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Interaction of ciprofloxacin hydrochloride with sodium dodecyl sulfate in aqueous/electrolytes solution at different temperatures and compositions

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Chinese Journal of Chemical Engineering 2020年第1期28卷 216-223页

作者： Sk.md.ali ahsan md.Ruhul Amin Shamim Mahbub Mohammad Robel Molla Shahina Aktar Malik Abdul Rub md.Anamul Hoque Muhammad Nadeem Arshad Mohammed Abdullah Khan Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah-21589Saudi Arabia Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah-21589Saudi Arabia

Interactions of ciprofloxacin hydrochloride(CPFH)with sodium dodecyl sulfate(SDS)were investigated by conductivity measurement in H2O/electrolyte solutions(NaCl,Na2SO4&Na3PO4)over 298.15–318.15 K temperature range(with 5 K interval)considering the human body *** all cases,two critical micelle concentrations(c*)were observed which are increased in the presence of drug and decreased in the presence of salts enunciating the presence of interaction amongst the studied ***(CPFH+SDS)system in the presence of salt,the c*values at 303.15 K and I=0.50 mmol·kg^-1 followed the order:CNaCl>CNa2SO4>***ΔG1,m0 andΔG2,m0values are found to be negative for all systems that show that the micellization process is thermodynamically ***(CPFH+SDS)system in water,theΔHm0&ΔSm0 values reveal that the micellization processes is both entropy dominated in almost all *** the occurrence of electrolytes,ΔHm0 andΔSm0 values indicate that micellization processes are both entropy&enthalpy restricted at upper temperature but it becomes totally entropy dependent at higher *** higher positiveΔSm0 values indicate the enhanced hydrophobic interaction in presence of *** enthalpy-entropy compensation was determined from the linear relationship betweenΔHm0 andΔSm0 values in every *** transfer energies as well as compensation temperature and intrinsic enthalpy were also evaluated and the behaviors were comparable to other biological system.

关键词： Ciprofloxacin hydrochloride Sodium dodecyl sulfate Critical micelle concentration Thermodynamic indices Hydrophobic effect

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Physico-chemical parameters for the assembly of moxifloxacin hydrochloride and cetyltrimethylammonium chloride mixture in aqueous and alcoholic media

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Chinese Journal of Chemical Engineering 2023年第5期57卷 280-289页

作者： Arnop Dutta md.Tuhinur R.Joy Sk.md.ali ahsan Mansour K.Gatasheh Dileep Kumar Malik Abdul Rub md.Anamul Hoque Mohammad Majibur Rahman Nasrul Hoda D.M.Shafiqul Islam Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Chemistry Jashore University of Science and TechnologyJashore 7408Bangladesh Department of Biochemistry College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia Laboratory for Chemical Computation and Modeling Institute for Computational Science and Artificial IntelligenceVan Lang UniversityHo Chi Minh CityViet Nam Faculty of Applied Technology Van Lang UniversityHo Chi Minh CityViet Nam Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah 21589Saudi Arabia Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Environmental Sciences Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Neurology Henry Ford Health SystemDetroitMI 48292USA

The aggregation behavior of the mixture of cetyltrimethylammonium chloride(CTAC), a cationic surfactant, and moxifloxacin hydrochloride(MFH), a fourth-generation fluoroquinolone antibiotic drug, has been studied using the conductivity technique in aqueous and alcoholic(EtOH, 1-PrOH, and 2-BuOH)media. The study was performed at several temperatures between 298.15 and 323.15 K at 5 K *** assembly has been characterized by evaluating the micellar parameters, such as the critical micelle concentration(CMC) and the counter ion binding(β), of the CTAC + MFH mixture. The values of the CMC for the assembly of the CTAC + MFH mixture were reliant on the composition of alcohols in the mixed solvents and the temperature. The CMC values of the CTAC + MFH mixture increased with increasing temperature;that is, assembly was delayed by increased temperature. The micellization of the CTAC + MFH mixed system was delayed in alcoholic media. The observed-ΔG0mvalues for the association of the CTAC + MFH mixed system demonstrated a spontaneous aggregation process under all study *** on the-ΔH^(0)_(m) and +ΔS^(0)_(m) values, the association of the CTAC + MFH mixture is exothermic and the interaction forces acting between the CTAC and MFH species are hydrophobic, ion–dipole, and electrostatic interactions. The transfer properties and enthalpy–entropy compensation were also assessed and described comprehensively.

关键词： Moxifloxacin hydrochloride drug Aggregation Alcohol Hydrophobic interaction Critical micelle concentration Thermodynamic properties

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Role of H2 receptor blocker famotidine over the clinical recovery of COVID-19 patients: A randomized controlled trial

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World Journal of Clinical Cases 2022年第23期10卷 8170-8185页

作者： Abu Taiub Mohammed Mohiuddin Chowdhury Aktar Kamal md Kafil Uddin Abbas md Rezaul Karim md ahsan ali Shubhashis Talukder H M Hamidullah Mehedi Hamid Hassan Abul Hossain Shahin Yarui Li Shuixiang He Department of Gastroenterology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Ministry of Health and Family Welfare(OSDDGHS) Dhaka 1212Bangladesh Critical Care Unit M Abdur Rahim Medical College HospitalDinajpur 5200Bangladesh Critical Care Unit Cox's Bazar 250 Bed District Sadar HospitalCox's Bazar 4700Bangladesh Department of Neurology University Hospital LimerickLimerick V94 T9PXIreland Department of Histology Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Intensive Care Unit 250 Bed Chattogram General HospitalChittagong 4000Bangladesh Department of Medicine 250 Bed Chattogram General HospitalChittagong 4000Bangladesh Department of Emergency Chattogram Medical College HospitalChittagong 4000Bangladesh Department of Cardiology 250 Bed Chattogram General HospitalChittagong 4000Bangladesh

BACKGROUND Coronavirus disease 2019(COVID-19)is a global pandemic putting the population at a high risk of infection-related health hazards,mortality and a potential failure of proper medical ***,it is necessary to evaluate the potential use of the existing drugs that could be used as options for the medical management of COVID-19 *** To evaluate the role of the H_(2) receptor blocker“famotidine”in COVID-19 *** This study was done on seriously ill COVID-19 patients admitted to the intensive care unit(ICU)from different institutes in *** were divided into famotidine treatment group“A”(famotidine 40 mg to 60 mg oral formulation every 8 h with other treatment as given),and control group“B”(treatment as given).National early warning score(NEWS)-2,and sequential organ failure assessment day-1 score was calculated to evaluate the *** were evaluated by the time required for clinical improvement,characterized as duration required from enrollment to the achievement of NEWS-2 of≤2 maintained for 24 h;time to symptomatic recovery,defined as the duration in days(from randomization)required for the recovery of the COVID-19 symptoms;mortality rate;duration of ICU and hospital stay;total period of hospitalization;the rate of supplementary oxygen requirement;the computed tomography(CT)chest recovery(%),the time required for the viral clearance and“NEWS-2”on *** A total of 208 patients were enrolled in this study with 104 patients in each *** famotidine treatment group had comparatively better recovery of 75%and a low mortality of 25%than the control with a recovery of 70%and a mortality of 30%.Duration of clinical improvement(group A 9.53 d,group B 14.21 d);hospitalization period among the recovered patients(group A 13.04 d,group B 16.31 d),pulmonary improvement in chest CT(group A 21.7%,group B 13.2%),and the time for viral clearance(group A 20.7 d,group B 23.8 d)were found to be statistically si

关键词： COVID-19 SARS-CoV-2 Famotidine COVID-19 acute respiratory distress syndrome COVID-19 treatment Bangladesh

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Status and prospects for symmetric organic redox flow batteries

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Journal of Energy Chemistry 2025年第1期100卷 125-143页

作者： md Al Raihan C.Adam Dyker Department of Chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

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Ionotropic receptors mediate olfactory learning and memory in Drosophila

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Insect Science 2024年第4期31卷 1249-1269页

作者： md Zeeshan ali Anushree Aarif ahsan Mohammad Shamsul Ola Rizwanul Haque Jawaid ahsan Department of Biotechnology Central University of South BiharGayaBiharIndia Department of Radiation Oncology University of MichiganAnn ArborMichiganUSA Department of Biochemistry College of ScienceKing Saud UniversityRiyadhSaudi Arabia

Phenylacetaldehyde(PAH),an aromatic compound,is present in a diverse range of fruits including overripe bananas and prickly pear cactus,the two major host fruits for Drosophila *** acts as a potent ligand for the ionotropic receptor 84a(IR84a)in the adult fruit fly and it is detected by the IR84a/IR8a heterotetrameric *** role in the male courtship behavior through IR84a as an environmental aphrodisiac is of additional *** ***,two distinct kinds of olfactory receptors,that is,odorant receptors(ORs)and ionotropic receptors(IRs),perceive the odorant *** display unique structural,molecular,and functional characteristics in addition to having different evolutionary ***,olfactory cues detected by the ORs such as ethyl acetate,1-butanol,isoamyl acetate,1-octanol,4-methylcyclohexanol,*** as aliphatic esters and alcohols have been employed in olfactory classical conditioning using fruit *** underlines the participation of OR-activated olfactory pathways in learning and memory *** study elucidates that likewise ethyl acetate(EA)(an OR-responsive odorant),PAH(an IR-responsive aromatic compound)too can form learning and memory when associated with an appetitive gustatory *** association of PAH with sucrose(PAH/SUC)led to learning and formation of the long-term memory(LTM).Additionally,the Orco^(1),Ir84a^(MI00501),and Ir8a^(1)mutant flies were used to confirm the exclusive participation of the IR84a/IR8a complex in PAH/SUC olfactory associative *** results highlight the involvement of IRs via an IR-activated pathway in facilitating robust olfactory behavior.

关键词： appetitive conditioning Drosophila melanogaster ethyl acetate ionotropic receptors learning and memory phenylacetaldehyde

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Can Strategies to Cope with Hazard Shocks be Explained by At-Risk Households' Socioeconomic Asset Profile? Evidence from Tropical Cyclon-Prone Coastal Bangladesh

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International Journal of Disaster Risk Science 2017年第1期8卷 46-63页

作者： md.Nasif ahsan Economics Discipline Khulna UniversityKhulna-9208Bangladesh

This article documents the results of an empirical investigation on the complex interplay between diverse coping mechanisms and the socioeconomic asset profiles of coastal households at risk. Focusing on household-level perceptions and responses to cyclone hazards, a case study was carried out in a poor area in Bangladesh that is prone to natural hazards. We developed and tested our own analytical models based on the asset approach. We conducted a face-to-face household survey in southwestern coastal Bangladesh, in the Koyra sub-district, in late *** asked 360 households affected by the May 2009 tropical Cyclone Aila about their hazard perceptions, preparedness, coping practices, and socioeconomic assets. The results suggest that the majority of households at risk perceive an increasing trend of different climate hazards,with a distinct dominance of tropical cyclones, storm surges, and flash floods in the study area, which resulted in a yearly average economic damage of USD 144 for each household in the first year after Aila. However, such damage is significantly and inversely correlated with the number of adopted coping practices. Significant and systematic differences exist between upstream and downstream households in the study area with respect to hazard perception, hazard induced damages, asset accessibility,and adopted diversified coping practices. The empirical findings suggest that the degree of adoption of coping practices depends primarily on elements of socioeconomic asset profile and the duration of the consequences of cyclone hazards. Disaster preparedness training seems to improve at-risk households' degree of information access and eventually leads them to adopt more coping practices to reduce adverse impacts of climate hazards. Area-specific practical modules on coping practices should be incorporated in curricula of disaster preparedness training to make people at risk more resilient to hazard shocks.

关键词： Climatic hazard risk Coastal Bangladesh Coping mechanism Cyclone Aila

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Regeneration mechanisms and therapeutic strategies for neuromuscular junctions in aging and diseases

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Neural Regeneration Research 2025年第1期20卷 193-194页

作者： Masashi Fujitani Abu md Mamun Tarif Yoshinori Otani Department of Anatomy and Neuroscience Faculty of MedicineShimane UniversityShimaneJapan

The neuromuscular junction(NMJ)is an essential synaptic structure composed of motor neurons,skeletal muscles,and glial cells that orchestrate the critical process of muscle contraction(Li et al.,2018).The typical NMJ structure is classically described as having a“pretzel-like”shape in mice(Figure 1),whereas human NMJs have a smaller,fragmented structure throughout *** NMJs exhibit smaller or fragmented endplates,partial denervation,reduced numbers of synaptic vesicles,abnormal presynaptic mitochondria,and dysfunctional perisynaptic Schwann cells(Alhindi et al.,2022).

关键词： aging structure Figure

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Ru/NiMnB spherical cluster pillar for highly proficient green hydrogen electrocatalyst at high current density

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Journal of Energy Chemistry 2025年第1期100卷 397-408页

作者： md Ahasan Habib Shusen Lin Mehedi Hasan Joni Sumiya Akter Dristy Rutuja Mandavkar Jae-Hun Jeong Jihoon Lee Department of Electronic Engineering College of Electronics and Information Kwangwoon University

Advanced OER/HER electrocatalytic alternatives are crucial for the wide adaptation of green hydrogen ***,Ru/NiMnB spherical cluster pillar （SCP）,denoted as Ru/NiMnB,is synthesized using a combination of electro-deposition and hydrothermal *** investigation of Ru doping in the NiMnB matrix revealed significant improvements in electrocatalytic *** Ru/NiMnB SCPs demonstrate superior OER/HER activity with low overpotentials of 150 and 103 mV at 50mA/cm2in 1 M KOH,making them highly competitive with state-of-the-art ***,the Ru/NiMnB SCPs exhibit a low 2-E cell voltage of 2.80 V at ultra-high current density of 2,000 m A/cm2in 1 M KOH,outperforming the standard benchmark electrodes of RuO2||Pt/C,thereby positioning Ru/NiMnB as one of the best bifunctional *** SCPs exhibit exceptional high-current characteristics,stability and corrosion resistance,as evidenced by continuous operation at 1,000 mA/cm2high-current density for over 150 h in 6 M KOH at elevated temperatures under harsh industrial *** a small amount of Ru incorporation significantly enhances the electrocatalytic performances of NiMnB,attributed to increased active sites and improved intrinsic properties such as conductivity,adsorption/desorption capability and reaction ***,Ru/NiMnB SCPs present a promising bi-functional electrode concept for efficient green H2production.

关键词： Advanced electrocatalyst High current Corrosion resistance Industrial requirement

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Policy considerations on hurricane induced human displacement:Lessons from Cyclone Sidr and Hurricane Katrina

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Tropical Cyclone Research and Review 2022年第2期11卷 120-130页

作者： md Moynul ahsan Nimet Ozbek Department of Real Estate Development and Management Faculty of Applied SciencesAnkara UniversityAnkaraTurkey Department of Political Science and Public Administration Faculty of Political SciencesAnkara UniversityAnkaraTurkey

Hurricane or Cyclone is an extreme environment and climate event that has both long-term and short-term impact,and produces environmental emergency *** study has focused on two devastating cyclone disaster events in the 21st century:Hurricane Katrina in 2005 in the USA and Cyclone Sidr in 2007 in *** using secondary-based research and comparative case study technique,this study focuses on different considerations of governmental policy approaches and responses such as encouraging displacement through resettlement or relocation planning,providing resilience-oriented practices or in-situ adaptation practices;discouraging migration by providing soft policies such as rapid response and distribution plan,insurance,tax policies,incentives *** Hurricane Katrina and Cyclone *** highlighting the above considerations,this study found that developing policy at national level as well as strategic and operational measures at state/local level,integrating rights,resilience and relocation issues with existing relevant policies and programs and active community-based preparedness programs can reduce human displacement from hurricane or cyclone disaster.

关键词： Hurricane induced displacement Government policy Coastal area Cyclone Sidr Hurricane Katrina

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Growth performance of Avicennia officinalis L. and the effect of spacing on growth and yield of trees planted in the Western coastal belt of Bangladesh

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Journal of Forestry Research 2014年第4期25卷 835-838页

作者： md. Abdul Quddus Miah Sk. Ahiul Islam md. ahsan Habib md. Golam Moula Plantation Trial Unit Division Bangladesh Forest Research Institute Rupatoli Barisal-8206 Bangladesh

A trial ofAvicennia officinalis L. with five different spacings was conducted in the newly accreted lands along the western coastline （Patuakhali district） of Bangladesh since 1993 to assess growth perform- ance and the effect of spacing on tree growth. Data on tree density, height, diameter, bole height, crown diameter were recorded and ana- lyzed when the stand was 19 years old. Mean height ranged from 12.89-13.52 m and diameter at breast height （dbh） from 26.57-32.16 cm in plots of different spacings. The mean annual height increment ranged from 0,67-0.71 m, mean annual diameter increment from 1.40-1.69 cm and wood volume from 6.02-10.04 ***＇*** in different treatments. Significantly greater diameter （32.16 cm） and wood volume （10.04 ***.a-1） were obtained with wider （2.13 m × 2.13 m） spacing than with closer spacings. But tree growth was unaffected by other spacings. Growth data were also recorded from other .4. officinalis plantations raised by Forest Department （FD） on different islands in Patuakhali and Bhola districts of Bangladesh. At these sites, mean annual height incre- ment ranged from 0.33-0.62 m, mean annual diameter increment from 0.72-1,37 cm and wood volume from 1.55-5.73 m3·ha-1·a·-1. The growth performance of A. offindicated that the newly aecreted lands along the western shoreline may be suitable for raising Avicennia planta- tions for the enrichment of coastal vegetation.

关键词： growth Avicennia officinalis plantation spacing coastal belt

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