An increasing number of studies demonstrated that alcohol vapor chamber is an effective way to model physical signs of alcohol use disorders. Although researchers are developing different vapor chambers to study chronic alcohol exposure model worldwide, few studies build and modify their own vapor chambers in China.Here, we designed and established an alcohol vapor chamber system for small animals. We described a paradigm showing how to control and monitor alcohol concentration in whole system. The vapor chamber system with several advantages including accommodating up to ten standard mouse cages. Furthermore, the system was tested by evaluating the blood alcohol concentration and neuron injury in mice. Importantly, the alcohol withdrawal after vapor exposure caused motor coordination impairment, anxiolytic-and depression-like behavior. Finally, the Nmethyl-D-aspartate receptor(NMDAR)-mediated glutamatergic transmissions in the medial prefrontal cortex was changed after alcohol vapor exposure-induced behaviors. The frequency and amplitude of spontaneous excitatory postsynaptic currents between control and alcohol groups were not different, suggesting that alcohol exposureinduced behaviors are associated with the change in NMDAR response. Taken together, the new alcohol vapor chamber system was constructed, which would help to research the relationship between the stable alcohol exposure and withdrawal behaviors and to study chronic alcohol exposure-induced disorders in China.

关键词： alcohol use disorders alcohol vapor model anxiety depression NMDA receptor

Cyclic arginine-glycine-aspartic acid-modified red blood cells for drug delivery:Synthesis and in vitro evaluation

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2022年第2期12卷 324-331页

作者： Chen Wang Min Wang Yan Zhang Hongxin Jia Binbin Chen Department of Pharmaceutics School of PharmacyXiamen Medical CollegeXiamenFujian361023China Institute of Respiratory Diseases Xiamen Medical CollegeXiamenFujian361023China Department of Pharmaceutics School of PharmacyHarbin University of CommerceHarbin150076China Department of Pharmacy Xiamen Xianyue HospitalXiamenFujian361012China

Red blood cells(RBCs)are an excellent choice for cell preparation research because of their biocompatibility,high drug loading,and long half-life.In this study,doxorubicin(DOX)was encapsulated with RBCs as the carrier.The biotin-avidin system binding principle was used to modify biotinylated cyclic arginine-glycine-aspartic acid(cRGD)onto RBC surfaces for accurate targeting,high drug loading,and sustained drug release.The RBC drug delivery system(DDS)was characterized,and the concentration of surface sulfur in the energy spectrum was 6.330%.The physical and chemical properties of RBC DDS were as follows:drug content,0.857 mg/mL;particle size,3339 nm;potential value,12.5 mV;and cumulative release rate,81.35%.There was no significant change in RBC morphology for up to seven days.The results of the targeting and cytotoxicity studies of RBC DDS showed that many RBCs covered the surfaces of U251 cells,and the fluorescence intensity was higher than that of MCF-7 cells.The IC50 value of unmodified drug-loaded RBCs was 2.5 times higher than that of targeted modified drug-loaded RBCs,indicating that the targeting of cancer cells produced satisfactory inhibition.This study confirms that the RBC DDS has the characteristics of accurate targeting,high drug loading,and slow drug release,which increases its likelihood of becoming a clinical cancer treatment in the future.

关键词： Cytotoxicity Red blood cells Drug delivery Targeting

Profile of the RNA in exosomes from astrocytes and microglia using deep sequencing:implications for neurodegeneration mechanisms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2022年第3期17卷 608-617页

作者： Hui-Min Xie Xing Su Feng-Yuan Zhang Chao-Lun Dai Rong-Hua Wu Yan Li Xiao-Xiao Han Xing-Mei Feng Bin Yu Shun-Xing Zhu Song-Lin Zhou Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education Co-Innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina Department of Stomatology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Department of Neurosurgery Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Medical college of Nantong University NantongJiangsu ProvinceChina Laboratory Animals Center Nantong UniversityNantongJiangsu ProvinceChina

Glial cells play an important role in signal transduction,energy metabolism,extracellular ion homeostasis and neuroprotection of the central nervous system.However,few studies have explained the potential effects of exosomes from glial cells on central nervous system health and disease.In this study,the genes expressed in exosomes from astrocytes and microglia were identified by deep RNA sequencing.Kyoto Encyclopedia of Genes and Genomes analysis indicated that several pathways in these exosomes are responsible for promoting neurodegenerative diseases,including Alzheimer's disease,Parkinson's disease and Huntington's disease.Gene ontology analysis showed that extracellular exosome,mitochondrion and growth factor activity were enriched in exosomes from the unique astrocyte group,while extracellular exosome and mitochondrion were enriched in exosomes from the unique microglia group.Next,combined with the screening of hub genes,the protein-protein interaction network analysis showed that exosomes from astrocytes influence neurodegenerative diseases through metabolic balance and ubiquitin-dependent protein balance,whereas exosomes from microglia influence neurodegenerative diseases through immune inflammation and oxidative stress.Although there were differences in RNA expression between exosomes from astrocytes and microglia,the groups were related by the hub genes,ubiquitin B and heat shock protein family A(Hsp70) member 8.Ubiquitin B appeared to be involved in pleiotropic regulatory functions,including immune regulation,inflammation inhibition,protein catabolism,intracellular protein transport,exosomes and oxidative stress.The results revealed the clinical significance of exosomes from glia in neurodegenerative diseases.This study was approved by the Animal Ethics Committee of Nantong University,China(approval No.S20180102-152) on January 2,2018.

关键词： astrocyte bioinformatics analysis central nervous system exosomes microglia neurodegenerative disease RNA transcriptomics UBB

Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction:Efficient photodegradation of organic pollutant and toxicity evaluation

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第3期170卷 200-211页

作者： Yanyan Zhao Xu Fan Hongxing Zheng Enzhou Liu Jun Fan Xuejun Wang college of Biology Pharmacy and Food Engineering Shangluo UniversityShangluo 726000China QinLing-Bashan Mountains Bioresources Comprehensive Development C.I.C. Shaanxi University of TechnologyHanzhong 723001China School of Chemical Engineering Northwest UniversityXi’an 710069China

Constructing of heterojunction was identified as a feasible way to improve photocatalytic activity of pho-tocatalyst.In this work,a n-p type Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was successfully prepared for organic pollutants degradation.This Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction exhibited much higher pho-tocatalytic activity towards Rhodamine B(92.24%,expose to visible light for 60 min),norfloxacin(81.73%,expose to visible light for 90 min)and levofloxacin(87.46%,expose to visible light for 90 min)than pure Bi_(2)WO_(6)and pure AgInS_(2).Toxicity analysis indicated the low environmental toxicity of Rhodamine B degradation intermediates for Rye seeds and Sudangrass seeds germination and growth.Mechanism study displayed that AgInS_(2)and Bi_(2)WO_(6)work as the primary photocatalyst to form·O_(2)−andOH,respectively.The improved photocatalytic activity of the Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was due to the im-proved light response range and intensified carrier separation capability.Additionally,a S-scheme charge transfer mechanism including multiple charge transfer channels was proposed.This work could provide an effective strategy for organic pollutants degradation in wastewater.

关键词： Photocatalysis S-scheme heterojunction AgInS_(2) Bi_(2)WO_(6) Toxicity experiments