Lafia Journal of Scientific and Industrial Research最新文献

Generating Mortality Rate Intensity for Life Insurance Applications through Novel Method of Successive Differencing Under the Parsimonious Generalised Makeham’s Framework 在准广义马卡姆框架下通过新颖的连续差分法生成人寿保险应用的死亡率强度

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-07-28 DOI: 10.62050/ljsir2024.v2n2.338

G. Ogungbenle, U. W. Sirisena, C. Ukwu, J. S. Adeyele

{"title":"Generating Mortality Rate Intensity for Life Insurance Applications through Novel Method of Successive Differencing Under the Parsimonious Generalised Makeham’s Framework","authors":"G. Ogungbenle, U. W. Sirisena, C. Ukwu, J. S. Adeyele","doi":"10.62050/ljsir2024.v2n2.338","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.338","url":null,"abstract":"Developing and implementing age dependent mortality rates in functional forms have presented critical modelling problems for life insurance and annuity firms thereby creating serious research gaps. A recurring problem with the existing life tables is that their underlying generating functions are not capable of showing any evidence that mortality at 10 declines. This observed irregularity in the age pattern of mortality is the prime motivation in the search for analytical functions which fully capture the observed variations of mortality with age. To fill the gaps identified, the study aims to develop specific life table function under the Generalised Makeham’s framework. The objectives of this study are to (i) compute the mortality rate intensities (ii) compute the curve of deaths densities (iii) compute the probability of deaths and then compare the common domain of definition of these measures. From the method of successive differencing employed to model, the male ageing parameter value fall within the globally accepted interval for the. This method is superior to the method of maximum likelihood estimation which mostly violates the permissible interval of validity. Computational evidence from our analysis proves that under the Generalised Makeham’s law, the mortality rate intensity declines at .","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":"7 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141796885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Comparative Study of the Role of Constant and Logistic Recruitment Rates in Epidemiological Models 流行病学模型中恒定招募率和逻辑招募率作用的比较研究

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-07-27 DOI: 10.62050/ljsir2024.v2n2.316

T. Ashezua, K. I. Isife, F. A. Oguntolu, Hassan Ibrahim

引用次数: 0

Alpha-Spin-Mediated Growth Factors Improvement for Tomato (Lycopersicon esculentum Mill.) Varieties in Jauro Yinu, Ardo-Kola LGA, Taraba State 塔拉巴州 Ardoo-Kola 地方行政区 Jauro Yinu 的番茄（Lycopersicon esculentum Mill.）

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-07-25 DOI: 10.62050/ljsir2024.v2n2.330

A. E. Angyu, Emmanuel Kwon-Ndung

{"title":"Alpha-Spin-Mediated Growth Factors Improvement for Tomato (Lycopersicon esculentum Mill.) Varieties in Jauro Yinu, Ardo-Kola LGA, Taraba State","authors":"A. E. Angyu, Emmanuel Kwon-Ndung","doi":"10.62050/ljsir2024.v2n2.330","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.330","url":null,"abstract":"The study was conducted to investigate the improvement achieved through the treatment of two tomato varieties (ANSAL and Dan-Zaria) with Alpha-Spin® nanoparticles in a screenhouse at Jauro Yinu in Ardo-Kola LGA, Taraba State, Nigeria. Seeds were exposed to the Alpha-Spin® nanoparticles® for durations of 15, 30, 45, and 60 minutes before planting, using a Randomized Complete Block Design with a control group. The results of data collected and analyzed using GENSTAT statistical software showed that Alpha-Spin® treatments did not affect germination time (which was 7 days after planting for ANSAL and 3 days for Dan-Zaria in all exposures) or plant height (Dan-Zaria: 148.33 cm). However, it significantly improved other growth parameters, including stem girth (Dan-Zaria: 19.33 mm), number of branches (Dan-Zaria: 11), flowering time (27 days after transplanting for Dan-Zaria and 31 days for ANSAL with 15 minutes exposure), and number of flower clusters (ANSAL: 37). Overall, Dan-Zaria exhibited better growth than ANSAL in most of the growth parameters. These results indicate that exposure to Alphaspin® nanoparticles enhanced the growth parameters like stem girth, number of branches per plant, and days to 50% growth) in tomato varieties, making it a recommended treatment for trait improvement in tomato breeding programs.\u0000 ","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":"55 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Students’ Attitude and Gender as Determinants of Colleges of Education Students’ Academic Achievement in Chemistry 学生态度和性别是教育学院学生化学学习成绩的决定因素

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-07-01 DOI: 10.62050/ljsir2024.v2n2.298

Busuyi Francis Iyiola, David Ndubisi Ezeh

{"title":"Students’ Attitude and Gender as Determinants of Colleges of Education Students’ Academic Achievement in Chemistry","authors":"Busuyi Francis Iyiola, David Ndubisi Ezeh","doi":"10.62050/ljsir2024.v2n2.298","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.298","url":null,"abstract":"The study examined students’ attitude and gender as determinants of Colleges of Education students’ academic achievement in chemistry. Three research questions were answered and three hypotheses were also tested. A correlation survey research design was adopted for the study. The population for the study made up of all NCE III chemistry students (1,581) in the North East, Nigeria. A sample size of four hundred and twenty (420) NCE III chemistry students was obtained through multi-stage sampling procedure. An adapted structured questionnaire of Students Attitude Scale, SAS that made up of 2 clusters was used for data collection. A chemistry achievement tests (CAT) was also conducted. The instrument reliability test was done using Cronbach Alpha and index is 0.884 found to be valid and reliable. Data analysis was done using Pearson’s product moment correlation and ANOVA to test the hypotheses at 5% level of significance. The findings showed a significant relationship between students’ positive attitude to chemistry and their academic achievement in chemistry. It was on this note that, a recommendation is made among others factors that NCE chemistry lecturers should make their teaching approaches more stimulating and interesting as to produce a positive attitude from students to chemistry courses and towards their chemistry lecturers. Thereby, create a better learning ability in them for a high academic achievement in chemistry at Colleges of Education\u0000 ","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141706539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Reference Evapotranspiration Using Penman-Monteith Equation and Time Series Model in some Selected States in Northern Nigeria 利用彭曼-蒙蒂思方程和时间序列模型估算尼日利亚北部部分州的参考蒸散量

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-06-16 DOI: 10.62050/ljsir2024.v2n2.329

C. O. Iyamu, I. I. Ewa, L. W. Lumbi

{"title":"Estimation of Reference Evapotranspiration Using Penman-Monteith Equation and Time Series Model in some Selected States in Northern Nigeria","authors":"C. O. Iyamu, I. I. Ewa, L. W. Lumbi","doi":"10.62050/ljsir2024.v2n2.329","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.329","url":null,"abstract":"Based on the problem of climate change which greatly affect agriculture and water management in Northern Nigeria, this study estimated reference evapotranspiration using Penman-Monteith equation and time series models in some selected states in Northern Nigeria. The study covered 16 states in Northern Nigeria which were selected using purposive sampling techniques. The materials used for the study consist of secondary data of daily mean records of air temperature, wind speed, solar radiation, and relative humidity from 1st January 1984 to December 2022. From the data, the daily reference Evapotranspiration were computed using Penman-Monteith equation. Based on this, daily and mean annual reference evapotranspiration was obtained. From the result obtained on the daily and annual mean reference evapotranspiration, the time series models were plotted. The time series models plotted consist of daily reference evapotranspiration against time and mean annual reference evapotranspiration against time. The time series plots provided random, nonlinear trend plot which is aperiodic. The plot of the mean and variance of reference evapotranspiration of states against latitudinal trend showed that R2 >0.60, which indicated that the mean and variance of reference evapotranspiration has a strong relationship with latitudinal trend of the states and thus can be used for predictive purpose. This latitudinal trend behavior of the mean and variance of reference evapotranspiration is further supported using spatial distribution map of Northern Nigeria which showed that the lowest mean reference evapotranspiration is location within FCT-Abuja and Jos while the highest mean reference evapotranspiration is located within Sokoto, Kebbi and Gusau.","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141335761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green Synthesis of Nickel Oxide Nanoparticles and its Application in the Degradation of Methyl Red 氧化镍纳米粒子的绿色合成及其在降解甲基红中的应用

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-06-11 DOI: 10.62050/ljsir2024.v2n2.328

Ayorinde O. Nejo, Ademola J. Adetona, Adetoun Lawal

引用次数: 0

Spatio-Temporal Variation of Virtual Temperature in Ilorin, Kwara State, Nigeria 尼日利亚夸拉州伊洛林虚拟温度的时空变化

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-06-11 DOI: 10.62050/ljsir2024.v2n2.270

J. A. Oladiran, Muhammed Sani Otto, Ahmed Abdullahi Sule, F. U. Muhammad, Kamal Gonto, Abe Ayoola, Tijani Alhassan, Zahra Sanusi Liman, O. A. Falaiye, Bukola Olanrewaju Dada

引用次数: 0

Pre-Foundation Investigation Using Electrical Resistivity Method 使用电阻率法进行地基预勘察

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-06-09 DOI: 10.62050/ljsir2024.v2n2.321

T. Fagbemigun, O. Olaseeni, Faith Stephen, J. Amosun, Jacob Tsado

{"title":"Pre-Foundation Investigation Using Electrical Resistivity Method","authors":"T. Fagbemigun, O. Olaseeni, Faith Stephen, J. Amosun, Jacob Tsado","doi":"10.62050/ljsir2024.v2n2.321","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.321","url":null,"abstract":"The proposed Phase II, Faculty of Law Building, was investigated to determine the competence of the sub-soil for building construction. The Electrical Resistivity method was employed for the geophysical investigation. The 2-D Electrical Resistivity Imaging (ERI) and Vertical Electrical Sounding (VES) techniques were adopted using the dipole-dipole electrode and Schlumberger arrays respectively. Using an electrode spacing (a) of 5 m and expansion factor (n) varying from 1 – 5, electrical resistivity measurements were taken along two traverses having South – North (SN) and East – West (EW) orientations respectively. Thirteen VES stations were occupied within the study area with half-current electrode spacing (AB/2) ranging from 1 – 65 m. The interpretation of the geophysical data was carried out using DIPRO software. The 2D ERI showed that the sub-soil along traverse 1 and northern part of traverse 2 has high resistivity values (>900 Ωm) at 4.5 m depth. The geoelctric sections identified three geologic layers comprising topsoil, weathered layer and fresh basement. The electrical resistivity results revealed that the sub-soils on or within the proposed site are found to be fairly competent for engineering structure.","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":" 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141366746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative Studies on Nutritive and Antinutritive Values of Cowpea (Vigna unguiculata L. Walp) and Rice (Oryza sativa L.) 豇豆（Vigna unguiculata L. Walp）和大米（Oryza sativa L. ）营养价值和抗营养价值的比较研究

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-06-08 DOI: 10.62050/ljsir2024.v2n2.322

M. O. Aremu, Ruth Linus Edem, S. Aremu, S. C. Ortutu, E. B. Ayakeme, Ijeoma Maureen Enyioha, H. I. Muhammad, B. Obasi

{"title":"Comparative Studies on Nutritive and Antinutritive Values of Cowpea (Vigna unguiculata L. Walp) and Rice (Oryza sativa L.)","authors":"M. O. Aremu, Ruth Linus Edem, S. Aremu, S. C. Ortutu, E. B. Ayakeme, Ijeoma Maureen Enyioha, H. I. Muhammad, B. Obasi","doi":"10.62050/ljsir2024.v2n2.322","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.322","url":null,"abstract":"The study was carried out on proximate, mineral and antinutritional compositions of cowpea (Vigna unguiculata L. Walp) and rice (Oryza sativa L.) in order to compare the nutritional and antinutritional composition of these two important food crops. The standard analytical techniques were used for all the determinations and analyses. The calculated parameters were metabolized energy, mineral safety index (MSI), mineral ratios of some minerals. The results of the proximate composition (%) revealed that crude fat (2.46 ± 0.07), moisture (5.85 ± 0.03) and total energy (1539.25 kj/100g) contents were higher for rice than cowpea (1.61 ± 0.06, 4.58 ± 0.10 and 1489.27 kj/100g), respectively while cowpea had higher level of crude protein (10.10 ± 0.14) and crude fiber (4.67 ± 0.17) than the crude protein (9.10±0.13) and crude fibre (2.37±0.08) of rice. No mineral had a deleterious value in the MSI because they had their table value (TV) > calculated value (CV). The phytate, tannin and oxalate concentrations were higher in rice (90.08±0.52 %, 6.01±0.01 mg/100g and 5.05±0.18 %) compared with that of the cowpea (40.45±2.68 %, 3.11±0.08 mg/100g and 4.37±0.09 %) while cowpea had higher concentrations in total phenol (24.79±2.55 %) and flavonoids (4.55±0.07 %) than rice. Antinutritional analysis showed that rice had higher levels of phytic acid and tannins, which can reduce the bioavailability of minerals, while flavonoids were higher in cowpea. This study concludes that both rice and cowpea are important sources of nutrients and should be consumed in combination to ensure a balanced diet. ","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":"170 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141368792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of Geoelectric Method for Groundwater Assessment in Awe Brine Area, Awe Nasarawa Nigeria 在尼日利亚纳萨拉瓦州阿韦卤水区使用地质电法评估地下水

Lafia Journal of Scientific and Industrial Research Pub Date : 2024-06-08 DOI: 10.62050/ljsir2024.v2n2.245

Mohammed Aliyu Kaura, Abdullahi Ahmed Sule, Umar, Nuhu Degree, Saidu Bello Mamudu, Yohannah Andrawus, Badamisi Muhammad Maina, Abdulrafiu Sherif, Aliyu Salihu

{"title":"Use of Geoelectric Method for Groundwater Assessment in Awe Brine Area, Awe Nasarawa Nigeria","authors":"Mohammed Aliyu Kaura, Abdullahi Ahmed Sule, Umar, Nuhu Degree, Saidu Bello Mamudu, Yohannah Andrawus, Badamisi Muhammad Maina, Abdulrafiu Sherif, Aliyu Salihu","doi":"10.62050/ljsir2024.v2n2.245","DOIUrl":"https://doi.org/10.62050/ljsir2024.v2n2.245","url":null,"abstract":"A total of Forty-five vertical electrical soundings (VES) were conducted using Schlumberger electrode configuration to map the groundwater condition in the Awe Brine Field, Nasarawa, Nigeria. The result of the study exhibited significant variations in resistivity across the area, which allowed the generation of iso-resistivity contour maps for four distinct geoelectric layers. The first layer, consisting of a thin top layer of unconsolidated material, displayed resistivity values ranging from 85 Ωm to 2437.8 Ωm. The second layer, composed of shale-sandstone, has a resistivity between 1.2 Ωm to 785 Ωm. The third layer showed resistivity ranging from 1.2 Ωm to 430.5 Ωm. it was observed that a thick layer of sandy clay contained fresh water, with resistivity levels ranging from 27 Ωm to 1825.9 Ωm. The Dar Zarrouk parameters were calculated to evaluate the protective attributes of the aquifers. The analysis revealed that the longitudinal conductance (Sc) ranged from 0.06 to 3.86 S, the longitudinal resistivity (ρL)) ranged from 71.66 to 3830.4 Ωm, and the transverse resistance (TR) ranged between 2.55 and 1102.18 Ω. Based on the resistivity values and thickness of the geoelectric layers, the researchers identified four distinct aquifer zones labelled A, B, C, and D. Notably, the third layer, referred to as the C horizon, displayed significantly lower resistivity and higher salinity compared to the other layers. This layer corresponds to the Awe Formation, renowned for its brine deposits. Consequently, the study suggests that exploring freshwater resources near New Awe is more promising than the Old Awe area","PeriodicalId":511647,"journal":{"name":"Lafia Journal of Scientific and Industrial Research","volume":" 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141369433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0