酚

The electrospray ionization mass spectrometry was used to study the fragmentation pathway of kaempferol. The fragmentation pathway of kaempferol was also theoretically studied by means of Density Functional Theory.

采用电喷雾质谱技术对山奈酚的质谱过程进行了表征，并用量子化学方法对山奈酚的质谱裂解途径进行了理论研究。

Results: Kaempferol activated PXR-mediated transcription of CYP3A4 in a dose, time-dependent manner.

结果：山奈酚能通过活化PXR诱导CYP3A4的转录表达，其诱导能力随山奈酚的浓度增大和处理时间延长而呈增强趋势。

RESULTS Kaempferol, quercetin and impurities were separated.

结果 槲皮素，山柰酚与相邻杂质能很好分离，其分离度分别为1.96和5.32，理论塔板数以槲皮素峰和山柰酚峰计算，分别为5121和6673；在5～100mg·L^-1内峰面积与其浓度均呈良好的线性关系（r=0.9994，0.9996），样品回收率分别为97.58％和105.67％；两成分含量以湖南张家界的最高而湖北赤壁最低。

It is shown that the of the porous carbon towards (I_2) depends on the pore volume of the porous carbon; the adsorption of the porous carbon towards phenolic compounds depends on the density of carboxylic and lactonic groups on the surface of the porous carbon; the adsorption of the porous carbon towards Cr d...

发现多孔炭对酚类化合物及Cr的吸附以化学吸附为主，其中对酚类化合物的吸附由羧基与内酯基的表面密度合量决定，对Cr的吸附由表面官能团中羧基和内脂基含量的合量决定；多孔炭对I2的吸附以物理吸附为主，由孔容决定。

Image recording medium comprising a substrateand an imaging layer containing binder, developer, dye, stabilizer against oil exposure (e.g. Calcium salt of organic acid); method for preparing a recording medium comprising binder, radiation absorber, phenolic compound, calcium salt of organic acid, and leuco dye, said radiation absorber initiating reaction between phenolic compound, calcium salt of organic acid and leuco dye.

图像记录介质，其包含衬底和成像层，所述成像层包含粘合剂、显色剂、染料、抵抗油暴露的稳定剂；制备包含粘合剂、辐射吸收剂、酚类化合物、有机酸的钙盐和无色染料的记录介质的方法，所述辐射吸收剂引发酚类化合物、有机酸的钙盐和无色染料之间的反应。

Our previous studies have shown that ubiquitous overexpression of HmgD caused hemocytes proliferation and the formation of melanotic tumors in the Drosophila larvae. To clarify the mechanism of melanotic tumors appearance,we also generated RT-PCR analysis to test the transcriptional changes of PPAE and Spn27A,which encode the key factors in the phenoloxidasecascade pathway from larvae samples of mid-third instar,late-third instar and prior to pupation relative to wild type flies.Our result showed that in the HmgD overexpression mid-third instar larvae,the expression level.of Spn27A was lower than wild type,otherwise the expression level of PPAE was higher than wild type.It suggests that overexpression of HmgD affects the PO cascade pathway.

本研究组前期工作发现，过量表达HmgD引起果蝇幼虫体内血细胞增生，并出现黑色素瘤，为探讨HmgD过量表达导致了血细胞增生即形成黑色素瘤的分子机制，本研究分别提取三龄中期、后期和相对于野生型化蛹前时刻的幼虫的RNA，首先检测了编码酚氧化酶级联反应途径中的两个关键基因PPAE，Spn27A在突变体中的转录发生变化，结果发现，Spn27A在三龄中期的表达量低于野生型，而PPAE的表达高于野生型，表明过量表达HmgD影响了酚氧化酶级联反应途径，低水平的Spn27A不足以抑制PPAE的活性，活化的PPAE催化了PPO的活性，使其转变成有活性的PO，从而促进黑色素的生成，使果蝇体内产生黑色素瘤。

Surface waxes of the pericarp were observed by scanning electron microscopy; the structure and composition of cell wall were studied using light microscopy, transmission electron microscopy and Fourier transform infrared microspectroscopy respectively; the changes of calcium in the cell wall were determined by atomic absorption and the integrity of cell membrane by conductivity meter respectively.

本论文采用扫描电子显微镜研究果实表皮蜡层的变化，用光学显微镜、透射电子显微镜和傅里叶变换红外光谱仪研究果实细胞壁结构和成分的变化，用原子吸收分光光度计测定细胞壁钙离子的变化，用电导率仪检测果实细胞的完整性。同时测定了果实酚类物质含量、多酚氧化酶(EC 1.10.3.1)活性、过氧化物酶(EC 1.11.1.7)活性，并分析了果实硬度、糖和酸含量等品质指标。

This strain is able to degrade polycyclic aromatics such as naphthalene and biphenyl as well as monocyclic aromatics such as phenol. Under experimental conditions, strain DF51 is capable of degrading at concentrations of phenol ranging from 100 mg to 800 mg, which is catabolized mainly through the catechol 1, 2-dioxygenase pathway with a minor catechol 2, 3-dioxygenase pathway.

DF51。在本实验条件下，菌株DF51能够有效降解浓度范围为100-800mg L-1的苯酚，该菌代谢苯酚主要是通过邻苯二酚1， 2-双加氧酶催化开环途径进行，同时辅以邻苯二酚2， 3-双加氧酶催化开环，表明菌株DF51兼有混浊红球菌(Rhodoccocus opacus R7)和红球菌PNAN5Rhodoccocus sp。

Cotton plants with toxic gossypol could protect them from both insects and pathogens. However, cotton seed with toxic gossypol could not be regarded as a kind of food for human and monogastric animals due to its toxic.

植株部位棉酚的存在是棉株自身防御病虫危害的重要途径，同时也是由于棉酚的存在，致使棉子中棉子油和棉子蛋白不能用于人畜食用。

Naphthyl ethyl ether is synthesized from β-naphthol and ethyl alcohol by using nanometer complex heteropoly acid as catalyst.

该反应的最佳条件是：在酚醇物质的量比为1∶3.5，催化剂用量为0.6 g/0.04 molβ-萘酚，反应时间的7 h，β-萘乙醚的收率可达65.81

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。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。