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Liquid crystal immunosensors for the selective detection of Escherichia coli with a fast analysis tool

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Photonics Research 2024年第7期12卷 1564-1573页

作者： SANDRO C.OLIVEIRA MARIA S.SOARES BÁRBARA V.GONÇALVES ANDREIA C.M.RODRIGUES AMADEU M.V.M.SOARES RITA G.SOBRAL NUNO F.SANTOS jan NEDOMA PEDRO L.ALMEIDA CARLOS MARQUES CICECO-Aveiro Institute of Materials Physics DepartmentUniversity of Aveiro3810-193 AveiroPortugal i3N Physics DepartmentUniversity of Aveiro3810-193 AveiroPortugal Associate Laboratory i4HB-Institute for Health and Bioeconomy School of Sciences and TechnologyNOVA University of Lisbon1099-085 LisbonPortugal CESAM-Centre for Environmental and Marine Studies and Department of Biology University of Aveiro3810-193 AveiroPortugal Department of Telecommunications VSB-Technical University of OstravaOstrava 70800Czech Republic i3N-CENIMAT School of Sciences and TechnologyNOVA University of Lisbon1099-085 LisbonPortugal UnIRE ISELPolytechnic Institute of Lisbon1549-020 LisbonPortugal Department of Physics VSB-Technical University of OstravaOstrava 70800Czech Republic

The consumption of contaminated food may cause serious illnesses,and traditional methods to detect Escherichia coli are still associated with long waiting times and high costs given the necessity to transport samples to specialized *** is a need to develop new technologies that allow cheap,fast,and direct monitoring at the site of ***,in this work,we developed optical immunosensors for the selective detection of ***,based on liquid crystal technology,whose molecules can align in different manners depending on the boundary conditions (such as substrates) as well as the environment that they *** glass substrate was functionalized with *** antibody using cysteamine as an intermediate,and a vertical alignment was imposed on the liquid crystal molecules by using DMOAP during *** presence of bacteria disrupts the alignment of the liquid crystal molecules,changing the intensity of light emerging between cross polarizers,measured using a polarized optical microscope and a *** was possible to detect *** in suspensions in the concentration range from 2.8 cells/mL to 2.8×10^(9) cells∕*** was also evaluated,and the sensors were used to analyze contaminated water samples.A prototype was developed to allow faster,in-situ,and easier analysis avoiding bulky instruments.

关键词： crystal alignment analysis

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如何选择兼顾价值创造与激励的绩效指标

中国管理会计 2024年第1期 107-116页

作者： jan Bouwens 王玮坤(译) 宿文迪(译) 阿姆斯特丹商学院中欧国际工商学院

不恰当的绩效指标设计会损害企业价值,而合适的绩效指标可以指引和激励管理者创造价值。本文以分权制管理下的大型石油化工集团为例,讨论了企业分部绩效指标设计应考虑的问题。绩效考核指标的选择需要尽量满足一致性、灵敏度和精确度要... 详细信息

不恰当的绩效指标设计会损害企业价值,而合适的绩效指标可以指引和激励管理者创造价值。本文以分权制管理下的大型石油化工集团为例,讨论了企业分部绩效指标设计应考虑的问题。绩效考核指标的选择需要尽量满足一致性、灵敏度和精确度要求。完美的绩效指标并不存在,分权制管理下的企业集团需要考虑分部指标和集团目标的一致性,采用能及时、准确体现不同分部管理者贡献的指标。与晋升和奖金高度相关的指标也要强化监管,避免操控和舞弊。

关键词：绩效指标设计指标一致性指标灵敏度指标相关性指标操纵

亚热带山地森林木质藤本和共生树木枝条和叶片性状的分化

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Journal of Plant Ecology 2024年第1期17卷 17-32页

作者： Xiao-Long Bai Da Yang jan Sher Yun-Bing Zhang Ke-Yan Zhang Qi Liu Han-Dong Wen Jiao-Lin Zhang Martijn Slot CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunMengla 666303China University of Chinese Academy of Sciences Beijing 100049China Forest Ecology and Forest Management Group Wageningen University and Research Centre6700 AA WageningenThe Netherlands Yuanjiang Savanna Ecosystem Research Station Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYuanjiang 653300China Smithsonian Tropical Research Institute Apartado 0843-03092BalboaAnconRepublic of Panama

因缺少性状的比较,我们对亚热带山地森林木质藤本和树木的与生态适应策略有关的功能性状变异格局仍知之甚少。本文通过研究中国西南亚热带山地森林中不同叶片习性的33种植物(7种落叶和4种常绿木质藤本、10种落叶和12种常绿树木)的13个... 详细信息

因缺少性状的比较,我们对亚热带山地森林木质藤本和树木的与生态适应策略有关的功能性状变异格局仍知之甚少。本文通过研究中国西南亚热带山地森林中不同叶片习性的33种植物(7种落叶和4种常绿木质藤本、10种落叶和12种常绿树木)的13个性状的分化来填补此空白。研究结果表明,木质藤本的枝条木质部导管直径、理论导水率、比叶面积、叶片氮和磷含量显著高于树木,但其叶片干物质含量和氮磷比显著低于同域分布的树木,表明木质藤本采取获取的生态策略,具有更高效的枝条导水系统和生产力更强的叶片。与树木相比,木质藤本的导管直径变异更大,同时具有一些大导管和很多小导管,说明木质藤本具有较大的导管二型性。生长型解释了性状总变异的48.7%,叶片习性仅解释了3.8%的总变异,生长型和叶片习性之间没有显著的交互作用。此外,枝叶性状仅在树木中存在显著相关,木质藤本中不存在,表明亚热带木质藤本枝条的水力功能与叶片的性状是解耦的。上述结果表明,亚热带山地木质藤本和树木的枝条和叶片功能性状存在显著差异。加强对亚热带山地生态系统中木质藤本和树木生态策略差异机制的认识还需要深入研究。

关键词：功能性状叶片习性叶片形态木质藤本亚热带山地森林木质部解剖

Haplotype-based phylogenetic analysis and population genomics uncover the origin and domestication of sweetpotato

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Molecular Plant 2024年第2期17卷 277-296页

作者： Mengxiao Yan Ming Li Yunze Wang Xinyi Wang M-Hossein Moeinzadeh Dora G.Quispe-Huamanquispe Weijuan Fan Yijie Fang Yuqin Wang Haozhen Nie Zhangying Wang Aiko Tanaka Bettina Heider jan F.Kreuze Godelieve Gheysen Hongxia Wang Martin Vingron Ralph Bock Jun Yang Shanghai Key Laboratory of Plant Functional Genomics and Resources Shanghai Chenshan Botanical GardenShanghai 201602China College of Life Sciences Chongqing Normal UniversityChongqing 401331China Biotechnology and Nuclear Technology Research Institute Sichuan Academy of Agricultural SciencesChengdu 610061China College of Life Sciences Shanghai Normal UniversityShanghai 200234China Department of Computational Molecular Biology Max Planck Institute for Molecular GeneticsIhnestraBe 63-7314195 BerlinGermany Department of Biotechnology Ghent University9000 GhentBelgium Guangdong Provincial Key Laboratory of Crops Genetics and Improvement Crop Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510640China Graduate School of Bioagricultural Sciences Nagoya UniversityChikusaNagoya 464-8601Japan international Potato Center(CIP) LimaPeru CAS Center for Excellence of Molecular Plant Sciences Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200233China Max-Planck-Institut fur Molekulare Pflanzenphysiologie Am Muhlenberg 114476 Potsdam-GolmGermany

The hexaploid sweetpotato(lpomoea batatas)is one of the most important root crops ***,its genetic origin remains controversial,and its domestication history remains *** this study,we used a range of genetic evidence and a newly developed haplotype-based phylogenetic analysis to identify two probable progenitors of *** diploid progenitor was likely closely related to lpomoea ae-quatoriensis and contributed the B,subgenome,IbT-DNA2,and the lineage 1 type of chloroplast genome to *** tetraploid progenitor of sweetpotato was most likely *** 4x,which donated the B2 subgenome,IbT-DNA1,and the lineage 2 type of chloroplast *** most likely originated from reciprocal crosses between the diploid and tetraploid progenitors,followed by a subsequent whole-genome *** addition,we detected biased gene exchanges between the subgenomes;the rate of B,to B2 subgenome conversions was nearly three times higher than that of B2 to B subgenome *** analyses revealed that genes involved in storage root formation,maintenance of genome stabil-ity,biotic resistance,sugar transport,and potassium uptake were selected during the speciation and domestication of *** study sheds light on the evolution of sweetpotato and paves the way forimprovementofthiscrop.

关键词： sweetpotato origin gene conversion domestication IbT-DNA HPA

Tigris River Water Quality Quantifying Using the Iraq Water Quality Index (IraqWQI) and Some Statistical Techniques

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Engineering（科研） 2024年第6期16卷 149-166页

作者： Nadhir Al-Ansari Salam Hussein Ewaid Ali Chabuk Salwan Ali Abed Mudhafar A. Salim jan Laue Riyadh M. Salih Department of Civil Environmental and Natural Resources Engineering Lule University of Technology Lule Sweden Technical College of Shatra Southern Technical University Basra Iraq Department of Environmental Engineering College of Engineering University of Babylon Babylon Iraq Department of Environment College of Science University of Al-Qadisiyah Diwaniyah Iraq Iraqi Organization for Conservation of Nature IOCN Baghdad Iraq National Center for Water Resources Management Ministry of Water Resources Baghdad Iraq

Evaluation of water quality is important for the management of water resources. The current study is focused on the interpretation of the water quality monitoring data of the Tigris River in Iraq by the application of the principal component analysis (PCA), cluster analysis (CA), and water quality index (WQI). Twelve water quality parameters were taken from 14 stations along the river Ca2+, Mg2+, Na+, K+, Cl−, SO42−, HCO3−, NO3−, TH, TDS, BOD5, and EC to apply the PCA and CA. The results show that the mean of all the parameters was under the standards except Ca2+, EC, Mg2+, TH, and SO42−. The amount of EC is the critical factor that affects the river water quality. The PCA obtained one principal component responsible for 97% of the variation caused by different pollution sources. The CA divided the river into three regions of sampling stations with similar water quality, the best in the north, and the worst in the far south. In this paper, the computer-automated tool (IraqWQI) was presented and evaluated, which has been developed by authors to classify and measure the quality of Iraqi surface water. The proposed index is of hundred degrees and includes six variables for drinking water quality Cl−, TH, TDS, COD, DO, and total coliform (TC) according to the Iraqi specifications. The result of the IraqWQI application showed a decrease in the water quality of the river and its suitability for drinking in the south of the country. The best value of the index was (81.48, Good) in Fishkhabour during winter, and the worst value was (46.23, Bad) in Qurnah during summer. The result of this study proved the success and importance of using statistical techniques and WQI as useful tools for the management, control, and conservation of surface water. .

关键词： Component Formatting Style Styling

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共情考试

科学新闻 2024年第4期 59-60页

作者： jan Philipp R?er 倪伟波德国维藤/黑尔德克大学

“哦，现在我明白了。”同事说，“这就是你在考试上这么努力的原因。”在与一位同事共进午餐时，我分享了自己多年前作为一名患有考试焦虑症的学生所经历的挣扎。她的话让我有点吃惊，但让我开始思考，为什么从7年前开始当教授以来，...

“哦，现在我明白了。”同事说，“这就是你在考试上这么努力的原因。”在与一位同事共进午餐时，我分享了自己多年前作为一名患有考试焦虑症的学生所经历的挣扎。她的话让我有点吃惊，但让我开始思考，为什么从7年前开始当教授以来，我一直把缓解学生考试前的紧张放在首位。我意识到她可能是有道理的：作为学生的经历有助于我理解作为一名教授能做些什么让口试尽可能透明、公平和包容。这需要一些额外的工作，但是值得。

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约旦十日谈《一千零一夜》深处的中东世界

环球人文地理 2024年第5期 114-123页

作者：孙琳 jan 颜描锦丁逸峰艾行户外

毗邻死海和红海，这个中东国家在风与沙的雕琢下瑰丽多变，置身其中仿佛来到异世界。多种文化在此交融共生，它如同《一千零一夜》的故事原型，日夜山海皆精彩。1亚喀巴迷失在月亮谷的沙漠与银河人们将瓦迪拉姆称作“月亮谷”，因为这...

毗邻死海和红海，这个中东国家在风与沙的雕琢下瑰丽多变，置身其中仿佛来到异世界。多种文化在此交融共生，它如同《一千零一夜》的故事原型，日夜山海皆精彩。1亚喀巴迷失在月亮谷的沙漠与银河人们将瓦迪拉姆称作“月亮谷”，因为这里像月球表面一样宁静沉寂。但此刻，铺展在我眼前的广袤沙漠、线条流畅的山体，以及风化如同城堡般的岩石，分明就像火星。

关键词：

昆虫生理中短神经肽F的功能研究进展（英文）

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第5期 389-410页

作者： Marcin CHOLEWI?SKI Szymon CHOWA?SKI jan LUBAWY Arkadiusz URBA?SKI Karolina WALKOWIAK-NOWICKA Pawe? MARCINIAK 亚当密茨凯维奇大学生物学院动物生理学和发育生物学系

短神经肽F(sNPF)肽家族是参与调控昆虫体内各种生理过程的多功能神经激素。它们广泛分布于生物体中，但前体分子中的异构体数量因物种而异，从一个到四个不等。sNPF受体（sNPFR）属于G蛋白偶联受体家族，在多种昆虫目中已有表征，并被... 详细信息

短神经肽F(sNPF)肽家族是参与调控昆虫体内各种生理过程的多功能神经激素。它们广泛分布于生物体中，但前体分子中的异构体数量因物种而异，从一个到四个不等。sNPF受体（sNPFR）属于G蛋白偶联受体家族，在多种昆虫目中已有表征，并被证明是哺乳动物泌乳素释放肽受体（PrPR）的同源物。sNPF信号通路通过与其他神经激素（例如类胰岛素肽、SIFamide和色素分散因子（PDFs））的相互作用以调控多种生理过程。其主要生理功能涉及摄食的调节，但观察到的效应因物种而异。sNPF还与觅食行为和嗅觉系统的调节相关。其对摄食及能量代谢的影响还可能间接影响其他重要过程，例如繁殖和发育。此外，这些神经激素还参与昆虫的运动活动和昼夜节律的调节。本文回顾并总结了昆虫中sNPF系统的现阶段研究进展。

关键词：昆虫神经肽无脊椎动物神经生物学短神经肽F(sNPF) 摄食神经激素

不同类型橡胶园间作对竹芋生产力、经济效益和净温室气体排放的影响

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西南农业学报 2024年第6期37卷 1239-1246页

作者：黄坚雄魏元姁董天站潘剑王秀全中国热带农业科学院橡胶研究所海口570102 省部共建国家重点实验室培育基地-海南省热带作物栽培生理学重点实验室海口571101 农业农村部儋州热带作物科学观测试验站海南詹州571737 中国农业大学三亚研究院海南三亚572025

【目的】构建和发展橡胶农林复合模式提高综合产出和生态效益,为保障海南省天然橡胶种植业可持续发展提供参考。【方法】以淀粉作物竹芋(Maranta arundinacea L.)为对象,在幼龄常规胶园(6龄)、幼龄(6龄)和成龄(20龄)的全周期胶园中进行... 详细信息

【目的】构建和发展橡胶农林复合模式提高综合产出和生态效益,为保障海南省天然橡胶种植业可持续发展提供参考。【方法】以淀粉作物竹芋(Maranta arundinacea L.)为对象,在幼龄常规胶园(6龄)、幼龄(6龄)和成龄(20龄)的全周期胶园中进行间作,从光照、土壤养分、生产力、经济效益和温室气体排放方面,综合分析竹芋在不同类型胶园中的适宜性。【结果】幼龄常规胶园间作的光照条件最差,间作竹芋产量仅4750 kg/hm^(2),而幼龄和成龄全周期胶园中间作区域的光照条件较好,产量分别为27470和11190 kg/hm^(2),不同处理之间存在显著差异(P<0.05)。不同间作处理竹芋的生物量亦呈相同趋势。不同处理竹芋的营养成分(淀粉、粗蛋白和可溶性糖)总体上无显著变化。幼龄和成龄全周期胶园间作竹芋的经济效益分别为86185和9285元/hm^(2),而在幼龄常规胶园中间作则为-21415元/hm^(2)。从净温室气体排放方面看,仅幼龄全周期胶园间作竹芋处理为温室气体的汇(368 kg/hm^(2)),而其他两种处理则为温室气体的源。【结论】幼龄的全周期胶园间作竹芋具有最佳的生产力和经济效益,同时能兼顾一定的生态效益,是海南省适宜的橡胶农林复合模式。

关键词：橡胶农林复合模式竹芋生产力经济和生态效益