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- Huaihai Chen, Xuechao Li, Feng Hu, Wei Shi
- Global change biology
- 2013

Annual production of crop residues has reached nearly 4 billion metric tons globally. Retention of this large amount of residues on agricultural land can be beneficial to soil C sequestration. Such potential impacts, however, may be offset if residue retention substantially increases soil emissions of N(2)O, a potent greenhouse gas and ozone depletion… (More)

- Xuechao Li
- Graphs and Combinatorics
- 2006

- Jianbo Yang, Xuechao Li, Li Xu, Feng Hu, Huixin Li, Manqiang Liu
- Biology and Fertility of Soils
- 2012

The effect of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on N transformations and composition of ammonia-oxidizing bacteria (AOB) communities was investigated at the centimeter scale in a microcosm experiment under laboratory conditions. After 28 days, samples were collected from soil treated with urea or urea and DMPP at increasing… (More)

- Shuchao Li, Xuechao Li
- Discrete Mathematics
- 2009

- Shuchao Li, Xuechao Li, Zhongxun Zhu
- 2009

Given a molecular graph G, the Hosoya index Z(G) of G is defined as the total number of the matchings of the graph. Let Bn denote the set of bicyclic graphs on n vertices. In this paper, the minimal, the second-, the third-, the fourth-, and the fifth-minimal Hosoya indices of bicyclic graphs in the set Bn are characterized.

- Xuechao Li, Cun-Quan Zhang
- Discrete Mathematics
- 2003

Thomassen conjectured that every longest circuit of a 3-connected graph has a chord. The conjecture is veri2ed in this paper for projective planar graphs with minimum degree at least 4. c © 2002 Elsevier Science B.V. All rights reserved.

- Xuechao Li, Cun-Quan Zhang
- Journal of Graph Theory
- 2003

Thomassen conjectured that every longest circuit of a 3connected graph has a chord. It is proved in this paper that every longest circuit of a 4-connected graph embedded in a torus or Klein bottle has a chord. 2003 Wiley Periodicals, Inc. J Graph Theory 43: 1–23, 2003

- Xuechao Li, Rong Luo
- Graphs and Combinatorics
- 2003

- Calvin Montgomery, Jeffrey Overbey, Xuechao Li
- XSEDE
- 2015

OpenACC provides a high-productivity API for programming GPUs and similar accelerator devices. One of the last steps in tuning OpenACC programs is selecting values for the num_gangs and vector_length clauses, which control how a parallel workload is distributed to an accelerator's processing units. In this paper, we present OptACC, an autotuner that can… (More)

- Shuchao Li, Xuechao Li, Wei Jing
- Discrete Applied Mathematics
- 2009