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Chinese Physics B 2017年第7期26卷 377-382页

作者： m A Ali m m Uddin m N I Khan F U Z Chowdhury S m hoque S I Liba Department of Physics Chittagong University of Engineering and Technology (CUET) materials Science Division Atomic Energy Center

A series of Ni0.6-x/2Zn0.4-x/2SnxFe2O4(x = 0.0, 0.05, 0.1, 0.15, 0.2, and 0.3)(NZSFO) ferrite composities have been synthesized from nano powders using a standard solid state reaction technique. The spinel cubic structure of the investigated samples has been confirmed by x-ray diffraction(XRD). The magnetic properties such as saturation magnetization(ms),remanent magnetization(mr), coercive field(Hc), and Bohr magneton(μ) are calculated from the hysteresis loops. The value of msis found to decrease with increasing Sn content in the samples. This change is successfully explained by the variation of A-B interaction strength due to Sn substitution in different sites. The compositional stability and quality of the prepared ferrite composites have also been endorsed by the fairly constant initial permeability(μ’) over a wide range of frequency. The decreasing trend of μ’ with increasing Sn content has been observed. Curie temperature TChas been found to increase with the increase in Sn content. A wide spread frequency utility zone indicates that the NZSFO can be considered as a good candidate for use in broadband pulse transformers and wide band read-write heads for video recording. The composition of x = 0.05 shows unusual results and the possible reason is also mentioned with the established formalism.

关键词： magnetic properties saturation magnetization permeability Curie temperature

Validation of basaltic glass adsorption capabilities from geothermal arsenic in a basaltic aquifer: A case study from Bjarnarflag power Station,Iceland

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Geoscience Frontiers 2019年第5期10卷 1743-1753页

作者： K.C. Weaver m.A. hoque S.m. Amin S.H. markússon A.P. Butler Department of Civil and Environmental Engineering Imperial College LondonLondonSW7 2BUUnited Kingdom School of Geography Environment and Earth SciencesVictoria University of WellingtonWellingtonNew Zealand School of Earth and Environmental Sciences University of PortsmouthPortsmouth PO1 3QLUnited Kingdom Gas Sustainability Technology Group Research and TechnologyProject Delivery and TechnologyPetronasMalaysia Landsvirkjun Háaleitisbraut 68103 ReykjavíkIceland

Arsenic is a carcinogen known for its acute toxicity to *** waters are commonly high in arsenic,as shown at the Bjarnarflag Power Plant,Iceland (w224 mg/kg of solvent).Development of geothermal energy requires adequate disposal of arsenic-rich waters into groundwater/geothermal *** outcome of arsenic transport models that assess the effect of geothermal effluent on the environment and ecosystems may be influenced by the sensitivity of hydraulic ***,previous such studies in Iceland do not consider the sensitivity of hydraulic parameters and thereby the interpretations remain *** we used the Lake myvatn basaltic aquifer system as a case study to identify the sensitive hydraulic parameters and assess their role in arsenic *** develop a one-dimensional reactive transport model (PHREEQC ver.2.),using geochemical data from Bjarnarflag,*** our model,arsenite (H3AsO3) was predicted to be the dominant species of inorganic arsenic in both groundwater and geothermal *** reduced arsenic concentration beloww5 mg/*** reduced the residual contamination below w0.4 mg/kg at 250 m along *** on our modelling,we found volumetric input to be the most sensitive parameter in the *** addition,the adsorption strength of basaltic glass was such that the physical hydrogeological parameters,namely: groundwater velocity and longitudinal dispersivity had little influence on the concentration profile.

关键词： Geothermal Groundwater Hydrogeochemistry Arsenic modelling

APPLICABILITY OF THE BEND DEVELOPmENT THEORY IN NATURAL ALLUVIAL RIVERS

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International Journal of Sediment Research 2002年第3期17卷 211-219页

作者： m.m.RAHmAN m.A.HAQUE m.m.hoque Assistant Professor Associate Professor Bangladesh Bangladesh University of Engineering and Technology(BUET) Dhaka-1000 Institute of WAter and Flood management(IWFm) the same as above.

The theoretical conditions for the bend development or attenuation have been reviewed and tested for a study reach of the meghna river. The field observations in the natural alluvial meander do not support the theories developed for bend development. The limitations of the theory to apply in the natural meandering river are discussed.

关键词： Theoretical conditions Bend development or attenuation The meghna River Natural meandering river

孟加拉国锡尔赫特都会市年龄12~16岁小学生中高血压的患病率及其危险因素

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中华高血压杂志 2020年第2期28卷 162-162页

作者：周卫(译) 叶鹏(摘、审校) Akther m Tabrez mS Ali mm Dey PR hoque m Alam ST 不详

血压是一种常见病,其死亡率和发病率都很高。高血压可能起源于儿童时期,除非经过特别的检查,否则难以被发现。全球化不但改变了生活方式,也让青少年暴露于更多的致病风险因素中(除了遗传因素),如缺乏体育锻炼、肥胖、非健康膳食、学业... 详细信息

血压是一种常见病,其死亡率和发病率都很高。高血压可能起源于儿童时期,除非经过特别的检查,否则难以被发现。全球化不但改变了生活方式,也让青少年暴露于更多的致病风险因素中(除了遗传因素),如缺乏体育锻炼、肥胖、非健康膳食、学业压力。早期诊断是控制、有效治疗高血压并预防并发症的重要手段。2014年1-6月,研究者进行了一项横断面描述性研究。根据纳入和排除标准,将锡尔赫特大都市的1000名12~16岁学龄儿童纳入研究。入选标准为锡尔赫特市所有12~16岁的学龄儿童,不包括12岁以下或16岁以上以及有任何系统性疾病的学龄儿童。研究表明,锡尔赫特市学龄儿童高血压患病率为0.70%,肥胖、高血压家族史、膳食习惯、缺乏体育锻炼与高血压显著相关。

关键词：系统性疾病高血压患病率高血压家族史膳食习惯危险因素早期诊断遗传因素学龄儿童

An Efficient Tide-Surge Interaction model for the Coast of Bangladesh

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China Ocean Engineering 2020年第1期34卷 56-68页

作者： m.mizanur RAHmAN Gour Chandra PAUL Ashabul hoque Department of mathematics Shahjalal University of Science&TechnologySylhet 3114Bangladesh Department of mathematics University of RajshahiRajshahi-6205Bangladesh

The numerical method of lines(mOLs)in coordination with the classical fourth-order Runge Kutta(RK(4,4))method is used to solve shallow water equations(SWEs)for foreseeing water levels owing to the nonlinear interaction of tide and surge accompanying with a storm along the coast of *** SWEs are developed by extending the body forces with tide generating forces(TGFs).Spatial variables of the SWEs along with the boundary conditions are approximated by means of finite difference technique on an Arakawa C-grid to attain a system of ordinary differential equations(ODEs)of initial valued in time,which are being solved with the aid of the RK(4,4)*** grid technique is adopted to solve coastal complexities closely with least computational cost.A stable tidal solution in the region of our choice is produced by applying the tidal forcing with the major tidal constituent m2(lunar semi-diurnal)along the southern open-sea boundary of the outer *** experimentations are carried out to simulate water levels generated by the cyclonic storm AILA along the coast of *** model simulated results are found to be in a reasonable agreement with the limited available reported data and observations.

关键词： Bangladesh coast shallow water equations method of lines tide-surge interaction islands tide generating forces inverse barometer

Strategies to assemble therapeutic and imaging molecules into inorganic nanocarriers

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Frontiers of materials Science 2022年第3期16卷 101-144页

作者： Sheikh Tanzina HAQUE mark m.BANASZAK HOLL Ezharul hoque CHOWDHURY Jeffrey Cheah School of medicine and Health Sciences Monash University MalaysiaJalan Lagoon SelatanBandar Sunway47500 Subang JayaSelangorMalaysia Department of Chemical and Biological Engineering Monash UniversityClaytonVictoria 3800Australia Health and Wellbeing Cluster Global Asia in the 21st Century(GA21)PlatformJeffrey Cheah School of Medicine and Health SciencesMonash University MalaysiaJalan Lagoon SelatanBandar Sunway47500 Subang JayaSelangorMalaysia

Inorganic nanocarriers are potent candidates for delivering conventional anticancer drugs,nucleic acid-based therapeutics,and imaging agents,influencing their blood half-lives,tumor targetability,and *** addition to the high surface area-to-volume ratio,they exhibit excellent scalability in synthesis,controllable shape and size,facile surface modification,inertness,stability,and unique optical and magnetic ***,only a limited number of inorganic nanocarriers have been so far approved for clinical applications due to burst drug release,poor target specificity,and *** overcome these barriers,understanding the principles involved in loading therapeutic and imaging molecules into these nanoparticles(NPs)and the strategies employed in enhancing sustainability and targetability of the resultant complexes and ensuring the release of the payloads in extracellular and intracellular compartments of the target site is of paramount ***,we will shed light on various loading mechanisms harnessed for different inorganic NPs,particularly involving physical entrapment into porous/hollow nanostructures,ionic interactions with native and surface-modified NPs,covalent bonding to surface-functionalized nanomaterials,hydrophobic binding,affinity-based interactions,and intercalation through co-precipitation or anion exchange reaction.

关键词： inorganic nanoparticle cancer ionic interaction covalent bonding affinity interaction intercalation

The changing landscape of mangroves in Bangladesh compared to four other countries in tropical regions

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Journal of Forestry Research 2014年第3期25卷 605-611页

作者： S.m.mijan Uddin A.T.m.Rafiqul hoque Saiful Arif Abdullah Institute of Forestry and Environmental Sciences University of Chittagong Institute for Environment and Development (LESTARI) National University of Malaysia (UKM)

Loss of mangroves and consequent habitat fragmentation is a major concern throughout the world’s tropical countries. Conversion of mangrove habitat due to aquaculture, agriculture, urbanization and industrialization, ecotourism, overlapping bureaucracy and conflicting policies is occurring at a striking rate. This paper reviews the trends of mangrove area changes in Bangladesh and compares them with four other countries in tropical regions that have significant mangrove areas. The rate of mangrove loss from the 1980 to 2005 was calculated using the compound interest rate formula for its explicit biological implication. In Bangladesh, the area of mangroves was found to have increased due to its higher accretion rate. In India the rate of mangrove loss had fallen. The rate of mangrove loss in malaysia in the 1990s （-0.008 ha＆#183;a-1） was higher than the 1980s （-0.004 ha＆#183;a-1）. In Indonesia, the rate decreased, from the 1980s （-0.018 ha＆#183;a-1） to the 1990s （-0.010 ha＆#183;a-1）. Finally in myanmar the rate of mangrove loss gradually accelerated. Aquaculture was found to be the common cause of mangrove conversion in the regions. Loss of mangroves is now a prominent global issue, associated with the loss of biodiversity, deterioration of habitat integrity, climatic changes, the amount of carbon sequestration, and resulting sea-level rise. Therefore, a systematic evaluation of these environmental impacts is prerequisite to realize sustainable mangrove management.

关键词： mangrove loss accretion aquaculture mangrove landscape land-use change.

Application of SWAN model for storm generated wave simulation in the Canadian Beaufort Sea

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Journal of Ocean Engineering and Science 2020年第1期5卷 19-34页

作者： md.Azharul hoque William Perrie Steven m.Solomon Natural Resources Canada Bedford Institute of OceanographyDartmouthNova Scotia B2Y 4A2Canada Fisheries and Ocean Canada Bedford Institute of OceanographyDartmouthNova Scotia B2Y 4A2Canada

The wave model SWAN(Simulating WAves Nearshore)is implemented for the Canadian Beaufort Sea and storm generated waves are investigated through comparisons between in situ buoy observations and numerical *** are performed for four storms using the SWAN wave *** specifically use SWAN’s non-stationary and two-dimensional modes in a fine resolution nested domain within a coarse resolution *** established whitecapping formulations in SWAN are examined;one is dependent on mean spectral wave steepness and the other is on local spectral *** simulations in the shallow fine resolution domain also consider the effects of bottom friction and nonlinear triad *** the Beaufort Sea study area,wave simulations in which the white capping formulation is dependent on local spectral steepness are better than those where the dependency is on mean spectral steepness;however implementation of bottom friction term and triad mechanisms in the present study does not lead to any notable enhancement in the simulations.

关键词： Arctic Ocean Beaufort Sea mackenzie delta Storm waves SWAN.

Effect of different additives on the phase separation behavior and thermodynamics of p-tert-alkylphenoxy poly (oxyethylene) ether in absence and presence of drug

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1110-1118页

作者： marzia Rahman md. Anamul hoque mohammed Abdullah Khan malik Abdul Rub Abdullah m. Asiri Department of Chemistry Jahangirnagar University Savar Dhaka 1342 Bangladesh Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia Center of Excellence for Advanced materials Research King Abdulaziz UniversityJeddah 21589 Saudi Arabia

Cloud point （CP） determinations of 4-（1,1,3,3-tetramethylbutyl）phenyl-polyethylene glycol （TX-100 （nonionic surfactant）） was carried out in aqueous as well as in the attendance of drug （ceftriaxone sodium trihydrate （CFT））/（CFT ＋ different inorganic salts） and discussed thoroughly. Nonionic surfactants are employed exten- sively in different formulations. In aqueous solution, the values of CP of TX-100 are obtained to increase by means of enhancing of their concentration in the solution. The CP values of TX-100 solutions were found to de- crease in the presence of drug and their values decrease more with rising concentrations of the drug. The values of CP of CFT and TX-100 mixtures were found to further decrease in the attendance of inorganic salts in compar- ison to their absence. The effect of different sodium salts in decreasing CP values of TX-100 was achieved in the following order： NaCO3 〉 Na2SO4 〉 NaCl. However, in the case of potassium and ammonium salts, the decreasing order obtained is K2SO4 〉 KCO3 〉 KCI and （NH4）2SO4 〉 Na2CO3 〉 NH4Cl respectively. Various thermodynamic pa- rameters for example standard free energy （△G c）, standard enthalpy （△H c） as well as standard entropy （△S c） changes of phase separation were also evaluated and discussed in detail on the basis of their behavior.

关键词： Cloud point TX-100 Ceftriaxone sodium trihydrate Inorganic salts Thermodynamic parameters

Interaction of tetradecyltrimethylammonium bromide with bovine serum albumin in different compositions: Effect of temperatures and electrolytes/urea

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Chinese Journal of Chemical Engineering 2021年第1期34卷 279-287页

作者： Joynal Abedin Shamimmahbub mohammad majibur Rahman Anamul hoque Dileep Kumar Javed masood Khan Ahmed m.El-Sherbeeny Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Chemistry&Physics Gono BishwabidyalaySavarDhaka 1344Bangladesh Department of Environmental Sciences Jahangirnagar UniversitySavarDhaka 1342Bangladesh 4 Division of Computational Phys ics Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh CityViet Nam Faculty of Applied Sciences Ton Duc Thang UniversityHo Chi Minh CityViet Nam Department of Food Science and Nutrition Faculty of Food and Agricultural SciencesKing Saud University2460Riyadh 11451Saudi Arabia Industrial Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia

Herein,the interaction of a protein,bovine serum albumin(BSA),with tetradecyltrimethylammonium bromide(TTAB,a cationic surfactant),has been investigated using the conductivity measurement technique in pure water and some sodium salts(NaCl,Na_(2) SO_(4),Na_(2) CO_(3), and Na_(3) PO_(4)) solutions at temperature range of 295.15-320.15 *** reveal that,in the plot of specific conductivity versus the concentration of TTAB,only a single critical micelle concentration(cmc) was found for the TTAB+BSA mixed system in all solvents media *** addition of BSA in aqueous TTAB solution,the value of cmc undergoes a change from its pure form,which indicates the presence of strong interaction operating between the BSA and TTAB *** aqueous system,the cmc values of the TTAB+BSA mixtures are obtained higher compared to the values found for single TTAB surfactant However,the addition of salt decreases the cmc value of mixed TTAB+BSA *** values of cmc of the BSA+TTAB mixed system at 310.15 K and 1.00 mmol·kg^(-1) ionic strength of salt followed the order:cmc_(Na_(2) CO_(3))> Cmcc_(Na_(3) PO_(4))> cmcNaCl>cmC_(Na_(2) SO_(4)).The cmc values of TTAB+BSA mixture were found to be lowered in urea solution within the concentrations *** values of degree of dissociation(α) and fraction of counter ion binding(β) were found to be dependent on additives and *** free energy of micellization(AGm) is negative for all the systems,which manifests that the micellization phenomenon is energetically *** enhancement of the negative value of △G_(m)^(0) in aqueous salt solutions reveals an increase of spontaneity of the TTAB+BSA micellization *** values of △G_(m)^(0) also reveal that the spontaneity of micelle formation is enhanced at higher temperatures in all media *** values of free energy of transfer(△G_(m,t)^(o)) were also determined for numerous solvent media used in the present study and described with appropriate reasoning.

关键词： TTAB BSA Conductivity Electrolyte Exothermic interaction