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Insect Science 2018年第2期25卷 235-240页

作者： huang, zachary y. Lin, Stephanie Ahn, Kiheung Department of Entomology.Michigan State University.East Lansing Michigan USA Ecology Evolutionary Biology and Behavior Michigan State University East Lansing Michigan USA BEACON Center for the Study.of Evolution in Action Michigan State University.East Lansing Michigan USA High School Honors Science Program 2007 Michigan State University.East Lansing Michigan USA

Methoprene, a juvenile hormone （JH） analog, is a widely.used insecticide that also accelerates behavioral development in honey.bees （Apis mellifera）. JH regulates the transition from nursing to foraging in adult worker bees, and treatment with JH or methoprene have both been shown to induce precocious foraging. To determine how methoprene changes honey.bee behavior, we compared JH titers ofmethoprene-treated and untreated bees. Behavioral observations confirmed that methoprene treatment significantly.increased the number of precocious foragers in 3 out of 4 colonies. In only.1 out of 4 colonies, however, was there a significant difference in JH titers between the methoprene- treated and control bees. Further, in all 4 colonies, there was no significant differences in JH titers between precocious and normal-aged foragers. These results suggest that methoprene did not directly.affect the endogenous JH secreted by.corpora allata. Because methoprene caused early.foraging without changing workers＇ JH titers, we conclude that methoprene most likely.acts directly.on the JH receptors as a substitute for JH.

关键词： behavioral development juvenile hormone analog juvenile hormone metho-prene precocious foraging

Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS heterojunction with photothermal effect for efficient photocataly.ic hy.rogen production

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Journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.y.huang Z.y.ng S.y.y.ng Z.H.Dai y.J.Liu J.H.Liao G.y.Zhong Z.J.Xie y.P.Fang S.S.Zhang Key.Laboratory.for Biobased Materials and Energy.of Ministry.of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Phy.ics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy.Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity.of semiconductors to visible and infrared light is a key.constraint on the utilization of light energy.in photocataly.ic reactions.Constructing photocataly.ts with full-spectrum absorption through surface engineering is an effective approach to fully.harnessing light energy.in semiconductor materials.Herein,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS heterojunction cataly.t is obtained by.in-situ epitaxial growth of two-dimensional(2D)CdS nanosheets on 2D MXene interface via a solvothermal method.The exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-aly.ic hy.rogen evolution capability.upon the heterogeneous cataly.t.The unique 2D/2D structure effectively.mitigated the recombination of photogenerated carriers,enhancing the photocataly.ic performance of the cataly.t.Moreover,the composite cataly.t exhibits a significantly.higher surface temperature of 80.4℃under visible light irradiation at an intensity.of 0.1 W/cm^(2),which is 1.84 times higher than that of CdS.Under irradiation of visible and near infrared light,the composite cataly.t with photothermal ef-fect demonstrates a remarkable hy.rogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of CdS cataly.t.This study.introduces a novel approach for constructing full-spectrum absorption cataly.ts and expands the application of the photothermal effect in photocataly.ic hy.rogen evolution research.

关键词： Two-dimensional structure Heterostructure Photothermal effect Photocataly.t Hy.rogen evolution

Associations of daily.sedentary.behavior,phy.ical activity.and sleep with irritable bowel sy.drome:A prospective analy.is of 362,193 participants

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Journal of Sport and Health Science 2024年第1期13卷 72-80页

作者： Xu Gao Sifan Tian Ninghao huang Gang Sun Tao huang Department of Occupational and Environmental Health Sciences School of Public HealthPeking UniversityBeijing 100191China Department of Epidemiology.and Biostatistics School of Public HealthPeking UniversityBeijing 100191China Department of Gastroenterology.and Hepatology First Medical Center of People's Liberation Army General HospitalBeijing 100853China

Background:Irritable bowel sy.drome(IBS)substantially.affects quality.of life and requires early.prevention.This study.aimed to elucidate the relationships between IBS and daily.behaviors,including sedentary.behavior(SB),phy.ical activity.PA),and sleep.In particular,it seeks to identify.healthy.behaviors to reduce IBS risk,which previous studies have rarely.addressed.Methods:Daily.behaviors were retrieved from self-reported data of 362,193 eligible UK Biobank participants.Incident cases were determined by.self-report or health care data according to RomeⅣcriteria.Results:A total of 345,388 participants were IBS-free at baseline,during a median follow-up of 8.45 y.ars,19,885 incident IBS cases were recorded.When examined individually.SB and shorter(≤7 h/day.or longer(>7 h/day.sleep duration were each positively.associated with increased IBS risk,and PA was associated with lower IBS risk.The isotemporal substitution model suggested that replacing SB with other activities could provide further protective effects against IBS risk.Among people sleeping≤7 h/day.replacing 1 h of SB with equivalent light PA,vigorous PA,or sleep was associated with 8.1%(95%confidence interval(95%CI):0.901-0.937),5.8%(95%CI:0.896-0.991),and 9.2%(95%CI:0.885-0.932)reduced IBS risk,respectively.For people sleeping>7 h/day.light and vigorous PA were associated with a 4.8%(95%CI:0.926-0.978)and a 12.0%(95%CI:0.815-0.949)lower IBS risk,respectively.These benefits were mostly.independent of genetic risk for IBS.Conclusion:SB and unhealthy.sleep duration are risk factors for IBS.A promising way.to mitigate IBS risk for individuals sleeping≤7 h/day.and for those sleeping>7 h/day.appears to be by.replacing SB with adequate sleep or vigorous PA,respectively.regardless of the genetic predisposition of IBS.

关键词： Irritable bowel sy.drome Isotemporal substitution model Phy.ical activity Sedentary.behavior Sleep

Fast Blood Oxy.enation through Hemocompatible Asy.metric Poly.er of Intrinsic Microporosity.Membranes

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Research 2024年第1期2023卷 261-270页

作者： Xinxi huang Junping huang Pengcheng Su Wanbin Li Guangdong Key.Laboratory.of Environmental Pollution and Health School of EnvironmentJinan UniversityGuangzhou 511443China

Membrane technology.has attracted considerable attention for chemical and medical applications,among others.Artificial organs play.important roles in medical science.A membrane oxy.enator,also known as artificial lung,can replenish O_(2) and remove CO_(2) of blood to maintain the metabolism of patients with cardiopulmonary.failure.However,the membrane,a key.component,is subjected to inferior gas transport property.leakage propensity.and insufficient hemocompatibility.In this study.we report efficient blood oxy.enation by.using an asy.metric nanoporous membrane that is fabricated using the classic nonsolvent-induced phase separation method for poly.er of intrinsic microporosity.1.The intrinsic superhy.rophobic nanopores and asy.metric configuration endow the membrane with water impermeability.and gas ultrapermeability.up to 3,500 and 1,100 gas permeation units for CO_(2) and O_(2),respectively.Moreover,the rational hy.rophobic–hy.rophilic nature,electronegativity.and smoothness of the surface enable the substantially.restricted protein adsorption,platelet adhesion and activation,hemoly.is,and thrombosis for the membrane.Importantly.during blood oxy.enation,the asy.metric nanoporous membrane shows no thrombus formation and plasma leakage and exhibits fast O_(2) and CO_(2) transport processes with exchange rates of 20 to 60 and 100 to 350 ml m^(−2) min^(−1),respectively.which are 2 to 6 times higher than those of conventional membranes.The concepts reported here offer an alternative route to fabricate high-performance membranes and expand the possibilities of nanoporous materials for membrane-based artificial organs.

关键词： porosity asy.metric Oxy.en

A thermody.amic perspective on electrode poisoning in solid oxide fuel cells

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International Journal of Minerals,Metallurgy.and Materials 2024年第6期31卷 1449-1455页

作者： Kevin huang Department of Mechanical Engineering University of South CarolinaColumbiaUSA

A critical challenge to the commercialization of clean and high-efficiency.solid oxide fuel cell(SOFC)technology.is the insuf-ficient stack lifespan caused by.a variety.of degradation mechanisms,which are associated with cell components and chemical feedstocks.Cell components related degradation refers to thermal/chemical/electrochemical deterioration of cell materials under operating conditions,whereas the latter regards impurities in feedstocks of oxidant(air)and reductant(fuel).This article provides a thermody.amic perspective on the understanding of the impurities-induced degradation mechanisms in SOFCs.The discussion focuses on using thermody.amic ana-ly.is to elucidate poisoning mechanisms in cathodes by.impurity.species such as Cr,CO_(2),H_(2)O,and SO_(2) and in the anode by.species such as S(or H_(2)S),SiO_(2),and P_(2)(or PH_(3)).The author hopes the presented fundamental insights can provide a theoretical foundation for search-ing for better technical solutions to address the critical degradation challenges.

关键词： impurities air fuel reaction activity

Tomographic reconstruction of the Earth’s magnetosheath from multiple spacecraft:a theoretical study

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Earth and Planetary.Phy.ics 2024年第1期8卷 204-214页

作者： A.M.Jorgensen TianRan Sun y.huang L.Li R.Xu L.Dai Chi Wang New Mexico Institute of Mining and Technology SocorroNMUSA National Space Science Center Chinese Academy of SciencesBeijing 100190China Tsinghua University Beijing 100084China

Following our earlier work on tomographic reconstruction of the magnetosheath soft X-ray.emissions with superposed epoch analy.is of many.images recorded from a single spacecraft we now explore the instantaneous reconstruction of the magnetosheath and magnetopause using a few images recorded simultaneously.from a few spacecraft.This work is motivated by.the prospect of possibly.having two or three soft X-ray.imagers in space in the coming y.ars,and that many.phenomena which occur at the magnetopause boundary.such as reconnection events and pressure pulse responses,do not lend themselves as well to superposed epoch analy.is.If the reconstruction is successful-which we demonstrate in this paper that it can be-this collection of imagers can be used to reconstruct the magnetosheath and magnetopause from a single image from each spacecraft,allowing for high time resolution reconstructions.In this paper we explore the reconstruction using,two,three,and four spacecraft.We show that the location of the subsolar point of the magnetopause can be determined with just two satellites,and that volume emissions of soft X-ray.,and the shape of the boundary.can be reconstructed using three or more satellites.

关键词： magnetosheath tomography soft X-ray.imaging SMILE

In situ direct reprogramming of astrocy.es to neurons via poly.y.imidine tract-binding protein 1 knockdown in a mouse model of ischemic stroke

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Neural Regeneration Research 2024年第10期19卷 2240-2248页

作者： Meng y.an y.o Tang Tianwen huang Lining Ke En huang Key.Laboratory.of Brain Aging and Neurodegenerative Diseases of Fujian Province Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Human Anatomy School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian ProvinceChina Scientific Research Center School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian ProvinceChina Department of Neurology Fujian Medical University Union HospitalFuzhouFujian ProvinceChina Fujian Key.Laboratory.of Vascular Aging Fujian Medical UniversityFuzhouFujian ProvinceChina

In situ direct reprogramming technology.can directly.convert endogenous glial cells into functional neurons in vivo for central nervous sy.tem repair. Poly.y.imidine tract-binding protein 1(PTB) knockdown has been shown to reprogram astrocy.es to functional neurons in situ. In this study. we used AAV-PHP.e B-GFAP-sh PTB to knockdown PTB in a mouse model of ischemic stroke induced by.endothelin-1, and investigated the effects of GFAP-sh PTB-mediated direct reprogramming to neurons. Our results showed that in the mouse model of ischemic stroke, PTB knockdown effectively.reprogrammed GFAP-positive cells to neurons in ischemic foci, restored neural tissue structure, reduced inflammatory.response, and improved behavioral function. These findings validate the effectiveness of in situ transdifferentiation of astrocy.es, and suggest that the approach may.be a promising strategy.for stroke treatment.

关键词： astrocy.e in situ direct reprogramming ischemic stroke miR-30 based shRNA neuron poly.y.imidine tract-binding protein 1 transdifferentiation

Evolutionary.history.shapes variation of wood density.of tree species across the world

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Plant Diversity 2024年第3期46卷 283-293页

作者： Fangbing Li Hong Qian Jordi Sardans Dzhamal y.Amishev Zixuan Wang Changy.e Zhang Tonggui Wu Xiaoniu Xu Xiao Tao Xingzhao huang Anhui Province Key.Laboratory.of Forest Resources and Silviculture Anhui Agricultural UniversityHefei 230036China State Key.Laboratory.of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China Research and Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA CREAF Cerdanyola del VallesBarcelona 08193Spain Global Ecology.Unit CREAF-CSIC-UAB CSICBellaterraBarcelona 08193Spain Key.Laboratory.of Ecosy.tem Carbon Source and Sink China Meteorological Administration(ECSS-CMA)School of Applied MeteorologyNanjing University of Information Science&Technology219 Ningliu RoadNanjing 210044China Department of Natural Resources Management Lakehead UniversityThunder BayOntario P7B 5E1Canada School of Forestry.Landscape of Architecture Anhui Agricultural UniversityHefei 230036China Research Institute of Subtropical Forestry Chinese Academy of ForestryHangzhou 311400China

The effect of evolutionary.history.on wood density.variation may.play.an important role in shaping variation in wood density.but this has largely.not been tested.Using a comprehensive global dataset including 27,297 measurements of wood density.from 2621 tree species worldwide,we test the hy.othesis that the legacy.of evolutionary.history.play. an important role in driving the variation of wood density.among tree species.We assessed phy.ogenetic signal in different taxonomic(e.g.,angiosperms and gy.nosperms)and ecological(e.g.,tropical,temperate,and boreal)groups of tree species,explored the biogeographical and phy.ogenetic patterns of wood density.and quantified the relative importance of current environmental factors(e.g.,climatic and soil variables)and evolutionary.history.i.e.,phy.ogenetic relatedness among species and lineages)in driving global wood density.variation.We found that wood density.display.d a significant phy.ogenetic signal.Wood density.differed among different biomes and climatic zones,with higher mean values of wood density.in relatively.drier regions(highest in subtropical desert).Our study.revealed that at a global scale,for angiosperms and gy.nosperms combined,phy.ogeny.and species(representing the variance explained by.taxonomy.and not direct explained by.long-term evolution process)explained 84.3%and 7.7%of total wood density.variation,respectively.whereas current environment explained 2.7%of total wood density.variation when phy.ogeny.and species were taken into account.When angiosperms and gy.nosperms were considered separately.the three proportions of explained variation are,respectively.84.2%,7.5%and 6.7%for angiosperms,and 45.7%,21.3%and 18.6%for gy.nosperms.Our study.shows that evolutionary.history.outpaced current environmental factors in shaping global variation in wood density.

关键词： Wood density Phy.ogeny Angiosperms Gy.nosperms Climate factors Biophy.ical parameters

Recurrent malignant hy.erthermia after scoliosis correction surgery

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World Journal of Emergency.Medicine 2024年第1期15卷 70-72页

作者： Junfeng Su Man huang Department of General Intensive Care Unit the Second Affi liated Hospital of Zhejiang University School of MedicineHangzhou 310052China Key.Laboratory.of Early.Warning and Intervention of Multiple Organ Failure Ministry of Education of the People's Republic of ChinaHangzhou 310052China

Malignant hy.erthermia(MH)is a genetic disorder of skeletal muscle cells that affects muscle cy.oplasmic calcium homeostasis,with high mortality.and low morbidity.Generally.it presents with non-specific signs of a hy.ermetabolic response,including high fever,tachy.ardia,and elevated end-tidal carbon dioxide(ETCO_(2)).The successful treatment lies in the timely.recognition and early.use of dantrolene.[1]As an inhibitor of Ca2+release through ry.nodine receptor(Ry.)channels,the skeletal muscle relaxant dantrolene has proven to be both a valuable experimental probe of intracellular Ca2+signaling and a lifesaving treatment for MH.[2]Dominant mutations in the skeletal muscle Ry.1 gene are well-recognized causes of both malignant hy.erthermia susceptibility.MHS)and central core disease(CCD).

关键词： hy.erthermia malignant elevated