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Satellite-enabled enviromics to enhance crop improvement

Molecular Plant 2024年第6期17卷 848-866页

作者： Rafael t.Resende lee Hickey Cibele H.Amaral lucas l.Peixoto Gustavo E.Marcatti Yunbi Xu Universidade Federal de Goia´s(UFG) Agronomy DepartmentPlant Breeding SectorGoiania(GO)74690-900Brazil theCROP a Precision-Breeding Startup:EnviromicsPhenomicsand GenomicsNo Zip-codeOperating VirtuallyGoiania(GO)and Sete Lagoas(MG)Brazil Queensland Alliance for Agriculture and Food Innovation The University of QueenslandBrisbaneQLDAustralia Earth lab Cooperative Institute for Research in Environmental SciencesUniversity of Colorado BoulderBoulderCO 80303USA Environmental Data Science Innovation&Inclusion lab Cooperative Institute for Research in Environmental SciencesUniversity of Colorado BoulderBoulderCO 80303USA Universidade Federal de Sa˜o Joa˜o del-Rei Forest Engineering DepartmentCampus Sete LagoasSete Lagoas(MG)35701-970Brazil Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Peking University Institute of Advanced Agricultural Sciences WeifangShandong 261325China BGI Bioverse Shenzhen 518083China

Enviromics refers to the characterization of micro-and macroenvironments based on large-scale environmental *** providing genotypic recommendations with predictive extrapolation at a site-specific level,enviromics could inform plant breeding decisions across varying conditions and anticipate productivity in a changing ***-based integration of statistics,envirotyping(i.e.,determining environmental factors),and remote sensing could help unravel the complex interplay of genetics,environment,and *** support this goal,exhaustive envirotyping to generate precise environmental profiles would significantly improve predictions of genotype performance and genetic gain in ***,informatics management platforms aggregate diverse environmental datasets obtained using optical,thermal,radar,and light detection and ranging(liDAR)sensors that capture detailed information about vegetation,surface structure,and *** wealth of information,coupled with freely available climate data,fuels innovative enviromics *** enviromics holds immense potential for breeding,a few obstacles remain,such as the need for(1)integrative methodologies to systematically collect field data to scale and expand observations across the landscape with satellite data;(2)state-of-the-art AI models for data integration,simulation,and prediction;(3)cyberinfrastructure for processing big data across scales and providing seamless interfaces to deliver forecasts to stakeholders;and(4)collaboration and data sharing among farmers,breeders,physiologists,geoinformatics experts,and programmers across research *** these challenges is essential for leveraging the full potential of big data captured by satellites to transform 21st century agriculture and crop improvement through enviromics.

关键词： envirotyping precision breeding genotype-environment interactions remote sensing predictive models enviromic information

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Modeling shoreline sand waves on the coasts of Namibia and Angola

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International Journal of Sediment Research 2013年第3期28卷 338-348页

作者： Francesca RIBAS Albert FAlQUES Niels van den berg Miquel CABAllERIA department of Applied Physics Universitat Politecnica de CatalunyaSpain

the southwestern（Sw） coast of Africa（Namibia and Angola） features long sandy beaches and a wave climate dominated by energetic swells from the Southsouthwest（SSw）,therefore approaching the coast with a very high *** images reveal that along that coast there are many shoreline sand waves with wavelengths ranging from 2 to 8 km.A more detailed study,including a Fourier analysis of the shoreline position,yields the wavelengths（among this range） with the highest spectral density ***,it becomes apparent that at least some of the sand waves are dynamically active rather than being controlled by the geological setting.A morphodynamic model is used to test the hypothesis that these sand waves could emerge as free morphodynamic instabilities of the coastline due to the obliquity in wave *** is found that the period of the incident water waves,t;,is crucial to establish the tendency to stability or instability,instability increasing for decreasing period,whilst there is some discrepancy in the observed *** results for t;= 7-8 s clearly show the tendency for the coast to develop free sand waves at about 4 km wavelength within a few years,which migrate to the north at rates of 0.2-0.6 km yr;.For larger t;or steeper profiles,the coast is stable but sand waves originated by other mechanisms can propagate downdrift with little decay.

关键词： Shoreline evolution Shoreline sand waves High angle wave instability longshore sediment transport

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Scientific guidelines for preclinical research on potentised preparations manufactured according to current pharmacopoeias-the PrePoP guidelines

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Journal of Integrative Medicine 2024年第5期22卷 533-544页

作者： Alexander l.tournier leoni V.Bonamin Susann Buchheim-Schmidt Steven Cartwright Christoph Dombrowsky Paul Doesburg Carla Holandino Maria Olga Kokornaczyk Everine Bvan de Kraats Jesús Antonio lópez-Carvallo Papiya Nandy JoséManuel Mazón-Suástegui Fateme Mirzajani Bernard Poitevin Claudia Scherr Karin thieves Sandra würtenberger Stephan Baumgartner Institute of Complementary and Integrative Medicine University of Bern3010 BernBernSwitzerland Institute of Integrative Medicine Witten/Herdecke University58455 WittenNorth Rhine–WestphaliaGermany Homeopathy Research Institute London SW74EFUnited Kingdom Graduate Program on Environmental and Experimental Pathology Paulista UniversitySão Paulo 01504-000São PauloBrazil department of Medical Science Deutsche Homöopathie-Union DHU-Arzneimittel GmbH&Co.KG76227 KarlsruheBaden-WürttembergGermany Cherwell laboratory for Fundamental Research in Homeopathy Oxford OX28NUOxforeshireUnited Kingdom Society for Cancer Research Hiscia Research Institute4144 ArlesheimBaselSwitzerland laboratório Multidisciplinar de Ciências Farmacêuticas Universidade Federal do Rio de JaneiroRio de Janeiro 21941-902Rio de JaneiroBrazil world water Community Rotterdam 3029AKthe Netherlands departamento de Acuicultura Facultad de Ciencias del MarUniversidad Católica del Norte1790437 CoquimboElquiChile Centre for Interdisciplinary Research and Education KolkataWest Bengal 700068West BengalIndia laboratorio de Homeopatía Acuícola y Semillas Marinas Centro de Investigaciones Biológicas del NoroesteLa Paz 23096Baja California SurMexico Protein Research Center Shahid Beheshti UniversityTehran ***Iran department of Medical laboratory Science College of ScienceKnowledge University44001 ErbilErbilIraq SociétéSavante d’Homéopathie 75009 ParisFrance Sola Salus Institute for Homeopathic Research52511 GeilenkirchenNorth Rhine–WestphaliaGermany Scientific Society for Homeopathy 06366 KöthenSaxony-AnhaltGermany

Objective Pharmacopoeias regulate the manufacture of potentised pharmaceutical preparations used in different branches of complementary and integrative *** physicochemical properties and biological activity of these preparations are often investigated in preclinical research,yet no guidelines for experimental research currently exist in this *** present PrePoP guidelines aim to provide recommendations to promote high-quality,statistically sound,and reproducible preclinical research on potentised *** Input was gathered from researchers nominated by the relevant scientific societies using a simplified delphi consensus approach covering the most relevant aspects of basic research methodology in the field including appropriate controls,sample preparation and handling,and *** three rounds of feedback,a consensus was finally reached on the most important aspects and considerations for conducting high-quality research on potentised *** we present a series of recommendations on a range of topics including experimental controls,system stability,blinding and randomisation,environmental influences,and procedures for the preparation of potentised samples and controls,and we address some specific challenges of this research *** this expert consensus process resulted in a robust set of methodological guidelines for research on potentised preparations and provides a valuable framework that will inform and improve the quality of subsequent research in this emerging field.

关键词： Research guidelines Fundamental research Basic research Complementary and integrative medicine Potentisation Potentised preparations

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Impact of black cherry on pedunculate oak vitality in mixed forests:Balancing benefits and concerns

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Forest Ecosystems 2023年第6期10卷 690-699页

作者： Ellen desie Bart Muys Jan den Ouden Bart Nyssen Rita Sousa-Silva leon van den berg Arnold van den Burg Gert-Jan van Duinen Koenraad van Meerbeek Maaike weijters Karen vancampenhout Division Forest Nature and LandscapeKU Leuven Campus GeelKleinhoefstraat 4B-2240 GeelBelgium Division Forest Nature and LandscapeKU LeuvenCelestijnenlaan 200EBox 2411B-3001 LeuvenBelgium KU leuven Plant Institute B-3001 LeuvenBelgium Forest Ecology and Management Group Wageningen UniversityP.O.Box 47Wageningenthe Netherlands Bosgroep Zuid-Nederland Huisvenseweg 145591 VD Heezethe Netherlands Young Academy for Sustainability Research University of Freiburg79104 Freiburg im BreisgauGermany Aquatic Ecology&Environmental Biology Radboud University NijmegenHeyendaalseweg 1356525 AJ Nijmegenthe Netherlands Biosphere/Zoological Museum Netherlands Onderlangs 176731 BK Otterlothe Netherlands Stichting Bargerveen Toernooiveld 16525 ED Nijmegenthe Netherlands B-wARE Research Centre/Radboud University Nijmegen Toernooiveld 16525 ED Nijmegenthe Netherlands

the vitality of European forests continues to decline due to new pests and diseases,climate-change related disturbances and high loads of atmospheric nitrogen *** soil health is a major factor underpinning the low vitality of west-European *** tree species with soil ameliorative traits is proposed as an avenue to counteract soil acidification and improve overall forest *** we evaluate the impact of black cherry(Prunus serotina Ehrh.),a known rich litter species,on the vitality of neighboring pedunculate oak(Quercus robur l.)in ten mixed forests on sand in Germany,Belgium and the *** found that black cherry admixture increases foliar N and P to a surplus whereas it causes deficiencies in foliar Mg,thereby resulting in an overall negative effect on oak foliar nutrient ***,defoliation of oak leaves by herbivory decreases with the proximity of black *** structural equation modelling(SEM),we tested the hypothesized‘improved soil health’*** analyses showed that black cherry admixture leads to lower accumulation in the humus layer,resulting in higher soil base saturation which has a positive effect on foliar Ca yet a negative effect on total ***,the SEM illustrated that herbivory of oak leaves decreases when black cherry is admixed,both via dilution and improved soil *** effects of black cherry on oak vitality via“improved soil health”in our SEM are however small in comparison to direct ***,our study showed that the combined positive and negative impacts of black cherry on oak vitality are limited,which tempers the potential benefits of using the rich litter species to counteract oak decline via improved soil health–yet,the concern of black cherry as an invasive alien species negatively affecting the vitality of mature pedunculate oak trees may also be exaggerated.

关键词： Rich litter species Black cherry Nutrient cycling Insect herbivory Dilution effect Humus type Pedunculate oak Plant-soil interaction

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development of an ultrathin liquid sheet target for laser ion acceleration at high repetition rates in the kilohertz range

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High Power laser Science and Engineering 2024年第3期12卷 134-145页

作者： M.Füle A.P.Kovács t.Gilinger M.Karnok P.Gaál S.Figul G.Marowsky K.Osvay National laser-Initiated transmutation laboratory University of SzegedSzegedHungary department of Experimental Physics University of SzegedSzegedHungary ElI AlPS ELI-HU Non-Profit Ltd.SzegedHungary department of Optics and Quantum Electronics University of SzegedSzegedHungary Advanced Microfluidic Systems GmbH GöttingenGermany

A colliding microjet liquid sheet target system was developed and tested for pairs of round nozzles of 10,11 and 18μm in *** sheet's position stability was found to be better than a few *** interaction with 50 mJ laser pulses,the 18μm jet has a resonance amplitude of 16μm at a repetition rate of 33 Hz,while towards 100 Hz it converges to 10μm for all nozzles.A white-light interferometric system was developed to measure the liquid sheet thickness in the target chamber both in air and in vacuum,with a measurement range of 182 nm±1μm and an accuracy of±3%.the overall shape and 3D shape of the sheet follow the Hasson±Peck model in *** vacuum versus air,the sheet gradually loses 10%of its thickness,so the thinnest sheet achieved was below 200 nm at a vacuum level of 10±4mbar,and remained stable for several hours of operation.

关键词： diagnostics laser ion acceleration nanometric liquid sheet targets vacuum test

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Pressure pain sensitivity: A new stress measure in children and adolescents with type 1 diabetes?

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world Journal of Clinical Pediatrics 2024年第1期13卷 150-154页

作者： Annemarie Cecilie Grauslund Emilie Bundgaard lindkvist Steffen Ullitz thorsen Søren Ballegaard Jens Faber Jannet Svensson Anna Korsgaard berg department of Pediatrics Herlev and Gentofte HospitalHerlev 2730Denmark Copenhagen University Hospital Steno Diabetes Center CopenhagenHerlev 2730Denmark department of Clinical Immunology RigshospitaletUniversity of CopenhagenCopenhagen 2100Denmark department of Endocrinology Herlev and Gentofte HospitalHerlev 2730Denmark department of Clinical Medicine Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagen 2200Denmark

type 1 diabetes(t1D)is associated with general-and diabetes-specific stress which has multiple adverse *** measuring stress is of great *** algometer measuring pressure pain sensitivity(PPS)has been shown to correlate to certain stress measures in ***,it has never been investigated in children and *** aim of our study was to examine associations between PPS and glycated hemoglobin(HbA1c),salivary cortisol and two questionnaires as well as to identify whether the algometer can be used as a clinical tool among children and adolescents with ***-three participants aged 6-18 years and diagnosed with t1D were included in this study with data from two study *** cortisol,PPS and questionnaires were collected,measured,and answered on ***1c was collected from medical *** found correlations between PPS and HbA1c(rho=0.35,P=0.046),cortisol(rho=-0.25,P=0.02)and Perceived Stress Scale(rho=-0.44,P=0.02)in different subgroups based on *** scored higher in PPS than females(Pwe found PPS to be correlated to HbA1c but otherwise inconsistent in *** PPS values indicated either measurement difficulties or hypersensibility towards pain.

关键词： Stress Children and adolescents type 1 diabetes Autonomic dysfunction

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StCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai l.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.t.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen l.l.Chen P.Chen S.l.Chen S.M.Chen S.Chen S.P.Chen w.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng t.G.Cheng J.P.Dai l.Y.Dai X.C.Dai D.dedovich A.denig I.denisenko J.M.Dias D.Z.Ding l.Y.Dong w.H.Dong V.Druzhinin D.S.Du Y.J.Du Z.G.Du l.M.Duan D.Epifanov Y.l.Fan S.S.Fang Z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.t.Feng J.l.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng l.S.Geng A.Gilman l.Gong t.Gong B.Gou w.Gradl J.l.Gu A.Guevara l.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo Z.H.Guo A.Guskov K.l.Han l.Han M.Han X.Q.Hao J.B.He S.Q.He X.G.He Y.l.He Z.B.He Z.X.Heng B.l.Hou t.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu w.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang w.Q.Huang X.t.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing X.l.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.lei E.levichev C.H.li C.li D.Y.li F.li G.li G.li H.B.li H.li H.N.li H.J.li H.l.li J.M.li J.li l.li l.li l.Y.li N.li P.R.li R.H.li S.li t.li w.J.li X.li X.H.li X.Q.li X.H.li Y.li Y.Y.li Z.J.li H.liang J.H.liang Y.t.liang G.R.liao l.Z.liao Y.liao C.X.lin D.X.lin X.S.lin B.J.liu C.w.liu D.liu F.liu G.M.liu H.B.liu J.liu J.J.liu J.B.liu K.liu K.Y.liu K.liu l.liu Q.liu S.B.liu t.liu X.liu Y.w.liu Y.liu Y.l.liu Z.Q.liu Z.Y.liu Z.w.liu I.logashenko Y.long C.G.lu J.X.lu N.lu Q.F.lü Y.lu Y.lu Z.lu P.lukin F.J.luo t.luo X.F.luo Y.H.luo H.J.lyu X.R.lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.l.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng l.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi w.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin l.Q.Qin X.S.Qin t.l.Qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key laboratory of theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and technology Xuzhou 221116China École Polytechnique Fédérale de lausanne(EPFl) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

the superτ-charm facility(StCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** StCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** StCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the StCF,describes conceptual designs of the StCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity StCF detector conceptual design

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High association strengths are linked to phenotypic similarity,including plumage color and patterns,of participants in mixed-species bird flocks of southwestern China

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Current Zoology 2024年第1期70卷 34-44页

作者： liping Zhou Christos Mammides Youfang Chen wenyi Zhou wenzhang Dai Edward l.Braun Rebecca t.Kimball Yang liu Scott K.Robinson Eben Goodale Guangxi Key laboratory of Forest Ecology and Conservation College of ForestryGuangxi UniversityNanning 530004China Kunming Natural History Museum of Zoology Kunming Institute of ZoologyChinese Academy of SciencesKunming 650223China Nature Conservation Unit Frederick University7Yianni Frederickou StreetPallouriotissaNicosia 1036Cyprus State Key laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China Florida Museum of Natural History University of FloridaGainesvilleFL 34201USA department of Biology University of FloridaGainesvilleFL 34201USA School of life Science and Institute of wetland Ecology Nanjing UniversityNanjing 210000China State Key laboratory of Biocontrol School of EcologySun-Yatsen UniversityGuangzhou 510275China department of Health and Environmental Science Xi'an Jiaotong Liverpool UniversitySuzhou 215123China

Participants in mixed-species bird flocks(MSFs)have been shown to associate with species that are similar in body size,diet,and evolutionary history,suggesting that facilitation structures these *** addition,several studies have suggested that species in MsFs resemble each other in their plumage,but this question has not been systematically investigated for any MsF *** the nonbreeding season of 2020 and 2021,we sampled 585 MSFs on 14 transects in 2 habitats of tongbiguang Nature Reserve in western Yunnan Province,*** performed social network analysis and the Multiple Regression Quadratic Assignment Procedure to evaluate the effect of 4 species traits(body size,overall plumage color,distinctive plumage patterns,and diet)and evolutionary history on species association strength at the whole-MSF and within-MSF *** 41 significant relationships showed that species with stronger associations were more similar in their various *** size had the strongest effect on association strength,followed by phylogeny,plumage patterns,and plumage color;diet had the weakest *** results are consistent with the hypotheses that the benefits of associating with phenotypically similar species outweigh the potential costs of interspecific competition,and that trait matching can occur in plumage characteristics,albeit more weakly than in other *** explanations exist as to why similarities in plumage may occur in MSFs,including that they could reduce predators'ability to target phenotypically"odd"*** trait matching in plumage occurs through assortative processes in ecological time or is influenced by co-evolution requires furtherstudy.

关键词： co-evolution interaction networks mixed-species animal groups phenotypic similarity trait convergence

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Modified Atmospheric Packaging and Its Effect on Postharvest Cannabis Quality

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American Journal of Plant Sciences 2024年第3期15卷 222-234页

作者： luke l. Maclaughlin Mason t. MacDonald department of Plant Food and Environmental Sciences Faculty of Agriculture Dalhousie University Halifax NS Canada

Cannabis sativa l. is used as fiber, food, and medicine in several countries. though it is illegal for recreational use in most of the world, there are some countries that have legalized production and sale. there is a lot of research on production of cannabis, but less so on storage technologies. Cannabis contains several high value compounds, such as cannabinoids and terpenoids, that are susceptible to degradation via light, temperature, and oxygen. Several studies have explored temperature and light, and industry has adjusted accordingly. However, less is known about oxygen-induced degradation. Biochemical studies have demonstrated oxidative degradation of high value compounds, and many producers use some form of modified atmospheric packaging (MAP) for storage. However, the efficacy of MAP is unclear. the objective of this paper is to review our current understanding of MAP in postharvest cannabis storage and identify avenues where additional research is needed.

关键词： Cannabinoids Cannabis sativa Marijuana Nitrogen Packaging Oxidation Postharvest terpenoids tHC

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Non-adhesive and adhesive contacts of an elastic quarter-or eighth-space with freely sliding sides

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Friction 2024年第9期12卷 2052-2063页

作者： Qiang lI Valentin l.POPOV technische Universität Berlin Berlin 10623Germany

the contact of an elastic quarter-or eighth-space is studied under the condition that the movement of the side surface of the quarter-space is constrained:It can slide freely along the plane of the side surface but its normal movement is blocked(for example,by a rigid wall).the solution of this contact problem can be easily achieved by additionally applying a mirrored load to an elastic ***-adhesive contact and the Johnson–Kendall–Roberts(JKR)-type adhesive contact between a rigid sphere and an elastic quarter-space under such a boundary condition is numerically simulated using the fast Fourier transform(FFt)-assisted boundary element method(BEM).Contacts of an elastic eighth-space are investigated using the same *** on the position of the sphere relative to the side edge,different contact behavior is *** the case of adhesive contact,the force of adhesion first increases with increasing the distance from the edge of the quarter-space,achieves a maximum,and decreases further to the JKR-value in large distance from the *** enhancement of the force of adhesion compared to the half-space-contact is associated with the pinning of the contact area at the *** provide the maps of the force of adhesion and their analytical approximations,as well as pressure distributions in the contact plane and inside the quarter-/eighth-space.

关键词： quarter-space eighth-space adhesion edge effect boundary element method(BEM)

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