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| 1 | GTA-GG改性胍胶应用于压裂液及相关性能研究显示文摘针对常规胍胶压裂液悬砂性差、水中不溶物含量高污染地层等难题,采用GTA(C6H14ClNO)对胍胶(GG)进行醚化改性,通过环氧化合物的双分子亲核取代反应引入疏水碳链,得到GTA-GG,将其作为压裂液的主剂,研究GTA-GG与体系悬砂性之间的关联。结果表明,压裂体系悬砂性受主剂粘度与水中不溶物含量的影响,而GTA-GG可利用其长分子链与高相对分子质量优化此两种性能,从而提升支撑剂铺置效率,减小沉降速度,增大体系悬砂性能;测量GTA-GG压裂液在变温条件下的应用特性,其实验数据显示,0.3%GTA-GG与0.3%XJL-2交联所得冻胶的粘度为203.6 mPa·s,水中不溶物含量为6.8%,支撑剂沉降速度为0.071 mm/s;100℃条件下,初始滤失量、滤失系数、滤失速度分别为3.810×10^-4m^3/m^2,0.141×10^-4m^3/m1/2,0.685×10^-4m^3/(m^2·min);添加0.02%的DQPJ破胶剂,2 h破胶后溶液粘度为1.7 mPa·s,表面张力为23.91 mN/m。GTA-GG体系悬砂性得到提升,各项性能良好,适用于中高温低渗储层压裂作业。 | 孙孟莹 潘一 王瞳煜 杨双春 ABUBAKAR RANA MUHAMMAD 李敏 | 2020 | 应用化工2020，49，8： | 4 |
| 2 | Recent advances in application of moving bed bioreactors for wastewater treatment from recirculating aquaculture systems: A review显示文摘In recent years,government investments in implementing restrictive public policies on the treatment and discharge of effluents from the aquaculture industry have increased.Hence,efficient and cleaner methods for aquaculture production are needed.Recirculating aquaculture systems(RAS)offers water conservation by recycling the treated aquaculture water for reuse.RAS wastewater treatment using a moving bed bioreactors(MBBRs)process has been considered well suited for maintaining good water quality,thereby making fish farming more sustainable.Currently,improvements were achieved in tackling the influence of salinity,organic matter,disinfectant,and bioreactor start-up process on the MBBR performance efficiency.This review highlights an updated overview of recent development made using MBBR to treat the residual water from RAS.Precisely,nitrification and simultaneous nitrification-denitrification(SND),and other hybrid processes for nitrogen removal were elucidated.Finally,future challenges and prospects of MBBRs in RAS facilities that need to be considered were also proposed. | Abubakar Shitu Gang Liu Aliyu Idris Muhammad Yadong Zhang Musa Abubakar Tadda Wanhe Qi Dezhao Liu Zhangying Ye Songming Zhu | 2022 | Aquaculture and Fisheries2022，7，3： | 3 |
| 3 | Fusarium wilt of banana:Current update and sustainable disease control using classical and essential oils approaches显示文摘Fusarium species were reported to produce biofilms.Biofilms are superficial societies of microbes bounded and endangered by being situated or taking place outside a cell or cells.The most destructive fungal diseases caused by phytopathogens are as a result of biofilms formation.Fusarium wilt of banana(Panama disease)is caused by a soil-borne pathogen called Fusarium oxysporum f.sp.cubense.Fusarium oxysporum occurs in a form of a species complex(FOSC)which encompasses a crowd of strains.Horizontal genetic factor transfer may donate to the observed assortment in pathogenic strains,while sexual reproduction is unknown in the FOSC.Fusarium wilt is a notorious disease on several crops worldwide.Yield loss caused by this pathogen is huge,and significant to destroy crop yields annually,thereby affecting the producer countries in various continents of the world.The disease is also resistant to various synthetic chemical fungicides.However,excessive use of synthetic fungicides during disease control could be lethal to humans,animals,and plants.This calls for alternative eco-friendly management of this disease by targeting the biofilms formation and finally suppressing this devastating phytopathogen.In this review,we,therefore,described the damage caused by Fusarium wilt disease,the concept of filamentous fungal biofilms,classical control strategies,sustainable disease control strategies using essential oils,and prevention and control of vegetables Fusarium wilt diseases. | Abubakar Abubakar Ismaila Khairulmazmi Ahmad Yasmeen Siddique Muhammad Aswad Abdul Wahab Abdulaziz Bashir Kutawa Adamu Abdullahi Syazwan Afif Mohd Zobir Arifin Abdu Siti Nor Akmar Abdullah | 2023 | Horticultural Plant Journal2023，9，1： | 2 |
| 4 | Botanicals, selective insecticides, and predators to control Diaphorina citri (Hemiptera: Liviidae) in citrus orchards显示文摘引起 huanglongbing (HLB ) 或破坏的柠檬 greening 和经济地重要的疾病的亚洲柠檬 psyllid (ACP ) Diaphorina citri Kuwayama 向量病原体在大多数柠檬成长区域介绍。年轻柠檬射击为 psyllid 复制和开发被要求。在冬季期间,柠檬树生产很少或没有新生长。Overwintering 成年人在对另外的害虫和有益的昆虫也吸引人的最新新兴的射击上在春天复制。Botanicals 和相对选择的杀虫药剂能帮助保存有益的昆虫并且把害虫抵抗归结为杀虫药剂。Azadirachtin (Neem ) 的水花, Tropane (曼陀罗属) , Spirotetramat, Spinetoram,和用途广泛的 Imidacloprid 被评估在 10 岁的 “Kinow” 上在春天和夏天控制 ACP生产新生长的柠檬 reticulata Blanco 树。Psyllid 人口高在处理申请前每样品正在平均 5-9 美女或成年人。美女或成年人显著地在所有处理每样品被归结为 0.5-1.5 3 个星期,平均 61%-83% 减小。在 ladybeetles Adalia bipunctata, Aneglei scardoni, Cheilomenes sexmaculata,和 Coccinella septempunctata 的重要减小都没被观察。除了与 Tropane, Syrphids,蜘蛛和绿草蜻蛉在对待的树上被减少。研究被保证在有杀虫药剂的 ACP 和相互作用上估计这些食肉动物的影响。在 ACP 人口的观察减小不能在 HLB 的传播就它的繁殖潜力和角色而言是足够的。后续水花可以被要求用不同杀虫药剂的旋转完成另外的抑制。 | Azhar A. Khan Muhammad Afzal Jawwad A. Qureshi Arif M. Khan Abubakar M. Raza | 2014 | Insect Science2014，21，6： | 2 |
| 5 | Spatial Trend of Foot and Mouth Disease Virus (FMDV) Serotypes in Cattle and Buffaloes, Pakistan显示文摘The present study describes the frequency of Foot and Mouth Disease (FMD) virus serotypes (O, A and Asia-1) in major regions (all provinces) of Pakistan using Indirect Sandwich ELISA. Also, spatial distribution of various FMD serotypes and their comparison is discussed. A total of 590 samples (Epithelial tissue) have been analyzed during a period of five years (2005-2009). Out of 590 samples, 180 were found positive, giving an overall confirmation of FMDV about 33.2 %. Of the prevalent serotypes, FMDV 'O' serotype caused most outbreaks (20.7 %), followed by serotype A (6.6 %) and serotype Asia-1 (4.6 %) while there was no positive case of type 'C'. The study clearly showed that the disease was more frequent in the agro-climatic zones than in hilly areas. Based on the data of 590 samples (>50 outbreaks), the overall prevalence of FMDV in cattle and buffaloes in Pakistan was 33.2 %, while in cattle alone, it was 37.1 %, higher than in buffalo (28.7 %). There were eight cases of mixed serotypes infection, indicating the presence of endemic state of disease. Another significant feature was the change over time. In phase-I (2005-2007), there was an overall prevalence of 29.4 %, while the occurrence of the serotype O, A and Asia-1 was 20.4 %, 2.9 % and 4.7 %, respectively. During phase-II (2008-2009), the overall prevalence was 59.21 %, while those of serotype O, A and Asia-1 were 22.4 %, 31.6 % and 4.0 %, respectively. This clearly indicated a shift from serotype O to A, which may help to explain the occurrence of more severe outbreaks, despite vaccination. | Muhammad Abubakar Muhammad Javed Arshed Qurban Ali Manzoor Hussain | 2012 | Virologica Sinica2012，27，5： | 2 |
| 6 | A Molecular Approach for Genotyping of Hepatitis B Virus Using Restriction Pattern Analysis of S Amplicon in Pakistan显示文摘 | Nazish Badar Umer Farooq Shafaqat Ali Nadia Nisar Muhammad Abubakar Javed Anwar Qureshi | 2012 | 世界最新医学信息文摘2012，12，3： | 2 |
| 7 | Optimizing the Synthesis of Ethyl tert-Butyl Ether in Continuous Catalytic Distillation Column Using New Ion Exchange Resin Catalyst显示文摘重要燃料之一的液体阶段合成氧化,乙醇 tert 丁基醚(ETBE ) ,从乙醇和 tert 丁基,酒精(TBA ) 用离子交换树脂催化剂 CT-145H 在催化蒸馏列(CDC ) 被学习了。有该土地所固有的 1.2 m 高度和 50 公里直径的包装 CDC 开发了反应的节收拾行李被用来产生试验性的数据。在精华的产品纯净上的不同关键变量的效果,被调查发现最佳为 ETBE 操作条件合成。为 0.2 kg | Muhammad Umar Yahia Abubakar AI-Hamed Abdulraheem AI-Zahrani Hisham Saeed Bamufleh | 2013 | Chinese Journal of Chemical Engineering2013，21，10： | 1 |
| 8 | Antibacterial activity of crude extracts of Euphorbia hirta against some bacteria associated with enteric infections 显示文摘 | El-Mahmood Muhammad Abubakar | 2009 | Journal of Medici- hal Plants Research2009，3，7： | 1 |
| 9 | Computational Algorithms for the Analysis of Cancer Virotherapy Model显示文摘Cancer is a common term for many diseases that can affect any part of the body.In 2020,ten million people will die due to cancer.A worldwide leading cause of death is cancer by the World Health Organization(WHO)report.Interaction of cancer cells,viral therapy,and immune response are identified in this model.Mathematical and computational modeling is an effective tool to predict the dynamics of cancer virotherapy.The cell population is categorized into three parts like uninfected cells(x),infected cells(y),virus-free cells(v),and immune cells(z).The modeling of cancerlike diseases is based on the law of mass action(the rate of change of reacting substances is directly proportional to the product of interacting substances).Positivity,boundedness,equilibria,threshold analysis,are part of deterministic modeling.Later on,a numerical analysis is designed by using the standard and non-standard finite difference methods.The non-standard finite difference method is developed to study the long-term behavior of the cancer model.For its efficiency,a comparison of the methods is investigated. | Ali Raza Dumitru Baleanu Muhammad Rafiq Syed Zaheer Abbas Abubakar Siddique Umer Javed Mehvish Naz Arooj Fatima Tayyba Munawar Hira Batool Zaighum Nazir | 2022 | Computers, Materials & Continua2022，，5： | 0 |
| 10 | A Study of Noun Phrase Focus in Fulfulde: The Case Study of Adamawa Dialect显示文摘Focus constructions are syntactically rich aspects of Fulfulde grammar. This paper aims at investigating the nature of noun phrase(NP) focus in Fulfulde with particular reference to Adamawa dialect. The study employed two methodological techniques for data collection: observation and oral interview. These techniques were used in collecting data from different categories of native speakers. The Principles and Parameters theory was adopted as the theoretical framework for data analysis in the study. The study shows that noun phrase NP focus in Adamawa dialect of Fulfulde involves movement of the focused element which is accompanied with a focus marker(FM). The study has identified five different FMs that are commonly used in the dialect depending on the semantic requirement. They are: on, ni, faa, dey and tan. | Idris Muhammad Bello Adamu Abubakar Muhammad Bashir Usman Akisani Y.Samaila | 2019 | Language and Semiotic Studies2019，5，2： | 0 |
| 11 | Hybrid Color Texture Features Classification Through ANN for Melanoma显示文摘Melanoma is of the lethal and rare types of skin cancer.It is curable at an initial stage and the patient can survive easily.It is very difficult to screen all skin lesion patients due to costly treatment.Clinicians are requiring a correct method for the right treatment for dermoscopic clinical features such as lesion borders,pigment networks,and the color of melanoma.These challenges are required an automated system to classify the clinical features of melanoma and non-melanoma disease.The 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 images.Active contour is one of the suitable methods with some drawbacks for the segmentation of irre-gular shapes.An entropy and morphology-based automated mask selection is pro-posed for the active contour method.The proposed method can improve the overall segmentation along with the boundary of melanoma images.In 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 combined.Therefore,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 non-malignant.Experimentations had been carried out on datasets Dermis,DermQuest,and PH2.The results of our advanced method showed super-iority and contrast with the existing state-of-the-art techniques. | Saleem Mustafa Arfan Jaffar Muhammad Waseem Iqbal Asma Abubakar Abdullah S.Alshahrani Ahmed Alghamdi | 2023 | Intelligent Automation & Soft Computing2023，，2： | 0 |
| 12 | Toxicity of Radon-222 in Groundwater across Keana in Nasarawa,Nigeria显示文摘The most common supply of freshwater for drinking,irrigation,and other domestic uses is groundwater;however,because of increased radon concentrations brought on by mining activities,its quality is still a severe concern.Using a liquid scintillation detector,this study investigated the radon content,its related toxicity,and its risk to human health in the groundwater of the Keana in Nasarawa,Nigeria.Ten(10)borehole samples and five(5)well samples totaling fifteen(15)groundwater samples were taken.The results showed that the average radon concentration in water samples from Keana was 2.25 Bq/L.The mean annual effective dosage(ingestion)for adults and children in Keana was 0.016 mSv/y and 0.027 mSv/y,respectively.In Keana,the additional lifetime cancer risk per adult was 5.65×10^(-5),and per child,it was 8.79×10^(-5).The study’s radon concentration was lower than the benchmark of 11.1 Bq/L established in 1991 by the Nigerian Standard Organization and the US Environmental Protection Agency.The results of this study indicate that the level of radon is safe;as a result,people can continue farming and other activities.To reduce the risk of cancer,however,more research could be done in the area.Further research should be done by looking at additional sources in the study area in order to cover the entire zone.Further investigation should be carried out both during the dry and wet seasons because radon concentrations in groundwater alter over time due to dilution by recharge from rainfall. | Abubakar Saidu Bako Usman Rilwan Ibrahim Umar Samson Dauda Yusuf Idris Muhammad Mustapha Abdullahi Abubakar Mundi Ibrahim Maina | 2023 | Advances in Geological and Geotechnical Engineering Research2023，5，2： | 0 |
| 13 | Examination of Surface Water Along River-Rima Floodplain in Wamakko, Sokoto State, Nigeria显示文摘This study examined the hydrochemistry of surface water along the River-Rima floodplain area.Five sampling locations were purposively selected,and,in each point,three samples were taken from surface water(river).The sampling was repeated after 20 days.Thus,a total of 30 samples were collected.Water samples obtained were subjected to laboratory tests.Results revealed that BOD,TDS,Mg2+,and Fe3+are above the World Health Organization(WHO)and Standard Organization of Nigeria(SON)reference guidelines for drinking water quality.Isolates detected from the coliform bacteriological analysis include Enterobacter aerogene,Escherichia coli,and Citrobacter freundii with most of the samples showing coliform bacteria growth above the SON standard for drinking water.Hence,the water in the River-Rima floodplain of the Wamakko area is of low quality and unsafe for drinking.Results of principal component analysis(PCA)revealed external influences such as pollutant wash off and rock weathering as controls on hydrochemistry of surface water.There is some indication of anthropogenic inputs(Cl-,NO3-,and PO42-)based on hierarchical cluster analysis.Elements including Cl-,NO3-,and PO42-are increasingly added into surface water from human activities,mainly agriculture,and municipal sewage. | Abdulqadir Abubakar Usman Murtala Abubakar Gada Aminu Muhammad Bayawa Ibrahim Mustapha Dankani Saadu Umar Wali | 2020 | Journal of Geological Research2020，2，3： | 0 |
| 14 | Impact of smoking on nasal mucociliary clearance time in Kano metropolis,Nigeria显示文摘Background:Mucociliary clearance is an important defense mechanism in human upper and lower respiratory airways.Impairment of this process by certain conditions such as cigarette smoking can predispose to chronic infection and neoplasm of the nose and paranasal sinuses.Methods:This was a cross-sectional study conducted in Kano metropolis,Nigeria.Eligible adults were enrolled,a saccharine test was conducted,and the nasal mucociliary clearance time was assessed.Analysis of the result was carried out using Statistical Product and Service Solutions version 23.0.Results:There were 225 participants categorized into 75 active smokers(33.3%),74 passive smokers(32.9%),and 76 nonsmokers(33.8%,living in a smoking-free zone).The age range of the participants was between 18 and 50 years,with a mean age of(31.2±5.6)years.All participants were males.There were 139(61.8%)of Hausa-Fulani ethnic group,24(10.7%)Yoruba,18(8.0%)Igbo,and 44(19.5%)other ethnic groups.Findings in this study showed that the average mucociliary clearance time among active smokers was prolonged([15.25±6.20]min)compared to passive([11.41±4.25]min)and nonsmokers([9.17±2.76]min)respectively,with a statistical significance(F=33.59,P<0.001).Binary logistic regression revealed that the number of cigarettes smoked per day was an independent predictor of prolonged mucociliary clearance time(P=0.008,odds ratio=0.44,95%confidence interval=0.24–0.80).Conclusion:Active cigarette smoking is associated with prolonged nasal mucociliary clearance time.The number of cigarette sticks smoked per day was found to be an independent predictor of prolonged mucociliary clearance time. | Ahmad Mahmud Abubakar D.Salisu Emmanuel S.Kolo Muhammad G.Hasheem Nafisatu Bello-Muhammad Ahmad R.Tukur Yasir J.Nuhu Rabiu I.Jalo | 2023 | World Journal of Otorhinolaryngology-Head and Neck Surgery2023，9，1： | 0 |
| 15 | Phallic rubber band application to prevent enuresis unusual cause of urethral stricture in a child:A case report显示文摘BACKGROUND Urethral stricture is the abnormal narrowing of the urethra due to spongiofibrosis.The established aetiological factors for urethral stricture abound in our environment.However,the application of a penile rubber band to prevent enuresis thereby causing this pathology is not a familiar occurrence.Patients with enuresis can suffer psycho-social challenges and trauma,especially for a child due to peer stigmatization.This has a great impact on the child's psyche and may affect even his performance at school.The aim of this paper is to highlight the psychosocial impact and management challenges of a child with enuresis(nocturnal urinary incontinence).CASE SUMMARY This is the case of a 10-year-old boy who presented with a history of nocturnal urinary incontinence since birth and lower urinary tract symptoms(LUTS)for 3 years culminating in chronic urinary retention.He maintained a normal urge to micturate and continent of urine during the daytime before the onset of LUTS.He had an antecedent longstanding history of tying a rubber band to the penile shaft mostly before going to the bed at night to prevent enuresis due to his peer stigmatization.He was acutely ill-looking,with distended suprapubic region.The phallus and scrotum were enlarged and oedematous with a circumferential proximal penile shaft scar and ventral penile shaft urethrocutaneous fistula.He was diagnosed to have complete short segment bulbopenile stricture and right ectopic ureter.He subsequent had augmented anastomotic urethroplasty and bilateral non-refluxing ureteroneocystostomy at different sitting.CONCLUSION The adherence to surgical principles of urethral stricture and enuresis management where surgically correctable in a child is associated with the resolution of enuresis and social reintegration. | Abdullahi Khalid Musa Nasiru Abdullahi Abdulwahab-Ahmed Abubakar Sadiq Muhammad Ngwobia Peter Agwu Christopher Suiye Lukong | 2023 | World Journal of Clinical Urology2023，12，2： | 0 |
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