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  1. ... are a heterogeneous group of refractory anaemias. They are characterized... been used with success in pyridoxine refractory hereditary sideroblastic anaemia.4 References...

  2. ...course B. During depolarization period, this is called absolute refractory period. (No AP is allowed to be transmitted no...

    分類:科學及數學 > 生物學 2007年05月05日

  3. ...ge運動點解唔會抽筋呢 ???? 答一:這是因為心肌的absolute refractory period絕對不反應期比肌肉長得多,這個絕對不反應期表示...個絕對不反應期過去之後,就會出現相對會不反應期relative refractory period,只要傳給心肌的信號大過心肌的threshold value(閾值...

    分類:科學及數學 > 生物學 2007年03月24日

  4. ... compounds, primarily magnesium oxide, are used mainly as refractory material in furnace linings for producing iron, steel, nonferrous ...

    分類:科學及數學 > 化學 2006年11月14日

  5. ...: 1. Structural - eg. bricks, floor tiles 2. Refractories - (not sure what examples i can give you, all i know is that this type...

  6. ...4300–4700 K. Tantalum hafnium carbide (Ta4HfC5) is a refractory compound with a very high melting point of 4488 K (4215 °C, 7619...

  7. ...of their own daughters, even though they do happen to prove a little refractory , this law was seldom or never put in execution, though perhaps the young ladies...

    分類:社會及文化 > 語言 2007年01月05日