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Effect of different additives on the phase separation behavior and thermodynamics of p-tert-alkylphenoxy poly (oxyethylene) ether in absence and presence of drug

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1110-1118页

作者： Marzia Rahman md. Anamul Hoque Mohammed abdullah Khan Malik abdul Rub abdullah M. Asiri Department of Chemistry Jahangirnagar University Savar Dhaka 1342 Bangladesh Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah 21589 Saudi Arabia

Cloud point （CP） determinations of 4-（1,1,3,3-tetramethylbutyl）phenyl-polyethylene glycol （TX-100 （nonionic surfactant）） was carried out in aqueous as well as in the attendance of drug （ceftriaxone sodium trihydrate （CFT））/（CFT ＋ different inorganic salts） and discussed thoroughly. Nonionic surfactants are employed exten- sively in different formulations. In aqueous solution, the values of CP of TX-100 are obtained to increase by means of enhancing of their concentration in the solution. The CP values of TX-100 solutions were found to de- crease in the presence of drug and their values decrease more with rising concentrations of the drug. The values of CP of CFT and TX-100 mixtures were found to further decrease in the attendance of inorganic salts in compar- ison to their absence. The effect of different sodium salts in decreasing CP values of TX-100 was achieved in the following order： NaCO3 〉 Na2SO4 〉 NaCl. However, in the case of potassium and ammonium salts, the decreasing order obtained is K2SO4 〉 KCO3 〉 KCI and （NH4）2SO4 〉 Na2CO3 〉 NH4Cl respectively. Various thermodynamic pa- rameters for example standard free energy （△G c）, standard enthalpy （△H c） as well as standard entropy （△S c） changes of phase separation were also evaluated and discussed in detail on the basis of their behavior.

关键词： Cloud point TX-100 Ceftriaxone sodium trihydrate Inorganic salts Thermodynamic parameters

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Anomaly Detection in ICS Datasets with Machine Learning Algorithms

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Computer Systems Science & Engineering 2021年第4期37卷 33-46页

作者： Sinil Mubarak Mohamed Hadi Habaebi md Rafiqul Islam Farah Diyana abdul Rahman Mohammad Tahir International Islamic University Malaysia Jalan Gombak53100Malaysia Sunway University Selangor47500Malaysia

An Intrusion Detection System (IDS) provides a front-line defensemechanism for the Industrial Control System (ICS) dedicated to keeping the process operations running continuously for 24 hours in a day and 7 days in a week.A well-known ICS is the Supervisory Control and Data Acquisition (SCADA)system. It supervises the physical process from sensor data and performs remotemonitoring control and diagnostic functions in critical infrastructures. The ICScyber threats are growing at an alarming rate on industrial automation applications. Detection techniques with machine learning algorithms on public datasets,suitable for intrusion detection of cyber-attacks in SCADA systems, as the firstline of defense, have been detailed. The machine learning algorithms have beenperformed with labeled output for prediction classification. The activity trafficbetween ICS components is analyzed and packet inspection of the dataset is performed for the ICS network. The features of flow-based network traffic areextracted for behavior analysis with port-wise profiling based on the data baseline,and anomaly detection classification and prediction using machine learning algorithms are performed.

关键词： Industrial control system SCADA intrusion detection system machine learning anomaly detection

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Enhancement of Growth and Grain Yield of Rice in Nutrient Deficient Soils by Rice Probiotic Bacteria

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Rice science 2017年第5期24卷 264-273页

作者： md Mohibul Alam KHAN Effi HAQUE Narayan Chandra PAUL md abdul KHALEQUE Saleh M. S. AL-GARNI Mahfuzur RAHMAN md Tofazzal ISLAM Department of Biotechnology Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur 1706 Bangladesh Department of Biochemistry & Microbiology North South University Dhaka 1229 Bangladesh Department of Rural Development Administration Bioenergy Crop Research Institute Muan 534833 Republic of Korea Department of Biological Sciences King Abdulaziz University Jeddah 2589 Kingdom of Saudi Arabia West Virginia University Morgantown West Virginia 26505 USA

Plant associated bacteria are promising alternatives to chemical fertilizers for plant growth and yield improvement in an eco-friendly *** this study,rice associated bacteria were isolated and assessed for mineral phosphate solubilization and indole-3-acetic acid(IAA) production activity in *** promising strains,which were tentatively identified as phylotaxon Pseudochrobactrum sp.(BRRh-1),Burkholderia sp.(BRRh-2),Burkholderia sp.(BRRh-3),Burkholderia sp.(BRRh-4),Pseudomonas aeruginosa(BRRh-5 and BRRh-6) based on their 16 S rRNA gene phylogeny,exhibited significant phosphate solubilizing activity in National Botanical Research Institute phosphate growth medium,and BRRh-4 displayed the highest phosphate solubilizing activity,followed by *** p H of the culture broth declined,resulting in increase of growth rate of bacteria at p H 7,which might be due to organic acid secretion by the *** presence of L-tryptophan,five isolates synthesized IAA and the maximum IAA was produced by BRRh-2,followed by *** of two most efficient phosphate solubilizing isolates BRRh-4 and BRRh-5 by root dipping(colonization) of seedling and spraying at the flowering stage significantly enhanced the growth and grain yield of rice variety BRRI ***,application of both strains with 50% of recommended nitrogen,phosphorus and potassium fertilizers produced equivalent or higher grain yield of rice compared to the control grown with full recommended fertilizer doses,which suggests that these strains may have the potential to be used as bioinoculants for sustainable rice production.

关键词： indole-3-acetic acid mineral phosphate solubilization rice plant growth promotion plant associated bacterium grain yield fertilizer

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Assessment of macro and micro nutrients around brick kilns agricultural environment

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Information Processing in Agriculture 2016年第1期3卷 61-68页

作者： abdul Halim Farhad Sikder Kalpana Begum Zakia Parveen md.Faruque Hossain Department of Soil Water and EnvironmentUniversity of DhakaDhaka 1000Bangladesh American International University-Bangladesh Kamal Ataturk AvenueH 58/BRd 21BananiDhaka 1213Bangladesh

Brick kiln is well known as one of the main sources of air pollution;however,the pollutants produced from it do not remain in the air,they ultimately fall down to the soil and pollute the surroundings,therefore,this study was carried out to assess the status of macro(N,P,K and S)and micro nutrients(Fe,Mn and Zn,Cu)in the agricultural environment near the brick kilns of Young Brahmaputra and Jamuna Floodplain *** soil and plant samples were collected from four distances such as 250 m,500 m,1000 m,and 1500 m in three different ***(2352-3378 mg kg^-1),Zn(86-156 mg kg^-1)and Cu(24.7-46.9 mg kg^-1)are found in the elevated levels near brick kiln soils that is released due to burning of poor quality coal and fire *** alarming news is that plant uptake of S and micro nutrients in the nearest areas of the brick kilns are significantly higher than the areas far from the brick production and their concentration ranges from 23 mg kg^-1 to 101 mg kg^-1 for Zn,10-41 mg kg^-1 for Cu,35-1309 mg kg^-1 for Fe,26-126 mg kg^-1 for Mn and 2590-mg kg^-1 for *** indicates both soil and plant received maximum amount of micronutrients and S concentrations within 500-1000 m distances from brick *** and Mn concentrations vary within a permissible limit but the plant uptake is *** concentrations is increasing with the distance from the brick kilns in both soils and plants but no definite pattern of P and K accumulation was *** suggested avoiding agricultural practice nearby brick kiln soils due to micronutrient contamination in order to preserve adjoined agricultural environment.

关键词： Brick kilns Macroµ nutrient Agriculture Environment

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Organic amendments increase corn yield by enhancing soil resilience to climate change

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The Crop Journal 2015年第2期3卷 110-117页

作者： Zhenwei Song Hongjun Gao Ping Zhu Chang Peng Aixing Deng Chengyan Zheng md abdul Mannaf md Nurul Islam Weijian Zhang Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture Jilin Academy of Agricultural Sciences Bangladesh Agricultural Research Institute

A 22-year field experiment was conducted in Gongzhuling, Jilin province, China to investigate corn yield response to fertilization practice. Compared to an unfertilized control(CK), all fertilization treatments, including inorganic nitrogen fertilizer only(N), balanced inorganic fertilizers(NPK), NPK plus corn straw(SNPK), and NPK plus farmyard manure(MNPK), resulted in significant increases in corn yield. However, only organic matter amendments sustained increasing yield trends, with annual rates of 0.137 and 0.194 t ha-1for the SPNK and MNPK treatments, respectively(P < 0.05). During the 22 years, the daily mean, maximum and minimum temperatures increased by 0.50, 0.53, and 0.46 °C per decade, whereas precipitation displayed no significant change but showed large seasonal variation. According to a regression analysis, increased air temperature exerted positive effects on corn yields under the SNPK and the MNPK treatments. Under both treatments,soil organic carbon contents and soil nutrient availabilities increased significantly compared to their initial levels in 1990, whereas soil bulk density and total porosity changed slightly under the two treatments, which showed higher soil water storage than other treatments. In contrast, significant increases in soil bulk density and decreases in soil total porosity and soil nutrient availability were observed under the CK, N and NPK treatments. The contributions of soil fertility to corn yield were 28.4%, 37.9%, 38.4%, 39.0%,and 42.9% under CK, N, NPK, SNPK, and MNPK treatments, respectively, whereas climate changes accounted for 27.0%, 14.6%, 12.4%, 11.8%, and 10.8%. These results indicate that, in Northeast China, organic matter amendments can mitigate negative and exploit positive effects of climate change on crop production by enhancing soil quality.

关键词： Long-term fertilization Maize cropping Soil quality Global warming Northeast China

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Structural and Functional Annotation of Hypothetical Protein of Fusobacterium nucleatum Strain MJR7757B: An in Silico Approach

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Computational Molecular Bioscience 2024年第1期14卷 17-33页

作者： md. Isrfil Hossen Fouzia Mostafa Nusrat Jahan Jannatul Ferdaus Amgad Albahi Sayed Mashequl Bari College of Food Science and Technology Huazhong Agricultural University Wuhan China Department of Crop Science and Technology Rajshahi University Rajshahi Bangladesh abdul Malek Ukil Medical College Noakhali Bangladesh Department of Medicine IBN Sina Medical College Dhaka Bangladesh National Food Research Centre Khartoum Sudan Department of Aquatic Animal Health Management Sher-e-Bangla Agricultural University Dhaka Bangladesh

Fusobacterium nucleatum is an anaerobic, commensal, gram-negative oral bacterium that is carcinogenic and causes a wide range of human diseases. The present study focused on the analysis of the hypothetical protein, HMPREF3221_01179, derived from F. nucleatum strain MJR7757B, employing various computational methods to anticipate both its structure and functional characteristics. NCBI conserved domain analysis, NCBI BLASTp and MEGA Phylogenetic tree study characterize the target protein as an outer membrane efflux protein (ToIC family) which facilitate the bacterial transmembrane transport. With a molecular weight of 52120.02 Da, an isoelectric point (pI) of 8.33, and an instability index of 29.47, the protein is anticipated to exhibit good solubility in the extracellular space and crucial stability for pharmaceutical applications. The protein’s structure meets quality standards during the construction and refinement of its 3D model. The efflux inhibitor Arginine beta-naphthylamide exhibits a significant binding affinity (-7.1 kcal/mol) to the binding site of the target protein. The in-silico analysis improves the understanding of the protein and facilitates future investigations into therapeutic medication.

关键词： Fusobacterium nucleatum In Silico Bacteria Hypothetical Protein Molecular Docking

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Recurrent stroke admissions with vs without COVID-19 and associated in-hospital mortality: A United States nationwide analysis, 2020

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World Journal of Virology 2024年第3期13卷 98-106页

作者： Rupak Desai Sai Priyanka Mellacheruvu Sai Anusha Akella Adil Sarvar Mohammed Mushfequa Hussain abdul Aziz Mohammed Pakhal Saketha Praveena Sunkara Jyotsna Gummadi Paritharsh Ghantasala Outcomes Research Independent ResearcherAtlantaGA 30033United States Department of Public Health University of MassachusettsLowellMA 01854United States Department of Internal Medicine One Brooklyn Health-Interfaith Medical CenterBrooklynNY 11213United States Department of Internal Medicine Central Michigan University College of MedicineSaginawMI 48602United States Department of Internal Medicine Kamineni Institute of Medical SciencesNarketpally 508254India Department of Internal Medicine Bhaskar Medical CollegeMoinabad 500075HyderabadIndia Department of Internal Medicine MedStar Medical GroupCharlotte HallMD 20622United States Department of Medicine Medstar Franklin Square Medical CenterBaltimoreMD 21237United States

BACKGROUND Coronavirus disease 2019(COVID-19)has been shown to increase the risk of ***,the prevalence and risk of recurrent stroke in COVID-19 patients with prior stroke/transient ischemic attack(TIA),as well as its impact on mor-tality,are not *** To evaluate the impact of COVID-19 on in-hospital mortality,length of stay,and healthcare costs in patients with recurrent *** We identified admissions of recurrent stroke(current acute ischemic stroke admissions with at least one prior TIA or stroke)in patients with and without COVID-19 using ICD-10-CM codes using the National Inpatient Sample(2020).We analyzed the impact of COVID-19 on mortality following recurrent stroke admissions by *** Of 97455 admissions with recurrent stroke,2140(2.2%)belonged to the COVID-19-positive *** COVID-19-positive group had a higher prevalence of diabetes and chronic kidney disease vs the COVID-19 negative group(P65 years,patients aged 45–64 years,Asians,Hispanics,whites,and blacks in the COVID-19 positive group had higher rates of all-cause mortality than the COVID-19 negative group(P65(OR:7.04,95%CI:5.24-9.44),males(OR:7.82,95%CI:5.38-11.35)compared to females(OR:6.15,95%CI:4.12-9.18),and in Hispanics(OR:15.47,95%CI:7.61-31.44)and Asians/Pacific Islanders(OR:14.93,95%CI:7.22-30.87)compared to blacks(OR:5.73,95%CI:3.08-10.68),and whites(OR:5.54,95%CI:3.79-8.09).CONCLUSION The study highlights the increased risk of all-cause in-hospital mortality in recurrent stroke patients with COVID-19,with a more pronounced increase in middle-aged patients,males,Hispanics,or Asians.

关键词： COVID-19 SARS-CoV-2 Recurrent stroke Mortality Hospitalization Comorbidities Acute ischemic stroke

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Unsteady Transonic Flow Control around an Airfoil in a Channel

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Journal of Thermal Science 2016年第2期25卷 117-122页

作者： md.abdul Hamid A.B.M.Toufique Hasan Mohammad Ali Yuichi Mitsutake Toshiaki Setoguchi Shen Yu Department of Mechanical Engineering Bangladesh University of Engineering and Technology (BUET) Institute of Ocean Energy Saga University Institute of Engineering Thermophysics Chinese Academy of Science

Transonic internal flow around an airfoil is associated with self-excited unsteady shock wave oscillation. This unsteady phenomenon generates buffet, high speed impulsive noise, non-synchronous vibration, high cycle fatigue failure and so on. Present study investigates the effectiveness of perforated cavity to control this unsteady flow field. The cavity has been incorporated on the airfoil surface. The degree of perforation of the cavity is kept constant as 30%. However, the number of openings(perforation) at the cavity upper wall has been varied. Results showed that this passive control reduces the strength of shock wave compared to that of baseline airfoil. As a result, the intensity of shock wave/boundary layer interaction and the root mean square(RMS) of pressure oscillation around the airfoil have been reduced with the control method.

关键词： transonic flow passive control shock wave oscillation

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Interaction of cetyltrimethylammonium bromide with drug in aqueous/electrolyte solution:A combined conductometric and molecular dynamics method study

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Chinese Journal of Chemical Engineering 2018年第1期26卷 159-167页

作者： md.Anamul Hoque md.Masud Alam Mohammad Robel Molla Shahed Rana Malik abdul Rub Mohammad A.Halim Mohammed abdullah Khan Farida Akhtar 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 Division of Quantum Chemistry BICCBThe Red-Green Computing Centre218 Elephant RoadDhaka 1205Bangladesh Institut Lumière Matière Université Lyon 1-CNRSUniversitéde Lyon69622 Villeurbanne CedexFrance

Interaction between beta-lactum antibiotic drug ciprofloxacin hydrochloride(CFH)and cationic surfactant cetyltrimethylammonium bromide(CTAB)was performed conductometrically in aqueous as well as in the occurrence of different salts(NaCl,KCl as well as NH_4Cl)over the temperature range of 298.15–323.15 K at the regular interval of 5 *** drug has been suggested for the treatment of bacterial infections such as urinary tract infections and acute sinusitis.A clear critical micelle concentration(CMC)was obtained for pure CTAB as well as(CFH+CTAB)mixed *** decrease in CMC values of CTAB caused by the addition of CFH reveals the existence of the interaction between the components and therefore it is the indication of micelle formation at lower concentration of CTAB and their CMC values further decrease in attendance of salts.A nonlinear behavior in the CMC versus T plot was observed in all the *** ΔG_m^0 values are found to be negative in present study systems demonstrated the stability of the *** values of ΔH_m^0 and ΔS_m^0 reveal the existence of hydrophobic and electrostatic interactions between CFH and *** thermodynamic properties of transfer for the micellization were also evaluated and discussed in *** dynamic simulation disclosed that environment of water and salts have impact on the hydrophobic interaction between CFH and *** water and salts,CTAB adopts spherical micelle in which charged hydrophilic groups are interacted with waters whereas hydrophobic tails form the core of the *** hydrophobic core region is highly conserved and *** addition,micelle formation is more favorable in aqueous Na Cl solution than other solutions.

关键词： Ciprofloxacin hydrochloride Cetyltrimethylammonium bromide Molecular dynamics Flydrophobic interaction Salt effect

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Growth inhibitory response and ultrastructural modification of oral-associated candidal reference strains (ATCC) by Piper betle L. extract

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International Journal of Oral Science 2014年第1期6卷 15-21页

作者： Mohd-Al-Faisal Nordin Wan Himratul-Aznita Wan Harun Fathilah abdul Razak md Yusoff Musa Department of Oral Biology and Biomedical Sciences Faculty of Dentistry University of Malaya Institute of Biological Sciences Faculty of ScienceUniversity of Malaya

Candida species have been associated with the emergence of strains resistant to selected antifungal agents. Plant products have been used traditionally as alternative medicine to ease mucosal fungal infections. This study aimed to investigate the effects of Piper betle extract on the growth profile and the ultrastructure of commonly isolated oral candidal cells. The major component of Po betle was identified using liquid chromatography-mass spectrophotometry （LC-MS/MS）. Seven ATCC control strains of Candida species were cultured in yeast peptone dextrose broth under four different growth environments：（i） in the absence of P. betle extract; and in the presence of P. beUeextract at respective concentrations of （ii） 1 ***-1; （iii） 3 ***-1; and （iv） 6 ***- 1 The growth inhibitory responses of the candidal cells were determined based on changes in the specific growth rates （μ）. Scanning electron microscopy （SEM） was used to observe any ultrastructural alterations in the candida colonies. LC-MS/MS was performed to validate the presence of bioactive compounds in the extract. Following treatment, it was observed that the p-values of the treated cells were significantly different than those of the untreated cells （P〈0.05）, indicating the fungistatic properties of the P. beUe extract. The candidal population was also reduced from an average of 13.44× 10^6 to 1.78×10^6 viable cell counts （CFU）.mL-1, SEM examination exhibited physical damage and considerable morphological alterations of the treated cells. The compound profile from LC-MS/MS indicated the presence of hydroxybenzoic acid, chavibetol and hydroxychavicol in P. betle extract. The effects of P. betle on candida cells could potentiate its antifungal activity.

关键词： antifungal activity Candida cell morphology growth inhibitory effect Piperbetle L.

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