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1Modeling study of regional severe hazes over mid-eastern China in January 2013 and its implications on pollution prevention and control显示文摘The Nested Air Quality Prediction Model System(NAQPMS)was used to investigate the temporal and spatial variations of PM2.5over tropospheric central eastern China in January 2013.The impact of regional transport and its implications on pollution prevention and control were also examined.Comparison between simulated and observed PM2.5showed NAQPMS was able to reproduce the evolution of PM2.5during heavy haze episodes.The results indicated that regional transport of PM2.5played an important role in regional haze episodes in the city cluster including Hebei,Beijing and Tianjin(HBT).The cross-city clusters transport outside HBT and transport among cities inside HBT contributed 20%–35%and 26%–35%of PM2.5as compared with local emission,in HBT respectively.To meet the Air Quality Standards for Grade II,90%,90%and65%of emissions would have to be cut down in Hebei,Tianjin and Beijing,if non-control strategy was taken in the surrounding city clusters of HBT.This implicated that control of emissions in one city cluster is not sufficient to reduce regional haze events,and joint efforts among city clusters are essential.Besides regional transports,two-way feedback between boundary-layer evolution and PM2.5also significantly contributed to the formation of heavy hazes,which contributed 30%of monthly average PM2.5concentration in HBT.WANG ZiFa LI Jie WANG Zhe YANG WenYi TANG Xiao GE BaoZhu YAN PinZhong ZHU LiLi CHEN XueShun CHEN HuanSheng WAND Wei LI JianJun LIU Bing WANG XiaoYan WAND Wei ZHAO YiLin LU Ning SU DeBin 2014Science China Earth Sciences2014,57,1:106
2Stable classi?cation with limited sample: transferring a 30-m resolution sample set collected in 2015 to mapping 10-m resolution global land cover in 2017显示文摘As the world strives to reduce the impact of population growth, urbanization, agricultural expansion, and climate change on food security, energy and water shortage, resource over-exploration, biodiversity loss, environmental pollution, and ultimately human health, timely and higher resolution land cover information is urgently needed to achieve the sustainable development goals of the United Nations.Peng Gong Han Liu Meinan Zhang Congcong Li Jie Wang Huabing Huang Nicholas Clinton Luyan Ji Wenyu Li Yuqi Bai Bin Chen Bing Xu Zhiliang Zhu Cui Yuan Hoi Ping Suen Jing Guo Nan Xu Weijia Li Yuanyuan Zhao Jun Yang Chaoqing Yu Xi Wang Haohuan Fu Le Yu Iryna Dronova Fengming Hui Xiao Cheng Xueli Shi Fengjin Xiao Qiufeng Liu Lianchun Song 2019Science Bulletin2019,64,6:166
35-methylcytosine promotes mRNA export--NSUN2 as the methyltransferase and ALYREF as an m5C reader显示文摘Yang, Xin Yang, Ying Sun, Bao-Fa Chen, Yu-Sheng Xu, Jia-Wei Lai, Wei-Yi Li, Ang Wang, Xing Bhattarai, Devi Prasad Xiao, Wen Sun, Hui-Ying Zhu, Qin Ma, Hai-Li Adhikari, Samir Sun, Min Hao, Ya-Juan Zhang, Bing Huang, Chun-Min Huang, Niu Jiang, Gui-Bin Zhao, Yong-Liang Wang, Hai-Lin Sun, Ying-Pu Yang, Yun-Gui 2017Cell Research2017,27,5:62
42018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
5XA23 Is an Executor R Protein and Confers Broad-Spectrum Disease Resistance in Rice显示文摘Chunlian Wang Xiaoping Zhang Yinglun Fan Ying Gao Qinlong Zhu Chongke Zheng Tengfei Qin Yanqiang Li Jinying Che Mingwei Zhang Bing Yang Yaoguang Liu Kaijun Zhao 2015Molecular Plant2015,8,2:55
6Effects of Long-Term Combined Application of Organic and Mineral Fertilizers on Microbial Biomass,Soil Enzyme Activities and Soil Fertility显示文摘土壤健康为陆上的生态系统的持续发展是重要的。在这篇论文,我们学习了在土壤质量和土壤之间的关系微生物引起的性质例如玷污微生物引起的生物资源和土壤酶活动以便说明功能作为土壤健康的简历指示物玷污微生物引起的性质。在这研究,微生物引起的生物资源 C 和 N 内容(Cmic 与 Nmic ) 。有不同化肥政体的土壤酶活动,和土壤肥力在 Changping 县在娼妓 Fluvo-aquic 土壤基于一个 15 年的长期的化肥实验被执行,中国北京。在这个地点, 7 个不同处理在 1991 被建立。他们也不在小麦玉米旋转正在收到化肥(CK ) 。矿质肥料(NPK ) 。有合并的麦秸(NPKW+) 的矿质肥料,有合并的增长麦秸(NPKW+) 的矿质肥料,加猪粪肥(NPKM ) 的矿质肥料,加增长的猪粪肥(NPKM+) 的矿质肥料或有合并的玉米秸秆(NPKS ) 的矿质肥料。在不同授精处理, Cmic 从 96.49 ~ 500.12 mg kg 变化了 ? 1,并且 Nmic 从 35.89 ~ 101.82 mg kg 变化了 ? 1。与 CK 相比,另外的处理增加了 Cmic 与 Nmic, Cmic/Corg (器官的 C ) 比率, Cmic/Nmic,脲酶活动,土壤有机物(SOM ) 。土壤总氮(STN ) ,和土壤总数磷(STP ) 。在有化肥输入 NPKM+ 的处理的所有这些性质最高。同时,有有机肥料或庄稼稻草的矿质肥料的长期的联合申请能显著地减少在 Fluvo-aquic 土壤(在这试验性的土壤的在 8.00 附近的 pH ) 的土壤 pH。一些土壤微生物引起的性质(Cmic/Nmic。脲酶活动) 断然与土壤营养素被相关。Cmic/Nmic 显著地与 SOM 和 STN 内容被相关。在过氧化氢酶活动和土壤营养素之间的关联不是重要的。除了过氧化氢酶活动,另外,在这个实验的土壤 pH 否定地与土壤被相关微生物引起的性质。在结论,微生物引起的性质反映的土壤土壤质量并且这样变化能被用作土壤健康的简历指示物。LI Juan ZHAO Bing-qiang LI Xiu-ying JIANG Rui-bo So Hwat Bing 2008Agricultural Sciences in China2008,7,3:49
7Transplantation of UC-MSCs on collagen scaffold activates follicles in dormant ovaries of POF patients with long history of infertility显示文摘Premature ovarian failure(POF) is a refractory disease for clinical treatment with the goal of restoring fertility. In this study,umbilical cord mesenchymal stem cells on a collagen scaffold(collagen/UC-MSCs) can activate primordial follicles in vitro via phosphorylation of FOXO3 a and FOXO1. Transplantation of collagen/UC-MSCs to the ovaries of POF patients rescued overall ovarian function, evidenced by elevated estradiol concentrations, improved follicular development, and increased number of antral follicles. Successful clinical pregnancy was achieved in women with POF after transplantation of collagen/UC-MSCs or UC-MSCs. In summary, collagen/UC-MSC transplantation may provide an effective treatment for POF.Lijun Ding Guijun Yan Bin Wang Lu Xu Yan Gu Tong Ru Xiaoying Cui Lei Lei Jingyu Liu Xiaoqiang Sheng Bin Wang Chunxue Zhang Yanjun Yang Ruiwei Jiang Jianjun Zhou Na Kong Feifei Lu Huaijun Zhou Yannan Zhao Bing Chen Yali Hu Jianwu Dai Haixiang Sun 2018Science China(Life Sciences)2018,61,12:43
8Clinical efficacy of tolvaptan for treatment of refractory ascites in liver cirrhosis patients显示文摘AIM: To evaluate the efficacy and safety of tolvaptan to treat refractory ascites in decompensated liver cirrhosis patients with or without further complications, such as hepatorenal syndrome and/or hepatocellular carcinoma.METHODS: Thirty-nine patients(mean age 55 years, males: 32) with decompensated liver cirrhosis and refractory ascites were enrolled. All patients received a combination of tolvaptan(15 mg/d for 5-14 d) and diuretics(40-80 mg/d of furosemide and 80-160 mg/d of spironolactone). The etiology of cirrhosis included hepatitis B(69.2%), hepatitis C(7.7%) and alcohol-in-duced(23.1%). Changes in the urine excretion volume, abdominal circumference and edema were assessed. The serum sodium levels were also measured, and adverse events were recorded. A follow-up assessment was conducted 1 mo after treatment with tolvaptan.RESULTS: Tolvaptan increased the mean urine excretion volume(1969.2 ± 355.55 mL vs 3410.3 ± 974.1 mL, P < 0.001), and 89.7% of patients showed improvements in their ascites, 46.2% of whom showed significant improvements. The overall efficacy of tolvaptan in all patients was 89.7%; the efficacies in patients with hepatocellular carcinoma and hepatorenal syndrome were 84.2% and 77.8%, respectively. The incidence of hyponatremia was 53.8%. In patients with hyponatremia, the serum sodium levels increased after tolvaptan treatment(from 128.1 ± 4.22 mEq/L vs 133.1 ± 3.8 mEq/L, P < 0.001). Only mild drug-related adverse events, including thirst and dry mouth, were observed. CONCLUSION: Tolvaptan is a promising aquaretic for the treatment of refractory ascites in patients with decompensated liver cirrhosis.Xin Zhang Shu-Zhen Wang Jun-Fu Zheng Wen-Min Zhao Peng Li Chun-Lei Fan Bing Li Pei-Ling Dong Lei Li Hui-Guo Ding 2014World Journal of Gastroenterology2014,20,32:36
9Huangqi 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
10A Comparative Analysis of Environmental Quality Assessment Methods for Heavy Metal-Contaminated Soils显示文摘Four assessment methods(two pollution indexes and two fuzzy mathematical models) were employed to investigate the environmental quality of four soils around a ferroalloy plant in Nanjing City.Environmental quality was assessed as class IV(moderately polluted) for each soil with single-factor index method,and was identified to be classes IV,III(slightly polluted),III,and III for soils A,B,C,and D,respectively,with the comprehensive index model.In comparison with the single-factor index method,the comprehensive index model concerned both dominant parameter and average contribution of all factors to the integrated environmental quality.Using the two fuzzy mathematical methods(single-factor deciding and weighted average models),the environmental risks were determined to be classes IV,III,II(clean),and II for soils A,B,C,and D,respectively.However,divergence of the membership degree to each pollution class still occurred between the two methods.In fuzzy mathematical methods,membership functions were used to describe the limits between different pollution degrees,and different weights were allocated for the factors according to pollution contribution.Introduction of membership degree and weight of each factor to fuzzy mathematical models made the methods more reasonable in the field of environmental risk assessment.LI Wei-Xin ZHANG Xu-Xiang WU Bing SUN Shi-Lei CHEN Yan-Song PAN Wen-Yang ZHAO Da-Yong CHENG Shu-Pei 2008Pedosphere2008,18,3:29
11Risk factors for intracranial aneurysm in a Chinese ethnic population显示文摘背景 Intracranial 动脉瘤( IAN )在一根大脑动脉上是一个耸出的水泡或囊汽球外面随着时间的过去,它可以导致自发的 subarachnoid 出血( SAH ),最终,残疾和 mortality.Current 研究显示疾病由于多重原因,包括环境因素和血容器的各种各样的先天的畸形。除了先天的倾向,象性别,年龄,高血压,和动脉粥样硬化那样的各种各样的高风险的因素涉及 intracranial 动脉瘤的形成。这研究的目的是调查在中国汉种族 patients.Methods 与分散的 intracranial 动脉瘤的形成联系的风险因素有 intracranial 动脉瘤的 251 个病人和有另外的服的疾病(控制组) 的 338 个病人的一个总数在这研究被注册。单个因素和逻辑回归模型被用来与年龄分析 intracranial 动脉瘤的协会;性别;香烟吸烟;酒精或可卡因消费;高血压,冠的动脉疾病,糖尿病 mellitus 和继承结缔组织疾病的历史;并且 fasting 血的层次葡萄糖和血脂肪。数据表示了同样吝啬的敤摡攠摮吗?GU Yu-xiang CHEN Xian-cheng SONG Dong-lei LENG Bing ZHAO Fan 2006Chinese Medical Journal2006,,16:28
12Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure显示文摘Objective To analyze the effects of long-term microwave exposure on hippocampal structure and function in the rat.Methods Experiments were performed on 184 male Wistar rats(three exposure groups and a sham group).Microwaves were applied daily for 6 min over 1 month at average power densities of 2.5,5,and 10 mW/cm2.Learning and memory abilities were assessed by Morris water maze.High performance liquid chromatography was used to detect neurotransmitter concentrations in the hippocampus.Hippocampal structures were observed by histopathological analysis.Results Following long-term microwave exposure there was a significant decrease in learning and memory activity in the 7 d,14 d,and 1 m in all three microwave exposure groups.Neurotransmitter concentrations of four amino acids(glutamate,aspartic acid,glycine,and gamma-aminobutyric acid) in hippocampus were increased in the 2.5 and 5 mW/cm2 groups and decreased in the 10 mW/cm2 group.There was evidence of neuronal degeneration and enlarged perivascular spaces in the hippocampus in the microwave exposure groups.Further,mitochondria became swollen and cristae were disordered.The rough endoplasmic reticulum exhibited sacculated distension and there was a decrease in the quantity of synaptic vesicles.Conclusion These data suggest that the hippocampus can be injured by long-term microwave exposure,which might result in impairment of cognitive function due to neurotransmitter disruption.ZHAO Li PENG Rui Yun WANG Shui Ming WANG Li Feng GAO Ya Bing DONG Ji LI Xiang SU Zhen Tao 2012Biomedical and Environmental Sciences2012,25,2:27
13An emerging hemorrhagic fever in China caused by a novel bunyavirus SFTSV显示文摘Severe fever with thrombocytopenia syndrome(SFTS) is an emerging hemorrhagic fever in rural areas of China and is caused by a new bunyavirus,SFTSV,named after the disease.The transmission vectors and animal hosts of SFTSV are unclear.Ticks are the most likely transmission vectors and domestic animals,including goats,dogs,and cattle,are potential amplifying hosts of SFTSV.The clinical symptoms of SFTS are nonspecific,but major symptoms include fever,gastrointestinal symptoms,myalgia,dizziness,joint pain,chills,and regional lymphadenopathy.The most common abnormalities in laboratory test results are thrombocytopenia(95%),leukocytopenia(86%),and elevated levels of serum alanine aminotransferase,aspartate aminotransferase,creatine kinase,and lactate dehydrogenase.The fatality rate for SFTS is 12% on average,and the annual incidence of the disease is approximately five per 100000 of the rural population.ZHANG XiaoShuang LIU Yan ZHAO Li LI Bing YU Hao WEN HongLing YU Xue-Jie 2013Science China(Life Sciences)2013,56,8:28
14DNA-based vaccination induces humoral and cellular immune responses against hepatitis B virus surface antigen in mice without activation of Cmyc显示文摘AIM To develop a safe and effective DNAvaccine for inducing humoral and cellularimmunological responses against hepatitis Bvirus surface antigen(HBsAg).METHODS BALB/c mice were inoculated withNV-HB/s,a recombinant plasmid that had beeninserted S gene of hepatitis B virus genome andcould express HBsAg in eukaryotes.HBsAgexpression was measured by ABC immunohis-tochemical assay,generation of anti-HBs byELISA and cytotoxic T lymphocyte(CTL),byMTT method,existence of vaccine DNA bySouthern blot hybridization and activation ofoncogene C-myc by in situ hybridization,RESULTS With NV-HB/s vaccination byintramuscular injection,anti-HBs was initiallypositive 2 weeks after inoculation while all micetested were HBsAg positive in the muscles.Thetiters and seroconversion rate of anti-HBs weresteadily increasing as time went on and weredose-dependent.All the mice inoculated with100 μg NV-HB/s were anti-HBs positive onemonth after inoculation,the titer was 1:1024 ormore.The humoral immune response was similarinduced by either intramuscular or intradermalinjection.CTL activities were much stronger(45.26%)in NV-HB/s DNA immunized mice as compared with those(only 6%)in plasma-derived HBsAg vaccine immunized mice.Twomonths after inoculation,all muscle sampleswere positive by Southern-blot hybridization forNV.HB/s DNA detection,but decreased to 25%and all were undetectable by in situhybridization after 6 months.No oncogene C-myc activation was found in the muscle ofinoculation site.CONCLUSION NV-HB/s could generatehumoral and cellular immunological responsesagainst HBsAg that had been safely expressed insitu by NV-HB/s vaccination.Lian San Zhao Shan Qin Tao You Zhou Hong Tang Li Liu Bing Jun Lei 2000World Journal of Gastroenterology2000,6,2:24
15Transduction of Fas gene or Bcl-2 antisense RNA sensitizes cultured drug resistant gastric cancer cells to chemotherapeutic drugs显示文摘INTRODUCTIONChemotherapyisoneofthemajormethodsintumortreatment,butitoftendoesnotworkduetomultidrugresistance(MDR).Recentstudi...XIAO Bing, SHI Yong Quan, ZHAO Yan Qiu, YOU Han, WANG Zuo You, LIU Xian Ling, YIN Fang, QIAO Tai Dong and FAN Dai Ming 1998World Journal of Gastroenterology1998,4,5:24
16Research Progress in the Use of Drugs for Breast Cancer Targeted Therapy显示文摘In recent years,many significant advances have been made on molecular target therapy to aim directly at epidermal growth factor receptors and vascular endothelial growth factor in breast cancers.Clinical studies of such agents as trastuzumab,lapatinib,erlotinib and bevacituzumab have been widely conducted.This paper will review the recent research progress related to targeted therapy.Shun 'e Yang Bing Zhao 2008Chinese Journal of Clinical Oncology2008,5,5:22
17Bispectral index monitoring prevent awareness during total intravenous anesthesia: a prospective, randomized, double-blinded, multi-center controlled trial显示文摘背景了解是一般 anesthesia.In 中国的严肃的复杂并发症, intraoperative 了解的发生在经历全部的静脉内的麻醉( TIVA )的病人是 1 .In 这研究,我们比较了在指导的 Bispectral 索引(二度)和平淡的 TIVA 协议之间的了解的发生并且在阻止 awareness.Methods A 上评估了二度的效果未来,使随机化, 双blinded , multicenter 控制了试用 performed.Patients ( 18 岁)正在经历 TIVA 随机ZHANG Chen XU Liang MA Ya-qun SUN Yan-xia LI Yan-hong ZHANG Liang FENG Chun-sheng LUO Bing ZHAO Zhen-long GUO Jian-rong JIN Yao-jun WU Gang YUAN Wei YUAN Zhi-guo YUE Yun 2011Chinese Medical Journal2011,,22:22
18Strain-based design for buried pipelines subjected to landslides显示文摘Landslides are one of the key problems for stability analysis of pipelines in the western region of China where the geological conditions are extremely complicated. In order to offer a theoretical basis for the pipe-soil interaction, the general finite element program ABAQUS is used to analyze the distribution of pipe strain caused by landslide through which the pipeline passes. In this paper the Ramberg-Osgood constitutive equation is used to study the strain-based mechanical characteristics of pipelines. Different calculation schemas are designed by considering the change of spatial relationship between pipeline and landslide, and the change of D/t, diameter-thickness ratio of pipeline. The results indicate that the pipeline is primarily subjected to tension stress when the landslide crosses the pipeline perpendicularly, the pipe strain is a maximum along the central axis of the landslide, and reverse bending occurs on pipeline at both edges of the landslide. The pipeline is primarily subjected to friction force caused by the downward movement of the landslide, and the friction force is relatively small when the landslide is parallel to the pipeline. The pipe strain is in proportional to D/t, and this means decreasing D/t can help to improve security of pipelines subjected to the landslide.Han Bing Wang Zhiyin Zhao Honglin Jing Hongyuan WuZhangzhong 2012Petroleum Science2012,9,2:22
19Changes of protein oxidation,lipid oxidation and lipolysis in Chinese dry sausage with different sodium chloride curing salt content显示文摘The effect of sodium chloride(NaCl)curing salt content on protein oxidation,lipid oxidation and lipolysis of Chinese dry sausage was investigated.Two groups Chinese dry sausages with 2%and 4%(m/m)salt content were studied.The degree of protein oxidation increased during the processes in two groups sausages,while the content of phospholipids decreased,neutral lipids and free fatty acids increased.The degree of protein oxidation,lipid oxidation and lipolysis in 4%NaCl content group was higher than those in 2%NaCl content group,while 4%NaCl content group has higher lipase activity.In conclusion,4%NaCl may facilitate the protein oxidation,lipid hydrolysis and oxidation in Chinese dry sausage,and the protein oxidation had strong correlation with lipid oxidation and lipolysis.The results could provide a basis for improving the technology of industrial production.Bing Zhao Huimin Zhou Shunliang Zhang Xiaoqian Pan Su Li Ning Zhu Qianrong Wu Shouwei Wang Xiaoling Qiao Wenhua Chen 2020Food Science and Human Wellness2020,9,4:22
20Self-healing alginate-carboxymethyl chitosan porous scaffold as an effective binder for silicon anodes in lithium-ion batteries显示文摘Polymer binder plays a pivotal role in electrochemical performance of high-capacity silicon(Si)anode that usually suffers from severe capacity fading due to enormous substantial volume change of Si during cycling.In an effort to find efficient polymer binder that could mitigate such capacity fading,alginate-carboxymethyl chitosan(Alg-C-chitosan)composite polymer was investigated as a low-cost watersoluble binder for silicon anodes in lithium-ion batteries.The electrostatic interaction between carboxylate(-COO-)of Alg and protonated amines(-NH3+)of C-chitosan forms a selfhealing porous scaffold structure.Synergistic effect on the enhanced porous scaffold structure and self-healing electrostatic interaction of Alg-C-chitosan binder effectively can tolerate the tremendous volume change of Si and maintain an integrated electrode structure during cycling process.The Si nanopowder electrodes with Alg-C-chitosan composite binder exhibit an excellent cycling stability,with a capacity of750 mAh·g-1 remaining after 100 th cycling.In addition,an extraordinary areal capacity of 3.76 mAh·cm-2 is achieved for Si-based anodes with Alg-C-chitosan binder.Zhao-Hui Wu Juan-Yu Yang Bing Yu Bi-Meng Shi Chun-Rong Zhao Zhang-Long Yu 2019Rare Metals2019,38,9:22
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