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1344篇 您的检索式:作者名="Niu C"
    题名 作者 年代 出处 被引量
1Shunting branch of portal vein and stent position predict survival after transjugular intrahepatic portosystemic shunt显示文摘AIM:To evaluate the effect of the shunting branch of the portal vein(PV)(left or right)and the initial stent position(optimal or suboptimal)of a transjugular intrahepatic portosystemic shunt(TIPS).METHODS:We retrospectively reviewed 307 consecu5tive cirrhotic patients who underwent TIPS placement for variceal bleeding from March 2001 to July 2010 at our center.The left PV was used in 221 patients and the right PV in the remaining 86 patients.And,224 and83 patients have optimal stent position and sub-optimal stent positions,respectively.The patients were followed until October 2011 or their death.Hepatic encephalopathy,shunt dysfunction,and survival were evaluated as outcomes.The difference between the groups was compared by Kaplan-Meier analysis.A Cox regression model was employed to evaluate the predictors.RESULTS:Among the patients who underwent TIPS to the left PV,the risk of hepatic encephalopathy(P=0.002)and mortality were lower(P<0.001)compared to those to the right PV.Patients who underwent TIPS with optimal initial stent position had a higher primary patency(P<0.001)and better survival(P=0.006)than those with suboptimal initial stent position.The shunting branch of the portal vein and the initial stent position were independent predictors of hepatic encephalopathy and shunt dysfunction after TIPS,respectively.And,both were independent predictors of survival.CONCLUSION:TIPS placed to the left portal vein with optimal stent position may reduce the risk of hepatic encephalopathy and improve the primary patency rates,thereby prolonging survival.Ming Bai Chuang-Ye He Xing-Shun Qi Zhan-Xin Yin Jian-Hong Wang Wen-Gang Guo Jing Niu Jie-Lai Xia Zhuo-Li Zhang Andrew C Larson Kai-Chun Wu Dai-Ming Fan Guo-Hong Han 2014World Journal of Gastroenterology2014,20,3:26
2Vascular endothelial growth factor receptor 2(VEGFR-2) plays a key role in vasculogenic mimicry formation,neovascularization and tumor initiation by Glioma stem-like cells显示文摘Human glioblastomas(GBM)are thought to be initiated by glioma stem-like cells(GSLCs).GSLCs also participate in tumor neovascularization by transdifferentiating into vascular endothelial cells.Here,we report a critical role of GSLCs in the formation of vasculogenic mimicry(VM),which defines channels lined by tumor cells to supply nutrients to early growing tumors andYao X Ping Y Liu Y Chen K Yoshimura T Liu M Gong W Chen C Niu Q Guo D Zhang X Wang JM Bian X 2013中国神经肿瘤杂志2013,11,3:23
3Mapping landslide susceptibility at the Three Gorges Reservoir, China, using gradient boosting decision tree,random forest and information value models显示文摘This work was to generate landslide susceptibility maps for the Three Gorges Reservoir(TGR) area, China by using different machine learning models. Three advanced machine learning methods, namely, gradient boosting decision tree(GBDT), random forest(RF) and information value(InV) models, were used, and the performances were assessed and compared. In total, 202 landslides were mapped by using a series of field surveys, aerial photographs, and reviews of historical and bibliographical data. Nine causative factors were then considered in landslide susceptibility map generation by using the GBDT, RF and InV models. All of the maps of the causative factors were resampled to a resolution of 28.5 m. Of the 486289 pixels in the area,28526 pixels were landslide pixels, and 457763 pixels were non-landslide pixels. Finally, landslide susceptibility maps were generated by using the three machine learning models, and their performances were assessed through receiver operating characteristic(ROC) curves, the sensitivity, specificity,overall accuracy(OA), and kappa coefficient(KAPPA). The results showed that the GBDT, RF and In V models in overall produced reasonable accurate landslide susceptibility maps. Among these three methods, the GBDT method outperforms the other two machine learning methods, which can provide strong technical support for producing landslide susceptibility maps in TGR.CHEN Tao ZHU Li NIU Rui-qing TRINDER C John PENG Ling LEI Tao 2020Journal of Mountain Science2020,17,3:7
4Pulmonary infection control window in treatment of severe respiratory failure of chronic obstructive pulmonary diseases: a prospective, randomized controlled, multi-centred study显示文摘Background Early withdraw from invasive mechanical ventilation (MV) followed by noninvasive MV is a new strategy for changing modes of treatment. This study was conducted to estimate the feasibility and the efficacy of early extubation and sequential noninvasive MV commenced at beginning of pulmonary infection control window in patients with exacerbated hypercapnic respiratory failure caused by chronic obstructive pulmonary diseases (COPD). Methods A prospective, randomized controlled study was conducted in eleven teaching hospitals' respiratory or medical intensive care units in China. Ninety intubated COPD patients with severe hypercapnic respiratory failure triggered by pulmonary infection (pneumonia or purulent bronchitis) were involved in the study. When the pulmonary infection had been controlled by antibiotics and comprehensive therapy, the 'pulmonary infection control window (PIC window)' has been reached. Each case was randomly assigned to study group (extubation and noninvasive MV via facial mask immediately) or control group (invasive MV was received continuously after PIC window by using conventional weaning technique).Results Study group (n=47) and control group (n=43) had similar clinical characteristics initially and at the time of PIC window. Compared with control group, study group had shorter duration of invasive MV [(6.4±4.4) days vs (11.3±6.2) days, P=0.000], lower rate of ventilator associated pneumonia (VAP) (3/47 vs 12/43, P=0.014), fewer days in ICU [(12±8) days vs (16±11) days, P=0.047] and lower hospital mortality (1/47 vs 7/43, P=0.025).Conclusions In COPD patients requiring intubation and invasive MV for hypercapnic respiratory failure, which is exacerbated by pulmonary infection, early extubation followed by noninvasive MV initiated at the start of PIC window may decrease significantly the duration of invasive MV, the risk of VAP and hospital mortality.Wang, C Zhan, QY Cao, ZX Wei, LQ Cheng, ZZ Liu, S Zhang, JL Chen, RC Luo, Q Niu, SF Zhu, L Wu, DW Fang, BM Wu, TH Wang, CZ Liu, YN 2005Chinese Medical Journal2005,,19:6
5A robust soc-MOF platform exhibiting high gravimetric uptake and volumetric deliverable capacity for on-board methane storage显示文摘Emerging as an outperformed class of metal-organic frameworks(MOFs),square-octahedron(soc)topology MOFs(soc-MOFs)feature superior properties of high porosity,large gas storage capacity,and excellent thermal/chemical stability.We report here an iron based soc-MOF,denoted as Fe-pbpta(H4pbpta=4,4',4'',4'''-(1,4-phenylenbis(pyridine-4,2-6-triyl))-tetrabenzoic acid)possessing a very high Brunauer,Emmett and Teller(BET)surface area of 4,937 m2/g and a large pore volume of 2.15 cm3/g.The MOF demonstrates by far the highest gravimetric uptake of 369 cm3(STP)/g under the DOE operational storage conditions(35 bar and 298 K)and a high volumetric deliverable capacity of 192 cc/cc at 298 K and 65 bar.Furthermore,Fe-pbpta exhibits high thermal and aqueous stability making it a promising candidate for on-board methane storage.Gaurav Verma Sanjay Kumar Harsh Vardhan Junyu Ren Zheng Niu Tony Pham Lukasz Wojtas Sydney Butikofer Jose C Echeverria Garcia Yu-Sheng Chen Brian Space and Shengqian Ma 2021Nano Research2021,14,2:2
6Functional variants in the glutathione peroxidase-1(Gpx-1)gene are associated with an increased risk of keshan disease显示文摘LEI C NIU XL WEI J 2009Clinica Chimica Acta2009,399,:1
7Method for large-scale isolation and purification of R-phycoerythrin from red alga Polysiphonia urceolata Grev显示文摘NIU J F WANG G C TSENG C K 2006Protein Expression and Purification2006,49,:1
8The mechanism of action of beta-D-2'-deoxy-2'-fluoro-2'-C-methylcytidine involves a second metabolic pathway leading to beta-D-2'-deoxy-2'-fluoro-2'-C-methyluridine 5'-triphosphate,a potent inhibitor of the hepatitis C virus RNA-dependent RNA polymerase显示文摘Murakami E Niu C Bao H Micolochick Steuer H M Whitaker T Nachman T Sofia 0,,02:1
9Neoadjuvant chemotherapy followed by concurrent chemoradiation for locoregionally advanced nasopharyngeal carcinoma:Interim results from 2 prospective phase 2 clinical trials显示文摘Kong L Hu C Niu X 2013Cancer2013,119,23:1
10Yin and Yang of PDGF-mediated signaling pathway in the context of HIV infection and drug abuse 显示文摘Yao H Bethel-Brown C Niu F 2014J Neuroimmune Pharmacol2014,9,2:1
11Zircon U-Pb dating and in-si- tu Hf isotopic analysis of Permian peraluminous granite in the Lha- sa terrane, southern Tibet: Implications for Permian collisional orogeny and paleogeography显示文摘Zhu D C Mo X X Niu Y L 2009Tectonophysics2009,469,14:1
12Contralateral neuropathology in dorsal root ganglia in a rat model of noncompressive disc herniation显示文摘Li Y Xi C Niu M 2011Neurosci lett2011,493,12:1
13Electrical resistivity evolution in the annealed amorphous Fe78Si9B13 ribbons 显示文摘Wang W M Niu Y C Wang F 2008Journal of Non-Crystalline Solids2008,354,30:1
14Identification of the haematopoietic stem cell niche and control of the niche size显示文摘Zhang J Niu C Ye L 2003Nature2003,425,6960:1
15Changes in cPKC isoform-specific membrane translocation and protein expression in the brain of hypoxic preconditioned mice 显示文摘Niu C Li J Cui X 2005Neurosci Lett2005,384,:1
16Discussion on the local flexibility due to the crack in a cracked rotor system显示文摘Zou J Chen J Niu J C 2003Journal of Sound and Vibration2003,262,2:1
17Increasing the visible light absorption of graphitic carbon nitride(melon)photocatalysts by homogeneous self-modification with nitrogen vacancies显示文摘Niu P Yin L C Yang Y Q Liu G Cheng H M 2014Advanced Materials2014,26,47:1
18The origin and pre-Cenozo- ic evolution of the Tibetan Plateau显示文摘Zhu D C Zhao Z D Niu Y L 2013Gondwana Research2013,23,4:1
19Effect of plant species richness on methane fluxes and associated microbial processes in wetland microcosms显示文摘Niu C He Z Ge Y 2015Eco- logical Engineering2015,84,:1
20Identification of the haematopoietic stem cell niche and control of the niche size 显示文摘Zhang J Niu C Ye L 2003Nature2003,425,6960:1
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