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Journal of Forestry Research 2016年第4期27卷 949-958页

作者： lang huang Haigang Wang Weihong Wang Qingwen Wang Yongming Song Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education) Northeast Forestry University

The influence of aryl amide compounds（TMB）as b-nucleating agents, on the non-isothermal crystallization of a wood-flour/polypropylene composite（WF/PP）prepared by compression molding was investigated by wide-angle X-ray diffraction and differential scanning calorimetry. TMB was proved to be an effective b-crystalline nucleating agent for WF/PP. The DSC data showed that the crystallization peak temperature（Tp） increased and the half-time（t1/2） decreased with the addition of *** theoretical models were used to analyze the nonisothermal crystallization process. The modified Avrami method and Mo method successfully explained the nonisothermal crystallization behavior of PP and its composites. Their activation energies for non-isothermal crystallization were determined basing on the Kissinger method.

关键词： isothermal kinetics crystalline polypropylene calorimetry nucleation flour molding crystallinity amide

Compact splitting symplectic scheme for the fourth-order dispersive Schrodinger equation with Cubic-Quintic nonlinear term

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第2期10卷 142-155页

作者： lang-Yang huang Zhi-Feng Weng Chao-Ying Lin Fujian Province University Key Laboratory of Computational Science School of Mathematical SciencesHuaqiao University Quanzhou 362021P.R.China Key Laboratory of Applied Mathematics(Putian University) Fujian Province University Fujian Putian 351100P.R.China

Combining symplectic algorithm,splitting technique and compact method,a compact splitting symplectic scheme is proposed to solve the fourth-order dispersive Schr¨odinger equation with cubic-quintic nonlinear *** scheme has fourth-order accuracy in space and second-order accuracy in *** discrete charge conservation law and stability of the scheme are *** examples are given to confirm the theoretical results.

关键词： Symplectic scheme Schr¨odinger equation compact splitting method conservation law

Chitosan-based carbon dots with multi-color-emissive tunable fluorescence and visible light catalytic enhancement properties

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Nano Research 2023年第2期16卷 1835-1845页

作者： Qiong Wu Shouyun Zhang Shuang Li Yan Yan Shitao Yu Ruiyang Zhao lang huang State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China

Carbon quantum dots(CQDs)are receiving increasing attention for their excellent photostability,low toxicity,and tunable fluorescence performance,but it is still challenging to prepare full-spectrum CQDs using only one single set of precursor and *** this study,P and N co-doped carbon dots(N,PR-CQDs)with multi-color-emissive tunable fluorescence from blue to green and orange were synthesized from bio-based chitosan,employing phosphoric acid as solvent and *** introduction of phosphoric acid successfully shortens the manufacturing reaction time,and the heteratomic functional groups of P–O/P=O on surface of carbon dots enrich the surface defect states,promoting n–π*transition,and therefore changing their electron structure/energy level to reduce the band gap,thus facilitating emission at long ***,increasing phosphoric acid concentration leads to characteristic excitation peaks red shift from 320 to 420 nm with the characteristic emission peaks red shift from 406 to 503 nm.A new emission peak at 610 nm appears,enabling N,PR-CQDs exhibit double emission peaks with fluorescence color from green to yellow to *** compositing with carbon nitride(g-C3N4),N,PR-CQDs work as photosensitizer and effectively narrow the energy gap(Eg)of g-C3N4 from 2.75 to 2.40 eV,endowing the photocatalyst higher visible light capture ability and broader light response *** photocatalytic degradation rate of rhodamine B(RhB)under visible light irradiation reaches up to 98.39%within 60 min using N,P20%-CQDs/g-C3N4 as catalyst,which is 1.4 times that of pure g-C3N4,and it is demonstrated that·O2−is the major active substance contributing for RhB degradation by de-ethyl and aromatic ring breakage.

关键词： carbon dots multicolor luminescence chitosan visible light catalysis photosensitizer

Giant Vortex States in a Long Superconducting Cylinder with a Hole in Center

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Communications in Theoretical Physics 2007年第4期47卷 728-732页

作者： ZHAO Hu RAO Ze-lang CHEN Jin huang Fu YANG Shi-Jie Department of Physics Beijing Normal University Beijing 100875 China

We have theoretically studied the nucleation of superconductivity in doubly connected superconductors in the form of long superconducting cylinders. The giant vortex states are investigated with the nonlinear Ginzburg-Landau theory. The solutions of Ginzburg-Landau equations are solved numerically with relaxation method. The quantum size effect is clearly shown through the calculation of free energy.

关键词： giant vortex states Ginzburg-Landau equations size effect

Formation and Replacement Mechanism of the Concentric Eyewall of Super Typhoon Muifa(1109)

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Journal of Tropical Meteorology 2022年第4期28卷 425-444页

作者： huang lang WEN Ying-fang LIU Yu-di Institute of Meteorological and Oceanography National University of Defense TechnologyChangsha 410073 China Guangzhou Meteorological Bureau Guangzhou 511430 China

Based on high-fidelity numerical simulation by using the Weather Research and Forecast(WRF)model,we analyzed the formation and replacement mechanism of the concentric eyewall of Super Typhoon Muifa(1109)from the aspects of the potential vorticity(PV),dynamic/thermodynamic structure change,sea surface flux,and water vapor *** data and sensitivity tests were also adopted to verify the *** found that:(1)The abnormal increase of the PV in the rain zone is mainly due to the condensation latent *** water vapor conditions are beneficial to the formation of the outer eyewall structure,and when the environmental water vapor content is larger,the intensity of the outer eyewall becomes greater.(2)After the formation of the typhoon’s outer eyewall,in the area where the outer eyewall is located,the increase of inertial stability contributes to the decrease of the intensity of the inner *** the intensity of the outer eyewall is larger,the divergence and subsidence motion in the upper layer of the outer eyewall has a greater weakening effect on the intensity of the inner eyewall.(3)The increase of potential temperature of the outer eyewall is mainly due to the condensation latent heat release and the warming of dry air subsidence motion in the moat area.(4)The increase of sea surface heat flux can prolong the concentric eyewall replacement process.

关键词： potential vorticity(PV) sea surface flux moat condensation latent heat

Highly Oxygenated Dimeric Grayanane Diterpenoids as Analgesics:TRPV1 and TRPA1 Dual Antagonists from Rhododendron molle

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Chinese Journal of Chemistry 2022年第19期40卷 2285-2295页

作者： lang huang Guijuan Zheng Yuanyuan Feng Pengfei Jin Biao Gao Hanqi Zhang Xiaomin Ma Junfei Zhou Guangmin Yao Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of PharmacyTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei430030 China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan650201 China Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry College of Chemistry and Environmental ScienceKashi UniversityKashgarXinjiang844007 China

Six highly oxygenated dimeric grayanane diterpenoids(1—6)including three new ones,bismollethers A—C(1—3),were isolated from the flowers of Rhododendron molle collected at Qichun,Hubei,*** structures and relative configurations of 1—6 were determined by comprehensive spectroscopic data analysis and 13C NMR calculation with DP4+*** absolute configurations of bismollethers A—C(1—3)and birhodomollein B(5)were indubitably assigned by single-crystal X-ray diffraction analysis,revealing the head-to-tail linking manner of diterpenoid *** A(1)is a caged dimeric grayanane diterpenoid linked through two oxygen-bridges of C-2−O−C-14′and C-14−O−C-2′,featuring a unique 1,8-dioxacyclotetradecane *** plausible biosynthesis pathways of 1—6 are *** the isolates displayed significant analgesic activities and their structure-activity relationships were *** diterpenoid dimers were found to be TRPV1 and TRPA1 dual antagonists,and docking studies provide a structural basis to design potent analgesics.

关键词： Biological activity Dimeric grayanane diterpenoids Natural products Rhododendron molle(Ericaceae) Structure elucidation

An in-situ generated composite solid-state electrolyte towards high-voltage lithium metal batteries

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Science China Chemistry 2022年第5期65卷 934-942页

作者： Qinglei Wang Tiantian Dong Qian Zhou Zili Cui Xuehui Shangguan Chenglong Lu Zhaolin Lv Kai Chen lang huang Huanrui Zhang Guanglei Cui Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266100China School of Materials Science and Engineering Linyi UniversityLinyi 276000China School of Materials Science and Engineering Ocean University of ChinaQingdao 266042China

The solid-state electrolyte(SSE) has promising applications in next-generation lithium(Li) metal batteries(LMBs) because of its significantly enhanced safety and more compatible interface characteristics than flammable traditional liquid ***,only a few attempts have achieved high-performance high-voltage LMBs,which is attributed to the fact that both high ionic conductivity and good compatibility with electrodes can hardly be achieved ***,a composite solid-state electrolyte(CSE) based on star-shaped siloxane-based polymer electrolyte coupled with Li_(6.75)La_(3)Zr_(1.75)Ta_(0.25)O_(12)(LLZTO)ceramic fillers is designed and prepared through a facile in-situ polymerization *** obtained CSE exhibits high ionic conductivity(i.e.,1.68 × 10^(-4) S cm^(-1) at a temperature of 60 ℃),superior anodic stability,and high Li-ion transference number(i.e.,0.53) because of the multifunctional synergistic effect of the polymer electrolyte with LLZTO ceramic ***,the as-developed CSE shows excellent compatibility with Li *** a result,the as-developed CSE enables the development of long-life 4.4-V-class solid-state LMBs with a Li CoO_(2) cathode,with 79.7% capacity retention and 99.74% average Coulombic efficiency after 500 cycles at a 0.5 C *** analysis of cycled batteries confirms that such superior battery performance can be mainly ascribed to the formation of a compatible electrode/electrolyte ***,excellent safety features can be observed in LiCoO_(2)/Li pouch *** work provides an important guide for the rational design of SSEs for high-voltage LMBs.

关键词： composite solid-state electrolyte in-situ lithium metal batteries high-voltage

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Diagnosis and treatment of post-cholecystectomy diarrhoea

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World Journal of Gastrointestinal Surgery 2023年第11期15卷 2398-2405页

作者： Rang-lang huang Wen-Kai huang Xiang-Yi Xiao Lin-Feng Ma He-Zi-Rui Gu Guo-Ping Yang Department of Hepatobiliary and Pancreatic Surgery The Third Xiangya Hospital of The Central South UniversityChangsha 410013Hunan ProvinceChina Department of General Medicine The Third Xiangya Hospital of The Central South UniversityChangsha 410013Hunan ProvinceChina The Xiangya School of Medicine The Central South UniversityChangsha 410013Hunan ProvinceChina Department of Clinical Pharmacy The Third Hospital of The Central South UniversityChangsha 410013Hunan ProvinceChina

The incidence of cholecystitis is relatively high in developed countries and may usually be attributed to gallstones,the treatment for which involves complete surgical removal of the gallbladder(cholecystectomy).Bile acids produced following cholecystectomy continue to flow into the duodenum but are poorly absorbed by the *** bile acids in the colon stimulate mucosal secretion of water and electrolytes leading,in severe cases,to *** acid diarrhoea(BAD)is difficult to diagnose,requiring a comprehensive medical history and physical examination in combination with laboratory *** current work reviews the diagnosis and treatment of BAD following chole-cystectomy.

关键词： Cholecystitis Gallstones Bile acids Colon Bile acid diarrhoea

Synthesis of Large-Area, Few-Layer Graphene on Iron Foil by Chemical Vapor Deposition

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Nano Research 2011年第12期4卷 1208-1214页

作者： Yunzhou Xue Bin Wu Yunlong Guo Liping huang lang Jiang Jianyi Chen Dechao Geng Yunqi Liu Wenping Hu Gui Yu Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy ofSciences Beijing 100190 China

We demonstrate a simple and controllable way to synthesize large-area, few-layer graphene on iron substrates by an optimized chemical vapor deposition （CVD） method using a mixture of methane and hydrogen. Based on an analysis of the Fe-C phase diagram, a suitable procedure for the successful synthesis of graphene on Fe surfaces was designed. An appropriate temperature and cooling process were found to be very important in the synthesis of highly crystalline few-layer graphene. Graphene-based field-effect transistor （FET） devices were fabricated using the resulting few-layer graphene, and showed good quality with extracted mobilities of 300-1150 cm2/（V.s）.

关键词： Graphene iron foil chemical vapor deposition (CVD) method Raman spectroscopy field-effect transistor (FET)

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大数据视阈下的系统安全理论建模范式变革

系统工程理论与实践 2018年第7期38卷 1877-1887页

作者：黄浪吴超王秉中南大学资源与安全工程学院长沙410083 中南大学安全理论创新与促进研究中心长沙410083

为明晰大数据视阈下的系统安全理论建模范式变革,首先,分析数据和信息在系统安全研究中的双重性质演变.其次,构建包括数据维、系统维和安全维的系统安全理论建模范式转变框架,采用理论思辨法,分析大数据视阈下现有系统安全理论建模面临... 详细信息

为明晰大数据视阈下的系统安全理论建模范式变革,首先,分析数据和信息在系统安全研究中的双重性质演变.其次,构建包括数据维、系统维和安全维的系统安全理论建模范式转变框架,采用理论思辨法,分析大数据视阈下现有系统安全理论建模面临的挑战与机遇.最后,在分析建模技术路径、建模逻辑主线和建模原理的基础上,构建基于大数据的系统安全理论建模新范式,并进行实例分析.结果表明：数据和信息在系统安全中具有主体和客体双重性质;系统安全理论建模范式转变可分为3阶段：“经验-微系统-古典安全”、“小数据-中系统-近代安全”和“大数据-宏系统-大安全”范式;现有的“小数据型”、“解释型”等9类安全理论模型不能适应大数据时代的系统安全需求,大数据给系统安全理论建模带来的机遇包括面向全体数据、突出预测性等6方面;实例分析证明基于大数据的系统安全理论建模新范式具有可行性和科学性.

关键词：大数据安全理论模型系统安全安全数据安全信息