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Precision Chemistry 2023年第10期1卷 608-615页

作者： Xu-Yong Chen Li-Hui Cao xiang-Tian bai Xiao-Jie Cao Dan Yang Yi-Da Gao Shaanxi Key Laboratory of Chemical Additives for Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi’an 710021P.R.China

Grasping proton transport pathways and mecha-nisms is vital for the application of fuel cell ***,we screened four guanidinium organosulfonate charge-assisted hydro-gen-bonded organic frameworks(HOFs),namely,GBBS,G3TSPHB,G4TSP,and G6HSPB,which possess high hydrogen-bonded density proton transport networks shaped like *** materials were prepared by self-assembly through charge-assisted interactions between guanidinium cations and organo-sulfonate anions,as well as by host-guest *** 80℃ and 93%RH,the proton conductivity of GBBS,G3TSPHB,G4TSP,and G6HSPB can reach 4.56×10^(-2),2.55×10^(-2),4.01×10^(-2),and 10^(-1) cm^(-1),Doping G6HSPB into the Nafion matrix prepared composite membranes for testing the performance of fuel *** 80°C and 98%RH,the proton conductivity of 9%-G6HSPB@Nafion reached a maximum value of 1.14×10^(-1) S cm^(-1),which is 2.8 times higher than recast *** results showed that charge-assisted HOFs with high proton channel density have better proton transport properties,providing a reference for the design of highly proton-conducting materials.

关键词： hydrogen-bonded organic frameworks charge-assisted nanotubular proton conduction proton exchange membrane

Influence of operative timing on prognosis of patients with acute subdural hematoma

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Chinese Journal of Traumatology 2009年第5期12卷 -页

作者： Hong ZHAO[a] xiang-jun bai[a] Department of Traumatic Surgery Tongji HospitalTongji Medical College Huazhong University of Science and Technology Wuhan 430030 China

Objective: To study the influence of operative timing on the prognosis of patients with acute subdural hematoma (ASDH) in order to provide theoretical basis for clinical ***: The clinical data of 202 patients with ASDH undergoing operations were collected, and the mortalities and functional survival rates were analyzed 2, 4, 6, and 8 hours after ***: No significant difference was found in mortalities and functional survival rates at different operative timings. However, there was a clear trend that the shorter the operative timing was, the lower the mortality and the higher functional survival rate were. In addition, the mean time from injury to operation of non-survivors was significantly longer than that of ***: Operative timing has potential influences on the prognosis of patients with ASDH. Surgical evacuation of ASDH should be performed as soon as possible once the operation indication emerges.

关键词： Subdural effusion Prognosis Surgery,operative

Composite electrolyte with self-inserted structure and all-trans F conformation provides fast Li^(+) transport for solid-state Li metal batteries

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InfoMat 2024年第11期6卷 81-93页

作者： Ziyang Liang Chang Liu xiang bai Jiahui Zhang Xinyue Chang Lixiang Guan Tiantian Lu Huayun Du Yinghui Wei Qian Wang Tao Wei Wen Liu Henghui Zhou College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuanShanxithe People's Republic of China Shanxi Energy Internet Research Institute TaiyuanShanxithe People's Republic of China College of Chemistry and Molecular Engineering Peking UniversityBeijingthe People's Republic of China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiangthe People's Republic of China State Key Lab of Chemical Resource Engineering College of Science and College of Energy Beijing University of Chemical TechnologyBeijingthe People's Republic of China

Solid-state Li metal battery has attracted increasing interests for its potentiallyhigh energy density and excellent safety assurance, which is a promising candidatefor next generation battery system. However, the low ionic conductivityand Li^(+) transport number of solid-state polymer electrolytes limit their practicalapplication. Herein, a composite polymer electrolyte with self-insertedstructure is proposed using the layered double hydroxides (LDHs) as dopant toachieve a fast Li^(+) transport channel in poly(vinylidene-co-trifluoroethylene) [P(VDF-TrFE)] based polymer electrolyte. In such a composite electrolyte, P(VDF-TrFE) polymer has an all-trans conformation, in which all fluorineatoms locate on one side of the polymer chain, providing fast Li^(+) transporthighways. Meanwhile, the LDH can immobilize the anions of Li salts based onthe electrostatic interactions, promoting the dissociation of Li salts, therebyenhancing the ionic conductivity (6.4 × 10^(-4) S cm^(-1)) and Li^(+) transferencenumber (0.76). The anion immobilization effect can realize uniform electricfield distribution at the anode surface and suppress the dendritic Li ***, the hydrogen bonding interaction between LDH and polymerchains also endows the composite electrolyte with strong mechanical ***, at room temperature, the Li jj Li symmetric cells can be stablycycled over 1000 h at a current density of 0.2 mA cm^(-2), and the full cells withLiFePO_(4) cathode deliver a high capacity retention (>95%) after 200 cycles. This work offers a promising route to construct solid-state polymer electrolytes withfast Li^(+) transport.

关键词： LDH Li metal batteries Li^(+) transport channel P(VDF-TrFE) solid-state polymer electrolytes

Information processing for unmanned aerial vehicles(UAVs)in surveying,mapping,and navigation

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Geo-Spatial Information Science 2018年第1期21卷 1-1页

作者： Gui-Song Xia Mihai Datcu Wen Yang xiang bai LIESMARS(State Key Lab.) Wuhan UniversityWuhanChina German Aerospace Center(DLR) MunichGermany School of Electronic Information Wuhan UniversityWuhanChina Huazhong University of Science and Technology WuhanChina

Unmanned Aerial Vehicles(UAVs)have been involved in a wide range of remote sensing *** particular,recent developments in robotics,computer vision,and geomatics technologies have made it possible to capture a huge amount of visual data with low-cost *** a kind of rapid,flexible and low-cost data acquisition system,UAVs have shown great potential to perform numerous surveying,mapping.

关键词： surveying computer cost

Apoptosis of human colon carcinoma HT-29 cells induced by ceramide

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World Journal of Gastroenterology 2006年第22期12卷 3581-3584页

作者： Xiao-Feng Zhang bai-xiang Li Chun-Yan Dong Rui Pen Department of toxicology Public Health College Harbin Medical UniversityHarbin 150081 Heilongjiang Province China Department of Digestive Medicine Changhai Hospital Shanghai 200433 China

AIM： To investigate the effect of exogenous ceramideinduced apoptosis on human colon carcinoma HT-29 cells. METHODS： Light microscope, transmission electron microscope and fluorescence microscope were used to observe the morphology change of apoptosis in HT-29 cells. Agarose gel electrophoresis was performed to detect the DNA fragment. Mitochondrial function was detected by MTT assay, mRNA expression of Bcl-2 family gene members was determined by reverse transcription polymerase chain reaction （RT-PCR） assay. RESULTS： After C2-ceramide treatment, typical characteristics of apoptosis, such as nuclear chromatin breakage, apoptotic body and DNA ladder, could be observed. After exposure to 50μmol/L C2-ceramide for 12 and 24 h, cell apoptosis was 64.1% and 81.3% respectively, which had a time-and dose-effect relationship. Mitochondrial function started to decrease from 6 h after exposure to ceramide. Meanwhile, ceramide up-regulated or down-regulated the mRNA expression of Bcl-2 family gene members. CONCLUSION： Ceramide induces apoptosis of human colon carcinoma HT-29 cells by affecting the expression of Bcl-2 family gene members and impacting the mitochondrial function.

关键词： Ceramide Apoptosis Human colon carcinomacells Bcl-2 family gene member Mitochondrial function

Discussion on heat source mechanism and geothermal system of Qinghai Gonghe-Guide Basin

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Journal of Groundwater Science and Engineering 2015年第1期3卷 86-97页

作者： Wang Bin LI bai-xiang LI Fu-cheng National Key Laboratory of Hydrogeology and Geothermal Geology of Qinghai Province Qinghai Institute of Hydrogeological Engineering Geological and Environmental Geological Survey Second Institute of Geological and Mineral Exploration Gansu Bureau of Geology and Mineral Resources

The Qinghai Gonghe-Guide Basin together with the alternatively distributed mountainous region shows characteristics that the conductive geothermal resource of the basin has high geothermal gradient, the granite occurs in the bottom of borehole for geothermal exploration, and the convective hot springs in the basin-edge uplift fracture are in zonal distribution and with high-temperature geothermal water. There are still some divergences about the heat source mechanism of the basin. In this paper, queries to the view of mantle-derived heat source have been put forward, coming up with geochemical evidences to prove that the radiogenic heat of granite is the heat source within the mantle. Additionally, temperature curve is drawn based on the geothermal boring and geochemical geothermometer has been adopted for an estimation of the temperature and depth of the geothermal reservoir, it has been found that the surrounding mountains belong to the medium-temperature geothermal system while the area within the basin belongs to the high-temperature geothermal system with the temperature of borehole bottom reaching up to 175-180 ℃. In this paper, discussions on the problems existing in the calculation of geothermal gradient and the differences generated by the geothermal system have been carried out.

关键词： Heat source mechanism Mantle-derived heat source Radiogenic heat of granite Estimation of temperature and depth of geothermal reservoir Geothermal system

Production of biscuits by substitution with different ratios of yellow pea flour

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Grain & Oil Science and Technology 2019年第4期2卷 91-96页

作者： Jikai Zhao Xin Liu xiang bai Fengcheng Wang College of Food Science and Technology Henan University of TechnologyZhengzhou 450001China Department of Biological and Agricultural Engineering Kansas State UniversityManhattan 66506USA Department of Food Science and Nutrition University of Minnesota-Twin CitiesMinneapolis 55455USA

To promote the commercialization of yellow pea flour(YPF)due to its nutritional *** biscuits with different YPF ratio(10%–50%)were conducted to explore the optimal addition *** effects of YPF on the rheological and baking performance of biscuits were *** results showed that the substitution ratio of YPF and milling methods had a critical impact on the rheological properties of *** dough stability decreased graduallywhile a softening degree increased with YPF ratio *** a term of biscuits,the dimensions of length(L),width(W),thickness(T)and color(L*)of biscuits reduced as YPF addition ratio increased,while colors(a*and b*)and hardness apparently *** addition,milling methods had a great influence on the texture and sensory evaluation of four *** dimensions and color parameters of biscuits from fine flours were larger than that from coarse flours,whereas hardness from fine flours was relatively softer,indicating flour with fine particle size could accelerate the extension and expansion of dough network,and improve Maillard reaction during *** highest sensory score for short and tough biscuits was obtained given at YPF ratio of 30%without compromising the qualities of biscuits.

关键词： Yellow pea flour Rheological properties Biscuits Sensory evaluation

Effect of dapagliflozin on uric acid in patients with chronic heart failure and hyperuricemia

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World Journal of Clinical Cases 2024年第18期12卷 3468-3475页

作者： Meng-Jiao Lin Shu-Bin Zou bai-xiang Zhu Three departments of cardiovascular medicine Harbin 242 HospitalHarbin 150066Heilongjiang ProvinceChina

BACKGROUND Patients with chronic heart failure(CHF)frequently develop hyperuricemia,an elevated serum uric acid level,associated with adverse ***,a sodium-glucose cotransporter-2 inhibitor,demonstrates reduction in cardiovascular mortality and hospitalization in patients with CHF and ejection fraction(HFrEF),irrespective of ***,dapagliflozin’s effect on the uric acid levels in patients with CHF and hyperuricemia remain *** To investigate the effects of dapagliflozin on uric acid levels in CHF patients with *** We conducted a randomized,double-blind,placebo-controlled trial in 200 patients with CHF and hyperuricemia,with HFrEF and serum uric acid levels≥7 mg/dL(≥416μmol/L).The participants were randomly assigned to receive a daily dose of 10 mg dapagliflozin or placebo for 24 *** primary endpoint was the change in serum uric acid level from baseline to 24 *** endpoints included changes in left ventricular ejection fraction(LVEF),Nterminal pro-B-type natriuretic peptide(NT-proBNP),and quality of life(QoL)scores,as well as the incidence of cardiovascular death and hospitalization for heart *** At 24 months,dapagliflozin significantly reduced serum uric acid levels by 1.2 mg/dL(71μmol/L)compared with placebo(95%CI:-1.5 to-0.9;P<0.001).Dapagliflozin also significantly improved LVEF by 3.5%(95%CI:2.1-4.9;P<0.001),NT-proBNP by 25%(95%CI:18-32;P<0.001),and QoL scores by 10 points(95%CI:7-13;P<0.001)and reduced the risk of cardiovascular death and hospitalization for heart failure by 35%(95%CI:15–50;P=0.002)compared with the *** events were similar between the two groups,except for a higher rate of genital infections in the dapagliflozin group(10%vs 2%,P=0.01).CONCLUSION Dapagliflozin significantly lowered serum uric acid levels and improved the clinical outcomes in patients with CHF and ***,dapagliflozin may be a useful therapeutic option for this high-r

关键词： Dapagliflozin Hyperuricemia Chronic heart failure Sodium-glucose cotransporter-2 inhibitor Uric acid levels Cardiovascular mortality

Living the Dream First Chinese Woman to Cross Arctic Ocean Still Navigating Brilliant Maritime Career

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Women of China 2019年第9期 10-13页

作者： ZHANG JIAMIN bai xiang′EN 不详

She grew up on a bank of the Huangpu River,which runs through the seaside city of Shanghai,in *** she was a child,she has been full of curiosity,and she has yearned to ***,she is a first mate with a doctoral degree in maritime *** is also associate professor with Shanghai Maritime *** name is bai xiang’en,and she is China’s first woman to sail across the Arctic Ocean.

关键词：驾驶员北冰洋航海中国首位上海海事大学黄浦江副教授

钙钛矿(C_6H_5CH_2NH_3)_2PbBr_4拉曼光谱研究

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光谱学与光谱分析 2018年第6期38卷 1763-1765页

作者：彭恒刘帅陈相柏武汉工程大学理学院光学信息技术实验室湖北武汉430205

运用激光拉曼光谱实验和密度泛函理论计算研究了450~1 700cm^(-1)光谱范围内有机-无机杂化钙钛矿材料(C_6H_5CH_2NH_3)_2PbBr_4的振动模式特性。对比实验所得拉曼光谱和理论计算所得拉曼光谱,发现密度泛函理论计算可以很好的模拟(C_6H_5... 详细信息

运用激光拉曼光谱实验和密度泛函理论计算研究了450~1 700cm^(-1)光谱范围内有机-无机杂化钙钛矿材料(C_6H_5CH_2NH_3)_2PbBr_4的振动模式特性。对比实验所得拉曼光谱和理论计算所得拉曼光谱,发现密度泛函理论计算可以很好的模拟(C_6H_5CH_2NH_3)_2PbBr_4有机部分的分子振动模式。同时通过比较分析密度泛函理论计算和参考文献,对450~1 700cm^(-1)光谱范围内的拉曼峰的分子振动模式进行了初步的归属,并发现该光谱范围内的拉曼峰主要是由(C_6H_5CH_2NH_3)_2PbBr_4分子中有机部分振动所产生的。

关键词：密度泛函理论钙钛矿(C6H5CH2NH3)2PbBr4 拉曼光谱