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326篇 您的检索式:作者名="Kui CHEN"
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1Clinical characteristics of fatal and recovered cases of coronavirus disease 2019 in Wuhan,China:a retrospective study显示文摘Background:The 2019 novel coronavirus has caused the outbreak of the acute respiratory disease in Wuhan,Hubei Province of China since December 2019.This study was performed to analyze the clinical characteristics of patients who succumbed to and who recovered from 2019 novel coronavirus disease(COVID-19).Methods:Clinical data were collected from two tertiary hospitals in Wuhan.A retrospective investigation was conducted to analyze the clinical characteristics of fatal cases of COVID-19(death group)and we compare them with recovered patients(recovered group).Continuous variables were analyzed using the Mann-WhitneyU test.Categorical variables were analyzed byχ2 test or Fisher exact test as appropriate.Results:Our study enrolled 109 COVID-19 patients who died during hospitalization and 116 recovered patients.The median age of the death group was older than the recovered group(69[62,74]vs.40[33,57]years,Z=9.738,P<0.001).More patients in the death group had underlying diseases(72.5%vs.41.4%,χ2=22.105,P<0.001).Patients in the death group had a significantly longer time of illness onset to hospitalization(10.0[6.5,12.0]vs.7.0[5.0,10.0]days,Z=3.216,P=0.001).On admission,the proportions of patients with symptoms of dyspnea(70.6%vs.19.0%,χ2=60.905,P<0.001)and expectoration(32.1%vs.12.1%,χ2=13.250,P<0.001)were significantly higher in the death group.The blood oxygen saturation was significantly lower in the death group(85[77,91]%vs.97[95,98]%,Z=10.625,P<0.001).The white blood cell(WBC)in death group was significantly higher on admission(7.23[4.87,11.17]vs.4.52[3.62,5.88]×109/L,Z=7.618,P<0.001).Patients in the death group exhibited significantly lower lymphocyte count(0.63[0.40,0.79]vs.1.00[0.72,1.27]×109/L,Z=8.037,P<0.001)and lymphocyte percentage(7.10[4.45,12.73]%vs.23.50[15.27,31.25]%,Z=10.315,P<0.001)on admission,and the lymphocyte percentage continued to decrease during hospitalization(7.10[4.45,12.73]%vs.2.91[1.79,6.13]%,Z=5.242,P<0.001).Alanine transaminase(22.00[15.00,34.00]vs.18.70[13.00,30.38]U/L,Z=2.592,P=0.010),aspartate transaminase(34.00[27.00,47.00]vs.22.00[17.65,31.75]U/L,Z=7.308,P<0.001),and creatinine levels(89.00[72.00,133.50]vs.65.00[54.60,78.75]μmol/L,Z=6.478,P<0.001)were significantly higher in the death group than those in the recovered group.C-reactive protein(CRP)levels were also significantly higher in the death group on admission(109.25[35.00,170.28]vs.3.22[1.04,21.80]mg/L,Z=10.206,P<0.001)and showed no significant improvement after treatment(109.25[35.00,170.28]vs.81.60[27.23,179.08]mg/L,Z=1.219,P=0.233).The patients in the death group had more complications such as acute respiratory distress syndrome(ARDS)(89.9%vs.8.6%,χ2=148.105,P<0.001),acute cardiac injury(59.6%vs.0.9%,χ2=93.222,P<0.001),acute kidney injury(18.3%vs.0%,χ2=23.257,P<0.001),shock(11.9%vs.0%,χ2=14.618,P<0.001),and disseminated intravascular coagulation(DIC)(6.4%vs.0%,χ2=7.655,P=0.006).Conclusions:Compared to the recovered group,more patients in the death group exhibited characteristics of advanced age,pre-existing comorbidities,dyspnea,oxygen saturation decrease,increased WBC count,decreased lymphocytes,and elevated CRP levels.More patients in the death group had complications such as ARDS,acute cardiac injury,acute kidney injury,shock,and DIC.Yan Deng Wei Liu Kui Liu Yuan-Yuan Fang Jin Shang Ling Zhou Ke Wang Fan Leng Shuang Wei Lei Chen Hui-Guo Liu 2020Chinese Medical Journal2020,,11:29
2Dexmedetomidine-midazolam versus Sufentanil-midazolam for Awake Fiberoptic Nasotracheal Intubation: A Randomized Double-blind Study显示文摘Cheng-Wen Li Yan-Dong Li Hai-Tao Tian Xian-Gang Kong Kui Chen 2015Chinese Medical Journal2015,,23:23
3Association between Vitamin D Insufficiency and the Risk for Gestational Diabetes Mellitus in Pregnant Chinese Women显示文摘Objective To investigate the association between vitamin D deficiency and risk of gestational diabetes mellitus(GDM) in pregnant Chinese women.Methods A nested case-control study was conducted.Clinical and biochemical data were analyzed for 200 subjects with GDM and 200 subjects with normal glucose tolerance(NGT).Results The median(interquartile range) serum 25-hydroxyvitamin D(25OHD) levels were 22.39(17.67,29.38) and 25.86(19.09,34.88) nmol/L in the GDM and NGT groups,respectively.Rates of 25OHD deficiency or insufficiency were significantly higher in the GDM group than in the NGT group.Subjects with 25OHD levels <25 nmol/L had a 1.8-fold higher risk of GDM compared with subjects with higher vitamin D levels.In the GDM group,serum 25OHD was independently associated with HbA1c and insulin resistance after adjusting for confounding factors.In the NGT group,serum 25OHD was independently associated with fasting plasma glucose and systolic blood pressure after adjusting for maternal age and other confounding factors.Conclusion 25OHD insufficiency is very common in Chinese women.Low 25OHD status may be associated with insulin resistance and act as a risk factor for GDM.WANG Ou NIE Min HU Ying Ying ZHANG Kui LI Wei PING Fan LIU Jun Tao CHEN Li Meng XING Xiao Ping 2012Biomedical and Environmental Sciences2012,25,4:21
4Whole-Genome Sequencing and Analysis of the Chinese Herbal Plant Panax notoginseng显示文摘Wei Chen Ling Kui Guanghui Zhang Shusheng Zhu Jing Zhang Xiao Wang Min Yang Huichuan Huang Yixiang Liu Yong Wang Yahe Li Lipin Zeng Wen Wang Xiahong He Yang Dong Shengchao Yang 2017Molecular Plant2017,10,6:21
5One-step generation of complete gene knockout mice and monkeys by CRISPR/Cas9-mediated gene editing with multiple sgRNAs显示文摘CRISPR/Cas9 系统是一个有效编辑基因的方法,但是编辑基因的动物的多数显示出 mosaicism,与编辑仅仅在房间的部分发生。这里,我们证明那单个基因或多重基因能被 Cas9 mRNA 和多重邻近的单个指南的 RNA 的 zygotic 注射完全在老鼠和猴子胚胎击倒(spaced 10-200 bp 分开) 指向仅仅一把单个钥匙每基因的 exon。个别地在 Y 染色体上跟随八基因的指向的删除的 F0 老鼠的 Phenotypic 分析在产生猛烈老鼠表明了这条途径的坚韧性。重要地,这条途径在高效率交付完全的基因大美人(Arntl 上的 100% 并且 91% 在 Prrt2 上) 在猴子胚胎。最后,我们能在一个单个步骤产生一只完全的 Prrt2 猛烈猴子,表明在很快建立编辑基因的猴子模型的这条途径的实用性。Erwei Zuo Yi-Jun Cai Kui Li Yu Wei Bang-An Wang Yidi Sun Zhen Liu Jiwei Liu Xinde Hu Wei Wei Xiaona Huo Linyu Shi Cheng Tang Dan Liang Yan Wang Yan-Hong Nie Chen-Chen Zhang Xuan Yao Xing Wang Changyang Zhou Wenqin Ying Qifang Wang Ren-Chao Chen Qi Shen Guo-Liang Xu Jinsong Li Qiang Sun Zhi-Qi Xiong Hui Yang 2017Cell Research2017,27,7:21
6The Genome of Medicinal Plant Macleaya cordata Provides New Insights into Benzylisoquinoline Alkaloids Metabolism显示文摘在动物农业和药的抗菌素的 overuse 引起了一系列潜在的威胁到公共健康。Macleaya cordata 是从 Papaveraceae 家庭的药用的植物种,提供为抗菌剂的制造的一个安全资源为家畜喂添加剂。从 M. 的活跃成分 ? cordata 被知道包括 benzylisoquinoline 碱(偏爱) 象 sanguinarine (圣) 和 chelerythrine (CHE ) 那样的 ?,而是他们的新陈代谢的小径还得在这非模型植物被学习。在 M. 的圣和 CHE 的活跃生合成 ? cordata 被喂 13标记 C 的酷氨酸。为了增加,推进卓见,我们 de novo 定序 M 的整个染色体。cordata,第一从 Papaveraceae 家庭被定序。M.? 盖住 378 Mb 的 cordata 染色体与 43.5%being 编码 22,328 预言的编码蛋白质的基因 transposable 元素。作为基础 eudicot 的一个成员, M.? cordata 染色体缺乏 ? 发生在几乎所有 eudicots 的 paleohexaploidy 事件。从 genomics 数据, 16 的一个完全的集合 ? 新陈代谢 ? 为圣和 CHE 生合成的基因被检索,并且 14 项他们的生物化学的活动被验证。这些 genomics 和新陈代谢的数据在 M. 显示出保存 BIA 新陈代谢的小径 ? cordata 并且由庄稼改进或微生物引起的小径重建为圣和 CHE 的未来生产提供知识基础。Xiubin Liu Yisong Liu Peng Huang Yongshuo Ma Zhixing Qing Qi Tang Huifen Cao Pi Cheng Yajie Zheng Zejun Yuan Yuan Zhou Jinfeng Liu Zhaoshan Tang Yixiu Zhuo Yancong Zhang Linlan Yu Jialu Huang Peng Yang Qiong Peng dinbo Zhang Wenkai Jiang Zhonghua Zhang Kui Lin Dae-Kyun Ro Xiaoya Chen Xingyao Xiong Yi Shang Sanwen Huang Jianguo Zeng 2017Molecular Plant2017,10,7:19
7Single-cell transcriptomics reveals regulators underlying immune cell diversity and immune subtypes associated with prognosis in nasopharyngeal carcinoma显示文摘Nasopharyngeal carcinoma(NPC)is an aggressive malignancy with extremely skewed ethnic and geographic distributions.Increasing evidence indicates that targeting the tumor microenvironment(TME)represents a promising therapeutic approach in NPC,highlighting an urgent need to deepen the understanding of the complex NPC TME.Here,we generated single-cell transcriptome profiles for 7581 malignant cells and 40,285 immune cells from fifteen primary NPC tumors and one normal sample.We revealed malignant signatures capturing intratumoral transcriptional heterogeneity and predicting aggressiveness of malignant cells.Diverse immune cell subtypes were identified,including novel subtypes such as CLEC9A^+dendritic cells(DCs).We further revealed transcriptional regulators underlying immune cell diversity,and cell–cell interaction analyses highlighted promising immunotherapeutic targets in NPC.Moreover,we established the immune subtype-specific signatures,and demonstrated that the signatures of macrophages,plasmacytoid dendritic cells(pDCs),CLEC9A^+DCs,natural killer(NK)cells,and plasma cells were significantly associated with improved survival outcomes in NPC.Taken together,our findings represent a unique resource providing in-depth insights into the cellular heterogeneity of NPC TME and highlight potential biomarkers for anticancer treatment and risk stratification,laying a new foundation for precision therapies in NPC.Yu-Pei Chen Jian-Hua Yin Wen-Fei Li Han-Jie Li Dong-Ping Chen Cui-Juan Zhang Jia-Wei Lv Ya-Qin Wang Xiao-Min Li Jun-Yan Li Pan-Pan Zhang Ying-Qin Li Qing-Mei He Xiao-Jing Yang Yuan Lei Ling-Long Tang Guan-Qun Zhou Yan-Ping Mao Chen Wei Ke-Xu Xiong Hong-Bo Zhang Shi-Da Zhu Yong Hou Ying Sun Michael Dean Ido Amit Kui Wu Dong-Ming Kuang Gui-Bo Li Na Liu Jun Ma 2020Cell Research2020,30,11:19
8The Chromosome-Based Rubber Tree Genome Provides New Insights into Spurge Genome Evolution and Rubber Biosynthesis显示文摘The rubber tree,Hevea brasiliensis,produces natural rubber that serves as an essential industrial raw material.Here,we present a high-quality reference genome for a rubber tree cultivar GT1 using single-molecule real-time sequencing(SMRT)and Hi-C technologies to anchor the~1.47-Gb genome assembly into 18 pseudochromosomes.The chromosome-based genome analysis enabled us to establish a model of spurge chromosome evolution,since the common paleopolyploid event occurred before the split of Hevea and Manihot.We show recent and rapid bursts of the three Hevea-specific LTR-retrotransposon families during the last 10 million years,leading to the massive expansion by~65.88%(~970 Mbp)of the whole rubber tree genome since the divergence from Manihot.We identify large-scale expansion of genes associated with whole rubber biosynthesis processes,such as basal metabolic processes,ethylene biosynthesis,and the activation of polysaccharide and glycoprotein lectin,which are important properties for latex production.A map of genomic variation between the cultivated and wild rubber trees was obtained,which contains~15.7 million high-quality single-nucleotide polymorphisms.We identified hundreds of candidate domestication genes with drastically lowered genomic diversity in the cultivated but not wild rubber trees despite a relatively short domestication history of rubber tree,some of which are involved in rubber biosynthesis.This genome assembly represents key resources for future rubber tree research and breeding,providing novel targets for improving plant biotic and abiotic tolerance and rubber production.Jin Liu Cong Shi Cheng-Cheng Shi Wei Li Qun-Jie Zhang Yun Zhang Kui Li Hui-Fang Lu Chao Shi Si-Tao Zhu Zai-Yun Xiao Hong Nan Yao Yue Xun-Ge Zhu Yu Wu Xiao-Ning Hong Guang-Yi Fan Yan Tong Dan Zhang Chang-Li Mao Yun-Long Liu Shi-Jie Hao Wei-Qing Liu Mei-Qi Lv Hai-Bin Zhang Yuan Liu Ge-Ran Hu-tang Jin-Peng Wang Jia-Hao Wang Ying-Huai Sun Shu-Bang Ni Wen-Bin Chen Xing-Cai Zhang Yuan-Nian Jiao Evan E.Eichler Guo-Hua Li Xin Liu Li-Zhi Gao 2020Molecular Plant2020,13,2:15
9Coronavirus membrane-associated papain-like proteases induce autophagy through interacting with Beclinl to negatively regulate antiviral innate immunity显示文摘Xiaojuan Chen Kai Wang Yaling Xing Jian Tu Xingxing Yang Qian Zhao Kui Li Zhongbin Chen 2014Protein & Cell2014,5,12:14
10PRRT2 deficiency induces paroxysmal kinesigenic dyskinesia by regulating synaptic transmission in cerebellum显示文摘在充满脯氨酸的 transmembrane 蛋白质的变化(PRRT2 ) 2 与发作性的 kinesigenic 运动障碍(PKD ) 和几另外的发作性的神经病学的疾病被联系,但是 PRRT2 功能和病原的机制仍然保持大部分阴暗。这里,我们证明 PRRT2 是与 SNARE 建筑群和 downregulates 的部件交往的 presynaptic 蛋白质它的形成。Loss-of-function 变异的老鼠显示出显型由小脑的概括发作,过高热,或 optogenetic 刺激触发了的象 PKD 一样。有在小脑的小粒房间(GC ) 的特定的 PRRT2 删除的变异的老鼠概括在 Prrt2 空的老鼠看见的行为的显型。而且,记录在显示出的小脑的片做了在短暂举起的 GC 结果的刺激由 Purkinje 房间开火的抑制跟随了的那 optogenetic。在 PKD 处理使用的 anticonvulsant 药 carbamazepine 也在变异的老鼠减轻了象 PKD 一样行为。一起,我们的调查结果作为 SNARE 建筑群的一个新奇管理者识别 PRRT2 并且提供位于 PRRT2 相关的行为下面的电路机制。Guo-He Tan Yuan-Yuan Liu Lu Wang Kui Li Ze-Qiang Zhang Hong-Fu Li Zhong-Fei Yang Yang Li Dan Li Ming-Yue Wu Chun-Lei Yu Juan-Juan Long Ren-Chao Chen Li-Xi Li Lu-Ping Yin Ji-Wei Liu Xue-Wen Cheng Qi Shen You-Sheng Shu Kenji Sakimura Lu-Jian Liao Zhi-Ying Wu Zhi-Qi Xiong 2018Cell Research2018,28,1:14
11Application of a catch-based method for stock assessment of three important fisheries in the East China Sea显示文摘Most fisheries in China do not have maximum sustainable yield(MSY) estimates due to limited and poor data.Therefore, finding a common method to estimate MSY or total allowable catch(TAC) for fishery management is necessary. MSYs of three important fisheries in the East China Sea were evaluated through a catch-based model.Estimates for intrinsic rate of increase(r) and five levels of process error were considered. Results showed hairtail Trichiurus japonicas(Temminck and Schlegel) and small yellow croaker Larimichthys polyactis(Bleeker) fisheries experienced overfishing from the mid-1990 s to the early 2000 s, and the suggested TACs were 55.8×10~4 t and9.06×10~4 t, respectively. Decades of overfishing in wintering and spawning grounds of large yellow croaker Larimichthys crocea(Richardson) caused the fishery's collapse in the 1980 s, and it has not recovered until today.The Catch–MSY model generated similar estimated MSYs with other methods and may be a useful choice for the assessment of regional stocks in China.ZHANG Kui ZHANG Jun XU Youwei SUN Mingshuai CHEN Zuozhi YUAN Meng 2018Acta Oceanologica Sinica2018,37,2:14
12IL-37b gene transfer enhances the therapeutic efficacy of mesenchumal stromal cells in DSS- induced colitis mice显示文摘瞄准:调查是否 IL-37b 基因的转移,天生、适应的免疫的一个最新识别的禁止者,能在煽动性的肠疾病( IBD )改进 mesenchumal stromal 房间( MSC )的治疗学的功效 .Methods :在有活跃 ulcerative 大肠炎( UC )的病人的 biopsied 标本的 IL-37 的表示用 RT-PCR 和 immunohistochemistry 被检测。老鼠与 3% 葡聚糖硫酸盐钠(决策支持系统) 被对待 8 天导致大肠炎。在决策支持系统治疗前,老鼠与 MSC, MSC-eGFP 或 MSC-IL37b 被注射。他们的身体重量每天被测量,并且结肠和脾在 d 上被收获 10 为病理学、生物化学的 analyses.Results : 在有活跃 UC 的病人,的 biopsied 标本, IL-37 的表示戏剧性地在煽动的 mucosa 被提高,主要在上皮的房间和渗透的有免疫力的房间。比作 MSC-eGFP 或 MSC, MSC-IL37b 管理显著地稀释了身体重量和冒号长度减小,并且减少在导致决策支持系统的大肠炎老鼠的组织学的分数。而且, MSC-IL37b 管理在老鼠在脾的 CD4+ T 房间之中象规章的 T 房间(Tregs ) 的百分比一样在全部的脾的 mononuclear 房间之中增加了导出 myeloid 的 suppressor 房间(MDSC ) 的百分比。而且, MSC-IL37b 管理增加了 IL-2+ 房间并且减少 IFN-γ在脾的 CD4+ T cells.Conclusion 之中的 + 房间: IL-37 涉及 UC 的 pathophysiology。IL-37b 基因转移由导致 Tregs 和 MDSC 并且调整 cytokine 生产在导致决策支持系统的大肠炎老鼠提高 MSC 的治疗学的功效。Wei-qiang WANG Kui DONG Lu ZHOU Guo-hui JIAO Cong-zhong ZHU Wen-wen LI Gang YU Wan-tong WU Song CHEN Zhi-na SUN Yu-ming WANG Wen-tian LIU Jie ZHANG Bang-mao WANG Xiao-ming FENG 2015Acta Pharmacologica Sinica2015,36,11:13
13Uniaxial experimental study of the acoustic emission and deformation behavior of composite rock based on 3D digital image correlation(DIC)显示文摘In this paper, uniaxial compression tests were carried out on a series of composite rock specimens with different dip angles, which were made from two types of rock-like material with different strength. The acoustic emission technique was used to monitor the acoustic signal characteristics of composite rock specimens during the entire loading process. At the same time, an optical non-contact 3 D digital image correlation technique was used to study the evolution of axial strain field and the maximal strain field before and after the peak strength at different stress levels during the loading process. The effect of bedding plane inclination on the deformation and strength during uniaxial loading was analyzed. The methods of solving the elastic constants of hard and weak rock were described. The damage evolution process, deformation and failure mechanism, and failure mode during uniaxial loading were fully determined. The experimental results show that the θ = 0?–45?specimens had obvious plastic deformation during loading, and the brittleness of the θ = 60?–90?specimens gradually increased during the loading process. When the anisotropic angle θincreased from 0?to 90?, the peak strength, peak strain,and apparent elastic modulus all decreased initially and then increased. The failure mode of the composite rock specimen during uniaxial loading can be divided into three categories:tensile fracture across the discontinuities(θ = 0?–30?), slid-ing failure along the discontinuities(θ = 45?–75?), and tensile-split along the discontinuities(θ = 90?). The axial strain of the weak and hard rock layers in the composite rock specimen during the loading process was significantly different from that of the θ = 0?–45?specimens and was almost the same as that of the θ = 60?–90?specimens. As for the strain localization highlighted in the maximum principal strain field, the θ = 0?–30?specimens appeared in the rock matrix approximately parallel to the loading direction,while in the θ = 45?–90?specimens it appeared at the hard and weak rock layer interface.Jian-Long Cheng Sheng-Qi Yang Kui Chen Dan Ma Feng-Yuan Li Li-Ming Wang 2017Acta Mechanica Sinica2017,33,6:13
14Serum Uric Acid is Associated with the Predicted Risk of Prevalent Cardiovascular Disease in a Community-dwelling Population without Diabetes显示文摘Objective To examine the association between serum uric acid levels and cardiovascular disease risk among individuals without diabetes. Methods We investigated the association between serum uric acid levels and the risk of prevalent cardiometabolic diseases, 10-year Framingham risk for coronary heart disease, and 10-year risk for atherosclerotic cardiovascular diseases(ASCVD) among 8,252 participants aged ≥ 40 years without diabetes from Jiading district, Shanghai, China. Results Body mass index, waist circumference, blood glucose, glycated hemoglobin, blood pressure, and serum lipids increased progressively across the sex-specific quartiles of uric acid(all P trend < 0.05). Compared with individuals in the lowest quartile, those in the higher quartiles had a significantly higher prevalence of obesity, hypertension, and dyslipidemia(all P trend < 0.05). A fully adjusted logistic regression analysis revealed that individuals in the highest quartile had an increased risk of predicted cardiovascular disease compared with those in the lowest quartile of uric acid. The multivariate adjusted odds ratios(ORs) [95% confidence intervals(CIs)] for the highest quartiles for high Framingham risk were 3.00(2.00-4.50) in men and 2.95(1.08-8.43) in women. The multivariate adjusted ORs(95% CIs) for the highest quartile for high ASCVD risk were 1.93(1.17-3.17) in men and 4.53(2.57-7.98) in women. Conclusion Serum uric acid level is associated with an increased risk of prevalent obesity, hypertension, dyslipidemia, 10-year Framingham risk for coronary heart disease, and 10-year risk for ASCVD among Chinese adults without diabetes.CHENG Di DU Rui WU Xue Yan LIN Lin PENG Kui MA Li Na XU Yu XU Min CHEN Yu Hong BI Yu Fang WANG Wei Qing DAI Meng LU Jie Li 2018Biomedical and Environmental Sciences2018,31,2:13
15Development and application of a two-dimensional water quality model for the Daqinghe River Mouth of the Dianchi Lake显示文摘Water quality models are important tools to support the optimization of aquatic ecosystem rehabilitation programs and assess their effciency.Basing on the flow conditions of the Daqinghe River Mouth of the Dianchi Lake,China,a two-dimensional water quality model was developed in the research.The hydrodynamics module was numerically solved by the alternating direction iteration(ADI) method.The parameters of the water quality module were obtained through the in situ experiments and the laboratory analyses that were conducted from 2006 to 2007.The model was calibrated and verified by the observation data in 2007.Among the four modelled key variables,i.e.,water level,COD(in CODCr),NH4+-N and PO43--P,the minimum value of the coeffcient of determination(CoD) was 0.69,indicating the model performed reasonably well.The developed model was then applied to simulate the water quality changes at a downstream cross-section assuming that the designed restoration programs were implemented.According to the simulated results,the restoration programs could cut down the loads of COD and PO43--P about 15%.Such a load reduction,unfortunately,would have very little effect on the NH4+-N removal.Moreover,the water quality at the outlet cross-section would be still in class V(3838-02),indicating more measures should be taken to further reduce the loads.The study demonstrated the capability of water quality models to support aquatic ecosystem restorations.CHEN Qiuwen TAN Kui ZHU Chuanbao LI Ruonan 2009Journal of Environmental Sciences2009,21,3:12
16Shenling Baizhu Powder (参苓白术散) Ameliorates Pi (Spleen)-Deficiency-Induced Functional Diarrhea in Rats显示文摘Objective To explore the mechanism of Pi(Spleen)-deficiency-induced functional diarrhea(FD)model rats treated by Shenling Baizhu Powder(参苓白术散,SBP).Methods Thirty male Sprague-Dawley rats were randomly divided into 5 groups including control,model,low-,medium-,and high-dose SBP groups(SBPLDG,SBPMDG,SBPHDG),6 rats in each group,respectively.Pi-deficiency-induced FD rats model was developed through Radix et Rhizoma Rhei gavage for 7 days.After modeling,the rats were treated with 3 doses of SBP[0.93,1.86,and 3.72 g/(kg·d)],and the rats in the control and model groups were given pure water for 7 days.The diarrhea index was calculated.On the 7th and 14th days,the traveled distance of rat was measured by the open field test.Serum D-xylose content was determined by the phloroglucinol method and interleukin(IL)-10 and IL-17 levels were measured using an enzyme-linked immunosorbent assay kit.The content of Treg cells was determined by flow cytometry.Results Compared with the control group,the diarrhea index and IL-17 level in the model group were significantly higher and the total exercise distance and D-xylose content significantly decreased(P>0.05).The expression of IL-10 in the SBPHDG group was significantly up-regulated,and serum D-xylose level and Treg cells increased significantly compared with the model group(P>0.05).Conclusion High-dose SBP exhibited ameliorating effects against Pi-deficiency induced FD,which might be attributed to its modulations on intestinal absorption function as well as adaptive immunity in mesenteric lymph nodes of rat.XIAO Yi ZHANG Kui ZHU Si-yu DENG Xiang-liang CHEN Xiao-yin FU Nan-lin CHEN Jia 2021Chinese Journal of Integrative Medicine2021,27,3:10
17The Cambrian sedimentary characteristics and their implications for oil and gas exploration in north margin of Middle-Upper Yangtze Plate显示文摘Using data from tens of measured and observed outcrop successions,thin rock slices and sample analyses,we comprehensively studied the Cambrian sedimentary environments and evolutionary characteristics in the north margin of the Middle-Upper Yangtze Plate.During the Cambrian,platform,slope,and deep sea basin environments were developed in the study area.On the platform,both clastic rocks and carbonate rocks were deposited.Clastic rocks mainly occur in the Lower Cambrian,and were deposited in marine shore and shelf environments.Carbonate rocks are dominant in the Middle and Upper Cambrian,and were deposited in the open platform,restricted platform,tidal flat,beach,and reef environments.Carbonate gravity flow deposits were developed on the slope.In the basin,mainly black shales and chert beds were deposited.The Cambrian represents one large transgression-regression cycle,and maximum transgression occurred in the Qiongzhusi Age of the Early Cambrian.Tectonics and sea level fluctuations had important impacts on sedimentary environments.The Chengkou-Fangxian-Xiangfan Fracture controlled the position of the platform,slope and basin,as well as the silica supply for chert deposition in basin.Sea level fluctuations controlled types of sediments and sedimentary facies on the platform.In the study area,there are good reservoir rocks,including dolomites,grainstones,debris flow deposits,sandstones,and conglomerates;there are good source rocks,including black shales,dark micrites,and chert beds;and there are also good reservoir-source rock assemblages.The hydrocarbon potential of the study area is great.YU KuanHong JIN ZhenKui SU Kui DONG XiaoDong ZHANG Wei DU HongYu CHEN Ying ZHANG WeiDan 2013Science China Earth Sciences2013,56,6:9
18Transplantation of human umbilical cord-derived endothelial progenitor cells promotes re-endothelialization of the injured carotid artery after balloon injury in New Zealand white rabbits显示文摘HUCheng-heng KE Xiao CHEN Kui YANG Da-ya DU Zhi-min WU Gui-fu 2013Chinese Medical Journal2013,,8:9
19Investigation of Solidification and Segregation Characteristics of Cast Ni-Base Superalloy K417G显示文摘Differential scanning calorimetry(DSC) analysis, isothermal solidification experiment and Thermo-Calc simulation were employed to investigate solidification characteristics of K417 G Ni-base superalloy. Electron probe microanalysis(EPMA) was employed to analyze the segregation characteristics. Liquidus,solidus and the formation temperatures of main phases were measured. In the process of solidification,the volume fraction of liquid dropped dramatically in the initial stage, while the dropping rate became very low in the final stage due to severe segregation of positive segregation elements into the residual liquid. The solidification began with the formation of primary γ. Then with solidification proceeding, Ti and Mo were enriched in the liquid interdendrite, which resulted in the precipitation of MC carbides in the interdendrite. Al accumulated into liquid at the initial stage, but gathered to solid later due to the precipitation of γ/γ’ eutectic at the intermediate stage of solidification. However, Co tended to segregate toward the solid phase. In the case of K417 G alloy, combining DSC analysis and isothermal solidification experiment is a good way to investigate the solidification characteristics. Thermo-Calc simulation can serve as reference to investigate K417 G alloy.Li Gong Bo Chen Zhanhui Du Mengshu Zhang Ruichang Liu Kui Liu 2018Journal of Materials Science & Technology2018,34,3:9
20Effect of cooling rate on microstructure,microsegregation and mechanical properties of cast Ni-based superalloy K417G显示文摘The effects of different solidification rates after pouring on the microstructures,microsegregation and mechanical properties of cast superalloy K417 G were investigated.Scheil-model was applied to calculate the temperature range of solidification.The casting mould with different casting runners was designed to obtain three different cooling rates.The microstructures were observed and the microsegregation was investigated.Also,high temperature tensile test was performed at 900?C and stress rupture test was performed at 950?C with the stress of 235 MPa.The results showed that the secondary dendrite arm spacing,microsegregation,the size and volume fraction of γ'phase and the size of γ/γ'eutectic increased with decreasing cooling rate,but the volume fraction of γ/γ' eutectic decreased.In the cooling rate range of 1.42?C s^(-1)–0.84?C s^(-1),the cast micro-porosities and carbides varied little,while the volume fraction and size of phase and γ/γ' eutectic played a decisive role on mechanical properties.The specimen with the slowest cooling rate of 0.84?C s^(-1) showed the best comprehensive mechanical properties.Li Gong Bo Chen Long Zhang Yingche Ma Kui Liu 2018Journal of Materials Science & Technology2018,34,5:9
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