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Determinants of COVID-19 vaccine acceptance and encountered side-effects among the vaccinated in Bangladesh

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Asian Pacific Journal of Tropical Medicine 2021年第8期14卷 341-349页

作者： md.Iftakhar parvej Samina Sultana Mimma Tabassum Seefat E Mannan Firoz Ahmed Department of Statistics Noakhali Science and Technology UniversityNoakhali 3814Bangladesh Department of Obstetrics and Gynecology President Abdul Hamid Medical CollegeBangladesh Department of Social Work Noakhali Science and Technology UniversityNoakhali 3814Bangladesh Department of Microbiology Noakhali science and Technology UniversityNoakhali 3814Bangladesh

Objective:To identify the acceptance of the vaccine based on factors influencing the vaccination program and the side effects from vaccinated ***:A cross-sectional online survey of 1529 Bangladeshi adults(≥18 years)was conducted between 17 April,2021 and 26 April,*** analysis of the data included Chi-square test and multinomial logistic regression ***:In total,67.04%of the participants were willing to accept a COVID-19 vaccine,and 45.00%of them in our study had already *** Bangladeshi people were more likely to accept COVID-19 vaccine if the vaccine reduces risk of infectious disease and has no associated health risk after receiving *** the respondents,religions,education level,living area(urban),belif that vaccines protect against infectious diseases and vaccines do not have health-related risk and vaccination was significantly associated with the acceptance of COVID-19 ***,people’s perception on development of natural immunity rather than receiving vaccines was also positively *** than half(57.41%)reported minor side effects such as fever,muscle pain and headache after getting vaccine ***:This study revealed that the acceptance rate was influenced by socio-demographic and health-related characteristics and people are not afraid of this vaccine if they faced minor side effects after receiving *** findings might help the government and policymakers of Bangladesh to implement necessary steps to accomplish this vaccination program effectively.

关键词： COVID-19 Vaccination Determinants Vaccine acceptance Side-effects Bangladesh

一种改进的DIQaM_FR/NR图像质量评价模型

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计算机工程 2020年第8期46卷 258-263,270页

作者：谢瑞邵堃霍星 MITHUN md Masud parvej 合肥工业大学计算机与信息学院合肥230000 合肥工业大学软件学院合肥230000 合肥工业大学数学学院合肥230000

图像质量评价模型通过提取并分析与人类视觉系统相一致的图像特征来达到评价图像质量的目的。随着深度学习技术的发展,很多基于深度学习的图像质量评价模型相继出现,但是多数模型在小数据量环境下容易出现过拟合问题。为此,通过对DIQaM_... 详细信息

图像质量评价模型通过提取并分析与人类视觉系统相一致的图像特征来达到评价图像质量的目的。随着深度学习技术的发展,很多基于深度学习的图像质量评价模型相继出现,但是多数模型在小数据量环境下容易出现过拟合问题。为此,通过对DIQaM_FR/NR模型进行改进,建立一种Res-DIQaM_FR/NR图像质量评价模型。采用迁移学习方法,利用预训练的ResNet50网络替代DIQaM_FR/NR的特征提取层以进行图像特征提取,使用全局平均池化层取代DIQaM_FR/NR中的全连接层FC-512从而对提取的特征进行回归学习。实验结果表明,该模型在降低DIQaM_FR/NR模型复杂度的同时能够深化其网络结构,在小数据量环境下也能较好地模拟人类视觉系统并准确评价图像质量。

关键词：图像质量评价特征提取迁移学习深度学习 ResNet50网络

Programmable microfluidic genotyping of plant DNA samples for marker-assisted selection

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Microsystems & Nanoengineering 2018年第1期4卷 413-422页

作者： Helena C.Zec Tony Zheng Lingshu Liu Kuangwen Hsieh tushar D.Rane Todd Pederson Tza-Huei Wang Department of Biomedical Engineering Johns Hopkins UniversityBaltimoreMD 21218USA Department of Mechanical Engineering Johns Hopkins UniversityBaltimoreMD 21218USA Pioneer Hi-Bred International Inc. JohnstonIA 50131USA

As demands to maintain the global food production continue to mount,multinational seed companies are turning to new DNA marker technologies to accelerate the rate of plant breeding and crop *** key to widespread adoption of molecular breeding is the availability of flexible and cost-effective tools that can perform combinatorial and high-throughput genotyping of single-nucleotide polymorphisms(SNPs)to guide the crop development *** this end,we have developed a programmable,droplet-based microfluidic device for genotyping maize genomic DNA.A unique feature of the microfluidic platform is the nano sample processors(NSPs),which allow the device to sequentially load an unrestricted number of unique DNA samples using only two inlets,overcoming the current limitation to the number of sample inputs due to small device *** and programmable droplet generation within the device allows each sample to be genotyped against a panel of markers on ***,we have successfully implemented the Invader assay for SNP genotyping in flowing,50-nL droplets,thus achieving significant reduction in consumption of reagents per reaction as compared with conventional genotyping *** a demonstration,we performed 240 Invader reactions(testing 8 DNA samples against 10 SNP markers)and achieved greater than 93% accuracy in SNP calling of plant DNA samples in a single droplet-based experiment.

关键词： droplets genotyping invader assay microfluidics single-nucleotide polymorphism

Investigation of the Antimicrobial Activity and <i>in Vivo </i>Cytotoxicity of <i>Diospyros malabarica </i>(Desr.) Kostel. Fruit Extracts

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Natural Science 2021年第8期13卷 331-351页

作者： Razib Datta Shubhra Shakil Ahmed Polash md. Monir Hossain Amir Hamza md. Mehedi Hasan tushar Tanushree Saha md. Ashraful Hasan md. Maniruzzaman Sikder Nuhu Alam Zinia Islam md. Sharif Hossain Satya Ranjan Sarker Department of Biotechnology and Genetic Engineering Jahangirnagar University Savar Bangladesh Department of Textile Engineering Dhaka University of Engineering and Technology Gazipur Bangladesh Department of Biochemistry and Molecular Biology Jahangirnagar University Savar Bangladesh Department of Botany Jahangirnagar University Savar Bangladesh

Mankind is facing an unprecedented threat of existence due to the antibiotic resistance developed by bacteria. The unripe fruits of Diospyros malabarica (Desr.) Kostel. (family: Ebenaceae) can be considered as one of the natural sources to tackle this issue. The present study is designed to assess the antimicrobial activity of D. malabarica seed and flesh ex-tracts. Herein, D. malabarica extracts were prepared using polar solvents (i.e., water and 70% ethanol) and their antimicrobial activity as well as in vivo toxicity was investigated. Their antibacterial activity was investigated against gram positive (Bacillus subtilis) and gram negative (Escherichia coli DH5α, and Salmonella typhi) bacteria at different time points. All the extracts showed the highest antibacterial activity after 2 hours of incubation. The aqueous seed extract showed the maximum zone of inhibition (i.e., ~13 mm) against Bacillus subtilis with a minimum inhibitory concentration (MIC) value of 2 μg/μl. The an-tibacterial propensity was also confirmed through trypan blue dye exclusion assay, CellToxTM Green assay, and lipid peroxidation (LPO) assay. On the other hand, the etha-nolic seed extract demonstrated higher antifungal activity through inhibition of mycelial growth. All the extracts showed excellent hemocompatibility against both human and rat red blood cells (RBCs). They also did not show any toxicity to rat liver and kidneys. Taken together, this study demonstrates that the aqueous and ethanolic extracts of D. malabarica seed and flesh could be an effective source of natural antimicrobial agents with no cytotox-ic activity.

关键词： Diospyros malabarica (Desr.) Kostel. Antibacterial Activity Trypan Blue Assay Cell ToxTM Green Assay In Vivo Cytotoxicity

Dosimetric Characteristics of 6 MV Medical Linac at BAEC

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2021年第1期10卷 38-46页

作者： Sudeb Kumar Roy Pretam Kumar Das Rajada Khatun md. Ashikur Rahman Shirin Akter tushar Kumar Mohammad Monjur Ahasan Department of Physics Pabna University of Science and Technology Pabna Bangladesh Medical Physics Division Atomic Energy Centre Dhaka Bangladesh Institutes of Nuclear Medical Physics Atomic Energy Research Establishment Savar Dhaka Bangladesh

Dosimetric characteristic is one of the essential parameters of a medical linear accelerator (LINAC), which must be obtained before clinical use. The dosimetric characteristics for 6 MV photon beam were measured and compared with the corresponding published data. The study was done using a Varian linear accelerator (Model Clinac-iX) at the Institute of Nuclear Medical Physics (INMP), AERE, Savar, Dhaka, under the Bangladesh Atomic Energy Commission (BAEC). The data is taken for 10 field sizes (2 × 2, 3 × 3, 5 × 5, 7 × 7, 10 × 10, 15 × 15, 20 × 20, 25 × 25, 30 × 30 and 40 × 40 cm2) at same conditions. The measured Percent Depth Dose (PDD) curves were obtained for 6 MV photon beams with the field as mentioned above and compared with the calculated PDD curves. The measured depth dose (Dmax) for reference field size (FS) 10 × 10 cm2 is 15.99 mm, and the PDD at 10 cm depth (D10) is 66.87% for 6 MV photon energies that are found to be compatible with the published report BJR supplement 25. The measured PDD curves for photon energies show a good agreement with the standard PDD curves. The photon beam dosimetry data found in the current study are compatible and all the tolerances are within the clinically acceptable tolerance limit.

关键词： Linac Machines 3D Water Phantom Ionization Chamber Electrometer

Analysis the Influenced of Plain and Twill Structures on Woven Fabric Properties

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Journal of Textile Science and Technology 2020年第3期6卷 107-113页

作者： Monour Khan Hasan Mahmud Tirtha Sarathi Das Muhammad Abdullah tushar Rahman Khan Rokibul Hasan Shohan Sajid Al Rafi md Solaiman Department of Fabric Manufacturing Engineering Textile Engineering College Noakhali Affiliated by Bangladesh University of Textiles Dhaka Bangladesh Department of Wet Processing Engineering Textile Engineering College Noakhali Affiliated by Bangladesh University of Textiles Dhaka Bangladesh

Fabric outer appearance is influenced by various fabric structures. In this research work, the physical properties of plain and twill were analyzed. Physical, mechanical and other aesthetic properties are also tested and the finding results are also compared between two samples. After testing the samples it is found that rubbing fastness remains unchanged for plain and twill fabric. Abrasion resistance, pilling, crease recovery and cover factor were evaluated for twill and plain structures using ISO 12945-2, ISO 12945-1 and ISO 2313 methods respectively. Abrasion resistance and pills property are not good for twill fabric in comparison with plain fabric but crease recovery is better of twill fabric.

关键词： Abrasion Pilling Crease Recovery Color Fastness Cover Factor EPI & PPI

基于MATLAB对Wi-MAX与其他技术的比较和可适性分析(英文)

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沈阳化工大学学报 2010年第4期24卷 380-384页

作者： md.阿赫.哈比莫尼尔.穆尔希德图萨尔.坎迪.罗伊马拉那.巴萨尼科技大学瑞沙伊工程技术大学

目前全球电信系统的宽带技术已经影响巨大.如果没有宽带接入技术,就不可能有效和迅速进入信息超级高速公路.而目前的蜂窝技术或现有的宽带网络,只能满足部分要求.因为,这些技术的速度较低而成本较高.因此,人们需要更快捷和成本更低的宽... 详细信息

目前全球电信系统的宽带技术已经影响巨大.如果没有宽带接入技术,就不可能有效和迅速进入信息超级高速公路.而目前的蜂窝技术或现有的宽带网络,只能满足部分要求.因为,这些技术的速度较低而成本较高.因此,人们需要更快捷和成本更低的宽带接入技术.WiMAX(微波接入全球互联)技术能够满足目前的需求.最近,WiMAX系统已引入全球宽带接入技术领域.本文研究表明:与其他现存技术相比,WiMAX系统提供的技术不属于通常的Wi-Fi、2.5cellular系统和其他现有技术,该技术可以对现有网络娱乐服务技术进行有效的补充,同时,WiMAX技术还能够提供更高的速度,且成本更低.由于WiMAX技术的发展和在世界上被普遍采用,它将给宽带服务领域带来革命性的变化,将成为现代娱乐生活的组成部分.

关键词： WiMAX技术自适应调制星座图 BPSK QPSK QAM 宽带服务