Comparison of lipid profile and antioxidant enzymes among south Indian men consuming coconut oil and sunflower oil

In this study, we compared the lipid profile and antioxidant enzymes of normal and diabetic subjects consuming two different types of oil as cooking medium. 70 normal, healthy subjects were taken as controls and 70 subjects with Type 2 diabetes were recruited in patient group. Each group was further subdivided into two subgroups of 35 subjects each, consuming coconut oil and sunflower oil respectively as cooking medium. Samples of blood were collected and analyzed for serum total cholesterol, triacylglycerols, and cholesterol in lipoprotein fractions. Total glutathione and glutathione peroxidase were measured in erythrocytes and superoxide dismutase in serum. Triacylglycerols, LDL and VLDL cholesterol levels were high in the diabetic subjects compared to the controls. Total glutathione and glutathione peroxidase values showed significant decrease in diabetic subjects as compared to the controls, while superoxide dismutase values showed significant difference between coconut oil consuming groups. Though lipid profile parameters and oxidative stress were high in Type 2 diabetic subjects compared to controls, no pronounced changes for these parameters were observed between the subgroups (coconut oil vs. sunflower oil).     

The synthesis of the ethyl esters of some 2-oxo- and 2-thio-1,2,3,4-tetrahydro-5-pyrimidinecarboxylic acids

Some ethyl 2-oxo-4-R-6-methyl-1,2,3,4-tetrahydro-5-pyrimidinecarboxylates and several of the corresponding 2-thio-compounds were prepared by a modified Biginelli condensation.     

基于TRIZ的TG80型压棒机给排油装置的研究与设计

TG80型压棒机是国内多数烟厂采用的主流除尘设备之一,采用液压系统控制原理。其中给排油系统效率低直接影响到压棒机的生产效率。文章以TRIZ为理论为指导方法,描述了机械设计中的矛盾问题,并建立解决矛盾矩阵,分析了"生产效率"、"可靠性"、"运动物体的形状"之间的矛盾关系,最终运用TRIZ的创新原理找到创新最优解。在满足生产及保证可靠性的同时,减少了给排油次数及单次耗时,提高生产效率。     

The challenge of commercial document retrieval,Part I: Major issues,and a framework based on search exhaustivity,determinacy of representation and document collection size

With the growing focus on what is collectively known as “knowledge management”, a shift continues to take place in commercial information system development: a shift away from the well-understood data retrieval/database model, to the more complex and challenging development of commercial document/information retrieval models. While document retrieval has had a long and rich legacy of research, its impact on commercial applications has been modest. At the enterprise level most large organizations have little understanding of, or commitment to, high quality document access and management. Part of the reason for this is that we still do not have a good framework for understanding the major factors which affect the performance of large-scale corporate document retrieval systems. The thesis of this discussion is that document retrieval—specifically, access to intellectual content—is a complex process which is most strongly influenced by three factors: the size of the document collection; the type of search (exhaustive, existence or sample); and, the determinacy of document representation. Collectively, these factors can be used to provide a useful framework for, or taxonomy of, document retrieval, and highlight some of the fundamental issues facing the design and development of commercial document retrieval systems. This is the first of a series of three articles. Part II (D.C. Blair, The challenge of commercial document retrieval. Part II. A strategy for document searching based on identifiable document partitions, Information Processing and Management, 2001b, this issue) will discuss the implications of this framework for search strategy, and Part III (D.C. Blair, Some thoughts on the reported results of Text REtrieval Conference (TREC), Information Processing and Management, 2002, forthcoming) will consider the importance of the TREC results for our understanding of operating information retrieval systems.     

基于S3C6410的嵌入式加密网关设计与实现

随着科技的迅猛发展,智能便捷的电子设备越来越受人们欢迎,其中离不开网络技术和嵌入式系统的应用。网关作为网络的核心组成部分,能够实现终端设备的互联以及不同网络之间的通信。文章利用ARM嵌入式处理器作为硬件平台核心,以嵌入式Linux操作系统作为软件平台,使用AES加密算法提高信息的安全性和保密性,建立网关系统的开发平台,设计了一种嵌入式网关接入以太网。     

Single cell oil production by a novel yeast Trichosporon mycotoxinivorans for complete and ecofriendly valorization of paddy straw

BackgroundOleaginous yeasts can be grown on different carbon sources, including lignocellulosic hydrolysate containing a mixture of glucose and xylose. However, not all yeast strains can utilize both the sugars for lipogenesis. Therefore, in this study, efforts were made to isolate dual sugar-utilizing oleaginous yeasts from different sources.ResultsA total of eleven isolates were obtained, which were screened for their ability to utilize various carbohydrates for lipogenesis. One promising yeast isolate Trichosporon mycotoxinivorans S2 was selected based on its capability to use a mixture of glucose and xylose and produce 44.86 ± 4.03% lipids, as well as its tolerance to fermentation inhibitors. In order to identify an inexpensive source of sugars, nondetoxified paddy straw hydrolysate (saccharified with cellulase), supplemented with 0.05% yeast extract, 0.18% peptone, and 0.04% MgSO₄ was used for growth of the yeast, resulting in a yield of 5.17 g L⁻¹ lipids with conversion productivity of 0.06 g L⁻¹ h⁻¹. Optimization of the levels of yeast extract, peptone, and MgSO₄ for maximizing lipid production using Box–Behnken design led to an increase in lipid yield by 41.59%. FAME analysis of single cell oil revealed oleic acid (30.84%), palmitic acid (18.28%), and stearic acid (17.64%) as the major fatty acids.ConclusionThe fatty acid profile illustrates the potential of T. mycotoxinivorans S2 to produce single cell oil as a feedstock for biodiesel. Therefore, the present study also indicated the potential of selected yeast to develop a zero-waste process for the complete valorization of paddy straw hydrolysate without detoxification.How to cite: Sagia S, Sharma A, Singh S, et al. Single cell oil production by a novel yeast Trichosporon mycotoxinivorans for complete and ecofriendly valorization of paddy straw. Electronic Journal of Biotechnology 2020;44. https://doi.org/10.1016/j.ejbt.2020.01.009.     

共同委托仓单质押下银行对3PL的激励和监督

摘要：第三方物流 (Third Party Logistics,3PL)努力工作是仓单质押业务有效开展和保证银行贷款安全的重要因素,针对质押物对其生产经营有重大影响的融资企业,运用委托代理理论,研究融资企业参与下银行对3PL的激励问题,并考虑在激励基础上进行监督时的均衡结果。研究发现,在有融资企业参与激励情况下,3PL的努力水平不变,但银行的固定支付和激励系数减小;银行和融资企业在激励基础上进行监督会提高3PL的努力水平。研究还揭示,对某些较差质押物（价格波动较大、质地不稳定、变现差等）银行也可放贷,其收益可能高于较好质押物的收益,该结论对提高银行开展仓单质押业务的积极性具有现实意义。     

基于BIM的3D打印技术在建筑行业的应用研究

生产资源利用高效,环境污染少,质量可靠的建筑是未来建筑行业的发展趋势。根据BIM技术和3D技术的应用特点,针对我国建筑行业存在的问题,提出BIM-3D技术模式,分析BIM-3D技术的理论基础和关键技术;阐述该技术模式的应用平台并进行详细说明;最后对BIM-3D技术进行优劣势分析,为我国建筑行业的快速发展提供指导。     

浅谈互联网与手机硬件推动3G时代智能手机的发展

通过对当下智能手机操作系统特性以及智能手机和3G网络对互联网发展到推动出发,本文对互联网与手机硬件推动3G时代的智能手机的发展进行了阐述。     

基于金融生态的科技成长型企业自主创新的R-W模型

以复杂系统理论分析自主创新的生态环境,探讨科技成长型企业自主创新的Rotating-W heel模型,提出要基于和谐的金融生态系统,以紧密相扣、均匀有机、层递螺旋式上升的金融服务生态链,针对自主创新的周期性需求与瓶颈,匹配恰当有效的金融支持。     

基于S3C44BOX和μc/os-Ⅱ的捣固车拨道模拟控制数字化改造

本文主要介绍应用Samsung的S3C44BOX嵌入式芯片构建硬件平台,内嵌实时多任务操作系统μc/os-Ⅱ,对捣固车拨道的模拟控制进行数字化改造。按照控制要求简要介绍了硬件软件设计,包括S3C44BOX芯片的特点和μc/os-Ⅱ的移植等。     

中热固相法Li1+xV3O8-yFy正极材料的制备及性能

以Li2CO3和V2O5为原料,用中热固相法制备了掺杂不同氟离子含量的锂离子电池正极材料Li1+xV3O8-yFy,采用XRD衍射对其结构进行表征,并通过充放电测试、循环伏安及电导率测试对其性能进行了研究.测试结果表明,中热固相法制得的Li1+xV3O8-yFy产品较纯,没有杂质相存在;当y=0.1时产品的电化学循环性能最好,首次放电比容量达252.08 mAh/g,以0.2c倍率循环25次之后比容量仍保持在210.93 mAh/g,容量保持率达92.72％.     

基于加权灰色关联度模型的各地区国有及规模以上非国有工业企业经济效益评价方法

应用加权灰色关联度模型，较好地克服了信息的不完全性和不确定性，揭示了样本指标间的关系，为评价各地区国有及规模以上非国有工业企业经济效益，提供了一种现实可行的方法。     

基于农业环保型技术的农户生计资产评估及差异性分析——以湖北武汉、随州农业废弃物循环利用技术为例

当前农业生产面临新挑战与新机遇,农户人力、自然、物质、金融、社会与心理资产也随之变化。鉴于此,本文以改进的DFID可持续生计分析框架为理论依据,选取23个农户生计资产指标,采用主观实地调研修正权重与客观熵值法确权相结合的方法,对湖北省农户的六维生计资产进行了量化评估及差异性分析。研究发现:①农户生计总资产差异性显著,极差高达5.06倍;农户分维资产分布不均,且差异明显;②纯农户、一兼农户、二兼农户与非农户生计总资产分布不均,且极差较大,但兼业农户的生计总资产高于纯农户;③不同类型农户的分维生计资产优劣不同,人力、社会与心理资产方面,一兼农户与非农户占优;物质资产方面,纯农户与二兼农户具有明显优势;金融资产方面,非农户与二兼农户占优;自然资产方面,一兼农户与纯农户具有明显优势;④不同类型农户的分维心理资产存在明显差异,一兼农户与纯农户的自信指数较高,非农户与一兼农户幸福感指数略高,纯农户与一兼农户能较为直观且客观的对环境感知给出评价,且评价值相近,纯农户与非农户的韧性指数较高,兼业化农户与非农户容易受到风险因素的影响。