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Comparison of different preoperative objective nutritional indices for evaluating 30-d mortality and complications after liver transplantation

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World Journal of Gastrointestinal Surgery 2024年第1期16卷 143-154页

作者： Chuan li Hong-Xia Chen Yan-hua Lai Department of Transplantation People’s Hospital of Guangxi Zhuang Autonomous RegionNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Clinical Pharmacy People’s Hospital of Guangxi Zhuang Autonomous RegionNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND The nutritional status is closely related to the prognosis of liver transplant re-cipients,but few studies have reported the role of preoperative objective nutri-tional indices in predicting liver transplant *** To compare the predictive value of various preoperative objective nutritional indicators for determining 30-d mortality and complications following liver transplantation(LT).METHODS A retrospective analysis was conducted on 162 recipients who underwent LT at our institution from December 2019 to June *** This study identified several independent risk factors associated with 30-d mor-tality,including blood loss,the prognostic nutritional index(PNI),the nutritional risk index(NRI),and the control nutritional *** 30-d mortality rate was 8.6%.Blood loss,the NRI,and the PNI were found to be independent risk factors for the occurrence of severe postoperative *** NRI achieved the highest prediction values for 30-d mortality[area under the curve(AUC)=0.861,Plications(AUC=0.643,P=0.011).Compared to those in the high NRI group,the low patients in the NRI group had lower preoperative body mass index and prealbumin and albumin levels,as well as higher alanine aminotransferase and total bilirubin levels,Model for End-stage liver Disease scores and prothrombin time(Plity and severe complications following *** NRI could be an effective tool for transplant surgeons to evaluate perioperative nutritional risk and develop relevant nutritional therapy.

关键词： liver transplantation Nutritional indicator Complications Prognosis Nutrition assessment

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Comparison of CMAS corrosion and sintering induced microstructural characteristics of APS thermal barrier coatings

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Journal of Materials Science & Technology 2019年第3期35卷 440-447页

作者： Yiyou Wu hua Luo Canying Cai Yanguo Wang Yichun Zhou li Yang Guangwen Zhou School of Materials Science and Engineering Xiangtan University Key Laboratory of Low Dimensional Materials & Application Technology of Ministry of Education Xiangtan University Department of Mechanical Engineering & Materials Science and Engineering Program State University of New York at Binghamton

The microstructural features of high-temperature sintered and CaO-MgO-Al_2O_3-SiO_2(CMAS) corroded air plasma sprayed Y_2O_3 stabilized ZrO_2(YSZ) thermal barrier coatings(TBCs) under the thermal gradient condition were comparatively studied. As-sprayed YSZ has a lamellar structure and the lamellae are composed of closely aligned columnar crystals. The sintered and the CMAS corroded YSZ coatings maintain the t'-ZrO_2 phase as the as-sprayed YSZ coating. The sintered YSZ remains the lamellar structure with reduced interlamellar gaps and grains coarsening. After the CMAS corrosion, the top layer of the YSZ coating keeps its lamellar structure consisting of some columnar grains with the CMAS infiltration into the intergrain gaps and the formation of striped Zr_2Y_2 O_7. The typical lamellar structure transforms into more equiaxed grains in the middle and bottom layers of the ceramic coating along with significant infiltration of amorphous CMAS and anorthite formation in the bottom layer owing to the high contents of Ca and Al.

关键词： YSZ thermal barrier coating APS CMAS corrosion Anorthite

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Transport of phosphorus in runoff and sediment with surface runoff from bare purple soil during indoor simulated rainfall

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Journal of Mountain Science 2022年第8期19卷 2333-2345页

作者： MA Xiao YANG Jie ZHOU xiang-jun WU Hong-tao XIONG Qiao li Ye College of Urban and Environmental Sciences Hubei Normal UniversityHuangshi 435002China Hubei Key Laboratory of Pollutant Analysis&Reuse Technology Hubei Key Research Institute of Humanities&Social ScienceHuangshi 435002China School of Resource and Environmental Engineering Wuhan University of TechnologyWuhan 430070China

Phosphorus(P)in surface runoff from purple soil is a critical element of agricultural nonpoint source pollution,leading to eutrophication of surface waters in the Three Gorges Reservoir Area(TGRA)of *** work aimed to understand the processes and mechanisms of P losses from bare purple *** on an indoor rainfall simulation experiment,we focused on the processes of surface runoff and P losses via different hydrological *** treatments included three simulated rainfall intensities,four slope gradients,and three fertilizer treatments.P loss from sediment was the main pathway in the purple soil,and bioavailable P was mainly transferred in dissolved P(DP)of runoff *** P loss loads tend to grow with the increase of the slope until 25°for the maximum load of runoff water and 20°for the maximum load of *** of DP in the surface runoff after fertilizer application can exceed the estimates of those required for accelerated *** P control might be an essential way for reducing P loss in purple soil for the local government and farmers of TGRA.

关键词： Surface runoff Sediment yield Phosphorus loss Purple soil Simulated rainfall

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Fe doped g-C_(3)N_(4) composited ZnIn_(2)S_(4) promoting Cr(Ⅵ) photoreduction

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Chinese Chemical Letters 2023年第4期34卷 430-435页

作者： Zhuoga Cirena Yu Nie Yanfang li Huilin Hu xiang huang Xin Tan Tao Yu School of Environmental Science and Engineering Tianjin UniversityTianjin 300350China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China School of Science Tibet UniversityLhasa 850000Chin

30% Fe CN/ZIS(30% Fe doped g-C_(3)N_(4)composited ZnIn_(2)S_(4)) was synthesized by a simple water bath method, via in-situ growth of abundant well-dispersed ZnIn_(2)S_(4)nanosheets on the Fe doped g-C_(3)N_(4)surface. Experimental results showed the optimized 30% Fe CN/ZIS achieved the best photoreduction of Cr(VI)performance within a wide p H range, which was 9.5 times and 700 times higher than that of pure ZnIn_(2)S_(4)and 30% Fe CN(Fe doped g-C_(3)N_(4)). This is due to the intense synergy between the Fe-Nxbond and close interface contact produces a high-speed charge transfer channel, thus significantly improving the efficiency of optical carrier separation and migration. Meanwhile, UV-vis diffuse reflection spectra and photoluminescence spectroscopy showed that iron doping significantly narrowed the bandgap of gC_(3)N_(4), preventing electron-hole pair recombination. Further, the microstructures and charge separation properties were analyzed by scanning electron microscope, Photoluminescence Spectroscopy and timeresolved photoluminescence, which revealed the structure-activity relationship of composite structure and the synergistic mechanism of each functional component. This research should provide a viable technique for creating composites with high photocatalytic activity for the treatment of chromium-containing wastewater.

关键词： Hexavalent chromium 30%FeCN/ZIS composites Interfacial interaction Synergistic effect

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Characterization of low-N responses in maize(Zea mays L.) cultivars with contrasting nitrogen use efficiency in the North China Plain

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Journal of Integrative Agriculture 2019年第9期18卷 2141-2152页

作者： li xiang-ling GUO li-guo ZHOU Bao-yuan TANG xiang-ming CHEN Cong-cong ZHANG Lei ZHANG Shao-yun li Chong-feng XIAO Kai DONG Wei-xin YIN Bao-zhong ZHANG Yue-chen College of Agronomy Hebei Agricultural University/Key Laboratory of Crop Growth Regulation of Hebei ProvinceBaoding 071001P.R.China Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and ProductionMinistry of Agriculture and Rural AffairsBeijing 100081P.R.China College of Plant Protection Hebei Agricultural UniversityBaoding 071001P.R.China Teaching Support and Service Center Hebei Radio and TV UniversityShijiazhuang 050080P.R.China

Over-use of N fertilizer in crop production has resulted in a series of environmental problems in the North China Plain(NCP).Thus,improvement of nitrogen use efficiency(NUE)in summer maize has become an effective strategy for promoting sustainable agriculture in this *** twenty maize cultivars,plant dry matter production,N absorption and accumulation,yield formation,and NUE in summer maize were investigated under three N levels in two growing *** on their yield and yield components,these maize cultivars were categorized into four groups including efficient-efficient(EE)cultivars,high-nitrogen efficient(HNE)cultivars,low-nitrogen efficient(LNE)cultivars and nonefficient-nonefficient(NN)*** both two seasons,the EE cultivars improved grain yield together with increased plant biomass,and enhanced accumulative amounts as well as higher average grain yields than the other cultivar groups under deficient-N *** correlations were observed between yield and kernel numbers(KN),dry matter(DM)amount and N accumulation at both post-silking and maturity *** and N accumulation at late growth stage(i.e.,from silking to maturity)contributed largely to the enhanced yield capacity and improved NUE under N-deficient *** with the NN cultivars,the EE cultivars also showed increased N assimilation amount(NAA)and N remobilization content(NRC),and elevated N remobilization efficiency(NRE),NUE and nitrogen partial factor productivity(PFPN).Our investigation has revealed N-associated physiological processes and may provide guidance for cultivation and breeding of high yield and NUE summer maize under limited N conditions in the NCP.

关键词： summer maize N deficiency yield dry matter production N accumulative amount

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Some New Features of linear Theory for Describing Non-linear Diffusion

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Communications in Theoretical Physics 2009年第8期52卷 269-273页

作者： li Hang ZHU hua-ling JIA Ming-Yun WU Lao-Sheng College of Resources and Environment Southwest University Chongqing 400716 China Department of Environmental Sciences University of California Riverside CA 92507

The non-linear flux equation, the non-linear Fokker-Planck equation （or Smoluchowski equation）, and the non-linear Langiven equation are the basic equations for describing particle diffusion in non-ideal system subjected to time-dependent external fields. Nevertheless, the exact solution of those equations is still a challenge because of their inherent complexity of the non-linear mathematics. li et al. found that, based on the defined apparent variables, the nonlinear Fokker-Planck equation and the non-linear flux equation could be transformed to linear forms under the condition of strong friction limit or loeal equilibrium assumption. In this paper, some new features of the theory were found：（i） The linear flux equation for describing non-linear diffusion can be obtained from the irreversible thermodynamic theory; （ii） The linear non-steady state diffusion equation for describing non-linear diffusion of the non-steady state, which was described by the non-linear Fokker-Planek equation, can be derived more consistently from the microscopic molecular statistical theory; （iii） In the theory, the non-linear Langiven equation also bears a linear form; （iv） For some special cases, e.g. diffusion in a periodic total potential system, the local equilibrium assumption or the strong friction limit is not required in establishing the linear theory for describing non-linear diffusion, so the linear theory may be important in the study of Brown motor.

关键词： non-linear diffusion linear theory

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Phase-field simulation of tip splitting in dendritic growth of Fe-C alloy

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Journal of Iron and Steel Research International 2017年第2期24卷 171-176页

作者： Yong-sheng Kang Yu-chun Jin Yu-hong Zhao hua Hou li-wen Chen Material Science and Engineering Institute North University of China Taiyuan 030051 Shanxi China

Two types of dendrite tip splitting including dendrite orientation transition and twinned-like dendrites in Fe-C alloys were investigated by phase-field method. In equiaxed growth, the possible dendrite growth directions and the effect of supersaturation on tip splitting were discussed; the dendrite orientation transition was observed, and it was found that the orientation regions of anisotropy parameters were reduced from three to two with increasing the supersaturation, which was due to the effect of interracial anisotropy controlled by the solute in front of S/L interface changing with the increase of supersaturation. In directional solidification, it was found that the twinned like dendrites were formed with the fixed anisotropy couples and no seaweed dendrites were observed; these were concluded from the results of competition between process anisotropy and inherent anisotropy. The formation process of twinned-like dendrite was investigated by tip splitting phenomenon, which was related to the chan ges of dendrite tips growth velocity. Then, the critical speed of tips splitting and solute concentration of twinned-like dendrites were investigated, and a new type of microsegregation in Fe-C alloys was proposed to supplement the dendrite growth theories.

关键词： Tip splitting Fe C alloy Interracial anisotropy Dendritic growth

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Determination of delay time in individual transfer function for central aortic pressure reconstruction

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Science China(life Sciences) 2014年第10期57卷 1034-1038页

作者： YU DanYang xiang HaiYan li DeYu WANG YuQi YU MengSun School of Biological Science and Medical Engineering Beihang University Department of Medical Engineering the 201st Hospital of the Chinese Peoples' s Liberation Army Department of Aviation Medical Engineering Institute of Aviation Medicine

In previous research, time-delay （△t） was a more important parameter than the reflection coefficient in the individual transfer function of central aortic pressure reconstruction. The At can be obtained by electrocardiography （ECG） or phonocardiography （PCG）. Because the pre-ejection period remains an uncertain factor, the present study used ECG and PCG to define the delay time and analyzed the accuracy of the reconstruction results. The △tpre is the actual delay time derived from the aorta to the carotid pressure wave, △tpco is the time delay between the aortic valve component of the second heart sound and the dicrotic incisura of the carotid pressure wave, and AtEcc represents the delay from the interval of the ECG R-peak to the foot of the carotid pressure wave. Compared with the measured aortic pressure, the reconstruction result obtained by △t=△tpcslightly differed from the best result estimated by △t=△tpre. However, the differences between the result obtained by △t=△tEco and the best result were significant in terms of the diastolic blood pressure, and pulse pressure, and especially in terms of the augmentation index and root-mean-square-error. Thus, the At should be determined by PCG for central aortic pressure reconstruction in practice.

关键词： central aortic pressure delay time PCG ECG

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Combination of cataract surgery with intravitreal injection of dexamethasone intravitreal implant(Ozurdex)for uveitis-induced cataract

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International Journal of Ophthalmology(English edition) 2023年第3期16卷 361-366页

作者： Jin Deng Wen-Tao Sun hua Ai li-Ping Wang Xi’an People’s Hospital(Xi’an Fouth Hospital) Shaanxi Eye HospitalAffiliated People’s Hospital of Northwest UniversityXi’an 710004Shaanxi ProvinceChina

AIM:To evaluate the long-term results of patients with chronic uveitis-induced cataract by phacoemulsification with IOL implantation and intravitreal injection of dexamethasone(DEX)intravitreal implant(Ozurdex).METHODS:The study included 32 eyes of 26 patients treated with DEX implant due to chronic uveitis-induced cataract and followed up for at least a ***-corrected visual acuity(BCVA),intraocular pressure(IOP),anterior chamber reaction,central macular thickness(CMT),intraoperative and postoperative complications and uveitis recurrence were analyzed ***:A successful surgery was performed in all *** average follow-up period was *** female/male ratio was 13/*** age was 45.65±3.83y(range 26 to 65y).Etiologically,rheumatic arthritis occurred in 6 patients(18.75%),ankylosing spondylitis in 4(12.50%),HLA-B27 associated uveitis in 3(9.38%),Vogt-KoyanagiHarada-associated uveitis in 4(12.50%),Behcet’s disease in 2(6.25%),and 7(21.88%)suffered from unknown *** 32 eyes had varying degrees of improvement at 12mo after surgery,with 2 eyes showing BCVA of 0.1 or below(6.25%),6 having 0.1-0.5(18.75%),18 of 0.5-1.0(56.25%),and 6 of 1.0 or above(18.75%).No cases with increased IOP were *** values of mean CMT was increased at day 1,decreased at 1,3mo after surgery and increased at 6,12mo after *** severe uveitis reactions,such as fibrinous exudates in the anterior chamber and exudative membrane formation on the anterior surface of the IOL,were observed after ***:The present studies show that intravitreal injection of Ozudex during cataract operation can provide a new option for the clinical treatment of uveitis-induced cataract.

关键词： uveitis-induced cataract dexamethasone implant intravitreal injection

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Neural differentiation from embryonic stem cells in vitro : An overview of the signaling pathways

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World Journal of Stem Cells 2015年第2期7卷 437-447页

作者： Jen-hua Chuang li-Chu Tung Yenshou lin Department of life Science National Taiwan Normal University

Neurons derived from embryonic stem cells(ESCs) have gained great merit in both basic research and regenerative medicine. Here we review and summarize the signaling pathways that have been reported to be involved in the neuronal differentiation of ESCs,particularly those associated with in vitro differentiation. The inducers and pathways explored include retinoic acid, Wnt/b-catenin, transforming growth factor/bone morphogenetic protein, Notch, fibroblast growth factor, cytokine, Hedgehog, c-Jun N-terminal kinase/mitogen-activated protein kinase and others. Some other miscellaneous molecular factors that have been reported in the literature are also summarized and discussed. These include calcium, calcium receptor, calcineurin, estrogen receptor, Hox protein, ceramide, glycosaminioglycan, ginsenoside Rg1, opioids, two pore channel 2, nitric oxide, chemically defined medium, cellcell interactions, and physical stimuli. The interaction or crosstalk between these signaling pathways and factors will be explored. Elucidating these signals in detail should make a significant contribution to future progress in stem cell biology and allow, for example, better comparisons to be made between differentiation in vivo and in vitro. Of equal importance, a comprehensive understanding of the pathways that are involved in the development of neurons from ESCs in vitro will also accelerate their application as part of translational medicine.

关键词： Neurons Differentiation Embryonic stemcells Signaling Pathways

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