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2120篇 您的检索式:作者名="Liang Shi"
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1Chinese consensus guidelines for diagnosis and management of gastrointestinal stromal tumor显示文摘In order to further promote the standardization of diagnosis and treatment of gastrointestinal stromal tumor(GIST) in China, the members of Chinese Society of Clinical Oncology(CSCO) Expert Committee on GIST thoroughly discussed the key contents of the consensus guidelines, and voted on the controversial issue. In final, the Chinese consensus guidelines for the diagnosis and management of GIST(2017 edition) was formed on the basis of 2013 edition consensus guidelines, which is hereby announced. The consensus included the pathological diagnosis,recurrence risk classification evaluation, targeted agent therapy, surgery and principles of surveillance of GIST.jian li yingjiang ye jian wang bo zhang shukui qin yingqiang shi yulong he xiaobo liang xiufeng liu ye zhou xin wu xinhua zhang ming wang zhidong gao tianlong lin hui cao lin shen 2017Chinese Journal of Cancer Research2017,29,4:104
2Clinical characteristics, diagnosis and management of respiratory distress syndrome in full-term neonates显示文摘然而,背景呼吸悲痛症候群(RDS ) 是新生的呼吸失败和新生的死亡的最普通的原因之一它的临床的特征与早熟的 RDS,和这些特征很不同很好没迄今为止被记录。这研究是在完整术语的出生不满一月的婴儿调查致病,临床的特征和 RDS 的管理策略,与开发为改进在有 RDS.Methods 的完整术语的出生不满一月的婴儿的结果的一个工作协议的目的有 RDS 的 125 个完整术语的婴儿的一个总数在这研究被注册。他们的临床并且实验室数据为分析 125 个案例包括了的完整术语的新生的 RDS.Results (1 ) 的特征被收集 94 男性和 31 个女婴儿,阴道交货在 45 种情况中发生在 80 种情况和剖腹产中。(2 ) RDS 的发作时间是(3.11 牧潯敶吗?LIU Jing SHI Yun DONG Jian-ying ZHENG Tian LI Jing-ya LU Li-li LIU Jing-jing LIANG Jing ZHANG Hao FENG Zhi-chun 2010Chinese Medical Journal2010,,19:79
3China land soil moisture EnKF data assimilation based on satellite remote sensing data显示文摘Soil moisture plays an important role in land-atmosphere interactions. It is an important geophysical parameter in research on climate, hydrology, agriculture, and forestry. Soil moisture has important climatic effects by influencing ground evapotranspi ration, runoff, surface reflectivity, surface emissivity, surface sensible heat and latent heat flux. At the global scale, the extent of its influence on the atmosphere is second only to that of sea surface temperature. At the terrestrial scale, its influence is even greater than that of sea surface temperatures. This paper presents a China Land Soil Moisture Data Assimilation System (CLSMDAS) based on EnKF and land process models, and results of the application of this system in the China Land Soil Moisture Data Assimilation tests. CLSMDAS is comprised of the following components: 1) A land process mo del—Community Land Model Version 3.0 (CLM3.0)—developed by the US National Center for Atmospheric Research (NCAR); 2) Precipitation of atmospheric forcing data and surface-incident solar radiation data come from hourly outputs of the FY2 geostationary meteorological satellite; 3) EnKF (Ensemble Kalman Filter) land data assimilation method; and 4) Observa tion data including satellite-inverted soil moisture outputs of the AMSR-E satellite and soil moisture observation data. Results of soil moisture assimilation tests from June to September 2006 were analyzed with CLSMDAS. Both simulation and assimila tion results of the land model reflected reasonably the temporal-spatial distribution of soil moisture. The assimilated soil mois ture distribution matches very well with severe summer droughts in Chongqing and Sichuan Province in August 2006, the worst since the foundation of the People’s Republic of China in 1949. It also matches drought regions that occurred in eastern Hubei and southern Guangxi in September.SHI ChunXiang XIE ZhengHui QIAN Hui LIANG MiaoLing YANG XiaoChun 2011Science China Earth Sciences2011,54,9:62
4H7N9 virulent mutants detected in chickens in China pose an increased threat to humans显示文摘Jianzhong Shi Guohua Deng Huihui Kong Chunyang Gu Shujie Ma Xin Yin Xianying Zeng Pengfei Cui Yan Chen Huanliang Yang Xiaopeng Wan Xiurong Wang Liling Liu Pucheng Chen Yongping Jiang Jinxiong Liu Yuntao Guan Yasuo Suzuki Mei Li Zhiyuan Qu Lizheng Guan Jinkai Zang Wenli Gu Shuyu Han Yangming Song Yuzhen Hu Zeng Wang Linlin Gu Wenyu Yang Libin Liang Hongmei Bao Guobin Tian Yanbing Li Chuanling Qiao Li Jiang Chengjun Li Zhigao Bu Hualan Chen 2017Cell Research2017,27,12:70
5Concentration 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
6Distribution of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in surface water and sediments from Baiyangdian Lake in North China显示文摘Persistent organochlorine compounds,including hexachlorocyclohexanes (HCHs),dichlorodiphenyltrichloroethanes (DDTs) and polychlorinated biphenyls (PCBs) were analyzed in surface water and sediments from Baiyangdian Lake,North China.Total concentrations of HCHs,DDTs and PCBs in surface water were in the range of 3.13-10.60,4.05-20.59 and 19.46-131.62 ng/L,respectively,and total concentrations of HCHs,DDTs and PCBs in sediments were 1.75-5.70,0.91-6.48 and 5.96-29.61 ng/g dry weight,respectively.Among the groups of HCHs (sum of α-HCH,β-HCH,γ-HCH and δ-HCH) and DDTs (sum of DDT,DDD and DDE),the predominance of β-HCH,DDE and DDD in water and sediment samples was clearly observed.This observation suggested that β-HCH was resistant to biodegradation and the DDTs had been transformed to its metabolites,DDE and DDD.For PCBs,penta-,hexa-and hepta-chlorinated congeners were the most abundant compounds in the both phases.Furthermore,the partitioning of chlorinated compounds between sediment and water was investigated to understand their transport and fates in aquatic ecosystems.The results indicated that average logs of organic carbon-normalized sediment-water partition coefficients (logK'oc) for OCPs varied between 3.20 and 5.53,and for PCBs,logK'oc values ranged from 3.19 to 5.57.The observed logK'oc was lower than their equilibrium logKoc predicted from linear model,which may be attributed to the solubility enhancement effect of colloidal matter in water phase and the disequilibrium between sediment and water.Guohua Dai Xinhui Liu Gang Liang Xu Han Liu Shi Dengmiao Cheng Wenwen Gong 2011Journal of Environmental Sciences2011,23,10:44
7Mortality and Morbidity of Extremely Low Birth Weight Infants in the Mainland of China: A Multi-center Study显示文摘Hui-Jia Lin Li-Zhong Du Xiao-Lu Ma Li-Ping Shi Jia-Hua Pan Xiao-Mei Tong Qiu-Ping Li Jian-Guo Zhou Bing Yi Ling Liu Yun-Bing Chen Qiu-Fen Wei Hui-Qing Wu Mei Li Cui-Qing Li Xi-Rong Gao Shi-Wen Xia Wen-Bin Li Chao-Ying Ya Ling He Kun Liang Xiao-Yu Zhou Shu-Ping Han Qin Lyu Yin-Ping Qiu Wen Li Dong-Mei Chen Hong-Ru Lu Xiao-Hong Liu Hong Liu Zhen-Lang Lin Li Liu Jia-Jun Zhu Hong Xiong Shao-Jie Yue Si-Qi Zhuang 2015Chinese Medical Journal2015,,20:49
8Tapetum Degeneration Retardation is Critical for Aliphatic Metabolism and Gene Regulation during Rice Pollen Development显示文摘作为在 flowering 植物的一个复杂的墙系统,花粉外部墙主要包含脂肪族的 sporopollenin;然而,为综合的机制在花粉期间,开发仍然是不太好的这些油脂的先锋理解。这里,我们在米饭花粉开发期间在脂肪族的新陈代谢和它的规章的角色在米饭表示 tapetum TDR (Tapetum 退化延迟) 的功能上报导基因。电子显微镜学(TEM ) 和扫描电子显微镜学(SEM ) 分析的传播的观察建议那花粉墙形成显著地在 tdr 异种被改变。花药的脂肪族的作文的内容极大地在测试的 GCMS (煤气的 chromatographymass spectrometry ) 揭示的 tdr 异种被改变,特别地在丰满的酸,主要白酒,链烷和链烯积累的更少,和有到在 tdr 的 C35 的从 C29 的碳长度的第二等的白酒的反常增加。Microarray 数据表明通常认为地涉及类脂化合物运输和新陈代谢的一组基因显著地在 tdr 异种被改变,显示在花粉墙的形成的 TDR 的关键角色。另外,大量基因(236 在起来调整的 total154 并且 82 下面调整) 展出了之间的统计上重要的表现差别野类型并且 tdr。除了它在支持 tapetum PCD 的函数, TDR 可能在米饭花粉开发期间在几基本生物进程起关键规章的作用。Da-Sheng Zhang Wan-Qi Liang Zheng Yuan Na Li Jing Shi Jue Wang Yu-Min Liu Wen-Juan Yu Da-Bing Zhang 2008Molecular Plant2008,1,4:38
9Correction of a genetic disease by CRISPR-Cas9-mediated gene editing in mouse spermatogonial stem cells显示文摘Spermatogonial 干细胞(SSC ) 能在移植以后生产众多的男配偶子进接受者睾丸,介绍为基因治疗和修改基因的动物的连续生产的一条珍贵途径。然而, SSC 的成功的基因操作被限制了,部分由于复杂性和当前可得到的基因编辑技术的低效率。这里,我们证明有效基因修正能用 CRISPR-Cas9 系统被介绍进 SSC。我们使用了 CRISPR-Cas9 系统变异在 SCC 的 EGFP transgene 或内长的 Crygc 基因。变异的 SSC 在移植以后经历了精子发生进不肥沃的老鼠睾丸的生精的小管。圆 spermatids 被产生并且在进成熟卵母细胞的注射以后,支持了显示相应变异的显型的异质接合的后代的生产。而且,在 Crygc 的一个引起疾病的变化(在 SSC 先存在的 Crygc −/−) 能乐意地到加入的 CRISPR-Cas9-induced nonhomologous 结束(NHEJ ) 或指导相同的修理(HDR ) 被修理,导致没有是的离开目标修正的证据带改正的基因的 SSC 线由整个染色体的定序出现。用从这些线产生的圆 spermatids 的授精在 100% 的效率与改正的显型产生了后代。我们的结果表明有效基因由 CRISPR-Cas9 系统在老鼠 SSC 编辑,并且提供在 SSC 经由基因修正治好基因疾病的原则的证明。Yuxuan Wu Hai Zhou Xiaoying Fan Ying Zhang Man Zhang Yinghua Wang Zhenfei Xie Meizhu Bai Qi Yin Dan Liang Wei Tang Jiaoyang Liao Chikai Zhou Wujuan Liu Ping Zhu Hongshan Guo Hong Pan Chunlian Wu Huijuan Shi Ligang Wu Fuchou Tang Jinsong Li 2015Cell Research2015,25,1:37
10Modulatory effects of acupuncture on brain networks in mild cognitive impairment patients显示文摘Functional magnetic resonance imaging has been widely used to investigate the effects of acupuncture on neural activity. However, most functional magnetic resonance imaging studies have focused on acute changes in brain activation induced by acupuncture. Thus, the time course of the therapeutic effects of acupuncture remains unclear. In this study, 32 patients with amnestic mild cognitive impairment were randomly divided into two groups, where they received either Tiaoshen Yizhi acupuncture or sham acupoint acupuncture. The needles were either twirled at Tiaoshen Yizhi acupoints, including Sishencong(EX-HN1), Yintang(EX-HN3), Neiguan(PC6), Taixi(KI3), Fenglong(ST40), and Taichong(LR3), or at related sham acupoints at a depth of approximately 15 mm, an angle of ± 60°, and a rate of approximately 120 times per minute. Acupuncture was conducted for 4 consecutive weeks, five times per week, on weekdays. Resting-state functional magnetic resonance imaging indicated that connections between cognition-related regions such as the insula, dorsolateral prefrontal cortex, hippocampus, thalamus, inferior parietal lobule, and anterior cingulate cortex increased after acupuncture at Tiaoshen Yizhi acupoints. The insula, dorsolateral prefrontal cortex, and hippocampus acted as central brain hubs. Patients in the Tiaoshen Yizhi group exhibited improved cognitive performance after acupuncture. In the sham acupoint acupuncture group, connections between brain regions were dispersed, and we found no differences in cognitive function following the treatment. These results indicate that acupuncture at Tiaoshen Yizhi acupoints can regulate brain networks by increasing connectivity between cognition-related regions, thereby improving cognitive function in patients with mild cognitive impairment.Ting-ting Tan Dan Wang Ju-ke Huang Xiao-mei Zhou Xu Yuan Jiu-ping Liang Liang Yin Hong-liang Xie Xin-yan Jia Jiao Shi Fang Wang Hao-bo Yang Shang-jie Chen 2017Neural Regeneration Research2017,12,2:32
11Hydroxysafflor yellow A improves learning and memory in a rat model of vascular dementia by increasing VEGF and NR1 in the hippocampus显示文摘Hydroxysafflor yellow A(HSYA) has angiogenesisregulating and neuro-protective effects, but its effects on vascular dementia(VaD) are unknown. In this study, 30 adult Sprague-Dawley rats were randomly allocated to five groups: normal, sham-operation, VaD alone(bilateral carotid artery occlusion), VaD plus saline(control), and VaD plus HSYA. One week after operation, the HSYA group received one daily tail-vein injection of 0.6 mg/100 g HSYA for two weeks. Five weeks after operation, the spatial memory of all five groups was evaluated by the water maze task, and synaptic plasticity in the hippocampus was assessed by the long-term potentiation(LTP) method. Vascular endothelial growth factor(VEGF) and N-methyl-Daspartic acid receptor 1(NR1) expression in the hippocampus was detected via Western blot. We found that, compared with the group with VaD alone, the group with HSYA had a reduced escape latency in the water maze(P <0.05), and the LTP at CA3-CA1 synapses in the hippocampus was enhanced(P <0.05). Western blot in the late-phase VaD group showed slight up-regulation of VEGF and downregulation of NR1 in the hippocampus, while HSYA significantly up-regulated both VEGF and NR1. Theseresults suggested that HSYA promotes angiogenesis and increases synaptic plasticity, thus improving spatial learning and memory in the rat model of VaD.Nan Zhang Mengya Xing Yiyi Wang Hao Liang Zhuo Yang Fudong Shi Yan Cheng 2014Neuroscience Bulletin2014,30,3:30
12Expression of soluble triggering receptor expression on myeloid cells-1 in pleural effusion显示文摘HUANG Lu-ying SHI Huan-zhong LIANG Qiu-li WU Yan-bin QIN Xue-jun CHEN Yi-qiang 2008Chinese Medical Journal2008,,17:28
13Suppression of Jasmonic Acid-Mediated Defense by Viral-Inducible MicroRNA319 Facilitates Virus Infection in Rice显示文摘MicroRNAs (miRNAs ) 是植物开发和主人病毒相互作用的枢轴的调节的人。然而,角色和涉及病毒的感染和主人危险性的特定的 miRNAs 的行动模式仍然保持大部分不清楚。在这研究,我们给那瑞斯看引起 miR319 的增加的累积,但是减少的破旧绝技病毒(RRSV ) 感染调整 miR319 的 TCP (TEOSINTE BRANCHED/CYCLOIDEA/PCF ) 的表示基因,特别 TCP21,在米饭植物。转基因的米饭植物 overexpressing miR319 或 downregulating TCP21 展出了像疾病的显型并且与野类型的植物比较显示出显著地更高的危险性到 RRSV。相反,仅仅温和的疾病症状在感染 RRSV 的线 overexpressing TCP21 并且特别在转基因的植物 overexpressing 被观察 miR319 抵抗的 TCP21。miR319 的 RRSV 感染和 overexpression 在米饭与 JA 生合成和信号相关的基因的 downregulated 表示一起引起了减少的内长的 jasmonic 酸(JA ) 层次。然而,有甲基 jasmonate 的米饭植物的治疗减轻了 RRSV 引起并且减少了病毒累积的疾病症状。一起拿,我们的结果建议由在米饭的 RRSV 感染的 miR319 的正式就职压制调停 JA 的防卫便于病毒感染和症状开发。Chao Zhang Zuomei Ding Kangcheng Wu Liang Yang Yang Li Zhen Yang Shan Shi Xiaojuan Liu Shanshan Zhao Zhirui Yang Yu Wang Luping Zheng Juan Wei Zhenguo Du Aihong Zhang Hongqin Miao Yi Li Zujian Wu Jianguo Wu 2016Molecular Plant2016,9,9:27
14An ant colony optimization method for generalized TSP problem显示文摘也就是,集中于欧几里德几何学的旅行售货员问题(TSP ) 的一个变化概括旅行售货员问题(GTSP ) ,这篇论文从 TSP 扩大蚂蚁殖民地优化方法到这块地。由考虑组影响,一个改进方法进一步被改进。为了避免锁住进本地最小,一个变化过程和一个本地人,寻找的技术也被介绍进这个方法。数字结果证明建议方法能相当处理 GTSP 问题很好,并且发达变化过程和本地人寻找技术是有效的。Jinhui Yang Xiaohu Shi Maurizio Marchese Yanchun Liang 2008Progress in Natural Science:Materials International2008,18,11:24
15Effect of Lingguizhugan decoction on myocardial Nuclear factor kappa B protein expression in rats with chronic heart failure显示文摘OBJECTIVE: To investigate the effect of Lingguizhugan decoction (LGZGD) on changes of cardiac structure and function, and its putative mechanism of action, by investigating mRNA and protein expression of myocardial nuclear factor kappa B(NF-κB), and the plasma content of NF-κB in rats with chronic heart failure.METHODS: The chronic heart failure (CHF) model in rats was induced by coronary artery ligation.Sham operation was performed in control rats. Six weeks after the procedure, rats were randomly classified into the various treatment groups: model CHF, Captopril (4.4 mg/kg), low LGZGD dose (2.1 g/kg), medium LGZGD dose (4.2 g/kg), and high LG-ZGD dose (8.4 g/kg). Treatments continued for 4 consecutive weeks. Changes of hemodynamic indices were observed by the PowerLab data acquisition and analysis system. Morphological changes of myocardium were observed by hematoxylin and eosin staining, and Masson staining. The mRNA and protein expression of myocardial NF-κB were detected by reverse transcription-polymerase chain reaction and western blotting, respectively. The plasma content of NF-κB was detected by enzyme-linked immuno-sorbent assay.RESULTS: CHF rats showed significant dysfunction in hemodynamic indices and in cardiac structure.Compared with the sham operation group, mRNA expression of myocardial NF-κB and plasma content of NF-κB of the model group was significantly increased. All three doses of LGZGD, and Captopril,improved the hemodynamic dysfunction, and inhibited the change of cardiac structure while significantly improving the survival rate. Furthermore,compared with the model group, mRNA expression of myocardial NF-κB and plasma content of NF-κB were significantly reduced by all dosage groups of LGZGD as well as the\Captopril group.CONCLUSION: In CHF rats, LGZGD improves changes of cardiac structure and function via its inhibition of NF-κB.Jinling Huang Liang Wang Hui Shi Xiaoyan Hou 2013Journal of Traditional Chinese Medicine2013,33,3:24
16Incidence and mortality of esophagus cancer in China, 2008-2012显示文摘Objective: To analyze the incidence and mortality rates of esophagus cancer in China from 2008 to 2012.Methods: Incident and mortality cases of esophagus cancer were retrieved from the National Central Cancer Registry(NCCR) database collecting from 135 cancer registries in China during 2008-2012. The incidence and mortality rates of esophagus cancer were calculated by area(urban/rural), region(eastern, middle, western), gender and age group(0, 1-4, 5-84 by 5 years and 85+ years). China census in 2000 and Segi’s world population were applied for age-standardized rates. Joinpoint model was used for time-trend analysis.Results: The crude incidence rate of esophagus cancer was 22.57/100,000. The age-standardized incidence rates by China standard population(ASIRC) and by world standard population(ASIRW) were 14.58/100,000 and14.80/100,000, respectively. The crude mortality rate of esophagus cancer was 17.19/100,000. The agestandardized mortality rates by Chinese standard population(ASMRC) and by world standard population(ASMRW) were 10.80/100,000 and 10.86/100,000 respectively. Incidence and mortality rates of esophagus cancer were higher in males than in females and higher in rural areas than in urban areas. The crude incidence rate in middle areas was the highest among all areas, followed by western areas and eastern areas. The age-specific incidence rate of esophagus cancer was relatively low in age groups before 40 years old and then increased after 45 years old. It peaked in the age group of 80-84 years. The patterns of age-specific mortality rates of esophagus cancer were close to those of age-specific incidence rates. The ASIRC of esophagus cancer decreased dramatically by 29.87% between 2003 and 2012, from 14.33/100,000 to 10.05/100,000. The esophagus cancer incidence rate decreased by 3.76% per year(P>0.05). The mortality rate of esophagus cancer decreased annually over the decades from 2003 to 2012 in China(P>0.05). In females, the annual percentage change(APC) of mortality rate was-5.43%[95% confidence intervals(95% CI):-6.50%,-4.30%](P<0.05) and the mortality rate of esophagus cancer in rural females was statistically significant(APC:-3.20%, 95% CI:-4.20%,-2.20%)(P<0.05).Conclusions: The focus of prevention and treatment for esophagus cancer is strengthening primary prevention of esophageal cancer, and promoting esophagus cancer secondary prevention to reduce incidence and mortality rates of esophagus cancer, prolong survival rate of patients and decline the burden of esophagus cancer in China.Yutong He Daojuan Li Baoen Shan Di Liang Jin Shi Wanqing Chen Jie He 2019Chinese Journal of Cancer Research2019,31,3:24
17Collagen scaffolds modified with collagen-binding bFGF promotes the neural regeneration in a rat hemisected spinal cord injury model显示文摘Nerve conduit is one of strategies for spine cord injury(SCI)treatment.Recently,studies showed that biomaterials could guide the neurite growth and promote axon regeneration at the injury site.However,the scaffold by itself was difficult to meet the need of SCI functional recovery.The basic fibroblast growth factor(bFGF)administration significantly promotes functional recovery after organ injuries.Here,using a rat model of T9 hemisected SCI,we aimed at assessing the repair capacity of implantation of collagen scaffold(CS)modified by collagen binding bFGF(CBD-bFGF).The results showed that CS combined with CBD-bFGF treatment improved survival rates after the lateral hemisection SCI.The CS/CBD-bFGF group showed more significant improvements in motor than the simply CS-implanted and untreated control group,when evaluated by the 21-point Basso-Beattie-Bresnahan(BBB)score and footprint analysis.Both hematoxylin and eosin(H&E)and immunohistochemical staining of neurofilament(NF)and glial fibrillary acidic protein(GFAP)demonstrated that fibers were guided to grow through the implants.These findings indicated that administration of CS modified with CBD-bFGF could promote spinal cord regeneration and functional recovery.SHI Qin GAO Wei HAN XingLong ZHU XueSong SUN Jie XIE Fang HOU XiangLin YANG HuiLin DAI JianWu CHEN Liang 2014Science China(Life Sciences)2014,57,2:23
18The second natural gas hydrate production test in the South China Sea显示文摘Clayey silt reservoirs bearing natural gas hydrates(NGH)are considered to be the hydrate-bearing reservoirs that boast the highest reserves but tend to be the most difficult to exploit.They are proved to be exploitable by the first NGH production test conducted in the South China Sea in 2017.Based on the understanding of the first production test,the China Geological Survey determined the optimal target NGH reservoirs for production test and conducted a detailed assessment,numerical and experimental simulation,and onshore testing of the reservoirs.After that,it conducted the second offshore NGH production test in 1225 m deep Shenhu Area,South China Sea(also referred to as the second production test)from October 2019 to April 2020.During the second production test,a series of technical challenges of drilling horizontal wells in shallow soft strata in deep sea were met,including wellhead stability,directional drilling of a horizontal well,reservoir stimulation and sand control,and accurate depressurization.As a result,30 days of continuous gas production was achieved,with a cumulative gas production of 86.14×104 m3.Thus,the average daily gas production is 2.87×10^4 m^3,which is 5.57 times as much as that obtained in the first production test.Therefore,both the cumulative gas production and the daily gas production were highly improved compared to the first production test.As indicated by the monitoring results of the second production test,there was no anomaly in methane content in the seafloor,seawater,and atmosphere throughout the whole production test.This successful production test further indicates that safe and effective NGH exploitation is feasible in clayey silt NGH reservoirs.The industrialization of hydrates consists of five stages in general,namely theoretical research and simulation experiments,exploratory production test,experimental production test,productive production test,and commercial production.The second production test serves as an important step from the exploratory production test to experimental production test.Jian-liang Ye Xu-wen Qin Wen-wei Xie Hai-long Lu Bao-jin Ma Hai-jun Qiu Jin-qiang Liang Jing-an Lu Zeng-gui Kuang Cheng Lu Qian-yong Liang Shi-peng Wei Yan-jiang Yu Chunsheng Liu Bin Li Kai-xiang Shen Hao-xian Shi Qiu-ping Lu Jing Li Bei-bei Kou Gang Song Bo Li He-en Zhang Hong-feng Lu Chao Ma Yi-fei Dong Hang Bian 2020China Geology2020,3,2:22
19Rice CYP703A3, a cytochrome P450 hydroxylase, is essential for development of anther cuticle and pollen exine显示文摘Anther cuticle and pollen exine act as protective envelopes for the male gametophyte or pollen grain, but the mechanism underlying the synthesis of these lipidic polymers remains unclear. Previously, a tapetum‐expressed CYP703A3, a putative cytochrome P450 fatty acid hydroxylase, was shown to be essential for male fertility in rice(Oryza sativa L.). However,the biochemical and biological roles of CYP703A3 has not been characterized. Here, we observed that cyp703a3‐2 caused by one base insertion in CYP703A3 displays defective pollen exine and anther epicuticular layer, which differs from Arabidopsis cyp703a2 in which only defective pollen exine occurs. Consistently, chemical composition assay showed that levels of cutin monomers and wax components were dramatically reduced in cyp703a3‐2 anthers. Unlike the wide range of substrates of Arabidopsis CYP703A2, CYP703A3 functions as an in‐chain hydroxylase only for a specific substrate, lauric acid, preferably generating 7‐hydroxylated lauric acid. Moreover, chromatin immunoprecipitation and expression analyses revealed that the expression of CYP703A3 is directly regulated by Tapetum Degeneration Retardation, a known regulator of tapetum PCD and pollen exine formation. Collectively, our results suggest that CYP703A3 represents a conserved and diversified biochemical pathway for in‐chain hydroxylation of lauric acid required for the development of male organ in higher plants.Xijia Yang Di Wu Jianxin Shi Yi He Franck Pinot Bernard Grausem Changsong Yin Lu Zhu Mingjiao Chen Zhijing Luo Wanqi Liang Dabing Zhang 2014Journal of Integrative Plant Biology2014,56,10:21
20Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China.Kaiwen Li Tianxin Lin Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang 2015Asian Journal of Urology2015,2,2:21
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