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Econom.cs.of the plant s.ecies.us.d in hom.s.ead agrofores.ry on an offs.ore s.ndwip Is.and of Chittagong Dis.rict, Banglades.

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Journal of Fores.ry Res.arch 2006年第4期17卷 285-288页

作者： R. U. m.m.n s. m. s. huda m. K. Hos.ain B. m. Khan Ins.itute of Fores.ry and Environm.ntal s.iences University of Chittagong Chittagong-4331 Bangladesh

This.s.udy was.perform.d in five villages.of s.ndwip Upazila, Chittagong dis.rict with a view to identify the tree res.urces. utilization pattern and econom.c return of m.jor fruit and tim.er tree s.ecies. Inform.tion collected from.a total of 60 hous.holds.ranging from.m.rginal, s.all, m.dium.and large categories. Num.er of plant s.ecies.increas.d with the increas. of hom.s.ead area. A total of 33 plant s.ecies.were recorded from.the hom.garden, of which 19 were fruit and 14 were tim.er tree s.ecies. Cons.derable num.er of vegetables.was.als. planted under the s.ade of the hom.s.ead trees. The inves.m.nt analys.s.s.owed that average benefit-cos. ratios.were greater than one, net pres.nt values.were pos.tive and internal rate of returns.were m.re than 10%. Long term.inves.m.nt on horticulture and tim.er tree s.ecies.is.highly profitable if s.ecies.like Artocarpus.heterophyllus. Cocos.nucifera, Tectona grandis.and s.ietenia m.crophylla are planted.

关键词：林粮间作果树用材树孟加拉国海岛家庭经营经济分析

Horizontal dis.ribution of ectom.corrhizal infection in Dipterocarpus.turbinatus.plantations.of Banglades.

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Journal of Fores.ry Res.arch 2006年第1期17卷 47-49页

作者： s. m. s. huda m. B. Uddin m. m. Haque m.A.U. m.idha m. K. Bhuiyan Ins.itute of Fores.ry and Environm.ntal s.iences University of Chittagong-4331 Bangladesh. Departm.nt of Botany Univers.ty of Chittagong-4331 Bangladesh.

Garjan （Dipterocarpus.turbinatus.Gaertn. F） is.a highly ectom.corrhizal tree s.ecies.growing in hilly areas.of Banglades.. The horizontal dis.ributions.ofectom.corrhizas.（ECm. in different dis.ances.（1, 2, 3 ＆ 4m. from.the tree bas. were determ.ned in 5, 10 and 20-year-old D. turbinatus.plantations.of Chittagong Univers.ty Cam.us.（CUC） in 2003, The ECm.infection （%） in roots.was.counted at three hill pos.tions.（top, m.d and bottom. for each of the plantations. s.m.les.of 1000 cm.3 rhizos.here s.il were collected from.underneath the trees.at different horizontal dis.ances. The percentage of infection at different dis.ances.and hill elevations.varied cons.derably. In 5 and 10-year-old plantations. the occurrence of infection （%） was.rapidly declined with increas.ng dis.ances. while in 20-year-old plantation, the infection increas.d s.arply with increas.ng dis.ances.from.the tree bas.. The highes. infection （81.33%） was.found at 4 m.dis.ance from.the tree at bottom.hill in 20-year-old plantation and the lowes. （55.33%） at the s.m. dis.ance at the top of the hill in 5-year-old plantation.

关键词： Dipterocarpus.turbinatus.plantation Garjan Ectom.corrhizas Horizontal Dis.ribution Infection Banglades.

施加磷肥和钾肥对苗圃内印度黄檀木生长和结瘤的影响(英文)

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Journal of Fores.ry Res.arch 2007年第4期18卷 279-282页

作者： s. m. s. huda m. s.jauddin s. s.afinat m. s. Uddin Ins.itute of Fores.ry and Environm.ntal s.iences University of Chittagong Chittagong-4331 Bangladesh Departm.nt of Fores.ry and Environm.ntal s.ience School of Agriculture and Mineral Sciences Shahjalal University of Science and Technology Sylhet-3114 Bangladesh

本文探测了无机肥(磷和钾)对苗圃内培养的印度黄檀生长和结瘤的影响。播种前,磷和钾肥以不同比例混合后与营养匮乏的自然林土壤混合,然后混合土再补以粪肥(混合土:粪肥=3:1)。出苗后60天时记录植株结瘤状况(结瘤数、形状、鲜重、干重和... 详细信息

本文探测了无机肥(磷和钾)对苗圃内培养的印度黄檀生长和结瘤的影响。播种前,磷和钾肥以不同比例混合后与营养匮乏的自然林土壤混合,然后混合土再补以粪肥(混合土:粪肥=3:1)。出苗后60天时记录植株结瘤状况(结瘤数、形状、鲜重、干重和颜色)和植株生长参数(枝条和根长及鲜重和干重、直径)。与对照相比,补充肥料的土壤显著地改变了植株生长和结瘤状况(Pm.时达到最大值,分别为62, 0.05g和0.07g。不同比例的补肥处理改变了结瘤形状和颜色,同时显著地影响了枝条和根长、直径、鲜重和干重等生长参数。研究揭示:苗圃内生长的黄檀,在贫瘠的自然林土壤中施以160kg/hm.磷钾肥并混以粪肥(混合土:粪肥=3:1)可使植株生长和结瘤的形成达最佳。

关键词：印度黄檀无机肥结瘤树苗生长苗圃

工业和住宅污泥对大叶相思种子萌发以及幼苗生长参数的影响(英文)

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Journal of Fores.ry Res.arch 2009年第4期20卷 331-336,I0005,I0006页

作者： m.. Lokm.n Hos.ain s. m. s. huda m. K. Hos.ain Ins.itute of Fores.ry and Environm.ntal s.iences Chittagong University

在孟加拉国吉大港大学林业与环境科学院苗圃内,评价了污泥对大叶相思种子萌发以及幼苗生长的作用。播种前,将污泥与营养匮乏的自然林土壤按不同比率混合,分别在播种后的第1,2和3个月时,记录种子萌发情况和幼苗生长参数(枝条和根系的长... 详细信息

在孟加拉国吉大港大学林业与环境科学院苗圃内,评价了污泥对大叶相思种子萌发以及幼苗生长的作用。播种前,将污泥与营养匮乏的自然林土壤按不同比率混合,分别在播种后的第1,2和3个月时,记录种子萌发情况和幼苗生长参数(枝条和根系的长度、直径、枝条的鲜重和干重、根和总的干物质量)。在播种前和幼苗采收后,分别测定各个处理的污泥-土壤混合物的理化参数(pH值、有机碳、氮、磷、钾),以及重金属含量(铬、镍、锰、镉、锌)。结果表明,与对照相比,污泥-森林土壤混合物中播种的种子萌发率和幼苗生长参数发生显著变化。土壤-污泥按2:1混合时,种子萌发率最高(90%),幼苗生长速率和生物量最大,有机碳和氮磷钾含量也最高。混有工业污泥的土壤中重金属含量要高于混有住宅污泥的土壤。在工业污泥土壤中,污泥-土壤按1:1混合时,重金属含量最高。据此推荐,在退化森林土壤中,土壤-污泥以2:1混合较适合大叶相思种子萌发和幼苗生长。

关键词：大叶相思萌发生长参数幼苗生长污泥

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

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

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

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

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