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Efficiency test of modeled empirical equations in predicting soil loss from ephemeral gully erosion around Mubi,Northeast Nigeria

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International Soil and Water Conservation Research 2016年第1期4卷 12-19页

作者： Ijasini John Tekwa abubakar Musa Kundiri Alhaji Maigana Chiroma Department of Agricultural Technology The Federal PolytechnicP.M.B 35MubiAdamawa StateNigeria Department of Soil Science Faculty of AgricultureFederal University DutseP.M.B 7156DutseJigawa StateNigeria Department of Soil Science Faculty of AgricultureUniversity of MaiduguriP.M.B 1069MaiduguriBorno StateNigeria

A field study was carried out to assess soil loss from ephemeral gully(EG)erosion at 6 different locations(Digil,Vimtim,Muvur,Gella,Lamorde and Madanya)around the Mubi area between April,2008 and October,*** location consisted of 3 watershed sites from where data was *** shape,land use,and conservation practices were noted,while EG length,width,and depth were ***-chemical properties of the soils were studied in the field and *** loss was both measured and predicted using modeled empirical *** showed that the soils are heterogeneous and lying on flat to hilly topographies with few grasses,shrubs and tree *** soils comprised of sand fractions that predominated the texture,with considerable silt and clay *** empirical soil loss was generally related with the measured soil loss and the predictions were widely reliable at all sites,regardless of *** measured and empirical aggregate soil loss were more related in terms of volume of soil loss(VSL)(r^(2)=0.93)and mass of soil loss(MSL)(r^(2)=0.92),than area of soil loss(ASL)(r^(2)=0.27).The empirical estimates of VSL and MSL were consistently higher at Muvur(less vegetation)and lower at Madanya and Gella(denser vegetations)in both *** maximum efficiency(M_(se))of the empirical equation in predicting ASL was between 1.41(Digil)and 89.07(Lamorde),while the M_(se) was higher at Madanya(2.56)and lowest at Vimtim(15.66)in terms of VSL prediction *** M_(se) also ranged from 1.84(Madanya)to 15.74(Vimtim)in respect of MSL *** results led to the recommendation that soil conservationists,farmers,private and/or government agencies should implement the empirical model in erosion studies around Mubi area.

关键词： Empirical model Soil loss Prediction efficiency Ephemeral gully erosion Mubi Northeast Nigeria

Antiacanthamoebic properties of natural and marketed honey in Pakistan

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Asian Pacific Journal of Tropical Biomedicine 2016年第11期6卷 967-972页

作者： Farzana abubakar Yousuf Malik Hassan Mehmood Abdul Malik Ruqaiyyah Siddiqui Naveed Ahmed Khan Department of Biological and Biomedical Sciences Aga Khan University Department of Biological Sciences Faculty of Science and Technology Sunway University

Objective: To determine antiacanthamoebic activity of natural and marketed honey ***: Natural honey samples were collected directly from the bee hive and marketed honey samples were purchased from the local market in Karachi, Pakistan. Both honey samples were tested for their flavonoid content(quercetin equivalent per gram of the extract) and phenolic content(gallic acid equivalent per gram). Furthermore, their antioxidant activity was determined by measuring 2,2-diphenyl-1-picrylhydrazyl. Using amoebistatic and amoebicidal assays, the effects of honey samples were tested against growth and viability of Acanthamoeba ***: Natural honey exhibited potent amoebistatic and amoebicidal effects, in a concentration-dependent manner. Honey-treated Acanthamoeba castellanii showed loss of acanthopodia, following which amoebae detached, rounded up, reduced in size,decreased in cytoplasmic mass and they were observed floating in the culture ***, honey-treated amoebae did not revive when inoculated in fresh growth medium, however, glycerol-treated amoebae exhibited viable trophozoite and active growth. In contrast, marketed honey samples varied in their efficacy against Acanthamoeba castellanii. The proportion of flavonoid, as determined by quercetin measurements and the proportion of phenolic, as determined by gallic acid measurements was higher in natural honey compared with marketed honey. Similarly, the antioxidant activity, as determined by 2,2-diphenyl-1-picrylhydrazyl scavenging activity was higher in natural honey vs. marketed ***: This study shows that natural honey has antiacanthamoebic properties and possesses higher flavonoid, phenolic and antioxidant properties compared with the marketed honey. These findings are of concern to the public, health officials, and to the manufacturers regarding production of honey for medical applications.

关键词： Honey Acanthamoeba Amoebicidal Amoebistatic

Recent advances in application of moving bed bioreactors for wastewater treatment from recirculating aquaculture systems: A review

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Aquaculture and Fisheries 2022年第3期7卷 244-258页

作者： abubakar Shitu Gang Liu Aliyu Idris Muhammad Yadong Zhang Musa abubakar Tadda Wanhe Qi Dezhao Liu Zhangying Ye Songming Zhu Institute of Agricultural Bio-Environmental Engineering College of Bio-systems Engineering and Food ScienceZhejiang UniversityHangzhou310058China Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture Ministry of AgricultureHangzhou310058China Department of Agricultural and Environmental Engineering Faculty of EngineeringBayero UniversityKanoNigeria

In recent years,government investments in implementing restrictive public policies on the treatment and discharge of effluents from the aquaculture industry have ***,efficient and cleaner methods for aquaculture production are *** aquaculture systems(RAS)offers water conservation by recycling the treated aquaculture water for *** wastewater treatment using a moving bed bioreactors(MBBRs)process has been considered well suited for maintaining good water quality,thereby making fish farming more ***,improvements were achieved in tackling the influence of salinity,organic matter,disinfectant,and bioreactor start-up process on the MBBR performance *** review highlights an updated overview of recent development made using MBBR to treat the residual water from ***,nitrification and simultaneous nitrification-denitrification(SND),and other hybrid processes for nitrogen removal were ***,future challenges and prospects of MBBRs in RAS facilities that need to be considered were also proposed.

关键词： Ammonia removal Biofilm carriers Sustainability Salinity Nitrogenous compound Accelerated start-up

Liveability experience of mountain-base residents:the case of Idi-Ori-Shasha Mountain,Ibadan,Nigeria

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Journal of Mountain Science 2022年第9期19卷 2693-2702页

作者： Taiwo Oladapo BABALOLA abubakar Alhaji AHMED Ayobami Abayomi POPOOLA Tolulope Mary ADEDEJI Olajumoke Ololade TUNJI-ADEPOJU Institute of Humanities Governance and Social SciencesPan African University(PAUGHSS)Yaounde 900286Cameroon Department of Urban and Regional Planning University of IbadanIbadan 110115Nigeria SARChI Chair for Inclusive Cities University of KwaZulu-NatalDurban 2954South Africa Department of Sociology University of IbadanIbadan 110115Nigeria

The increasing influx of people to mountain base environments has opened up the area to a myriad of problems that threaten the liveability of the residents and the sustainability of the ***,sufficient empirical investigations have not looked at the particular issues that threaten their liveability *** the case of Idi-OriShasha mountain,this study examined the condition of informal urbanization at the mountain-base and equally investigated residents’living *** conducted questionnaire survey with closed and open-ended questions to collect data from 65 out of 533 houses within a buffer of 250 m from the mountain and retrieved 50 completed householdhead *** results revealed that majority of the residents were not satisfied living at the mountainbase because of the inadequate facilities that have contributed to their current living ***,mountain-base residents are liable to many liveability threats such as noise pollution,sleeplessness,building/wall cracks,destructive erosion,and water *** study recommends adequate infrastructural provision intervention in the area in order to upscale liveability dimensions and general residents’living ***,similar studies could be conducted elsewhere for validation and comparison of findings.

关键词： Liveability Mountain Urbanization Living experience

Comprehensive review of text‑mining applications in finance

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Financial Innovation 2020年第1期6卷 732-756页

作者： Aaryan Gupta Vinya Dengre Hamza abubakar Kheruwala Manan Shah Department of Computer Science Nirma UniversityAhmedabadGujaratIndia Department of Chemical Engineering School of TechnologyPandit Deendayal Petroleum UniversityGandhinagarGujarat 382007India

Text-mining technologies have substantially affected financial *** the data in every sector of finance have grown immensely,text mining has emerged as an important field of research in the domain of ***,reviewing the recent literature on text-mining applications in finance can be useful for identifying areas for further *** paper focuses on the text-mining literature related to financial forecasting,banking,and corporate *** also analyses the existing literature on text mining in financial applications and provides a summary of some recent ***,the paper briefly discusses various text-mining methods being applied in the financial domain,the challenges faced in these applications,and the future scope of text mining in finance.

关键词： Text mining Machine learning Financial forecasting Sentiment analysis Text classification Corporate finance

Botanicals, selective insecticides, and predators to control Diaphorina citri （Hemiptera： Liviidae） in citrus orchards

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Insect Science 2014年第6期21卷 717-726页

作者： Azhar A. Khan Muhammad Afzal Jawwad A. Qureshi Arif M. Khan abubakar M. Raza Department of Agricultural Entomology University of Sargodha Sargodha Pakistan Department of Entomology & Nematology Southwest Florida Research and Education Center Institute of Food and Agricultural Sciences University of Florida Immokalee Florida USA Department of Biotechnology University of Sargodha Sargodha Pakistan

The Asian citrus psyllid （ACP） Diaphorina citri Kuwayama vectors pathogens that cause huanglongbing （HLB） or citrus greening devastating and economically im- portant disease present in most citrus growing regions. Young citrus shoots are required for psyllid reproduction and development. During winter citrus trees produce little or no new growth. Overwintering adults reproduce in spring on newly emerging shoots also attractive to other pests and beneficial insects. Botanicals and relatively selective insecti- cides could help to conserve beneficial insects and reduce pest resistance to insecticides. Sprays of Azadirachtin （Neem）, Tropane （Datura）, Spirotetramat, Spinetoram, and broad- spectrum Imidacloprid were evaluated to control ACP in spring and summer on 10-year-old ＂Kinow＂ Citrus reticulata Blanco trees producing new growth. Psyllid populations were high averaging 5-9 nymphs or adults per sample before treatment application. Nymphs or adults were significantly reduced to 0.5-1.5 per sample in all treatments for 3 weeks, aver- age 61%-83% reduction. No significant reduction in ladybeetles Adalia bipunctata, Ane- glei scardoni, Cheilomenes sexmaculata, and Coccinella septempunctata was observed. Syrphids, spiders and green lacewings were reduced in treated trees except with Tropane. Studies are warranted to assess impact of these predators on ACP and interaction with insecticides. Observed reduction in ACP populations may not be enough considering its reproductive potential and role in the spread of HLB. Follow-up sprays may be required to achieve additional suppression using rotations of different insecticides.

关键词： Asian citrus psyllid biopesticides Coccinellids huanglongbing predators

Hybrid Color Texture Features Classification Through ANN for Melanoma

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Intelligent Automation & Soft Computing 2023年第2期35卷 2205-2218页

作者： Saleem Mustafa Arfan Jaffar Muhammad Waseem Iqbal Asma abubakar Abdullah S.Alshahrani Ahmed Alghamdi Faculty of Computer Science&Information Technology Superior UniversityLahore54600Pakistan Department of Software Engineering Superior UniversityLahore54600Pakistan Department of Computer Science&Artificial Intelligence College of Computer Science&EngineeringUniversity of Jeddah21493Saudi Arabia Department of Software Engineering College of Computer Science and EngineeringUniversity of Jeddah21493Saudi Arabia

Melanoma is of the lethal and rare types of skin *** is curable at an initial stage and the patient can survive *** is very difﬁcult to screen all skin lesion patients due to costly *** are requiring a correct method for the right treatment for dermoscopic clinical features such as lesion borders,pigment networks,and the color of *** challenges are required an automated system to classify the clinical features of melanoma and non-melanoma *** trained clinicians can overcome the issues such as low contrast,lesions varying in size,color,and the existence of several objects like hair,reﬂections,air bubbles,and oils on almost all *** contour is one of the suitable methods with some drawbacks for the segmentation of irre-gular *** entropy and morphology-based automated mask selection is pro-posed for the active contour *** proposed method can improve the overall segmentation along with the boundary of melanoma *** this study,features have been extracted to perform the classiﬁcation on different texture scales like Gray level co-occurrence matrix(GLCM)and Local binary pattern(LBP).When four different moments pull out in six different color spaces like HSV,Lin RGB,YIQ,YCbCr,XYZ,and CIE L*a*b then global information from different colors channels have been ***,hybrid fused texture features;such as local,color feature as global,shape features,and Artiﬁcial neural network(ANN)as classiﬁers have been proposed for the categorization of the malignant and *** had been carried out on datasets Dermis,DermQuest,and *** results of our advanced method showed super-iority and contrast with the existing state-of-the-art techniques.

关键词： Gray level co-occurrence matrix local binary pattern artiﬁcial neural networks support vector machines color skin cancer dermoscopic

Maximizing Oil Palm Yield: Innovative Replanting Strategies for Sustainable Productivity

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Journal of Environmental & Earth Sciences 2023年第2期5卷 61-75页

作者： Ahmed abubakar Susilawati Kasim Mohd Yusoff Ishak Md Kamal Uddin Faculty of Forestry and Environment Universiti Putra MalaysiaSerdangSelangor43400Malaysia Faculty of Agriculture University Putra Malaysia SerdangSelangor43400Malaysia

This paper examines the significance of innovative replanting strategies in maximizing oil palm yield while ensuring sustainable *** a comprehensive review of literature and analysis of current practices,the major findings of this research highlighted the importance of advanced breeding and clonal selection in developing high-yielding and disease-resistant oil palm *** agriculture technologies,including IoT devices,drones,and sensors,were identified as critical tools for data-driven decision making,optimizing resource efficiency,and reducing environmental *** land use planning and agroforestry integration emerged as key strategies to balance productivity with environmental *** broader impacts of this work extend to other agricultural sectors and land use planning,offering valuable insights for policymakers and stakeholders to promote responsible and resilient agricultural *** embracing innovative replanting strategies,the oil palm industry can contribute to a more sustainable and prosperous future,balancing economic growth with environmental *** research and collaboration are essential to achieve these goals and foster a harmonious coexistence between productivity and sustainability,integrating precision agriculture technologies for resource optimization and reduced environmental impact,promoting sustainable land use planning and agroforestry integration to enhance biodiversity and ecosystem *** collaborations between governments,industry players,and research institutions for innovation and knowledge exchange is essential.

关键词： Replanting strategies Oil palm yield Sustainable productivity Precision agriculture Agroforestry integration

Electroless Plating of Palladium Membranes on Porous Substrates for Hydrogen Separation and the Effects of Process Factors on Plating Rate and Efficiency: A Review

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Journal of Power and Energy Engineering 2020年第2期8卷 1-19页

作者： abubakar Alkali Centre for Process Integration & Membrane Technology School of Engineering Robert Gordon University Aberdeen UK Department of Petroleum and Natural Gas Engineering Baze University Abuja Nigeria

The electroless plating of palladium and palladium alloy membranes is fast becoming an important and enabling technology. This is more so when juxtaposed with the rising demand for high purity hydrogen for applications particularly in proton exchange membrane fuel cells (PEMFC). The effect of process factors such as sensitization and activation during surface modification, concentration of the reducing agent, plating temperature, time, pH, additives, air aeration on plating efficiency, quality of the palladium film and deposit morphology is reviewed with the aim of identifying areas requiring further investigation. The paper also reviews how these process factors could be optimised for better plating efficiency and overall membrane quality. The concentration of the reducing agent has been identified as the limiting factor on plating efficiency albeit other process factors separately impact on the plating efficiency. Furthermore, bulk precipitation caused by concentration of the reducing agent has been identified as a major problem during electroless plating with hydrazine based plating baths. To ameliorate this problem, a multi step addition of the hydrazine reducer in separate portions has been recommended.

关键词： Electroless Plating Hydrogen Palladium Membranes Plating Efficiency Process Factors