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Insights into the physical properties and anisotropic nature of ErPdBi with an appearance of low minimum thermal conductivity

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Chinese Physics B 2021年第1期30卷 398-406页

作者： S K Mitro R Majumd.r K M hossain md.Zahid Hasan md.Emran hossain M A Hadi Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University Jamalpur-2012Bangladesh Physics Discipline Khulna UniversityKhulna-9208Bangladesh Department of Materials Science and Engineering University of RajshahiRajshahi-6205Bangladesh Department of Electrical and Electronic Engineering International Islamic University ChittagongKumiraChittagong-4318Bangladesh Department of Physics University of RajshahiRajshahi6205Bangladesh

We theoretically study the structural, elastic and optical properties of Er Pd Bi together with its anisotropic behaviors using density functional theory. It is observed that Er Pd Bi satisfies the Born stability criteria nicely and possesses high quality of machinability. The anisotropic behavior of Er Pd Bi is reported with the help of theoretical anisotropy indices incorporating 3 D graphical presentation, which suggests that Er Pd Bi is highly anisotropic in nature. It is noticed that the minimum thermal conductivity is very low for Er Pd Bi compared to the several species. This low value of minimum thermal conductivity introduces the potentiality of Er Pd Bi in high-temperature applications such as thermal barrier *** addition, deep optical insights of Er Pd Bi reveal that our material can be used in different optoelectronic and electronic device applications ranging from organic light-emitting diodes, solar panel efficiency, waveguides etc. to integration of integrated circuits. Therefore, we believe that our results will provide a new insight into high-temperature applications and will benefit for the development of promising optoelectric devices as well.

关键词： Er Pd Bi minimum thermal conductivity anisotropy density functional theory(DFT)

Side-channel attacks and learning-vector quantization

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Frontiers of Information Technology & Electronic Engineering 2017年第4期18卷 511-518页

作者： Ehsan SAEEDI Yinan KONG md. Selim hossain Department of Engineering Macquarie University Sydney Australia

The security of cryptographic systems is a major concern for cryptosystem designers, even though cryptography algorithms have been improved. Side-channel attacks, by taking advantage of physical vulnerabilities of cryptosystems, aim to gain secret information. Several approaches have been proposed to analyze side-channel information, among which machine learning is known as a promising method. Machine learning in terms of neural networks learns the signature （power consumption and electromagnetic emission） of an instruction, and then recognizes it automatically. In this paper, a novel experimental investigation was conducted on field-programmable gate array （FPGA） implementation of elliptic curve cryptography （ECC）, to explore the efficiency of side-channel information characterization based on a learning vector quantization （LVQ） neural network. The main characteristics of LVQ as a multi-class classifier are that it has the ability to learn complex non-linear input-output relationships, use sequential training procedures, and adapt to the data. Experimental results show the performance of multi-class classification based on LVQ as a powerful and promising approach of side-channel data characterization.

关键词： Side-channel attacks Elliptic curve cryptography Multi-class classification Learning vector auantization

Proteomic Profiling and Protein-Protein Interaction Network Reveal the Molecular Mechanisms of Susceptibility to Drought Stress in Canola(Brassica napus L.)

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Phyton-International Journal of Experimental Botany 2022年第7期91卷 1403-1417页

作者： Reza Shokri-Gharelo Ali Bandehagh Mohammad anwar hossain Department of Plant Breeding and Biotechnology University of TabrizTabriz51368Iran Department of Genetics and Plant Breeding Bangladesh Agricultural UniversityMymensingh2202Bangladesh

Drought stress is one of the most important abiotic stresses that plants face frequently in *** drought conditions,many morphological,physiological,and molecular aspects of plants are changed and as a result plants experience a remarkable reduction in growth,yield,and *** expand our understanding of the molecular basis of the plant response to drought stress,the proteomic profile and protein-protein network of canola(Brassica napus L.)were *** focus was to show molecular mechanisms related to canola susceptibility to drought *** experiment used a completely randomized design,implemented in a hydroponic system under greenhouse *** impose drought stress,plants were exposed to Hoagland’s solution supplemented with polyethylene glycol(PEG)6000 for 7 *** drought stress resulted in 161reproducible protein spots in twodimensional electrophoresis of canola *** t-student test showed 21 differentially abundant proteins(DAP),of which 2 and 19 were up and down accumulated,*** spots identified as 1-aminocyclopropane-1-carboxylate oxidase and D-2-hydroxyglutarate dehydrogenase showed an increased abundance of 2.11 and 1.77,*** extended protein-protein interaction of differentially abundant proteins and KEGG analysis showed 47 pathways directly and indirectly associated with canola response to drought *** with increased abundance were associated with amino acid and signaling processes,whereas DAPs with decreased abundance were mostly connected with pathways responsible for energy *** results of the study will help to elucidate further the molecular events associated with the susceptibility to drought stress in canola.

关键词： Abiotic stress differentially abundant protein molecular function proteomics susceptibility

A Comparison between Canadian and Indian Healthcare Focusing on Financing

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Health 2021年第6期13卷 677-684页

作者： md. Shakhawat hossain Saint Paul University Ottawa Canada

Healthcare is significant for a person’s comfort as well as the economic benefit of a country. Irrespective of ability, everyone should have access to health care while anyone is sick. This paper aims to compare Canadian and Indian health care highlighting the financing system and people’s benefits. In Canada, universal health care means everyone, including citizens, permanent residents, and visitors, can have health care from the government. Canadian healthcare pays the doctors based on the services they provide the patients. In India, 80% of health financing comes from private sources through out-of-pocket and private insurance. In India, government-paid doctors can do private practice beyond their office hours;any patient can go to any doctor without the general practitioner’s (GP) referral as the GP system does not exist there. The healthcare agents are aggressively eager to make money, forgetting quality service to the patients. On the other hand, in Canada, the insurance system plays a supportive role in making payments and ensuring quality healthcare.

关键词： Healthcare Out-of-Pocket Ayurveda Yoga Unani Siddha Not-for-Profit

Organizational Citizenship Behavior and Organizational Commitment among Clinical Nurses in Bangladesh

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Open Journal of Nursing 2020年第7期10卷 693-704页

作者： md. Mahmud hossain Dhaka Medical College Hospital Dhaka Bangladesh

Organizational citizenship behavior becomes one of the significant factors that enhance the organizational efficiency. Organizational citizenship behavior has been defined as behaviors that an employee voluntarily engages in organization that promote the effectiveness of clearly rewarded by the organization. However organizational commitment is very beneficial for the organization because it reduces the absenteeism rate and turnover ratio and enhances the organization productivity. In all of the organization, organizational commitment exerts a positive effect on the nurses’ performance. The aim was to assess the relationship between organizational citizenship behavior and organizational commitment among nurses. The descriptive correlational design was used to explore the relationship between organizational citizenship behavior and organizational commitment among nurses. Simple random sampling was used and sample size was 164. Data were collected by a self-structured questionnaire during November 2019 to December 2019 at Dhaka Medical College Hospital. Data were analyzed using SPSS version 21. The result showed that average age of the participants was 34.19 years old. There were statistically positive significant relationships between organizational citizenship behavior with organizational commitment (r = 0.82, p = 0.000), organizational citizenship behavior with working ward (F = 6.31, p = 0.000) and organizational commitment with working ward (F = 4.45, p = 0.002). Based on the results of this study, it is indicated that lack of OCB & OC among nurses’ is moderate level. The findings of this study will suggest reducing organizational hazard, and developing citizenship behavior and organizational commitment that enhance high outcome in health care organizations & quality of care. So hospital should provide in-service training for nurses’ and all departments are equally. Predictive study of factors related to OCB & OC is recommended for future study.

关键词： Clinical Nurses Organizational Citizenship Behavior Organizational Commitment

Numerical Analysis and Design of Photonic Crystal Fiber Based Surface Plasmon Resonance Biosensor

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Journal of Sensor Technology 2019年第2期9卷 27-34页

作者： md. Biplob hossain md. Sanwar hossain md. Moznuzzaman md. Amzad hossain md. Tariquzzaman md. Tanvir Hasan md. Masud Rana Department of Electrical and Electronic Engineering Jashore University of Science and Technology Jashore Bangladesh Department of Electrical and Electronic Engineering Jashore University of Science and Technology Jashore BangladeshMd. Amzad Department of Electrical and Electronic Engineering Bangladesh University of Business and Technology Dhaka Bangladesh Department of Electrical and Electronic Engineering Rajshahi University of Engineering & Technology Rajshahi Bangladesh.

In this paper, a high sensitive photonic crystal fiber (PCF) based surface plasmon resonance (SPR) biosensor is numerically studied. In this structure, as a plasmonic material, gold (Au) is used because of its chemical activeness. And a layer of sensing medium is used outside of the fiber to make the structure effective. Any unknown biomolecular analyte can be detected by placing or flowing it on the metal surface. Guiding properties and results are investigated using Finite element method (FEM). Results show that maximum sensitivity is 4000 nm/RIU, as well as resolution, is 2.5 × 10−5 RIU of the proposed sensor.

关键词： Biosensor PCF SPR SPP Mode Sensitivity

Recent Progress and Future Trends on the State of Charge Estimation Methods to Improve Battery-storage Efficiency: A Review

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CSEE Journal of Power and Energy Systems 2022年第1期8卷 105-114页

作者： md.Ohirul Qays Yonis Buswig md.Liton hossain Ahmed Abu-Siada Department of Electrical and Electrical Engineering Faculty of EngineeringUniversiti Malaysia SarawakKota SamarahanSarawakMalaysia Department of Electrical and Computer Engineering Curtin UniversityKent StreetBentleyPerth 6102WAAustralia

Battery storage systems are subject to frequent charging/discharging cycles,which reduce the operational life of the battery and reduce system reliability in the long *** such,several Battery Management Systems(BMS)have been developed to maintain system reliability and extend the battery’s operative *** estimation of the battery’s State of Charge(SOC)is a key challenge in the BMS due to its non-linear *** paper presents a comprehensive review on the most recent classifications and mathematical models for SOC *** trends for SOC estimation methods are also presented.

关键词： Battery Management System(BMS) battery modeling battery storage efficiency state of charge(SOC)

Allelopathic effects of Mikania cordata on forest and agricultural crops in Bangladesh

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Journal of Forestry Research 2016年第1期27卷 155-159页

作者： M.K.hossain S.anwar R.Nandi Institute of Forestry and Environmental Sciences University of Chittagong

Mikania cordata, an invasive weed is becom- ing a problem in the secondary degraded forests and plantations of Bangladesh, not only competing with but also releasing allelochemicals to cultivated crops. Allelo- pathic effects of the leaves of M. cordata were investigated through an experiment in the green house of the Institute of Forestry and Environmental Sciences, University of Chit- tagong, Bangladesh. Five economically important agricul- tural crops （Oryza sativa L., Triticum aestivum L., Vigna sinensis L., Abelmoschus esculentus L. and Amaranthus tricolor L.） and three forest crops （Acacia auriculiformis A. Cunn. ex Benth. ＆ Hook, Albizia procera （Roxb.） Benth., and Paraserianthes falcataria （L.） Nielson） were used as bioassay species. Experiments were conducted on trays at an average room temperature 27 ~C. The effects of dif- ferent concentrations of leaf extracts were compared to controls. Water soluble allelochemicals of M. cordata inhibited the germination and initial growth of the tested agricultural and forest crops. Germination percent of forest crops declined with increasing concentration of extracts. The inhibitory effect on root elongation of forest crops was pronounced, whereas a stimulatory effect was found on P. falcataria up to a concentration of 25 %. Abelmoschus esculentus showed poor germination （%） and low shoot development （0.5 cm） and no development of taproot or lateral roots at treatment of 100 % concentration. Theinhibitory effect was proportional to the concentrations of the extracts with higher concentrations producing stronger inhibitory effects. Lower concentrations showed some stimulatory effect. The inhibitory effect was pronounced in root and lateral root development rather than germination or shoot development of the crops. Mikania cordata should be eradicated for healthy growth and development of the forest and adjacent agricultural crops.

关键词： Mikania cordata Allelopathy Agriculturalcrops Forest crops Germination Growth inhibition

Interaction Properties of Geosynthetic with Different Backfill Soils

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International Journal of Geosciences 2012年第5期3卷 1033-1039页

作者： md. Bellal hossain md. Zakaria hossain Toshinori Sakai Department of Environmental Science & Technology Mie University Tsu Japan

Characterization of a geosynthetic is necessary for its effective use in various field application of reinforced soil structure. In this paper, a new type of geosynthetic has been evaluated for its interaction properties for different backfill soils using direct shear device. The test results are compared based on the type of soils, inclusions, and interface mechanical properties. Three backfills soils (sandy, clayey, and pure sand) in combination with four different geosynthetics (one geotextile and three geogrids) were tested at various loading conditions in direct shear. Test results reveal that the stress-deformation behaviour of the geotextile and geogrid interfaces with sandy and clayey backfills can be defined as hyperbolic. For the pure sand-geogrid interfaces, the relationship is followed by displacement hardening and softening behaviour. The dilatancy behaviour of a particular soil-geosynthetic interface is found similar at all normal stresses. Both contractive and dilative nature is observed for the interfaces with pure sand. On the contrary, only negative dilatancy or contractive behaviour is observed for sandy and clayey backfills with the same geosynthetics. The test results reveal that the relationship of the interface shear strength with the normal stress is not linear in most cases. Based on the test results, a simplified nonlinear equation is proposed for the soil-geosynthetic interface shear strength envelops which was in good agreement with the experimental data.

关键词： Geosynthetic Toyoura Sand Direct Shear Test Interface Shear Strength Dilatancy Behaviour