Select Subject

All (8828)

Agronomy (158)

Animal Husbandry,... (64)

Aquatic Science (16)

Astronomy (36)

Aviation (22)

Basic Medicine (184)

Biology (504)

Chemical Engineering (103)

Chemistry (635)

Civil and Archite... (105)

Clinical Medicine (236)

Computer Science ... (924)

Dynamic and Elect... (121)

Earth Science (119)

Economics (67)

Education (31)

Electrics, Commun... (927)

Energy Science an... (67)

Engineering and T... (15)

Environmental Sci... (140)

Food Science and ... (63)

Forestry (36)

Hydraulic Enginee... (40)

Mechanics (240)

Metallurgical Eng... (32)

Mine Engineering ... (38)

Nuclear Science a... (21)

Pharmacy (98)

Physics (920)

Preventive Medici... (37)

Psychology (20)

Security Science ... (17)

Sports Science (6)

Surveying and Map... (15)

Textile Science a... (16)

Traditional Chine... (56)

Transportation En... (57)

Select/Unselect all

For Selected Papers

Saved Papers

Please enter a name for this paper to be shown in your personalized Saved Papers list


	1. Synthesis of mesoporous ZnO by direct precipitation with Lignin-phosphate quaternary ammonium salt
	Yuanru Guo,Fangdan Yu,Qingjiang Pan,Guizhen Fang
	Forestry 08 January 2012
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:In this paper，Mesoporous-ZnO crystals were prepared in aqueous solutions with Lignin-based surfactant(Lignin-phosphate quaternary ammonium salt，LPAS) by one step. X-ray diffraction(XRD) studies show that fine hexagonal wurtzite ZnO particles can be obtained with diameter of 20-40nm. SEM studies reveal that different concentrations of LPAS can affect the Morphology of ZnO. The ball particles can be obtained by low concentration of LPAS. TEM give the evidence that mosopores are found in ZnO crystals and with the average pore size of 36nm according to the Brunauer-Emmett-Teller (BET) measurement.
	TO cite this article:Yuanru Guo,Fangdan Yu,Qingjiang Pan, et al. Synthesis of mesoporous ZnO by direct precipitation with Lignin-phosphate quaternary ammonium salt[OL].[ 8 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4460560


	2. Spatial distribution pattern of coarse woody debris in two typical forest types in Tianbaoyan national nature reserve
	YOU Huiming,HE Dongjin,HE Xiaojuan,LIU Jinshan,CAI Changtang,YOU Weibin,XIAO Shihong
	Forestry 27 July 2011
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:The spatial distribution pattern of coarse woody debris of two typical forest ecosystems was conducted with Taylor's power law, Iwao's distribution function, and seven aggregation indexes in Tianbaoyan National Nature Reserve. The results showed that: 1）the spatial distribution pattern of CWD were aggregated, and the aggregation intensity declined with the scale increased; 2）Compared with natural disturbance, the aggregation intensity of logs and snags were increased by human disturbance; 3）It was tested by Blackith's method, the spatial distribution pattern of CWD tend to be susceptible by the external environment condition in small-scale. The spatial distribution pattern of CWD was formed by long-term interaction between natural environment and external disturbance. To some extent, based on these results, we will directly acquaint ourselves with the forest death patterns in the population development, then reveal how the external disturbance, environmental heterogeneity and individual biological features influence the population dynamics, thus provide theoretical basis for predicting population dynamics.
	TO cite this article:YOU Huiming,HE Dongjin,HE Xiaojuan, et al. Spatial distribution pattern of coarse woody debris in two typical forest types in Tianbaoyan national nature reserve[OL].[27 July 2011] http://en.paper.edu.cn/en_releasepaper/content/4436810

Select/Unselect all

For Selected Papers

Saved Papers

Please enter a name for this paper to be shown in your personalized Saved Papers list

Second-level Subject

Basic Subject of Forestry(4)
Economic Forestry(2)
Forest Protection(1)
Forest Statistics(0)
Forest Tree Genetics and ...(1)
Forest?Management(3)
Forestry Economics(0)
Forestry Engineering(16)
Other Subjects of Forestry(1)
Protection Forestry(1)
Silviculture(1)
Wildlife Protection and M...(0)

Rank

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.

	Check out RSS, or use RSS reader to subscribe this item