查询词典 skeleton

The first synthetic route uses 1,2,4-trimethoxybenzene and chloroacetonitrile in forming 2,4,5-trimethoxy-a-chlor-acetophenone under the anhydrous condition, then the intermediate condensates with papaverine forming the core pyrro[2,l-a]isoquinoline, followed by formation and lactonization to form the lactone ring. The second synthetic route uses prepared aldehyde with prepared ethyl nitroacetate by Knoevenagel condensation to obtain 2-Nitro-3-(2,4,5-tris-methoxy-phenyl)-acrylic acid ethyl ester and 2-Nitro-3-(2,4,5-tris-benzyloxy -phenyl)-acrylic acid ethyl ester etal intermediates. The lamellarin skeleton could arise from condensation of the papaverine and these intermediates by Michael reaction, the ester group is provided for subsequent lactonization. The third synthetic route uses coumarin or indan-l,3-dione derivatives and papaverine to form lamellarin under basic conditions.

第一条路线首先从1，2，4-三甲氧基苯出发与卤乙腈作用合成卤代芳酮中间体，然后与罂粟碱反应合成开链片螺素，最后经乙酰化、去保护、成内酯环得到片螺素；第二条路线由制备的芳醛和制备的硝基乙酸乙酯经缩合得到2-硝基-3-芳基丙烯酸乙酯，然后由该中间体与罂粟碱反应，在完成关环的同时也引入酯基，最后去保护、成内酯环得到片螺素；第三条路线是由香豆素或茚二酮出发，经溴代后的中间体与罂粟碱反应，得到片螺素的基本框架。

For better understanding the relationship between chemistry composes and activities, and promoting the competitive strength, 16 benzene derivatives (three new compounds and a novel skeleton) were isolated from Ligularia veitchiana which were collected in Hubei province.

为了更好的了解植物药中的化学成分及药效关系，提升我国植物药在国际市场的竞争力，我们对采自湖北的离舌橐吾进行了系统的化学成分分离，得到16个苯的衍生物，其中，新化合物三个，新骨架化合物一个。

How to ensure this new structure to be in elastic state under frequent earthqu ake, be mendable under design earthquake and not collapse under infrequent earthquake, especially the last item, is the problem to be solved imminently in engineering field. Center around this problem, 5 aspects of investigation are carried out as following:(1) The experiment of seismic performance of ASCCs in this new frame structure has not been reported, in order to study this problem, 9 ASCC specimens with shear steel plate are tested subjected to the horizontal low cyclic loading, in which, the shear span ratio is 3 and axial compression ratio is different. The hysteretic curves of 9 specimens are obtained. The seismic performance indexes such as energy dissipation, stiffness degradation, strength degradation, skeleton curves and ductility of this kind of column are acquired, and the seismic fortification measures including ultimate values of axial compression ratio under different seismic degree are suggested.

1新型框架结构中所采用的角钢混凝土柱抗震性能的试验研究尚未见报道，针对这一问题，本文进行了9根剪跨比为3、不同轴压比、采用钢板箍的角钢混凝土柱在水平低周反复荷载作用下的试验研究，获得了9根试验柱的滞回曲线，考察了该类柱的耗能、刚度退化、抗力衰减、骨架曲线及延性等抗震性能指标，建议了角钢混凝土柱在不同抗震等级下的轴压比限值等抗震构造措施。

Methods The surgery included both osteotomy and Medpor transplantation as a large scale filling stuff transfer under periosteum for hemi fical microsomia(3 cases) and simple mandibular hypoplasia (6 cases) reconstructi on. Results The result was satisfactory and showed a good nature skeleton facial outline.

方法截骨并以Medpor作为填充材料，进行多部位，大范围组合填充于骨膜下骨与肌肉之间，矫治半侧颅面矮小3 例，单纯性下颌骨发育不良6例。

Traditional crafts and modern high-tech portfolio, designed to produce sophisticated, a fan of the skeleton with natural bamboo and wood as raw material; fan using special paper, silk, cotton and other fabrics; by baking, cooking, sculpture, painting processes, and After mothproof, anti-corrosion treatment, carefully produced.

用传统手工艺和现代高新技术组合，设计新颖，制作精良，扇子的骨架用天然的竹、木为原料；扇面采用特种纸张、丝绸、棉布等织物；经烘、煮、雕刻、绘画等工序，并经过防蛀、防腐处理，精心制作而成。

To evaluate the efficacy of Nocardia rubra cell wall skeleton in advanced malignant tumors.

深红诺卡菌细胞壁骨架临床疗效观察何桂芬，唐惟瑜，洪小南（上海医科大学附属肿瘤医院200032）摘要目的评价深红诺卡菌细胞壁骨架治疗中、晚期恶性肿瘤的效果。

Based on the analysis of the forces acting on the fine grains in the skeleton pores,a capillary-tube model is introduced to characterize the development of piping in noncohesive soil s.

通过对骨架孔隙中细颗粒的受力分析，建立了描述无粘性土中管涌发生、发展的毛管模型。

Result: The rabbits of osteoporosis group underwent muscle injection till sixth week, the skeleton video pictures of nuclein show that the video pictures of normal group are clear and radioactivity scatters symmetrically and evenly.

结果： 骨质疏松模型组肌肉注射DX第6周，放射性核素骨骼显像显示正常组为骨骼显影清晰，放射性分布对称、均匀。

Actin has been identified in nuclear skeleton, nucleolar matrix and chromosome scaffold of these plants.

结果显示，三种植物细胞核骨架、核仁骨架和染色体骨架上存在肌动蛋白。

The purpose of this study was to explore the mechanisms through which disordered eating might influence the skeleton in nationally or internationally competitive runners. Fifty British national or higher standard middle and long-distance female runners aged under 36 years were recruited; 24 had amenorrhea, nine had oligomenorrhea and the others were eumenorrheic.

文章通过对国内、国外运动员饮食紊乱的研究探求其机制。50名英国国家队队员或36岁以下的中长跑女运动员为研究对象，24人有闭经现象，9人有月经过少现象，其他人存在月经一定程度的紊乱。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。