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Phaeocystis cells are separated experimentally form the water samples collected in Bohai Phaeocystis blooms in 2005.Plate and dilution was used to separate and culture the Phaeocystis cells from the Bohai water samples; Its ecological properties of growth was studied in this research; The break effect of ultrasonic and freezing method was compared in the breaking treatment of Gymnodinium spp. cells of different periods.

该研究选用平板法和稀释法对渤海棕囊藻赤潮期间水样中的微藻进行了分离培养实验;系统研究了裸甲藻在实验室条件下的生态学特征;考察了超声波法和冻融法对不同生长时期裸甲藻细胞的破碎效果;运用高效液相色谱对裸甲藻和链状亚历山大藻细胞提取物进行了麻痹性贝毒的分析检测。

The anatomy relationship of venae hepaticae intermediae and its branches on gallbladder bed were analysed,which could be the reference during the LC.Results:For 112 patients suffered from inatrophic cholecystitis and cholecystolithiasis,whose gallbladders were decoherence directdly from ectoptygma muscular coat close to the gallbladder wall.

结果:对于术前经彩色多普勒超声波检查明确的肝中静脉直接和胆囊床相贴的非萎缩性胆囊炎胆囊结石的102例患者,采用紧靠胆囊壁的浆肌层直接进行剥离;而慢性萎缩性胆囊炎胆囊结石的24例患者,采用胆囊粘膜切除,或者直接开腹手术切除,未发生因损伤胆囊床肝中静脉而大出血。

A type of novel dis-substituted α-arylglycine derivatives was synthesized in high yields and high regioselectivity via the stepwise Friedel-Crafts reaction of phenols with N-tosyl imino ester promoted by TiCl〓.

发现在Mg/MeOH/超声波条件下,能高产率的得到N-Tos裂解后N-Boc保护的α-芳香甘氨酸衍生物,实现了一条简单、实用的合成N-Boc保护的α-芳香甘氨酸衍生物的方法。

The Application of Ultrasonic Wave to Medicative Abortion;2. Optical fiber ultrasonic wave monitoring based on Mach-Zehnder interferometer;3. In this paper,the extraction of grape seed proanthocyanidin using ultrasonic wave was studied.

对葡萄籽中原花青素的超声提取工艺进行了研究,在单因素实验和正交实验的基础上,得出超声波法提取葡萄籽原花青素的最佳工艺条件为:在40℃下,以料液比为30:1的40%乙醇溶液,用120W的超声功率对葡萄籽作用10min。

The scavenging effects of different solvent extracts on hydroxyl radicals produced by the system were compared by phenanthroline oxidation method, and change conditions of scavenging rate of hydroxyl radicals with the prolonging of time were studied.

方法]采用超声波提取法,分别以蒸馏水、50%乙醇和95%乙醇为溶剂,在40℃条件下提取30 min,获得了薄荷的不同溶剂提取物,并以邻二氮菲氧化法比较了不同溶剂提取物时体系产生的羟基自由基的清除作用,并研究随时间延长羟基自由基清除速率的变化情况。

Indoor model test for hydraulic characteristics of common floating vegetation channels in ecological restoration was carried out. Healthy Pistia stratioes linn was planted in the rectangle model river-course in different shapes. The velocity of flow in different situation was measured by three-dimensional acoustic Doppler velocimeter. The change of the rule of velocity was analyzed.

通过在矩形水槽中按不同方式种植个体较小、生长旺盛的大吀进行室内模型试验研究,利用三维超声波多普勒测速仪(acoustic Doppler velocimeter, ADV)分别测量按不同形状种植漂浮植被的矩形水槽中水流的瞬时流场,分析了植被附近区域水流在种植植被前后沿垂线方向的流速分布规律。

Compared to the sample without ultrasonic treatment, it was found that, for AZ31 magnesium melt alloy treated by ultrasonic, the refined grain size and the inproved distribution of grain with its shape of oval-shaped or spherical can be obtained, and the precipitation inside Al matrix was inhibited The Mg17 Al12 precipitates distributed mainly along the grain boundary and hardness was improved remarkedly.

通过对铁合金AZ31进行熔体超声处理发现,处理后试样的晶粒较未进行超声处理的试样有明显细化,分布均匀程度提高,形状呈椭圆状或球状,合金元素Al在晶粒内的析出被抑制,Mg17Al12第二相的析出主要集中于晶界,硬度有明显提高,并且通过试验确定出了最佳处理功率和时间,为超声波在铸造生产中的应用提供了依据。

It was investigated how to increase the yield and purity of tannin, flavone and oligoprocyanidms from the root and stalk of sanguisorba, and the stability of polyphenols from sanguisorba was studied, too. The chemical constitutes of sanguisorba were analyzed, the conditions on extracting tannin, flavone and oligoprocyanidins from sanguisorba by general lixiviating process and ultrasonic wave were optimize. The flavone and oligoprocyanidins were separated from sanguisorba and purified. The stability of polyphenol from sanguisorba was studied and the chemical structure of the products was analyzed.

本论文以地榆根茎为原料,对如何提高其主要活性成分鞣质、黄酮类物质以及低聚原花青素得率和纯度以及地榆多酚的稳定性进行了探讨;主要分析了地榆中化学成分,常规浸提和超声波浸提对地榆根茎中鞣质、黄酮类以及低聚原花青素提取条件的优化,地榆根中黄酮类和低聚原花青素的分离纯化,地榆多酚稳定性能以及产品的初步化学结构分析。

The stabilities of the extract from sanguisorba under different pH, light, heat, ultraviolet ray, oxidant, reducing agent and additive agents were studied. It was indicated the products could widely used in the condition of weak acid or neutral, while they were not stable to heat and light, so they should be used without light and at low temperature. The products had a strong ability to withstand ultraviolet ray. They could easily be oxidized and degraded by oxidant while they were not easily affected by reducing agent and were almost not affected by additive agents. The extract from the stem of sanguisorba was analyzed by UV and FTIR, showing that the structures of the active components were not changed during ultrasonic wave extracting.

研究了pH值、光、热、紫外线、氧化剂、还原剂以及添加剂对地榆提取物稳定性的影响,结果表明地榆提取物适合弱酸或中性条件下使用,使用范围比较广;但对光热稳定性较差,适合在避光低温的环境;具有很强的抗紫外线能力;氧化剂对地榆提取物稳定性影响较大,会加速其降解,还原剂对地榆提取物影响不大;其他添加剂对其稳定性几乎没有影响;并通过UV和FTIR光谱分析,超声波浸提没有对地榆根茎中有效成分的结构发生改变。

We take spectrographic analysis for the chemical composition of tapping and UT for the bonding zone of rolls.

在炉前铁水成分分析中,采用国际先进的光学和化学分析相结合的方法,离心轧辊的结合层质量按国家标准采用超声波检测,具有完备的生产保证体系和先进的产品质量检测手段。

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