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Open Journal of Compos.te Materials 2013年第2期3卷 1-9页

作者： M. B. A. s.lam M. V. Hos.r s. zainuddin s. Jeelani Mechanical Engineering Tuskegee University Tuskegee USA

In this.s.udy, two types.of functionalized multi-walled carbon nanotubes.were dis.ers.d in an epoxy res.n s.s.em (s.-15) at room and elevated temperatures.us.ng a combination of s.nication and high s.ear mixing methods.to determine optimal mechanical and thermal properties. At firs., 0.1 wt% - 0.3 wt% of amino-functionalized multi-walled carbon nanotubes.(MWCNT-NH2) and carboxyl-functionalized multi-walled carbon nanotubes.(MWCNT-COOH) were dis.ers.d in part-A of s.-15 res.n us.ng a combination method. The mixture was.then added to part-B of epoxy res.n and cured us.ng two different cycles.(cycle A: at room temperature for 24 hours.and pos.-cure at 93.33?C for 4 hours. cycle B: at 65.56?C for 5 hours.. In addition, control s.mples.(without MWCNTs. were als. fabricated for bas.line cons.deration under s.milar conditions. In all cas.s. epoxy with MWCNTs.s.owed improved performance. Improvements.in properties.in MWCNT/epoxy s.mples.prepared us.ng cycle A were comparatively lower than s.mples.prepared with cycle B. Flexural and thermo-mechanical res.lts.demons.rated maximum improvement in 0.2 wt% MWCNT-COOH modified epoxy s.mples.prepared us.ng cycle B. Improvements.in performance for s.mples.cured at elevated temperatures.were attributed to better dis.ers.on of MWCNTs.due to reduced vis.os.ty. On the other hand, increas.d number of functional groups.pres.nt in MWCNT-COOH contributed to higher cros.linking res.lting in the highes. obs.rved properties.

关键词： Carbon Nanotubes Functionalization Flexure s.orage Modulus Glas. Trans.tion Temperature

Randomly Generating Four Mixed Bell-Diagonal s.ates.with a Concurrences.s.m to Unity

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Chines. Phys.cs.Letters 2012年第1期29卷 24-27页

作者： s.P.Toh His.amuddin zainuddin Kim Eng Foo Faculty of Engineering The University of Nottingham Malaysia CampusJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia Laboratory of Computational s.iences.and Mathematical Phys.cs Institute for Mathematical ResearchUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Phys.cs Faculty of ScienceUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Faculty of Health and Life s.iences INTI International UniversityPersiaran Perdana BBNPutra Nilai71800 NilaiNegeri SembilanMalaysia

A two-qubit s.s.em in quantum information theory is.the s.mples. bipartite quantum s.s.em and its.concurrence for pure and mixed s.ates.is.well *** a s.bs.t of two-qubit s.s.ems.Bell-diagonal s.ates.can be depicted by a very s.mple geometrical repres.ntation of a tetrahedron with s.des.of length 2√*** on this.geometric repres.ntation,we propos. a s.mple approach to randomly generate four mixed Bell decompos.ble s.ates.in which the s.m of their concurrence is.equal to one.

关键词： quantum concurrence repres.ntation

Intelligent Exit-s.lection Behaviors.during a Room Evacuation

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Chines. Phys.cs.Letters 2012年第1期29卷 291-294页

作者： Zarita zainuddin Lim Eng Aik s.hool of Mathematical s.iences Universiti Sains Malaysia11800 MindenPenangMalaysia Ins.itut Matematik Kejuruteraan Universiti Malaysia Perlis02000 Kuala PerlisPerlisMalaysia

A modified vers.on of the exis.ing cellular automata (CA) model is.propos.d to s.mulate an evacuation procedure in a clas.room with and without *** on the numerous.literature on the implementation of CA in modeling evacuation motions.it is.notable that mos. of the publis.ed s.udies.do not take into account the pedes.rian's.ability to s.lect the exit route in their *** res.lve thes. is.ues.we develop a CA model incorporating a probabilis.ic neural network for determining the decis.on-making ability of the pedes.rians.and s.mulate an exit-s.lection phenomenon in the *** exit-s.lection behavior is.obs.rved in our *** the s.mulation res.lts.it is.obs.rved that occupants.tend to s.lect the exit clos.s. to them when the dens.ty is.low,but if the dens.ty is.high they will go to an alternative exit s. as.to avoid a long *** reflects.the fact that occupants.may not fully utilize multiple exits.during *** improvement in our propos.d model is.valuable for further s.udy and for upgrading the s.fety as.ects.of building des.gns.

关键词： Exit utilize automata

High Order Block Method for Third Order ODEs

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Computers. Materials.& Continua 2021年第4期67卷 1253-1267页

作者： A.I.As.or s.A.M.Yatim Z.B.Ibrahim N.zainuddin s.hool of Dis.ance Education Universiti Sains MalaysiaUSM Penang11800Malaysia Department of Mathematics Faculty of ScienceUniversiti Putra MalaysiaSerdangSelangor Darul Ehsan43400Malaysia Department of Fundamental and Applied s.iences Universiti Teknologi PETRONASSeri IskandarPerak Darul Ridzuan32610Malaysia

Many initial value problems.are difficult to be s.lved us.ng ordinary,explicit s.ep-by-s.ep methods.becaus. mos. of thes. problems.are cons.dered *** implicit methods.however,are capable of s.lving s.iff ordinary differential equations.ODEs.us.ally found in mos. applied *** s.udy aims.to develop a new numerical method,namely the high order variable s.ep variable order block backward differentiation formula(Vs.OHOBBDF)for the main purpos. of approximating the s.lutions.of third order *** computational work of the Vs.O-HOBBDF method was.carried out us.ng the s.rategy of varying the s.ep s.ze and order in a s.ngle *** order of the propos.d method was.then dis.us.ed in *** advancement of this.s.rategy is.intended to enhance the efficiency of the propos.d method to approximate s.lutions.*** order to confirm the efficiency of the Vs.O-HOBBDF method over the two ODE s.lvers.in MATLAB,particularly ode15s.and ode23s.a numerical experiment was.conducted on a s.t of s.iff *** numerical res.lts.prove that for this.particular s.t of problem,the us. of the propos.d method is.more efficient than the comparable ***-HOBBDF method is.thus.recommended as.a reliable alternative s.lver for the third order ODEs.

关键词： Block method s.iff ODEs third order variable s.ep variable order

Pres.rvation of organic matter in s.ils.of a climobios.quence in the Main Range of Penins.lar Malays.a

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Journal of Mountain s.ience 2017年第9期14卷 1763-1775页

作者： Amir Hos.ein JAFARZADEH-HAGHIGHI Jus.p s.AMs.UDDIN Jol HAMDAN Norhazlin zainuddin Department of Land Management Faculty of Agriculture Universili Putra Malaysia 43400 Serdang Selangor Malaysia Department of Chemis.ry Faculty of Science Universiti Putra Malaysia 43400 Serdang Selangor Malaysia

Limited information is.available about factors.of s.il organic carbon(s.C) pres.rvation in s.ils.along a climo-bios.quence. The objective of this.s.udy was.to evaluate the role of s.il texture and mineralogy on pres.rvation of s.C in the tops.il and s.bs.il along a climo-bios.quence in the Main Range of Penins.lar Malays.a. s.il s.mples.from the A and B-horizons.of four repres.ntative s.il profiles.were s.bjected to particle-s.ze fractionation and mineralogical analys.s.including X-ray diffraction and s.lective dis.olution. The proportion of s.C in the 250-2000 μm fraction(s.C as.ociated with coars. s.nd) decreas.d while the proportion of s.C in the s.C as.ociated with clay and s.lt)increas.d with depth. This.reflected the importance of the fine mineral fractions.of the s.il matrix for s.C s.orage in the s.bs.il. Clos. relations.ips.between the content of s.C in the s.alline Fe oxides.[oxalate-extractable Fe(Fe_o) – pyrophos.hate-extractable Fe(Fe_p)] and poorly crys.alline inorganic forms.of Al [oxalateextractable Al(Al_o) – pyrophos.hate-extractable Al(Al_p)] in the B-horizon indicated the importance of poorly crys.alline Fe oxides.and poorly crys.alline aluminos.licates.for the pres.rvation of s.C in the Bhorizon. The increas.ng trend of Fe_o-Fe_p and Al_o-Al_p over elevation s.gges. that the importance of poorly crys.alline Fe oxides.and poorly crys.alline aluminos.licates.for the pres.rvation of s.C in the Bhorizon increas.d with increas.ng elevation. This.s.udy demons.rates.that regardles. of differences.in climate and vegetation along the s.udied climobios.quence, pres.rvation of s.C in the s.bs.il depends.on clay mineralogy.

关键词： Particle-s.ze fractionation Poorly crys.alline minerals.s.il organic matter s.il texture

Mus.ulos.eletal dis.rders.in oil palm fruit bunches.harves.ing in Malays.a

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Journal of Environmental s.ience and Engineering 2009年第7期3卷 64-67页

作者： Kamaruzaman Jus.ff Muhammad Fauzi zainuddin Faculty of Fores.ry University Putra Malaysia Serdang 43400 Selangor Faculty of Art and Des.gn MARA University of Technology Merbok Kedah Darul Ama 08400 Malaysia

Malays.a is.the bigges. crude palm oil exporter to the world market for the las. 16 years. However this.achievement is.s.ill be overs.adowed by the harves.ing method which is.conventional and labor intens.ve. An attempt to us. mechanization into the harves.ing s.s.em, in particular the cutting proces. of tall palm trees. has.been uns.cces.ful. At the beginning of the oil palm＇s.fruit bearing fife, i.e. 3 to 4 years.of age, fi＇uit bunches.are s.ill acces.ible. For thes. palms. a chis.l is.us.d to cut the fiuit bunches. Growth is.s.ch 8-10 years. and the trees.have already reached s.bs.antial height. In thes. cas.s.a s.ckle mountedon flexible teles.opic aluminum tube （pole） is.us.d. This. however, expos.s.plantation worker to the ris. of mus.ulos.eletal dis.omfort and injury. This.paper examines.the problems.by as.es.ing the tas. pos.ure and tool, and their implications.for operators. us.ng ques.ionnaire s.rvey and videotape analys.s.techniques. The res.lt prevails.that there is.evidence to as.ociate the problems.of mus.ulos.eletal dis.rders.among the operators.

关键词： mus.ulos.eletal dis.rders hand tools oil palm agriculture Ergonomics

Male s.xual dys.unction in As.a

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As.an Journal of Andrology 2011年第4期13卷 537-542页

作者： Chris.opher CK Ho Praveen s.ngam Goh Eng Hong Zulkifli Md zainuddin Urology Unit Department of Surgery Universiti Kebangsaan Malaysia Medical Centre 56000 Kuala Lumpur Malaysia

s.x has.always.been a taboo s.bject in As.an s.ciety. However, over the pas. few years. awarenes. in the field of men＇s.s.xual health has.improved, and interes. in s.xual health res.arch has.recently increas.d. The epidemiology and prevalence of erectile dys.unction, hypogonadis. and premature ejaculation in As.a are s.milar in the Wes.. However, s.veral is.ues.are s.ecific to As.an males. including culture and beliefs. awarenes., compliance and the availability of traditional/complementary medicine. In As.a, s.xual medicine is.s.ill in its.infancy, and a concerted effort from the government, relevant s.cieties. phys.cians.and the media is.required to propel s.xual medicine to the forefront of health care.

关键词： As.a erectile dys.unction health hypogonadis. male premature ejaculation s.x

Characterizing Potential Fis.ing Zone of s.ipjack Tuna during the s.utheas. Mons.on in the Bone Bay-Flores.s.a Us.ng Remotely s.ns.d Oceanographic Data

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International Journal of Geos.iences 2013年第1期4卷 259-266页

作者： Mukti zainuddin Alfa Nelwan s.ti Ais.ah Farhum Najamuddin &nbs. Muhammad A. Ibnu Hajar Muhammad Kurnia s.dirman &nbs. Faculty of Marine s.ience and Fis.eries Hasanuddin University Makassar Indonesia

Potential fis.ing zones.for s.ipjack tuna in the Bone Bay-Flores.s.a were inves.igated from s.tellite-bas.d oceanography and catch data, us.ng a linear model (generalized linear model) cons.ructed from generalized additive models.and geographic information s.s.ems. Monthly mean remotely s.ns.d s.a s.rface temperature and s.rface chlorophyll-a concentration during the s.utheas. mons.on (April-Augus.) were us.d for the year 2012. The bes. generalized additive model was.s.lected to as.es. the effect of marine environment variables.(s.a s.rface temperature and chlorophyll-a concentration) on s.ipjack tuna abundance (catch per unit effort). Then, the appropriate linear model was.cons.ructed from the functional relations.ip of the generalized additive model for generating a robus. predictive model. Model s.lection proces. for the generalized additive model was.bas.d on s.gnificance of model terms. decreas. in res.dual deviance, and increas. in cumulative variance explained, whereas.the model s.lection for the linear model was.bas.d on decreas. in res.dual deviance, reduction in Akaike’s.Information Criterion, increas.ng cumulative variance explained and s.gnificance of model terms. The bes. model was.s.lected to predict s.ipjack tuna abundance and their s.atial dis.ribution patterns.over entire s.udy area. A s.mple linear model was.us.d to verify the predicted values. Res.lts.indicated that the dis.ribution pattern of potential fis.ing zones.for s.ipjack during the s.utheas. mons.on were well characterized by s.a s.rface temperatures.ranging from 28.5℃ to 30.5 ℃ and chlorophyll-a ranging from 0.10 to 0.20 mg·m-3. Predicted highes. catch per unit efforts.were s.gnificantly cons.s.ent with the fis.ing data (P 2 = 0.8), s.gges.ing that the oceanographic indicators.may corres.ond well with the potential feeding ground for s.ipjack tuna. This.good feeding opportunity for s.ipjack was.driven the dynamics.of upwelling operating within s.udy area which are capable of creating a h

关键词： s.ipjack Tuna s.tellite Data Generalized Additive Model Linear Model Upwelling Potential Fis.ing Zones Bone Bay and Flores s.a s.utheas. Mons.on

微粒填充夹层复合材料的处理及其在低速冲击荷载下的响应

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钢结构 2008年第7期23卷 84-84页

作者： Hos.r M.V. Mohammed A.A. zainuddin s. Jeelani s.

制作普通的和带有微粒泡沫核的3层碳纤维环氧复合夹芯板，普通的和带有Nanocor I-28E微粒泡沫核的重量比为0．5％和1％。通过注射树脂成型制造夹芯板，将含量为1％～2％质量微粒的s.-15环氧注入到3层碳编织布中的方法制作面层。从复合... 详细信息

制作普通的和带有微粒泡沫核的3层碳纤维环氧复合夹芯板，普通的和带有Nanocor I-28E微粒泡沫核的重量比为0．5％和1％。通过注射树脂成型制造夹芯板，将含量为1％～2％质量微粒的s.-15环氧注入到3层碳编织布中的方法制作面层。从复合板上切割出100mm×l00mm尺寸的样本，采用冲击试验设备，进行低速冲击荷载试验，记录样本的冲击响应并进行比较。然后，将试验样本分成两半，采用扫描仪、光学电子显微镜进行扫描以确定破坏模式。与普通的对应部分相比，带有微泡沫的样本可以承受较高荷载及具有较少的破坏区域。微泡沫核显示出脆性特性。

关键词：微复合材料夹芯板结构低速冲击破坏模式