维普中文期刊产品整合服务
227篇 您的检索式:作者名="LI Tuo"
    题名 作者 年代 出处 被引量
1Physiological Responses of Limonium aureum Seeds to Ultra-drying显示文摘Limonium aureum (L.) 的种子希尔,与硅石胶化在一只干燥集装箱从 8.92% 被弄干到 2.88%moisture 内容。在以后极端弄干种子被加速( 50 deg C , 1 个月),并且一些生理的索引包括电的传导性,脱氢酶活动,超级氧化物 dismutase (草皮),过氧化物酶(邮政部门), glu-tathionereductase ( GR ), ascorbate 过氧化物酶( APX ),过氧化氢酶(猫)( MDA ),不稳定的醛和 malondialdehyde 被测试。结果显示那脱氢酶,邮政部门,草皮, GR, APX 和极端干燥的种子的猫活动比控制种子高,当不稳定的醛和 malondialdehydewere 比对照组降低时。结果建议那极端弄干为维持 L 的活力是有益的。在高水平的 aureum 种子。因此, L。aureum 种子能被存储 underultra 干燥的条件。Yi Li Hu-Yuan Feng Tuo Chen Xiao-Ming Yang Li-Zhe An 2007Journal of Integrative Plant Biology2007,49,5:22
2Characteristics of and strategies for patients with severe burn-blast combined injury显示文摘背景严重灼伤强风联合了损害是对为它的高死亡的医疗队的大挑战。这研究的目的是阐明损害并且到现在的临床的特征我们有严重灼伤强风的五个病人联合了的如此的 cases.Methods 的治疗上的临床的经验损害进入我们在 2005 年 6 月 7 日 77 个小时损害以后的医院。灼伤程度从 80% ~ 97%(89.6% 鞪? 亘吗??CHAI Jia-ke SHENG Zhi-yong LU Jiang-yang WEN Zhong-guang YANG Hong-ming JIA Xiao-ming LI Li-gen CAO Wei-hong HAO Dai-feng SHEN Chuan-an TUO Xiao-ye LIANG Li-ming WANG Shu-jun 2007Chinese Medical Journal2007,,20:17
3Relationship between intestinal microbial dysbiosis and primary liver cancer显示文摘Background: Intestinal microbial dysbiosis is involved in liver disease pathogenesis. However, its role in primary liver cancer(PLC), particularly in hepatocarcinogenesis remains unclear. The present study aimed to study the changes in intestinal flora at various stages of PLC and clarify the relationship between intestinal microbes and PLC. Methods: Twenty-four patients with PLC(PLC group), 24 patients with liver cirrhosis(LC group), and 23 healthy control individuals(HC group) were enrolled from October 2016 to October 2017. Stool specimens of the participants were collected and the genomic DNA of fecal bacteria was isolated. High-throughput pyrosequencing of 16 S r DNA was used to identify differences in gut bacterial diversity among HC, LC, and PLC groups. We also analyzed the relationship between clinical factors and intestinal microorganisms in LC and PLC groups. Results: Diversity of Firmicutes tended to decrease from the HC to LC and PLC groups at the phylum level. Among species, Enterobacter ludwigii displayed an increasing trend in the PLC group, wherein the relative abundance of Enterobacter ludwigii in the PLC group was 100 times greater than that in the HC and LC groups. The ratio of Firmicutes/Bacteroidetes was significantly decreased with the disease progression. In addition, the linear discriminant analysis effect size method indicated that Clostridia were predominant in the gut microbiota of the HC group, whereas Enterococcaceae, Lactobacillales, Bacilli and Gammaproteobacteria may be used as diagnostic markers of PLC. Redundancy analysis showed a correlation between intestinal microbial diversity and clinical factors AST, ALT, and AFP. Veillonella showed a significant positive correlation with AFP in the PLC group, whereas Subdoligranulum showed a negative correlation with AFP. Conclusions: This study indicates that dysbiosis of the gut microbiota might be involved in PLC development and progression.Lei Zhang Yong-Na Wu Tuo Chen Cheng-Hui Ren Xun Li Guang-Xiu Liu 2019Hepatobiliary & Pancreatic Diseases International2019,18,2:16
4Ferroptosis:mechanisms and links with diseases显示文摘Ferroptosis is an iron-dependent cell death,which is different from apoptosis,necrosis,autophagy,and other forms of cell death.The process of feroptotic cell death is defined by the accumulation of lethal lipid species derived from the peroxidation of lipids,which can be prevented by iron chelators(e.g.deferiprone,deferoxamine)and small lipophilic antioxidants(e.g,ferrostatin,liproxstatin).This review summarizes current knowledge about the regulatory mechanism of ferroptosis and its association withseveral pathways,including iron,lipid,and cysteine metabolism.We have further discussed the contribution of ferroptosis to thepathogenesis of several diseases such as cancer,ischemia/reperfusion,and various neurodegenerative diseases(e.g.Alzheimersdisease and Parkinson's disease),and evaluated the therapeutic applications of ferroptosis inhibitors in clinics.Hong-fa Yan Ting Zou Qing-zhang Tuo Shuo Xu Hua Li Abdel Ali Belaidi Peng Lei 2021Signal Transduction and Targeted Therapy2021,6,3:16
5Characterization of Nestin-positive stem Leydig cells as a potential source for the treatment of testicular Leydig cell dysfunction显示文摘Mei Hua Jiang Bing Cai Ying Tuo Jiancheng Wang Zhi Jun Zang Xiang'an Tu Yong Gao Zhijian Su Weiqiang Li Guilan Li Min Zhang Jianwei Jiao Zi Wan Chunhua Deng Bruce T Lahn Andy Peng Xiang 2014Cell Research2014,24,12:14
6In vitro chondrogenesis of the goat bone marrow mesenchymal stem cells directed by chondrocytes in monolayer and 3-dimetional indirect co-culture system显示文摘背景软骨损害为内在的新生有一个很差的能力。为使用的软骨修理的基于房间的治疗策略区分了骨头髓间充质的干细胞(BMSC ) 然而,是软骨的修理的一条有希望的途径。这研究被瞄准在 Transwell 合作文化系统和 poly-laetide-co-glycolide (PLGA ) scaffolds.Methods 探索山羊 BMSC 的 chondrogenic 潜力 BMSC 从山羊被孤立肠骨的冠当 chondrocytes 从山羊的家被获得时上次肋骨的软骨。在 Transwell 合作文化系统,与 chondrocytes co 有教养的 BMSC 作为组 A 被设计,而山羊与 chondrogenic 媒介导致的 BMSC 是组 B。组 A 和 B 是试验性的组,当仅仅包含了 BMSC 的组 C 是控制组时。在 PLGA 脚手架合作文化系统, BMSC 被播种进 PLGA 脚手架,它在 24 井板中被推迟,并且控制组被 chondrocytes 的存在或缺席在 24 井板的底部建立。染色的 Toluidine 蓝色,染色的 Alcian 蓝色,骨胶原 immunofluoresence ,骨胶原免疫化学的染色,骨胶原,骨胶原, COL2a Q-PCR 和 osteopontin Q-PCR 被用来检验 chondrogenic 条件以及 chondrogenic 和从山羊骨头髓的aspirates 孤立的 osteogenic genes.Results 房间的表情很快增殖了并且在经过 4 获得了干细胞的特征。然而, chondrocytes 的区别不在经过 3 是明显的。从染色的 Toluidine 蓝色的结果,骨胶原 immunofluoresence 和 PCR 在 Transwell 合作文化系统和 PLGA 脚手架显示出 BMSC 的转变到 chondrocytes。尽管软骨基因表达式在 chondrogenesis 组和合作文化系统被升级, osteopontin 基因表达式,代表 osteogenic 水平,也是 Transwell 合作文化系统和 PLGA 脚手架合作文化系统能支持的 up-regulated.Conclusions 山羊的 BMSC 的 chondrogenic 区别,当在 Transwell 合作文化系统的起来调整的 osteopontin 基因表示暗示 BMSC 的 osteogenic 潜力时。LI Jian-wei GUO Xiao-lei HE Chun-la TUO Yong-hua WANG Zhao WEN Jun JIN Dan 2011Chinese Medical Journal2011,,19:13
7Relationship Between Serum DNA Replication, Clinicopathological Characteristics and Prognosis of Hepatitis B Virus-associated Glomerulonephritis with Severe Proteinuria by Lamivudine Plus Adefovir Dipivoxil Combination Therapy显示文摘Objective To explore the relationship between HBV DNA and the clinical manifestations, pathological types, injury severity, and prognosis with HBV-GN. Methods 102 patients with HBV-GN were divided into 3 groups, according to the serum titer of the HBV DNA. 24-h urine protein excretion, and other parameters were measured. Renal biopsy were performed. The association between HBV DNA and the pathological stage of membranous nephropathy was analyzed in 78 patients with HBV-MN. 24-h urine protein excretion was used for the evaluation of the prognosis, and the relationship between HBV DNA and prognosis were analyzed. Results Several findings were demonstrated with the increase of serum HBV DNA: 24-h urine protein excretion, plasma cholesterol, and triglycerides increased significantly(P<0.05), while the plasma level of albumin decreased significantly(P<0.05); The changes of serum creatinine, C3 and C4 were found but no statistical significance. Glomerular deposition of HBVAg increased, and the pathological injury was more severe. The clinical remission rate was lower in the high replication group after treatment as compared with the low replication group(P<0.01). Conclusion With the increase of serum HBV DNA, the urine protein excretion and the kidney injury were more severe, and the clinical remission rate was decreased.JIANG Wei LIU Tuo DONG Hui XU Yan LIU Li Qiu GUAN Guang Ju LIU Xiang Chun 2015Biomedical and Environmental Sciences2015,28,3:13
8Effect of Root Architecture on Structural Stability and Erodibility of Topsoils during Concentrated Flow in Hilly Loess Plateau显示文摘Traditional vegetation techniques for the control of concentrated flow erosion are widely recognized, whereas only a few studies have experimentally investigated the impacts of belowground roots on the erodibility of topsoils in semi-arid areas. To quantify the effects of root architectures on soil erodibility and its relevant structural properties, simulated flow experiments were conducted at six-week intervals from 18 July to 20 October in 2012 in the hilly Loess Plateau. Five treatments were: 1) bare(control), 2) purple alfalfa(Medicago sativa), representing tap roots(T), 3) switchgrass(Panicum virgatum), representing fibrous roots(F), 4) purple alfalfa and switchgrass, representing both tap and fibrous roots(T + F), and 5) natural recovery(N). For each treatment, soil structural properties and root characteristics were measured at an interval of six weeks. Soil anti-scouribility was calculated. Results showed that grass planting slightly reduced soil bulk density, but increased soil aggregate content by 19.1%, 10.6%, 28.5%, and 41.2% in the treatments T, F, T + F, and N, respectively. Soil shear strength(cohesion and angle of internal friction(φ)) significantly increased after the grass was planted. As roots grew, soil cohesion increased by 115.2%–135.5%, while soil disintegration rate decreased by 39.0%–58.1% in the 21 th week compared with the recorded value in the 9th week. Meanwhile, root density and root surface area density increased by 64.0%–104.7% and 75.9%–157.1%, respectively. No significant differences in soil anti-scouribility were observed between the treatments of T and F or of T + F and N, but the treatments of T + F and N performed more effectively than T or F treatment alone in retarding concentrated flow. Soil aggregation and root surface-area density explained the observed soil anti-scouribility during concentrated flow well for the different treatments. This result proved that the restoration of natural vegetation might be the most appropriate strategy in soil reinforcement in the hilly Loess Plateau.LI Qiang LIU Guobin ZHANG Zheng TUO Dengfeng XU Mingxiang 2015Chinese Geographical Science2015,25,6:13
9Insight-HXMT observations of the first binary neutron star merger GW170817显示文摘Finding the electromagnetic(EM) counterpart of binary compact star merger, especially the binary neutron star(BNS) merger,is critically important for gravitational wave(GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017,Advanced LIGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart,GRB 170817 A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope(HE) onboard Insight-HXMT(Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart(SSS17 a/AT2017 gfo) with very large collection area(~1000 cm^2) and microsecond time resolution in 0.2-5 MeV. In addition,Insight-HXMT quickly implemented a Target of Opportunity(ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy(0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817 A. Meanwhile,Insight-HXMT/HE provides one of the most stringent constraints(~10^(-7) to 10^(-6) erg/cm^2/s) for both GRB170817 A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event.TiPei Li ShaoLin Xiong ShuangNan Zhang FangJun Lu LiMing Song XueLei Cao Zhi Chang Gang Chen Li Chen TianXiang Chen Yong Chen YiBao Chen YuPeng Chen Wei Cui WeiWei Cui JingKang Deng YongWei Dong YuanYuan Du MinXue Fu GuanHua Gao He Gao Min Gao MingYu Ge YuDong Gu Ju Guan ChengCheng Guo DaWei Han Wei Hu Yue Huang Jia Huo ShuMei Jia LuHua Jiang WeiChun Jiang Jing Jin YongJie Jin Bing Li ChengKui Li Gang Li MaoShun Li Wei Li Xian Li XiaoBo Li XuFang Li YanGuo Li ZiJian Li ZhengWei Li XiaoHua Liang JinYuan Liao CongZhan Liu GuoQing Liu HongWei Liu ShaoZhen Liu XiaoJing Liu Yuan Liu YiNong Liu Bo Lu XueFeng Lu Tao Luo Xiang Ma Bin Meng Yi Nang JianYin Nie Ge OU JinLu Qu Na Sai Liang Sun Yin Tan Lian Tao WenHui Tao YouLi Tuo GuoFeng Wang HuanYu Wang Juan Wang WenShuai Wang YuSa Wang XiangYang Wen BoBing WU Mei Wu GuangCheng Xiao He Xu YuPeng Xu LinLi Yan JiaWei Yang Sheng Yang YanJi Yang AiMei Zhang ChunLei Zhang ChengMo Zhang Fan Zhang HongMei Zhang Juan Zhang Qiang Zhang Shu Zhang Tong Zhang Wei Zhang WanChang Zhang WenZhao Zhang Yi Zhang Yue Zhang YiFei Zhang YongJie Zhang Zhao Zhang ZiLiang Zhang HaiSheng Zhao JianLing Zhao XiaoFan Zhao ShiJie Zheng Yue Zhu YuXuan Zhu ChangLin Zou 2018Science China(Physics,Mechanics & Astronomy)2018,61,3:12
10Overview of organic anion transporters and organic anion transporter polypeptides and their roles in the liver显示文摘Organic anion transporters(OATs)and organic anion transporter polypeptides(OATPs)are classified within two SLC superfamilies,namely,the SLC22A superfamily and the SLCO superfamily(formerly the SLC21A family),respectively.They are expressed in many tissues,such as the liver and kidney,and mediate the absorption and excretion of many endogenous and exogenous substances,including various drugs.Most are composed of 12 transmembrane polypeptide chains with the C-terminus and the N-terminus located in the cell cytoplasm.OATs and OATPs are abundantly expressed in the liver,where they mainly promote the uptake of various endogenous substrates such as bile acids and various exogenous drugs such as antifibrotic and anticancer drugs.However,differences in the locations of glycosylation sites,phosphorylation sites,and amino acids in the OAT and OATP structures lead to different substrates being transported to the liver,which ultimately results in their different roles in the liver.To date,few articles have addressed these aspects of OAT and OATP structures,and we study further the similarities and differences in their structures,tissue distribution,substrates,and roles in liver diseases.Ting-Ting Li Jia-Xing An Jing-Yu Xu Bi-Guang Tuo 2019World Journal of Clinical Cases2019,7,23:12
11Unfolding analysis of LaBr3:Ce gamma spectrum with a detector response matrix constructing algorithm based on energy resolution calibration显示文摘With respect to the gamma spectrum, the energy resolution improves with increase in energy. The counts of full energy peak change with energy, and this approximately complies with the Gaussian distribution. This study mainly examines a method to deconvolve the LaBr_3:Ce gamma spectrum with a detector response matrix constructing algorithm based on energy resolution calibration.In the algorithm, the full width at half maximum(FWHM)of full energy peak was calculated by the cubic spline interpolation algorithm and calibrated by a square root of a quadratic function that changes with the energy. Additionally, the detector response matrix was constructed to deconvolve the gamma spectrum. Furthermore, an improved SNIP algorithm was proposed to eliminate the background. In the experiment, several independent peaks of ^(152)Eu,^(137)Cs, and ^(60)Co sources were detected by a LaBr_3:Ce scintillator that were selected to calibrate the energy resolution. The Boosted Gold algorithm was applied to deconvolve the gamma spectrum. The results showed that the peak position difference between the experiment and the deconvolution was within ± 2 channels and the relative error of peak area was approximately within 0.96–6.74%. Finally, a ^(133) Ba spectrum was deconvolved to verify the efficiency and accuracy of the algorithm in unfolding the overlapped peaks.Rui Shi Xian-Guo Tuo Huai-Liang Li Yang-Yang Xu Fan-Rong Shi Jian-Bo Yang Yong Luo 2018Nuclear Science and Techniques2018,29,1:11
12Treatment strategies for mass burn casualties显示文摘因为很多严重受伤的病人在一短时间以内被送,背景集体灼伤伤亡总是是对一个医疗队的大挑战。通常,高死亡正在逼近。从牺牲品的成功的治疗获得的经验可能在在武装 conflict.Methods 指导集体伤亡的照顾是有用的在单个批的 35 个灼伤牺牲品,坐飞机不停地被转移并且从一个远省的高速公路,被承认 48 个小时损害以后。所有病人与吝啬的年龄是男性的(22.4 ? 蟠 ?(CHAI Jia-ke SHENG Zhi-yong YANG Hong-ming HAO Dai-feng SHEN Chuan-an JIA Xiao-ming LI Feng JING Sa LI Li-gen SONG Hui-feng JIA Chi-yu TUO Xiao-ye SUN Tian-jun HU Quan 2009Chinese Medical Journal2009,,5:10
13Features of colorectal cancer in China stratified by anatomic sites:A hospital-based study conducted in university-affiliated hospitals from 2014 to 2018显示文摘Objective:The clinical and biological characteristics of colorectal cancer have been found to differ depending on the anatomic site of the cancer.However,for Chinese patients,there is limited information on the proportion of cases at each site and the related features.In this study,we explored the location,distribution and other features of colorectal cancers at each anatomic site in Chinese patients.Methods:We conducted a hospital-based study using hospitalization summary reports from 10 Peking University-affiliated hospitals from 2014 to 2018;the reports covered a total of 2,097,347 hospitalizations.Incident cases were chosen as the study population,and their epidemiological features were further analyzed.Results:A total of 20,739 colorectal cancer patients were identified.Rectum was the most common location(48.3%)of the cancer,whereas the proportions of patients with distal and proximal colon cancer were 24.5%and18.6%,respectively.Patients with rectal cancer were predominantly male and were the youngest for all anatomical sites(each P<0.001).The highest proportion of emergency admissions,the longest hospital stays and the highest hospitalization costs were found in patients with proximal colon cancer(each P<0.001).The proximal colon cancer subgroup included the highest proportions of patients with medical histories of cholecystectomy,cholecystolithiasis and/or gallbladder polyps and appendectomy(P=0.009,P<0.001 and P<0.001,respectively).The distal colon cancer subgroup included the highest proportions of patients with medical histories of diabetes and hypertension(P<0.001,respectively).Conclusions:The patterns of colorectal cancer observed in this study differ from those reported for Western patients and show a significantly higher proportion of patients with rectal cancer.Different epidemiological features were also found based on anatomic sites.Further studies based on tumor location should be conducted to facilitate more accurate screening and treatment.Ruize Qu Yanpeng Ma Liyuan Tao Xiaoyuan Bao Xin Zhou Bingyan Wang Fei Li Siyi Lu Lin Tuo Siyan Zhan Zhipeng Zhang Wei Fu 2021Chinese Journal of Cancer Research2021,33,4:10
14Caveolae and caveolin-1 mediate endocytosis and transcytosis of oxidized low density lipoprotein in endothelial cells显示文摘Shao-wei SUN Xu-yu ZU Qin-hui TUO Lin-xi CHEN Xiao-yong LEI Kai LI Chao-ke TANG Duan-fang LIAO 2010Acta Pharmacologica Sinica2010,31,10:9
15Preparation of ternary Cr_2 O_3-SiC-TiO_2 composites for the photocatalytic production of hydrogen显示文摘Novel ternary Cr 2 O 3 -SiC-TiO 2 composites were synthesized by implanting Cr 3+ into SiC-TiO 2 via sol-gel and impregnation approaches. The results from X-ray diffraction, scanning electron microscopy and trans- mission electron microscopy show that the Cr 3+ species were doped onto the surface of the SiC-TiO 2 carrier. The diffuse reflectance ultraviolet-visible absorption spectra revealed that the absorption edges of the ternary Cr 2 O 3 -SiC-TiO 2 composites were gradually shifted red with increasing chromium content. The luminescence intensities of the composites decreased with increasing doped Cr 3+ content due to the reduction in the number of recombination sites of electron-hole pairs. The ternary Cr 2 O 3 -SiC-TiO 2 com- posites showed high hydrogen-producing activities, which probably results from the formation of donor levels of the Cr 3+ species in the forbidden band of the SiC semiconductor.Yaojun Zhang Yong Xu Tuo Li Yachao Wang 2012Particuology2012,10,1:8
16Diacylglycerol Compounds from Barks of Betula platyphylla with Inhibitory Activity against Acyltransferase显示文摘Objective To identify the active compounds from the barks of Betula platyphylla for inhibitory on diacylglycerol acyltransferase(DGAT1).Methods Bioassay-guided fractionation resulted in the isolation of DGAT1 inhibitory activity of lupane triterpenes.Results Ten compounds were identified as lupenone(1),lupeol(2),betulinic acid(3),betulinaldehyde(4),betulin(5),3-deoxybetulonic acid(6),glochidonol(7),lup-20/29-ene-1β/3β-diol(8),3α-hydroxy-lup-20(29)-en-23,28-dioic acid(9),and 3α,11α-dihydroxy-23-oxo-lup-20(29)-en-28-oic acid(10).Compounds 3-6,9,and 10 inhibited DGAT1 with IC50 values ranging from(11.2±0.3)to(38.6±1.2)μmol/L.Conclusion Compounds 6,9,and 10 are first isolated from the barks of B.platyphylla.,and compounds 3-6,9,and 10 from the barks of B.platyphylla are responsible for the inhibition on DGAT1.Nan Zhang Na Li Ya-nan Sun Jia-lin Li Shan-shan Xing Zhen-dong Tuo Long Cui 2014Chinese Herbal Medicines2014,6,2:8
17239Pu alpha spectrum analysis based on PIPS detector response function and variations with vacuum and distance显示文摘Effect factors of the absorption of the source,air,entrance window,and dead layer of a detector must be considered in the measurement of monoenergetic alpha particles,along with statistical noise and other factors that collectively cause the alpha spectrum to exhibit a well-known low-energy tail.Therefore,the estabUshment of an alpha spectrum detector response function from the perspective of a signaling system must consider the various factors mentioned above.The detector response function is the convolution of an alphaparticle pulse function,two exponential functions,and a Gaussian function,followed by calculation of the parameters of the detector response function using the weighted leastsquares fitting method as proposed in this paper.In our experiment,^(239)Pu alpha spectra were measured by a highresolution,passivated implanted planar silicon(PIPS)detector at 10 levels of vacuum and 10 source-detector distances.The spectrum-fitting results were excellent as evaluated by reduced Chi-square(x^2) and correlation coefficients.Finally,the variation of parameters with vacuum level and source-detector distance was studied.Results demonstrate that σ,τ_1,and τ_2 exhibit no obvious trend of variation with vacuum in the range 2000-20,000 mTorr,and at a confidence level of 95%,the values of τ_1 and τ_2 decline in a similar fashion with source-detector distance by the power exponential function,while the value of a declines linearly.Rui Shi Xian-Guo Tuo Huai-Liang Li Jian-Bo Yang Yi Cheng Hong-Long Zheng 2017Nuclear Science and Techniques2017,28,1:7
18INFLUENCE OF STRUCTURE ON HYDRAULIC CHARACTERISTICS OF T SHAPE FISHWAY显示文摘While dams cut off the migratory route of fish, and affect their growth and breeding, fishways are built to restore the connectivity of rivers and facilitate the life cycle of these migratory fish. This paper proposes a new kind of fishway called the 'T shape fishway', and studies it by using both numerical simulations and physical experimental methods with the aim to design a fishway in China for migratory fish with swimming and jumping capability much poorer, such as schizothorax davidi and schizothorax prenanti, as compared with migratory fish in other places of the world, like trout and salmon. It is indicated that the range of velocity in each regular pool of the T shape fishway is from 0.42 m/s to 1.22 m/s when the flow discharge Q is 350 L/s, and there are no large vortex zones found there. This study shows that the T shape fishway can meet the requirements of these migratory fish quite well in terms of velocity and flow patterns in China.MAO Xi FU Jing-jing TUO You-cai AN Rui-dong LI Jia 2012Journal of Hydrodynamics2012,24,5:7
19Effect of total dissolved gas supersaturated water on early life of David's schizothoracin (Schizothorax davidi)显示文摘The effect of total dissolved gas (TDG) supersaturation on fish living downstream of dams is one of the main ecological risks of high dam construction. A strategy for mitigating the negative effects is needed urgently since many high dams are under construction in the upper reaches of the Yangtze River in China. Experiments on the hatching process of David's schizothoracin were carried out and the results show that the hatching rate decreased with increasing TDG levels, and that most eggs hatched within a very short time in the higher TDG saturation groups. By using a stereomicroscope, damages to the head, yolk sac, body, anus, etc. were found in larvae which hatched in TDG supersaturated water. Results show that the lesion rate increased with increasing TDG levels. Furthermore, 7-d-old David's schizothoracin were exposed to TDG supersaturated water levels of 100%, 105%, 110%, 115%, 120%, 125%, 130%, 135%, and 140% for testing their tolerance to TDG supersaturation. We found that the median lethal concentrations (LC50 ) for 13, 14, 20, 35, 52, 73, and 96 h exposure were 138%, 138%, 134%, 130%, 129%, 128%, and 126%, respectively. The median lethal times (LT50 ) were 7.49, 11.04, 19.25, and 35.38 h for exposure to water with TDG levels of 145%, 140%, 135%, and 130%, respectively.Rui-feng LIANG Bo LI Ke-feng LI You-cai TUO 2013Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2013,14,7:6
20Whole-exome sequencing identifies novel mutations in genes responsible for retinitis pigmentosa in 2 nonconsanguineous Chinese families显示文摘AIM: To detect the pathogenetic mutations responsible for nonsyndromic autosomal recessive retinitis pigmentosa(RP) in 2 nonconsanguineous Chinese families. METHODS: The clinical data, including detailed medical history, best corrected visual acuity(BCVA), slit-lamp biomicroscope examination, fundus photography, optical coherence tomography, static perimetry, and full field electroretinogram, were collected from the members of 2 nonconsanguineous Chinese families preliminarily diagnosed with RP. Genomic DNA was extracted from the probands and other available family members;wholeexome sequencing was conducted with the DNA samples provided by the probands, and all mutations detected by whole-exome sequencing were verified using Sanger sequencing in the probands and the other available family members. The verified novel mutations were further sequenced in 192 ethnicity matched healthy controls.RESULTS: The patients from the 2 families exhibited the typical symptoms of RP, including night blindness and progressive constriction of the visual field, and the fundus examinations showed attenuated retinal arterioles, peripheral bone spicule pigment deposits, and waxy optic discs. Whole-exome sequencing revealed a novel nonsense mutation in FAM161 A(c.943 A>T, p.Lys315*) and compound heterozygous mutations in RP1 L1(c.56 C>A, p.Pro19 His;c.5470 C>T, p.Gln1824*). The nonsense c.5470 C>T, p.Gln1824* mutation was novel. All mutations were verified by Sanger sequencing. The mutation p.Lys315* in FAM161A co-segregated with the phenotype, and all the nonsense mutations were absent from the ethnicity matched healthy controls and all available databases.CONCLUSION: We identify 2 novel mutations in genes responsible for autosomal recessive RP, and the mutation in FAM161A is reported for the first time in a Chinese population. Our result not only enriches the knowledge of the mutation frequency and spectrum in the genes responsible for nonsyndromic RP but also provides a new target for future gene therapy.Yan-Shan Hu Hui Song Yin Li Zi-Yun Xiao Tuo Li 2019International Journal of Ophthalmology(English edition)2019,12,6:6
返回顶部 每页显示:
共12页 首页 上一页 第1页 下一页 末页 /12 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费