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Dissolution behavior of Al_(2)O_(3)inclusions into CaO-MgO-SiO_(2)-Al_(2)O_(3)-TiO_(2)system ladle slags

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 977-987页

作者： Zhiyin Deng xiaomeng zhang Guangyu Hao Chunxin Wei Miaoyong Zhu Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China TBEA Shenyang Transformer Group Co. Ltd.Shenyang 110141China Angang Steel Co. Ltd.Anshan 114021China

To investigate the dissolution behaviors of Al_(2)O_(3)inclusions in CaO-5wt%MgO-SiO_(2)-30wt%Al_(2)O_(3)-TiO_(2)system ladle slags,confocal scanning laser microscopy was conducted on the slags with different TiO_(2)contents(0-10wt%),and scanning electron microscopy was performed to study the interfacial reaction between Al_(2)O_(3)and this slag *** results disclose that the dissolution of Al_(2)O_(3)inclusions does not result in the formation of new phases at the boundary between the slag and the *** TiO_(2)-bearing and TiO_(2)-free ladle slags,there is no difference in the dissolution mechanism of Al_(2)O_(3)inclusions at steelmaking *** layer diffusion is found as the controlling step of the dissolution of Al_(2)O_(3),and the diffusion coefficient is in the range of 4.18×10^(-10)to 2.18×10^(-9)m^(2)/s at 1450-1500℃.Compared with the solubility of Al_(2)O_(3)in the slags,slag viscosity and temperature play a more profound role in the dissolution of Al_(2)O_(3)inclusions.A lower viscosity and a lower melting point of the slags are beneficial for the *** addition of TiO_(2)(e.g.,5wt%)in ladle slags can enhance the dissolution of Al_(2)O_(3)inclusions because of the low viscosity and melting point of the slags,while excessive addition of TiO_(2)(e.g.,10wt%)shows the opposite trend.

关键词： inclusions dissolution ladle refining slag titanium dioxide confocal scanning laser microscopy

Team behavioral integration links team interdependence with team performance: an empirical investigation in R&D teams

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Frontiers of Business Research in China 2019年第2期13卷 193-211页

作者： xiaomeng zhang Kwong Kwan Cheung Kong Graduate School of Business Beijing China School of Economics and Management Tongji University 1239 Siping Road Shanghai 200092 China

Drawi ng on the input-mediator (a blend of team process and emerge nt state)- output (IMO) framework, we develop a conceptual model in which team behavioral integration is conceived of as a team-level mediator that links team interdependence (input) with team performance (output). Using a three-wave research design, we test the hypothesized model with the data of 102 R&D teams from three information technology compa nies in China. Results indicate that team in terdependence positively influences team behavioral integration, and that team behavioral integration positively affects team performance. In addition, team behavioral integration is found to mediate the relationship between team interdependence and team performance. The theoretical and man agerial implicatio ns of these results are discussed.

关键词： Team interdependenee Team behavioral integration Team performance Top management teams Input-mediator-outcome framework R&D teams

Investigation of the active ingredients and mechanism of Shuangling extract in dextran sulfate sodium salt induced ulcerative colitis mice based on network pharmacology and experimental verification

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Journal of Traditional Chinese Medicine 2024年第3期44卷 478-488页

作者： CHU Mengzhen WANG Yu LIN Zhijian Lyu Jintao zhang xiaomeng zhang Bing Department of Clinical Chinese Pharmacy School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing 102488China

OBJECTIVE: To explore the pharmacodynamic effects and potential mechanisms of Shuangling extract against ulcerative colitis(UC). METHODS: The bioinformatics method was used to predict the active ingredients and action targets of Shuangling extract against UC in mice. And the biological experiments such as serum biochemical indexes and histopathological staining were used to verify the pharmacological effect and mechanism of Shuangling extract against UC in mice. RESULTS: The Shuangling extract reduced the levels of seruminterleukin-1β(IL-1β), tumor necrosis factor-α(TNF-N), interleukin-6(IL-6) and other inflammatory factors in UC mice and inhibited the inflammatory response. AKT Serine/threonine Kinase 1 and IL-6 may be the main targets of the anti-UC action of Shuangling extract, and the TNF signaling pathway, Forkhead box O signaling pathway and T-cell receptor signaling pathway may be the main signaling pathways. CONCLUSION: The Shuangling extract could inhibit the inflammatory response induced by UC and regulate intestinal immune function through multiple targets and multiple channels, which provided a new option and theoretical basis for anti-UC.

关键词： colitis ulcerative pharmacodynamic study network pharmacology molecular docking simulation Shuangling extract

Injections of ginkgo in the treatment of cerebral infarction: a systematic review and network Meta-analysis

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Journal of Traditional Chinese Medicine 2018年第1期38卷 1-11页

作者： Tan Di Wu Jiarui Liu Shi zhang Dan Cui Yingying zhang xiaomeng zhang Bing Department of Clinical Pharmacology of Traditional Chinese Medicine School of Chinese Materia Medica Beijing University of Chinese Medicine

OBJECTIVE： To assess the clinical effectiveness and safety of injections of ginkgo （GI） combined with Western Medicine （WM） for cerebral infarction （C/）. METHODS; Randomized controlled trials （RCTs） of C/treated by GI were searched in China National Knowledge Infrastructure Database, Wanfang, China Science and Technology Journal Database, Web of Science, Cochrane library, Embase, PubMed and Chinese Biomedical Literature Database, with the publication data no later than April, 2016. The Co- chrane risk of bias method was used to evaluate the methodological quality of the RCTs. The data were analyzed by Review Manager 5.3, Stata 13.0, and WinBUGS 14 ***： Totally 37 RCTs involving 4330 patients were included. By direct comparison, the results of GI group were significantly superior to the routine WM group in the total effective rates [OR = 3.61, 95% CI （2.93, 4.44）, P 〈 0.0001], the neural function defect score （NFDS） [MD = - 4.39, 95% CI （- 5.47, - 3.32）, P 〈 0.0001]. Network Meta-analysis （NMA） results showed that, between S GIs in efficacy, the difference comparing ginaton injections （GbE） to ginkgo-dipyidamolum injections （GD） [OR = 1.74, 95% CI （0.73, 3.65）], shuxuening injections （SXN） [OR = 1.06, 95% CI （0.609, 1.697）] or ginkgolides in- jections （GK） [OR = 4.711, 95% CI （1.178, 13.21）] reach statistical significance; the difference compar- ing GD to GK reach statistical significance [OR = 2.791, 95% CI （0.866, 6.908）]; the difference com- paring SXN to GK reach statistical significance [OR = 4.537, 95% CI （1.203, 12.41）]. Besides, there was no difference between 4 GIs in NFDS. Proba- bility ranking result showed a great possibility for GK [Surface under the Cumulative Ranking curve （SUCRA） = 80.3%] in improving the total effective rates, which were followed by GD （SUCRA = 73.34%）, SXN （SUCRA = 46.59%）, GbE （SUCRA = 45.46%）, floium ginkgo extract and tertram ethy- pyrazine sodium chloride injections （FT）（SU- CRA = 35.64%）. However, GK （SUCRA = 80.3

关键词： tnjections Ginkgo biloba Cerebral in-farction Network Meta-analysis Review

Kinetics mechanism of microwave sintering in ceramic materials

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Science China(Technological Sciences) 2009年第9期52卷 2727-2731页

作者： HAO HongShun XU LiHua HUANG Yong zhang xiaomeng XIE ZhiPeng Department of Inorganic Non-metallic Materials University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

Based on the traditional sintering model incorporating the characteristic of microwave sintering, the ionic conductance diffusion mechanism in microwave sintering was studied. A flat-ball model was presented to describe the kinetics process in microwave sintering, and was applied to the sintering process of TZP and ZrO2-Al2O3 ceramics. The results indicate that the shrinkage rate of materials in microwave sintering is proportional to t2/3 and r-4/3, respectively, where t is the sintering time and r is the particle radius. Whereas, the shrinkage rate of materials in conventional sintering is proportional to sintering time t2/5. Our model suggests that microwave sintering is faster than conventional sintering, which shows a good agreement with the experimental observation in sintering process of TZP and ZrO2-Al2O3.

关键词： microwave sintering ionic conductance kinetics sintering mechanism

Financial Burden of Tuberculosis Patients—China,2020

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China CDC weekly 2023年第12期5卷 266-270页

作者： Caihong Xu Yinyin Xia Dongmei Hu xiaomeng zhang Yanlin Zhao National Center for Tuberculosis Control and Prevention Chinese Centre for Disease Control and PreventionBeijingChina Tianjin Center for Tuberculosis Control TianjinChina

Summary What is already known about this topic?Tuberculosis(TB)is often referred to as“a disease of poverty,”yet the information regarding the financial burden of TB care is limited and regionally *** is added by this report?This manuscript reported the national representative total and breakdown costs associated with TB care in *** total cost per patient was 1,185 USD,of which 88%was direct cost and 37%was incurred prior to TB treatment.

关键词： Tuberculosis Patients cost

Population Genetic Analysis of Sillago nigrofasciata (Perciformes:Sillaginidae) Along the Coast of China by Sequencing Mitochondrial DNA Control Region

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Journal of Ocean University of China 2020年第3期19卷 707-716页

作者： zhang xiaomeng GAO Tianxiang YE Yingying SONG Na YU Zhengsen LIU Yong Fisheries College Ocean University of ChinaQingdao 266003China Fisheries College Zhejiang Ocean UniversityZhoushan 316022China National Engineering Research Center for Marine Aquaculture Zhejiang Ocean UniversityZhoushan 316022China East China Sea Fisheries Research Institute Chinese Academy of Fishery SciencesShanghai 200090China

Sillago nigrofasciata, a small to moderate size nearshore species, is newly found along the eastern and southern coasts of China. The present study is carried out in order to analyze the population genetics of the S. nigrofasciata. The control region sequence of mitochondrial DNA revealing 73 haplotypes were obtained from 162 individuals collected at 8 locations along the coast of China. The whole S. nigrofasciata population along the coast of China showed a low nucleotide diversity(0.012) and a high population diversity(haplotype diversity)(0.943), and all the 8 local populations showed low nucleotide diversities(0.014 – 0.001), suggesting the protective measures are effective. The haplotypes of the 8 local populations were widely distributed in haplotype network diagram and neighbor-joining phylogenetic tree, while no branch associating with sampling locations was detected. Recent gene flow analysis showed asymmetric gene exchanges among local populations. The pairwise FST values and unweighted pair-group method with arithmetic mean(UPGMA) tree revealed a certain amount of genetic difference among local populations. Moreover, analysis of molecular variance(AMOVA) reflected genetic differences between hypothetical subdivision groups. Neutral test and mismatch distribution of pairwise nucleotide suggested S. nigrofasciata may have experienced recent population expansion events. The historical geographic events associating with ice age may be the main explanation to the heterogeneity among local populations with short geographic distances, and the homogeneity among local populations with long geographic distances.

关键词： Sillago nigrofasciata Sillago sp. population genetics mitochondrial DNA control region coast of China

Enabling monodisperse perovskite phase with buried interface modification toward efficient light-emitting diodes

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Nano Research Energy 2023年第3期2卷 38-47页

作者： Maowei Jiang xiaomeng zhang Feijiu Wang Key Laboratory for Special Functional Materials(Ministry of Education of China) National&Local Joint Engineering Research Centre for High-efficiency Display and Lighting TechnologySchool of Materials ScienceHenan UniversityKaifeng 475004China Henan Key Laboratory of Photovoltaic Materials Henan UniversityKaifeng 475004China

The performance of perovskite light-emitting diodes(PeLEDs)has been drastically improved ***,the coexistence of polydisperse perovskite domains has been one worthy subject of *** crystallization of perovskite is affected by the buried interface character with the bottom contact layer;and the trap states also inherently exist at the buried interface of the perovskite film,which induce the nonradiative recombination and impede the PeLED *** this work,we focus on the crystallization modulation of monodisperse perovskite nanodomains toward high-performance *** show that a LiBr pre-modification layer on the bottom substrate induces the formation of monodisperse perovskite *** this system,the carrier transferring process deriving from the polydisperse phases is *** addition,the LiBr pre-modification layer at the buried interface minimizes the trap states and enhances the radiative recombination of ***,our PeLEDs show a champion external quantum efficiency(EQE)of 25.5%for 4 mm2 device,and 22.9%for 100 mm^(2)device.

关键词： perovskite light-emitting diode monodisperse phase defect passivation buried interface large area device

Removal of cyanide adsorbed on pyrite by H_2O_2 oxidation under alkaline conditions

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Journal of Environmental Sciences 2019年第4期31卷 287-292页

作者： Yubo Tu Peiwei Han Lianqi Wei xiaomeng zhang Bo Yu Peng Qian Shufeng Ye State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of Sciences University of Chinese Academy of Sciences

Large amounts of cyanide tailings are produced during the cyanidation process in gold extraction,which are hazardous solid wastes due to the toxic *** is one of the main minerals in cyanide *** removal of cyanide adsorbed on pyrite by H_2O_2 oxidation under alkaline conditions was investigated in this *** was found that the removal efficiency was positively correlated with pH from 5 to 12,but remained almost constant when pH was higher than *** highest cyanide removal efficiency of 91.10% was achieved by adding no less than 0.6 wt.% of H_2O_*** removal was positively correlated with the CN^-adsorption amount between 1.06 and 8.5 mg/g,and temperature between 25 and 85°*** removal of cyanide adsorbed on pyrite by H_2O_2 oxidation under alkaline conditions was due to the oxidation of ***,thiocyanate and sulfate were generated with mole ratios of about 2.03:1.12:3.17 during the cyanide removal.?2018 The Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences.

关键词： Cyanide removal Pyrite H2O2 oxidation Alkaline conditions