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A novel phosphorus oxide quantum dots as an emissive nanomaterial for inorganic ions screening and bioimaging

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Chinese Chemical Letters 2021年第9期32卷 2856-2860页

作者： Zhen Fang Yuting Liang Xiaomei wang Shuhan Zhang Jun Yu Hu Xu yuhong wang Research Institute of Applied Catalysis School of Chemical and Environmental EngineeringShanghai Institute of TechnologyShanghai 201418China

In this work,a novel blue-green fluorescence phosphorous oxide quantum dots(PO QDs)was synthesized by solvothermal method in N-methyl-2-pyrrolidone(NMP)solution without any protection treatment during *** excitation at 400 nm,PO QDs emitted blue-green fluorescence with quantum yield of *** QDs exhibited the high inertness to air or moisture,the excellent water solubility,and stable emission intensity in a wide pH range and in high ionic strength ***,PO QDs could give the positive optical response to iron ions(Fe^(3+))and iodine ion(I^(-)).The photoluminescence(PL)of PO QDs could be directly quenched by Fe^(3+).While I^(-)quenched the PO QDs PL by means of Ag^(+)-mediated PO QDs system via the internal filtration effects(IFE)induced by the formation of ***,the biocompatibility and low toxicity of PO QDs verified in bean sprout and Hela cells indicated the promising application of PO QDs in medicine related ***,PO QDs could also be utilized in luminescent composite film for various application scenarios.

关键词： Phosphorus oxide quantum dots Emissive material Bioimaging Ion screening Iodine ion Iron ion

兰州市医务人员丙型肝炎防治知识知晓情况及影响因素分析

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国际病毒学杂志 2024年第3期31卷 222-227页

作者：许静张宇琦杨进武王艳艳高文龙陈继军王宇红兰州市疾病预防控制中心艾滋病性病防制所 730030 兰州大学公共卫生学院流行病与卫生统计学研究所 730000 甘肃省平凉市泾川县疾病预防控制中心平凉744000

目的为了解兰州市医务人员的丙型肝炎(丙肝)防治知识知晓率,探索相关的影响因素,为制定兰州市丙肝防治工作提供科学依据。方法采用多阶段分层抽样方法,在所选择的医院中以科室为单位抽取临床医生进行调查。利用决策树模型和Logistic回... 详细信息

目的为了解兰州市医务人员的丙型肝炎(丙肝)防治知识知晓率,探索相关的影响因素,为制定兰州市丙肝防治工作提供科学依据。方法采用多阶段分层抽样方法,在所选择的医院中以科室为单位抽取临床医生进行调查。利用决策树模型和Logistic回归模型探索医务人员丙肝知识知晓率的影响因素。结果共收回有效问卷937份,兰州市医务人员的丙肝防治知识总知晓率为63.6%,其中丙肝防治基础知识知晓率为89.9%,丙肝防治专业知识知晓率仅为52.5%。丙肝知识知晓率的决策树模型生长层数为3层,共筛选出文化程度、年龄、最近一个月是否开过丙肝化验单和性别为显著的影响因素。Logistic回归模型筛选出5个影响因素,分别为文化程度、科室、最近一个月是否开过丙肝化验单、医院等级和医院类型(P<0.05)。结论兰州市医务人员的丙肝防治专业知识知晓率较低,文化程度、年龄、性别、科室、最近一个月是否开过丙肝化验单、医院等级和医院类型是其主要的影响因素,下一步应该加强对医务人员丙肝防治知识的培训。

关键词：丙型肝炎知晓率医务人员决策树分析 Logistic回归

Research on the sampling performance of a new bionic gravity sampler

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浙江大学学报(英文版)A辑:应用物理与工程 2023年第8期24卷 692-709页

作者： Yongqiang GE Jiamin HE Jin GUO Peihao ZhANG Hao wang Ziqiang REN Xiaoling LE Ying wang yuhong wang Jiawang CHEN Ocean College Zhejiang UniversityZhoushan 316021China Hainan Institute Zhejiang UniversitySanya 572025China The Engineering Research Center of Oceanic Sensing Technology and Equipment Ministry of EducationZhoushan 316021China

Gravity sampling is of vital importance for sampling seabed sediments and understanding submarine sedimentary environments and *** this study,a new bionic sampler tube(BST)with non-smooth surface for low-disturbance and rapid sampling is *** BST with depressions and swellings on its surface was designed on the model of the non-smooth surface of the dung *** theoretical calculations,numerical simulations,and experimental tests were carried out to study its sampling *** penetration depth,sample length,and frictional drag of the sampler tube were *** finite element model and the coupled Eulerian-Lagrangian(CEL)method were used to analyze and compare its sampling *** and field gravity sampling tests were conducted and the results demonstrated the advantages of the BST in improving sampling performance and in reducing adhesion and drag.

关键词： Deep-sea gravity sampling Bionic sampler tube(BST) Non-smooth surface Sampling performance Drag reduction

Paleodietary changes by penguins and seals in association with Antarctic climate and sea ice extent

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Chinese Science Bulletin 2014年第33期59卷 4456-4464页

作者： Tao Huang Liguang Sun yuhong wang Steven D.Emslie Institute of Polar Environment School of Earth and Space Sciences University of Science and Technology of China Department of Biology and Marine Biology University of North Carolina

Positioned near the top of the food web, the dietary composition of Antarctic penguins and seals can be an excellent indicator of the regional food web and thus the status of the marine ecosystem. The dietary composition of modern penguins and seals has been well investigated; a long-term time series of data on penguin and seal diets,however, are rare. Such data, especially any predating the initiation of human harvesting of fish, whales and seals in Antarctica, are crucial for understanding and predicting responses of regional marine food webs to natural climate changes. Here we review recent progress on research of paleodietary change in Antarctic penguins and seals, specifically the Ade′lie penguin(Pygoscelis adeliae) and Antarctic fur seal(Arctocephalus gazella). These studies indicate that the dietary changes of penguins correspond quite well with fluctuations in climate and sea ice extent during the Holocene. The depleted d15 N ratios found in modern Ade′lie penguins support the ‘‘krill surplus hypothesis' ' in relation to historic human depletion of krilleating fish, seals and whales.

关键词：气候变化海冰面积南极洲企鹅海豹海洋生态系统饮食结构食物网

SEMI-PROXIMAL POINT METHOD FOR NONSMOOTH CONVEX-CONCAVE MINIMAX OPTIMIZATION

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Journal of Computational Mathematics 2024年第3期42卷 617-637页

作者： yuhong Dai Jiani wang Liwei Zhang LSEC ICMSECAMSSChinese Academy of SciencesBeijing 100190China School of Mathematical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China School of Mathematical Sciences Dalian University of TechnologyDalian 116024China

Minimax optimization problems are an important class of optimization problems arising from modern machine learning and traditional research *** there have been many numerical algorithms for solving smooth convex-concave minimax problems,numerical algorithms for nonsmooth convex-concave minimax problems are *** paper aims to develop an efficient numerical algorithm for a structured nonsmooth convex-concave minimax problem.A semi-proximal point method(SPP)is proposed,in which a quadratic convex-concave function is adopted for approximating the smooth part of the objective function and semi-proximal terms are added in each *** construction enables the subproblems at each iteration are solvable and even easily solved when the semiproximal terms are cleverly *** prove the global convergence of our algorithm under mild assumptions,without requiring strong convexity-concavity *** the locally metrical subregularity of the solution mapping,we prove that our algorithm has the linear rate of *** numerical results are reported to verify the efficiency of our algorithm.

关键词： Minimax optimization Convexity-concavity Global convergence Rate of con-vergence Locally metrical subregularity

生物酶辅助提取橘皮色素及其对羊绒染色的性能

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现代纺织技术 2024年第3期32卷 73-80页

作者：陈秋霖朱秋昱周芳雨王宇弘陈超余志成浙江理工大学纺织科学与工程学院杭州310018 宁波康赛妮新纤维科技有限公司宁波315200

为扩宽天然染料色谱并利用废弃物染色,通过生物酶辅助醇水提取橘皮中的天然色素,并将该色素应用于羊绒染色,分析该色素对羊绒染色的性能。首先分别用纤维素酶、果胶酶以及两种酶的组合对橘皮进行提取,通过单因素试验,探讨生物酶用量、... 详细信息

为扩宽天然染料色谱并利用废弃物染色,通过生物酶辅助醇水提取橘皮中的天然色素,并将该色素应用于羊绒染色,分析该色素对羊绒染色的性能。首先分别用纤维素酶、果胶酶以及两种酶的组合对橘皮进行提取,通过单因素试验,探讨生物酶用量、乙醇浓度、提取温度、提取时间对提取效果的影响;然后采用橘皮色素对羊绒进行直接染色发现日晒牢度为2级,进一步研究提高日晒牢度的方法,实验结果表明用金属媒染剂、单宁-金属复合媒染剂、固色剂M对染色后羊绒进行后处理,以提高橘皮色素染色羊绒的耐日晒色牢度、耐皂洗色牢度。结果表明:橘皮色素最佳提取工艺为生物酶用量1%(o.w.f),其中纤维素酶和果胶酶质量比为2∶1,乙醇质量分数50%,提取温度80℃,提取时间100 min,料液比1∶20。橘皮色素对羊绒染色具有较高的K/S值,耐皂洗色牢度和耐日晒色牢度可达3级以上。从废弃物中提取天然染料色素,有着较高的应用价值和附加价值,为废弃资源再利用提供了一条有效途径。

关键词：橘皮色素生物酶提取单宁-金属复合媒染剂染色羊绒

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Modulation mechanism of electron energy dissipation on superlubricity based on fluorinated 2D ZIFs

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Nano Research 2024年第4期17卷 3198-3209页

作者： Yuxin Li Lei Liu Kunpeng wang yuhong Liu State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China School of Mechatronic Engineering Shanghai UniversityShanghai 200444China

Electron energy dissipation is an important energy dissipation pathway that cannot be ignored in friction ***-dimensional zeolite imidazole frameworks(2D ZIFs)and fluorine doping strategies give 2D Zn-ZIF and 2D Co-ZIF unique electrical properties,making them ideal materials for studying electron energy dissipation *** this paper,based on the superlubricity modulation of 2D fluoridated ZIFs,the optimal tribological properties are obtained on the 2D F-Co-ZIF surface,with the friction coefficient as low as *** experiments,density functional theory(DFT)simulation,and fluorescence detection are used to explain the mechanism of fluorine doping regulation of tribological properties from the two stages,namely energy transfer and energy ***,the energy will transfer into the friction system through the generation of electron–hole pairs under an external excitation,and release by radiation and non-radiation energy dissipation *** reduces energy transfer by altering the electronic properties and band structures of ZIFs,and slows down the charge transfer by enhancing the shielding efficiency,thus slowing the non-radiative energy dissipation rate during the energy release *** insights not only help us better understand the role of fluorine doping in improving tribological properties,but also provide a new way to further explore the electron energy dissipation pathway during friction.

关键词： superlubricity electron energy dissipation modulation two-dimensional zeolite imidazole frameworks(2D ZIFs) fluorination

不同消毒方式对特殊药材连作土壤理化性质、酶活性及微生物群落的影响

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山东农业科学 2024年第2期56卷 86-94页

作者：高正睿宿翠翠王玉红张兆萍施志国魏玉杰甘肃省农业工程技术研究院/甘肃省特种药源植物种质创新与安全利用重点实验室甘肃武威733006

为探讨特殊药材连作土壤对不同消毒方式的响应,试验设置T1(棉隆)、T2(棉隆+微生物菌剂)、T3(石灰氮)、T4(石灰氮+微生物菌剂)、T5(微生物菌剂)、CK(清水)6个处理,利用Illumina MiSeq高通量测序平台,研究不同药剂处理对土壤养分、酶活、... 详细信息

为探讨特殊药材连作土壤对不同消毒方式的响应,试验设置T1(棉隆)、T2(棉隆+微生物菌剂)、T3(石灰氮)、T4(石灰氮+微生物菌剂)、T5(微生物菌剂)、CK(清水)6个处理,利用Illumina MiSeq高通量测序平台,研究不同药剂处理对土壤养分、酶活、微生物多样性及群落结构的影响。结果表明:T4和T5处理显著提高了土壤脲酶、蔗糖酶和中性磷酸酶的活性;显著提高土壤细菌丰富度与多样性,T2、T4和T5处理可以显著提高土壤真菌丰富度与多样性;土壤细菌群落优势菌门为变形菌门、酸杆菌门、芽单胞菌门,T3和T4处理显著提高有益菌群鞘氨醇单胞菌属的相对丰度,所有处理均提高了有益菌群马赛菌属的相对丰度;土壤真菌群落优势菌门为子囊菌门、接合菌门、担子菌门,所有处理均降低了被孢霉属的相对丰度,T1和T2处理显著降低了致病菌群镰刀菌属的相对丰度;pH值、全氮、水解性氮等理化性质的改变是影响连作土壤微生物群落的重要因素。综上,不同消毒方式处理一定程度上改善了连作土壤养分供应,影响了根际土壤细菌和真菌的群落结构。研究结果可为进一步阐明特殊药材连作障碍的发生机理提供依据。

关键词：土壤消毒连作土壤酶活性土壤微生物群落特殊药材

Primary analysis of QTG contribution to heterosis in upland cotton

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Chinese Science Bulletin 2010年第26期55卷 2956-2965页

作者： ZHANG XianLiang LIU Fang wang Wei LI ShaoHui wang ChunYing ZHANG XiangDi wang yuhong wang KunBo Cotton Research Institute Chinese Academy of Agricultural Sciences Key Laboratory of Cotton Genetic Improvement Ministry of Agriculture of People's Republic of China Anyang 455000 China Kaifeng Research Academy of Agriculture and Forestry Key Laboratory of Agriculture Biological Breeding Kaifeng 475141 China Yanhai District Agricultural Research Institute of Jiangsu Province Yancheng 224002 China

In this paper, we analyzed the contribution of pure DNA factors to heterosis using quantitative trait genes (QTG) in two randomly selected strains from a recombinant inbred line of Gossypium hirsutum. According to a set of QTL mapping results, combined with analysis of DNA recombinant fragment sources in the two strains and QTL association analysis with their field traits, we hypothesize a view of "dominance + overdominance + epistasis". That is, additive and additive epistasis may be the genetic basis of heterosis, and dominance, overdominance and epistasis may be the modes of heterosis action. Based on the heterosis results of this study, we also suggest a molecular mechanism for heterosis, and explain, in detail, with two randomly selected strains as examples. The male and female parent-derived additive epistatic QTLs of upper half mean length in LG01 and LG03 produced a trait variance of 2.99-3.52 compared with the female parent-derived loci. The trait of bolls per plant was controlled by two pairs of additive epistatic QTLs in LG02 and LG07, which were derived from both female and male parents. The QTLs were reciprocally interacted and produced a trait variance of 0.86. An initial concept of "super-hybrid cotton" was raised according to the nature of additive effect, that is genetic stability.

关键词：杂种优势利用陆地棉 QTL定位数量性状基因重组自交系显性上位遗传基础随机选择