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Electrochemical oscillation of lead electrode in sulfuric acid has been explored with in-situ ellipsometry.Effects of improvement of electrodes properties are affected by increase or decrease of surface temperature of the samples badly during ion implantation. Some theories and methods on substance diffusion transfer have been applied to calorifics to obtain mathematical relation between the surface temperature on the samples and operation time during ion implantation.
掠射式椭圆偏振方法是本论文提出的一种全新的研究方法,为验证这种现场研究方法的可行性,本论文选择了几个用其它方法研究较为成熟的电化学体系并结合本论文研究的化学电源体系,以掠射式椭圆偏振技术进行研究,提出了改良镍电极、锌电极、铝电极和铜电极性能的具体措施或者理解这些电极表面性质和涉及它们的电极过程的实验依据,为使用这些电极的化学电源性能的提高奠定了基础。
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Methods We retrospectively compared 45 cases who were retained and sutured capsula articularis during THA through posterior approach from January 2006 to May 2007 with 57 cases routinely resected capsula articularis during 2004 to 2005 on the rate of dearticulation after operation.
将2006年1月年5月的45例后路THA患者术中行关节囊保留修复,与2004年~2005年所行的后路常规行关节囊切除的THA患者57例在术后脱位发生率方面进行回顾性比较分析。
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Slight caramelization occurs during the casting of KN-Dextrose, with decomposition occurring quite readily during the heating phase.
轻微caramelization过程中发生的铸造千牛-葡萄糖,分解发生相当容易在加热阶段。
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During early middle Jurassic period, Quemocuo formation in NQB was offshore lake deposition with marine feature, in SQB was shelf deposition, which indicted that an intense rifting and sea level rising with more large range, and consequently, eroding area was shrunk and deposition area was expanded.4. According to the result of stratigraphic surface features, division and correlation, and the paleographic characteristic, Qiangtang Basin during late Triassic -early middle Jurassic period could be divided into two basin developing stages with difficult tectonic nature, remnent epicontinental basin stage in Carian -early Norian of late Triassic and rifting basin stage in middle Norian of late Triassic - early middle Jurassic period respectively.
雀莫错组在羌北盆地为近海湖泊沉积,更具海相色彩:南羌塘主要为外陆棚沉积,反映羌塘盆地再次发生较强烈的裂陷作用和较大幅度的海平面上升,形成陆源剥蚀区缩小,沉积覆盖面增大的古地理面貌。4、根据地层界面特征、地层划分与对比结果和岩相古地理演化特征可将晚三叠世—中侏罗世早期羌塘盆地划分为两个不同构造性质的盆地发展时期,分别为晚三叠世卡尼期—若利早期的残留内陆表海沉积盆地发展与消亡时期和晚三叠世若利期中晚期—中侏罗世早期的裂陷盆地的形成与发展时期。
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Heddewigii, Dianthus barbatus L, Dianthus latifolius, Dianthus caryophyllus and Dianthus chinensis var. liaotungensis, with relatively high fructification rates and certain traffic tolerance, showed little difference in ecological adaptability and exhibited an average seedling height of 20cm and a mean crown size of 23cm, and pruning during the late growth period could obviously promote flowering and reduce the seedling height by 3cm. While Dianthus barbatus L. and Dianthus phlox subulata, with relatively low fructification rates and higher traffic tolerance, had an unobvious difference in ecological adaptability, which present an average seedling height of 14cm and a mean crown size of 36cm, and pruning during the late growth period could promote flowering to some extent and reduce the seedling height by 2cm.
其中,大红石竹、锦团石竹、五彩石竹、五寸石竹、浓香石竹、重瓣石竹品种间差异小,平均苗高20cm,冠幅23cm,结实率相对高,有一定耐践踏能力,在生长后期进行修剪能很好的促进开花并降低株高3cm;常夏石竹和美国地被石竹品种间差异小,平均苗高14cm,冠幅36cm,结实率低,耐践踏能力稍强,在生长后期进行修剪能较好地促进开花并降低株高2cm。
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The reflection of decompression was observed during the carotid sinus chirapsia before cervical plexus block, while not during the carotid sinus chirapsia or stimulating vagus after cervical plexus block.
颈丛神经阻滞麻醉前按摩颈动脉窦可引起明显的减压反射,而阻滞后按摩颈动脉窦或刺激迷走神经均未引起明显的血压及心率变化。
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Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.
阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时,再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节;实验中选用CaCl2作为电解熔盐,并对其进行预处理(100℃,保温1小时; 300℃,保温2小时);经热力学计算,还原钛氧化物的氧分压至少要低于5.11×10-7Pa,结合电解过程中所用熔盐CaCl2有极强的吸水性的特点,电解装置应有较高的密封性,自行设计了一套密封性可靠的电解装置,便于实验过程中熔盐预处理和氧分压的控制;通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时,电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃,实验结果表明电解时间与TiO2质量密切相关,质量越大需要电解的时间越长;通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤,可减少熔盐及其它杂质对电解产物检测结果的影响;最后,通过循环伏安法、计时电流法对电解机理的研究,确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。
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No structural change was found in the 4th group. Conclusion The test prove that cholestasis would occure during TPN and become serious with time prolonging. Integrity and function of gallbladder-wall tissue cell could be defended and sustained by applying GLN, but there is no direct preventing action. There is apparent cholecy stokinetic and cholagogic fundations by applying CCK. But CCK would lose its function if gallbladder-wall was damaged. The test prove that TPN+GLN+CCK is the best way to prevent cholestasis during TPN.
TPN时间越长,胆汁淤积越重; GLN虽无直接收缩胆囊作用,但它可保护胆囊壁组织结构完整,而CCK虽有收缩胆囊、减轻胆汁瘀积作用,但晚期当胆囊壁组织结构破坏时,其作用减弱;联合应用GLN和CCK可能是预防TPN期间胆汁瘀积的一种方法。
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According to the geochemical data, the formation of mantle peridotite might be: during the spreading of ocean floor, the MOR mantle underwent variable degrees of partial melting and formed the depleted mantle peridotite with podiform chromitite; during the spreading of ocean basin, intra-ocean subduction happened, REE and LILE rich fluids containing water derived from the subduction slab migrated upwards and metasomatism happened to peridotite relic.
康金拉矿区的地幔橄榄岩的地球化学特征反映了其形成过程的复杂性,表现为:洋底扩张期间,扩张脊下的MOR型地幔的经历了不同程度的部分熔融,形成了亏损地幔橄榄岩,该地幔橄榄岩中赋存了来自深部的豆荚状铬铁矿。
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The variation to vitellin polypeptide was studied by SDS-PAGE during embryogenic and postembryonic development to Chrysopa septempunctata. The results indicated that vitellin was degradated constantly during embryonic development, and the bands of vitellin couldn't be detected in the 4th day of ovum development.
用SDS-PAGE研究了大草蛉胚胎发育和胚后发育过程中卵黄蛋白多肽的变化动态,结果表明,卵黄蛋白在胚胎发育过程中被不断降解,在卵发育的第4天已经基本上看不到卵黄蛋白的条带。
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- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。