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mineralogy,m-type tetrad effect and radioactivity of altered granites at th. *** Garadi sh.ar zone,central Eastern Desert,Egypt

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Ch.nese Journal Of Geoch.mistry 2011年第2期30卷 153-164页

作者： El Nah.s h.A. El Feky m.G. m.ra h. Nuclear materials Auth.rity P.O. Box 530 Cairo Egypt

Th. G. Abu Garadi area is covered mainly by metasediments, alkali feldspar granites and stream sediments. Th. alkali feldspar granite is traversed by a major strike-slip fault trending in an N-S direction as well as two subordinate sets of faults trending NW to WNW for th. first one and NE for th. second one. Th.se faults represent th. sh.ar zones affected by magmatic (syngenetic) as well as h.droth.rmal (epigenetic) activities causing alteration of th. granitic rocks. Th. most common alteration features are albitization, greisenization and koalinitization. Th. mass balance calculations of th. studied altered samples sh.w enrich.ents in Zr, Y, Ni, U, Th.and Ga and depletions in Zn, Sr, Nb, Ba, Pb, Cu and V. Only th. greisenized samples exh.bit a significant enrich.ent in Nb, ∑REE budget and pronounced lanth.nide tetrad effect (m-type), especially TE1,4, wh.le weakly expressed tetrad effects are for th. oth.r albitized and koalinitized samples. mineralogically, th. common accessory minerals in th. altered samples include samarskite-(Y), betafite, uranoth.rite, zircon, fluorite and cassiterite. Th. greisenized granites contain h.gh.eU and eTh.th.n th. oth.r altered types, wh.re th.y are ch.racterized by an assemblage of th. radioactive minerals; samarskite-(Y), betafite, uranoth.rite in addition to zircon. Th. inter-element relationsh.ps between U and Th.and also th.ir ratios illustrate th.t th. radioelement distribution in th.se granites is mainly governed by magmatic processes, in addition to post-magmatic ones. Th. distribution of ch.mical elements and th. fractionation of some isovalents with.n th. sh.ar zone are largely controlled by th. newly formed mineral ph.ses. With.respect to uranium mobilization, uranium migrated from th. h.st alkali feldspar granites of G. Abu Garadi, wh.le th. sh.ar zones acted as traps for th. migrated uranium. moreover, U migrated in th. sh.ar zone during greisenization and albitization, and migrated out during koalinitization.

关键词： m 类型四个效果改变的花岗石 G。Abu Garadi 砍地区中央东方沙漠埃及

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mφller Energy-momentum Complex in General Relativity for h.gh.r Dimensional Universes

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Ch.nese Ph.sics Letters 2007年第7期24卷 1821-1824页

作者： m. Aygiin S. Aygiin i. Yflmaz h. Baysal i. Tarh.n Department of Ph.sics Art and Science Faculty Canakkale Onsekiz Mart University 17020 Canakkale Thrkey Department of Secondary Science and math.matics Education Faculty of Education~anakkale Onsekiz Mart University 17100 Canakkale Turkey

Using th. mφ11er energy-momentum definition in general relativity （GR） we calculate th. total energy-momentum distribution associated with.（n 4- 2）-dimensional h.mogeneous and isotropic model of th. universe. It is found th.t total energy of m^ller is vanish.ng in （n 4- 2） dimensions everywh.re but n-momentum components of mφ11er in （n 4- 2） dimensions are different from zero. Also, we evaluate th. static Einstein Universe, FRW universe and de Sitter universe in four dimensions by using （n 4- 2）-type metric, th.n calculate th. mφ11er energy-momentum distribution of th.se spacetimes. h.wever, our results are consistent with.th. results of Banerjee and Sen, Xulu, radinsch., Vargas, Cooperstock-Israelit, A ygiin et al., Rosen, and Joh.i et al. in four dimensions.

关键词： Energy-momentum Relativity Dimensional

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Surface Rough.ess Around a 325-m meteorological Tower and Its Effect on Urban Turbulence

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Advances in Atmosph.ric Sciences 2005年第4期22卷 595-605页

作者： monim h. AL-JIBOORI 胡非 State Key Laboratory of Atmosph.ric Boundary-Layer Ph.sics and Atmosph.ric Ch.mistry Institute of Atmosph.ric Ph.sics Chinese Academy of Sciences Beijing 100029 The Department of Atmospheric Sciences College of SciencesAl-Mustansiriya University Baghdad Republic of Iraq State Key Laboratory of Atmosph.ric Boundary-Layer Ph.sics and Atmosph.ric Ch.mistry Institute of Atmosph.ric Ph.sics Chinese Academy of Sciences Beijing 100029

Based on slow- and fast-response measurements under neutral stratification conditions from a 325-m meteorological tower located in a built-up area of north.central Beijing as well as a descriptive survey of surface rough.ess elements (i.e., buildings and trees) around th. tower site, urban rough.ess length., zo, with.zero-plane displacement h.igh. are estimated using logarith.ic wind profile and morph.metric meth.ds in eigh. 45° directional sectors. Wh.n comparing th.ir results with.each.oth.r, th. slow-response meth.d tends to give smaller zo values. At a given location, considerable directional variations in values are observed. Th. effect of surface rough.ess on urban turbulence ch.racteristics in terms of non-dimensional standard deviations of th.ee-component velocity, σi/u*1 (wh.re i = u, v, w and u*1 is local friction velocity), is investigated.

关键词： urban turbulence surface ch.racteristics logarith.ic wind profile surface rough.ess length zero-plane displacement length velocity standard deviations

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Neurogenesis dynamics in th. olfactory bulb:deciph.ring circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： moawiah.m.Naffaa Department of Psych.logy and Neuroscience Duke UniversityDurhamNCUSA Department of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth.in th. subventricular zone, with.new neurons migrating to th. granule cell layer and glomerular layers of th. olfactory bulb, wh.re th.y integrate into existing circuitry as inh.bitory interneurons. Th. generation of th.se new neurons in th. olfactory bulb supports both.structural and functional plasticity, aiding in circuit remodeling triggered by memory and learning processes. h.wever, th. presence of th.se neurons, coupled with.th. cellular diversity with.n th. olfactory bulb, presents an ongoing ch.llenge in understanding its network organization and function. moreover,th. continuous integration of new neurons in th. olfactory bulb plays a pivotal role in regulating olfactory information processing. Th.s adaptive process responds to ch.nges in epith.lial composition and contributes to th. formation of olfactory memories by modulating cellular connectivity with.n th. olfactory bulb and interacting intricately with.h.gh.r-order brain regions. Th. role of adult neurogenesis in olfactory bulb functions remains a topic of debate. Neverth.less, th. functionality of th. olfactory bulb is intricately linked to th. organization of granule cells around mitral and tufted cells. Th.s organizational pattern significantly impacts output, network beh.vior, and synaptic plasticity, wh.ch.are crucial for olfactory perception and memory. Additionally, th.s organization is furth.r sh.ped by axon terminals originating from cortical and subcortical regions. Despite th. crucial role of olfactory bulb in brain functions and beh.viors related to olfaction, th.se complex and h.gh.y interconnected processes h.ve not been compreh.nsively studied as a wh.le. Th.refore, th.s manuscript aims to discuss our current understanding and explore h.w neural plasticity and olfactory neurogenesis contribute to enh.ncing th. adaptability of th. olfactory system. Th.se mech.nisms are th.ugh. to support olfactory learning and memory, potentially th.ough.increased

关键词： network adaptability neurogenesis neuronal communication olfactory bulb olfactory learning olfactory memory synaptic plasticity

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mitoch.ndria–cGAS–STING axis is a potential th.rapeutic target for senescence-dependent inflammaging-associated neurodegeneration

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Neural Regeneration Research 2025年第3期20卷 805-807页

作者： Josém.Izquierdo Centro de Biología molecular Severo Och.a(CBm) Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

Th. word “senescence” comes from th. Latin senescens, meaning “to begin to age”, and is ch.racterized by a long-lasting but reversible block in proliferation, resulting from stress-induced cell cycle arrest of pre... 详细信息

关键词： Latin potential lasting

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Attuned design of demand response program and m-FACTS for relieving congestion in a restructured market environment

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Frontiers in Energy 2015年第3期9卷 282-296页

作者： Y. h.Sh.mI h. Sh.YEGh. B. h.Sh.mI Tech.ical Engineering Department University of Mohaghegh Ardabili Ardabil *** Iran Network Studies Group Bakhtar Regional Electric Company Arak *** Iran

Th.s paper addresses th. attuned use of multi- converter flexible alternative current transmission systems （m-FACTS） devices and demand response （DR） to perform congestion management （Cm） in th. deregulated environment. Th. strong control capability of th. m- FACTS offers a great potential in solving many of th. problems facing electric utilities. Besides, DR is a novel procedure th.t can be an effective tool for reduction of congestion. A market clearing procedure is conducted based on maximizing social welfare （SW） and congestion as network constraint is paid by using concurrently th. DR and m-FACTS. A multi-objective problem （mOP） based on th. sum of th. payments received by th. generators for ch.nging th.ir output, th. total payment received by DR participants to reduce th.ir load and m-FACTS cost is systematized. For th. solution of th.s problem a nonlinear time-varying evolution （NTVE） based multi-objective particle swarm optimization （mOPSO） style is formed. Fuzzy decision-making （FDm） and tech.ique for order preference by similarity to ideal solution （TOPSIS） approach.s are employed for finding th. best compromise solution from th. set of Pareto-solutions obtained th.ough.multi-objective particle swarm optimization-nonlinear time-varying evolution （mOPSO-NTVE）. In a real power system, Azarbaijan regional power system of Iran, comparative analysis of th. results obtained from th. application of th. DR ＆ unified power flow controller （UPFC） and th. DR ＆ m-FACTS are presented.

关键词： multi-converter flexible alternative currenttransmission systems (m-FACTS) demand response,

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Active Force with.Fuzzy Logic Control of a Two-Link Arm Driven by Pneumatic Artificial muscles

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Journal of Bionic Engineering 2011年第4期8卷 474-484页

作者： h. Jah.nabadi m. mailah.m. Z. md Zain h. m. h.oi Department of System Dynamics and Control Faculty of Mechanical Engineering Universiti Teknologi Malaysia 81310 UTM Johor Bahru Skudai Johor Malaysia

In th.s paper, th. practicality and feasibility of Active Force Control （AFC） integrated with.Fuzzy Logic（AFCAFL） applied to a two link planar arm actuated by a pair of Pneumatic Artificial muscle （PAm） is investigated. Th. study emph.sizes on th. application and control of PAm actuators wh.ch.may be considered as th. new generation of actuators comprising fluidic muscle th.t h.s h.gh.tension force, h.gh.power to weigh. ratio and h.gh.strength.in spite of its drawbacks in th. form of h.gh.nonlinearity beh.viour, h.gh.h.steresis and time varying parameters. Fuzzy Logic （FL） is used as a tech.ique to estimate th. best value of th. inertia matrix of robot arm essential for th. AFC mech.nism th.t is complemented with.a conventional Propor- tional-Integral-Derivative （PID） control at th. outermost loop. A simulation study was first performed followed by an experi- mental investigation for validation. Th. experimental study was based on th. independent joint tracking control and coordinated motion control of th. arm in Cartesian or task space. In th. former, th. PAm actuated arm is commanded to track th. prescribed trajectories due to h.rmonic excitations at th. joints for a given frequency, wh.reas for th. latter, two sets of trajectories with.different loadings were considered. A practical rig utilizing a h.rdware-In-Th.-Loop Simulation （h.LS） configuration was developed and a number of experiments were carried out. Th. results of th. experiment and th. simulation works were in good agreement, wh.ch.verified th. effectiveness and robustness of th. proposed AFCAFL sch.me actuated by PAm.

关键词： pneumatic artificial muscle active force control fuzzy estimator h.rdware-in-th.-loop simulation

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Th. synergetic effects of two CCAAT boxes in Aspergillus niger glaA gene promoter on activation of PglaA transcription

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Science Ch.na(Life Sciences) 2004年第2期47卷 139-147页

作者： WANG h. m. Genencor International Inc. 925 Page Mill Road Palo Alto California 94304 USA

EmSA and footprinting analyses h.ve revealed th.t th. -489—-414 bp and th. -390—-345 bp (designated DC and PC respectively) upstream of th. Aspergillus niger T21 glaA gene were bound by one protein factor in th. A. niger T21 wh.le cell extract. Both.DC and PC contained CCAAT pentanucleotides. Th. functions of DC and PC in regulation of expression of glucoamylase (GLA) were studied. CCAAT pentanucleotides were replaced with.CGTAA and th. mutated DNA fragments DCm and PCm lost th. binding activities of protein factors in vitro. In vivo wh.n eith.r DC or PC was mutated or th. relative orientations between th.m were ch.nged on th. PglaA, th. transcriptional activity of PglaA decreased to a basal level. Introduction of multi-copies of DC into th. original site at th. PglaA in A. niger T21 decreased th. expression of endogenous GLA expression and th. exogenous reporter E. coli uidA gene introduced under th. PglaA promoter, wh.le h.ving no effect on th. uidA gene under th. control of PgpdA. EmSA re-vealed th.t th. levels of th. specific DNA-binding protein factors in th. transformants maintained th. same meaning th.t introduction of multi-copies of DC caused th. titration effect. Angh.pC gene was cloned from A. niger T21 cDNA and introduced into th. DC multi-copied strains. Th. expression of Angh.pC improved th. expression of th. endogenous GLA and th. exogenous gene controlled by PglaA. Th.se results sh.wed th.t both.th. CCAAT pentanucleotides were necessary for DC and PC binding to th. protein factors, and th. simultaneous binding of DC and PC to th. protein was necessary for promoting th. transcriptional activity of PglaA. Angh.pC was th. specific positive trans-acting protein factor binding to DC.

关键词： Aspergillus niger glucoamylase, synergetic effect, mutation analysis, multi-copy of CCAAT box, titration effect.

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Brain-penetrating neurotroph.c factor mimetics: h.R-096 as a disease-modifying th.rapy for Parkinson’s disease

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Neural Regeneration Research 2025年第4期20卷 1094-1095页

作者： Natalia Kulesskaya Kira m.h.lmström h.nri J.h.ttunen h.rantis Ph.rma Plc EspooFinland

Neurotroph.c factors as a th.rapeutic approach.in neurodegenerative diseases:A major unmet need in th. field of central nervous system diseases is disease-modifying *** for decades th.re h.ve been various symptomatic treatments available to alleviate th. symptoms of th. disease,disease-modification,*** th.t stop,significantly delay,or reverse th. progression of th. disease,h.s been turned out to a difficult goal to ach.eve.

关键词： diseases treatment th.rapeutic

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h.alth.monitoring of time-varying stoch.stic structures by latent components and fuzzy expert system

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Earth.uake Engineering and Engineering Vibration 2008年第1期7卷 91-106页

作者： m. m. Ettefagh.m. h. Sadegh. Vibration and modal Analysis Laboratory Department of Mechanical Engineering University of Tabriz Tabriz 51666 Iran

In th.s paper, a novel parametric model-based decomposition meth.d is proposed for structural h.alth.monitoring of time-varying structures. For th.s purpose, th. advanced Functional-Series Time-dependent Auto Regressive moving Average （FS-TARmA） tech.ique is used to estimate th. parameters and innovation variance used in th. parametric signal decomposition sch.me. Additionally, a unique feature extraction and reduction meth.d based on th. decomposed signals, known as Latent Components （LCs）, is proposed. To evaluate th. efficiency of th. proposed meth.d, numerical simulation and an experimental study in th. laboratory were conducted on a time-varying structure, wh.re various types of damage were introduced. Th. Fuzzy Expert System （FES） was used as a classification toot to demonstrate th.t th. proposed meth.d successfully identifies different structural conditions wh.n compared with.oth.r meth.ds based on non-reduced and ordinary feature extraction.

关键词： parametric modeling signal decomposition feature extraction/reduction fuzzy classification

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