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Treatment for COVID-19 patients in Vietnam: Analysis of time-to-recovery

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Asian Pacific Journal of Tropical Medicine 2020年第9期13卷 397-401页

作者： Khuong Quynh Long Hoang hong hanh Tran Thi Tuyet hanh La Ngoc Quang Hoang Van Minh Hanoi University of Public Health 1A Duc Thang RoadDuc Thang WardNorth Tu Liem DistrictHanoiVietnam

Objective:To describe the recovery time and related factors among COVID-19 patients in ***:We used the secondary data obtained from the official database of the Ministry of Health of Vietnam and other public data sources that were available by April 9 th,*** proportional hazards model was carried out to identify factors related to recovery time among COVID-19 ***:By April 9 th,2020,the cumulative number of COVID-19 cases detected in Vietnam was 255,of which 129(50.6%)patients had fully *** median recovery time of patients was 17(95%CI=16-19)*** patients had a lower likelihood of recovery(HR=0.98,95%CI=0.97-0.99,Plevel.

关键词： COVID-19 Coronavirus Recovery Vietnam

Preparation of mulberry-like RuO_(2) electrode material for supercapacitors

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Rare Metals 2021年第2期40卷 440-447页

作者： Feng Yu le Pang hong-Xia Wang School of Chemistry and Physics Science and Engineering FacultyQueensland University of TechnologyBrisbaneQLD4001Australia School of Chemistry and Materials Science Institute of Advanced Materials and Flexible Electronics(IAMFE)Nanjing University of Information Science and TechnologyNanjing210044China

As a newly emerging excellent energy storage device,supercapacitors have been widely studied due to their unique *** material is one of the key components that determine the performance of a *** the various electrode materials of supercapacitors,RuO_(2) has attracted great attention in the scientific community due to its high theoretical energy storage capability and excellent ***,most RuO_(2) materials suffer the problem of low specific surface area,causing a much lower actual capacitance value compared to the theoretical performance of the *** this work,a mulberry-like RuO_(2) electrode material with large specific surface area(159.4 m^(2)·g^(-1))was successfully synthesized by a facial hydrothermal *** electrochemical characterization has shown that the RuO_(2) possesses a high specific capacitance of 400 F·g^(-1) at a current density of 0.2 A·g^(-1) and good capacitance retention rate of 84.7%after 6000 charge/discharge cycles under a current density of 10 A·g^(-1).The energy densities and power densities of the RuO_(2)-AC supercapacitor vary from25.0 to 11.7 Wh·kg^(-1) and 160 to 10,560 W·kg^(-1) at current density ranging from 0.2 to 10.0 A·g^(-1),respectively.

关键词： Mulberry-like RuO_(2) Transition metal oxide Supercapacitors

The A/ENTH Domain-Containing Protein AtECA4 Is an Adaptor Protein Involved in Cargo Recycling from the trans-Golgi Network/Early Endosome to the Plasma Membrane

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Molecular Plant 2018年第4期11卷 568-583页

作者： hong hanh Nguyen Myoung Hui lee Kyungyoung Song Gyeongik Ahn Jihyeong lee Inhwan Hwang Division of Integrative Biosciences and Biotechnology Pohang University of Science and Technology Pohang 790-784 Korea Department of Life Sciences Pohang University of Science and Technology Pohang 790-784 Korea

Endocytosis and subsequent trafficking pathways are crucial for regulating the activity of plasma membrane-localized proteins. Depending on cellular and physiological conditions, the internalized cargoes are sorted at （and transported from） the trans-Golgi network/early endosome （TGN/EE） to the vacuole for degradation or recycled back to the plasma membrane. How this occurs at the molecular level remains largely elusive. Here, we provide evidence that the ENTH domain-containing protein AtECA4 plays a crucial role in recycling cargoes from the TGN/EE to the plasma membrane in Arabidopsis thaliana. AtECA4：sGFP primarily localized to the TGN/EE and plasma membrane （at low levels）. Upon NaCI or mannitol treatment, AtECA4：sGFP accumulated at the TGN/EE at an early time point but was released from the TGN/EE to the cytosol at later time points. The ateca4mutant showed higher resistance to osmotic stress and more sensitive to exogenous abscisic acid （ABA） than the wild type, as well as increased expres- sion of ABA-inducible genes RD29A and RD29B. Consistently, ABCG25, a plasma membrane-localized ABA exporter, accumulated at the prevacuolar compartment in ateca4, indicating a defect in recycling to the plasma membrane. However, the role of AtECA4 in cargo recycling is not specific to ABCG25, as it also functions in the recycling of BRII. These results suggest that AtECA4 plays a crucial role in the recycling of endocytosed cargoes from the TGN/EE to the plasma membrane.

关键词： abiotic stress A/ENTH cargo recycling

A Non-symmetric Digital Image Secure Communication Scheme Based on Generalized Chaos Synchronization System

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Communications in Theoretical Physics 2005年第6X期44卷 1115-1124页

作者： ZHANG Xiao-hong MIN le-Quan Applied Science School and Information Engineering School 100083 China Information Engineering School Jiangxi University of Science University of Science and Technology Beijing Beijing and Technology Ganzhou 341000 China

Based on a generalized chaos synchronization system and a discrete Sinai map, a non-symmetric true color （RGB） digital image secure communication scheme is proposed. The scheme first changes an ordinary RGB digital image with 8 bits into unrecognizable disorder codes and then transforms the disorder codes into an RGB digital image with 16 bits for transmitting. A receiver uses a non-symmetric key to verify the authentication of the received data origin, and decrypts the ciphertext. The scheme can encrypt and decz：Fpt most formatted digital RGB images recognized by computers, and recover the plaintext almost without any errors. The scheme is suitable to be applied in network image communications. The analysis of the key space, sensitivity of key parameters, and correlation of encrypted images imply that this scheme has sound security.

关键词： generalized chaos synchronization Sinai map image confusion non-symmetric key data origin authentication network communication

Illuminating Recommendation by Understanding the Explicit Item Relations

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Journal of Computer Science & Technology 2018年第4期33卷 739-755页

作者： Qi Liu hong-Ke Zhao le Wu Zhi Li En-hong Chen Anhui Province Key Laboratory of Big Data Analysis and Application University of Science and Technology of China Hefei 230027 China School of Computer and Information Hefei University of Technology Hefei 230009 China School of Software Engineering University of Science and Technology of China Hefei 230051 China

Recent years have witnessed the prevalence of recommender systems in various fields, which provide a personalized recommendation list for each user based on various kinds of information. For quite a long time, most researchers have been pursing recommendation performances with predefined metrics, e.g., accuracy. However, in real-world applications, users select items from a huge item list by considering their internal personalized demand and external constraints. Thus, we argue that explicitly modeling the complex relations among items under domain-specific applications is an indispensable part for enhancing the recommendations. Actually, in this area, researchers have done some work to understand the item relations gradually from ＂implicit＂ to ＂explicit＂ views when recommending. To this end, in this paper, we conduct a survey of these recent advances on recommender systems from the perspective of the explicit item relation understanding. We organize these relevant studies from three types of item relations, i.e., combination-effect relations, sequence-dependence relations, and external-constraint relations. Specifically, the combination-effect relation and the sequence-dependence relation based work models the intra-group intrinsic relations of items from the user demand perspective, and the external-constraint relation emphasizes the external requirements for items. After that, we also propose our opinions on the open issues along the line of understanding item relations and suggest some future research directions in recommendation area.

关键词： recommender system item relation recommendation interpretability

Immobilization of antimony in soil and groundwater using ferro-magnesium bimetallic organic frameworks

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Journal of Environmental Sciences 2023年第3期125卷 194-204页

作者： le Yuan JianleWang Zuqi Zhong Jiguang Li hong Deng School of Environment and Energy Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Resource RecyclingSouth China University of TechnologyGuangzhou 510006China Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation Beibu Gulf UniversityQinzhou 535000China Guangdong Engineering and Technology Research Center for Environmental Nanomaterials South China University of TechnologyGuangzhou 510006China

Sb(Ⅲ) is often detected in contaminated soil and groundwater. Hence, high-efficiency technology is needed. In this study, bimetallic organic frameworks were used for the first time to immobilize Sb(Ⅲ) from contaminated soil and groundwater. The materials were synthesized by the hydrothermal method. Both ends of the prepared material were hexagonal tip rods,and the length became shorter as the ratio of Fe/Mg decreased. The bimetallic organic framework with a Fe/Mg feeding ratio of 0.5 was the optimum material for Sb(Ⅲ) removal, which could effectively immobilize Sb(Ⅲ). The adsorption isotherm was fitted well with the Freundlich model, and the optimal adsorption capacity can reach 106.97 mg/g. The adsorption capacity of 84% can be completed in 10 min, which conformed to the pseudo-second-order kinetics. The Fe^(3+)could enhance the stability of the material, and the Mg^(2+)was conducive to freeing up adsorption sites for binding Sb(Ⅲ) and forming stable chemical adsorption. Ion exchange is the predominant mechanism to remove Sb(Ⅲ). After 14 days of remediation of Sb(Ⅲ) contaminated soil, the Toxicity Characteristic leaching Procedure(TCLP)-leached concentrations of Sb(Ⅲ) were reduced by 86%, 91% and 94% when the material dosages were1%, 2% and 3%, respectively. Immobilization of Sb(Ⅲ) in soil resulted in a conversion of antimony speciation from more easily bioavailable species to less bioavailable species, further contributing to reduce the environmental risk of antimony. The results indicate that ferromagnesium bimetallic organic frameworks may serve as a kind of promising materials for the immobilization of Sb(Ⅲ) in contaminated soil and groundwater.

关键词： Antimony Ferro-magnesium bimetallic organic frameworks(MOFs) Soil Groundwater

Irbesartan drug formulated as nanocomposite particles for the enhancement of the dissolution rate

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Particuology 2012年第4期10卷 462-467页

作者： Zhiliang Zhang Yuan le Jiexin wang hong Zhao Jianfeng Chen State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029.China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China

Irbesartan （IBS）, an angiotensin II receptor antagonist, is a poorly water-soluble drug. To enhance the dis- solution rate, IBS nanocomposite particles were produced via an anti-solvent precipitation combined with a spray drying process. Four pharmaceutically acceptable excipients, including three different polymers and one charged surfactant, were evaluated as stabilizers to control the particle size and to prevent the agglomeration of particles. The experiment results indicated that polyvinylpyrrolidone （PVP） combined with sodium dodecyl sulfate （SDS） significantly decreased the particle size and enhanced the stability of drug nanoparticles. As a result, we finally obtained stable IBS nanoparticles with an average size of approx- imately 55 nm. In the dissolution test, the IBS nanocomposite particles showed a significantly enhanced dissolution rate and 100% of the drug dissolved within 20 rain. In contrast, the physical mixture with the same recipe as the IBS nanocomposite particles and the raw 1BS reached only 8% and 40% of drug dissolved in 20 rain, respectively, and both of them did not dissolve completely, even after 120 rain.

关键词： lrbesartanComposite particlesStabilizerDissolution rate

Real-time and visible monitoring of stress distribution using organic mechanoresponsive luminogen

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Science China(Technological Sciences) 2021年第12期64卷 2586-2594页

作者： ZHANG le ZHANG Zhe LIN hong CHEN Gang CHEN Xu School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology Tianjin 300350China

A real-time and visible stress monitoring method based on a pure organic mechanoresponsive luminogen(MRL)was proposed in this work.1,1,2,2-tetrakis(4-nitrophenyl)ethene(TPE-4 N)could produce ultrasensitive and visible mechanoresponsive *** specimens were coated with a uniform TPE-4 N film,wherein mechanical deformation was transformed into visible *** tests were conducted to determine the calibration relationship between the stress value and fluorescence *** accuracy of stress measured using the organic MRL method was investigated on single-edge notched tension *** show that the stress distribution obtained using the proposed method agrees well with that calculated using ANSYS *** organic MRL method may open up new opportunities for large-scale,full-field,on-site monitoring of stress distribution in complicated structural components.

关键词： stress measurement real-time monitoring organic mechanoluminescence

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Anti-inflammatory effects of fatty acids isolated from Chromolaena odorata

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Asian Pacific Journal of Tropical Medicine 2011年第10期4卷 760-763页

作者： Tran Thi hong hanh Dan Thi Thuy Hang Chau Van Minh Nguyen Tien Dat Institute of Marine Biochemistry Vietnam Academy of Science and Technology(VAST)

Objective:To identify inhibitors of nitric oxide production and NF-κB activity from Chromolaena odorata（***）.Methods:The compounds isolated from the aerial parts of *** by bioassay-guided fractionation were investigated for their inhibitory effects on the NO production and NF-κB activity in LPS-stimulated RAW264.7 ***:Six fatty acids （S）-coriolic acid（1）,（S）-coriolic acid methyl ester（2）,（5）-15,16-didehydrocoriolic acid（3）,（S）- 15,16-didehydrocoriolic acid methyl ester（4）,linoleamide（5） and linolenamide（6） were isolated. All compounds inhibited the NO production at concentrations consistent with those required for NF-κB *** 2 was the most active with the IC50 values of 5.22 and 5.73μM. The addition of a double bond in the fatty chain decreased the inhibitory effects while the methyl esterification increased the ***:The fatty acid components in *** with NF-κB inhibitory activity could explain the anti-inflammation property of this plant in traditional *** study could also contribute to the better use of *** for human health care.

关键词： Chromolaena odorata Asteraceae Fatty acid NF-κB Nitric oxide