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1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物;变温1H NMR和理论计算结果表明,在300 K时,葛根素和4'-丙基葛根素以单一构型存在;而7,4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体,当温度升至330 K时,两种异构体可以相互转化;通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算,确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子,并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

Methods:168 teeth that acute periapical periodontitis random divicded into A or B group ,A was calcium hy,droxide group;B was formaldehyde and cresol.

168颗急性根尖周炎患者随机分为A、B两组。A组为氢氧化钙组;B组为甲醛甲酚组。

METHODS Eighty patients of Sjgren syndrome were randomly divided into 2 groups. The first group was treated with eyedrop cyclosporin A. The second group was treated with eyedrop cyclosporin A combined with artificial tear containing Chinese medicine.

80例有干眼症状的Sjgren综合征患者随机分成2组,第一组用环胞霉素A点眼治疗,第二组用环胞霉素A加中药人工泪Ⅰ号滴眼剂治疗。

Methods 150 patients with prostatitic of Ⅲa type were randomly divided into two groups. Patients in treatment group (n=75) were treated by combination of extraorgan short wave therapy (once 20 mins/day), wild chrysanthemum suppos.(a piece, once a day, take by anus) and controlled release tablets of Doxazosini Mesylas (40 mg, once a day). Patinets in control group (n=75) were treated by extraorgan short wave therapy.

将150例Ⅲa型前列腺炎患者随机分为2组,治疗组75例予体外超短波(每次20 min,每日1次)联合野菊花栓(每次1枚,每晚1次肛门给药)及甲磺酸多沙唑嗪控释片(每次4 mg,每晚1次睡前服)治疗,对照组75例单纯予体外超短波治疗。2组均14日为1个疗程,1个疗程后统计临床疗效和治疗前后慢性前列腺炎症状评分。

Methods: 48 casted Ni-Cr alloy metal specimens (12.0 mm×1.0 mm) were fabricated with ShoFu Vintage Halo porcelain and divided into six groups , eight pieces for each group. They were polished against 200-, 400-, 600-, 800-, and 1,000-grit sandpaper after body porcelain sintered, respectively. The specimens in a sixth group not polished was used as control. Surface roughness and Color parameters of the specimens were measured with a Surface Roughometer EX2154-13 and a spectrocolorimeter respectively.

铸造厚度1.0 mm、直径12.0 mm的镍铬合金试件48片,平均分为A~F 6组,每组8个,用等厚的松风Halo A2色粉状遮色瓷,体瓷和釉质瓷构筑金属烤瓷试件。A组体瓷不进行打磨,作为对照;B、C、D、E、F组分别用200、400、600、800、1 000目的水砂纸打磨体瓷表面;然后用表面粗糙度测试仪EX2154-13测量各组的表面粗糙度。

This implies that DNA methylation of promoter exon 1_7 may not underly the mechanism of GR up-regulation in GLP-1 -programmed rats.5 Hippocampal expression of GLP-1R and NGFI-A mRNAHippocampal GLP-1R (p =.009) and NGFI-A (p =.001) gene mRNA expression were significantly up-regulated in GP group as compared to VP group.Taken together, neonatal intramuscular injection of plasmid DNA encoding GLP-1 affects behavior and hippocampal GR expression in adolescent rats.

提示GR exon 1_7启动子区域DNA甲基化可能不参与GLP-1导致的GR转录上调。6海马GLP-1R和NGFI-A mRNA表达GP组大鼠GLP-lR(P=。009)和NGFI-A(P=。001)表达均显著高于VP组,表明肌肉注射GLP-1可能通过作用于其海马受体提高NGFI-A表达,进而调控GR表达。

A subgroup of a finite group G is called π-quasinormal in G if it permutes with every Sylow subgroup of G. A subgroup H of a group G is said to be c-supplemented in G if there exists a subgroup N of G such that G=HN and H∩N≤H=Core.

有限群G的一个子群称为在G中是π-拟正规的若它与G的每一个Sylow-子群是交换的。G的一个子群H称为在G中是c-可补的若存在G的子群N使得G=HN且H∩N≤H=Core。

The results show that coal and gangue are involved in the microbial role; the quantity of inoculums is directly related to the quantities of gas and the contents of methane, at the same time it has a certain degree of impact on the contents of NO(superscript - subscript 3)-N, NH(superscript + subscript 4)-N, S(superscript 2-), SO(superscript 2- subscript 4), and metals; moreover, because of the microbial anaerobic fermentation, the contents of NH(superscript + subscript 3) are seriously substandard; overall, the group B which has a smaller proportion of gangue has a less impact to the environment compared to the group A which has a larger proportion of gangue.

结果表明:煤、煤矸石参与了微生物作用;接种物的加入量与产气量和甲烷含量密切相关,并对硝酸盐氮、氨氮、硫化物、硫酸盐和金属也有一定程度的影响;同时由于微生物厌氧发酵的关系,氨氮严重超标;矸石比例较小的B组对环境的影响略小于矸石比例较大的A组。

The flame retardant molding compositions include an epoxy resin; a first transition metal oxide containing a refractory metal, such as tungsten trioxide; and a second transition metal oxide containing an oxyanion of a Group VIA element and a cation of a Group IIA element, such as calcium molybdate.

该阻燃模塑组合物包括环氧树脂、含高熔点金属的第一种过渡金属氧化物如三氧化钨;和含VIA族元素的含氧阴离子和IIA族元素的阳离子的第二种过渡金属氧化物如钼酸钙。

In addition to enabling people to use multiple intelligences, the building of confidence through speaking out in a group, the opportunity to test an idea in a sympathetic environment, the ability to become a useful member of a group with a common task, all these activities go towards forming a self-view.

除了提供一个能让观众使用多元智能的环境之外,博物馆也要能建构一个交鸣共感的氛围,让观众可以透过在团体中发表自己的意见或测试自己的观念,逐步建立他们的自信心;让他们可以在团队合作中共同努力完成一项工作,并感觉自己是有用的一份子。

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