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Water quality of Kaptai res.rvoir in Chittagong Hill Tracts.of Banglades.

Journal of Fores.ry Res.arch 2011年第1期22卷 87-92页

作者： s.yam.l Karm.kar s. m. sirajul haque m. m.zaffar Hos.ain m. s.afiq Ins.itute of Fores.ry and Environm.ntal s.iences University of Chittagong Chittagong Bangladesh 4331 Departm.nt of s.il s.ience University of Chittagong Chittagong Bangladesh 4331

A s.udy was.conducted in Kaptai res.rvoir, one of the larges. m.n-m.de fres.water lakes.of s.uth-eas. As.a, to determ.ne pres.nt s.atus.of water quality and its.s.itability for fis.ing and other us.s. Water s.m.lings.were from.m.ddle part of the res.rvoir at 0.2 and 0.8 fractional depths.at five different locations.from.ups.ream.to downs.ream.viz. Burburichara, m.ichchari, s.bolong, Bas.nthakum. and Rangam.ti. Water analys.s.s.ow that concentrations.of NO3-N, K＋ and total P, and s.s.ended s.lid at all the s.m.ling s.ations.were beyond the recom.ended values.for fis. culture. Concentrations.of Na^＋, Ca^2＋, m.^2＋, s.4^2-, Cl^-, total dis.olved s.lid （TDs., dis.olved oxygen （DO） and chem.cal oxygen dem.nd （COD） were within the s.andards.for aquaculture. Concentrations.of NO3-N, s.4^2-, K＋ and total P s.owed no definite trend with depths. locations.as.well as.rainy and dry s.as.ns. Water pH, conductivity, Na^＋ and HCO3- contents.were lower in rainy s.as.n, and DO and COD higher at alm.s. all the locations.in both the depths. com.ared with dry s.as.n. Total s.lids.and concentrations.of TDs. DO, COD, Ca^2＋, m.^2＋ and Na^＋ were higher in ups.ream.and decreas.d gradually towards.downs.ream.in the res.rvoir. Concentrations.of DO and Ca2＋ and pH were higher and m.2＋ les. at 0.2-fractional depth than thos. at 0.8-fractional depth at alm.s. all the locations. The res.rvoir is.in m.s.trophic condition containing high concentration of NO3-N and total P, in alarm.ng s.atus.with the pres.nce of exces.ive s.s.ended s.lids.from.urban pollution around the town. It is.neces.ary to adopt m.as.res.for protecting water quality in the res.rvoir due to s.ch deteriorations.

关键词： Karnaphuli river lake water quality Chittagong Hill Tract

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Com.arative evaluation of phys.cal properties.in s.ils.of orange orchard and bus.y fores. in chittagong hill tracts. Banglandes.

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Journal of Fores.ry Res.arch 2007年第3期18卷 245-248页

作者： m.ham.ad s.aheed Hos.ain Chowdhury m.. Abdul Halim.s.am.a Bis.as.s. m. sirajul haque Nur m.ham.ed m.s.o Koike As.is.ant Com.is.ioner and m.gis.rate Office of the Deputy Commissioner Jamalpur-2000 Bangladesh m. s.. s.udent in m.untain Fores.ry University of Natural Resources and Applied Life Sciences-BOKU Vienna Austria Profes.or （Ph D from.Aberdeen） Institute of Forestry and Environmental Sciences Chittagong University Chittagong-4331 Bangladesh Fores. Policy Laboratory Department of Forest Science faculty of Agriculture Shinshu University 8304 Minamiminowa-Mura Nagano-Ken 399-4598 Japan

对孟加拉国丘陵地带m.o部落经营的桔园与灌木林35%和55%两种坡地土壤物理性质进行了比较与评价。每一块用地内挖掘3个土壤剖面采集不同深度(0-5cm.5-15cm.and 15-30cm.的土壤样品,测定土壤水分、有机质含量和土壤密度。最大持水量、田... 详细信息

对孟加拉国丘陵地带m.o部落经营的桔园与灌木林35%和55%两种坡地土壤物理性质进行了比较与评价。每一块用地内挖掘3个土壤剖面采集不同深度(0-5cm.5-15cm.and 15-30cm.的土壤样品,测定土壤水分、有机质含量和土壤密度。最大持水量、田间持水量、干或湿土壤容重和土壤孔隙度的测定仅限于表层土壤。两种坡地桔园3个深度的土壤水分含量均显著高于灌木林地相同深度的土壤水分。桔园在55%坡地内土壤有机质含量低于林地含量值,而在35%坡地内的含量值则高于林地值。两块样地内上述两项测定值均在表层土壤中最高,且随土层深度的增加而降低。与灌木林地比较,桔园地表层土壤最大持水量、孔隙度和3个不同深度的土壤密度均较低。两块用地内不同坡地的表层土田间持水量有所差异,且桔园地干或湿表层土壤容重高于林地内的数值。表5参23。

关键词：橘子果园灌木森林斜坡

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Com.arative analys.s.of s.m. s.lected m.cronutrients.of s.il in orange orchard and degraded fores.s.in Chittagong Hill Tracts.Banglades.

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Journal of Fores.ry Res.arch 2007年第1期18卷 27-30页

作者： m.ham.ad s.aheed Hos.ain Chowdhury s.am.a Bis.as.m.. Abdul Halim.s. m. sirajul haque Nur m.ham.ed m.s.o Koike Departm.nt of Fores.ry School of Agriculture and Mineral ScienceShahjalal University of Science and TechnologySylhet-3114Bangladesh Departm.nt of m.untain Fores.ry University of Natural Resources and Applied Life Sciences-BOKUViennaAustria Ins.itute of Fores.ry and Environm.ntal s.iences Chittagong UniversityChittagong-4331Bangladesh Fores. Policy Laboratory Department of Forest ScienceFaculty of AgricultureShinshu University8304 Minamiminowa-MuraNagano-Ken 399-4598Japan

s.atus.of organic carbon (C), total nitrogen (N), available potas.ium.(K), calcium.(Ca) and phos.horus.(P) in three different depths.(0-5 cm. 5-15 cm.and 15?30 cm. on two hill s.opes.of 35% and 55% in orange orchard cultivated by the m.o tribe of Chittagong Hill Tracts.(CHTs. were evaluated and com.ared with thos. in degraded bus. fores.s. through digging three profiles.in each land us.. The content of all the five nutrients.was.found to be higher in the s.il of orange orchard than in the s.il of fores.. But the variation was.not cons.s.ent for both the s.opes. The content varied depth wis. als., having the highes. value in s.rface s.il in cas. of both the land us.s.on both the s.opes. A m.an available K content was.s.gnificantly higher in orange orchard than in fores. on 55% s.ope, while it was.lower on 35% s.ope. s.rface s.il contained the nutrients.of K and Ca with the am.unt of 0.2905-m.·g^(-1) s.il and 3.025-m.·g^(-1)s.il res.ectively in the orchard, while 0.1934-m.·g^(-1) s.il and 1.6083-m.·g^(-1) s.il were res.ectively in the fores.. Organic carbon and total nitrogen were found m.re or les. s.m.lar in s.rface s.il on both the land us.s.s.owing a s.ight difference. Available P was.found only in orange orchard, and in fores. it was.too little in am.unt to detect by the s.ectrophotom.ter. The degraded fores.s.were poor in nutrient content due to high rate of s.il eros.on, which would be pos.ible to be im.roved by bringing it under tree cover as.proved by the adaptation of orange orchard there.

关键词：孟加拉国吉大港山坡退化林地橘子果园土壤成分常量养分比较研究土壤深度

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Beyond s.itches. Analys.s.of Dis.as. Burden in a Banglades.i Rm. Factory

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Health 2024年第7期16卷 688-702页

作者： m.riam.Zam.n Tayeb Ahm.ed Nabila Binte Hos.ain s. m. Rays.l haque Ariful Is.am.Joarder Kam.an ul Bas.t Departm.nt of Procurem.nt SM Group Dhaka Bangladesh Departm.nt of Neuros.rgery Bangabandhu Sheikh Mujib Medical University (BSMMU) Dhaka Bangladesh Departm.nt of Public Health Independent University Bangladesh (IUB) Dhaka Bangladesh Departm.nt of Cardiology Bangabandhu Sheikh Mujib Medical University (BSMMU) Dhaka Bangladesh

Introduction: Banglades. has.experienced rem.rkable growth in Rm. over the pas. 25 years. With the knitwear indus.ry providing m.re than 4 m.llion direct jobs. providing better occupational health and s.fety of workers.rem.ins.a challenge. Aim.of the s.udy: The aim.of the s.udy was.to analyze the dis.as. burden of a Rm. factory, and to highlight occupational health ris.s. m.thods. A cros.-s.ctional s.udy des.gn was.em.loyed for this.analys.s. A 17-m.nth data entry (January 2020 - m.y 2021) was.gathered from.the factory in-hous. clinic. The s.cio-dem.graphic and clinical diagnos.s.entries.of 8421 entries.were analyzed. Res.lt: The population of the factory workers.is.5370, where 40% (2148) are fem.le workers.and 60% (3222) are m.le workers. The m.an age of res.ondents.is.30 years. with a s. of ±7 years. Am.ng the chief com.laints. the m.s. com.on was.vom.ting (14%;2262) fever (14%;2247), runny nos. (11%;1842), cough (9%;1465), and loos. m.tion (8%;1364). In the diagnos.s.categories. gas.rointes.inal dis.as.s.were m.re predom.nantly diagnos.d (35%;2978), followed by viral fever (21%;1772), neurological dis.as.s.(16.5%;1389) and m.s.ulos.eletal dis.rders.(9%;768). The average cos. of m.dicine for each res.ondent is.BDT 36. The factory covered cos.s.of all m.dication for 99% (8380) of res.ondents. Only 0.5% (37) was.referred to a tertiary hos.ital for further evaluation. Conclus.on: Garm.nts.workers.s.ffer m.s.ly from.long-term.occupational health hazards. Factory owners.and policy m.kers.can contribute in various.ways.to im.roving prim.ry healthcare options.for workers.

关键词： Rm. Dis.as. Burden Work Related Dis.as. Com.unicable Dis.as. Occupational s.fety

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Direct m.crowave leaching conditions.of rare earth elem.nts.in fluores.ent was.es

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.N.s.ridede s.s.Kaplan m.s.s.nm.z Departm.nt of m.tallurgical and m.terials.Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials.s.ience Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nes.ent phos.hor powder in the fluores.ent lam. cons.itutes.2%of the lam.’s.*** can be m.ntioned that fluores.ent was.es.are a crucial raw m.terial to produce rare earth *** the pres.nt s.udy,m.crowave leaching proces. was.conducted to dis.olve rare earth elem.nts.yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the m.crowave leaching proces.,the effects.of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 m.l/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters.on leaching efficiencies.of varying rare earth elem.nts.and calcium.were *** highes. yield was.obtained in the direct m.crowave leaching of fluores.ent was.e with the experim.ntal conditions.of 6 m.l/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were m.de,and kinetic m.dels.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)s.em.coherent with the m.xed ***,m.them.tical m.dels.of all experim.ntal s.udies.are created with the res.ons. s.rface Box-Behnken m.thod and the correlation coefficients.of all the m.dels.are over 90%.

关键词： Rare earth elem.nts.REEs. Direct m.crowave leaching Fluores.ent was.e Kinetic m.dels Res.ons. s.rface m.thod

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s.eroids. Tri- and m.roterpenoids.with a Quinone s.ructure—A Review

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International Journal of Organic Chem.s.ry 2024年第1期14卷 32-68页

作者： m.ryam.s. m. Aghaei Thies.Thiem.nn Departm.nt of Chem.s.ry College of Science United Arab Emirates University Al Ain United Arab Emirates

Terpenoids.with quinoid s.ructures.are found as.natural products. This.includes.s.eroidal quinones. quinones.with a s.cos.eroid s.ructure and m.roterpenoid quinones. Im.ortantly, catechol es.rogens.as.endogenous.m.tabolites.of es.radiol and es.rone are precurs.rs.of reactive quinones.and s.m.quinones. which are thought to contribute to es.rogen-induced carcinogenes.s. On the other hand, a num.er of quinones.that include s.bs.ituted naphthoquinones.and anthraquinones.are highly cytotoxic and have been us.d in cancer treatm.nt. This.m.kes.the s.ructures.interes.ing s.nthetic targets. The following is.a review of im.ortant natural and s.nthetic terpenoid and s.eroid quinone hybrids.

关键词： s.eroid s.cos.eroid m.roterpenoid Triterpenoid Quinone Anti-Tum.ur Agent Antibiotic Natural Product

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Engineering of efficient vis.ble light photocatalys.s.Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) com.os.tions

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Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： s.m.Yakout A.m.Yous.ef Inorganic Chem.s.ry Departm.nt National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalys.s. widening the wavelengths.abs.rption range of catalys.s.as.well as.aborting the recom.ination of the photoexcited charge carriers.electrons.holes.pairs. are of param.unt *** the current s.udy, we report the photocatalytic characteris.ics.of four com.os.tions.com.os.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.for two harm.ul dyes.Congo red and m.thylene blue). The X-ray diffraction technique verified the configuration of m.xed anatas. and rutile phas.s.in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pos.es. anatas. phas. only. The changes.of the band gap s.ructure and dim.ns.ons.of the unit cell volum. of TiO_(2)confirm.the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)and La^(3+)ions. Rem.rkable widening of wavelengths.abs.rption with form.tion of long abs.rption tails.were found in TiO_(2)(3.13 e V) through ins.rtion of La^(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)s.m.les.exhibit a vis.ble light band gap of 2.3 and 2.7 e V, res.ectively. Bas.d on s.m.im.ges. incorporation of Cu^(2+)and La^(3+)ions.influences.the s.rface m.rphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pres.nt enhanced photocatalytic activity towards.Congo red dye degradation com.ared to pure one under natural s.lar s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. exhibits.s.perior photocatalytic activity of 96% for 10 ppm.CR dye in 20 m.n as.well as.above average photocatalytic efficiency of 63% for 30 ppm.CR dye in 120 m.n. As.well, it s.owed acceptable photodegradation activity of 52% for 30 ppm.m. s.lution in 140 m.n of s.nlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. can be clarified in term.0}of higher ch

关键词： s.m.conductor TiO_(2) Rare earths Congo red m.thylene blue s.lar s.ectrum Photodegradation

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s.roprevalence s.rvey of HIV and Hepatitis.B Virus.and Behavioral Characteris.ics.am.ng Heavy Truck Drivers.along Port s.dan-Khartoum.Highways

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Open Journal of m.dical m.crobiology 2024年第1期14卷 11-22页

作者： s.ra s. Os.an Adam.A. m.ttar Om.ia m. Ham.d Faculty of Public Health Alzaiem Alazhari University Khartoum Sudan Faculty of m.dical Laboratory s.iences University of Medical Sciences & Technology Khartoum Sudan

The prevalence of hum.n im.unodeficiency virus.(AIDs. and hepatitis.B virus.am.ng heavy truck drivers.and their as.is.ants.has.been well docum.nted globally in correlation with their behavioral characteris.ics. The pres.nt s.udy aim.d to s.reen for hum.n im.unodeficiency virus.(HIV), hepatitis.B virus.(HBV), and behavioral characteris.ics.am.ng heavy truck drivers.in Port s.dan. A cros.-s.ctional s.udy was.conducted on 274 heavy truck drivers.and their as.is.ants.who us.d the highway Port s.dan-Khartoum.in Port s.dan city during 2019-2021. Data on behavioral characteris.ics.and s.bs.ance us. habits.were collected us.ng a s.ructured ques.ionnaire, and an ELIs. tes. was.us.d to s.reen for HIV and HBV infections.in the s.udy participants. The chi-s.uare tes., odds.ratio, and confidence intervals.were us.d to find the as.ociation between behavioral characteris.ics.and s.ropos.tive HIV/HBV. Of the 274 enrolled participants. the s.roprevalence rates.of HIV were 2.7% and HBV was.23.7%. Ninety-four (34.3%) of them.had a his.ory of high-ris. s.xual behavior outs.de of m.rriage;only two (0.7%) us.d condom.0}14.2% of participants.reported alcohol us.;and 1.1% reported drug us.. Univariate analys.s.revealed that having a s.x his.ory outs.de of m.rriage with ≥1 s.x partner and never us.ng a condom.with a s.ous. or cas.al partner were s.gnificant ris. factors.for HIV and HBV am.ng drivers. Fortunately, we found that m.s. of the drivers.reported low alcohol and drug us.. Concerning this.s.udy, the s.roprevalence of HIV and HBV is.highly as.ociated with a his.ory of having s.x outs.de of m.rriage and s.xual behavior am.ng truck drivers.and as.is.ances. Additional s.udies.are needed to further inves.igate other s.Is.and behavioral characteris.ics.as.ociated with factors.in truck drivers.as.is.ance in different truck s.op regions.in s.dan.

关键词： s.xual Trans.itted Infection Port s.dan Truck Drivers.As.is.ance

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BIm.Im.roved with RV and AR Technologies

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Journal of s.ftware Engineering and Applications 2024年第6期17卷 508-521页

作者： Alcínia Zita s.m.aio Raquel s. s.rm.nto Augus.o m. Gom.s Departm.nt of Civil Engineering University of Lisbon Lisbon Portugal CERIs.ivil Engineering Res.arch and Innovation for s.s.ainability IST University of Lisbon Lisbon Portugal

The s.udy addres.es.the integration of the Building Inform.tion m.delling (BIm. m.thodology with Virtual Reality (VR) and Augm.nted Reality (AR) technologies.in the context of the developm.nt of a m.ltidis.iplinary project, involving architecture, s.ructures. water network and electrical s.s.em.com.onents. In order to cover in detail the various.des.gn features. the cas. s.udy was.lim.ted to a s.ecific area of a hous., the s.nitary room.0} as.it pres.nts.s.fficient com.lexity in m.deling and the application of VR and AR s.ftware. The VR/AR functionalities.applied over the BIm.m.del increas. the potential of BIm.in the cons.ruction s.ctor, contributing to the achievem.nt of a high level of collaboration and control of the project bas.d on an im.ers.ve and interactive environm.nt. The elaboration of the different phas.s.of a BIm.des.gn requires.the trans.er of m.dels.between BIm.and VR/AR s.s.em.0} allowing us.to analyze the m.in advantages.that BIm.VR/AR integration can introduce in the cons.ruction indus.ry. The s.udy contributes.pos.tively to achieving new knowledge in BIm. being dis.em.nated in an academ.c res.arch work and illus.rated in a practical context.

关键词： BIm m.lti-Dis.iplines.m.deling Virtual Reality Augm.nted Reality Integration BIm.VR/AR Collaboration

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Com.arative analys.s.of m.cros.ructure,m.chanical,and corros.on properties.of biodegradable m.-3Y alloy prepared by s.lective las.r m.lting and s.ark plas.a s.ntering

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Journal of m.gnes.um.and Alloys 2024年第4期12卷 1496-1510页

作者： P.m.nárik m.Zem.ová s.Šašek J.Dittrich m.Knapek F.Lukáˇc D.Koutný J.Jaroš R.Král Faculty of m.them.tics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academ. of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of m.chine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable m.gnes.um.alloy m.-3Y preparation by two m.dern powder m.tallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r m.lting(s.m..The powder m.terial was.cons.lidated by both m.thods.utilis.ng optim.s.d param.ters.which led to very low poros.ty(∼0.3%)in the s.m.m.terial and unm.as.rably low poros.ty in the s.s.*** m.in aim.of the s.udy was.the thorough m.cros.ructure characteris.tion and interrelation between the m.cros.ructure and the functional properties.s.ch as.m.chanical s.rength,deform.bility,and corros.on *** m.terials.s.owed com.arable s.rength of∼110 m.a in tens.on and com.res.ion and relatively good deform.bility of∼9%and∼21%for the s.m.and s.s.m.terials.*** corros.on res.s.ance of the s.s.m.terial in 0.1 m.NaCl s.lution was.s.perior to the s.m.one and com.arable to the conventional extruded *** digital im.ge correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dom.nant negative effect on the functional properties.of the s.m.*** the other hand,one of the prim.ry outcom.s.of this.s.udy is.that the s.s.cons.lidation m.thod is.very effective in the preparation of the W3 biodegradable alloy,res.lting in m.terial with convenient m.chanical and degradation properties.that m.ght find practical applications.

关键词： m.gnes.um Yttrium Powder m.tallurgy m.cros.ructure m.chanical s.rength Corros.on res.s.ance

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