摘要 :
According to the results of cyclic triaxial tests, a linear correlation is presented between liquefaction resistance and elastic shear modulus, which shows the relation of Gmax (kPa) with (σd/2)1/2(kPa)1/2. When applied to soils ...
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According to the results of cyclic triaxial tests, a linear correlation is presented between liquefaction resistance and elastic shear modulus, which shows the relation of Gmax (kPa) with (σd/2)1/2(kPa)1/2. When applied to soils from different sites, the correlation can be normalized in reference to its minimum void ratio (emin). Accordingly, an improved method is established to evaluate the liquefaction potential with shear-wave velocity. The critical shear-wave velocity of liquefaction is in linear relation with 1/4 power of depth and the maximum acceleration during earthquakes, which can be used to explain the phenomenon that the possibility of liquefaction decreases with the increment of the depth. Compared with previous methods this method turns out simple and effective, which is also verified by the results of cyclic triaxial tests.
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摘要 :
According to the results of cyclic triaxial tests, a linear correlation is presented between liquefaction resistance and elastic shear modulus, which shows the relation of Gmax (kPa) with (s d/2)1/2(kPa)1/2. When applied to soils ...
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According to the results of cyclic triaxial tests, a linear correlation is presented between liquefaction resistance and elastic shear modulus, which shows the relation of Gmax (kPa) with (s d/2)1/2(kPa)1/2. When applied to soils from different sites, the correlation can be normalized in reference to its minimum void ratio (emin). Accordingly, an improved method is established to evaluate the liquefaction potential with shear-wave velocity. The critical shear-wave velocity of liquefaction is in linear relation with 1/4 power of depth and the maximum acceleration during earthquakes, which can be used to explain the phenomenon that the possibility of liquefaction decreases with the increment of the depth. Compared with previous methods this method turns out simple and effective, which is also verified by the results of cyclic triaxial tests,.
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摘要 :
Let Bn denote the set of n×n Boolean matrices. For A=(aij), B=(bij)∈Bn, if aij≤bij, i. j= 1, 2, '''', n. we say A≤B. An n×n Boolean matrix A is called primitive if there exists some positive integer k such that Ak=Jn, the all...
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Let Bn denote the set of n×n Boolean matrices. For A=(aij), B=(bij)∈Bn, if aij≤bij, i. j= 1, 2, '''', n. we say A≤B. An n×n Boolean matrix A is called primitive if there exists some positive integer k such that Ak=Jn, the all l’s matrix in Bn. Such a least positive integer k is called the exponent of A, denoted by γ（A）. Let Pn denote the set of all n×n primitive matrices in Bn. A matrix A∈Bn is called a Hall matrix if there exists some permutation matrix Q such that Q≤A.
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摘要 :
Experimental results of the last few years led to the general contention that plant photosynthesis consists of two collaborating (long wave and short wave) light reactions. It was also generally believed that only one of these rea...
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Experimental results of the last few years led to the general contention that plant photosynthesis consists of two collaborating (long wave and short wave) light reactions. It was also generally believed that only one of these reactions (the long wave one) is involved in the true cyclic photophosphorylation as catalysed by added PMS in isolated chloroplasts. However, it has been shown that this latter type of photophosphorylation is affected by molecular oxygen and the inhibitors of the short wave light reaction such as o-Ph and CMU. In our own experiments we have found that in sweet potato leaf cell preparations (LCP) both the ''red drop'' and the ''short wave enhancement'' phenomena
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摘要 :
The cathodic process of cerium(Ⅲ) ions in NaCl-2CsCl melt was studied by cyclic voltammetry and square wave voltammetry with tungsten and gold electrodes at 873 K. The two electroanalytical methods yield similar results. The cath...
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The cathodic process of cerium(Ⅲ) ions in NaCl-2CsCl melt was studied by cyclic voltammetry and square wave voltammetry with tungsten and gold electrodes at 873 K. The two electroanalytical methods yield similar results. The cathodic process of cerium(Ⅲ) ions consists of two reversible steps: Ce3+ + e-= Ce2+ and Ce2+ + 2e-= Ce. The half wave potentials of Ce3+/Ce2+ and Ce2+/Ce were determined as -2.525 V vs. Cl2/Cl- and -2.975 V vs. Cl2/Cl-, respectively. The diffusion coefficient of Ce3+ was also determined as 5.5 × 10-5 cm2·s-1.
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