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Information technology,business sustainability and female economic participation in sub-Saharan Africa

International Journal of Innovation Studies 2023年第4期7卷 301-311页

作者： Simplice A.Asongu Mushfiqur rahman mohammad Alghababsheh School of Economics University of JohannesburgJohannesburgSouth Africa School of Business University of Wales Trinity Saint DavidWinchester HouseLondonSW96EJUK Department of Business Management School of BusinessMutah UniversityAlKarak61710Jordan Department of Economic&Data Science New Uzbekistan University54 Mustaqillik AvenueTashkent100007Uzbekistan

This study assesses,from the perspective of financial stability,how business/financial sustainability,moderates the influence of information technology on female economic participation in 49 countries in Sub-Saharan Africa for the period *** empirical evidence is based on Tobit regression,which accounted for the censored nature of the outcome *** following important findings were obtained:First,ICT(information and communications technology)dynamics(mobile phone penetration,internet penetration,and fixed broadband subscriptions)are consistently moderated by business sustainability to positively affect female ***,business sustainability scores must exceed certain thresholds before moderating fixed broadband subscriptions to induce favorable overall effects on female employment,female labor force participation,and female unemployment *** positive effects on female employment and labor force participation is ascertained by the thresholds of 18.742 and 19.505 Zscores,respectively and a Z-score of 17.300 for the negative impact on female *** thresholds that should be exceeded are within policy reach,make economic sense,and are *** study contributes to the extant literature by providing actionable thresholds for business sustainability that can be employed by policy makers such that information technology positively influences female economic inclusion in Sub-Saharan Africa.

关键词： Information technology Business sustainability Gender inclusion

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Rapunzel syndrome:The unsuspected culprit

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World Journal of Gastroenterology 2008年第7期14卷 1141-1143页

作者： mohammad Ezzedien Rabie Abdul rahman Arishi Ashraf Khan Hussein Ageely Gaffar Abbas Seif El-Nasr mohammad Fagihi Faculty of Medicine Jazan UniversityJazanSaudi Arabia King Fahad Central Hospital JazanSaudi Arabia

Trichobezoar is a rare intriguing disorder in which swallowed hairs accumulates in the stomach. Being indigestible and slippery, it could not be propulsed and becomes entrapped within the stomach. Large amounts can thus accumulate over the years forming a hair ball. Rapunzel syndrome is a variant where hair accumulation reaches the small gut and beyond in some cases. Although the syndrome has been known for many years, only 24 cases have been reported in the literature and the discovery of a new case is always surprising. In this report, we present two cases discovered within a period of three months. One of them was pregnant and had small bowel intussusception and perforation, a very rare combination. We hereby add two more cases to the literature. To our knowledge, this is the first report on two cases of Rapunzel syndrome, the diagnosis of which demands a high index of suspicion.

关键词： Trichobezoar Rapunzel syndrome Intussusception

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Spatial distribution,source apportionment,and associated risks of trace metals (As,Pb,Cr,Cd,and Hg) from a subtropical river,Gomti,Bangladesh

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International Journal of Sediment Research 2022年第1期37卷 83-96页

作者： Abu Sayeed Shafiuddin Ahmed mohammad Belal Hossain Saad mohammad Omar Faruque Babu Moshiur rahman Jun Sun mohammad Shafiqul Islam Sarker Department of Fisheries and Marine Science Noakhali Science and Technology University School of Engineering and Built Environment Griffith University College of Marine and Environmental Sciences Tianjin University of Science and Technology Forensic Science Laboratory Rapid Action Battalions Headquarters

Sediment samples from the Gomti River basin were investigated to determine and evaluate trace metal concentrations,their biological effect,and potential ecological and human health risks for adults and *** mean concentrations of trace metals were organized in the descending order of mercury(Hg)(0.08 mg/kg)>chromium (Cr)(0.06 mg/kg)>lead (Pb)(0.05 mg/kg)>arsenic (As)(0.02 mg/kg)>cadmium (Cd)(0.01 mg/kg).The current study illustrated that metals were attributed to the area from natural sources and different anthropogenic sources especially from ***,the concentration levels were lower than the sediment quality guidelines (SQGs) based on the effect-range classifications of threshold effect concentration (TEC) and probable effect concentration (PEC).Therefore,the concentration of the elements showed no adverse biological effects on aquatic *** evaluated potential ecological risk index also revealed the low toxicity to the aquatic ***,the applied sediment quality indices,geo-accumulation index (Igeo),contamination factor (CF),and contamination severity index (CSI) suggested that the contamination levels of the elements were in the acceptable range,and the contamination had not notably impacted on the sediment *** risk index (HI) concerning age groups was significantly less than the threshold limit of 1 indicating that the contamination had no non-carcinogenic risk *** total carcinogenic risk (TCR) was less than a risk value of 1×***,the current study suggests that immediate remediation is not required due to an absence of alarming conditions in the study *** monitoring of the attribution of the metal elements should be done for the betterment of human and environmental health.

关键词： Trace metals Biological effects Ecological risk Human health risk Gomti river Bangladesh

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Anti-cancer potential of South Asian plants

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Natural Products and Bioprospecting 2013年第3期3卷 74-88页

作者： mohammad Mijanur rahman Md.Asaduzzaman KHAN Department of Biochemistry and Molecular Biology Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Biochemistry School of Life SciencesCentral South UniversityChangsha 410013China

Phyto-chemicals are increasingly being used in the treatment of cancer because of their availability,potential anti-cancer activity with less adverse effects when compared with *** variation of climate and geography in South Asian countries provides a nursing environment for the growth of versatile plant species,that are repeatedly drawing attention of the scientific *** this review,we have focused on the anti-cancer potential of thirty plants,which are commonly found in Bangladesh,India,Nepal,Pakistan and Sri Lanka,with their mechanisms of *** particular,we have discussed the bio-active components that display anti-cancer activity,which have been identified in these *** review may help researchers to profile plants with known anti-cancer effect of this region and further investigations of anti-cancer agents in medicinal plants from South Asia.

关键词： natural products South Asia medicinal plants anti-cancer activities phyto-chemicals

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IoT and Blockchain-Based Mask Surveillance System for COVID-19 Prevention Using Deep Learning

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Computers, Materials & Continua 2022年第7期72卷 2033-2053页

作者： Wahidur rahman Naif Al Mudawi Abdulwahab Alazeb Muhammad Minoar Hossain Saima Siddique Tashfia MdTarequl Islam Shisir Mia mohammad Motiur rahman Department of Computer Science and Engineering Mawlana Bhashani Science and Technology UniversityTangailBangladesh Department of Computer Science Najran UniversityNajran55461Saudi Arabia

On the edge of the worldwide public health crisis,the COVID-19 disease has become a serious headache for its destructive nature on humanity *** a facial mask can be an effective possible solution to mitigate the spreading of the virus and reduce the death ***,wearing a face mask in public places such as shopping malls,hotels,restaurants,homes,and offices needs to be *** research work comes up with a solution of mask surveillance system utilizing the mechanism of modern computations like Deep Learning(DL),Internet of things(IoT),and *** absence or displacement of the mask will be identified with a raspberry pi,a camera module,and the operations of DL and Machine Learning(ML).The detected information will be sent to the cloud server with the mechanism of IoT for real-time data *** proposed model also includes a Blockchain-based architecture to secure the transactions of mask detection and create efficient data security,monitoring,and storage *** research further includes an IoT-based mask detection scheme with signal bulbs,alarms,and notifications in the *** find the efficacy of the proposed method,a set of experiments has been enumerated and *** research work finds the highest accuracy of 99.95%in the detection and classification of facial *** related experiments with IoT and Block-chain-based integration have also been performed and calculated the corresponding experimental data *** Scale(SUS)has been accomplished to check the satisfaction level of use and found the SUS score of 77%.Further,a comparison among existing solutions on three emergent technologies is included to track the significance of the proposed ***,the proposed system can be an efficient mask surveillance system for COVID-19 and workable in real-time mask detection and classification.

关键词： Internet of things(IoT) blockchain deep learning feature reduction surveillance system

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Hydrothermal synthesis of triangular CeCO3OH particles and photoluminescence properties

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Chinese Chemical Letters 2017年第3期28卷 663-669页

作者： Md.Hasan Zahir Shamseldin A.Mohamed mohammad Mizanur rahman Ateeq Ur Rehman Center of Research Excellence in Renewable Energy Research Institute King Eahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Center of Research Excellence in Nanotechnology King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Center of Research Excellence in Corrosion King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Center for Engineering Research King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Ru/CeO_2[RC] and Ru/CeO_2/ethylene glycol（EG） [RCE] nanoparticles were produced by performing a simple hydrothermal reaction at 200℃ for 24 h and found to have two distinct morphologies. The RC nanoparticles are phase pureCeO_2; triangular highly crystallineCeCO_3OH nanoparticles are formed from the solution containing EG under the same hydrothermal reaction conditions at p H 8.5. EG plays an important role in the formation of the triangularCeCO_3OH nanoparticles. The polycrystallineCeCO_3OH nanoparticles retain their triangular structure even after calcination at 600℃in air but are transformed into a pureCeO_2 phase. The room temperature photoluminescence of the RC and RCE nanoparticles and of RCE calcined at 600℃[RCE-600] was also investigated. It was found that the high crystallinity triangular RCE-600 sample exhibits the highest photoluminescence intensity.

关键词： CeCO_3OH particles Ru/CeO_2 Ethylene glycol Hydrothermal process Luminescence

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Influence of soil physicochemical properties,particle size fractions and mineralogy on the leaching potentials of arsenic and antimony in abandoned mine soils

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Pedosphere 2023年第5期33卷 744-753页

作者： A.S.M.Fazle BARI Dane LAMB Geoff R.MACFARLANE mohammad Mahmudur rahman Global Centre for Environmental Remediation(GCER) College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW 2308Australia Department of Soil Science Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh Chemical and Environmental Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3000Australia School of Environmental and Life Sciences The University of NewcastleCallaghanNSW 2308Australia

At abandoned mine sites,arsenic(As)-and antimony(Sb)-enriched soils are often disposed of through onsite burial or *** highly weathered mine sites,the mobility of As and Sb is typically controlled by iron(Fe)(III)/Fe(II)phases;thus,the suitability of such disposal methods and appropriate testing techniques are *** the present study,leaching potentials of As and Sb were examined using the toxicity characteristic leaching procedure(TCLP),waste extraction test(WET),and WET-extended procedure(WET-EXT)at three abandoned mine site soils in *** leached concentration of As regularly exceeded USEPA criteria(5 mg L^(-1)).The highest leached concentrations of As and Sb were observed in the finest particle size fraction(<0.053 mm)by WET-EXT(1040 mg L^(-1)for As and 21.10 mg L^(-1)for Sb)followed by WET(800 mg L^(-1)for As and 20.90 mg L^(-1)for Sb).The TCLP method resulted in the lowest concentrations of leached As(0.0009 mg L^(-1))and Sb(0.0003 mg L^(-1)).Crystalline and amorphous As-bearing Fe oxides were the main phases in the soils ***,the best correlations of leached As determined by TCLP(0.832),WET(0.944),and WET-EXT(0.961)were found with the non-specifically sorbed(NS1)As *** mineralogical and sequential extraction data clearly indicate the dominant role of Fe geochemistry in controlling leachability of As and *** TCLP method was unlikely to be suitable for assessing leachability,as it exhibited no relationship with leachable Fe and substantially lower leached As and Sb than the other two *** the high to extremely high leachable As and Sb concentrations,most of the soil samples would not be recommended for placement in capping works,old shafts,or reduction systems(e.g.,collection in drainage basins).

关键词： particle size fraction sequential extraction toxic element toxicity characteristic leaching procedure waste extraction test

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Methanotrophy-driven accumulation of organic carbon in four paddy soils of Bangladesh

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Pedosphere 2022年第2期32卷 348-358页

作者： Nasrin SULTANA Jun ZHAO Yuanfeng CAI G.K.M.Mustafizur rahman mohammad Saiful ALAM mohammad FAHEEM Adrian HO Zhongjun JIA State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Agroforestry and Environmental Science Faculty of AgricultureSher-e-Bangla Agricultural University(SAU)Sher-e-Bangla NagarDhaka-1207Bangladesh Department of Soil Science Faculty of AgricultureBangabandhu Sheikh Mujibur Rahman Agricultural University(BSMRAU)Gazipur-1706Bangladesh Institute for Microbiology Leibniz Universität HannoverHerrenhäuser Straße 2Building 4104Hannover D-30419Germany

Biological methane oxidation is a crucial process in the global carbon cycle that reduces methane emissions from paddy fields and natural wetlands into the ***,soil organic carbon accumulation associated with microbial methane oxidation is poorly ***,to investigate methane-derived carbon incorporation into soil organic matter,paddy soils originated from different parent materials(Inceptisol,Entisol,and Alfisol) were collected after rice harvesting from four major rice-producing regions in *** microcosm incubation with 5%(volume/volume)^(13) CH_(4),soil^(13) C-atom abundances significantly increased from background level of 1.08% to 1.88%–2.78%,leading to a net methane-derived accumulation of soil organic carbon ranging from 120 to 307 mg kg^(-1).Approximately 23.6%–60.0% of the methane consumed was converted to soil organic carbon during microbial methane *** phylogeny of^(13) C-labeled pmoA(enconding the alpha subunit of the particulate methane monooxygenase) and 16 S rRNA genes further revealed that canonical α(type II) and γ(type I) Proteobacteria were active methane *** within the Methylobacter-and Methylosarcina-affiliated type Ia lineages dominated active methane-oxidizing communities that were responsible for the majority of methane-derived carbon accumulation in all three paddy soils,while Methylocystis-affiliated type IIa lineage was the key contributor in one paddy soil of Inceptisol *** results suggest that methanotroph-mediated synthesis of biomass plays an important role in soil organic matter *** study thus supports the concept that methanotrophs not only consume the greenhouse gas methane but also serve as a key biotic factor in maintaining soil fertility.

关键词： 16S rRNA gene DNA-based stable-isotope probing(DNA-SIP) methane oxidation methanotroph pmoA rice soil soil organic carbon soil organic matter

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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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Effect of Cobalt Doping on the Microstructure and Tensile Properties of Lead Free Solder Joint Subjected to Electromigration

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Journal of Materials Science & Technology 2016年第11期32卷 1129-1136页

作者： M.Nasir Bashir A.S.M.A.Haseeb Abu Zayed mohammad Saliqur rahman M.A.Fazal Department of Mechanical Engineering University of Malaya

Rapid Cu diffusion is one of the main causes of electromigration（EM） failure in lead-free solder *** this study, an effort has been made to investigate the detrimental effects of EM on microstructure and mechanical performance of solder joint by introducing Co nanoparticles（NP） doped flux at the interface between SAC305 solder and copper substrate. EM tests were conducted on un-doped SAC305 and Co-doped SAC305 solder joints for different time intervals, with the maximum duration of 1128 h. A DC current was applied to the both types of solder joints to achieve a current density of 1 × 104A/cm2. EM tests were performed in an oil bath maintained at a constant temperature of 80 °C. It is found that Codoped flux significantly reduced the formation of cracks and voids at the cathode interface. Co atoms entered into the lattice of Cu6Sn5 leading to the formation of（Cu, Co）6Sn5. This thermodynamically stabilized the interfacial intermetallic（IMC） layers both at the anode and cathode sides and suppressed the change in their thickness. The average anodic growth rate of（Cu, Co）6Sn5 interfacial IMC in the doped sample was about one order of magnitude lower compared with that of Cu6Sn5 in the un-doped ***-NP also improved the tensile strength considerably before and after EM. The report suggests that the reliability of solder joint during EM can be improved by using Co-NP doped flux.

关键词： Electromigration damages Tensile strength Intermetallic compounds Nanoparticles Reliability

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