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Interaction and independence on methane oxidation of landfill cover soil among three impact factors:

Pinjing HE, Na YANG, Wenjuan FANG, Fan Lü, Liming SHAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2, Pages 175-185 doi: 10.1007/s11783-011-0320-8

Abstract: To understand the influence patterns and interactions of three important environmental factors, i.e. soil water content, oxygen concentration, and ammonium addition, on methane oxidation, the soils from landfill cover layers were incubated under full factorial parameter settings. In addition to the methane oxidation rate, the quantities and community structures of methanotrophs were analyzed to determine the methane oxidation capacity of the soils. Canonical correspondence analysis was utilized to distinguish the important impact factors. Water content was found to be the most important factor influencing the methane oxidation rate and Type II methanotrophs, and the optimum value was 15% (w/w), which induced methane oxidation rates 10- and 6- times greater than those observed at 5% (w/w) and 20% (w/w), respectively. Ambient oxygen conditions were more suitable for methane oxidation than 3% oxygen. The addition of of ammonium induced different effects on methane oxidation capacity when conducted at low or high water content. With regard to the methanotrophs, Type II was sensitive to the changes of water content, while Type I was influenced by oxygen content. Furthermore, the methanotrophic acidophile, , was detected in soils with a pH of 4.9, which extended their known living environments.

Keywords： quantitative polymerase chain reaction (PCR) denaturing gradient gel electrophoresis (DGGE) principal component analysis (PCA) canonical correspondence analysis (CCA)

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A New Sufficient Conditions and Hamiltonian graphs

Zhao Kewen

Strategic Study of CAE 2003, Volume 5, Issue 11, Pages 61-64

Abstract:

Let G be a simple graph, δ and a be minimum degree and independence number of G, respectively

Keywords： Hamiltonian graph neighborhood union conditions minimum degree independence number

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The relevance of James Lovelock’s research and philosophy to environmental science and academia

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1639-7

Abstract: Finally, Lovelock’s free-spirited nature and research independence allow academia to rethink current

Keywords： Academic independence Climate change Electron capture detector Environmental equilibrium Global warming

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Diagnostic criteria of latent autoimmune diabetes in adults (LADA): a review and reflection

Yu Liao, Yufei Xiang, Zhiguang Zhou

Frontiers of Medicine 2012, Volume 6, Issue 3, Pages 243-247 doi: 10.1007/s11684-012-0201-y

Abstract: Diabetes has become a major public health problem in China nowadays. There are almost 97 million diabetic patients nationwide. Latent autoimmune diabetes in adults (LADA) is a subtype of autoimmune diabetes. Although it has been reported for about 20 years, the diagnostic criteria of this disease remain controversial. The discussion mainly focused on serum autoantibodies, period of insulin need and age of diagnosis. Besides, β cell function, metabolic parameters, genetic factors and cell immunity may also contribute to the formulation of the criteria. Here, we aim to review and discuss the diagnostic criteria of latent autoimmune diabetes in adults.

Keywords： LADA diagnostic criteria autoantibodies insulin independence age of diagnosis

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Study on Rank Preservation of the MCDM With Normalizing Formula

Zhang Ling,Zhou Dequn,Li Hongwei,Zhu Peifeng

Strategic Study of CAE 2006, Volume 8, Issue 12, Pages 85-88

Abstract:

The application of the normalizing formula will result in violations of independence from irrelevantThe application of these methods can remove the influence of the normalizing formula to the independence

Keywords： MCDM decision normalizing violations of independence from irrelevant alternatives rank preservation rank