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Effect of inorganic arsenic in paddy soil on the migration and transformation of selenium species in rice plants

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Journal of Environmental Sciences 2024年第9期143卷 35-46页

作者： Ganga Raj Pokhrel Kaiteng Wang Kaiyang Ying Yongchen Wu Ze Wang Xi Zhu Can Qu Hong Li Fengfu Fu guidi Yang Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring Key Laboratory for Medicinal Plant Chemistry and Chemical BiologyCollege of JunCao Science and EcologyFujian Agriculture and Forestry UniversityFuzhou 350002China Department of Chemistry Birendra Multiple CampusTribhuvan UniversityChitwan 00977-44200BharatpurNepal Key Laboratory for Analytical Science of Food Safety and Biology of Ministry of Education Fujian Provincial Key Lab of Analysis and Detection for Food SafetyCollege of ChemistryFuzhou UniversityFuzhou 350116China

Selenium(Se)in paddy rice is one of the significant sources of human Se ***,the effect of arsenic(As)pollution in soil on the translocation of Se species in rice plants is *** this research,a pot experiment was designed to examine the effect of the addition of 50 mg As/kg soil as arsenite or arsenate on the migration of Se species from soil to indica Minghui 63 and *** results showed that the antagonism between inorganic As and Se was closely related to the rice cultivar and Se oxidation state in *** to the standalone selenate treatment,arsenite significantly(p<0.05)decreased the accumulation of selenocystine,selenomethionine and selenate in the roots,stems,sheaths,leaves,brans and kernels of both cultivars by 21.4%-100.0%,40.0%-100.0%,41.0%-100%,5.4%-96.3%,11.3%-100.0% and 26.2%-39.7% respectively,except for selenocystine in the kernels of indica Minghui 63 and selenomethionine in the leaves of indica Minghui 63 and the stems of indica *** also decreased(p<0.05)the accumulation of selenocystine,selenomethionine and selenate in the roots,stems,brans and kernels of both cultivars by 34.9%-100.0%,30.2%-100.0%,11.3%-100.0% and 5.6%-39.6%respectively,except for selenate in the stems of indica Minghui ***,relative to the standalone selenite treatment,arsenite and arsenate decreased(p<0.05)the accumulation of selenocystine,selenomethionine and selenite only in the roots of indica Minghui 63 by 45.5%-100.0%.Our results suggested that arsenite and arsenate had better antagonism toward Se species in selenate-added soil than that in selenite-added soil;moreover,arsenite had a higher inhibiting effect on the accumulation of Se species than arsenate.

关键词： Rice(Oryza sativa L.) Inorganic arsenic Selenium species Translocation Antagonistic effect

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文学阐释学:文化研究的挑战及其视域拓展

广州大学学报（社会科学版） 2024年第5期23卷 27-36页

作者：颜桂堤福建师范大学文学院福建福州350007

20世纪以来,众多新型理论观念纵横驰骋于文学阐释场域之中,持续制造了巨大的理论震荡。文化研究的崛起,不仅对文学阐释学构成了巨大的理论挑战,同时也为其发展赢得了开阔的阐释视野和强大的思想能量。文化研究的多元阐释观念和阐释方法... 详细信息

20世纪以来,众多新型理论观念纵横驰骋于文学阐释场域之中,持续制造了巨大的理论震荡。文化研究的崛起,不仅对文学阐释学构成了巨大的理论挑战,同时也为其发展赢得了开阔的阐释视野和强大的思想能量。文化研究的多元阐释观念和阐释方法同时也诱发出“过度阐释”“强制阐释”等问题。文化研究究竟是一种“强制阐释”,抑或是对阐释的有效拓展?显然,并不能将文化研究简单等同于“强制阐释”,辩证看待二者的关系意义重大。文化研究表明,强大的阐释能力对当代中国文学阐释学的理论更新和话语重构提供了有益的启示,展现出前所未有的活力。一方面,文化研究不仅推动了当代学界对文学阐释学的批判性反思;另一方面,文化研究促使我们将意义问题和文学阐释学置于更广阔的知识谱系中加以考察,进而推进当代中国文学阐释学的话语体系建设。

关键词：文学阐释学文化研究理论挑战强制阐释视域拓展话语重构

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Comparative Study of Solar PV Power Plant Dimensionnement Connected to Network Based on Monofacial and Bifacial Modules

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Journal of Environmental Science and Engineering(A) 2024年第1期13卷 36-44页

作者： DJOSSOU Ayihaou Armand VODOUNNOU Edmond Claude FANNOU Jean Louis Comlan DANSOU MidokpêRomuald SEMASSOU Guy Clarence HOUNGAN Comlan Aristide guidi Tognon Clotilde Thierno Amadou Barry Laboratory of Processes and Technological Innovation(LaPIT)/National Higher Institute of Industrial Technology(INSTI)of Lokossa/UNSTIM PB 133-Lokossa(Benin) Laboratory of Energetics and Applied Mechanics(LEMA)/Polytechnic School of Abomey-Calavi(EPAC)/UAC 01 PB 2009-Cotonou(Benin) National Higher School of Energy and Process Engineering(ENSGEP)of Abomey/UNSTIM National Higher School of Technical Education(ENSET)of Lokossa/UNSTIM 不详

This article presents the results of comparative study of two PV solar modules technologies,namely monofacial and *** study main objective is to identify conditions and parameters that make it possible to obtain better energy and economic efficiency from one or other of two *** study reason lies in revival observed on bifacial module in recent years where all the major manufacturers of PV solar panels are developing them where in a few years,this technology risks being at the same price as the monofacial solar panel with better *** indicator used is energy levelized cost(LCOE)which is function technology type,energy productivity,annual investment and operation *** achieve this,a 3.685 MWc solar PV power plant was dimensioned and simulated under Matlab for a 3.5 ha site with a 2,320,740,602 FCFA budget for monofacial installation,against 1,925,188,640 FCFA for 2.73 MWc bifacial *** LCOE comparative analysis of two technologies calculated over a period of 25 years,showed that plant with bifacial panels is more beneficial if bifacial gain is greater than 9%.It has further been found that it is possible to gain up to 40%of invested cost if bifacial gain reaches 45%.Finally,a loss of about 10%of invested cost could be recorded if bifacial gain is less than 9%.

关键词： Solar PV power plant Sizing Monofacial panels Bifacial panels LCOE.

Impacts of Oceanic Fronts and Eddies in the Kuroshio-Oyashio Extension Region on the Atmospheric General Circulation and Storm Track

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Advances in Atmospheric Sciences 2022年第1期39卷 22-54页

作者： guidi ZHOU Xuhua CHENG Key Laboratory of Marine Hazards Forecasting Ministry of Natural Resources(MNR)Hohai UniversityNanjing 210098China College of Oceanography Hohai UniversityNanjing 210098China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China

This paper reviews the progress in our understanding of the atmospheric response to midlatitude oceanic fronts and eddies,emphasizing the Kuroshio-Oyashio Extension(KOE)*** perturbations of interest consist of sharp oceanic fronts,temperature anomalies associated with mesoscale eddies,and to some extent even higher-frequency submesoscale *** focus is on the free atmosphere above the boundary *** the midlatitude atmosphere is dominated by vigorous transient eddy activity in the storm track,the response of both the time-mean flow and the storm track is *** storm track response arguably overwhelms the mean-flow response and makes the latter hard to detect from *** frontal impacts on the mesoscale structures of individual synoptic storms are discussed,followed by the role of oceanic fronts in maintaining the storm track as a *** fronts exhibit significant decadal variability and can therefore presumably modulate the storm *** studies are summarized and *** understanding has advanced greatly but is still subject to large uncertainties arising from inadequate data resolution and other *** modeling studies highlighted the importance of mesoscale eddies and probably even submesoscale processes in maintaining the storm track but confirmation and validation are still ***,the atmospheric response can potentially provide a feedback mechanism for the North Pacific *** reviewing the above aspects,we envision that future research shall focus more upon the interaction between smaller-scale oceanic processes(fronts,eddies,submesoscale features)and atmospheric processes(fronts,extratropical cyclones etc.),in an integrated way,within the context of different climate background states.

关键词： atmospheric response storm track oceanic front mesoscale eddy submesoscale Kuroshio-Oyashio Extension

An overview of proven Climate Change Vulnerability Assessment tools for forests and forest-dependent communities across the globe：a literature analysis

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Journal of Forestry Research 2018年第5期29卷 1167-1175页

作者： Caterina guidi Giovanni Di Matteo Stefano Grego Faculty of Law University of New South Wales SydneyNSW 2052 Australia Council for Agricultural Research and Economics (CREA) Research Centre for Agriculture and Environment00184 Rome Italy Centro Interuniversitario di Ricerca Per lo SviluppoSostenibile (CIRPS) 00184 Rome Italy

Climate Change Vulnerability Assessment（VA） tools for forest ecosystems and forest-dependent communities are important for making decisions and understanding the impact of climate change on both social and natural ***,the tools are poorly coordinated,making it difficult for policymakers to carry out VAs *** aim of this study was to analyze VA literature worldwide to find representative case studies in terms of methods and tools applied and which have been successful in performing VAs on forests and forest-dependent *** successful VA studies analyzed had common characteristics such as significant funding,data availability and technical *** additional characteristic was the development of an integrated approach that considered the vulnerability of both ecosystems and communities by combining qualitative and quantitative *** members and relevant stakeholders were significantly involved in a participatory process that concluded with the identification of adaptation *** case studies also revealed how policymakers need to choose suitable methods and tools to undertake efficient assessment of *** need to consider several aspects of the VA process such as subject matter,availability of resources,time and scale.

关键词： Vulnerable forest ecosystems Bibliographic analysis Forest-based community Policy-maker decision supporting Adaptation actions

Arsenic methylation by an arsenite S-adenosylmethionine methyltransferase from Spirulina platensis

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Journal of Environmental Sciences 2016年第11期28卷 162-168页

作者： Yuqing Guo Ximei Xue Yu Yan Yongguan Zhu guidi Yang Jun Ye Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring College of Life Sciences Fujian Agriculture and Forestry University Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

Arsenic-contaminated water is a serious hazard for human health. Plankton plays a critical role in the fate and toxicity of arsenic in water by accumulation and *** platensis（S. platensis）, a typical plankton, is often used as a supplement or feed for pharmacy and aquiculture, and may introduce arsenic into the food chain, resulting in a risk to human health. However, there are few studies about how S. platensis biotransforms arsenic. In this study, we investigated arsenic biotransformation by S. platensis. When exposed to arsenite（As（Ⅲ））, S. platensis accumulated arsenic up to 4.1 mg/kg dry *** exposure to As（Ⅲ）, arsenate（As（Ⅴ）） was the predominant species making up 64% to86% of the total arsenic. Monomethylarsenate（MMA（Ⅴ）） and dimethylarsenate（DMA（Ⅴ））were also detected. An arsenite S-adenosylmethionine methyltransferase from S. platensis（Sp Ars M） was identified and characterized. Sp Ars M showed low identity with other reported Ars M enzymes. The Escherichia coli AW3110 bearing Spars M gene resulted in As（Ⅲ） methylation and conferring resistance to As（Ⅲ）. The in vitro assay showed that Sp Ars M exhibited As（Ⅲ） methylation activity. DMA（Ⅴ） and a small amount of MMA（Ⅴ） were detected in the reaction system within 0.5 hr. A truncated Sp Ars M derivative lacking the last 34 residues still had the ability to methylate As（Ⅲ）. The three single mutants of Sp Ars M（C59S, C186 S, and C238S） abolished the capability of As（Ⅲ） methylation, suggesting the three cysteine residues are involved in catalysis. We propose that Sp Ars M is responsible for As methylation and detoxification of As（Ⅲ） and may contribute to As biogeochemistry.

关键词： Spirulina platensis Arsenic Methylation Methyltransferase

Glucagon-like peptide-2 analogues for Crohn’s disease patients with short bowel syndrome and intestinal failure

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World Journal of Gastroenterology 2022年第44期28卷 6258-6270页

作者： Marco Pizzoferrato Pierluigi Puca Sara Ennas Giovanni Cammarota Luisa guidi UOC Gastroenterologia Dipartimento di Scienze Mediche e ChirurgicheFondazione Policlinico Universitario Agostino Gemelli IRCCSRome 00168Italy Dipartimento di Medicina e Chirurgia Traslazionale UniversitàCattolica del Sacro CuoreRome 00168Italy

Short bowel syndrome(SBS)with intestinal failure(IF)is a rare but severe complication of Crohn’s disease(CD),which is the most frequent benign condition that leads to SBS after repeated surgical resections,even in the era of biologics and small ***-like peptide-2 analogues have been deeply studied recently for the treatment of *** drugs have a significant intestinotrophic effect and the potential to reduce the chronic dependence of SBSIF patients on parenteral support or *** has been approved for the treatment of SBS-IF,and apraglutide is currently in clinical *** use of these drugs was examined with a focus on their use in CD patients.

关键词： Short bowel syndrome Intestinal failure Crohn’s disease Glucagon-like peptide-2 analogues Teduglutide Apraglutide Glepaglutide

Diff erences in pigment circadian rhythmicity in greenand red-leafed tree species in the sun and shade

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Journal of Forestry Research 2023年第3期34卷 693-704页

作者： Ermes Lo Piccolo Giulia Lauria Giulia Bongi Lucia guidi Marian Brestic Damiano Remorini Rossano Massai Marco Landi Department of Agriculture Food and EnvironmentUniversity of PisaVia del Borghetto 8052124 PisaItaly Centre for Climate Change Impact CIRSECUniversity of PisaVia del Borghetto 8052124 PisaItaly Department of Plant Physiology Slovak University of AgricultureA.Hlinku 2Nitra 94976Slovakia

Light fl ux and quality are crucial factor for setting endogenous plant circadian *** the daily rhythmicity of leaf chlorophyll content is an eff ective method to monitor the plant physiological endogenous clock in response to environmental signals such as light availability/***,we used a leaf-clip sensor to monitor diurnal rhythms in the content of chlorophyll and fl avonoids such as fl avonols and anthocyanins in three green-(Ailanthus altissima,Tilia platyphyllos and Platanus×acerifolia)and two red-leafed(Acer platanoides *** King and Prunus cerasifera ***)tree species,adapted to sun(L)or shade(S).Signifi cant diff erences in chlorophyll content(Chl)and its variations during the day were observed among treatments in all the analyzed species.S-plants had more Chl than L-plants irrespective of leaf color,and Chl variations were more distinct during the day than in *** particular,contents were lowest in the morning(9:00)and in the middle of the day(at 12:00 and 15:00),and the highest at dusk(21:00).The less evident trends in Chl variation in L-plants were attributed to a decrease in Chl content in high light,which likely masked any increases in the shaded counterparts during the *** fl avonol levels did not vary no notably during the *** sun-exposed red leaves,anthocyanins partially screened mesophyll cells from incident light,and its levels were similar to the Chl dynamics in the shaded *** study provides new bases for further work on endogenous rhythms of plant pigments and improves our understanding of plant physiology in the context of day/night rhythmicity.

关键词： Anthocyanins Chlorophylls Circadian clock Flavonols Shade syndrome

脑机接口结合外骨骼机器手对脑梗死患者手功能障碍的闭环康复效果

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实用医学杂志 2024年第17期40卷 2395-2400页

作者：邹贵娣陈小凯谭卉虹李翊李楠曹叶凡王鹤玮惠州市第三人民医院康复医学科广东惠州516002 复旦大学华山医院康复医学科上海200040

目的观察基于闭环干预理论的脑机接口结合外骨骼机器手训练对脑梗死患者手功能恢复的疗效,并分析患者认知功能和内在运动想象能力对脑机接口识别率的影响。方法选取50例脑梗死患者,随机分配至观察组和对照组,每组各25例。两组患者均... 详细信息

目的观察基于闭环干预理论的脑机接口结合外骨骼机器手训练对脑梗死患者手功能恢复的疗效,并分析患者认知功能和内在运动想象能力对脑机接口识别率的影响。方法选取50例脑梗死患者,随机分配至观察组和对照组,每组各25例。两组患者均接受常规康复项目,观察组在此基础上额外接受脑机接口闭环康复训练。治疗前后比较两组患者的Fugl-Meyer运动功能量表上肢部分(FMA-UE)、手臂动作调查测试(ARAT)、WOLF运动功能评定(WMFT)和腕指屈肌肌张力的改良Ashworth评分(MAS)。干预前使用心理旋转测试和蒙特利尔认知评估量表(MoCA)判断观察组患者基线内在运动想象能力和认知能力,分析影响脑机接口闭环康复疗效的相关因素。结果两组患者治疗前各评分差异均无统计学意义(P> 0.05),干预后观察组FMA-UE、ARAT及WMFT的评分均较对照组提高,腕指屈肌MAS评分较对照组有所下降,差异有统计学意义(均P <0.05)。此外,脑机接口识别通过率与心理旋转试验正确率、MoCA认知功能评分呈正相关(P <0.05),与心理旋转试验反应时间呈负相关(P <0.05)。结论基于闭环干预理论的脑机接口结合外骨骼机器手可以促进脑梗死患者上肢和手运动功能的恢复。同时,进行脑机接口干预前应对患者的内在运动想象能力以及认知功能进行筛查,以筛选适合接受训练的患者。

关键词：脑梗死脑机接口外骨骼机器手手功能障碍运动想象