julilili42/papers huggingface dataset:
The Magnetic Field of Neutron Stars: What Can Cyclotron Lines Tell Us?
2010-01-01

"Cyclotron lines" provide the only direct way to measure the magnetic field of neutron stars. Detected as strong absorption features in the spectra of accreting X‐ray pulsars, they provide a powerful tool to probe the line‐forming region above the neutron star magnetic poles. The lines result from resonant scattering of the X‐ray photons with magnetically quantized electrons in the plasma of accreted material. The interpretation of their positions and observationally clearly resolved structure can be used to constrain the physical parameters of accretion.
The Status of the Gravitational Wave Research
2010-01-01

As several large scale interferometers are beginning to take data at sensitivities where astrophysical sources are predicted, the direct detection of gravitational waves may well be imminent. This would open the gravitational‐wave window to our Universe, and should lead to a much improved understanding of the most violent processes imaginable; the formation of black holes and neutron stars following core collapse supernovae and the merger of compact objects at the end of binary inspiral.
3-D Orientation of Single Molecules in an Optical ?/2-Microresonator
2010-01-01

We present here a tunable microresonator which can be used to modify the optical properties of single quantum emitters. The 3D-orientation and position of a single molecule is determined with a radially polarized laser beam.
Long-term variability of Vela X-1
2010-01-01

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation P. Kretschmar, J. Keating, I. Kreykenbohm, J. Wilms, R. Staubert; Long‐term variability of Vela X‐1. AIP Conference Proceedings 15 July 2010; 1248 (1): 167–168. https://doi.org/10.1063/1.3475185 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
UX Ursae Majoris as a SW Sex star
2010-01-01

We present an analysis of time‐resolved, medium resolution optical spectroscopic observations of UX UMa in the blue (3920–5250 Å) and red (6100–7200 Å) wavelength ranges in April 1999 and March 2008, respectively. UX UMa has been in different states during those observations. Doppler tomography method was used to accretion disc structure investigation in both states. During the observations in 1999, UX UMa showed many of the defining properties of the SW Sex stars. However, all these features almost completely disappeared in 2008. We have also estimated the radial velocity semi‐amplitude K1.
Pore surface energy corrected P—α like models and the anomalous behaviour of porous materials
2010-01-01

Accurate models for the description of porous materials are necessary in simulations of collisions between pre‐planetesimals which are required to study the viability of collisional growth as a mechanism leading to the formation of planetesimals. We have compared two porosity models that have been used in the related field of impact cratering, and we have found that they suffer two problems when applied to high porosity materials that are likely to show the so called anomalous behaviour. To overcome the observed problems we have proposed a correction of the internal energy of the porous material considering the contribution of the surface energy of the pores.
Nucleon correlations and the equation of state of nuclear matter
2010-01-01

The self-consistent Green's function method within the ladder approximation provides a microscopic description of correlated nuclear systems which properly treats the nucleon-nucleon correlations induced by the short-range and tensor components present in any realistic interaction. These correlations produce a sizable depletion of low momenta below the Fermi surface as well as the occupation of high momenta in the nuclear ground state. A few representative results for nuclear matter are presented to illustrate the present progress in the application of this method to nuclear systems.
WACCABI—A 2D Radiative Transfer Code for Stellar Winds in Cataclysmic Binaries
2010-01-01

We present a new 2D ray‐tracing technique for computing the emergent spectra of winds originating from the surfaces of primary star and accretion disk in cataclysmic binaries. By using a highly modular approach, allowing easy modification and extension of the code, we self‐consistently solve the pan‐chromatic radiative transfer problem in moving media. Primary application of this code is to complement and to be used in conjunction with model atmosphere codes for stellar and accretion disk atmospheres and wind hydrodynamical models.
Motivating Certain Variation Patterns in Degree Constructions: Semantics Meets Grammaticalization
2010-01-01

We analyze patterns of variation in degree constructions as ultimately semantically motivated (Beck et al. 2004);> more precisely, as rooted at the (structured) level of logical form via a parameter based on binding. The paper pursues two related objectives. First, we complement the sharp distinction between languages like Japanese vs. English with a case of a language that seems to be parametrically intermediate. We suggest that Modern Romanian is sensitive to largely the same configurations which are conspicuous in the Japanese/English split, but that it marks the relevant dependencies overtly. Second, we probe for the grammaticalization process of the pertinent functional items involved in marking degree dependencies by conducting a diachronic pilot study. In this part of the article, we analyze data from (literary) Old Romanian. We investigate the degree constructions at this stage of the language in preliminary fashion and point out that they display a particularly instable situation with regard to the diagnostics of the degree parameter discussed, a factor which may have enhanced the grammaticalization of the particular strategies under discussion and hence co-motivates the apparently idiosyncratic current distribution in the language.
Mesonic bound states in the cc spectrum
2010-01-01

We report on evidence for heavy meson molecules in the charmonium spectrum and consider the Y(3940), Y(4140) and Z±(4430) as bound states of open charm mesons. In particular, the Y(3940) is considered to be a superposition of D*+D*− and D*0D*0 ̄, while the Y(4140) is a bound state of Ds*+ and Ds*− mesons. For the charged Z± meson we use the interpretation of a D̄1D* molecular state. In the present work we study the observed unusually large hidden-charm decay modes and give predictions for the radiative decays.
Evidence for planets orbiting the post-common envelope binary NN Serpentis
2010-01-01

From published and new mid‐eclipse times obtained between 1988 and 2010 we find long‐term eclipse time variations in the post‐common envelope eclipsing binary NN Ser. We find strong evidence for two circum‐binary planets in this system with orbital periods of Pc = 15.5 and Pd = 7.7 yrs, small eccentricities of ec≈0 and ed≈0.2 and lower mass limits of Mc sin ic = 6.9 and Mc sin ic = 2.2 MJup. The periods suggest that the planets are locked in a 2:1 resonance. A second solution with a 5:2 resonance and slightly modified planetary parameters results in a nearly equal reduced χ2. The progenitor system is estimated to consists of a ≈2 M⊙ primary and the present M dwarf secondary at ≈1.5 AU distance. The first generation formation of planets and their survival in the later evolutionary stages or the second generation formation in the common envelope shed new light on planet formation and evolution.
Chip Design Process Optimization Based on Design Quality Assessment
2010-01-01

Nowadays, the managing of product development projects is increasingly challenging. Especially the IC design of ASICs with both analog and digital components (mixed‐signal design) is becoming more and more complex, while the time‐to‐market window narrows at the same time. Still, high quality standards must be fulfilled. Projects and their status are becoming less transparent due to this complexity. This makes the planning and execution of projects rather difficult. Therefore, there is a need for efficient project control. A main challenge is the objective evaluation of the current development status. Are all requirements successfully verified? Are all intermediate goals achieved? Companies often develop special solutions that are not reusable in other projects. This makes the quality measurement process itself less efficient and produces too much overhead. The method proposed in this paper is a contribution to solve these issues. It is applied at a German design house for analog mixed‐signal IC design. This paper presents the results of a case study and introduces an optimized project scheduling on the basis of quality assessment results.
Comparative Study of Plasma-Sprayed Yttria-Stabilized Zirconia Thin Films Based on Conventional and Nanostructured Powder
2010-01-01

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation B.‐E. Schuster, C. Christenn, A. Haug, G. Schiller, T. Chassé, K. A. Friedrich; Comparative Study of Plasma‐Sprayed Yttria‐Stabilized Zirconia Thin Films Based on Conventional and Nanostructured Powder. AIP Conf. Proc. 6 August 2010; 1267 (1): 592. https://doi.org/10.1063/1.3482694 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
The ABC Effect in the Double-Pionic Fusion to4He.
2010-01-01

The double-pionic fusion to 4He was measured exclusively and kinematically complete with the WASA 4π detector at COSY for the reactions dd →4Heπ0π0 and dd →4Heπ+π− . The measurements were performed over the full energy region, where the so-called ABC effect was observed previously in inclusive measurements. Whereas the latter exhibit not only a low-mass enhancement – the ABC-effect – in the 4He missing mass spectrum but also a prominent high-mass enhancement, we observe only a very strong low-mass enhancement and no pronounced high mass enhancement. This is in contrast to theoretical predictions based on t-channel ∆∆ excitation. Also the energy dependence of the observed total cross section does not fit to such predictions. Both features, however, agree very well with the observations in the most basic double-pionic fusion process in the isoscalar channel pn → dπ0π0.
SHIL &#x2014; Sensor hybridization for indoor location based services
2010-01-01

In recent years there is a growing necessity for indoor location based services. Although, many solutions had been proposed, universal applicability of the solutions to all the services is not feasible. In this paper, a hybrid prototype system that can be easily integrated to any indoor location based applications is presented. The constructed hybrid prototype comprises of three potential sensor components namely Bluetooth, RFID and MEMS sensor. The advantage of using a hybrid system in comparison to solutions based on single sensors is validated. Overall, the experimental results substantiate the reliability and competence of the proposed system.
P01-71 - Are Treatment Preferences Relevant for Response to Serotonergic Antidepressants and Cognitive-behavioural Therapy in Depressed Primary Care Patients?
2010-01-01

Objectives Little is known about the influence of patients’ preferences and expectations about offered treatments for depression on treatment outcome. Therefore, we investigated whether in primary care patients with depressive disorders receiving a preferred treatment is associated with a better clinical outcome. Methods Within a randomized, placebo-controlled, single-centre, 10-week trial with five arms (sertraline; placebo; cognitive-behavioural group therapy (CBT-G); moderated self-help group control; treatment with sertraline or CBT-G according to patients’ choice), 145 primary care patients with mild-to-moderate depressive disorders according to DSM-IV criteria were investigated. Preference for medication versus psychotherapy was assessed at the time of patients’ screening using a single item. To assess therapy outcome, the post-baseline sum scores of the Hamilton Depression Rating Scale (HAMD-17) were used. Results Depressed patients receiving their preferred treatment (sertraline or CBT-G) (N=63) responded significantly better than those who did not receive their preferred therapy (N=54) (p = 0.001). The difference in outcome between both groups was 8.0 points on HAMD-17 for psychotherapy and 2.9 points on HAMD-17 for treatment with antidepressants. This result is not explained by differences in depression severity or drop-out rates. Conclusions Patients’ preference for pharmaco- versus psychotherapy should be considered when offering a treatment because receiving the preferred treatment conveys an additional and clinically relevant benefit (HAMD-17: +2.9 points for drugs; +8.0 points for CBT-G) in outcome.
Autoantibodies to asialoglycoprotein receptor (ASGPR) measured by a novel ELISA–revival of a disease-activity marker in autoimmune hepatitis (AIH)
2010-01-01

Aims: Aim of the study was to develop a novel solid-phase immunoassay for the detection of anti-ASGPR IgG demonstrated to correlate with disease activity in AIH. However, due to the fragility of this liver-specific autoantigen, no standardised immunoassay has been available until now.
S35-01 - Clinical Influencing Factors of Acute Treatment Outcome in First-Episode Schizophrenia Patients
2010-01-01

Background Aim was to evaluate influencing factors of response and symptomatic remission in first-episode schizophrenia patients treated with risperidone or haloperidol. Methods 229 first-episode schizophrenic patients were examined within a double blind controlled trial of the German Study Group on first-episode schizophrenia with biweekly PANSS ratings. Response was defined according to the definition by Lieberman et al. (2003) and symptomatic remission as the severity component of the consensus remission criteria by the Remission in Schizophrenia Working Group. Sociodemographic, psychopathological and functional variables as well as the treatment applied were evaluated regarding their potential predictive validity for treatment outcome. Univariate tests, logistic regression and CART-analyses were consulted as statistical methods. Results 126 patients (55%) achieved response and 118 patients (52%) symptomatic remission at discharge with no significant differences between the risperidone (51%) and haloperidol (49%) treated patients. Better baseline functioning, early treatment response, less depressive symptoms and a shorter duration of untreated psychosis were revealed significant predictors of response. Patients with symptomatic remission also had a significantly shorter duration of untreated psychosis and significantly less depressive symptoms at baseline. Logistic regression and CART-analyses revealed low general psychopathology, early treatment response and a high score in the Strauss-Carpenter-Prognostic-Scale at admission to be significantly positive predictive for symptomatic resolution. Conclusion Early treatment response, depressive symptoms and the level of psychosocial functioning were revealed to significantly predict outcome, with no significant differences between risperidone and haloperidol. The importance of an early adequate symptom control and the implementation of early intervention programs is highlighted.
FUNCTIONAL AND MORPHOLOGICAL EVALUATION OF PURTSCHER RETINOPATHY
2010-01-01

The inner and outer retinal layers are altered morphologically and functionally in eyes with PR. The dynamic evaluation on retinal morphology and function may be useful in understanding the pathophysiology of PR.
PW01-01 - Treatment of Atypical Depression: Post-Hoc Analysis of a Rct Testing The Efficacy Of Sertraline and Cbt in Primary Care Patients
2010-01-01

Objectives Atypical features are common among depressed primary care patients, but clinical trials testing the efficacy of psychopharmacological and/or psychotherapeutic treatment are lacking. This paper examines the efficacy of sertraline and cognitive behavioural therapy (CBT) among depressed patients with atypical features. Methods Analyses involve a double-blind comparison of sertraline versus placebo (N=47) and a single-blind comparison between CBT versus a guided self-help group (GSG) (N=48), with primary efficacy endpoints being the Inventory of Depressive Symptomatology (IDS C ) and Hamilton Depression Scale (HAMD-17). Results In intent-to-treat (ITT) analyses, the decrease on the IDS C scale (and HAMD-17) was greater after CBT compared to GSG: p=0.01 (HAMD-17: p=0.01). The difference between SSRI versus placebo was not significant: p=0.22 (HAMD-17: p=0.36). At endpoint, the CBT versus GSG difference in mean change from baseline IDSc scores was 7.69 points (HAMD-17: 4.97 points), the sertraline versus placebo difference was 3.07 points (HAMD-17: 0.59 points). Conclusions The data provide a preliminary suggestion that the mix of patients with minor or mild major depression with atypical features may not be best treated with an SSRI, but that these conditions might be amenable to CBT. Although SSRI were not superior to placebo, it would be premature to rule out SSRI as efficacious in atypical depression.
New autoantibodies in primary sclerosing cholangitis: reactivity with distinct immunodominant epitopes of sulfite oxidase
2010-01-01

From preliminary data we had evidence that sera from patients with cholestatic liver diseases react with an antigen fraction prepared from chicken liver containing sulfite oxidase (SO). In order to analyze this reactivity in more detail, we produced human recombinant SO, and it will be shown, that anti-SO antibodies are confined to primary sclerosing cholangitis (PSC). Human recombinant SO was expressed in E. coli. Sera from 16 untreated PSC-patients, 149 patients with primary biliary cirrhosis (PBC) or autoimmune hepatitis (AIH), and 73 patients with inflammatory bowel diseases (IBD) were investigated by ELISA and Western blotting (WB). The 60kDa band of recombinant SO was recognized in the WB only by PSC-sera but not by sera from patients with other disorders. In the ELISA, 57% of the PSC-patients were positive but only 9% of patients with other autoimmune liver disorders (p&lt;0.05) and 3% of patients with IBD. Antibody titers in the ELISA were significantly higher in the PSC-patients than in all other disorders (p&lt;0.01). During treatment with ursodeoxycholic acid (UDCA), anti-SO antibody titers significantly decreased. There was no correlation between the presence of anti-SO antibodies and antibodies to neutrophils (pANCA) or other laboratory parameters. Testing anti-SO positive PSC sera against synthetic overlapping 25mers of SO, three immunodominant regions (aminoacids 1–25, 154–212, 392–416) could be identified. PSC-sera contain antibodies to SO in high titers and incidence (about 60%). They recognize three immunodominant epitopes on SO, and titers decrease during UDCA-therapy. Anti-SO antibodies are hardly found in patients with other hepatic and non-hepatic disorders and may be, therefore, taken as a further marker antibody for PSC.
Controlling Fluorescence Resonance Energy Transfer (FRET) by optical confinement in a λ/2-microresonator
2010-01-01

FRET plays an important role in light-induced processes in life sciences, e.g. energy transfer in light harvesting complexes. We present a method to tune the energy transfer from donor to acceptor in an optical microresonator.
Modelling the Evolution of Planets in Disks
2010-01-01

To explain important properties of extrasolar planetary systems (eg. close-in\\nhot Jupiters, resonant planets) an evolutionary scenario which allows for\\nradial migration of planets in disks is required. During their formation\\nprotoplanets undergo a phase in which they are embedded in the disk and\\ninteract gravitationally with it. This planet-disk interaction results in\\ntorques (through gravitational forces) acting on the planet that will change\\nits angular momentum and result in a radial migration of the planet through the\\ndisk. To determine the outcome of this very important process for planet\\nformation, dedicated high resolution numerical modeling is required. This\\ncontribution focusses on some important aspects of the numerical approach that\\nwe found essential for obtaining successful results. We specifically mention\\nthe treatment of Coriolis forces, Cartesian grids, and the FARGO method.\\n
Study of Few-Body Problems at WASA — the ABC Phenomenon
2010-01-01

\\n A short overview over the ongoing few-body program at WASA@COSY is given with\\n special emphasis on the ABC phenomenon, which is known since 50 years without\\n having found a consistent explanation. We show that this phenomenon is linked\\n with a resonant energy dependence in the total cross section of isoscalar\\n double-pionic fusion processes. This resonance structure is connected with the\\n baryon-baryon system, in particular with the pn and\\n ∆∆ systems, however, possesses a mass, which is 90 MeV\\n below the nominal ∆∆ threshold and has a width of only 50 MeV,\\n i. e., five times smaller than expected from a conventional t-channel\\n ∆∆ process.\\n
TOPP goes Rapid The OpenMS Proteomics Pipeline in a Grid-Enabled Web Portal
2010-01-01

Proteomics, the study of all the proteins contained in a particular sample, e.g., a cell, is a key technology in current biomedical research. The complexity and volume of proteomics data sets produced by mass spectrometric methods clearly suggests the use of grid-based high-performance computing for analysis. TOPP and OpenMS are open-source packages for proteomics data analysis, however, they do not provide support for Grid computing. In this work we present a portal interface for high-throughput data analysis with TOPP. The portal is based on Rapid, a tool for efficiently generating standardized port lets for a wide range of applications. The web-based interface allows the creation and editing of user-defined pipelines and their execution and monitoring on a Grid infrastructure. The portal also supports several file transfer protocols for data staging. It thus provides a simple and complete solution to high-throughput proteomics data analysis for inexperienced users through a convenient portal interface.