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	1. Influence of conformational changes on the kinetics behavior in hydrolysis of cellulose I and cellulose II¾ Acid Vs Enzymatic
	Wu Bin,Wang LuShan ,Zhao Yue,GAO Peiji
	Biology 07 March 2005
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	Abstract:Cellulose II prepared by mercerizing cotton fibers (cellulose I) is thought to be a useful polymer. Studies show that the hydrolysis of cellulose II by dilute acid is more remarkable than that of cotton fibers, whereas it is as difficult to be hydrolyzed by cellulase as cotton fibers. According to the structural changes such as swell of fibrils and decrease of Cr I % (Crystallinity index) confirmed by Atom force Microscopy (AFM, Atom force Microscopy), X-ray diffraction analysis and FT-IR (Transform-infrared spectrum) spectral analysis, cellulose II should show more susceptibility for both acid and enzymatic hydrolysis. However the crystal structure in cellulose II is more stable and the potential energy is to be higher than those of cotton fibers, which may be the key factors contributing to the decrease of hydrolysis rate by cellulase.
	TO cite this article:Wu Bin,Wang LuShan ,Zhao Yue, et al. Influence of conformational changes on the kinetics behavior in hydrolysis of cellulose I and cellulose II¾ Acid Vs Enzymatic[OL].[ 7 March 2005] http://en.paper.edu.cn/en_releasepaper/content/1650


	2. Biodiversity in the Core Habitat of Zhongwei Goat in Ningxia
	Shangzhanhuan,Yaoaixing
	Biology 23 February 2005
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	Abstract:lant species and animal species were investigated in the core region (the desert grasslands of the Xiangshan Mountains) of the Zhongwei Goat. The results showed that there were 151 plant species and all species belonged to 39 families or 95 genera. A few large families such as Gramineae, Leguminosae, Compositae, and Chenopodiaceae made up the highest proportions among the plant species. The characteristics of all the species development showed the effects of the arid environment. The composition of the floral origins was very small and sparse and most species were of the temperate compositions. Most of the plants were of the hemicryptophytic and arid types as well as ephemeral types, and that showed the effects of several factors. These factors include the arid environment, microrelief of the mountainous area and the long-term damages caused by overgrazing. All genera (95) can be classified into 11 areal-types and 8 subtypes. There were very few animal species and the most of the a
	TO cite this article:Shangzhanhuan,Yaoaixing. Biodiversity in the Core Habitat of Zhongwei Goat in Ningxia[OL].[23 February 2005] http://en.paper.edu.cn/en_releasepaper/content/1584


	3. Collapse of Water-Stress Emboli in the Tracheids of Platycladus Orientalis L.
	Shen Fanyi,Guo Rui,Gao Rongfu
	Biology 28 January 2005
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	Abstract:e did the same experiment as Lewis’ (1994), but came out with different kinetics of embolus collapse in the tracheids of stem segments of Platycladus Orientalis L.. Tangential wood sections were trimmed. They were observed under a microscope, while segments were dehydrated and rehydrated. As in Lewis’ experiment, following the initial contract of the gas in the tracheids of a segment, the elongated bubbles began to shrink. Then, we found that there were spherical bubbles between coverslip and glass slide, and the bigger ones were getting larger and the smaller ones contracted gradually while the elongated bubbles in the tracheids collapsed. By calculation, the total amount of gas in all bubbles at the beginning of the collapse of the elongated bubbles was almost the same as the amount of gas midway and at end. It has been known that when two spherical bubbles in an identical ambience connect the gas in the smaller one will pass into the larger one, and the bigger one will get larger a
	TO cite this article:Shen Fanyi,Guo Rui,Gao Rongfu. Collapse of Water-Stress Emboli in the Tracheids of Platycladus Orientalis L.[OL].[28 January 2005] http://en.paper.edu.cn/en_releasepaper/content/1509

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