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Search Results: 1 - 10 of 171805 matches for " 赵建宏 "
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公共场所卫生监督文书制作存在的问题及对策
,曹敏
中国公共卫生 , 1997,
Abstract: ?为了正确使用全国统一的卫生监督文书,加强卫生监督执法工作,加大监督执法的力度,提高卫生监督执法人员的素质及卫生监督文书制作的质量,我们对全省各级卫生防疫站制作的现场卫生监督笔录、卫生监督意见书和卫生行政处罚决定书的质量进行了考核。
NaX/NaF催化剂的制备及其应用于催化合成脱氢乙酸
Preparation of NaX/NaF Solid Alkaline Catalyst and Synthesis of Dehydroacetic Acid Catalyzed by Solid Base
 [PDF]

王鹏, 何丹丹, 韩兵营, 宋成盈, 王留成, , 王建设
Hans Journal of Chemical Engineering and Technology (HJCET) , 2013, DOI: 10.12677/HJCET.2013.31005
Abstract: 以NaX分子筛为载体,负载前驱体NaF,采用浸渍法制备环境友好负载型固体碱NaF/NaX催化剂,并用于催化乙酰乙酸乙酯合成脱氢乙酸。探讨了NaF负载量、煅烧温度、煅烧时间对催化剂活性的影响;考查了催化剂用量、反应温度和反应时间对脱氢乙酸收率的影响。实验结果表明,固体碱催化剂NaF/NaX的最佳制备条件为NaF负载量20%,600℃下煅烧7 h;最适的脱氢乙酸合成条件为催化剂用量0.02%(以乙酰乙酸乙酯质量计),反应温度210℃,反应时间7 h,该条件下脱氢乙酸产率达81%。
The solid base catalyst NaF/NaX was prepared by impregnation. Dehydroacetic acid was synthesized from ethylacetoacetate in those friendly environmental solid base. Effects of the calcination temperature, calcination time, loading amount, mass fraction of catalyst, reaction temperature and time on the reaction were studied. The results showed that, the optimal catalyst were prepared under the conditions of loading amount 20%, calcination temperature 600°C and calcination time 7 h. Under the conditions of the mass fraction of catalyst 0.02%, reaction temperature 210°C and reaction time 7 h, the yield of dehydroacetic acid reached 81%.
数字技术对科技期刊出版的影响及发展对策
,
中国科技期刊研究 , 2011,
Abstract: 网络为科技期刊的发展带来机遇和挑战,期刊数字化已成为我国科技期刊出版界关注的焦点。文章论述了数字技术对科技期刊出版的影响。数字技术为缩短出版周期提供可能,是发展电子版期刊的必要条件,是文献检索自动化的基础;数字技术支持科技期刊的网络传输和出版,并对科技期刊编辑提出新的要求。分析了促进科技期刊数字化出版发展的对策,即政府部门要及时进行规划引导,给予政策支持;实现科技期刊的网上出版,应及时调整发展战略,正确处理好纸质版与网络版的比例关系;要借助数据库网络运营商,拓展出版平台;应加速期刊网站建设;推行国际化的技术规范,并规范数据核查以推动科技期刊的数字化发展。
GC-MS法测定苯胺法合成2-巯基苯并噻唑的废树脂
Determination of Composition in Spent Resins from the Aniline Process Adopted to the Synthesis 2-Mercaptobenzothiazole by Gas Chromatography-Mass Spectrometry
 [PDF]

张家丽, 张梅梅, 张圣光, , 程相林, 王留成
Advances in Analytical Chemistry (AAC) , 2015, DOI: 10.12677/AAC.2015.51001
Abstract:
采用气相色谱–质谱法(GC-MS)对工业苯胺法合成2-巯基苯并噻唑(促进剂M)的副产废树脂进行了定性、定量测定。废树脂经四氢呋喃溶解后,采用GC-MS法测定,样品中分离的各种成分用NIST08谱库进行对照检索,采用面积归一法,计算出各化合物成分的相对含量。共鉴定了废树脂中的7种有机化合物,其中2-巯基苯并噻唑(M)和苯并噻唑(BT)的相对含量最高,分别为29.2%、31.1%。苯胺含量为6.2%,2,6-二叔丁基-4-甲基苯酚含量为17.4%,苯并噻唑衍生物含量共为14.2%,所鉴定的7种有机化合物峰面积之和占到总峰面积的98.1%。
The relative content and constituents of spent resins from the aniline process adopted to the syn-thesis 2-mercaptobenzothiazole (the Accelerator M) were analyzed by gas chromatography-mass spectrometry (GC-MS). After being dissolved in tetrahydrofuran, spent resins were measured by GC-MS and identified by NIST08. The relative content of each component was determined by area normalization. Total 7 constituents were identified in spent resins, wherein the relative contents of 2-mercaptobenzothiazole (M) and benzothiazole (BT) were the highest, accounting for 29.2% and 31.1% respectively. The contents of aniline, 2,6-Di-tert-butyl-4-methylphenol and benzothiazole derivative were 6.2%, 17.4% and 14.2%, taking 98.1% of the total peak area.
损伤控制外科理论在重型颅脑损伤伴多发伤患者救治中的应用
Application of Damage Control Surgery in Severe Traumatic Brain Injury Combined with Multiple Injuries
 [PDF]

王向东, 任新亮, 王彦, 陈芳,, 志强
Asian Case Reports in Emergency Medicine (ACREM) , 2015, DOI: 10.12677/ACREM.2015.31001
Abstract:

目的:探讨损伤控制外科(DCS)理念在重型颅脑损伤伴多发伤患者救治中的应用。方法:回顾性分析采用DCS理念救治的69例重型颅脑损伤伴多发伤患者的临床资料,总结应用DCS理念救治重型颅脑损伤伴多发伤患者的临床效果。结果:本组69例患者,随访6个月,按格拉斯哥结局量表(GOS)分级:恢复良好31例;中度残疾8例;重度残疾19例;植物状态5例;死亡6例。结论:应用DCS理念针对重型颅脑损伤伴多发伤患者及时给予救治,明显提高救治成功率,降低死亡率。
Objective: To discuss the application of damage control surgery (DCS) in the treatment of severe traumatic brain injury combined with multiple injuries. Methods: The clinical data of 69 severe traumatic brain injury combined with multiple injuries patients who were treated with DCS were reviewed retrospectively. The concept and complications of DCS in treatment of severe traumatic brain injury combined with multiple injuries patients are summarized. Results: There are 69 patients, who’ve been followed up 6 months. According to Glasgow outcome score method, 31 cases recovered well, 8 cases moderate disability, 19 cases severe disability, 4 cases vegetative state, 6 cases death. Conclusions: Application of damage control surgery in severe traumatic brain injury combined with multiple injuries can improve the rescue efficiency and decrease the mortality.

神经节苷脂对脑外伤大鼠大脑皮质Nogo-A表达的影响
Influence of GM1 on Nogo-A Expression in Cerebral Cortex for the Brain Trauma Rats
 [PDF]

王向东, 任新亮, 郭铁柱, 王彦,, 志强
International Journal of Psychiatry and Neurology (IJPN) , 2015, DOI: 10.12677/IJPN.2015.42002
Abstract:
目的:观察神经节苷脂(GM1)对脑外伤大鼠大脑皮质中Nogo-A表达的影响,探讨GM1促进脑外伤神经修复的可能机制。方法:采用SPF级SD大鼠100只,随机分为空白对照组(n = 10)、假手术组(n = 20)、损伤后生理盐水组(n = 35)和损伤后GM1组(n = 35)。通过HE染色观察各组大鼠脑组织不同时间点病理情况;用免疫组化的方法观察Nogo-A阳性细胞数量。结果:通过免疫组化的方法观察损伤后生理盐水组:Nogo-A阳性细胞在造模24时即明显升高,至72 h时仍呈升高的趋势;GMl组:Nogo-A的阳性细胞数早期逐渐升高,至24 h时数量最多,之后开始减少,应用GMl后,Nogo-A的阳性细胞数量的增加较为延后。结论:Nogo-A在颅脑损伤后其阳性细胞数量显著增高,抑制中枢神经损伤后的再生,神经节苷脂GM1在脑损伤后可部分抑制Nogo-A的表达,机制可能通过稳定细胞膜、减轻细胞水肿,从而发挥对实验性脑外伤大鼠的神经保护作用。
Objective: To observe the effects of the ganglioside (GM1) on Nogo-A expression in cerebral cortex for the rats which have brain trauma, to explore the possible mechanisms of GMl promoting the nerve repair of traumatic brain injury. Methods: SPF SD rats of 100 were randomly divided into four groups: no operation group (n = 10), sham operation group (n = 20), saline model group (n=35), GMI group (n=35). ELISA was used to detect Nogo-A expression in parietal cerebral cortex at different time. Results: By immunohistochemical method we observed in model group: the number Nogo-A positive cells increased at 24 hours in the model, and still slightly increased till 72 hours; in group GM1: the number Nogo-A of positive cells increased gradually in the early time, and became largest at24 h, then started to decrease, the application of GM1, after brain trauma, the increase in the number of Nogo-A positive cells was more delayed. Conclusions: the number of Nogo-A positive cells increased significantly after brain trauma, and inhibited the CNS regeneration after injury. After brain trauma, the ganglioside GM1 partially inhibited Nogo-A expression, and the mechanism might be through the stability of cell membrane, which played its neuroprotection roles in experimental traumatic brain injury in rats.

Mo―Fe/SiO2催化剂中钼流失动力学和流失机理的研究
,田慧敏
分子催化 , 1995,
Abstract:
热机碎岩钻进工艺中钻进规程参数的理论分析
,孙友
地质与勘探 , 2001,
Abstract: 通过建立数学模型,对热机钻进中钻进规程参数与机械钻速的变化规律进行了理论分析,并推导出了它们之间相互影响的关系式,对热机钻进中最优规程参数的确定具有重要指导意义。
平面电磁波在等离子体中的吸收衰减
,
北京理工大学学报 , 2004,
Abstract: 研究等离子体在隐身技术中的应用.采用垂直入射线极化平面电磁波斜入射到具有金属衬底的等离子体层的模型,利用W.K.B解,推导出电磁波能量衰减与电磁波频率和等离子体密度的关系式.在此基础上,对不同入射角的电磁波在等离子体密度为均匀分布、线性分布和指数分布情况下传播的能量衰减进行了数值计算.结果表明,电磁波衰减随等离子体密度以及电磁波入射角增加而增加;在3种分布情况下电磁波能量衰减规律是相似的.
界面对聚丙烯/碳酸钙复合材料光氧老化的影响
,杨睿,
高分子学报 , 2014, DOI: 10.11777/j.issn1000-3304.2014.14113
Abstract: 以聚丙烯(PP)/碳酸钙为研究对象,以复合材料界面为着眼点,探讨了不同的填料粒径和表面组成对复合材料光氧老化的影响,并提出了相关机理.首先,文中认为聚合物/无机填料界面面积与界面化学组成是影响老化速率的关键因素.聚合物与碳酸钙的总界面面积的增大会加速PP的光氧老化,不同偶联剂处理会改变碳酸钙的表面化学特性进而对PP老化产生促进或抑制.在此基础上提出了基于界面的老化反应速率概念及相应模型.其次,在老化领域采用了"界面放大"的实验方案,验证了碳酸钙对PP的老化促进很大程度上来源于碳酸钙表面的化学组成.此外,研究发现采用表面处理剂钛酸酯改性的碳酸钙能大大促进PP的老化,且表现为钛酸酯与碳酸钙的协同效果.
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