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Tetraploid veliger were carried out with four chemicals on this scallop in 1998—2000. Tetraploid were induced by inhibition of the polar body and first mitosis with cytochalasin B, colchicine, 6-DMAP and caffeine combined with CB, respectively.

中文摘要:1998—2000年采用细胞松弛素B、秋水仙素、6-二甲基氨基嘌呤(6-DMAP)以及咖啡因等药物抑制虾夷扇贝第一极体(PB1)释放、PB1和第二极体(PB2)释放以及抑制第一次卵裂等方法,诱导虾夷扇贝四倍体。

The results were as follows:(1) The method that HA was treated by ethanol of 2.5x volume for 20 hours turned out to be the most economic and efficient.(2) Zymolysis combined with deproteinization by chloroform was better than deproteinization by chloroform for several times in yield and purity of HA.(3) HA with purity of 71.1 60/o was obtained by the fermentation with cetylpyridinium chloride.

本文对发酵液中HA的分离提取方法进行对比研究,结果表明采用2.5倍体积的乙醇对HA沉淀,作用时间20小时最为经济合理;采用酶解结合氯仿除蛋白较之氯仿除蛋白,HA的产量和纯度均有所提高;经氯代十六烷基吡啶分级分离后,可得纯度为71.16%的HA产品。

Arthroscopic treatment of tibial eminence fracture with suture fixation technique is reliable for fracture reduction, fixation and earl mobilization. Arthroscopy is indicated to diagnose and treat associated knee arthroscopy, re-duce the morbidity associated with arthrotomy, and restore knee unction to the greatest extent when combined with suture fixation techniques.

关节镜下缝线固定治疗前交叉韧带止点撕脱骨折,复位和固定效果好,创伤小,早期进行膝关节康复训练,能够最大程度恢复膝关节功能。

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究,采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓,以光催化降解溴代甲烷为模型反应,系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响,结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段,深入地讨论了超强酸化对TiO〓的改性机理,阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

Methods: On the basis of the stereotactic, 37 patients who suffered affective disorder with compulsions were treated by stereotactic technique combined with 3.0 T Magnetic Resonance, Nervousness Navigation System and Electric Impedance Methods with bilateral amygdaloid nuclei, anterior limb of internal capsule, callosal gyrus, nucleus accumbens septi lesion by radio-frequency thermocoagulation.

在立体定向基础上,应用3.0T高场强核磁共振、神经导航系统和微电极电生理技术进行核团定位,对37例以强迫症状为核心症状情感障碍患者行立体定向杏仁核、内囊前肢、扣带回、伏隔核多靶点联合毁损术。

Methods 26 patients with intermediate or advanced pancreatic head carcinoma underwent cholecystojejunostomy combined with intraoperative radiotherapy with an electron beam on carcinoma from May 1996 to May 1998. The catheter of multifunctional implantable drug delivery system was inserted via gastroduodenal artery for postoperative perfusion chemotherapy.

对26例中晚期胰头癌患者施行了胆肠吻合术,手术中行直线加速器肿瘤区直接照射,同时手术中经胃十二指肠动脉置入埋入式化疗泵,手术后行肿瘤区灌注化疗。

METHODS: A total of 52 cases with choledocholithiasis, hepatolithiasis, carcinoma of the pancreatic head, carcinoma of the choledoch, carcinoma of the gallbladder, hepatoblastoma and choledochocyst were examined by MRCP combined with MRI and the results of MRCP and MRI were compared with those of operation.

对52例胆道梗阻患者,包括胆总管结石、肝内胆管结石、胰头癌、胆管癌、胆囊癌、肝母细胞瘤、胆总管囊肿,术前行MRCP联合MRI检查。

Methods:Fourteen cases were treated with different flaps,including retroauri cular pedicle flap,retroauricular musculocutaneous flap,chondric flap in medial auricle combined with retroauricular flap,and preauricular flap with retroauricu lar flap.All the cases were followed up.

对耳郭部分缺损的14例采用耳后带蒂皮瓣,耳后肌为蒂的皮瓣,耳郭内侧软骨皮瓣、耳后皮瓣联合整复和耳前、耳后皮瓣联合整复等4种不同的手术方法和皮瓣进行一期整复,并术后随访。

With the sedimentary index as a basis, combined with seismic phases and well logging phases, an analysis has recognized that conglomeratic Zheng-408 sand body is a near-origin, faster deposited, fan-delta facies conglomeratic sand bodies, with later low maturation in both composition of structure and weak diagenesis.

以沉积学标志为基础,结合测井相及地震相等方法,分析认为郑408砂砾岩体为近源快速堆积的扇三角洲相砂砾岩体,成分成熟度和结构成熟度都低,成岩作用弱,以原生孔隙为主。

Combined with Corallina Extract, sourced from a mineral-rich red alga with self-defensive properties, our formula helps minimize the appearance of fine lines and wrinkles while defending skin from free radical damage with antioxidants and a high level of broad-spectrum UVA/UVB protection.

蘊含Abyssine657、Venuceane、維他命E及玻尿酸鈉等成分,憑藉天然保護及防禦功能,減退肌膚衰老現象,發揮即時滋潤及修護功能,我们的目的是帮助肌肤使细纹和皱痕减到最小出现,保护肌肤免受自由基损伤,抗氧剂,和一个高水平的广谱UVA/UVB 保护。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力