X-ray preionization of rare-gas-halide lasers

The preionization characteristics of X-rays for self-sustained discharge rare-gas-halide lasers are summarized. X-rays showed features superior to UV for preionization of large volume high-pressure discharge lasers, which was experimentally confirmed. Futhermore, the effect of preionization on laser output was found to depend on the spatial distribution of preionization electron density and discharge electric field. When a uniform electric field area was homogeneously preionized with a collimated X-ray, an electron density of 10⁷cm^-3was found to be sufficient for high energy extraction of a XeCl laser.     

How ATE planning affects LSI manufacturing cost

To analyze the effects of automatic test equipment planning on total LSI manufacturing cost cost per chip, we simulate manufacturing cost by combining discrete event simulation and detailed parametric models of the LSI manufacturing system. This combination provides a more realistic evaluation than previous methods. For our example of ATE planning, we optimize the distribution of LSI testers between the wafer test process and final test process for cost per chip     

Stability of the multistrand superconducting cables under partial current distribution

The stability of the multistrand cables under partial current distribution among strands is discussed. The stability is influenced by a current sharing process among the strands. Stability tests under controlled current distribution are carried out for some test samples that had various electric resistance among strands. Then numerical analysis of the stability is carried out with a simplified electric circuit model that simulates current sharing process among strands. The results of the numerical calculations had good agreement with the experimental data. For stability of the multistrand cables, the electrical resistance among strands, which is the key parameter, is required to be lower than the normal resistance. This corresponds to the length of the heated region.     

Epidermal growth factor stimulates the tyrosine phosphorylation of SHPS-1 and association of SHPS-1 with SHP-2, a SH2 domain-containing protein tyrosine phosphatase

SHPS-1 is a 120 kDa glycosylated receptor-like protein that contains immunoglobulin-like domains in its extracellular region and four potential tyrosine phosphorylation for SH2 domain binding sites in its cytoplasmic region. Epidermal growth factor (EGF) stimulated the rapid tyrosine phosphorylation of SHPS-1 and subsequent association of SHPS-1 with SHP-2, a protein tyrosine phosphatase containing SH2 domains, in Chinese hamster ovary cells overexpressing human EGF receptors. In the cells overexpressing SHPS-1, the tyrosine phosphorylation of SHPS-1 was more evident than that observed in parent cells. However, overexpression of SHPS-1 alone did not affect the activation of MAP kinase in response to EGF. These results suggest that SHPS-1 may be involved in the recruitment of SHP-2 from the cytosol to the plasma membrane in response to EGF.     

Comparison of the 2-7-8 MMPI profile and the Perceptual Aberration—Magical Ideation Scale in identifying hypothetically psychosis-prone college students.

Compared college students with 2-7-8 profiles (from the D, Pt, and Sc scales, respectively) on the MMPI and students scoring high on the Perceptual Aberration–Magical Ideation (PAMIS) Scale on symptoms that are thought to indicate psychosis proneness. A modified Schedule for Affective Disorders and Schizophrenia—Lifetime Version interview revealed that the PAMIS group (19 males, 22 females) and 2-7-8-group (19 males, 20 females) did not differ on the number of Ss with psychotic and psychoticlike experiences. For both sexes, however, the PAMIS group exceeded the 2-7-8 group on the number of schizotypal experiences; the male PAMIS group also surpassed the male 2-7-8 group on hypomania. The groups were similar on depression and several other disorders as defined by Research Diagnostic Criteria. Findings suggest that some of the Ss identified by both scales were at elevated risk for psychosis. However, because only 3 Ss were selected by both scales, the MMPI 2-7-8 profile and the PAMIS selected different groups from that population. (45 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Consideration on common channel signaling evolution for globalintelligent networking

With the evolution of digital networks and intelligent network (IN) capabilities, the role of common channel signaling has become more and more important. In respect to IN, common channel signaling would play a significant role not only inside one network but also over multiple networks. International credit card validation and internetworking for digital mobile services represented by GSM (Global System for Mobile Communications) are examples which utilize internetwork signaling capabilities in the framework of the initial-phase IN. Enhanced service providers (ESPs) may access the public network through the common channel signaling interface to make use of the IN capabilities, as is being discussed in terms of ONA (open network architecture) or ONP (open network provision). This paper first identifies various scenarios where internetwork signaling interactions would take place in the framework of IN in the forthcoming era. It then identifies various requirements to cope with these scenarios. It finally discusses the directions for evolution of common channel signaling toward global intelligent networking     

Small intestinal metastasis from esophageal carcinoma associated with small intestinal obstruction: report of a case

The small intestine is rarely involved with metastatic tumors from outside the abdomen, and few case reports have been documented in the literature. We describe herein what to our knowledge is the third case of a solitary metastasis from squamous cell carcinoma (SCC) of the esophagus being found in the jejunum, causing small intestinal obstruction.     

Synthesis and properties of superabsorbent hydrogels based on guar gum and succinic anhydride

Synthesis of novel superabsorbent hydrogels has been investigated with the reaction of guar gum and succinic anhydride (SA), using of 4‐dimethylaminopyridine as esterification promoter and water or dimethylsulfoxide (DMSO) as reaction solvent, followed by NaOH neutralization. Hydrogels prepared in water exhibited somewhat higher water absorbency than those prepared in DMSO; its maximum water absorbency in pure water and aqueous 0.9% NaCl solution was ca. 200 g/g and 80 g/g, respectively. These values were considerably higher than those of hydrogels obtained from starch in a similar way. The products in this study biologically degraded up to 70–80% after 10 days in activated sludge, which shows their excellent biodegradability. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009