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| 1 | Two-stage vs single-stage management for concomitant gallstones and common bile duct stones显示文摘AIM:To evaluate the safety and effectiveness of twostage vs single-stage management for concomitant gallstones and common bile duct stones.METHODS:Four databases,including PubMed,Embase,the Cochrane Central Register of Controlled Trials and the Science Citation Index up to September 2011,were searched to identify all randomized controlled trials(RCTs).Data were extracted from the studies by two independent reviewers.The primary outcomes were stone clearance from the common bile duct,postoperative morbidity and mortality.The secondary outcomes were conversion to other procedures,number of procedures per patient,length of hospital stay,total operative time,hospitalization charges,patient acceptance and quality of life scores.RESULTS:Seven eligible RCTs [five trials(n = 621) comparing preoperative endoscopic retrograde cholangiopancreatography(ERCP)/endoscopic sphincterotomy(EST) + laparoscopic cholecystectomy(LC) with LC + laparoscopic common bile duct exploration(LCBDE);two trials(n = 166) comparing postoperative ERCP/EST + LC with LC + LCBDE],composed of 787 patients in total,were included in the final analysis.The metaanalysis detected no statistically significant difference between the two groups in stone clearance from the common bile duct [risk ratios(RR) =-0.10,95% confidence intervals(CI):-0.24 to 0.04,P = 0.17],postoperative morbidity(RR = 0.79,95% CI:0.58 to 1.10,P = 0.16),mortality(RR = 2.19,95% CI:0.33 to 14.67,P = 0.42),conversion to other procedures(RR = 1.21,95% CI:0.54 to 2.70,P = 0.39),length of hospital stay(MD = 0.99,95% CI:-1.59 to 3.57,P = 0.45),total operative time(MD = 12.14,95% CI:-1.83 to 26.10,P = 0.09).Two-stage(LC + ERCP/EST) management clearly required more procedures per patient than single-stage(LC + LCBDE) management.CONCLUSION:Single-stage management is equivalent to two-stage management but requires fewer procedures.However,patient's condition,operator's expertise and local resources should be taken into account in making treatment decisions. | Jiong Lu Yao Cheng Xian-Ze Xiong Yi-Xin Lin Si-Jia Wu Nan-Sheng Cheng | 2012 | World Journal of Gastroenterology2012,18,24: | 107 |
| 2 | Effect of Simulated Acid Rain on Potential Carbon and Nitrogen Mineralization in Forest Soils显示文摘Acid rain is a serious environmental problem worldwide. In this study, a pot experiment using forest soils planted with the seedlings of four woody species was performed with weekly treatments of pH 4.40, 4.00, 3.52, and 3.05 simulated acid rain (SAR) for 42 months compared to a control of pH 5.00 lake water. The cumulative amounts of C and N mineralization in the five treated soils were determined after incubation at 25 ℃ for 65 d to examine the effects of SAR treatments. For all five treatments, cumulative CO2-C production ranged from 20.24 to 27.81 mg kg-1 dry soil, net production of available N from 17.37 to 48.95 mg kg-1 dry soil, and net production of NO-3 -N from 9.09 to 46.23 mg kg-1 dry soil. SAR treatments generally enhanced the emission of CO2-C from the soils; however, SAR with pH 3.05 inhibited the emission. SAR treatments decreased the net production of available N and NO3-N. The cumulative CH4 and N2O productions from the soils increased with increasing amount of simulated acid rain. The cumulative CO2-C production and the net production of available N of the soil under Acmena acuminatissima were significantly higher (P ≤ 0.05) than those under Schima superba and Cryptocarya concinna. The mineralization of soil organic C was related to the contents of soil organic C and N, but was not related to soil pH. However, the overall effect of acid rain on the storage of soil organic matter and the cycling of important nutrients depended on the amount of acid deposition and the types of forests. | OUYANG Xue-Jun ZHOU Guo-Yi HUANG Zhong-Liang LIU Ju-Xiu ZHANG De-Qiang LI Jiong | 2008 | Pedosphere2008,18,4: | 40 |
| 3 | Upregulation of PTEN involved in rosiglitazone-induced apoptosis in human hepatocellular carcinoma cells显示文摘瞄准:调查 rosiglitazone 的效果, peroxisomeproliferator-ac-tivated 受体 gamma ( PPARy )收缩筋在在 hepatocellular carcinomacells 在染色体 10 基因( PTEN )和房间生长上删除的磷酸酶 andtensin 相当或相同事物的表示上,象这些 effects.Methods 的内在的机制一样: RT-PCR 和西方的 blottinganalyses 被执行在 Hep3B 房间 treatedwith rosiglitazone.3-( 4,5-Dimethylthiazol-2-yl )检测抄写和 PTEN 的表示 -2,5-diphenyl | Liang-qi CAO Xi-lin CHEN Qian WANG Xiao-hui HUANG Mao-chuan ZHEN Long-juan ZHANG Wen LI Jiong BI | 2007 | Acta Pharmacologica Sinica2007,28,6: | 32 |
| 4 | IL-23 signaling enhances Th2 polarization and regulates allergic airway inflammation显示文摘 | Juan Peng Xuexian O Yang Seon Hee Chang Jiong Yang Chen Dong | 2010 | Cell Research2010,20,1: | 31 |
| 5 | Structure and function of aggrecan显示文摘Aggrecan is the major proteoglycan in the articular cartilage. This molecule is important in the proper functioning of articular cartilage because it provides a hydrated gel structure (via its interaction with hyaluronan and link protein) that endows the cartilage with load-bearing properties. It is also crucial in chondroskeletal morphogenesis during development. Aggrecan is a multimodular molecule expressed by chondrocytes. Its core protein is composed of three globular domains (G1, G2, and G3) and a large extended region (CS) between G2 and G3 for glycosaminoglycan chain attachment. G1 comprises the amino terminus of the core protein. This domain has the same structural motif as link protein. Functionally, the G1 domain interacts with hyaluronan acid and link protein, forming stable ternary complexes in the extracellular matrix. G2 is homologous to the tandem repeats of G1 and of link protein and is involved in product processing. G3 makes up the carboxyl terminus of the core protein. It enhances glycosaminoglycan modification and product secretion. Aggrecan plays an important role in mediating chondrocyte-chondrocyte and chondrocyte-matrix interactions through its ability to bind hyaluronan. | CHRIS KIANI, LIWEN CHEN, YAO JIONG WU, ALBERT J YEE, BURTON B YANG, Sunnybrook and Women’s College Health Sciences Centre and Department of Laboratory Medicine and Patobiology, 2 Department of Surgeny, Faculty of Medicine, University of Toronto, Canada | 2002 | Cell Research2002,12,1: | 27 |
| 6 | Spatial Characteristics of Extreme Rainfall over China with Hourly through 24-Hour Accumulation Periods Based on National-Level Hourly Rain Gauge Data显示文摘Hourly rainfall measurements of 1919 national-level meteorological stations from 1981 through 2012 are used to document,for the first time,the climatology of extreme rainfall in hourly through 24-h accumulation periods in China. Rainfall amounts for 3-,6-,12- and 24-h periods at each station are constructed through running accumulation from hourly rainfall data that have been screened by proper quality control procedures. For each station and for each accumulation period,the historical maximum is found,and the corresponding 50-year return values are estimated using generalized extreme value theory. Based on the percentiles of the two types of extreme rainfall values among all the stations,standard thresholds separating Grade I,Grade II and Grade III extreme rainfall are established,which roughly correspond to the 70th and 90th percentiles for each of the accumulation periods. The spatial characteristics of the two types of extreme rainfall are then examined for different accumulation periods. The spatial distributions of extreme rainfall in hourly through 6-h periods are more similar than those of 12- and 24-h periods. Grade III rainfall is mostly found over South China,the western Sichuan Basin,along the southern and eastern coastlines,and in the large river basins and plains. There are similar numbers of stations with Grade III extreme hourly rainfall north and south of 30°N,but the percentage increases to about 70% south of 30°N as the accumulation period increases to 24 hours,reflecting richer moisture and more prolonged rain events in southern China. Potential applications of the extreme rainfall climatology and classification standards are suggested at the end. | Yongguang ZHENG Ming XUE Bo LI Jiong CHEN Zuyu TAO | 2016 | Advances in Atmospheric Sciences2016,33,11: | 28 |
| 7 | ABF2, ABF3, and ABF4 Promote ABA-Mediated Chlorophyll Degradation and Leaf Senescence by Transcriptional Activation of Chlorophyll Catabolic Genes and Senescence-Associated Genes in Arabidopsis显示文摘叶绿素(Chl ) 降级是叶老朽的一个不可分的过程,并且 NYE1/SGR1 在多样的工厂种类作为 Chl 分解代谢的一个关键管理者被表明了。在这研究,用屏蔽的酵母一个混血儿,我们识别了三 abscisic 酸(骆驼毛的织物) 应答的元素(ABRE ) 绑定抄写因素, ABF2 (AREB1 ) , ABF3,和 ABF4 (AREB2 ) , NYE1 倡导者的通常认为的有约束力的蛋白质。通过 transactivation 分析, electrophoretic 活动性移动试金,和染色质 immunoprecipitation,我们表明了直接跳到并且在 vitro 并且在 vivo 激活 NYE1 倡导者的那 ABF2, ABF3,和 ABF4。骆驼毛的织物是叶老朽的一个积极管理者,并且外长地适用骆驼毛的织物能加速 Chl 降级。ABF, abf2abf3abf4,以及二骆驼毛的织物感觉迟钝的异种, abi1-1 和 snrk2.2/2.3/2.6 的三倍的异种,在骆驼毛的织物处理以后的展出停留绿色显型,与 NYE1 和 NYE2 表示的减少的正式就职一起。相反, ABF4 的 overexpression 在骆驼毛的织物处理之上加速了 Chl 降级。有趣地, ABF2/3/4 能也激活二 Chl 分解代谢的酶基因, PAO 和 NYC1 的表达式,由对他们的倡导者直接有约束力。另外, abf2abf3abf4 展出了功能的停留绿色显型,和联系老朽的基因(下垂) 例如 SAG29 (SWEET15 ) ,可能被 ABF 直接调整。一起拿,我们的结果在调停作为关键管理者建议那 ABF2, ABF3,和 ABF4 可能的行为被触发骆驼毛的织物的 Chl 降级和叶老朽一般来说在 Arabidopsis。 | Shan Gao Jiong Gao Xiaoyu Zhu Yi Song Zhongpeng Li Guodong Ren Xin Zhou Benke Kuai | 2016 | Molecular Plant2016,9,9: | 27 |
| 8 | Insulation Performance of CF3I-N2 Gas Mixtures as Alternative for SF6 in GIS/C-GIS显示文摘CF3I has been widely considered as a potential alternative for SF6,because it has low global warming potential(GWP)but an insulation capability that is 1.2 times greater than that of SF6.In this paper,the electron swarm parameters of CF3I and its gas mixture with N2,including the effective ionization coefficient and electron drift velocity,are examined theoretically through the Boltzmann equation method in the condition of steady-state Townsend(SST)experiments.Based on the derived data of the limiting field strength of CF3I-N2gas mixture,taking into consideration of environmental aspects such as GWP,ozone depletion potential(ODP),liquefaction temperature and toxicity,we studied the possibility of applying the gas mixture as the insulation medium in gas-insulated switchgears(GIS)or cubic type gas-insulated switchgears(C-GIS).It is found that CF3I-N2gas mixtures contained 30%~70%CF3I perform comprehensively better than pure SF6and compressed N2,and especially in medium and low voltage environments,the boiling point of CF3I-N2gas mixture meets the domestic and global requirements in mid-low latitude regions.Therefore we conclude that the gas mixture is acceptable for replacing SF6as the insulation medium in C-GISs. | DENG Yunkun XIAO Dengming CHEN Jiong | 2013 | 高电压技术2013,39,9: | 25 |
| 9 | Climatological distribution and diurnal variation of mesoscale convective systems over China and its vicinity during summer显示文摘The climatological distribution of mesoscale convective systems (MCSs) over China and its vicinity during summer is statistically analyzed, based on the 10-year (1996―2006, 2004 excluded) June-August infrared TBB (Temperature of black body) dataset. Comparing the results obtained in this paper with the distribution of thunderstorms from surface meteorological stations over China and the distribution of lightning from low-orbit satellites over China and its vicinity in the previous studies, we find that the statistic characteristics of TBB less than -52℃ can better represent the spatiotemporal distribution of MCSs over China and its vicinity during summer.The spreading pattern of the MCSs over this region shows three transmeridional bands of active MCSs, with obvious fluctuation of active MCSs in the band near 30°N. It can be explained by the atmospheric circulation that the three bands of active MCSs are associated with each other by the summer monsoon over East Asia. We focus on the diurnal variations of MCSs over different underlying surfaces, and the result shows that there are two types of MCSs over China and its vicinity during summer. One type of MCSs has only one active period all day long (single-peak MCSs), and the other has multiple active periods (multi-peak MCSs). Single-peak MCSs occur more often over plateaus or mountains, and multi-peak MCSs are more common over plains or basins. Depending on lifetimes and active periods, single-peak MCSs can be classified as Tibetan Plateau MCSs, general mountain MCSs, Ryukyu MCSs, and so on. The diurnal variation of multi-peak MCSs is very similar to that of MCCs (mesoscale convective complexes), and it reveals that multi-peak MCSs has longer life cycle and larger horizontal scale, becomes weaker after sunset, and develops again after midnight. Tibetan Plateau MCSs and general mountain MCSs both usually develop in the afternoon, but Tibetan Plateau MCSs have longer life cycle and more active MαCSs. Ryukyu MCSs generally develop after midnight, last longer time, and also have more active MαCS. The abundant moisture and favorable large-scale environment over Indian monsoon surge areas lead to active MCSs and MαCSs almost at any hour all day during summer. Due to local mountain-valley breeze circulation over the Sichuan Basin, MCSs are developed remarkably more often during the nighttime, and again there are also more active MαCSs. Because of local prominent sea-land breeze circulation over Guangxi and Guangdong, the MCSs over this region propagate from sea to land in the afternoon and from land to sea after midnight. The statistic characteristics of TBB less than -52℃ clearly display the different climatological characteristics of MCSs owing to the thermal difference among water, land and rough terrain. Not only the large-scale atmospheric circulation but also the local atmospheric circulation caused by the thermal difference among water, land and rough terrain, to a great extent, determines the climatological distribution of MCSs over China and its vicinity during summer. | ZHENG YongGuang CHEN Jiong ZHU PeiJun | 2008 | Chinese Science Bulletin2008,53,10: | 24 |
| 10 | On the tuning of electrical and thermal transport in thermoelectrics: an integrated theory–experiment perspective显示文摘During the last two decades,we have witnessed great progress in research on thermoelectrics.There are two primary focuses.One is the fundamental understanding of electrical and thermal transport,enabled by the interplay of theory and experiment;the other is the substantial enhancement of the performance of various thermoelectric materials,through synergistic optimisation of those intercorrelated transport parameters.Here we review some of the successful strategies for tuning electrical and thermal transport.For electrical transport,we start from the classical but still very active strategy of tuning band degeneracy(or band convergence),then discuss the engineering of carrier scattering,and finally address the concept of conduction channels and conductive networks that emerge in complex thermoelectric materials.For thermal transport,we summarise the approaches for studying thermal transport based on phonon–phonon interactions valid for conventional solids,as well as some quantitative efforts for nanostructures.We also discuss the thermal transport in complex materials with chemical-bond hierarchy,in which a portion of the atoms(or subunits)are weakly bonded to the rest of the structure,leading to an intrinsic manifestation of part-crystalline part-liquid state at elevated temperatures.In this review,we provide a summary of achievements made in recent studies of thermoelectric transport properties,and demonstrate how they have led to improvements in thermoelectric performance by the integration of modern theory and experiment,and point out some challenges and possible directions. | Jiong Yang Lili Xi Wujie Qiu Lihua Wu Xun Shi Lidong Chen Jihui Yang Wenqing Zhang Ctirad Uher David J Singh | 2016 | npj Computational Materials2016,,1: | 24 |
| 11 | Changing patterns and survival improvements of young breast cancer in China and SEER database, 1999-2017显示文摘Objective: Breast cancer in young females was usually considered more aggressive and requires aggressive therapy. We investigated whether early detection and improved treatments changed the patterns of characteristics,management and outcomes of young breast cancer patients over time.Methods: Females under 40 years of age diagnosed with breast cancer during the periods 1999-2017 and1999-2015 were identified in the Fudan University Shanghai Cancer Center(FUSCC) and the population-based Surveillance, Epidemiology, and End Results(SEER) registry, respectively. Clinicopathologic characteristics and treatment information were collected. Patients diagnosed before 2013 were followed up.Results: The proportions of young breast cancer patients were 15.0% and 5.3% in the FUSCC and SEER cohorts, respectively. In the FUSCC cohort, there was a significant increase in the proportion of ductal carcinoma in situ(DCIS)(from 8.8% to 16.9%;P<0.0001) and it remained stable in SEER cohort. The proportion of T1-stage tumors increased dramatically in the FUSCC cohort(from 35.3% to 41.9%;P=0.008), whereas it decreased in SEER cohort(from 42.4% to 33.0%;P<0.0001). The percentage of estrogen receptor(ER)-positive cancers was consistently increased in both the invasive ductal carcinoma(IDC) and DCIS patients in the two cohorts. Breastconserving surgery and immediate implant reconstruction after mastectomy both exhibited increased use over time in the FUSCC cohort. Both the FUSCC and SEER cohorts showed a significantly better prognosis in the recent time period.Conclusions: With the increased early-stage and ER-positive diseases in young patients as well as better systemic treatment strategies, improved survival has been observed in recent years. There has been a substantial deescalation in surgical therapies in young breast cancer patients. | Rong Guo Jing Si Jingyan Xue Yonghui Su Miao Mo Benlong Yang Qi Zhang Weiru Chi Yayun Chi Jiong Wu | 2019 | Chinese Journal of Cancer Research2019,31,4: | 24 |
| 12 | Cationic nanocarriers induce cell necrosis through impairment of Na^+/K^+-ATPase and cause subsequent inflammatory response显示文摘有积极表面费用的 Nanocarriers 以他们限制了他们的临床的应用的毒性著名。位于他们的毒性下面的机制例如煽动性的反应的正式就职,仍然保持大部分未知。在我们发现了 cationic nanocarriers 的那注射的现在的学习,包括 cationic liposomes, PEI,和 chitosan,导致了坏死的房间的快速的外观。cationic nanocarriers 导致的房间坏死依赖于他们的积极表面费用,但是不要求 RIP1 和 Mlkl。相反,细胞内部的 Na + 超载被发现伴随房间死亡。在文化媒介或有 Na +/K+-ATPase 阳离子绑定地点禁止者 ouabain 的房间的预告的处理的 Na + 的弄空,从房间坏死的保护的房间。而且,有 cationic nanocarriers 的处理在 vitro 并且在 vivo 禁止了 Na +/K+-ATPase 活动。计算模拟证明 cationic 搬运人能与 Na +/K+-ATPase 的阳离子绑定地点交往。有 ouabain 的小剂量的老鼠 pretreated 在 cationic nanocarriers 的致命的剂量的注射以后显示出改进幸存。进一步的分析建议 cationic nanocarriers 和 mitochondrial DNA 的产生的漏导致的那房间坏死能在 vivo 触发严重发炎,它被包含 TLR9 并且 MyD88 发信号的一条小径调停。一起拿,我们的结果揭示由此的新奇机制 cationic nanocarriers 通过和 mitochondrial 的随后的暴露的和 Na +/K+-ATPase, 的相互作用导致尖锐房间坏死是的联系损坏的分子的模式调停的一个关键事件煽动性的回答。我们的学习为评估 nanocarriers 的 biocompatibility 并且为药交货设计更好、更安全的有重要含意。 | Xiawei Wei Bin Shao Zhiyao He Tinghong Ye Min Luo Yaxiong Sang Xiao Liang Wei Wang Shuntao Luo Shengyong Yang Shuang Zhang Changyang Gong Maling Gou Hongxing Deng Yinglan Zhao Hanshuo Yang Senyi Deng Chengjian Zhao Li Yang Zhiyong Qian Jiong Li Xun Sun Jiahuai Han Chengyu Jiang Min Wu Zhirong Zhang | 2015 | Cell Research2015,25,2: | 21 |
| 13 | Floor heave in the west wing track haulage roadway of the Tingnan Coal Mine: Mechanism and control显示文摘Floor heave of a roadway is a dynamic phenomenon that often happens in the roadways of coal mines. It seriously affects safe production in the coal mine. Floor heave has long been one of the most difficult problems to be resolved during coal mining. An analysis of floor heave in the soft rock surrounding the roadway, and the factors influencing it, allowed the deformation mechanism in the west wing double track haulage roadway of the Tingnan Coal Mine to be deduced. Three types of floor heave are observed there: intumescent floor heave, extrusion and mobility floor heave, and compound floor heave. Control measures are proposed that have been adopted during a recent repair engineering project. Control of the floor heave in the west wing track haulage roadway was demonstrated. The reliability and rationality of a combined support technology including floor anchors, an inverted arch, and anchoring of both sides was verified by mine pressure data and the field observations. Waterproofing measures were also under-taken to assist in the control of floor heave. | Wang Jiong | 2012 | International Journal of Mining Science and Technology2012,22,3: | 18 |
| 14 | Prenatal diagnosis of methylmalonic aciduria by analysis of organic acids and total homocysteine in amniotic fluid显示文摘背景:Methylmalonic 酸尿(MMA ) 是在中国的器官的酸尿的最经常的疾病。各种各样的生物化学的策略为 MMA 的出生前的诊断被跟随。然而,后来, MMA 影响的胎儿减少了 methylmalonic 酸的排泄,出生前的生物化学的诊断的困难是明显的。煤气的层析团分光术(GC/MS ) 和双人脚踏车团分光术(ESI/MS/MS ) 允许我们在影响胎儿识别疾病。这研究的目的是在 MMA 的出生前的诊断在羊膜的液体决定有机酸和全部的人半胱氨酸的分析的价值。方法:临床诊断并且有 MMA 的九个职业人员乐队的结果并且出生前在风险基于九个胎儿的生物化学的分析诊断因为 MMA 被调查。从在为 MMA 的风险的怀孕和新陈代谢的联盟者正常怀孕的羊膜的液体样品在 16 点被获得 - 24 星期怀孕期。Methylmalonic 酸和甲基枸橼酸被 GC/MS 测量, propionylcarnitine 被 ESI/MS/MS 分析,并且全部的人半胱氨酸由荧光极化免疫分析是坚定的。结果:在二怀孕, methylmalonic 酸的高水平,甲基枸橼酸, propionylcarnitine,和总数,人半胱氨酸在胎儿显示了联合 MMA 和 homocysteinemia。继续的怀孕和收到的维生素 B12 作为出生前的处理,和其它补充的母亲之一终止了她的怀孕。在一个,怀孕, methylmalonic 酸的显著地提高的层次,甲基枸橼酸,和 propionylcarnitine,和正常全部的人半胱氨酸铺平被发现在胎儿显示孤立的 MMA;流产在这个案例上被执行。在另外的六怀孕,上述提及的代谢物的所有层次是正常的建议胎儿没被 MMA 影响。diagnoses 被严峻的尿有机酸和血浆总数人半胱氨酸在交货以后证实。结论:MMA 的新陈代谢的畸形在怀孕期早发生。在羊膜的液体的全部的人半胱氨酸的水平可以是胎儿的联合 MMA 和 homocysteinemia 的另外的指示物。在羊膜的液体的全部的人半胱氨酸水平的决心可以为疾病的出生前的诊断成为一个方便、可靠的方法。 | ZHANG Yao YANG Yan-ling HASEGAWA Yuki YAMAGUCHI Seiji SHI Chun-yan SONG Jin-qing SAYAMI Sujan LIU Ping YAN Rong DONG Jin-hua QIN Jiong | 2008 | Chinese Medical Journal2008,,3: | 18 |
| 15 | Effect of N and P addition on soil organic C potential mineralization in forest soils in South China显示文摘Atmospheric nitrogen deposition is at a high level in some forests of South China. The effects of addition of exogenous N and P on soil organic carbon mineralization were studied to address: (1) if the atmospheric N deposition promotes soil C storage through decreasing mineralization; (2) if the soil available P is a limitation to organic carbon mineralization. Soils (0-10 cm) was sampled from monsoon evergreen broad-leaved forest (MEBF), coniferous and broad-leaved mixed forest (CBMF), and Pinus massoniana forest (PMF) in Dinghushan Biosphere Reserve (located in Guangdong Province, China). The soils were incubated at 25°C for 45 weeks, with addition of N (NH4NO3 solution) or P (KH2PO4 solution). CO2-C emission and the inorganic N (NH4+-N and NO3?-N) of the soils were determined during the incubation. The results showed that CO2-C emission decreased with the N addition. The addition of P led to a short-term sharp increase in CO2 emission after P application, and the responses of CO2-C evolution to P addition in the later period of incubation related to forest types. Strong P inhibition to CO2 emission occurred in both PMF and CBMF soils in the later incubation. The two-pool kinetic model was fitted well to the data for C turnover in this experiment. The model analysis demonstrated that the addition of N and P changed the distribution of soil organic C between the labile and recalcitrant pool, as well as their mineralization rates. In our experiment, soil pH can not completely explain the negative effect of N addition on CO2-C emission. The changes of soil inorganic N during incubation seemed to support the hypothesis that the polymerization of added nitrogen with soil organic compound by abiotic reactions during incubation made the added nitrogen retard the soil organic carbon mineralization. We conclude that atmospheric N deposition contributes to soil C accretion in the three subtropical forest ecosystems, however, the shortage of soil available P in CBMF and PMF may also retard soil organic C mineralization. | OUYANG, Xuejun ZHOU, Guoyi HUANG, Zhongliang ZHOU, Cunyu LI, Jiong SHI, Junhui ZHANG, Deqiang | 2008 | Journal of Environmental Sciences2008,20,9: | 17 |
| 16 | Dependence of Soil Respiration on Soil Temperature and Soil Moisture in Successional Forests in Southern China显示文摘在有癌症的回归线附近的森林里的生物物理的因素的土壤呼吸和它的关系的空间、时间的变化仍然保持高度不明确。为了向实际估计,土壤呼吸率,土壤温度,和土壤潮湿的改进作出贡献,从 2003 年 3 月在南部的中国在 Dinghushan 自然保护区(DNR ) 在三个接连著的副热带的森林里被测量到 2005 年 2 月。现在的学习的全面目的是在这些森林里分析土壤呼吸和它的生物物理的依赖的时间的变化。在生物物理的因素和土壤呼吸率之间的关系在接连著的森林里被比较测试这些森林同样回答了到生物物理的因素的假设。土壤呼吸的 seasonality 与季节的气候模式与一致,与在热潮湿的季节(4 月 9 月) 的高呼吸率并且与在凉爽的干旱期(10 月三月) 的低率。在这些森林测量的土壤呼吸与进步继任显示出一个清楚的增加趋势。DNR 森林里的土壤呼吸率是的累年平均(± SD )(9.0 ± 4.6 ) Mg CO_2-C/hm^2 每年,从(6.1 ± 3.2 ) Mg CO_2-C/hm^2 每早接连著的森林到里的年(10.7 ± 4.9 ) Mg CO^2-C/hm^2 每先进接连著的森林里的年。Soilrespiration 与土壤温度和潮湿被相关。在二个生物物理的变量正在驾驶因素的地方, T/M 模型在 DNRforests 说明了 74%-82%of 土壤呼吸变化。温度敏感沿着进步继任阶段减少了,建议 thatadvanced 接连著的森林有一个好能力适应温度。相反,潮湿与进步继任过程增加了。部分地,这增加被丰富的口罩在进展接连著的森林里引起,在更多的土壤潮湿被需要维持他们的活动的地方。 | Xu-Li Tang Guo-Yi Zhou Shu-Guang Liu De-Qiang Zhang Shi-Zhong Liu Jiong Li Cun-Yu Zhou | 2006 | Journal of Integrative Plant Biology2006,48,6: | 17 |
| 17 | An Integrated Analysis of Risk Factors of Cognitive Impairment in Patients with Severe Carotid Artery Stenosis显示文摘Objective To investigate cognitive dysfunction in patients with carotid artery stenosis(CAS) and potential risk factors related to cognitive-especially memory-dysfunction. Methods Forty-seven patients with carotid artery stenosis were recruited into our study cohort. The Mini-Mental State Examination(MMSE) and the Montreal Cognitive Assessment(MoCA) were adopted to assess cognitive function, the Wechsler Memory Scale(WMS) to assess memory function, high-resolution MRI and enhanced ultrasound to evaluate carotid plaques, and computed tomography perfusion(CTP) imaging to evaluate intracranial blood perfusion. Single-factor analysis and multiple-factor regression analysis were used to analyze potential risk factors of cognitive impairment. Results Mini-Mental State Examination test results showed that 22 patients had cognitive impairment, and MoCA test results showed that 10 patients had cognitive impairment. Analysis of various risk factors indicated that the average memory quotient of female patients was higher than that of males(P = 0.024). The cognitive and memory performance of those with an educational background above high school were significantly better than those of participants with high school or lower(P = 0.045). Patients with abnormal intracranial perfusion performed worse on the MMSE test(P = 0.024), and their WMS scores were significantly lower(P = 0.007). The MMSE scores and the memory quotients were significantly lower in patients with a history of cerebral infarction(MMSE, P = 0.047, memory quotient score, P = 0.018). Conclusion A history of cerebral infarction and abnormal cerebral perfusion are associated with decline in overall cognitive function and memory in patients with carotid stenosis. Being female and having an educational background above high school may be protective factors in the development of cognitive dysfunction. | LUO Ru Tao WANG Pei Jiong DENG Xiao Feng ZHOU Shu Jie ZHAO Meng QIAN Jing ZHANG Dong WANG Rong ZHANG Yan | 2018 | Biomedical and Environmental Sciences2018,31,11: | 17 |
| 18 | Sequential invasive-noninvasive mechanical ventilation weaning strategy for patients after tracheostomy显示文摘BACKGROUND: Because the continuity and integrity of the trachea are likely damaged to some extent after tracheostomy, the implementation of sequential ventilation has certain difficulties, and sequential invasive-noninvasive ventilation on patients after tracheostomy is less common in practice. The present study aimed to investigate the feasibility of invasive-noninvasive sequential weaning strategy in patients after tracheostomy.METHODS: Fifty patients including 24 patients with withdrawal of mechanical ventilation(conventional group) and 26 patients with sequential invasive-noninvasive weaning by directly plugging of tracheostomy(sequential group) were analyzed retrospectively after appearance of pulmonary infection control(PIC) window. The analysis of arterial blood gases, ventilator-associated pneumonia(VAP) incidence, the total duration of mechanical ventilation, the success rate of weaning and total cost of hospitalization were compared between the two groups.RESULTS: Arterial blood gas analysis showed that the sequential weaning group was better than the conventional weaning group 1 and 24 hours after invasive ventilation. The VAP incidence was lowered, the duration of mechanical ventilation shortened, the success rate of weaning increased, and the total cost of hospitalization decreased.CONCLUSION: Sequential invasive-noninvasive ventilator weaning is feasible in patients after tracheostomy. | Xue-xue Pu Jiong Wang Xue-bo Yan Xue-qin Jiang | 2015 | World Journal of Emergency Medicine2015,6,3: | 17 |
| 19 | Clinical and laboratory survey of 65 Chinese patients with Leigh syndrome显示文摘Background Leigh syndrome is an inherited neurodegenerative disease that emerges in infancy and childhood and presents with a clinically heterogeneous variety of neuromuscular and non-neuromuscular disorders. It can result from the inheritance of mutations in either nuclear or mitochondrial DNA. In the current study, we performed a retrospective study in 65 patients in order to investigate the clinical and genetic characteristics of Leigh syndrome in Chinese patients. Methods Sixty-five unrelated cases (35 men and 30 women) who were hospitalized in the past 12 years were reviewed. Diagnosis was based on both the clinical presentation and the characteristic neuropathologic findings of bilateral symmetric necrotizing lesions in the basal ganglia and brain stem as detected using cranial computed tomography (CT) scan or magnetic resonance imaging (MRI). The differential diagnosis of organic acidurias and fatty acid ?-oxidation defects were performed. Specific point mutations and deletions in mitochondrial DNA (T8993G, T8993C, T9176C, A8344G, A3243G) were screened by PCR-restriction analysis and Southern blot. The SURF1 gene was sequenced. Skeletal muscle biopsies were performed in 17 (26.2%) of the patients. The diagnosis was confirmed by autopsy in 6 (9.2%) patients. Results The patients had various forms of metabolic encephalomyopathy. Fifty-nine (90.8%) of the patients had the typical neuroradiological features of Leigh syndrome, including symmetrical necrotizing lesions scattered within the basal ganglia, thalamus and brain stem. Twenty (30.8%) patients were confirmed by genetic, biochemical analysis and autopsy. Specific point mutations in mitochondrial DNA were found in 5 cases (7.7%). Of these, the A8344G mutation was detected in 2 patients. The T8993G, T8993C, and A3243G point mutations were identified in 3 other patients, respectively. SURF1 mutations associated with cytochrome c oxidase deficiency were identified in 8 (12.3%) families by DNA sequencing. A G604C mutation was identified in 6 (9.2%) patients. The genotypes of 52 patients remained unknown. Conclusions Leigh syndrome presents as a diverse array of clinical features and can result from specific mutations in nuclear or mitochondrial DNA. In this study, SURF1 mutations associated with cytochrome c oxidase deficiency were identified in 8 (12.3%) out of 65 patients with Leigh syndrome. It indicates that SURF1 mutations might be a common cause of Leigh syndrome in China. The etiology of Leigh syndrome in Chinese patients represents a persistent challenge to clinicians. | YANG Yan-ling SUN Fang ZHANG Yao QIAN Ning YUAN Yun WANG Zhao-xia QI Yu XIAO Jiang-xi WANG Xiao-ying QI Zhao-yue ZHANG Yue-hua JIANG Yu-wu BAO Xin-hua QIN Jiong WU Xi-ru | 2006 | Chinese Medical Journal2006,,5: | 17 |
| 20 | Decreased osteogenesis of adult mesenchymal stem cel s by reactive oxygen species under cyclic stretch: a possible mechanism of age related osteoporosis显示文摘Age related defect of the osteogenic differentiation of mesenchymal stem cells(MSCs) plays a key role in osteoporosis. Mechanical loading is one of the most important physical stimuli for osteoblast differentiation.Here, we compared the osteogenic potential of MSCs from young and adult rats under three rounds of 2 h of cyclic stretch of 2.5% elongation at 1 Hz on 3 consecutive days. Cyclic stretch induced a significant osteogenic differentiation of MSCs from young rats, while a compromised osteogenesis in MSCs from the adult rats.Accordingly, there were much more reactive oxygen species(ROS) production in adult MSCs under cyclic stretch compared to young MSCs. Moreover, ROS scavenger N-acetylcysteine rescued the osteogenic differentiation of adult MSCs under cyclic stretch. Gene expression analysis revealed that superoxide dismutase 1(SOD1) was significantly downregulated in those MSCs from adult rats. In summary, our data suggest that reduced SOD1 may result in excessive ROS production in adult MSCs under cyclic stretch, and thus manipulation of the MSCs from the adult donors with antioxidant would improve their osteogenic ability. | Jiali Tan Xin Xu Zhongchun Tong Jiong lin Qiujun Yu Yao Lin Wei Kuang | 2015 | Bone Research2015,3,1: | 15 |