In this work, we apply a principal component analysis (PCA)-based approach combined with look-up tables (LUTs) of corrections to accelerate the VLIDORT radiative transfer (RT) model used in the retrieval of ozone profiles from backscattered ultraviolet (UV) measurements by the Ozone Monitoring Instrument (OMI).
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The structure parameters of anhydrite crystal were obtained by means of first principles after structure optimization at 0~120 MPa.
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To study the mechanical and cracking modes of anhydrite rock under the freeze–thaw weathering process, the physico-mechanical characteristics and morphology …
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• We know that the radial component of the acceleration of B with respect to O or the acceleration of B, and the radial component of the acceleration of A with respect to B, NOTE: 1) A point at the end of a link which moves with constant angular velocity has no tangential component of acceleration. 2) When a point moves along a straight line,
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Several severe fires and explosions have happened in the past couple of decades. The major cause is addressed to the process reaction initiator. The cumulative heat effect can occur during processing, storage, and transportation. Acetic anhydride, one of the most crucial polymerization initiators, has been investigated in the present paper regarding its high thermal …
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To study the mechanical and cracking modes of anhydrite rock under the freeze–thaw weathering process, the physico-mechanical characteristics and morphology evolutions of anhydrite samples were determined by a series of laboratory tests. Then, a numerical simulation model was established through the PFC2D program, and the types and …
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The acceleration principle underscores the importance of aligning investment decisions with the trajectory of consumer demand. While businesses aim to capitalize on opportunities for growth and expansion, they must navigate the inherent uncertainties and risks associated with economic cycles and market dynamics.
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firmly grounded on the principles and practices of life cycle assessment (LCA), and follow our published Research Guidelines which define boundary or scope conditions and ensure equal treatment of all building materials and products in terms of assumptions, research decisions, estimating methods and other aspects of the work.
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These clinkers were subsequently mixed with anhydrite and gypsum for comparative analysis. Utilizing a range of analytical techniques such as isothermal calorimetry, X-ray diffraction (XRD), and thermogravimetric analysis (TGA), the early hydration process and the constitution of hydration products were systematically investigated.
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The principle of superposition [1] is applicable when the mathematical model of the problem to be solved is constituted by a system of equations that are linear and homogeneous in the input and the output variables. In the kinematic analysis of mechanisms, only the velocity analysis of holonomic or first-order non-holonomic mechanisms with time-independent …
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An angular acceleration sensor can be used for the dynamic analysis of human and joint motions. In this paper, an angular acceleration sensor with novel structure based on the principle of ...
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son, P. A. (1939). Interactions between the Multiplier Analysis and the Principle of Acceleration. The Review of Economics and Statistics, 21(2), 75. doi:10.2307/1927758
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Also known as equal arm analytical balance, which works on the principle of the first-class lever. It consists of a symmetrical beam and three knife edges. Two terminal knives support the pans, and the central knife-edge acts as a pivot about which a beam swings. ... Used in the determination and analysis of the density of solvent.
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This paper proposes a new method for quantitative analysis of the impact of CNT dispersion on cement paste by utilizing a hydration model of CNT-reinforced cement paste [13].Lee et al. [13] proposed hydration model of CNT-reinforced cement paste CNT-model …
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It probably results from partial rehydration of anhydrite with the remaining water vapor, which would be represented by the small exotherm observed at 265 °C in Fig. 6, or from spontaneous rehydration when exposed to ambient for XRD analysis. The results presented here demonstrate how the combined effect of pressure and self generated vapor of ...
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The strength development of hardened anhydrite was supplemented by X-ray diffraction and differential thermal analysis. The results are plotted in Fig. 3, Fig. 4, respectively. X-ray diffractograms (Fig. 3) show reflections for the formation of glauberite (Na 2 SO 4 ·CaSO 4 ), ferrinatrite (Na 3 FeSO 4 ·3H 2 O), gypsum (CaSO 4 ·2H 2 O) and ...
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Here, we characterized the pore structure and permeability of natural anhydrite-based cementitious material under various water-anhydrite (W/A) ratios based on the mercury …
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The principle of MIP is based on the Washburn's Eq. (2), ... The slope of the acceleration stage was similar in all mixes, but slightly offset in the mix S-P-20 L and to a smaller extent the S-P-5s-5 L. ... This is demonstrated in the XRD patterns in Fig. 4 and from the quantitative analysis shown in Fig. 10. Anhydrite retarded limestone ...
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The tetragonal to orthorhombic ferroelastic phase transition between rutile- and ${text{CaCl}}_{2}$-type ${text{SiO}}_{2}$ at high pressures is studied using first-principles …
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The paper is organized as follows: In Sec. II, we review the principles and current status of laser wakefield acceleration, sufficient to provide a good understanding of the electron beam properties that govern the production of light sources; in Sec. III, we present four sources produced by laser wakefield accelerated electrons: betatron ...
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Due to the beam-pointing and polarization diversities of carrier-mounted elements, it is widely recognized that the principle of pattern multiplication is not applicable to conformal arrays, particularly when coupling effects are considered. This article proposes a near-field Euler rotation-based technique to transform the far-field calculation of arbitrary conformal arrays into the …
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Particle Dynamics Electric and Magnetic Forces Steady-State Electric and Magnetic Fields Modification of Electric Surfaces Electric and Magnetic Field Lenses Calculation of Particle Orbits in Focusing Fields Transfer Matrices and Periodic Focusing Systems Electrostatic Accelerators and Pulsed High Voltage Linear Induction Accelerators Betatrons Resonant Cavities and …
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After mineral composition analysis, these anhydrite rocks were processed into disk-shaped samples with 61 mm in height and 20 mm in diameter according to the recommendations of ISRM (1989) [18].
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studied the tensile strength of the anhydrite intact rock and rock mass through laboratory analysis and eld investigation. Zhang et al. (2019) used Brazilian disc splitting tests to determine the tensile Young's modulus and Poisson's ratio of anhydrite rock. Due to the water–rock expansion and dissolution
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This book is an introduction to the theory of charged particle acceleration. It has two primary roles: 1.A unified, programmed summary of the principles underlying all charged particle accelerators. 2.A reference collection of equations and material essential to accelerator development and beam applications.
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Our results show that at T ≥ 120°C dry anhydrite fault gouge displays velocity-weakening frictional behavior (i.e., (a − b) < 0; see Figure 5a), whereas dry anhydrite …
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Compared with acceleration-based modal analysis, displacement can provide a more reliable and robust identification result for output-only modal analysis of long-span bridges. However, the estimated displacements from acceleration records are frequently unavailable due to unrealistic drifts. Aiming at obtaining more accurate and stable results for determining the …
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6.1. Anhydrite Structures Anhydrite structures in this study have the following types: (Figure 6). 6.1.1. Massive Anhydrite Structure This structure consists of masses in the thickness of a few centimeters to one meter. Massive anhydrite has been composed of various textures such as bladed, parallel, felt, equant and fibrous.
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The frictional behavior of anhydrite-bearing faults is of interest to (a) the safety and effectiveness of CO 2 storage in anhydrite-capped reservoirs, (b) seismicity induced by hydrocarbon production, and (c) natural seismicity nucleated in evaporite formations. We performed direct shear experiments on simulated anhydrite fault gouges, at a range of …
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The characteristics of the gypsum pore structure are closely related to its macroscopic mechanical properties and permeability. Recent research on anhydrite-based cementitious materials is mainly focused on modification and enhancement and their effect on pore structure characteristics, while the relationship between pore structure and permeability …
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