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1

Pentosan Polysulfate  

MedlinePLUS

Pentosan polysulfate is used to relieve bladder pain and discomfort related to interstitial cystitis, a disease that causes swelling and scarring of the bladder wall. Pentosan polysulfate is similar to ...

2

Sodium pentosan polysulfate resulted in cartilage improvement in knee osteoarthritis - An open clinical trial-  

Microsoft Academic Search

BACKGROUND: Pentosan polysulfate sodium (pentosan) is a semi-synthetic drug manufactured from beech-wood hemicellulose by sulfate esterification of the xylopyranose hydroxyl groups. From in vitro and animal model studies, pentosan has been proposed as a disease modifying osteoarthritis drug (DMOAD). The objective of this study was to assess the efficacy, safety, and patient satisfaction in patients with mild radiographic knee osteoarthritis

Kenji Kumagai; Susumu Shirabe; Noriaki Miyata; Masakazu Murata; Atsushi Yamauchi; Yasuhumi Kataoka; Masami Niwa

2010-01-01

3

Sodium pentosan polysulfate resulted in cartilage improvement in knee osteoarthritis - An open clinical trial-  

PubMed Central

Background Pentosan polysulfate sodium (pentosan) is a semi-synthetic drug manufactured from beech-wood hemicellulose by sulfate esterification of the xylopyranose hydroxyl groups. From in vitro and animal model studies, pentosan has been proposed as a disease modifying osteoarthritis drug (DMOAD). The objective of this study was to assess the efficacy, safety, and patient satisfaction in patients with mild radiographic knee osteoarthritis (OA) findings and OA-associated symptoms and signs. Methods Twenty patients were assessed clinically at Nagasaki University Hospital. The radiographic indications of OA were grade 1 to 3 using the Kellgren-Lawrence Grading System (K/L grade). Pentosan used in this study was manufactured and supplied in sterile injectable vials (100 mg/ml) by bene GmbH, Munich, Germany. The study was a single-center, open-label trial. Treatment consisted of 6 weekly subcutaneous injections (sc) of pentosan (2 mg/kg). Patients were clinically assessed at entry and 1 to 8, 11, 15, 24 & 52 weeks post treatment. The results were analyzed using one way ANOVA and Dunnett's method. Results Hydrarthroses were reduced quickly in all cases. The clinical assessments, i.e., knee flexion, pain while walking, pain after climbing up and down stairs, etc, were improved significantly and these clinical improvements continued for almost one year. The dose used in this study affected the blood coagulation test, but was within safe levels. Slightly abnormal findings were noted in serum triglycerides. Conclusions Pentosan treatment in twenty patients with mild knee OA seemed to provide improvements in clinical assessments and C2C level of cartilage metabolism. Trial Registration UMIN Clinical Trials Registry (UMIN-CTR) UMIN000002790

2010-01-01

4

Pentosan Polysulfate: A Novel Therapy for the Mucopolysaccharidoses  

PubMed Central

Background Pentosan polysulfate (PPS) is an FDA-approved, oral medication with anti-inflammatory and pro-chondrogenic properties. We have previously shown that animal models of the mucopolysaccharidoses (MPS) exhibit significant inflammatory disease, contributing to cartilage degeneration. Enzyme replacement therapy (ERT) only partly reduced inflammation, and anti-TNF-alpha antibody therapy significantly enhanced clinical and pathological outcomes. Here we describe the use of PPS for the treatment of MPS type VI rats. Methodology/Principal Findings Treatment began during prenatal development and at 1 and 6 months of age. All animals were treated until they were 9 months old. Significant reductions in the serum and tissue levels of several inflammatory markers (e.g., TNF-alpha, MIP-1alpha and RANTES/CCL5) were observed, as was reduced expression of inflammatory markers in cultured articular chondrocytes. ADAMTS-5/aggrecanase-2 levels also were reduced in chondrocytes, consistent with an elevation of serum tissue inhibitor of metalloproteinase 1. Marked improvements in motility and grooming behavior occurred, along with a reduction in eye and nasal secretions and a lessening of the tracheal deformities. MicroCT and radiographic analyses further revealed that the treated MPS skulls were longer and thinner, and that the teeth malocclusions, misalignments and mineral densities were improved. MicroCT analysis of the femurs and vertebrae revealed improvements in trabecular bone mineral densities, number and spacing in a subset of treated MPS animals. Biomechanical assessments of PPS-treated spines showed partially restored torsional behaviors, suggesting increased spinal stability. No improvements were observed in cortical bone or femur length. The positive changes in the PPS-treated MPS VI rats occurred despite glycosaminoglycan accumulation in their tissues. Conclusions Based on these findings we conclude that PPS could be a simple and effective therapy for MPS that might provide significant clinical benefits alone and in combination with other therapies.

Schuchman, Edward H.; Ge, Yi; Lai, Alon; Borisov, Yury; Faillace, Meghan; Eliyahu, Efrat; He, Xingxuan; Iatridis, James; Vlassara, Helen; Striker, Gary; Simonaro, Calogera M.

2013-01-01

5

[Pentosan polysulfate sodium prevents kidney morphological changes and albuminuria in rats with type 1 diabetes].  

PubMed

Decreased levels of glycosaminoglycans (GAGs) have been observed in the kidney and other organs, in human and animal models of diabetes. Long-term administration of heparins and other glycosaminoglycans has demonstrated a beneficial effect on morphological and functional kidney abnormalities in diabetic rats. We assessed the effect of pentosan polysulfate sodium (PPS), a semi-synthetic glycosaminoglycan with low anticoagulant activity, on kidney involvement in streptozotocin diabetic rats. Diabetes was induced in male Sprague-Dawley rats by i.v. administration of streptozotocin (STZ). Animals were randomly allocated to three groups: C = control, STZ and STZ + PPS = pretreated with PPS (15 mg/kg, s.c.). After three months of follow-up, blood and 24 h-urine samples were obtained, the animals were sacrificed and the kidney microdissected for morphometric analysis. Urinary albumin excretion was markedly increased in untreated diabetic rats (C = 0.26 ± 0.03 vs STZ = 7.75 ± 1.8 mg/24 h) and PPS treatment partially prevented the albumin rise (3.7 ± 0.7 mg/24 h), without affecting the metabolic control HbA1c (C = 3.6 ± 1.7; STZ = 8.82 ± 0.47; STZ + PPS = 8.63 ± 0.54). Electron microscope observation revealed typical renal lesions described in experimental diabetes (STZ group). PPS administration prevents the tubular basement membrane thickening and the loss of cytoarchitecture induced by experimental diabetes. Our data demonstrate that long-term administration of PPS has a favourable effect on morphological and functional abnormalities in kidneys of diabetic rats and suggests a potential therapeutic use for this compound. PMID:21113213

Mathison Natera, Y; Finol, H J; Quero, Z; González, R; González, J

2010-01-01

6

75 FR 53704 - Prospective Grant of Exclusive License: Use of Pentosan Polysulfate To Treat Certain Conditions...  

Federal Register 2010, 2011, 2012, 2013

...Polysulfate To Treat Certain Conditions of the Prostate AGENCY: National Institutes of Health...POLYSULFATE TO TREAT CERTAIN CONDITIONS OF THE PROSTATE,'' developed by Dr. Gary Striker...deposition, and so reduces the size of the prostate gland and decreases associated...

2010-09-01

7

Dose Responsive Effects of Subcutaneous Pentosan Polysulfate Injection in Mucopolysaccharidosis Type VI Rats and Comparison to Oral Treatment  

PubMed Central

Background We previously demonstrated the benefits of daily, oral pentosan polysulfate (PPS) treatment in a rat model of mucopolysaccharidosis (MPS) type VI. Herein we compare these effects to once weekly, subcutaneous (sc) injection. The bioavailability of injected PPS is greater than oral, suggesting better delivery to difficult tissues such as bone and cartilage. Injected PPS also effectively treats osteoarthritis in animals, and has shown success in osteoarthritis patients. Methodology/Principal Findings One-month-old MPS VI rats were given once weekly sc injections of PPS (1, 2 and 4 mg/kg, human equivalent dose (HED)), or daily oral PPS (4 mg/kg HED) for 6 months. Serum inflammatory markers and total glycosaminoglycans (GAGs) were measured, as were several histological, morphological and functional endpoints. Overall, weekly sc PPS injections led to similar or greater therapeutic effects as daily oral administration. Common findings between the two treatment approaches included reduced serum inflammatory markers, improved dentition and skull lengths, reduced tracheal deformities, and improved mobility. Enhanced effects of sc treatment included GAG reduction in urine and tissues, greater endurance on a rotarod, and better improvements in articular cartilage and bone in some dose groups. Optimal therapeutic effects were observed at 2 mg/kg, sc. No drug-related increases in liver enzymes, coagulation factor abnormalities or other adverse effects were identified following 6 months of sc PPS administration. Conclusions Once weekly sc administration of PPS in MPS VI rats led to equal or better therapeutic effects than daily oral administration, including a surprising reduction in urine and tissue GAGs. No adverse effects from sc PPS administration were observed over the 6-month study period.

Frohbergh, Michael; Ge, Yi; Meng, Fanli; Karabul, Nesrin; Solyom, Alexander; Lai, Alon; Iatridis, James; Schuchman, Edward H.; Simonaro, Calogera M.

2014-01-01

8

Mesenchymal progenitor cells combined with pentosan polysulfate mediating disc regeneration at the time of microdiscectomy: a preliminary study in an ovine model.  

PubMed

Object Following microdiscectomy, discs generally fail to undergo spontaneous regeneration and patients may experience chronic low-back pain and recurrent disc prolapse. In published studies, formulations of mesenchymal progenitor cells combined with pentosan polysulfate (MPCs+PPS) have been shown to regenerate disc tissue in animal models, suggesting that this approach may provide a useful adjunct to microdiscectomy. The goal of this preclinical laboratory study was to determine if the transplantation of MPCs+PPS, embedded in a gelatin/fibrin scaffold (SCAF), and transplanted into a defect created by microdiscectomy, could promote disc regeneration. Methods A standardized microdiscectomy procedure was performed in 18 ovine lumbar discs. The subsequent disc defects were randomized to receive either no treatment (NIL), SCAF only, or the MPC+PPS formulation added to SCAF (MPCs+PPS+SCAF). Necropsies were undertaken 6 months postoperatively and the spines analyzed radiologically (radiography and MRI), biochemically, and histologically. Results No adverse events occurred throughout the duration of the study. The MPC+PPS+SCAF group had significantly less reduction in disc height compared with SCAF-only and NIL groups (p < 0.05 and p < 0.01, respectively). Magnetic resonance imaging Pfirrmann scores in the MPC+PPS+SCAF group were significantly lower than those in the SCAF group (p = 0.0213). The chaotropic solvent extractability of proteoglycans from the nucleus pulposus of MPC+PPS+SCAF-treated discs was significantly higher than that from the SCAF-only discs (p = 0.0312), and using gel exclusion chromatography, extracts from MPC+PPS+SCAF-treated discs also contained a higher percentage of proteoglycan aggregates than the extracts from both other groups. Analysis of the histological sections showed that 66% (p > 0.05) of the MPC+PPS+SCAF-treated discs exhibited less degeneration than the NIL or SCAF discs. Conclusions These findings demonstrate the capacity of MPCs in combination with PPS, when embedded in a gelatin sponge and sealed with fibrin glue in a microdiscectomy defect, to restore disc height, disc morphology, and nucleus pulposus proteoglycan content. PMID:24702507

Oehme, David; Ghosh, Peter; Shimmon, Susan; Wu, Jiehua; McDonald, Courtney; Troupis, John M; Goldschlager, Tony; Rosenfeld, Jeffrey V; Jenkin, Graham

2014-06-01

9

Pentosan polysulfate treatment ameliorates motor function with increased serum soluble vascular cell adhesion molecule-1 in HTLV-1-associated neurologic disease.  

PubMed

The main therapeutic strategy against human T lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) characterized by lower extremity motor dysfunction is immunomodulatory treatment, with drugs such as corticosteroid hormone and interferon-?, at present. However, there are many issues in long-term treatment with these drugs, such as insufficient effects and various side effects. We now urgently need to develop other therapeutic strategies. The heparinoid, pentosan polysulfate sodium (PPS), has been safely used in Europe for the past 50 years as a thrombosis prophylaxis and for the treatment of phlebitis. We conducted a clinical trial to test the effect of subcutaneous administration of PPS in 12 patients with HAM/TSP in an open-labeled design. There was a marked improvement in lower extremity motor function, based on reduced spasticity, such as a reduced time required for walking 10 m and descending a flight of stairs. There were no significant changes in HTLV-I proviral copy numbers in peripheral blood contrary to the inhibitory effect of PPS in vitro for intercellular spread of HTLV-I. However, serum soluble vascular cell adhesion molecule (sVCAM)-1 was significantly increased without significant changes of serum level of chemokines (CXCL10 and CCL2). There was a positive correlation between increased sVCAM-1and reduced time required for walking 10 m. PPS might induce neurological improvement by inhibition of chronic inflammation in the spinal cord, through blocking the adhesion cascade by increasing serum sVCAM-1, in addition to rheological improvement of the microcirculation. PPS has the potential to be a new therapeutic tool for HAM/TSP. PMID:24671717

Nakamura, Tatsufumi; Satoh, Katsuya; Fukuda, Taku; Kinoshita, Ikuo; Nishiura, Yoshihiro; Nagasato, Kunihiko; Yamauchi, Atsushi; Kataoka, Yasufumi; Nakamura, Tadahiro; Sasaki, Hitoshi; Kumagai, Kenji; Niwa, Masami; Noguchi, Mitsuru; Nakamura, Hideki; Nishida, Noriyuki; Kawakami, Atsushi

2014-06-01

10

Pentosan polysulfate treatment preserves renal autoregulation in ANG II-infused hypertensive rats via normalization of P2X1 receptor activation  

PubMed Central

Inflammatory factors are elevated in animal and human subjects with hypertension and renal injury. We hypothesized that inflammation contributes to hypertension-induced renal injury by impairing autoregulation and microvascular reactivity to P2X1 receptor activation. Studies were conducted in vitro using the blood-perfused juxtamedullary nephron preparation. Rats receiving ANG II (60 ng/min) infusion were treated with the anti-inflammatory agent pentosan polysulfate (PPS) for 14 days. The magnitude and progression of hypertension were similar in ANG II and ANG II+PPS-treated rats (169 ± 5 vs. 172 ± 2 mmHg). Afferent arterioles from control rats exhibited normal autoregulatory behavior with diameter decreasing from 18.4 ± 1.6 to 11.4 ± 1.7 ?m when perfusion pressure was increased from 70 to 160 mmHg. In contrast, pressure-mediated vasoconstriction was markedly attenuated in ANG II-treated rats, and diameter remained essentially unchanged over the range of perfusion pressures. However, ANG II-treated rats receiving PPS exhibited normal autoregulatory behavior compared with ANG II alone rats. Arteriolar reactivity to ATP and ?,?-methylene ATP was significantly reduced in ANG II hypertensive rats compared with controls. Interestingly, PPS treatment preserved normal reactivity to P2 and P2X1 receptor agonists despite the persistent hypertension. The maximal vasoconstriction was 79 ± 3 and 81 ± 2% of the control diameter for ATP and ?,?-methylene ATP, respectively, similar to responses in control rats. PPS treatment significantly reduced ?-smooth muscle actin staining in afferent arterioles and plasma transforming growth factor-?1 concentration in ANG II-treated rats. In conclusion, PPS normalizes autoregulation without altering ANG II-induced hypertension, suggesting that inflammatory processes reduce P2X1 receptor reactivity and thereby impair autoregulatory behavior in ANG II hypertensive rats.

Guan, Zhengrong; Fuller, Barry S.; Yamamoto, Tatsuo; Cook, Anthony K.; Pollock, Jennifer S.

2010-01-01

11

How gluten properties are affected by pentosans  

Microsoft Academic Search

During the wet separation of starch and gluten, both water extractable pentosans (WEP) and water unextractable solids (WUS) have a negative effect on gluten yield. Gluten properties are also affected: the gluten becomes less extensible. In comparison to the control, addition of WUS or WEP resulted in less gluten with a higher maximum resistance to extension (Rmax) and a smaller

Mingwei Wang; Ton van Vliet; Robert J Hamer

2004-01-01

12

Anti?nutritive effect of wheat pentosans in broiler chickens: Roles of viscosity and gut microflora  

Microsoft Academic Search

1. The mechanism of the anti?nutritive activity of isolated wheat pentosans was investigated by examining the roles of digesta viscosity and gut microflora in broiler chickens.2. Wheat pentosans were isolated by alkaline extraction and purified by sequential treatment with pancreatin, a?amylase and lichenase, and high?speed centrifugation. Some of the pentosans were depolymerised using a ß?xylanase, which reduced the relative viscosity

M. Choct; G. Annison

1992-01-01

13

Polysulfated sialic acid derivatives as anti-human immunodeficiency virus.  

PubMed

We report the synthesis of a novel alkyl polysulfated sialic acid derivative denoted as NMSO3. NMSO3 exhibited potent inhibition against both laboratory and clinical human immunodeficiency virus type 1 (HIV-1). The anti-viral activity of this compound (1 uM) was compared to dextran sulfate (3 uM), and was found to be more potent against HIV-1IIIb than AZT (10 uM). The anti-coagulation time was more than 15-fold shorter than that of dextran sulfate. An in vivo anti-viral study of NMSO3 in NOD-SCID-PBL mice HIV model showed complete protection of the animals from virus challenge at the concentration of 10 mg/kg. This suggests that NMSO3 can be effective in the treatment of HIV-infected individuals. PMID:16143490

Terada, Masaki; Fujita, Shuji; Suda, Isao; Mastico, Robert

2005-09-01

14

Production of furfural from pentosan-rich biomass: analysis of process parameters during simultaneous furfural stripping.  

PubMed

Among the furan-based compounds, furfural (FUR) shows interesting properties as building-block or industrial solvent. It is produced from pentosan-rich biomass via xylose cyclodehydration. The current FUR production makes use of homogeneous catalysts and excessive amounts of steam. The development of greener furfural production and separation techniques implies the use of heterogeneous catalysts and innovative separation processes. This work deals with the conversion of corncobs as xylose source to be dehydrated to furfural. The results reveal differences between the use of direct corncob hydrolysis and dehydration to furfural and the prehydrolysis and dehydration procedures. Moreover, this work focuses on an economical analysis of the main process parameters during N2-stripping and its economical comparison to the current steam-stripping process. The results show a considerable reduction of the annual utility costs due to use of recyclable nitrogen and the reduction of the furfural purification stages. PMID:23810948

Agirrezabal-Telleria, I; Gandarias, I; Arias, P L

2013-09-01

15

Effect of pentosans addition on pasting properties of flours of eight hard white spring wheat cultivars.  

PubMed

The effects of water extractable pentosans (WEP) and water unextractable pentosans (WUP) on pasting properties in flours of eight different hard white spring wheat (HWSW) cultivars was studied. WEP and WUP isolated from a hard wheat flour were added to each of the cultivars at 1% and 2% level. The results indicated that WEP exhibited a pronounced effect on pasting properties as compared to WUP and variety. Univariate analysis of variance (ANOVA) was used to evaluate sources of variation. The variety significantly (P?results revealed that WUP did not induce significant (P?

Arif, Saqib; Ali, Tahira Mohsin; Ul Afzal, Qurat; Ahmed, Mubarik; Siddiqui, Asim Jamal; Hasnain, Abid

2014-06-01

16

Effects of Low Level Water-soluble Pentosans, Alkaline-extractable Pentosans, and Xylanase on the Growth and Development of Broiler Chicks  

PubMed Central

This study investigated the effects of low levels of water-soluble pentosans (WSP), alkaline-extractable pentosans (AEP), and xylanase on the growth and organ development of broiler chicks. Three hundred and fifty 1-d-old female broiler chicks were randomly allocated into seven experimental groups of five pen replicates, with ten chicks per replicate. The control group consumed a corn-soybean meal-based diet. Six dietary treatment groups consumed the basal diet supplemented with one of the following: WSP at 50 mg/kg (WSP50) or 100 mg/kg (WSP100); AEP at 50 mg/kg (AEP50) or 100 mg/kg (AEP100); or xylanase at 3 mg/kg (Xase3) or 6 mg/kg (Xase6). Data including the body weight, digestive organ weights, gut length, rectal digesta viscosity, and gut microflora and pH were collected on d 5, 10, and 15. When compared to the control group, WSP50 promoted body weight gain and organ growth throughout the study, calculated as 3-d averages (p<0.05). WSP100 increased weight gain and enhanced organ development (proventriculus, gizzard, and gut) on d 10 (p<0.05), but the 3-d averages were not different from the control group except for the weight of gizzard. Both Xase3 and Xase6 increased the 3-d average weight gain and the growth of the gizzard (p<0.05). WSP50 increased the digesta viscosity compared to Xase3 on d 10 and 15 (p<0.05). WSP50, Xase3, and Xase6 increased the concentration of Lactobacillus in the rectum when compared to the control group (p<0.05), but only Xase3 lowered the digesta pH in the ileum and cecum on d 10 and 15. AEP had minimal influence on the growth and organ development of broilers. The results showed that low levels of WSP, AEP, and xylanase had different effects and underlying mechanisms on the growth and organ development of broiler chicks. WSP50 could increase the growth performance of broilers fed a corn-soybean meal-based diet.

Sheng, Q. K.; Yang, L. Q.; Zhao, H. B.; Wang, X. L.; Wang, K.

2013-01-01

17

Inhibition of the classical and alternative pathways of the human complement system by glycosaminoglycan polysulfate.  

PubMed

Glycosaminoglycan polysulfate (GAGPS) concentration-dependently inhibited the activation of the classical and alternative pathways of the human complement system in vitro. Concentrations of > or = 0.2 mg/ml GAGPS prevented the cleavage of C4 by human aggregated gammaglobulin as evidence of inhibition of the classical pathway. At concentrations of > or = 0.15 mg/ml a concentration-dependent inhibition of the cleavage of factor B, the major step in the activation of the alternative pathway, was seen in the presence of inulin. Concentrations < 0.05 mg/ml did not have a measurable effect on either pathway. The lysis of sheep red blood cells, which is mediated largely by the classical pathway, was significantly inhibited at 3.84 mg/ml GAGPS, with a mean inhibition of 45.7%. On the other hand, the same concentration of GAGPS almost completely inhibited the lysis of rabbit red blood cells, which is mediated by the alternative pathway of complement. Our results suggest that the inhibition by GAGPS is an early event in the activation of complement, occurring before the assembly of the C3 convertases of either pathway. The possible use of this drug in acute life-threatening situations where complement is thought to have a pathogenic role is discussed. PMID:7850029

de Messias, I T; Mohren, D; Kajdacsy-Balla, A

1994-01-01

18

Hemorrhagic diathesis in avian species following intramuscular administration of polysulfated glycosaminoglycan.  

PubMed

Polysulfated glycosaminoglycans (PSGAGs) have been used for decades in a variety of species for the management of osteoarthritic pain. However, reports on the use of PSGAGs in avian species are scarce. In domestic cats and dogs, PSGAG injections have caused prolongation of clotting times but are considered to be an efficacious drug with a wide margin of safety. This publication documents four cases of fatal coagulopathies in different avian species (one coraciiforme, two raptors, and one psittacine) following the intramuscular administration of PSGAG. All affected birds received varying dosages and dosing intervals of PSGAG. Three of the four birds experienced fatal hemorrhage into the pectoral muscle, while the fourth bled continuously from the injection site. Only one bird had chronic, severe pre-existing disease; the remainder were being managed for osteoarthritis. This report highlights the importance of species-specific dosing of PSGAG and warrants further investigation into the etiopathogenesis of this process. PMID:23505708

Anderson, Kadie; Garner, Michael M; Reed, Holly H; Cook, Kimberly; Aguilar, Roberto; Horton, Susan; Case, Allison L; Wolf, Karen N

2013-03-01

19

Effects of bound versus soluble pentosan polysulphate in PEG/HA-based hydrogels tailored for intervertebral disc regeneration.  

PubMed

Previous reports in the literature investigating chondrogenesis in mesenchymal progenitor cell (MPC) cultures have confirmed the chondro-inductive potential of pentosan polysulphate (PPS), a highly sulphated semi-synthetic polysaccharide, when added as a soluble component to culture media under standard aggregate-assay conditions or to poly(ethylene glycol)/hyaluronic acid (PEG/HA)-based hydrogels, even in the absence of inductive factors (e.g. TGF?). In this present study, we aimed to assess whether a 'bound' PPS would have greater activity and availability over a soluble PPS, as a media additive or when incorporated into PEG/HA-based hydrogels. We achieved this by covalently pre-binding the PPS to the HA component of the gel (forming a new molecule, HA-PPS). We firstly investigated the activity of HA-PPS compared to free PPS, when added as a soluble factor to culture media. Cell proliferation, as determined by CCK8 and EdU assay, was decreased in the presence of either bound or free PPS whilst chondrogenic differentiation, as determined by DMMB assay and histology, was enhanced. In all cases, the effect of the bound PPS (HA-PPS) was more potent than that of the unbound form. These results alone suggest wider applications for this new molecule, either as a culture supplement or as a coating for scaffolds targeted at chondrogenic differentiation or maturation. We then investigated the incorporation of HA-PPS into a PEG/HA-based hydrogel system, by simply substituting some of the HA for HA-PPS. Rheological testing confirmed that incorporation of either HA-PPS or PPS did not significantly affect gelation kinetics, final hydrogel modulus or degradation rate but had a small, but significant, effect on swelling. When encapsulated in the hydrogels, MPCs retained good viability and rapidly adopted a rounded morphology. Histological analysis of both GAG and collagen deposition after 21 days showed that the incorporation of the bound-PPS into the hydrogel resulted in increased matrix formation when compared to the addition of soluble PPS to the hydrogel, or the hydrogel alone. We believe that this new generation injectable, degradable hydrogel, incorporating now a covalently bound-PPS, when combined with MPCs, has the potential to assist cartilage regeneration in a multitude of therapeutic targets, including for intervertebral disc (IVD) degeneration. PMID:24215733

Frith, Jessica E; Menzies, Donna J; Cameron, Andrew R; Ghosh, P; Whitehead, Darryl L; Gronthos, S; Zannettino, Andrew C W; Cooper-White, Justin J

2014-01-01

20

Effects of AGM-1470 and pentosan polysulphate on tumorigenicity and metastasis of FGF-transfected MCF-7 cells.  

PubMed Central

Previously, we described FGF-1- or FGF-4-transfected MCF-7 breast carcinoma cells which are tumorigenic and metastatic in untreated or tamoxifen-treated ovariectomised nude mice. In this study, we have assessed the effects of AGM-1470, an antiangiogenic agent, and pentosan polysulphate (PPS), an agent that abrogates the effects of FGFs, on tumour growth and metastasis produced by these FGF-transfected MCF-7 cells. Untreated or tamoxifen-treated ovariectomised mice were injected with FGF-transfected cells, treated with AGM-1470 or PPS, and tumour growth and metastasis analysed. The sensitivity of FGF-transfected and parental MCF-7 cells to AGM-1470 or PPS was also determined in vitro. Both AGM-1470 and PPS inhibited tumour growth in otherwise untreated or tamoxifen-treated mice injected with either FGF- or FGF-4-transfected MCF-7 cells. This effect was more reliably seen in tamoxifen-treated animals. AGM-1470 was about 10(5) times less potent in inhibiting the anchorage-dependent growth of parental MCF-7 or FGF-transfected MCF-7 cells than in inhibiting the growth of human umbilical vein endothelial cells. PPS did not affect the in vitro growth of the transfectants or parental cells. Thus, the growth-inhibitory effect on tumours was in excess of the effect of either drug on the same cells in tissue culture, implying that stromal elements are important determinants of the effects of these drugs. There was a positive correlation between tumour size and the extent of proximal lymph node metastasis. However, neither drug had a significant effect on the extent of metastasis to proximal or distal lymph nodes or lungs. AGM-1470 or PPS may be helpful in cases of breast carcinoma in which angiogenesis is due to expression of FGFs by the tumour cells and may be more effective when combined with tamoxifen.

McLeskey, S. W.; Zhang, L.; Trock, B. J.; Kharbanda, S.; Liu, Y.; Gottardis, M. M.; Lippman, M. E.; Kern, F. G.

1996-01-01

21

NTP Technical Report on the Toxicology and Carcinogenesis Studies of Elmiron(Trademark) (CAS No. 37319-17-8) in F344/N Rats and B6C3F1 Mice (Gavage Studies).  

National Technical Information Service (NTIS)

Elmiron, a white powder, is the sodium salt of pentosan polysulfate, a semisynthetic sulfated polyanion composed of beta-D-xylopyranose residues with biological properties similar to heparin. Elmiron is used in the United States for the relief of urinary ...

2004-01-01

22

Relationships Among Grain Hardness, Pentosan Fractions, and End-Use Quality of Wheat  

Microsoft Academic Search

Cereal Chem. 77(2):241-247 Grain texture (hardness) in wheat ( Triticum aestivum L.) is a major determinant of end-usage. Variation in grain texture can be conceptually assigned to the two major hardness classes that result from the action of one major gene (Hardness) or to as-yet undetermined factors contributing to residual variation within hardness classes. Identifying the physico- chemical basis of

A. D. Bettge; Craig F. Morris

2000-01-01

23

Current strategies for managing interstitial cystitis.  

PubMed

Interstitial cystitis is a relatively common disorder that can be treated successfully in the majority of cases. Symptoms can be effectively controlled, and disease pathophysiology addressed, using a multimodal medical regimen based on heparinoid therapy. As appropriate to the individual patient, heparinoid therapy is supplemented by oral medications aimed at reversing neural upregulation and controlling any allergies. A new and promising adjunct to the multimodal regimen is an intravesical therapeutic solution that combines pentosan polysulfate or heparin with lidocaine and sodium bicarbonate. Preliminary results indicate this therapeutic solution provides immediate temporary relief of symptoms. PMID:14996625

Parsons, C Lowell

2004-02-01

24

In vitro hemorheological effects of parenteral agents used in peripheral arterial disease  

NASA Astrophysics Data System (ADS)

Peripheral arterial disease (PAD) is a frequent manifestation of systemic atherosclerosis. In PAD hemorheological parameters were defined as risk factors in a number of studies and several therapeutic agents were tried in these conditions. Our study aims to investigate and compare the in vitro hemorheological effects of various drugs generally used in the parenteral treatment of intermittent claudication and critical limb ischemia. Blood samples of healthy male volunteers were incubated with iloprost, alprostadil, pentoxifylline, sulodexide or pentosan polysulfate at calculated therapeutic serum concentration. Hematocrit (Hct) was determined by microhematocrit centrifuge. Plasma and apparent whole blood viscosities (WBV) were evaluated by capillary viscometer. Red blood cell aggregation was measured by LORCA (laserassisted optical rotational cell analyzer) aggregometer, and LORCA ektacytometer was used for measuring erythrocyte deformability at 37°C. Iloprost, alprostadil, and pentoxifylline incubation did not have any significant effect on plasma and apparent WBV. Elongation index increased in samples incubated with alprostadil at low shear stresses 0.95 and 0.53 Pa (p < 0.05). Sulodexide significantly improved WBV and Hct/WBV ratio (p < 0.05). Incubation with pentosan polysulfate resulted in higher WBV, lower Hct/WBV ratio and deterioration in the aggregation parameters (p < 0.05). Sulodexide may have beneficial effect on a macrorheological parameter; alprostadil may improve a microrheological parameter. Hemorheological alterations could be important in PAD patients with hampered vasodilator capacity.

Biro, Katalin; Sandor, Barbara; Toth, Andras; Koltai, Katalin; Papp, Judit; Rabai, Miklos; Toth, Kalman; Kesmarky, Gabor

2014-05-01

25

Toxicity and carcinogenicity of Elmiron in F344\\/N rats and B6C3F 1 mice following 2 years of gavage administration  

Microsoft Academic Search

Elmiron (sodium pentosan polysulfate) is used for the relief of urinary bladder pain associated with interstitial cystitis. The National Toxicology Program (NTP) tested this compound because of its orphan drug status and lack of information about its chronic toxicity and carcinogenicity. Groups of 50 male and 50 female F344\\/N rats were given Elmiron in de-ionized water by gavage at doses

Kamal M. Abdo; Jerry D. Johnson; Abraham Nyska

2003-01-01

26

Meloxicam and surgical denervation of the coxofemoral joint for the treatment of degenerative osteoarthritis in a Bengal tiger (Panthera tigris tigris).  

PubMed

An adult male white Bengal tiger (Panthera tigris tigris) with pronounced atrophy of the pelvic musculature was diagnosed with degenerative osteoarthritis of the coxofemoral joints. Initial management with the nonsteroidal anti-inflammatory drug meloxicam and a semisynthetic sodium pentosan polysulfate resulted in clinical improvement and radiographic stabilization of the arthritic condition over several months. However, because pain was still evident, bilateral denervation of the coxofemoral joints was performed, successfully ameliorating the signs of osteoarthritic pain in the tiger. Meloxicam has shown good clinical efficacy for the treatment of osteoarthritis and other painful conditions in large felids. Coxofemoral joint denervation offers many advantages for the treatment of osteoarthritis in exotic carnivore species, and should be considered a viable treatment modality. PMID:17319147

Whiteside, Douglas P; Remedios, Audrey M; Black, Sandra R; Finn-Bodner, Susan T

2006-09-01

27

Results.  

ERIC Educational Resources Information Center

Describes the Collegiate Results Instrument (CRI), which measures a range of collegiate outcomes for alumni 6 years after graduation. The CRI was designed to target alumni from institutions across market segments and assess their values, abilities, work skills, occupations, and pursuit of lifelong learning. (EV)

Zemsky, Robert; Shaman, Susan; Shapiro, Daniel B.

2001-01-01

28

Intravesical treatment of bladder pain syndrome/interstitial cystitis: from the conventional regimens to the novel botulinum toxin injections.  

PubMed

Introduction: Bladder pain syndrome (BPS) includes interstitial cystitis (IC) and is often used as a synonym of it (i.e., BPS/IC). It is associated with lower urinary tract symptoms as well as with negative cognitive, behavioral, sexual and/or emotional consequences. Unfortunately, none of the numerous existing oral and intravesical treatments have been effective for all of the BPS subtypes and therefore relevant research is ongoing. Areas covered: In this review, the authors analyze the existing literature for the intravesical treatment of BPS/IC with focus on the novel administration of botulinum toxin (BTX). Several intravesical drugs have been studied in the past, including lidocaine, heparin, pentosan polysulfate sodium, dimethyl sulfoxide, chondroitin sulfate, hyaluronic acid as well as investigational drugs such as GM-0111. Recently, intravesical submucosal injections of BTX have been studied in patients with BPS/IC. Expert opinion: Most of the recent studies use BTX-A with no serious adverse effects and with satisfactory results in patients who do not respond to oral or standard intravesical therapy. Nevertheless, there is no consensus regarding the best dosage scheme of BTX, the injection sites and the treatment intervals. BTX intravesical administration in patients with BPS/IC is a safe and efficient treatment option; yet the level of evidence of the initial studies is not high. There is still the need for large randomized controlled studies so that a consensus can be reached for the ideal BTX dosage, injection sites and intervals between treatments. PMID:24749738

Dellis, Athanasios; Papatsoris, Athanasios G

2014-06-01

29

Specific interaction of aurintricarboxylic acid with the human immunodeficiency virus/CD4 cell receptor  

SciTech Connect

The triphenylmethane derivative aurintricarboxylic acid (ATA), but not aurin, selectively prevented the binding of OKT4A/Leu-3a monoclonal antibody (mAb) and, to a lesser extent, OKT4 mAb to the CD4 cell receptor for human immunodeficiency virus type 1 (HIV-1). The effect was seen within 1 min at an ATA concentration of 10 {mu}M in various T4{sup +} cells (MT-4, U-937, peripheral blood lymphocytes, and monocytes). It was dose-dependent and reversible. ATA prevented the attachment of radiolabeled HIV-1 particles to MT-4 cells, which could be expected as the result of its specific binding to the HIV/CD4 receptor. Other HIV inhibitors such as suramin, fuchsin acid, azidothymidine, dextran sulfate, heparin, and pentosan polysulfate did not affect OKT4A/Leu-3a mAb binding to the CD4 receptor, although the sulfated polysaccharides suppressed HIV-1 adsorption to the cells at concentrations required for complete protection against HIV-1 cytopathogenicity. Thus, ATA is a selective marker molecule for the CD4 receptor. ATA also interfered with the staining of membrane-associated HIV-1 glycoprotein gp120 by a mAb against it. These unusual properties of a small molecule of nonimmunological origin may have important implications for the study of CD4/HIV/AIDS pathogenesis and possibly treatment.

Schols, D.; Baba, M.; Pauwels, R.; Desmyter, J.; De Clercq, E. (Katholieke Universiteit Leuven (Belgium))

1989-05-01

30

Restoration of the Barrier Function to Acid-Damaged Bladder by Intravesical Chondroitin Sulfate  

PubMed Central

Purpose Chondroitin sulfate, which is less expensive and more inert than heparinoids, hyaluronan or pentosan polysulfate, has been introduced to restore the barrier function lost due to epithelial dysfunction in interstitial cystitis (IC). The binding of chondroitin sulfate to damaged bladder as a function of the range of pH seen in urine, its efficacy in restoring the bladder's permeability barrier, and the capacity of damaged bladder to bind chondroitin sulfate have not been determined previously. Methods Binding of chondroitin sulfate to bladder urothelium was investigated quantitatively using chondroitin sulfate highly labeled with Texas Red and quantitative fluorescence microscopy in a mouse model of acid damage of the urothelium. The efficacy of restoring the barrier function was determined using passage of intravesically instilled 86Rb, a potassium ion mimetic, through the urothelium into the bloodstream in a rat model of bladder damage. The binding capacity of acid-damaged bladder was determined by fluorometry. Results Chondroitin sulfate bound tightly and exclusively to the mouse bladder surface that had been damaged by acid but showed only minimal binding to undamaged bladder. There was no systematic variation with pH. The model showed some variability in the degree of damage induced. In rats, chondroitin sulfate instillation restored permeability to 86Rb to control levels. Binding was saturable at 0.67 ± 0.13 mg/cm2 of bladder surface. Conclusions Chondroitin sulfate binds preferentially to damaged urothelium and restores the impermeability barrier. This suggests that the GAG layer is a major contributor to the impermeability of bladder urothelium. As determined by the binding capacity, the dose applied to humans in Canada (400 mg per instillation) is sufficient to obtain maximum efficacy.

Hauser, Paul J.; Buethe, David A.; Califano, John; Sofinowski, Troy M.; Culkin, Daniel J.; Hurst, Robert E.

2011-01-01

31

[Importance of the structure of the clot in thrombolysis].  

PubMed

Activation of plasminogen by tissue-type plasminogen activator (tpA) is potentiated by fibrin. We have demonstrated the role of fibrin polymerization in the potentiating effect of tpA-induced fibrinolysis. Therefore a pathogenic mechanism of thrombotic disorder may be related to an abnormal fibrin polymerization: the abnormal clot being less accessible to fibrinolysis than normal one. This defective lysis may be due to a defective enhancement by the abnormal fibrin of plasminogen activation by tpA, as demonstrated for fibrinogen Dusard, a congenital dysfibrinogenemia associated with a very severe thrombotic disorder. In some other cases, a decrease in the availability of the plasmin cleavage sites in fibrin clot may be involved. On the contrary, some antithrombotic drugs such as pentosane polysulfate in modifying clot structure allow a better degradation of fibrin clot by fibrinolytic enzymes. It is speculated that this enhanced fibrinolysis could explain, almost in part, the antithrombotic action of these drugs. PMID:2441630

Soria, C; Soria, J; Mirshahi, M; Desvignes, P; Bonnet, P; Caen, J P

1987-01-01

32

The various faces of autoimmune endocrinopathies: non-tumoral hypergastrinemia in a patient with lymphocytic colitis and chronic autoimmune gastritis.  

PubMed

Serum gastrin levels exceeding 1000pg/ml (normal, <100) usually raise the suspicion for a neuroendocrine tumor (NET) that secretes gastrin. Rarely, such elevated gastrin levels are seen in patients with pernicious anemia which most commonly is associated with autoimmune gastritis (AG). AG can occur concomitantly with other autoimmune disorders including lymphocytic colitis (LC). Gastrin stimulates enterochromaffin-like cells which increase histamine secretion. Histamine excess can cause diarrhea as can bacterial overgrowth or LC. We present a 57-year-old woman with diarrhea, sporadic epigastric pain, and bloating. She also had a history of interstitial cystitis and took pentosan polysulfate and cetirizine. She had no history of ulcers, renal impairment or carcinoid syndrome. Fasting serum gastrin was 1846pg/ml. Esophagoduodenal gastroscopy and biopsies revealed chronic gastritis and a pH of 7 with low stomach acid. Serum gastrin and plasma chromogranin A were suggestive of a gastrinoma or NET. Pernicious anemia was unlikely. Imaging studies did not reveal any tumor. Random colonic biopsy was compatible with LC, possibly explaining her diarrhea, although we also considered excessive histamine from elevated gastrin, bacterial overgrowth, and pentosan polysulfate which can cause diarrhea and be misleading in this setting, pointing to the diagnosis of gastrinoma. At 4year follow-up in 2012, fasting serum gastrin was 1097pg/ml and the patient asymptomatic taking only cetirizine for nasal allergies. This case illustrates that diarrhea may be associated with very high serum gastrin levels in the setting of chronic gastritis, LC, and interstitial cystitis (pentosan use), without clear evidence for a gastrinoma or NET. If no history of ulcers or liver metastases is present in such cases, watchful observation rather than an extensive/invasive and costly search for a NET may be justified. Considering the various forms of polyglandular syndrome, this may represent a variant and we here provide an algorithm for working up such patients, while also reviewing literature on the intertwined relationship between the immune and endocrine systems. PMID:23043903

Melcescu, Eugen; Hogan, Reed B; Brown, Keith; Boyd, Stewart A; Abell, Thomas L; Koch, Christian A

2012-12-01

33

Combined Anti-Inflammatory and Anti-AGE Drug Treatments Have a Protective Effect on Intervertebral Discs in Mice with Diabetes  

PubMed Central

Objective Diabetes and low back pain are debilitating diseases and modern epidemics. Diabetes and obesity are also highly correlated with intervertebral disc (IVD) degeneration and back pain. Advanced-glycation-end-products (AGEs) increase reactive-oxygen-species (ROS) and inflammation, and are one cause for early development of diabetes mellitus. We hypothesize that diabetes results in accumulation of AGEs in spines and associated spinal pathology via increased catabolism. We present a mouse model showing that: 1) diabetes induces pathological changes to structure and composition of IVDs and vertebrae; 2) diabetes is associated with accumulation of AGEs, TNF?, and increased catabolism spinal structures; and 3) oral-treatments with a combination of anti-inflammatory and anti-AGE drugs mitigate these diabetes-induced degenerative changes to the spine. Methods Three age-matched groups of ROP-Os mice were compared: non-diabetic, diabetic (streptozotocin (STZ)-induced), or diabetic mice treated with pentosan-polysulfate (anti-inflammatory) and pyridoxamine (AGE-inhibitor). Mice were euthanized and vertebra-IVD segments were analyzed by ?CT, histology and Immunohistochemistry. Results Diabetic mice exhibited several pathological changes including loss in IVD height, decreased vertebral bone mass, decreased glycosaminoglycan content and morphologically altered IVDs with focal deposition of tissues highly expressing TNF?, MMP-13 and ADAMTS-5. Accumulation of larger amounts of methylglyoxal suggested that AGE accumulation was associated with these diabetic degenerative changes. However, treatment prevented or reduced these pathological effects on vertebrae and IVD. Conclusion This is the first study to demonstrate specific degenerative changes to nucleus pulposus (NP) morphology and their association with AGE accumulation in a diabetic mouse model. Furthermore, this is the first study to demonstrate that oral-treatments can inhibit AGE-induced ROS and inflammation in spinal structures and provide a potential treatment to slow progression of degenerative spine changes in diabetes. Since diabetes, IVD degeneration, and accumulation of AGEs are frequent consequences of aging, early treatments to reduce AGE-induced ROS and Inflammation may have broad public-health implications.

Illien-Junger, Svenja; Grosjean, Fabrizio; Laudier, Damien M.; Vlassara, Helen; Striker, Gary E.; Iatridis, James C.

2013-01-01

34

Sulfonation of papain treated chitosan and its mechanism for anticoagulant activity  

PubMed Central

The novel low molecular weight chitosan polysulfate (MW 5,120–26,200 Da) was prepared using the depolymerization of chitosan with papain (EC. 3.4.22.2). The sulfonation of depolymerized products was performed using chlorosulfonic acid in N, N-dimethylformamide under semi-heterogeneous conditions. The structures of the products were characterized by FTIR, 13C NMR, and 1H NMR (1D, 2D NMR) spectroscopy. The present study sheds light on the mechanism of anticoagulant activity of chitosan polysulfate. Anticoagulant activity was investigated by an activated partial thromboplastin assay, a thrombin time assay, a prothrombin time assay and thrombelastography. Surface plasmon resonance also provided valuable data for understanding the relationship between the molecular binding of sulfated chitosan to two important blood clotting regulators, antithrombin III and heparin cofactor II. These results show that the principal mechanism by which this chitosan polysulfate exhibits anticoagulant activity is mediated through heparin cofactor II and is dependent on polysaccharide molecular weight.

Suwan, Jiraporn; Zhang, Zhenqing; Li, Boyangzi; Vongchan, Preeyanat; Meepowpan, Puttinan; Zhang, Fuming; Mousa, Shaker A.; Mousa, Shaymaa; Premanode, Bhusana; Kongtawelert, Prachya; Linhardt, Robert J.

2009-01-01

35

DONUT results  

SciTech Connect

The DONUT experiment succeeded in observing tau-neutrino CC interactions for the first time in 2000. The analysis using total sample is presented in this paper, based on 3.5x10{sup 17} protons on target. The number of identified {nu}{sub {tau}} CC interactions is 9 from 581 neutrino interactions located in the emulsion. The result of the first measurement of {nu}{sub {tau}} CC cross section is consistent with the expectation from the Standard Model.

Furukawa, Tomoko [Nagoya University, (Japan)

2008-02-21

36

Characterizing antiprion compounds based on their binding properties to prion proteins: Implications as medical chaperones  

PubMed Central

A variety of antiprion compounds have been reported that are effective in ex vivo and in vivo treatment experiments. However, the molecular mechanisms for most of these compounds remain unknown. Here we classified antiprion mechanisms into four categories: I, specific conformational stabilization; II, nonspecific stabilization; III, aggregation; and IV, interaction with molecules other than PrPC. To characterize antiprion compounds based on this classification, we determined their binding affinities to PrPC using surface plasmon resonance and their binding sites on PrPC using NMR spectroscopy. GN8 and GJP49 bound specifically to the hot spot in PrPC, and acted as “medical chaperones” to stabilize the native conformation. Thus, mechanisms I was predominant. In contrast, quinacrine and epigallocathechin bound to PrPC rather nonspecifically; these may stabilize the PrPC conformation nonspecifically including the interference with the intermolecular interaction following mechanism II. Congo red and pentosan polysulfate bound to PrPC and caused aggregation and precipitation of PrPC, thus reducing the effective concentration of prion protein. Thus, mechanism III was appropriate. Finally, CP-60, an edarabone derivative, did not bind to PrPC. Thus these were classified into mechanism IV. However, their antiprion activities were not confirmed in the GT + FK system, whose details remain to be elucidated. This proposed antiprion mechanisms of diverse antiprion compounds could help to elucidate their antiprion activities and facilitate effective antiprion drug discovery.

Kamatari, Yuji O; Hayano, Yosuke; Yamaguchi, Kei-ichi; Hosokawa-Muto, Junji; Kuwata, Kazuo

2013-01-01

37

Quantitative phosphoproteomic analysis of prion-infected neuronal cells  

PubMed Central

Prion diseases or transmissible spongiform encephalopathies (TSEs) are fatal diseases associated with the conversion of the cellular prion protein (PrPC) to the abnormal prion protein (PrPSc). Since the molecular mechanisms in pathogenesis are widely unclear, we analyzed the global phospho-proteome and detected a differential pattern of tyrosine- and threonine phosphorylated proteins in PrPSc-replicating and pentosan polysulfate (PPS)-rescued N2a cells in two-dimensional gel electrophoresis. To quantify phosphorylated proteins, we performed a SILAC (stable isotope labeling by amino acids in cell culture) analysis and identified 105 proteins, which showed a regulated phosphorylation upon PrPSc infection. Among those proteins, we validated the dephosphorylation of stathmin and Cdc2 and the induced phosphorylation of cofilin in PrPSc-infected N2a cells in Western blot analyses. Our analysis showed for the first time a differentially regulated phospho-proteome in PrPSc infection, which could contribute to the establishment of novel protein markers and to the development of novel therapeutic intervention strategies in targeting prion-associated disease.

2010-01-01

38

Intra-articular therapy in osteoarthritis.  

PubMed

The medical literature was reviewed from 1968-2002 using Medline and the key words "intra-articular" and "osteoarthritis" to determine the various intra-articular therapies used in the treatment of osteoarthritis. Corticosteroids and hyaluronic acid are the most frequently used intra-articular therapies in osteoarthritis. Other intra-articular substances such as orgotein, radiation synovectomy, dextrose prolotherapy, silicone, saline lavage, saline injection without lavage, analgesic agents, non-steroidal anti-inflammatory drugs, glucosamine, somatostatin, sodium pentosan polysulfate, chloroquine, mucopolysaccharide polysulfuric acid ester, lactic acid solution, and thiotepa cytostatica have been investigated as potentially therapeutic in the treatment of arthritic joints. Despite the lack of strong, convincing, and reproducible evidence that any of the intra-articular therapies significantly alters the progression of osteoarthritis, corticosteroids and hyaluronic acid are widely used in patients who have failed other therapeutic modalities for lack of efficacy or toxicity. As a practical approach for a knee with effusion, steroid injections should be considered while the presence of symptomatic "dry" knees may favour the hyaluronic acid approach. The virtual absence of serious side effects, coupled with the perceived benefits, make these approaches attractive. PMID:12954956

Uthman, I; Raynauld, J-P; Haraoui, B

2003-08-01

39

New and old results in resultant theory  

NASA Astrophysics Data System (ADS)

Resultants play an increasingly important role in modern theoretical physics: they appear whenever we have nonlinear (polynomial) equations, nonquadratic forms, or non-Gaussian integrals. Being a research subject for more than three hundred years, resultants are already quite well studied, and many explicit formulas, interesting properties, and unexpected relations are known. We present a brief overview of these results, from classical ones to those obtained relatively recently. We emphasize explicit formulas that could bring practical benefit in future physical research.

Morozov, A. Yu.; Shakirov, Sh. R.

2010-05-01

40

Autonomous Soaring Flight Results  

NASA Technical Reports Server (NTRS)

A viewgraph presentation on autonomous soaring flight results for Unmanned Aerial Vehicles (UAV)'s is shown. The topics include: 1) Background; 2) Thermal Soaring Flight Results; 3) Autonomous Dolphin Soaring; and 4) Future Plans.

Allen, Michael J.

2006-01-01

41

Results from SAGE  

NASA Astrophysics Data System (ADS)

We report the results of 11 years of solar neutrino observation by the Russian-American Gallium solar neutrino Experiment (SAGE). The overall result of 84 runs during the measurement period January 1990 through March 2001 is 75.6 +5.9/-5.8 (stat.) +3.5/-3.0 (syst.) SNU. This represents only slightly more than half of the predicted standard solar model rate of 129 SNU. The individual results of each run, as well as the results of combined analysis of all runs are presented.

Vermul, V. M.; Abdurashitov, J. N.; Bowles, T. J.; Cherry, M. L.; Cleveland, B. T.; Davis, R.; Elliott, S. R.; Gavrin, V. N.; Girin, S. V.; Gorbachev, V. V.; Ibragimova, T. V.; Kalikhov, A. V.; Khairnasov, N. G.; Knodel, T. V.; Lande, K.; Mirmov, I. N.; Nico, J. S.; Shikhin, A. A.; Teasdale, W. A.; Veretenkin, E. P.; Vermul, V. M.; Wark, D. L.; Wildenhain, P. S.; Wilkerson, J. F.; Yants, V. E.; Zatsepin, G. T.

42

Getting Districtwide Results  

ERIC Educational Resources Information Center

This monograph is based on a keynote presentation by Angus McBeath at the "Getting Districtwide Results" Conference in Long Beach, California, which was co-sponsored by the Cross City Campaign for Urban School Reform and Focus on Results. The author, a former superintendent of the Edmonton Public Schools, how his school district was "forced" and…

McBeath, Angus

2006-01-01

43

Your Kidney Test Results  

MedlinePLUS

... lower the amount of calcium in your bones. Phosphorus Normal: 2.7 to 4.6* Your Result: Phosphorus is important for strong bones and healthy blood ... 65 Your Result: PTH controls the calcium and phosphorus levels in your blood. It is needed to ...

44

Diffraction Results from CDF  

SciTech Connect

We present final results by the CDF II collaboration on diffractive W and Z production, report on the status of ongoing analyses on diffractive dijet production and on rapidity gaps between jets, and briefly summarize results obtained on exclusive production pointing to their relevance to calibrating theoretical models used to predict exclusive Higgs-boson production at the LHC.

Goulianos, Konstantin

2012-04-01

45

Electroweak results from CDF  

SciTech Connect

Inclusive W and Z production cross-sections have been measured by CDF and certain electroweak parameters extracted with high precision from these measurements. New results on diboson production at the Tevatron are also presented.

D. S. Waters

2004-06-02

46

SAPPHIRE: First Results.  

National Technical Information Service (NTIS)

This report presents first results on the availability of Receiver Autonomous Integrity Monitoring (RAIM) onboard of commercial aircraft derived from the EUROCONTROL Flight Trial Programme SAPPHIRE (Satellite and Aircraft Database Programme for System Int...

N. Bondarenco A. Lipp B. Tiemeyer A. Watt

1998-01-01

47

Published Trial Results  

Cancer.gov

Published Trial Results Related Pages Search for Clinical TrialsNCI's List of Cancer Clinical Trials. Ovarian Cancer Home PageNCI's gateway for information about ovarian cancer. Intraperitoneal Chemotherapy of Ovarian Cancer: A Review, With a Focus

48

Electroweak results from CMS  

NASA Astrophysics Data System (ADS)

The latest electroweak results from CMS, based on pp collision data taken at 7 and 8 TeV, are presented. In particular precise measurements of the inclusive and differential cross sections for W and Z boson production, and for multi-boson production are reviewed and compared with theory predictions. Results agree with Standard Model and limits are set on anomalous triple gauge couplings.

Ciulli, V.; CMS Collaboration

2013-08-01

49

Results from MAC  

SciTech Connect

The MAC detector has been exposed at PEP to 40 pb/sup -1/ luminosity of e/sup +/e/sup -/ collisions. The detector is described and recent results of a continuing analysis of hadronic cross section, lepton pair charge asymmetry, Bhabha process, two photon final state and radiative ..mu.. pairs are given. New results on flavor tagging of hadronic events with an inclusive ..mu.., and some searches for new particles are presented.

Chadwick, G.B.

1983-05-01

50

Recent results from CDF  

SciTech Connect

We first present recent CDF results on the top quark, covering the measurement of the t{anti t} production cross section and the top quark mass, the observation of hadronic W decays in top events, the measurement of V{sub tb}, the search for flavor changing neutral current decays, and kinematical properties of t{anti t} production. Then we present one topic from CDF exotic physics results, i.e., the search for first-generation leptoquarks, and one topic from CDF B physics results, i.e., the measurement of time-dependent B{sup 0}-{anti B}{sup 0} mixing. Finally we conclude by briefly mentioning the prospects for Run II.

Takikawa, K. [Tsukuba Univ., Ibaraki (Japan); CDF

1998-02-15

51

DES Gravitational Lensing Results  

NASA Astrophysics Data System (ADS)

I will give an overview of the current state of the weak-lensing data analysis, focussing on systematics tests to validate the quality of the survey images, and highlight the first results obtained from observations during the Science Verification period.

Melchior, Peter

2014-01-01

52

Results from CDMS II  

NASA Astrophysics Data System (ADS)

The Cryogenic Dark Matter Search (CDMS II) employs low-temperature detectors to search for interactions of WIMPs while discriminating against interactions of background particles. In 2004 we completed the experiment's first two runs at the Soudan Underground Laboratory, for which the background from neutrons is negligible. For the first run, four Ge and two Si detectors were operated for 52.6 live days, resulting in the world's lowest exclusion limits on the coherent WIMP-nucleon scalar cross-section for all WIMP masses above 15 GeV, and ruling out a significant range of neutralino supersymmetric models. The second run included twice the number of detectors and lasted longer than the first, resulting in an exposure of approximately 100 kg days. A blind analysis was performed using only calibration data to define the energy threshold and selection criteria for WIMP candidates. Results of this second, most recent dataset will be presented and compared to previously published results. We will discuss the plans for future running and the projected sensitivity.

Schnee, Richard

2005-04-01

53

Payment by Results.  

National Technical Information Service (NTIS)

The purpose of this study is to help persons participating in the design of payment to decide whether it would be useful for them to adopt payment by results and, if so, what form it should take. To facilitate the reader's choice, the book goes beyond the...

1984-01-01

54

Resultative Verb Compounds.  

ERIC Educational Resources Information Center

Demonstrates that structure and interpretation of Resultative Verb Compound (RVC) in the field of Chinese linguistics is neither indiosyncratic nor pragmatically determined as suggested in an earlier study. Rather, RCV formation and interpretation is determined by semantic features of verbs, and these features determine the well-formedness and…

Ross, Claudia

1990-01-01

55

OTELO project: first results  

NASA Astrophysics Data System (ADS)

The OTELO project is the extragalactic survey currently under way using the tunable filters of theinstrument OSIRIS at the GTC. OTELO is providing the deepest emission line object survey of the universe up to a redshift 7. In this contribution, the first images will be shown together with some preliminary results.

Cepa, J.; Bongiovanni, A.; Pérez-García, A. M.; Alfaro, E. J.; Castañeda, H. O.; Ederoclite, A.; González, J. J.; González-Serrano, J. I.; Sánchez-Portal, M.; Bland-Hawthorn, J.; Heath Jones, D.; Gallego, J.; Acosta-Pulido, J.; Esteban, C.; Rodríguez-Espinosa, J. M.

2011-11-01

56

Recent CDF results  

SciTech Connect

As of November of 2007, the CDF detector has recorded approximately 2.7 fb{sup -1} of data. This contribution describes some of the most recent and most relevant results from the CDF collaboration in all areas of its wide physics program, as well as some insights into the Tevatron reach for Higgs searches within the next few years.

Gomez, Gervasio; /Cantabria Inst. of Phys.

2007-11-01

57

Hybrid results merging  

Microsoft Academic Search

The problem of results merging in distributed information retrieval environments has been approached by two different directions in research. Estimation approaches attempt to calculate the relevance of the returned documents through ad-hoc methodologies (weighted score merging, regression etc) while download approaches, download all the documents locally, partially or completely, in order to estimate \\

Georgios Paltoglou; Michail Salampasis; Maria Satratzemi

2007-01-01

58

QCD results from CDF  

SciTech Connect

Results are presented for hadronic jet and direct photon production at {radical}{bar s} = 1800 GeV. The data are compared with next-to-leading QCD calculations. A new limit on the scale of possible composite structure of the quarks is also reported. 12 refs., 4 figs.

Plunkett, R.; The CDF Collaboration

1991-10-01

59

Latest Results from BESIII  

NASA Astrophysics Data System (ADS)

Recent results of the BESIII experiment are presented, including the first observation of the M1 transition ?(3686) ? ??c(2S), the measurement of J/? ? 3?, ?c decays into baryon anti-baryon pairs, the discovery of Zc(3900), and the study of J/? -> ? p \\bar {p}.

Liang, Yutie

2014-01-01

60

New Results from Belle  

NASA Astrophysics Data System (ADS)

In this paper, some of the new results from the Belle experiment are reviewed. In particular, we report new measurements on the CP violation in B ? ?KS and related modes. We also present Belle's new measurements on the recently discovered unusual hadrons states DsJ(2317), DsJ(2457), and X(3872).

Kwon, Youngjoon

2004-08-01

61

Recent Results from HAPPEX.  

National Technical Information Service (NTIS)

New measurements of the parity-violating asymmetry in elastic scattering of 3GeV electrons off hydrogen and helium-4 targets at theta(sub lab) = 6 degrees are reported. The helium-4 result is A = (+6.40 (+-) 0.23 (stat) (+-) 0.12 (syst)) * 10(sup -6). The...

R. Materials

2006-01-01

62

Multifactor Screener: Validation Results  

Cancer.gov

These validation results suggest that dietary exposure estimates computed for the Cancer Control Supplement may be useful to compare subgroup means, especially for populations consuming mainstream diets. The estimates may be less useful for populations with more ethnic diets, including Asian and possibly Latino populations.

63

Cleanroom energy benchmarking results  

SciTech Connect

A utility market transformation project studied energy use and identified energy efficiency opportunities in cleanroom HVAC design and operation for fourteen cleanrooms. This paper presents the results of this work and relevant observations. Cleanroom owners and operators know that cleanrooms are energy intensive but have little information to compare their cleanroom's performance over time, or to others. Direct comparison of energy performance by traditional means, such as watts/ft{sup 2}, is not a good indicator with the wide range of industrial processes and cleanliness levels occurring in cleanrooms. In this project, metrics allow direct comparison of the efficiency of HVAC systems and components. Energy and flow measurements were taken to determine actual HVAC system energy efficiency. The results confirm a wide variation in operating efficiency and they identify other non-energy operating problems. Improvement opportunities were identified at each of the benchmarked facilities. Analysis of the best performing systems and components is summarized, as are areas for additional investigation.

Tschudi, William; Xu, Tengfang

2001-09-01

64

Dosimetric results on EURECA  

NASA Technical Reports Server (NTRS)

Detector packages were exposed on the European Retrievable Carrier (EURECA) as part of the Biostack experiment inside the Exobiology and Radiation Assembly (ERA) and at several locations around EURECA. The packages consist of different plastic nuclear track detectors, nuclear emulsions and thermoluminescence dosimeters (TLD's). Evaluation of these detectors yields data on absorbed dose and particle and LET spectra. Preliminary results of absorbed dose measurements in the EURECA dosimeter packages are reported and compared to results of the LDEF experiments. The highest dose rate measured on EURECA is 63.3 plus or minus 0.4 mGy d(exp -1) behind a shielding thickness of 0.09 g cm(exp -2) in front of the detector package.

Reitz, G.

1995-01-01

65

DES Galaxy Cluster Results  

NASA Astrophysics Data System (ADS)

The Dark Energy Survey (DES) is a 5 year, 5000 square degree photometric survey in 5 bands (grizY), with the primary goals of exploring the cause of cosmic acceleration and to trace the growth of structure. Probing the growth of structure via clusters of galaxies, the most massive bound structures in the Universe, is one of the key Dark Energy probes of DES as they provide one of the best ways to distinguish between a cosmological constant and deviations from General Relativity on cosmological scales. From November 2012 through February 2013 DES performed a "science verification" observing campaign (SVA1), covering over 100 deg^2 in the southern sky to full DES depth. Here we describe early results from galaxy clusters from SVA1, including a new measurement of the red galaxy conditional luminosity function to 1. We also show how these results inform our catalog simulation work for better predictions of the DES performance after the full 5 year survey.

Rykoff, Eli S.; DES Cluster Working Group

2014-01-01

66

Results from SAGE II  

SciTech Connect

The Russian-American Gallium solar neutrino Experiment (SAGE) began the second phase of operation (SAGE II) in September of 1992. Monthly measurements of the integral flux of solar neutrinos have been made with 55 tonnes of gallium. The K-peak results of the first nine runs of SAGE II give a capture rate of 66{sub -13}{sup +18} (stat) {sub -7}{sup +5} (sys) SNU. Combined with the SAGE I result of 73{sub -16}{sup +18} (stat) {sub -7}{sup 5} (sys) SNU, the capture rate is 69{sub -11}{sup +11} (stat) {sub -7}{sup +5} (sys) SNU. This represents only 52%--56% of the capture rate predicted by different Standard Solar Models.

Nico, J.S.

1994-10-01

67

ATLAS beam test results  

NASA Astrophysics Data System (ADS)

Many different configurations of electronics and semiconductor strip detectors were studied in 1995 using the ATLAS tracking detector test area at the H8 beam-line of the CERN SPS. A significant fraction of these investigations are presented elsewhere in this volume and this paper will concentrate on the results with silicon strip detectors read out with electronics preserving the pulse height information. Data has been collected with the ADAM, APV5 and FElix read-out chips on a number of different detectors. The first results are presented for read out with LHC electronics of detectors to the ATLAS-A specification of 112.5 ?m pitch, employing n-strips in n-type silicon, capacitive coupling and intermediate strips. It is demonstrated that with adequate signal/noise, a spatial resolution of ?13 ?m is attainable with these detectors.

Beringer, J.; Borer, K.; Dawson, I.; Dowell, J. D.; Homer, R. J.; Kenyon, I. R.; Oglesby, S. J.; Shaylor, H. R.; Wilson, J. A.; Carter, J. R.; Goodrick, M. J.; Hill, J. C.; Munday, D. J.; Parker, M. A.; Robinson, D.; Wyllie, K. H.; Anghinolfi, F.; Boulter, B.; Kappes, A.; Langhans, W.; Ratz, K.; Roe, S.; Weilhammer, P. E.; Gadomski, S.; Godlewski, J.; Kaplon, J.; Andrle, J.; Stavropoulos, G.; Bonino, R.; Clark, A. G.; Couyoumtzelis, C.; Demierre, Ph.; LaMarra, D.; Allport, P. P.; Booth, P. S. L.; Bowcock, T. J. V.; Green, C.; Greenall, A.; hanlon, M.; Jackson, J. N.; Jones, T. J.; Richardson, J. D.; Smith, N. A.; Turner, P. R.; Tzamarias, S. E.; Beck, G. A.; Carter, A. A.; Newman-Coburn, D.; Pritchard, T. W.; Fares, F.; Moorhead, G. F.; Taylor, G. N.; Holt, A.; Nygård, E.; Ødegård, T.; Østby, J.; Stapnes, S.; Sundal, B.; von der Lippe, H.; Brooks, C. B.; Grewal, A. S.; Nickerson, R. B.; Shield, P.; Weidberg, A. R.; Apsimon, R. J.; Bizzell, J.; Gibson, M. D.; Murray, W.; Morrisey, M. C.; Tyndel, M.; Albiol, F.; Fuster, J.

1996-02-01

68

Summary of scientific results  

NASA Technical Reports Server (NTRS)

The major scientific results of the Apollo 15 flight are summarized. The objectives of the flight are given as: (1) to carry out extensive geological exploration, comprehensive sampling, and photographic documentation of the Apennine Front at Hadley Delta, Hadley Rille, and the mare plain, (2) to emplace the ALSEP near the landing site, and (3) to perform a series of survey experiments with the scientific instrument module (SIM) equipment from lunar orbit and during transearth coast.

Allen, J. P.

1972-01-01

69

MELCOR validation results  

Microsoft Academic Search

Recent comparisons of MELCOR predictions to three sets of experiments, the ABCOVE Aerosol Experiments, the HDR-V44 Steam Blowdown Experiments, and the Battelle-Frankfurt Gas Mixing Experiments are presentd. All three comparisons involve conditions that are of concern in an LWR containment during a severe accident. MELCOR results are compared to the experimental data and the predictions of at least one other

C. D. Leigh; R. K. Byers; C. J. Shaffer

1986-01-01

70

PDX experimental results  

SciTech Connect

The main objectives of the Poloidal Divertor Experiment (PDX) are to: (1) determine the effectiveness of poloidal divertors in controlling impurities in high temperature plasmas, (2) use the poloidal divertor to provide clean plasmas for confinement and high beta studies, and (3) investigate the effect of cross-section shaping on plasma confinement and MHD properties. In this paper, we report the results obtained during initial divertor operation of the PDX.

Meade, D.; Arunasalam, V.; Barnes, C.

1981-01-01

71

Secular resonances - New results  

Microsoft Academic Search

Results are presented from a numerical integration, in the frame of the four-body problem sun-Jupiter-Saturn-asteroid, of the orbit of the asteroid 1974 MA. This asteroid is an earth-crosser located in a region where three resonances overlap: the two secular resonances nu5 and nu6 and the mean motion resonance 5\\/1. The numerical integration yields a qualitative orbital evolution of this particular

Ch. Froeschle; H. Scholl

1988-01-01

72

Results from SAGE  

SciTech Connect

The Russian-American Gallium Solar Neutrino Experiment (SAGE) is described. Beginning in September 1992, SAGE II data were taken with 55 tons of Ga and with significantly reduced backgrounds. The solar neutrino flux measured by 31 extractions through October 1993 is presented. The result of 69 {+-} 10 +5/{minus}7 SNU is to be compared with a Standard Solar Model prediction of 132 SNU.

Abdurashitov, J.N.; Gavrin, V.N.; Girin, S.V. [Russian Academy of Sciences, Moscow (Russian Federation). Inst. for Nuclear Research] [and others

1996-04-01

73

Space Shuttle radargrammetry results  

NASA Technical Reports Server (NTRS)

Preliminary results on the radargrammetric processing of SIR-A and SIR-B data are presented. Radargrammetric processing was applied to images of the Trinity National Forest in Northern California, the islands of Cephalonia, Ithaka, and Sardegna, Mt. Shasta, and Cordon La Grasa, Argentina. The preliminary processing of the SIR-A and SIR-B data has produced digital elevation models, stereo models, and a contour map.

Leberl, F.; Domik, G.; Raggam, J.; Cimino, J.; Kobrick, M.

1986-01-01

74

Recent results from BESIII  

NASA Astrophysics Data System (ADS)

Selected results of BESIII are reported, including the observation of charged, charmonium-like states, the Zc(3900), Zc(4020), and Zc(4025); observation of e+e- ? ?X(3872); study of ?? system in J/? ? ???; baryon excited study in ? (3686)-> p\\bar p? 0; precise measurements of the decay constant fD from D+ ? ?+? and form-factors in D0 ? K-e+?,?-e+?.

Ji, Xiao-Bin

2014-04-01

75

Recent LHCb Results  

NASA Astrophysics Data System (ADS)

This article contains a summary of results obtained by the LHCb experiment at CERN concerning CP violation and rare decays of b quarks, obtained from 7-8 TeV pp collisions at the LHC. Particular attention is given to recent constraints to new physics beyond the Standard Model, derived from observations of precision observables involving leptonic final states. These include dimuon decays of B-mesons, b ? s?+?- transitions, and first precision measurements of the CKM matrix phases ?s and ?.

Adeva, B.

2014-03-01

76

The Viking biology results  

NASA Technical Reports Server (NTRS)

A brief review of the purposes and the results from the Viking Biology experiments is presented, in the expectation that the lessons learned from this mission will be useful in planning future approaches to the biological exploration of Mars. Since so little was then known about potential micro-environments on Mars, three different experiments were included in the Viking mission, each one based on different assumptions about what Martian organisms might be like. In addition to the Viking Biology Instrument (VBI), important corollary information was obtained from the Viking lander imaging system and from the molecular analysis experiments that were conducted using the gas chromatograph-mass spectrometer (GCMS) instrument. No biological objects were noted by the lander imaging instrument. The GCMS did not detect any organic compounds. A description of the tests conducted by the Gas Exchange Experiment, the Labeled Release experiment, and the Pyrolytic Release experiment is given. Results are discussed. Taken as a whole, the Viking data yielded no unequivocal evidence for a Martian biota at either landing site. The results also revealed the presence of one or more reactive oxidants in the surface material and these need to be further characterized, as does the range of micro-environments, before embarking upon future searches for extant life on Mars.

Klein, Harold P.

1989-01-01

77

Results of railgun experiments  

SciTech Connect

During the 1979 Megagauss II conference the hypervelocity potential of railguns and the pulsed power technology needed to power them were discussed. Since then, many laboratories have initiated railgun R and D projects for a variety of potential applications. Los Alamos and Lawrence Livermore National Laboratories initiated a collaborative experimental railgun project which resulted in several successes in accelerating projectiles to high velocities, emphasized the limits on railgun operation, and indicated that the numerical modeling of railgun operation was in good agreement with the experiments.

Hawke, R.S.; Brooks, A.L.; Fowler, C.M.; Peterson, D.R.

1983-04-01

78

Recent CDF results  

SciTech Connect

Preliminary results form the CDF detector, based on analysis of data collected in Run 1a and Run 1b at the Tevatron, totaling 110 pb{sup - 1} integrated luminosity, place new limits on the masses and couplings of new particles including charged Higgs bosons, supersymmetric gauge particles and quarks, and new vector bosons. One of the observed events, having an {ital e}{sup +}{ital e}{sup -} pair, two photons, and large missing energy would not occur with significant rate in the Standard Model, leading to speculation regarding its origin and the possible existence of related events.

Conway, J.S. [Rutgers--the State Univ., Piscataway, NJ (United States). Dept. of Physics and Astronomy; CDF Collaboration

1996-07-01

79

First Results from GNO  

NASA Astrophysics Data System (ADS)

GNO is the Gran Sasso experiment devoted to the measurement of the solar neutrino interaction rate in Gallium. It started to take solar data in 1998. Characteristics of the experimental apparatus are reported. The GNO I result from solar runs SR1-SR19 (corresponding to the period May 20, 1998 to January 12, 200) at 1 ? level is 65.8 -9.6+10.2( stat.) -3.6+3.4( syst.) or 65.8 -10.2+10.7 SNU (with errors combined in quadrature). Future plans are also briefly presented.

Bellotti, E.

80

Relativistic klystron experimental results  

SciTech Connect

Relativistic klystrons are being developed as a power source for high-gradient accelerator applications which include compact accelerators, large linear electron-positron colliders, and FEL sources. We have attained 200 MW peak power at 11.4 GHz from a relativistic klystron, and 140 MV longitudinal gradient in a short 1.4-GHz accelerator section. We report here on the design of our first klystrons, the results of our experiments so far, and some of our plans for the near future. 4 refs., 1 fig., 1 tab.

Westenskow, G.A.

1988-10-27

81

[Ureteroscopy. Experience and results].  

PubMed

Ureteroscopy is an Endo-urological procedure which has been practiced around the world in all teaching centers of Urology. It presents obvious advantages. Our experience has been satisfactory, not only due to the coordinated and joint work, but for the results obtained in behalf of our patients who went back to their regular activities shortly after. As all the new procedures, it has a learning curve which is given after the initial training has been acquired but its performance will give expertise, same as radiologic technology and the development of new instruments with smaller diameter and accessories which allow the easier access to ureter and lithotripsy. PMID:1767038

Delgado, G; Alvarado, A; de Solanilla, E C

1991-09-01

82

Sakhalin tender results detailed  

SciTech Connect

Given uncertainty over a final verdict for the Sakhalin Island tender announced in May 1991, upon instructions from the Russian Federation government, a government committee (GC) was constituted and headed by V. Danilov-Danilyan, Russia's Minister for Ecology and Natural Resources, to synthesize the results of and select the winner of the tender. This paper describes the GC and the measures that the GC took in order to determine what company would be permitted to conduct a feasibility study and later develop oil and gas resources off Sakhalin Island.

Konoplyanik, A.A. (Russian Federation Ministry for Fuels and Energy (SU))

1992-04-20

83

Lithium cell test results  

NASA Technical Reports Server (NTRS)

Three lithium SO2 cells, two lithium CF cells, and a vinyl chloride cell, all with crimped seals, and all strictly experimental, were independently discharged on resistors. Three temperatures were used and several different storage temperatures. Discharge rate generally on the nominal discharges were 0.1 amp, 0.5 amp, and 1 amp. Tests results show that the crimp seals are inadequate, especially for the SO2 cells. Normal discharges present no hazards. All cells discharge to zero. The problem of lithium cell explosions, such as occurred during off-limits testing, is discussed.

Bragg, B. J.

1977-01-01

84

GOSAT TANSO operation results  

NASA Astrophysics Data System (ADS)

The Greenhouse gases Observing SATellite (GOSAT) observes carbon dioxide (CO2) and methane (CH4) globally from space. It was launched on January 23, 2009 from Tanegashima Space Center. Since February 7, 2009, the Thermal And Near infrared Sensor for carbon Observation Fourier-Transform Spectrometer (TANSO-FTS) and Cloud and Aerosol Imager (TANSO-CAI) have been continuously operated. They acquire global data every three days. For the first six months after the launch, on-orbit function, performance, calibration, and validation have been checked-out. The brief summary of instrument design, pre-launch test results, observation plan (grid and sun glint observation and special target mode), onboard calibration schemes, and the initial on-orbit results of radiometric, geometric and spectroscopic performances are presented. TANSO-FTS Level 1A and 1B data processing algorithm and its updates on the ground are also presented. In addition we will show recent on orbit instrument status such as pointing accuracy, interferogram quality, and radiometric accuracy.

Nakajima, Masakatsu; Kuze, Akiihiko; Suto, Hiroshi; Shiomi, Kei

2010-05-01

85

New Results with TECSA  

NASA Astrophysics Data System (ADS)

The Texas A&M-Edinburgh-Catania Silicon detector Array (TECSA) is a collaborative effort to build a high-efficiency detector Si array useful for measuring reactions of interest for nuclear astrophysics and nuclear structure. The array consists of up to 16 Micron Semiconductor YY1 detectors that are each 300 ?m thick. Each detector has 16 annular ring sectors to measure the energy and the scattering angle of the detected particles. So far, we have conducted two experiments with TECSA at Cyclotron Institute at Texas A&M Univ. In the first, we measured the d(^14C,p)^15C reaction at 11.7 MeV/u. In the second, we measured d(^26Al,p)^27Al with an ^26Al secondary beam prepared in-flight with MARS. Angular distributions were obtained for both reactions at backward angles. The protons were measured both as singles events and in coincidence with timing signals from the cyclotron RF and a scintillator to measure coincidence between the protons and the beam. Results of the data analysis for the d(^14C,p)^15C run and preliminary results from the d(^26Al,p)^27Al run will be presented. Also, prospects for the future use of this detector array will be discussed.[0pt] ^*Work supported by US DOE, INFN and STFC (UK).

Roeder, B. T.; McCleskey, M.; Trache, L.; Alharbi, A. A.; Banu, A.; Goldberg, V. Z.; Simmons, E.; Spiridon, A.; Tribble, R. E.; Cherubini, S.; Gulino, M.; Pizzone, R. G.; Sparta, R.; Spitaleri, C.; Davinson, T.; Wallace, J.; Woods, P. J.

2011-10-01

86

Recent Results from HAPPEX  

SciTech Connect

New measurements of the parity-violating asymmetry in elastic scattering of 3GeV electrons off hydrogen and helium-4 targets at theta{sub lab} = 6 degrees are reported. The helium-4 result is A = (+6.40 {+-} 0.23 (stat) {+-} 0.12 (syst)) * 10{sup -6}. The hydrogen result is A = (-1.58 {+-} 0.12 (stat) {+-} 0.04 (syst)) * 10{sup -6}. The asymmetry for hydrogen is a function of a linear combination of G{sub E}{sup s} and G{sub M}{sup s}, the strange quark contributions to the electric and magnetic form factors of the nucleon respectively, and that for helium-4 is a function solely of G{sub E}{sup s}. The combination of the two measurements separates G{sub E}{sup s} and G{sub M}{sup s} and provide new limits on the role of strange quarks in the nucleon charge and magnetization distributions. We extract G{sub E}{sup s} = 0.002 {+-} 0.014 {+-} 0.007 at Q{sup 2} = 0.077 GeV{sup 2} and G{sub E}{sup s} + 0.09 G{sub M}{sup s} = 0.007 {+-} 0.011 {+-} 0.006 at Q{sup 2} = 0.109 GeV{sup 2}.

Robert Michaels

2006-09-18

87

Spacelab Science Results Study  

NASA Technical Reports Server (NTRS)

Beginning with OSTA-1 in November 1981 and ending with Neurolab in March 1998, a total of 36 Shuttle missions carried various Spacelab components such as the Spacelab module, pallet, instrument pointing system, or mission peculiar experiment support structure. The experiments carried out during these flights included astrophysics, solar physics, plasma physics, atmospheric science, Earth observations, and a wide range of microgravity experiments in life sciences, biotechnology, materials science, and fluid physics which includes combustion and critical point phenomena. In all, some 764 experiments were conducted by investigators from the U.S., Europe, and Japan. The purpose of this Spacelab Science Results Study is to document the contributions made in each of the major research areas by giving a brief synopsis of the more significant experiments and an extensive list of the publications that were produced. We have also endeavored to show how these results impacted the existing body of knowledge, where they have spawned new fields, and if appropriate, where the knowledge they produced has been applied.

Naumann, R. J.; Lundquist, C. A.; Tandberg-Hanssen, E.; Horwitz, J. L.; Germany, G. A.; Cruise, J. F.; Lewis, M. L.; Murphy, K. L.

2009-01-01

88

MINOS neutrino oscillation results  

NASA Astrophysics Data System (ADS)

Neutrinos interact only weakly with other matter and had been thought to be massless. However, if their mass is non-zero, they could change flavors as they propagate. Recent results from observations of atmospheric, solar, and reactor neutrinos indicate that they do change flavor and these observations have provided measurements of two of the three possible mixings. The MINOS experiment is now making precise measurements of the ??? oscillations seen in atmospheric neutrinos, and extends our reach towards the so far unseen angle ?3 by looking for ? appearance from the ? beam. It does so by using the intense, well-understood NuMI neutrino beam created at Fermilab and observing it 735 km away at the Soudan Mine in Northeast Minnesota. This combination also allows investigation of the oscillation properties of anti-neutrinos, as the NuMI beam can focus opposite-charged pions to produce the anti-neutrinos, and the MINOS detectors are magnetized, allowing event-by-event discrimination of the resulting muon charge-sign.

Habig, A.; Minos Collaboration

89

DES Supernova Results  

NASA Astrophysics Data System (ADS)

The Dark Energy Survey Supernova program (DES SN) will discover approximately 3500 Type Ia supernovae with well-sampled multi-color light curves in the redshift range 0.2 < z < 1.2 over its five year duration. The large field of view and high z-band sensitivity of the Dark Energy Camera, combined with the precision photometry of DES and an improved handling of systematic uncertainties will allow DES SN to provide the strongest constraints on supernova cosmology to date. One of the main challenges for DES SN will be accurate classification of such a large number of faint transients. I will describe the unique spectroscopic follow-up strategy that we are employing, with emphasis on the 100 night, survey-status program at AAT which began in September. I will present preliminary supernova results obtained from the DES Science Verification period and the beginning of DES Year 1.

D'Andrea, Christopher; Dark Energy Survey, The

2014-01-01

90

MELCOR validation results  

SciTech Connect

Recent comparisons of MELCOR predictions to three sets of experiments, the ABCOVE Aerosol Experiments, the HDR-V44 Steam Blowdown Experiments, and the Battelle-Frankfurt Gas Mixing Experiments are presentd. All three comparisons involve conditions that are of concern in an LWR containment during a severe accident. MELCOR results are compared to the experimental data and the predictions of at least one other state-of-the-art code for each test. In the ABCOVE comparisons, the MELCOR aerosol modeling is demonstrated. In comparisons to the HDR-V44 Steam Blowdown Experiments, MELCOR predictions of the response of the containment to the release of steam from the primary system are shown, and in the Battelle-Frankfurt comparisons, MELCOR predictions of the diffusion in a containment of an injected hydrogen-nitrogen gas are studied. These comparisons provide critical testing of the MELCOR control volume hydrodynamics package, the radionuclide package, and the flow path package.

Leigh, C.D.; Byers, R.K.; Shaffer, C.J.

1986-01-01

91

Initial Results from CALIPSO  

NASA Technical Reports Server (NTRS)

CALIPSO will carry the first polarization lidar in orbit, along with infrared and visible passive imagers, and will fly in formation as part of the Afternoon Constellation (A-train). The acquisition of observations which are simultaneous and coincident with observations from other instruments of the A-train will allow numerous synergies to be realized from combining CALIPSO observations with observations from other platforms. In particular, cloud observations from the CALIPSO lidar and the CloudSat radar will complement each other, together encompassing the variety of clouds found in the atmosphere, from thin cirrus to deep convective clouds. CALIPSO has been developed within the framework of a collaboration between NASA and CNES and is currently scheduled to launch, along with the CloudSat satellite, in spring 2006. This paper will present an overview of the CALIPSO mission, including initial results.

Winker, David M.; Pelon, Jacques; McCormick, M. Patrick

2006-01-01

92

WINCS Laboratory Performance Results  

NASA Astrophysics Data System (ADS)

The Winds-Ions-Neutral Composition Suite (WINCS) instrument was designed and developed jointly by the Naval Research Laboratory (NRL) and NASA/Goddard Space Flight Center (GSFC) for ionosphere-thermosphere investigations in orbit between 120 and 550 km altitude. The WINCS design provides the following measurements in a single package with a low Size, Weight, and Power (SWaP): 7.6 x 7.6 x 7.1 cm outer dimensions, 0.75 kg total mass, and about 1.3 Watt total power: neutral winds, neutral temperature, neutral density, neutral composition, ion drifts, ion temperature, ion density and ion composition. Initial laboratory performance and calibration results will be presented on the WINCS sensor.

Nicholas, A. C.; Herrero, F.; Finne, T. T.; Jones, H. H.; Roman, P.; Bichell, J.; Wincs Sensor Team

2011-12-01

93

Top physics: CDF results  

SciTech Connect

The top quark plays an important role in the grand scheme of particle physics, and is also interesting on its own merits. We present recent results from CDF on top-quark physics based on 100-200 pb{sup -1} of p{bar p} collision data. We have measured the t{bar t} cross section in different decay modes using several different techniques, and are beginning our studies of top-quark properties. New analyses for this conference include a measurement of {sigma}{sub t{bar t}} in the lepton-plus-jets channel using a neural net to distinguish signal and background events, and measurements of top-quark branching fractions.

K. Bloom

2004-06-23

94

Iron Mountain Electromagnetic Results  

SciTech Connect

Iron Mountain Mine is located seventeen miles northwest of Redding, CA. After the completion of mining in early 1960s, the mine workings have been exposed to environmental elements which have resulted in degradation in water quality in the surrounding water sheds. In 1985, the EPA plugged ore stoops in many of the accessible mine drifts in an attempt to restrict water flow through the mine workings. During this process little data was gathered on the orientation of the stoops and construction of the plugs. During the last 25 years, plugs have begun to deteriorate and allow acidic waters from the upper workings to flow out of the mine. A team from Idaho National Laboratory (INL) performed geophysical surveys on a single mine drift and 3 concrete plugs. The project goal was to evaluate several geophysical methods to determine competence of the concrete plugs and orientation of the stopes.

Gail Heath

2012-07-01

95

FIRE Science Results 1989  

NASA Technical Reports Server (NTRS)

FIRE (First ISCCP Regional Experiment) is a U.S. cloud-radiation research program formed in 1984 to increase the basic understanding of cirrus and marine stratocumulus cloud systems, to develop realistic parameterizations for these systems, and to validate and improve ISCCP cloud product retrievals. Presentations of results culminating the first 5 years of FIRE research activities were highlighted. The 1986 Cirrus Intensive Field Observations (IFO), the 1987 Marine Stratocumulus IFO, the Extended Time Observations (ETO), and modeling activities are described. Collaborative efforts involving the comparison of multiple data sets, incorporation of data measurements into modeling activities, validation of ISCCP cloud parameters, and development of parameterization schemes for General Circulation Models (GCMs) are described.

Mcdougal, David S. (editor)

1990-01-01

96

Fish community results  

SciTech Connect

The Tennessee Valley Authority (TVA) operates 9 reservoirs on the Tennessee River and 37 reservoirs on its tributaries. TVA is committed to maintaining the health of aquatic resources created when the reservoir system was built. To that end, TVA in cooperation with Valley states, operates a water resource monitoring program that includes physical, chemical, and biological data collection components. Biological monitoring will target the following selected elements within three zones of the reservoir (inflow, transition, and forebay): Sediment/Water-column Acute Toxicity Screening, Benthic macroinvertebrates, and Fish. Reservoir fisheries monitoring is divided into the following activities: Fish Biomass, Fish Tissue Contamination, Fish Community Monitoring, and Fish Health Assessment. This report presents the results of fish community monitoring and fish health assessments.

Hickman, G.D.; Scott, E.M. Jr.; Brown, A.M.

1991-05-01

97

System results from FRECOPA  

NASA Technical Reports Server (NTRS)

The work carried out over the past three years on FRECOPA and the LDEF has enabled a large quantity of information to be collected, part of which has already been exploited. As far as CNES is concerned, the major spin-offs of this mission mainly focus on the orbital environment and the behavior of materials in such an environment. With respect to the environment, the authors shall develop the lessons learned from expert appraisals on impacts by microparticles, which are the main feature observed in this area. As for the materials, the results show a variety of behavior when subjected to the space environment and even now constitute a wealth of information for the designing and validation of future mechanical systems. Apart from these direct spin-offs, there are repercussions on in-flight and ground testing, the calibration of test benches and improvements to simulation models.

Durin, Christian; Berthoud, Lucinda; Mandeville, Jean-Claude

1995-01-01

98

New results from Belle  

NASA Astrophysics Data System (ADS)

We have measured the CP violation parameters in B° decays to the following CP eigenstates: (c overlinec)K s, J/?K L, J/?K -0, ? +? -, ?K s, ?/K sand K +K -K s, using data collected with the Belle detector at the KEKB asymmetric-energy e +e - collider. One of the angles of the CKM unitality triangle, ?1, has been determined using 78 fb -1 as sin 2 ?1 = 0.719 ± 0.074 ± 0.035. The large A?? is an indication of direct CP violation in B meson decay. The S?K, S?' K are SKKK are all consistent with sin 2 ?1 within 3?. We also present the first measurement o the inclusive branching fraction for the electroweak penguin decay B ? Xs? +? -. The results on the branching fraction, dilepton and recoil mass spectra are in agreement with the Standard Model expectations.

Yamauchi, M.

2003-04-01

99

Double Chooz Results  

NASA Astrophysics Data System (ADS)

We report the latest results on ?13 measurement from the Double Chooz experiment based on 33.71 GW-ton-years exposure (reactor power × target mass × live-time) to electron antineutrinos from the CHOOZ reactor power plant in France. The Double Chooz detector is located at a distance of 1050 m where deficit of electron antineutrinos is expected with non-zero ?13 neutrino mixing angle. We observed 8,249 antineutrino candidates while 8,937 events are expected in case of ?13=0. The deficit is interpreted as an evidence for electron antineutrino disappearance. From a fit to the observed energy spectrum, we obtained sin2 2?13=0.109±0.030(stat)±0.025(syst).

Ishitsuka, M.

2013-02-01

100

2012 election results  

NASA Astrophysics Data System (ADS)

On 4 October 2012, AGU members completed voting for the 2013-2014 leadership term. Union officers, Board members, section and focus group officers, and student and early career representatives to the Council were elected. All members who joined or renewed their membership by 1 July 2012 were eligible to vote in this year's leadership election. The vote was held electronically, and access to voting was provided to all eligible voters for a period of 31 days. The voting was conducted by Survey and Ballot Systems, Inc. (SBS). SBS, which offers election planning and management services, provided unique login credentials and other support services for eligible voters throughout the election. Voting results were certified by SBS on 8 October and by the AGU Tellers Committee on 9 October. The overall participation rate was 21.9%, an increase over previous AGU elections.

Robinson, Robert; Tetzlaff, Doerthe

2012-10-01

101

Results from SNO  

SciTech Connect

The Sudbury Neutrino Observatory (SNO) is an underground heavy water Cherenkov detector for studying solar neutrinos. SNO is capable of performing both flavor sensitive and flavor blind measurements of the solar neutrino flux. The first charged current (CC) measurement is found to be: {psi}{sub SNO}{sup CC}({nu}{sub e}) = 1.75 {+-} 0.07(stat.){sub -0.11}{sup +0.12}(sys.) {+-} 0.05 (theor.) x 10{sup 6} cm{sup -2}s{sup -1} and the elastic scattering fluxes (ES) is: {psi}{sub SNO}{sup ES}({nu}{sub x}) = 2.39 {+-} 0.34(stat.){sub -0.14}{sup +0.16} (sys.) x 10{sup 6} cm{sup -2}s{sup -1}. The {psi}{sub SNO}{sup CC}({nu}{sub e}) result, when combined with the high statistics elastic scattering (ES) measurement from Super-Kamiokande, provide a strong evidence for solar neutrino flavor transformation (3.3{sigma}). The deduced total solar neutrino flux is in good agreement with standard solar model predictions. No significant distortion in the energy spectrum is observed.

Chan, Yuen-dat

2001-10-01

102

LSND neutrino oscillation results  

SciTech Connect

The LSND (Liquid Scintillator Neutrino Detector) experiment at Los Alamos has conducted a search for muon antineutrino {r_arrow} electron antineutrino oscillations using muon neutrinos from antimuon decay at rest. The electron antineutrinos are detected via the reaction electron antineutrino + proton {r_arrow} positron + neutron, correlated with the 2.2-MeV gamma from neutron + proton {r_arrow} deuteron + gamma. The use of tight cuts to identify positron events with correlated gamma rays yields 22 events with positron energy between 36 and 60 MeV and only 4.6 {+-} 0.6 background events. The probability that this excess is due entirely to a statistical fluctuation is 4.1 {times} 10{sup -8}. A chi-squared fit to the entire positron sample results in a total excess of 51.8 {sup +18.7}{sub -16.9} {+-} 8.0 events with positron energy between 20 and 60 MeV. If attributed to muon antineutrino {r_arrow} electron antineutrino oscillations, this corresponds to an oscillation probability (averaged over the experimental energy and spatial acceptance) of (0.31 {+-} 0.12 {+-} 0.05){percent}. 10 refs., 7 figs., 1 tab.

Louis, W.C.; LSND Collaboration

1996-10-01

103

[Results of Simulation Studies  

NASA Technical Reports Server (NTRS)

Lattice Monte Carlo and off-lattice molecular dynamics simulations of h(sub 1)t(sub 4) and h(sub 4)t(sub l) (head/tail) amphiphile solutions have been performed as a function of surfactant concentration and temperature. The lattice and off-lattice systems exhibit quite different self-assembly behavior at equivalent thermodynamic conditions. We found that in the weakly aggregating regime (no preferred-size micelles), all models yield similar micelle size distributions at the same average aggregation number, albeit at different thermodynamic conditions (temperatures). In the strongly aggregating regime, this mapping between models (through temperature adjustment) fails, and the models exhibit qualitatively different micellization behavior. Incipient micellization in a model self-associating telechelic polymer solution results in a network with a transient elastic response that decays by a two-step relaxation: the first is due to a heterogeneous jump-diffusion process involving entrapment of end-groups within well-defined clusters and this is followed by rapid diffusion to neighboring clusters and a decay (terminal relaxation) due to cluster disintegration. The viscoelastic response of the solution manifests characteristics of a glass transition and entangled polymer network.

2003-01-01

104

Results from hadron colliders  

SciTech Connect

The present status of hadron collider physics is reviewed. The total cross section for {bar p} + p has been measured at 1.8 TeV: {sigma}{sub tot} = 72.1 {plus minus} 3.3 mb. New data confirm the UA2 observation of W/Z {yields} {bar q}q. Precision measurements of M{sub W} by UA2 and CDF give an average value M{sub W} = 80.13 {plus minus} 0.30 GeV/c{sup 2}. When combined with measurements of M{sub Z} from LEP and SLC this number gives sin{sup 2}{theta}{sub W} = 0.227 {plus minus} 0.006, or m{sub top} = 130{sub {minus}60}{sup +40} GeV/c{sup 2} from the EWK radiative correction term {Delta}r. Evidence for hadron colliders as practical sources of b quarks has been strengthened, while searches for t quarks have pushed the mass above M{sub W}: m{sub top} > 89 GeV/c{sup 2} 95% cl (CDF Preliminary). Searches beyond the standard model based on the missing E{sub T} signature have not yet produced any positive results. Future prospects for the discovery of the top quark in the range m{sub top} < 200 GeV/c{sup 2} look promising. 80 refs., 35 figs., 7 tabs.

Pondrom, L.G. (Wisconsin Univ., Madison, WI (USA))

1990-12-14

105

Results of hip resurfacing  

PubMed Central

Background The renewed popularity of resurfacing hip arthroplasty in the last 10 years has generated a remarkable quantity of scientific contributions based on mid- and short-term follow-up. More than one paper has reported a consistent early revision rate as a consequence of biological or biomechanical failure. Two major complications are commonly described with resurfacing implants: avascular necrosis and femoral-neck fracture. A close relationship between these two events has been suggested, but not firmly demonstrated, whereas cementing technique seems to be better understood as potential cause of failure. Methods We performed an in vitro study in which four different resurfacing implants were evaluated with a simulated femoral head, two types of cement, (low and high viscosity) and two cementing techniques: direct (cement apposition directly on the femoral head) and indirect (cement poured into the femoral component). Results High-viscosity cement showed homogeneous distribution over the entire femoral head. Low-viscosity cement showed a massive polar concentration with insufficient, if not absent, distribution in the equatorial zone. Conclusion Polar cement concentration could be a risk factor for early implant failure due to two effects on the femoral head: biological (excessive local exothermic reaction could cause osteocyte necrosis) and biomechanical (which could lead to uneven load distribution on the femoral head).

Favetti, Fabio; Casella, Filippo; Papalia, Matteo; Panegrossi, Gabriele

2011-01-01

106

[Results of hysteroscopic myomectomy].  

PubMed

Main symptoms related to submucous fibroids are menorrhagia, infertility, and postmenopausal bleeding. First experiences of hysteroscopic transcervical resection of fibroids have been published by Neuwirth in the late seventies. Reports with long-term follow-up in patients with abnormal uterine bleeding are available. After a follow-up period of five years and more, results are satisfactory in 70-85% of the patients. Intramural class 2 and larger fibroids (> 4 cm) constitute the limits of the endoscopic technique. Prior to hysteroscopic myoma resection, pretreatment with GnRH agonists may be indicated in selected cases (large myomas, patients suffering from secondary anemia). Repeat resection is an option after failed primary hysteroscopic operation and may reduce the hysterectomy rate. In infertile women with submucosal or intracavitary fibroids, pregnancy and delivery rates are increased after hysteroscopic myomectomy. Operative hysteroscopy is also safe and effective in controlling persistent postmenopausal bleeding. To conclude, hysteroscopic resection is the gold standard for the treatment of symptomatic submucous fibroids. PMID:15380769

Cravello, L; Agostini, A; Beerli, M; Roger, V; Bretelle, F; Blanc, B

2004-09-01

107

Polarization Results from PAPER  

NASA Astrophysics Data System (ADS)

Epoch of Reionization (EoR) experiments seeking a detection of the power spectrum face daunting challenges in the form of extremely bright foregrounds. One of the least well-characterized is that of polarization emission at meter wavelengths, both from our own Galaxy and from extragalactic radio sources. Faraday rotation of polarized sources produces frequency structure in the observed spectrum, and leakage of the polarized emission into estimates of Stokes I can be confused with the fluctuations due to reionization. Here we present recent results on characterizing the power spectrum of polarized emission the Precision Array for Probing the Epoch of Reionization (PAPER). PAPER is a focused experiment aimed at detecting the spatial power spectrum of neutral hydrogen emission during the EoR. PAPER is an interferometer operating from 100 - 200 MHz, with antennas measuring linear polarization and a correlator producing full-Stokes output. The science array is located at the site of the future Square Kilometre Array (SKA) site in South Africa, with a prototyping and test facility in Green Bank, WV. A staged build-out of PAPER South Africa (PSA) began in late 2009. PAPER has been obtaining science-grade observations since late 2011, when 32 dipoles (PSA-32) began taking data full-Stokes data, and is currently at its final size with 128 dipoles taking data since November 2013. We present power spectrum and imaging data from PSA-32 quantifying the brightness of foreground emission. We consider lessons learned from this experience in the design of the Hydrogen Epoch of Reionization Array.

Aguirre, James E.

2014-06-01

108

Climax granite test results  

SciTech Connect

The Lawrence Livermore Laboratory (LLL), as part of the Nevada Nuclear Waste Storage Investigations (NNWSI) program, is carrying out in situ rock mechanics testing in the Climax granitic stock at the Nevada Test Site (NTS). This summary addresses only those field data taken to date that address thermomechanical modeling for a hard-rock repository. The results to be discussed include thermal measurements in a heater test that was conducted from October 1977 through July 1978, and stress and displacement measurements made during and after excavation of the canister storage drift for the Spent Fuel Test (SFT) in the Climax granite. Associated laboratory and field measurements are summarized. The rock temperature for a given applied heat load at a point in time and space can be adequately modeled with simple analytic calculations involving superposition and integration of numerous point source solutions. The input, for locations beyond about a meter from the source, can be a constant thermal conductivity and diffusivity. The value of thermal conductivity required to match the field data is as much as 25% different from laboratory-measured values. Therefore, unless we come to understand the mechanisms for this difference, a simple in situ test will be required to obtain a value for final repository design. Some sensitivity calculations have shown that the temperature field is about ten times more sensitive to conductivity than to diffusivity under the test conditions. The orthogonal array was designed to detect anisotropy. After considering all error sources, anisotropic efforts in the thermal field were less than 5 to 10%.

Ramspott, L.D.

1980-01-15

109

Mars Pathfinder Preliminary Results  

NASA Astrophysics Data System (ADS)

Pathfinder plays a key role as the first of the Surveyor series and as the first Discovery project to complete its mission. On July 4 the Pathfinder lands at Ares Vallis chosen as a grab-bag sample of small rocks washed down from the highland regions by the ancient catastrophic floods that once inundated the region. A multi-spectral, stereoscopic camera (IMP) was selected with the capability to discriminate rock types according to their spectral signatures between 0.4 and 1.1 microns. This range gives information on the iron mineralogies (the weathering of ferrous to ferric minerals) and some compositional information with the 0.9 micron pyroxene band. Stereo rangefinding allows contour-mapping of the surface, calculation of rock sizes, and helps with rover guidance. Operationally the camera data determines which rocks seem spectrally interesting and the stereo images allow the rover team to station the APXS against the rock for a night-long integration. The resulting data constrains the elemental composition which is then combined with the spectral data to determine the mineralogy of the rock. The study of the atmosphere is also a prime scientific goal. The ASI/MET team has instruments for measuring diurnal temperature and pressure variations as well as wind velocity. During the descent they also derive the vertical profiles of the atmosphere. IMP has three windsocks that are monitored hourly for wind signatures; looking at all three simultaneously gives the vertical wind gradient. IMP also has 8 atmospheric filters that allow the camera to image the sun directly and measure the opacity variations hourly throughout the day. At night, bright star and Phobos observations with the geology filters continue the characterization. Besides the dust opacity, three filters in the 0.94 micron water band are able to measure water vapor at large airmass factors. Finally, a series of magnets at various positions on the lander will show indications of the magnetic properties of windblown dust. This scientific station could last as long as an earth year on Mars; therefore, seasonal changes in the weather and surface can be tracked.

Smith, P. H.

1997-07-01

110

Rheological properties of water soluble non-starch polysaccharides from whole grain rye flour  

Microsoft Academic Search

The typical properties of the dough and the characteristic structure of the bread crumb are the result of the interaction of many components. The water soluble non-starch polysaccharides of rye (rye-WSNSP), consisting mainly of pentosans, form viscous solutions and gels in the presence of oxidizing agents. A considerable decrease in the viscosity following the addition of endo-xylanase shows that an

Urban Girhammar; Baboo M. Nair

1995-01-01

111

Malaria sporozoites and circumsporozoite proteins bind specifically to sulfated glycoconjugates  

PubMed Central

Circumsporozoite (CS) proteins, which densely coat malaria (Plasmodia) sporozoites, contain an amino acid sequence that is homologous to segments in other proteins which bind specifically to sulfated glycoconjugates. The presence of this homology suggests that sporozoites and CS proteins may also bind sulfated glycoconjugates. To test this hypothesis, recombinant P. yoelii CS protein was examined for binding to sulfated glycoconjugate-Sepharoses. CS protein bound avidly to heparin-, fucoidan-, and dextran sulfate-Sepharose, but bound comparatively poorly to chondroitin sulfate A- or C-Sepharose. CS protein also bound with significantly lower affinity to a heparan sulfate biosynthesis-deficient mutant cell line compared with the wild- type line, consistent with the possibility that the protein also binds to sulfated glycoconjugates on the surfaces of cells. This possibility is consistent with the observation that CS protein binding to hepatocytes, cells invaded by sporozoites during the primary stage of malaria infection, was inhibited by fucoidan, pentosan polysulfate, and heparin. The effects of sulfated glycoconjugates on sporozoite infectivity were also determined. P. berghei sporozoites bound specifically to sulfatide (galactosyl[3-sulfate]beta 1-1ceramide), but not to comparable levels of cholesterol-3-sulfate, or several examples of neutral glycosphingolipids, gangliosides, or phospholipids. Sporozoite invasion into hepatocytes was inhibited by fucoidan, heparin, and dextran sulfate, paralleling the observed binding of CS protein to the corresponding Sepharose derivatives. These sulfated glycoconjugates blocked invasion by inhibiting an event occurring within 3 h of combining sporozoites and hepatocytes. Sporozoite infectivity in mice was significantly inhibited by dextran sulfate 500,000 and fucoidan. Taken together, these data indicate that CS proteins bind selectively to certain sulfated glycoconjugates, that sporozoite infectivity can be inhibited by such compounds, and that invasion of host hepatocytes by sporozoites may involve interactions with these types of compounds.

1992-01-01

112

Reversible detection of heparin and other polyanions by pulsed chronopotentiometric polymer membrane electrode.  

PubMed

The first fully reversible polymeric membrane-based sensor for the anticoagulant heparin and other polyanions using a pulsed chronopotentiometry (pulstrode) measurement mode is reported. Polymeric membranes containing a lipophilic inert salt of the form R(+)R(-) (where R(+) and R(-) are tridodecylmethylammonium (TDMA(+)) and dinonylnaphthalene sulfonate (DNNS(-)), respectively) are used to suppress unwanted spontaneous ion extractions under zero-current equilibrium conditions. An anodic galvanostatic current pulse applied across the membrane perturbs the equilibrium lipophilic ion distribution within the membrane phase in such a way that anions/polyanions are extracted into the membrane from the sample. The membrane is then subjected to an open-circuit zero current state for a short period, and finally a 0 V vs reference electrode potentiostatic pulse is applied to restore the membrane to its initial full equilibrium condition. Potentials are sampled as average values during the last 10% of the 0.5 s open circuit phase of the measurement cycle. Fully reversible and reproducible electromotive force (emf) responses are observed for heparin, pentosan polysulfate (PPS), chondroitin sulfate (CS), and oversulfated chondroitin sulfate (OSCS), with the magnitude of the potentiometric response proportional to charge density of the polyanions. The sensor provides an emf response related to heparin concentrations in the range of 1-20 U/mL. The responses to variations in heparin levels and toward other polyanions of the pulstrode configuration are analogous to the already established single-use, nonreversible potentiometric polyion sensors based on membranes doped only with the lipophilic anion exchanger TDMA(+). PMID:20121058

Gemene, Kebede L; Meyerhoff, Mark E

2010-03-01

113

Elimination and resultants. 1. Elimination and bivariate resultants  

Microsoft Academic Search

We discuss the relevance of elimination theory and resultants in computing, especially in computer graphics and CAGD. We list resultant properties to enhance overall understanding of resultants. For bivariate resultants, we present two explicit expressions: the Sylvester and the Bezout determinants. The Sylvester matrix is easier to construct, but the symmetrical Bezout matrix is structurally richer and thus sometimes more

Chionh Eng Wee; Ronald N. Goldman

1995-01-01

114

Recent Results from TASSO (1).  

National Technical Information Service (NTIS)

Results are presented on the inclusive production of various hadrons in positron electron annihilation. These results, together with those on inclusive charged hadron production, are used to obtain information on fragmentation mechanisms and the productio...

B. Foster

1982-01-01

115

Aesthetic rhinoplasty: Avoiding unfavourable results  

PubMed Central

Rhinoplasty is one of the most challenging surgical procedures in plastic surgery. It is not surprising that a significant number of patients end up with unfavourable outcomes. Many of these unfavourable outcomes could be the result of poor judgment and wrong decision making. Most frequently, the unfavourable outcome is the result of errors in surgical technique. In this paper, unfavourable outcomes resulting from errors in surgical technique are discussed under the heading of each operative step. Poor placement of intra-nasal incision can result in internal valve obstruction. Bad columellar scars can result from errors during open rhinoplasty. Unfavourable results associated with skeletonisation are mentioned. Tip plasty, being the most difficult part of rhinoplasty, can result in lack of tip projection, asymmetry and deformities associated with placement of tip grafts. Over-resection of the lower lateral cartilages during tip plasty can also result in pinched nose, alar collapse causing external valve obstruction and other alar rim deformities. Humpectomy can result in open roof deformity, inverted V deformity and over-resection resulting in saddle nose. The so-called poly beak deformity is also a preventable unfavourable outcome when dealing with a large dorsal hump. Complications resulting from osteotomies include narrowing of nasal airway, open roof deformity, inverted V deformity and asymmetry of the bony wall resulting from incomplete or green stick fractures. Judicious use of grafts can be very rewarding. By the same token, grafts also carry with them the risk of complications. Allografts can result in recurrent infection, atrophy of the overlying skin and extrusion resulting in crippling deformities. Autografts are recommended by the author. Unfavourable results from autografts include displacement of graft, visibility of the graft edges, asymmetry, warping, and resorption.

Bhangoo, Kulwant S.

2013-01-01

116

Cookoff Test Models and Results  

Microsoft Academic Search

This paper described the laboratory tests performed to generate input data and the development and improvement of a computer\\u000a model to predict fast and slow cookoff test results. The kinetics parameters of a PBX, based in RDX, was obtained and their\\u000a results were used as input data in a computer model to predict ignition temperature and time-to-explosion. The results obtained

José Gois; F. Chaves; P. Simões; L. Pedroso; I. Plaksin; Ricardo Mendes; J. Ribeiro; Anónio Portugal; Jose Campos

117

Misleading biochemical laboratory test results  

PubMed Central

This article reviews the general and specific factors that interfere with the performance of common biochemical laboratory tests and the interpretation of their results. The clinical status of the patient, drug interactions, and in-vivo and in-vitro biochemical interactions and changes may alter the results obtained from biochemical analysis of blood constituents. Failure to recognize invalid laboratory test results may lead to injudicious and dangerous management of patients.

Nanji, Amin A.

1984-01-01

118

FTAM Results Analyser User Documents.  

National Technical Information Service (NTIS)

The report is a description and user guide of the File Transfer, Access and Management (FTAM) Results Analyzer. The FTAM tester does limited results analysis in online mode. At the Session Service interface the active tester is logging all the trace infor...

W. Orth A. Reinshagen S. Vollmer

1990-01-01

119

Top physics results at CDF  

SciTech Connect

The most recent results on top quark physics at CDF are reported. Measurements of cross-section and mass are presented, and the status of single top quark production searches are discussed. The results obtained from probing various top quark properties are also presented.

Vickey, Trevor; /Illinois U., Urbana

2005-05-01

120

MER ARA pyroshock test results  

NASA Technical Reports Server (NTRS)

This paper presents the shock test results achieved in the MER ARA/brush motor pyroshock qualification. The results of MER flight system pyrofiring tests in comparison with the ARA shock test requirements are discussed herein. Alternate test methods were developed in an effort to qualify the critical MER equipment for adequate performance in the actual flight pyroshock condition.

Chang, Kurng Y.

2004-01-01

121

SIMPLE Performance Results in ZPL  

Microsoft Academic Search

This paper presents performance results for ZPL programs running on the Kendall Square Research KSR-2 and the Intel Paragon. Because ZPL is a data parallel language based on the Phase Abstractions programming model, these results complement earlier claims that the Phase Abstractions model can lead to portability across MIMD computers. The ZPL language and selected aspects of the compilation strategy

Calvin Lin; Lawrence Snyder

1994-01-01

122

Contradictory results in interferon research  

NASA Technical Reports Server (NTRS)

Several reports on immunologically related interferon research, both in the areas of basic science and clinical research, are briefly reviewed, and it is noted that in many cases the results obtained are contradictory. It is argued, however, that the contradictory results are not surprising since interferon is a biological response modifier and has been known to produce opposite results even when the same interferon prepartion is used. It is emphasized that dosage, timing, route, and other experimental conditions are essential factors in planning immunological studies with interferon. Careful planning of future experiments with interferon should be required to prevent the possible generation of effects that are opposite to those expected.

Sonnenfeld, G.

1984-01-01

123

PHENIX recent heavy flavor results  

NASA Astrophysics Data System (ADS)

Cold nuclear matter (CNM) effects provide an important ingredient to interpret the results from heavy-ion collisions. Such effects include nuclear shadowing, intrinsic parton transverse momentum broadening, and initial patron energy loss. The measurement of heavy quark production is a good probe to study the CNM effects particularly on gluons, since heavy quarks are mainly produced via gluon fusions at RHIC energy. The PHENIX experiment has an ability to study the CNM effects by measuring leptons from heavy-flavor decay in a broad kinematic range. Comparisons of the results measured in different rapidity regions allow us to study modification of gluon density function in the Au nucleus depending on parton fractional momentum x. In addition, comparisons to the results from heavy-ion collisions (Au + Au and Cu + Cu) measured by PHENIX provide an insight into the role of CNM effects in such collisions. Recent PHENIX results on heavy quark production are discussed in this presentation.

Lim, Sanghoon

2014-06-01

124

Particulate Measurement - Motorcycle Test Results.  

National Technical Information Service (NTIS)

Particulate testing has been successfully completed on two different two-stroke powered motorcycles. The results indicate that the amount of particulate material produced by motorcycles is no greater than that from light-duty diesel automobiles. This conc...

E. Danielson

1978-01-01

125

Analysis of EUVE Experiment Results  

NASA Technical Reports Server (NTRS)

A series of tests to validate an antenna pointing concept for spin-stabilized satellites using a data relay satellite are described. These tests show that proper antenna pointing on an inertially-stabilized spacecraft can lead to significant access time through the relay satellite even without active antenna pointing. We summarize the test results, the simulations to model the effects of antenna pattern and space loss, and the expected contact times. We also show how antenna beam width affects the results.

Horan, Stephen

1996-01-01

126

ACTS: Technology Description and Results  

NASA Technical Reports Server (NTRS)

The ACTS Project was originated at NASA Glenn Research Center in the early 1980's to sponsor the development and application of technology that was intended to be used by the private sector. The program was formulated with the underlying philosophy of maintaining US leadership in satellite communications while focusing technology development for efficient use of the frequency spectrum. This report chronicles the execution and results of the program from the perspective of its technology managers, from inception through hardware and system development to on-orbit experiments and demonstrations of the technology. The first eight sections of the report discuss programmatic background, the specific satellite and ground terminal technology and the results generated by the program including industry relevance. A federally funded program of this type attracted strong advocates and adversaries and the resulting impact on the project schedule is also discussed. The last two sections are a list of useful acronyms and extensive references.

Gedney, Richard T.; Schertler, Ronald; Gargione, Frank

2000-01-01

127

Data Mining Citizen Science Results  

NASA Astrophysics Data System (ADS)

Scientific discovery from big data is enabled through multiple channels, including data mining (through the application of machine learning algorithms) and human computation (commonly implemented through citizen science tasks). We will describe the results of new data mining experiments on the results from citizen science activities. Discovering patterns, trends, and anomalies in data are among the powerful contributions of citizen science. Establishing scientific algorithms that can subsequently re-discover the same types of patterns, trends, and anomalies in automatic data processing pipelines will ultimately result from the transformation of those human algorithms into computer algorithms, which can then be applied to much larger data collections. Scientific discovery from big data is thus greatly amplified through the marriage of data mining with citizen science.

Borne, K. D.

2012-12-01

128

New results from FRECOPA analysis  

NASA Technical Reports Server (NTRS)

New results from the ongoing analysis of the FRECOPA's (FREnch COoperative PAssive payload) system hardware are discussed. FRECOPA (AO138) was one of the 57 experiments flown on the LDEF satellite. The experiment was located on the trailing edge (Tray B3) and was exposed to UV radiation (11,100 equivalent sun hours), approximately equal to 34,000 thermal cycles, higher vacuum levels than the leading edge, a low atomic oxygen flux, and minor doses of protons and electrons. Due to LDEF's extended mission (5.8 years), CNES decided to set up a team to analyze the FRECOPA system. Initial results were presented at the First Post-Retrieval Conference, June, 1991. The results obtained since then are summarized.

Durin, Christian

1993-01-01

129

Vasectomy reversal technique and results.  

PubMed

Requests for vasectomy reversal have been increasing. Much has been written about the microscopic reversals. However, considerable training and frequent use of the microscope are necessary to maintain proficiency. The literature was reviewed for the different techniques of vasectomy reversal and results vary more with the surgeon than with the technique used. The authors reviewed 66 consecutive nonmicroscope vasectomy reversals performed in an outpatient facility and noticed a pregnancy rate of 63% of those followed over 1 year. 39 cases were performed macroscopically with stents and 27 cases were performed with 2.5 loupe magnification without stents and the pregnancy rate was 65.5% and 61%, respectively. The authors conclude that the nonmicroscopic techniques for vasectomy reversal have essentially equal results as the microscopic technique and are cost effective. It is suggested that the surgeon quote the results to the patient for the operation he proposes. PMID:6830449

Denton, S E; Bohnert, W W; Kurtz, C W

1983-01-01

130

Catastrophic disruption experiments: Recent results  

NASA Technical Reports Server (NTRS)

This paper presents a review of the progress in the field of catastrophic disruption experiments over the past 4 years, since the publication of the review paper by Fujiwara et al. (1989). We describe the development of new techniques to produce shattering impacts relevant to the study of the collisional evolution of the asteroids, and summarize the results from numerous experiments which have been performed to date, using a variety of materials for both the impactor and the targets. Some of these, such as ice-on-ice, loose aggregates and pressurized targets, are quite new and have provided novel and exciting results. Some of the gaps existing previously in the data on fragment ejection-angle distributions, as well as translational and rotational velocity fields (including fine fragments) have been filled, and these new results will be surveyed.

Martelli, G.; Ryan, E. V.; Nakamura, A. M.; Giblin, I.

1994-01-01

131

Tau physics results from SLD  

SciTech Connect

Results on {tau} physics at SLD are presented. They are based on 4,316 {tau}-pair events selected from a 150 k Z{sup 0} data sample collected at the SLC. These results include measurements of the {tau} lifetime ({tau}{sub r} = 288.1 {+-} 6.1 {+-} 3.3 fs), the {tau} Michel parameters ({rho} = 0.71 {+-} 0.09 {+-} 0.04, {zeta} = 1.03 {+-} 0.36 {+-} 0.05, and {zeta}{delta} = 0.84 {+-} 0.27 {+-} 0.05), and the {tau} neutrino helicity (h{sub {nu}} = {minus}0.81 {+-} 0.18 {+-} 0.03).

Daoudi, M.; SLD Collaboration

1996-08-10

132

Recent results from hadron colliders  

SciTech Connect

This is a summary of some of the many recent results from the CERN and Fermilab colliders, presented for an audience of nuclear, medium-energy, and elementary particle physicists. The topics are jets and QCD at very high energies, precision measurements of electroweak parameters, the remarkably heavy top quark, and new results on the detection of the large flux of B mesons produced at these machines. A summary and some comments on the bright prospects for the future of hadron colliders conclude the talk. 39 refs., 44 figs., 3 tabs.

Frisch, H.J. (Chicago Univ., IL (USA))

1990-12-10

133

Turning Science Results into News  

NASA Astrophysics Data System (ADS)

Do you want to get into the New York Times? Aside from writing an angry letter or robbing a bank, getting into the news (with your science result) requires a well-crafted press release. Reaching out to reporters is very different from reaching out to fellow scientists. Scientific significance is not the same as newsworthiness, but many science results can be molded into interesting stories that reporters can relate to their audience. This presentation will present examples of science stories that made it big and some that flopped. We will also examine what makes a story attractive to newspaper and magazine editors.

Wanjek, Christopher

2006-09-01

134

Results from Numerical General Relativity  

NASA Technical Reports Server (NTRS)

For several years numerical simulations have been revealing the details of general relativity's predictions for the dynamical interactions of merging black holes. I will review what has been learned of the rich phenomenology of these mergers and the resulting gravitational wave signatures. These wave forms provide a potentially observable record of the powerful astronomical events, a central target of gravitational wave astronomy. Asymmetric radiation can produce a thrust on the system which may accelerate the single black hole resulting from the merger to high relative velocity.

Baker, John G.

2011-01-01

135

Communicating Performance Assessments Results - 13609  

SciTech Connect

The F-Area Tank Farms (FTF) and H-Area Tank Farm (HTF) are owned by the U.S. Department of Energy (DOE) and operated by Savannah River Remediation LLC (SRR), Liquid Waste Operations contractor at DOE's Savannah River Site (SRS). The FTF and HTF are active radioactive waste storage and treatment facilities consisting of 51 carbon steel waste tanks and ancillary equipment such as transfer lines, evaporators and pump tanks. Performance Assessments (PAs) for each Tank Farm have been prepared to support the eventual closure of the underground radioactive waste tanks and ancillary equipment. PAs provide the technical bases and results to be used in subsequent documents to demonstrate compliance with the pertinent requirements for final closure of the Tank Farms. The Tank Farms are subject to a number of regulatory requirements. The State regulates Tank Farm operations through an industrial waste water permit and through a Federal Facility Agreement approved by the State, DOE and the Environmental Protection Agency (EPA). Closure documentation will include State-approved Tank Farm Closure Plans and tank-specific closure modules utilizing information from the PAs. For this reason, the State of South Carolina and the EPA must be involved in the performance assessment review process. The residual material remaining after tank cleaning is also subject to reclassification prior to closure via a waste determination pursuant to Section 3116 of the Ronald W. Reagan National Defense Authorization Act of Fiscal Year 2005. PAs are performance-based, risk-informed analyses of the fate and transport of FTF and HTF residual wastes following final closure of the Tank Farms. Since the PAs serve as the primary risk assessment tools in evaluating readiness for closure, it is vital that PA conclusions be communicated effectively. In the course of developing the FTF and HTF PAs, several lessons learned have emerged regarding communicating PA results. When communicating PA results it is important to stress that the primary goal of the PA results is to provide risk understanding, recognizing the magnitude of risk and identifying the conceptual model decisions and critical assumptions that most impact the results. Conceptual models that describe reality using simplified, mathematical approaches, and their roles in arriving at the PA results, must also be communicated. When presenting PA results, evaluations will typically be focused on a single baseline (or Base Case) to provide a foundation for discussion. The PA results are supplemented by other studies (alternate configurations, uncertainty analyses, and sensitivity analyses) which provide a breadth of modeling to supplement the Base Case. The suite of information offered by the various modeling cases and studies provides confidence that the overall risk is understood along with the underlying parameters and conditions that contribute to risk. (author)

Layton, Mark [Savannah River Remediation LLC, Building 705-1C, Aiken, SC 29808 (United States)] [Savannah River Remediation LLC, Building 705-1C, Aiken, SC 29808 (United States)

2013-07-01

136

First results from SAGE II  

SciTech Connect

The Russian-American Gallium solar neutrino Experiment (SAGE) began the second phase of operation (SAGE II) in September of 1992. Monthly measurements of the integral flux of solar neutrinos have been made with 55 tonnes of gallium. The K-peak results of the first five runs of SAGE II give a capture rate of 76{sub {minus}18}{sup +21} (stat) {sub {minus}7}{sup +5} (sys) SNU. combined with the SAGE I result, the capture rate is 74{sub {minus}12}{sup +13} (stat) {sub {minus}7}{sup +5} (sys) SNU. This represents only 56%--60% of the capture rate predicted by different Standard Solar Models.

Abdurashitov, J.N.; Faizov, E.L.; Gavrin, V.N. [Russian Academy of Sciences, Moscow (Russian Federation). Inst. for Nuclear Research] [and others

1994-07-01

137

Supersymmetry results at the Tevatron  

SciTech Connect

The Run II physics programme of the Tevatron is proceeding with more than 300 pb{sup -1} of analysis quality data, collected at a center-of-mass energy of 1.96 TeV. Searches for supersymmetric particles are starting to set new limits, improving over the LEP and Run I results and exploring new regions of parameter space. They present recent results in Supersymmetry with the upgraded CDF and D0 detectors and give some prospects for the future of these searches.

Manca, Giulia; /Liverpool U.

2005-05-01

138

The Planck Mission: Early Results  

ScienceCinema

The ESA Planck space mission, launched on May 14, 2009, is dedicated to high precision measurements of the cosmic microwave background (CMB), the first light of the universe, both in temperature and polarization. The satellite observes the full sky from a far-Earth orbit with two cryogenic instruments in the 30-850 GHz range at the focal plane of a 1.5-meter telescope. The primary objective of Planck is to measure with unprecedented precision the key cosmological parameters and to provide accurate tests of physics in the early universe. Planck has recently completed the fifth full-sky survey. The data analysis is underway. The first cosmology results are expected in early 2013 while a number of astrophysical results have been recently delivered to the community, including galactic and extragalactic astrophysics and a rich catalogue of radio and infrared sources. These results demonstrate the excellent in-orbit performance of the instruments and give excellent prospects for the forthcoming cosmological results.

139

Cuesta College School Performance Results.  

ERIC Educational Resources Information Center

This Cuesta College (California) document identifies key institutional effectiveness indicators that are used to assess institutional performance on specified educational processes. The key process of instruction/learning is measured through student performance results such as: (1) transfer rate (University of California/California State…

Cuesta Coll., San Luis Obispo, CA.

140

Trial Results - National Cancer Institute  

Cancer.gov

September 07, 2012 Observation as Good as Surgery for Some Men with Prostate Cancer Many men diagnosed with early-stage prostate cancer could forego radical prostatectomy and live as long as men who have immediate surgery, according to long-awaited results from a clinical trial published July 19, 2012, in the New England Journal of Medicine (NEJM).

141

Viking Biology Results. Abstract Only.  

National Technical Information Service (NTIS)

A brief review of the purposes and the results from the Viking Biology experiments is presented, in the expectation that the lessons learned from this mission will be useful in planning future approaches to the biological exploration of Mars. Since so lit...

H. P. Klein

1989-01-01

142

Evaluating Polling Methods and Results  

NSDL National Science Digital Library

What basic skills are needed to read a poll? How are scientifically sound polls conducted? How can one gauge the reliability of poll data? In this lesson, students learn terms associated with polling as well as how to read and evaluate poll methodologies and results. They then practice administering and interpreting polls.

Network, The N.

143

The first results from MAXIMA  

Microsoft Academic Search

This talk reviews the first results from MAXIMA and the scientific implications of the combined MAXIMA and BOOMERANG data sets. The key piece of science is that both experiments independently observe the first acoustic peak in CMB angular power spectrum at a value l?200 and with a width which are compatible with a flat universe and inflation. Both experiments also

George F. Smoot

2001-01-01

144

The first results from MAXIMA  

Microsoft Academic Search

This talk reviews the first results from MAXIMA and the scientific implications of the combined MAXIMA and BOOMERANG data sets. The key piece of science is that both experiments independently observe the first acoustic peak in CMB angular power spectrum at a value ~200 and with a width which are compatible with a flat universe and inflation. Both experiments also

George F. Smoot

2001-01-01

145

Converting Engagement Results into Action  

ERIC Educational Resources Information Center

Assessment information should be actionable in that findings must be used to improve the student experience and educational effectiveness. Assessment is a worthwhile undertaking when campuses generate meaningful data, thoroughly consider and discuss evidence-based improvement initiatives, and ultimately use results to improve educational…

Kinzie, Jillian; Pennipede, Barbara S.

2009-01-01

146

Reporting and Interpreting Test Results.  

ERIC Educational Resources Information Center

Tests and assessments are generally administered to gather data to aid in decision making, with at an individual student level or at an aggregated level. In order to incorporate assessment data in informed decision making, test users need to understand the test results. This chapter highlights the types of test scores and test score…

Harris, Deborah J.

147

Results Of PLACES Data Analysis.  

National Technical Information Service (NTIS)

The results of analyses performed to support PLACES data reduction and data interpretation are presented. Beacon receiver measurements of the scattering of a 100 MHz pseudo-noise beacon signal BPSK modulated at a 10 MHz rate were made during an occulatati...

C. W. Prettie

1982-01-01

148

Catastrophic disruption experiments: Recent results  

Microsoft Academic Search

This paper presents a review of the progress in the field of catastrophic disruption experiments over the past 4 years, since the publication of the review paper by Fujiwara et al. (1989). We describe the development of new techniques to produce shattering impacts relevant to the study of the collisional evolution of the asteroids, and summarize the results from numerous

G. Martelli; E. V. Ryan; A. M. Nakamura; I. Giblin

1994-01-01

149

The Planck Mission: Early Results  

SciTech Connect

The ESA Planck space mission, launched on May 14, 2009, is dedicated to high precision measurements of the cosmic microwave background (CMB), the first light of the universe, both in temperature and polarization. The satellite observes the full sky from a far-Earth orbit with two cryogenic instruments in the 30-850 GHz range at the focal plane of a 1.5-meter telescope. The primary objective of Planck is to measure with unprecedented precision the key cosmological parameters and to provide accurate tests of physics in the early universe. Planck has recently completed the fifth full-sky survey. The data analysis is underway. The first cosmology results are expected in early 2013 while a number of astrophysical results have been recently delivered to the community, including galactic and extragalactic astrophysics and a rich catalogue of radio and infrared sources. These results demonstrate the excellent in-orbit performance of the instruments and give excellent prospects for the forthcoming cosmological results.

Marco Bersanelli (University of Milan, Italy) [University of Milan, Italy

2012-03-07

150

Results Count in Los Angeles.  

ERIC Educational Resources Information Center

In the Los Angeles Unified School District, 64 percent of its 660 schools increased their norm-referenced test scores from 1998 to 1999. Success stems from a clear, districtwide approach to standards-based learning and broad-based communication about student and school gains. Bancroft Middle School's results-driven approach is profiled. (MLH)

Berman, Ilene M.; Cross, Christopher T.; Evans, Joan

2000-01-01

151

Laparoscopic Radical Prostatectomy: Preliminary Results  

Microsoft Academic Search

Background: Retropubic and perineal radical prostatectomy are used for curative treatment of localized prostate cancer. More complex urological procedures are now being done with laparoscopy. We present our initial results of transperitoneal laparoscopic radical prostatectomy.Materials and Methods: Twenty laparoscopic radical prostatectomies were performed between May 1998 and May 1999. The mean age at the time of surgery was 64.2 years.

F. Jacob; L. Salomon; A. Hoznek; J. Bellot; P. Antiphon; D. K. Chopin; C. C. Abbou

2000-01-01

152

Block Scheduling that Gets Results  

ERIC Educational Resources Information Center

All children can learn. When principals and faculties fully embrace this core belief and demonstrate it to students, parents, and each other, significant improvements in academic performance can result. However, while it is certainly true that all children are capable of academic success, it is also true that learning occurs at different rates.…

Myers, Nicholas J.

2008-01-01

153

Archaeological Survey Methodology and Results.  

National Technical Information Service (NTIS)

The Ohio Department of Transportation (ODOT) has determined that one of the best ways to optimize Phase I cultural-resource survey data is to test the feasibility of using advanced technology for project planning. This study describes the results of resea...

A. P. Sullivan A. M. Ioannides R. C. Frohn

2003-01-01

154

Recent Results from the Tevatron  

SciTech Connect

We review recent results from fixed-target and collider experiments at the Fermilab Tevatron. Among the topics discussed are jet production rates, {alpha}{sub S} measurements, the {anti d}/{anti u} ratio in the proton sea, diffraction, heavy quark physics and leptoquark searches.

Demorden, L.

1998-06-01

155

Higher Education Counts: Achieving Results  

ERIC Educational Resources Information Center

This brochure highlights some of the performance indicators used by Connecticut's public higher education institution to demonstrate accountability. This paper reports on the results of these goals: (1) Student Learning; (2) Learning in K-12; (3) Access and Affordability; (4) Economic Development; (5) Societal Needs; and (6) Resource Efficiency.…

Connecticut Department of Higher Education (NJ1), 2008

2008-01-01

156

Results from the ISM experiment  

Microsoft Academic Search

The first results on the surface minerology of Mars and Phobos and on the atmospheric composition of Mars obtained with the infrared imaging spectrometer ISM are presented. The amounts of CO and H2O are evaluated using 15 averaged spectra at various altitudes on Olympus Mons. Values for the albedo and redness of the Martian surface are reported. The ISM spectra

J.-P. Bibring; Y. Langevin; A. Soufflot; C. Combes; C. Cara; P. Drossart; Th. Encrenaz; S. Erard; O. Forni; B. Gondet; L. Ksanfomalfty; E. Lellouch; Ph. Masson; V. Moroz; F. Rocard; J. Rosenqvist; C. Sotin

1989-01-01

157

Top physics results from CDF  

SciTech Connect

The top quark is by far the most massive fundamental particle observed so far, and the study of its properties is interesting for several reasons ranging from its possible special role in electroweak symmetry breaking to its sensitivity to physics beyond the Standard Model. They present recent top physics results from CDF based on 160-320 pb{sup -1} of p{bar p} collision data at {radical}s = 1.96 TeV. The t{bar t} cross section and the top mass have been measured in different decay channels and using different methods. they have searched for evidence of single top production, setting upper limits on its production rate. Other results shown in this conference include studies of the polarization of W bosons from top decays, a search for charged Higgs decaying from top, and a search for additional heavy t' quarks.

Gomez, Gervasio; /Cantabria Inst. of Phys.

2005-05-01

158

New Result on ?+ from LEPS  

NASA Astrophysics Data System (ADS)

We report new results of the ?+ search by the LEPS collaboration. First, we applied exactly the same inclusive analysis as previous one to new data, where the proton and neutron contributions were not separated. The inclusive analysis does not show a strong narrow peak which was observed in the previous analysis. Thus, two results are inconsistent. In order to investigate the reason for the inconsistency, we have carried out a new analysis, where the proton contributions are identified by using the energy loss information of a trigger plastic scintillator called Start Counter. When proton events were selected, a peak structure was seen in the previous data. This indicates that a part of the peak structure in the previous data comes from statistical fluctuation. Furthermore, a clear signal enhancement was observed in the proton rejected sample. This enhancement was confirmed by subtracting the proton contribution estimated by a Monte-Carlo based simulation.

Kato, Y.

2013-08-01

159

First results from SAGE II  

SciTech Connect

The Russian-American Gallium solar neutrino Experiment (SAGE) began the second phase of operation (SAGE II) in September of 1992. Monthly measurements of the integral flux of solar neutrinos have been made with 55 tonnes of gallium. The K-peak results of the first five runs of SAGE II give a capture rate of 76{sup +21}{sub {minus}18}(stat){sup +5}{sub {minus}7}(sys) SNU. Combined with the SAGE I result, the capture rate is 74{sup +13}{sub {minus}12}(stat){sup +5}{sub {minus}7}(sys) SNU. This represents only 56%--60% of the capture rate predicted by different Standard Solar Models. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

Aburashitov, J.N.; Faizov, E.L.; Gavrin, V.N.; Gusev, A.O.; Kalikhov, A.V.; Knodel, T.V.; Knyshenko, I.I.; Kornoukhov, V.N.; Mirmov, I.N.; Pshukov, A.M.; Shalagin, A.M.; Shikhin, A.A.; Timofeyev, P.V.; Veretenkin, E.P.; Vermul, V.M.; Zatsepin, G.T. [Institute for Nuclear Research, Russian Academy of Sciences Moscow, 117312 (Russian Federation); Bowles, T.J.; Nico, J.S.; Teasdale, W.A.; Wark, D.L.; Wilkerson, J.F. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Cleveland, B.T.; Daily, T.; Davis, R. Jr.; Lande, K.; Lee, C.K.; Wildenhain, P.W. [University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States); Elliott, S.R. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Cherry, M.L. [Louisiana State University, Baton Rouge, Louisiana 70803 (United States)

1995-07-10

160

The Revised COMPTEL Orion Results  

NASA Astrophysics Data System (ADS)

COMPTEL observations of the Orion/Monoceros region have shown distinct evidence for excessive 3-7 MeV emission that was attributed to nuclear de-excitation lines from accelerated 12C and 16O nuclei. Unfortunately, we must conclude now that this appears to be a spurious result. This conclusion follows from a better understanding of the instrumental background, from a better exposure of the region, and from an improved analysis method. We show here how the impact of each of these gradually reduces the signal to a less than 3 ? result. The prime underlying cause seems to be 24Na activation in and around the upper COMPTEL detectors. Combining all available data, we now set a 2 ? flux upper limit on the 3-7 MeV emission of Orion of 3×10-5 ? cm-2 s-1, to be compared with the previously derived flux of ~10-4 ? cm-2 s-1.

Bloemen, H.; Morris, D.; Knödlseder, J.; Bennett, K.; Diehl, R.; Hermsen, W.; Lichti, G.; van der Meulen, R. D.; Oberlack, U.; Ryan, J.; Schönfelder, V.; Strong, A. W.; de Vries, C.; Winkler, C.

1999-08-01

161

Variability of aflatoxin test results  

Microsoft Academic Search

Using 12 lb samples, 280 g subsamples, the Waltking method of analysis, and densitometric procedures, the sampling, subsampling,\\u000a and analytical variances associated with aflatoxin test procedures were estimated. Regression analysis indicated that each\\u000a of the above variance components is a function of the concentration of aflatoxin in the population being tested. Results,\\u000a for the test procedures given above, showed that

T. B. Whitaker; J. W. Dickens; R. J. Monroe

1974-01-01

162

Cassini Imaging Results at Titan  

NASA Technical Reports Server (NTRS)

The Cassini Imaging Science Subsystem (ISS) images show striking albedo markings on the surface of Titan. In equatorial regions the albedo patterns have high contrast and exhibit prominent lineaments and linear/angular boundaries suggestive of tectonic influences or fracturing of brittle surficial materials. There are intriguing dark curving lines near the south pole. Here we present several working hypotheses to explain these patterns. We also briefly summarize atmospheric science results.

McEwen, A.; Turtle, E.; Perry J.; Fussner, S.; Porco, C.; West, R.; Johnson, T.; Collins, G.; DelGenio, T.; Barbara, J.

2005-01-01

163

Hyperon physics results from SELEX  

Microsoft Academic Search

In parallel to charm hadroproduction the experiment SELEX (E781) at Fermilab is pursuing a rich hyperon physics program. SELEX employs a 600 GeV\\/c beam consisting of 50% Sigma- and pi- each. The three-stage magnetic spectrometer covering 0.1<=xF<=1.0 features a high-precision silicon vertex system, broad-coverage particle identification using TRD and RICH, and a three-stage lead glass photon calorimeter. First results for

Ivo Eschrich

1999-01-01

164

The ROSAT Results Archive (RRA)  

Microsoft Academic Search

The ROSAT Results Archive (RRA) is currently being produced by the five participating ROSAT institu­tions: Max­Planck­Institut f¨ur extraterrestrische Physik (MPE), Goddard Space Flight Center (GSFC),Smithsonian Astrophysical Observatory (SAO), Leicester University (LU), and Astrophysikalisches Institut Potsdam (AIP). It will be a public archive that contains all the sources in all the released ROSAT HRI and PSPC pointed observations (about 5000 so

J. Wambsganss; T. Boller; M. Corcoran; K. Dennerl; J. Englhauser; R. Gruber; F. Haberl; D. Harris; G. Hasinger; R. Petre; W. Pietsch; A. Priebe; J. Pye; S. Sembay; W. Voges; M. Watson; U. Zimmermann

1995-01-01

165

Results from the B Factories  

SciTech Connect

These proceedings are based on lectures given at the Helmholtz International Summer School Heavy Quark Physics at the Bogoliubov Laboratory of Theoretical Physics, Dubna, Russia, during August 2008. I review the current status of CP violation in B meson decays from the B factories. These results can be used, along with measurements of the sides of the Unitarity Triangle, to test the CKM mechanism. In addition I discuss experimental studies of B decays to final states with 'spin-one' particles.

Bevan, A.; /Queen Mary, U. of London

2009-01-08

166

Recent results in strangeonium spectroscopy  

SciTech Connect

Data from exclusive s/bar s/ meson final states are shown. The data were obtained in a 4.1 ev/nb exposure of K/sup -/p interactions at 11 GeV/c in the LASS spectrometer at SLAC. The results from the analyses of these data is presented and the spectrum of strangeonium states is discussed. 8 refs., 8 figs.

Aston, D.; Awaji, N.; Bienz, T.; Bird, F.; D'Amore, J.; Dunwoodie, W.; Endorf, R.; Fujii, K.; Hayashii, H.; Iwata, S.

1988-10-01

167

Top quark results at CDF  

SciTech Connect

We present the latest results on the top quark obtained by the CDF experiment using a data sample of about 110 {ital pb}{sup -1} collected at the Fermilab Tevatron collider. We briefly describe the candidate events selection and then discuss the production cross section determination and the mass measurement. The study of two new decay channels (all hadronic and ``tau dilepton``) is also reported.

Leone, S. [Istituto Nazionale di Fisica Nucleare, Pisa (Italy); CDF Collaboration

1996-08-01

168

Recent QCD results from CDF  

SciTech Connect

CDF has recently concluded a very successful 1992--93 data run in which an integrated luminosity of 21.3 pb {sup {minus}1} was written to tape. The large data sample allows for a greater discovery potential for new phenomena and for better statistical and systematic precision in analysis of conventional physics. This paper summarizes some of the new results from QCD analyses for this run.

Huston, J. [Michigan State Univ., East Lansing, MI (United States)]|[Fermi National Accelerator Lab., Batavia, IL (United States); CDF Collaboration

1994-01-01

169

Asymptotic Results for Multiple Imputation  

Microsoft Academic Search

Imputation and multiple-imputation procedures have been used in practice to handle the problem of ignorable nonresponse in sample surveys. We examine the large-sample properties of these procedures where covariates are available for the case when the complete-data analysis is based on least squares. The results provide a formal justification for the inference procedures discussed by Rubin and Schenker for the

Nathaniel Schenker; A. H. Welsh

1988-01-01

170

Preliminary QCGAT program test results  

NASA Technical Reports Server (NTRS)

NASA Lewis Research Center is conducting a program to demonstrate that large commercial engine technology can be applied to general aviation engines to reduce noise, emissions and fuel consumption and to develop new technology where required. The overall engine program, design, and technology incorporated into the QCGAT engines are described. In addition, preliminary engine test results are presented and compared to the technical requirements the engines were designed to meet.

Koenig, R. W.; Sievers, G. K.

1979-01-01

171

Recent Results in Computational Origami  

Microsoft Academic Search

Computational origami is a recent branch of computer science studying e-cient algorithmsforsolvingpaper-foldingproblems. ThisfleldessentiallybeganwithRobert Lang'sworkonalgorithmicorigamidesign (25),starting around 1993. Sincethen, the fleld of computational origami has grown signiflcantly. The purpose of this paper is to survey the work in the fleld, with a focus on recent results, and to present several open problems that remain. The survey cannot hope to be complete,

Erik D. Demaine; Martin L. Demaine

2001-01-01

172

Physics results from polarized DIS.  

SciTech Connect

We have extracted polarized nucleon distributions from recent data at CERN, SLAC and DESY. The flavor-dependent valence and sea quark spin distributions are determined for each experiment. We take into account possible differences in the up and down sea distributions, and assume that the strange sea contribution is suppressed by mass effects. Physics results determined from different experiments are compared, including higher order corrections.

Ramsey, G. P.

1998-03-23

173

Recent DIII-D results  

SciTech Connect

This paper summarizes the recent DIII-D experimental results and the development of the relevant hardware systems. The DIII-D program focuses on divertor solutions for next generation tokamaks such as International Thermo-nuclear Experimental Reactor (ITER) and Tokamak Physics Experiment (TPX), and on developing configurations with enhanced confinement and stability properties that will lead to a more compact and economical fusion reactor. The DIII-D program carries out this research in an integrated fashion.

Petersen, P.I.

1994-07-01

174

SOME RESULTS ON INVERSE SCATTERING  

Microsoft Academic Search

A review of some of the author's results in the area of inverse scattering is\\u000agiven. The following topics are discussed: 1) Property $C$ and applications, 2)\\u000aStable inversion of fixed-energy 3D scattering data and its error estimate, 3)\\u000aInverse scattering with ''incomplete`` data, 4) Inverse scattering for\\u000ainhomogeneous Schr\\\\\\

A. G. RAMM

2008-01-01

175

Recent Experimental Results from MRX  

NASA Astrophysics Data System (ADS)

MRX (Magnetic Reconnection Experiment) is dedicated to studying the fundamental physics of magnetic reconnection. Here, we present results from a new operational mode, ``push mode''(M. Yamada et al., Phys. Plasmas 4), 1936 (1997). (private flux reconnected into common flux), in which counter-helicity (opposite B_T) and co-helicity (same B_T) reconnection can be studied. Results previously reported were predominantly from ``pull mode''^1 (common flux reconnected into private flux) and null-helicity (no B_T) experiments. Physics topics which can be addressed advantageously in the push mode include: (1) conversion of magnetic energy to plasma kinetic and thermal energy, (2) effects of boundary conditions on reconnection rate, and (3) helicity dissipation in the reconnection layer. Measurements of B are taken with arrays of small pickup coils. Plasma parameters n_e, T_e, T_i, and ion flow VD are taken with Langmuir probes and a retarding-field gridded energy analyzer (RGEA). These data are supplemented with multi-chord measurements of HeII (4686 Åline emission, on which Abel inversion will be performed. Results to date indicate that direct ion heating occurs during reconnection (T_i>Te and ?_eq,ei >> ?_rec) and near the reconnection layer and that ion current is a significant fraction of the total reconnection current sheet. Implications for all three physics topics above will be discussed.

Hsu, S.; Himura, H.; Carter, T.; Zaharia, S.; Ji, H.; Yamada, M.; Brown, M.

1998-11-01

176

The WMAP data and results  

NASA Astrophysics Data System (ADS)

The Wilkinson Microwave Anisotropy Probe (WMAP) science team has released results from the first year of operation at the Earth-Sun L 2 Lagrange point. The maps are consistent with previous observations but have much better sensitivity and angular resolution than the COBE DMR maps, and much better calibration accuracy and sky coverage than ground-based and balloon-borne experiments. The angular power spectra from these ground-based and balloon-borne experiments are consistent within their systematic and statistical uncertainties with the WMAP results. WMAP detected the large angular-scale correlation between the temperature and polarization anisotropies of the CMB caused by electron scattering since the Universe became reionized after the "Dark Ages", giving a value for the electron scattering optical depth of 0.17 ± 0.04. The simplest ?CDM model with n=1 and ? tot=1 fixed provides an adequate fit to the WMAP data and gives parameters which are consistent with determinations of the Hubble constant and observations of the accelerating Universe using supernovae. The time-ordered data, maps, and power spectra from WMAP can be found at http://lambda.gsfc.nasa.gov along with 13 papers by the WMAP science team describing the results in detail.

Wright, E. L.

2003-12-01

177

Phenomena resulting from hypergolic contact  

NASA Astrophysics Data System (ADS)

Understanding hypergolic ignition is critical for the safe and successful operation of hypergolic engines. The complex coupling of physical and chemical processes during hypergolic ignition complicates analysis of the event. Presently, hypergolic ignition models cannot simulate liquid contact and mixing or liquid-phase chemical reactions, and rely on experimental results for validation. In some cases, chemical kinetics of hypergolic propellants and fluid dynamics of droplet collisions couple to produce unexpected phenomena. This research investigates contact between droplets and pools of liquid hypergolic propellants under various conditions in order to investigate these liquid-phase reactions and categorize the resulting interaction. During this experiment, 142 drop tests were performed to investigate phenomena associated with hypergolic contact of various propellants. A drop of fuel impacted a semi-ellipsoidal pool of oxidizer at varying impact velocities and impact geometries. The temperature, pressure, ambient atmosphere, and propellant quality were all controlled during the experiment, as these factors have been shown to influence hypergolic ignition delay. Three distinct types of impacts were identified: explosions, bounces, and splashes. The impact type was found to depend on the impact Weber number and impact angle. Splashes occurred above a critical Weber number of 250, regardless of impact angle. Explosions occurred for Weber numbers less than 250, and for impact angles less than seven degrees. If the impact angle was greater than seven degrees then the test resulted in a bounce. Literature related to explosions induced by hypergolic contact was reviewed. Explosions were observed to occur inconsistently, a feature that has never been addressed. Literature related to non-reactive splashing, bouncing, and coalescence was reviewed for insight into the explosion phenomenon. I propose that the dependence of impact angle on the transition between explosion and bounce impacts is partially responsible for the explosion inconsistency in literature. No explosions were observed for the alternative hypergolic propellants tested, which could be due to lower gas production rates or the absence of reactive intermediate species present in certain propellant chemistry. In either case, the fluid dynamics of the impact was consistent, but the chemical kinetics of the propellants were different, and presumably, the two did not couple as strongly. Based on the results, explosions appear to be a mixing driven process caused by the coupling between the fluid dynamics of the impact and the chemical kinetics of the propellants. Upon contact, the fuel drop merges with the oxidizer pool. Liquid-phase neutralization reactions produce enough heat to vaporize propellants, which then accumulate within a gas pocket inside the pool. Exothermic gas-phase reactions result in an explosion originating from within the propellant pool. In addition to investigation of the explosion phenomenon, high-speed videos were taken of the first microseconds of hypergolic contact to observe the liquid-phase chemical reactions in detail. The delay between contact and first gas production was measured to be between 20 and 200 microseconds for monomethylhydrazine and red fuming nitric acid. This delay provides insight into the speed of the liquid-phase chemical reactions, and has helped to calibrate liquid-based ignition models. This research has categorized different interactions resulting from hypergolic contact, and found that the impact Weber number and impact angle were the controlling parameters. I propose that slight changes in the impact angle went unobserved by previous researchers and were partially responsible for the explosion inconsistency in literature. Microsecond scale time delays were measured between contact and gas production and have been used to calibrate previously unknown rate constants of liquid-phase chemical reactions.

Forness, Jordan M.

178

Visible nulling coronagraph testbed results  

NASA Astrophysics Data System (ADS)

We report on our recent laboratory results with the NASA/Goddard Space Flight Center (GSFC) Visible Nulling Coronagraph (VNC) testbed. We have experimentally achieved focal plane contrasts of 1 x 108 and approaching 109 at inner working angles of 2 * wavelength/D and 4 * wavelength/D respectively where D is the aperture diameter. The result was obtained using a broadband source with a narrowband spectral filter of width 10 nm centered on 630 nm. To date this is the deepest nulling result with a visible nulling coronagraph yet obtained. Developed also is a Null Control Breadboard (NCB) to assess and quantify MEMS based segmented deformable mirror technology and develop and assess closed-loop null sensing and control algorithm performance from both the pupil and focal planes. We have demonstrated closed-loop control at 27 Hz in the laboratory environment. Efforts are underway to first bring the contrast to > 109 necessary for the direct detection and characterization of jovian (Jupiter-like) and then to > 1010 necessary for terrestrial (Earth-like) exosolar planets. Short term advancements are expected to both broaden the spectral passband from 10 nm to 100 nm and to increase both the long-term stability to > 2 hours and the extent of the null out to a ~ 10 * wavelength / D via the use of MEMS based segmented deformable mirror technology, a coherent fiber bundle, achromatic phase shifters, all in a vacuum chamber at the GSFC VNC facility. Additionally an extreme stability textbook sized compact VNC is under development.

Lyon, Richard G.; Clampin, Mark; Woodruff, Robert A.; Vasudevan, Gopal; Thompson, Patrick; Petrone, Peter; Madison, Timothy; Rizzo, Maxime; Melnick, Gary; Tolls, Volker

2009-08-01

179

Mechanisms Resulting in Induced Polarization  

NASA Astrophysics Data System (ADS)

Induced polarization (IP) has received considerable attention in the last decade. The technique provides more information about the subsurface than DC resistivity and has potential for detecting various contaminants in the subsurface including non-polar organic compounds and heavy metals. IP may also be applied to determine the hydraulic conductivity of geologic materials and to the study of biogeophysics. In this technique, an alternating electrical current is injected in two electrodes and the resulting voltage response is measured in separate electrodes. In the frequency domain both a phase lag and the absolute resistance is recorded. As with most geophysical techniques, field investigations can be performed with minimal intrusion. One challenge, however, stems from the fact that the geological property of interest is not measured but the collected data need to be interpreted to provide practical value. Also, despite the recent successes, the underlying polarization mechanisms are not well understood. A better understanding of polarization mechanism would increase the usefulness of IP. It is clear that polarization at solid-water interfaces plays a key role, but several competing mechanisms make it challenging to determine their relative importance. Polarization of the two parts of the electrical double layer, the Stern and the diffuse layers, along with membrane and Maxwell-Wagner polarizations have been suggested to be responsible for the observed IP response. We use a mechanistic and numerical model to explain the response of induced polarization in silica sand in the presence of sodium chloride at various pH. The model is based on surface complexation and on the migration of counterions within the Stern and diffuse layers. In our experimental results, the imaginary part of the complex conductivity reaches a minimum near the isoelectric point consistent with counterions polarizing the sand grains. The model is capable of explaining experimentally observed IP response and data presented in the literature. The results indicate that polarization of the Stern layer is more significant than diffuse layer and membrane polarization.

Skold, M.; Revil, A.; Vaudelet, P.; Martinez, F.

2010-12-01

180

Charm physics results from SELEX  

SciTech Connect

The SELEX experiment (ET781) [1] at Fermilab is a new fixed target multistage spectrometer with high acceptance for forward interactions and decays. It took data in 1996-97 with 600 GeV {sigma}{sup -}, {pi}{sup -} and 540 GeV p beams, collecting large sample of charm decays. Preliminary results on charm--anticharm production asymmetries, {lambda}{sub c}{sup +} production x{sub F} dependence in different beams, {lambda}{sub c}{sup +} lifetime, and the first observation of the Cabibbo-suppressed decay {xi}{sub c}{sup +}{yields}pK{sup -}{pi}{sup +} are presented.

Kushnirenko, Alexander Y. [Physics Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)

1999-02-17

181

RSG Deployment Case Testing Results  

SciTech Connect

The RSG deployment case design is centered on taking the RSG system and producing a transport case that houses the RSG in a safe and controlled manner for transport. The transport case was driven by two conflicting constraints, first that the case be as light as possible, and second that it meet a stringent list of Military Specified requirements. The design team worked to extract every bit of weight from the design while striving to meet the rigorous Mil-Spec constraints. In the end compromises were made primarily on the specification side to control the overall weight of the transport case. This report outlines the case testing results.

Owsley, Stanley L.; Dodson, Michael G.; Hatchell, Brian K.; Seim, Thomas A.; Alexander, David L.; Hawthorne, Woodrow T.

2005-09-01

182

Solar Neutrino Results from Sage  

NASA Astrophysics Data System (ADS)

Since January of 1990, the Russian-American Solar neutrino Experiment has carried out measurements of the capture rate of solar neutrinos on metallic gallium in a radiochemical experiment at the Baksan Neutrino Observatory. The measured capture rate from the 71Ge K- and L-peak counting data through December 2000 is 77.0 +7.1/-6.9 SNU, where the uncertainties statistical and systematic, respectively. This result represents a 6 depression in the neutrino flux compared with predicted Standard Solar Model rates. The experimental procedures and data analysis are presented.

Gavrin, Vladimir N.

2003-02-01

183

Implicit Media Knowledge Experiments & Results  

NASA Astrophysics Data System (ADS)

Implicit Media Knowledge aims to provide relevant information related to visual media without effort. It is based on the analysis of media usage from several users (e.g. a community). Algorithms based on clustering methods that extract relevant information (e.g. tags, taxonomy trees) related to a media from its usage are detailed. To validate our new approach, we propose to apply our concept and algorithms on a specific media use such as the analysis of how multiple users organize their media files. Significant results of two experiments will be highlighted. Perspectives of our work will be finally presented.

Ly, Muy-Chu; Germaneau, Alexis

2011-08-01

184

Electroweak results from the Tevatron  

SciTech Connect

Results from the CDF and D{O} experiments are presented on properties of the W{plus_minus} and Z{sup 0} gauge bosons using final states containing electrons and muons based on large integrated luminosities. In particular, measurements of the W{plus_minus} and Z{sup 0} production cross sections, the W-charge asymmetry and the CDF measurement of the W-mass are summarized. Gauge boson self interactions axe measured by studying di-gauge boson production and limits on anomalous gauge boson couplings axe discussed.

Demarteau, M.

1995-10-01

185

CP violation results from CDF  

SciTech Connect

We present world-leading results on CP-violating asymmetries and branching fractions of several decay modes of B{sup 0}, B{sub s}{sup 0}, and {Lambda}{sub b} hadrons into charmless two-body, and of B{sup {+-}} into charm, final states collected by the CDF detector. We also report a new measurement of CP-violating asymmetries in D*{sup {+-}}-tagged D{sup 0} {yields} h{sup +}h{sup -} (h = K or {pi}) decays, where any enhancement from the Standard Model prediction would be unambiguous evidence for New Physics.

Napier, Austin; /Tufts U.

2012-01-01

186

Current MINOS neutrino oscillation results  

NASA Astrophysics Data System (ADS)

The MINOS experiment is now making precise measurements of the ?? disappearance oscillations seen in atmospheric neutrinos, tests possible disappearance to sterile ? by measuring the neutral current flux, and has extended our reach towards the so far unseen ?13 by looking for ?e appearance in the ?? beam. It does so by using the intense, well-understood NuMI neutrino beam created at Fermilab and observing it 735km away at the Soudan Mine in Northeast Minnesota. High-statistics studies of the neutrino interactions themselves and the cosmic rays seen by the MINOS detectors have also been made. Results from MINOS' first three years of operations will be presented.

Habig, Alec; Minos Collaboration

2010-01-01

187

Toxocariasis resulting in seeming allergy.  

PubMed

Toxocara canis is an intestinal nematode affecting dogs and cats that causes human infestations by ingestion of embryonated eggs excreted in dogs' faeces. Humans are transport hosts, in whom the larvae do not develop to adult worms, but may migrate to various tissues and organs, and survive for several years, giving rise to several clinical symptoms, which include allergy-like presentations. We report three cases presenting as dermatitis, rhinitis, asthma, and conjunctivitis which were diagnosed and unsuccessfully treated as allergy. The correct diagnosis was established after detecting anti-Toxocara antibodies by Western blotting. All clinical symptoms showed improvement after starting treatment with mebendazole and subsequent courses of the antiparasitic drug resulted in full recovery. This suggests the possible role of Toxocara canis in inducing chronic symptoms of allergic type. This is particularly important for asthma, where it has been demonstrated that Toxocara canis infection causes allergic inflammation in the lungs associated with bronchial hyperreactivity. On the other hand, in our patients with asthma and with dermatitis the positive results from allergy tests were a confounding factor in delaying the correct diagnosis, which was finally obtained by the detection of antibodies to Toxocara canis. PMID:20124608

Qualizza, Rosanna; Megali, Raffaella; Incorvaia, Cristoforo

2009-09-01

188

AXAF hypervelocity impact test results  

NASA Technical Reports Server (NTRS)

Composite and honeycomb panels are commonly used for spacecraft structural components. The impact test results and analysis of six different composite and honeycomb combinations for use on the advanced X-ray astrophysics facility (AXAF) are reported. The AXAF consists of an X-ray telescope and the associated detecting devices attached to an octagonal spacecraft with an internal propulsion system. The spacecraft's structural panels and optical bench are made of two different graphite fiber reinforced polyimides or composite panels bonded to either side of an aluminum honeycomb. The instrument is required to have at least a 0.92 probability of no failure of any of the critical elements due to meteoroids and debris. In relation to the no-failure probability determination in its low earth orbit environment, hypervelocity impact testing was performed to determine the ballistic limit range and the extent of damage due to impact. The test results for a power and signal cable bundle located behind a panel are presented. Tests planned for a multilayer insulation (MLI) blanket and four types of cable bundles are discussed.

Frost, Cynthia L.; Rodriguez, Pedro I.

1997-01-01

189

New results in vortex statics  

NASA Astrophysics Data System (ADS)

Vortex statics was the name Lord Kelvin gave to the study of vortex configurations that move without change of shape or size. Particularly for point vortices in 2D ideal hydrodynamics this subject has spawned a large literature. We report on some recent results in which configurations of low symmetry and `unexpected' geometrical properties have been obtained. These include completely asymmetric, finite patterns of identical point vortices, and infinite, quasi-crystal-like configurations of three different kinds of point vortices. Apart from their intrinsic interest as singular solutions of the 2D Euler equation, some of these patterns are now emerging in experimental realizations of vortex flows. The asymmetric patterns are unstable, to the extent we have been able to check, which means that they arise as transients during a relaxation to a global energy minimum. They have spatial attributes that one might associate with a turbulent flow state, but entirely trivial temporal evolution.

Aref, Hassan; Vainchtein, Dmitri; Stremler, Mark A.

2000-11-01

190

Hyperon physics results from SELEX  

SciTech Connect

In parallel to charm hadroproduction the experiment SELEX (E781) at Fermilab is pursuing a rich hyperon physics program. SELEX employs a 600 GeV/c beam consisting of 50{percent}thinsp{Sigma}{sup {minus}} and {pi}{sup {minus}} each. The three-stage magnetic spectrometer covering 0.1{le}x{sub F}{le}1.0 features a high-precision silicon vertex system, broad-coverage particle identification using TRD and RICH, and a three-stage lead glass photon calorimeter. First results for the {Sigma}{sup {minus}} charge radius, total {Sigma}{sup {minus}}-nucleon cross sections, and a new upper limit for the radiative width of the {Sigma}(1385){sup {minus}} are presented. {copyright} {ital 1999 American Institute of Physics.}

Selex Collaboration

1999-02-01

191

Charm physics results from SELEX  

SciTech Connect

The SELEX experiment (ET781) [1] at Fermilab is a new fixed target multistage spectrometer with high acceptance for forward interactions and decays. It took data in 1996{endash}97 with 600 GeV {Sigma}{sup {minus}}, {pi}{sup {minus}} and 540 GeV {ital p} beams, collecting large sample of charm decays. Preliminary results on charm{emdash}anticharm production asymmetries, {Lambda}{sub c}{sup +} production x{sub F} dependence in different beams, {Lambda}{sub c}{sup +} lifetime, and the first observation of the Cabibbo-suppressed decay {Xi}{sub c}{sup +}{r_arrow}pK{sup {minus}}{pi}{sup +} are presented. {copyright} {ital 1999 American Institute of Physics.}

SELEX Collaboration

1999-02-01

192

Hyperon physics results from SELEX  

SciTech Connect

In parallel to charm hadroproduction the experiment SELEX (E781) at Fermilab is pursuing a rich hyperon physics program. SELEX employs a 600 GeV/c beam consisting of 50% {sigma}{sup -} and {pi}{sup -} each. The three-stage magnetic spectrometer covering 0.1{<=}x{sub F}{<=}1.0 features a high-precision silicon vertex system, broad-coverage particle identification using TRD and RICH, and a three-stage lead glass photon calorimeter. First results for the {sigma}{sup -} charge radius, total {sigma}{sup -}-nucleon cross sections, and a new upper limit for the radiative width of the {sigma}(1385){sup -} are presented.

Eschrich, Ivo [Max Planck Institute for Nuclear Physics, Heidelberg (Germany)

1999-02-17

193

Initial Blackbeard power survey results  

SciTech Connect

The Blackbeard broadband VHF radio receiver is in low-earth orbit aboard the ALEXIS satellite. The receiver has been used to measure the transmitted power in four VHF bands (55.2-75.8, 28.0-94.8, 132.3-152.2, and 107.7-166.0 MHz) over quiet and noisy parts of the earth. The authors present the results of the survey and discuss their implications. They find that there are remote ocean areas over which the observed spectrum is largely free of man-made interference, but that the spectrum over most of the earth is dominated by broadcast VHF signals. The signal characteristics observed over a given area are quite constant when observed at different times of day and at intervals of several weeks to months. It appears that in many cases the bulk of the signal power is coming from a small number of sources.

Murphy, T.; Devenport, J.; Holden, D.

1996-06-01

194

Results from HRS at PEP  

SciTech Connect

The High Resolution Spectrometer (HRS) has been collecting data at PEP since the end of 1981 and has now accumulated 120 pb/sup -1/ of integrated luminosity. The results of analyses are presented in the following areas: (1) QED and electroweak tests, (2) scalar electron search, (3) inclusive hadron production, (4) D/sup 0/, D/sup +/ and D* production, and studies of quark fragmentation. Only the 20 pb/sup -1/ of integrated luminosity obtained during our first year of running has been completely analyzed and this provides the data sample for most of the above topics. For others a preliminary analysis of a total sample of 80 pb/sup -1/ is reported. 20 references.

Weiss, J.M.

1983-01-01

195

Airfreight forecasting methodology and results  

NASA Technical Reports Server (NTRS)

A series of econometric behavioral equations was developed to explain and forecast the evolution of airfreight traffic demand for the total U.S. domestic airfreight system, the total U.S. international airfreight system, and the total scheduled international cargo traffic carried by the top 44 foreign airlines. The basic explanatory variables used in these macromodels were the real gross national products of the countries involved and a measure of relative transportation costs. The results of the econometric analysis reveal that the models explain more than 99 percent of the historical evolution of freight traffic. The long term traffic forecasts generated with these models are based on scenarios of the likely economic outlook in the United States and 31 major foreign countries.

1978-01-01

196

Some Results on Inverse Scattering  

NASA Astrophysics Data System (ADS)

A review of some of the author's results in the area of inverse scattering is given. The following topics are discussed: (1) Property C and applications, (2) Stable inversion of fixed-energy 3D scattering data and its error estimate, (3) Inverse scattering with “incomplete” data, (4) Inverse scattering for inhomogeneous Schrödinger equation, (5) Krein's inverse scattering method, (6) Invertibility of the steps in Gel'fand-Levitan, Marchenko, and Krein inversion methods, (7) The Newton-Sabatier and Cox-Thompson procedures are not inversion methods, (8) Resonances: existence, location, perturbation theory, 9) Born inversion as an ill-posed problem, (10) Inverse obstacle scattering with fixed-frequency data, (11) Inverse scattering with data at a fixed energy and a fixed incident direction, (12) Creating materials with a desired refraction coefficient and wave-focusing properties.

Ramm, A. G.

197

Wake Vortex Algorithm Scoring Results  

NASA Technical Reports Server (NTRS)

This report compares the performance of two models of trailing vortex evolution for which interaction with the ground is not a significant factor. One model uses eddy dissipation rate (EDR) and the other uses the kinetic energy of turbulence fluctuations (TKE) to represent the effect of turbulence. In other respects, the models are nearly identical. The models are evaluated by comparing their predictions of circulation decay, vertical descent, and lateral transport to observations for over four hundred cases from Memphis and Dallas/Fort Worth International Airports. These observations were obtained during deployments in support of NASA's Aircraft Vortex Spacing System (AVOSS). The results of the comparisons show that the EDR model usually performs slightly better than the TKE model.

Robins, R. E.; Delisi, D. P.; Hinton, David (Technical Monitor)

2002-01-01

198

Neutrino Oscillation Results from MINOS  

NASA Astrophysics Data System (ADS)

The Main Injector Neutrino Oscillation Search (MINOS) long baseline experiment has been actively taking beam data since 2005, having already accumulated 2.6E20 protons-on-target. MINOS uses the most powerful neutrino beam currently in operation measured in two locations: at Fermilab, close to beam production, and 735 km downstream, in Northern Minnesota. By observing the oscillatory structure in the neutrino energy spectrum, MINOS can make the most precise measurement of the mass-square difference neutrino mixing parameter in the atmospheric sector. In this talk, The latest MINOS neutrino oscillation results are presented, along with a discussion of the MINOS sensitivity to other neutrino oscillation phenomena, such as the nu_mu into nu_e subdominant oscillation mode and oscillations into sterile neutrinos.

Sousa, Alexandre

199

CMS Status and First Results  

NASA Astrophysics Data System (ADS)

After nearly two decades of design, construction, commissioning, and preparation for physics, the CMS detector will be operated with colliding proton beams in late 2009 and much of 2010. After a short period of operation at 900 GeV center of mass energy, the LHC will have two running periods in which it will ramp up to collision energies of 7 TeV and 8-10 TeV, respectively. This will be new territory in the history of hadron colliders. In this talk I will present the readiness and performance of the CMS detector as established in several stages of commissioning, provide an overview of the CMS plan for very early physics studies and finally, I will also provide first results of the performance of CMS in pp collisions at 900 GeV and 7 TeV if they are available. )

Incandela, Joseph

2010-02-01

200

SMART-1 Payload First Results  

NASA Astrophysics Data System (ADS)

We present first results from SMART-1's science and technology payload, with a total mass of some 19 kg, featuring many innovative instruments and advanced technologies. A miniaturised high-resolution camera (AMIE) for lunar surface imaging, a near-infrared point-spectrometer (SIR) for lunar mineralogy investigation, and a very compact X-ray spectrometer (D-CIXS) with a new type of detector and micro-collimator which will provide fluorescence spectroscopy and imagery of the Moon's surface elemental composition. The payload also includes an experiment (KaTE) aimed at demonstrating deep-space telemetry and telecommand communications in the X and Ka-bands, a radio-science experiment (RSIS), a deep space optical link (Laser-Link Experiment), using the ESA Optical Ground station in Tenerife, and the validation of a system of autonomous navigation (OBAN) based on image processing. SMART-1 lunar science investigations include studies of the chemical composition of the Moon, of geophysical processes (volcanism, tectonics, cratering, erosion, deposition of ices and volatiles) for comparative planetology, and high resolution studies in preparation for future steps of lunar exploration. The mission could address several topics such as the accretional processes that led to the formation of rocky planets, and the origin and evolution of the Earth-Moon system. The SMART-1 observations will be coordinated with Japanese missions Lunar-A and SELENE, to answer open questions about comparative planetology, the origin of the Earth --Moon system, the early evolution of life, the planetary environment and the existence of in-situ resources necessary to support human presence (e.g. water, oxygen). With their science and technology results, these missions can be considered as preparatory missions for future robotic and human exploration of the solar system.

Foing, B. H.; SMART-1 Science Technology Working Team

201

Huygens GCMS Results from Titan  

NASA Technical Reports Server (NTRS)

The Huygens Probe executed a successful entry, descent and impact on the Saturnian moon of Titan on January 14, 2005. The Gas Chromatograph Mass Spectrometer (GCMS) instrument conducted isotopic and compositional measurements throughout the two and one half hour descent from 146 km altitude, and on the surface for 69 minutes until loss of signal from the orbiting Cassini spacecraft. The GCMS incorporated a quadrupole mass filter with a secondary electron multiplier detection system. The gas sampling system provided continuous direct atmospheric composition measurements and batch sampling through three gas chromatographic (GC) columns, a chemical scrubber and a hydrocarbon enrichment cell. The GCMS gas inlet was heated to prevent condensation, and to evaporate volatiles from the surface after impact. Data products from the GCMS included altitude profiles of the major atmospheric constituents dinitrogen (N2) and methane (CH4), isotope ratios of 14N/15N, 12C/13C, and D/H, mole fractions of radiogenic argon (40Ar) and primordial argon (36Ar), and upper limits on the mole fractions of neon, krypton and xenon, which were found to be absent. Surface measurements confirmed the presence of ethane (C2H6) and cyanogen (C2N2). Later data products expanded atmospheric profiles to include the surface response of C2N2. C2H6, acetylene (C2H2), and carbon dioxide (CO2). More recent results include the profiles of benzene (C6H6) and molecular hydrogen (H2). The GCMS data are being further analyzed to obtain higher precision results and to identify other trace species ion the atmosphere and evaporating from the surface.

Niemann, Hasso B.; Demick, Jaime; Kasprzak, Wayne; Atreya, Sushil; Owen, Tobias

2007-01-01

202

Comparative Soot Diagnostics: Preliminary Results  

NASA Technical Reports Server (NTRS)

The motivation for the Comparative Soot Diagnostics (CSD) experiment lies in the broad practical importance of understanding combustion generated particulate. Depending upon the circumstances, particulate matter can affect the durability and performance of combustion equipment, can be a pollutant, can be used to detect fires and, in the form of soot, can be the dominant source of radiant energy from flames. The nonbuoyant structure of most flames of practical interest makes understanding of soot processes in low gravity flames important to our ability to predict fire behavior on earth. These studies also have direct applications to fire safety in human-crew spacecraft, since smoke is the indicator used for automated detection in current spacecraft. In the earliest missions (Mercury, Gemini and Apollo), the crew quarters were so cramped that it was considered reasonable that the astronauts would rapidly detect any fire. The Skylab module, however, included approximately 20 UV-sensing fire detectors. The Space Shuttle has 9 particle-ionization smoke detectors in the mid-deck and flight deck and Spacelab has six additional particle-ionization smoke detectors. The designated detectors for the ISS are laser-diode, forward-scattering, smoke or particulate detectors. Current plans for the ISS call for two detectors in the open area of the module, and detectors in racks that have both cooling air flow and electrical power. Due to the complete absence of data concerning the nature of particulate and radiant emission from incipient and fully developed low-g fires, all three of these detector systems were designed based upon l-g test data and experience. As planned mission durations and complexity increase and the volume of spacecraft increases, the need for and importance of effective, crew-independent, fire detection grows significantly. To provide this level of protection, more knowledge is needed concerning low-gravity fire phenomena and, in particular, how they might be detected and suppressed. Prior to CSD, no combustion-generated particulate samples had been collected near the flame zone for well-developed microgravity flames. All of the extant data either came from drop tower tests and therefore only corresponded to the early stages of a fire or were collected far from the flame zone. The fuel sources in the drop tower tests were restricted to laminar gas-jet diffusion flames and very rapidly overheated wire insulation. The gas-jet tests indicated, through thermophoretic sampling, (2) that soot primaries and aggregates (groups of primary particles) in low-gravity may be significantly larger than those in normal gravity (1-g). This raises new scientific questions about soot processes as well as practical issues for particulate size sensitivity and detection alarm threshold levels used in on-orbit smoke detectors. Preliminary tests in the 2.2 second drop tower suggest that particulate generated by overheated wire insulation may be larger in low-g than in 1-g. Transmission Electron Microscope (TEM) grids downstream of the fire region in the Wire Insulation Flammability experiment as well as visual observation of long string-like aggregates, further confirm this suggestion. The combined impact of these limited results and theoretical predictions is that, as opposed to extrapolation from l-g data, direct knowledge of low-g combustion particulate is needed for more confident design of smoke detectors for spacecraft. This paper describes the operation and preliminary results of the CSD, a project conceived and developed at NASA Lewis Research Center. The CSD flight experiment was conducted in the Middeck Glovebox Facility (MGBX) on USMP-3. The project is support by NASA Headquarters Microgravity Science and Applications Division and Code Q. The results presented here are from the microgravity portion of the experiment, including the temporal response of the detectors and average sizes of the primary and aggregate particles captured on the thermophoretic probes.

Urban, David L.; Griffin, DeVon W.; Gard, Melissa Y.

1997-01-01

203

Genesis Discovery Mission Science Results  

NASA Astrophysics Data System (ADS)

Genesis returned samples of high purity materials exposed to the solar wind for 27 months, including separate samples of 3 solar wind regimes. Science objectives are to measure solar isotopic and elemental abundances to a precision sufficient for planetary science problems. A crash upon Earth return resulted in massive breakage of collector materials, serious losses of the amounts of materials, and particulate surface contamination. However, atoms are not destroyed by impact. We have over 15,000 pieces of collector materials greater than 3 mm in size. We can show that the implanted solar wind resides safely beneath the surface of the collector materials, while the contamination is on the surface. We have only 100 A of depth margin, but, because we are a sample return mission, we can use all of 21^st century technology to exploit this margin. We were fortunate in that 3/5 materials for dedicated experiments survived in relatively good shape. A major issue is the extent to which the acceleration of the solar wind has modified elemental and isotopic abundances from the photospheric values. Spacecraft studies show that elements with first ionization potential (FIP) greater than 9 eV are depleted in the solar wind relative to lower FIP elements, but the lower FIP elements, which make up most of terrestrial planet material, appear unfractionated. Our preliminary Genesis Fe/Mg is 0.78 and in good agreement with both spacecraft data and the photospheric absorption line ratio. Little is known about isotopic fractionation in the solar wind, but our regime samples represent materials formed by different solar processes. The isotopic compositions of Ne and Ar in the different regime samples agree with permil level precision. There is no evidence for isotope fractionation in the solar wind relative to the photosphere. A sample of bulk metallic glass (BMG) which etches uniformly with nitric acid vapor was recovered intact. This sample provides a check on the presence of higher energy (SEP) solar ions with different isotopic compositons. Extensive lunar sample analyses indicated an SEP 20Ne/22Ne ratio of 11.4 compared to 13.7 for the solar wind. BMG etching produced a continuously dropping 20/22 ratio down to at least 10.8. The trend matches exactly what is seen in lunar samples; however, the trend can be quantitatively reproduced by allowing for the differential implantation of 22Ne and 20 Ne, and differential implantation appears to explain the lunar results as well.

Burnett, D. S.

2006-08-01

204

TFTR D-T results  

SciTech Connect

Temperatures, densities and confinement of deuterium plasmas confined in tokamaks have been achieved within the last decade that are approaching those required for a D-T reactor. As a result, the unique phenomena present in a D-T reactor plasma (D-T plasma confinement, alpha confinement, alpha heating and possible alpha driven instabilities) can now be studied in the laboratory. Recent experiments on the Tokamak Fusion Test Reactor (TFTR) have been the first magnetic fusion experiments to study plasmas with reactor fuel concentrations of tritium. The injection of {approximately} 20 MW of tritium and 14 MW of deuterium neutral beams into the TFTR produced a plasma with a T/D density ratio of {approximately}1 and yielded a maximum fusion power of {approximately} 9.2 MW. The fusion power density in the core of the plasma was {approximately} 1.8 MW m{sup {minus}3} approximating that expected in a D-T fusion reactor. A TFTR plasma with T/D density ratio of {approximately} 1 was found to have {approximately} 20% higher energy confinement time than a comparable D plasma, indicating a confinement scaling with average ion mass, A, of {tau}{sub E} {approximately} A{sup 0.6}. The core ion temperature increased from 30 keV to 37 keV due to a 35% improvement of ion thermal conductivity. Using the electron thermal conductivity from a comparable deuterium plasma, about 50% of the electron temperature increase from 9 keV to 10.6 keV can be attributed to electron heating by the alpha particles. The {approx} 5% loss of alpha particles, as observed on detectors near the bottom edge of the plasma, was consistent with classical first orbit loss without anomalous effects. Initial measurements have been made of the confined energetic alphas and the resultant alpha ash density. At fusion power levels of 7.5 MW, fluctuations at the Toroidal Alfven Eigenmode frequency were observed by the fluctuation diagnostics. However, no additional alpha loss due to the fluctuations was observed.

Meade, D.M.

1994-09-01

205

RESULTS OF SUPPLEMENTAL MST STUDIES  

SciTech Connect

The current design of the Salt Waste Processing Facility (SWPF) includes an auxiliary facility, the Actinide Finishing Facility, which provides a second contact of monosodium titanate (MST) to remove soluble actinides and strontium from waste if needed. This treatment will occur after cesium removal by Caustic-Side Solvent Extraction (CSSX). Although the process changes and safety basis implications have not yet been analyzed, provisions also exist to recover the MST from this operation and return to the initial actinide removal step in the SWPF for an additional (third) contact with fresh waste. A U.S. Department of Energy (DOE) request identified the need to study the following issues involving this application of MST: Determine the effect of organics from the solvent extraction (CSSX) process on radionuclide sorption by MST; Determine the efficiency of re-using MST for multiple contacts; and Examine fissile loading on MST under conditions using a waste containing significantly elevated concentrations of plutonium, uranium, neptunium, and strontium. This report describes the results of three experimental studies conducted to address these needs: (1) Addition of high concentrations of entrained CSSX solvent had no noticeable effect, over a two week period, on the sorption of the actinides and strontium by MST in a direct comparison experiment. (2) Test results show that MST still retains appreciable capacity after being used once. For instance, reused MST--in the presence of entrained solvent--continued to sorb actinides and strontium. (3) A single batch of MST was used to sequentially contact five volumes of a simulant solution containing elevated concentrations of the radionuclides of interest. After the five contacts, we measured the following solution actinide loadings on the MST: plutonium: 0.884 {+-} 0.00539 wt % or (1.02 {+-} 0.0112) E+04 {micro}g/g MST, uranium: 12.1 {+-} 0.786 wt % or (1.40 {+-} 0.104) E+05 {micro}g/g MST, and neptunium: 0.426 {+-} 0.00406 wt % or (4.92 {+-} 0.0923) E+03 {micro}g/g MST. (4) Over the duration of an experiment with the sequential strikes, the ability of MST to sorb actinides improved with additional strikes. This trend is counter-intuitive, but is confirmed by replicate experiments for plutonium, uranium, and neptunium. Conversely, over the duration of the experiment, the ability of MST to sorb strontium decreased the more it was used. This trend is confirmed by replicate experiment.

Peters, T; David Hobbs, D; Samuel Fink, S

2006-07-24

206

Geophysical Model Research and Results  

SciTech Connect

Geophysical models constitute an important component of calibration for nuclear explosion monitoring. We will focus on four major topics: (1) a priori geophysical models, (2) surface wave models, (3) receiver function derived profiles, and (4) stochastic geophysical models. The first, a priori models, can be used to predict a host of geophysical measurements, such as body wave travel times, and can be derived from direct regional studies or even by geophysical analogy. Use of these models is particularly important in aseismic regions or regions without seismic stations, where data of direct measurements might not exist. Lawrence Livermore National Laboratory (LLNL) has developed the Western Eurasia and North Africa (WENA) model which has been evaluated using a number of data sets, including travel times, surface waves, receiver functions, and waveform analysis (Pasyanos et al., 2004). We have joined this model with our Yellow Sea - Korean Peninsula (YSKP) model and the Los Alamos National Laboratory (LANL) East Asia model to construct a model for all of Eurasia and North Africa. Secondly, we continue to improve upon our surface wave model by adding more paths. This has allowed us to expand the region to all of Eurasia and into Africa, increase the resolution of our model, and extend results to even shorter periods (7 sec). High-resolution models exist for the Middle East and the YSKP region. The surface wave results can be inverted either alone, or in conjunction with other data, to derive models of the crust and upper mantle structure. We are also using receiver functions, in joint inversions with the surface waves, to produce profiles directly under seismic stations throughout the region. In a collaborative project with Ammon, et al., they have been focusing on stations throughout western Eurasia and North Africa, while we have been focusing on LLNL deployments in the Middle East, including Kuwait, Jordan, and the United Arab Emirates. Finally, we have been exploring methodologies such as Markov Chain Monte Carlo (MCMC) to generate data-driven stochastic models. We have applied this technique to the YSKP region using surface wave dispersion data, body wave travel time data, and receiver functions.

Pasyanos, M; Walter, W; Tkalcic, H; Franz, G; Flanagan, M

2004-07-07

207

The ROSAT Results Archive (RRA)  

NASA Astrophysics Data System (ADS)

The ROSAT Results Archive (RRA) is currently being produced by the five participating ROSAT institu­tions: Max­Planck­Institut f¨ur extraterrestrische Physik (MPE), Goddard Space Flight Center (GSFC),Smithsonian Astrophysical Observatory (SAO), Leicester University (LU), and Astrophysikalisches Institut Potsdam (AIP). It will be a public archive that contains all the sources in all the released ROSAT HRI and PSPC pointed observations (about 5000 so far, and still increasing). All sources will be quality checked, both by automatic and by human interaction. Some sources will get quality flags indicating certain suspicious properties. The RRA is based on and part of the ROSAT Data Archive. Whereas the latter contains all the raw data of the pointed observations (e.g., arrival time and coordinates of each photon), the RRA will contain identified sources with quality flags. We expect the RRA to become publicly available in the third quarter of 1995, and it will contain verified sources in (almost) all pointings that are public at that time. From then on it will be fed continuously with quality­checked sequence as they become public. The RRA will be a very useful data base for all kinds of studies of ROSAT sources. It can be used both for individual or statistical studies, e.g. for correlations with catalogs in other wavelength regimes.

Wambsganss, J.; Boller, T.; Corcoran, M.; Dennerl, K.; Englhauser, J.; Gruber, R.; Haberl, F.; Harris, D.; Hasinger, G.; Petre, R.; Pietsch, W.; Priebe, A.; Pye, J.; Sembay, S.; Voges, W.; Watson, M.; Zimmermann, U.

208

Results of NSTX Heating Experiments  

SciTech Connect

The National Spherical Torus Experiment (NSTX) at Princeton is designed to assess the potential of the low-aspect-ratio spherical torus concept for magnetic plasma confinement. The plasma has been heated by up to 5 MW of neutral beam injection, NBI, at an injection energy of 90 keV and up to 6 MW of high harmonic fast wave, HHFW, at 30 MHz. NSTX has achieved beta T of 32%. A variety of MHD phenomena have been observed to limit eta. NSTX has now begun addressing E scaling, eta limits and current drive issues. During the NBI heating experiments, a broad Ti profile with Ti up to 2 keV, Ti > Te and a large toroidal rotation. Transport analysis suggests that the impurity ions have diffusivities approaching neoclassical. For L-Mode plasmas, E is up to two times the ITER-89P L-Mode scaling and exceeds the ITER-98pby2 H-Mode scaling in some cases. Transitions to H-Mode have been observed which result in an approximate doubling of tE. after the transition in some conditions. During HH FW heating, Te > Ti and Te up to 3.5 keV were observed. Current drive has been studied using coaxial helicity injection (CHI), which has produced 390 kA of toroidal current and HHFW, which has produced H-modes with significant bootstrap current fraction at low Ip, high q and high{sub etap}.

D. Mueller; M. Ono; M.G. Bell; R.E. Bell; M. Bitter; C. Bourdelle; D.S. Darrow; P.C. Efthimion; E.D. Fredrickson; D.A Gates; R.J. Goldston; L.R. Grisham; R.J. Hawryluk; K.W. Hill; J.C. Hosea; S.C. Jardin; H. Ji; S.M. Kaye; R. Kaita; H.W. Kugel; D.W. Johnson; B.P. LeBlanc; R. Majeski; E. Mazzucato; S.S. Medley; J.E. Menard; H.K. Park; S.F. Paul; C.K. Phillips; M.H. Redi; A.L. Rosenberg; C.H. Skinner; V.A. Soukhanovskii; B. Stratton; E.J Synakowski; G. Taylor; J.R. Wilson; S.J. Zweben; Y-K.M. Peng; R. Barry; T. Bigelow; C.E. Bush; M. Carter; R. Maingi; M. Menon; P.M. Ryan; D.W. Swain; J. Wilgen; 37 additional authors

2002-06-18

209

Results of NSTX Heating Experiments  

SciTech Connect

The National Spherical Torus Experiment (NSTX) at Princeton University, Princeton, NJ, is designed to assess the potential of the low-aspect-ratio spherical torus concept for magnetic plasma confinement. The plasma has been heated by up to 7 MW of neutral beam injection (NBI) at an injection energy of 100 keV and up to 6 MW of high harmonic fast wave (HHFW) at 30 MHz. NSTX has achieved of 32%. A variety of MHD phenomena have been observed to limit . NSTX has now begun addressing scaling, limits, and current drive issues. During the NBI heating experiments, a broad profile with up to 2 keV, and a large toroidal rotation were observed. Transport analysis suggests that the impurity ions have diffusivities approaching neoclassical. For L-Mode plasmas, is up to two times the ITER97L L-Mode scaling and exceeds the ITER98pby2 H-Mode scaling in some cases. Transitions to H-Mode have been observed which result in an approximate doubling of after the transition in some conditions. During HHFW heating, and up to 3.5 keV were observed. Current drive has been studied using both coaxial helicity injection with up to 390 kA of toroidal current and HHFW. HHFW has produced H-modes with significant bootstrap current fraction at low , high , and high .

Mueller, D. [Princeton Plasma Physics Laboratory (PPPL); Peng, Yueng Kay Martin [ORNL

2003-01-01

210

Improving operations: Metrics to Results  

NASA Technical Reports Server (NTRS)

As a result of the mission failure of the Mars Climate Orbiter (MCO) spacecraft in 1999, the Jet Propulsion Laboratory (JPL) initiated the development of a Mission Operations Assurance (MOA) program to be implemented across all flight projects managed by JPL. One of the initiatives undertaken in 2001 was the collection of data on command file errors occurring in the operational phase of the mission. This paper defines command file errors and how and where they occur in the operations process. It also describes the problem reporting system (PRS) in use for mission operations at JPL. We examine the recent modifications to the PRS that enable the collection of metrics, specifically on command file errors. This paper discusses what the data show us since metrics have been collected for the operational missions conducted by JPL. We examine the evolution of an operational working group initiative to evaluate proximate, contributing, and root causes for the errors. As part of this discussion we see what the metrics have indicated over a decade. At the macro level, we can say that the aggregate command file error rate has been cut to roughly one third of the initial 2001 level by the end of 2011. Additionally, we explore efficient and innovative means to continually integrate the findings and recommendations from the working group back into the flight operations environment.

Faris, Grant B.; Bryant, Larry W.

2012-01-01

211

Majorana Thermosyphon Prototype Experimental Results  

SciTech Connect

Objective The Majorana demonstrator will operate at liquid Nitrogen temperatures to ensure optimal spectrometric performance of its High Purity Germanium (HPGe) detector modules. In order to transfer the heat load of the detector module, the Majorana demonstrator requires a cooling system that will maintain a stable liquid nitrogen temperature. This cooling system is required to transport the heat from the detector chamber outside the shield. One approach is to use the two phase liquid-gas equilibrium to ensure constant temperature. This cooling technique is used in a thermosyphon. The thermosyphon can be designed so the vaporization/condensing process transfers heat through the shield while maintaining a stable operating temperature. A prototype of such system has been built at PNNL. This document presents the experimental results of the prototype and evaluates the heat transfer performance of the system. The cool down time, temperature gradient in the thermosyphon, and heat transfer analysis are studied in this document with different heat load applied to the prototype.

Fast, James E.; Reid, Douglas J.; Aguayo Navarrete, Estanislao

2010-12-17

212

Cosmic radioactivity and INTEGRAL results  

NASA Astrophysics Data System (ADS)

Gamma-ray lines from radioactive decay of unstable isotopes co-produced by nucleosynthesis in massive stars and supernova have been measured since more than thirty years. Over the past ten years, INTEGRAL complemented the first sky survey made by COMPTEL. The 26A1 isotope with 1 My decay time had been first direct proof of currently-ongoing nucleosynthesis in our Galaxy. This has now become a tool to study the ˜My history of specific source regions, such as massive-star groups and associations in nearby regions which can be discriminated from the galactic-plane background, and the inner Galaxy, where Doppler shifted lines add to the astronomical information about bar and spiral structure. Recent findings suggest that superbubbles show a remarkable asymmetry, on average, in the spiral arms of our galaxy. 60Fe is co-produced by the sources of 26A1, and the isotopic ratio from their nucleosynthesis encodes stellar-structure information. Annihilation gamma-rays from positrons in interstellar space show a puzzling bright and extended source region central to our Galaxy, but also may be partly related to nucleosynthesis. 56Ni and 44Ti isotope gamma-rays have been used to constrain supernova explosion mechanisms. Here we report latest results using the accumulated multi-year database of INTEGRAL observations, and discuss their astrophysical interpretations, connecting to other traces of cosmic radioactivity and to other cosmic messengers.

Diehl, Roland

2014-05-01

213

First results from Spacelab 2  

NASA Technical Reports Server (NTRS)

Preliminary results of physical experiments carried out during the Spacelab 2 Shuttle mission are summarized. Attention is given to experiments in the fields of plasma dynamics; solar physics; high-energy astrophysics; and astronomy. Plasma experiments included an ejectable plasma diagnosics package and measurements of the passive charging of the Shuttle vehicle in the surrounding space plasma. The solar physics instrument package consisted of a solar spectral irradiance monitor; a solar optical universal polarimeter (SOUP); and a solar helium abundance high-resolution telescope and spectrograph (HRTS). Astronomical observations were performed using a scanning infrared telescope (IRT) which consisted of a highly baffled herschelian telescope and 10 detectors covering wavelengths from 2 to 120 microns. Cosmic-ray nuclei were detected and analyzed using gas Cerenkov counters and a transition radiation detector. Addition experiments included a thin film fluid dynamics payload and analysis of blood samples taken from the mission specialists. Complete data records from the experiments have now been distributed for an analysis period which will take at least a year. A table listing the Spacelab 2 experiments and their principal investigators is provided.

Urban, E. W.

1986-01-01

214

Unfavourable results in craniofacial surgery  

PubMed Central

Craniofacial surgery is one of the newer subspecialties of plastic surgery and owes its birth to the pioneering work of Paul Tessier in the late sixties. Since then this challenging specialty work has been taken up by many centres around the word including India. Initial reports in late eighties and early nineties showed morbidity and mortality ranging from 1.6% to 4.3%. However over past few decades, with improved instrumentations, safer anaesthesia and cumulative experience of surgeons the morbidity and mortality has been brought down to as low as 0.1% in many centres in USA. In our centre at Post-graduate Institute, Chandigarh, the mortality rate is about 0.8% (4 out of 480 cases). The learning curve in this surgery is rather steep but with experience and a well-coordinated team work, results in this complex subspecialty can be improved. The infection is a major cause for worry but can be easily prevented by sound surgical principles and placing a vascularised tissue barrier between the extradural space and the nasopharynx/sinus mucosa.

Sharma, Ramesh Kumar

2013-01-01

215

Solar neutrinos: Interpretation of results  

NASA Astrophysics Data System (ADS)

Recent SNO results give strong evidence that the solar neutrinos undergo flavor conversion. The main issue now is the identification of the mechanism of conversion. The LMA MSW solution with ?m2 = (5-7)·10 -5 eV 2, tan 2? = 0.35-0.45 looks rather plausible: it fits well the experimental data and our new theoretical prejudices. In the LMA case, KamLAND should see (0.5 - 0.7) reduced signal. VAC-QVO and LOW are accepted at about 3?-level. The SMA solution is practically excluded. No sub-leading effects produced by Ue3 and admixture of sterile neutrino have been found. The fit becomes worse with an increase of Ue3 (for LMA) and a ?s admixture. Still a (30 - 50)% presence of the sterile neutrino is allowed. Solutions based on the neutrino spin-flip in the magnetic fields of the Sun as well as on non-standard neutrino interactions give a good fit of the data. If KamLAND confirms LMA MSW, the spin-flip and non-standard interactions can be considered (and will be searched for) as sub-leading effects.

Smirnov, A. Yu.

2003-04-01

216

Double Chooz: Results and Perspectives  

NASA Astrophysics Data System (ADS)

The Double Chooz experiment has been observing ? from two reactor cores at the Chooz nuclear power station in Ardennes, France, with a single 10.3 m fiducial volume Gd-doped liquid scintillator detector at a flux-weighted average baseline of ˜1050 m. This article reviews results achieved with a detector live time of 227.93 days and exposure of 33.71 GW-ton-years. A total of 8,249 candidate ? events have been observed, compared to an expected 8,937 events in the null-oscillation case: this deficit is interpreted as evidence for ? disappearance. A fit to the observed neutrino rate and spectral shape gives a best-fit value of sin2(2?13)=0.109±0.030 (stat.)±0.025 (syst.) at a mass-squared splitting of ?m312=2.32×10-3 eV. The null-oscillation hypothesis is excluded by the data at 99.8% CL (2.9?). The Double Chooz Near Detector is under construction, and analysis efforts to measure neutrino directionality, test Lorentz violation, and measure backgrounds in situ are underway.

Franke, A. J.

2013-04-01

217

First Results from SHIP Experiment  

SciTech Connect

At present, the GDT facility is being upgraded. The first stage of the upgrade is the Synthesised Hot Ion Plasmoid (SHIP) experiment. It aims, on the one hand, at the investigation of plasmas which are expected to appear in the region of high neutron production in a GDT based fusion neutron source proposed by the Budker Institute and, on the other hand, at the investigation of plasmas the parameters of which have never been achieved before in axisymmetric magnetic mirrors.The experiment is performed in a small mirror section which is installed at the end of one side of GDT. The magnetic field on axis is in the range of 0.5-2.0 Tesla and the mirror ratio is 1.2-1.4. The mirror is filled with background plasma streaming in from the central cell. This plasma component is maxwellised and has an electron temperature of about 100 eV. Two neutral beam injectors perpendicularly inject a total current of about 50 Atom Amperes of deuterium neutrals with an energy of 20 keV as a pulse with a duration of about 1 ms. Ionisation of the beams generates the high-energy ion component. The device has been equipped with several diagnostic methods which are successfully used in GDT experiments.The paper presents first results of plasma parameter measurements in SHIP experiment.

Bagryansky, P.A. (and others)

2005-01-15

218

Results from the PAMELA experiment.  

NASA Astrophysics Data System (ADS)

PAMELA is a satellite-borne experiment, aimed at precision measurements of the charged, light component of the cosmic-ray spectrum. It consists of a magnetic spectrometer, a time-of-flight system, an electromagnetic calorimeter, an anticoincidence system and a neutron detector. The main focus of the experiment is on antimatter; other components of the spectrum that can be investigated include electrons and light nuclei up to oxygen. Thanks to its placement out of the terrestrial atmosphere and the long exposure time, PAMELA is able to provide data with low systematic effects and high statistical significance. Its semi-polar orbit allows to detect particles of solar origin and to investigate the effects of the solar activity on the low-energy part of the galactic component of the spectrum (solar modulation). The redundancy of its detectors allows to monitor the detector performance and to measure the data selection efficiency directly from flight data. The instrument has been launched in 2006 and it is continuously taking data since then. The most important and recent results from the experiment will be presented.

Mori, Nicola

2014-08-01

219

Polysulfated derivatives of beta-cyclodextrin and myo-inositol as potent inhibitors of the interaction between L-selectin and peripheral addressin: implying a requirement for highly clustered sulfate groups.  

PubMed

We have utilized an in vitro assay that measures the binding of an L-selectin-human Fc chimera (LS-Fc) to [35S]sulfate labelled peripheral addressin (PNAd), a 120 kDa glycoprotein ligand for L-selectin in porcine lymph nodes, to evaluate inhibitory properties of a small group of sulfated derivatives of beta-cyclodextrin (beta-CD), sLe(x) and myo-inositol to their non-sulfated counterparts were studied. We found that hepta-sulfated beta-CD (IC50 = 0.2 mM) strongly inhibited the binding of L-selectin to PNAd. In contrast, the monosulfated beta-CD was a poor inhibitor, displaying < 10% inhibition at 0.5 mM and beta-CD was not active as an inhibitor. Similarly, inositol hexakissulfate, a compound containing six sulfate groups on the inositol ring displayed an inhibition of about 61% at 0.5 mM concentration, whereas the non-sulfated myoinositol was not inhibitory. These findings provide evidence that clustering of sulfate groups enhances affinity of molecules for binding to L-selectin. PMID:8954925

Shailubhai, K; Abbas, S Z; Jacob, G S

1996-12-13

220

An overview of FTU results  

NASA Astrophysics Data System (ADS)

Since the 2010 IAEA-FEC Conference, FTU has exploited improvements in cleaning procedures and in the density control system to complete a systematic exploration of access to high-density conditions in a wide range of plasma currents and magnetic fields. The line-averaged densities at the disruptive limit increased more than linearly with the toroidal field, while no dependence on plasma current was found; in fact, the maximum density of 4.3 × 1020 m-3 was reached at B = 8 T even at the minimum current of 0.5 MA, corresponding to twice the Greenwald limit. The lack of plasma current dependence was due to the increase in density peaking with the safety factor. Experiments with the 140 GHz electron cyclotron resonance heating (ECRH) system were focused on the sawtooth (ST) period control and on the commissioning of a new launcher with real-time steering capability that will act as the front-end actuator of a real-time system for ST period control and tearing mode stabilization. Various ECRH and electron cyclotron current-drive modulation schemes were used; with the fastest one, the ST period synchronized with an 8 ms modulation period. The observed period variations were simulated using the JETTO code with a critical shear model for the crash trigger. The new launcher was of the plug-in type, allowing quick insertion and connection to the transmission line. Both beam characteristics and steering speed were in line with design expectation. Experimental results on the connection between improved coupling of lower hybrid waves in high-density plasmas and reduced wave spectral broadening were interpreted by fully kinetic, non-linear model calculations. A dual-frequency, time-of-flight diagnostic for the measurement of density profiles was developed and successfully tested. Fishbone-like instabilities driven by energetic electrons were simulated by the hybrid MHD-gyrokinetic XHMGC code.

Buratti, P.; Alessi, E.; Amicucci, L.; Angelini, B.; Apicella, M. L.; Apruzzese, G.; Artaserse, G.; Barbato, E.; Belli, F.; Bertocchi, A.; Bin, W.; Boncagni, L.; Botrugno, A.; Briguglio, S.; Bruschi, A.; Calabrò, G.; Cardinali, A.; Castaldo, C.; Ceccuzzi, S.; Centioli, C.; Cesario, R.; Cianfarani, C.; Cirant, S.; Crisanti, F.; D'Arcangelo, O.; De Angeli, M.; De Angelis, R.; Di Matteo, L.; Di Troia, C.; Esposito, B.; Farina, D.; Figini, L.; Fogaccia, G.; Frigione, D.; Fusco, V.; Gabellieri, L.; Galperti, C.; Garavaglia, S.; Giovannozzi, E.; Granucci, G.; Grossetti, G.; Grosso, G.; Guimarães-Filho, Z. O.; Iannone, F.; Krivska, A.; Kroegler, H.; Lazzaro, E.; Lontano, M.; Maddaluno, G.; Marchetto, C.; Marinucci, M.; Marocco, D.; Mazzitelli, G.; Mazzotta, C.; Milovanov, A.; Minelli, D.; Mirizzi, F. C.; Moro, G. A.; Napoli, F.; Nowak, S.; Orsitto, F. P.; Pacella, D.; Panaccione, L.; Panella, M.; Pericoli-Ridolfini, V.; Podda, S.; Pizzuto, A.; Pucella, G.; Ramogida, G.; Ravera, G.; Romano, A.; Sozzi, C.; Tuccillo, A. A.; Tudisco, O.; Viola, B.; Vitale, V.; Vlad, G.; Zanza, V.; Zerbini, M.; Zonca, F.; Aquilini, M.; Cefali, P.; Di Ferdinando, E.; Di Giovenale, S.; Giacomi, G.; Gravanti, F.; Grosso, A.; Mellera, V.; Mezzacappa, M.; Pensa, A.; Petrolini, P.; Piergotti, V.; Raspante, B.; Rocchi, G.; Sibio, A.; Tilia, B.; Torelli, C.; Tulli, R.; Vellucci, M.; Zannetti, D.

2013-10-01

221

Pouchitis: result of microbial imbalance?  

PubMed Central

To elucidate the role of microbiological factors in pouchitis, this study investigated the composition of ileal reservoir microflora, the mucus degrading capacity of bacterial enzymes as well as the pH and the proteolytic activity of pouch effluent. Stool samples were collected from five patients with pouchitis and nine patients without pouchitis. The flora of patients with pouchitis had an increased number of aerobes, a decreased ratio anaerobes to aerobes, less bifidobacteria and anaerobic lactobacilli, more Clostridium perfringens, and several species that were not found in control patients (for example, fungi). Furthermore the pH was significantly higher in patients with pouchitis (median value 6.5) than in control patients (5.4). To find out if the pH might influence the breakdown of intestinal mucus glycoproteins, the activity of glycosidases and proteases, and the degradation of hog gastric mucin by the pouch flora was tested at pH 5.2-7.6. Some glycosidases were inhibited, others were stimulated by a low pH, however, in each sample the proteolytic activity was inhibited for 75% at pH 5.2 compared with pH 6.8 and 7.6. Degradation of hog gastric mucin by the pouch flora was an active process at pH 7.2: within two to four hours of incubation more than half of the mucin was degraded. At pH 5.2 it took twice as long. It is concluded that pouchitis possibly results from instability of the flora in the pouch, which causes homeostasis to disappear (dysbiosis), and the protection of the pouch epithelium by the mucus layer becomes affected by increased activity of bacterial and host derived enzymes.

Ruseler-van Embden, J G; Schouten, W R; van Lieshout, L M

1994-01-01

222

Mobile evaporator corrosion test results  

SciTech Connect

Laboratory corrosion tests were conducted on eight candidates to select a durable and cost-effective alloy for use in mobile evaporators to process radioactive waste solutions. Based on an extensive literature survey of corrosion data, three stainless steel alloys (304L, 316L, AL-6XN), four nickel-based alloys (825, 625, 690, G-30), and titanium were selected for testing. The corrosion tests included vapor phase, liquid junction (interface), liquid immersion, and crevice corrosion tests on plain and welded samples of candidate materials. Tests were conducted at 80{degrees}C for 45 days in two different test solutions: a nitric acid solution. to simulate evaporator conditions during the processing of the cesium ion-exchange eluant and a highly alkaline sodium hydroxide solution to simulate the composition of Tank 241-AW-101 during evaporation. All of the alloys exhibited excellent corrosion resistance in the alkaline test solution. Corrosion rates were very low and localized corrosion was not observed. Results from the nitric acid tests showed that only 316L stainless steel did not meet our performance criteria. The 316L welded interface and crevice specimens had rates of 22.2 mpy and 21.8 mpy, respectively, which exceeds the maximum corrosion rate of 20 mpy. The other welded samples had about the same corrosion resistance as the plain samples. None of the welded samples showed preferential weld or heat-affected zone (HAZ) attack. Vapor corrosion was negligible for all alloys. All of the alloys except 316L exhibited either {open_quotes}satisfactory{close_quotes} (2-20 mpy) or {open_quotes}excellent{close_quotes} (<2 mpy) corrosion resistance as defined by National Association of Corrosion Engineers. However, many of the alloys experienced intergranular corrosion in the nitric acid test solution, which could indicate a susceptibility to stress corrosion cracking (SCC) in this environment.

Rozeveld, A.; Chamberlain, D.B.

1997-05-01

223

[Results for SHEBA/FIRE  

NASA Technical Reports Server (NTRS)

The Atmospheric Research Laboratory's Radiation Measurement System (RAMS) was on the NCAR C-130 aircraft in May and July 1998, collecting radiometric data on the science flights conducted in the vicinity of the Surface Heat Budget of the Arctic Ocean (SHEBA) ship. These measurements were part of the FIRE Arctic Cloud Experiment (FIRE ACE). Analysis of some of the data focused on the absorption, reflection, and transmittance of Arctic clouds, especially compared to model results. In order to assess the absorption of solar radiation by the clear and cloudy atmosphere in the Arctic the measurements from the radiometers were combined in pairs of above-cloud segments and below-cloud segments. To get these pairs, the data for all sixteen of the flights (8 in May and 8 in July) were examined for occurrences of low-altitude segments in proximity to high-altitude segments. The low-altitude data are then treated as measurements of the bottom of a layer and the high-altitude data are taken as measurements of the top of the layer. With measurements of the upwelling and downwelling irradiances above and below a layer one can determine the reflectance, transmittance, and absorptance of the layer. Attachment: Doelling, D.R., P. Minnis, D.A. Spangenberg, V. Chakrapani, A. Mahesh, S.K. Pope, and F.P.J. Valero, Cloud radiative forcing at the top of the atmosphere during FIRE ACE derived from AVHRR data, J. Geophys. Res. 106, 15,279-15,296,2001. Minnis, P., D.R. Doelling, D.A. Spangenberg, A. Mahesh, S.K. Pope, and F.P.J. Valero, AVHRR-derived cloud radiative forcing over the ARM NSA and SHEBA site during FIRE ACE, abstract submitted to the ARM Science Team Meeting, San Antonio, TX, M a . 13-17,2000. Pope, S.K., and F.P.J. Valero, Measured and modeled radiometric fluxes in the Arctic during FIRE-ACE, presented as a poster at the American Geophysical Union meeting, San Francisco, CA, Dec. 13-17, 1999. Pope, S.K., and F.P.J. Valero, Measured and modeled radiometric fluxes in the Arctic during FIRE-ACEy paper presented at SHEBA/FIRE Workshop, National Center for Atmospheric Research, Boulder, Colo., Apr. 17-20,2000.

Valero, Francisco P. J.

2003-01-01

224

Overview of ASDEX Upgrade results  

NASA Astrophysics Data System (ADS)

The medium size divertor tokamak ASDEX Upgrade (major and minor radii 1.65 m and 0.5 m, respectively, magnetic-field strength 2.5 T) possesses flexible shaping and versatile heating and current drive systems. Recently the technical capabilities were extended by increasing the electron cyclotron resonance heating (ECRH) power, by installing 2 × 8 internal magnetic perturbation coils, and by improving the ion cyclotron range of frequency compatibility with the tungsten wall. With the perturbation coils, reliable suppression of large type-I edge localized modes (ELMs) could be demonstrated in a wide operational window, which opens up above a critical plasma pedestal density. The pellet fuelling efficiency was observed to increase which gives access to H-mode discharges with peaked density profiles at line densities clearly exceeding the empirical Greenwald limit. Owing to the increased ECRH power of 4 MW, H-mode discharges could be studied in regimes with dominant electron heating and low plasma rotation velocities, i.e. under conditions particularly relevant for ITER. The ion-pressure gradient and the neoclassical radial electric field emerge as key parameters for the transition. Using the total simultaneously available heating power of 23 MW, high performance discharges have been carried out where feed-back controlled radiative cooling in the core and the divertor allowed the divertor peak power loads to be maintained below 5 MW m-2. Under attached divertor conditions, a multi-device scaling expression for the power-decay length was obtained which is independent of major radius and decreases with magnetic field resulting in a decay length of 1 mm for ITER. At higher densities and under partially detached conditions, however, a broadening of the decay length is observed. In discharges with density ramps up to the density limit, the divertor plasma shows a complex behaviour with a localized high-density region in the inner divertor before the outer divertor detaches. Turbulent transport is studied in the core and the scrape-off layer (SOL). Discharges over a wide parameter range exhibit a close link between core momentum and density transport. Consistent with gyro-kinetic calculations, the density gradient at half plasma radius determines the momentum transport through residual stress and thus the central toroidal rotation. In the SOL a close comparison of probe data with a gyro-fluid code showed excellent agreement and points to the dominance of drift waves. Intermittent structures from ELMs and from turbulence are shown to have high ion temperatures even at large distances outside the separatrix.

Stroth, U.; Adamek, J.; Aho-Mantila, L.; Äkäslompolo, S.; Amdor, C.; Angioni, C.; Balden, M.; Bardin, S.; Barrera Orte, L.; Behler, K.; Belonohy, E.; Bergmann, A.; Bernert, M.; Bilato, R.; Birkenmeier, G.; Bobkov, V.; Boom, J.; Bottereau, C.; Bottino, A.; Braun, F.; Brezinsek, S.; Brochard, T.; Brüdgam, M.; Buhler, A.; Burckhart, A.; Casson, F. J.; Chankin, A.; Chapman, I.; Clairet, F.; Classen, I. G. J.; Coenen, J. W.; Conway, G. D.; Coster, D. P.; Curran, D.; da Silva, F.; de Marné, P.; D'Inca, R.; Douai, D.; Drube, R.; Dunne, M.; Dux, R.; Eich, T.; Eixenberger, H.; Endstrasser, N.; Engelhardt, K.; Esposito, B.; Fable, E.; Fischer, R.; Fünfgelder, H.; Fuchs, J. C.; Gál, K.; García Muñoz, M.; Geiger, B.; Giannone, L.; Görler, T.; da Graca, S.; Greuner, H.; Gruber, O.; Gude, A.; Guimarais, L.; Günter, S.; Haas, G.; Hakola, A. H.; Hangan, D.; Happel, T.; Härtl, T.; Hauff, T.; Heinemann, B.; Herrmann, A.; Hobirk, J.; Höhnle, H.; Hölzl, M.; Hopf, C.; Houben, A.; Igochine, V.; Ionita, C.; Janzer, A.; Jenko, F.; Kantor, M.; Käsemann, C.-P.; Kallenbach, A.; Kálvin, S.; Kantor, M.; Kappatou, A.; Kardaun, O.; Kasparek, W.; Kaufmann, M.; Kirk, A.; Klingshirn, H.-J.; Kocan, M.; Kocsis, G.; Konz, C.; Koslowski, R.; Krieger, K.; Kubic, M.; Kurki-Suonio, T.; Kurzan, B.; Lackner, K.; Lang, P. T.; Lauber, P.; Laux, M.; Lazaros, A.; Leipold, F.; Leuterer, F.; Lindig, S.; Lisgo, S.; Lohs, A.; Lunt, T.; Maier, H.; Makkonen, T.; Mank, K.; Manso, M.-E.; Maraschek, M.; Mayer, M.; McCarthy, P. J.; McDermott, R.; Mehlmann, F.; Meister, H.; Menchero, L.; Meo, F.; Merkel, P.; Merkel, R.; Mertens, V.; Merz, F.; Mlynek, A.; Monaco, F.; Müller, S.; Müller, H. W.; Münich, M.; Neu, G.; Neu, R.; Neuwirth, D.; Nocente, M.; Nold, B.; Noterdaeme, J.-M.; Pautasso, G.; Pereverzev, G.; Plöckl, B.; Podoba, Y.; Pompon, F.; Poli, E.; Polozhiy, K.; Potzel, S.; Püschel, M. J.; Pütterich, T.; Rathgeber, S. K.; Raupp, G.; Reich, M.; Reimold, F.; Ribeiro, T.; Riedl, R.; Rohde, V.; Rooij, G. v.; Roth, J.; Rott, M.; Ryter, F.; Salewski, M.; Santos, J.; Sauter, P.; Scarabosio, A.; Schall, G.; Schmid, K.; Schneider, P. A.; Schneider, W.; Schrittwieser, R.; Schubert, M.; Schweinzer, J.; Scott, B.; Sempf, M.; Sertoli, M.; Siccinio, M.; Sieglin, B.; Sigalov, A.; Silva, A.; Sommer, F.; Stäbler, A.; Stober, J.; Streibl, B.; Strumberger, E.; Sugiyama, K.; Suttrop, W.; Tala, T.; Tardini, G.; Teschke, M.; Tichmann, C.; Told, D.; Treutterer, W.; Tsalas, M.; Van Zeeland, M. A.; Varela, P.; Veres, G.; Vicente, J.; Vianello, N.; Vierle, T.; Viezzer, E.; Viola, B.; Vorpahl, C.; Wachowski, M.; Wagner, D.; Wauters, T.; Weller, A.; Wenninger, R.; Wieland, B.; Willensdorfer, M.; Wischmeier, M.; Wolfrum, E.; Würsching, E.; Yu, Q.; Zammuto, I.; Zasche, D.; Zehetbauer, T.; Zhang, Y.; Zilker, M.; Zohm, H.

2013-10-01

225

Recent Opportunity Microscopic Imager Results  

NASA Astrophysics Data System (ADS)

Opportunity arrived at exposures of Endeavour crater rim rocks in August 2011, on a hill dubbed 'Cape York.' These rocks have been the goal of exploration by Opportunity for the past few years because spectral evidence for phyllosilicates was observed at this location in orbital remote sensing data. As Opportunity circum¬navigated Cape York, the Microscopic Imager (MI) was used to examine the fine-scale textures of various soils and rocky outcrops. As reported previously, Opportunity discovered multiple bright linear features along the western periphery of Cape York that have been interpreted as veins of Ca sulfate deposited in fractures within the bedrock of Cape York. Opportunity then explored the northern and eastern sides of Cape York, including the area around 'Matijevic Hill' that shows evidence for phyllosilicates in CRISM data acquired from the Mars Reconnaissance Orbiter. One of the first outcrops examined near Matijevic Hill, dubbed 'Kirkwood,' is dominated by millimeter-size spherules. Unlike the hematite-rich concretions observed by Opportunity on Meridiani Planum, the aggregated 'newberries' in the Kirkwood exposure display internal structure and resistant rims. Compositionally, the spherule-rich rock is very similar to a nearby spherule-poor outcrop dubbed 'Whitewater Lake.' Thus these spherules have a more basalt-like composition compared to the hematite-rich concretions of the Burns Formation. The origin of the Kirkwood outcrop is uncertain, but the setting on the rim of the 22-km diameter Endeavour crater suggests that perhaps impact melting was involved in lapilli formation, possibly followed by mobilization and sorting in the ejecta blanket. Alternatively, the newberries may be diagenetic iron oxide concretions that are less well cemented than the 'blueberries' of the younger sulfate-rich Burns Formation. The Whitewater Lake outcrops contain the phyllosilicate phases observed from orbit, and are the oldest materials yet investigated by Opportunity. The extremely soft bedrock exposed at a Whitewater Lake outcrop target dubbed 'Azilda' is mostly fine-grained, with dispersed 2-5 mm-diameter spherules and resistant veins. This target was easily abraded by the RAT, exposing a sandstone-like texture, but the sorting of grains is difficult to determine at MI resolution. Darker, erosion-resistant veneers, similar to desert varnishes on Earth, appear to record aqueous alteration that post-dates the formation of the Ca sulfate veins; they likely contain the nontronite that is observed by CRISM in this area. The inferred neutral pH and relatively low temperature of the fluids involved in these phases of alteration would have provided a habitable environment for life if it existed on Mars at that time. Because Opportunity can no longer directly sense phyllosilicate mineralogy with the MiniTES or Mössbauer spectrometers, it is focusing on characterizing the chemistry with the APXS and texture with the MI of potential phyllosilicate host rocks. The Athena MI continues to return useful images of Mars that are being used to study the textures of rocks and soils at Endeavour crater. Exploration by Opportunity continues, with the rover approaching 'Solander Point' and more exposures of phyllosilicates detected from orbit; the latest MI results will be presented at the conference.

Herkenhoff, K. E.; Arvidson, R. E.; Jolliff, B. L.; Yingst, R.; Team, A.

2013-12-01

226

SMOS first results over land  

NASA Astrophysics Data System (ADS)

The Soil Moisture and Ocean Salinity (SMOS) mission is ESA's (European Space Agency ) second Earth Explorer Opportunity mission, launched in November 2009. It is a joint programme between ESA CNES (Centre National d'Etudes Spatiales) and CDTI (Centro para el Desarrollo Tecnologico Industrial). SMOS carries a single payload, an L-band 2D interferometric radiometer in the 1400-1427 MHz protected band. This wavelength penetrates well through the atmosphere and hence the instrument probes the Earth surface emissivity. Surface emissivity can then be related to the moisture content in the first few centimeters of soil, and, after some surface roughness and temperature corrections, to the sea surface salinity over ocean. In order to prepare the data use and dissemination, the ground segment will produce level 1 and 2 data. Level 1 consists mainly of angular brightness temperatures while level 2 consists of geophysical products. In this context, a group of institutes prepared the soil moisture and ocean salinity Algorithm Theoretical Basis documents (ATBD) to be used to produce the operational algorithm. The principle of the soil moisture retrieval algorithm is based on an iterative approach which aims at minimizing a cost function given by the sum of the squared weighted differences between measured and modelled brightness temperature (TB) data, for a variety of incidence angles. This is achieved by finding the best suited set of the parameters which drive the direct TB model, e.g. soil moisture (SM) and vegetation characteristics. Despite the simplicity of this principle, the main reason for the complexity of the algorithm is that SMOS "pixels" can correspond to rather large, inhomogeneous surface areas whose contribution to the radiometric signal is difficult to model. Moreover, the exact description of pixels, given by a weighting function which expresses the directional pattern of the SMOS interferometric radiometer, depends on the incidence angle. The goal is to retrieve soil moisture over fairly large and thus inhomogeneous areas. The retrieval is carried out at nodes of a fixed Earth surface grid. To achieve this purpose, after checking input data quality and ingesting auxiliary data, the retrieval process per se can be initiated. This cannot be done blindly as the direct model will be dependent upon surface characteristics. It is thus necessary to first assess what is the dominant land use of a node. For this, an average weighing function (MEAN_WEF) which takes into account the "antenna"pattern is run over the high resolution land use map to assess the dominant cover type. This is used to drive the decision tree which, step by step, selects the type of model to be used as per surface conditions. All this being said and done the retrieval procedure starts if all the conditions are satisfied, ideally to retrieve 3 parameters over the dominant class (the so-called rich retrieval). If the algorithm does not converge satisfactorily, a new trial is made with less floating parameters ("poorer retrieval") until either results are satisfactory or the algorithm is considered to fail. The retrieval algorithm also delivers whenever possible a dielectric constant parameter (using the-so called cardioid approach). Finally, once the retrieval converged, it is possible to compute the brightness temperature at a given fixed angle (42.5°) using the selected forward models applied to the set of parameters obtained at the end of the retrieval process. So the output product of the level 2 soil moisture algorithm should be node position, soil moisture, dielectric constants, computed brightness temperature at 42.5°, flags and quality indices. During the presentation we will describe in more details the algorithm and accompanying work in particular decision tree principle and characteristics, the auxiliary data used and the special and "exotic"cases. We will also be more explicit on the algorithm validation and verification through the data collected during the commissioning phase. The main hurdle bein

Kerr, Yann; Waldteufel, Philippe; Cabot, François; Richaume, Philippe; Jacquette, Elsa; Bitar, Ahmad Al; Mamhoodi, Ali; Delwart, Steven; Wigneron, Jean-Pierre

2010-05-01

227

An overview of KSTAR results  

NASA Astrophysics Data System (ADS)

Since the first H-mode discharges in 2010, the duration of the H-mode state has been extended and a significantly wider operational window of plasma parameters has been attained. Using a second neutral beam (NB) source and improved tuning of equilibrium configuration with real-time plasma control, a stored energy of Wtot ˜ 450 kJ has been achieved with a corresponding energy confinement time of ?E ˜ 163 ms. Recent discharges, produced in the fall of 2012, have reached plasma ?N up to 2.9 and surpassed the n = 1 ideal no-wall stability limit computed for H-mode pressure profiles, which is one of the key threshold parameters defining advanced tokamak operation. Typical H-mode discharges were operated with a plasma current of 600 kA at a toroidal magnetic field BT = 2 T. L-H transitions were obtained with 0.8-3.0 MW of NB injection power in both single- and double-null configurations, with H-mode durations up to ˜15 s at 600 kA of plasma current. The measured power threshold as a function of line-averaged density showed a roll-over with a minimum value of ˜0.8 MW at \\bar{n}_e\\sim 2\\times 10^{19}\\,m^{-3} . Several edge-localized mode (ELM) control techniques during H-mode were examined with successful results including resonant magnetic perturbation, supersonic molecular beam injection (SMBI), vertical jogging and electron cyclotron current drive injection into the pedestal region. We observed various ELM responses, i.e. suppression or mitigation, depending on the relative phase of in-vessel control coil currents. In particular, with the 90° phase of the n = 1 RMP as the most resonant configuration, a complete suppression of type-I ELMs was demonstrated. In addition, fast vertical jogging of the plasma column was also observed to be effective in ELM pace-making. SMBI-mitigated ELMs, a state of mitigated ELMs, were sustained for a few tens of ELM periods. A simple cellular automata (‘sand-pile’) model predicted that shallow deposition near the pedestal foot induced small-sized high-frequency ELMs, leading to the mitigation of large ELMs. In addition to the ELM control experiments, various physics topics were explored focusing on ITER-relevant physics issues such as the alteration of toroidal rotation caused by both electron cyclotron resonance heating (ECRH) and externally applied 3D fields, and the observed rotation drop by ECRH in NB-heated plasmas was investigated in terms of either a reversal of the turbulence-driven residual stress due to the transition of ion temperature gradient to trapped electron mode turbulence or neoclassical toroidal viscosity (NTV) torque by the internal kink mode. The suppression of runaway electrons using massive gas injection of deuterium showed that runaway electrons were avoided only below 3 T in KSTAR. Operation in 2013 is expected to routinely exceed the n = 1 ideal MHD no-wall stability boundary in the long-pulse H-mode (?10 s) by applying real-time shaping control, enabling n = 1 resistive wall mode active control studies. In addition, intensive works for ELM mitigation, ELM dynamics, toroidal rotation changes by both ECRH and NTV variations, have begun in the present campaign, and will be investigated in more detail with profile measurements of different physical quantities by techniques such as electron cyclotron emission imaging, charge exchange spectroscopy, Thomson scattering and beam emission spectroscopy diagnostics.

Kwak, Jong-Gu; Oh, Y. K.; Yang, H. L.; Park, K. R.; Kim, Y. S.; Kim, W. C.; Kim, J. Y.; Lee, S. G.; Na, H. K.; Kwon, M.; Lee, G. S.; Ahn, H. S.; Ahn, J.-W.; Bae, Y. S.; Bak, J. G.; Bang, E. N.; Chang, C. S.; Chang, D. H.; Chen, Z. Y.; Cho, K. W.; Cho, M. H.; Choi, M.; Choe, W.; Choi, J. H.; Chu, Y.; Chung, K. S.; Diamond, P.; Delpech, L.; Do, H. J.; Eidietis, N.; England, A. C.; Ellis, R.; Evans, T.; Choe, G.; Grisham, L.; Gorelov, Y.; Hahn, H. S.; Hahn, S. H.; Han, W. S.; Hatae, T.; Hillis, D.; Hoang, T.; Hong, J. S.; Hong, S. H.; Hong, S. R.; Hosea, J.; Humphreys, D.; Hwang, Y. S.; Hyatt, A.; Ida, K.; In, Y. K.; Ide, S.; Jang, Y. B.; Jeon, Y. M.; Jeong, J. I.; Jeong, N. Y.; Jeong, S. H.; Jin, J. K.; Joung, M.; Ju, J.; Kawahata, K.; Kim, C. H.; Kim, Hee-Su; Kim, H. S.; Kim, H. J.; Kim, H. K.; Kim, H. T.; Kim, J. H.; Kim, J.; Kim, J. C.; Kim, Jong-Su; Kim, Jung-Su; Kim, J. H.; Kim, Kyung-Min; Kim, K. J.; Kim, K. P.; Kim, M. K.; Kim, S. T.; Kim, S. W.; Kim, Y. J.; Kim, Y. K.; Kim, Y. O.; Ko, J. S.; Ko, W. H.; Kogi, Y.; Kolemen, E.; Kong, J. D.; Kwak, S. W.; Kwon, J. M.; Kwon, O. J.; Lee, D. G.; Lee, D. R.; Lee, D. S.; Lee, H. J.; Lee, J.; Lee, J. H.; Lee, K. D.; Lee, K. S.; Lee, S. H.; Lee, S. I.; Lee, S. M.; Lee, T. G.; Lee, W.; Lee, W. L.; Lim, D. S.; Litaudon, X.; Lohr, J.; Mueller, D.; Moon, K. M.; Na, D. H.; Na, Y. S.; Nam, Y. U.; Namkung, W.; Narihara, K.; Oh, S. T.; Oh, D. G.; Ono, T.; Park, B. H.; Park, D. S.; Park, G. Y.; Park, H.; Park, H. T.; Park, J. K.; Park, J. S.; Park, M. K.; Park, S. H.; Park, S.; Park, Y. M.; Park, Y. S.; Parker, R.; Rhee, D. R.; Sabbagh, S. A.; Sakamoto, K.; Shiraiwa, S.; Seo, D. C.; Seo, S. H.; Seol, J. C.; Shi, Y. J.; Son, S. H.; Song, N. H.; Suzuki, T.; Terzolo, L.; Walker, M.; Wallace, G.; Watanabe, K.; Wang, S. J.; Woo, H. J.; Woo, I. S.; Yagi, M.; Yu, Y. W.; Yamada, I.; Yonekawa, Y.; Yoo, C. M.; You, K. I.; Yoo, J. W.; Yun, G. S.; Yu, M. G.; Yoon, S. W.; Xiao, W.; Zoletnik, S.; the KSTAR Team

2013-10-01

228

Interactions between dietary fat type and enzyme supplementation in broiler diets with high pentosan contents: effects on precaecal and total tract digestibility of fatty acids, metabolizability of gross energy, digesta viscosity and weights of small intestine  

Microsoft Academic Search

One hundred grams fat, based on blends of beef tallow and soya oil (0:100, 20:80, 40:60, 60:40, 80:20 and 100:0) which corresponded to dietary ratios of unsaturated to saturated fatty acids (U:S ratio) of 5.47, 3.23, 2.11, 1.45, 1.00 and 0.69, respectively, was incorporated into a rye-based broiler diet (610gkg?1). All diets were tested without or with supplementation of a

S Dänicke; H Jeroch; W Böttcher; O Simon

2000-01-01

229

Sugar cane bagasse as a possible source of fermentable carbohydrates. I. Characterization of bagasse with regard to monosaccharide, hemicellulose, and amino acid composition  

SciTech Connect

Hemicellulose fractions of plant materials have recently attracted attention as a possible source of fermentable sugars to be used via fermentation for the production of liquid fuels, mainly ethanol. Individual monosaccharides present in bagasse hemicellulose were determined using HPLC and other chromatographic procedures. The presence of higher oligomers of the monosaccharides could also be determined. The pentosan fraction of bagasse was successfully hydrolyzed and extracted with 5% (m/v) HCl, and the rate of release of individual monosaccharides was determined. Xylose was the main component in the hydrolyzates, while glucose, arabinose, and galactose present in the side chains of the pentosans were initially released at a fast rate. This treatment resulted in obtaining 229 mg/g xylose (85% of theoretical maximum) and 44 mg/g glucose from bagasse. Only arabinose (2.8 mg/g) and galactose (0.75 mg/g) was also present in detectable quantities. A total of 309 mg monosaccharides were obtained from 1 g of bagasse by this treatment. The results indicated that hydrolysis conditions for specific plant materials depend on the composition of the specific material being utilized. A part of the pentosan fraction (77.1%) was hydrolyzed at a high rate, while 22.9% was more stable and hydrolyzed more slowly. Although 39.8% dry bagasse could be obtained in solution by treatment with dilute alkali, only about 72% of the available hemicelluloses could be extracted in this way if the bagasse was not delignified beforehand. Amino acids and peptides or proteins were also extracted to very much the same extent with the alkali.

du Toit, P.J.; Olivier, S.P.; van Biljon, P.L.

1984-01-01

230

Results of Work in Combating Hail Damage.  

National Technical Information Service (NTIS)

Contents: Results of antihail operations using the artillery method in the Northern Caucasus (KPEVGI); Results of antihail operations carried out by the rocket method in the Georgian SSR (SBG, IGAN); Results of antihail operations by the ZakNIGMI method.

A. D. Dzhuraev I. I. Burtsev I. I. Gaivoronoskii I. T. Bartishvili I. V. Benito

1974-01-01

231

MedlinePlus Survey Results 2012  

MedlinePLUS

... Topics Drugs & Supplements Videos & Cool Tools ESPAÑOL MedlinePlus Survey Results 2012 To use the sharing features on this page, please enable JavaScript. These survey results describe MedlinePlus and MedlinePlus en español users. ...

232

Recent radiation test results at JPL  

Microsoft Academic Search

This paper documents recent TID (including ELDRS) and proton damage test results obtained by JPL. Unusual test results, such as abnormally low or high failure levels or unusual failure or response mechanisms, are emphasized.

Bruce E. Pritchard; Bernard G. Rax; Steven S. McClure

2003-01-01

233

Electroweak and QCD results from D0  

SciTech Connect

We present some of the results in the areas of QCD and Electroweak physics for Run II of the D0 experiment at the Fermilab Tevatron. QCD results include dijet angular decorrelations and inclusive jet and dijet cross sections. Electroweak results include the decay of Z bosons to tau pairs and several results on gauge boson pairs. No deviations from the Standard Model have been observed.

Eads, Michael; /Northern Illinois U.

2005-06-01

234

Overview of Recent HiRes Results  

NASA Astrophysics Data System (ADS)

We present an overview of the most recent results from the High-Resolution Fly's Eye (HiRes) observatory. These include both monocular and stereo energy spectra, the results of a search for correlations between event arrival directions and active galactic nuclei, and new results on composition studies using airshower maximum.

Belz, J.; HiRes Collaboration

235

Interpreting Results in Mental Health Research  

Microsoft Academic Search

It is often difficult to interpret the clinical or policy significance of findings from mental health research when results are presented only in terms of statistical significance. Results expressed in terms of p values or as a metric corresponding to a mental health status scale are seldom intuitively meaningful. To help interpret the significance of research results, we demonstrate a

Jeffrey S. Harman; Willard G. Manning; Nicole Lurie; Chuan-Fen Liu

2001-01-01

236

A method to assess search engine results  

Microsoft Academic Search

Purpose – The aim of this paper is to develop a methodology for assessing search results retrieved from different sources. Design\\/methodology\\/approach – This is a two phase method, where in the first stage users select and rank the ten best search results from a randomly ordered set. In the second stage they are asked to choose the best pre-ranked result

Judit Bar-Ilan; Mark Levene

2011-01-01

237

California Assessment Program: 1986-87 Results.  

ERIC Educational Resources Information Center

This bulletin is intended to provide a brief summary of the California Assessment Program (CAP) testing results for the 1986-87 school year. General comments regarding testing in San Diego (California), commonly asked questions, and school- and district-level results are provided. Tabulated results cover mean scale scores for grades 3, 6, and 8…

San Diego City Schools, CA. Evaluation Services Dept.

238

Disclosing Individual Genetic Results to Research Participants  

Microsoft Academic Search

Investigators and institutional review boards should integrate plans about the appropriate disclosure of individual genetic results when designing research studies. The ethical principles of beneficence, respect, reciprocity, and justice provide justification for routinely offering certain results to research participants. We propose a result-evaluation approach that assesses the expected information and the context of the study in order to decide whether

Vardit Ravitsky; Benjamin S. Wilfond

2006-01-01

239

Finding resultant vectors using a rubber band  

NASA Astrophysics Data System (ADS)

Most students have difficulty finding a resultant vector of graphical vector addition and subtraction. We offer here an alternative and simple way of finding a result of vector addition; using a rubber band, the magnitude and direction of a resultant vector can be shown immediately.

Wutchana, U.; Emarat, N.

2014-03-01

240

Applying DSM evaluation results to utility planning  

SciTech Connect

This paper describes the results of a study to assess the application of DSM evaluation results to utility forecasting and planning. The paper has three objectives: (1) identify forecasting and planning applications of evaluation studies, (2) identify major obstacles and problems associated with applying evaluation results to forecasting and planning, and (3) suggest approaches to address the major problems. The paper summarizes results from interviews with utilities, regulators, and consultants to determine how the utility industry currently applies evaluation results in forecasting and planning. The paper also includes results from a detailed case study of Sacramento Municipal Utility District (SMUD) and Southern California Edison Company (SCE), two utilities with large DSM programs and active evaluation efforts.

Baxter, L.W.

1995-07-01

241

Peer effects in learning HIV results?  

PubMed Central

How do neighbors positively or negatively influence individuals living in rural Malawi to learn their HIV results? Using data of location of homes and distance to neighbors, we measure the social network effects of neighbors’ learning their HIV results on individuals own learning. Using the fact that neighbors were randomly offered monetary incentives of varying amounts to learn their HIV results, we find positive effects of neighbors attending clinics on others living nearby: a 10 percentage point increase of the percentage of neighbors (approximately 2.4 individuals) learning their HIV results increases the probability of learning HIV results by 1.1 percentage points. The strongest network effects are among closest neighbors; we find no effect among religious social networks. We also find a negative interaction between direct cash incentives and peers: the effect of peers doubles among those who were not offered any individual financial incentive to learn their HIV results.

Godlonton, Susan; Thornton, Rebecca

2011-01-01

242

Heavy ion test results on memories  

Microsoft Academic Search

A synthesis is presented of heavy ion single event upset and latch-up sensitivity test results on 12 memory types from various technologies. Test data for CMOS and SOI SRAMs, FG\\/EEPROMs and SNOS\\/EEPROMs are presented. After a presentation of the test conditions, the interpretation of the results for high density technologies are discussed. The test results are then summarized and discussed

R. Ecoffet; M. Labrunee; S. Duzellier; D. Falguere

1992-01-01

243

Status and latest results from MIPP  

NASA Astrophysics Data System (ADS)

We briefly review the need for high quality hadron production data. The Main Injector Particle Production experiment (MIPP) at Fermilab collected data in 2005/2006 and published final results on forward neutron production and the charged kaon mass. Preliminary results on other topice, including particle production on the NuMI target, have also been presented. We provide a summary of past results and an outlook.

Meyer, Holger

2012-12-01

244

New results on flavor production at PEP  

SciTech Connect

This report includes results from five PEP detectors: DELCO, HRS, MAC, MARK II and TPC. All, except the TPC, are presently taking data at PEP. The TPC is being upgraded: a new superconducting coil is being installed and other improvements are being implemented. The results discussed here are either new or improved since the Cornell Conference. New results on Particle Searches and a limit on neutrino generations are discussed. New data are included on weak couplings of c and b quarks. Various new results on hadron production are reported. All data were obtained in e/sup + -/ collisions with total energy ..sqrt..s=29 GeV. 54 references.

Barbaro-Galtieri, A.

1984-05-01

245

[Guidelines for results reports of biological examinations].  

PubMed

This article presents recommendations for results reports after release by authorized person to fulfill the French regulation and ISO 15189 requirements. This document points out who can be authorized to communicate the reports and to whom. The advantages and disadvantages of the different ways to use for results report are discussed, as traceability and confidentiality rules to apply. Particular situations as critical values to report and correction of transmitted erroneous results. A table summarizes the different modalities available to communicate the results of examinations performed by the laboratory. PMID:22736697

Boutten, A; Perrin, A; Maurellet-Evrard, S; Felden, F; Suiro, A; Vassault, A

2012-02-01

246

Chemical properties of two-year-old deciduous species  

SciTech Connect

Contents of ash, hot-water extractives, 1% sodium hydroxide extractives, alcohol-benzene extractive, lignin, holocellulose, alpha-cellulose, and pentosan were determined on two-year-old, short-rotation trees of autumn olive, black alder, black locust, eastern cottonwood, royal paulownia, silver maple, and sycamore. These plantations were established in 1978 on marginal agricultural land that was not suitable for food production in Illinois. Six comparable species of commercial lumber were also analyzed. Test results indicated that all chemical properties did vary with species, above-ground tree portions, and ages of species. The two-year-old juvenile trees had higher average extractives, holocellulose, pentosan, and ash content than did the lumber of matured wood. Black locust possessed the highest values of holocellulose and alpha-cellulose, while the eastern cottonwood had the highest extractive contents. Silver maple had the highest lignin content. Both bark and branches which consisted of about 32% of the mass weight of young trees, had a higher average lignin, extractive and ash content than those of the stemwood. Based on chemical composition, these seven juvenile deciduous species could serve as a raw material for the paper and chemical industries, as well as for energy. 19 references, 8 figures, 6 tables.

Chow, P.; Rolfe, G.L.; Lee, C.S.; White, T.A.

1983-01-01

247

Exploiting Ontologies for Search Result Diversification.  

National Technical Information Service (NTIS)

We report our systems and experimental results in the diversity task of web track 2012. Our goal is to exploit the structured data, i.e., the ontologies, as well as unstructured data for search result diversification. We use two strategies in the diversif...

H. Fang W. Zheng

2012-01-01

248

Getting to Results. Closing the Achievement Gap  

ERIC Educational Resources Information Center

The "Closing the Achievement Gap" series explores the Casey Foundation's education investments and presents stories, results, and lessons learned. This publication describes efforts to develop a flexible but rigorous results measurements system that enables the Foundation and its grantees to reflect on practice and course-correct as needed to…

Read, Tory

2008-01-01

249

Students' Homework and TIMSS 2003 Mathematics Results  

ERIC Educational Resources Information Center

An aspect of the complex relationship between students homework and academic achievement (Cooper, Robinson, and Patall, 2006) was examined by correlating TIMSS 2003 mathematics results with the data about homework in 46 countries of the TIMSS study. The TIMSS results had no statistically significant correlation with the teachers' emphasis on…

Mikk, Jaan

2006-01-01

250

High altitude photography - Aspects and results  

Microsoft Academic Search

The paper outlines the particularities of jet photography and determines the potential for map production with modern instruments on the basis of the results obtained from test field photographs. General aspects of high-altitude photography are examined relative to photographic aircraft used, installation of the camera systems, and high-altitude photographic problems. Results are discussed in terms of geometric accuracy, image quality,

D. Gut; J. Hoehle

1977-01-01

251

Improving personalized web search using result diversification  

Microsoft Academic Search

We present and evaluate methods for diversifying search re- sults to improve personalized web search. A common per- sonalization approach involves reranking the top N search results such that documents likely to be preferred by the user are presented higher. The usefulness of reranking is limited in part by the number and diversity of results considered. We propose three methods

Filip Radlinski; Susan T. Dumais

2006-01-01

252

Results from a web impact factor crawler  

Microsoft Academic Search

Web impact factors, the proposed web equivalent of impact factors for journals, can be calculated by using search engines. It has been found that the results are problematic because of the variable coverage of search engines as well as their ability to give significantly different results over short periods of time. The fundamental problem is that although some search engines

Mike Thelwall

2001-01-01

253

The CASE results: implications for science teaching  

Microsoft Academic Search

This paper considers the implications of the Cognitive Acceleration through Science Education (case) project results for science teaching methods. Results are summarized briefly and then the peculiar features of the case methodology and subject?matter are described and consideration given to how they could be incorporated into any science curriculum. In particular, the use of cognitive conflict, metacognition, and bridging are

Philip Adey

1992-01-01

254

Sequential Circuit Test Generator (STG) benchmark results  

Microsoft Academic Search

The authors report on the results of running a version of the Sequential Circuit Test Generator (STG3) on the ISCAS-89 sequential circuit benchmarks. First, they present a brief history of STG and briefly describe the algorithms used. They then describe the conditions under which the experiments were run and give the benchmark results. No particular problems were encountered when running

W.-T. Cheng; S. Davidson

1989-01-01

255

Forward Physics Results from ATLAS and CMS  

NASA Astrophysics Data System (ADS)

We present recent forward and diffractive physics results from ATLAS and CMS experiments. Mainly, the physics results on diffraction, underlying event at forward rapidity and forward jets measurements are discussed. Also, using the combined CMS and TOTEM detectors, we show the first event candidate for central jets production with two leading protons detected in the TOTEM Roman Pot stations.

Sen, Sercan

2013-12-01

256

Washington Assessment Professional Development Program Evaluation Results.  

ERIC Educational Resources Information Center

This is a compilation of the Executive Summaries from several documents: "Professional Development District Team Survey Results" (July 1997), "CSL Assessment Training Survey Results" (January 1999), "CSL Assessment Professional Development Evaluation Additional Data Analysis of District Surveys" (February 1999); "1998-99 CSL Assessment Site Visit…

Arter, Judith A.

257

Pluto results on jets and QCD  

SciTech Connect

Results obtained with the PLUTO detector at PETRA are presented. Multihadron final states have been analysed with respect to clustering, energy-energy correlations and transverse momenta in jets. QCD predictions for hard gluon emission and soft gluon-quark cascades are discussed. Results on ..cap alpha../sub s/ and the gluon spin are given.

Pluto collaboration

1981-02-01

258

Results of the CAMS project in 2012  

NASA Astrophysics Data System (ADS)

In early 2012 four Stations equipped with CAMS started a network in the Netherlands. In this article we present the results of the first year of the new CAMS network. Weather was rather uncooperative during most major streams but in spite of this impressive results were obtained. Two new stations were included in the network during 2012.

Johannink, Carl

2013-12-01

259

Two theoretical results for sequential semidefinite programming  

Microsoft Academic Search

We examine the local convergence of a sequential semidefinite programming ap- proach for solving nonlinear programs with nonlinear semidefiniteness constraints. Known convergence results are extended to slightly weaker second order sucient conditions and the resulting subproblems are shown to have local convexity properties that imply a weak form of self-concordance of the barrier subproblems.

Rodrigo Garces; Walter Gomez Bofill; Florian Jarre

260

Selected results in lattice quantum chromodynamics  

NASA Astrophysics Data System (ADS)

The results of the Budapest-Marseille-Wuppertal Collaboration are summarized. Both T = 0 and T > 0 findings are presented. Special emphasis is put on the "physical point" (which is used to describe results with physical quark masses extrapolated all the way to the continuum limit). At T = 0, the light hadron spectrum, FK/F?, the quark masses, and the kaon bag parameter are discussed. At T > 0, results for the nature of the quantum chromodynamics transition, the transition temperature, the equation of state (both at vanishing and nonvanishing chemical potentials), the curvature of the phase diagram, and the effects of magnetic fields are discussed. All these results are full results (representing findings at physical quark masses in the continuum limit).

Fodor, Z.

2012-11-01

261

DOE-2 Verification Project: Phase I results  

SciTech Connect

A computer program, designated DOE-2 (formerly DOE-1), has been developed to provide architect/engineers with a public domain tool for fast and economic energy analysis of buildings. Los Alamos Scientific Lab. has developed and implemented a program plan to verify DOE-2. Phase I of this plan is an analytical verification of the DOE-2 program as a computational unit rather than as separate algorithms. Work on Phase I of the DOE-2 Verification Project is nearly complete. Results of the crosscheck with ASHRAE loads calculative procedures, as well as the results of a line-by-line check of program constants and flag-setting algorithms, are reported. Also presented are results of empirical tests of the full DOE-2 program, including comparisons with measured energy consumption, and preliminary results of a study of the user interpretation of input data on predicted results.

Diamond, S.C.; Hunn, B.D.

1980-01-01

262

Reconciling the CAST and PVLAS results.  

PubMed

The PVLAS experiment has recently claimed evidence for an axionlike particle in the milli-electron-volt mass range with a coupling to two photons that appears to be in contradiction with the negative results of the CAST experiment searching for solar axions. The simple axion interpretation of these two experimental results is therefore untenable and it has posed a challenge for theory. We propose a possible way to reconcile these two results by postulating the existence of an ultralight pseudoscalar particle interacting with two photons and a scalar boson and the existence of a low scale phase transition in the theory. PMID:17358829

Mohapatra, R N; Nasri, Salah

2007-02-01

263

Comparative results of 327 chemical carcinogenicity studies.  

PubMed Central

The National Cancer Institute (NCI) and the National Toxicology Program (NTP) have carried out a number of laboratory animal carcinogenicity studies and presented the results of these experiments in a series of Technical Reports. This paper tabulates the results of the 327 NCI/NTP studies carried out to date on 308 distinct chemicals, and discusses certain issues relevant to the evaluation of carcinogenicity in these experiments. This compilation of results from NCI/NTP carcinogenicity experiments provides a large database that can be used to study structure-activity correlations, interspecies concordance, and associations between laboratory animal carcinogenicity and other toxicological effects.

Haseman, J K; Huff, J E; Zeiger, E; McConnell, E E

1987-01-01

264

Unfavourable results with distraction in craniofacial skeleton  

PubMed Central

Distraction osteogenesis has revolutionised the management of craniofacial abnormalities. The technique however requires precise planning, patient selection, execution and follow-up to achieve consistent and positive results and to avoid unfavourable results. The unfavourable results with craniofacial distraction stem from many factors ranging from improper patient selection, planning and use of inappropriate distraction device and vector. The present study analyses the current standards and techniques of distraction and details in depth the various errors and complications that may occur due to this technique. The commonly observed complications of distraction have been detailed along with measures and suggestions to avoid them in clinical practice.

Agarwal, Rajiv

2013-01-01

265

New results on the tau lepton  

SciTech Connect

This is a review of new results on the tau lepton. The results include precise measurements of the lifetime, measurements of the decay tau/sup -/ ..-->.. ..pi../sup -/2..pi../sup 0/nu/sub tau/ with much improved precision, and limits on decay modes containing eta mesons, including the second-class-current decay tau/sup -/ ..-->.. ..pi../sup -/eta nu/sub tau/. The implications of these new results on the discrepancy in the one-charged-particle decay modes are discussed. 52 refs., 6 figs., 2 tabs.

Gan, K.K.

1987-11-01

266

Experimental rotordynamic coefficient results for honeycomb seals  

NASA Technical Reports Server (NTRS)

Test results (leakage and rotordynamic coefficients) are presented for seven honeycomb-stator smooth-rotor seals. Tests were carried out with air at rotor speeds up to 16,000 cpm and supply pressures up to 8.2 bars. Test results for the seven seals are compared, and the most stable configuration is identified based on the whirl frequency ratio. Results from tests of a smooth-rotor/smooth-stator seal, a teeth-on-stator labyrinth seal, and the most stable honeycomb seal are compared.

Elrod, David A.; Childs, Dara W.

1988-01-01

267

Unfavourable results in skull base surgery  

PubMed Central

Treatment of skull base tumors involves multiple specialities. The lesions are usually advanced and the treatment is often associated with unfavorable results, which may be functional and/or aesthetic. Here we have done an analysis for the complications and unfavorable results of 546 cases treated surgically by a single craniofacial surgeon over a period of 14 years. The major morbidity ranges from death to permanent impairment of vital organ functions (brain, eye, nose), infections, tissue losses, flap failures, treatment associated complications, psychosocial issues, and aesthesis besides others. This article is aimed at bringing forth these unfavorable results and how to avoid them.

Jaju, Hemen

2013-01-01

268

Pairwise Multiple Comparisons: New Yardstick, New Results.  

ERIC Educational Resources Information Center

Monte Carlo study results show that recently proposed multiple comparison procedures (MCPs) that are not intended to control the familywise error rate had consistently larger true model rates than did familywise error controlling MCPs. (SLD)

Cribbie, Robert A.

2003-01-01

269

TRU Waste Certification: Experimental Data and Results.  

National Technical Information Service (NTIS)

As part of the TRU waste certification program at Mound, experiments were performed, and the results were used to verify certification of various TRU wastes with regard to specific WIPP (Waste Isolation Pilot Plant) criteria. Particle-size determinations ...

E. L. Lewis

1983-01-01

270

CTEPP NC DATA QA/QC RESULTS  

EPA Science Inventory

This data set contains the method performance results. This includes field blanks, method blanks, duplicate samples, analytical duplicates, matrix spikes, and surrogate recovery standards. The Children?s Total Exposure to Persistent Pesticides and Other Persistent Pollutant (...

271

SARDA HITL Simulations: System Performance Results  

NASA Technical Reports Server (NTRS)

This presentation gives an overview of the 2012 SARDA human-in-the-loop simulation, and presents a summary of system performance results from the simulation, including delay, throughput and fuel consumption

Gupta, Gautam

2012-01-01

272

Summary of TMX results: executive summary  

SciTech Connect

This report summarizes results from the successful experimental operation of the Tandem Mirror Experiment (TMX) over the period October 1978 through September 1980. The experimental program, summarized by the DOE milestones given in Table 1, had three basic phases: (1) an 8-month checkout period, October 1978 through May 1979; (2) a 6-month initial period of operation, June through November 1979, during which the basic principles of the tandem configuration were demonstrated (i.e., plasma confinement was improved over that of a single-cell mirror); and (3) a 10-month period, December 1979 through September 1980, during which the initial TMX results were corroborated by additional diagnostic measurements and many detailed physics investigations were carried out. This report summarizes the early results, presents results of recent data analysis, and outlines areas of ongoing research.

Simonen, T.C. (ed.)

1981-02-26

273

Overview of the recent results from CLAS  

NASA Astrophysics Data System (ADS)

An overview of the recent results obtained at the Thomas Jefferson Laboratory on the study of the nucleon internal structure is presented, with main focus on the CLAS measurements of the Transverse Momentum Dependent partonic functions.

Mirazita, Marco

2012-03-01

274

PAVAD B Design and Experimental Results Report.  

National Technical Information Service (NTIS)

The application and experimental results are presented for the Passive and Advanced Vibro-Acoustic Treatments Demonstration, Part B (PAVAD-B) conducted at the Laboratory for Structural Acoustics, Naval Research Laboratory (NRL) during the winter and sprin...

C. Herdic B. H. Houston R. D. Corsaro

2006-01-01

275

Unemployment Insurance Customer Satisfaction: National Survey Results.  

National Technical Information Service (NTIS)

This report presents information from a national survey of individuals who filed claims for unemployment compensation in 1996 and 1997. The study examines their satisfaction with the Unemployment Insurance system's services, procedures and staff. Results ...

J. W. Frees S. S. Marcus

1999-01-01

276

Recent Results from the Nova Experiments Program.  

National Technical Information Service (NTIS)

Recent experimental results are reviewed, using the Nova laser. The experiments primarily address the physics of indirect-drive ICF. These experiments include investigating high-Z plasmas and radiation production, hydrodynamic stability, and high converge...

R. L. Kauffman M. D. Cable E. M. Campbell S. G. Glendinning C. W. Hatcher

1988-01-01

277

Recent QCD results from the Tevatron  

SciTech Connect

Recent QCD results from the CDF and D0 detectors at the Tevatron proton-antiproton collider are presented. An outlook for future QCD tests at the Tevatron collider is also breifly discussed. 27 refs., 11 figs.

Pickarz, Henryk [Florida State University, Tallahassee (United States); CDF and DO collaboration

1997-02-01

278

Heavy quark results at D0  

SciTech Connect

Recent results in heavy quark physics from the D0 experiment at the Fermilab Tevatron Collider are reported. Topics included are top quark production and mass determination, bottom production and correlations, and charmonium production. 20 refs., 10 figs., 2 tabs.

Fein, D.K. [Arizona Univ., Tucson, AZ (United States). Dept. of Physics; D0 Collaboration

1997-01-01

279

Viscous Transonic Airfoil Workshop compendium of results  

NASA Technical Reports Server (NTRS)

Results from the Viscous Transonic Airfoil Workshop held at the AIAA 25th Aerospace Sciences Meeting at Reno, NV in January 1987, are compared with each other and with experimental data. Test cases used in this workshop include attached and separated transonic flows for three different airfoils: the NACA 0012 airfoil, the RAE 2822 airfoil, and the Jones airfoil. A total of 23 sets of numerical results from 15 different author groups are included. The numerical methods used vary widely and include: 16 Navier-Stokes methods, 2 Euler/boundary-layer methods, and 5 full-potential/boundary-layer methods. The results indicate a high degree of sophistication among the numerical methods with generally good agreement between the various computed and experimental results for attached or moderately-separated cases. The agreement for cases with larger separation is only fair and suggests additional work is required in this area.

Holst, Terry L.

1987-01-01

280

Results of coronal hole research: An overview  

NASA Technical Reports Server (NTRS)

An overview of the last 10 years of coronal hole research, in particular since 1970, is presented. The findings of the early investigations and the more recent results obtained with Skylab/Apollo Telescope Mount instrumentation are discussed.

Wilson, R. M.

1976-01-01

281

Random walk through recent CDF QCD results  

SciTech Connect

We present recent results on jet fragmentation, jet evolution in jet and minimum bias events, and underlying event studies. The results presented in this talk address significant questions relevant to QCD and, in particular, to jet studies. One topic discussed is jet fragmentation and the possibility of describing it down to very small momentum scales in terms of pQCD. Another topic is the studies of underlying event energy originating from fragmentation of partons not associated with the hard scattering.

C. Mesropian

2003-04-09

282

Quality circles: Organizational adaptations, improvements and results  

NASA Technical Reports Server (NTRS)

The effective application in industry and government of quality circles work was demonstrated. The results achieved in quality and productivity improvements and cost savings are impressive. The circle process should be institutionalized within industry and government. The stages of circle program growth, innovations that help achieve circle process institutionalization, and the result achieved at Martin Marietta's Michoud Division and within the National Aeronautics and Space Administration (NASA) are addressed.

Tortorich, R.

1985-01-01

283

Physics results from the Large Hadron Collider  

NASA Astrophysics Data System (ADS)

A brief review of the physics results of 2011 from experiments at the Large Hadron Collider is presented, first of all, the results of the search for the Standard-Model Higgs boson. Measurements of W- and Z-bosons, t- quark and the search for rare B-meson decays are in a good agreement with the Standard Model predictions in next-to-next-to-leading order (NNLO).

Smirnova, L. N.

2014-01-01

284

NASA JSC neural network survey results  

NASA Technical Reports Server (NTRS)

A survey of Artificial Neural Systems in support of NASA's (Johnson Space Center) Automatic Perception for Mission Planning and Flight Control Research Program was conducted. Several of the world's leading researchers contributed papers containing their most recent results on artificial neural systems. These papers were broken into categories and descriptive accounts of the results make up a large part of this report. Also included is material on sources of information on artificial neural systems such as books, technical reports, software tools, etc.

Greenwood, Dan

1987-01-01

285

First results from the ALICE experiment  

SciTech Connect

The results from first series of measurements performed by the ALICE experiment at the LHC are presented. These measurements include the charged-particle pseudorapidity densities, multiplicity distributions and transverse momentum spectra obtained by analyzing the data collected in 2009 and 2010 in proton-proton collisions at three different center-of-mass energies of 0.9, 2.36, and 7 TeV. The results are compared to previous proton-antiproton data and to model predictions.

Belikov, I., E-mail: iouri.belikov@in2p3.fr [Universite de Strasbourg, CNRS-IN2P3, IPHC (France)

2012-05-15

286

New results in optical fiber Cherenkov calorimetry  

NASA Astrophysics Data System (ADS)

Quartz fiber calorimetry is a sampling calorimetry technique based on the detection of Cherenkov light generated in quartz optical fibers. Optical fibers transport only selected modes of light which results in very narrow visible showers. In addition, this technique is characterized by radiation resistance measured in gigarads and nanosecond pulse duration. The results of recent beam tests are presented, illustrating behavior of electromagnetic calorimeters based on this technique as a function of their absorber type, density and distribution of fibers and fiber types.

Contin, A.; De Salvo, R.; Gorodetzky, P.; Helleboid, J. M.; Johnson, K. F.; Juillot, P.; Lazic, D.; Lundin, M.

1995-12-01

287

Hardness results for multicast cost sharing  

Microsoft Academic Search

We continue the study of multicast cost sharing from the viewpoints of both computational complexity and economic mechanism design. We provide fundamental lower bounds on the network complexity of group-strategyproof, budget-balanced mechanisms. We also extend a classical impossibility result in game theory to show that no strategyproof mechanism can be both approximately efficient and approximately budget-balanced. Our results show that

Joan Feigenbaum; Arvind Krishnamurthy; Rahul Sami; Scott Shenker

2003-01-01

288

Recent results from COMPASS muon scattering measurements  

NASA Astrophysics Data System (ADS)

A sample of recent results in muon scattering measurements from the COMPASS experiment at CERN will be reviewed. These include high energy processes with longitudinally polarised proton and deuteron targets. High energy polarised measurements provide important constraints for studying the nucleon spin structure and thus permit to test the applicability of the theoretical framework of factorisation theorems and perturbative QCD. Specifically, latest results on longitudinal quark polarisation, quark helicity densities and gluon polarisation will be reviewed.

Capozza, Luigi; COMPASS Collaboration

2012-10-01

289

Definitive results finding in web search environment  

Microsoft Academic Search

In Web search area, queries with definitive results are frequently issued by people, such as ldquo163rdquo whose definitive URL is ldquohttp:\\/\\/www.163.comrdquo. The definitive relationship of these queries and corresponding pages are much more stable than that of other queries. Improving search result for queries of this kind is expected to make a beneficial effect on overall performance of a search

Yong-Mei Gao; Ya-Lou Huang

2009-01-01

290

Reproducibility of liquid oxygen impact test results  

NASA Technical Reports Server (NTRS)

Results for 12,000 impacts on a wide range of materials were studied to determine the reproducibility of the liquid oxygen impact test method. Standard deviations representing the overall variability of results were in close agreement with the expected values for a binomial process. This indicates that the major source of variability is due to the go - no go nature of the test method and that variations due to sampling and testing operations were not significant.

Gayle, J. B.

1975-01-01

291

Review of recent irradiation-creep results  

SciTech Connect

Materials deform faster under stress in the presence of irradiation by a process known as irradiation creep. This phenomenon is important to reactor design and has been the subject of a large number of experimental and theoretical investigations. The purpose of this work is to review the recent experimental results to obtain a summary of these results and to determine those research areas that require additional information. The investigations have been classified into four subgroups based on the different experimental methods used. These four are: (1) irradiation creep using stress relaxation methods, (2) creep measurements using pressurized tubes, (3) irradiation creep from constant applied load, and (4) irradiation creep experiments using accelerated particles. The similarity and the differences of the results from these methods are discussed and a summary of important results and suggested areas for research is presented. In brief, the important results relate to the dependence of creep on swelling, temperature, stress state and alloying additions. In each of these areas new results have been presented and new questions have arisen which require further research to answer. 65 references.

Coghlan, W.A.

1982-05-01

292

[Retroperitoneal tumors. Tactics, technics and surgical results].  

PubMed

Out of 33 cases of retroperitoneal tumours (TRP), collected throughout 11 years (1970-1981), 8 (24%) resulted benign, 25 (76%) malignant. Liposarcoma resulted the most frequent tumour. In 11 of the 25 cases of malignant TRP (44%), a radical removal of the tumour was performed; in 8 (32%), a palliative demolition, and in the remaining 6 (24%) a simple diagnostic laparotomy. In 10 of the 19 demolitive operations (53%) the removal was extended to contiguous organs: kidney, adrenal glands, colon, pancreas, spleen, bladder, stomach. The postoperative mortality was 6%. The cases of recurrence after operations considered radical were 5 (45%). Out of the 8 patients suffering from benign neoformations, 7 underwent simple removal, and result recovered. The global survival for malignant TRP was 20% after 5 years and 8% after 10 years; as related to the cases subjected to radical removal, it results 45% and 18% respectively. The Authors maintain the essential function of computerized axial tomography (TAC) in the preoperative anatomo-topographic outlining of the retroperitoneal mass and in the early recognition of the remote recurrences. An aggressive surgical behaviour seems to be presently the primary therapeutical solution; nevertheless, the encouraging results obtained through the complementary treatment (radiotherapy and chemotherapy) command the necessity of a pluridisciplinary management of the treatment of TRP as an essential condition for the improvement of the remote results. PMID:6084560

Serio, G; Danieli, D; Procacci, C; Caudana, R; Mangiante, G; Nifosi, F; Benetti, R; Mongelli, D

1983-02-01

293

Scheduling periodic jobs that allow imprecise results  

NASA Technical Reports Server (NTRS)

The problem of scheduling periodic jobs in hard real-time systems that support imprecise computations is discussed. Two workload models of imprecise computations are presented. These models differ from traditional models in that a task may be terminated any time after it has produced an acceptable result. Each task is logically decomposed into a mandatory part followed by an optional part. In a feasible schedule, the mandatory part of every task is completed before the deadline of the task. The optional part refines the result produced by the mandatory part to reduce the error in the result. Applications are classified as type N and type C, according to undesirable effects of errors. The two workload models characterize the two types of applications. The optional parts of the tasks in an N job need not ever be completed. The resulting quality of each type-N job is measured in terms of the average error in the results over several consecutive periods. A class of preemptive, priority-driven algorithms that leads to feasible schedules with small average error is described and evaluated.

Chung, Jen-Yao; Liu, Jane W. S.; Lin, Kwei-Jay

1990-01-01

294

Latest result of PRK with excimer laser  

NASA Astrophysics Data System (ADS)

We have in the last two years, performed PRK operation on over 300 human myopic eyes using ArF excimer laser with a Summit 'Omnimed' machine. For the initial 53 myopic eyes we treated, results were very good for those with correction less than minus 6 diopters. However, as previously reported, we also witnessed some regression for those eyes exceeding correction of more than minus 6 diopters. To counter such ill results of PRK we devised and suggested many new procedures for PRK with very good results. One such invention is the 'Okamoto-type' cooling machine for the cornea which reduces and stabilizes cornea temperature at 0 degrees Celsius while simultaneously bathing the cornea with special cooling fluid. After the operation, EGF, fibronectin and hexapeptide were administered using eyedrops. Soft contact lenses were used to protect the cornea, improve delivery of medication to the operated area, prevent infection and inflammation and also promote uniform and faster ephiterium regrowth. We were able to document very good post-operative results using this method, thereby giving us strong assurance that we have reached a significant milestone in PRK operation. Our report today covers post operative results of the 52 eyes we operated on and tracked for more than one year.

Okamoto, Shinseiro; Okamoto, Michika

1996-05-01

295

Quasi-normal frequencies: key analytic results  

NASA Astrophysics Data System (ADS)

The study of exact quasi-normal modes [QNMs], and their associated quasi-normal frequencies [QNFs], has had a long and convoluted history — replete with many rediscoveries of previously known results. In this article we shall collect and survey a number of known analytic results, and develop several new analytic results — specifically we shall provide several new QNF results and estimates, in a form amenable for comparison with the extant literature. Apart from their intrinsic interest, these exact and approximate results serve as a backdrop and a consistency check on ongoing efforts to find general model-independent estimates for QNFs, and general model-independent bounds on transmission probabilities. Our calculations also provide yet another physics application of the Lambert W function. These ideas have relevance to fields as diverse as black hole physics, (where they are related to the damped oscillations of astrophysical black holes, to greybody factors for the Hawking radiation, and to more speculative state-counting models for the Bekenstein entropy), to quantum field theory (where they are related to Casimir energies in unbounded systems), through to condensed matter physics, (where one may literally be interested in an electron tunnelling through a physical barrier).

Boonserm, Petarpa; Visser, Matt

2011-03-01

296

Preliminary Results from the Confined Helium Experiment  

NASA Technical Reports Server (NTRS)

We describe the preliminary results from an experiment to measure the heat capacity of helium confined within a stack of evenly spaced silicon plates at temperatures very close to the superfluid transition. The resolution of the heat capacity measurements was generally about 5x10 (exp -9)K, allowing the finite size peak to be mapped in detail. In addition, wide range data containing information on the behavior of the surface specific heat was collected. The preliminary analysis shows fair agreement with theory, but some discrepancies. The results can also be combined with related ground measurements on smaller length scales to perform additional tests of scaling predictions for cross-over to lower dimensional behavior. Some results in this area are also presented.

Lipa, J. A.; Swanson, D. R.; Nissen, J. A.; Williamson, P. R.; Geng, K.; Stricker, D. A.; Chui, T. C. P.; Israelson, U. E.; Larson, M.

1999-01-01

297

Titan : Topography Results from Cassini RADAR  

NASA Astrophysics Data System (ADS)

In addition to mapping with SAR imaging, the Cassini RADAR instrument provides a number of other quantitative datasets that are yielding new insights into Titan and the processes that shape it. New topographic results include the recent altimetry profile across Ontario Lacus, a hydrocarbon lake, showing that it is in a topographic low, very flat and very reflective, consistent with a very smooth liquid surface. Another emerging result is an estimate of the global shape from combined altimetry and SARtopo, indicating that the polar radius is smaller than the equatorial, perhaps a factor in the prevalence of lakes at high latitudes. On the smaller scale, topographic measurements are allowing the quantification of the shape of the few observed craters and their ejecta, and of the relationship between topographic and albedo features and the deflection of dune- forming winds. This invited talk summarizes some of these new results.

Lorenz, R. D.; Cassiniradarteam, T. H. E.

2009-04-01

298

On the reliability of reverse engineering results.  

PubMed

Determination of actual parameters of manufactured optical coatings (reverse engineering of optical coatings) provides feedback to the design-production chain and thus plays an important role in raising the quality of optical coatings production. In this paper, the reliability of reverse engineering results obtained using different types of experimental data is investigated. Considered experimental data include offline normal incidence transmittance data, offline ellipsometric data, and online transmittance monitoring data recorded during depositions of all coating layers. Experimental data are obtained for special test quarter-wave mirrors with intentional errors in some layers. These mirrors were produced by a well-calibrated magnetron-sputtering process. The intentional errors are several times higher than estimated errors of layer thickness monitoring, and the reliability of their detection is used as a measure of reliability of reverse engineering results. It is demonstrated that the most reliable results are provided by online transmittance data. PMID:22859046

Amotchkina, Tatiana V; Trubetskov, Michael K; Pervak, Vladimir; Romanov, Boris; Tikhonravov, Alexander V

2012-08-01

299

MiniBooNE Oscillation Results 2011  

SciTech Connect

The MiniBooNE neutrino oscillation search experiment at Fermilab has recently updated results from a search for {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations, using a data sample corresponding to 8.58 x 10{sup 20} protons on target in anti-neutrino mode. This high statistics result represent an increase in statistics of 52% compared to result published in 2010. An excess of 57.7 {+-} 28.5 events is observed in the energy range 200 MeV < E{sub {nu}} < 3000 MeV. The data favor LSND-like {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations over a background only hypothesis at 91.1% confidence level in the energy range 475 < E{sub {nu}} < 3000 MeV.

Djurcic, Zelimir

2012-01-01

300

Adaptive structures - Test hardware and experimental results  

NASA Technical Reports Server (NTRS)

The facilities and procedures used at JPL to test adaptive structures such as the large deployable reflector (LDR) are described and preliminary results are reported. The applications of adaptive structures in future NASA missions are outlined, and the techniques which are employed to modify damping, stiffness, and isolation characteristics, as well as geometric changes, are listed. The development of adaptive structures is shown to be effective as a result of new actuators and sensors, and examples are listed for categories such as fiber optics, shape-memory materials, piezoelectrics, and electrorheological fluids. Some ground test results are described for laboratory truss structures and truss test beds, which are shown to be efficient and easy to assemble in space. Adaptive structures are shown to be important for precision space structures such as the LDR, and can alleviate ground test requirements.

Wada, Ben K.; Fanson, James L.; Chen, Gun-Shing; Kuo, Chin-Po

1990-01-01

301

East Mountain Area 1995 air sampling results  

SciTech Connect

Ambient air samples were taken at two locations in the East Mountain Area in conjunction with thermal testing at the Lurance Canyon Burn Site (LCBS). The samples were taken to provide measurements of particulate matter with a diameter less than or equal to 10 micrometers (PM{sub 10}) and volatile organic compounds (VOCs). This report summarizes the results of the sampling performed in 1995. The results from small-scale testing performed to determine the potentially produced air pollutants in the thermal tests are included in this report. Analytical results indicate few samples produced measurable concentrations of pollutants believed to be produced by thermal testing. Recommendations for future air sampling in the East Mountain Area are also noted.

Deola, R.A. [Sandia National Labs., Albuquerque, NM (United States). Air Quality Dept.

1996-09-01

302

Results from the CDMS II experiment  

NASA Astrophysics Data System (ADS)

I report recent results and the status of the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory in Minnesota, USA. A blind analysis of data taken by 30 detectors between October 2006 and July 2007 found zero events consistent with WIMPs elastically scattering in our Ge detectors. This resulted in an upper limit on the spin-independent, WIMP-nucleon cross section of 6.6 × 10-44 cm2 (4.6 × 10-44 cm2 when combined with our previous results) at the 90% C.L. for a WIMP of mass 60 GeV/c2. In March 2009 data taking with CDMS II stopped in order to install the first of 5 SuperTowers of detectors for the SuperCDMS Soudan project. Analysis of data taken between August 2007 and March 2009 is ongoing.

Cooley, Jodi; CDMS II Collaboration

2010-01-01

303

Review of Fenton Hill HDR test results  

SciTech Connect

Results of recent flow testing at Fenton Hill, New Mexico, have been examined in light of their applicability to the development of commercial-scale hot dry rock (HDR) reservoirs at other sites. These test results, obtained during the cumulative 11 months of reservoir flow testing between 1992 and 1995, show that there was no significant production temperature drawdown during this time and that the reservoir flow became more dispersed as flow testing proceeded. Based on these test results together with previous HDR research at Fenton Hill and elsewhere, it is concluded that a three-well geometry, with one centrally located injection well and two production wells-one at each end of the pressure-stimulated reservoir region-would provide a much more productive system for future HDR development than the two-well system tested at Fenton Hill.

Brown, D.

1997-01-01

304

Results with the UKIRT infrared camera (Contributed)  

NASA Astrophysics Data System (ADS)

A wide range of observational results from the commissioning of the first infrared camera on UKIRT are presented. The camera, called IRCAM 1, employs the 62×58 InSb DRO array from SBRC in an otherwise general purpose system which is briefly described. Several imaging modes are possible including staring, chopping and a high-speed snapshot mode. Infrared imaging polarimetry is also possible. Results to be presented include the first true high resolution images at IR wavelengths of the entire Orion nebula. The experiences with using this array on the telescope since October 1986 are discussed and future plans outlined.

McLean, I. S.

305

Results with the UKIRT infrared camera  

NASA Astrophysics Data System (ADS)

Recent advances in focal plane array technology have made an immense impact on infrared astronomy. Results from the commissioning of the first infrared camera on UKIRT (the world's largest IR telescope) are presented. The camera, called IRCAM 1, employs the 62 x 58 InSb DRO array from SBRC in an otherwise general purpose system which is briefly described. Several imaging modes are possible including staring, chopping and a high-speed snapshot mode. Results to be presented include the first true high resolution images at IR wavelengths of the entire Orion nebula.

McLean, Ian S.

1987-01-01

306

1995 Accident Sequence Precursor (ASP) Program results  

SciTech Connect

The Accident Sequence Precursor (ASP) Program involves the systematic review and evaluation of operational events that have occurred at light-water reactors to identify and categorize precursors to potential severe core damage accident sequences. The results of the ASP Program are published in an annual report. The most recent report, which contains the precursors for 1995, is NUREG/CR-4674, Volume 23, Precursors to Potential Severe Core Damage Accidents: 1995, A Status Report, published in April 1997. This article provides an overview of the ASP review and evaluation process and a summary of the results for 1995.

Muhlheim, M.D.; Belles, R.J.; Cletcher, J.W.; Copinger, D.A. [Oak Ridge National Lab., TN (United States); O`Reilly, P.D. [Nuclear Regulatory Commission, Washington, DC (United States); Dolan, B.W.; Minarick, J.W. [Science Applications International Corp., Oak Ridge, TN (United States)

1997-01-01

307

Tunka-133: Results of 3 year operation  

NASA Astrophysics Data System (ADS)

The EAS Cherenkov light array Tunka-133, with ~3 km2 geometric area, is taking data since 2009. The array permits a detailed study of cosmic ray energy spectrum and mass composition in the PeV energy range. After a short description of the methods of EAS parameter reconstruction, we present the all-particle energy spectrum and results of studying CR composition, based on 3 seasons of array operation. In the last part of the paper, we discuss possible interpretations of the obtained results.

Prosin, V. V.; Berezhnev, S. F.; Budnev, N. M.; Chiavassa, A.; Chvalaev, O. A.; Gress, O. A.; Dyachok, A. N.; Epimakhov, S. N.; Karpov, N. I.; Kalmykov, N. N.; Konstantinov, E. N.; Korobchenko, A. V.; Korosteleva, E. E.; Kozhin, V. A.; Kuzmichev, L. A.; Lubsandorzhiev, B. K.; Lubsandorzhiev, N. B.; Mirgazov, R. R.; Panasyuk, M. I.; Pan'kov, L. V.; Popova, E. G.; Ptuskin, V. S.; Semeney, Yu. A.; Silaev, A. A.; Silaev, A. A.; Skurikhin, A. V.; Spiering, C.; Sveshnikova, L. G.; Yashin, I. V.; Zagorodnikov, A. V.

2014-08-01

308

Open heavy-flavour results from ALICE  

NASA Astrophysics Data System (ADS)

The ALICE Collaboration has measured heavy-flavour production in a wide rapidity range and in several decay channels in pp, Pb-Pb and, recently, in p-Pb collisions. An overview of some recent results is presented in this paper, with a particular emphasis on the first measurements in p-Pb collisions at = 5.02 TeV. A selection of the new results in Pb-Pb collisions at = 2.76 TeV is discussed as well.

Stocco, Diego; Alice Collaboration

2014-05-01

309

NEW RESULTS FROM CRYSTAL COLLIMATION AT RHIC.  

SciTech Connect

In this paper, we discuss new results from the use of the crystal collimator from the 2003 run. The yellow ring of the Relativistic Heavy Ion Collider (RHIC) has a bent crystal collimator. By properly aligning the crystal to the beam halo, particles entering the crystal are deflected away from the beam and intercepted downstream in a copper scraper. The purpose of a bent crystal is to improve the collimation efficiency as compared to a scraper alone. We compare these results to previous data, simulation, and theoretical predictions.

FLILLER,R.P.,IIIDREES,A.GASSNER,D.HAMMONS,L.MCINTYRE,G.PEGGS,S.TRBOJEVIC,D.BIRYUKOV,V.CHESNOKOV,Y.TEREKHOV,V.

2003-05-12

310

Recent results from COMPASS spin program  

NASA Astrophysics Data System (ADS)

COMPASS is a fixed target experiment at CERN's Super-Proton-Synchrotron. Part of its physics program is dedicated to the spin structure of the nucleon, which it studies with a polarized muon beam and polarized targets. An overview of its recent results along this line is given. In particular, the first results of our 2011 longitudinally polarized proton run, a report on our progress towards the extraction of the gluon polarization, ? G, at NLO and an update on our measurements of transverse spin and k T -dependent processes, from our 2010 transversely polarized proton data, and of hadron multiplicities.

Bedfer, Y.

2013-11-01

311

Relativity concept inventory: Development, analysis, and results  

NSDL National Science Digital Library

We report on a concept inventory for special relativity: the development process, data analysis methods, and results from an introductory relativity class. The Relativity Concept Inventory tests understanding of relativistic concepts. An unusual feature is confidence testing for each question. This can provide additional information; for example, high confidence correlated with incorrect answers suggests a misconception. A novel aspect of our data analysis is the use of Monte Carlo simulations to determine the significance of correlations. This approach is particularly useful for small sample sizes, such as ours. Our results show a gender bias that was not present in course assessment, similar to that reported for the Force Concept Inventory.

Aslanides, J. S.; Savage, Craig M.

2013-07-31

312

[Pulsar perimetry. A review and new results].  

PubMed

We present a review and update on Pulsar perimetry, which combines temporal frequency, contrast and spatial frequency stimuli. The effects of age, visual acuity, and learning on results are described. Data on threshold fluctuation, signal-to-noise ratio, and the possibility of reducing noise with filtering techniques are provided. We describe its dynamic range and the possibility of compensating for profound defects. Finally, we show the results obtained in normal patients and in those with ocular hypertension or initial glaucoma, as well as an analysis of glaucoma progression. PMID:23392836

Gonzalez de la Rosa, M; Gonzalez-Hernandez, M

2013-02-01

313

The Humanoid Robot LOLA-Experimental Results  

NASA Astrophysics Data System (ADS)

With the experience gathered during the development and construnction of the robot JOHNNIE, a new humanoid robot LOLA was built. Goal of this project is to realize a fast, human-like walking. Different aspects of this complex mechatronic system and the first experiments results are presented. The lightweight construction and the custom build multi-sensory joint drives with high torque brushless motors are introduced. The new decentralized electronic control/sensing network is also discuss as well as the simulation environment, the trajectory planning algorithm and the stabilizing walking control. Finally the first experiments result are presented.

Favot, V.; Schwienbacher, M.; Buschmann, T.; Lohmeier, S.; Ulbrich, H.

2010-09-01

314

EDELWEISS-II : status and first results  

SciTech Connect

The EDELWEISS-II experiment is devoted to the direct detection of WIMP dark matter, using a new generation of cryogenic germanium detectors. We will present preliminary results of the first operation of these detectors installed in the Modane underground laboratory. Very low radioactive background conditions are achieved. Furthermore, these new detectors, with a special electrode design for active rejection of surface events, have been experimentally shown to be suited for WIMP searches with spin-independent scattering cross-sections on a nucleon well below 10{sup -8} pb. Preliminary results of WIMP searches performed with a first set of these detectors will be shown as well.

Armengaud, E. [CEA Saclay, IRFU/SPP, Gif sur Yvette F-91190 (France)

2010-02-10

315

Synthesizing Results from the Trial State Assessment.  

ERIC Educational Resources Information Center

Uses data from the Trial State Assessment of the National Assessment of Educational Progress to describe and illustrate a two-stage statistical model for investigating state-to-state variation in mathematics achievement. Results reveal considerable state-to-state heterogeneity in mathematics proficiency, but most heterogeneity is explainable on…

Raudenbush, Stephen W.; Fotiu, Randall P.; Cheong, Yuk Fai

1999-01-01

316

US pipelines report mixed results for 1993  

Microsoft Academic Search

US natural gas pipelines started 1994 in generally better conditions than a year earlier. These companies' operational and financial results for 1993 indicate modest but continuing improvement. Petroleum liquids pipelines, on the other hand, suffered reduced revenues and incomes last: increased deliveries and trunkline movement of liquid petroleum products failed fully to offset fewer barrels of crude oil moving through

1994-01-01

317

Organizational Analysis With Results Using Transactional Analysis  

ERIC Educational Resources Information Center

OARTA (Organization Analysis with Results Using Transactional Analysis) is a way of thinking designed to resolve problems and reach goals through action-oriented research and analysis--a learning experience in which members of an organization can develop themselves and their organization. (ABM)

Clary, Thomas C.; Clary, Erica W.

1976-01-01

318

Maine's Balance of Representation: Information and Results  

ERIC Educational Resources Information Center

This document, a companion to the "LAS Guide Principles and Criteria for the Adoption of Local Assessment Systems," [ED484135] presents results that are intended to provide Maine's school administrative units with an option for selecting sample performance indicators to be assessed through the Local Assessment System to meet the requirements for…

Maine Department of Education, 2003

2003-01-01

319

The Significance of Paleomagnetic Results from Africa  

Microsoft Academic Search

Paleomagnetic results from Africa are critically reviewed and polar-wander curves are presented for the early Precambrian and for the interval from the Permian to the present. The data are shown to be consistent with the hypothesis that the dispersion of the geomagnetic field with respect to an axial geocentric dipole field was similar to its present dispersion both in the

D. I. Gough; N. D. Opdyke; M. W. McElhinny

1964-01-01

320

PHASE I SINGLE CELL ELECTROLYZER TEST RESULTS  

Microsoft Academic Search

This document reports the results of Phase I Single Cell testing of an SO-Depolarized Water Electrolyzer. Testing was performed primarily during the first quarter of FY 2008 at the Savannah River National Laboratory (SRNL) using an electrolyzer cell designed and built at SRNL. Other facility hardware were also designed and built at SRNL. This test further advances this technology for

J Steimke; T Timothy Steeper

2008-01-01

321

Recent ASSA results on comets and meteors  

Microsoft Academic Search

Since I took over as Director of the Comet and Meteor Section ten years ago, members have produced some useful scientific contributions on sev- eral comets and meteor showers. In this paper I will summarise the observing methodology, show a selection of results and review areas where further contri- butions can be made.

T P Cooper

322

Candidates of Race and Political Poll Results.  

ERIC Educational Resources Information Center

Researchers often consider how personal attributes affect the data gathered, and how that effect can be eliminated, or at least minimalized. This question takes on added significance in the realm of politics. Numerous studies have examined the issue of interviewer/interviewee race. The results of these studies indicate that members of one race…

Loge, Peter

323

Overall distributed model intercomparison project results  

Microsoft Academic Search

This paper summarizes results from the Distributed Model Intercomparison Project (DMIP) study. DMIP simulations from twelve different models are compared with both observed streamflow and lumped model simulations. The lumped model simulations were produced using the same techniques used at National Weather Service River Forecast Centers (NWS-RFCs) for historical calibrations and serve as a useful benchmark for comparison. The differences

Seann Reed; Victor Koren; Michael Smith; Ziya Zhang; Fekadu Moreda; Dong-Jun Seo

2004-01-01

324

Summary of recent color coherence results  

SciTech Connect

Recent experimental results on color coherence phenomena from e{sup +}e{sup -}, ep, and p{anti p} collisions are presented. The data are compared to analytic perturbative QCD calculations based on the modified leading logarithm approximation and the local parton hadron duality hypothesis.

Varelas, N., University of Chicago

1998-08-01

325

Unfavourable results in free tissue transfer  

PubMed Central

With recent advances in the instrumentation and with increased expertise the results of microvascular surgery are getting better. Complications though, cannot be completely avoided. This paper gives a brief introduction to the possible complications at various stages of free tissue transfer. With careful planning and execution and vigilant postoperative care the overall success rate can be improved.

Koul, Ashok Raj; Patil, Rahul K.; Nahar, Sushil

2013-01-01

326

Preliminary Youth Risk Behavior Survey Results--1993.  

ERIC Educational Resources Information Center

This paper provides the results of a 1993 survey of 2,684 New Hampshire high school students in regard to risk taking, personal violence, suicide, tobacco use, alcohol abuse, drug abuse, acquired immune deficiency syndrome (AIDS) education, sexual activity, nutrition, and exercise. It found that in the preceding 30 days, 10.8 percent of students…

Johnson, Joyce, Comp.

327

Results from the Telescope Array Experiment  

NASA Astrophysics Data System (ADS)

The Telescope Array experiment is the largest hybrid detector to observe ultra-high energy cosmic rays in the northern hemisphere. The observation started in November 2007 for Fluorescence Detector (FD) and in March 2008 for Surface Detectors (SD). Here we present the preliminary results of energy spectra measured by three different methods, mass composition, photon search and AGN correlation search from the Telescope Array. The energy spectra measured by the Middle-Drum FD station, which is the refurbished detector of the High Resolution Fly's Eye (HiRes) experiment, and hybrid technique with two new FDs and SD were consistent with the result of HiRes. The systematic error of the energies in hybrid measurement is 19%. The SD spectrum showed the suppression above 1019.75 eV with 3.5? away from the continuous spectrum. The measured mass composition with stereo technique of new FDs was consistent with pure proton model between 1018.6 eV to 1019.3 eV. Photon search resulted in an improved flux limit above 1019 eV. The result of AGN correlation from TA was consistent with background.

Ikeda, D.; Telescope Array Collaboration

2011-07-01

328

Preliminary silver-hydrogen cell test results  

NASA Technical Reports Server (NTRS)

Silver-hydrogen cells were tested. The objective of the test was to estimate useful life by operation at accelerated, simulated geosynchronous orbit conditions. Ten simulated seasons were run and are summarized. The results to-date reflect stable, trouble-free performance and indicate that the silver-hydrogen couple shows promise as a lightweight alternative to the nickel systems.

Lurie, C.

1984-01-01

329

Milestone M4900: Simulant Mixing Analytical Results  

SciTech Connect

This report addresses Milestone M4900, ''Simulant Mixing Sample Analysis Results,'' and contains the data generated during the ''Mixing of Process Heels, Process Solutions, and Recycle Streams: Small-Scale Simulant'' task. The Task Technical and Quality Assurance Plan for this task is BNF-003-98-0079A. A report with a narrative description and discussion of the data will be issued separately.

Kaplan, D.I.

2001-07-26

330

Mars Pathfinder, Science Results, Geology and Geomorphology  

NSDL National Science Digital Library

This NASA-hosted site is a section of the Mars Pathfinder Science Results Directory with a specific emphasis on the geologic and geomorphic characteristics observed. Many photos and satellite images are available, with the option to view and download full size images. Scientific theories are offered as to the probable geomorphic agents sculpting Mars' surface.

331

Transients at Fast Pulse Reactors. Simulation Results.  

National Technical Information Service (NTIS)

Results are presented of simulating transients in a pulsed reactor with IBR-2 parameters in the regime of maintaining a pre-set power level. The modes of regular and random reactivity insertions, various coolant flow rates and conversion of the reactor to...

A. K. Popov A. D. Rogov

1977-01-01

332

Experimental SGEMP results using electron beam injection  

Microsoft Academic Search

This paper presents results from a SGEMP\\/IEMP phenomenological experiment designed to explore the behavior of an axially injected electron beam within a cylindrical test chamber. Data on two different injected beams characterized by mean electron energies of 40 and 60 keV and pulse durations of approximately 80 and 30 nsecs full width at half maximum (FWHM) respectively are presented. These

R. J. Fisher; J. S. Duval; W. F. Rich

1975-01-01

333

Experimental SGEMP Results Using Electron Beam Injection  

Microsoft Academic Search

This paper presents results from a SGEMP\\/IEMP phenomenological experiment designed to explore the behavior of an axially injected electron beam Within a cylindrical test chamber, Data on two different injected beams characterized by mean electron energies of 40 and 60 keV and pulse durations of approximately 80 and 30 nsecs full width at half maximum (FWHM) respectively are presented. These

Richard J. Fisher; Joseph S. Duval; W. Foster Rich

1975-01-01

334

Subtalar arthroscopy: indications, technique, and results  

Microsoft Academic Search

The purpose of this study was to present the indications, technique, and results for subtalar arthroscopy in 50 consecutive patients. In each case, ankle arthroscopy was performed concomitantly to assess the exact source of the patient's pain. Surgical indications included chronic pain, swelling, buckling, and\\/or locking that failed conservative treatment. Arthroscopy of the ankle and subtalar joints were performed using

MM Williams

1998-01-01

335

Recent Results in Ring-Diagram Analysis  

NASA Astrophysics Data System (ADS)

The ring-diagram technique was developed by Frank Hill 25 years ago and matured quickly during the late 1990s. It is nowadays one of the most commonly used techniques in local helioseismology. The method consists in the power spectral analysis of solar acoustic oscillations on small regions (2° to 30°) of the solar surface. The power spectrum resembles a set of trumpets nested inside each other and for a given frequency, it looks like a ring, hence the technique's name. It provides information on the horizontal flow field and thermodynamic structure in the layers immediately below the photosphere. With data regularly provided by MDI, GONG, and more recently HMI, many important results have been achieved. In recently years, these results include estimations of the meridional circulation and its evolution with solar cycle; flows associated with active regions, as well as, flow divergence and vorticity, and thermal structure beneath and around active regions. Much progress is expected with data now provided by HMI's high spatial resolution observations and high duty cycle. There are two data processing pipelines (GONG and HMI) providing free access to the data and the results of the ring-diagram analysis. Here we will discuss the most recent results and improvements in the technique, as well as, the many challenges that still remain.

Rabello-Soares, M. C.

2013-12-01

336

Exploring Alternative Approaches for Presenting Evaluation Results  

ERIC Educational Resources Information Center

Evaluators have an obligation to present clearly the results of their evaluative efforts. Traditionally, such presentations showcase formal written and oral reports, with dispassionate language and graphs, tables, quotes, and vignettes. These traditional forms do not reach all audiences nor are they likely to include the most powerful presentation…

Johnson, Jeremiah; Hall, Jori; Greene, Jennifer C.; Ahn, Jeehae

2013-01-01

337

Test Results Untrustworthy. Point of View Essay  

ERIC Educational Resources Information Center

America's public schools are making harmful, irreversible decisions based on test results that--in an increasing number of cases--can't be trusted, Arizona State University's Education Policy Research Laboratory has found. The pressure of high-stakes tests is forcing school districts and state Departments of Education to take inappropriate and at…

Berliner, David C.; Nichols, Sharon L.

2005-01-01

338

Recent results from Fermilab E791  

NASA Astrophysics Data System (ADS)

Fermilab E791 is a high statistics charm experiment using a 500 GeV/c ?- beam incident on a segmented target. We present results based on one third of the 1991-1992 data, with particular emphasis on a search for the flavor changing neutral current decay D+-->?+?+?-.

Nguyen, A.; Aitala, E. M.; Amato, S.; Anjos, J. C.; Appel, J. A.; Aryal, M.; Ashery, D.; Banerjee, S.; Bediaga, I.; Blaylock, G.; Bracker, S. B.; Burchat, P. R.; Burnstein, R. A.; Carter, T.; Carvalho, H. S.; Costa, I.; Cremaldi, L. M.; Darling, C.; Denisenko, K.; Dubbs, T.; Fernandez, A.; Gagnon, P.; Gerson, S.; Gounder, K.; Granite, D.; Halling, M.; Herrera, G.; Hurwitz, G.; James, C.; Kasper, P. A.; Kwan, S.; Langs, D. C.; Leslie, J.; Lichtenstadt, J.; Lundberg, B.; Maytal-Beck, S.; Meadows, B.; de Mello Neto, J. R. T.; Milburn, R. H.; de Miranda, J. M.; Napier, A.; D'Oliveira, A. B.; Peng, K. C.; Perera, L. P.; Purohit, M. V.; Quinn, B.; Radeztsky, S.; Rafatian, A.; Reay, N. W.; Reidy, J. J.; Dos Reis, A. C.; Rubin, H. A.; Santha, A. K. S.; Santoro, A. F. S.; Schwartz, A.; Sheaff, M.; O'Shaughnessy, K.; Sidwell, R. A.; Slaughter, A. J.; Smith, J. G.; Sokoloff, M. D.; Stanton, N.; Sugano, K.; Summers, D. J.; Takach, S.; Thorne, K.; Tripathi, A. K.; Watanabe, S.; Weiss, R.; Wiener, J.; Witchey, N.; Wolin, E.; Yi, D.; Zaliznyak, R.; Zhang, C.

1995-07-01

339

Results of radiotherapy for Peyronie's disease  

SciTech Connect

Purpose: To retrospectively review the results of radiotherapy for Peyronie's disease. Patients and Methods: In the time interval 1983-2000, 154 patients in our clinic were irradiated for Peyronie's disease. Of those, 101 had at least one complete follow-up data set and are the subject of this study. In the majority of patients, penis deviation was between 30 and 50{sup o}, there were one or two indurated foci with a diameter between 5 and 15 mm. Pain was recorded in 48/92 patients. Seventy-two of the 101 patients received radiotherapy with a total dose of 30 Gy, and 25 received 36 Gy in daily fractions of 2.0 Gy. The remaining patients received the following dosage: 34 Gy (1 patient), 38-40 Gy (3 patients). Mean duration of follow-up was 5 years. Results: The best results ever at any time during follow-up were an improvement of deviation in 47%, reduction of number of foci in 32%, reduction of size of foci in 49%, and less induration in 52%. Approximately 50% reported pain relief after radiotherapy. There were 28 patients with mild acute dermatitis and only 4 patients with mild urethritis. There were no long-term side effects. Conclusion: Our results compare well with those of other studies in the literature. In our patient cohort, radiotherapy was an effective therapy option with only very rare and mild side effects.

Niewald, Marcus [Clinic for Radiooncology, Saarland University Hospital, Homburg (Germany)]. E-mail: ramnie@uniklinikum-saarland.de; Wenzlawowicz, Knut v. [Clinic for Radiooncology, Saarland University Hospital, Homburg (Germany); Fleckenstein, Jochen [Clinic for Radiooncology, Saarland University Hospital, Homburg (Germany); Wisser, Lothar [Clinic for Radiooncology, Saarland University Hospital, Homburg (Germany); Derouet, Harry [Clinic for Urology and Pediatric Urology, Saarland University Hospital, Homburg (Germany); Ruebe, Christian [Clinic for Radiooncology, Saarland University Hospital, Homburg (Germany)

2006-01-01

340

Describing Web pages better in search results  

Microsoft Academic Search

This work presents an algorithm for generating internet Web page descriptions automatically in situations where the need is for a lot of information within a few sentences, a typical example being the descriptions of Web pages in search results. Such descriptions often prove to be very useful aids for navigation. Many search engines provide extracts from the page as a

P. Deepak; Jyothi John

2004-01-01

341

Motorcycle Helmet Use in 2010: Overall Results.  

National Technical Information Service (NTIS)

Use of DOT-compliant motorcycle helmets decreased significantly to 54 percent in 2010 from 67 percent in 2009. This result is from the National Occupant Protection Use Survey (NOPUS), which is the only survey that provides nationwide probability-based obs...

2010-01-01

342

Motorcycle Helmet Use in 2009: Overall Results.  

National Technical Information Service (NTIS)

Use of DOT-compliant motorcycle helmets in 2009 stood at 67 percent, a gain from 63 percent in 2008. This result is from the National Occupant Protection Use Survey (NOPUS) which is the only survey that provides the nationwide probability-based observed d...

2009-01-01

343

Internet uses in accounting education: survey results  

Microsoft Academic Search

The authors conducted a survey to determine how, where in the curriculum, and for what purposes accounting educators were using the Internet. The results indicate that pioneering accounting educators generally include Internet-based applications in their courses in order to familiarize students with the Internet, locate current materials to promote in-class discussion, and help with the completion of research projects. The

Richard E. Baker; Clinton E. White

1999-01-01

344

New Results in Astrodynamics Using Genetic Algorithms  

NASA Technical Reports Server (NTRS)

Generic algorithms have gained popularity as an effective procedure for obtaining solutions to traditionally difficult space mission optimization problems. In this paper, a brief survey of the use of genetic algorithms to solve astrodynamics problems is presented and is followed by new results obtained from applying a Pareto genetic algorithm to the optimization of low-thrust interplanetary spacecraft missions.

Coverstone-Carroll, V.; Hartmann, J. W.; Williams, S. N.; Mason, W. J.

1998-01-01

345

Migrated IUCD resulting in increased urinary frequency.  

PubMed

Missing Intrauterine contraceptive devices can migrate to various regions intra-abdominally. Plain radiography usually confirms that the devise is still within the abdominal cavity, while other specific studies may define its relationship with the organ imaged. This is a case of a Migrated IUCD resulting in urinary symptoms. PMID:18318095

Olowoyeye, O A; Tijani, K T

2007-01-01

346

Recent results from proton-antiproton colliders  

SciTech Connect

New results from the CERN and Fermilab proton-antiproton colliders are summarised. The areas covered are jet physics, direct photon production, W and Z production and decay, heavy flavor production, the search for the top quark, and the search for more exotic phenomena. 46 refs., 20 figs., 4 tabs.

Geer, S. (Harvard Univ., Cambridge, MA (USA). High Energy Physics Lab.)

1990-03-01

347

First results from a Intracluster Light Survey  

Microsoft Academic Search

We report the first results of a deep surface brightness survey of a sample of galaxy clusters designed to quantify the properties of the intracluster light as a function of cluster environment. Our goals are to determine how the amount of intracluster starlight varies with other cluster properties (Bautz-Morgan type, richness), and to search for the presence of arcs of

J. J. Feldmeier; C. Mihos; H. L. Morrison; S. Rodney; P. Harding

2000-01-01

348

Some Unexpected Results Using Computer Algebra Systems.  

ERIC Educational Resources Information Center

Shows how teachers can often use unexpected outputs from Computer Algebra Systems (CAS) to reinforce concepts and to show students the importance of thinking about how they use the software and reflecting on their results. Presents different examples where DERIVE, MAPLE, or Mathematica does not work as expected and suggests how to use them as a…

Alonso, Felix; Garcia, Alfonsa; Garcia, Francisco; Hoya, Sara; Rodriguez, Gerardo; de la Villa, Agustin

2001-01-01

349

EAVE-East Field Test Results  

Microsoft Academic Search

EAVE-East is an untethered autonomous submersible being developed by the Marine systems Engineering Laboratory (MSEL) at the University of New Hampshire. The submersible underwent intensive development testing during the summer and fall of 1983. Results of these tests will be presented to specifically address the following: 1. Vehicle navigation capability; 2. Vehicle controllability; 3. Mass data storage and retrieval. The

J. Jalbert

1984-01-01

350

RESULTS OF RECENT INFRASOUND AVALANCHE MONITORING STUDIES  

Microsoft Academic Search

Results of recent infrasound avalanche monitoring studies have advanced technological capabilities and provided further understanding of technological challenges. Avalanche identification performance of single sensor monitoring systems varies according to ambient noise and signal levels. While single sensor signal processing algorithms can identify avalanche activity, uncertainties (missed detections and false alarms) increase with increasing wind noise, and as signal levels decrease

Ernest D. Scott; Christopher T. Hayward; Robert F. Kubichek; Jerry C. Hamann; John W. Pierre

351

Recent Psi Prime Results from Mark III.  

National Technical Information Service (NTIS)

Results on (Psi)(prime) decays from Mark III are presented. With a data sample of 240,000 (psi)(prime) events, we measure (psi)(prime) (yields) (pi)(sup +)(pi)(sup (minus))(psi), (psi)(prime) (yields) (eta)(psi), (psi)(prime) (yields) (gamma)(chi)(sub c),...

R. Mir

1989-01-01

352

Results of Workshops on Privacy Protection Technologies  

Microsoft Academic Search

This talk summarizes the results of a series of workshops on privacy protecting technologies convened in the fall of 2006\\u000a by the Office of the Director of National Intelligence through its Civil Liberties Protection Office and the (then) Disruptive\\u000a Technology Office (now part of the Intelligence Advanced Research Projects Activity, IARPA).

Carl E. Landwehr

2008-01-01

353

Operating Results from the ANL Booster  

Microsoft Academic Search

The former Cornell 2.2-GeV electron synchrotron has been moved to Argonne, modified, and recommissioned as a developmental booster injector for the Zero Gradient Synchrotron (ZGS). The machine uses H- stripping injection to obtain circulating intensities normally impossible to achieve with conventional proton injection techniques. Results of tests performed to date are discussed in this report.

James D. Simpson

1973-01-01

354

Some new results on semilinear elliptic equations  

NASA Astrophysics Data System (ADS)

This thesis is divided into three parts. In the first part, some general results on the stability of droplets with zero contact angle for thin film type equations including those satisfying the power law are established. Instability of droplets with non-zero contact angle and configuration of droplets is also obtained. As applications, finite or infinite time touchdown of solution of the thin film type equations and an asymptotic stability result for droplets with zero contact angle are established. In the second part, steady states including droplet shaped solutions of the thin film type equation are studied on the plane. Results including the existence of radial droplets with zero contact angles and the radial symmetry of droplets with zero contact angles are established. In the third part, we study the scalar curvature equation on S2 . We give two explicit constructions of the scalar curvature functions by perturbing constant with suitable spherical harmonic polynomials. Multiplicity results for the corresponding scalar curvature equations are proved through the calculation of the topological degree of the associated map G for each scalar curvature functions.

Cheung, Ka Luen

355

Viking labeled release biology experiment - Interim results  

Microsoft Academic Search

All results of the labeled-release life-detection experiment conducted on Mars prior to conjunction are summarized. Tests at both landing sites provide remarkably similar evolution of radioactive gas upon addition of a radioactive nutrient to the Mars sample. The 'active' agent in the sample is stable to 18 C, but is substantially inactivated by heat treatment for 3 hours at 50

G. V. Levin; P. A. Straat

1976-01-01

356

Bioreactor landfills: experimental and field results  

Microsoft Academic Search

Bioreactor landfills allow a more active landfill management that recognizes the biological, chemical and physical processes involved in a landfill environment. This paper presents the results of an experimental study carried out to determine the effect of solid waste size, leachate recirculation and nutrient balance on the rate of municipal solid waste (MSW) biodegradation. Higher rates of MSW biodegradation eventually

Mostafa Warith

2002-01-01

357

Latest results from the telescope array  

NASA Astrophysics Data System (ADS)

The Telescope Array ultra-high energy cosmic ray detector, situated in Utah, USA, is taking data since March 2008. We will present the latest results of the spectrum, composition and anisotropy studies based on the 4 years of the Telescope Array data.

Tinyakov, Peter

2014-04-01

358

Results from the Winogradsky Column Study  

NSDL National Science Digital Library

This web page features research results from a student project involving Winogradsky Columns constructed using sandy sediment and water collected from an estuary in Massachusetts. The page includes high-resolution images of the columns and profiles of hydrogen sulfide and methane versus depth.

Science, Semester I.; Laboratory, Marine B.

359

Common Lunar Lander (CLL) Engineering Study Results.  

National Technical Information Service (NTIS)

Information is given in viewgraph form on the Common Lunar Lander (CLL) engineering study results. The mission is to provide a delivery system to soft-land a 200 kg payload set at any given lunar latitude and longitude. Topics covered include the study sc...

J. Stecklein

1991-01-01

360

Artemis: Results of the engineering feasibility study  

NASA Technical Reports Server (NTRS)

Information is given in viewgraph form for the Engineering Feasibility Study of the Artemis Project, a plan to establish a permanent base on the Moon. Topics covered include the Common Lunar Lander (CLL), lunar lander engineering study results, lunar lander trajectory analysis, lunar lander conceptual design and mass properties, the lunar lander communication subsystem design, and product assurance.

1991-01-01

361

Common Lunar Lander (CLL) engineering study results  

NASA Technical Reports Server (NTRS)

Information is given in viewgraph form on the Common Lunar Lander (CLL) engineering study results. The mission is to provide a delivery system to soft-land a 200 kg payload set at any given lunar latitude and longitude. Topics covered include the study schedule, mission goals and requirements, the CLL reference mission, costs, CLL options, and two stage performance analysis.

Stecklein, Jonette

1991-01-01

362

Geostationary Earth Radiation Budget (gerb): Validation Results  

Microsoft Academic Search

The Geostationary Earth Radiation Budget (GERB) instrument on METEOSAT-8 is making the first measurements of the Earth's radiation budget from geostationary orbit. The first validated GERB Edition 1 products were released to the scientific community via the ggsps archive (http:\\/\\/ggsps.rl.ac.uk) earlier this year. This paper summaries the calibration accuracy and validation results for these Edition 1 products.

J. E. Russell; J. E. Harries; N. Clearbaux

2006-01-01

363

Validation Results for LEWICE 2.0  

NASA Technical Reports Server (NTRS)

A research project is underway at NASA Lewis to produce a computer code which can accurately predict ice growth under any meteorological conditions for any aircraft surface. This report will present results from version 2.0 of this code, which is called LEWICE. This version differs from previous releases due to its robustness and its ability to reproduce results accurately for different spacing and time step criteria across computing platform. It also differs in the extensive amount of effort undertaken to compare the results in a quantified manner against the database of ice shapes which have been generated in the NASA Lewis Icing Research Tunnel (IRT). The results of the shape comparisons are analyzed to determine the range of meteorological conditions under which LEWICE 2.0 is within the experimental repeatability. This comparison shows that the average variation of LEWICE 2.0 from the experimental data is 7.2% while the overall variability of the experimental data is 2.5%.

Wright, William B.; Rutkowski, Adam

1999-01-01

364

Borehole Tilt Results from Charlevoix, Quebec.  

National Technical Information Service (NTIS)

Results from the analysis of recordings from the Charlevoix borehole tilt experiment are presented and discussed. Time variations in the tilt tidal admittance are shown to be related to the time variations in the marine loading from the nearby St. Lawrenc...

C. Beaumont J. Kumpel J. Peters

1987-01-01

365

TIMSS 2011 International Results in Mathematics  

ERIC Educational Resources Information Center

The "TIMSS 2011 International Results in Mathematics" summarizes fourth and eighth grade student achievement in each of the 63 countries and 14 benchmarking entities which participated in TIMSS 2011. The report includes trends in mathematics achievement over time for participants in the previous TIMSS 1995, 1999, 2003, and 2007…

Mullis, Ina V. S.; Martin, Michael O.; Foy, Pierre; Arora, Alka

2012-01-01

366

A dual result to Kharitonov's theorem  

Microsoft Academic Search

A dual problem to Kharitonov's problem, involving a diamond instead of a rectangle, is considered. The results show that a family of polynomials with coefficients varying in the diamond is strictly Hurwitz if and only if eight one-dimensional exposed edges of the diamond are strictly Hurwitz

ROBERTO TEMPO

1990-01-01

367

Isolated atomoxetine overdose resulting in seizure  

Microsoft Academic Search

Background: Atomoxetine (Strattera™), has recently been approved for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) in adolescents and adults. Atomoxetine acts by inhibiting the reuptake of norepinephrine. There are limited reports of the effects of atomoxetine in overdose. We report a case of isolated atomoxetine overdose resulting in seizure and mild cardiac toxicity. Case Report: A 17-year-old female ingested

John Kashani; Anne-Michelle Ruha

2007-01-01

368

Functional results after postirradiation rectal reconstruction  

Microsoft Academic Search

The functional results obtained in 26 patients operated on for postirradiation rectovaginal fistula, stricture, or combination of fistula and stricture are reported in detail. Emphasis is placed on the degree of continence obtained. The operation consists of use of proximal nonirradiated colon to repair the damaged area without doing a rectal resection. It has been found that nonirradiated colon with

Eugene M. Bricker; William G. Kraybill; Marvin J. Lopez

1986-01-01

369

Statistical Literacy and Sample Survey Results  

ERIC Educational Resources Information Center

Sample surveys are widely used in the social sciences and business. The news media almost daily quote from them, yet they are widely misused. Using students with prior managerial experience embarking on an MBA course, we show that common sample survey results are misunderstood even by those managers who have previously done a statistics course. In…

McAlevey, Lynn; Sullivan, Charles

2010-01-01

370

THE PREDICTABILITY OF LANGUAGE LEARNING RESULTS.  

ERIC Educational Resources Information Center

IF LANGUAGE CAN BE CONSIDERED AS ONE FORM AMONG SEVERAL BY MEANS OF WHICH MEANING CAN BE CONCEIVED AND TRANSFERRED, THEN IT FOLLOWS THAT LANGUAGE TEACHING SHOULD LEAD ABOVE ALL TO THE FACILE TRANSFER OF MEANING. ACCEPTANCE OF THIS CONCEPT WILL INFLUENCE THE CHOICE OF METHODS AND MATERIALS BEST SUITED TO YIELD THIS RESULT. THE TEACHER'S PURPOSE IS…

ROEMING, ROBERT F.

371

Results on Nonlocal Boundary Value Problems  

Microsoft Academic Search

In this article, we provide a variational theory for nonlocal problems where nonlocality arises due to the interaction in a given horizon. With this theory, we prove well-posedness results for the weak formulation of nonlocal boundary value problems with Dirichlet, Neumann, and mixed boundary conditions for a class of kernel functions. The motivating application for nonlocal boundary value problems is

Burak Aksoylu; Tadele Mengesha

2010-01-01

372

New results on drawing angle graphs  

Microsoft Academic Search

An angle graph is a graph with a fixed cyclic order of the edges around each vertex and an angle specified for every pair of consecutive edges incident on a vertex. We study the problem of constructing a drawing of an angle graph that preserves its angles, and present several new results. •• We disprove the conjectures of Vijayan (1986)

Ashim Garg

1998-01-01

373

MIT 12 Tesla Coil test results  

Microsoft Academic Search

Test results from the MIT 12 Tesla Coil experiment are presented. The coil was tested in the High Field Test Facility (HFTF) of the Lawrence Livermore National Laboratory in October 1984 and January 1985. The experiment measured the performance of an Internally Cooled, Cabled Superconductor (ICCS) of practical size, intended for use in magnetic fusion experiments. The MIT coil carried

M. M. Steeves; M. O. Hoenig

1985-01-01

374

Demystifying Results-Based Performance Measurement.  

ERIC Educational Resources Information Center

Many evaluators are convinced that Results-based Performance Measurement (RBPM) is an effective tool to improve service delivery and cost effectiveness in both public and private sectors. Successful RBPM requires self-directed and cross-functional work teams and the supporting infrastructure to make it work. There are many misconceptions and…

Jorjani, Hamid

375

ATLAS RPC QA results at INFN Lecce  

Microsoft Academic Search

The main results of the quality assurance tests performed on the Resistive Plate Chamber used by the ATLAS experiment at LHC as muon trigger chambers are reported and discussed. These are dark current, gas volume tomography, gas tightness, efficiency, and noise rate.

M. Bianco; I. Borjanovic; G. Cataldi; A. Cazzato; G. Chiodini; M. R. Coluccia; P. Creti; E. Gorini; F. Grancagnolo; R. Perrino; M. Primavera; S. Spagnolo; G. Tassielli; A. Ventura

2006-01-01

376

ATLAS RPC QA results at INFN Lecce  

SciTech Connect

The main results of the quality assurance tests performed on the Resistive Plate Chamber used by the ATLAS experiment at LHC as muon trigger chambers are reported and discussed. These are dark current, gas volume tomography, gas tightness, efficiency, and noise rate.

Bianco, M.; Cazzato, A.; Coluccia, M. R.; Gorini, E.; Spagnolo, S.; Tassielli, G. [Dipartimento di Fisica - via Arnesano 73100, Lecce (Italy); INFN - via Arnesano 73100, Lecce (Italy); Borjanovic, I. [Dipartimento di Fisica - via Arnesano 73100, Lecce (Italy); Cataldi, G.; Chiodini, G.; Creti, P.; Grancagnolo, F.; Perrino, R.; Primavera, M.; Ventura, A. [INFN - via Arnesano 73100, Lecce (Italy)

2006-02-08

377

Recent results from the Crystal Ball experiment  

SciTech Connect

Several recent analyses from the Crystal Ball collaboration are reviewed. The major topics discussed are the search for new states in radiative UPSILON(1S) decays, the search for lepton number-violating and inclusive eta decay modes of the tau, and results from ..gamma gamma.. physics.

Lowe, S.T.

1986-12-01

378

Returned Solar Max hardware degradation study results  

NASA Technical Reports Server (NTRS)

The Solar Maximum Repair Mission returned with the replaced hardware that had been in low Earth orbit for over four years. The materials of this returned hardware gave the aerospace community an opportunity to study the realtime effects of atomic oxygen, solar radiation, impact particles, charged particle radiation, and molecular contamination. The results of these studies are summarized.

Triolo, Jack J.; Ousley, Gilbert W.

1989-01-01

379

Relativity Concept Inventory: Development, Analysis, and Results  

ERIC Educational Resources Information Center

We report on a concept inventory for special relativity: the development process, data analysis methods, and results from an introductory relativity class. The Relativity Concept Inventory tests understanding of relativistic concepts. An unusual feature is confidence testing for each question. This can provide additional information; for example,…

Aslanides, J. S.; Savage, C. M.

2013-01-01

380

Restraints on Dissemination of Research Results.  

ERIC Educational Resources Information Center

The issue of constraints on the publication of research results is discussed from the perspective of clashing values: free speech versus censorship in protection of national defense. The problems of secrecy as well as of disclosure are examined. Greater conflict between academe and military interests is foreseen. (MSE)

Taylor, Dalmas A.

1982-01-01

381

QCD results from D-Zero  

SciTech Connect

We present recent results on jet production, dijet angular distributions, W+ Jets, and color coherence from p{anti p} collisions at {radical}s = 1.8 TeV at the Fermilab Tevatron Collider using the D0 detector. The data are compared to perturbative QCD calculations or to predictions of parton shower based Monte Carlo models.

Varelas, N.; D0 Collaboration

1997-10-01

382

On caching search engine query results  

Microsoft Academic Search

In this paper we explore the problem of Caching of Search Engine Query Results in order to reduce the computing and I\\/O requirements needed to support the functionality of a search engine of the World Wide Web.We study query traces from the EXCITE search engine and show that they have a significant amount of temporal locality that is, a significant

Evangelos P. Markatos

2001-01-01

383

XG Dynamic Spectrum Sharing Field Test Results  

Microsoft Academic Search

This paper describes the results of field testing of the XG Radio system. In August 2006, the XG Radio system was field tested at Fort A.P. Hill, Virginia, in the laboratory, and at field locations in Northern Virginia. The XG Radio system uses dynamic spectrum sharing technology to determine locally unused spectrum, and then operates on these channels without causing

M. McHenry; E. Livsics; Thao Nguyen; N. Majumdar

2007-01-01

384

Results on Fermilab Main Injector Dipole measurements  

Microsoft Academic Search

Measurements of the productions run of Fermilab Main Injector Dipole magnets is underway. Redundant strength measurements provide a set of data which one can fit to mechanical and magnetic properties of the assembly. Plots of the field contribution from the steel supplement the usual plots of transfer function (B\\/I) vs I in providing insight into the measured results

B. C. Brown; R. Baiod; J. Dimarco; H. D. Glass; D. J. Harding; P. S. Martin; S. Mishra; A. Mokhtarani; D. F. Orris; A. D. Russell; J. C. Tompkins; D. G. C. Walbridge

1996-01-01

385

Results from the STAR TPC system test  

Microsoft Academic Search

A system test of various components of the Solenoidal Tracker at RHIC (STAR) detector, operating in concert, has recently come on-line. Communication between a major sub-detector, a sector of the time projection chamber (TPC), and the trigger, data acquisition and slow controls systems has been established, enabling data from cosmic ray muons to be collected. First results from an analysis

W. Betts; F. Bieser; R. Bossingham; M. Botlo; M. Cherney; J. Chrin; P. Colarco; H. Crawford; K. Dao; H. Diaz; D. E. Greiner; L. Greiner; E. L. Hjort; S. Jacobson; R. C. Jared; E. Judd; S. R. Klein; A. N. Lebedev; M. J. LeVine; V. Lindenstruth; M. A. Lisa; K. Marks; C. McParland; T. S. McShane; J. Meier; M. T. Nguyen; D. L. Olson; I. Sakrejda; J. Schambach; R. A. Scheetz; N. T. B. Stone; C. E. Tull; G. Visser; C. Vu; H. Wieman; E. Yee

1997-01-01

386

Recent work and results on sparrow project  

SciTech Connect

This briefing describes recent work undertaken on the Sparrow Project and results of this work. It describes experiments comparing the use of Genie with 2 classes with 3 classes for the problem of ship delineation. It also describes some preliminary work in the area of the optimization of segmentation techniques.

Harvey, Neal R [Los Alamos National Laboratory

2010-12-23

387

Abstracts, Third Space Processing Symposium, Skylab results  

NASA Technical Reports Server (NTRS)

Skylab experiments results are reported in abstracts of papers presented at the Third Space Processing Symposium. Specific areas of interest include: exothermic brazing, metals melting, crystals, reinforced composites, glasses, eutectics; physics of the low-g processes; electrophoresis, heat flow, and convection demonstrations flown on Apollo missions; and apparatus for containerless processing, heating, cooling, and containing materials.

1974-01-01

388

Broadband Heterodyne SIS Spectrometer Prototype: First Results  

NASA Technical Reports Server (NTRS)

The broadband heterodyne SIS receiver system described elsewhere (reference 1) has been assembled and tested both in the laboratory and during two observing runs on the Cassegrain focus of the 10 meter telescope at the Caltech Submillimeter Observatory on Mauna Kea, Hawaii. Here we present a brief summary of the initial results.

Rice, F.; LeDuc, H.; Harris, A.; Hu, S.; Sumner, M.; Zmuidzinas, J.

2004-01-01

389

American Acts of Force: Results and Misperceptions  

Microsoft Academic Search

This article examines and evaluates the apparent results of 12 prominent examples of American acts of force ranging from its entry into World War I to North American Treaty Organization’s (NATO) massive air strike that ended the war in Bosnia. The values in terms of which I judge them are military success (to the extent that it promotes other values),

Ralph K. White

1998-01-01

390

Selected results for LDEF thermal control coatings  

NASA Technical Reports Server (NTRS)

Several different thermal control coatings were analyzed as part of the Long Duration Exposure Facility (LDEF) Materials Special Investigation Group activity and as part of the Space Environment Effects on Spacecraft Materials Experiment M0003. A brief discussion of the results obtained for these materials is presented.

Golden, Johnny L.

1993-01-01

391

Negative Results on Characterizing Visibility Graphs  

Microsoft Academic Search

There is no known combinatorial characterization of the visibility graphs of simple polygons. In this paper we show negative results on two different approaches to finding such a characterization. We show that Ghosh's three necessary conditions for a graph to be a visibility graph are not sufficient thus disproving his conjecture. We also show that there is no finite set

Hazel Everett; Derek G. Corneil

1995-01-01

392

Results of Workshops on Privacy Protection Technologies  

NASA Astrophysics Data System (ADS)

This talk summarizes the results of a series of workshops on privacy protecting technologies convened in the fall of 2006 by the Office of the Director of National Intelligence through its Civil Liberties Protection Office and the (then) Disruptive Technology Office (now part of the Intelligence Advanced Research Projects Activity, IARPA).

Landwehr, Carl

393

Reclassification Survey Results. SPEC Kit 16.  

ERIC Educational Resources Information Center

This kit presents the results of a survey conducted by the Association of Research Libraries (ARL) in 1974 to investigate and document various experiences of academic and research libraries in reclassifying portions of collections or entire collections and the relationship between libraries' particular classification schemes on effective…

Association of Research Libraries, Washington, DC. Office of Management Studies.

394

Results with the neutron scatter camera  

Microsoft Academic Search

We present results from recent deployments with the neutron scatter camera. We successfully detected and pinpointed a hidden 252Cf neutron source in a large ocean tanker at Alameda, CA. In a lab study we detected a 252Cf neutron source at a stand off distance of about 100 ft. We measured the integral flux, differential flux and angular distribution of cosmic

Nicholas Mascarenhas; James Brennan; Kevin Krenz; Peter Marleau; Stanley Mrowka

2008-01-01

395

TMI2 core bore examination results  

Microsoft Academic Search

Examinations are being performed on samples obtained from the lower portion of the TMI-2 reactor core as part of the TMI-2 Sample Acquisition and Examination Program. This paper presents preliminary results of visual examinations, the gamma spectrometry analyses performed on the intact core bores, and the metallurgical examinations. These examinations indicate significant core damage effects on the distribution of core

C. S. Olsen; D. W. Akers; R. K. McCardell

1987-01-01

396

Recent Results from Fermilab E690.  

National Technical Information Service (NTIS)

Partial wave analysis results of centrally produced mesons in the reaction pp (yields) P(sub slow)(X)P(sub fast), with 800 GeV/c protons incident on a liquid hydrogen target are presented. In the reactions considered in this paper, the (X) system decays i...

M. C. Berisso D. C. Christian J. Felix A. Gara E. Gottschalk

1998-01-01

397

Conventional Anchor Test Results at Guam.  

National Technical Information Service (NTIS)

The results of instrumented drag embedment anchor tests in Inner Apra Harbor, Guam are presented. The Navy can use this data for selecting and sizing anchors for Guam as well as other similar sites. Test data for the Navy STOCKLESS and STATO anchors are p...

R. J. Taylor K. Rocker

1980-01-01

398

Multifactor Screener in OPEN: Validation Results  

Cancer.gov

These validation results suggest that dietary exposure estimates computed from the Multifactor Screener may be useful to compare subgroup means, especially for populations consuming mainstream diets. The estimates may be less useful for populations with more ethnic diets, including Asian and possibly Latino populations.

399

New Results on Nucleon Spin Structure  

SciTech Connect

Recent precision spin structure data from Jefferson Lab have significantly advanced our knowledge of nucleon structure in the valence quark (high-x) region and improved our understanding of higher-twist effects, spin sum rules and quark-hadron duality. First, results of a precision measurement of the neutron spin asymmetry, A{sub 1}{sup n}, in the high-x region are discussed. The new data shows clearly, for the first time, that A{sub 1}{sup n} becomes positive at high x. They provide crucial input for the global fits to world data to extract polarized parton distribution functions. Preliminary results on A{sub 1}{sup p} and A{sub 1}{sup d} in the high-x region have also become available. The up and down quark spin distributions in the nucleon were extracted. The results for {Delta}d/d disagree with the leading-order pQCD prediction assuming hadron helicity conservation. Then, results of a precision measurement of the g{sub 2}{sup n} structure function to study higher-twist effects are presented. The data show a clear deviation from the lead-twist contribution, indicating a significant higher-twist (twist-3 or higher) effect. The second moment of the spin structure functions and the twist-3 matrix element d{sub 2}{sup n} results were extracted at a high Q{sup 2} of 5 GeV{sup 2} from the measured A{sub 2}{sup n} in the high-x region in combination with existing world data and compared with a Lattice QCD calculation. Results for d{sub 2}{sup n} at low-to-intermediate Q{sup 2} from 0.1 to 0.9 GeV{sup 2} were also extracted from the JLab data. In the same Q{sup 2} range, the Q{sup 2} dependence of the moments of the nucleon spin structure functions was measured, providing a unique bridge linking the quark-gluon picture of the nucleon and the coherent hadronic picture. Sum rules and generalized forward spin polarizabilities were extracted and compared with Chiral Perturbation Theory calculations and phenomenological models. Finally, preliminary results on the resonance spin structure functions in the Q{sup 2} range from 1 to 4 GeV{sup 2} were presented, which, in combination with DIS data, will enable a detailed study of the quark-hadron duality in spin structure functions.

Jian-Ping Chen

2005-09-10

400

The SUCOZOMA program: results and challenges.  

PubMed

The research program Sustainable Coastal Zone Management (SUCOZOMA), which was started in 1996 by the Swedish Foundation of Strategic Environmental Research, was motivated by the recognition of increasingly severe global, regional and national coastal problems. The program approached the complex issues of coastal eutrophication, fishing practices, and overexploited coastal resources, with a concerted effort involving multidisciplinarity, stakeholder cooperation, and a focus on the problems perceived as most serious by the public and decision-makers. As the program was concluded in 2004 it had resulted in the completion or near-completion of 22 doctoral dissertations and approximately one hundred publications. More than 40 scientists were involved in the program. Göteborg University was the host university, but important research teams have also been located at Stockholm University, the Beijer Institute, and the Kristineberg Marine Research Station of the Royal Swedish Academy of Sciences, and within the National Board of Fisheries. During the program, networks of stakeholders were established and SUCOZOMA had contributed to numerous political and administrative processes relevant for integrated coastal zone management (ICZM). SUCOZOMA program results can be grouped into different categories. Many of the projects in the two phases of the program produced results which can be defined as technical or practical and available for direct implementation in, e.g. mussel cultivation, restoration and safeguarding of spawning areas, seal-safe fishing gear or sustainable fishing of underexploited species. Other results can be characterized as policy oriented, and the impact of these can only be fairly evaluated as new policies are put into effect. SUCOZOMA resulted in important new knowledge regarding coastal science and management, but also concerning the organization required to conduct an end-user oriented multidisciplinary program effectively. PMID:15865301

Carlberg, Anders

2005-03-01

401

Gamma Ray Bursts and recent Swift Results .  

NASA Astrophysics Data System (ADS)

Due to the large activity we had during these last months with the Swift satellite I started the writing of the presentation I gave at the SAIt Catania meeting only in the middle of September. The Swift satellite, however, never rested. Since then and in addition to the results I showed at the meeting in relation to the early and steep light curves observed with the XRT telescope in the 0.2 - 10 keV band, we had fundamental discoveries among which the detection and localization of short bursts and the detection of the largest redshift ever. It obviously would be improper to discuss here the most recent results but it would also be silly in such a fast evolving topics where the day by day observations show excellent results and the observer is far ahead of the theoretician, to write an article that, from the observational point of view, would be completely obsolete. The best approach here seems to be a brief description of what was presented during the meeting briefly mentioning also some of the most recent results. We remind the reader, however, that a copious literature written, and in preparation, exists so that we urge the reader to refer to the specialized articles. This brief article will touch on the basic characteristics of the Gamma Ray Bursts (GRBs) in the Introduction (section 1) and illustrate the basic characteristics of the Swift mission in section 2. Preliminary science results will be discussed in section 3 and finally we will mention one, among many, of the main goal we plan to achieve in Cosmology via the observations of very distant GRBs.

Chincarini, G.

402

Initial results from the Madison Dynamo Experiment  

NASA Astrophysics Data System (ADS)

The Madison dynamo experiment is designed to self-generate magnetic fields from flows of conducting metal in a simply connected spherical geometry. This talk will present initial results from the experiment since commencement of operations in August of 2004. Thus far, the experiment has been operated at 60% of its design specifications achieving magnetic Reynolds numbers of 130, based on propellor tip speed. The technical operation of the experiment has been demonstrated (i.e., transfers of liquid sodium, rotating seals, etc). The experimental approach to understanding the electromagnetic properties of the sodium involves comparisons between experimental measurements of the magnetic field in the sodium experiment, measurements of the velocity field in a dimensionally identical water experiment, and predictive MHD codes that model the currents induced in the turbulent flows by externally applied fields. Initial results include: direct observation of an ? effect, the production of a toroidal magnetic field from a poloidal magnetic field; the expulsion of poloidal flux by vortical fluid motion; measurement of gain for the expected dynamo eignenmode; and measurement of the turbulent shredding of a large scale magnetic field by small scale turbulence, as determined from a spatial array of magnetic probes generating mode number spectra. As background, the theoretical basis for the experiment and hydromagnetic modeling results will be reviewed, including results from recent 3D MHD computation of the backreaction and the role of turbulence on self-excitation. An interesting implication of the simulations is that one role of the turbulence is to increase the critical magnetic Reynolds number for self-excitation, a result consistent with an increased resistivity due to the turbulence, as in the beta effect. Future plans will be discussed, including the strategy observing self-excitation.

Forest, Cary

2005-10-01

403

Recent results from the SAMPLE experiment  

NASA Astrophysics Data System (ADS)

Previously the SAMPLE collaboration measured the parity-violating asymmetry in elastic electron scattering on hydrogen and quasielastic electron scattering on deuterium at backward angles at 200 MeV at the MIT-Bates laboratory[1,2,3]. Combining the results of these measurements allows us to separately determine the nucleon's strange magnetic form factor and the nucleon's neutral weak axial form factor. The neutral weak axial form factor as measured in electron scattering includes anapole contributions and a class of electroweak radiative corrections that are absent in neutrino scattering. The anapole moment is identified as the parity-violating coupling of a photon to the nucleon. It can arise as a result of, for example, a weak interaction between two quarks inside the nucleon. The earlier results from the combined analysis of the previous two SAMPLE experiments yielded a measurement of the axial form factor substantially different from the theoretical estimate[3]. While the 200 MeV data have been revisited and yielded results closer to the theoretical prediction, a third experiment had also been performed of the parity-violating asymmetry in quasielastic electron scattering on deuterium at 125 MeV, which would yield a measurement of the axial form factor with a very different systematic effects. In this talk, results from the new measurement will be presented. [1] B.A.Mueller et al., Phys Rev Lett. 78(1997) 3824. [2] D.T.Spayde et al., Phys Rev Lett. 84(2000) 1106. [3] R.Hasty et al., Science 290(2000) 2021.

Ito, Takeyasu

2003-10-01

404

[Long-term results of tricuspid prostheses].  

PubMed

The results of a series of 38 patients with a tricuspid valve prostheses (:76% Starr-Edwards ball valves) associated with correction of one or two left heart valvular lesions are presented. 24 patients underwent clinical and haemodynamic assessment on average 4,2 years after surgery. The conclusions were that signs of systemic venous hypertension were mainly related to residual right ventricular failure despite normal valve function and secondarily to the poor hemodynamic profile of these prostheses and their paradoxical motion. Using these results: 18% early mortality; 24% late mortality; 24% late thrombosis amongst survivors and 52% residual right ventricular failure; and 47,5% of excellent results. The clinical and haemodynamic profiles of the patients were analysed to determine the surgical indications. Apart from the correction of associated left heart valve lesions, it seems that the prognosis in tricuspid valve repair depends on the duration of tricuspid regurgitation and the severity of right ventricular myocardial disease. In elderly patients with chronic tricuspid regurgitation and severe right ventricular failure, long-term analysis showed 87,5% poor results, whilst in younger patients with a shorter history of tricuspid regurgitation and less severe right ventricular failure, there was 77,7% excellent long-term results. Semi circular annuloplasty is widely indicated in mild or severe functional tricuspid regurgitation. Tricuspid valve replacement, a much more serious operation, remains essential in chronic organic lesions and in some cases of massive functional tricuspid regurgitation. A regards the choice of prosthesis, the authors suggest the Hancock bioprosthesis as a logical choice in cases of severe right ventricular failure as they are less prone to thrombosis than mechanical prostheses and have good haemodynamic profiles. The evolution of the right ventricular failure even after correction of tricuspid regurgitation underlines the importance of preventative therapy by early correction of left heart lesions. PMID:6794514

Ben-Ismail, M; Curran, Y; Bousnina, A

1981-09-01

405

[Results of postoperative radiochemotherapy of glioblastoma multiforme].  

PubMed

Glioblastoma multiforme has one of the worst prognoses of all cancers. A substantial progression in its treatment has been achieved only eight years ago when a new adjuvant radiochemotherapy regimen containing temozolomid has been introduced to the clinical practice. In this paper we evaluate the treatment results in adjuvant radiochemotherapy of glioblastoma carried out by two neurosurgery and oncology centers in Budapest, Hungary and we compared our results to the data of the reference phase III registration trial of the EORTC/NCIC. We analyzed the data of 210 patients treated for glioblastoma between 2005 and 2013. The primary endpoints of our study were overall survival and side effects. We studied and statistically analyzed the influence of multiple factors on survival. We compared our results with the data of the reference study and other results published in the literature. The median follow-up for the surviving patients in our study was 52 months. The median age of our patients was 58 (18-79) years. Seventy-two women and 138 men have been treated. The median overall survival was 17 (3-96) months, the progression-free survival 11 (3-96) months. The radiochemotherapy phase was completed in 95.2% and the monotherapy phase in 68% of all cases.Univariate analysis showed that age, ECOG status and RPA class had significant influence on survival. In multivariate analysis only RPA class remained statistically significant (RR 1.86, 95% CI 1.14-3.05). The proportion of grade III and worse side effects during the chemoradiation phase was 3.8% and in the monotherapy phase 1.9%. These were hematological side effects only. Serious hematological sequelae occurred nearly exclusively in women. Comparing to the reference study the demographic distribution of the patients was similar in our study but among our patients there were less patients with unfavorable prognosis (ECOG 2 or RPA V), and it resulted in a longer median survival than in the original trial (17 vs. 14.6 months). With this analysis of our patients treated according to the Stupp-protocol for glioblastoma multiforme we validated the results of the original EORTC/NCIC study in a Hungarian patient population. Moreover, this comparison proves that the comprehensive Hungarian neuro-oncology service is not at all inferior when compared to any of the developed countries in Europe. PMID:24353988

Lövey, József; Fedorcsák, Imre; Bajcsay, András; Sipos, László; Mangel, László; Kásler, Miklós; Bagó, Attila

2013-12-01

406

Results of isolated posterolateral corner reconstruction  

PubMed Central

Background Isolated posterolateral corner (PLC) tears are relatively rare events. Various surgical techniques to treat posterolateral knee instability have been described; because surgical results are linked to cruciate reconstructions it has been difficult to date to define whether one surgical procedure has better prognosis than another. The goal of this study is to determine the clinical outcome of PLC reconstruction following fibular-based technique. Materials and methods We retrospectively evaluated a case series of patients who received isolated PLC reconstruction between March 2005 and January 2007. Ten patients were surgically treated for isolated injuries and were available for follow-up; average patient age was 27.4 years (range 16–47 years). All patients were treated following the fibular-based technique: double femoral tunnel was performed in six patients, while in the remaining four patients, the reconstruction of the PLC was performed with a single femoral tunnel. Six patients had semitendinosus allograft and four had semitendinosus autograft. All patients had the same evaluation and the same rehabilitation protocol. Results Mean follow-up was 27.5 months (range 18–40 months). Mean range of motion (ROM) was 143.5° for flexion (range 135–150°) and 0.5° for extension (range 0–3°). Three patients showed 1+ on varus stress test, while on Dial test another three patients showed 10° reduction of external rotation compared with contralateral knee. The average Lysholm score was 94 points (range 83–100), and the mean International Knee Documentation Committee (IKDC) subjective result was 88.48 (range 74–96.5). Based on Lysholm score, the results were excellent in eight knees and good in two knees. On IKDC evaluation, two patients were grade A and eight were grade B. No significant difference in clinical results was observed between single and double femoral tunnel. Conclusion Fibular-based technique showed good results in terms of clinical outcome, restoring varus and rotation stability of knees in treatment of chronic isolated PLC injury.

Condello, Vincenzo; Madonna, Vincenzo; Cortese, Fabrizio; D'Arienzo, Michele; Zorzi, Claudio

2010-01-01

407

[Otosclerosis surgery: hearing results and complications].  

PubMed

A retrospective study was made of 183 stapedectomies performed at the Santiago de Compostela Hospital from 1989 to 1996. Sixty-seven percent (67.3%) of patients were women and 32.7% were men. Good results were obtained in 87% of cases (79% had an air-bone gap closure difference under 10 dB, and 8% 10-20 dB). Ten pefect had not change in air threshold and the rest deteriorated. There were no significant differences between stapedectomy and stapedotomy. The 4. 000-Hz improvement obtained was inferior to those in 500, 1,000 and 2,000 Hz. In 8.7% of patients with obliterated footplate, heaving outcome was significantly worse. In patients with exposed or overhanging facial nerve, floating footplate, middle ear fibrosis, and necrosis of the long incus process had better results. Total sensorineural hearing loss occurred in 1.1% of cases. PMID:10867392

Cajade Frías, J; Labella Caballero, T; Ordosgoitia Osorio, H; Castro Vilas, C; Frade González, C

2000-04-01

408

Compact tokamak reactors part 2 (numerical results)  

SciTech Connect

The authors describe a numerical optimization scheme for fusion reactors. The particular application described is to find the smallest copper coil spherical tokamak, although the numerical scheme is sufficiently general to allow many other problems to be solved. The solution to the steady state energy balance is found by first selecting the fixed variables. The range of all remaining variables is then selected, except for the temperature. Within the specified ranges, the temperature which satisfies the power balance is then found. Tests are applied to determine that remaining constraints are satisfied, and the acceptable results then stored. Results are presented for a range of auxiliary current drive efficiencies and different scaling relationships; for the range of variables chosen the machine encompassing volume increases or remains approximately unchanged as the aspect ratio is reduced.

Wiley, J.C.; Wootton, A.J.; Ross, D.W.

1996-10-21

409

New GAMS results on meson spectroscopy  

SciTech Connect

Results on meson spectroscopy obtained in 1993 by the GAMS Collaboration are presented. Model-independent measurements of the {omega} {yields} {eta}{gamma} decay branching ratio, as well as the observation of the X(1740) state in the K{sub s}{sup 0}K{sub s}{sup 0} decay mode, are considered. The results on the partial-wave analysis of the {omega}{pi}{sup 0} and {pi}{sup 0}{pi}{sup 0} systems produced at small momentum transfer in {pi}{sup {minus}}p charge-exchange reactions are discussed. The experiments on resonant {eta}{eta}-system production on a central region of the pp interaction are also discussed. 35 refs., 11 figs.

Sadovsky, S.A.

1994-09-01

410

Recent results from the NOMAD experiment  

NASA Astrophysics Data System (ADS)

Updated results from the appearance search for v? ? v? oscillations in the full NOMAD data sample are reported. A "blind analysis" of both deep-inelastic and low multiplicity samples yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% CL limit region in the sin 22 ??? - ?m2?? plane corresponding to sin 22 ??? < 4.06·10 -4 at large ?m2?? and ?m2?? < 0.75 {eV 2}/{c 4} at sin 22 ??? = 1. The result can be interpreted in the hypothesis of ve ? v? oscillations: in this case the limits are sin 22 ?e? < 2.0·10 -2 at high ?m 2e?and ?m 2e? < 6.0 {eV 2}/{c 4}at sin2 2? e? = 1 .

Mezzetto, Mauro

411

The OPAL opacity code: New results  

SciTech Connect

The OPAL code was developed to calculate the wide range of frequency-dependent and mean opacity data needed to model laboratory experiments and stellar interiors. We use parametric potentials to generate vastly more atomic data than used in earlier opacity work for all elements with atomic number less than 35. We have also developed an improved equation of state based on an activity expansion of the grand canonical partition function. We give herein a brief description of the OPAL code and present new results that include the effect of additional heavy elements compared to our earlier carbons. The importance of very heavy elements having atomic number greater than 30 is also discussed. We present some comparisons with recent results from the Opacity Project and some directions for future work.

Rogers, F.J.; Iglesias, C.A.

1994-12-31

412

Microwave radiometry for humanitarian demining: experimental results  

NASA Astrophysics Data System (ADS)

Previous modeling studies have indicated that a multi-frequency radiometer could prove advantageous for humanitarian demining due to the oscillatory patterns in brightness temperature versus frequency that would be observed in the presence of a sub-surface target. Initial experimental results are reported in this paper from a multi-frequency radiometer (MFRAD) system operating at 19 frequencies in the 2.1-6.5 GHz band. The basic design of MFRAD is reviewed, and the calibration and noise background removal procedures discussed. Experimental results with sub-surface metallic and styrofoam targets are then provided that demonstrate the predicted oscillatory behavior. An FFT-based detection algorithm is also described and applied to measured data. Further plans for experiments and tests with this system are also detailed.

Johnson, Joel T.; Kim, Hyunjin; Wiggins, David R.; Cheon, Yonghun

2002-08-01

413

First Results of the Gasdynamic Mirror Experiment  

NASA Technical Reports Server (NTRS)

An experimental Gasdynamic Mirror or GDM device has been constructed at the NASA Marshall Space Flight Center to provide an initial assessment of the applicability of this technology for propulsion systems. This paper presents the first experimental results obtained from the machine. It is intended that this device operate at higher plasma densities and with much larger L/D ratios than previous mirror machines. The high L/D ratio minimizes to a large extent certain magnetic curvature effects which lead to plasma instabilities causing a loss of plasma confinement. The high plasma density results in the plasma behaving much more like a conventional fluid with a mean free path shorter than the length of the device. This characteristic helps reduce problems associated with "loss cone" microinstabilities. The device has been constructed to allow a considerable degree of flexibility in its configuration thus permitting the experiment to grow over time without necessitating a great deal of additional fabrication.

Emrich, William J., Jr.; Rodgers, Stephen L. (Technical Monitor)

2003-01-01

414

Viking labeled release biology experiment - Interim results  

NASA Technical Reports Server (NTRS)

All results of the labeled-release life-detection experiment conducted on Mars prior to conjunction are summarized. Tests at both landing sites provide remarkably similar evolution of radioactive gas upon addition of a radioactive nutrient to the Mars sample. The 'active' agent in the sample is stable to 18 C, but is substantially inactivated by heat treatment for 3 hours at 50 C and completely inactivated at 160 C, as would be anticipated if the active response were caused by microorganisms. Results from test and heat-sterilized control samples are compared with those obtained from terrestrial soils and a lunar sample. Possible nonbiological explanations of the Mars data are reviewed. Although such explanations of the labeled-release data depend on UV irradiation, the labeled-release response does not appear to depend on recent direct UV activation of surface material. Available facts do not yet permit a conclusion regarding the existence of life on Mars.

Levin, G. V.; Straat, P. A.

1976-01-01

415

Overview of Athena Microscopic Imager Results  

NASA Technical Reports Server (NTRS)

The Athena science payload on the Mars Exploration Rovers (MER) includes the Microscopic Imager (MI). The MI is a fixed-focus camera mounted on an extendable arm, the Instrument Deployment Device (IDD). The MI acquires images at a spatial resolution of 31 microns/pixel over a broad spectral range (400 - 700 nm). The MI uses the same electronics design as the other MER cameras but its optics yield a field of view of 32 32 mm across a 1024 1024 pixel CCD image. The MI acquires images using only solar or skylight illumination of the target surface. The MI science objectives, instrument design and calibration, operation, and data processing were described by Herkenhoff et al. Initial results of the MI experiment on both MER rovers (Spirit and Opportunity) have been published previously. Highlights of these and more recent results are described.

Herkenhoff, K.; Squyres, S.; Arvidson, R.; Bass, D.; Bell, J., III; Bertelsen, P.; Cabrol, N.; Ehlmann, B.; Farrand, W.; Gaddis, L.

2005-01-01

416

DAMA/LIBRA results and perspectives  

NASA Astrophysics Data System (ADS)

The DAMA project operates as an observatory for rare processes, located deep underground at the Gran Sasso National Laboratory of the I.N.F.N. The main apparatus, DAMA/LIBRA, is investigating the presence of Dark Matter particles in the galactic halo by exploiting the model independent DM annual modulation signature. The present DAMA/LIBRA and the former DAMA/NaI (exposed masses: simeq 250 kg and simeq 100 kg of highly radiopure NaI(Tl), respectively) experiments have released so far a total exposure of 1.17 ton × yr, collected over 13 annual cycles. They have obtained a positive model independent result for the presence of DM particles in the galactic halo at 8.9 ? C.L. The main results are here briefly summarised and the future perspectives are considered.

Bernabei, R.; Belli, P.; Cappella, F.; Caracciolo, V.; Cerulli, R.; Dai, C. J.; d'Angelo, A.; Di Marco, A.; He, H. L.; Incicchitti, A.; Ma, X. H.; Montecchia, F.; Sheng, X. D.; Wang, R. G.; Ye, Z. P.

2012-07-01

417

Modality-independent elastography: preliminary results  

NASA Astrophysics Data System (ADS)

The correlation between the stiffness and health of tissue is an accepted form of organ disease assessment. As a result, there has been a significant amount of interest in developing methods to image elasticity parameters (i.e. elastography). This work presents a technique that frames the elastography imaging problem within a non-rigid iterative image registration approach. Through the use of finite element modeling and mutual information, material properties are varied in order to optimize the registration between a post-compressed image and a model-generated compressed image. The results shown here demonstrate the strong connection between image similarity and appropriate tissue parameters and the algorithm's ability to detect contrast in tissue stiffness. By casting elasticity image reconstruction within the context of image similarity, the method is generalized to all forms of medical imaging.

Washington, Chad W.; Miga, Michael I.

2004-05-01

418

Recent Results from the SAMPLE Experiment  

NASA Astrophysics Data System (ADS)

The previous two SAMPLE experiments yielded a measurement of the axial e-N form factor GAe substantially different from the theoretical estimate. In order to confirm this observation, a third SAMPLE experiment was carried out at a lower beam energy of 125 MeV (Q2 = 0.038 (GeV/c)2) on a deuterium target. The data analysis is now at the final stage and the results are consistent with the theoretical prediction of the axial form factor GAe. Also, reevaluation of the background dilution factor and the electromagnetic radiative correction for the 200 MeV deuterium data lead to updated results, which are also consistent with the theoretical prediction.

Ito, Takeyasu M.

2004-02-01

419

FIFE, First ISLSCP Field Experiment - Results overview  

NASA Technical Reports Server (NTRS)

Results of the analyses of the First International Satellite Land-Surface Climatology Project Field Experiment (FIFE) are described which relate to the mass and energy flux of a particular area. The extensive satellite and ground data are used to analyze the energy balance over the FIFE site, monitor the energy-budget components, study atmospheric effects on remote sensing, examine cloud cover, and investigate fluxes in the atmospheric boundary layer. The results verify existing theories relating energy-balance components with surface biology and remote sensing, and satellites can be used to estimate surface-energy budgets. Some analyses provide data that contradict present theories regarding thermodynamic and biophysical methodologies for estimating surface-heat fluxes.

Hall, F. G.; Markham, B. J.; Wang, J. R.; Huemmerich, F.; Sellers, P. J.; Strebel, D. E.; Kanemasu, E. T.; Kelly, Robert D.; Blad, Blaine L.

1990-01-01

420

Precision Results on ?13: Measurements and Implications  

NASA Astrophysics Data System (ADS)

Over the past decade, terrestrial experiments have proven that neutrino oscillations explain the solar neutrino problem and the atmospheric neutrino anomaly. These phenomena rely on neutrino mixing between the first and second, and second and third, neutrino generations, respectively. However, other experiments put limits on mixing between the first and third generations, and suggested a rather small mixing angle ?13. In March 2012 the Daya Bay Reactor Neutrino Experiment reported a conclusive measurement of ?13, with a larger value than generally expected. This result was consistent with some earlier indications of a nonzero ?13 from T2K, MINOS, KamLAND, and Double Chooz, and was soon confirmed by RENO. This talk will present updated results from Daya Bay and other experiments, and discuss consequences for the next generation of neutrino experiments, in the US and abroad.

Napolitano, Jim

2012-10-01

421

Rapid Spacecraft Development: Results and Lessons Learned  

NASA Technical Reports Server (NTRS)

The Rapid Spacecraft Development Office (RSDO) at NASA's Goddard Space Flight Center is responsible for the management and direction of a dynamic and versatile program for the definition, competition, and acquisition of multiple indefinite delivery and indefinite quantity contracts - resulting in a catalog of spacecraft buses. Five spacecraft delivery orders have been placed by the RSDO and one spacecraft has been launched. Numerous concept and design studies have been performed, most with the intent of leading to a future spacecraft acquisition. A collection of results and lessons learned is recorded to highlight management techniques, methods and processes employed in the conduct of spacecraft acquisition. Topics include working relationships under fixed price delivery orders, price and value, risk management, contingency reserves, and information restrictions.

Watson, William A.

2002-01-01

422

Current results and trends in platform switching  

PubMed Central

The platform switching (PLS) concept was introduced in the literature in 2005. The biological benefits and clinical effectiveness of the PLS technique have been established by several studies. In this article different aspects of PLS concept are discussed. Crestal bone loss, biologic width, and stress distribution in this concept are comprehensively reviewed. In this article the relative published articles from 1990 to 2011 have been evaluated by electronic search. Because of controversial results especially in immediate loading and animal studies, further modified research is needed to establish the mechanism and effect of the PLS technique. Essential changes in studies including using the control group for accurate interpretation of results and long-term observation, particularly through, randomized, prospective, multicenter trials with large numbers of participants, and implants are necessary.

Salimi, Hadi; Savabi, Omid; Nejatidanesh, Farahnaz

2011-01-01

423

SLS-1 flight experiments preliminary significant results  

NASA Technical Reports Server (NTRS)

Spacelab Life Sciences-1 (SLS-1) is the first of a series of dedicated life sciences Spacelab missions designed to investigate the mechanisms involved in the physiological adaptation to weightlessness and the subsequent readaptation to 1 gravity (1 G). Hypotheses generated from the physiological effects observed during earlier missions led to the formulation of several integrated experiments to determine the underlying mechanisms responsible for the observed phenomena. The 18 experiments selected for flight on SLS-1 investigated the cardiovascular, cardiopulmonary, regulatory physiology, musculoskeletal, and neuroscience disciplines in both human and rodent subjects. The SLS-1 preliminary results gave insight to the mechanisms involved in the adaptation to the microgravity environment and readaptation when returning to Earth. The experimental results will be used to promote health and safety for future long duration space flights and, as in the past, will be applied to many biomedical problems encountered here on Earth.

1992-01-01

424

$W/Z$ + jets results from CDF  

SciTech Connect

The CDF Collaboration has a comprehensive program of studying the production of vector bosons, W and Z, in association with energetic jets. Excellent understanding of the standard model W/Z+jets and W/Z+c,b-jets processes is of paramount importance for the top quark physics and for the Higgs boson and many new physics searches. We review the latest CDF results on Z-boson production in association with inclusive and b-quark jets, study of the p{sub T} balance in Z+jet events, and a measurement of the W+charm production cross section. The results are based on 4-5 fb{sup -1} of data and compared to various Monte Carlo and next-to-leading order perturbative QCD predictions.

Camarda, Stefano; /Barcelona, IFAE

2010-01-01

425

Acute dystonia resulting from abrupt bupropion discontinuation.  

PubMed

Acute dystonia is commonly associated with high-potency antipsychotics. Some cases of acute dystonia had been reported to be associated with antidepressant. However, only few reported cases are related to bupropion. As reported herein, the patient with major depression suffered from acute dystonia twice, which resulted from abrupt bupropion discontinuation. The first episode occurred when medicament was shifted from bupropion to duloxetine abruptly. The patient was requested with nothing per mouth (NPO) due to panendoscopic examination. Therefore, the second one emerged after the patient was suspended from two doses of bupropion. The symptoms of dysphagia, trismus and torticollis in these two episodes were resolved after bupropion reinstitution or biperiden injection. So far as we know by our documents, this is the first report concerning an acute dystonia resulting from bupropion discontinuation. PMID:17218049

Wang, Hung-Yu; Chou, Wen-Jiun; Huang, Tsan-Yu; Hung, Chi-Fa

2007-04-13

426

Some exact results for the exclusion process  

NASA Astrophysics Data System (ADS)

The asymmetric simple exclusion process (ASEP) is a paradigm for non-equilibrium physics that appears as a building block to model various low-dimensional transport phenomena, ranging from intracellular traffic to quantum dots. We review some recent results obtained for the system on a periodic ring by using the Bethe ansatz. We show that this method allows one to derive analytically many properties of the dynamics of the model such as the spectral gap and the generating function of the current. We also discuss the solution of a generalized exclusion process with N species of particles and explain how a geometric construction inspired from queuing theory sheds light on a matrix product representation technique that has been very fruitful for deriving exact results for the ASEP.

Mallick, Kirone

2011-01-01

427

Care initiation area yields dramatic results.  

PubMed

The ED at Gaston Memorial Hospital in Gastonia, NC, has achieved dramatic results in key department metrics with a Care Initiation Area (CIA) and a physician in triage. Here's how the ED arrived at this winning solution: Leadership was trained in and implemented the Kaizen method, which eliminates redundant or inefficient process steps. Simulation software helped determine additional space needed by analyzing arrival patterns and other key data. After only two days of meetings, new ideas were implemented and tested. PMID:19275059

2009-03-01

428

SALTSTONE MATRIX CHARACTERIZATION AND STADIUM SIMULATION RESULTS  

Microsoft Academic Search

SIMCO Technologies, Inc. was contracted to evaluate the durability of the saltstone matrix material and to measure saltstone transport properties. This information will be used to: (1) Parameterize the STADIUM{reg_sign} service life code, (2) Predict the leach rate (degradation rate) for the saltstone matrix over 10,000 years using the STADIUM{reg_sign} concrete service life code, and (3) Validate the modeled results

Langton

2009-01-01

429

Results on angular correlations with ALICE  

NASA Astrophysics Data System (ADS)

Angular correlations are a sensitive probe of the transport properties of the system produced in nucleus-nucleus collisions. Similar studies performed in p-Pb collisions have recently revealed intriguing features as well. In this article, we review the latest results on charged and identified particle correlations obtained with the ALICE detector at the LHC in both Pb-Pb and p-Pb events.

Christakoglou, Panos; Alice Collaboration

2014-05-01

430

Results from the BRAHMS experiment at RHIC  

Microsoft Academic Search

We present the results from the BRAHMS experiment at the Relativistic Heavy Ion Collider (RHIC) for the 197Au + 197Au reaction at &surd; {sNN} = 130 GeV and &surd; {sNN} = 200 GeV. The main focus is here on the determination of the pseudorapidity distribution of charged particles produced in the reaction as a function of pseudorapidity and centrality and

F. Videbaek; I. G. Bearden; C. Besliu; Y. Blyakhman; J. Brzychczyk; C. Chasman; C. H. Christensen; P. Christiansen; E. Enger; J. J. Gaardhoje; J. J. Gaardhøje; M. Germinario; K. Grotowski; A. K. Holme; O. Hansen; E. Jakobsen; J. I. Jordre; C. E. Jorgensen; R. Karabowicz; T. Keutgen; C. E. Jørgensen; T. M. Larsen; T. Kozik; G. Lovhoiden; Z. Majka; G. Løvhøiden; B. McBreen; M. Mikelsen; J. Natowitz; B. S. Nielsen; K. Olchanski; J. Olness; D. Ouerdane; R. Planeta; F. Rami; D. Röhrich; D. Roehrich; D. Sandberg; S. J. Sanders; R. A. Sheetz; T. F. Thorsteinsen; F. Videbæk; A. Wieloch; I. S. Zgura

2002-01-01

431

Digital Array Scanned Interferometer: Sensors And Results  

NASA Technical Reports Server (NTRS)

Digital Array Scanned Interferometers (DASI), blend characteristics of a grating spectrometer and a two-beam interferometer for acquisition of hyperspectra. DASIs possess field widened capabilities that permit very high throughput. Aspects of DASI design, hyperspectra and data processing methods are presented. In particular, we provide data showing the important result that photon noise limited hyperspectra are achievable for DASI data acquired with a variety of FPAs.

Smith, William Hyaden; Hammer, Philip D.; Peterson, David L. (Technical Monitor)

1995-01-01

432

Recent results from SPEAR. [Theta resonance  

SciTech Connect

The first part of this talk is an experimental review of the properties of the THETA meson. Results or upper limits come from radiative j/psi decays and ..gamma gamma.. scattering for the final states eta eta, ..pi pi.., K anti K and rho rho. In the second part, an upper limit is given for the production of low-mass particles in radiative J/psi decays. Constraints for the existence of low-mass gluonic and Higgs mesons are derived.

Wacker, K.

1983-09-01

433

MAPS hybrid formal qualification performance test results  

Microsoft Academic Search

This paper presents the formal qualification test-performance (FQT-P) results of the Modular Azimuth Position System Hybrid (MAPSH) program. The MAPSH land navigation and orientation system consists of the Honeywell dynamic reference unit-hybrid, the precision lightweight GPS receiver (PLGR), the vehicle motion sensor, and a system unique control and display unit. The MAPSH program is being developed by the US Army

M. D. Slama; B. E. Fly

1996-01-01

434

Radiation test results on TK 1024 CCDs  

NASA Technical Reports Server (NTRS)

Results are presented from tests on TK 1024 CCDs with a multipinned phase (MPP) implant built into an experiental mask set. The average dark current as a function of temperature increased by a factor of about 3 for the 5 krads of gammas, which is a 10-fold increase for the extra 2 krads of protons. Histograms of the dark current show two types of dark current, an average level change, and dark current spikes.

Delamere, Alan; Murata-Seawalt, Debbie; Orbock, Jeff; Blouke, Morley; Fowler, Walt; Rebar, Frank

1990-01-01

435

Recent Results from Fermilab E690  

SciTech Connect

Partial wave analysis results of centrally produced mesons in the reaction pp {yields} P{sub slow}(X)P{sub fast}, with 800 GeV/c protons incident on a liquid hydrogen target are presented. In the reactions considered in this paper the (X) system decays into: a) K{sup 0}{sub s}K{sup {+-}}{pi}{sup {-+}}, b) K{sub s}K{sub s}, and c) {pi}{sup +}{pi}{sup -}.

Berisso, M.C. [Massachusetts Univ., Amherst, MA (United States); Christian, D.C.; Felix, J. [Guanajuato Univ. (Mexico); Gara, A.; Gottschalk, E. [Columbia Univ., New York, NY (United States); Gutierrez, G.; Hartouni, E.P. [Massachusetts Univ., Amherst, MA (United States); Knapp, B.C. [Columbia Univ., New York, NY (United States); Kreisler, M.N. [Massachusetts Univ., Amherst, MA (United States); Lee, S. [Massachusetts Univ., Amherst, MA (United States); Markianos, K. [Massachusetts Univ., Amherst, MA (United States); Moreno, G. [Guanajuato Univ. (Mexico); Reyes, M.A. [Guanajuato Univ. (Mexico); Sosa, M.; Wang, M.H.L.S. [Massachusetts Univ., Amherst, MA (United States); Wehmann, A.; Wesson, D. [Massachusetts Univ., Amherst, MA (United States)

1998-01-01

436

Five-Factor Screener: Validation Results  

Cancer.gov

These validation results suggest that dietary exposure estimates computed for the 2005 NHIS Cancer Control Supplement (CCS) may be useful to compare subgroup means, especially for populations consuming mainstream diets. The estimates may be less useful for populations with more ethnic diets, including Asian and possibly Latino populations. Although significant error may be associated with these estimates of diet, we believe the exposure estimates still substantially reflect what individuals are actually consuming.

437

Results from the final focus test beam  

SciTech Connect

first experimental results from the Final Focus Test Beam (FFTB) are given in this report. The FFTB has been constructed as a prototype for the final focus system of a future TeV-scale electron-positron linear collider. The vertical dimension of the 47 GeV electron beam form the SLAC linac has been reduced at the focal point of the FFTB by a demagnification of 320 to a beam height of approximately 70 nanometers.

Burke, D.L.; Final Focus Test Beam Collaboration

1994-07-01

438

Peptide bioregulation of aging: results and prospects  

Microsoft Academic Search

The review comprises the results of author’s long-term investigation in the mechanisms of aging and a role of peptide bioregulators\\u000a in prevention of age-related pathology. A number of small peptides have been isolated from different organs and tissues and\\u000a their analogues (di-, tri-, tetrapeptides) were synthesized from the amino acids. It was shown that long-term treatment with\\u000a some peptide preparations

Vladimir N. AnisimovVladimir; Vladimir Kh. Khavinson

2010-01-01

439

Results on underwater mosaic-based navigation  

Microsoft Academic Search

This paper presents results on mosaic-based visual navigation of an underwater autonomous vehicle, navigating close to the sea floor. A high-quality video-mosaic is automatically built to be used as a representation of the environment. A visual servoing strategy is adopted to drive the vehicle along a specified trajectory (indicated by way-points) relative to the mosaic. The control errors are defined

Nuno Gracias; Sjoerd van der Zwaan; Alexandre Bernardino; Jose Santos-Victor

2002-01-01

440

Backfilling of cavities resulting from borehole mining  

SciTech Connect

Backfilling techniques are described which reduce possible damage to the environment caused by either the cavities or the piles of sand tailings that result from in-borehole hydraulic mining. Water filled cavities at the bottom of boreholes are rapidly and economically backfilled by jetting a sand-tailings slurry underwater. The backfilling technique was first field tested and found to be successful following borehole mining of uranium ore at Rocky Mountain Energy Company's Nine Mile Lake site in Natrona County, Wyoming.

Not Available

1981-03-01

441

Containment performance perspectives based on IPE results  

SciTech Connect

Perspectives on Containment Performance were obtained from the accident progression analyses, i.e. level 2 PRA analyses, found in the IPE submittals. Insights related to the containment failure modes, the releases associated with those failure modes, and the factors responsible for the types of containment failures and release sizes reported were gathered. The results summarized here are discussed in detail in volumes 1 and 2 of NUREG 1560. 3 refs., 4 figs.

Lehner, J.R.; Lin, C.C.; Pratt, W.T. [and others

1996-12-31

442

Results from 2010 Caliban Criticality Dosimetry Intercomparison  

SciTech Connect

The external dosimetry program participated in a criticality dosimetry intercomparison conducted at the Caliban facility in Valduc, France in 2010. Representatives from the dosimetry and instrumentation groups were present during testing which included irradiations of whole-body beta/gamma (HBGT) and neutron thermoluminescent dosimeters (TLDs), a fixed nuclear accident dosimeter (FNAD), electronic alarming dosimeters, and a humanoid phantom filled with reference man concentrations of sodium. This report reviews the testing procedures, preparations, irradiations, and presents results of the tests.

Veinot, K. G.

2011-10-12

443

Capture cavity II results at FNAL  

SciTech Connect

As part of the research and development towards the International Linear Collider (ILC), several test facilities have been developed at Fermilab. This paper presents the latest Low Level RF (LLRF) results obtained with Capture Cavity II (CCII) at the ILC Test Accelerator (ILCTA) test facility. The main focus will be on controls and RF operations using the SIMCON based LLRF system developed in DESY [1]. Details about hardware upgrades and future work will be discussed.

Branlard, Julien; Chase, Brian; Cancelo, G.; Carcagno, R.; Edwards, H.; Fliller, R.; Hanna, B.; Harms, Elvan; Hocker, A.; Koeth, T.; Kucera, M.; /Fermilab

2007-06-01

444

The WEGA Stellarator: Results and Prospects  

SciTech Connect

In this article an overview is given on results from magnetic flux surface measurements, applied ECR heating scenarios for 2.45 GHz and 28 GHz, fluctuation and transport studies and plasma edge biasing experiments performed in the WEGA stellarator. Examples for the development of new diagnostics and the machine control system are given that will be used at Wendelstein 7-X stellarator, which is currently under construction in Greifswald.

Otte, M.; Andruczyk, D.; Koenig, R.; Laqua, H. P.; Lischtschenko, O.; Marsen, S.; Schacht, J.; Podoba, Y. Y.; Wagner, F.; Warr, G. B. [Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, TI Greifswald, D-17491 Greifswald (Germany); Holzhauer, E. [Institut fuer Plasmaforschung, Universitaet Stuttgart, Pfaffenwaldring 31, D-70569 Stuttgart (Germany); Howard, J. [Plasma Research Laboratory, Research School of Physical Sciences and Engineering, ANU, Canberra, ACT 0200 (Australia); Krupnik, L.; Zhezhera, A. [Kharkov Institute of Plasma Physics, Kharkov (Ukraine); Urban, J.; Preinhalter, J. [Institute of Plasma Physics, EURATOM/IPP.CR Association, 182 21 Prague (Czech Republic)

2008-03-19

445

Preliminary Results on ?? Photoproduction at Graal  

NASA Astrophysics Data System (ADS)

The ?p ? ??p reaction was studied near the threshold, in the 1.44 GeV> E? < 1.55GeV energy range with the tagged photons of the former GRAAL experiment. The two neutral decays ??(?i/? = 2.10 ± 0.12%) and ?0?0?(?i/? = 20.7 ± 1.2%) were analized and preliminary results of the beam asymmetry were extracted together with the invariant masses.

Manganaro, M.; Bellini, V.; Bocquet, J. P.; Casano, L.; D'Angelo, A.; di Salvo, R.; Fantini, A.; Franco, D.; Gervino, G.; Ghio, F.; Giardina, G.; Giusa, A.; Girolami, B.; Ignatov, A. S.; Lapik, A. M.; Levi Sandri, P.; Lleres, A.; Mammoliti, F.; Mandaglio, G.; Moricciani, D.; Mushkarenkov, A. N.; Nedorezov, V. G.; Randieri, C.; Rebreyend, D.; Rudnev, N. V.; Russo, G.; Schaerf, C.; Sperduto, M. L.; Sutera, M. C.; Turinge, A.; Vegna, V.

446

CHAMP Tracking and Accelerometer Data Analysis Results  

NASA Technical Reports Server (NTRS)

The CHAMP (Challenging Minisatellite Payload) mission's unique combination of sensors and orbit configuration will enable unprecedented improvements in modeling and understanding the Earth's static gravity field and its temporal variations. CHAMP is the first of two missions (GRACE (Gravity Recovery and Climate Experiment) to be launched in the later part of '01) that combine a new generation of GPS (Global Positioning System) receivers, a high precision three axis accelerometer, and star cameras for the precision attitude determination. In order to isolate the gravity signal for science investigations, it is necessary to perform a detailed reduction and analysis of the GPS and SLR tracking data in conjunction with the accelerometer and attitude data. Precision orbit determination based on the GPS and SLR (Satellite Laser Ranging) tracking data will isolate the orbit perturbations, while the accelerometer data will be used to distinguish the surface forces from those due to the geopotential (static, and time varying). In preparation for the CHAMP and GRACE missions, extensive modifications have been made to NASA/GSFC's GEODYN orbit determination software to enable the simultaneous reduction of spacecraft tracking (e.g. GPS and SLR), three axis accelerometer and precise attitude data. Several weeks of CHAMP tracking and accelerometer data have been analyzed and the results will be presented. Precision orbit determination analysis based on tracking data alone in addition to results based on the simultaneous reduction of tracking and accelerometer data will be discussed. Results from a calibration of the accelerometer will be presented along with the results from various orbit determination strategies. Gravity field modeling status and plans will be discussed.

Lemoine, Frank G.; Luthcke, S. B.; Rowlands, D. D.; Pavlis, D. E.; Colombo, O. L.; Ray, Richard D.; Thompson, B.; Nerem, R. S.; Williams, Teresa A.; Smith, David E. (Technical Monitor)

2002-01-01

447

Validation Results for LEWICE 3.0  

NASA Technical Reports Server (NTRS)

A research project is underway at NASA Glenn to produce computer software that can accurately predict ice growth under any meteorological conditions for any aircraft surface. This report will present results from version 3.0 of this software, which is called LEWICE. This version differs from previous releases in that it incorporates additional thermal analysis capabilities, a pneumatic boot model, interfaces to computational fluid dynamics (CFD) flow solvers and has an empirical model for the supercooled large droplet (SLD) regime. An extensive comparison of the results in a quantifiable manner against the database of ice shapes and collection efficiency that have been generated in the NASA Glenn Icing Research Tunnel (IRT) has also been performed. The complete set of data used for this comparison will eventually be available in a contractor report. This paper will show the differences in collection efficiency between LEWICE 3.0 and experimental data. Due to the large amount of validation data available, a separate report is planned for ice shape comparison. This report will first describe the LEWICE 3.0 model for water collection. A semi-empirical approach was used to incorporate first order physical effects of large droplet phenomena into icing software. Comparisons are then made to every single element two-dimensional case in the water collection database. Each condition was run using the following five assumptions: 1) potential flow, no splashing; 2) potential flow, no splashing with 21 bin drop size distributions and a lift correction (angle of attack adjustment); 3) potential flow, with splashing; 4) Navier-Stokes, no splashing; and 5) Navier-Stokes, with splashing. Quantitative comparisons are shown for impingement limit, maximum water catch, and total collection efficiency. The results show that the predicted results are within the accuracy limits of the experimental data for the majority of cases.

Wright, William B.

2005-01-01

448

Computing with Membranes (P Systems): Universality Results  

Microsoft Academic Search

This is a survey of universality results in the area of Membrane Computing (P systems), at the level of December 20001. We consider both P systems with symbol-objects and with string-objects; in the latter case, we consider systems based on\\u000a rewriting, splicing, as well as rewriting together with other operations (replication, crossingover), with sets or with multisets\\u000a of strings. Besides

Carlos Martín-vide; Gheorghe Paun

2001-01-01

449

New QCD results from string theory  

SciTech Connect

We discuss new results in QCD obtained with string-based methods. These methods were originally derived from superstring theory and are significantly more efficient than conventional Feynman rules. This technology was a key ingredient in the first calculation of the one-loop five-gluon amplitude. We also present a conjecture for a particular one-loop helicity amplitude with an arbitrary number of external gluons.

Bern, Z. [California Univ., Los Angeles, CA (United States). Dept. of Physics; Dixon, L. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Kosower, D.A. [CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France). Service de Physique Theorique

1993-11-01

450

Results from Plasma Wakefield Experiments at FACET  

Microsoft Academic Search

We report initial results of the Plasma Wakefield Acceleration (PWFA) Experiments performed at FACET - Facility for Advanced aCcelertor Experimental Tests at SLAC National Accelerator Laboratory. At FACET a 23 GeV electron beam with 1.8 x 10¹° electrons is compressed to 20 m longitudinally and focused down to 10 m x 10 m transverse spot size for user driven experiments.

S. Z. Li; C. I. Clarke; R. J. England; J. Frederico; S. J. Gessner; M. J. Hogan; R. K. Jobe; M. D. Litos; D. R. Walz; P. Muggli; W. An; C. E. Clayton; C. Joshi; W. Lu; K. A. Marsh; W. Mori; S. Tochitsky; E. Adli

2011-01-01

451

Status and results from the RAVE survey  

NASA Astrophysics Data System (ADS)

RAVE, the RAdial Velocity Experiment, is a large spectroscopic survey which collects spectroscopic data for stars in the southern hemisphere. RAVE uses the AAO Schmidt telescope with a wavelength coverage similar to Gaia but a lower resolution of R = 7,500. Since 2003, RAVE collected over 500 000 spectra providing an unprecedented dataset to study the structure and kinematics of the Milky Way and its stellar populations. In this review, we will summarize the main results obtained using the RAVE catalogues.

Siebert, A.

2012-12-01

452

Clinical Results of an Autologous Engineered Skin  

Microsoft Academic Search

Introduction: An artificial complete skin (dermis and epidermis) model has been developed in the Tissue engineering unit of the Centro\\u000a Comunitario de Sangre y Tejidos del Principado de Asturias (CCST) and CIEMAT. This engineered skin has been employed for the\\u000a treatment of severe epithelial injuries. In this paper, the clinical results obtained with this engineered skin during the\\u000a last 18 months

Sara Llames; Eva García; Verónica García; Marcela del Río; Fernando Larcher; Jose Luis Jorcano; Eva López; Purificación Holguín; Francisca Miralles; Jesús Otero; Alvaro Meana

2006-01-01

453

New MiniBooNE Results  

SciTech Connect

The MiniBooNE experiment at Fermilab was designed to be a definitive test of the LSND evidence for neutrino oscillations and has recently reported first results of a search for electron-neutrino appearance in a muon-neutrino Booster beam. No significant excess of events was observed at higher energies, but a sizable excess of events was observed at lower energies. The lack of the excess at higher energies allowed MiniBooNE to rule out simple two-neutrino oscillations as an explanation of the LSND signal. However, the excess at lower energies is presently unexplained. A new data set of neutrinos from the NuMI beam line measured with the MiniBooNE detector at Fermilab has been analyzed. The measurement of NuMI neutrino interactions in MiniBooNE provide a clear proof-of-principle of the off-axis beam concept that is planned to be used by future neutrino experiments such as T2K and NOvA. Moreover, it complements the first oscillation results and will help to determine whether the lower-energy excess is due to background or to new physics. New results from the re-analysis of low energy excess from the Booster beam line and the results from measurements of neutrino interactions from NuMI beam line are discussed. MiniBooNE observes an unexplained excess of 128.8 {+-} 20.4 {+-} 38.3 electron-like events in the energy region 200 < E{sub {nu}} < 475 MeV. The NuMI data sample currently has a large systematic errors associated with {nu}{sub e} events, but shows an indication of an excess.

Djurcic, Zelimir; /Columbia U.

2009-01-01

454

Launch vehicle aerodynamic flight test results  

NASA Technical Reports Server (NTRS)

The aerodynamic flight test procedures and results for the Space Shuttle orbiter are presented. The aerodynamic characteristics used in testing were determined from flights STS-1 and through STS-4. Normal force and pitching moment were different than predicted, suggesting an unanticipated aerodynamic force acting upward on the end of the orbiter. However, lateral-directional aerodynamic characteristics were in good management with good predictions. The flight measured aerodynamics are repeatable and show good correlation with angle of attack and angle of sideslip.

Gaines, L. M.; Osborn, W. L.; Wiltse, P. D.

1983-01-01

455

Charm hadroproduction results from Fermilab E-400  

Microsoft Academic Search

Results are presented from Fermilab E-400 on the production of charmed baryons and mesons at a mean energy of 640 GeV. We show evidence for the charm-strange baryon, Xic+, and present our measurements of its mass, width, lifetime, cross section and relative branching fractions, and the A, xif, pt, and particle\\/antiparticle dependence of the state. We show evidence for both

P. Coteus; M. Binkley; F. Bossi; J. Butler; J. P. Cumalat; M. Dicorato; M. Diesburg; J. Enagonio; J. Filaseta; P. L. Frabetti; I. Gaines; P. Garbincius; M. Gormley; J. Haggerty; D. Harding; T. Kroc; R. Ladbury; P. Lebrun; P. F. Manfredi; J. Peoples; A. Sala; C. Shipbaugh; J. Slaughter; J. Wiss

1988-01-01

456

First results obtained by RUNJOB campaign  

Microsoft Academic Search

We report experimental results obtained by using a wide-gap type emulsion chamber flown in the first Japanese-Russo joint balloon project, called RUNJOB (RUssia-Nippon JOint Balloon-program). Two balloons were launched from Kamchatka in July 1995, and both were recovered successfully near the Volga River. The exposure time was 130 hours for the first flight and 168 hours for the second. The

E. Kamioka; A. V. Apanasenko; V. A. Berezovskaya; M. Fujii; T. Fukuda; M. Hareyama; G. Hashimoto; M. Ichimura; T. Kobayashi; V. Kopenkin; S. Kuramata; V. I. Lapshin; A. K. Managadze; H. Matsutani; N. P. Misnikova; T. Misu; R. A. Mukhamedshin; A. Nakamura; M. Namiki; H. Nanjo; S. I. Nikolsky; K. Ogura; S. Ohta; D. S. Oshuev; P. A. Publichencko; I. V. Rakobolskaya; T. M. Roganova; G. P. Sazhina; H. Semba; T. Shibata; T. Shiota; H. Sugimoto; L. G. Sveshnikova; V. M. Taran; Z. Watanabe; N. Yajima; T. Yamagami; I. V. Yashin; E. A. Zamchalova; G. T. Zatsepin; I. S. Zayarnaya

2000-01-01

457

First results from THEMIS spectropolarimetric mode  

NASA Astrophysics Data System (ADS)

We present here the very first spectropolarimetric results obtained with the multiline spectroscopy mode (MTR) of THEMIS. The principal problems found during the data analysis are exposed. A first characterisation of the quality of this observing mode is given. Based on observations made with THEMIS operated on the island of Tenerife by CNRS-CNR in the Spanish Observatorio del Teide of the Instituto de Astrofísica de Canarias.

López Ariste, A.; Rayrole, J.; Semel, M.

2000-02-01

458

The WEGA Stellarator: Results and Prospects  

NASA Astrophysics Data System (ADS)

In this article an overview is given on results from magnetic flux surface measurements, applied ECR heating scenarios for 2.45 GHz and 28 GHz, fluctuation and transport studies and plasma edge biasing experiments performed in the WEGA stellarator. Examples for the development of new diagnostics and the machine control system are given that will be used at Wendelstein 7-X stellarator, which is currently under construction in Greifswald.

Otte, M.; Andruczyk, D.; Holzhauer, E.; Howard, J.; König, R.; Krupnik, L.; Laqua, H. P.; Lischtschenko, O.; Marsen, S.; Schacht, J.; Urban, J.; Podoba, Y. Y.; Preinhalter, J.; Wagner, F.; Warr, G. B.; Zhezhera, A.

2008-03-01

459

Recent results on SN 1987A  

NASA Technical Reports Server (NTRS)

The results from observational studies of SN 1987A are reviewed. The evolution of the blue supergiant pre-supernova star is examined, including the composition and core structure of the star and nitrogen enhancements. The study of heavy elements and isotopes in the ejecta is discussed. Also, consideration is given to possible mixing of supernova composition in velocity space, the profiles of observed IR lines and their red-shifted wings, and the question of what happened to the neutron star.

Woosley, S. E.; Pinto, P. A.; Weaver, T. A.

1988-01-01

460

Results of the ACRR-DFR experiments  

Microsoft Academic Search

Results of the ongoing series of in-pile severe fuel damage and relocation experiments, the DFR series, are presented. A complete analysis of the DF-1 and DF-2 experiments, which address the effects of initial clad oxidation state on subsequent severe damage progression, has been completed. The DF-3 experiment investigating the effects of a Cd-In-Ag control rod on the damage process has

K. O. Reil; A. C. Marshall; R. O. Gauntt; R. W. Ostensen; P. S. Pickard; C. Fryer; K. T. Stalker; K. Muramatsu

1985-01-01

461

Cosmological Results from High-z Supernovae  

Microsoft Academic Search

The High-z Supernova Search Team has discovered and observed eight new supernovae in the redshift interval z=0.3-1.2. These independent observations, analyzed by similar but distinct methods, confirm the results of Riess and Perlmutter and coworkers that supernova luminosity distances imply an accelerating universe. More importantly, they extend the redshift range of consistently observed Type Ia supernovae (SNe Ia) to z~1,

John L. Tonry; Brian P. Schmidt; Brian Barris; Pablo Candia; Peter Challis; Alejandro Clocchiatti; Alison L. Coil; Alexei V. Filippenko; Peter Garnavich; Craig Hogan; Stephen T. Holland; Saurabh Jha; Robert P. Kirshner; Kevin Krisciunas; Bruno Leibundgut; Weidong Li; Thomas Matheson; Mark M. Phillips; Adam G. Riess; Robert Schommer; R. Chris Smith; Jesper Sollerman; Jason Spyromilio; Christopher W. Stubbs; Nicholas B. Suntzeff

2003-01-01

462

Test results of a prototype dielectric microcalorimeter  

NASA Technical Reports Server (NTRS)

The initial development work on a dielectric microcalorimeter is presented. It focuses on the dielectric properties of the ferroelectric material KTa(1-x)Nb(x)O3 (KTN). Measurements of the temperature dependent dielectric constant are given together with the first alpha particle detection results from a prototype composite microcalorimeter operating at 1.3 K. A nonthermal mechanism for detecting 6 MeV alpha particles in a monolithic KTN sample is also reported.

Pfafman, T. E.; Silver, E.; Labov, S.; Beeman, J.; Goulding, F.; Hansen, W.; Landis, D.; Madden, N.

1990-01-01

463

Solar rotation results at Mount Wilson  

NASA Technical Reports Server (NTRS)

Solar rotation results from Doppler velocity measurements made at Mount Wilson over a period of more than 14 years are presented based on a single reduction procedure. The observations were made with the wavelength 5250.2 A line of Fe I, and wavelength shifts of the line were simultaneously recorded. Data from 188 rotations are presented. Measurements of scattered light along with its effect on the measured rotation rate are given.

Howard, R.; Adkins, J. M.; Boyden, J. E.; Cragg, T. A.; Gregory, T. S.; Labonte, B. J.; Padilla, S. P.; Webster, L.

1983-01-01

464

Applications and results of MODIS lunar observations  

NASA Astrophysics Data System (ADS)

Since launch, both Terra and Aqua MODIS have been making regular lunar observations with a primary objective of providing an independent stability monitoring for the reflective solar bands (RSB) calibration. To a large extent, this approach is based on the fact that the Moon has extremely stable surface reflectance properties. When combined with a lunar radiometric model, the applications of lunar observations can be significantly enhanced. Using MODIS as an example, this paper discusses various applications developed from its lunar observations. In addition to the RSB stability monitoring, MODIS lunar observations are regularly used to examine its calibration consistency between Terra and Aqua MODIS and to track the sensor's band-to-band registration (BBR) stability. Examples also presented in this paper include optical leak and electronic crosstalk characterization for MODIS thermal emissive bands (TEB) and shortwave infrared (SWIR) bands. Results from multi-year lunar observations show that the MODIS RSB calibration stability has been satisfactory when compared to its solar calibration, and that Terra and Aqua MODIS are calibrated consistently to within +/-1% for most RSB. The spatial characterization results derived from MODIS lunar observations agree very well with that determined from its on-board calibrator. It is clear that the applications and results of MODIS lunar observations presented here will serve as good examples or references for other sensors that also make use of lunar surface observations.

Xiong, X.; Sun, J.; Angal, A.; Chiang, K.; Barnes, W. L.

2007-10-01

465

Solid Surface Combustion Experiment: Thick Fuel Results  

NASA Technical Reports Server (NTRS)

The results of experiments for spread over polymethylmethacrylate, PMMA, samples in the microgravity environment of the Space Shuttle are described. The results are coupled with modelling in an effort to describe the physics of the spread process for thick fuels in a quiescent, microgravity environment and uncover differences between thin and thick fuels. A quenching phenomenon not present for thin fuels is delineated, namely the fact that for thick fuels the possibility exists that, absent an opposing flow of sufficient strength to press the flame close enough to the fuel surface to allow the heated layer in the solid to develop, the heated layer fails to become 'fully developed.' The result is that the flame slows, which in turn causes an increase in the relative radiative loss from the flame, leading eventually to extinction. This potential inability of a thick fuel to develop a steady spread rate is not present for a thin fuel because the heated layer is the fuel thickness, which reaches a uniform temperature across the thickness relatively rapidly.

Altenkirch, Robert A.; Bhattacharjee, Subrata; West, Jeff; Tang, Lin; Sacksteder, Kurt; Delichatsios, Michael A.

1997-01-01

466

Recent Results of the CMS Experiment  

NASA Astrophysics Data System (ADS)

The CMS experiment obtained a large number of groundbreaking results from the analysis of 7- and 8-TeV proton-proton collisions produced so far by the Large Hadron Collider at CERN. In this brief summary only a sample of those results will be discussed. A new particle with mass mH = 125.3 ± 0.4(stat.) ± 0.5(syst.) GeV and characteristics compatible with those expected for a standard model Higgs boson has been observed in its decays to photon pairs, WW pairs, and ZZ pairs. Searches for the rare decays Bd ? µµ and Bs ? µµ have allowed to set limits on the branching fractions which are close to standard model predictions, strongly constraining new physics models. The top quark has been studied with great detail, obtaining among other results the world's best measurement of its mass as Mt = 173.49 ± 0.43(stat. + JES ) ± 0.98(syst.) GeV. New physics models have been strongly constrained with the available data.

Dorigo, Tommaso

2014-04-01

467

Foreword: Unperformed Experiments Have No Results  

NASA Astrophysics Data System (ADS)

This year in Växjö we thought we would try an experiment-it felt high time for a new result. Much of the foundations discussion of previous years has focussed on EPR-style arguments and the meaning and experimental validity of various Bell inequality violations. Yet, there is another pillar of the quantum foundations puzzle that has hardly received any attention in our great series of meetings: It is the phenomenon first demonstrated by Kochen and Specker, quantum contextuality. Recently there has been a rapid growth of activity aimed toward better understanding this aspect of quantum mechanics, which Asher Peres sloganized by the phrase, ``unperformed experiments have no results.'' Below is a sampling of some important papers on the topic for the reader not yet familiar with the subject. What is the source of this phenomenon? Does it depend only on high level features of quantum mechanics, or is it deep in the conceptual framework on which the theory rests? Might it, for instance, arise from the way quantum mechanics amends the classic laws of probability? What are the mathematically simplest ways contextuality can be demonstrated? How might the known results be made amenable to experimental tests? These were the sorts of discussions we hoped the session would foster.

Fuchs, C. A.; Larsson, J.-Å.

2009-03-01

468

Spacelab Science Results Study: Executive Summary  

NASA Technical Reports Server (NTRS)

Beginning with OSTA-1 in November 1981, and ending with Neurolab in March 1998, thirty-six shuttle missions are considered Spacelab missions because they carried various Spacelab components such as the Spacelab module, the pallet, the Instrument Pointing System (IPS), or the MPESS. The experiments carried out during these flights included astrophysics, solar physics, plasma physics, atmospheric science, Earth observations, and a wide range of microgravity experiments in life sciences, biotechnology, materials science, and fluid physics which includes combustion and critical point phenomena. In all, some 764 experiments were conducted by investigators from the United States, Europe, and Japan. These experiments resulted in several thousand papers published In refereed journals, and thousands more in conference proceedings, chapters in books, and other publications. The purpose of this Spacelab Science Results Study is to document the contributions made in each of the major research areas by giving a brief synopsis of the more significant experiments and an extensive list of the publications that were produced. We have also endeavored to show how these results impacted the existing body of knowledge, where they have spawned new fields, and, if appropriate, where the knowledge they produced has been applied.

Naumann, Robert J. (Editor)

1999-01-01

469

Personalized genomic results: analysis of informational needs.  

PubMed

Use of genomic information in healthcare is increasing; however data on the needs of consumers of genomic information is limited. The Coriell Personalized Medicine Collaborative (CPMC) is a longitudinal study investigating the utility of personalized medicine. Participants receive results reflecting risk of common complex conditions and drug-gene pairs deemed actionable by an external review board. To explore the needs of individuals receiving genomic information we reviewed all genetic counseling sessions with CPMC participants. A retrospective qualitative review of notes from 157 genetic counseling inquiries was conducted. Notes were coded for salient themes. Five primary themes; "understanding risk", "basic genetics", "complex disease genetics", "what do I do now?" and "other" were identified. Further review revealed that participants had difficulty with basic genetic concepts, confused relative and absolute risks, and attributed too high a risk burden to individual single nucleotide polymorphisms (SNPs). Despite these hurdles, counseled participants recognized that behavior changes could potentially mitigate risk and there were few comments alluding to an overly deterministic or fatalistic interpretation of results. Participants appeared to recognize the multifactorial nature of the diseases for which results were provided; however education to understand the complexities of genomic risk information was often needed. PMID:24488620

Schmidlen, Tara J; Wawak, Lisa; Kasper, Rachel; García-España, J Felipe; Christman, Michael F; Gordon, Erynn S

2014-08-01

470

Recent Electroweak Results from SLC/SLD  

SciTech Connect

Key electroweak measurements performed by the SLD collaboration at the SLC are described and recent results given. The left-right cross-section asymmetry, A{sub LR}, has been updated to include the 1996 data. It remains the single most precise measurement of sin{sup 2} {theta}{sub W}{sup eff}, and it is compared to the LEP results. The polarized differential cross section for b-quarks is measured and is used to perform a unique direct measurement of the parity violation parameter for b quarks, A{sub b}. The excellent capability to perform secondary vertexing at SLC with CCD-based vertex detectors is described, including first physics results with the new detector VXD3. The vertexing is used to full advantage to make a highly pure B tag to measure the fraction of hadronic Z{sup 0} decays going to b quarks, R{sub b}. The vertexing, in combination with electron-beam polarization, is used to measure B{sub d}{sup 0} mixing. The prospects for making a B{sub s}{sup 0} mixing measurement are excellent given good SLC performance in the upcoming SLC run(s).

Frey, Raymond

2003-06-06

471

Final results of the Austrian Radon Project.  

PubMed

The Austrian Radon Project started in 1992 and ended in 2001. The Austrian Radon Project had two aims: firstly, finding areas of enhanced indoor radon concentration for future radon mitigations, and, secondly, defining areas with elevated radon risk where radon safe construction is necessary for new houses. The project was based on systematic indoor measurements in randomly selected houses using different types of detectors. Successful intercomparison tests were made in a radon chamber, but simultaneous measurements by different detectors normally used in homes deviated sometimes up to a factor of two. We have to assume that this results from manipulations of the detectors by the inhabitants. The mean radon concentration in Austrian homes was found to be 99 Bq m(-3). A radon potential was derived from the results of the measurements and the information received from questionnaires. This radon potential was defined as an expected radon concentration in a standard situation and characterizes the radon risk from ground sources with all the influences of different living situations eliminated. A mean radon potential was computed for every municipality and the information is displayed as a map. The uncertainty and the reliability of the classification of municipalities according to the radon potential are discussed in more detail and compared with results from Switzerland. PMID:16155455

Friedmann, Harry

2005-10-01

472

Deuteron photodisintegration : new results from TJNAF.  

SciTech Connect

The first measurements of the differential cross section from d({gamma},p)n up to 4.0 GeV were performed at the Thomas Jefferson National Accelerator Facility (TJNAF, formerly CEBAF). Bremsstrahlung photons from electron beam impinging on a copper radiator and a liquid deuterium target were employed for this experiment. The experiment was performed in Hall C where the photoprotons at forward angles in the center-of-mass were detected in the High Momentum Spectrometer (HMS) and photoprotons at backward angles were detected in the Short Orbit Spectrometer (SOS). The bremsstrahlung photon energy was reconstructed from the measured proton momentum and angle using the two-body kinematics. We report the cross section results at the proton center-of-mass angles of 37{degree} and 90{degree}. These results are in good agreement with previous lower energy measurements. The 90{degree} data continue to show the constituent-counting-rule behavior up to 4 GeV. The results will be compared with models based on QCD as well as those based on meson-exchange theory.

Abbott, D. J.; Ahmidouch, A.; Armstrong, C. S.; Arrington, J.; Cummings, W. J.; Geesaman, D. F.; Hansen, J.-O.; Jackson, H. E.; Mao, H.; O'Neill, T. G.; Potterveld, D. H.; Reinhold, J.; Zeidman, B.

1997-11-18

473

Recent Results from the SAMPLE Experiment  

NASA Astrophysics Data System (ADS)

Previously the SAMPLE collaboration measured the parity-violating asymmetry in elastic electron scattering on hydrogen and quasielastic electron scattering on deuterium at backward angles at 200 MeV at the MIT-Bates laboratory. Combining the results of these measurements allows us to separately determine the nucleon's strange magnetic form factor and the nucleon's neutral weak axial form factor. The neutral weak axial form factor as measured in electron scattering includes anapole contributions and a class of electroweak radiative corrections that are absent in neutrino scattering. The combined results from the previous two SAMPLE experiments yielded a measurement of the axial form factor substantially different from the theoretical estimate. In order to confirm this observation with a measurement that has an improved signal-to-background ratio, a new measurement of the parity-violating asymmetry in quasielastic electron scattering on deuterium at 125 MeV has been carried out. In this talk, an overview of the experiment will be presented, along with results from the new measurement.

Ito, Takeyasu

2002-04-01

474

Results from CERN experiment WA80  

SciTech Connect

The two primary goals of the WA80 collaboration are to survey nucleus-nucleus collisions at 60 and 200 GeVnucleon and to compare the results to those obtained from proton-nucleus interactions and to search for evidence that a quark-gluon plasma has been formed or that some similar phase transition has taken place. One of the ways to pursue the first goal is by means of forward and transverse energy measurements. These relate to important quantities such as the degree of nuclear stopping, the magnitude of attained energy densities, and the level at which collective effects manifest themselves. These measurements and their interpretation were discussed during the oral presentation at this meeting for both /sup 16/O- and /sup 32/S-induced reactions. Since the /sup 16/O results are now published, we present here only the preliminary unpublished /sup 32/S transverse energy distributions. In addition, we show sample results obtained with the single-arm photon spectrometer, SAPHIR, and with the Plastic Ball. 8 refs., 3 figs.

Plasil, F.; Albrecht, R.; Awes, T.C.; Baktash, C.; Beckmann, P.; Berger, F.; Bock, R.; Claesson, G.; Dragon, L.; Ferguson, R.L.

1988-01-01

475

Damage to DNA Resulting from Ionizing Radiation  

NASA Astrophysics Data System (ADS)

This work studies the mechanism by which radiation causes biological damage. In general, radiation leads to ionized molecules in solution, which can produce free radical molecules through a series of chemical reactions. These free radicals can chemically attack the DNA molecule resulting in breaks in the phosphate-sugar backbone of the molecule. The molecule may break into smaller pieces or recombine into different shapes. If the molecule were in a living cell, such damage would most likely lead to cell death. This work involves irradiating extra-cellular, non-living DNA plasmid in solution and assessing the amount of damage done to the plasmid. After irradiating the vials at various high doses ( 0.05-10 Gy), the resulting DNA fragments were analyzed via gel electrophoresis. We can therefore look at the fraction of the sample that is still intact compared to the smaller pieces that have resulted from radiation-induced strand breaks in the DNA. A better understanding of radiation and its ability to damage DNA (and kill cells) may lead to improved methods for radiation therapy. (This work was possible through the cooperation and assistance from the staff and facilities at Carolinas Hospital in Florence, SC.)

Jokisch, Derek W.; Shannon, Timothy E.; Will Quick, S.

2002-10-01

476

New results and future perspectives of THEMIS .  

NASA Astrophysics Data System (ADS)

We reported on scientific results obtained during the run of two Joint Observing Programs in 2003, 2004 concerning ``New emergence flux and active regions `` (JOP157), ``Filaments and their environment'' (JOP178) and preliminary results of more recent campaigns. Results concerning filament support show the capability of THEMIS/MTR to detect weak magnetic polarities and measure the vector magnetic field curvature. Tangent magnetic field lines to the solar surface were found at the feet of filaments and also in Halpha +/-0.35 Å bright points close to penumbra. The bright points would be not due to high magnetic field concentration (1 KG) but to magnetic reconnection. The stability of filaments could be due to the existence of constant flux in its corridor where overlying arcades are anchored. The comparison between THEMIS/MSDP and MDI shows the gain that we get. THEMIS is well adapted for measurements of weak field, the noise is much reduce compared to other instruments. For future campaigns we recommand to use alternatively the two modes: MSDP and MTR.

Schmieder, B.

477

Low Emissions RQL Flametube Combustor Test Results  

NASA Technical Reports Server (NTRS)

The overall objective of this test program was to demonstrate and evaluate the capability of the Rich-burn/Quick-mix/Lean-burn (RQL) combustor concept for HSR applications. This test program was in support of the Pratt & Whitney and GE Aircraft Engines HSR low-NOx Combustor Program. Collaborative programs with Parker Hannifin Corporation and Textron Fuel Systems resulted in the development and testing of the high-flow low-NOx rich-burn zone fuel-to-air ratio research fuel nozzles used in this test program. Based on the results obtained in this test program, several conclusions can be made: (1) The RQL tests gave low NOx and CO emissions results at conditions corresponding to HSR cruise. (2) The Textron fuel nozzle design with optimal multiple partitioning of fuel and air circuits shows potential of providing an acceptable uniform local fuel-rich region in the rich burner. (3) For the parameters studied in this test series, the tests have shown T3 is the dominant factor in the NOx formation for RQL combustors. As T3 increases from 600 to 1100 F, EI(NOx) increases approximately three fold. (4) Factors which appear to have secondary influence on NOx formation are P4, T4, infinity(sub rb), V(sub ref,ov). (5) Low smoke numbers were measured for infinity(sub rb) of 2.0 at P4 of 120 psia.

Chang, Clarence T.; Holdeman, James D.

2001-01-01

478

Pore destruction resulting from mechanical thermal expression  

SciTech Connect

Mechanical thermal expression (MTE) is a dewatering technology ideally suited for the dewatering of internally porous biomaterials. For such materials, the combined application of temperature and compressive force in the MTE process enhances the collapse of the porous structure, resulting in effective water removal. In this article, a comparison of the dewatering of titanium dioxide, which is an ideal incompressible, non-porous material, and lignite, which is a porous plant-based biomaterial, is presented. The comparison is based on the parameters critical to dewatering, namely the material compressibility and the permeability. With the aid of mercury porosimetry results, a detailed discussion of the pore destruction of lignite resulting from MTE processing is presented. It is illustrated that there is a well-defined relationship between the pore size distribution after MTE dewatering and the MTE temperature and pressure. The discussion is extended to an investigation of the effects of MTE processing conditions on the effective and noneffective porosity. The effective porosity is defined as the interconnected porosity, which contributes to flow through the compressed matrix, while the non-effective porosity is the remaining porosity, which does not contribute to flow. It is illustrated that there is a linear relationship in both the effective and non-effective porosity with the total porosity. The linear relationship is independent of the processing conditions. It is also shown that MTE processing collapses the effective and non-effective pores at roughly the same rate.

Clayton, S.A.; Wheeler, R.A.; Hoadley, A.F.A. [Monash University, Clayton, Vic. (Australia)

2007-07-01

479

IMPROVED RESULTS FOR STACKELBERG SCHEDULING STRATEGIES.  

SciTech Connect

We continue the study initiated in [Ro01] on Stackelberg Scheduling Strategies. We are given a set of n independent parallel machines or equivalently a set of n parallel edges on which certain flow has to be sent. Each edge e is endowed with a latency function l{sub e}({center_dot}). The setting is that of a non-cooperative game: players choose edges so as minimize their individual latencies. Additionally, there is a single player who control as fraction ?? of the total flow. The goal is to find a strategy for the leader (i.e. an assignment of flow to indivual links) such that the selfish users react so as to minimize the total latency of the system. Building on the recent results in [Ro01, RT00], we show the following: 1. We devise a fully polynomial approximate scheme for the problem of finding the cheapest Stackelberg Strategy: given a performance requirement, our algorithm runs in time polynomial in n and {var_epsilon} and produces a Stackelberg strategy s, whose associated cost is within a 1 + {v