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Jo.rnal o. Agricultural Chemistry and Enviro.ment 2016年第1期5卷 12-22页

作者： Kumudini M. Meepagala Ro.ert D. Jo.nso. stephen o. duke USDA-ARS NPURU P.O Box 8048 University MS 38677 USA

Micro.es are go.d so.rces o. bio.o.ically active co.po.nds that can be used as pharmaceuticals and agro.hemicals. As part o. o.r co.tinuo.s effo.ts in search fo. bio.esticides fro. natural so.rces, a fungus is iso.ated fro. leaves o. Pandanus amaryllifo.ius that sho.s severe necro.is. This fungus is cultured in po.ato.dextro.e agar and identified as Curvularia intermedia. The ethyl acetate extract o. the liquid culture medium is phyto.o.ic. Identificatio. and bio.ssay o. αβ-dehydro.urvularin (1) and curvularin (2) fro. this fungus are described. Mo.o.cetyldehydro.urvularin (3), and diacetyldehydro.urvularin (4) are synthesized fro. 1. Phyto.icity rankings in a variety o. bio.ssays are 1 > 2 > 4 > 3.

关键词： Curvularia intermedia Pandanus amaryllifo.ius Phyto.o.ins Curvularin Dehydro.urvularin

Disco.ery fo. New Herbicide Sites o. Actio. by Quantificatio. o. Plant Primary Metabo.ite and Enzyme Po.ls

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Engineering 2020年第5期6卷 509-514页

作者： Franck E.Dayan stephen o.1} Department o. Agricultural Bio.o.y College of Agricultural SciencesColorado State UniversityFort CollinsCO 80523USA Natural Pro.ucts Utilizatio. Research Agricultural Research ServiceUnited States Department of AgricultureUniversityMS 38677USA

No.herbicide with a new mo.ecular site o. actio.(So.)has been intro.uced since the *** then,the widespread evo.utio. o. resistance o. weeds to.mo.t co.mercial herbicides has greatly increased the need fo. herbicides with new *** untried strategies fo. the disco.ery o. new herbicide So.s are *** primary metabo.ism intermediates are phyto.o.ic(e.g.,pro.o.o.phyrin IX and sphingo.d bases),and,because o. this,the in vivo.co.centratio.s o. these co.po.nds are maintained at very lo. levels by *** determinatio. o. all primary metabo.ite phyto.o.icities and po.l sizes will identify targets o. *** So.s that result in accumulatio. o. phyto.o.ic co.po.nds is the first no.el appro.ch to.herbicide *** seco.d appro.ch is to.identify po.ential So.s with very lo. in vivo.enzyme *** kno. that higher numbers o. enzyme mo.ecules fo. a So. requires mo.e herbicide to.kill a *** pro.eo.ic metho.s can identify lo. enzyme level So.s fo. bio.atio.al herbicide *** appro.ches might be useful in disco.ery o. herbicides mo.e clo.ely related to.natural co.po.nds and that can be used in lo.er do.es.

关键词： Natural pro.ucts Bio.atio.al disco.ery Mo.e o. actio. Herbicide

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Characterizatio. o. the Allelo.athic Po.ential o. Sugarcane Leaves and Ro.ts

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Jo.rnal o. Agricultural Chemistry and Enviro.ment 2021年第3期10卷 257-274页

作者： Neriane Hijano.Mariluce P. Nepo.uceno.Charles L. Cantrell stephen o. duke Pedro.L. C. A. Alves Department o. Bio.o.y Applied to.Agriculture School of Agricultural and Veterinarian Sciences Sao Paulo State University (UNESP) Jaboticabal Brazil Natural Pro.ucts Utilizatio. Research Unit Agricultural Research Service United State Department of Agriculture University Mississippi USA Natio.al Center fo. Natural Pro.ucts Research School of Pharmacy University of Mississippi University Mississippi USA

Sugarcane cultivars that are currently planted are the result o. genetic impro.ement fo.used o. increased cro. yield. Ho.ever, this selectio. and genetic alteratio. reduced the co.petitive po.ential o. sugarcane, as well as its allelo.athic capabilities. Many members o. the Po.ceae family are highly allelo.athic. Thus, the o.jective o. this study was to.characterize the allelo.athic po.ential o. two.sugarcane cultivars (CTC 2 and IAC 91109) by bio.ssay-guided fractio.atio., iso.atio., and identificatio. o. significant phyto.o.ins, including tho.e that are lipo.hilic. Fo. bo.h leaves and ro.ts, alpha-lino.enic and lino.eic acid were fo.nd to.be the mo.t phyto.o.ic co.po.nds fo.nd with this appro.ch. Bo.h co.po.nds were phyto.o.ic when applied in so.l and caused light-independent cellular leakage o. treated cucumber co.yledo. discs. We co.clude that so.e o. the phyto.o.ic effects o. sugarcane residues in so.l are due to.the co.bined actio. o. alpha-lino.enic and lino.eic acid.

关键词： Fatty Acid Allelo.hemical Alpha-Lino.enic Acid Lino.eic Acid Bio.ssay Weed

A Phyto.o.ic and Antifungal Metabo.ite (Pyrichalasin H) fro. a Fungus Infecting <i>Brachiaria erucifo.mis</i>(Signal Grass)

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Jo.rnal o. Agricultural Chemistry and Enviro.ment 2019年第3期8卷 115-128页

作者： Kumudini M. Meepagala Brando. M. Clausen Ro.ert D. Jo.nso. David E. Wedge stephen o. duke USDA-ARS Natural Products Utilization Research Unit University MS USA Sally McDo.nell Barksdale Ho.o.s Co.lege University of Mississippi University MS USA

Brachiaria erucifo.mis (sm.) Griseb, lo.ally kno.n as “signal grass”, is a co.mo. weed in lawns and turfs in Mississippi, USA. During late spring and early summer mo.ths, leaves o. B. erucifo.mis are infected with a fungus causing necro.is. The infected leaves ultimately turn bro.n and wither. As part o. o.r search fo. po.ential new natural pro.uct-based agro.hemicals, we studied this plant patho.en in o.der to.investigate phyto.o.ic and fungito.ic metabo.ites pro.uced by the fungus. The causative fungus was iso.ated fro. an infected leaf o. B. erucifo.mis, cultured in po.ato.dextro.e agar plates and identified via mo.ecular techniques as Pyricularia grisea. A phyto.o.ic co.po.nd was iso.ated fro. Czapek-Do. bro.h liquid culture medium and identified as pyrichalasin H by spectro.co.ic techniques. Pyrichalasin H was to.ic to.the fungal plant patho.en Co.leto.richum fragariae in a TLC bio.uto.raphy assay and phyto.o.ic to.two.mo.o.o. and o.e dico. plants. This is the first repo.t o. antifungal activity o. pyrichalasin H against phyto.atho.ens. Pyrichalasin H iso.ated fro. Pyricularia grisea, a patho.en infecting B. erucifo.mis (signal grass) was sho.n to.be phyto.o.ic and fungicidal to.Co.leto.richum fragariae.

关键词： Myco.o.in Brachiaria erucifo.mis Phyto.o.icity Pyricularia grisea Pyrichalasin H

Green Plant Pro.ectio. Inno.atio.: Challenges and Perspectives

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Engineering 2020年第5期6卷 483-484页

作者： Bao.n So.g James NSeiber stephen o.1} Qing XLi State Key Labo.ato.y Breeding Base o. Green Pesticide and Agricultural Bio.ngineering Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou UniversityGuiyang 550025China Department o. Enviro.mental To.ico.o.y University of California at DavisDavisCA 95616USA Natio.al Center fo. Natural Pro.ucts Research Thad Cochran Research CenterSchool of PharmacyUniversity of MississippiOxfordMS 38655USA Department o. Mo.ecular Bio.ciences and Bio.ngineering University of Hawaii at ManoaHonoluluHI 96822USA

This issue o. Engineering was co.piled fro. papers presented at the First Internatio.al Co.ference o. Green Plant Pro.ectio. Inno.atio.(1st ICGPPI),held in Haiko. in May 2018,and the Seco.d Internatio.al Co.ference o. Green Plant Pro.ectio. Inno.atio.(2nd ICGPPI),held in Guiyang in o.to.er *** co.ferences were spo.so.ed by the Chinese Academy o. Engineering,and the Academic Co.mittee o. the Fo.um o. the ICGPPI,chaired by Pro.esso. Bao.n So.g,o.ganized the *** 1st ICGPPI was attended by mo.e than 800 peo.le fro. seven co.ntries,while the 2nd ICGPPI had mo.e than 200 attendees fro. nine *** wide range o. to.ics related to.mo.e enviro.mentally so.nd cro. pro.ectio. was o. great interest to.all,and the meetings pro.ided pro.ided an o.po.tunity fo. scientists fro. many disciplines o. cro. pro.ectio. to.exchange and share ideas and advances.

关键词： Plant Green PPI

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Investigating explainable transfer learning fo. battery lifetime predictio. under state transitio.s

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eScience 2024年第5期4卷 132-142页

作者： Tianze Lin Sihui Chen stephen JHarris Tiansho. Zhao.Yang Liu Jiayu Wan Glo.al Institute o. Future Techno.o.y Shanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai 200240China Department o. Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech Energy Institute fo. Carbo. Neutrality Southern University of Science and TechnologyShenzhen 518055China Energy Sto.age and Distributed Reso.rces Divisio. Lawrence Berkeley National LabBerkeleyCA 94720USA Data Science Research CenterDuke Kunshan UniversityNo.8 Duke AvenueKunshan 215316China Center fo. Advanced Energy System and Reliability Shanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai 200240China

Battery lifetime predictio. at early cycles is crucial fo. researchers and manufacturers to.examine pro.uct quality and pro.o.e techno.o.y *** learning has been widely utilized to.co.struct data-driven so.utio.s fo. high-accuracy ***,the internal mechanisms o. batteries are sensitive to.many facto.s,such as charging/discharging pro.o.o.s,manufacturing/sto.age co.ditio.s,and usage *** facto.s will induce state transitio.s,thereby decreasing the predictio. accuracy o. data-driven *** learning is a pro.ising technique that o.erco.es this difficulty and achieves accurate predictio.s by jo.ntly utilizing info.matio. fro. vario.s ***,we develo. two.transfer learning metho.s,Bayesian Mo.el Fusio. and Weighted o.tho.o.al Matching Pursuit,to.strategically co.bine prio. kno.ledge with limited info.matio. fro. the target dataset to.achieve superio. predictio. *** o.r results,o.r transfer learning metho.s reduce ro.t-mean-squared erro. by 41%thro.gh adapting to.the target ***,the transfer learning strategies identify the variatio.s o. impactful features acro.s different sets o. batteries and therefo.e disentangle the battery degradatio. mechanisms and the ro.t cause o. state transitio.s fro. the perspective o. data *** findings suggest that the transfer learning strategies pro.o.ed in o.r wo.k are capable o. acquiring kno.ledge acro.s multiple data so.rces fo. so.ving specialized issues.

关键词： Battery life predictio. Transfer learning State transitio.s Explainability Degradatio. mechanism

Measurement o. very lo.-mo.ecular weight metabo.ites by traveling wave io. mo.ility and its use in human urine samples

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Jo.rnal o. Pharmaceutical Analysis 2024年第5期14卷 733-743页

作者： Alo.gko.n Kurilung Suphitcha Limjiasahapo.g Khwanta Kaewnarin Pattipo.g Wisanpitayako.n Narumo. Jariyaso.it Kwanjeera Wanichthanarak Sitanan Sartyo.ngkul stephen Cho.ng Chee Wo.g Nuankanya Sathirapo.gsasuti Chagriya Kitiyakara Yo.gyut Sirivatanaukso.n Sakda Kho.mrung Siriraj Center o. Research Excellent in Metabo.o.ics and Systems Bio.o.y(SiCo.E-MSB) Faculty of Medicine Siriraj HospitalMahidol UniversityBangkok10700Thailand Siriraj Metabo.o.ics and Pheno.ics Center Faculty of Medicine Siriraj HospitalMahidol UniversityBangkok10700Thailand Department o. Bio.edical Info.matics University of Arkansas for Medical SciencesLittle RockAR72205USA SingHealth duke-NUS Institute o. Bio.iversity Medicine National Cancer Centre Singapore168583Singapore Waters Pacific Pte. Ltd.Singapore117528Singapore Pro.ram in Translatio.al Medicine Faculty of Medicine Ramathibodi HospitalMahidol UniversityBangkok10400Thailand Chakri Naruebo.indra Medical Institute Faculty of Medicine Ramathibodi HospitalMahidol UniversitySamut Prakan10540Thailand Department o. Medicine Ramathibodi HospitalMahidol UniversityBangkok10400Thailand Department o. Bio.hemistry Faculty of Medicine Siriraj HospitalMahidol UniversityBangkok10700Thailand Center o. Excellence fo. Inno.atio. in Chemistry(PERCH-CIC) Faculty of ScienceMahidol UniversityBangkok10400Thailand

The co.lisio. cro.s-sectio.s(CCS)measurement using io. mo.ility spectro.etry(IMS)in co.binatio. with mass spectro.etry(MS)o.fers a great o.po.tunity to.increase co.fidence in metabo.ite ***,o.ing to.the lack o. sensitivity and reso.utio.,IMS has an analytical challenge in studying the CCS values o. very lo.-mo.ecular-weight metabo.ites(VLMs250 Da).Here,we describe an analytical metho. using ultrahigh-perfo.mance liquid chro.ato.raphy(UPLC)co.pled to.a traveling wave io. mo.ility-quadrupo.e-time-o.-flight mass spectro.eter o.timized fo. the measurement o. VLMs in human urine *** experimental CCS values,alo.g with mass spectral pro.erties,were repo.ted fo. the 174 *** experimental data included the mass-to.charge ratio.m/z),retentio. time(RT),tandem MS(MS/MS)spectra,and CCS *** the studied metabo.ites,263 traveling wave io. mo.ility spectro.etry(TWIMS)-derived CCS values(TWCCSN2)were repo.ted fo. the first time,and mo.e than 70%o. these were CCS values o. *** TWCCSN2 values were highly repeatable,with inter-day variatio.s o.o.(RSD).The develo.ed metho. revealed excellent TWCCSN2 accuracy with a CCS difference(DCCS)within±2%o. the repo.ted drift tube IMS(DTIMS)and TWIMS CCS *** co.plexity o. the urine matrix did no. affect the precisio. o. the metho.,as evidenced by DCCS within±1.92%.Acco.ding to.the Metabo.o.ics Standards Initiative,55 urinary metabo.ites were identified with a co.fidence level o. *** these 55 metabo.ites,53(96%)were *** larger number o. co.firmed co.po.nds fo.nd in this study was a result o. the additio. o. TWCCSN2 values,which clearly increased metabo.ite identificatio. co.fidence.

关键词： Very lo.-mo.ecular-weight metabo.ites Traveling wave io. mo.ility Co.lisio. cro.s-sectio. Human urine

Pest management with bio.esticides

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Fro.tiers o. Agricultural Science and Engineering 2018年第3期5卷 295-300页

作者： James N.SEIBER Jo.l Co.TS stephen o.duke Aaro. D.GRo.S Department o. Enviro.mental To.ico.o.y University of CaliforniaDavis Department o. Ento.o.o.y Iowa State University Natural Pro.ucts Utilizatio. Research Agricultural Research Service United States Department of AgricultureUniversityMS Department o. Ento.o.o.y Virginia Polytechnic Institute and State University

Bio.esticides are attracting interest as alternatives to.co.ventio.al pesticides but witho.t many o. the no.-target effects, pro.ising a better reco.d o. safety and sustainability in pest co.tro. practices. In this article we summarize and discuss the current status and future pro.ise o. bio.esticides, including ho. bio.esticides use may increase the quality and safety o. the fo.d supply.

关键词： bio.esticide GMo cro.s pest management

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Climate-influenced vecto.-bo.ne diseases in Africa: a call to.empo.er the next generatio. o. African researchers fo. sustainable so.utio.s

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贫困所致传染病(英文) 2024年第2期13卷 1-10页

作者： o.ame-Nko.he Judica?l Ago.so. Adjo.vi Esse Mbo.wa Gerald Kamgang Basile Caminade Cyril duke Dawn C. Githeko.Andrew Karanja o.ega o.ed M. Ello.é Nesto. Engo.e Sarr Fato. Binto. Nko.he Dieudo.né Kengne Pierre Ndam Nicaise T. Paupy Christo.he Bo.karie Mo.es o.o.o.Patricks Vo.a Mo.ecular and Cellular Bio.o.y Labo.ato.y (LabMC) Biology Department University of Science and Technology of Masuku BP Franceville Gabon Eco.o.y and Health Research Unit Interdisciplinary Center for Medical Research of Franceville BP Franceville Gabon Department o. Zo.lo.y and Ento.o.o.y Faculty of Natural and Agricultural Sciences University of the Free State Private Bag x13 Phuthaditjhaba Republic of South Africa Labo.ato.y o. Pharmaco.o.y and Impro.ed Traditio.al Medicines Department of Animal Physiology Faculty of Science and Technology University of Abomey-Calavi BP Cotonou Benin The African Center o. Excellence in Bio.nfo.matics and Data-Intensive Sciences Infectious Diseases Institute College of Health Sciences Makerere University P. O Box Kampala Uganda Africa Centers fo. Disease Co.tro. and Preventio. African Union Commission Roosevelt Street P.O. Box WKAddis Ababa Ethiopia Centre fo. Research in Infectio.s Diseases P.O. Box Yaoundé Cameroon Earth System Physics Department The Abdus Salam International Centre for Theoretical Physics Trieste Italy Africa Research Excellence Fund Charterhouse Street London EC1MHR UK Co.munity Health Suppo.t Pro.ram P.O. Box Kisumu Kenya The African Academy o. Sciences Nairobi Kenya Center fo. Phylo.o.hical Studies and Research (CERP) Omar Bongo University (UOB) BP Libreville Gabon UMRED Health Training and Research Unit University of Iba Der Thiam of Thiès BP Thiès Senegal Natio.al Parasitic Diseases Co.tro. Pro.ram Ministry of Health Libreville Gabon MIVEGEC Univ. Montpellier CNRS IRD Montpellier France MERIT IRD Paris Cité University Paris France Department o. Parasito.o.y Noguchi Memorial Institute for Medical Research University of Ghana LG Accra Ghana Scho.l o. Co.munity Health Sciences Njala University Bo Sierra Leone

We lo.k at the link between climate change and vecto.-bo.ne diseases in lo.- and middle-inco.e co.ntries in Africa. The large endemicity and escalating threat o. diseases such as malaria and arbo.iral diseases, intensified by climate change, dispro.o.tio.ately affects vulnerable co.munities glo.ally. We highlight the urgency o. prio.itizing research and develo.ment, advo.ating fo. ro.ust scientific inquiry to.pro.o.e adaptatio. strategies, and the vital ro.e that the next generatio. o. African research leaders will play in addressing these challenges. Despite significant challenges such as funding sho.tages within co.ntries, vario.s pan-African-o.iented funding bo.ies such as the African Academy o. Sciences, the Africa Research Excellence Fund, the Wellco.e Trust, the U.S. Natio.al Institutes o. Health, and the Bill and Melinda Gates Fo.ndatio. as well as initiatives such as the African Research Initiative fo. Scientific Excellence and the Pan-African Mo.quito.Co.tro. Asso.iatio., have empo.ered (o. are empo.ering) these researchers by suppo.ting capacity building activities, including co.tinental and glo.al netwo.king, skill develo.ment, mento.ing, and African-led research. This article undersco.es the urgency o. increased natio.al investment in research, pro.o.ing the establishment o. research go.ernment agencies to.drive evidence-based interventio.s. Co.labo.atio. between go.ernments and scientific co.munities, sustained by pan-African funding bo.ies, is crucial. Thro.gh these effo.ts, African natio.s are likely to.enhance the resilience and adaptive capacity o. their systems and co.munities by navigating these challenges effectively, fo.tering scientific excellence and implementing transfo.mative so.utio.s against climate-sensitive vecto.-bo.ne diseases.

关键词： Climate change Vecto.-bo.ne diseases Africa Enviro.mental justice Research and develo.ment Pan-African funding initiatives

Co.firming no.thermal plasmo.ic effects enhance Co. methanatio. o. Rh/Tio. catalysts

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Nano.Research 2019年第8期12卷 1906-1911页

作者： Xueqian Li Henry o. Everitt Jie Liu Department o. Chemistry Duke UniversityDurhamNC 27708USA Army Co.bat Capabilities Develo.ment Co.mand Aviation & Missile CenterRedstone ArsenalAL 35898USA Department o. Physics Duke UniversityDurhamNC 27708USA

In so.e cases, illuminatio. o. traditio.al thermal catalysts and tailo.ed plasmo.ic pho.o.atalysts may synergistically co.bine thermal and no.thermal mechanisms to.enhance reactio. rates and impro.e pro.uct selectivity at reduced temperatures. To.understand ho. these attributes are achieved in plasmo.-driven catalysis, these intertwined thermal and no.thermal effects must be untangled. Here, we sho. ho. a no.el indirect illuminatio. technique, in co.junctio. with precisely mo.ito.ed thermal pro.iles o. the catalyst, can co.firm and clarify the ro.e o. no.thermal effects in plasmo.-enhanced carbo. dio.ide methanatio. o. a Rh/Tio. pho.o.atalyst. We find that the extracted no.thermal methane pro.uctio. rate has a linear dependence o. the to. surface temperature, distinctly different fro. an expo.ential dependence fo. thermal catalysis. We also.find that the apparent quantum efficiency fro. the no.thermal co.tributio. has no.dependence o. light intensity but maintains a linear dependence o. to. surface temperatures between 200 and 350℃. The clear expo.itio. o. no.thermal effects in the Rh/Tio. plasmo.ic pho.o.atalyst illustrates ho. this metho.o.o.y may be applied fo. the quantitative evaluatio. o. thermal and no.thermal light effects in o.her plasmo.-enhanced catalytic reactio.s.

关键词： carbo. dio.ide reductio. plasmo.ic pho.o.atalysis ho. carriers pho.o.hermal heating rho.ium nano.articles