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World Journal of Cardiovascular Surgery 2021年第7期11卷 61-67页

作者： md. Abir Tazim Chowdhury Sohail Ahmed md. Zulfiqur haider S. M. A. Zulker Nine md. Kamrul Hasan Mohammad Sanaul Hoque Sarker Department of Cardiothoracic and Vascular Surgery Evercare Hospital Dhaka Bangladesh

Penetrating injuries to the subclavian arteries as well as post traumatic pseudoaneurysm involving Subclavian artery (SCA) are very much uncommon. We present one case of a 21 year-old male sustained a physical assault with a post stab injury left subclavian artery pseudoaneurysm. He was referred to our facility, two days after sustaining a penetrating chest trauma over left infraclavicular area of the chest. The presentation, diagnostic procedures and surgical approach for management of this very rare injury are discussed.

关键词： Penetrating Chest Injury Subclavian Artery (SCA) Injury Pseudo Aneurysm of Subclavian Artery Diagnosis Surgical Approach

The efficacy of deep learning based LSTM model in forecasting the outbreak of contagious diseases

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Infectious Disease Modelling 2022年第1期7卷 170-183页

作者： nurul Absar md.Nazim Uddin Mayeen Uddin Khandaker md.Habib Ullah Department of Computer Science and Engineering BGC Trust UniversityBangladeshChittagong4381Bangladesh Centre for Applied Physics and Radiation Technologies School of Engineering and TechnologySunway UniversityBandar Sunway47500SelangorMalaysia Department of Physics Faculty of Science and TechnologyAmerican International University-Bangladesh(AIUB)Dhaka1229Bangladesh

The coronavirus disease that outbreak in 2019 has caused various health *** to the WHO,the first positive case was detected in Bangladesh on 7th March 2020,but while writing this paper in June 2021,the total confirmed,recovered,and death cases were 826922,766266 and 13118,*** to the emergence of COVID-19 in Bangladesh,the country is facing a major public health ***,the country does not have a comprehensive health policy to address this *** makes it hard to predict how the pandemic will affect the *** learning techniques can help us detect the disease's *** predict the trend,parameters,risks,and to take preventive measure in Bangladesh;this work utilized the Recurrent Neural Networks based Deep Learning methodologies like LongShort-Term ***,we aim to predict the epidemic's progression for a period of more than a year under various scenarios in *** extracted the data for daily confirmed,recovered,and death cases from March 2020 to August *** obtained Root Mean Square Error(RMSE)values of confirmed,recovered,and death cases indicates that our result is more accurate than other contemporary *** study indicates that the LSTM model could be used effectively in predicting contagious *** obtained results could help in explaining the seriousness of the situation,also mayhelp the authorities to take precautionary steps to control the situation.

关键词： COVID-19 LSTM Recurrent neural networks(RNN) Prediction RMSE

Impacts of Nighttime Warming on the Soil Nematode Community in a Winter Wheat Field of Yangtze Delta Plain, China

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Journal of Integrative Agriculture 2014年第7期13卷 1477-1485页

作者： SONG Zhen-wei ZHANG Bin TIAN Yun-lu DENG Ai-xing ZHENG Cheng-yan md.nurul Islam md.Abdul Mannaf ZHANG Wei-jian Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology Ecology & Production Ministry of Agriculture Institute of Rice Sciences Guangdong Academy of Agricultural Sciences College of Agriculture Nanjing Agricultural University Bangladesh Agricultural Research Institute Joydebpur Gazipur-1701 Bangladesh

Changes in the soil nematode community induced by global warming may have a considerable influence on agro-ecosystem functioning. However, the impacts of predicted warming on nematode community in farmland （e.g., winter wheat field） have not been well documented. Therefore, a field experiment with free air temperature increase （FATI） was conducted to investigate the responses of the soil nematode community to nighttime warming in a winter wheat field of Yangtze Delta Plain, China, during 2007 to 2009. Nighttime warming （NW） by 1.8~C at 5-cm soil depth had no significant impact on the total nematode abundance compared to un-warmed control （CK）. However, NW significantly affected the nematode community structure. Warming favored the bacterivores and fungivores, such as Acrobeles, Monhystera, Rhabditis, and Rhabdontolaimus in bacterivores, and Filenchus in fungivores, while the plant-parasites were hindered, such as Helicotylenchus and Psilenchus. Interestingly, the carnivores/ omnivores remained almost unchanged. Hence, the abundances ofbacterivores and fungivores were significantly higher under NW than those under CK. Similarly, the abundances of plant-parasites were significantly lower under NW than under CK. Furthermore, Wasilewska index of the nematode community was significantly higher under NW than those under CK, indicating beneficial effect to the plant in the soil. Our results suggest that nighttime warming may improve soil fertility and decrease soil- borne diseases in winter wheat field through affecting the soil nematode community. It is also indicated that nighttime warming may promote the sustainability of the nematode community by altering genera-specific habitat suitability for soil biota.

关键词： climate warming FATI soil nematodes community structure,winter wheat

Diagnostic Dilemma with a Case of Primary Bronchopulmonary Actinomycosis Causing Unilateral Destroyed Lung: A Case Report and Literature Review

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Open Journal of Thoracic Surgery 2022年第1期12卷 1-10页

作者： md. Abir Tazim Chowdhury Sohail Ahmed md. Zulfiqur haider S. M. A. Zulker Nine md. Kamrul Hasan md. Estiak Ullah Sahid Musfaqus Shalehin md. Abdullah Al-Mahammud Kabir Niaz Ahmed Munama Magdum Department of Cardiothoracic and Vascular Surgery Evercare Hospital Dhaka Bangladesh Department of Cardiothoracic Anesthesia Evercare Hospital Dhaka Bangladesh Department of Community Medicine Shaheed Monsur Ali Medical College Dhaka Bangladesh

Among chronic pulmonary infections, pulmonary actinomycosis is a rare one, caused by a gram-positive microaerophilic bacterium called Actinomyces. Aside from cervicofacial or abdominopelvic actinomycosis, pulmonary involvement is rare, and sometimes this type of infection results in a misdiagnosis of pulmonary tuberculosis or carcinoma. Clinical presentation of pulmonary actinomycosis could be acute or subacute, with lobar involvement. However, the disease is most commonly diagnosed at the chronic phase, with patients presenting mild fever, weight loss, and occasional hemoptysis. Here, we described the case of a 30-year-old male patient, presented with a history of respiratory complaints for more than three years and was diagnosed clinically and radiologically as a case of a destroyed left lung. Later on, post-operative tissue diagnosis was confirmed—pulmonary actinomycosis.

关键词： Pulmonary Actinomycosis Destroyed Lung Diagnostic Dilemma

Optimal control strategies for preventing hepatitis B infection and reducing chronic liver cirrhosis incidence

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Infectious Disease Modelling 2020年第1期5卷 91-110页

作者： Mst.Shanta Khatun md.haider Ali Biswas Mathematics Discipline Science Engineering and Technology SchoolKhulna UniversityKhulna9208Bangladesh

Advanced liver cirrhosis has become life-threatening among non-communicable diseases ***,the terminal stage of liver diseases in which the liver develops scarring as a result of various long-term continuous *** liver diseases,viral hepatitis is the major risk factor for chronic cirrhosis *** present paper demonstrates a compartmental model of chronic disease liver cirrhosis describing the transmission dynamics of this *** the Pontryagin’s maximum principle,the optimal control policies such as vaccination for hepatitis B virus and treatment of other causes of cirrhosis are adopted as control *** target of this study is to minimize the number of infected and liver cirrhotic individuals as well as the associated cost of the *** this purpose,the optimal control strategies are employed according to the underlying causes behind this *** goal is to find the strategy of preventing hepatitis B infection which is considered one of the leading causes of cirrhosis and consequently,reduction of the chronic cirrhosis *** analysis is also performed to observe the effective control among the two control *** model is investigated both analytically and numerically and the numerical simulations are carried out to illustrate the analytical *** analysis reveals that both the vaccination and treatment could be the most fruitful way to reduce the incidence of chronic liver cirrhosis.

关键词： Liver cirrhosis Hepatitis B infection Vaccination and treatment Optimal control Maximum principle Efficiency analysis

Surgical Management for a Broken Delivery Shaft in <i>Vivo</i>during PCI Following Acute Myocardial Infarction in a Complex LAD Artery Lesion: A Case Report and Literature Review

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World Journal of Cardiovascular Surgery 2021年第11期11卷 104-113页

作者： md. Abir Tazim Chowdhury md. Zulfiqur haider Sohail Ahmed S. M. A. Zulker Nine md. Kamrul Hasan Arup Khan md. Junayed Imam Bhuiyan Mohammad Zishan Uddin Niaz Ahmed Department of Cardiothoracic and Vascular Surgery Evercare Hospital Dhaka Bangladesh Department of Cardiothoracic Anesthesia Evercare Hospital Dhaka Bangladesh

Stuck up and fracture of coronary angioplasty hardware are unwonted complications of percutaneous coronary interventions (PCI) for which surgical retrieval and management is once in a while required. We present one case of a 59-year-old diabetic, a hypertensive gentleman who attended the emergency room (ER) with central chest pain for 2 hours. After evaluation of the patient by physical and noninvasive diagnostic tests, he was diagnosed as a case of acute myocardial infarction (AMI) with stable hemodynamic. For the aforementioned findings, the patient was treated first with a thrombolytic agent in ER and then shifted to Cardiology Department for monitoring and further coronary evaluation by coronary angiography (CAG). CAG revealed essentially single vessel disease (SVD) with complex left anterior descending (LAD) artery lesion, so PCI was attempted but failed with an unfortunate incidence of the broken delivery shaft and left in vivo. Immediate decision making and surgical management for retrieval of lost angioplasty device and correction coronary lesion with revascularization save the patient from grave complication. All the series of events and management approaches of this very complex coronary artery lesion are discussed in this article.

关键词： Percutaneous Coronary Intervention (PCI) Acute Myocardial Infarction (AMI) Angioplasty Hardware Broken Delivery Shaft Complex Coronary Lesion Surgical Revascularization

Watering techniques and zero-valent iron biochar pH effects on As and Cd concentrations in rice rhizosphere soils,tissues and yield

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Journal of Environmental Sciences 2021年第2期33卷 144-157页

作者： md.Shafiqul Islam Yali Chen Liping Weng Jie Ma Zulqarnain haider Khan Zhongbin Liao Abdoul Salam Issiaka Abdoul Magid Yongtao Li Agro-Environmental Protection Institute/Key Laboratory for Environmental Factors Control of Agro Product Quality Safety Ministry of Agriculture and Rural AffairsTianjin 300191China College of Natural Resources and Environment South China Agricultural UniversityGuangzhou 510642China Chinese Academy of Agricutural Sciences Beijing 100081China Department of Soil Quality Wageningen Universit6700 AAWageningenNetherlands

Zero-valent iron amended biochar(ZVIB)has been proposed as a promising material in immobilizing heavy metals in paddy *** this study,the impacts of p H of ZVIB(p H 6.3 and p H 9.7)and watering management techniques(watering amount in the order of CON(control,5/72)>3/72>1-3/72>3/100>1/72,with 5/72,for example,representing irrigation given to 5 cm above soil surface in 72 hr regular interval)on As and Cd bioavailability for rice and its grain yield(Yield BR)were investigated in a pot *** rice As(As BR)content was irrelative to the watering treatments,while significantly decreased(>50%)with the addition of both ZVIB *** diminutions of brown rice Cd(Cd BR)content as well as the Yield BR were highly dependent on both the soil amendment materials’p H and watering *** all the watering treatments,3/72 treatment(15%less irrigation water than the CON)with ZVIB 6.3 amendment was the optimum fit for simultaneous reduction of As BR(50%)and Cd BR contents(19%)as well as for significant increment(12%)of the Yield *** high pH(9.7)ZVIB application could also efficiently decrease As and Cd contents in brown rice,it might risk grain yield lost if appropriate(e.g.3/72 in our study)watering management technique was not ***,ZVIB would be an environmentally friendly option as an amendment material with proper selection of watering management technique to utilize As and Cd co-contaminated arable soils safely for paddy cultivation.

关键词： Brown rice As Brown rice Cd Grain yield Paddy soils Water management Zero-valent iron biochar

Time-Dependent Flow with Convective Heat Transfer through a Curved Square Duct with Large Pressure Gradient

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Open Journal of Fluid Dynamics 2015年第3期5卷 238-255页

作者： Rabindra Nath Mondal md. nurul Amin Helal Poly Rani Shaha Nayan Kumar Poddar Department of Mathematics Jagannath University Dhaka Bangladesh Additional Director (Education) Training Directorate BGB Head Quarter Pilkhana Dhaka Bangladesh

A numerical study is presented for the fully developed two-dimensional laminar flow of viscous incompressible fluid through a curved square duct for the constant curvature δ = 0.1. In this paper, a spectral-based computational algorithm is employed as the principal tool for the simulations, while a Chebyshev polynomial and collocation method as secondary tools. Numerical calculations are carried out over a wide range of the pressure gradient parameter, the Dean number, 100 ≤ Dn ≤ 3000 for the Grashof number, Gr, ranging from 100 to 2000. The outer wall of the duct is treated heated while the inner wall cooled, the top and bottom walls being adiabatic. The main concern of the present study is to find out the unsteady flow behavior i.e. whether the unsteady flow is steady-state, periodic, multi-periodic or chaotic, if Dn or Gr is increased. It is found that the unsteady flow is periodic for Dn = 1000 at Gr = 100 and 500 and at Dn = 2000, Gr = 2000 but steady-state otherwise. It is also found that for large values of Dn, for example Dn = 3000, the unsteady flow undergoes in the scenario “periodic→chaotic→periodic”, if Gr is increased. Typical contours of secondary flow patterns and temperature profiles are also obtained, and it is found that the unsteady flow consists of single-, two-, three- and four-vortex solutions. The present study also shows that there is a strong interaction between the heating-induced buoyancy force and the centrifugal force in a curved square passage that stimulates fluid mixing and consequently enhance heat transfer in the fluid.

关键词： Curved Square Duct Secondary Flow Time-Evolution Periodic Solution Chaos

Unusual Presentation of a Large Multi-Septated Cystic Hygroma: A Case Report and Comprehensive Literature Review

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Surgical Science 2023年第7期14卷 486-495页

作者： md. Abir Tazim Chowdhury Sohail Ahmed md. Zulfiqur haider Niaz Ahmed A. K. M. Fazlul Haque Nasrin Aktar Arup Khan md. Abdullah-Al-Mahammud Kabir md. Sifat Uddin Abrar Bin Ahsan Trishna Sarker md. Khaled Hossain Munama Magdum Department of Cardiothoracic and Vascular Surgery Evercare Hospital Dhaka Dhaka Bangladesh Department of Cardiothoracic Anesthesia Evercare Hospital Dhaka Dhaka Bangladesh Department of Plastic and Reconstructive Surgery Evercare Hospital Dhaka Dhaka Bangladesh Department of Community Medicine Shahid Monsur Ali Medical College Dhaka Bangladesh

Background: Cystic hygromas are primarily found in the cervicofacial, thoracic, and abdominal regions, with limited occurrences in other areas. Despite existing literature on this condition, comprehensive descriptions and MRI findings of cystic hygromas in the extremities are rare. Aim: This case report aims to present a unique instance of a cystic hygroma in the left thigh. The objective is to provide detailed insights into the characteristics of this atypical presentation. Case Presentation: The case involves a 2-year-10 month-old girl with a cystic hygroma in her left thigh. The report includes a comprehensive description of the lesion’s clinical features and diagnostic evaluation, emphasizing the MRI findings to enhance understanding of this rare occurrence. Conclusion: This case report highlights the rarity of cystic hygromas outside the cervicofacial, thoracic, and abdominal regions, explicitly focusing on the occurrence in the left thigh. By presenting detailed insights into the clinical features, MRI findings, histopathological findings, and the surgical approach employed, this report contributes to the existing knowledge on this condition in atypical locations and informs future treatment strategies.

关键词： Cystic Hygroma Lymphangioma Multi-Septated Cystic Hygroma Unusual Presentation Vascular Tumors Benign Soft Tissue Tumors

Development of Non-enzymatic Cholesterol Electrochemical Sensor Based on Polyindole/Tungsten Carbide Nanocomposite

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Journal of Analysis and Testing 2020年第1期4卷 13-22页

作者： Shubham Sharma Preeti Joshi Sameena Mehtab md.Ghulam haider Zaidi Kavita Singhal Tanveer Irshad Siddiqi Department of Chemistry College of Basic Sciences and HumanitiesG.B.Pant University of Agriculture and TechnologyPantnagarUttarakhand 263145India Department of Chemistry D.I.T UniversityMussoorie Diversion RoadMakkawalaDehradunUttarakhand 248001India

Non-enzymatic electrochemical sensor was developed for estimation of low-level ***/tungsten carbide(PIN/WC)nanocomposite was synthesized and used as an electroactive material to develop low-cost modified stainless steel plate electrode(SSPE).Surface morphology of developed electrode was characterized by scanning electron *** behavior of cholesterol was investigated through electron impedance spectroscopy,potentiodynamic polarization and cyclic voltammetry in 1-M KOH electrolytic *** quantification of cholesterol was studied by square wave voltammetry and differential pulse *** calibration plots between the cholesterol concentration and peak current were in linear relation with limit of detection of 1.23×10^(−6) mol L^(−1).The overall result reveals that developed PIN/WC/SSPE electrode has excellent performance for trace-level cholesterol estimation and can be further employed for cholesterol monitoring in blood serum samples.

关键词： Electrochemical sensor Polyindole Nanocomposite Cholesterol Voltammetric techniques