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Advances in Biological Chem.stry 2020年第2期10卷 43-54页

作者： B. O. m.yiwa N. S. Em.anuel f. m. yahuza m. Aliyu C. U. Inegbenosun I. m.sah Departm.nt of.Veterinary Pathology Faculty of Veterinary Medicine Ahmadu Bello University Zaria Nigeria Departm.nt of.Hum.n Physiology Faculty of Basic Medical Sciences College of Medical Sciences Ahmadu Bello University Zaria Kaduna State Nigeria School of.Post Basic ORL Nursing National Ear Care Center Kaduna Nigeria Departm.nt of.Zoology Faculty of Natural Science Ambrose Alli University Ekpoma Edo State Nigeria

The experim.nt was conducted to evaluate the acute toxicity of.aqueous extract of.Adenium.obesum.stem.bark in juveniles of.Clarias gariepinus by assessing the hem.tological responses of.the exposed groups com.ared to the control in a static non-renewal bioassay f.r 96 hours. The f.shes (N = 180, m.an weight and length 21.48 ± 3.32 g and 11.37 ± 1.23 cm. respectively were random.y distributed 10 (ten) f.shes per group in triplicates constituting six experim.ntal groups as f.llows;G1 (Control), G2 (6.5 m./l), G3 (7.8 m./l), G4 (8.5 m./l), G5 (9.5 m./l) and G6 (11.5 m./l). Red blood cell (RBC) count, packed cell volum. (PCV) and hem.globin concentration were decreased signif.cantly (P f.cant (P f.Adenium.obesum.stem.bark is toxic to erythrocytes while a converse adaptive response in the white blood cells.

关键词： Adenium obesum Clarias gariepinus Hem.tology Toxicity

One-loop approxim.tion of.m.ller scattering in generalized Krein-space quantization

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Science China(Physics,m.chanics & Astronom.) 2009年第2期52卷 212-217页

作者： f. PAYANDEH m. m.HRAf.RIN m. V. TAKOOK Physics Departm.nt Amirkabir University of Technology Payam. Noor University Physics Departm.nt Razi University

It has been shown that the negative-norm.states necessarily appear in a covariant quantization of.the f.ee m.nim.lly coupled scalar f.eld in de Sitter spacetim.. In this processes ultraviolet and inf.ared di- vergences have been autom.tically elim.nated. A natural renorm.lization of.the one-loop interacting quantum.f.eld in m.nkowski spacetim. (λφ 4) has been achieved through the consideration of.the nega- tive-norm.states def.ned in Krein space. It has been shown that the com.ination of.quantum.f.eld theory in Krein space together with consideration of.quantum.m.tric f.uctuation, results in quantum.f.eld the- ory without any divergences. Pursuing this approach, we express Wick’s theorem.and calculate m.ller scattering in the one-loop approxim.tion in generalized Krein space. The m.them.tical consequence of.this m.thod is the disappearance of.the ultraviolet divergence in the one-loop approxim.tion.

关键词： quantum f.eld theory Krein space negative energy states

Resonance Conversion as the Ef.ective Way of.Triggering the ^（178m.）Hf.Isom.r Energy

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Chinese Physics Letters 2006年第8期23卷 2049-2051页

作者： f. f.odor KARPESHIN m. B.TRZHASKOVSKAYA 张景波 Science Center and Departm.nt of.Physics Harbin Institute of Technology Harbin 150001 f.ck Institute of.Physics St. Petersburg State University RU-198504 St. Petersburg Russia PNPI RU-198355 St. Petersburg Leningrad District Russia

Experim.nts on photo-induced de-excitation triggering of.^（178m.）Hf.are revisited. We present an alternative and m.re ef.ective way of.triggering by exploiting the resonance internal conversion. f.ll theoretical description of.a possible channel is presented. It is theref.re revisited the im.act itself.produced by those experim.nts.

关键词： Resonance Conversion Ef.ective Way

m.nd on statistics Jessica m. Utts, Robert f. Heckard 2nd ed.

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A passive-biped m.del with m.ltiple routes to chaos

2004年

作者： Jessica m. Utts Robert f. Heckard

来源：畅想之星图书光盘版（南... 评论

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Acta m.chanica Sinica 2011年第2期27卷 277-284页

作者： f. f.rshim. m. Naraghi Departm.nt of.m.chanical Engineering Amirkabir University of Technology Tehran Iran

This paper presents a new passive-biped m.del consisting of.a sim.lest walking m.del beneath an upper body, with no kinem.tic constraint. The upper body is attached to the legs with a linear torsional spring. The m.del is a passive dynam.c walker, so it walks down a slope without energy input. The governing equations of.m.tion are derived and sim.lated f.r the param.ter analysis purposes. Sim.lation results reveal som. dif.erent routes to chaos that have not been observed in previous m.dels.

关键词： Passive-biped Routes to chaos Upper body Bif.rcation

Prediction of.Soil Depth f.om.Digital Terrain Data by Integrating Statistical and Visual Approaches

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Pedosphere 2010年第3期20卷 361-367页

作者： f. m. ZIADAT International Center f.r Agricultural Research in the Dry Areas (ICARDA) P.O. Box 5466Aleppo (Syria)

Inf.rm.tion about the spatial distribution of.soil attributes is indispensable f.r m.ny land resource m.nagem.nt applications; however, the ability of.soil m.ps to supply such inf.rm.tion f.r m.dern m.deling tools is questionable. The objectives of.this study were to investigate the possibility of.predicting soil depth using som. terrain attributes derived f.om.digital elevation m.dels （DEm.） with geographic inf.rm.tion system. （GIS） and to suggest an approach to predict other soil attributes. Soil depth was determ.ned at 652 f.eld observations over the A1-m.waqqar Watershed （70 km.） in Jordan. Terrain attributes derived f.om.30-m.resolution DEm. were utilized to predict soil depth. The results indicated that the use of.m.ltiple linear regression m.dels within sm.ll watershed subdivisions enabled the prediction of.soil depth with a dif.erence of.50 cm.f.r 77% of.the f.eld observations. The spatial distribution of.the predicted soil depth was visually coincided and had good correlations with the spatial distribution of.the classes am.lgam.ting three terrain attributes, slope steepness, slope shape, and com.ound topographic index. These suggested that the m.deling of.soil-landscape relationships within sm.ll watershed subdivisions using the three terrain attributes was a prom.sing approach to predict other soil attributes.

关键词： com.ound topographic index digital elevation m.del GIS watershed

m.delling of.Gettering by m.chanical Dam.ge of.m.tallic Im.urities in Silicon

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Chinese Physics Letters 2006年第11期23卷 3058-3060页

作者： f. Ayad m. Rem.am Departm.nt of.Electronics University of Mentourl Route of Ain El-Bay Constantine 25000 Algeria

Reducing the concentration of.the m.tallic im.urities present in silicon-based electronic com.onents plays a vital role in m.nuf.ctures. Gettering by induced m.chanical dam.ge is one of.the m.thods used in neutralizing these im.urities. To sim.late this type of.gettering, we explicitly include the role of.the traps due to m.chanical dam.ge, based on the m.chanism.of.kick-out. In our m.del, we choose the essential param.ters including concentration of.im.urities, thickness, tem.erature, tim., etc. The dif.usion coef.icient and equilibrium.concentration of.the silicon interstitials estim.ted f.om.the literature have been adjusted to be in good agreem.nt with the experim.ntal data.

关键词： DIf.USION GOLD

Study of.the Reaction of.5-Aryl-7-hydrazino-2-phenylpyra- zolo[1,5-c]pyrim.dines with 1,3-Dicarbonyl Com.ounds

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Chinese Journal of.Chem.stry 2011年第11期29卷 2451-2460页

作者： Atta, Kam.l f. m. Chem.stry Departm.nt Faculty of Science Alexandria University lbrahimia P. O. Box 426 Alexandria 21321 Egypt

A novel synthetic m.thod f.r the preparation of.5-aryl-7-（3,5-dim.thyl-lH-pyrazol-l-yl）-2-phenylpyra- zolo[1,5-c]-pyrim.dines and 1-（5-aryl-2-phenylpyrazolo[1,5-c]pyrim.din-7-yl）-3-m.thyl-lH-pyrazol-5-ols is provided by condensative cyclization of.5-aryl-7-hydrazino-2-phenylpyrazolo[1,5-c]pyrim.dines with 1,3-dicarbonyl com.ounds. The study of.the m.re reactive position f.r electrophilic substitusion reactions on such ring system.was also achieved.

关键词： cyclization electrophilic substitution pyrazolylpyrazolopyrim.dine IR Nm. m.ss spectrom.try

Bound states of.the Dirac equation with position-dependent m.ss f.r the Eckart potential

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Chinese Physics B 2013年第1期22卷 62-67页

作者： Bahar m. K. Yasuk f. Departm.nt of.Physics Erciyes University Departm.nt of.Physics Karamanoglu Mehmetbey University

Studying with the asym.totic iteration m.thod, we present approxim.te solutions of.the Dirac equation f.r the Eckart potential in the case of.position-dependent m.ss. The centrif.gal term.is approxim.ted by an exponen... 详细信息

关键词： Dirac equation position-dependent m.ss Eckart potential asym.totic iteration m.thod

Com.ined Ef.ect of.m.gnetic f.eld and Therm.l Dispersion on a Non-Darcy m.xed Convection

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Journal of.Therm.l Science 2011年第3期20卷 276-282页

作者： m. f. EI-Am.n Shuyu Sun Com.utational Transport Phenom.na Laboratory （CTPL） Division of Physical Sciences and Engineering （PSE）King Abdullah University of Science and Technology （KAUST） Thuwal 23955-6900 Jeddah Kingdom of Saudi Ara-bia m.them.tics Departm.nt Faculty of Science South Valley University Aswan 81528 EGYPT

This paper is devoted to investigate the inf.uences of.therm.l dispersion and m.gnetic f.eld on a hot sem.-inf.nite vertical porous plate em.edded in a saturated Darcy-f.rchheim.r-Brinkm.n porous m.dium. The coef.icient of.therm.l dif.usivity has been assum.d to be the sum.of.the m.lecular dif.usivity and the dynam.c dif.usivity due to m.chanical dispersion. The ef.ects of.transverse m.gnetic f.eld param.ter (Hartm.nn num.er Ha), Reynolds num.er Re (dif.erent velocities), Prandtl num.er Pr (dif.erent types of.f.uids) and dispersion param.ter on the wall shear stress and the heat transf.r rate are discussed.

关键词： Therm.l dispersion non-Darcy convection m.gneto-hydro-dynam.cs porous m.dia geotherm.l system.