琉璃苣油在化妆品中的应用

琉璃苣油(BorageOil)内所含r-亚麻酸能减轻皮肤粗糙与全表皮水分散失并增加中性与受刺激的人皮肤上的温度半个多世纪以来，研究者们都在论述多不饱和脂肪酸的补充对治疗表皮皮炎的功用．夜来香籽的油引起特别关注就是因为其内含有肝亚麻酸。wr。rse等发现口服这种油能明显减轻表皮皮炎的一般严重症状。表皮皮炎患者血液中类脂物的脂肪酸情状是依亚油酸比例而呈增加势态，同时花生四烯酸与亚油酸的其他代谢物呈减少态势。这些发现暗示尽6一去饱和酶在表皮皮炎中的不完全功能。在以前的通报中，我们报告过系统地服用夜来香油能使皮肤变光滑。…     

分子蒸馏提纯α-亚麻酸的研究

本文应用刮膜式分子蒸馏装置对α—亚麻酸的提纯进行了研究。考察了蒸馏温度、系统压力、进料速率、进料温度、刮膜器转速等操作因素对α—亚麻酸产品纯度与收率的影响。得出了刮膜式分子蒸馏技术提纯α—亚麻酸的工艺条件。试验采用多级操作方式,蒸馏温度90℃～105℃;操作压力0．3Pa～1．8Pa;进料温度60℃;进料速率90mL/h～100mL/h;刮膜器转速150r／min。经过四级分子蒸馏,可以将原料中的α—亚麻酸由原来的67．5％提纯至82．3％。     

r-氯丙基甲基二甲氧基硅烷的合成及应用

综述了r-氯丙基甲基二甲氧基硅烷的合成方法，对各种工艺路线进行了评述，简要介绍了r-氯丙基甲基二甲氧基硅烷的应用。     

气相色谱法测定γ-亚麻酸和二高γ-亚麻酸含量

建立了γ-亚麻酸和二高γ-亚麻酸含量测定的气相色谱面积归一化方法。γ-亚麻酸和二高γ-亚麻酸在样品处理和色谱条件上是完全一致的，仅是出峰时间上有差别，经精密度、重现性、回收率实验，γ-亚麻酸RSD分别为1．51％、1.89％和0．98％，二高γ-亚麻酸RSD分别为1．45％、1．15％和0．81％。相关性分析γ-值均达到极显著水平。用面积归一化法进行γ-亚麻酸和二高γ-亚麻酸含量测定能够达到简便、准确、快速、误差小的目的。     

黑豆果油的组成,精制及应用

本文叙述了黑豆果油的组成特点，生理功能和精制方法，强调果出了α－亚麻酸和Ｔ－亚麻酸共存时在医疗保健方面的重要性。     

花椒籽油提取α-亚麻酸迈向产业化

陕西韩城光大生物科技有限责任公司从花椒籽油中提取高纯度α-亚麻酸的技术获重大突破。经权威机构检测认定，其α-亚麻酸提取的含量达98％，提纯工艺和技术达到了国际领先水平。韩城市拥有全国最大的花椒生产基地。凭借此资源优势，韩城光大生物科技有限公司于2005年开始与第四军医大学生物研究所合作，共同展开从花椒籽仁油中提取α-亚麻酸的科技攻关。     

二季戊四醇在二季戊四醇-水系统中的溶解性和过饱和的研究

二季戊四醇化学名称为二[r-羟基-r，r-两个(羟甲基)]丙酯，是一种用于生产油漆等化工产品的新型原料，很有发展前景。二季戊四醇的合成可通过丙烯醛与甲醛在碱水介质中反应的方法。合成一季戊四醇时也会副产大量的二季戊四醇。无论哪种途径，二季戊四醇制取的最终阶段都是从水溶液中结晶。     

决明子中不饱和脂肪酸高效液相色谱重叠峰的解析

利用HPLC-ESI/MS技术及提取离子色谱(EIC)数据处理分析方法,在正离子模式下,决明子脂溶性成分中的不饱和脂肪酸以阳离子加合物[M+solvent+H]+或自身叠加的形式被检出。研究表明该法对未能完全分离的重叠峰进行解析,发现了重叠峰中含有亚麻酸的结构信息,得到了比较满意的结果。     

失重秤水泥配料控制系统的选型

M90S失重秤配料控制系统自1990年推出以来,以精度高、节电、不死机、不失控等特点,以较快的速度得到普及。M90S失重秤已成为水泥、建材行业自动配料的重要生产设备。现在,山东、江苏、河北等省市用较多,陕西省只有很少部份企业在使用或准备使用。M90S、M190S、M990S已形成系列,本文以某计算机应用研究所生产的系列失重秤中的M90S(国家建材局优选配料设备)为例,对其原理、特点等作如下介绍,以便选型。     

尿素包合法提纯亚麻籽油中α-亚麻酸工艺的优化研究

本文以亚麻籽油为原料油,α-亚麻酸为提取目标产物,采用单因素法研究了不同尿素溶液与脂肪酸体积比、包合温度、包合时间以及尿素-乙醇溶液浓度等对α-亚麻酸提取率的影响,优化了α-亚麻酸的提取工艺。实验结果表明,当脂肪酸与尿素溶液体积比为1∶45、尿素-乙醇溶液浓度为1mol·L^-1、包合温度为-15℃、包合时间为24h时,α-亚麻酸提取率可达81%。并通过液相色谱对提纯的α-亚麻酸进行表征,α-亚麻酸在12.5min出峰,符合α-亚麻酸的出峰位置。     

季铵盐型改性淀粉辅助蒸汽相法合成多级孔EU-1沸石及其催化性能

以季铵盐型改性淀粉为介孔模板,采用蒸汽相法成功合成多级孔EU-1沸石。通过XRD,FT-IR,SEM,N_2吸附-脱附和NH_3-TPD等手段对合成样品的物化性质进行表征。研究表明:通过调节季铵盐型改性淀粉的量,样品的介孔孔容增加了0.081 cm~3/g,外表面积增加了23.35 cm~2/g。通过二甲苯异构化测试来考察样品的催化性能,发现:对二甲苯(PX)平衡浓度提高了0.88个百分点,乙苯的转化率提高了8.47个百分点,C_8烃收率提高了1.66个百分点。     

Two-stage model of nanocones formation on a surface of elementary semiconductors by laser radiation

ABSTRACT: In this work we study mechanism of nanocone formation on a surface of elementary semiconductors by Nd:YAG laser radiation. Our previous investigations of SiGe and CdZnTe solid solutions have shown that nanocone formation mechanism is characterised by two stages. The first stage is characterized by formation of heterostructure. For example, Ge/Si heterostructure from SiGe solid solutions, and the second stage is characterized by formation of nanocones by mechanical plastic deformation of the compressed Ge layer on Si due to mismatch of Si and Ge crystalline lattice. The mechanism of nanocone formation for elementary semiconductors is not clear until now. Therefore, the main goal of our investigations is to study the stages of nanocone formation in elementary semiconductors. A new mechanism of p-n junction formation by laser radiation in the elementary semiconductor as a first stage of nanocones formation is proposed. We explain this effect by following way: p-n junction is formed by generation and redistribution of intrinsic point defects in temperature gradient field - the Thermogradient effect, which is caused by strongly absorbed laser radiation. According to the Thermogradient effect, interstitial atoms drift towards the irradiated surface, but vacancies drift to the opposite direction - in the bulk of semiconductor. Since interstitials in Ge crystal are of n-type and vacancies are known to be of p-type, a n-p junction is formed. The mechanism is confirmed by appearance of diode-like current-voltage characteristics after i-Ge irradiation crystal by laser radiation. In Si mechanism is confirmed by conductivity type inversion and increase microhardness of Si crystal. The second stage of nanocone formation is laser heating up of top layer enriched by interstitial atoms with its further plastic deformation due to compressive stress caused by interstitials in the top layer and vacancies in the buried layer.     

THE RELATION OF STRUCTURE AND COMPOSITION TO THERMAL EFFICIENCY OF REFRACTORIES WHEN USED IN REGENERATORS1

This study shows the relative rates of heat transmission in typical clay, silica, diaspore, fused alumina and silicon carbide refractories, when used as checker brick. It is shown that by lowering the porosity of checker brick an increase in efficiency is obtained by virtue of its greater heat capacity, which is a function of the weight and specific heat of the material. The glazing of a clay brick does not appreciably impair its efficiency in regeneration, as is sometimes thought, as shown by experiment and as explained by the fact that the greatest part of the heat leaves the surface of the brick by convection and this is affected only by the surface area, which is not appreciably changed by glazing.     

水蒸汽法与CO2循环活气法蒸馏松脂的比较

从能量消耗、过程装备、产品质量以及排放三废方面,进行水蒸汽法与CO2循环活气法蒸馏松脂的比较,结果表明CO2循环活气法比水蒸汽法节省能量。CO2循环活气法蒸馏松脂不需要油水分离器、盐滤器,又因为不需要带走活气的冷凝热,冷凝冷却器的换热面积也减少,也不需要建造大型过热水蒸汽锅炉;CO2循环活气法蒸馏松脂所得的产品不含水份,松香无结晶现象,松节油透明无混浊;而且该法蒸馏松脂无三废产生,是一种清洁的生产方法。     

Verarbeitung von PVC auf kalandern. Formgebung im walzenspalt

Shaping in the nip of the calender is characterized by the presence of a spindle-shaped bead of superfluous melt, i.e. bank, front of the nip. The melt transported to the nip by the drag set up by the rolls is then subjected to partial change in flow. The rerouted melt flows into the bank and is replaced by melt transported from the bank into the nip. The currents at the interior of the bank are also governed by its outer movement, a rotating movement, which is superimposed by a spiral undulation, and this decisively affects the quality of the film. The bank is formed by the melt which is severely sheared in the nip and high temperatures are correspondingly displayed. The length of time the melt remains in the bank is thus decisive for thermal loading during calendering. With the Luvitherm process, in which no true melt is present in the calender sheared material is collected in the nip in flake form before the nip and is again drawn through the nip in irregular sequence. Here also, calendering is governed by the flow conditions at the entrance to the nip.     

通过细乳液聚合方法制备自交联型有机硅乳液

苯乙烯与甲基丙烯酸-3-三甲氧基硅丙酯(M PS)经细乳液聚合,制得了稳定的自交联型的水分散涂料,用透射电子显微镜(TEM)、动态光散射仪(DLS)和红外光谱(IR)表征了乳胶粒的形态和结构。发现与传统乳液聚合相比,细乳液聚合法可显著提高乳液的稳定性,且M PS加入量的增加会导致乳液稳定性降低。     

用Na2SO4提高牛眼透明质酸回收率的研究

通过 Ｎａ Ｃｌ和 Ｎ ａ２ Ｓ Ｏ ４ 溶解牛眼透明 质酸粗制品对透明质酸（ Ｈ Ａ ）提取率及纯度影响的比较研究,发现 Ｎ ａ２ Ｓ Ｏ ４ 比 Ｎ ａ Ｃｌ 对 Ｈ Ａ 提取率提高 ５ 倍以上,实验品的纯度达到 ９９３％ 。     

Reconstruction of the flotation and filtration department in the coal-enrichment shop at OAO ZSMK

It is established that, at OAO ZSMK, the moisture content in the flotational concentrate is reduced by 4.5% when dehydrating the cake using Andritz vacuum filters rather than Ukraina-80 filters. The content of solid matter in the filtrate is reduced by a factor of four. Extraction of large-grain slurry from the supply to the vacuum filters is more complete, with corresponding reduction in the content of >0.5 mm classes (by 4.1%) and 0.06–0.50 mm classes (by 1.8%) in the filtrate. The loss of final product with the filtrates is reduced by 0.3%; the total power consumption of the vacuum-pump drives is reduced by 826 kW.     

PVC-U/蒙脱土纳米复合管材的研制

以蒙脱土为主要原料，通过适宜的有机物插层剂对其改性研制了有机蒙脱土。利用聚氯乙烯(PVC)的亲油性，运用插层技术将PVC熔体插入有机蒙脱土层间，使蒙脱土片层剥离并以纳米尺寸分散在PVC相中。用上述技术研制了PVC—U／蒙脱土纳米复合管材，管材的性能达到国标规定的指标。采用红外光谱对蒙脱土结构进行了表征，用热重分析仪考察了复合材料的热性能。     

微波辐射木质素磺酸盐接枝改性

研究了微波辐射下的木质素磺酸钠与丙烯酸的接枝共聚反应,对微波辐射和常规加热接枝共聚反应的效果进行了比较,并用红外光谱分析了接枝共聚物的结构。同时测试了接枝共聚物在水煤浆中的分散稳定性能。结果表明,通过微波辐射可以得到较高接枝率的木质素磺酸钠丙烯酸接枝共聚物,其对水煤浆的分散稳定作用有明显的改善。