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Carbon Energy 2024年第7期6卷 134-149页

作者： md.Selim arif Sher Shah Hyeonjung Jung Vinod K.Paidi Kug-Seung Lee Jeong Woo Han Jong Hyeok Park Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoulRepublic of Korea Department of Chemistry University of North BengalRaja RammohunpurDarjeelingWest BengalIndia Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Pohang Accelerator Laboratory Beamline DivisionPohangRepublic of Korea European Synchrotron Radiation Facility France

Mo_(2)C is an excellent electrocatalyst for hydrogen evolution reaction(HER).However,Mo_(2)C is a poor electrocatalyst for oxygen evolution reaction(OER).Herein,two different elements,namely Co and Fe,are incorporated in Mo_(2)C that,therefore,has a finely tuned electronic structure,which is not achievable by incorporation of any one of the ***,the resulting electrocatalyst Co_(0.8)Fe_(0.2)-Mo_(2)C-80 displayed excellent OER catalytic performance,which is evidenced by a low overpotential of 214.0(and 246.5)mV to attain a current density of 10(and 50)mA cm^(-2),an ultralow Tafel slope of 38.4 mV dec^(-1),and longterm stability in alkaline *** data demonstrates that Co_(0.8)Fe_(0.2)-Mo_(2)C-80 requires the lowest overpotential(1.00 V)for OER and Co centers to be the active *** ultrahigh catalytic performance of the electrocatalyst is attributed to the excellent intrinsic catalytic activity due to high Brunauer-Emmett-Teller specific surface area,large electrochemically active surface area,small Tafel slope,and low chargetransfer resistance.

关键词： fine-tuning electronic structures heteronanostructures Mo_(2)C multimetal(Co/Fe) oxygen evolution reaction

Acute Lymphoblastic Leukemia Presenting as Systemic Juvenile Idiopathic Arthritis: Experience from Bangladesh

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第1期14卷 1-12页

作者： Manik Kumar Talukder Kamrul Laila md. arif Hossain md. Shafiqul Islam md. Zahidul Islam Kalyan Benjamin Gomes Mujammel Haque md. Mahbubul Islam md. Imnul Islam Department of Paediatrics Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh Health Services Dhaka Bangladesh NICVD Dhaka Bangladesh

Background: Acute lymphoblastic leukemia (ALL), the most common paediatric malignancy, is a heterogeneous hematologic disease. ALL patients may present with isolated and persistent osteo-articular complaints, lower incidence of hepatomegaly, splenomegaly or lymphadenopathy without clear laboratory features, and misdiagnosed as systemic juvenile idiopathic arthritis (sJIA). Methods: This was a single center cross sectional study over a period of 4 years. Clinic laboratory profiles of 39 ALL children were compared with 39 age and sex-matched sJIA cases. Result: Among 39 ALL patients 89.7% were initially misdiagnosed as sJIA upon clinical presentation. Majority (66.7%) of ALL patients had oligo-articular joint involvement. In sJIA, small joints of the hands were most commonly involved. The total WBC count was significantly higher in ALL patients (p-value 0.0065). CRP and LDH values between the two groups showed significant differences (p-value 0.00006 and 0.00001 respectively). Conclusion: The presentation of leukemia with arthralgia or arthritis makes the diagnosis difficult for the physicians. The diagnosis of sJIA must be made with caution keeping the possibility of haematological malignancy in mind.

关键词： ALL sJIA Arthritis Arthralgia Musculoskeletal

Determinants of emergency contraceptive pill use in Bangladesh: An analysis of national survey data

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Asian pacific Journal of Reproduction 2022年第2期11卷 62-69页

作者： md.Rahman Mahfuzur md.Rashed Alam md.arif billah Department of Population Science and Human Resource Development University of RajshahiRajshahi 6205Bangladesh Department of Social Work and Counselling Faculty of BusinessEconomic and Social DevelopmentUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia

Objective:To examine the determinants of emergency contraceptive pill use in ***:Data for this cross-sectional study came from 2017-2018 Bangladesh Demographic and Health *** of 906 reproductive age women who were potential candidates for using emergency contraceptive pill were analysed in this *** were analysed using univariate and multivariate *** binary logistic regression was employed as multivariate ***:Only 10.9%candidates were found to ever use emergency contraceptive *** odds of using emergency contraceptive pill for women visited by family planning field worker was significantly higher than that for those who were not visited by family planning field worker[odds ratio(OR)1.94;95%confidence interval(CI)1.19–3.17;P=0.008],while the odds of using emergency contraceptive pill for women with high socioeconomic status was higher than that for those with low socioeconomic status(OR 3.10;95%CI 1.61–5.97;P=0.001).Additionally,having some media access was linked to an increase in the odds of using emergency contraceptive pill(OR 3.01;95%CI 1.33–6.83;P=0.008).Women empowerment related factors did not show any significant effect on emergency contraceptive pill ***:The findings indicate that family planning programme has a great opportunity of playing an important role in increasing emergency contraceptive pill use in Bangladesh by increasing the knowledge and awareness of women about emergency contraceptive pill.

关键词： Emergency contraceptive pill Unintended pregnancy Abortion Bangladesh Demographic and Health Survey Bangladesh

Autophagy as a targeted therapeutic approach for skin cancer:Evaluating natural and synthetic molecular interventions

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Cancer Pathogenesis and Therapy 2024年第4期2卷 231-245页

作者： md.Liakot Ali Amdad Hossain Roky S.M.Asadul Karim Azad Abdul Halim Shaikat Jannatul Naima Meem Emtiajul Hoque Abu Mohammed Fuad Ahasan Mohammed Murshedul Islam md.Saifur Rahaman arif md.Saqline Mostaq md.Zihad Mahmud Mohammad Nurul Amin mdAshiq Mahmud Department of Pharmacy University of ChittagongChattogram 4331Bangladesh Pratyasha Health Biomedical Research Center Dhaka 1230Bangladesh Department of Pharmacy International Islamic University ChittagongChattogram 4318Bangladesh Department of Pharmacy Daffodil International UniversityDhaka 1216Bangladesh Department of Pharmacy BGC Trust University BangladeshChattogram 4381Bangladesh School of Basic Pharmaceutical and Toxicological Sciences College of PharmacyUniversity of Louisiana at MonroeMonroeLA 71209-0497USA Pioneer Dental College and Hospital Dhaka 1229Bangladesh

Skin cancer,a prevalent malignancy worldwide,poses significant health concerns owing to its increasing ***,a natural cellular process,is a pivotal event in skin cancer and has advantageous and detrimental *** duality has prompted extensive investigations into medical interventions targeting autophagy modulation for their substantial therapeutic *** systematic review aimed to investigate the relationship between skin cancer and autophagy and the contribution and mechanism of autophagy modulators in skin *** outlined the effectiveness and safety of targeting autophagy as a promising therapeutic strategy for the treatment of skin *** comprehensive review identified a diverse array of autophagy modulators with promising potential for the treatment of skin *** of these compounds demonstrates efficacy through distinct physiological mechanisms that have been elucidated in ***,findings from a literature search indicated that none of the natural,synthetic,or semisynthetic compounds exhibited notable adverse effects in either human or animal ***,this review offers novel mechanistic and therapeutic perspectives on the targeted modulation of autophagy in skin cancer.

关键词： Autophagy Skin cancer Autophagy inducers Autophagy inhibitors Nature-derived compounds Synthetic compounds

A comparative study of the antioxidant,antimicrobial,cytotoxic and thrombolytic potential of the fruits and leaves of Spondias dulcis

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Asian Pacific Journal of Tropical Biomedicine 2013年第9期3卷 682-691页

作者： shawkat md.Aminul Islam kh Tanvir Ahmed Mohammad Kawsar Manik md.arif Wahid chowdhury shafayat ibne Kamal Department of Pharmacy East West University

Objective:To investigate the antioxidant,antimicrobial,cytotoxic and thrombolytic property of the fruits and leaves of Spondias dulcis（***）.Methods:Methanolic extracts of fruits and leaves of *** were partitioned with chloroform and *** antioxidant potential of the crude extract and partitioned fractions were evaluated in terms of total phenolic content,total flavonoid content,DPPH radical scavenging potential,reducing potential and total antioxidant capacity by specific standard *** antimicrobial activity was evaluated using disc diffusion *** cytotoxicity was evaluated by using brine shrimp lethality bioassay and compared with vincristine *** thrombolytic activity was compared with ***:The methanolic fruit extract exhibited the highest phenolic content,flavonoid content and antioxidant capacity,among the other extracts,with the highest DPPH radical scavenging activity at a concentration of 10μg/mL(IC50:1.91μg/mL)and maximum reducing power at a concentration of 100μg/ml.(EC50:3.58μg/mL).Though all extract showed moderate antimicrobial activity against the bacterial strains,weak or no activity against *** range of LC50value of all extracts was 1.335-14.057μg/mL which was far lower than the cut off index for *** extracts exhibited statistically significant（P<0.001）thrombolytic ***:Our study suggested that *** exhibits antimicrobial activities against a wide variety of strains while it possesses significant antioxidant,cytotoxic and thrombolytic aclivily.

关键词： Spondias dulcis Antioxidant activity Antimicrobial activity Cytotoxic activity Thrombolytic activity DPPH IC_(50) LC_(50

Bio-inspired optimization algorithms for optical parameter extraction of dielectric materials: A comparative study

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Chinese Physics B 2016年第10期25卷 202-208页

作者： md Ghulam Saber Kh arif Shahriar Ashik Ahmed Rakibul Hasan Sagor Department of Electrical and Electronic Engineering Islamic University of Technology (IUT) Department of Electrical and Electronic Engineering Northern University Bangladesh (NUB)

Particle swarm optimization(PSO) and invasive weed optimization(IWO) algorithms are used for extracting the modeling parameters of materials useful for optics and photonics research community. These two bio-inspired algorithms are used here for the first time in this particular field to the best of our knowledge. The algorithms are used for modeling graphene oxide and the performances of the two are compared. Two objective functions are used for different boundary values. Root mean square(RMS) deviation is determined and compared.

关键词： optical parameter extraction particle swarm optimization invasive weed optimization graphene oxide optimization

Very rare upperdorsal intramedullary epidermoid with paraplegia: a case report

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Neuroimmunology and Neuroinflammation 2018年第4期5卷 36-40页

作者： md.Atikur Rahman Bipin Kumar Chaurasia md.arif Hossain Saequa Habib Kanak Kanti Barua Department of Neurosurgery Bangabandhu Sheikh Mujib Medical UniversityDhaka 1000Bangladesh Department of Pathology Bangabandhu Sheikh Mujib Medical UniversityDhaka 1000Bangladesh

Intramedullary upperdorsal epidermoid tumor is very rare. As far as we know, a small number of epidermoid tumors in the spinal cord have been reported in the journal for a long time. Most of the time, the spinal cord epidermoids are intradural extramedullary. We are reporting a case of a 21-year-old young man with paraplegia and upper dorsal pain for 6 months with normal physical findings. Magnetic resonance imaging scan shows that spinal intramedullary space occupying lesions in the dorsal 2/3 (D2/3) level. Total clearance was accomplished by performing laminectomy. Day to day paraplegia was improved. Histopathology was confirmed as an epidermoid tumor from two different centers.

关键词： Upperdorsal epidermoid intramedullary

Identification of Thoracic Diseases by Exploiting Deep Neural Networks

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Computers, Materials & Continua 2021年第3期66卷 3139-3149页

作者： Saleh Albahli Hafiz Tayyab Rauf Muhammad arif md Tabrez Nafis Abdulelah Algosaibi Department of Information Technology College of ComputerQassim UniversityBuraydahSaudi Arabia Department of Computer Science Univesity of Gurjat52250Pakistan School of Computer Science Guanzghou UniversityGuangzhou510006China Department of Computer Science&Engineering Jamia HamdardNew DelhiIndia Department of Computer Science CCSITKing Faisal UniversitySaudi Arabia

With the increasing demand for doctors in chest related diseases,there is a 15%performance gap every five *** this gap is not filled with effective chest disease detection automation,the healthcare industry may face unfavorable *** are only several studies that targeted X-ray images of cardiothoracic *** of the studies only targeted a single disease,which is *** some related studies have provided an identification framework for all classes,the results are not encouraging due to a lack of data and imbalanced data *** research provides a significant contribution to Generative Adversarial Network(GAN)based synthetic data and four different types of deep learning-based models that provided comparable *** models include a ResNet-152 model with image augmentation with an accuracy of 67%,a ResNet-152 model without image augmentation with an accuracy of 62%,transfer learning with Inception-V3 with an accuracy of 68%,and finally ResNet-152 model with image augmentation but targeted only six classes with an accuracy of 83%.

关键词： GAN CNN chest diseases inception-V3 ResNet152

Correlation of p53 over-expression and alteration in p53 gene detected by polymerase chain reaction-single strand conformation polymorphism in adenocarcinoma of gastric cancer patients from India

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World Journal of Gastroenterology 2009年第11期15卷 1381-1387页

作者： Sajjad Karim arif Ali Department of Bio-technology Jamia Millia IslamiaNew Delhi 110025India Center of Excellence in Genomic Medicine Research King Abdulaziz UniversityPO Box 80216 Jaddah-21589Kingdom of Saudi Arabia

AIM： To study the alterations in p53 gene among Indian gastric cancer patients and to correlate them with the various clinicopathological parameters. METHODS： A total of 103 gastric cancer patients were included in this study. The p53 alterations were studied by both immunohistochemical method as well as polymerase chain reaction （PCR）-single strand conformation polymorphism （SSCP） analysis. We only studied four （exon 5, 6, 7, and 8） of the 11 ,p53 exons. The alterations in p53 were also correlated with respect to various clinicopathological parameters. RESULTS： Among 103 cases, p53 over-expression and alteration were detected in 37 （35.92%） and 19 （18.44%） cases, respectively. Most of the ,p53 alterations were found at exon 5 （31.54%）, followed by exon 6 （26.31%）, exon 7 （21.04%） and exon 8 （21.04%）. A significant correlation of p53 overexpression was found with p53 alteration （P = 0.000）. Concordance between ,p53 alteration （as detected by SSCP） and over-expression [as detected by immunohistochemistry （IHC）] was found in 75% cases. We found that IHC-positive/SSCP-negative cases accounted for 21% of cases and IHC-negative/SSCP- positive cases accounted for remaining 4% cases. CONCLUSION： Our results show that p53 gene mutations are significantly correlated with p53 protein over-expression, with 75% concordance in over-expression and alteration in the p53 gene, but 25% disconcordance also cautions against the assumption that p53 over-expression is always associated with a gene mutation. There may be other mechanisms responsible for stabilization and accumulation of p53 protein with no evidence of gene mutation that reflect an accumulation of a non-mutated protein, or a false negative SSCP result.

关键词： Gastric cancer p53 Single strandconformation polymorphism Gene mutation Immunohistochemistry

Design and Optimization of Photonic Crystal Fiber for Liquid Sensing Applications

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Photonic Sensors 2016年第3期6卷 279-288页

作者： md. Faizul Huq arif Kawsar AHMED Sayed ASADUZZAMAN md. Abul Kalam AZAD Department of Information and Communication Technology (ICT) Mawlana Bhashani Science and TechnologyUniversity (MBSTU) Tangail-1902 Bangladesh Department of Material and Metallurgical Engineering (MME) Bangladesh University of Engineering and TechnologyUniversity (BUET) Dkaka-l O00 Bangladesh

This paper proposes a hexagonal photonic crystal fiber （H-PCF） structure with high relative sensitivity for liquid sensing; in which both core and cladding are microstructures. Numerical investigation is carried out by employing the full vectorial finite element method （FEM）. The analysis has been done in four stages of the proposed structure. The investigation shows that the proposed structure achieves higher relative sensitivity by increasing the diameter of the innermost ring air holes in the cladding. Moreover, placing a single channel instead of using a group of tiny channels increases the relative sensitivity effectively. Investigating the effects of different parameters, the optimized structure shows significantly higher relative sensitivity with a low confinement loss.

关键词： Photonic crystal fiber (PCF) liquid sensor microstructure core sensitivity confinement loss