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Achieving Narrowed Bandgaps and Blue-Light Excitability in Zero-Dimensional Hybrid Metal Halide Phosphors via Introducing Cation-Cation Bonding

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Energy & Environmental Materials 2024年第1期7卷 294-300页

作者： Pengfei Fu Shining Geng Ruixiang Mi Ranyun wu Guangya Zheng Binbin Su Zhiguo xia Guangda Niu Jiang Tang Zewen xiao wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China The State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSchool of Materials Science and TechnologySouth China University of TechnologyGuangzhou 510640China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China

Zero-dimensional(0D)hybrid metal halides,which consist of organic cations and isolated inorganic metal halide anions,have emerged as phosphors with efficient broadband ***,these materials generally have too wide bandgaps and thus cannot be excited by blue light,which hinders their applications for efficient white light-emitting diodes(WLEDs).The key to achieving a blue-light-excitable 0D hybrid metal halide phosphor is to reduce the fundamental bandgap by rational chemical *** this work,we report two designed hybrid copper(I)iodides,(Ph_(3)MeP)_(2)Cu_(4)I_(6)and(Cy_(3)MeP)_(2)Cu_(4)I_(6),as blue-light-excitable yellow phosphors with ultrabroadband *** these compounds,the[Cu_(4)I_(6)]^(2-)anion forms an I6 octahedron centered on a cationic Cu_(4)*** strong cation-cation bonding within the unique cationic Cu_(4)tetrahedra enables significantly lowered conduction band minimums and thus narrowed bandgaps,as compared to other reported hybrid copper(I)*** ultrabroadband emission is attributed to the coexistence of free and self-trapped *** WLED using the[Cu_(4)I_(6)]^(2-)anion-based single phosphor shows warm white light emission,with a high luminous efficiency of 65 Im W^(-1)and a high color rendering index of *** work provides strategies to design narrow-bandgap 0D hybrid metal halides and presents two first examples of blue-light-excitable 0D hybrid metal halide phosphors for efficient WLEDs.

关键词： blue-light-excitable cation-cation bonding hybrid metal halide phosphor zero-dimensional

Effect of stress-relief annealing on thermal fatigue cracks for die-casting die steels

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Journal of Iron and Steel Research International 2024年第5期31卷 1164-1176页

作者： Zhi-xiong Bai xiao-chun wu School of Materials Science and Engineering Shanghai UniversityShanghai200444China

The effect of stress-relief annealing at different stages of thermal fatigue tests on crack growth was investigated using a self-built thermal cycle *** results showed that annealing could limit crack expansion *** reduced dislocation density and released the accumulation of residual *** addition,the strain accumulation in carbides was reduced by this *** was also found that double annealing was even more effective at inhibiting crack expansion compared to single stress-relief *** 1000 cycles,the maximum crack length was reduced by 31.1%and 45.2%for the samples after using the optimal single and double annealing processes,*** single stress-relief annealing,earlier annealing provides more benefit in delaying crack ***,effective double stress-relief annealing requires a suitable time interval between the annealing ***,after 800 cycles,surface hardness decreased significantly accompanied by an increase in the size and number of carbides,and cracks expanded predominantly along grain boundaries.

关键词： Thermal fatigue Steel Carbide Stress-relief annealing Dislocation Residual stress

PEGylated bacteria restore intestinal mucosal barrier

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Acta Pharmaceutica Sinica B 2024年第9期14卷 4186-4188页

作者： Menghang Zu Xue xia Bo xiao State Key Laboratory of Resource Insects College of SericultureTextileand Biomass SciencesSouthwest UniversityChongqing 400715China Department of Pharmacy Personalized Drug Therapy Key Laboratory of Sichuan ProvinceSichuan Provincial People’s HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengdu 610054China

The mucosal barrier of the gastrointestinal tract(GIT)is crucial for the overall health of the *** disruption permits the infiltration of intestinal microorganisms into the underlying mucosa,resulting in infections and inflammatory conditions,such as inflammatory bowel disease(IBD),metabolic disorders,and autoimmune diseases1,***,strategies to protect the mucosal barrier from exogenous stimuli or to facilitate its recovery have become increasingly ***,immunomodulators,corticosteroids,and biological agents have been widely employed to treat IBD by alleviating inflammation and enhancing mucosal ***,they can also produce serious systemic toxicity3,4;therefore,there is an urgent need for exploiting innovative strategies to fortify the intestinal mucosal barrier against the invasion of exogenous damaging factors.

关键词： PEGylation Probiotic Mucus penetration Colonic mucosal barrier Colitis Diabetes

Correlation of tumor necrosis factor-β and interleukin-1 gene cluster polymorphism with susceptibility to bacteremia in patients undergoing kidney transplantation

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Chinese Medical Journal 2013年第24期126卷 4603-4607页

作者： wu xiao-xia WAN Qi-quan YE Qi-fa ZHOU Jian-dang Nursing Department Department of Transplant Surgery Nursing Department Department of Clinical Laboratory of Microbiology Nursing Department the Third xiangya Hospital Central SouthUniversity Changsha 410013 Hunan China

Background Bacteremia remains a significant cause of morbidity and mortality after kidney transplantation. This study was conducted to investigate whether the polymorphisms of tumor necrosis factor （TNF）-β, interleukin （IL）-1β, and IL-1 receptor antagonist （IL-lra） gene predicted the susceptibility to bacteremia within the first 6 months after kidney transplantation. Methods Subjects comprised 82 infected kidney transplant recipients and 60 non-infected kidney transplant recipients. Bacteremia was diagnosed in 16 of the 82 infected recipients. Genomic DNA from these 142 kidney transplant recipients was extracted from peripheral blood leukocytes. Regions containing the Ncol polymorphic site at position ＋252 of TNF-β gene and the Aval polymorphic site at position -511 of IL-Iβ gene were amplified by polymerase chain reaction （PCR） and subsequently digested with Ncol and Aval restriction enzymes, respectively. The polymorphic regions within intron 2 of IL-lra gene containing variable numbers of a tandem repeat （VNTR） of 86 base pairs were amplified by PCR. Results Genotypic and allelic frequencies were similar between infected recipients and non-infected ones. Individual locus analysis showed that recipient TNF-β and IL-lra gene polymorphisms were not associated with the presence of bacteremia （P=0.684 and P=0.567, respectively）. However, genotype analysis revealed that recipient IL-1β 511CC genotype was strongly associated with susceptibility to develop bacteremia （P=0.003）. Recipient IL-1β-511CC genotype （odds ratio 5.242, 95% confidence intervals 1.645-16.706, P=0.005） independently predicted the risk for bacteremia within the first 6 months after kidney transplantation. Conclusions These findings indicate a critical role of IL-1β gene polymorphisms in susceptibility to bacteremia after kidney transplantation, which may be useful to screen for patients at higher risk for post-transplant bacteremias. Thus, the identified individuals can benefit from preventive treatm

关键词： tumor necrosis factor-β interleukin-l β interleukin-1 receptor antagonist gene polymorphism bacteremia kidney transplantation

Diagnostic Accuracy of Computerized Bowel Sound Analysis with Non-Invasive Devices for Irritable Bowel Syndrome:A Systematic Review and Meta-Analysis

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Chinese Medical Sciences Journal 2024年第2期39卷 122-130页

作者： xia-xiao Yan Yue-Lun Zhang Yu-Pei Zhang Ying-Yun Yang Dong wu Department of Gastroenterology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Eight-Year Medical Doctor Program Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Medical Research Center Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China

Objective To assess the diagnostic accuracy of bowel sound analysis for irritable bowel syndrome(IBS)with a systematic review and *** We searched MEDLINE,Embase,the Cochrane Library,Web of Science,and IEEE Xplore databases until September ***-sectional and case-control studies on diagnostic accuracy of bowel sound analysis for IBS were *** estimated the pooled sensitivity,specificity,positive likelihood ratio,negative likeli-hood ratio,and diagnostic odds ratio with a 95% confidence interval(CI),and plotted a summary receiver operat-ing characteristic curve and evaluated the area under the *** Four studies were *** pooled diagnostic sensitivity,specificity,positive likelihood ratio,nega-tive likelihood ratio,and diagnostic odds ratio were 0.94(95%CI,0.87‒0.97),0.89(95%CI,0.81‒0.94),8.43(95%CI,4.81‒14.78),0.07(95%CI,0.03‒0.15),and 118.86(95%CI,44.18‒319.75),respectively,with an area under the curve of 0.97(95%CI,0.95‒0.98).Conclusions Computerized bowel sound analysis is a promising tool for ***,limited high-quality data make the results'validity and applicability *** is a need for more diagnostic test accuracy studies and better wearable devices for monitoring and analysis of IBS.

关键词： irritable bowel syndrome bowel sound analysis diagnostic accuracy systematic review meta-analysis

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APOBEC3C的研究进展

中国免疫学杂志 2019年第2期35卷 240-243页

作者：吴小霞琼台师范学院数理系海口571100

与APOBEC3s其他成员相比,APOBEC3C是特殊的,因为APOBEC3C的抗病毒和抗逆转录元件的功能较弱。APOBEC3C只有一个与锌离子协调的胞嘧啶脱氨酶域,并根据氨基酸特异性被划分为A3Z2。与APOBEC3G相比,APOBEC3C引发HIV-1DNA上胞嘧啶脱氨基的数... 详细信息

与APOBEC3s其他成员相比,APOBEC3C是特殊的,因为APOBEC3C的抗病毒和抗逆转录元件的功能较弱。APOBEC3C只有一个与锌离子协调的胞嘧啶脱氨酶域,并根据氨基酸特异性被划分为A3Z2。与APOBEC3G相比,APOBEC3C引发HIV-1DNA上胞嘧啶脱氨基的数目较少,所以降低了其抑制HIV-1逆转录及整合的能力。APOBEC3C可在靶细胞引起G→A突变,而G→A突变能导致病毒多样性却无法抑制病毒复制。人类APOBEC3C编码的S188I多态性增强了蛋白质的酶促活性及其抑制HIV-1的能力。另外,人类APOEC3C酶的二聚化增加了单链DNA的持续合成能力,可导致体外和细胞内逆转录过程中的大量突变。APOBEC3C已在灵长类的正选择下进化,是病毒在天然感染过程中必须对抗的重要屏障。因此,对APOBEC3C的研究可为抗病毒和抗癌症的治疗设计提供一些思路。

关键词： APOBEC3C APOBEC3 HIV-1 Vif

Design and Implementation of Nonlinear Precoding for MIMO-SDMA Toward 6G Wireless

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China Communications 2024年第1期21卷 69-87页

作者： Chaowu wu Yue xiao Shu Fang Gang wu National Key Laboratory of Wireless Communications University of Electronic Science and Technology of ChinaChengdu 611731China

In this paper,we present a novel and robust nonlinear precoding(NLP)design and detection structure specifically tailored for multiple-input multipleoutput space division multiple access(MIMO-SDMA)systems toward 6G *** approach aims to effectively mitigate the impact of imperfect channel estimation by leveraging the channel fluctuation mean square error(MSE)for reconstructing a highly accurate precoding matrix at the ***,we introduce a simplified receiver structure that eliminates the need for equalization,resulting in reduced interference and notable enhancements in overall system *** conduct both computer simulations and experimental tests to validate the efficacy of our proposed *** results reveals that the proposed NLP scheme offers significant performance improvements,making it particularly well-suited for the forthcoming 6G wireless.

关键词： MIMO-SDMA nonlinear precoding Tomlinson-Harashima precoding(THP) vector perturbation(VP)

Identification of QTLs Associated with Resistance to Pseudomonas syringae *** in Soybean(Glycine max(L.)Merr)

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Journal of Northeast Agricultural University(English Edition) 2021年第2期28卷 1-14页

作者： Mei Hong-yao Liu Yang Pan xiao-cheng Su An-yu wu xiao-xia College of Agriculture Northeast Agricultural UniversityHarbin 150030China 65301 Farm and Sideline Bases of Army Wudalianchi 164100HeilongjiangChina College of Resources and Environmental Sciences Northeast Agricultural UniversityHarbin 150030China Institute of Green Food in Heilongjiang Harbin 150030China

Soybean bacterial spot disease caused by Pseudomonas syringae *** which is a bacterial disease seriously affects soybean *** soybean germplasms and recombinant inbred lines(RILs)population were used to identify the resistant trait after inoculated with ***(***001)in this ***-density genetic mapping was obtained by specific length amplified fragment sequencing(SLAF-seq)of 149 RILs population which was derived from the crossing between Charleston and *** results indicated that 10 germplasm resources had four resistant germplasms included highly resistant cultivar Charleston,four susceptible varieties included Dongnong594 and two moderately resistant *** quantitative trait locus(QTLs)were detected in RILs population by the composite interval mapping(CIM)method,and located on Linkage Group(LG)D1b(chromosome two),LG C2(chromosome six)and LG H(chromosome 12),*** scores ranged from 2.68 to 4.95 and the phenotypic variation percentage was from 6%to 11%.Six candidate genes were detected,according to the result of gene annotation *** of them had relationship with protein kinase activity,protein phosphorylation and leucine rich repeat(LRR)transmembrane protein,which had high expression after inoculated with *** by qRT-PCR.

关键词： soybean QTL mapping Pseudomonas syringae pv.Glycinea bacterial spot disease candidate gene

Overexpression of GmBIN2,a soybean glycogen synthase kinase 3 gene,enhances tolerance to salt and drought in transgenic Arabidopsis and soybean hairy roots

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Journal of Integrative Agriculture 2018年第9期17卷 1959-1971页

作者： WANG Ling-shuang CHEN Qing-shan XIN Da-wei QI Zhao-ming ZHANG Chao LI Si-nan JIN Yang-mei LI Mo MEI Hong-yao SU Anoyu wu xiao-xia College of Agriculture Northeast Agricultural University/Key Laboratory of Soybean BiologyMinistry of EducationHarbin 150030P.R.China College of Resources and Environment Northeast Agricultural UniversityHarbin 150030P.R.China

Glycogen synthase kinase 3 （GSK3） is a kind of sedne/threonine kinase widely found in eukaryotes. Many plant GSK3 kinases play important roles in regulating stress responses. This study investigated BRASSINOSTEROID-INSENSITIVE 2 （GmBIN2） gene, a member of the GSK3 protein kinase family in soybean and an orthologue of Arabidopsis BIN2/AtSK21. GmBIN2 expression was increased by salt and drought stresses, but was not significantly affected by the ABA treatment. To examine the function of GrnBIN2, transgenic Arabidopsis and transgenic soybean hairy roots were generated. Overexpression of GmBIN2 in Arabidopsis resulted in increased germination rate and root length compared with wild-type plants under salt and mannitol treatments. Overexpression of GmBIN2 increased cellular Ca2~ content and reduced Na~ content, enhancing salt tolerance in transgenic Arabidopsis plants. In the soybean hairy root assay, overexpression of GmBIN2 in transgenic roots also showed significantly higher relative root growth rate than the control when subjected to salt and mannitol treatments. Measurement of physiological indicators, including proline content, superoxide dismutase （SOD） activity, and relative electrical conductivity, supported this conclusion. Furthermore, we also found that GmBIN2 could up-regulate the expression of some stress-related genes in transgenic Arabidopsis and soybean hairy roots. Overall, these results indicated that GmBIN2 improved tolerance to salt and drought in transgenic Arabidopsis and soybean hairy roots.

关键词： GmBIN2 gene abiotic stress transgenic Arabidopsis soybean hairy roots