On-line matrix addition for detecting aerosol particles

Zhou, Liuzhu; Zhu, Yuan; Guo, Xiaoyong; Zhao, Wenwu; Gu, Xiuquan; Li, Fang; Zhang, Weijun

doi:10.1007/s11433-005-0187-4

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Permafrost and seasonally frozen soil accounts for about 25% of the world's land area [1]. Due to the volume expansion of the water in the soil pores after freezing and the moisture migration along capillaries under the action of the temperature gradient which forms ice lenses, constructions on the frozen ground regions are often damaged by frost heave [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Freezing Strength of Soil-Concrete Lining Interface in Cold Regions

Fuping¹,

Shang²,

Wenting³

et al. 2023

Geofluids

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The lining of water conveyance canals in cold regions is usually subjected to serious damage, such as spalling, bulging, and fracture, due to the harsh natural environment. The main causes of these types of damage are the normal frost-heaving force and tangential frost-heaving force (adfreeze force) acting on the liner plate. In this study, the adfreeze forces between the foundation soil and liner plate were studied using the direct shear test, considering the effects of the initial water content, test temperature, and compactness. The results show that the increase of the water content, the increase of the temperature, and the decrease of the compactness increased the interfacial peak shear displacement, and they all varied in the range of 0.3–1.6 mm. With the decrease of the initial water content of the soil sample, the increase of the test temperature, and the decrease of the compactness, the peak shear stress decreased significantly with the amplitude between 51 and 87%. The interfacial cohesion decreased significantly with the increase of the initial water content, the increase of the temperature, and the decrease of the compactness. The interfacial friction angle had no apparent variation pattern. At room temperature, the interfacial friction angle decreased significantly with the increase of the water content. When the water content was 30%, the interfacial friction angle was almost lost completely, which can easily lead to the sliding loss of the foundation soil and further damage, such as the instability of the lining.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Freezing Strength of Soil-Concrete Lining Interface in Cold Regions

Fuping¹,

Shang²,

Wenting³

et al. 2023

Geofluids

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“…Whether and how to evaluate a city subway construction project needs? This is a complex decision problem, if use the single index evaluation, it cannot reflect the authenticity, complexity of the project decision [1][2][3][4]. Therefore, the evaluation performed on a Harbin subway line project adopts a multi-layer fuzzy comprehensive evaluation method, in order to make the complex decision-making process for quantitative processing, through a series of mathematical operation, finally get the project decision.…”

Section: Introductionmentioning

confidence: 99%

Decision Evaluation of Harbin Metro Based on Fuzzy Theory

Chen

2013

AMM

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The paper introduces some information about Harbin Metro line 1, makes the decision analysis on economies, environment, society and geological environment of Harbin Metro line 1 by some fuzzy comprehensive evaluation model, and gives the weight coefficients of indicators through analytic hierarchy process. The comprehensive evaluation result provides the basis for decision-makers during decision of metro projects.

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“…With their technique, they generated mass spectra of individual bacterial spores [12,13]. Other groups have also demonstrated MALDI on a single-particle level by either on-line coating of the particles [14,15] or premixing the matrix and analyte [16,17].…”

Section: Introductionmentioning

confidence: 99%