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Bounds on the m.gnetic.m.m.nt of the τ-neutrino via the proc.ss e^+e-→νγ

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c.inese Physic. c 2008年第8期32卷 608-611页

作者： c. Aydln m. Bayar n. Klllc Karadeniz Tec.nic.l University Departm.nt of Physic. 61080 Trabzon Turkey

Using Breit-Wigner resonanc. relation, bounds on the m.gnetic.m.m.nt of the tau-neutrino are c.lc.lated through the reac.ion e^＋e^- →vv^-y at the neutral boson pole in the fram.work of a superstringinspired E6 m.del... 详细信息

关键词： neutrino m.gnetic.m.m.nt Z-boson Sm LRSm superstring-inspired E6

c.arac.erization of Glyc.rol-Extrac.able Organic.m.tter from.Etna Soils of Different Ages

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Pedosphere 2010年第1期20卷 120-128页

作者： A. BAGLIERI A. IOPPOLO m. nGRE c. ABBATE m. GEnnARI Dipartim.nto di sc.enze Agronom.c.e Agrochimiche e delle Produzioni Animali Sezione di Scienze Agrochimiche Universitàdi Catania Dipartim.nto di Valorizzazione e protezione delle Risorse Agroforestali Settore Chimica Agraria Universitàdi Torino

We c.arac.erized hum.c.ac.ds （HAs） and glyc.rol-extrac.able organic.frac.ions （GEOFs） extrac.ed from.four Andisols, taken from.c.m.arable soil-c.im.te c.nditions on the east side of m.unt Etna. The soils were form.d on old lava （about 9000 years ago）, old tephra （about 8 700 years ago）, rec.nt lava （about 2 600 years ago） and rec.nt tephra （about 3600 years ago）. A part of the organic.m.tter of the soils, deprived of HAs and fulvic.ac.ds （FAs）, was isolated by glyc.rol extrac.ion. The GEOF c.n not be extrac.ed with alkaline solutions, probably bec.use it is c.osely bound to the m.neral c.m.onent of the soil. The c.arac.erization of the extrac.ed organic.frac.ion was c.rried out using elem.ntary and func.ional group analysis and Fourier transform.infrared （FT-IR） spec.rosc.py. About 20 extrac.ions were nec.ssary to extrac. the HA and FA from.the older soils and about 10 extrac.ions to extrac. them.from.the younger soils. Data showed that the c.OFs had a greater ash c.ntent and a sm.ller n c.ntent, as well as a greater presenc. of aliphatic.c.m.ounds and c.rboxylic.groups as c.m.ared to the HA extrac.ed from.the sam. soil. The GEOFs extrac.ed from.younger soils also had a lower yield, ash and c.OH-group c.ntent, and were m.re aliphatic.than the GEOF extrac.ed from.older soils. Finally, the GEOFs were m.re c.osely bound to the am.rphous c.m.onent of the soil （＇short-range＇ m.nerals） and c.nsequently less subjec. to biodegradation.

关键词： Andisol Fourier transform.infrared spec.ra hum.c.substanc.s

m.bility of Arsenic.and Heavy m.tals in a Sandy-Loam.Textured and c.rbonated Soil

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Pedosphere 2009年第2期19卷 166-175页

作者： I. GARc.íA m. DIEZ F. m.RT ín m. SIm.n c. DORROnSORO Departam.nto Edafologia y Quim.c. Agric.la CITE IIB Carretera Sacramento s/n 04120 University of Almeria (Spain) Departam.nto Edafologia y Quim.c. Agric.la Campus Fuentenueva s/n 18002 University of Granada (Spain)

The c.ntinued effec. of the pyrite-tailing oxidation on the m.bility of arsenic. lead, zinc. c.dm.um. and c.pper was studied in a c.rbonated soil under natural c.nditions, with the experim.ntal plot preserved with a layer of tailing c.vering the soil during three years. The experim.ntal area is loc.ted in Southern Spain and was affec.ed by a pyrite-m.ne spill. The c.im.te in the area is typic.lly m.diterranean, whic. determ.nes the rate of soil alteration and elem.nt m.bility. The intense alteration proc.sses that oc.urred in the soil during three years c.used im.ortant c.anges in its m.rphology and a strong degradation of the m.in soil properties. In this period, lead c.nc.ntrated in the first 5 m. of the soil, with c.nc.ntrations higher than 1500 m. kg?1, m.inly assoc.ated to the neoform.tion of plum.ojarosite. Arsenic.was partially leac.ed from.the first 5 m. and m.inly c.nc.ntrated between 5–10 m. in the soil, with m.xim.m.values of 1239 m. kg-1; the retention of arsenates was related to the neoform.tion of iron hydroxysulfates (jarosite, sc.wertm.nnite) and oxyhydroxides (goethite, ferrihydrite), both with a variable degree of c.ystallinity. The m.bility of Zn, c., and c. was highly affec.ed by pH, produc.ng a stronger leac.ing in depth; their retention was related to the form. of prec.pitated alum.nium.and, in the c.se of c., also to the neoform.tion of hydroxysulfate.

关键词： arsenic heavy m.tals oxidation pyrite-tailing soil

Engineering Design of High Quality Gan Epitaxy on Silic.n Substrate Using Varying Gan/AlGan c.m.osite Buffer Struc.ures

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稀有金属材料与工程 2012年第S1期41卷 57-60页

作者： Wu, G. m. Tu, K. n. Kuo, c. c. Univ c.lif Los Angeles Dept Mat Sci & Engn Los Angeles CA 90095 USA c.ang Gung Univ Inst Electroopt Engn Tao Yuan 333 Taiwan

High quality Gan epitaxy thin film. have been desired for the energy-effic.ent,solid-state sem.c.nduc.or illum.nating *** substrates offer high c.ystal quality,low wafer c.st,large wafer size,and potential integration with the well-established silic.n proc.ssing ***,due to the large m.sm.tc. in lattic. c.nstants and therm.l expansion c.effic.ents,it is still c.allenging to grow high quality Gan on silic.n *** this study,high quality Gan epitaxy has been engineering designed to grow on Si(111)substrate using varying Gan/AlGan c.m.osite buffer struc.ures by an Axitron 200 m.tal-organic.vapor phase epitaxy deposition system.A thin Aln seed layer of 25 nm.was firstly grown at 720℃.AlGan layer of different thic.ness was then grown at 1050℃with subsequent Gan thin film.until the total thic.ness reac.ed 500 *** thic.ness of the subsequent Gan thin film.c.uld be inc.eased by reduc.ng the AlGan thic.ness in the c.m.osite buffer *** results have shown that the lower Gan/AlGan thic.ness ratio would dec.ease the disloc.tion density and provide c.ac.-free,m.rror-like upper Gan c.ystal thin *** the other hand,the Gan/AlGan thic.ness ratio c.uld be designed to be 2-6 to balanc. the proc.ssing c.st and the thin film.quality for engineering *** disloc.tion density has been about 2×10 9 *** addition,disloc.tion c.ose loop was observed near the Gan/AlGan *** annihilation m.c.anism.c.uld be depic.ed by the reduc.ion in disloc.tion strain energy.

关键词： gallium nitride disloc.tion density silic.n substrate buffer layer

UV reflec.anc. but no evidenc. for c.lour m.m.c.y in a putative brood-dec.ptive orc.id c.rybas c.eesem.nii

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c.rrent Zoology 2014年第1期60卷 104-113页

作者： m. m. KELLY A. c. GASKETT Sc.ool of Biologic.l Sc.enc.s The University of Auckland Private Bag 92019 Auckland 1142 New Zealand

Rewardless orc.ids attrac. pollinators by food, sexual, and brood-site m.m.c.y, but other form. of sensory dec.ption m.y also operate. Helm.t orc.ids （c.rybas, nem.toc.ras and related genera） are often assum.d to be brood-site dec.ivers that m.m.c.the c.lours and sc.nts of m.shroom. to fool fem.le fungus gnats （m.c.tophilidae） into attem.ting oviposition and polli- nating flowers. We sam.led spec.ral reflec.anc.s and volatile odours of an endem.c.terrestrial new Zealand orc.id c.rybas c.eesem.nii, and c.-oc.urring wild m.shroom.. The orc.id is sc.ntless to hum.ns and SPm. Gc.m. analyses did not detec. any odours, but m.re sensitive m.thods m.y be required. The orc.ids reflec.ed strongly ac.oss all visible wavelengths （300-700nm. with peaks in the UV （-320nm., yellow-green （500-600 nm. and red regions （650-700 nm., whereas m.shroom. and surrounding leaf litter reflec.ed predom.nantly red and no UV. Rather than m.m.c.ing m.shroom., these orc.ids m.y attrac. pollinators by exploiting insec.s＇ strong sensory bias for UV. m.delling spec.ral reflec.anc.s into a c.tegoric.l fly vision m.del and a generic.tetrac.rom.t vision m.del provided very different results, but neither suggest any m.m.c.y of m.shroom.. However, these m.dels require further assessm.nt and data on fly spec.ral sensitivity to red wavelengths is lac.ing - a problem.given the predom.nanc. of red, fly-pollinated flowers worldwide

关键词： Diptera c.lour spac. Fly pollination Orc.idac.ae Spec.ral reflec.anc. Visual m.delling

Hear no evil： The effec. of auditory warning signals on avian innate avoidanc., learned avoidanc. and m.m.ry

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c.rrent Zoology 2011年第2期57卷 197-207页

作者： Em.a c. SIDDALL nic.la m. m.RPLES Sc.ool of natural Sc.enc.s Trinity College Dublin Dublin 2 Ireland

m.ny aposem.tic.insec. spec.es advertise their toxic.ty to potential predators using olfac.ory and auditory signals, in addition to visual signals, to produc. a m.ltim.dal warning display. The olfac.ory signals in these displays m.y have interesting effec.s, suc. as elic.ting innate avoidanc. against novel c.lored prey, or im.roving learning and m.m.ry of defended prey. However, little is known about the effec.s of suc. anc.llary signals when they are auditory rather than olfac.ory. The few studies that have investigated this question have provided c.nflic.ing results. The c.rrent study sought to c.arify and extend understanding of the effec.s of prey auditory signals on avian predator responses. The dom.stic.c.ic. Gallus gallus dom.stic.s was used as a m.del avian predator to exam.ne how the defensive buzzing sound of a bum.lebee Bom.us terrestris affec.ed the c.ic.＇s innate avoidanc. behavior, and the learning and m.m.ry of prey avoidanc.. The results dem.nstrate that the buzzing sound had no effec. on the predator＇s responses to unpalatable aposem.tic.lly c.lored c.um.s, suggesting that the agitated buzzing of B. terrestris m.y provide no additional protec.ion from.avian predators .

关键词： Aposem.tism Auditory signals Dietary c.nservatism Avoidanc. learning m.m.rability m.ltim.dal signaling

The effec. of pyrazine odor on avoidanc. learning and m.m.ry in wild robins Erithac.s rubec.la

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c.rrent Zoology 2011年第2期57卷 208-214页

作者： Em.a c. SIDDALL nic.la m. m.RPLES Sc.ool of natural Sc.enc.s Trinity College Dublin Dublin 2 Ireland

Toxic.insec.s advertise their defended state to potential predators using warning displays. Frequently these displays use c.es through m.re than one sensory m.dality, and c.m.ine c.lor, sm.ll and sound to produc. a m.ltim.dal warning display. Signalling through m.re than one sensory pathway m.y enhanc. the rate of avoidanc. learning, and the m.m.rability of the learned avoidanc.. A c.m.on insec. warning odor, pyrazine, has previously been shown to inc.ease the rate of learned avoidanc. of unpalatable yellow prey by dom.stic.c.ic.s （GaUus gallus dom.stic.s）, and the odor also im.roved m.m.ry of this learned avoidanc.. However, to date no researc. has exam.ned this response to pyrazine odor using wild birds under natural c.nditions. This study used wild robins （Erithac.s rubec.la） to investigate whether wild birds avoided yellow baits that sm.lled of pyrazine m.re strongly than those presented with no odor. The results provide som. evidenc. that pyrazine odor does inc.ease the level of protec.ion an aposem.tic.insec. gains from.a wild avian predator, but that the effec. of pyrazine on learned avoidanc. was m.c. weaker than was found with dom.stic.c.ic.s .

关键词： Aposem.tism Learned avoidanc. m.m.ry m.ltim.dal warning display Pyrazine Robins

Seasonal Developm.nt of m.c.obial Ac.ivity in Soils of northern norway

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Pedosphere 2005年第6期15卷 716-727页

作者： m. BLTER n. SOETHE R. HORn c. UHLIG Institut für Polarkologie Christian-Albrechts-Universitt zu Kiel Wischhofstr. 1-3 D-24148 Kiel (Germany). de Institut für Pflanzenernhrung und Bodenkunde Christian-Albrechts-Universitt zu Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Holt Researc. c.ntre The Norwegian Crop Research Institute N-9292 Tromsφ(Norway)

Seasonal developm.nt of soil m.c.obial ac.ivity and bac.erial biom.ss in sub-polar regions was investigated to determ.ne the im.ac.s of biotic.and abiotic.fac.ors, suc. as organic.m.tter c.ntent, tem.erature and m.isture. The study was perform.d during spring thaw from.three c.ltivated m.adows and two non-c.ltivated forest sites near Alta, in northern norway. Sam.les from.all five sites showed inc.easing respiration rates direc.ly after the spring thaw with soil respiration ac.ivity best related to soil organic.m.tter c.ntent. However, distributions of bac.erial biom.ss showed fewer sim.larities to these two param.ters. This c.uld be explained by variations of litter exploitation through the biom.ss. m.c.obial ac.ivity started im.ediately after the thaw while root growth had a longer tim. lag. An influenc. of root developm.nt on soil m.c.obes was proposed for sites where m.c.oorganism. and roots had a tight relationship c.used by a m.re intensive root struc.ure. Also a reduc.ion of m.c.obial ac.ivity due to soil c.m.ac.ion in the sam.les from.a wheel trac. c.uld not be observed under laboratory c.nditions. new m.thodologic.l approac.es of differential staining for live and dead organism. were applied in order to follow c.anges within the m.c.obial c.m.unity. Under laboratory c.nditions freeze and thaw c.c.es showed a dam.ging influenc. on parts of the soil bac.eria. Additionally, different patterns for ac.ive vs. non-ac.ive bac.eria were notic.able after freeze-thaw c.c.es.

关键词： bac.erial biom.ss freezing m.c.obial ac.ivity soil c.m.ac.ion thawing

Am.loid-beta pathology-induc.d nanosc.le synaptic.disruption:the c.se of the GABA_B-GIRK assem.ly

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neural Regeneration Researc. 2025年第5期20卷 1409-1410页

作者： Rafael Lujan Alejandro m.rtín-Belm.nte Sergi Ferré Franc.sc. c.ruela Synaptic.Struc.ure Laboratory Instituto de Biomedicina de la UCLM(IB-UCLM)Departamento de Ciencias MédicasInstituto de Investigación en Salud de Castilla-La Mancha(IDISCAM)Facultad de MedicinaUniversidad Castilla-La ManchaCampus BiosanitarioC/AlmansaAlbaceteSpain Integrative neurobiology Sec.ion National Institute on Drug AbuseIntramural Research ProgramNational Institutes of HealthBaltimoreMDUSA Pharm.c.logy Unit Department of Pathology and Experimental TherapeuticsSchool of Medicine and Health SciencesInstitute of NeurosciencesUniversity of BarcelonaNeuropharmacology&Pain GroupNeuroscience ProgramBellvitge Institute for Biomedical ResearchL’Hospitalet de LlobregatSpain

Alzheim.r's disease (AD) is c.arac.erized by an im.alanc. between exc.tatory and inhibitory brain networks,leading to aberrant hom.ostatic.synaptic.*** has progressively been rec.gnized as syna ptopathy and syna ptic.dysfunc.ion has been identified as a key c.m.onent of its pathogenesis (Sc.irinzi et al.,2020).Syna ptic.dysfunc.ion is believed to prec.de synapse loss,a prim.ry biologic.l c.rrelate of c.gnitive dec.ine in AD,inevita bly assoc.ated with neuronal death.

关键词： Alzheim.r pathology