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Facile fabrication of highly flexible,porous PEDOT:PSS/SWCNTs films for thermoelectric applications

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Chinese Physics B 2022年第2期31卷 50-59页

作者： Fu-Wei Liu Fei Zhong Shi-Chao Wang Wen-He Xie Xue Chen Ya-ge hu Yu-Ying ge Yuan Gao Lei Wang Zi-Qi Liang College of Physics and Electronic Engineering Xinyang Normal UniversityXinyang 464000China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Department of Materials Science Fudan UniversityShanghai 200433China

High-performance organic composite thermoelectric(TE)materials are considered as a promising alternative for harvesting heat ***,composite films of poly(3,4-ethyienedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotubes(PEDOT:PSS/SWCNTs)were fabricated by utilizing a convenient solution mixing ***,the as-prepared hybrid films were treated using sulfuric acid(H_(2)SO_(4))to further optimize the TE *** morphological studies revealed that the sulfuric acid treated PEDOT:PSS/SWCNTs composite samples all possessed porous *** to the successful fabrication of highly conductive networks,the porous nano-architecture also exhibited much more excellent TE properties when compared with the dense structure of the pristine *** the post-treated sample,a high power factor of 156.43μW·m^(-1)·K^(-2)can be achieved by adjusting the content of CNTs,which is approximately 3 orders of magnitude higher than that of the corresponding untreated samples(0.23μW·m^(-1)·K^(-2)).Besides,the obtained films also showed excellent mechanical flexibility,owing to the porous nanostructure and the strong p–p interactions between the two *** work indicates that the H_(2)SO_(4) treatment could be a promising strategy for fabricating highly-flexible and porous PEDOT:PSS/SWCNTs films with high TE performances.

关键词： porous film thermoelectric properties flexibility

Enhanced interfacial charge transfer on Bi metal@defective Bi_(2)Sn_(2)O_(7) quantum dots towards improved full-spectrum photocatalysis:A combined experimental and theoretical investigation

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Chinese Chemical Letters 2024年第6期35卷 507-514页

作者： huizhong Wu Ruiheng Liang ge Song Zhongzheng hu Xuyang Zhang Minghua Zhou Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China

To mitigate the water pollution problem by photocatalytic degradation of typical antibiotics of tetracycline(TC),we prepared defective Bi_(2)Sn_(2)O_7(BSO)quantum dots(QDs)with a full spectral response due to Bi metal deposition,using a one-pot hydrothermal method,labeled as Bi@*** optimized Bi@BSOOV showed 73.4% removal of TC in 1 h under irradiation with a 50 W LED lamp in the wavelength band in the visible-near-infrared(vis-NIR)light,a rate that is substantially greater than that of pure BSO(14.7%).The synergistic interaction of Bi metal and oxygen vacancies(OVs)is crucial to boosting photocatalytic *** near-infrared region of the photo-response is extended by the surface plasmon resonance(SPR)effect of Bi metal,enhancing the photocatalytic performance and dramatically raising the efficiency of solar energy *** addition to inducing defect levels in BSO,the OVs also activate the surface adsorbed O_(2) to promote the production of·O_(2)^(-)and ^(1)O_(2).DFT calculations reveal that Bi metal and OVs can mutually tune the charge transfer *** the one hand,Bi metal can act as both a charge transfer bridge and an electron donor to assist charge *** the other hand,OVs-induced defect levels allow electrons that leap to the conduction band(CB)to first leap from the valence band(VB)to the defect levels,notably improving interfacial charge separation and *** concept of design executed in this study for altering the catalyst by introducing both OVs and Bi metal can provide a rational design idea and potential insight for improving the photocatalytic activity for environmental applications.

关键词： Bi metal Bi_(2)Sn_(2)O_7 quantum dots Surface plasmon resonance Oxygen vacancies

Formation behaviors of rod-like reactive shaped charge penetrator and their effects on damage capability

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Defence Technology（防务技术） 2024年第2期32卷 242-253页

作者： Tao Sun Haifu Wang Shipeng Wang Chao ge Die hu Pengwan Chen Yuanfeng Zheng Beijing Institute of Technology State Key Laboratory of Explosion Science and TechnologyBeijing100081China Xi'an Institute of Electromechanical Information Technology Xi'an710065China

Formation behaviors of rod-like reactive shaped charge penetrator(RRSCP)and their effects on damage capability are investigated by experiments and numerical *** pulsed X-ray technology and a spaced aluminum/steel plate with the thicknesses of 5 mm/100 mm are *** types of sphericalsegment aluminum-polytetrafluoroethylene-copper(Al-PTFE-Cu)reactive liners with Cu contents of 0%,46.6%,and 66%are fabricated and *** experimental results show that the reactive liners can form excellent rod-shaped penetrators with tail skirts under the shaped charge effect,but the tail skirts disappear over ***,rupturing damage to the aluminum plate and penetration to the steel plate are caused by the RRSCP *** simulation analysis,the RRSCP is formed by a mechanically and chemically coupled response with the reactive liner activated by shock in its outer walls and bottom and then backward overturning,forming a leading reactive penetrator and a following chemical energy *** unique formation structure determines the damage modes of the aluminum plate and the steel *** analysis indicates that the formation behaviors and damage capability of Al-PTFE-Cu RRSCP strongly depend on Cu *** increasing Cu content,the velocity,activation extent,and reaction extent of Al-PTFE-Cu RRSCP decrease,which contribute to elongation and alleviate the negative effects of chemical reactions on elongation,significantly increasing the length-diameter ratio and thus enhancing the capability of steel plate ***,the lower activation extent and energetic density will weaken the RRSCP's capability of causing rupturing damage to the aluminum plate.

关键词： Reactive materials Al-PTFE composites Reactive liner X-ray Penetration

Differences Between the Concentrations in Rabbit Body Fluid of Berberine Hydrochloride, Chlorogenic Acid, Baicalin, and Their Minimal Inhibitory Concentrations

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Agricultural Sciences in China 2009年第9期8卷 1143-1147页

作者： ZHANG Tao huANG hui-ling ZHANG Shuang LU Ping hu ge SUO Zhan-wei JIANG Dai-xun MU Xiang Beijing Key Laboratory of Traditional Chinese Veterinary Medicine Beijing University of Agriculture Beijing 102206 P.R.China College of Animal Science and Technology Hebei Agricultural University Baoding 071001 P.R.China Institute of Zoology Chinese Academy of Sciences Beijing 100101 P.R.China Beijing Key Laboratory of New Technology in Agricultural Application Beijing University of Agriculture Beijing 102206 P.R.China

To explore the relationship between the heat-clearing and detoxicating functions and the bacteriostatic actions of berberine hydrochloride （Ber. H）, chlorogenic acid （Chlo. A）, and baicalin （Bai）, their concentrations in rabbit body fluid were compared with their minimal inhibitory concentrations （MICs）. Their concentrations in rabbit blood and tissue fluid were determined by reversed-phase high performance liquid chromatography, and their MICs to Escherichia coli were determined by tube dilution method. The results showed that the peak concentrations of Ber. H, Chlo. A, and Bai in rabbit blood were 3.2, 5.03, and 7.63 μg mL^-1, and in rabbit tissue fluid were 0.12, 0.11, and 0.12 μg mL^-1, respectively. Their MICs to E. coli were, respectively, 1.0×10^3, 3.75 × 10^3, and 6.75 ×10^3μg mL^-1, which were far higher than the concentrations in rabbit body fluids. This study indicates that Ber. H, Chlo. A, and Bai have weak bacteriostatic actions and do not reach their effective inhibitory concentrations in rabbit body fluids, and their heat-clearing and detoxicating functions are independent on the bacteriostatic actions.

关键词： berberine chlorogenic acid baicalin plasma concentration tissue fluid concentrations MIC

MIRA-CRISPR/Cas13a结合磁珠量子点传感器快速检测甲型流感病毒方法的建立

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江苏预防医学 2024年第4期35卷 403-407页

作者：杨宁马君妍赵康辰吴涛朱小娟乔乔王烁虎歌吴斌崔仑标葛以跃国家卫生健康委员会肠道病原微生物重点实验室江苏省新发突发重大传染病病原微生物重点实验室江苏省疾病预防控制中心南京医科大学公共卫生学院

目的将多酶恒温快速扩增(MIRA)、成簇的规则间隔短回文重复序列及其相关蛋白Cas13a(CRISPR/Cas13a)与研发的磁珠量子点(MBQD)传感器相结合，建立一种甲型流感病毒(IAV)快速检测方法。方法针对IAV的M基因设计并筛选MIRA扩增引物、CRISP... 详细信息

目的将多酶恒温快速扩增(MIRA)、成簇的规则间隔短回文重复序列及其相关蛋白Cas13a(CRISPR/Cas13a)与研发的磁珠量子点(MBQD)传感器相结合，建立一种甲型流感病毒(IAV)快速检测方法。方法针对IAV的M基因设计并筛选MIRA扩增引物、CRISPR RNA (crRNA)、荧光报告探针及连接探针，对反应条件进行优化，建立MIRA-CRISPR/Cas13a-MBQD检测体系；评价该体系的检测灵敏度与特异性；比较建立的方法与实时荧光RT-PCR(RT-qPCR)法的一致性。结果建立的检测体系可以在60 min内完成检测，对IAV的检测灵敏度达1 copy RNA分子/反应；特异性试验表明其与新型冠状病毒(SARS-CoV-2)、乙型流感病毒(IBV)、呼吸道合胞病毒(RSV)、人偏肺病毒(HMPV)、副流感病毒(PIV)、腺病毒(ADV)、肺炎支原体(MP)均无交叉反应；临床样本检测结果显示，MIRA-CRISPR/Cas13a-MBQD与RT-qPCR法具有极高的检测一致性(Kappa=1.00)。结论建立的MIRA-CRISPR/Cas13a-MBQD检测体系可快速检测IAV,灵敏性、特异性较好。

关键词：多酶恒温快速扩增 CRISPR/Cas13a 量子点传感器甲型流感病毒快速检测

Evaluation of teplizumab's efficacy and safety in treatment of type 1 diabetes mellitus:A systematic review and meta-analysis

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World Journal of Diabetes 2024年第7期15卷 1615-1626页

作者： Xiao-Lan Ma Dan ge Xue-Jian hu Department of Endocrinology and Metabolism The Second Affiliated Hospital of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina

BACKGROUND Islets of Langerhans beta cells diminish in autoimmune type 1 diabetes mellitus(T1DM).Teplizumab,a humanized anti-CD3 monoclonal antibody,may help *** long-term implications on clinical T1DM development,safety,and efficacy are *** To assess the effectiveness and safety of teplizumab as a therapeutic intervention for individuals with *** A systematic search was conducted using four electronic databases(PubMed,Embase,Scopus,and Cochrane Library)to select publications published in peerreviewed journals written in *** odds ratio(OR)and risk ratio(RR)were calculated,along with their 95%*** assessed heterogeneity using Cochrane Q and I2 statistics and the appropriate P *** There were 8 randomized controlled trials(RCTs)in the current meta-analysis with a total of 1908 T1DM patients from diverse age cohorts,with 1361 patients receiving Teplizumab and 547 patients receiving a *** was found to have a substantial link with a decrease in insulin consumption,with an OR of 4.13(95%CI:1.72 to 9.90).Teplizumab is associated with an improved Cpeptide response(OR 2.49;95%CI:1.62 to 3.81)and a significant change in Glycated haemoglobin A1c(HbA1c)levels in people with type 1 diabetes[OR 1.75(95%CI:1.03 to 2.98)],and it has a RR of 0.71(95%CI:0.53 to 0.95).CONCLUSION In type 1 diabetics,teplizumab decreased insulin consumption,improved C-peptide response,and significantly changed HbA1c levels with negligible side *** appears to improve glycaemic control and diabetes management with good safety and efficacy.

关键词： Type-1 diabetes mellitus Teplizumab Anti-CD3 monoclonal antibody Insulin Glycated haemoglobin A1c Cpeptide

Baicalin Induces IFN-α/β and IFN-γ Expressions in Cultured Mouse Pulmonary Microvascular Endothelial Cells

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Journal of Integrative Agriculture 2012年第4期11卷 646-654页

作者： hu ge XUE Jiu-zhou LIU Jing ZHANG Tao DONG Hong DUAN hui-qin YANG Zuo-jun REN Xiao-ming MU Xiang Animal Science and Technology College Beijing University of Agriculture Beijing 102206 P.R.China Beijing Key Laboratory of Traditional Chinese Veterinary Medicine Beijing University of Agriculture Beijing 102206 P.R.China

We studied the effect of baicalin,an extract from Radix Scutellariae（a traditional Chinese medicine） in inducing mouse pulmonary microvascular endothelial cells（MPMVECs） to produce interferons（IFNs）.MPMVECs were cultured in vitro in the presence of different concentrations of baicalin（10,20,and 30 μg mL-1）,and the cells and the culture media were harvested at various time *** proteins and mRNA levels（relative to β-actin） of IFN-α/β and IFN-γ were analyzed by RT-PCR and enzyme-linked immunosorbent assay（ELISA）.It was observed that baicalin substantially up-regulated the expression of IFN-α/β and IFN-γ.In all baicalin-treated groups,the relative levels of IFN-α/β and IFN-γ mRNAs peaked after 12 h of culturing,and IFN-α/β and IFN-γ proteins peaked after 24 h of *** results suggest that baicalin can effectively induce the expression of IFNs in pulmonary microvascular endothelial cells,and thus potentially act as an antiviral *** study may provide background information for developing new antiviral drugs based on baicalin.

关键词： baicalin pulmonary microvascular endothelial cells interferon mouse

Haixi:Pioneer of a Workable Plan for Ecological, Economic and Social Development

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China Today 2016年第10期65卷 62-63页

作者： huANG YUANJUN hu ge

DURING his inspection tour of Qinghai Province in August this year Chinese President Xi Jinping observed that＂the most valuable part of Qinghai is its ecology,in which lie the province＇s most important responsibility and biggest potential.＂President Xi has repeatedly stressed that ecological preservation is in the interest of a society＇s long-term and overall development.

关键词： Pioneer inspection repeatedly preservation responsibility Plateau beauty berry Qinghai valuable

Calcium-based polymers for suppression of soil acidification by improving acid-buffering capacity and inhibiting nitrification

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Journal of Environmental Sciences 2024年第5期139卷 138-149页

作者： Fei Kang Yunshan Meng Yanning ge Yun Zhang Haixiang Gao Xueqin Ren Jie Wang Shuwen hu Beijing Key Laboratory of Farmland Soil Pollution Prevention-control and Remediation College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Department of Applied Chemistry China Agricultural UniversityBeijing 100193China

Soil acidification is a major threat to agricultural sustainability in tropical and subtropical *** and environmentally friendly materials,such as calcium lignosulfonate(CaLS),calcium poly(aspartic acid)(PASP-Ca),and calcium polyγ-glutamic acid(γ-PGA-Ca),are known to effectively ameliorate soil ***,their effectiveness in inhibiting soil acidification has not been *** study aimed to evaluate the effect of CaLS,PASP-Ca,andγ-PGA-Ca on the resistance of soil toward acidification as directly and indirectly(i.e.,via nitrification)caused by the application of HNO_(3)and urea,*** comparison,Ca(OH)_(2)and lignin were used as the inorganic and organic controls,*** the materials,γ-PGA-Ca drove the substantial improvements in the pH buffering capacity(pHBC)of the soil and exhibited the greatest potential in inhibiting HNO_(3)-induced soil acidification via protonation of carboxyl,complexing with Al~(3+),and cation exchange *** acidification induced by urea,CaLS was the optimal one in inhibiting acidification and increasing exchangeable acidity during ***,the sharp reduction in the population sizes of ammonia-oxidizing bacteria(AOB)and ammonia-oxidizing archaea(AOA)confirmed the inhibition of nitrification via CaLS ***,compared to improving soil pHBC,CaLS may play a more important role in suppressing indirect ***,γ-PGA-Ca was superior to PASP-Ca and CaLS in enhancing the soil pHBC and the its resistance to acidification induced by HNO_(3) addition,whereas CaLS was the best at suppressing urea-driven soil acidification by inhibiting *** conclusion,these results provide a reference for inhibiting soil re-acidification in intensive agricultural systems.

关键词： Calcium-based polymer Soil acidification pH buffering capacity Nitrification inhibition