查询词典 acid

Quinolinic acid is an endogenous neurotoxin, that activates the N-methyl-D-aspartate receptor and the biosynthesis of NAD+ precursor.

Quinolinic acid是一种内生性的神经毒素，活化N-methyl-D-aspartate接受器以及在生物合成NAD+的前驱物。

The purpose of this research is to discuss the probable mechanism of acupuncture treatment combined with pharmacotherapy regulating glutamatergic function and anti-free radical effect on the dementia rats due to hippocampal CA, lesions induced by quinolinic acid. So that the author can provide the clinical application of acupuncture treatment combined with pharmacotherapy with experimental evidences in treating Alzheimers disease.

本文的研究目的是探讨针药结合对喹啉酸(Quinolinic Acid，QA)损毁海马CA_1区所致痴呆大鼠模型的中枢兴奋性神经递质谷氨酸(glutamate，Glu)和抗氧化指标的影响及其对提高痴呆大鼠学习记忆能力的可能机理，为临床针药结合治疗阿尔茨海默氏病(Alzheimers disease，AD)提供实验依据。

XC7201 is an interesting protein comprising 176 amino acids. Many sequences in the prokaryote and eukaryote kingdom with high similarity score were detected by BLAST search. It was predicted to a 3-hydroxyanthranilate 3,4-dioxygenase (3HAO), which is an extradiol dioxygenase that catalyzes the final conversion step of tryptophan to quinolinic acid in the kynurenine pathway.

XC7201由176个胺基酸所组成，比对已知物种资料库后发现在原核真核菌中都有类似的序列，其功能被预测为3-hydroxyanthranilate 3，4-dioxygenase (3HAO)。3HAO是一种双氧化酵素，在生物体进行把Tryptophan转变成Quinolinic acid的生合成途径中最后一个反应的催化。

Hibiscus protocatechuic acid, a simple phenolic compound, isolated from Hibiscus sabdariffa L.

原儿茶酸（protocatechuic acid， PCA）是一简单多酚类化合物，经由乾燥的洛神花萃取而来的。

AIM: To evaluate the effect of retinoic acid on chick scleral fibroblasts proliferation and ultrastructural changes in vitro.

摘要目的：研究视黄酸(retinoic acid，RA)对体外培养的鸡巩膜成纤维细胞的生长及其超微结构的影响。

The degree of hydrolysis was measured by 2,4,6-trinitrobenzene sulfonic acid method.

以2，4，6- trinitrobenzene sulfonic acid测定水解程度。

Pristine Li-Al LDHs are synthesized by hydrothermal process in different reaction conditions by varying the aging time for 1 and 24 hours. Both the Li-Al layered double hydroxides (abbreviated as Li-Al LDH1 and Li-Al LDH24 for aging time 1 hour and 24 hours, respectively) were modified by using sulphanilic acid sodium salt hydrate, modified agent to form modified Li-Al LDH1-SAS and Li-Al LDH24-SAS. The morphology of the pristine layered double hydroxides are investigated by using wide angle X-rays diffraction, scanning electron microscopy and particle size analyzer which indicates that the crystallinity and aspect ratio is increased with increasing the aging time from 1 hour to 24 hours. The particle size of Li-Al LDH24 and Li-Al LDH1 are found to be ~1000 nm and ~250 nm, respectively. Both the pristine and modified LDHs are characterized by XRD, FTIR spectra and thermogravimetric analysis.

本研究目的在於改变长晶时间的长短，合成出同径大小的Li-Al LDHs，再经由改质剂sulphanilic acid sodium salt hydrate将Li-Al LDHs无机层材表面有机官能化制备出改质型Li-Al LDHs-SAS，於是进一步藉由扫描式电子显微镜、射径仪和穿透式电子显微镜等仪器分别观察LDHs改质前和改质后其主层结构型态上的变化；从中可以发现Li-Al LDHs随著长晶时间的增加其径有随之增大的趋势，但经有机化改质后其径会由於改质环境的影响明显低许多，针对此现象本实验将未改质和改质后之Li-Al人工无机层材制备成复材进一步探讨其在热性质和难燃特性上的为表现。

Two new complexes, [Mn22(H2bta)2(H2O)]n (1) and [Cu2(H2bta)0.5(H2O)]n (2)(H4bta＝1,2,4,5-benzene- tetracarboxylic acid, L＝imidazo[4,5-f][1,10]phenathroline) were prepared under hydrothermal conditions and their structures determined by single-crystal X-ray diffration.

在水热条件下合成了两个新的配合物，[Mn22(H2bta)2(H2O)]n和[Cu2(H2bta)0.5(H2O)]n，其中(H4bta=1，2，4，5-benzenetetracarboxylic acid， L= imidazo[4，5-f][1，10]phenathroline )，通过单晶X射线衍射仪对其结构进行了测定。

The range of bacteria that could be effectively detected corresponded to about 10^4 to 5×10^5 cells/mL. Results obtained, using a medium with toluic acid as the sole carbon source, indicated that in soil either with, or without, the addition of toluene, P. putida D8 could not be recovered, 288 and 72 hours after inoculation, using classical growth-dependent culture techniques.

根据传统之平板培养法，利用toluic acid为唯一碳源之选择培养基，侦测Pseudomonas putida D8在土壤中之消长情形，结果显示在有添加甲苯之状况下到188小时后方才无法测得目标菌株；反之，在没有添加甲苯的情况下，48小时后便已无法测得。

P19 differentiation was induced by retinoic acid, and P19 cells cultured on gelatin were used as control. Differentiated cells were observed with microscope. TURNEL method and DNA fragmentation analysis were used for apoptosis confirmation. Survival cells were detected by AlamarBlueTM method.

视黄酸(retinoic acid，RA)诱导P19细胞分化，培养于明胶包被培养板上的P19细胞为对照组，普通光学显微镜观察其神经分化情况，TURNEL法和DNA片段化分析法检测细胞凋亡情况，alamarBlueTM染色法检测细胞存活情况。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。