Advances in Natural Science最新文献

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Ramadan and Type 2 Diabetes in Bangladesh 孟加拉国的斋月和2型糖尿病
Advances in Natural Science Pub Date : 2015-06-26 DOI: 10.3968/6621
S. Hossain, K. Ahmed, F. Saleh, L. Ali
{"title":"Ramadan and Type 2 Diabetes in Bangladesh","authors":"S. Hossain, K. Ahmed, F. Saleh, L. Ali","doi":"10.3968/6621","DOIUrl":"https://doi.org/10.3968/6621","url":null,"abstract":"Ramadan is the Holy month of the Muslims when they are required to fast from dawn to sunset. The present study was aimed at exploring the effects of fasting in the Ramadan on body mass index (BMI), waist circumference (WC), total cholesterol, triglyceride (TG), creatinine, and acute complications in patients with type 2 diabetes in Bangladesh. This prospective study was carried out among 92 types 2 diabetes patients (age 47±9 years, mean±SD), selected randomly from a tertiary-care hospital of the Diabetic Association of Bangladesh (BADAS). Significant changes were observed in the pulse rate (p=.001) and BMI (p=.001) in type 2 diabetes during Ramadan. Fasting blood glucose (p=.001), fructosamine (p=.001), TC (p=.003), HDL-C (p=.004), TG (p=.04), and creatinine (p=.01) were significantly higher in all the patients during fasting. Fasting during Ramadan is associated with a deterioration of metabolic control in diabetic patients. However, fasting did not cause any irreversible damage to renal function; so, fasting is safe for type 2 diabetes in Bangladesh during Ramadan.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76895273","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: 1
A Mini Review on Controlling the Size of Ag Nanoclusters by Changing the Stabilizer to Ag Ratio and by Changing DNA Sequence 通过改变稳定剂与银的比例和改变DNA序列来控制银纳米团簇大小的综述
Advances in Natural Science Pub Date : 2015-06-26 DOI: 10.3968/7242
Hua Deng, Hongtao Yu
{"title":"A Mini Review on Controlling the Size of Ag Nanoclusters by Changing the Stabilizer to Ag Ratio and by Changing DNA Sequence","authors":"Hua Deng, Hongtao Yu","doi":"10.3968/7242","DOIUrl":"https://doi.org/10.3968/7242","url":null,"abstract":"Ag nanoclusters have received considerable attention in the past decade due to their distinguished photo-physical properties, which lead to very wide potential applications for biosensing and imaging. To this point, synthesis of well-defined Ag nanoclusters for practical applications is a key issue, in particular, controlling the size (or specific number of silver atoms) of Ag nanoclusters. Herein, we briefly discuss the effect of ratio of reactants, in terms of specific functional groups, on the size of Ag nanoclusters. Also, taking DNA as an example of biopolymer, we review how the DNA sequence can affect the specific number of Ag atoms in Ag nanoclusters. These conducted principles should provide significant guidance for preparation of Ag nanoclusters of precise size.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81418329","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: 11
Pin on Disc Wear volume Prediction Based on Grey System Theory 基于灰色系统理论的销盘磨损量预测
Advances in Natural Science Pub Date : 2015-06-26 DOI: 10.3968/7083
Z. Xingyu, Xiaoyi Jin, Tian Peipei, Zhou Zhengzhu, Yuyi Lin
{"title":"Pin on Disc Wear volume Prediction Based on Grey System Theory","authors":"Z. Xingyu, Xiaoyi Jin, Tian Peipei, Zhou Zhengzhu, Yuyi Lin","doi":"10.3968/7083","DOIUrl":"https://doi.org/10.3968/7083","url":null,"abstract":"This paper is a study of pin on disc wear volume, with the MMW-1A vertical friction and wear testing machine as the testing equipment, under different lubrication conditions. In this paper, the pin wear volume GM(1,1) prediction model is built based on the grey system theory, GM(1,1) the model consists of a single variable in the first-order differential equation. The pin wear volume measured compare with GM(1,1) predicted wear volume, The comparison results showed that, the predicted values by the GM(1,1) are very close to the experiment measured values, and the precision of predicted results is quite high.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72738305","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
Construction of a Cylindrical Cam Model With Clearance for Wear Study 带间隙圆柱凸轮模型的构建及其磨损研究
Advances in Natural Science Pub Date : 2015-06-26 DOI: 10.3968/6966
Zhou Zhengzhu, Xiaoyi Jin, Z. Xingyu, Yuyi Lin
{"title":"Construction of a Cylindrical Cam Model With Clearance for Wear Study","authors":"Zhou Zhengzhu, Xiaoyi Jin, Z. Xingyu, Yuyi Lin","doi":"10.3968/6966","DOIUrl":"https://doi.org/10.3968/6966","url":null,"abstract":"Using Solidworks and MATLAB as solid modeling and computation tool, a cylindrical cam model with clearance is developed in this paper. The purpose of such a model is for future study of wear, such as wear pattern and wear rate. The model is based on the reported Achard wear model. It is hoped that the model not only can predict the wear rate and depth of wear, but also serve as a tool to cylindrical cam design, for less wear and longer useful life. Wear depth prediction model established in this paper shows that the wear depth will increase, if the cam rotational speed increases.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78238597","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: 1
Investigation on Fitting Method of Snail Structural Lines 螺结构线拟合方法研究
Advances in Natural Science Pub Date : 2015-03-26 DOI: 10.3968/6128
Wenxian Tang, Wen-le Wu, Ze Gao, Jintai Li, Shu-yan Wang
{"title":"Investigation on Fitting Method of Snail Structural Lines","authors":"Wenxian Tang, Wen-le Wu, Ze Gao, Jintai Li, Shu-yan Wang","doi":"10.3968/6128","DOIUrl":"https://doi.org/10.3968/6128","url":null,"abstract":"For the current status of the spudcan design and combining the characteristics of bionics, on the basis of shells on the solid model, the paper study the spiral geometry characteristics and distribution. Regarding the shape of the surface characteristics of the spiral portion and snail shells spiral suture lines, a feature reverse scan statistics can be made. Snail shells overall shape evaluation can be established and micro-element methods are used to deduce the 2D mathematical expression so as to provide a good reference for the design of jack-up platform spudcan.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74942518","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
The Optimal Design of a Drum Friction Plate Using AnsysWorkbench 基于AnsysWorkbench的滚筒摩擦片优化设计
Advances in Natural Science Pub Date : 2015-03-26 DOI: 10.3968/6438
Xiaoyi Jin, X. Zhang, Zhou Zhengzhu, Z. Yuan, Yuyi Lin
{"title":"The Optimal Design of a Drum Friction Plate Using AnsysWorkbench","authors":"Xiaoyi Jin, X. Zhang, Zhou Zhengzhu, Z. Yuan, Yuyi Lin","doi":"10.3968/6438","DOIUrl":"https://doi.org/10.3968/6438","url":null,"abstract":"In this paper Solid Works is used to establish the geometric model of drum brake. The solid model is imported into AnsysWorkbench, and analyzed for the friction plate stress distribution under different conditions. The results show that when the friction plate material is less metal, the thickness is between 3 mm and 5 mm, the starting angle is between 25 degrees and 27 degrees, the concentration degree of contact stress reduces and the volatility is relatively stable.  This can provide good braking performance and increase the service life.  The optimization parameters can provide data support for the development of new drum brake.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73742914","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
Research on Tailoring Technology of Array CCD Aerial Camera Linux System 阵列CCD航空相机Linux系统裁剪技术研究
Advances in Natural Science Pub Date : 2015-03-26 DOI: 10.3968/6226
Weiguo Cao, Haini Yang, Y. Duan, Pei-pei Wen, Yuegang Fu
{"title":"Research on Tailoring Technology of Array CCD Aerial Camera Linux System","authors":"Weiguo Cao, Haini Yang, Y. Duan, Pei-pei Wen, Yuegang Fu","doi":"10.3968/6226","DOIUrl":"https://doi.org/10.3968/6226","url":null,"abstract":"In view of the actual demand of operating system of the air plane array CCD camera, and combining with the hardware resources of the PC104 bus structure, Linux system adopted in CCD camera is cut practically, which based on the tailoring method adopting the combination of coarse-grained and fine-grained to enhance the Linux kernel preemption, improve the scheduling strategy of Linux kernel scheduler, to build a embedded system with the strong implementation capacity. The system startup and task of the response performance test in different environment shows that the cut systems is stable, reliable, and can achieve the startup time less than 5s, the performance of the task response time less than 20 millisecond.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75617964","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
Phialophora Melinii (NFCCI 3617): A Newly Isolated Psychrotolerant Fungus That Produces Enhanced Laccase Under the Influence of Organic Solvents Melinii (NFCCI 3617):一种在有机溶剂影响下产生增强漆酶的新分离的耐寒真菌
Advances in Natural Science Pub Date : 2015-03-26 DOI: 10.3968/6477
Kusum Dhakar, P. Anita
{"title":"Phialophora Melinii (NFCCI 3617): A Newly Isolated Psychrotolerant Fungus That Produces Enhanced Laccase Under the Influence of Organic Solvents","authors":"Kusum Dhakar, P. Anita","doi":"10.3968/6477","DOIUrl":"https://doi.org/10.3968/6477","url":null,"abstract":"A psychrotolerant fungus, isolated from decomposing pine needle debris, is investigated for laccase production under the influence of 5 organic solvents. The fungus was identified as Phialophora melinii and was able to grow between 4 to 35 °C (opt. 25 °C) and 2-14 pH (opt. 5-7). In quantitative estimations that were carried out at optimum growth temperature and pH, the fungal laccase was estimated to be 21.0 ± 4.0 U/L. Native PAGE study revealed 35 kDa molecular mass of the fungal laccase. Supplementation of organic solvents namely, methanol, ethanol, acetone, n-propanol and iso-propanol in varying concentrations (0.5%-2.0%, separately), significantly affected the production of fungal laccase. Out of 5 solvents used, n-propanol was found to be the most efficient enhancer of laccase production. n-Propanol (0.5%) resulted in maximum enhancement (7 folds) in laccase production at 18th day of incubation. Methanol, iso-propanol and ethanol were able to enhance laccase production up to 5-6 folds in comparison to control with respect to the varying concentration and incubation length. Age of the fungal culture (incubation days) was observed as an important factor for laccase production. Use of low molecular compounds in enhancing the fungal laccase production may be considered as an eco-friendly approach.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82360318","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
Environmental Impacts of Ship Breaking and Recycling Industry of Sitakunda, Chittagong, Bangladesh 孟加拉吉大港Sitakunda拆船及回收业对环境的影响
Advances in Natural Science Pub Date : 2015-03-26 DOI: 10.3968/6492
A. Fakhruddin, M. Talukdar, M. Hossain
{"title":"Environmental Impacts of Ship Breaking and Recycling Industry of Sitakunda, Chittagong, Bangladesh","authors":"A. Fakhruddin, M. Talukdar, M. Hossain","doi":"10.3968/6492","DOIUrl":"https://doi.org/10.3968/6492","url":null,"abstract":"Ship dismantling of Bangladesh is a reason of concern due to its economic values and environmental hazards. This study focuses on the Ship Breaking and Recycling Industry (SBRI) of Bangladesh to assess the environmental impacts. It was done by analyzing the water quality parameters like, Turbidity, Salinity, Electric conductivity (EC), Dissolved Oxygen (DO), pH, Total Dissolved Solids (TDS), Temperature, Ammonia-Nitrogen, Nitrate–Nitrogen, Phosphate concentrations of inside and surroundings of Ship Breaking Yard. Turbidity ranged from 7.71 to 119 FTU in and 4.07 to 41.74 FTU in inside and outside the ship breaking yard, respectively. Salinity ranged from 0.95 to 14.28 ppt and 0.06 to 0.79 ppt in insde and outside, respectively. Value of EC varied from1.75 to 1280 µs/cm in inside and 0.21 to 15.7 µs/cm in outside, DO ranged from 3.77 to 7.94 mg/l in inside and 1.95 to 5.34 mg/l in outside. TDS value ranged from1280 to 15340 mg/l in inside and 74 to 825 mg/l in outside of ship breaking yard. Ammonia-N value ranged from 0.46 to 7.046 mg/l, Nitrate-N value ranged from 0.10 to 6.9 mg/l and Phosphate value ranged from 0.175 to 4.75 mg/l in the analyzed water sample. Magnitude of environmental alteration by establishment of ship breaking industry was assessed by quantifying Environmental impact value of Study area and the value was found as -93, where ecological parameters value was found -72, Physico-chemical parameters value was -70 and human interest value was found +49 which indicate negative alteration on environment.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85058706","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: 8
Weight Determination of Static and Dynamic Influencing Factors of the Change of Waterflooding Oil Well Based on Grey Relational Analysis and Analytic Hierarchy Process 基于灰色关联分析和层次分析法的水驱油井变化静、动态影响因素权重确定
Advances in Natural Science Pub Date : 2015-03-26 DOI: 10.3968/6706
Hua Wen, Yikun Liu, Naidong Sun, Jiyuan Lu, Junfeng Wu
{"title":"Weight Determination of Static and Dynamic Influencing Factors of the Change of Waterflooding Oil Well Based on Grey Relational Analysis and Analytic Hierarchy Process","authors":"Hua Wen, Yikun Liu, Naidong Sun, Jiyuan Lu, Junfeng Wu","doi":"10.3968/6706","DOIUrl":"https://doi.org/10.3968/6706","url":null,"abstract":"LaSaXing oilfield has entered into the extra high water cut development stage, when analysising dynamic the static factors, production factors and dynamic factors that influence oil well change are more,  only depended on the qualitative analysis, it is difficult to accurately judge the cause of oil well change, can not meet the urgent need of oilfield development. This paper selects the static and dynamic factors affect the oil well change, the weight of static and dynamic influencing factors of the change of waterflooding wells are determined using the grey correlation analysis and the analytic hierarchy process based on exponential scale. The practices show that the weight of static and dynamic factors of the oil well change that determined using this method is scientific and reasonable, accord with the actual of oilfield, and provide reliable basis for intelligent analysis of dynamic change of oil well.","PeriodicalId":7348,"journal":{"name":"Advances in Natural Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84456699","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: 1
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