Asian Journal of Physical and Chemical Sciences最新文献_第10页

Evaluation of Indoor and Outdoor Radon of Different Residential Buildings and Its Exposure Risks 不同居住建筑室内外氡及其暴露风险评价

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-07-14 DOI: 10.9734/ajopacs/2018/42334

C. Ononugbo, B. Osiga

引用次数: 2

Reason for Higher Rate of Gas Flow per Unit Cross-Sectional Area of Smaller Pore Aperture 孔径越小，单位截面积气体流速越高的原因

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-07-05 DOI: 10.9734/ajopacs/2018/41975

Ikechukwu Iloh Udema

{"title":"Reason for Higher Rate of Gas Flow per Unit Cross-Sectional Area of Smaller Pore Aperture","authors":"Ikechukwu Iloh Udema","doi":"10.9734/ajopacs/2018/41975","DOIUrl":"https://doi.org/10.9734/ajopacs/2018/41975","url":null,"abstract":"Objectives: The objectives of this research are to 1) Formulate equation that shows the effect of pore aperture (or confinement) on not just the mass movement of molecules but the movement of individual molecules and 2) elucidate the derived equation and illustrate with diameter of pipes or tubes in literature. Place and Duration of Study: Department of Chemistry and Biochemistry, Research Division, Ude International Concepts LTD (862217), B. B. Agbor, Delta State, Nigeria; Owa Alizomor Secondary School, Owa Alizomor, Ika North East, Delta State, Nigeria. The research started between 2011 and 2013 and discontinued until March, 2018. Methods: Theoretical and calculational. Results: The results reaffirm that higher volume of gas flows through pore aperture of longer diameter than the shorter diameter. The same is applicable to longer tubes. The velocity of flow (volume of gas diffusing per cross-sectional area of pore aperture per unit time) is higher for shorter diameter of pore aperture than the longer diameter of pore aperture. The converse is the case for the entropy implicit in the flow of gas through pores of different diameter. Original Research Article Udema; AJOPACS, 6(3): 1-11, 2018; Article no.AJOPACS.41975 2 Conclusion: The “reduced velocity” is inversely proportional to the cube root of the diameter of the pore. The entropic value arising from the effect of diameter is directly proportional to natural logarithm of the square of half of the diameter. If the diameter of the pore is equal to the dB wavelength the gas molecule may continue its motion at a root mean square velocity.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83729270","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: 2

Toxic Elements Levels in Water and Some Vegetable Crops Grown in Farms in Bade Local Government Area of Yobe State, Nigeria 尼日利亚约贝州巴德地方政府区农场种植的水和一些蔬菜作物中的有毒元素水平

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-06-18 DOI: 10.9734/AJOPACS/2018/39560

A. Oyekanmi, F. Okibe, W. Dauda

{"title":"Toxic Elements Levels in Water and Some Vegetable Crops Grown in Farms in Bade Local Government Area of Yobe State, Nigeria","authors":"A. Oyekanmi, F. Okibe, W. Dauda","doi":"10.9734/AJOPACS/2018/39560","DOIUrl":"https://doi.org/10.9734/AJOPACS/2018/39560","url":null,"abstract":"This study determined heavy metal concentrations in soil, water and some vegetables such as (Spinach (Amaranth caudatus), Lettuce (Lactuca Sativa) and Tomato (Lycopersicon esculentum)) which were freshly harvested within five various farms (Samaila Hardaway farm, Mohammed Koli farm, MainaBabi farm, Ngatau farm and Sani Chansa farm) at Jawa village in Bade Local Government Area of Yobe state, Nigeria which were digested and analyzed for heavy metals such as As, Cd, Ni, Pb, and Cr. The aforementioned heavy metal concentrations were determined using Micro Plasma Atomic Emission Spectrophotometer MP-AES model 4200 of Agilent. The result of the analysis shows that all the heavy metals were detected and exceeded the World Health Organization (WHO) permissible limit. The metals were of the sequence As > Pb > Cd > Ni > Cr in the descending order. The high level of these heavy metals, especially arsenic place the consumers of these vegetable crops grown within the study area at health risk like cancer, kidney failure with time unless an urgent step is taken by relevant agencies to address this issue. Original Research Article Oyekanmi et al.; AJOPACS, 6(2): 1-12, 2018; Article no.AJOPACS.39560 2","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84792164","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: 5

Morphological and Optical Characteristics of ZnO and F: ZnO Thin Films by a Sol-Gel Spin Coating Technique 溶胶-凝胶自旋镀膜技术制备ZnO和F: ZnO薄膜的形貌和光学特性

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-06-14 DOI: 10.9734/ajopacs/2018/42421

Y. Odedunmoye, I. Bello, O. Adedokun, M. K. Awodele, A. O. Awodugba

引用次数: 0

First-Principles Theoretical Study on Electronic Band Structure of Diamond and Graphite 金刚石和石墨电子能带结构的第一性原理理论研究

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-06-07 DOI: 10.9734/ajopacs/2018/41779

S. Abdu, M. Adamu, M. Onimisi

引用次数: 0

Riemannian Velocity and Acceleration Tensors/Vectors in Rotational Oblate Spheroidal Coordinates Based Upon the Great Metric Tensor 基于大度量张量的旋转椭球坐标系中的黎曼速度和加速度张量/矢量

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-06-07 DOI: 10.9734/ajopacs/2018/40509

J. Omonile, P. Ojih, M. Alhassan, S. Howusu

引用次数: 0

Soil Surface Treatments and Moisture Characteristics of a Luvisol under Cowpea (Vigna unguiculata) in the Transition Zone of Ghana 加纳过渡区豇豆(Vigna unguiculata)下露天菊的土壤表面处理和水分特征

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-06-01 DOI: 10.9734/ajopacs/2018/34990

Kwabena Kyere, Kofi A. Agyarko, B. Yaw, E. Asiedu

引用次数: 0

MHD Flow of Micropolar Fluid in a Porous Medium Provoked by Heat Function and Radiation 微极流体在热函数和辐射激发下多孔介质中的MHD流动

Asian Journal of Physical and Chemical Sciences Pub Date : 2018-06-01 DOI: 10.9734/AJOPACS/2018/41155

P. Nwabuzor, A. Ngiangia, E. Chukwuocha

引用次数: 2