Application of multimedia and network in teaching structure chemistry 多媒體與網絡技術在結構化學教學中的運用
The state key laboratory of structure chemistry , fujian institute of research on the structure of matter , chinese academy of sciences , fuzhou , 350002 , p . r . china 陳久桐中國科學院福建物質結構研究所結構化學國家重點實驗室,福州, 350002
The software deal with the animate demonstration of abstract concept and process , protracting image , simulating of apparatus and experiment , and so on 該軟件涉及結構化學中抽象概念和過程的動畫演示,圖形繪制,儀器和實驗模擬等方面。
The second position is available to the candidate with a ph . d . degree major in one of the fields , such as microbiology , pharmacology , organic chemistry , structural chemistry , genetic engineering 第2個項目候選人:需要具備微生物學、藥學、有機化學、結構化學、基因工程等學科專業背景中的至少一種。
The thesis is organized as follows . in the first chapter , we introduce the needed basic concepts and terms in graph theory , organic chemistry , and the definition of wiener index 在論文的第一章里,我們介紹了一些圖論、有機化學、結構化學、 wiener數中的基本概念、基本術語以及相關知識,最后介紹了本論文的主要結果。
On the base analysis of curriculum and starting from the cultivation of innovative thinking modes , to strengthen the structural chemistry curriculum for cultivation and process of undergraduate cultivation of innovative thinking modes 在分析結構化學課程特點的基礎上,以創新思維模式的培育為出發點,強化結構化學教學對大學生創新思維模式的培育過程。
We research the causes of concrete cracking , develop the high performance anti - cracking additive , optimize the concrete mix and construction techniques , increase the stability of concrete volume by shrinkage compensation , enhance splitting tensile strength , and can meet demand of high workability of fresh concrete . . in the study , a thorough investigation of this problem is made from all points of view , with the aid of various modern measurement & testing technology and different theories & methods in surface physical chemistry , structural chemistry , solid - state chemistry , composite materials , fracture mechanics , etc . our research results have shown that the various shrinkage of concrete cause concrete cracking in building engineering , such as autogenous shrinkage , dry shrinkage , temperature shrinkage , plastic shrinkage , carbonized shrinkage , etc 目前,解決混凝土開裂的方法是綜合的,我們調查研究了混凝土開裂的原因,開發研制了高性能抗裂外加劑,優化混凝土的設計和施工方法,并通過補償收縮達到混凝土體積穩定,提高抗裂強度,滿足混凝土拌和物高工作性能的要求。本研究采用多種測試技術,應用表面物理化學、結構化學、固體化學、復合材料學、斷裂力學等多學科的理論與方法,從不同的角度進行深入的研究和探討。通過調查研究建筑工程中出現的混凝土開裂、滲漏問題,發現混凝土在非荷載作用下開裂主要是由混凝土的自收縮、干燥收縮、溫度收縮、塑性收縮、碳化收縮等各種收縮變形引起的。
It has been offering secure network service to 600 local scientific researchers and some other internet users . the network parallel computation cluster inside the system has been applied to carry on magnanimity supercomputing of quantum chemistry by researchers in the state key laboratory of structure chemistry . it is highly appraised by experts and users 系統實現后已經提供了安全網絡服務給600名本地科研用戶以及一些所外互聯網用戶;同時該系統中所包含的網絡并行計算機群正在為中國科學院福建物質結構研究所結構化學國家重點實驗室的科研用戶提供量子化學海量超級計算服務。
During the past fifty years , it was widely used to measure the chemical properties of molecules in the fields of structural chemistry , organic chemistry , and pharmacy etc . in 1997 , a particular international conference was held to celebrate the fiftieth anniversary for the invention of the index , and published a special issue for the proceedings of the conference in discrete mathematics to memorize it 五十多年來統計化學、結構化學、有機化學、藥物研究等方面廣泛采用這一指標來測量分子的性能。 1997年國際上還專門召開了學術會議以慶祝這一指標提出五十周年,并出版論文專集以示紀念;這也主要是因為近年來,組合化學在國際學術界的興起,為尋找新的物質(特別是有機物、新型藥物)奠定了理論基礎。