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By using the a device being similar to water segregator and by controlling the temperature, cyclization of the intermediate product in chloroform reduced carbonization and gave 2-dodecaneanthraquinane in 68.1% yielding.

以十二烷基苯和苯酐为起始原料,经酰基化、关环和磺化三步反应合成了3-十二烷基蒽醌磺酸;并进一步改进和优化了合成工艺条件:即在催化剂三氯化铝过量50%并有三乙胺存在的条件下,中间体2-(4-十二烷基苯甲酰基)苯甲酸收率为72.45%;关环反应采用氯仿作溶剂,利用类似分水器的装置有效控制反应温度以减少碳化,2-十二烷基蒽醌的收率为68.1%。

Seven central depressants,including chloral hydrate,potassium bromide,sodium bromide,cal- cium bromide,alcohol,amytal and chloretone, were studied for their effects on the intraperito- neal toxicity of tartar emetic and sodium stibo- gluconate in mice.

1。关于吐酒石与葡萄糖酸锑 V 钠对小白鼠的致死作用,我们探索了一些中枢抑制药与兴奋药的影响。所试的抑制药有水合氯醛,溴化钾,溴化钠,溴化钙,酒精,安眠妥与三氯叔丁醇七种。兴奋药有苯甲酸钠咖啡硷与士的宁二种,以及溴咖合剂。2。

In this paper, the effect of sugar and sodium alginate on microwave puffed wax gourd according to the index of puffing ratio was studied.

对冬瓜块进行微波膨化,探讨了不同的糖制浓度和涂胶工艺对产品膨化率的影响,结果表明,糖制浓度5%、海藻酸钠浓度0.6%时产品具有较好的膨化度。

Therefore esterification crosslinked reactionbetween polyearboxylic acid and wood can be quantitatively determined.According toexperiment results of stereoscopic configuration choices by crosslinking agents,crosslinkingreaction between model of reaction intermediate and wood,and the intermediate characteristic incrosslinking reaction,crosslinking reaction intermediate was proofed.We can infercrosslinking reactions between polycarboxylicacid and wood want through a mechanism of twosteps reaction process,the first cyclic anhydrides were formed as intermediates by dehydratingbetween hydroxyls in polycarboxylic acids,second esters were occurred by substitution reactionbetween wood hydroxyls and cyclic anhydrides.

从而可全面定量表征木材与多元羧酸类化合物的酯化交联反应;依据交联剂立体构型选择性、反应中间体模型物与木材的交联反应和交联反应中间体的波谱特征实验结果,证实了交联反应中间体,因此可以推测:多元羧酸类化合物与木材化学组分的交联反应是经历两步反应的机理,首先多元羧酸中相邻羧基的羟基之间脱水形成五元环酸酐中间体,然后木材的羟基与酸酐发生亲核取代反应形成酯。

Results: The changes following hydrocortisone intervention of rats could be identified by PCA, and the kidney deficiency syndrome rats entered a state of "hyperfunction", involving a series of changes in metabolic pathway and metabolic network. The response integral area of lactic acid (δ 1.37) increased, indicating the accumulation of metabolites of lactic acid. The amount of dimethylamine (δ 2.72) also increased, indicating that the disorder of kidney function was related to kidney-deficiency syndrome. The response of creatinine (δ 3.87), asparaginic acid (δ 2.83), taurine (δ 3.44, 3.28), and hippurate (δ 7.84, 7.56, 7.64, 3.97) all decreased significantly, indicating that the hydrocortisone might cause adrenal cortex excretion injury. The response integral area of succinate (δ 2.41) and citric acid (δ 2.53, 2.68) decreased, which was usually caused by disorder of the mitochondrial function.

结果:PCA方法处理肾虚证和空白对照大鼠尿液数据显示,两组大鼠的数据可以在得分图实现分类,与对照组比较肾虚组大鼠由于氢化可的松诱导,大鼠机体进入一个过消耗后衰弱的状态,相关代谢发生显著变化,乳酸(δ 1.37)代谢发生堆积;二甲胺(δ 2.72)的含量增加,提示肾虚与肾功能异常是密切相关的;天冬氨酸(δ 2.83),牛磺酸(δ 3.44, 3.25),马尿酸(δ 7.84, 7.56, 7.64, 3.97),肌氨酸(δ 3.87)等的相对积分面积明显下降,这预示糖皮质激素可能引起了肾上腺皮质分泌功能的损害;琥珀酸(δ 2.41)和柠檬酸(δ 2.53, 2.68)是三羧酸循环能量代谢及糖酵解的中间产物,其含量的降低,通常是由于线粒体功能紊乱所引起。

Based on the security,efficacy,cheapness and easy gain three disinfectant drugs(acids, degerming agents,surface active agents)were chosen to killing coccidial oocysts in chicken.

本试验按照安全、有效、经济、来源容易的原则,从对鸡球虫卵囊有一定抑杀作用的三类消毒药物(酸类、消毒剂类、表面活性剂类)中,筛选了 17组不同药物和浓度的搭配组合,设计了 3个试验:抑制鸡球虫新鲜卵囊孢子化试验;抑杀孢子化卵囊试验;新鲜卵囊和孢子化卵囊经药物处理后感染小鸡试验。

By means of GPC,IR,GC-MS,~(13)CNMR,~1HNMR,Methylation analysisetc,structural properties of PST-1 were identified as follows:The Mwof PST-1 was 3.44×10~6 Da and its optical rotation was _D~(20)=+0.110°(c0.1, H_2O); PST-1 constituted 8 simple sugars and the molar ratio was 2,4-Dimethoxy-Mannose:Rhamnose:Ara-binose:Xylose:Galactose:D-Galacturonic acid:Mannose:D-glucuronic acid=2%:5%:24%:9%:3%:1%:46%:10%;The chief bone of PST-1 was 1,3,6-linked-β-D-Man residue and the side chains contained Furanoid and Pyranoid residues.

结合GPC、旋光度测定、IR、GC-MS、~(13)CNMR、~1HNMR、高碘酸氧化法、Smith降解以及甲基化方法等分析测试方法,得到PST-1的单糖组成及结构表征,实验结果如下:红豆杉多糖PST-1是重均分子量为3.44×10~6 Da的支链多糖,旋光度为20D=+0.110~0(c0.1,H_2O);PST-1单糖组成为:2,4-Dimethoxy-Mannose:Rhamnose:Arabinose:Xylose:Galactose:D-Galacturonic acid:Mannose:D-glucuronic acid=2%:5%:24%:9%:3%:1%:46%:10%;PST-1的骨架结构为:具有1,3,6-连接的β-D-甘露糖残基骨架,侧链分枝包括非还原末端的呋喃型α-L-阿拉伯糖残基、吡喃型α-L-阿拉伯糖残基、β-D-木糖残基、β-D-甘露糖残基、2,4-二氧甲基-β-D-甘露糖残基和α-D-葡萄糖醛酸残基;侧链的糖残基也可能存在2,5-二氧-取代呋喃型α-L-阿拉伯糖基、3-氧-取代的β-D-木糖残基、6-氧-取代的α-D-半乳糖醛酸残基、6-氧-取代的α-D-半乳糖残基、4-氧-取代的α-D-葡萄糖醛酸残基和2-氧-取代的α-L-鼠李糖残基,同时后者也可能穿插在主链上。

The optimum reaction conditions were that the molar ratio of maleic anhydride and p-nitroaniline was 1.2:1, the volume ratio of toluene and DMF was 10:1, the amination temperature was 20~30℃ the cyclization temperature was 145~150℃ and the cyclization time was 6 h over; the amount of p-toluene sulfonic acid was 12% of total reactant mass, the amount of copper sulfate was 0.1~0.5% of total reactant mass, the amount of hydroquinol was 0.1% of total reactant mass.

得到的最佳工艺条件是:n:n为1.2:1,V:V为10:1;胺化反应温度为20~30℃,环化反应温度为140~150℃,环化反应时间为6h以上;对甲基苯磺酸用量为反应物总质量的1%~2%;硫酸铜用量为反应物总质量的0.1%~0.5%;对苯二酚用量为反应物总质量的0.1%。

Liquor with uncooked materials is a kind of safe, hygeian and pure new technological liquor.

摘 要:回顾了生料糖化与发酵的研究历程,阐述了淀粉构造,生淀粉糖化机理,生料酒曲组分,生料酿酒和生料酒曲在大、小曲酒、黄酒生产方面的应用方法;以及与己酸菌、酯化酶共酵来提高酒质的技术措施;提出生料酒是一种安全卫生纯净的新工艺白酒。

The results showed that intermidiate 1, 2-propanediol-sebacate of low relative molecular mass was synthesized with toluene-p-sulfoinc acid as catalyst, benzene as watercarrying agent, and of mole ratio of sebacic acid to 1, 2-propanediol of 1:4. The glass-transition temperatures of PPSC were below 0 ℃ which confirmed that PPSC would be in a high-elastic state of ambient temperature and human body temperature. PPSC was a elastomer with moderate crosslinkage, low module and high elongation, and had rapid degradation ratio (degradation degree more than 50%) in phosphate (pH value 7.4) at 37℃.

结果表明,以对甲苯磺酸为催化剂、苯为带水剂,在酸醇比为1,4的条件下可合成较低相对分子质量的中间体癸二酸聚酯二元醇;PPSC弹性体的玻璃化转变温度在0℃以下,于室温及人体温度下处于高弹态;PPSC为适度交联的、低模量高伸长的弹性体,其在37℃、pH值为7.4的磷酸盆缓冲溶液中具有较快的降解性(降解度超过50%)。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。