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Search Results: 1 - 10 of 90670 matches for " 孙申美 "
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微波处理TiO2柱撑蒙脱石的光催化性能
蒋引珊,,李芳菲,夏茂盛
矿物岩石 , 2007,
Abstract: 采用微波处理方法合成了TiO2结晶体柱撑蒙脱石光催化材料,采用XRD、BET吸附和降解甲基橙实验分析了柱撑蒙脱石的结构、锐钛矿金红石晶相比例、比表面积和光催化性能。结果证实,微波功率与辐照时间等条件将影响材料的结构与性能;与传统加热方式比较,微波处理可获得锐钛矿相含量高的混晶TiO2;该TiO2柱撑蒙脱石具备优异的光催化性能。
天然沸石负载ZnO/SnO_2复合半导体的光催化活性
牟柏林,侯天意,霍丽娟,
硅酸盐学报 , 2005,
Abstract:
右美托咪定对女性患者成功置入喉罩时丙泊酚EC50的影响
,,韩潮,葛圣金△
- , 2015,
Abstract:
高效液相色谱法测定双氧水生产中蒽醌化合物含量
Determination of Anthraquinone in Hydrogen Peroxide Working Solution by High Performance Liquid Chromatography
 [PDF]


Advances in Analytical Chemistry (AAC) , 2016, DOI: 10.12677/AAC.2016.64013
Abstract:
本文建立了高效液相色谱法测定双氧水生产中蒽醌化合物含量的分析方法。该分析方法采用外标法定量,EAQ和H4EAQ的线性相关系数都在0.9999以上,平均加标回收率为98.4%~102.6%,相对标准偏差为0.42%~1.56%(n = 6)。该方法分析速度快,灵敏度高,重现性好,可满足EAQ和H4EAQ的定量分析要求。
In this paper, we developed a reversed-phase high performance liquid chromatography for the quantitative analysis of anthraquinone in hydrogen peroxide working solution. The quantitative analysis was achieved by external standard method. The results showed that the linear correlation coefficients of EAQ and H4EAQ were both above 0.9999, the average recoveries of the two compounds were 98.4% - 102.6% and the relative standard deviations were 0.42% - 1.56% (n = 6). This method is rapid, sensitive and reproducible, and each index of the method is suitable for test requirements of EAQ and H4EAQ.
粉碎方式对TiO2粉体的影响
王瑛玮, 蒋引珊, 侯天意, 张军, 张延军,
吉林大学学报(工学版) , 2005,
Abstract: 为了研究研磨作用方式对粉碎样品的粒径和晶型转变的影响,以汽车颜料TiO2为原料,分别用离心环隙式磨机和QM-BP型行星式球磨机对质量分数为30%的TiO2进行了湿法超细粉碎试验。XRD分析结果表明:离心环隙式磨机粉磨6h,近90%的锐钛矿型TiO2转变成金红石型TiO2,且粒径达到22.9nm。而行星球磨机粉磨20h,其粒径仅达到86.5nm,且无晶型转变。研究结果表明:新型机的特殊研磨方式不仅能够获得纳米级的颗粒,而且通过机械力化学效应使TiO2的相变温度从900℃降到100℃以下。
水旱交叉选育抗旱高产小麦新品种的研究
,李岩华,张俊灵,王瑞生,王国红,淑珍
华北农学报 , 1999, DOI: 10.3321/j.issn:1000-7091.1999.04.002
Abstract: 在抗旱高产小麦新品种选育中,采用渐近杂交法使目标性状得到有效的组合,采用水、旱地交叉选育法,为杂种后代基因型的潜在遗传特性的充分表达和选择提供了条件,使自然选择、人工选择和定向培育三者紧密地结合在一起,加大了选择压力和频率,提高了选种质量和效率,为选育抗旱、高产、稳产小麦品种提供了一种新方法。
香溪河流域不同介质中碳、氮、磷的分布特征及相关性研究
婷婷,唐涛,恒伦,张长群,,李斌,蔡庆华
长江流域资源与环境 , 2015, DOI: 10.11870/cjlyzyyhj201505019
Abstract: 为了解香溪河流域碳、氮、磷的分布情况及水、陆生态系统中这些生源要素间的相互关系,对流域内河岸带土壤、河流水体及沉积物中总有机碳(TOC)、总氮(TN)、总磷(TP)含量进行调查,分析它们在流域内的分布特点,探讨各要素在3种介质间的相关性及随河流级别的变化规律。研究发现,超过60%的样点土壤中TOC、TN含量处于"较丰富"或"丰富"等级,耕地附近样点的TOC、TN和磷矿区附近样点的TP普遍偏高。河流水体及沉积物中各要素的含量都与土壤中的含量紧密相关,但水、陆介质间TP的相关性较TOC、TN强。低级别河流样点土壤中TOC、TN、C/P、N/P值和沉积物中C/P及N/P值整体较高级别河流样点高。结果表明:以磷矿开发和农业施肥为代表的人类活动,对香溪河流域内生源要素的含量及分布产生了显著影响;水体中P元素含量与陆源关系最强,在水体污染控制中应予以重视。
数值模拟人双耳感受体位变化的机制
沈双,郑庆印,秀珍,,刘迎曦,刘文龙,王文君,王慧
- , 2017,
Abstract: 目的 探究双耳3对半规管在感受有角运动时力学行为表达的规律。方法 采用有限元法数值模拟一例健康人头部水平正弦转动时左、右耳3对半规管的力学响应。结果 各平衡感受器嵴顶局部位移响应随着嵴顶位置改变而变化,但是3对嵴顶的体积应变响应是规律的,每对嵴顶均以与激励相同的频率等幅度膨胀或收缩。水平、前、后半规管3个嵴顶的体积应变幅值绝对值的比值恒定,近似为1.00︰0.80︰1.72。此外,水平半规管和前半规管嵴顶体积应变响应的相位相同,且与头转动速度的相位约相差14.4°,与后半规管嵴顶体积应变响应的相位相差180°。结论 嵴顶体积应变可以较好地表征3对半规管感受有角运动的规律,其幅值、频率和相位可以分别反映刺激角速度的幅值、频率和相位,这一规律为进一步建立前庭眼反射的数量依存关系奠定基础,同时为眼震检查定量评估前庭功能提供理论依据。
Objective To study the general mechanical behavior pattern of sensing angular velocity by 3 pairs of human semicircular canals. Methods Sinusoidal head rotation of a healthy subject was simulated by finite element method to analyze the dynamic responses in the above 3 pairs of canals in the left and right inner ear. Results Compared with the complicated node displacement distribution, the volumetric strain distribution of cupula was regular. Specifically, each pair of cupulae expanded or contracted within the same amplitude with the same response frequency to the angular velocity. The ratio of absolute volumetric strain among the horizontal semicircular canal cupula (HC cupula), the anterior semicircular canal cupula (AC cupula), and the posterior semicircular canal cupula (PC cupula), was approximately 1.00︰0.80︰1.72, which kept constant. In addition, the volumetric strain of HC cupula was in phase with that of AC cupula, but showing 14.4° out of phase with the angular velocity, and 180° out of phase with that of PC cupula. Conclusions The volumetric strain of cupula can preferably characterize the directional coding function of semicircular canal, and the amplitude, frequency and phase of the cupular volumetric strain can encode those of the stimulated angular velocity, respectively. These results will lay the foundation for establishing quantitative relationship of vestibulo-ocular reflex, and provide theoretical references for quantitative assessment for vestibular function by nystagmus examination.
行为表征水平与心理距离间不具自动化联接特性:来自图片-词汇stroop范式的实验证据
张锋,
心理学报 , 2014,
Abstract: ?基于建构水平理论基本假设的推论,采用图片-词汇stroop范式,通过两组实验,探讨了行为表征水平与心理距离间是否具有自动化联接特性的问题。实验结果一致表明:(1)无论是以词性判断速度为指标(实验1),还是以词汇判断速度为指标(实验2),对不同建构水平行为评价词汇的加工均不受词汇所在空间距离位置的影响,说明行为表征水平的心理距离效应不具有自动化加工的特性,而可能是意识性控制加工的产物;(2)无论是对于特质性词汇,还是对于行动性词汇,相对于近距离位置,当其呈现于远距离位置时,被试对其词性(实验1)和词汇(实验2)加工的速度均更快,说明空间距离的延伸可促进对行为评价性词汇的加工绩效。
一例常年性变应性鼻炎的中药干预的报导
A Report of Chinese Crude Drug Intervention about Perennial Allergic Rhinitis
 [PDF]

, 书臣
Asian Case Reports in Otolaryngology (ACRO) , 2013, DOI: 10.12677/acro.2013.11001
Abstract:

常年性变应性鼻炎属于难治愈的疾病之一。我们采用中药熏蒸的方法治疗常年性变应性鼻炎,收到较好的临床疗效。通过对一例病例的分析来探讨中药熏蒸治疗变应性鼻炎的理论基础。
Perennial allergic rhinitis is one of the diseases which are difficult to cure. We get excellent clinical efficacy using the Herbal fumigation treatment. According to a report, we analyse the theoretical basis of Herbal fumigation treatment treating perennial allergic rhinitis.

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