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Post Thyroidectomy Assessment of Intact Parathyroid Hormone for Early Prediction of Hypocalcaemia

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第2期13卷 71-84页

作者： Md. masum billah Ripon Kumar Sarkar Md. Yousuf Ali Saad Zaman Md. Nazmul Hasan Md. Shehab Uddin Md. Mosleh Uddin Kazi Shameemus Salam Farzana Binte Abedin Leera Department of Otolaryngology-Head & Neck Surgery Universal Medical College Hospital Dhaka Bangladesh Department of Otolaryngology-Head & Neck Surgery National Institute of Ear Nose and Throat Dhaka Bangladesh Shaheed Ahsan Ullah Master General Hospital Gazipur Bangladesh Department of Otolaryngology-Head & Neck Surgery Cumilla Medical College Cumilla Bangladesh Department of ENT Oncology National Institute of Cancer Research & Hospital Dhaka Bangladesh Department of ENT Outdoor Rajshahi Medical College Hospital Rajshahi Bangladesh Department of Otolaryngology-Head & Neck Surgery Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh Department of Biochemistry Delta Medical College Hospital Dhaka Bangladesh

Background: As the half-life of intact parathyroid hormone (iPTH) is very low, it reflects parathyroid insufficiency within minutes to hours after total thyroidectomy. Therefore, iPTH level assessment in the postoperative period can be used to predict the development of hypocalcaemia. The optimal time point to measure serum iPTH is important for the accurate prediction of hypocalcaemia. Aim: This paper aims to evaluate the ability of iPTH as an early predictive marker of hypocalcaemia and determine which time iPTH is more able to predict postoperative hypocalcaemia. Method: This prospective observational study was conducted in the Department of Otolaryngology-Head & Neck Surgery, BSMMU, Dhaka, from July 2020 to December 2021, with 67 patients who underwent total thyroidectomy. iPTH levels were measured on the day before the operation and at 1 hour, 4 hours, and 24 hours after the operation. S.calcium levels were measured on the day before the operation and 1st postoperative day. All the data were compiled and sorted properly and were analyzed statistically. Results: Postoperative hypocalcaemia developed in 18 cases, with an incidence of 26.9%. Pearson correlation showed a significant correlation between postoperative iPTH at 1 hr, 4 h, and 24 hr with 1st postoperative calcium value. The Receiver operating characteristic (ROC) curve was processed for the postoperative iPTH at 1 hr, 4 h, and 24 hr. The sensitivity, specificity, cut-off value, and mean AUC found 93.9%, 94.4%, ≤14.0, 0.988;95.9%, 94.4%, ≤09.5, 0.993 and 91.8%, 94.4%, ≤11.0, 0.993 respectively. Conclusion: iPTH can be used as an early predictor of post-thy-roidectomy hypocalcaemia. 4 hr iPTH showed more sensitivity and specificity for a cut-off value near the laboratory reference range.

关键词： Total Thyroidectomy Hypocalcaemia Serum Intact Parathyroid Hormone Early Predictor of Hypocalcaemia

Brain Tumor Segmentation of HGG and LGG MRI Images Using WFL-Based 3D U-Net

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Journal of Biomedical Science and Engineering 2022年第10期15卷 241-260页

作者： Ahliddin Shomirov Jing Zhang Mohammad masum billah School of Information Science and Engineering University of Jinan Jinan China Shandong Provincial Key Laboratory of Network-Based Intelligent Computing Jinan China

The semantic segmentation of a brain tumor is the essential stage in medical treatment planning. Due to the different characteristics of tumors, one of the main difficulties in image segmentation is the severe imbalance between classes. Also, a dataset with imbalanced classes is a common problem in multimodal 3D brain MRIs. Despite these problems, most studies in brain tumor segmentation are biased toward the overrepresented tumor class (majority class) and ignore the small size tumor class (minority class). In this paper, we propose an improved loss function Weighted Focal Loss (WFL), based on 3D U-Net to enhance the prediction of brain tumor segmentation. Using our proposed loss function (WFL) solves the imbalance between classes and the imbalance between weights by giving higher weights to the minority and lower weights to the majority. After assigning these weights to different pixel values, our work is able to resolve pixel degradation, which is one of the limitations of the loss function during model training. Based on our experiments, the proposed function (WFL) on the 3D U-Net model for high-grade glioma (HGG) and low-grade glioma (LGG) in the Brain Tumor Segmentation Challenge (BraTS) 2019 dataset has shown promising results for tumor core (TC), whole tumor (WT) and enhanced tumor (ET) with average dice scores of HGG: 0.830, 0.913, 0.815 and Dice scores of LGG for TC: 0.731, WT: 0.775 and ET: 0.685. Moreover, we deployed our training on BraTS 2020 in which we obtained mean Dice scores of HGG: TC: 0.843, WT: 0.892, ET: 0.871 and Dice scores of LGG: 0.7501, 0.7985, 0.6103 for TC, WT and ET, respectively.

关键词： Brain Tumor Segmentation 3D U-Net WFL HGG and LGG

基于卷积神经网络的实时山羊脸部识别和疼痛动作单元分类

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基于卷积神经网络的实时山羊脸部识别和疼痛动作单元分类

作者： masum billah（宋时）西北农林科技大学

学位级别：硕士

山羊(Capra hircus),是最古老的驯化动物之一,其在全球范围内被认为是肉、奶和纤维的重要来源。目前,不同标签识别的方法被用于山羊个体识别,其是实现山羊提高繁殖、健康和饲养质量革命性的一步。为了保证动物福利,必须确保它们在没有... 详细信息

山羊(Capra hircus),是最古老的驯化动物之一,其在全球范围内被认为是肉、奶和纤维的重要来源。目前,不同标签识别的方法被用于山羊个体识别,其是实现山羊提高繁殖、健康和饲养质量革命性的一步。为了保证动物福利,必须确保它们在没有痛苦、伤害或疾病的条件下饲养,因此自动化的精准识别农业显得尤为重要,且动物的面部表情可以帮助农民改善动物的健康和福利。本文提出了一种基于卷积神经网络的羊脸识别和动作单元分类方法,其可从源图像中自动提取面部和面部地标。但是,由于羊脸相似度高且缺乏足够的数据集,导致其比人脸识别更加复杂。本论文由三个不同的公开数据集组成,用于疼痛动作的检测、识别和动作单元的分类。数据集包含1680张图像、3078张羊脸、3326只眼睛、2586个鼻子和4771个耳边界轮廓,其用于羊脸和面部地标检测。在羊脸识别方面,收集了10个个体的4129张图像,从源图像中检索了2387幅耳朵图像和1635幅眼睛图像,用于疼痛动作单元分类。高质量的卷积神经网络(CNN)模型在上述数据集上进行调试。通过羊脸和面部特征检测,并将其裁剪到固定区域,输入图像,检测、身份识别和疼痛动作单元分类。面部特征被用来几何规范化面部。自定义CNN模型是用来提取被检测区域的特征并预测概率。通过羊脸和面部特征检测,并将其裁剪到固定区域,输入图像,检测、身份识别和疼痛动作单元分类。面部特征被用来几何规范化面部,自定义CNN模型是用来提取被检测区域的特征并预测概率,疼痛动作单元分类采用预训练卷积神经网络进行特征提取,采用传统的机器学习模型进行参数学习。本研究中羊脸、眼、口、耳的检测准确率分别为93.26%、83.71%、92.04%和85.55%(平均准确度),10个个体样本的个体识别准确率为96.4%。而且眼、耳面部动作单元分类的准确率分别为81%和95%。本研究为山羊表型数据采集、疾病诊断、活动监测以及最终不需要耳标的养殖提供新的机遇。所有数据集和相关结果均可下载(http://***/10.17632/4skwhnrscr)。

关键词：山羊图像数据集面部和面部界标检测面部识别疼痛动作单元分类卷积神经网络

Phenotyping of Hybrid Maize (<i>Zea mays</i>L.) at Seedling Stage under Drought Condition

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American Journal of Plant Sciences 2018年第11期9卷 2154-2169页

作者： Shirin Aktar Nilima Hossain Mohammad Golam Azam masum billah Priya Lal Biswas Mohammad Abdul Latif Motiar Rohman Shamim Ara Bagum Mohammad Shalim Uddin Molecular Breeding Lab Plant Breeding Division Bangladesh Agricultural Research Institute (BARI) Gazipur Bangladesh

Drought is envisaged as the greatest demolishing natural impacts throughout the world since it has observed extensive place of agronomical land sterile almost the world. It’s the significant crop output-limiting producer, and elaborated learning of its result on plant enhancement dictation is diametrical. At present, drought tolerant hybrid maize has been trying to induce Bangladesh especially drought affected zone to identify the drought endurance maize genotypes. Consequently, a feasible pot study of 49 hybrid maize genotypes were directed to determine an adequate drought level to promote aliment and promotion of maize plant below the water stress conditions with treatment (control and drought) and three replications. The data were received after 35 days of sowing using appropriate procedures. Specially, the stomata were collected by the white transparent nail polish from the lower part of leaves. Descriptive statistic of the all traits like percentage of SPAD, leaf rolling (LR), maximum root length (MRL), maximum shoot length (MSL), root dry matter (RDM), shoot dry matter (SDM), length of stomata (LS), width of stomata (WS), thickness of stomata (TS), total dry matter (TDM) and ANOVA for control and drought condition individually showed significant (P < 0.05) variations among the germplasm for their genotypes, treatment and interaction. The first fourth principal components (PCs) narrated about 82.0% of the total variation. Cluster analysis placed the 49 hybrid into 6 main groups among those cluster;groups five showed the maximum number mean value of traits. The highest positive relationship was obtained from TS, WS, RDM, SDM and TDM traits by forming genotype-traits bi-plot of 11traits of 49 genotypes. After analyzing, it is explicit that G18 (CML-80 × IPB911-16) and G22 (CZI-04 × IPB911-16) were the most tolerant hybrids maize genotypes and very susceptible hybrids maize genotypes were G16 (P-12 × CML487), G34 (CML-32 × PB911-16) and G37 (P-33 × CML487). It is expected that the higher expression of considere

关键词： Maize Stress Drought Phenotypes Tolerant

Transcriptomic and pathological profiling of a new congenic mouse model with Lepr mutation:Evaluating susceptibility to the development of obesity and NAFLD

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Genes & Diseases 2024年第3期11卷 34-38页

作者： MJ Mahesh Kumar Shailendra Arindkar masum Saini Perumal Nagarajan National Institute of Immunology New Delhi 100067India Center for Cellular and Molecular Biology Hyderabad 500007India Regional Center for Biotechnology Faridabad 121001India

Non-alcoholic fatty liver disease(NAFLD)and type 2 diabetes mellitus(T2DM)are two disease conditions for which obesity is a risk factor.^(1)Due to the close relationship between the three pathologies,researchers frequently use the same mouse models to identify the underlying processes of obesity,NAFLD,and T2DM.For instance,leptin(Lep)-null(ob/ob)and leptin receptor(Lepr)-deficient(db/db)mice spontaneously develop NAFLD and show different phenotypes of extreme obesity and diabetes,respectively.

关键词： obesity NAFLD Lep

Decay of Rhizophora apiculata(Blume)and Xylocarpus granatum(Koenig)detrital sources in the Sarawak Mangrove,Malaysia

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Journal of Forestry Research 2020年第2期31卷 613-623页

作者： Abu Hena Mustafa Kamal Mohammed Muzammel Hoque Mohd Hanafi Idris Osumanu Haruna Ahmed Md.Khurshid Alam Bhuiyan Md.masum billah Md.Nesarul Hoque Zamri Rosli Department of Animal Science and Fishery Faculty of Agriculture and Food SciencesUniversiti Putra Malaysia Campus Bintulu97008 BintuluSarawakMalaysia School of Fisheries and Aquaculture Sciences Universiti Malaysia Terengganu21030 Kuala TerengganuTerengganu Darul ImanMalaysia Department of Crop Science Faculty of Agriculture and Food SciencesUniversity Putra Malaysia Bintulu Sarawak Campus97008 BintuluSarawakMalaysia Department of Physical Chemistry Faculty of Marine and Environmental SciencesUniversity of CadizPuerto Real CampusPoligono San Pedro s/n Puerto Real11519 CadizSpain The United Graduate School of Agriculture Sciences Kagoshima University1-21-24 KorimotoKagoshima 890-0056Japan Department of Forestry Faculty of Agriculture and Food SciencesUniversiti Putra Malaysia Bintulu Sarawak Campus97008 BintuluSarawakMalaysia

Decaying mangrove detritus plays a significant role in nutrient cycling and fueling in both the forests and aquatic habitats where the detritus stems from estuarine and coastal food webs.Detrital decay rates partly depend on the type of detritus,but most studies have thus far focused on leaf litter decay and decomposition,whereas other detrital sources(except for roots)have largely been ignored.We compare the decay rates of Rhizophora apiculata and Xylocarpus granatum non-leafy detritus(flowers,propagules,stipules,and twigs)with mangrove leaf litter in field studies,using litter bags during the dry and the wet seasons in the tropical mangrove forest of Sibuti,Sarawak,Malaysia.We observed higher microbial decay rates of stipules,flowers,propagules,and twigs for both the R.apiculata and X.granatumduring the wet months.By contrast,leaf decay rates were higher during the dry months.Decay rates depended on the lignin content of the detrital sources of both species,both during dry and wet months.Accordingly,the half-life(T0.5)and 95%lifespan(T0.95)of non-leaf materials(flowers,propagules,stipules and twigs)for both species were remarkably longer than those of leaf litter.Slowly decaying non-leafy detritus may play a significant role in nutrient and carbon cycling over longer time,when leaf litter is either being decomposing rapidly and/or being washed away by tidal flush and river runoff.Hence,non-leafy(flowers,propagules,stipules and twigs)detritus should be taken into account when budgeting organic matter turnover in mangroves.

关键词： Microbial decay Decay constants Non-leafy detritus Sibuti mangrove Malaysia

Unsupervised method of clustering and labeling of the online product based on reviews

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第2期12卷 175-197页

作者： Md masum billah Mohammad Nuruzzaman Bhuiyan Md.Akterujjaman Computer Science American International University Bangladesh(AIUB)Dhaka-1229 Bangladesh Institute of Information Technology Noakhali Science and Technology University Noakhali-3814 Bangladesh Software Engineering Daffodil International UniversityDhaka-1207Bangladesh

This paper presents an unsupervised approach to cluster reviews of products collected from Amazon and then generates its labels of each cluster.Instead of using a complete review,this paper splits a review into sentences and considers all sentences from the reviews as inputs for Clustering.Hierarchical Agglomerative Clustering(HAC)is used to cluster sentences.The approaches of cluster labeling are also unsupervised.For labeling,three different methods have been used to find a limited number of essential words for each cluster.Extracted essential words are used to construct phrases.Constructed phrases are used as labels for each cluster.This paper compares the result of the labeling method with baseline labeling.In the result evaluation,all the labeling methods outperform the baseline method.The aim of this research is cluster labeling that makes a set of labels to describe a cluster content and distinguishes the labels from other cluster labels.

关键词： Cluster labeling construct phrases baseline method sentence clustering

Synergistic enhancement of photocatalytic and antimicrobial efficacy of nitrogen and erbium co-doped ZnO nanoparticles

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Journal of Rare Earths 2024年第5期42卷 859-868,I0002页

作者： Sudipta Mondal Moniruzzaman Jamal Sikder Ashikuzzaman Ayon Md Jannatul Ferdous Anik Md Muktadir billah Department of Materials and Metallurgical Engineering Bangladesh University of Engineering and TechnologyDhaka1000Bangladesh School of Materials Engineering Purdue UniversityWest LafayetteIN47907USA Department of Materials Science and Engineering University of CaliforniaBerkeleyCA94720USA Department of Materials Science and Engineering Northwestern UniversityEvanstonI28USA

Using the chemical co-precipitation approach,a series of nitrogen(N) and erbium(Er) co-doped ZnO nanoparticles(NPs) was effectively synthesized to enhance the photocatalytic and antibacterial activities.Several characterization techniques,including X-ray diffraction(XRD),X-ray photoelectron spectro scopy(XPS),scanning electron microscopy(SEM),UV-vis,and photoluminescence(PL) spectroscopy,were carried out to validate the evaluated photocatalytic and antibacterial activities.XRD analysis confirms the pure wurtzite ZnO phase without the presence of any secondary phase.XPS analysis confirms the succe ssful incorporation of nitrogen and erbium into the ZnO matrix.The optical bandgap of ZnO calculated from UV-vis spectroscopy shows a redshift after Er-N co-doping,with the lowest bandgap of 3.215 eV calculated for Zn_(0.97)Er_(0.03)N_(0.01)O_(0.99) NPs.SEM images demonstrate the formation of nanorods after N-Er co-doping,followed by gradually increase d rod diameter and length after N-Er co-doping.Moreover,the photocatalytic activities of ZnO samples we re measured by their ability to facilitate the photodegradation of Rhodamine B under UV irradiation.ZnO with 1 mol% N doping exhibits 88% photodegradation of RhB under UV light within 360 min,and the photodegradation and antibacterial activity are greatly improved with Er co-doping.In fact,3 mol% Er-1 mol% N doped ZnO NPs demonstrate the highest photocatalytic activity,with approximately 96% degradation after 360 min,as well as superior antibacterial activity against Staphylococcus aureus(Gram-positive bacteria) and Pseudomonas aeruginosa(Gram-negative bacteria) with the highest zone of inhibition(ZOI) of 16 nm,due to nanorod formation,increased reactive oxygen species(ROS),and decreased electron-hole recombination,as validated by SEM,XPS,and PL spectroscopy.

关键词： Chemical co-precipitation Co-doping Bandgap Photocatalysis Rare earths Antimicrobial

An Overview of Soil Improvement through Ground Grouting

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Journal of Geoscience and Environment Protection 2024年第1期12卷 51-63页

作者： Md Ratan Bhuiyan Salequr Rahman masum Md Tushar Parvej S M Sanuwar School of Civil Engineering Hydraulic Engineering Tianjin University Tianjin China College of Civil Engineering and Architecture China Three Gorges University Yichang China

Soil is an essential component of what surrounds us in nature, providing as the basis for our infrastructure and construction. However, soil is not always suitable for construction due to a variety of geotechnical issues such as inadequate bearing capacity, excessive settlement, and liquefaction susceptibility. Through improving the engineering qualities of soil, such as strength, permeability, and stability, ground grouting is a specific geotechnical method used. Using a fluid grout mixture injected into the subsurface, holes are filled and weak or loose strata are solidified as the material seeps into the soil matrix. The approach’s adaptability in addressing soil-related issues has made it more well-known in the fields of civil engineering and construction. In the end, this has improved groundwater management, foundation support, and overall geotechnical performance.

关键词： Grouting Soil Improvement Permeation Grouting Compaction Grouting and Jet Grouting