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低蓝光的白光LED制备与评价指标修正

半导体技术 2024年第11期49卷 968-972,997页

作者：杨佳楠王书昶赵见国索博研刘金鑫林俊江孙智江常熟理工学院电子信息工程学院江苏常熟215500 南京信息工程大学电子与信息工程学院南京210044 海迪科(南通)光电科技有限公司江苏南通226500

基于GaN基蓝光LED激发荧光粉制备的白光LED已取得广泛应用,然而,照明光源中蓝光成分对人体健康、昼夜节律的影响逐渐受到关注。针对蓝光伤害问题,提出了修正后的蓝光危害占比指数(Bmr),以更合理地评估白光光源的蓝光危害指标;针对夜间... 详细信息

基于GaN基蓝光LED激发荧光粉制备的白光LED已取得广泛应用,然而,照明光源中蓝光成分对人体健康、昼夜节律的影响逐渐受到关注。针对蓝光伤害问题,提出了修正后的蓝光危害占比指数(Bmr),以更合理地评估白光光源的蓝光危害指标;针对夜间照明用白光LED对人体昼夜节律的影响,使用商用蓝/紫光LED系统研究了激发波长、以及荧光粉种类和配比对暖白光LED的健康、护眼指标的影响。研究发现,基于410 nm波长紫光LED制备的暖白光LED光源的Bmr和褪黑素敏感区间光功率占比指数(Mr)分别仅为4.2%和9.2%,接近于卤素灯的水平,显著优于商用高品质暖白光LED,为夜间低蓝光舒适护眼、低褪黑素干扰的健康照明提供了新选择。

关键词：蓝光危害夜间照明暖白光LED 褪黑素色温荧光粉

陕西近年登记油菜品种产量和主要性状变化趋势分析

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陕西农业科学 2023年第1期69卷 4-10页

作者：曹小东任军荣王天舒赵佳男高静茹尚丽平赵亚军李保军王灏陕西省杂交油菜研究中心陕西杨凌712100 西安市农产品质量安全检验监测中心陕西西安710000

通过搜集整理2018-2021年陕西省64个国家登记油菜品种的信息,对其产量、主要性状的变化、相关性和主成份进行分析,以期了解品种更替趋势和对各育种目标性状的方向性要求,探索产量和各性状间的关联性及育种策略。结果表明:随年份更替,整... 详细信息

通过搜集整理2018-2021年陕西省64个国家登记油菜品种的信息,对其产量、主要性状的变化、相关性和主成份进行分析,以期了解品种更替趋势和对各育种目标性状的方向性要求,探索产量和各性状间的关联性及育种策略。结果表明:随年份更替,整体来讲,株高和千粒重稍有升高趋势,年际间变化率分别为5.27%和1.88%;有效分枝数和单株角果数呈下降趋势,其中单株角果数以年际间15.25%的变化率发生极显著变化;每角粒数、芥酸、硫苷和含油量的变化平稳,年均变化量分别为0.79、0.04%、1.77μmol/g和1.44%。相关性分析揭示,产量与单株角果数、每角粒数紧密关联,其余各性状间的协同作用或抑制作用共同构成了品种的特异性、一致性和稳定性。PCA分析筛选出了对总体方差累计贡献率达63.18的3个主成分,其中株高、有效分枝数、单株角果数、每角粒数和千粒重等是造成这些品种间差异的主要因素。未来育种,继续保持双低标准的同时,提升每角粒数和千粒重等性状,从而达到高产的目标。

关键词：油菜品种登记产量经济性状品质

Superior high-temperature wear resistance of an Ir-Ta-Ni-Nb bulk metallic glass

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Journal of Materials Science & Technology 2023年第27期158卷 121-132页

作者： Fei Sun Shengtao Deng jianan Fu Jiahua Zhu Dandan Liang Pengfei Wang Hang zhao Feng Gong Jiang Ma Yanhui Liu Jun Shen Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Cross-scale Manufacturing Mechanics Southern University of Science and Technology Shenzhen 518055China Shanghai Engineering Research Center of Physical Vapor Deposition(PVD)Superhard Coating and Equipment Shanghai Institute of TechnologyShanghai 201418China Institute of Physics Chinese Academy of SciencesBeijing 100190China

Wear resistance is a critical consideration in engineering *** this study,we demonstrated an Ir-Ta-Ni-Nb bulk metallic glass(BMG)with outstanding high-temperature wear resistance and revealed its promising applications in extreme *** wear behavior and mechanism were systemati-cally investigated from room temperature(RT)to 750℃.The results show that the wear rate increases from∼2.65×10^(-6)mm^(3)N^(-1)m^(-1)to∼10.56×10^(-6)mm^(3)N^(-1)m^(-1)in the temperature span RT to 400℃,following abrasive wear and flash temperature-induced oxidative wear during the ***,at the higher temperature of 600℃,further heating due to frictional heat leads to a softening of the wear surface,resulting in a maximum wear rate of∼20.99×10^(-6)mm^(3)N^(-1)m^(-1)under softness-driven abrasive wear as well as oxidative ***,the wear resistance at an even higher temperature of 750℃shows a paradoxical improvement of∼7.08×10^(-6)mm^(3)N^(-1)m^(-1),which is attributed to the formation of an oxide layer with a thickness of several microns,avoiding violent wear of *** re-sults demonstrate the unreported outstanding high-temperature wear resistance of the Ir-Ta-Ni-Nb BMG,especially its excellent capability to resist wear at 750℃,leading to the promising applications of BMG in the fields of aerospace,metallurgy,and nuclear industries.

关键词： High-temperature alloy Superior wear resistance Wear mechanisms Bulk metallic glass

3D MoS_(2) foam integrated with carbon paper as binder-free anode for high performance sodium-ion batteries

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Journal of Energy Chemistry 2022年第2期31卷 26-33页

作者： Fangying Zheng Zeyu Wei Huicong Xia Yunchuan Tu Xiangyu Meng Kaixin Zhu Jiao zhao Yimin Zhu jianan Zhang Yan Yang Dehui Deng Institute of Environmental Remediation Dalian Maritime UniversityDalian 116026LiaoningChina State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina Zhang Dayu School of Chemistry Dalian University of TechnologyDalian 116024LiaoningChina

Molybdenum sulfide(MoS_(2))with well-designed porous structure has the potential to be great electrode materials in sodium-ion batteries due to its high theoretical capacity and abundant resource,however,hindered by its intrinsic low conductivity and ***,MoS_(2) with 3 D macroporous foam structure and high conductivity was obtained through SiO_(2) templates and integrated with carbon paper(3 D FMoS_(2)/CP).It has showed superior specific capacity(225 m A h g^(-1),0.4–3 V)and cycling stability(1000 cycles)at high rate(2000 m A g^(-1)),with a low decay rate(0.033%per cycle)in sodium-ion *** excellent electrochemical performance may originate from its unique integrated structure:3 D MoS_(2) macropores providing high surface area and abundant transfer channels while carbon paper enhancing the conductivity of MoS_(2) and avoiding unnecessary side reactions brought by binder addition.

关键词： 3D MoS_(2)foam Carbon paper Binder-free electrode High performance Sodium-ion batteries

克雷伯氏菌属(Klebsiella)细菌比较基因组学分析揭示多复制子抗性质粒介导广泛的抗性基因传播

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微生物学报 2021年第9期61卷 2854-2868页

作者：王雪赵佳男刘智慧张立敏常晗秦姣朱云芸胡国成胡诗佳阳建春贾仲昕李俊保鞠厚斌王承民季芳秦建华河北农业大学动物医学院河北保定071001 广东省科学院动物研究所广东省动物保护与资源利用重点实验室广东省野生动物保护与利用公共实验室广东广州510260 联勤保障部队北戴河康复疗养中心河北秦皇岛066100 中国科学院动物研究所北京100101 北京动物园圈养野生动物技术北京市重点实验室北京100044 生态环境部华南环境科学研究所广东广州510530 郑州市动物园河南郑州450008 上海市动物疫病预防控制中心上海200336

【目的】研究克雷伯氏菌与多复制子抗性质粒间的关系,分析细菌携带多复制子质粒对抗生素环境的响应机制。【方法】以2018-2020年分离的56株不同来源克雷伯氏菌(Klebsiella sp.)分离株为研究对象,利用微量肉汤稀释法评估其多重耐药表型,... 详细信息

【目的】研究克雷伯氏菌与多复制子抗性质粒间的关系,分析细菌携带多复制子质粒对抗生素环境的响应机制。【方法】以2018-2020年分离的56株不同来源克雷伯氏菌(Klebsiella sp.)分离株为研究对象,利用微量肉汤稀释法评估其多重耐药表型,对分离菌株进行全基因组测序(WGS),通过细菌全基因组关联分析(BGWAS)技术和比较基因组学方法深入解析多复制子抗性质粒形成的机制。【结果】耐药表型分析发现野生动物来源的菌株具有更广的耐药谱系,总体Klebsiella sp.对氨苄西林表现出很高的耐药率(80.36%),尤其是马来穿山甲来源菌株对头孢类抗生素高度耐受,同时对氯霉素、左氧氟沙星和复方新诺明等药物耐受,基因组分析发现这些菌株携带了抗性质粒和更多的抗生素抗性基因。进一步对69个质粒序列分析,发现有28个质粒为多复制子质粒,主要携带bla_(CTX-M-15)、bla_(CTX-M-14)、bla_(CTX-M-55)、bla_(OXA-1)和bla_(TEM-1)等β-内酰胺酶基因。细菌携带质粒类型分析认为Klebsiella pneumoniae可能是多复制子质粒的重要宿主,质粒骨架与结构分析发现多复制子质粒多由2个或2个以上单个质粒融合而成,携带此类质粒的菌株不仅获得了更广的耐药表型,而且在全球传播扩散分布逐年增加,因此产生对抗生素环境更强的适应性。【结论】多重耐药性细菌呈现的表型与携带的多复制子质粒有关,相比较下多复制子质粒比非多复制子质粒有更强的抗性基因携带能力,或许是细菌在强大的抗生素压力下产生的重要响应机制。本研究对于未来探索细菌抗性基因的传播扩散机制具有重要意义。

关键词：多复制子质粒克雷伯氏菌抗生素抗性基因比较基因组学分析

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乡村振兴目标下生态产品价值实现模式研究

衡水学院学报 2024年第1期26卷 33-37页

作者：赵艳霞张则艺吴红霞刘佳男华北理工大学经济管理学院河北唐山063200

良好的生态环境不仅是一种自然资源,更是一种经济资源,它直接影响着整个社会经济的发展水平和质量。而生态产品价值实现机制是生态资源转化为经济价值的现实桥梁,也是全面推进乡村振兴的绿色引擎。基于生态系统功能,生态产品可分为物质... 详细信息

良好的生态环境不仅是一种自然资源,更是一种经济资源,它直接影响着整个社会经济的发展水平和质量。而生态产品价值实现机制是生态资源转化为经济价值的现实桥梁,也是全面推进乡村振兴的绿色引擎。基于生态系统功能,生态产品可分为物质供给、调节服务及文化服务三类,这些生态产品具有自然稀缺性、经济消费性、时空差异性等特征。构建“资源—资金—资产—资本”为生态产品价值实现内生逻辑的分析链,从而以生态产品的价值为基础探索差异化的价值实现模式,以生态振兴助力乡村振兴。

关键词：乡村振兴生态产品生态产品价值实现

辣椒秸秆对伊普吕肉兔生长性能、血清生化指标和免疫指标的影响

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饲料工业 2024年第13期45卷 135-139页

作者：徐红蕊聂芙蓉黄安群侯甲男赵金艳哈斯通拉嘎郭良兴河南牧业经济学院河南郑州450046

试验旨在研究辣椒秸秆对伊普吕肉兔的生长性能、血清生化指标和免疫指标的影响。选取35日龄断奶伊普吕公肉兔60只,随机分为3组,每组4个重复,每个重复5只。对照组饲喂基础日粮,试验Ⅰ组和试验Ⅱ组分别添加5%和10%辣椒秸秆。预试期5 d,正... 详细信息

试验旨在研究辣椒秸秆对伊普吕肉兔的生长性能、血清生化指标和免疫指标的影响。选取35日龄断奶伊普吕公肉兔60只,随机分为3组,每组4个重复,每个重复5只。对照组饲喂基础日粮,试验Ⅰ组和试验Ⅱ组分别添加5%和10%辣椒秸秆。预试期5 d,正试期28 d。结果显示:试验Ⅰ组肉兔的末重显著高于对照组和试验Ⅱ组(P<0.05);试验Ⅰ组肉兔血清总蛋白、白蛋白显著高于对照组(P<0.05),尿素氮显著低于对照组(P<0.05);试验Ⅰ组肉兔血清免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、干扰素γ(IFN-γ)、白细胞介素6(IL-6)和溶菌酶水平显著高于其余两组(P<0.05)。综上,辣椒秸秆可以提高伊普吕肉兔的生长性能和免疫能力,以饲粮中添加5%辣椒秸秆效果最佳。

关键词：辣椒秸秆伊普吕肉兔生长性能血清生化指标免疫能力

Microfluidic Electrospray Niacin Metal-Organic Frameworks Encapsulated Microcapsules for Wound Healing

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Research 2019年第1期2019卷 1032-1042页

作者： Guopu Chen Yunru Yu Xiuwen Wu Gefei Wang Guosheng Gu Feng Wang jianan Ren Huidan Zhang Yuanjin zhao Research Institute of General Surgery Jinling HospitalMedical School of Nanjing UniversityNanjing 210002China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China School of Engineering and Applied Sciences and Department of Physics Harvard UniversityCambridgeMassachusetts 02138USA

Niacin metal-organic frameworks(MOFs)encapsulated microcapsules with alginate shells and copper-/zinc-niacin framework cores were in situ synthesized by using a microfuidic electrospray approach for wound *** the alginate shells were bacteriaresponsively degradable,the niacin MOFs encapsulated microcapsules could intelligently,controllably,and programmably release calcium,copper,and zinc ions,depending on the degree of *** released ions could not only kill microbes by destroying their membrane and inducing the outfow of nutrient substance,but also activate copper/zinc superoxide dismutase(Cu/ZnSOD)to eliminate oxygen free radicals and rescue the cells from oxidative stress ***,the simultaneously released niacin could promote hemangiectasis and absorption of functional metal ***,the niacin MOFs encapsulated microcapsules were imparted with outstanding antibacterial,antioxidant,and angiogenesis *** on an in vivo study,we have also demonstrated that the chronic wound healing process of an infected full-thickness skin defect model could be signifcantly enhanced by using the niacin MOFs encapsulated microcapsules as therapeutic ***,the microfuidic electrospray niacin MOFs encapsulated microcapsules are potential for clinical applications.

关键词： properties shells copper

GSDMB N-terminal assembles in plasma membrane to execute pyroptotic cell death

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Genes & Diseases 2022年第6期9卷 1405-1407页

作者： Wenbin Gong Peizhao Liu Juanhan Liu Yangguang Li Tao Zheng Xiuwen Wu Yun zhao jianan Ren School of Medicine Southeast UniversityResearch Institute of General SurgeryJinling HospitalNanjingJiangsu 210002PR China Medical School of Nanjing University NanjingJiangsu 210093PR China BenQ Medical Center The Affiliated BenQ Hospital of Nanjing Medical UniversityNanjingJiangsu 210019PR China

Human genome encodes six paralogous gasdermin genes:GSDMA,GSDMB,GSDMC,GSDMD,GSDME and DFNB59.1 Proteolytic cleavage of these gasdermin proteins liberates an N-terminal(NT)fragment from autoinhibition,which assembles in membrane to form pores and execute pyroptotic cell death in general.1 In contrast to other gasdermins,gasdermin B(GSDMB)is the only gasdermin gene that has not been identified in *** et al first shed light on the molecular mechanism by which cytotoxic lymphocyte-derived granzyme A(GZMA)cleaves GSDMB to execute pyroptosis in GSDMB-positive cells,especially in cancer cells.2 In this issue of Cell,Hansen et al reported a dynamic host pathogen *** prevents GSDMB-mediated lysis by secreting IpaH7.8,which targets and ubiquitinates GSDMB for 26S proteasome destruction.3 They showed that GSDMB implements bacteriocidic ability by recognition of the phospholipids on Gram-negative bacterial membranes rather than lysing host *** their experimental design and data are clearly presented and straightforward,there are still some doubts to be clarified.

关键词： death execute GSD