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1人工湿地系统对污水磷的净化效果显示文摘建立以亚热带湿生、水生植物为主的十二套下行流—上行流人工湿地系统作为处理城镇生活污水的对策。以其中四套研究其在不同的水力负荷及气候条件下对污水中磷的去除效果。人工湿地系统随处理运行时间的推移趋于稳定 ,对污水中的总磷、无机磷显示较好的净化效率 ,平均去除率在冬季达到 40 %以上 ,夏季达到 60 %以上 ,出水达到国家地面水Ⅲ级标准。水生植物在系统中起到明显作用 ,有植物系统的除磷效率及稳定性均高于无植物对照 ,其中 2号茭白—石菖蒲系统的效果最好 ,总磷平均去除率为 65%。 4号草—苔草系统在高水力负荷下的净化效果优于 2号。WU Zhen-bin CHEN Hui-rong HE Feng CHENG Shui-ping FU Gui-ping JIN Jian-ming QIU Dong-ru REN Ming-xun 任明迅 金建明 贺锋 陈辉蓉 付贵萍 吴振斌 邱东茹 成水平 2001水生生物学报2001,25,1:188
2Identification of a novel coronavirus causing severe pneumonia in human:a descriptive study显示文摘Background:Human infections with zoonotic coronaviruses(CoVs),including severe acute respiratory syndrome(SARS)-CoV and Middle East respiratory syndrome(MERS)-CoV,have raised great public health concern globally.Here,we report a novel batorigin CoV causing severe and fatal pneumonia in humans.Methods:We collected clinical data and bronchoalveolar lavage(BAL)specimens from five patients with severe pneumonia from Wuhan Jinyintan Hospital,Hubei province,China.Nucleic acids of the BAL were extracted and subjected to next-generation sequencing.Virus isolation was carried out,and maximum-likelihood phylogenetic trees were constructed.Results:Five patients hospitalized from December 18 to December 29,2019 presented with fever,cough,and dyspnea accompanied by complications of acute respiratory distress syndrome.Chest radiography revealed diffuse opacities and consolidation.One of these patients died.Sequence results revealed the presence of a previously unknownβ-CoV strain in all five patients,with 99.8%to 99.9%nucleotide identities among the isolates.These isolates showed 79.0%nucleotide identity with the sequence of SARS-CoV(GenBank NC_004718)and 51.8%identity with the sequence of MERS-CoV(GenBank NC_019843).The virus is phylogenetically closest to a bat SARS-like CoV(SL-ZC45,GenBank MG772933)with 87.6%to 87.7%nucleotide identity,but is in a separate clade.Moreover,these viruses have a single intact open reading frame gene 8,as a further indicator of bat-origin CoVs.However,the amino acid sequence of the tentative receptor-binding domain resembles that of SARS-CoV,indicating that these viruses might use the same receptor.Conclusion:A novel bat-borne CoV was identified that is associated with severe and fatal respiratory disease in humans.Li-Li Ren Ye-Ming Wang Zhi-Qiang Wu Zi-Chun Xiang Li Guo Teng Xu Yong-Zhong Jiang Yan Xiong Yong-Jun Li Xing-Wang Li Hui Li Guo-Hui Fan Xiao-Ying Gu Yan Xiao Hong Gao Jiu-Yang Xu Fan Yang Xin-Ming Wang Chao Wu Lan Chen Yi-Wei Liu Bo Liu Jian Yang Xiao-Rui Wang Jie Dong Li Li Chao-Lin Huang Jian-Ping Zhao Yi Hu Zhen-Shun Cheng Un-Lin Liu Zhao-Hui Qian Chuan Qin Qi Jin Bin Cao Jian-Wei Wang 2020Chinese Medical Journal2020,,9:99
3A rapid advice guideline for the diagnosis and treatment of 2019 novel coronavirus(2019-nCoV) infected pneumonia(standard version)显示文摘In December 2019, a new type viral pneumonia cases occurred in Wuhan, Hubei Province;and then named '2019 novel coronavirus(2019-nCoV)' by the World Health Organization(WHO) on 12 January 2020. For it is a never been experienced respiratory disease before and with infection ability widely and quickly, it attracted the world’s attention but without treatment and control manual. For the request from frontline clinicians and public health professionals of 2019-nCoV infected pneumonia management, an evidence-based guideline urgently needs to be developed. Therefore, we drafted this guideline according to the rapid advice guidelines methodology and general rules of WHO guideline development;we also added the first-hand management data of Zhongnan Hospital of Wuhan University. This guideline includes the guideline methodology, epidemiological characteristics, disease screening and population prevention, diagnosis, treatment and control(including traditional Chinese Medicine), nosocomial infection prevention and control, and disease nursing of the 2019-nCoV. Moreover, we also provide a whole process of a successful treatment case of the severe 2019-nCoV infected pneumonia and experience and lessons of hospital rescue for 2019-nCoV infections. This rapid advice guideline is suitable for the first frontline doctors and nurses, managers of hospitals and healthcare sections, community residents, public health persons, relevant researchers, and all person who are interested in the 2019-nCoV.Ying-Hui Jin Lin Cai Zhen-Shun Cheng Hong Cheng Tong Deng Yi-Pin Fan Cheng Fang Di Huang Lu-Qi Huang Qiao Huang Yong Han Bo Hu Fen Hu Bing-Hui Li Yi-Rong Li Ke Liang Li-Kai Lin Li-Sha Luo Jing Ma Lin-Lu Ma Zhi-Yong Peng Yun-Bao Pan Zhen-Yu Pan Xue-Qun Ren Hui-Min Sun Ying Wang Yun-Yun Wang Hong Weng Chao-Jie Wei Dong-Fang Wu Jian Xia Yong Xiong Hai-Bo Xu Xiao-Mei Yao Yu-Feng Yuan Tai-Sheng Ye Xiao-Chun Zhang Ying-Wen Zhang Yin-Gao Zhang Hua-Min Zhang Yan Zhao Ming-Juan Zhao Hao Zi Xian-Tao Zeng Yong-Yan Wang Xing-Huan Wang 2020Military Medical Research2020,7,1:161
4Temperature variations recovered from tree-rings in the middle Qilian Mountain over the last millennium显示文摘Based on the cross-dated tree-ring samples collected from the middle Qilian Moun- tain, a standard ring-width chronology had been developed, which covered the period AD 1000 to 2000. The correlations between the chronology and climatic records from the nearby meteorological stations indicated that temperature was the dominant climatic factor for tree growth at upper timberline, and the most important climatic factor for the tree growth in the area was the mean temperature from previous December to current April. The temperature variations recovered from the ring-width data showed a cold period during the “Little Ice Age” and the con- tinuous warming during the twentieth century. Comparison between the ring-width chronology and δ18O records from the Dunde ice core in the Qilian Mountain indicated that there was a con- sistent trend in both time series. A significant correlation existed between our ring-width chro- nology and the Northern Hemispheric temperature, suggesting that the climate changes in the Qilian Mountain were not only driven by regional factors, but also responsive to the global cli- mate.LIU Xiaohong1,2, QIN Dahe1, SHAO Xuemei , CHEN Tuo1 & REN Jiawen12 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 2. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2005Science China Earth Sciences2005,48,4:66
5Association of H.pylori infection with gastric carcinoma:a Meta analysis显示文摘AIM: To follow the principles of evidence based medicine to reach the integrated results of these studies.METHODS: Twenty-one papers of case-control studies were selected, including 11 on gastric cancer, 7 on precancerous lesion of stomach and 3 on lymphoma of stomach: Meta analysis was used to sum up the odds ratios (OR) of these studies.RESULTS: H. Pylori vsgastric cancer (intestinal and diffuse type): the odds ratio from the fixed effect model is 3.0016(95% Cl 2.4197-3.7234, P < 0.001 ). H. Pylori vs precancerous lesion of stomach: a random effect model was used to calculate the summary odds ratio and its value is 2.5635 (95% Cl: 1.8477-3.5566, P < 0.01). H. Pylori vs lymphoma of stomach: though the quantity of literature is too small to make Meta analysis, the data of these 3 studies show that lymphoma of stomach is highly associated with H. Pylori infections.CONCLUSION: Since it had been revealed that H. Pylori infection pre-exists in gastric carcinoma and precancerous lesions, the results of Meta analysis present a strong evidence to support the conclusion that H. Pylori infection is a risk factor for gastric carcinoma.Fu-Bo Xue~1 Yong-Yong Xu~1 Yi Wan~1 Bo-Rong Pan~2 Jun Ren~2 Dai-Ming Fan~3 1 Department of Health Statistics,Department of2 Oncology3 Gastroenterology of XiJing Hospital,the Fourth Military Medical University,Xi’an 710032,Shaanxi Province,China 2001World Journal of Gastroenterology2001,7,6:66
6Antitumor effect of matrine in human hepatoma G2 cells by inducing apoptosis and autophagy显示文摘AIM: To study the antitumor effect of matrine in human hepatoma G2 (HepG2) cells and its molecular mechanism involved in antineoplastic activities. METHODS: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to detect viability of HepG2 cells. The effect of matrine on cell cycle was detected by flow cytometry. Annexin-V-FITC/PI double staining assay was used to detect cellular apoptosis. Cellular morphological changes were observed under an inverted phase contrast microscope. Transmission electron microscopy was performed to further examine ultrastructural structure of the cells treatedwith matrine. Monodansylcadaverine (MDC) staining was used to detect autophagy. Whether autophagy is blocked by 3-methyladenine (3-MA), an autophagy inhibitor, was evaluated. Expression levels of Bax and Beclin 1 in HepG2 cells were measured by real-time quantitative reverse transcription-polymerase chain reaction (RT-PCR).RESULTS: Matrine signif icantly inhibited the proliferation of HepG2 cells in a dose- and time-dependent manner, and induced G1-phase cell cycle arrest and apoptosis of HepG2 cells in a dose-dependent manner. The total apoptosis rate was 0.14% for HepG2 cells not treated with matrine. In contrast, the apoptosis rate was 28.91%, 34.36% and 38.80%, respectively, for HepG2 cells treated with matrine at the concentration of 0.5, 1.0 and 2.0 mg/mL. The remarkable morphological changes were observed under an inverted phase contrast microscope. Abundant cytoplasmic vacuoles with varying sizes were observed in HepG2 cells treated with matrine. Furthermore, vacuolization in cytoplasm progressively became larger and denser when the concentration of matrine was increased. Electron microscopy demonstrated formation of abundant autophagic vacuoles in HepG2 cells after matrine treatment. When the specif ic autophagic inhibitor, 3-MA, was applied, the number of autophagic vacuoles greatly decreased. MDC staining showed that the fluorescent density was higher and the number of MDC-labeled particles in HepG2 cells was greater in matrine treatment group than in control group. Fewer autophagic vacuoles were observed in the combined 3-MA and matrine treatment group when 3-MA was added before matrine treatment, indicating that both autophagy and apoptosis are activated when matrine-induced death of hepatoma G2 cells occurs. Real-time quantitative RT-PCR revealed that the expression levels of Bax gene, an apoptosis-related molecule, and Beclin 1 gene which plays a key role in autophagy were higher in matrine treatment group than in control group, indicating that Beclin 1 is involved in matrineinduced autophagy and the pro-apoptotic mechanismof matrine may be related to its upregulation of Bax expression. CONCLUSION: Matrine has potent antitumor activities in HepG2 cells and may be used as a novel effective reagent in treatment of hepatocellular carcinoma.Zhang, Jun-Qiang Li, Yu-Min Liu, Tao He, Wen-Ting Chen, Ying-Tai Chen, Xiao-Hui Li, Xun Zhou, Wen-Ce Yi, Jian-Feng Ren, Zhi-Jian 2010World Journal of Gastroenterology2010,16,34:61
7Progress in the bionic study on anti-adhesion and resistance reduction of terrain machines显示文摘The theoretical studies of bionics of machinery have great scientific significance, and the development of bionic machines has large practical values in the field of engineering and technology. Through the rigorous selection process of evolution, the survived living organisms have successfully developed outstanding abilities to adapt to their surroundings and to reproduce their offspring. In this review,we interpreted the fundamental principles of anti-adhesion and anti-resistance of soil animals by reviewing the current status in this research field and summarizing the work of the research group at Jilin University of China in the past decades. The principles and technologies used in morphology bionics,electric-osmosis bionics,flexibility bionics,configuration bionics and coupling bionics were examined.Finally,the applications of the engineering bionics and their extensive prospects were introduced.REN LuQuanKey Laboratory for Terrain-Machine Bionics Engineering of Ministry of Education, School for Biology and Agricultural Engineering, Jilin University, Changchun 130025, China 2009Science China(Technological Sciences)2009,52,2:64
8DIAGNOSIS AND TREATMENT OF CESAREAN SCAR PREGNANCY显示文摘Objective To investigate the early diagnosis and treatment of cesarean scar pregnancy(CSP).Methods Clinical data of 28 patients with CSP in Peking Union Medical College Hospital from January 1994 to April 2007,including age,interval from the last cesarean delivery to diagnosis,clinical presentation,location of the lesion,process of diagnosis and treatment,outcome,and follow-up,were retrospectively analyzed.Results CSP constituted 1.05% of all ectopic pregnancies,and the ratio of CSP to pregnancy was 1∶1221.The mean age of the group was 31.4 years.Twenty-six women had only one prior cesarean delivery.The interval from the last cesarean delivery to diagnosis ranged from 4 months to 15 years.The most common presenting symptoms of CSP were amenorrhoea and vaginal bleeding.Seventeen cases were misdiagnosed as early intrauterine pregnancies and 2 were misdiagnosed as gestational trophoblastic tumor.The other 9 were diagnosed definitely before treatment.The diagnosis was made based on cesarean delivery history,gynecologic examination,ultrasound,and magnetic resonance imaging(MRI).The treatment of CSP included systemic or local methotrexate administration,conservative surgery,and hysterectomy.The conservative treatment was successful in 24 cases.All of the 28 women were cured through individual therapies.Conclusions CSP is rare and usually misdiagnosed as other diseases.Ultrasound is valuable for diagnosing CSP,and MRI can be used as an adjunct to ultrasound scan.Early diagnosis offers the options of conservative treatment and greatly improves the outcome of patients.Individual therapy is strongly recommended.Lan-zhou Jiao Jun Zhao Xi-run Wan Xin-yan Liu Feng-zhi Feng Tong Ren Yang Xiang 2008Chinese Medical Sciences Journal2008,23,1:65
9Multi-functional SiC/Al Composites for Aerospace Applications显示文摘有大量的部分(55%-57%) 的多功能的 Al 矩阵 composites 原文如此,粒子与新 pres-sureless 渗入制造技术被生产。X 光检查察觉和显微镜的观察显示没有孔, macroscopi-cally 同类的 composites。调查进一步表明 SiC/Al composites 拥有低密度(2.94 g/cm3 ) ,高有弹性的模量(220 GPa ) ,由于热扩大的低系数的突出的热管理功能(8 潦吗?Cui Yan Wang Lifeng Ren Jianyue 2008Chinese Journal of Aeronautics2008,21,6:71
10Mesenchymal stem cells: a new strategy for immunosuppression and tissue repair显示文摘间充质的干细胞(MSC ) 为治疗各种各样的疾病有大潜力,特别那些与织物有关损坏包含有免疫力的反应。各种各样的研究证明了 MSC 在 vitro 并且在 vivo 是强烈抑制免疫力的。我们的最近的研究证明了那未刺激的 MSC 确实不能免疫力的抑制;他们与 TNF- 伪, IL-1 伪或 IL-1 尾与激活的淋巴细胞的上层清液,或与 IFN- 纬的联合在刺激之上变得 potently 抑制免疫力。这观察表明在某些情形下面,煽动性的 cytokines 能实际上变得抑制免疫力。我们证明在调停 MSC 的免疫力的抑制的机制有一个种类变化:由告知 cytokine 的老鼠 MSC 的免疫力的抑制被氮的氧化物调停(没有) 而由告知 cytokine 的人的 MSC 的免疫力的抑制通过 indoleamine 被执行 2, 3-dioxygenase (伊多语) 。在有煽动性的 cytokines 的刺激之上,另外,老鼠和人的 MSC 分泌几白血球 chemokines 显然服务与 MSC 吸引有免疫力的房间进最近,在哪儿不或伊多语被预言很活跃。因此,由煽动性的刺激 cytokine 的 MSC 的免疫力的抑制经由 chemokines 的一致行动发生并且免疫者禁止没有或伊多语由 MSC 生产了。因此,我们的结果在对待有免疫力的回答导致的织物损害关于调停 MSC 的免疫力的抑制并且为 MSC 的更好的申请的机制提供新奇信息。Yufang Shi Gangzheng Hu Juanjuan Su Wenzhao Li Qing Chen Peishun Shou Chunliang Xu Xiaodong Chen Yin Huang Zhexin Zhu Xin Huang Xiaoyan Han Ningxia Xie Guangwen Ren 2010Cell Research2010,20,5:72
11RNA-seq analysis of prostate cancer in the Chinese population identifies recurrent gene fusions, cancer-associated long noncoding RNAs and aberrant alternative splicings显示文摘在有前列腺癌症的不同赛跑的病人之中有显著不同;然而,位于这差别下面的机制仍然保持不清楚。这里,我们在场 transcriptome 的一处全面风景用 RNA-seq,越过关于基因熔化的前列腺癌症 transcriptomes 的揭示巨大的差异,长 noncoding RNA (长 ncRNA ) ,其他的拼接和体的变化从中国人口 14 主要前列腺癌症和他们的配对的正常对应物介绍。14 个肿瘤(21.4%) 中的三个在中国病人怀有 TMPRSS2 尔格熔化,和这熔化的低流行进一步在一个另外的肿瘤集合(10/54=18.5%) 被证实。尤其是,二新奇基因熔化, CTAGE5-KHDRBS3 (20/54=37%) 和 USP9Y-TTTY15 (19/54=35.2%) ,在我们的耐心的队经常发生了。介绍的进一步系统的 transcriptional 识别了是在肿瘤表示的差别的众多的长 ncRNAs。在长 ncRNA 和基因的表示之间的关联的分析建议长 ncRNAs 可以在 transcriptional 规定以外有功能。这研究在中国人口产出新卓见进前列腺癌症的致病。Shancheng Ren Zhiyu Peng Jian-Hua Mao Yongwei Yu Changjun Yin Xin Gao Zilian Cui Jibin Zhang Kang Yi Weidong Xu Chao Chen Fubo Wang Xinwu Guo Ji Lu Jun Yang Min Wei Zhijian Tian Yinghui Guan Liang Tang Chuanliang Xu Linhui Wang Xu Gao Wei Tian Jian Wang Huanming Yang Jun Wang Yinghao Sun 2012Cell Research2012,22,5:66
12Translocation of mixed lineage kinase domain-like protein to plasma membrane leads to necrotic cell death显示文摘混合的系 kinase 像域的蛋白质(MLKL ) 被识别受体交往下游地工作蛋白质 3 (RIP3 ) 在肿瘤坏死 factor-α(TNF ) 导致了坏死(也叫的 necroptosis ) 。然而, MLKL 怎么工作调停 necroptosis 是未知的。由在 MLKL 大美人房间的 MLKL 功能的宪法,我们证明 MLKL 的 N 终点在 necroptosis 为它的功能被要求。在对待 TNF 的房间的 MLKL 的 oligomerization 为 necroptosis 是必要的,当人工地由使用荷尔蒙绑定领域一起强迫 MLKL (HBD*) 扳机 necroptosis。尤其是,一起强迫 N 终端领域(ND ) 然而并非 MLKL 的 C 终端 kinase 领域引起 necroptosis。进一步的删除分析证明 four-α MLKL (1-130 氨基酸) 的螺旋捆是足够的触发 necroptosis。两 HBD*调停并且 MLKL (ND ) 或 MLKL 的导致 TNF 的建筑群是到血浆膜的类脂化合物椽子的这些建筑群的 tetramers,和 translocation 先于房间死亡。homo-oligomerization 为 MLKL translocation 被要求,为血浆膜地点的信号顺序位于第一和第二 α 的连接; MLKL 的 -helices。MLKL 或 MLKL (ND ) 的血浆膜 translocation 导致钠流入,并且从房间文化媒介的钠的弄空禁止 necroptosis。上述所有现象没在 apoptosis 被看见。因此, MLKL oligomerization 导致 MLKL 的 translocation 到血浆膜,和血浆膜的类脂化合物椽子由自己或经由到增加的另外的蛋白质的 MLKL 复杂行为任何一个钠流入,增加渗透的压力,最后导致膜破裂。Xin Chen Wenjuan Li Junming Ren Deli Huang Wan-ting He Yunlong Song Chao Yang Wanyun Li Xinru Zheng PengdaChen Jiahuai Han 2014Cell Research2014,24,1:67
13Prevalence of depression in coronary heart disease in China:a systematic review and meta-analysis显示文摘Ren Yanping Yang Hui Colette Browning Shane Thomas Liu Meiyan 2014Chinese Medical Journal2014,,16:64
14Autoimmune Encephalitis: An Expanding Frontier of Neuroimmunology显示文摘INTRODUCTION Discovery of the spectrum ofautoimmune encephalitis (ALE) is among the most attractive events of neurology in the past decade.AIE includes a heterogeneous group of encephalitic syndromes,which generally include two major categories:classic paraneoplastic limbic encephalitis (LE) associated with the so-called well-characterized onconeural autoantibodies against intracellular neuronal antigens (e.g.,Hu,Ma2,etc.) and new-type AIE associated with autoantibodies to the neuronal surface or synapticantigens.Hong-Zhi Guan Hai-Tao Ren Li-Ying Cui 2016Chinese Medical Journal2016,,9:63
15Missed diagnosis of early gastric cancer or high-grade intraepithelial neoplasia显示文摘AIM: To investigate the causes of missed diagnosis of early gastric cancer (EGC) or high-grade intraepithelial neoplasia (HGIN) in Chongqing, China. METHODS: The present study summarizes 103 cases of EGC/HGIN detected by esophagogastroduodenos-copy (EGD) and pathological analysis from January 2010 to December 2011. Dimethyl silicone oil was administrated orally 15 min before the EGD procedures. The stomach was cleaned by repeated washing with saline when the gastroscope entered the stomach cavity. Suspected EGC lesions were subject to conventional biopsy sampling and pathological examinations. The correlation between lesion locations, endoscopic morphology of cancerous sites, training level of the examiners, pathological biopsies, and missed diagnosis was analyzed. RESULTS: Twenty-three cases were missed among the 103 cases (22.23%) of EGC/HGIN. The rate of missed EGC in the gastroesophageal junction (8/19, 42.1%) was significantly higher than at other sites (15/84, 17.86%) (χ2 = 5.253, P = 0.022). In contrast, the rate of missed EGC in the lower stomach body (2/14, 14.29%) was lower than at other sites (21/89,23.6%), but there were no significant differences (χ2 = 0.289, P = 0.591). The rate of missed EGC in the gastric antrum (5/33, 15.15%) was lower than at other sites (18/70, 25.71%), but there were no significant differences (χ2 = 1.443, P = 0.230). Endoscopists from less prestigious hospitals were more prone to not diagnosing EGC than those from more prestigious hospitals (χ2 = 4.261, P = 0.039). When the number of biopsies was < 4, the rate of missed diagnosis was higher (20/23, 89.96%) than for when there were > 4 biopsies (3/23, 13.04%) (P < 0.001). In addition, there was no significant difference in the rate of missed diagnosis in patients with 1-3 biopsy specimens (χ2 = 0.141, P = 0.932). CONCLUSION: Endoscopists should have a clear understanding of the anatomical characteristics of the esophagus/stomach, and endoscopic identification of early lesions increases with the number of biopsies.Wei Ren Jin Yu Zhi-Mei Zhang Yuan-Kun Song Yi-Hui Li Lei Wang 2013World Journal of Gastroenterology2013,19,13:58
16Relationship between hyperuricemia and metabolic syndrome显示文摘Objective: To investigate the relationship between metabolic syndrome and hyperuricemia. Methods: A total of 2 374 subjects who received health examination in our hospital from Jan. 2004 to Dec. 2006 were enrolled in our study. Hyperuricemia is defined as ≥7 mg/dl (in men) or ≥6.0 mg/dl (in women). Metabolic syndrome was defined using AHA/NHLBI (American Heart Association/National Heart, Lung, and Blood Institute) criteria. Results: (1) The overall prevalence of hyperuricemia was 13.10%. The condition was more common in men than in women (19.07% vs 3.42%). (2) Among men, uric acid concentration is statistically significantly positively correlated with waist circumference, blood pressure, and triglyceride. Uric acid is negatively correlated with serum high-density lipoprotein-cholesterol (HDL-C). Uric acid concentration is most strongly correlated with serum triglyceride (r=0.379) and waist circumference (r=0.297). Among women, statistically significant positive correlations were noted for the serum uric acid concentrations with waist circumference, triglyceride and fasting plasma glucose. Serum triglyceride (r=0.329) and waist circumference (r=0.234) are most strongly correlated with uric acid concentrations. (3) Men with hyperuricemia had a 1.634-fold increased risk of metabolic syndrome as compared with those without hyperuricemia odds ratio (OR)=1.634, P=0.000. Women with hyperuricemia had a 1.626-fold increased risk of metabolic syndrome (OR=1.626, P=0.000) as compared with those without hyperuricemia. Conclusion: Hyperuricemia is prevalent among Chinese population. Additionally, serum uric acid is positively associated with metabolic syndrome.CHEN Li-ying ZHU Wen-hua CHEN Zhou-wen DAI Hong-lei REN Jing-jing CHEN Jian-hua CHEN Lei-qian FANG Li-zheng 2007Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2007,8,8:54
17Generalized thermal resistance for convective heat transfer and its relation to entransy dissipation显示文摘In order to further analyze and optimize convective heat transfer process further, the concepts of heat flux weighted average heat temperature and heat flux weighted average heat temperature difference in multi-dimensional heat transfer system were introduced in this paper. The ratio of temperature difference to heat flux is defined as the generalized thermal resistance of convective heat transfer processes, and then the minimum thermal resistance theory for convective heat transfer optimization was developed. By analyzing the relationship between generalized thermal resistance and entansy dissipation in convective heat transfer processes, it can be concluded that the minimum thermal resistance theory equals the entransy dissipation extremum theory. Finally, a two-dimensional convective heat transfer process with constant wall temperature is taken as an example to illustrate the applicability of generalized thermal resistance to convective heat transfer process analysis and optimization.CHEN Qun REN JianXun 2008Chinese Science Bulletin2008,53,23:51
18Concentration and source identification of polycyclic aromatic hydrocarbons and phthalic acid esters in the surface water of the Yangtze River Delta,China显示文摘The pollution from polycyclic aromatic hydrocarbons(PAHs) and phthalic acid esters(PAEs) in the surface water of the rapidly urbanized Yangtze River Delta region was investigated.Fourteen surface water samples were collected in June 2010.Water samples were liquid-liquid extracted using methylene chloride and analyzed by gas chromatography-mass spectrometry.Concentrations of PAHs and PAEs ranged 12.9-638.1 ng/L and 61-28550 ng/L,respectively.Fluoranthene,naphthalene,pyrene,phenanthrene,di-2ethylhexyl phthalate,and di-n-butyl phthalate were the most abundant compounds in the samples.The water samples were moderately polluted with benzo[a]pyrene according to China's environmental quality standard for surface water.The two highest concentrations of PAHs and PAEs occurred in samples from Taihu Lake,Wuxi City and the western section of Yangchenghu Lake.Potential sources of pollution at S7 were petroleum combustion and the plastics industry,and at Yangchenghu Lake were petroleum combustion and domestic waste.Pollution in samples from the Beijing-Hangzhou Grand Canal originated from diesel engines.There were no obvious sources of pollution for the other water samples.These results can be used as reference levels for future monitoring programs of pollution from PAHs and PAEs.Lifei Zhang Liang Dong Lijun Ren Shuangxin Shi Li Zhou Ting Zhang Yeru Huang 2012Journal of Environmental Sciences2012,24,2:56
19Temporal and spatial variations of the active layer along the Qinghai-Tibet Highway in a permafrost region显示文摘Using monitored active layer thickness(ALT) and environmental variables of 10 observation fields along the Qinghai-Tibet Highway in permafrost region of the Qinghai-Tibetan Plateau(QTP),a model for ALT estimation was developed.The temporal and spatial characteristics of the ALT were also analyzed.The results showed that in the past 30 years ALT in the study region increased at a rate of 1.33 cm a-1.Temperatures at the upper limit of permafrost and at 50 cm depth,along with soil cumulative temperature at 5 cm depth also exhibited a rising trend.Soil heat flux increased at a rate of 0.1 Wm-2 a-1.All the above changes demonstrated that the degradation of permafrost happened in the study region on the QTP.The initial thawing date of active layer was advanced,while the initial freezing date was delayed.The number of thawing days increased to a rate of 1.18 da-1.The variations of active layer were closely related to the permafrost type,altitude,underlying surface type and soil composition.The variations were more evident in cold permafrost region than in warm permafrost region,in high-altitude region than in low-altitude region,in alpine meadow region than in alpine steppe region;and in fine-grained soil region than in coarse-grained soil region.LI Ren ZHAO Lin DING YongJian WU TongHua XIAO Yao DU ErJi LIU GuangYue QIAO YongPing 2012Chinese Science Bulletin2012,57,35:51
20Pharmacological effects of Astragaloside IV: a literature review显示文摘OBJECTIVE: To review the pharmacological effects and mechanisms of action of Astragaloside IV in Huangqi (Radix Astragali Mongolici). METHODS: Aticles focusing on Astragaloside IV in English and Chinese in databases were collected and reviewed in order to summarize the latest extraction separation, pharmacokinetics, and the pharmacological effects of astrageloside IV. RESULTS: Protective effects of Astrageloside IV on the cardiovascular system, immune, digestive, nervous system were identified, and the action mechanisms were associated with regulation of the calcium balance, anti-oxydant, antiapoptosis, antivirus, and so on. CONCLUSION: Astrageloside IV has broad application prospects, especially in cardiovascular diseases, digestive diseases, cancer and other modern high incidence, high-risk diseases, and could be developed as a medicine.Shuang Ren Hua Zhang Yongping Mu Mingyu Sun Ping Liu 2013Journal of Traditional Chinese Medicine2013,33,3:57
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