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1Exercise as a prescription for patients with various diseases显示文摘A growing understanding of the benefits of exercise over the past few decades has prompted researchers to take an interest in the possibilities of exercise therapy.Because each sport has its own set of characteristics and physiological complications that tend to occur during exercise training,the effects and underlying mechanisms of exercise remain unclear.Thus,the first step in probing the effects of exercise on different diseases is the selection of an optimal exercise protocol.This review summarizes the latest exercise prescription treatments for 26 different diseases:musculoskeletal system diseases(low back pain,tendon injury,osteoporosis,osteoarthritis,and hip fracture),metabolic system diseases(obesity,type 2 diabetes,type 1 diabetes,and nonalcoholic fatty liver disease),cardio-cerebral vascular system diseases(coronary artery disease,stroke,and chronic heart failure),nervous system diseases(Parkinson’s disease,Huntington’s disease,Alzheimer’s disease,depression,and anxiety disorders),respiratory system diseases(chronic obstructive pulmonary disease,interstitial lung disease,and after lung transplantation),urinary system diseases(chronic kidney disease and after kidney transplantation),and cancers(breast cancer,colon cancer,prostate cancer,and lung cancer).Each exercise prescription is displayed in a corresponding table.The recommended type,intensity,and frequency of exercise prescriptions are summarized,and the effects of exercise therapy on the prevention and rehabilitation of different diseases are discussed.Xin Luan Xiangyang Tian Haixin Zhang Rui Huang Na Li Peijie Chen Ru Wang 2019Journal of Sport and Health Science2019,8,5:61
2Huangqi Guizhi Wuwu Decoction for treating diabetic peripheral neuropathy:a meta-analysis of 16 randomized controlled trials显示文摘OBJECTIVE:This meta-analysis was performed to systematically assess the efficacy and safety of the Chinese herbal medicine Huangqi Guizhi Wuwu Decoction(HGWWD) for treating diabetic peripheral neuropathy.DATA SOURCES:Six electronic databases,including the Cochrane Library,MEDLINE database,Chinese Biomedical Database,Chinese National Knowledge Infrastructure Database,Chinese Science and Technique Journals Database,and the Wanfang Database,were search ed on the internet for randomized controlled trials published up until 1 December 2015.The search terms included 'Chinese herbal medicine','diabetic peripheral neuropathy' and 'randomized controlled trials' in Chinese and in English.DATA SELECTION:We included randomized controlled trials using HGWWD/modified HGWWD for the treatment group,without restriction for the control group.We assessed literature quality in accordance with the Cochrane Review Handbook.A random or a fixed effects model was used to analyze outcomes using Rev Man 5.2 software.OUTCOME MEASURES:The primary outcomes were changes in symptoms and nerve conduction velocities.The secondary outcomeswere fasting blood glucose and hemorheological indexes.RESULTS:Sixteen randomized controlled trials,with a total of 1,173 patients,were included.Meta-analysis revealed that the efficacy of HGWWD for diabetic peripheral neuropathy was significantly superior compared with the control treatment(i.e.,control group)(risk ratio = 0.36,95% confidence interval(CI):0.29–0.46,Z =8.33,P < 0.00001) Compared with the control group,there was an increase in median motor nerve conduction velocity(mean difference(MD) = 3.46,95%CI:1.88–5.04,Z = 4.30,P < 0.01) and median sensory nerve conduction velocity(MD = 3.30,95%CI:2.04–4.56,Z = 5.14,P < 0.01).There was also an increase in peroneal motor nerve conduction velocity(MD = 3.22,95%CI:2.45–3.98,Z = 8.21,P < 0.01) and peroneal sensory nerve conduction velocity(MD = 3.05,95%CI:2.01–4.09,Z = 5.75,P < 0.01) in the treatment groups.No significant difference in fasting blood glucose was found between the treatment groups and the control groups(MD =-0.12,95%CI:-0.42–0.19,Z = 0.76,P = 0.45).Plasma viscosity was significantly decreased after treatment(MD =-0.11,95%CI:-0.21 to-0.02,Z = 2.30,P = 0.02).No significant difference in fibrinogen was detectable(MD =-0.53,95%CI:-1.28–0.22,Z = 1.38,P = 0.17).Four trials reported that treatment groups experienced no adverse reactions.Adverse events were not mentioned in the other 12 trials.No trial reported the incidence of complications,quality of life outcomes,or health economics.CONCLUSION:HGWWD treatment improves diabetic neurologic symptoms and ameliorates nerve conduction velocities.Our study suggests that HGWWD may have significant therapeutic efficacy for the treatment of diabetic peripheral neuropathy.However,the methodological quality of the randomized controlled trials was generally low.Larger and better-designed randomized controlled trials are required to more reliably assess the clinical effectiveness of HGWWD.Bing Pang Tian-yu Zhao Lin-hua Zhao Fang Wan Ru Ye Qiang Zhou Feng Tian Xiao-lin Tong 2016Neural Regeneration Research2016,11,8:32
3Susceptibility to hepatocellular carcinoma associated with null genotypes of GSTM] and GSTT1显示文摘AIM In order to study the association betweenthe null genotypes of GSTM1 and GSTT1 and thegenetic susceptibility to hepatocellularcarcinoma(HCC).METHODS The genotypes of GSTM1 and GSTT1of 63 cases of HCC and 88 controls were detectedwith the multiple PCR technique.RESULTS The frequency of GSTM1 nullgenotype was 57.1% among the cases,and42.0% among the controls,the difference beingstatistically significant(χ~2=3.35,P=0.067),but χ~2 value approaching the significance level.The odds ratio was 1.84(95% Cl= 0.91-3.37).The frequency of GSTT1 non-null genotype was87.3% among the cases and 52.5% among thecontrols,the difference being statisticallysignificant(χ~2=11.42,P=0.0007274).The oddsratio was 4.13(95% Cl=1.64-10.70).According to the cross analysis,the GSTT1 non-null genotype was more closely associated withHCC than GSTM1 null genotype,and these twofactors play an approximate additive interactionin the occurrence of HCC.CONCLUSION The persons with GSTM1 nullgenotype and GSTT1 non-null genotype have theincreased risk to HCC.Jian Chao Bian Fu Min Shen Li Shen Tian Ru Wang Xiao Hong Wang Gong Chao Chen Jin Bing Wang Department of Epidemiology,Shanghai Medical University,Shanghai 200032,China Haimen Municipal Anti-Epidemic and Health Station,Haimen 226201,Jiangsu Province,China Qidong Institute for Liver Cancer,Qidong 226200,Jiangsu Province,China 2000World Journal of Gastroenterology2000,6,2:12
4Diet and gastric cancer:a case-control study in Fujian Province,China显示文摘NTRODUCTIONChangleandFuqingcitiesarelocatedinthesoutheasternpartofFujianProvince,Chinawithahighincidenceofgastriccancer.Howev...YE Wei Min 1, YI Ying Nan 1, LUO Ren Xia 2, ZHOU Tian Shu 3, LIN Ru Tao 1 and CHEN Gui Dong 3 1998World Journal of Gastroenterology1998,4,6:12
5Comparison of Long-term Outcomes in Patients with Premature Triple-vessel Coronary Disease Undergoing Three Different Treatment Strategies: A Prospective Cohort Study显示文摘Jing-Jing Xu Yin Zhang Lin Jiang Jian Tian Lei Song Zhan Gao Xin-Xing Feng Xue-Yan Zhao Yan-Yan Zhao Dong Wang Kai Sun Lian-Jun Xu Ru Liu Run-Lin Gao Bo Xu Lei Song Jin-Qing Yuan 2018Chinese Medical Journal2018,,1:10
6Challenges of 22 nm and beyond CMOS technology显示文摘It is predicted that CMOS technology will probably enter into 22 nm node around 2012. Scaling of CMOS logic technology from 32 to 22 nm node meets more critical issues and needs some significant changes of the technology, as well as integration of the advanced processes. This paper will review the key processing technologies which can be potentially integrated into 22 nm and beyond technology nodes, including double patterning technology with high NA water immersion lithography and EUV lithography, new device architectures, high K/metal gate (HK/MG) stack and integration technology, mobility enhancement technologies, source/drain engineering and advanced copper interconnect technology with ultra-low-k process.HUANG Ru WU HanMing KANG JinFeng XIAO DeYuan SHI XueLong AN Xia TIAN Yu WANG RunSheng ZHANG LiangLiang ZHANG Xing WANG YangYuan 2009Science in China(Series F)2009,52,9:8
7Transretinoic acid inhibits rats gastric epithelial dysplasia induced by N-methyi-N-nitro-N-nitrosoguanidine:influences on cell apoptosis and expression of its regulatory genes显示文摘INTRODUCTIONGastric epithelial dysplasia (GED) hypothetically is a straight-forward concept: dysplastic epithelium replacing the normal gastric epithelium of the stomach [1].In the stomach ,like any other segment of the gut ,it is defined as an unequivocal non-invasive epithelial change[2,3].The observation of gastric dysplasia as a cancerous lesion was recognized over a century ago ,but it is only after the advent of gastroscopy that its clinical significance has been stressed[4-7].Ru Tao Cui~1 Gan Cai~2 Zhao Bao Yin~(2*) Yong Cheng~2 Qiu Hong Yang~1 Tao Tian~(3#) ~1Liver Center,Beijing Friendship Hospital Affiliated to CapitalUniversity of Medical Sciences~2Department of Gastroenterology,Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai China and Department of Pathophysiology.Shanghai Medical University.Shanghai,China ~3Pathological Department,Shanghai Medical University (?)Now working at UCLA,USA ~#Now working at University of Michigan,USADr.Ru Tao Cui graduated and got the bachelor degree from Shandong University of Traditional Chinese Medicine in 1994,got doctor degree from Shanghai University of Traditional Chinese Medicine in 2000,now studying as a postdoc,majoring gastroenterology,having 29 papers published. 2001World Journal of Gastroenterology2001,7,3:8
8Efficacy and safety of low-dose interleukin-2 in combination with methotrexate in patients with active rheumatoid arthritis:a randomized,double-blind,placebo-controlled phase 2 trial显示文摘Rheumatoid arthritis(RA)is an aggressive autoimmune arthritis,and current therapies remain unsatisfactory due to low remission rate and substantially adverse effects.Low-dose interleukin-2(Ld-IL2)is potentially a therapeutic approach to further improve the disease.This randomized,double-blind,placebo-controlled trial was undertaken to evaluate the efficacy and safety of Ld-IL2 in patients with active RA.Patients were randomly assigned(1:1)to receive Ld-IL2,defined as a dose of 1 million IU,or placebo in a 12-week trial with a 12-week follow-up.Three cycles of Ld-IL2 or placebo were administered subcutaneously every other day for 2 weeks(a total of 7 doses),followed by a 2-week break.All patients received a stable dose of methotrexate(MTX).The primary outcomes were the proportion of patients achieving the ACR20,DAS28-ESR<2.6,and the change from baseline in CDAI or SDAI at week 24.Secondary endpoints included other clinical responses and safety.The primary outcomes were achieved in the perprotocol population.The improvements from baseline in CDAI and SDAI were significantly greater across time points for the LdIL2+MTX group(n=17)than for the placebo+MTX group(n=23)(P=0.018 and P=0.015,respectively).More patients achieved ACR20 response in the Ld-IL2+MTX group than those in the placebo+MTX group at week 12(70.6%vs 43.5%)and at week 24(76.5%vs 56.5%)(P=0.014).In addition,low Treg and high IL-21 were associated with good responses to Ld-IL2.Ld-IL-2 treatment was well-tolerated in this study.These results suggested that Ld-IL2 was effective and safe in RA.ClinicalTrials.gov number:NCT 02467504.Xiaoying Zhang Miao Miao Ruijun Zhang Xu Liu Xiaozhen Zhao Miao Shao Tian Liu Yuebo Jin Jiali Chen Huixin Liu Xia Zhang Yun Li Yunshan Zhou Yue Yang Ru Li Haihong Yao Yanying Liu Chun Li Yuhui Li Limin Ren Yin Su Xiaolin Sun Jing He Zhanguo Li 2022Signal Transduction and Targeted Therapy2022,7,4:7
9Structural analysis of asparaginyl endopeptidase reveals the activation mechanism and a reversible intermediate maturation stage显示文摘Asparaginyl endopeptidase (AEP ) 是有为在 P1 地点的天门冬素残余的偏爱的 endo/lysosomal 半胱氨酸 endopeptidase 并且在像使用费的受体 3/7/9 的成熟起一个重要作用。AEP 被知道为催化激活在酸的 pH 经历 autoproteolytic 成熟。这里,我们描述 AEP 酶原的水晶结构和 AEP 的成熟形式。在 AEP 和 caspases 之间的结构的比较在关键残余的作文并且在催化机制揭示了类似。Mutagenesis 研究作为为肽底层的劈开是必要的残余识别了 N44, R46, H150, E189, C191, S217/S218 和 D233。在成熟期间, AEP 的帽子领域的 autoproteolytic 劈开在核心领域上开创存取到活跃地点。出人意料地,一个中间的 autoproteolytic 成熟阶段被发现在近似 pH 4.5 在哪个部分激活的 AEP 能被颠倒回到它的酶原形式。这个唯一的特征被 AEP pH4.5 (AEP 在 pH 被成熟 4.5 并且在 pH 结晶 8.5 ) ,在哪个破肽契约被重新绑扎,结构被转变回到它的酶原形式。另外, AEP 禁止者 cystatin C 能被充分激活的 AEP 消化,但是不能被激活的组织蛋白酶消化。因此,我们第一次证明 cystatins 可以为活跃地点通过底层竞争调整 AEP 的活动。Lixia Zhao Tian Hua Christopher Crowley Heng Ru Xiangmin Ni Neil Shaw Lianying Jiao Wei Ding Lu Qu Li-Wei Hung Wei Huang Lei Liu Keqiang Ye Songying Ouyang Genhong Cheng Zhi-Jie Liu 2014Cell Research2014,24,3:6
10Neural Mechanisms of Mental Fatigue Revisited: New Insights from the Brain Connectome显示文摘Maintaining sustained attention during a prolonged cognitive task often comes at a cost: high levels of mental fatigue. Heuristically, mental fatigue refers to a feeling of tiredness or exhaustion, and a disengagement from the task at hand;it manifests as impaired cognitive and behavioral performance. In order to effectively reduce the undesirable yet preventable consequences of mental fatigue in many real-world workspaces, a better understanding of the underlying neural mechanisms is needed, and continuous efforts have been devoted to this topic. In comparison with conventional univariate approaches, which are widely utilized in fatigue studies, convergent evidence has shown that multivariate functional connectivity analysis may lead to richer information about mental fatigue. In fact, mental fatigue is increasingly thought to be related to the deviated reorganization of functional connectivity among brain regions in recent studies. In addition, graph theoretical analysis has shed new light on quantitatively assessing the reorganization of the brain functional networks that are modulated by mental fatigue. This review article begins with a brief introduction to neuroimaging studies on mental fatigue and the brain connectome, followed by a thorough overview of connectome studies on mental fatigue. Although only a limited number of studies have been published thus far, it is believed that the brain connectome can be a useful approach not only for the elucidation of underlying neural mechanisms in the nascent field of neuroergonomics, but also for the automatic detection and classification of mental fatigue in order to address the prevention of fatigue-related human error in the near future.Peng Qi Hua Ru Lingyun Gao Xiaobing Zhang Tianshu Zhou Yu Tian Nitish Thakor Anastasios Bezerianos Jinsong Li Yu Sun 2019Engineering2019,5,2:5
11Immunotherapy of tumors with recombinant adenovirus encoding macrophage inflammatory protein 3β induces tumor-specific immune response in immunocompetent tumor-bearing mice显示文摘Jian-mei HOU Xia ZHAO Ling TIAN Gang LI Ru ZHANG Bing YAO Hong-xin DENG Jin-liang YANG Yu-quan WEI 2009Acta Pharmacologica Sinica2009,30,3:4
12On the temperature characteristics of phase measurement in homodyne fiber interferometer显示文摘Different from the traditional way of using piezoelectric (PZT) phase shifter to measure phase difference,a new method is designed to calculate it between signals in the two arms of a homodyne fiber interferometer. A simple homodyne fiber interferometer system is then established to measure the interference photocurrent and the photocurrents from the two fiber arms generated by the signal power on a temperature control plat. The homodyne fiber interferometer system is composed of fiber and sensitive to the variation of temperature. Thus,is necessary to study the temperature characteristics in the phase measurement of homodyne fiber interferometer. The experimental results show that the variation of the phase difference of signals in the two fiber arms is proportional to the variation of temperature.GAO Bo,TIAN Xiao-jian ,WU Ge,RU Yu-xing,WANG Qing College of Electronic Science and Engineering ,State Key Laboratory of Integrated Optoelectronics,Jilin University ,Changchun 130012,China 2010The Journal of China Universities of Posts and Telecommunications2010,17,2:3
13A new prenylated arylbenzofuran derivative from Morus alba L.显示文摘2-[3,5-Di-O-β-D-glucosyl-4-(3-methylbut-2-enyl)phenyl]benzofuran-6-ol,a new prenylated arylbenzofuran derivative was isolated from Morus alba L.Its structure was elucidated by various spectroscopic methods including MS,~1H NMR,^(13)C NMR,DEPT,~1H-~1HCOSY,HMQC and HMBC.Tian, Hai Ying He, Xi Zeng, Guang Yao Tan, Jian Bin Shuang, Fu Liu, Guo Ru Tan, Gui Shan Zhou, Ying Jun 2010Chinese Chemical Letters2010,21,3:3
14Optimal Waist Circumference Cut-off values for Identifying Metabolic Risk Factors in Middle-aged and Elderly Subjects in Shandong Province of China显示文摘Objective To study the optimal waist circumference(WC) cut-off values for identifying metabolic risk factors in middle-aged and elderly subjects in Shandong Province of China. Methods A total of 2 873 men and 5 559 women were included in this cross-sectional study. Metabolic syndrome(MetS) was diagnosed according to the definition of Chinese Diabetes Society in 2004. The relation between WC and MetS was analyzed by multivariate logistic regression analysis. The optimal WC cut-off values were identified using the area under the ROC curve and the different diagnostic criteria for central obesity were compared. Results The WC was the risk factor for MetS independent of BMI, blood glucose, blood lipid, and blood pressure. The optimal WC cut-off value was 83.8 cm and 91.1 cm for identifying MetS in women and men, respectively. Compared with 80 cm and 85 cm for women and men, 85 cm and 90 cm had a higher Youden index for identifying all metabolic risk factors and MetS in women and men. Conclusion The appropriate WC cut-off value is 85 cm and 90 cm for identifying central obesity and MetS in women and men in Shandong Province of China.HOU Xin Guo WANG Chuan MA Ze Qiang YANG Wei Fang WANG Ji Xiang LI Cheng Qiao WANG Yu Lian LIU Shu Min Hu Xiu Ping ZHANG Xiu Ping JIANG Mei WANG Wei Qing NING Guang ZHENG Hui Zhen MA Ai Xia SUN Yu SONG Jun LIN Peng LIANG Kai LIU Fu Qiang LI Wen Juan XIAO Juan GONG Lei WANG Mei Jian LIU Ji Dong YAN Fei YANG Jun Peng WANG Ling Shu TIAN Meng ZHAO Ru Xing JIANG Ling CHEN Li 2014Biomedical and Environmental Sciences2014,27,5:3
15The Synthesis of Hexamethyl Ether of Salvianolic Acid A Benzyl Ester显示文摘TheSynthesisofHexamethylEtherofSalvianolicAcidABenzylEsterYanZHUANG;ZongRuGUO;GuangZhongYANG;XiaoTianLIANG(InstituteofMateria...Yan ZHUANG Zong Ru GUO Guang Zhong YANG Xiao Tian LIANG(Institute of Materia Medica.Chinese Academy of Medical Sciences Peking Union Medical College, 1 Xian Nong Tan Street, Beijing 100050) 1996Chinese Chemical Letters1996,7,10:2
16Adsorption desulfurization of model gasoline by metal–organic framework Ni3(BTC)2显示文摘This work presented the synthesis of Ni-based metal-organic framework material with a paddle-wheel structure Ni3(BTC)2 (Ni-BTC) and its application in thiophene (TP) adsorption from gasoline distillate by batch method. Adsorption isotherms of TP, cyclohexene, and toluene in cyclohexane onto Ni-BTC were conducted at 298-308 K to interpret the different effect of cyclohexene and toluene on TP adsorption. The results showed that, compared w让h cyclohexene, toluene addition in model gasoline led to a more evident decline in sulfur capacity of Ni-BTC, which is opposite to isostructural HKUST-1. The adsorption isotherms of TP, cyclohexene and toluene fit Langmuir model, S-type model and Temkin model well, respectively, indicating that the adsorption mechanisms of TP and the two competitors are different from one another The adsorption capacities on Ni-BTC followed the order of cyclohexene < toluene < TP at the same equilibrium concentrations, implying the order of the adsorption affinities, which is in good agreement with the different extent of influence by the two competitors. The enthalpy of TP adsorption on Ni-BTC was estimated to be -80.01 kj/mol, almost twice that on HKUST-1. The poor reusability of Ni-BTC in batch experiment, which is owing to its sensitivity to the air, can be prevented from regenerating used Ni-BTC in fixed-bed reactor by N2 flow. The difference between Ni-BTC and HKUST-1 in maximum adsorption capacity (q0),△H of TP adsorption, and stability demonstrates that the central metal in isostructural MOFs plays a key role in adjusting the desulfurization performance, which may open up a potential avenue for the development of MOF-based adsorbents with superior desulfurization performance.Fuping Tian Qiaofeng Ru Chenxia Qiao Xin Sun Cuiying Jia Yu Wang Yifu Zhang 2019Journal of Energy Chemistry2019,28,5:2
17Serum Calcium Level is Associated with Brachial-ankle Pulse Wave Velocity in Middle-aged and Elderly Chinese显示文摘Objective To study the relation between serum calcium level and elevated BaPWV in Chinese subjects.Methods The relation between serum calcium level and elevated BaPWV was studied in 9 615subjects.The mean value of left and right BaPWV was analyzed.BaPWV was defined as high when it was?1 752.5 cm/s(the upper quartile)either side.Results The BaPWV and its elevated percentage progressively increased across the quartiles of the serum calcium level(P<0.05).The prevalence of elevated BaPWV was significantly higher in subjects of the second,third and highest quartiles than in those of the lowest quartile(26.9%,28.4%,and 33.2%vs23.7%,P=0.0116,P=0.0004,and P<0.0001).Logistic regression analysis revealed that the risk of elevated BaPWV was 1.32-fold higher in subjects of the highest quartile than in those of the lowest quartile(OR=1.32,95%CI:1.08-1.60).Conclusion The elevated serum calcium level is related to an elevated BaPWV and a higher risk of arterial stiffness,independent of conventional risk factors,in middle-aged and elderly Chinese subjects.DENG Xin Ru ZHANG Yin Fei WANG Tian Ge XU Bai Hui SUN Ji Chao ZHAO Lie Bin XU Min CHEN Yu Hong WANG Wei Qing BI Yu Fang LU Jie Li 2014Biomedical and Environmental Sciences2014,27,8:2
18Inverted U-Shaped Associations between Glycemic Indices and Serum Uric Acid Levels in the General Chinese Population:Findings from the China Cardiometabolic Disease and Cancer Cohort(4C)Study显示文摘Objective The relationship between serum uric acid(SUA)levels and glycemic indices,including plasma glucose(FPG),2-hour postload glucose(2 h-PG),and glycated hemoglobin(HbA1 c),remains inconclusive.We aimed to explore the associations between glycemic indices and SUA levels in the general Chinese population.Methods The current study was a cross-sectional analysis using the first follow-up survey data from The China Cardiometabolic Disease and Cancer Cohort Study.A total of 105,922 community-dwelling adults aged≥40 years underwent the oral glucose tolerance test and uric acid assessment.The nonlinear relationships between glycemic indices and SUA levels were explored using generalized additive models.Results A total of 30,941 men and 62,361 women were eligible for the current analysis.Generalized additive models verified the inverted U-shaped association between glycemic indices and SUA levels,but with different inflection points in men and women.The thresholds for FPG,2 h-PG,and HbA1 c for men and women were 6.5/8.0 mmol/L,11.0/14.0 mmol/L,and 6.1/6.5,respectively(SUA levels increased with increasing glycemic indices before the inflection points and then eventually decreased with further increases in the glycemic indices).Conclusion An inverted U-shaped association was observed between major glycemic indices and uric acid levels in both sexes,while the inflection points were reached earlier in men than in women.ZHU Yuan Yue ZHENG Rui Zhi WANG Gui Xia CHEN Li SHI Li Xin SU Qing XU Min XU Yu CHEN Yu Hong YU Xue Feng YAN Li WANG Tian Ge ZHAO Zhi Yun QIN Gui Jun WAN Qin CHEN Gang GAO Zheng Nan SHEN Fei Xia LUO Zuo Jie QIN Ying Fen HUO Ya Nan LI Qiang YE Zhen ZHANG Yin Fei LIU Chao WANG You Min WU Sheng Li YANG Tao DENG Hua Cong ZHAO Jia Jun CHEN Lu Lu MU Yi Ming TANG Xu Lei HU Ru Ying WANG Wei Qing NING Guang LI Mian LU Jie Li BI Yu Fang 2021Biomedical and Environmental Sciences2021,34,1:2
19Lithium intercalation mechanism for β-SnSb in Sn-Sb thin films显示文摘Based on the first-principles plane wave pseudo-potential method, the electronic structure and electrochemical performance of LixSn4Sb4 (x=2, 4, 6, and 8) and LixSn12-xSb4 (x=9, 10, 11, and 12) phases were calculated. A Sn-Sb thin film on a Cu foil was also prepared by radio frequency magnetron sputtering. The surface morphology, composition, and lithium intercalation/extraction behavior of the fabricated film were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and cyclic voltammetry (CV). Lithium atoms can easily insert into and extract out of the β-SnSb cell due to the low lithium intercalation formation energy. It is found that lithium atoms first occupy the interstitial sites, and then Sn atoms at the lattice positions are replaced by excessive lithium. The dissociative Sn atoms continue to produce different Li-Sn phases, which will affect the electrode stability and lead to the undesirable effect due to their large volume expansion ratio. The calculated lithium intercalation potential is stable at about 0.7 V, which is consistent with the experimental result.Qiang Ru Qin Tian She-jun Hu Ling-zhi Zhao 2011International Journal of Minerals,Metallurgy and Materials2011,18,2:2
20Population dynamics and habitat use of the Black-necked Crane (Grus nigricollis) in the Yarlung Tsangpo River basin, Tibet, China显示文摘Background:The Black-necked Crane (Grus nigricollis)is an internationally threatened crane living on the plateau, mainly in winter, in the Yarlung Tsangpo River basin in Tibet,western China. In the past five years,some economic development projects have been conducted in this area,posing potential threats to the wintering populations of the cranes and their habitats. Therefore, the current population dynamics of wintering Black-necked Cranes and habitat suitability in the Yarlung Tsangpo River basin were investigated. Methods: Twenty counties were surveyed using the line transect method in December 2017 and January 2018, and we recorded the location,flock size,number of individuals,habitat types and presence of human disturbance in which they occurred.We compared the results from the middle wintering period in this survey with those from 2014. Results: The highest number of cranes recorded was 8291,and the results showed that the cranes were mainly distributed in Lhaze, Namling, Samzhubze, and Lhunzub.A total of 577 and 495 flocks were recorded in the early and middle wintering periods, respectively. In the early wintering period,there were signi ficant differences in the number of individuals across the di fferent habitats,with crop stubble land and plowed land representing more than 30% of the total habitat utilization.In the middle wintering period, there were also signi ficant differences in the number of individuals, and the utilization of crop stubble land represented over 60% of the total. Conclusions: Wintering Black-necked Cranes mainly fed on spilled grains in stubble habitat after harvest. In the middle wintering period, some of the farmlands were plowed and irrigated,which resulted in food shortages in these areas,and the cranes tended to gather in mixed flocks of large size instead of as a single family.There were still considerable regional wintering populations decreases in Quxu,Nedong,and Sakya in 2018 compared with 2014,and these decreases were mainly due to some recently emerging threats,including farmlands being converted into areas of greenhouse cultivation,highway and railway construction, river dredging,the rapid development of the manufacturing and mining industries,and the lack of protection of important wintering sites.Ru Jia Tian Ma Fengjiang Zhang Guogang Zhang Dongping Liu Jun Lu 2019Avian Research2019,10,3:2
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