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The results show that under the condition of the experiments, the high KOH concentration is benefit to the formation of soluble niobate, but the high temperature is favor of the formation of insoluble niobate, and the insoluble tantalate is the sole leachin...

而KOH浓度一定,温度升高,有利于生成偏铌酸钾。浸出时间过长也将促使不溶性偏铌酸钾的形成。试验条件下,Ta2 O5在KOH高浓介质体系中只得到不溶性的偏钽酸钾。Nb2 O5和Ta2 O5混合物的浸出规律与纯Nb2 O5类似,铌、钽不能被选择性地浸出。

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。

The reaction between 3, 4 cinnamic acid and 〓 has also been investigated as an evidence for the electron transfer mechanism.

以〓为过氧自由基模型,研究了羟基肉桂酸衍生物对该自由基的清除作用,发现这类化合物,特别是芥子酸,能够通过电子转移反应有效地还原过氧自由基。3,4-亚甲二氧基肉桂酸与〓的反应的动力学研究为电子转移机制提供了证据。

The free bile acid and dihydroxy bile acid glycine union(exisistence by the of non-ionic form ) also be absorb again through the simple proliferation way.this may occurs in any part of the small intestine and colon.

未结合的胆汁酸和二羟基胆汁酸的甘氨酸结合物,也过简单扩散的方式被重吸收。这种通过小肠膜的非离子化扩散可在小肠的任何部位及结肠发生。

In this paper, the copolymers of acrylic acid/acrylamide, isopropenyl phosphonic acid/acrylamide were prepared with peroxide as initiator, water as solvent, acrylic acid, isopropeneyl phoshonic and acid acryl amide as monomers.

以水为溶剂,过硫酸铵为引发剂,丙烯酸、异丙烯膦酸、丙烯酰胺为单体,分别合成了低分子质量的丙烯酸/丙烯酰胺、异丙烯膦酸/丙烯酰胺二元共聚物,以及不同配比的丙烯酸/异丙烯膦酸/丙烯酰胺三元共聚物。

In this thesis,MWNTs were modified firstly using concentrated acid of H_2SO_4 and HNO_3,and then octadecyl isocyanate was grafted onto the surface of the MWNTs to improve the dispersion and the interaction between the filler and the matrix.

第一步,用浓硫酸和浓硝酸的混合液对MWNTs进行酸化处理,第二步,用廉价的十八烷基异氰酸酯对酸化过的MWNTs进行烷基化处理。

The properties of performic acid, peracetic acid, and perpropionic acid are reported and are compared with peroxymonosulfuric acid.

该performic酸,过氧乙酸属性和perpropionic酸的报告,并与peroxymonosulfuric酸比较。

A series of SiW_(12)/AC catalysts with different silicotungstic acid loadings supported on acti- vated carbon which was treated with 10% HNO_3 solution were prepared by an impregnation method and the catalytic performance of SiW_(12)/AC for the synthesis of trioxane were investigated.

以10%硝酸溶液处理过的活性炭为载体,采用不同质量分数的硅钨酸SiW_(12溶液为浸渍液,制备了不同负载量的SiW_(12)/AC催化剂,考察了催化剂在合成三聚甲醛中的催化性能,并用XRD、FT-IR、NH_3- TPD、BET、TG-DSC等手段对SiW_(12)/AC催化剂晶粒大小、催化剂表面的酸量及酸强度、比表面积及热稳定性等微观特性进行了表征。

The mechanism of carbonization process of aluminate solution was analyzed thermodynamically. The results show that the internal reason of precipitation of Al3 in the process is its spontaneous nucleation caused by supersaturation of aluminate solution. The behaviors of SiO2 in the process are in accordance with that from published experiment, which implies that the content of product SiO2 from carbonization depends on its solubility but is not the result of absorption. The thermodynamic calculation for forming Na2O·Al2O3·2CO2· n H2O was achieved.

摘 要:为对高浓度铝酸钠溶液碳酸化分解过程中产品杂质含量的控制提供理论依据,分析了铝酸钠溶液碳酸化分解过程的热力学,认为该过程中Al3析出的真正机理是过饱和铝酸钠溶液的自发结晶;而基于分解过程中平衡浓度的热力学计算表明,在碳酸化分解过程中SiO2的变化规律与公认的三段变化规律一致,说明该过程产品中SiO2的含量取决于它在溶液中的平衡浓度,而非吸附所致;同时还分析了丝钠铝石的形成热力学。

The effects of phenolic acid compounds in vegetables and fruits on metabolicactivation of BaP in rats,as well as 〓 and TCA induced lipid peroxidation inmouse and Salmonella typhimurium TA104 cells were investigated using DNAadducts as a biomarker to assess DNA damage induced by xenobiotic carcinogens.BaP was used to study the genotoxic carcinogenesis,while 〓 and TCA were usedto study the non-genotoxic carcinogenesis.The possible protection mechanisms ofphenolic acid compounds on DNA damage were studied.

本研究根据化学致癌过程的遗传毒性和非遗传毒性机理,以DNA加合物作为机体接触外来化学物而导致DNA损伤的生物学标志物,通过观察酚酸类化合物对大鼠体内BaP活化代谢以及〓和TCA诱导小鼠肝微粒体脂质过氧化的影响,及酚酸类化合物对BaP和TCA诱导的沙门氏菌TA100和TA104形成DNA加合物的影响,探讨蔬菜、水果中酚酸类化合物对外来化学物诱导的DNA损伤的保护机制。

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In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

Very pretty, but the airport looks more fascinating The other party wisecracked.

很漂亮,不过停机坪更迷人。那人俏皮地答道。