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- Lixin Mao, Gregg Henderson
- Journal of economic entomology
- 2007

Ku Shen, Sophora flavescens Aiton (Leguminosae), contains alkaloids that possess broad biological activities. This study showed that total matrines (a mixture of the alkaloids), and matrine andâ€¦ (More)

- Lixin Mao, Nanqing Ding
- 2005

In this paper, we introduce a dimension, called the cotorsion dimension, for modules and rings. The relations between the cotorsion dimension and other dimensions are discussed. Various results areâ€¦ (More)

- Lixin Mao, Gregg Henderson
- Journal of insect physiology
- 2010

In a finite environment, population growth can lead to crowding, increased densities and stress. Termites live in highly organized societies and densities can increase astronomically as coloniesâ€¦ (More)

- Lixin Mao, Nanqing Ding, Luchezar L. Avramov
- 2006

Let R be a ring. A left R-module M (respectively right R-module N ) is called FI-injective (respectively FI-flat) if Ext1(G,M)= 0 (respectively Tor1(N,G)= 0) for any FP-injective left R-module G.â€¦ (More)

- Lixin Mao, Nanqing Ding
- 2006

Let R be a ring, M a right R-module, and n a fixed non-negative integer. M is called n-cotorsion if Extn+1 R N M = 0 for any flat right R-module N . M is said to be n-flat if ExtR M N = 0 for anyâ€¦ (More)

- COTORSION MODULES, Lixin Mao, Nanqing Ding
- 2005

Let R be a ring. A right R-module C is called cotorsion if Ext1 R F C = 0 for any flat right R-module F. In this paper, we first give some results on cotorsion envelopes that are analogous to thoseâ€¦ (More)

- Qige Qi, Jizhong Qi, Chunyan Guo, Yan Hong, Weiwei Wang, Lixin Mao
- World Automation Congress 2012
- 2012

This paper adopted theoretical and empirical methods to study the urban parks in Changchun, China on their effects on urban life and their social functions. As is shown in the findings, urban parksâ€¦ (More)

- Masao Miyazaki, Lixin Mao, Gregg Henderson, Roger A Laine
- Journal of chromatography. B, Analyticalâ€¦
- 2009

Juvenile hormone (JH) III is responsible for control of a variety of insect physiological and developmental states, including caste differentiation of the Formosan subterranean termite (Coptotermesâ€¦ (More)

- Lixin Mao, Nanqing Ding
- 2005

Let R be a ring and M a right R-module. Ng (1984) defined the finitely presented dimension f p dim M of M as inf n there exists an exact sequence Pn+1 â†’ Pn â†’ Â· Â· Â· â†’ P0 â†’ M â†’ 0 of right R-modules,â€¦ (More)

- Mitsuo Hoshino, Gonzalo Aranda Pino, +12 authors Lixin Mao
- 2007

National Olympic Memorial Youth Center 3-1. Yoyogi Kamizono-cho, Shibuya-ku, Tokyo 151-0052, JAPAN