查询词典 p-phthalic acid

Their chemical structures were elucidated on the basis of physicochemical properties and spectral dataIR,FAB-MS,~(1H-NMR,and ~(13)C-NMR.Result: Six compounds were isolated and identified as: aurantiamide acetate(1),cyclo(2),N-p-coumaroyltyramine(3), N-trans-feruloyltyramine(4),N-cis-feruloyltyramine(5),and nicotinic acid(6),respectively.

结果：分离鉴定了6个生物碱，分别为aurantiamide acetate(1)、环二肽(2)、香豆酰基酪胺(3)、N-反式阿魏酰基酪胺(4)、N-顺式阿魏酰基酪胺(5)、烟酸(6)。

Alkylbenzene, normal alkanes and alkylcyclohexane on the pyrolysates of P. Boryanum at 300℃ had uniform distribution and the relative content of them was similar, indicating that they originated from same precursors. Fatty acids, alcohol and ketone in algal cell are the possible precursors. For example, the precursor of relatively abundant C〓 alkylbenzene and alkylbenzene with C〓 side chain perhaps related with palmitic acid. N-alkylnaphthalene in pyrolysates at 300℃ probably derived from alkylation of cleavage products of aromatic steranes and terpanes.

在盘星藻300℃热解产物中，烷基苯、正烷烃和烷基环己烷碳数分布一致、各化合物的相对含量接近，表明它们有相同的来源，藻类体内的脂肪酸、醇和酮及细胞壁等物质可能是其母质，相对含量较高的碳数为16及侧链碳数为16的烷基苯类化合物，其前身物可能与软脂酸有关。300℃热解产物中的正烷基萘类化合物，可能由芳香甾、萜类的降解产物与直链烃类加成烷基化而形成。

The residue is then cooled and acidified with dilute hydrochloric acid. The toluene layer is separated off, washed with water and distilled. Toluene and other low-boiling fractions first distil over and finally pure diethyl phenylmalonate is obtained boiling at 165-166°C, under 20 mm. pressure and having m.p. 16 °C. The yield is 85% of the theoretical.

剩余物冷却然后用稀盐酸酸化，分理出甲苯层，用水洗涤，然后蒸馏，甲苯和其他低沸点馏分先被蒸馏出来，最后获得20毫米压力下沸点为165-166摄氏度的二乙基苯基丙二酸酯，其熔点为16摄氏度，理论收率为85%。

At the endpoint, the thymus, spleen and uterus were weighed separately; the femoral dry weight, bone-calcium, phosphor, magnesium and hydroxyproline contents of femoral were measured; the histomorphological features of bone were observed and the biochemical indexes in serum (Ca, P, ALP, TRAP, E2, BGP) were determined after the mice were given SAR at the dose of 10, 30, 90 mgkg^(-1) respectively, and were compared with the model group, the normal control and the positive control. RESULTS: The osteoporosis of high turnover type was formed with feeding retinoic acid to experimental mice. Compared with the model group, the lessening of femoral dry weight, the short femoral transverse diameter, the decrease of bone mineral and bone-hydroxyproline of SAR groups were improved.

维A酸105mgkg^(-1致小鼠骨质疏松模型，SAR10、30、90mgkg^(-1灌胃给药，实验过程监测体重，2周后以比色法测定血清钙、磷含量和碱性磷酸酶、抗酒石酸酸性磷酸酶活性，竞争放射免疫法测定血清中骨钙素、雌二醇(s-E2)含量，处死动物后取脾、胸腺、子宫称重，取股骨进行骨组织形态学观察，测定并比较骨计量学和骨钙、骨磷、骨镁及骨弃脯氨酸含量。

Twenty-four-hour ambulatory acid and bilirubin measurements on the lower part of esophagus were obtained with synectics Bilitec 2000 and Digitrapper Mk Ⅲ. Results The esophagitis in group R was more severe than that in group P.

16例难治性GERD患者及16例初诊为GERD的患者，行内镜及病理组织学检查，14C呼气试验检测Hp，以便携式PH及胆反流监测仪24小时同步监测食管下端PH及胆反流情况。

The LB films formation and the orientation of TSPP LB films of 5, 10, 15-tn (p-chlorphenyl)-20-m- oxy (a-steanic acid) phenylporphyrin were studied.

研究了具有双亲性的5，10，15-三对氯苯基－20-邻苯基卟啉在气－液界面上的成膜性能，制备了不同层数的TSPP LB膜。

Microbial Organic Fertilizer contains large amount of organic substances and soilavailable microbe. During life activities process of SABs, a great deal of organic acid wasproduced, available form of N, P and K were released continually. These effects could improve soilphysical, chemical properties and soil fertility, take positive role for planting of Alfalfa in salineland and amendment of saline land. So research and application of MOF is important for saline landamendment and usage.

生物有机肥中含有大量的有机质、土壤有益微生物，其所含的有益微生物在其生命活动过程中，能产生大量有机酸，不断释放出土壤中的迟效态氮磷钾，能有效改善土壤的理化性质，提高土壤肥力，这些因素都会对盐碱地种植苜蓿和改良盐碱土起到一定的积极作用，因此研究利用生物有机肥改良、利用盐碱土具有重要的意义。

In order to obtain reasonable processing parameter of electroless nickel plating, the influences of the concentration of reductants NaH_2PO_2 and complex agents DL-lactic acid, stabilizers ,pH value and temperature on the deposition rate , the content of P and stability of the plating solution were studied.

在化学镀镍的工艺中，研究了次亚磷酸钠和络合剂乳酸的浓度、pH值、稳定剂和温度等工艺参数等对沉积速度和镀镍层含磷量的影响，找出了合理的化学镀镍工艺：还原剂的浓度为25 g/l~ 30g/l，络合剂乳酸的浓度为8ml/l ~ 12 ml/l，pH值的范围为4.6 ~ 4.9，选择作稳定剂，温度为85℃左右。

In a design of square,regressive and orthogonal rotation with five factors,a field trial was conducted using Toona sinensis.This sdudy was undertaken to investigate the effects of gibberellic acid(GA3), 6-benzy laminopurine, thiourea C.P.(NH2 2CS, Zinc Sulphate(ZnSO4), sa!tpeter(KNO3) for stratification on the dormancy-breaking of Toona sinensis,and to explore a more effective dormancy-breaking method and its mechanism.

本研究以一、二年生的无性繁殖红香椿苗为材料，采用五因素二次正交旋转组合设计，综合定量地研究6—BA、GA_3、硫脲、ZnSO_4、KNO_3五种化学药剂及其组合对香椿休眠解除的影响及其机理进行研究，并探讨更为有效的打破香椿休眠的方法。

Results The daily intakes were deficient in energy, calcium and vitamin C, while the intakes of protein, nicotinic acid, vitamin E, Fe, P, K, Se and Cu were adequate.

结果 南京市中小学生能量、钙和维生素C的摄入量不足，蛋白质、尼克酸、维生素E、铁、磷、钾、硒和铜的摄入较高。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。