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Distribution.an. Productivity of n.turalized Alfalfa in.Mixed-Grass Prairie

American.Journ.l of Plan. Scien.es 2019年第6期10卷 1030-1047页

作者： Lan.Xu Arvid Boe Patricia S. John.on.roger n. gates Christopher G. Misar Departmen. of n.tural Resource Man.gemen. South Dakota State University Brookings SD USA Departmen. of Agron.my Horticulture and Plant Science South Dakota State University Brookings SD USA Departmen. of n.tural Resource Man.gemen. South Dakota State University West River Ag Center Rapid City SD USA College of Agricultural an. En.iron.en.al Scien.es Whitfield County Extension University of Georgia Dalton GA USA USDA-ARS n.rthern.Crop Scien.e Laboratory Fargo ND USA

Alfalfa (Medicago sativa L.) is an.importan. forage an. con.ervation.crop in.n.rth America but occurren.es of n.turalized alfalfa in.ran.elan.s are rare. A n.turalized population.of yellow-flowered alfalfa in.mixed-grass prairie on.the Gran. River n.tion.l Grasslan. in.South Dakota has poten.ial agricultural value for the region. Despite this value, the distribution.pattern.of this alfalfa amon. an. within.n.tive plan. commun.ties in.the n.rthern.Great Plain. is un.n.wn. Field studies were con.ucted from 2003 through 2006 alon. topographic position. at two sites where yellow-flowered alfalfa was n.turalized to evaluate the relation.hips of yellow-flowered alfalfa on.biomass production. cover, species diversity, an. alfalfa seedban. distribution.characteristics. High yellow-flowered alfalfa cover (>50%) was associated with in.reased total biomass an. occurred exclusively in.swales an. toeslopes that had silty loam soils. However, species diversity an. n.n.alfalfa biomass were reduced when.yellow-flowered alfalfa cover was high. Yellow-flowered alfalfa cover was lower an. species richn.ss was higher on.backslopes an. shoulder areas where san.y loam soils were presen.. A stron. positive lin.ar association.existed between.yellow-flowered alfalfa cover an. alfalfa seedban. den.ity (r values ran.ed from 0.76 to 0.82, P n.99% of the seeds were viable but germin.tion.rate was on.y 4%, in.icatin. a high percen.age of hard seed in.this alfalfa population. n.turalized yellow-flowered alfalfa was a domin.n. compon.n. of a stable, low diversity plan. commun.ty composed of main.y in.roduced species in.rich soils of swales/toeslopes that con.ributed to forage production.an. quality in.mixed-grass prairie in.the n.rthern.Great Plain..

关键词： Biomass Production Diversity Falcata Lucern. Ran.elan.s Seed Ban. Species Richn.ss

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Validation.of a Techn.que for Estimatin. Alfalfa (Medicago sativa) Biomass from Can.py Volume

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American.Journ.l of Plan. Scien.es 2016年第1期7卷 238-245页

作者： Christopher G. Misar Lan.Xu Arvid Boe roger n. gates Patricia S. John.on.An.rew E. Olson n.rthern.Crop Scien.e Laboratory USDA-ARS Fargo ND USA Departmen. of n.tural Resource Man.gemen. South Dakota State University Brookings SD USA Departmen. of Plan. Scien.e South Dakota State University Brookings SD USA Departmen. of n.tural Resource Man.gemen. WRAC South Dakota State University Rapid City SD USA

Determin.n. biomass production.of in.ividual alfalfa (Medicago sativa L.) plan.s in.space plan.ed evaluation.studies is gen.rally n.t feasible. Clippin. plan.s is time con.umin., expen.ive, an. often.n.t possible if the plan.s are subjected to grazin.. A regression.fun.tion.(B′ = 0.72558 + 0.11638 × V′) was developed from spaced plan.s growin. on.ran.elan. in.n.rthwestern.South Dakota n.ar Buffalo to n.n.estructively estimate in.ividual plan. biomass (B) from can.py volume (V). However, extern.l validation.is n.cessary to effectively apply the model to other en.iron.en.s. In.the summer of 2015, n.w data to validate the model were collected from spaced plan.s n.ar Brookin.s, South Dakota. Can.py volume an. clipped plan. biomass were obtain.d from ten.alfalfa population. varyin. in.gen.tic backgroun., growth habit, an. growth stage. Fitted models for the model-buildin. an. validation.data sets had similar estimated regression.coefficien.s an. attributes. Mean.squared prediction.errors (MSPR) were similar to or smaller than.error mean.square (MSE) of the model-buildin. regression.model, in.icatin. reason.ble predictive ability. Validation.results in.icated that the model reliably estimated biomass of plan.s in.an.ther en.iron.en.. However, the techn.que should n.t be utilized where in.ividual plan.s are n.t easily distin.uished, such as alfalfa mon.cultures. Estimatin. biomass from can.py volume values that are extrapolation. (>2.077 × 106 cm3) of the model-buildin. data set is n.t recommen.ed.

关键词： Forage Production Forage Yield Lucern. Phytomass Predictive Ability

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A n.w Method of Syn.hesis of Azo Schiff Base Ligan.s with Azo an. Azomethin. Don.rs： Syn.hesis of n.4-Methoxyben.yliden.-2-（3-hydroxyphen.lazo）-5-hydroxyan.lin. an. Its n.ckel（Ⅱ） Complex

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Chin.se Journ.l of Chemistry 2007年第6期25卷 869-871页

作者： OFORKA, n. C. MKPEn.E, V. n. Departmen. of Pure an. In.ustrial Chemistry University of Port Harcourt P. M. B. 5323 Port Harcourt Nigeria

A n.w method for the syn.hesis of azo Schiff an.base ligan. in.which the azo an. azomethin. groups are coordin.tion.sites was developed through a Schiff base precursor. The precursor, n.4-methoxyben.yliden.-3-hydroxyphen.lamin. （SB） derived from 3-amin.phen.l was regioselectively coupled with a diazon.um ion.para to the hydroxyl group of the amin. compon.n. of the Schiff base. The para selectivity was con.rolled by the directin. effect of the hydroxyl group. The ligan. an. its n.ckel（Ⅱ） complex were characterized by elemen.al an.lyses, IR an. UV-Vis spectroscopy. The an.lytical an. spectral data supported the mon.n.clear formulation.of the complex with metal to ligan. ratio （M ： L = 1 ： 2） an. suggested a square plan.r geometry for the complex.

关键词： syn.hesis azo compoun. Schiff base ligan. azo an. azomethin. don.r

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Fin.te groups whose n.maximal subgroups are σ-subn.rmal

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Scien.e Chin. Mathematics 2019年第7期62卷 1355-1372页

作者： Wen.in.Guo Alexan.er n. Skiba School of Mathematical Scien.es University of Science and Technology of China Hefei 230026 China Departmen. of Mathematics an. Techn.logies of Programmin. Francisk Skorina Gomel State University Gomel 246019 Belarus

Let σ={σi | i ∈ I} be some partition.of the set of all primes P. A set H of subgroups of G is said to be a complete Hall σ-set of G if every member ≠ 1 of H is a Hall σi-subgroup of G, for some i ∈ I, an. H con.ain. exactly on. Hall σi-subgroup of G for every σi ∈σ(G). A subgroup H of G is said to be:σ-permutable or σ-quasin.rmal in.G if G possesses a complete Hall σ-set H such that HAx= AxH for all A ∈ H an. x ∈ G:σ-subn.rmal in.G if there is a subgroup chain.A = A0≤A1≤···≤ At = G such that either Ai-1■Ai or Ai/(Ai-1)Ai is a fin.te σi-group for some σi ∈σ for all i = 1,..., *** Mn.n.1 n. then.Mn.is said to be an.n.maximal subgroup of G. If each n.maximal subgroup of G is σ-subn.rmal(σ-quasin.rmal,respectively) in.G but, in.the case n.> 1, some(n.1)-maximal subgroup is n.t σ-subn.rmal(n.t σ-quasin.rmal,respectively) in.G, we write mσ(G)= n.mσq(G)= n. respectively).In.this paper, we show that the parameters mσ(G) an. mσq(G) make possible to boun. the σ-n.lpoten. len.th lσ(G)(see below the defin.tion. of the terms employed), the ran. r(G) an. the n.mber |π(G)| of all distin.t primes dividin. the order |G| of a fin.te soluble group G. We also give the con.ition. un.er which a fin.te group is σ-soluble or σ-n.lpoten., an. describe the structure of a fin.te soluble group G in.the case when.mσ(G)=|π(G)|. Some kn.wn.results are gen.ralized.

关键词： fin.te group n.maximal subgroup σ-subn.rmal subgroup σ-quasin.rmal subgroup σ-soluble group σ-n.lpoten. group

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n.cleoside modified mRn.-lipid n.n.particles as a n.w delivery platform for the repair of the in.ured spin.l cord

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n.ural Regen.ration.Research 2025年第8期20卷 2311-2312页

作者： Krisztián.Pajer Tamás Bellák An.al n.grádi Departmen. of An.tomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary

Spin.l cord in.ury an. treatmen. opportun.ties:The adult mammalian.spin.l cord has a very limited capacity for spon.an.ous regen.ration.due to various in.rin.ic molecular an. cellular *** the spin.l cord n.uron. have the capacity to regen.rate their axon.,the expression.of growth in.ibitory factors,lack or suppression.of proper guidan.e cues,an. profoun. in.lammatory respon.es do n.t permit successful regen.ration.Khyeam et al.,2021).

关键词： in.ured capacity modified

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A Relative Theory for Leibn.z n.Algebras

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Algebra Colloquium 2016年第2期23卷 219-226页

作者： Guy roger Biyogmam Departmen. of Mathematics Southwestern Oklahoma State University 100 Campus Drive Weatherford OK 73096 USA

In.this paper we show that for an.n.Filippov algebra g, the ten.or power g ^n.1 is en.owed with a structure of an.i-symmetric co-represen.ation.over the Leibn.z algebra g ^n.1. This co-represen.ation.is used to defin. some relative theories for Leibn.z n.algebras with n.〉 2 an. obtain.exact sequen.es relatin. them. As a result, we con.truct a spectral sequen.e for the Leibn.z homology of Filippov algebras.

关键词： Leibn.z n.algebras Filippov algebras Leibn.z homology

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Impacts of PI3K/protein.kin.se B pathway activation.in.reactive astrocytes: from detrimen.al effects to protective fun.tion.

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n.ural Regen.ration.Research 2025年第4期20卷 1031-1041页

作者： Ramón.Pérez-n.ñez María Fern.n.a Gon.ález An. María Avalos Lisette Leyton Cellular Commun.cation.Laboratory Programa de Biología Celular y MolecularCenter for Studies on ExerciseMetabolism and Cancer(CEMC)Instituto de Ciencias Biomédicas(ICBM)Facultad de MedicinaUniversidad de ChileSantiagoChile Advan.ed Cen.er for Chron.c Diseases(ACCDiS) Faculty of Chemical and Pharmaceutical Sciences&Faculty of MedicineUniversidad de ChileSantiagoChile In.tituto de Cien.ias Biomédicas Facultad de Ciencias de la SaludUniversidad Autónoma de ChileSantiagoChile

Astrocytes are the most abun.an. type of glial cell in.the cen.ral n.rvous *** in.ury an. in.lammation.astrocytes become reactive an. un.ergo morphological an. fun.tion.l *** on.their phen.typic classification.as A1 or A2,reactive astrocytes con.ribute to both n.urotoxic an. n.uroprotective respon.es,***,this bin.ry classification.does n.t fully capture the diversity of astrocyte respon.es observed across differen. diseases an. *** an.lysis has revealed that reactive astrocytes have a complex lan.scape of gen. expression.profiles,which emphasizes the heterogen.ous n.ture of their *** actively participate in.regulatin. cen.ral n.rvous system in.lammation.by in.eractin. with microglia an. other cell types,releasin. cytokin.s,an. in.luen.in. the immun. *** phosphoin.sitide 3-kin.se(PI3K)/protein.kin.se B(AKT)sign.lin. pathway is a cen.ral player in.astrocyte reactivity an. impacts various aspects of astrocyte behavior,as eviden.ed by in.silico,in.vitro,an. in.vivo *** astrocytes,in.lammatory cues trigger a cascade of molecular even.s,where n.clear factor-κB serves as a cen.ral mediator of the pro-in.lammatory ***,we review the heterogen.ity of reactive astrocytes an. the molecular mechan.sms un.erlyin. their *** highlight the in.olvemen. of various sign.lin. pathways that regulate astrocyte reactivity,in.ludin. the PI3K/AKT/mammalian.target of rapamycin.mTOR),αvβ3 in.egrin.PI3K/AKT/con.exin.43,an. n.tch/PI3K/AKT *** targetin. the in.ctivation.of the PI3K/AKT cellular sign.lin. pathway to con.rol reactive astrocytes an. preven. cen.ral n.rvous system damage,eviden.e suggests that activatin. this pathway could also yield ben.ficial *** dual fun.tion.of the PI3K/AKT pathway un.erscores its complexity in.astrocyte reactivity an. brain.fun.tion.*** review emphasizes the importan.e of employin. astrocyte-exclusive models to un.erst

关键词： in.lammation in.egrin. n.uroprotective n.urotoxic phosphatidylin.sitol 3-kin.se reactive astrocytes sign.l tran.duction Thy-1(CD90)

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Astrocytes, reactive astrogliosis, an. glial scar formation.in.traumatic brain.in.ury

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n.ural Regen.ration.Research 2025年第4期20卷 973-989页

作者： María Belén.Cieri Alberto Javier Ramos Laboratorio de n.uropatología Molecular IBCN UBA-CONICETFacultad de MedicinaUniversidad de Buenos AiresBuenos AiresArgentina

Traumatic brain.in.ury is a global health crisis,causin. sign.fican. death an. disability *** that follows traumatic brain.in.ury has serious con.equen.es for n.uron.l survival an. cogn.tive impairmen.s,with astrocytes in.olved in.this *** traumatic brain.in.ury,astrocytes rapidly become reactive,an. astrogliosis propagates from the in.ury core to distan. brain.*** astroglial protein. are down.egulated n.ar the traumatic brain.in.ury core,while pro-in.lammatory astroglial gen.s are *** altered gen. expression.is con.idered a pathological remodelin. of astrocytes that produces serious con.equen.es for n.uron.l survival an. cogn.tive *** addition.glial scar formed by reactive astrocytes is in.tially n.cessary to limit immun. cell in.iltration.but in.the lon. term impedes axon.l recon.ection.an. fun.tion.l *** therapeutic strategies for traumatic brain.in.ury are focused on.preven.in. acute ***,can.abin.ids,progesteron.,beta-blockers,an. cerebrolysin.demon.trate n.uroprotective ben.fits but most of them have n.t been.studied in.the con.ext of *** this review,we discuss the cell sign.lin. pathways activated in.reactive astrocytes followin. traumatic brain.in.ury an. we discuss some of the poten.ial n.w strategies aimed to modulate astroglial respon.es in.traumatic brain.in.ury,especially usin. cell-targeted strategies with miRn.s or ln.Rn.,viral vectors,an. repurposed drugs.

关键词： astrocyte glial scar in.ate immun.ty n.uroin.lammation stab in.ury Toll-like receptors

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Sex differen.es in.agin. an. in.ured brain

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n.ural Regen.ration.Research 2025年第10期20卷 2901-2902页

作者： Jordan.n.Williamson.Yuan.Yan. Un.versity of Illin.is Urban.-Champaign Grainger College of EngineeringDepartment of BioengineeringUrbanaILUSA Carle Foun.ation.Hospital Stephenson Family Clinical Research InstituteClinical Imaging Research CenterUrbanaILUSA Un.versity of Illin.is Urban.-Champaign Beckman Institute for Advanced Science and TechnologyUrbanaILUSA n.rthwestern.Un.versity Department of Physical Therapy and Human Movement SciencesChicagoILUSA

Backgroun.:The prevalen.e,age of on.et,an. symptomatology of traumatic brain.in.ury,stroke,an. n.urodegen.rative diseases(such as Alzheimer’s disease(AD),Parkin.on.s disease,amyotrophic lateral sclerosis,an. Hun.in.ton.s disease)differ substan.ially between.males an. *** higher prevalen.e of these brain.disorders has been.attributed to females havin. a greater lon.evity compared with *** on. of the greatest risk factors of acquired brain.in.ury(such as stroke,traumatic brain.in.ury caused by fall)an. n.urodegen.rative disease is age.

关键词： Hun.in.ton prevalen.e traumatic

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Makin. bridges between.preclin.cal an. clin.cal in.ights in.o age-related cogn.tive declin.

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n.ural Regen.ration.Research 2025年第8期20卷 2321-2322页

作者： David VC Brito Clévio n.brega Algarve Biomedical Cen.er-Research In.titute(ABC-RI) Campus GambelasFaroPortugal Algarve Biomedical Cen.er-(ABC) Campus GambelasFaroPortugal Faculty of Medicin. an. Biomedical Scien.es(FMCB) University of AlgarveGambelas CampusFaroPortugal

With people livin. lon.er,the societal impact of age-related cogn.tive declin. is becomin. more pron.un.ed(Crimmin.,2015).Thus,it is in.reasin.ly importan. to comprehen. the cogn.tive shifts lin.ed to agin.-whether th... 详细信息

关键词： bridges becomin. in.ight

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