Validation of ATHLET-CD with CORA-28 test

“Following the incidents at Chernobyl and Fukushima, severe accidents at nuclear power plants (NPP) have become a global concern. These accidents generally occur because of a failure in the reactor cooling system (RCS) and result in the melting of the reactor core and fission product release. This event is mostly caused by a LOCA, loss of flow accident, station blackout or loss of heat sink. During a severe accident, generation of hydrogen as a result of steam-zircaloy fuel cladding is a significant safety concern. To better understand and prevent the hydrogen generation issue, safety related experiments and safety related codes are being developed for NPPs in various countries. The goal of this article is to simulate and analyze the CORA-28 test at KIT (formerly KfKKernforschungszentrum Karlsruhe) to confirm the capabilities of one of the safety codes, ATHLET- CD (GRS). CORA experiments were conducted to examine hydrogen production and bundle degradation for BWR and PWR type fuel bundles under accident conditions, in order to better understand the attributes and behavior of a BWR or PWR bundle during a severe accident. The CORA-28 test differs from most other CORA tests in that it was performed with a pre-oxidized BWR bundle. It was seen that temperature evolutions, the hydrogen production rates and total amount of hydrogen production predicted by ATHLET-CD closely matched the CORA-28 experiment. If operators of nuclear power plants are able to predict hydrogen generation in the containment, that will help them in avoid hydrogen explosions and strengthen NPP safety measures”--Abstract, page iii

PENGARUH TINGKAT SUKU BUNGA SERTIFIKAT BANK INDONESIA DAN TINGKAT LIKUIDITAS TERHADAP RISIKO INVESTASI SAHAM PADA PERUSAHAAN JAKARTA ISLAMIC INDEX YANG TERDAFTAR DI BURSA EFEK INDONESIA

Pada umumnya hampir semua investasi mengandung unsur ketidakpastian atau risiko. Investor tidak tahu degan pasti hasil yang akan diperolehnya dari investasi yang dilakukan. Dalam keadaan semacam ini, dikatakan bahwa investor tersebut menghadapi risiko dalam investasi. Dalam melakukan investasi, investor seharusnya mempertimbangkan secara matang mengenai beberapa hal yang sangat penting dalam pengambilan keputusan investasi yang dilakukannya, yaitu berapa tingkat pengembalian yang diharapkannya, berapa besar risiko yang harus ditanggungnya dan berapa kelikuiditasan investasi tersebut. Penelitian ini bertujuan untuk menganalisis pengaruh tingkat suku bunga SBI dan tingkat likuiditas terhadap risiko investasi saham pada perusahaan yang terdaftar di Bursa Efek Indonesia dengan menggunakan\ud data sekunder yang diperoleh dari suku bunga SBI, harga saham, dan laporan keuangan secara lengkap masing-masing perusahaan di Bursa Efek Indonesia mulai periode 2006-2010. Metode pengambilan sampel menggunakan purposive sampling. Dari tujuh puluh perusahaan, hanya diambil delapan perusahaan, karena memenuhi kriteria perusahaan yang terdaftar pada Jakarta Islamic Index di Bursa Efek Indonesia tahun 2006- 2010 dan memiliki laporan keuangan secara lengkap tahun 2006-2010. Alat analisis yang digunakan adalah analisis regresi linier berganda. Berdasarkan dari hasil penelitian yang telah didapatkan bahwa variabel tingkat suku bunga SBI berpengaruh terhadap risiko investasi saham, dan variabel tingkat likuiditas tidak berpengaruh terhadap risiko investasi saham

Periodic flow about bluff bodies. part 1: Forces on cylinders and spheres in a sinusoidally oscillating fluid

Part of the results have been presented at the 14th International Conference on Coastal Engineering, Copenhagen Denmark, June 24-28, 1974.The in-line and transverse forces acting on cylinders and the in-line force acting on spheres placed in a sinusoidally oscillating fluid have been measured. The periodic flow was generated in a U-shaped vertical water channel through the use of a pneumatic oscillator.supported by the National Science Foundation, Washington, D. C. 20550http://archive.org/details/periodicflowabou00sar

Clinical and psychophysiological analysis of panic attacks in patients with various mental diseases

The fact that the unilateral approach to studying panic attacks (PA) is unsound has presently become evident in the context of one specialty - neurology or psychiatry.Subjects and methods. One hundred and ninety-three patients with PA, among whom 80 (30 men and 50 women; mean age 31.5±9.66 years) fully met the inclusion-exclusion criteria, were examined. A control group comprised 36 healthy individuals (16 men and 20 women; mean age 25.9±6.73 years). The interdisciplinary approach integrating two (neurological and psychiatric) paradigms was applied to investigate PA. Clinical, psychological, and neurophysiological studies were employed.Results and discussion. The clinical picture of PA and an interattack interval was shown to encompass similar autonomic and different psychopathological manifestations caused by varying pathogenic mechanisms. The clinical manifestations of the latter most frequently correspond to neurotic, specific personality, and schizotypal disorders. It was ascertained that each group of patients with PA, which was identified by the nosological principle, was characterized by the pattern of clinical and psychophysiological characteristics and the trend in PA in addition to general manifestations. The neurophysiological signs of mental disease, in whose picture PA developed, corresponded to the progression of psychopathological and personality manifestations of PA in each consecutive group. The determinant of the pathogenesis and clinical presentation of PA in various mental diseases is psychodynamic processes, the specific features of which need to be taken into account when making diagnostic, therapeutic, prognostic, and expert decisions

Effect of topical ozonetherapy on gingival wound healing in pigs: histological and immunohistochemical analysis

In this study, the effects of ozonetherapy on secondary wound healing were evaluated histologically and immuno-histochemically. Material and Methods: 8 healthy pigs were used in this study. Six wounds with 10 mm in diameter were created through the punch technique on the palatinal gingiva of each pig. Ozone gas was applied on only 3 wounds (test group) and the remaining 3 were left to natural healing (control group). Biopsy samples were taken from one of the wounds in each group on the third day, from another wound of each group on the seventh day, and from another one on the tenth day. Routine histological analysis and immuno-histochemical staining were performed to investigate transforming growth factor-beta (TGF-β) and (VEGF) expressions. Results: No statistical difference was found between the test and control groups in terms of collagen fibers, epithelial formation and inflammation scores. A VEGF expression found in the test group was statistically higher than control group samples taken on the 3rd and 7th day. There was no statistical difference between the test and control groups in terms of TGF-β expression on any of the sampling days. Conclusion: The topical application of ozone gas could be effective in the early stages of wound healing by increasing the amount of VEGF expression. Clinical Relevance: Topical application of ozone gas may be effective in the early stages of oral wound healing

Local and systemic biomarkers in gingival crevicular fluid increase odds of periodontitis

AimTo determine the independent and combined associations of interleukin-1beta (IL-1beta) and C-reactive protein (CRP) in gingival crevicular fluid (GCF) on periodontitis case status in the Australian population.Materials and methodsGCF was collected from 939 subjects selected from the 2004-2006 Australian National Survey of Adult Oral Health: 430 cases had examiner-diagnosed periodontitis, and 509 controls did not. IL-1beta and CRP in GCF were detected by enzyme-linked immunosorbent assays. Odds ratios (OR) and 95% confidence intervals (CIs) were calculated in bivariate and stratified analysis and fully adjusted ORs were estimated using multivariate logistic regression.ResultsGreater odds of having periodontitis was associated with higher amounts of IL-1beta (OR=2.4, 95% CI=1.7-3.4 for highest tertile of IL-1beta relative to lowest tertile) and CRP (OR=1.9, 95% CI=1.5-2.5 for detectable CRP relative to undetectable CRP). In stratified analysis, there was no significant interaction between biomarkers (p=0.68). In the multivariate analyses that controlled for conventional periodontal risk factors, these relationships remained (IL-1beta OR=1.8, 95% CI=1.1-2.6; CRP OR=1.7, 95% CI=1.3-2.3).ConclusionsElevated odds of clinical periodontitis was associated independently with each biomarker. This suggests that people with elevated biomarkers indicative of either local (IL-1beta) or systemic (CRP) inflammation are more likely to suffer from periodontal disease.Tracy R. Fitzsimmons, Anne E. Sanders, P. Mark Bartold and Gary D. Slad

Forces on cylinders and spheres in an oscillating fluid.

http://archive.org/details/forcesoncylinder00tut

Evaluating the energy metabolism of human brain tumours by lactate dehydrogenase and glucose 6 phosphate dehydrogenase activities and citrate levels

We examined lactate dehydrogenase (LDH) and glucose-6-phosphate dehydrogenase (G6PDH) activities and citrate levels in 37 human brain tumours and 10 normal brain tissues. All tumours showed decreased LDH activities. Since tumour cells rely on the energy produced either glycolysis (if glutamine is limited) or glutaminolysis (if carbohydrates are limited), we conclude that the source of decreased LDH activities can be high glutamine concentrations. In general the citrate levels of tumours were higher than those of normal brain. Previous studies have indicated that citrate carbons were mainly rerouted to synthesis of cytoplasmic lipids rather than to oxidation in the Krebs cycle. Thus high citrate levels of tumours may be a significant source of enhanced lipid synthesis that is needed for increased membrane synthesis. We found that G6PDH activities were highly variable in tumours, and suggest that these cannot reflect their proliferative activity. (C) 1998 Chapman & Hall Ltd