composite pressure vessel cng made of epoxy – carbon material with nonmetal liner is 60% lighter than aluminum vessel under the same conditions. one of the important parameters in the pressure vessels design is their resistance against impact and prevention of explosion. in this paper, the effects of low velocity impact on composite pressure vessel are investigated using fe analysis. the vessel...

A factorization theorem is proved in the Hardy spaces Hp of the bi-upper half plane, 0 < p ≤ 1. The proof is based on some fundamental work of Chang-Fefferman on atomic decompositions of Hp.

We propose a model of the household where the transmission mechanism between home appliances and women’s labor supply is identical to the one in Greenwood, Seshadri, and Yorukoglu (2005) with one important exception. We explicitly model firms’ pricing and output choices in the appliances sector and thus, the price of home appliances is determined endogenously by the laws of supply and demand ra...

In analogy with the periods of abelian integrals of differentials of the third kind for an elliptic curve defined over a number field, we introduce a notion of periods of the third kind for a rank 2 Drinfeld Fq[t]-module ρ defined over an algebraic function field. In this paper we establish explicit formulae for these periods of the third kind for ρ. Combining with the main result in [Chang-Pap...

Caterpillar compaction NA compaction, say Ryan Case, YunPei Chang, Nicholas Cozzarelli, Carlos Bustamante, and colleagues (University of California, Berkeley, CA), may work via a cooperative caterpillar-like mechanism. The caterpillar is formed by multiple copies of condensin protein—in this case MukBEF—with each V-shaped condensin contributing two legs. Compaction occurs when the caterpillar’s...

1389-1286/$ see front matter 2013 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.comnet.2013.08.005 ⇑ Corresponding author. Tel.: +852 62134272. E-mail addresses: [email protected] (P. Zhou), csxluo@ comp.polyu.edu.hk (X. Luo), [email protected] (A. Chen), csrchang@ comp.polyu.edu.hk (R.K.C. Chang). 1 This work was done when the co-author was with The Hong Kong Po...

based on the evaluation of two human cell lines, hela and chang, abeuploidy and several marker chromosomes were found in both cells. the morphological characteristic of marker chromosomes of chang cells was distinctly different from hela. certain submetacentric marker chromosome was frequently present among 80% of marker chromosomes of chang cells which distinguished this line from hela, which ...

Endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) have been shown to communicate with each other via cytokine signaling during neovascularization. In this study, we investigated the effect of platelet-derived growth factor (PDGF), a cytokine released from tumors and ECs, on vascular endothelial growth factor (VEGF) expression in human VSMCs and underlying signal transduction path...