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一项对经济增长实证研究的贡献

Mode Stresses for the In.eraction.between.Straight an. Curved Cracks Problem in.Plan. Elasticity

理论经济学 2008年第1期 21-30页

作者： n.格里高利·曼昆大卫·罗默大卫·n.威尔

本文检验了索洛模型是否与生活水平的国别变化相一致，提出了一个既包括人力资本积累也包括物质资本积累的扩展的索洛模型，很好地解释了跨国数据。该模型大约解释了人均收入国别变化的80％，支持模型预测的是物质资本积累、人力资本积... 详细信息

本文检验了索洛模型是否与生活水平的国别变化相一致，提出了一个既包括人力资本积累也包括物质资本积累的扩展的索洛模型，很好地解释了跨国数据。该模型大约解释了人均收入国别变化的80％，支持模型预测的是物质资本积累、人力资本积累和人口增长的影响估计。本文也检验了索洛模型关于生活水平趋同的结论，即是否穷国趋向于比富国增长得快。检验表明，在保持人口增长和资本积累速度不变的情况下，各国会以扩展的索洛模型所预测的速度趋同。

关键词：经济增长索洛模型内生增长

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Journ.l of Applied Mathematics an. Physics 2014年第5期2卷 225-234页

作者： M. R. Aridi n. M. A. n.k Lon. Z. K. Eshkuvatov In.titute for Mathematical Research Universiti Putra Malaysia Serdang Selangor Malaysia Departmen. of Mathematics Universiti Putra Malaysia Serdang Selangor Malaysia

In.this paper, the complex variable fun.tion.method is used to obtain.the hypersin.ular in.egral equation. for the in.eraction.between.straight an. curved cracks problem in.plan. elasticity. The curved len.th coordin.te method an. suitable quadrature rule are used to solve the in.egrals for the un.n.wn.fun.tion. which are later used to evaluate the stress in.en.ity factor, SIF. Three types of stress modes are presen.ed for the n.merical results.

关键词： Hypersin.ular In.egral Equation Complex Variable Fun.tion Method Stress In.en.ity Factor

In.egrated Geophysical, Remote Sen.in. an. GIS Studies for Groun.water Assessmen., Abu Zen.ma Area, West Sin.i, Egypt

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In.ern.tion.l Journ.l of Geoscien.es 2014年第9期5卷 882-907页

作者： Mohamed H. Khalil Khalid S. Ahmed Alaa Eldin.H. Eln.hry Alaa n. Hasan Geophysics Departmen. Faculty of Science Cairo University Giza Egypt Scien.ific Train.n. an. Con.in.ous Research Division National Authority for Remote Sensing and Space Sciences Cairo Egypt

The in.egration.between.advan.ed techn.ques for groun.water exploration.is n.cessary to protect an. to man.ge the vital resources. En.an.ed Thematic Mapper Lan.sat (ETM+) images, a geographic in.ormation.system (GIS), hydrological modelin. an. direct curren. (DC) resistivity geoelectrical techn.ques were used in.in.egrated man.er to iden.ify the groun.water poten.ialities in.the study area. The study area is approximately 1195 km2, located at the western.portion.of south Sin.i. From the results of the eight thematic layers as in.ut to GIS model, the suitable location. for dams could be estimated in.the two main.drain.ge basin. Matulla an. Tayiba.

关键词： Groun.water Electrical Method GIS Remote Sen.in.

Characterization.of Some Hydrogels Used in.Water Purification. Correlation.of Swellin. an. Free-Volume Properties

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Open.Journ.l of Organ.c Polymer Materials 2015年第3期5卷 79-88页

作者： M. Mohsen.n. A. Maziad E. Gomaa E. Hassan.Aly R. Mohammed Physics Departmen. Faculty of Science Ain Shams University Abbassia Cairo Egypt Polymer Chemistry Departmen.—n.tion.l Cen.er for Radiation.Research an. Techn.logy Atomic Energy Authority Naser City Egypt

In.this study, the main.objective is to develop a good chelation.an. ion.exchan.e hydrogel. This hydrogel is obtain.d by polymerization.of dimethyl amin. ethyl methacrylate (DMAEMA) an. acrylic acid (AAc) by gamma irradiation. for the purpose of separation.of some heavy an. toxic metals from water. UV spectroscopy is applied to determin. the metal ion.con.en.ration.before an. after treatmen.. The FTIR spectral an.lysis has iden.ified the bon. structure of PAAc, DMAEMA an. P (DMAEMA/AAc) hydrogels. Microstructure an. n.n.structure are in.estigated by mean. of SEM an. positron.an.ihilation.lifetime spectroscopy (PALS) respectively. A maximum swellin. percen. is foun. for 80/20 DMAEMA/AAc at free-volume hole size an. fraction.of 97?3 an. 3.4% respectively. The P (DMAEMA/AAc) an. PAAc hydrogels have been.applied for Cu+2, Co+2 an. n.+2 removals from aqueous solution., an. the factors affectin. the adsorption.capacity are determin.d. The adsorption.capacity of P (DMAEMA/AAc) is foun. to be higher than.the correspon.in. on.s PAAc. Its experimen.al results showed that, the maximum adsorption.of P (DMAEMA/AAc) after 24 h occurs at pH 7 with con.en.ration.of 250 ppm for n.+2 ion. an. at pH 5 with con.en.ration.of 40 ppm for Cu+2 an. Co+2 ion.. The adsorption.affin.ty of P (DMAEMA/AAc) hydrogel at differen. treatmen. con.act times is in.the followin. order n. > Cu > Co. However, the order becomes Co > n. > Cu by the variation.of the pH of the metal ion.solution.the variation.of its con.en.ration.leads to a differen. order of Cu > Co > n..

关键词： Hydrogels Irradiation Copolymerization FTIR PAL Water Decon.amin.tion

Average Rain.all Estimation. Methods Performan.e Comparison.in.the Brazilian.Semi-Arid

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Journ.l of Water Resource an. Protection 2014年第2期6卷 97-103页

作者： Fern.n.o D. Barbalho Gabriela F. n. da Silva Klebber T. M. Formiga Civil an. En.iron.en.al En.in.erin. School Federal University of Goiás Goiania Brazil Civil an. En.iron.en.al En.in.erin. School Federal University of Goiás Goiania Brazil Email: klebber.formiga@***

Con.iderin. the rain.all’s importan.e in.hydrological modelin., the objective of this study was the performan.e comparison. in.con.ergen.e terms, of techn.ques often.used to estimate the average rain.all over an.area: Thiessen.Polygon.(TP) Method;Reciprocal Distan.e Squared (RDS) Method;Krigin. Method (KM) an. Multiquadric Equation. (ME) Method. The comparison.was don. in.irectly, usin. GORE an. BALAn.E in.ex to assess the con.ergen.e results from each method by in.reasin. the rain.gauges den.ity in.a region. through six scen.rios. The Coremas/Mae D’água Watershed employed as study area, with an.area of 8385 km2, is situated on.Brazilian.semi-arid. The results showed the TP, as RDS an. ME techn.ques to be employed successfully to obtain.the average rain.all over an.area, highlightin. the MEM. On.the other han., KM, usin. two variograms models, had an.un.table behavior, poin.in. the prior study of data an. variogram’s choice as a n.ed to practical applyin..

关键词： Average Rain.all In.erpolation Techn.ques Multiquadric Equation. Reciprocal Distan.e Squared Method Semiarid Rain.all Thiessen.s Method

Modelin. Stream Flow Usin. SWAT Model in.the Bin. River Basin. In.ia

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Journ.l of Water Resource an. Protection 2020年第3期12卷 203-222页

作者： Fitsum T. Teshome Haiman.te K. Bayabil L. n. Thakural Fikadu G. Welidehan.a Departmen. of Plan. Scien.e College of Agriculture and Natural Resources Madda Walabu University Bale-Robe Ethiopia Departmen. of Agricultural an. Biological En.in.erin. Tropical Research and Education Center IFAS University of Florida Homestead FL USA Surface Water Hydrology Division National Institute of Hydrology Roorkee India

Un.erstan.in. watershed run.ff processes is critical for plan.in. effective soil an. water man.gemen. practices an. efficien.ly utilize available water resources. The main.objective of this study was to in.estigate the performan.e of the Soil an. Water Assessmen. Tool (SWAT) to simulate streamflow from the Bin. basin.in.the Madhya Pradesh state of In.ia. The SWAT model was calibrated an. validated on.a daily an. mon.hly basis usin. historical streamflow an. weather data from the Bin. basin. The Sequen.ial Un.ertain.y Fittin. (SUFI-2) techn.que in.the SWAT? Calibration.an. Un.ertain.y Procedures (SWAT-CUP) program was used to assess model un.ertain.ies. The SWAT model performed “satisfactory” an. “very good” in.simulatin. streamflow at daily an. mon.hly time steps, respectively. Model calibration.results showed that coefficien.s of determin.tion.(R2) values were 0.66 an. 0.96;while n.sh-Sutcliffe (n.E) values were 0.65 an. 0.94 for daily an. mon.hly simulation., respectively. The R2 values of daily an. mon.hly simulation. durin. model validation.were 0.65 an. 0.72, respectively while the respective n.E values were 0.58 an. 0.72. This study demon.trated that the SWAT model could be effectively used to simulate streamflow in.the Bin. river basin.

关键词： Modelin. Streamflow SWAT SWAT-CUP Bin. River Basin

Immun.histochemical An.lysis of Citrullin.-n.tric Oxide Cycle En.ymes an. Glutamin. Syn.hetase in.Differen. Region. of Brain.in.Epilepsy Rat Model

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n.uroscien.e & Medicin. 2014年第3期5卷 131-138页

作者： Mummedy Swamy In.an.n.rfirdaus Mat Zin.K. n. S. Sirajudeen.Zulkarn.in.Mustapha Chan.ran.Govin.asamy Departmen. of Chemical Pathology School of Medical Sciences Health Campus Universiti Sains MalaysiaKelantan Malaysia

The aim of this study was to determin. the immun.reactivity of n.uron.l an. in.ucible n.tric oxide syn.hetase, argin.n.succin.te syn.hetase, argin.n.succin.te lyase, glutamin. syn.hetase in.differen. region. of brain.in.rats of kain.c acid mediated epilepsy. Male Sprague-Dawley rats were used in.this study. The acute group an.mals were sacrificed after 2 hours an. the chron.c group an.mals were sacrificed after 5 days of a sin.le subcutan.ous in.ection.of kain.c acid (15 mg/kg body weight). The cerebral cortex, cerebellum an. brain.stem slices were fixed an. immun.histostain.d for the above en.ymes. Images were captured an. an.lyzed. In.acute group, argin.n.succin.te syn.hetase an. in.ucible n.tric oxide syn.hetase were in.reased in.cerebral cortex an. cerebellum, n.uron.l n.tric oxide syn.hetase in.reased in.cerebral cortex an. brain.stem, an. there was n. chan.e in.argin.n.succin.te lyase immun.reactivity compared to con.rol group. In.chron.c group, glutamin. syn.hetase was decreased an. all other en.ymes immun.reactivity was in.reased in.all the brain.region. tested. This study demon.trated the up-regulation.of citrul-lin.-n.tric oxide cycle en.ymes an. may con.ribute to en.an.in. recyclin. of citrullin. to argin.n. to support the in.reased production.of n.tric oxide in.epilepsy. The decreased glutamin. syn.hetase may in.rease glutamate in.chron.c epilepsy an. may lead to n.urodegen.ration.

关键词： Citrullin.-n.tric Oxide Cycle En.ymes Epilepsy Glutamin. Syn.hetase Immun.histochemistry Kain.c Acid Rat Brain

Taen.asis vs cysticercosis in.ection.routes

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Asian.Pacific Journ.l of Tropical Medicin. 2016年第6期9卷 599-600页

作者： Maria Teresa Galán.Puchades Departmen. of Cell Biology an. Parasitology Faculty of Pharmacy University of Valencia

Although cysticercosis caused by Taen.a solium(T. solium) is con.idered a n.glected disease, its life cycle has been.well kn.wn.for more than.two cen.uries. T. solium n.t on.y causes cysticercosis but also taen.asis in.human.. These two diseases have totally differen. in.ection.routes. To acquire taen.asis(the presen.e of the adult stage of T. solium in.the in.estin.), human. have to in.est the larval stage(cysticercus) that in.ects a variety of organ. an. viscera in.pigs, its in.ermediate hosts. Therefore, taen.asis is acquired when.eatin. raw or un.ercooked in.ected pork. The adult stage in.the human.in.estin. release eggs that con.ain.a hexacan.h embryo, the on.osphere. If human. acciden.ally in.est the eggs of T. solium, the released on.ospheres pen.trate the in.estin. an. become cysticerci. Therefore, cysticercosis is acquired by the in.estion.of eggs that con.amin.te water, vegetables, han.s etc. These facts should n.t be forgotten.to avoid misin.ormation.in.scien.ific publication..

关键词： Taen.asis Cysticercosis In.ection routes

Re-Laparotomy after Caesarean.Section.at Omdurman.Matern.ty Hospital-Khartoum, Sudan

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Open.Journ.l of Obstetrics an. Gyn.cology 2015年第8期5卷 448-454页

作者： Atif Bashir Fazari n. S. Eldeen.W. Mohammed M. Muror E. Gailii Reproductive an. Child Health Research Un.t University of Medical Sciences & Technology Khartoum Sudan Omdurman.Matern.ty Hospital Ministry of Health Khartoum Sudan Elhasahesa Teachin. Hospital Gezira Sudan

In.roduction. Caesarean.section.has avoidable morbidity which may lead to mortality especially in.developin. world. Caesarean.section.is a major operation.which should be performed with maximum care an. safety. Objectives: This study aimed to fin. in.iden.e, in.ication., procedures an. matern.l outcome of re-laparotomy after caesarean.delivery. Methods: This was a descriptive cross section.l prospective total coverage hospital based study con.ucted at Omdurman.Matern.ty Hospital from Jun. 2014 to Jan.ary 2015. Results: The in.iden.e for re-laparotomy after Caesarean.section.is (0.66%) an. the main.in.ication.for re-laparotomy is hemorrhagic even.s. Re-laparotomy outcome reported 22 cases (64.7%) alive an. well an. 6 cases (17.6%) alive with morbidity (ren.l failure an. massive blood tran.fusion.complication.) an. 6 cases (17.6%) of matern.l mortality main.y due to sepsis. Con.lusion. Re-laparotomy after Caesarean.section.is con.ributin. to morbidity an. matern.l mortality. The majority of re-laparotomy was don. after emergen.y Caesarean.section. Lacks of skills, experien.e;safety measures of perfection.an. in.ection.con.rol are poin.s to be con.ern.

关键词： Re-Laparotomy Caesarean Section Matern.l Morbidity Matern.l Mortality