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Journal of Renewable Materials 2022年第5期10卷 1221-1238页

作者： M.T.Mastura R.Nadlene R.Jumaidin s.i.abdul kudus M.R.Mansor H.M.s.Firdaus Fakulti Teknologi Kejuruteraan Mekanikal dan Pembuatan Universiti Teknikal Malaysia MelakaMelaka76100Malaysia Fakulti Kejuruteraan Mekanikal Universiti Teknikal Malaysia MelakaMelaka76100Malaysia

The employment of natural fibres in fused deposition modeling has raised much attention from researchers in finding a suitable formulation for the natural fibre composite ***,selection of suitable natural fibres for fused deposition modeling should be performed before the development of the *** could not be performed without identifying selection criteria that comprehend both materials and fused deposition modeling process ***,in this study,integration of the Analytic Hierarchy Process(AHP)/Analytic Network Process(ANP)has been introduced in selecting the natural fibres based in different clusters of selection *** selection process has been performed based on the interdependency among the selection *** comparison matrices are constructed based on AHP’s hierarchical model and super matrices are constructed based on the ANP’s network *** a result,flax fibre has ranked at the top of the selection by scored 19.5%from the overall *** fibre has excellent material properties and been found in various natural fibre composite *** investigation is needed to study the compatibility of this fibre to be reinforced with a thermoplastic polymer matrix to develop a resultant natural fibre composite filament for fused deposition modeling.

关键词： Material selection natural fibre composites fused deposition modeling analytic hierarchy process analytic network process

Dynamics of Potable Well Water Quality in Key Mining Chiefdoms in Kono District, Eastern sierra Leone

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Open Journal of Applied sciences 2024年第7期14卷 1927-1943页

作者： Richard Tamba simbo Alhaji Brima Gogra Yahaya kudus Kawa Juana Paul Moiwo Department of science and Mathematics College of Arts and Sciences William V.S. Tubman University Harper Liberia Port Loko University College Campus Ernest Bai Koroma University of Science and Technology Port Loko Sierra Leone Department of Chemistry School of Basic Sciences Njala University Bo Sierra Leone Department of Agricultural Engineering School of Technology Njala University Bo Sierra Leone

Groundwater is increasingly being used due to its universal availability and generally good quality. However, the risk of contamination of groundwater due to various human activities such as mining is equally increasing across the globe. in this study, the physical parameters of potable well waters in the key mining areas in Nimikoro and Tankoro Chiefdoms in Kono District were analyzed for compliance with drinking water quality standard. To do this, both unpurged and purged well water samples were collected once every month for a period of one year. some of the well water properties like temperature, Total Dissolved solids (TDs) and Electrical Conductivity (EC) were measured on site and others determined in the laboratory. The data collected from the laboratory analyses were statistically analyzed in Ms Excel, sPss and ArcGis environments for quality trends in time-space fabric. The results showed that well water quality in the study area generally fell short of drinking water quality standards of sierra Leone and WHO. There were high temperature and turbidity during the dry season and then high TDs and EC during the rainy season. Temperature and turbidity also significantly influenced well water quality in the study area, much more than TDs and EC. The implications for drinking water of lower quality than the standard could be huge for the local population and therefore needs the attention of stakeholders in the study area and decision makers in the country.

关键词： Temperature Total Dissolved solids Turbidity Electrical Conductivity Water Quality

seasonal Effect on Weather Elements on Water Table Fluctuation in Potable Wells in Kono District, Eastern sierra Leone

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Open Journal of Applied sciences 2023年第11期13卷 2198-2209页

作者： Richard Tamba simbo Alhaji Brima Gogra Yahaya kudus Kawa Paul Juana Moiwo Department of Chemistry School of Basic Sciences Njala University Bo Sierra Leone Department of science and Mathematics William V.S. Tubman University Harper Liberia Ernest Bai Koroma University of science and Technology Makeni Sierra Leone Department of Agricultural Engineering School of Technology Njala University Bo Sierra Leone

The study investigated the seasonal effects of weather elements on water table fluctuations in drinking wells in Nimikoro and Tankoro Chiefdoms in Kono District, Eastern sierra Leone. The study specifically determined the trends in precipitation, air temperature and relative humidity relative to water table depth and water volume in both manually dug and mechanically drilled water wells in the chiefdoms. The key objective was to provide a clear guide on sustainable well development and operation in the study area and beyond. To do so, the depth of each well was taken and the water table measured. Also, data on key weather elements such as precipitation, air temperature and relative humidity were collected on the 15sup>thsup> of every month for a period of one year. The data were analyzed on Excel, sPss and ArcGis platforms for monthly and seasonal trends in the time-space fabric. The results showed that the depth to water table was high in the dries (small well water volume) and low in the rains (large well water volume) for both manually dug and mechanically drilled wells. Well water temperature increased as temperature increased during the dry season but decreased as temperature decreased during the rainy season. The study showed that weather elements such as precipitation and temperature had direct impact on groundwater availability. This is critical for groundwater development and management in the study area and in sierra Leone at large.

关键词： Groundwater Water Table Relative Humidity Precipitation Temperature

simulation on Group Deleted Potentials for Diagnostics of survival Regression

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材料科学与工程（中英文版） 2010年第7期4卷 90-95页

作者： Noor Akma ibrahim abdul kudus isa Daud institute for Mathematical Research Universiti Putra Malaysia Selangor 43400 Malaysia Department of Mathematics Faculty of Science Universiti Putra Malaysia Selangor 43400 Malaysia Department of statistics Bandung Islamic University Bandung 40116 Indonesia

The identification of multiple high leverage points (HLP) cannot be successfully carried out by using a method developed for handling single HLP. The situation gets worse when it concerns Weibull distributed censored response data. The authors proposed method for identifying multiple HLPs. The proposed method is developed based on the similar problem for handling multiple HLPs in multiple linear regression setting. simulation study is conducted for assessing its performance across a wide range of scenarios. it is be found that the proposed method has good capability to identify multiple HLPs. As a general rule, the proposed method performs better in higher covariate space dimension, larger number of outlying regressor variables, larger outlying leverage distance, larger magnitude of unusualness in response-space, larger number of multiple points clouds and higher percentage of censoring.

关键词：多元线性回归 Weibull分布删除仿真诊断空间维数危险因子反应空间

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昌吉市467例代谢综合征患者膳食营养状况

职业与健康 2018年第8期34卷 1053-1056页

作者：汪丽郭惠荣吐尔逊江.买买提明王先化卡米拉.吐尔逊江杨艳琼阎刘倩子毛丽丹.库都斯新疆医科大学公共卫生学院营养与食品卫生学教研室新疆乌鲁木齐830011 新疆医科大学第一附属医院昌吉分院新疆昌吉831100 昌吉州疾病预防控制中心新疆昌吉831100 新疆维吾尔自治区(乌鲁木齐市)妇幼保健医院新疆乌鲁木齐830000

目的了解昌吉市代谢综合征(Ms)患者的日常膳食情况。方法以467名昌吉市Ms患者为研究对象,对其进行问卷调查、体格检查,并对数据进行分析评价。结果将研究对象各项膳食调查数据与2013版《中国居民膳食营养素参考摄入量》(DRis)相比:男性... 详细信息

目的了解昌吉市代谢综合征(Ms)患者的日常膳食情况。方法以467名昌吉市Ms患者为研究对象,对其进行问卷调查、体格检查,并对数据进行分析评价。结果将研究对象各项膳食调查数据与2013版《中国居民膳食营养素参考摄入量》(DRis)相比:男性钙、钾、碘的摄入量分别为649.2mg、1 254.7mg、13.6g,低于DRis;女性钙、钾、碘、VB2的摄入量分别为580.1mg、1 276.3mg、14.1g、0.9mg,低于DRis。油脂和盐的摄入量分别为39.6、11.9g/d,均超过了DRis;膳食中蛋白质、脂肪的供能百分比分别为14.7%、38.6%,高于推荐比例,而碳水化合物供能比为46.7%,低于推荐比例。被调查人群蛋白质、脂肪、钙、铁的来源以植物性食物为主,来自植物性食物所占比例分别为61.5%、71.5%、73.8%、75.3%。结论昌吉市Ms患者的饮食结构不合理,蔬菜水果的摄入量偏低、油脂和盐的摄入偏高;钙、钾、碘的摄入量不足;3大产热营养素产热分配比例不合理。应加强对该人群营养方面的健康宣传教育,提高其知识水平,调整膳食结构,增加蔬菜水果的摄入,控制油脂和盐的摄入。

关键词：代谢综合征膳食因素昌吉市居民