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Assessment of Resource-Use Efficiency in Irrigated Rice Production in Dadinkowa, Gombe State, Nigeria

Journal of Agricultural Science and Technology(B) 2014年第6期4卷 427-433页

作者： Suleiman Mohammed Nasiru Abubakar John E.Ochi usman haruna Department of Agricultural Economics and Extension Abubakar Tafawa Balewa University Bauchi PMB 0248 Bauchi StateNigeria Department of Agricultural Economics and Extension Federal University Dutse PMB 7156 Jigawa State Nigeria

The study examined the levels of resource-use efficiency of rice farmers unde,r irrigation method in Dadinkowa, Gombe state of Nigeria. Using questionnaire, data were collected during the year 2010 irrigation season from 120 randomly sampled rice irrigators and the data were analyzed using multiple regression and marginal analyses. Results showed that significant factors influencing irrigated rice production were labour （P 〈 0.001）, land and fertilizer （P 〈 0.01）. In addition, the coefficient of determination （R2）, the F-ratio and the standard error of the mean （S） were found to be 0.471, 16.37＊＊＊ and 8.908, respectively. The results also indicated that efficiency values of land, seeds, fertilizer and labour were 1.234, 0.498, 2.352 and 1.620, respectively. Finally, it was found that resource-use among the farmers were not efficient thus equipment, land, fertilizer and labour inputs shall be increased by 78.3%, 18.9%, 57.5% and 38.3%, respectively, while seed input shall be reduced by 50.2% for the farmers to attain optimal resource utilization.

关键词： Efficiency resource-use irrigated rice Dadinkow Gombe

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The Advent of Wide Bandgap Green-Synthesized Copper Zinc Tin Sulfide Nanoparticles for Applications in Optical and Electronic Devices

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Journal of Materials Science and Chemical Engineering 2023年第3期11卷 22-33页

作者： Opeyemi S. Akanbi haruna A. usman Gbemi F. Abass Kehinde E. Oni Akinsanmi S. Ige Bola P. Odunaro Idowu J. Ojo Julius A. Oladejo Halimat O. Ajani Adnan Musa Joshua Ajao Department of Pure and Applied Physics Ladoke Akintola University of Technology Ogbomosho Nigeria Department of Mechanical Engineering Jigawa State Polytechnic Dutse Nigeria Department of Materials Science and Engineering Hohai University Nanjing China Department of Mechanical Engineering Ekiti State University Ado Ekiti Nigeria Department of Materials Science and Engineering University of Colorado Boulder Boulder USA Department of Chemical Engineering Ladoke Akintola University of Technology Ogbomoso Nigeria Department of Mechanical Engineering Federal University of Technology Akure Nigeria Department of Biotechnology and Genetics Russian State Agrarian University Moscow Russia

Power-electronic devices are widely used in various applications, such as voltage and frequency control for transmitting and converting electric power. As these devices are becoming increasingly important, there is a need to reduce their losses and improve their performance to reduce electric power consumption. Current power semiconductor devices, such as inverters, are made of silicon (Si), but the performance of these Si power devices is reaching its limit due to physical properties and energy bandgap. To address this issue, recent developments in wide bandgap (WBG) semiconductor materials, such as silicon carbide (SiC) and gallium nitride (GaN), offer the potential for a new generation of power semiconductor devices that can perform significantly better than silicon-based devices. In this research, a green synthesized copper-zinc-tin-sulfide (CZTS) nanoparticle is proposed as a new WBG semiconductor material that could be used for optical and electronic devices. Its synthesis, consisting of the production methods and materials used, is discussed. The characterization is also discussed, and further research is recommended in the later sections to enable the continual advancement of this technology.

关键词： Wide Bandgap Semiconductor Semiconductor Electronic Device Power Device Optical Device CZTS

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Prevalence and Predictors of High-Risk HPV in Nigeria

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Advances in Infectious Diseases 2022年第4期12卷 745-757页

作者： Aigbe Gregory Ohihoin Patrick Azuka Okwuraiwe Adesola Zaidat Musa Gbenga Olorunfemi Chika Kingsley Onwuamah Fehintola Ige Olufemi Samuel Amoo Rosemary Audu Felix Okogbo Babafemi Daniyan Terrumun Swende Geoffrey Chukwubuike Onyemelukwe haruna Daru Hadiza usman Oladapo Shittu Jonah Musa Oliver Chukwujekwu Ezechi Innocent Achanya Ujah Nigerian Institute of Medical Research (NIMR) Lagos Nigeria School of Public Health University of Witwatersrand Johannesburg South Africa College of Medicine Ambrose Alli University Edo State Nigeria National Obstetric Fistula Center Abakaliki Ebonyi State Nigeria Benue State University Benue State Nigeria Ahmadu Bello University Zaria Kaduna State Nigeria University of Jos Jos Nigeria University of Maiduguri Borno State Nigeria

Introduction: Cervical cancer remains a major cause of morbidity and mortality among the female population in sub-Saharan Africa. Vaccination against human papillomavirus (HPV), the main causative agent, has the potential to eradicate cervical cancer. In-country evidence of sub-types of HPV associated with cervical cancer is scanty, thus necessitating this study. Methods: A cross-sectional study was performed using a multistage sampling technique. A molecular technique using the Cobas 4800 machine was used for genotyping. Results: 570 participants were recruited for the study. The mean age of the participants was 32.4 ± 5.2 years. The age of sexual debut ranged from 15 - 24 years with a median of 19 years. 194 participants were positive for high-risk HPV giving a prevalence of 34%. 3% (n = 17) were positive for HPV, 16. 4% (23) had a positive result for HPV, 18. 27% (n = 154) had a positive result for other high-risk groups (OHR) other than HPV 16 or 18. Positive status for high-risk HPV is associated with the presence of genital warts (OR = 7.5), a Positive HIV status (OR = 3.48), abnormal vaginal discharge (OR = 2.20), multiple sexual partners (OR = 2.30), and obesity (OR = 2.70). The prevalence of HIV in the study population was 6.84% (n = 39). Conclusion: Another High-risk HPV other than 16 and 18 appears to be the predominant form of HPV infection in Nigerian women. The risk of being positive for high-risk HPV is associated with the presence of genital warts, abnormal vaginal discharge, a positive HIV status, multiple sexual partners and Obesity. It is therefore necessary to disaggregate and study these high-risk sub-types.

关键词： HPV Cervical Cancer Prevalence Predictors Nigeria

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Prevalence and Predictors of High-Risk HPV in Nigeria

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Advances in Infectious Diseases（传染病进展） 2022年第4期

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