辽河油田天然气压缩机的改造设计

对辽河油田天然气压缩机在不改变外壳和转速的情况下进行了减少流量、增加压比的改造设计 ,改造后的压缩机运行平稳、可靠 ,完全达到了性能要求     

浅谈当代陶瓷雕塑的创作语言

随着时代发展和当代艺术的影响,陶瓷雕塑创作者抛开以往的创作思想及手法的束缚,开始关注媒介自身的表现力及创作者本人的思想观念。本文从材料和烧成两方面论述了陶瓷雕塑创作语言的拓展应用,使得当代陶瓷雕塑创作具有更加强烈的个人语言和视觉符号,体现在当代陶瓷雕塑艺术在创作形式上不拘泥于传统,而是对传统陶瓷雕塑总结性的批判继承和对西方艺术文化所表现出来的吸取包容态度以及在此基础上的创新。     

浅议陶瓷花鸟画艺术风格

陶瓷花鸟画在陶瓷装饰史上有着十分重要的地位。受中国传统文化的影响,陶瓷花鸟画是在我国传统花鸟画的基础上发展起来的。但随着东西方文化的交融,以及艺术交流的不断拓展,陶瓷花鸟画在创新和风格等方面愈加丰富,艺术家逐渐把一种人格力量、文化内涵注入到花鸟画之中,托物言志,寓意社会现象、高尚品德,表达思想感情。     

"They all work...when you stick to them": A qualitative investigation of dieting,weight loss,and physical exercise,in obese individuals

Background  

To explore the extent to which people living with obesity have attempted to lose weight, their attitudes towards dieting, physical exercise and weight loss solutions, why their weight loss attempts have failed, and their opinions about what would be most beneficial to them in their struggle with their weight.     

浅谈化学实验在化学教学中的作用

化学实验以其丰富的内涵在化学教学中发挥着独特的功能和作用：a)提高学生的学习兴趣；b)培养学生的观察思维能力；c)培养学生的动手操作能力；d)培养学生解决问题的能力。     

Halloysite clay nanotubes as nano‐bazookas for drug delivery

Halloysite nanotubes are cheap, abundant in their deposits, natural green clays with cylindrical structure having a chemical composition similar to that of kaolin. Because of their lumens, high aspect length–diameter ratio and low hydroxyl density on their surface they are readily suitable for a number of interesting applications. In this review we focus only on their use as ‘nano‐bazooka’ drug carriers, able to shoot their cargo against major diseases. Their structure, controlled release and loading are described. We emphasize especially their possible use as novel drug delivery systems with applications in nanomedicine. © 2017 Society of Chemical Industry     

浅议工程硕士英语教学改革

在当前经济形势下,就业难度的增加让许多在职人员有了更多的危机意识,于是他们大部分选择在职充电的方法,在保留工作的同时提升自我能力,规避风险,因此进修不离岗的工程硕士吸引了很多在职人员报考。工程硕士研究生具有一定的特殊性,文章通过分析工程硕士英语学习特点,进一步探索更加适合其进行英语学习的方式方法,改变研究生英语教育整齐划一的教学模式,了解其学习动机,满足学习要求,让在职英语学习更加注重实效。     

Biodegradability of Plastics

Plastic is a broad name given to different polymers with high molecular weight, which can be degraded by various processes. However, considering their abundance in the environment and their specificity in attacking plastics, biodegradation of plastics by microorganisms and enzymes seems to be the most effective process. When plastics are used as substrates for microorganisms, evaluation of their biodegradability should not only be based on their chemical structure, but also on their physical properties (melting point, glass transition temperature, crystallinity, storage modulus etc.). In this review, microbial and enzymatic biodegradation of plastics and some factors that affect their biodegradability are discussed.     

Elastic Fibre Proteins in Elastogenesis and Wound Healing

As essential components of our connective tissues, elastic fibres give tissues such as major blood vessels, skin and the lungs their elasticity. Their formation is complex and co-ordinately regulated by multiple factors. In this review, we describe key players in elastogenesis: fibrillin-1, tropoelastin, latent TGFβ binding protein-4, and fibulin-4 and -5. We summarise their roles in elastogenesis, discuss the effect of their mutations on relevant diseases, and describe their interactions involved in forming the elastic fibre network. Moreover, we look into their roles in wound repair for a better understanding of their potential application in tissue regeneration.     

Oxidative stability of flax and hemp oils

Oxidative stability of flax and hemp oils, and of flax and hemp oils stripped of their minor components, was evaluated in the dark at 60°C and under fluorescent light at 27°C. Several analytical methods were used to assess the oxidative stability of oils. Oil extracts were also investigated for their scavenging of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and for their total phenolic contents. The results indicate that bioactive constituents of these edible oils play a major role in their oxidative stability. However, the FA composition of the oils and their total content of tocopherols as well as the type of pigments present contribute to their stability. Nonstripped flax and hemp oils were more stable than their corresponding stripped counterparts. Furthermore, nonstripped hemp oil had a higher oxidative stability than nonstripped flax oil as evidenced by scavenging of DPPH radical and consideration of total phenolic contents.     

关税配额制对化肥贸易的影响分析

化肥进口关税配额制度促使我国化肥进口政策透明化,促成了国内市场与国际市场的融合,使进口更为理性.该制度明确规定了年度化肥进口关税配额额度,下调了化肥进口关税税率,允许非国营企业从事进口贸易,规定了化肥进口关税配额分配操作程序等,加速了中国化肥自由贸易的进程.这种更为透明的化肥进口政策,促进了更为理性的化肥进口行为,增加了化肥贸易的可预见性,促成了国内市场与国际市场的融合,形成了基于真实的市场价格信号的进、出口格局,有助于国内化肥市场的稳定.     

千年之路——壶的造型发展与功能演变

壶是中国陶瓷文化的一个重要组成部分，不同时代的陶瓷壶具都有不同的风貌，不同时代的审美品味也影响着壶的造型。而随着时代的变迁壶的功能也不断演变，一部壶的发展史也就是一部中国陶瓷发展史的缩影。     

Monolayer-protected cluster molecules

In this report, we evaluate the present state of the rapidly emerging field of monolayer-protected cluster (MPC) molecules with regard to their synthesis and monolayer functionalization, their core and monolayer structure, their composition, and their properties. Finally, we canvass some of the important remaining research opportunities involving MPCs.     

Nutritional importance of phenolic compounds in the diet

Phenols are one of the major groups of nonessential dietary components appearing in vegetable foods. They are a wide chemical compounds group that are considered as secondary plant metabolites, with different activity and chemical structure, including more than 8,000 different compounds. Phenols, has traditionally been considered as antinutritive compounds due to the adverse effect of one of their main components, tannins, on protein digestibility. However, actually there is an increased interest in these compounds because they have been associated with the inhibition of atherosclerosis and cancer. The bioactivity of phenolics may be related to their antioxidant behaviour, which is attributed to their ability to chelate metals, inhibit lipoxygenase and scavenge free radicals. This review make a global view on the main phenolic compound groups, their organoleptic effects in vegetable foods, their physiological effects in humans, their metabolism, bioavailability as well as their content in the diet.     

Food for thought: an exploratory study of how physicians experience poor workplace nutrition

Background  

Nutrition is often a casualty of the busy work day for physicians. We aimed to explore physicians' views of their nutrition in the workplace including their perceptions of the impact of inadequate nutrition upon their personal wellness and their professional performance.     

H.p.l.c. separation and g.c. characterization of polynuclear aromatic fractions of bitumen,heavy oils and their synthetic crude products

Characterization of bitumen, heavy oils, crude oil distillation residues and their processed products involves separation of the mixtures into several compound classes according to their molecular structure. However, these fractions are still very complex and often need further separation in order to get a better insight into their composition as well as the processing reactions involved in their upgrading. In this paper, the polynuclear aromatic fraction is divided into three subfractions by high performance liquid chromatography. Gas chromatography is then used to quantify these fractions and to determine their average molecular weight by a new method derived from simulated distillation. Crude oil distillation residues and their hydrocracked products are used to demonstrate this method.     

除草剂混用、混剂及其药效评价

详细叙述了除草剂的混用、混剂及其目的的意义，混用后的联合作用方式及科学的评价方法。     

高支化聚苯乙烯的合成与表征

采用原子转移自由基方法合成了3种高支化聚苯乙烯HBPS-1、HBPS-2和HBPS-3,应用红外光谱法、核磁共振法、凝胶渗透色谱法、示差扫描量热法和热失重法进行了表征和测试。研究结果表明:按照HBPS-1、HBPS-2、HBPS-3的顺序,支化程度增加,分子量增加,分子量分布变宽;玻璃化转变温度降低;分解温度降低,半分解温度差别不大。     

广东省涂料工业发展现状

广东省的涂料企业多种体制并存 ,国有涂料企业主要集中在广州、佛山等城市 ,民营涂料企业主要分布在顺德一带 ,全省年产涂料 60万吨 ,居全国之首。广东涂料工业要保持持续发展的势头 ,必须做大规模 ,调整结构 ,树立品牌 ,拓展市场。