检索结果-南通市图书馆

碱激发胶凝材料:早期成核、化学相演变和体系性能（英文）

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

硅酸盐学报 2015年第10期43卷 1449-1457页

作者： Kwesi SAGOE-crentsil Pre De SILVA CSIRO Manufacturing Flagship Victoria Australia School of Science Australian Catholic University North Sydney Australia

近些年,通过碱激发硅铝酸质材料形成聚合物水泥基材料的研究受到了广泛关注。由于在此聚合物胶凝体系中,硅铝质原料存在多样性,包括粉煤灰、矿渣、煅烧高岭石等,因此其原料化学性质在动力学和固相演变过程中起到非常重要的作用,并决定... 详细信息

近些年,通过碱激发硅铝酸质材料形成聚合物水泥基材料的研究受到了广泛关注。由于在此聚合物胶凝体系中,硅铝质原料存在多样性,包括粉煤灰、矿渣、煅烧高岭石等,因此其原料化学性质在动力学和固相演变过程中起到非常重要的作用,并决定了最终产品的化学和物理性质。分析了原料化学组成对从溶解到最终水化产物性能的碱激发全过程的影响。并使用了包括X射线同步衍射分析在内的一系列分析技术对多种原料的无定形和沸石状结构进行了表征。研究了具有特定无定形SiO_2/Al_2O_3比的钠锅硅酸盐沸石在Al_2O_3-SiO_2-H_2O凝胶中的结晶趋势,并基于可识别的三元相图中的组成结构,研究了钙离子和剩余阳离子种类的主要影响。讨论了不同体系的相组成和化学成分、物相转变、微观结构变化及其长期强度发展和耐化学性的关系。

关键词：混凝耐久性模拟服役寿命验证

The effect of equity structure and influence factors on China’s banking cyclical behavior and monetary policy

在线全文

学校读者我要写书评

暂无评论

China Finance and Economic Review 2017年第3期6卷 42-61页

作者： crentsil Kofi Agyekum Beijing university of technology China

Several years ago,there were crises on mortgage resulted in a serious thread on financial systems in the United States and other developed and developing ***,some scholars are of the view that the procyclical nature of the bank lead to this serious *** this study,we focus on China’s bank lending behavior whether it falls within the cyclicality of the banking *** study realizes that credit distributions are still the managerial way of for transferring government monetary *** is not however the actual reasons behind the China’s bank counter-cyclical ***-owned financial firms within higher ownership are of no doubt of likely to be counter *** school of thought are with the view that compared to developed countries,state-owned banks play a major decisions in other developing countries such as Brazil,and they believe that the well performances of this nations are adhering to the financial crises that are highly related to the state-owned *** example in China,commercial banks are the main embodiment of China’s financial *** is believed that most of these banks have very strong support by the central government and that makes clients pay more attention to their well-being thus implementing the states macroeconomic policies and resisting the financial *** study based on other existing researches will take the government monetary policy and commercial banks equity structure into a frame work and under search how they influence the cyclical China’s commercial bank lending behavior and project other possible effects for regulatory bodies to take it into account when making a decision.

关键词： monetary policy shareholder structure lending behavior counter-cyclicality

地质聚合物合成中铝酸盐组分的作用机制(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

硅酸盐学报 2005年第3期33卷 276-280页

作者：翁履谦 SAGOE-crentsil Kwesi 宋申华张化宇哈尔滨工业大学深圳研究生院材料科学与工程系广东深圳518055 CMIT澳大利亚国家科学与工程研究院

在对铝、硅酸盐离子团中离子的部分电荷计算的基础上,研究了铝组分在地质聚合物合成中的作用机制,并通过实验进行了初步验证。研究表明:铝组分对地质聚合物的合成中缩聚反应有显著的促进作用,因而在合成地质聚合物时原料中铝组分的溶... 详细信息

在对铝、硅酸盐离子团中离子的部分电荷计算的基础上,研究了铝组分在地质聚合物合成中的作用机制,并通过实验进行了初步验证。研究表明:铝组分对地质聚合物的合成中缩聚反应有显著的促进作用,因而在合成地质聚合物时原料中铝组分的溶解性至关重要。实验结果表明:由具有较小颗粒度的煅烧高岭土为原料合成的地质聚合物具有较短的固化时间,更均匀的显微结构和更高的机械强度。如由较粗的煅烧高岭土为原料合成的地质聚合物的抗压强度为54MPa,而由较细的煅烧高岭土为原料合成的地质聚合物的抗压强度则能达到 74MPa。

关键词：地质聚合物合成机理部分电荷分布

Successful Anaesthetic Management of Caesarean Section: An Experience on a Patient with Myasthenia Gravis and Difficult Airway

在线全文

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2019年第6期9卷 789-793页

作者： Akwasi Antwi-Kusi William Addison Elizabeth Esi crentsil Anthony Yeboah Rex Mawuli Kwadjo Djokoto Department of Anaesthesiology Komfo Anokye Teaching Hospital Kumasi Ghana Department of Obstetrics and Gynaecology Komfo Anokye Teaching Hospital Kumasi Ghana

The anaesthetic management of the pregnant woman with myasthenia gravis (MG) is very challenging to the anaesthesiologist. This situation becomes exaggerated in emergency settings in a low resource area, especially when attending anesthesiologists for the first time took care of her. Here, we present a case that illustrates this situation. A G3 P2 pregnant woman presented for an emergency caesarean section (CS) due to premature rupture of the membranes. The patient had been misinformed by her neurophysician not to undergo general anaesthesia at CS. She had no motor weakness and no bulbar symtoms. The only abnormal finding was a stiff neck and a Mallampati #2 score, which predicted a difficult airway. Spinal anaesthesia was not successful after several attempts. General anaesthesia was considered but again intubation was not successful. We performed anesthesia with a second generation laryngeal mask airway with successful CS. Pregnant women with MG require personalised care from a multidisciplinary team. While regional anaesthesia is reported to be the better choice in CS for women with MG, regional anesthesia is not always possible. Anesthesia should be chosen in a patient-by-patient manner. The present case illustrates such conditions, of which description may be useful for anesthesiologists and obstetricians.

关键词： Myasthenia Gravis Failed Spinal Difficult Intubation Second Generation Laryngeal Mask Airway

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

建筑混合材水泥在回收建筑废渣中的应用

国外建材科技 2000年第2期21卷 33-34,37页

作者： K.Sagoe-crentsil 管斌君武汉工业大学材料学院 430070

随着建筑部门利用可回收资源生产承重建筑制品这一需求的不断增长,水泥制品中利用回收混凝土集料(RCA)的开发研究方面进展很大。另外,建筑业已响应正出现的生态可持续发展这一趋势,掺用水泥添加材料如粉煤灰、粒化高炉矿渣、硅灰和各种... 详细信息

随着建筑部门利用可回收资源生产承重建筑制品这一需求的不断增长,水泥制品中利用回收混凝土集料(RCA)的开发研究方面进展很大。另外,建筑业已响应正出现的生态可持续发展这一趋势,掺用水泥添加材料如粉煤灰、粒化高炉矿渣、硅灰和各种火山灰材料。这种双掺或三掺混合料,若养护适当则具有良好的工作性和渗透性,更低的温度差。

关键词：回收混凝土集料粉煤灰 RCA混凝土建筑混合材

含硅锰(SiMn)矿渣胶凝材料的早期水泥性能

在线全文

学校读者我要写书评

暂无评论

国外建材科技 2000年第3期21卷 19-22页

作者：管斌君 K.Sagoe-crentsil 武汉理工大学材料学院(西院) 430070

硅锰矿渣主要来自铁锰合金和硅锰合金等铁合金生产的高温冶炼过程。虽然近年来对各种非铁矿渣的水泥性能进行了广泛的研究,但所得研究数据仅限于磨细玻璃态硅锰矿渣的火山灰性能。本文所涉及的矿渣的显著特征是MnO含量高,一般都超过8％... 详细信息

硅锰矿渣主要来自铁锰合金和硅锰合金等铁合金生产的高温冶炼过程。虽然近年来对各种非铁矿渣的水泥性能进行了广泛的研究,但所得研究数据仅限于磨细玻璃态硅锰矿渣的火山灰性能。本文所涉及的矿渣的显著特征是MnO含量高,一般都超过8％。据有关报道镁黄长石相是该矿渣体系的主要玻璃相。虽然人们采用包含MnO的不同化学反应式来描述矿渣的活性指数。

关键词：硅锰矿渣胶凝材料水泥性能

Treating Tropical Pyomyositis (Myositis Tropicans) Using Primary Closure and Vacuum Drainage

在线全文

学校读者我要写书评

暂无评论

Surgical Science 2014年第8期5卷 333-337页

作者： Joseph Yorke Pius Agbenorku Joseph Akpaloo Charles Appiah Papa Kwesi Sansomir Fiifi-Yankson Michael Adinku Ewura Adjoa Ahenfoa Ben-crentsil Dennis Afful-Yorke Department of Surgery School of Medical Sciences College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana Directorate of Surgery Komfo Anokye Teaching Hospital Kumasi Ghana School of Medical Sciences College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana

Introduction: Tropical pyomyositis refers to bacterial infection that affects skeletal muscles causing single or multiple abscesses filled with pus. Aim: The study seeks to find out the effectiveness in the use of primary closure and vacuum drainage in the treatment of pyomyositis. Materials and Methods: The study was conducted between March 1, 2007 and February 28, 2014 at the Komfo Anokye Teaching Hospital, Kumasi, Ghana on patients with pyomyositis. Results: Seventy-seven patients comprising 58 (75.32%) males and 19 (24.68%) females were included in the study with their ages ranging from 15 to 68 years. There was improvement in patient’s healing outcome. Conclusion: Primary wound closure and vacuum drainage provides patients with much satisfaction and better outcome as well and it is also effective.

关键词： Pyomyositis Primary Closure Negative Wound Pressure Therapy (NWPT) Satisfaction Cost Outcome