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Chapter three focuses on the application of the Baylis-Hillman adduct in organic synthesis and some new exploration was made.

第一章对钐试剂促进的有机反应和Baylis-Hillman反应在有机合成中的应用作了简要介绍;第二章研究了二碘化钐促进的还原消除反应;第三章研究了Baylis-Hillman加成物参与的立体选择性的转化反应。

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料,通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚,随后经低价钛还原偶联,没有生成正常的分子内羰基-羰基偶联产物,而是得到反常的羰基与α,β-不饱羰基的双键偶联产物,较高收率地得到了含多官能团的CycI[3,2,2]azine衍生物。

The underlying technology of Fenestra is based on iodinated triglycerides contained in the lipophilic cores of oil-in-water lipid emulsions similar to the naturally-occurring chylomicron remnants that carry lipids within the body.

Fenestra技术是以包含在油水脂质乳剂的亲脂核心中的碘化甘油三酯为基础的,这与体内能够携带脂质的天然生成的乳糜微滴残余物相似。

Based on the different permeability of DNA-intercalant dyes YO-PRO-1 and propidium iodide to the membrane of viable, apoptotic and necrotic cells, cell samples were stained with 4μmol/L YP and 4μg/ml PI for 10 min, and the fluorescence intensity of both YP and PI were measured by fluorometer at Ex/Em wavelength of 485/538nm and 530/590nm, respectively.

根据正常细胞、凋亡细胞和坏死细胞的细胞膜对核酸荧光染料的不同选择通透性,用4μmol/LYO-PRO-1和4μg/ml碘化丙啶(Propidiumiodide,PI)染色96孔板中的细胞样品。分别在485/538和530/590的检测波长下借助荧光分光光度计检测细胞样品孔的YP和PI荧光强度。

The introduction of Potassium Iodide gave people new hope that there could be a better cure in the future.

钾碘化物的介绍给了人文新的能是在未来的好一些的痊愈在那里的希望。

Cows in the perinatal period were used in the experiment.Through clinical symptom and laboratory examination, they were divided into five groups that were healthy multiparity cows,healthy primiparity cows,cows with fatty liver disease, cows with ketosis and cows with rtention fetal membrance. We experimented blood of antepartum 15,8,1 day and postnatal 1,8,15,22 day,then assayed Thyroid hormone, thyroid-stimulating hormone, Iodine ,Selenium, GSH-Px in blood-serum. At last,we analysed data by statistical way .

本实验以处于围产期的57头奶牛为研究对象,通过实验室检查结合临床症状查出其中健康的经产牛、健康的初产牛及患酮病、患脂肪肝、患胎衣不下的自然病例,在奶牛产前15天,产前8天,产前1天,产后1天,产后8天,产后15天和产后22天分别采颈静脉血,检测血清中甲状腺激素(T4和T3)、促甲状腺激素、碘、硒和谷胱甘肽过氧化物酶的含量、摸索出其动态变化并作了统计分析。

Experimental data of critical parameters, and the correlations of saturated liquid and vapor density, enthalpy of vaporization, vapor pressure, pVT properties, second virial coefficient, ideal-gas heat capacity, surface tension, viscosity and thermal conductivity are obtained in this paper.

介绍了三氟碘甲烷(CF3I)热物理性质的研究成果,包括临界参数的实验数据以及饱和气液密度、饱和蒸气压、汽化潜热、 pVT性质、第二virial系数、理想气体比热容、表面张力、粘度、导热系数等的关联式,并与文献数据进行了比较,分析了实验数据对关联式的偏差。

Melting point 3410 ℃, boiling point 560 ℃, relative density of 1935, F the external electronic structure of 5d46s2, in the chemical reaction time is very easy to lose 1-6 electronic, but also can get 1-2 electronic, so oxidation number of 0,± 1,± 2, 3, 4 , 5 and 6, with 6 price of the most stable compounds, such as WO3 does not dissolve in water, the air will form in the tungsten trioxide thin protective layer of tungsten, tungsten with fluorine at room temperature, chemical combination, red hot when there is no moisture and Bromine iodide together, red hot when you can and water reaction WO3, at room temperature reaction of tungsten with aqua regia, but the hot concentrated hydrochloric acid and sulfuric acid can only be played with its weak response, but molten nitrate, nitrite, too Hydrogen peroxide, sulfur steam, steam and other phosphorus can play intense reaction, high temperature can not be carbon, boron and silicon reaction of binary compounds, widely used in industrial tungsten steel and tungsten carbide, pure tungsten filament is used to the system, and X-ray tube Tube heating components, semiconductor components can be prepared tungsten silicide, tungsten industrial production is white or black tungsten ore tungsten ore refining.

熔点3410℃,沸点560℃,相对密度1935,F外围电子结构为5d46s2,在化学反应时很容易丢掉1—6个电子,也能得到1—2个电子,所以氧化数为0、±1、±2、+3、+4、+5和+6,以+6价化合物最稳定,如WO3不溶于水,空气中的钨会形成薄层三氧化钨保护层,钨能与氟在室温下化合,红热并无潮气时能与溴、碘化合,红热时还能和水反应生成WO3,室温下钨可与王水反应,但热的浓盐酸和硫酸只能与其起微弱反应,但对熔融的硝酸盐、亚硝酸盐、过氧化氢、硫蒸汽、磷蒸汽等能起激烈反应,高温下不能与碳、硼和硅反应生成二元化合物,工业上广泛使用钨钢和碳化钨,纯钨用来制灯丝、电子管和X射线管的发热元件,硅化钨可制半导体元件,钨工业生产是将白钨矿石或黑钨矿石精炼。

Result and Conclusion: The yolk oils processed by daking and dry distillation are almost similar in the contents of fatty oils, type of fatty acids, acid value, iodine value, saponification value, relative density and refractive index, while obvious differences were found in the products processed by chloroform extraction.

结果 :烘法和干馏法炮制的蛋黄油中脂肪油含量,所含脂肪酸的种类、含量以及酸值、碘值、皂化值、相对密度、折光率相近,氯仿提取法制备品则差异较大。结论:烘法和干馏法制备的蛋黄油中脂肪油部分没有明显区别,二者与直接用氯仿提取的蛋黄脂肪油相比则有较大差异。

Recognizing the importance of raising public awareness of IDD, the Rotary clubs of Shizuoka Nihondaira, Japan, and Patan West, Nepal, and their respective districts (2620 and 3290) teamed up to provide educational programs at 68 schools in the Patan area.

有鉴於提高大众对於缺碘症的认识的重要性,日本2620地区静冈日本平扶轮社、尼泊尔巴丹西区扶轮社、及他们所属的两个地区(2620及3290地区)便合作在巴丹地区的68个学校提供教育计划。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

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