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Hydraulic and volume change behaviors of compacted highly expansive soil under cyclic wetting and drying

Journal of Rock Mechanics and Geotechnical Engineering 2023年第2期15卷 486-499页

作者： Mohamed Farid Abbas abdullah ali shaker Mosleh A.Al-Shamrani Civil Engineering Department College of EngineeringPrince Sattam bin Abdulaziz UniversityAl KharjSaudi Arabia Soil Mechanics and Geotechnical Engineering Research Institute Housing and Building National Research Center(HBRC)GizaEgypt Bugshan Research Chair in Expansive Soils Civil Engineering DepartmentCollege of EngineeringKing Saud UniversityRiyadhSaudi Arabia

The wide engineered application of compacted expansive soils necessitates understanding their behavior under field conditions.The results of this study demonstrate how seasonal climatic variation and stress and boundary conditions individually or collectively influence the hydraulic and volume change behavior of compacted highly expansive soils.The cyclic wetting and drying(CWD)process was applied for two boundary conditions,i.***.constant stress(CS)and constant volume(CV),and for a wide range of axial stress states.The adopted CWD process affected the hydraulic and volume change behaviors of expansive soils,with the first cycle of wetting and drying being the most effective.The CWD process under CS conditions resulted in shrinkage accumulation and reduction in saturated hydraulic conductivity(k sat).On the other hand,CWD under CV conditions caused a reduction of swell pressure while has almost no impact on k sat.An elastic response to CWD was achieved after the third cycle for saturated hydraulic conductivity(k sat),the third to fourth cycle for the volume change potential under the CV conditions,and the fourth to fifth cycle for the volume change potential under the CS conditions.Finally,both swell pressure(s s)and saturated hydraulic conductivity(k sat)are not fundamental parameters of the expansive soil but rather depend on stress,boundary and wetting conditions.

关键词： Expansive soils Hydraulic conductivity Volume change potential Cyclic wetting and drying(CWD) Swell pressure

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Prevalence of Mastitis and Associated Risk Factors in Lactating Camels (Camelus Dromedarius) on Dairy Farms in Benadir Region, Somalia

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Open Journal of Veterinary Medicine 2024年第6期14卷 111-123页

作者： Shafii abdullahi Mohamed Mahad Mohamud Abdi Abdiaziz Idiris Mohamud Yonis Abukar Mohamed Ahmed ali Omar Abdirahman Barre Chandra shaker Chouhan Md. Amimul Ehsan Faculty of Veterinary Science Benadir University Mogadishu Somalia Faculty of Veterinary Medicine and Animal Husbandry Somali National University Mogadishu Somalia Somali Animal Welfare Society (SAWS) Mogadishu Somalia Camel Research Center Mogadishu Somalia Department of Medicine Faculty of Veterinary Science Bangladesh Agricultural University Mymensingh Bangladesh

The study took a comprehensive approach to understanding mastitis in lactating camels, a disease that significantly impacts milk quantity and quality. This complex and multifactorial disease poses a significant challenge to dairy camel farming, particularly in Somalia. The studys objective was to determine the prevalence of mastitis and the risk factors associated with it among lactating camels on dairy farms in Benadir, Somalia. To achieve this, a cross-sectional study was conducted from May to September 2022 in the Benadir region of Somalia. A total of 96 lactating camels underwent examination using the California Mastitis Test (CMT) to identify clinical and subclinical mastitis cases. Additionally, a questionnaire survey was conducted among 20 farm employees/owners to gather information on hygiene practices, parity, lactation stage, tick infestation, and the presence of udder/teat lesions. Data regarding parity and lactation stage were obtained through owner interviews. The data collected on specifically designed forms were recorded and entered into a Microsoft Excel spreadsheet for analysis using SPSS version 20 statistical software, ensuring a comprehensive and reliable analysis of the data. The studys findings revealed a significant prevalence of camel mastitis, with 34.4% (33/96) of lactating camels affected and clinical and subclinical cases constituting 5.2% and 29.2%, respectively. Quarter-level prevalence was 46.3%, with clinical and subclinical mastitis at 4.7% and 41.6%, respectively. The study also identified significant associations (P < 0.05) among risk factors such as stage of lactation, parity, and age, indicating a higher susceptibility to mastitis in older camels during early lactation compared to those in late lactation and younger camels. These findings underscore the crucial role of inadequate hygienic conditions on camel farms and udder tick infestations in driving the elevated prevalence of mastitis, highlighting the need for improved management practices in dairy farming in Benadir, Soma

关键词： Mastitis Camel Prevalence Risk Factors Somalia

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A Two-Tier Framework Based on GoogLeNet and YOLOv3 Models for Tumor Detection in MRI

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Computers, Materials & Continua 2022年第7期72卷 73-92页

作者： Farman ali Sadia Khan Arbab Waseem Abbas Babar Shah Tariq Hussain Dongho Song shaker EI-Sappagh Jaiteg Singh Department of Software Sejong UniversitySeoul05006Korea Institute of Computer Sciences&Information Technology The University of AgriculturePeshawar25130Pakistan College of Technological Innovation Zayed UniversityDubai19282UAE Department of Software Korea Aerospace UniversitySeoul10540Korea Faculty of Computer Science and Engineering Galala UniversitySuez435611Egypt Information Systems Department Faculty of Computers and Artificial IntelligenceBenha UniversityBanha13518Egypt Chitkara University Institute of Engineering&Technology Chitkara UniversityRajpura140401India

Medical Image Analysis(MIA)is one of the active research areas in computer vision,where brain tumor detection is the most investigated domain among researchers due to its deadly nature.Brain tumor detection in magnetic resonance imaging(MRI)assists radiologists for better analysis about the exact size and location of the tumor.However,the existing systems may not efficiently classify the human brain tumors with significantly higher accuracies.In addition,smart and easily implementable approaches are unavailable in 2D and 3D medical images,which is the main problem in detecting the tumor.In this paper,we investigate various deep learning models for the detection and localization of the tumor in MRI.A novel twotier framework is proposed where the first tire classifies normal and tumor MRI followed by tumor regions localization in the second tire.Furthermore,in this paper,we introduce a well-annotated dataset comprised of tumor and normal images.The experimental results demonstrate the effectiveness of the proposed framework by achieving 97%accuracy using GoogLeNet on the proposed dataset for classification and 83%for localization tasks after finetuning the pre-trained you only look once(YOLO)v3 model.

关键词： Tumor localization MRI Image classification GoogLeNet YOLOv3

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Tailoring nanocomposite membranes of cellulose acetate/silica nanoparticles for desalination

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Journal of Materiomics 2022年第6期8卷 1122-1130页

作者： Amira S.Mohammed ali Moataz M.Soliman Sherif H.Kandil shaker Ebrahim Marwa Khalil Materials Science Department Institute of Graduate Studies and Research(IGSR)Alexandria University163 Horrya AvenueEl-ShatbyP.O.Box 83221526AlexandriaEgypt Nanotechnology and Composite Materials Department Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)P.O.Box 21934New Borg El Arab CityAlexandriaEgypt

Herein, the fabrication of cellulose acetate (CA) silica-based nanocomposite membranes via the dry-wetphase inversion procedure for water desalination was investigated. The modified and unmodified silicananoparticles (MSNPs and SNPs) were prepared by the sol-gel technique. The effect of the SNPs andMSNPs was investigated on the CA membrane's properties and their performance for water desalination.The CA nanocomposite membranes were characterized to study their structure, hydrophilicity, andmorphology. The fabricated nanocomposite membranes showed hydrophilic surface properties. Theperformance of reverse osmosis (RO) membranes was measured using a crossflow RO unit at 10 bar(1 bar = 0.1 MPa). The membrane with 10 mg of SNPs enhanced permeate water flux compared to thepristine CA membrane by 1.6 L/(m2·h). The effect of MSNPs on the nanocomposites' performance waslower than their counterpart in the case of adding SNPs. The membrane with 30 mg of MSNPs showedthe highest permeate water flux among other nanocomposite membranes with a value oAQSf 35.7 L/(m2·h)at 24 bar.

关键词： Silica nanoparticles Amino-modified silica Cellulose acetate Nanocomposite membrane Water desalination Reverse osmosis

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氮掺杂炭材料在锂离子电池负极的研究进展

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新型炭材料（中英文） 2023年第2期38卷 247-282页

作者： Majid shaker ali Asghar Sadeghi Ghazvini Taieb Shahalizade Mehran ali Gaho Asim Mumtaz Shayan Javanmardi Reza Riahifar MENG Xiao-min JIN Zhan GE Qi Lehrstuhl für Physikalische Chemie Ⅱ Universität Erlangen-NürnbergEgerlandstraße 3ErlangenGermany Chongqing 2D Material Institute Liangjiang New AreaChongqing 400714China Department of Materials Science and Engineering Tarbiat Modares UniversityTehran 14115-111Iran School of Chemistry College of ScienceUniversity of TehranTehran 14155-6455Iran Department of Chemical Engineering Tsinghua UniversityBeijing100084China School of Physics Electronics&TechnologyUniversity of YorkHeslingtonYorkYO105DDUnited Kingdom Department of Chemical Engineering University of TehranTehranIran Department of Nanotechnology and Advanced Materials Materials and Energy Research CenterKaraj ***Iran

硬碳、活性炭、碳纳米管(CNTs)、石墨烯、多孔炭和炭纤维等炭材料替代锂离子电池的石墨阳极是目前的研究热点。与石墨相比,这种材料已表现出更好的储锂电化学性能,但仍有待进一步发展空间。其中一种有效的方法是在炭材料结构中加入杂原... 详细信息

硬碳、活性炭、碳纳米管(CNTs)、石墨烯、多孔炭和炭纤维等炭材料替代锂离子电池的石墨阳极是目前的研究热点。与石墨相比,这种材料已表现出更好的储锂电化学性能,但仍有待进一步发展空间。其中一种有效的方法是在炭材料结构中加入杂原子(例如氮),提高其作为锂离子负极时的电化学性能。本综述首先描述了氮掺杂如何对锂离子电池的性能产生积极影响,并举例说明了氮掺杂炭材料的优势。然后,比较了不同N掺杂炭材料中的X射线光电子能谱和扫描隧道显微镜的表征结果,通过统计分析了掺氮量对掺氮碳材料比容量的影响。

关键词：锂离子电池氮掺杂石墨烯碳纳米管多孔炭硬碳

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超级电容器用生物质基多孔炭的研究进展

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新型炭材料 2021年第3期36卷 546-572页

作者： Majid shaker ali Asghar Sadeghi Ghazvini 曹蔚琦 Reza Riahifar 葛奇重庆诺奖二维材料研究院有限公司重庆400714中国 Department of Materials Science and Engineering Tarbiat Modares UniversityTehran ***Iran 重庆大学光电技术与系统教育部重点实验室重庆400044中国 Department of Nanotechnology and Advanced Materials Materials and Energy Research Center of IranTehran 14115-111 Iran

在最近的几十年中,超级电容器(SC)已在电化学能量存储设备中获得了更为重要的地位。SC为使用寿命长的能量存储设备提供了可观的功率密度和令人满意的能量密度,适用于多种应用。因此,这些装置的进一步发展依赖于提供合适,低成本,环境友... 详细信息

在最近的几十年中,超级电容器(SC)已在电化学能量存储设备中获得了更为重要的地位。SC为使用寿命长的能量存储设备提供了可观的功率密度和令人满意的能量密度,适用于多种应用。因此,这些装置的进一步发展依赖于提供合适,低成本,环境友好和丰富的材料作为SC的电极活性材料。在用于SC的电极材料中,活性炭表现出优异的性能。它们具有优异的电化学效率,高比表面积,高吸附性,可调节的表面化学性质,快速的离子/电子传输,低成本和丰富的特性,使其成为SC电极的最佳材料。如果从生物质前驱体制备活性炭,则可以协同增强这些优势。由于生物质为可再生来源,低成本,便捷的加工过程以及对环境的友好性,研究者们将注意力集中在生物质上。在本文中,试图全面了解作为电化学储能装置的SC的基本原理。然后,对各种来源的生物质进行分类和分析。最后,讨论了这些生物质前驱体作为SCs电极材料的应用和活化技术。

关键词：超级电容器电极多孔炭生物质活化

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Effect of Feeding Different Levels of Dietary Protein and Addition of Baker＇s Yeast （Saccharomyces cerevisiae） on Productive Parameters of Awassi Lambs

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Journal of Agricultural Science and Technology(A) 2013年第6期3卷 484-497页

作者： shaker Abdulameer Hassan ali Ameen Saeed Department of Animal Resources College of Agriculture University of Baghdad Baghdad Iraq Department of Animal Resources College of Agriculture University of Babylon Babel Iraq

Forty eight individually fed Awassi male lambs were used in factorial experiment to investigate their responses to feeding concentrate diets containing three levels of dietary crude protein (CP), each was offered without or with baker"s yeast (SC) at rate of 0.5% (on dry matter (DM) basis). Concentrates were offered at rate of 3% of live body weight with free choice of barley straw. Results revealed that higher (P < 0.05) digestible dry matter (DDM) and digestible organic matter (DOM) intakes were achieved due to feeding medium level of CP and to the addition of SC. Addition of SC improved (P < 0.05) gain, lambs fed medium and high levels gained higher (P < 0.05) than those fed the low level of dietary CP. Feed conversion ratio (FCR) based on DM and organic matter (OM) intakes was not significantly affected by level of dietary CP or addition of yeast. Even though, less amount of N required per unit of gain was achieved with low and medium as compared to high levels. Higher DM, nitrogen free extract (NFE) and hemicellulose (P < 0.05), OM, CP, crude fiber (CF) and cellulose (P < 0.01) digestibilities were achieved in lambs fed the medium level of CP, whereas, no significant effect was observed on ether extract (EE), neutral detergent fiber (NDF) and acid detergent fiber (ADF) digestibilities. Results also revealed that digestibility of almost all nutrients was improved with different extent due to addition of SC. Effect of interaction between levels of dietary CP and addition of SC referred to the preferability of addition of SC with medium level of dietary protein.

关键词：日粮粗蛋白水平日粮蛋白质酿酒酵母面包酵母饲喂羔羊生产参数有机物质

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Racial Differences Effects on Oral Health and Periodontal Diseases Extent, Staging and Grading among the Multi-Ethnic Expatriates in Aseer Region, Saudi Arabia

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International Journal of Clinical Medicine 2021年第4期12卷 145-164页

作者： Mohammed M. A. abdullah Al-Abdaly Sultan Mansour A. Alqahtani shaker Saleh M. Alosman Ghadah ali Saad Alqahtani Periodontics and Community Dental Sciences Department College of Dentistry King Khalid University Abha Saudi Arabia College of Dentistry King Khalid University Abha Saudi Arabia

Background: Given the increase in the numbers of expatriates in Saudi Arabia and the shortage of information about expatriates’ oral health and periodontal disease severity and progression. Objectives: This study aimed to evaluate the effects of the racial differences on oral health and periodontal disease extent, staging, and grading among the multi-ethnic expatriates in the Aseer region, Saudi Arabia. Materials and Methods: This cross-sectional study was carried out on 300 expatriates in Aseer region, Saudi Arabia. They were divided into three equal racial different groups (n = 100), Arabs (AR), Asians (AS), and Africans (AF). The interviews of all participants were completed then the clinical examinations of periodontal diseases extent, staging, and grading parameters were performed. Statistical analysis was done by ANOVA test, Tukey’s test, and Chi-square test. The statistical significance level was determined at p Results: There were statistically significant differences in the comparison between the three ethnic/racial groups in clinical parameters except in GBI, PCR, FI, TFO, and BC, where there were no statistically significant differences in the comparison between the three ethnic/racial groups. There were differences associated with age, gender, smoking, and diabetes, without statistically significant differences among the three racial groups. Conclusion: We concluded that most participants in this study had a generalized severe grade 4 plaque-induced gingivitis and localized periodontitis stage III grade B.

关键词： Multi-Ethnics Oral Health Periodontal Diseases Extent Staging and Grading

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Effect of Interaction Phenolic Compounds with Milk Proteins on Cell Line

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Food and Nutrition Sciences 2014年第22期5卷 2130-2146页

作者： Nayra shaker Mehanna Zakaria Mohamed Rezk Hassan Hala Mohamed Faker El-Din ali Abd-Elaziz ali Ryszard Amarowicz Tamer Mohammed El-Messery Dairy Science &Technology Department National Research Center Dokki Egypt Food Science Department Faculty of Agriculture Ain Shams University Cairo Egypt Institute of Animal Reproduction and Food Research of Polish Academy of Sciences Division of Food Science Olsztyn Poland

Plant flavonoids are polyphenolic compounds, commonly found in vegetables, fruits and many food sources that form a significant portion of our diet. These compounds act as anticancer and anti-proliferative but after interaction with milk proteins they form complexes which become less effective than these compounds alone. Investigation has been conducted to delineate the action of some phenolic compounds of natural origin and complexes formed from interactions between phenolic compounds and milk proteins in three human tumors cell lines: Breast (MCF7), Liver (HePG2) and colon (HCT116), these interactions were studied by fourier transform infrared spectroscopy (FTIR). Phenolic compounds have positive effect on human cancer cell lines but after interaction with milk protein and forming complexes, they become less effective than phenolics and some time have negative effect and become pro-cancer;this interaction can be studied by (FTIR) to know which groups do this complex. The spectra were recorded under conditions generally applied in quantitative work. IR spectra were recorded in the region from 4000 - 250 cm–1, but the bands in the region 4000 - 1400 cm–1 were analyzed in detail, since they are characteristic of OH groups while NH groups appeared at (3000 - 4000 cm–1) of various protonic species that undergo hydrogen bonding interaction. Another region of interest was the region from 1800 - 1400 cm–1, characteristic of the bending vibrations of the same group. Since the bands in this region were wide and complex.

关键词： Phenolic Compounds Protein Interaction and Human Cell Line

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Biodegradation of high density polyethylene using Streptomyces species

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Journal of Coastal Life Medicine 2017年第11期5卷 474-479页

作者： ali Farzi alireza Dehnad Najibeh Shirzad Faezeh Norouzifard Faculty of Chemical and Petroleum Engineering University of TabrizTabrizIran Biotechnology Department East Azerbaijan Research and Education Center Agricultural and Natural ResourcesAREEOTabrizIran Young Researchers and Elite Club Ilkhchi BranchIslamic Azad UniversityIlkhchiIran Department of Chemical Engineering Islamic Azad UniversityTabriz BranchTabrizIran

Objective: To investigate the biodegradation of high density polyethylene (HDPE) by Streptomyces species isolated from the soil of East Azerbaijan, Iran. Methods: Powders of HDPE samples were prepared by grinding in different particle sizes of 212, 300, 420, and 500 microns. Each time 50 mg of a sample was poured to a liquid medium containing species. Samples were incubated for 18 days at 28 °C in a shaker-incubator and their degradation percentage was measured by weighting method. Produced metabolite at 18th day was analyzed by gas chromatography-mass spectrometry. Also a film of HDPE was subjected to biodegradation and after one month was analyzed by scanning electron microscope which showed degradation on the surface of the film. Results: The results showed that Streptomyces species degraded 50 mg of HDPE sample with the size of 212 μm about 18.26%, 300 and 420 μm about 14.4%, and 500 μm about 13%. Kinetic modeling of biodegradation process showed that the reaction rate was first order with respect to concentration of HDPE. Based on gas chromatography-mass spectrometry results, no high toxic material was produced during biodegradation of HDPE. Conclusions: The research showed that isolated Streptomyces sp. are capable of degradation of HDPE polymer with high degradation efficiency.

关键词： High density polyethylene Biodegradation Streptomyces Kinetic modeling Toxicity

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