bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental and modelling studies on antifungal compounds
Authors: Doble Mukesh , Kumar K. 
Published: June 2006

AbstractAntifungal activity of organic compounds (aromatic, salicylic derivatives, cinnamyl derivatives etc) on Fusarium Rosium (14 compounds) and Aspergillus niger (17 compounds) was studied and QSAR models were developed relating molecular descriptors with the observed activity. Back propagation Neural Network models and single and multiple regression models were tested for predicting the observed activity. The data fit as well as the predictive capability of the neural network models were satisfactory (R2 = 0.84, q2 = 0.73 for Fusarium Rosium and R2 = 0.75, q2 = 0.62 for Aspergillus niger). The descriptors used in the network for the former were X4 (connectivity) and Jhetv (topological); and TIC1 (information) and SPI (topological) for the latter fungus. Antifungal activities of these organic compounds were generally lower against the latter than with the former fungus.
Hydrogen-bonding network in the organic salts of 4-nitrobenzoic acid
Authors: Chumakov Yurii , Simonov Yurii , Grozav Mata , Crisan Manuela , Bocelli Gabriele , Yakovenko Andrey , Lyubetsky Dmitry 
Published: June 2006

AbstractThe crystal structures of six novel salts of 4-nitrobenzoic acid — namely, 2-hydroxyethylammonium 4-nitrobenzoate (I), 2-hydroxypropylammonium 4-nitrobenzoate (II), 1-(hydroxymethyl)propylammonium 4-nitrobenzoate (III), 3-hydroxypropylammonium 4-nitrobenzoate (IV), bis-(2-hydroxyethylammonium) 4-nitrobenzoate (V), morpholinium 4-nitrobenzoate (VI) — containing the same anion but different cations have been studied. The ionic forms of I-VI serve as building blocks of the supramolecular architecture, and in crystals they are held together via ionic N-H···O and O-H···O hydrogen bonds. In the crystal packing the building blocks of I-III are self-assembled via N-H...O, O-H···O and C-H...O hydrogen bonds to form the chains which are further consolidated into two-dimensional layers by the same type of interactions. In IV-VI the chain-like structures have been generated by building blocks.
Remarks on affine complete distributive lattices
Authors: Zypen Dominic 
Published: June 2006

Abstract
We characterise the Priestley spaces corresponding to affine complete bounded distributive lattices. Moreover we prove that the class of affine complete bounded distributive lattices is closed under products and free products. We show that every (not necessarily bounded) distributive lattice can be embedded in an affine complete one and that ℚ ∩ [0, 1] is initial in the class of affine complete lattices.
Left-symmetric algebras, or pre-Lie algebras in geometry and physics
Authors: Burde Dietrich 
Published: June 2006

Abstract
In this survey article we discuss the origin, theory and applications of left-symmetric algebras (LSAs in short) in geometry in physics. Recently Connes, Kreimer and Kontsevich have introduced LSAs in mathematical physics (QFT and renormalization theory), where the name pre-Lie algebras is used quite often. Already Cayley wrote about such algebras more than hundred years ago. Indeed, LSAs arise in many different areas of mathematics and physics. We attempt to give a survey of the fields where LSAs play an important role. Furthermore we study the algebraic theory of LSAs such as structure theory, radical theory, cohomology theory and the classification of simple LSAs. We also discuss applications to faithful Lie algebra representations.
On presentations of Brauer-type monoids
Authors: Kudryavtseva Ganna , Mazorchuk Volodymyr 
Published: June 2006

Abstract
We obtain presentations for the Brauer monoid, the partial analogue of the Brauer monoid, and for the greatest factorizable inverse submonoid of the dual symmetric inverse monoid. In all three cases we apply the same approach, based on the realization of all these monoids as Brauer-type monoids.
A new approach to the use of EMMRS: Ionic Mobility MR Spectroscopy (IMMRS)
Authors: Lewa Czesław , Klinkosz Tomasz 
Published: June 2006

Abstract
A new approach to the use of the previously proposed method called Electrical Mobility Magnetic Resonance Spectroscopy (EMMRS) has been worked out. It consists in obtaining mobility distribution, lifetimes, and activation energy of charge carriers by introducing into the medium a longitudinal elastic wave perpendicular to the electric field which causes displacement of charges (electrons, protons, ions, free radicals, and molecules related with charge carriers) present in the biological environment or inanimate matter. Such a method allows for determination of these quantities within small areas, thus offering possibilities for their imaging. We therefore suggest to call it Ionic Mobility MR Spectroscopy (IMMRS).
Dynamics of two quantum entangled particles interacting with a potential barrier in an EPR experiment
Authors: Petrillo Vittoria , Alberti Giorgia , Celardo Luca , Cerutti Francesco , Franchi Silvano , Mariani Vittorio 
Published: June 2006

Abstract
The effect of a position measurement on one component of a two-particle wave packet in a regularized space-momentum entangled state is analyzed. The wave packet interacts in the physical space with a potential barrier. When a position or momentum measurement is performed on one particle, a consequent strong modification of the dynamics of the other particle occurs.
Influence of ion bombardment on the photoluminescence response of embedded CdS nanoparticles
Authors: Mohanta Dambarudhar , Singh Fouran , Avasthi D. , Choudhury Amarjyoti 
Published: June 2006

Abstract
Semiconductor nanoparticles (CdS) were fabricated by an inexpensive chemical route using polyvinyl alcohol (PVA) as the dielectric host matrix. Nano-CdS in PVA were subjected to ion irradiation (using oxygen, chlorine and gold) in the medium energy range (80–100 MeV) and under fluence variation of 1011–1013 ions/cm2. The nature of light emission was found to be drastically different in each of the three cases. Photoluminescence spectra of oxygen irradiated samples exhibit band edge emission (2.8 eV) as well as trap related emission (1.76 eV) whereas band edge emission is found to be bleached out for chlorine ion irradiated nano-CdS. The intense broad PL peaks, noticeable in the case of gold ion irradiated samples suggest superposition of the two peaks — namely, band edge emission and trap related emission. Furthermore, in the case of gold ion irradiated nano-CdS, energy shift in the PL spectra reveals variation in size distribution caused by the extra pressure effect of heavy gold ion beams. The mechanism of such a difference as a result of ion irradiation-type and ion-fluence is discussed in detail.
Translation-rotation coupling and heat transfer in orientationally-disordered phase of CCl4
Authors: Pursky Oleg , Konstantinov Vyacheslav 
Published: June 2006

Abstract
The isochoric thermal conductivity of an orientationally-disordered phase of CCl4 is analysed within a model in which heat is transferred by phonons and above the phonon mobility edge by ”diffusive” modes migrating randomly from site to site. The mobility edge ω0 is found from the condition that the phonon mean-free path cannot become smaller than half the phonon wavelength. The contributions of phonon-phonon, one-, and two-phonon scattering to the total thermal resistance of solid CCl4 are calcualted under the assumption that the different scattering mechanisms contribute additively. An increase in the isochoric thermal conductivity with temperature is explained by suppression of phonon scattering at rotational excitations due to a decrease in correlation in the rotation of neighbouring molecules.
Decoherence in elastic and polaronic transport via discrete quantum states
Authors: Walczak Kamil 
Published: June 2006

Abstract
In this work we study the effect of decoherence on elastic and polaronic transport via discrete quantum states. Calculations are performed with the help of a nonperturbative computational scheme, based on Green’s function theory within the framework of polaron transformation (GFT-PT), where the many-body electron-phonon interaction problem is mapped exactly into a single-electron multi-channel scattering problem. In particular, the influence of dephasing and relaxation processes on the shape of the electrical current and shot noise curves is discussed in detail under linear and nonlinear transport conditions.
Optical properties of Quantum Disks: Real density matrix approach
Authors: Czajkowski Gerard , Silvestri Leonardo 
Published: June 2006

Abstract
We show how to compute the optical response of a Quantum Disk (QDisk) to an electromagnetic wave as a function of the incident wave polarization, in the energetic region of interband transitions. Both the TM and TE polarization in guided-wave geometry are analyzed. The method uses the microscopic calculation of Quantum Disk eigenfunctions and the macroscopic real density matrix approach to compute the effective QDisk susceptibility, taking into account the valence band structure of the QDisk material and the Coulomb interaction between the electron and the hole. Analytical expressions for the QDisk susceptibility are obtained for a certain model electron — hole potential. Using these expressions, all optical functions can be computed. Results for the absorption coefficient are computed for InAs/GaAs QDisks. Fair agreement with experiments is obtained.
Multivariate statistical approaches as applied to environmental physics studies
Authors: Lovchinov Vasil , Tsakovski Stefan 
Published: June 2006

Abstract
The present communication deals with the application of the most important environmetric approaches like cluster analysis, principal components analysis and principal components regression (apportioning models) to environmental systems which are of substantial interest for environmental physics — surface waters, aerosols, and coastal sediments. Using various case studies we identify the latent factors responsible for the data set structure and construct models showing the contribution of each identified source (anthropogenic or natural) to the total measure of the pollution. In this way the information obtained by the monitoring data becomes broader and more intelligent, which help in problem solving in environmental physics.
Development of temporal spectroscopic properties for Xerogel matrices doped with Rhodamine 6G dye
Authors: Al-Wattar Abbas , Chiad Baha , Twej Wesam , Al-Awadi Sarmed 
Published: June 2006

Abstract
The solid host of a laser dye modifies its spectroscopic properties with respect to its liquid host. During the Sol-Gel process the dye molecules suffer from changing their environment. Two parameters affect this matter, the change in the concentration due to the evaporation of the solvent (drying) and the caging of dye molecules inside the pores or attachment to the silica network. Rhodamine 6G absorption and fluorescence spectra with different concentrations, during Sol-Gel time processing, have been studied. Both, absorption and fluorescence spectra of the dye in the solid host, for different concentrations, show a blue-shift relative to its liquid phase.
Chronological age, but not FMRP levels, predicts neuropsychological performance in girls with fragile X syndrome
Authors: Lightbody Amy A. , Hall Scott S. , Reiss Allan L. 
Published: June 2006

AbstractThe effect of FMRP levels and chronological age on executive functioning, visual‐spatial abilities ,and verbal fluency tasks were examined in 46 school‐age girls with fragile X syndrome (FXS). Results indicated that FMRP levels were not predictive of outcome on the neuropsychological tests but that performance on the executive functioning task tended to worsen with chronological age. This age effect was not observed on the tests of visual‐spatial abilities or verbal fluency. These data indicate that relative deficits in executive functioning in girls with FXS become more pronounced with age. In contrast, the relative deficits in spatial and verbal abilities of these girls did not appear to increase with age, suggesting that these abilities may be spared. © 2006 Wiley‐Liss, Inc.
Angiotensin‐converting enzyme and angiotensin II type 1 receptor gene polymorphisms in children with subacute sclerosing panencephalitis
Authors: Taşdemir Nebahat , Ece Aydın , Tekeş Selahattin , Dikici Süber , Güneş Ali , Balık Hasan 
Published: June 2006

AbstractSubacute sclerosing panencephalitis (SSPE) is a progressive, debilitating, and fatal brain disorder caused by mutant measles virus infection. Although both viral and host factors seem to be involved in SSPE, the exact pathogenesis remains to be determined. Autoimmune demyelination is characteristic of SSPE. The blood angiotensin‐converting enzyme (ACE) activity and angiotensin II (Ang II) levels are associated with the ACE gene polymorphism. Proinflammatory effects of Ang II may contribute to the development of SSPE. The aim of this study was to investigate whether the ACE and Ang II type 1 receptor (AT1R) (A1166C) gene polymorphisms were associated with SSPE. The polymorphisms were investigated by polymerase chain reaction (PCR) in 43 patients with SSPE and 100 healthy controls. The genotype distribution of the SSPE children and healthy controls were as follows: DD 58.1% versus 34.0, ID 37.2% versus 48.0%, and II 4.7% versus 18.0, respectively (P = 0.012). Allele frequencies of patients and controls were D 76.7% versus 58.0%, and I 23.3% versus 42.0%, respectively (P = 0.004). The frequency of DD genotype and D allele were significantly higher in SSPE children compared with controls (P < 0.05). AT1R gene polymorphism distribution was found to be similar in SSPE children and control subjects: AA 55.8% versus 60.7%, AC 37.2% versus 32.1%, and CC 7.0% versus 7.2%, respectively (P > 0.05). In conclusion, the results of this study suggest that the DD genotype of ACE I/D polymorphism may be related to SSPE. Due to small size of this study, further studies with more patients are needed to confirm these results. © 2006 Wiley‐Liss, Inc.
Further evidence of a maternal parent‐of‐origin effect on chromosome 10 in late‐onset Alzheimer's disease
Authors: Bassett Susan Spear , Avramopoulos Dimitrios , Perry Rodney T. , Wiener Howard , Watson Bracie , Go Rodney C. P. , Fallin M. Daniele 
Published: June 2006

AbstractThe chromosome 10q region has recently received a great deal of attention in late‐onset Alzheimer's disease (LOAD), given the growing evidence of linkage to LOAD, or to A‐beta levels, reported by several groups. In a recent paper we reported evidence of linkage in this region in our subset of the NIMH AD genetics initiative pedigrees, approaching genome‐wide significance (non‐parametric LOD score = 3.27), when only families with maternal disease origin were analyzed [Bassett et al. (2002); Am J Med Genet 114:679–686]. We have now extended this work, using an independent subset of NIMH AD pedigrees from the University of Alabama at Birmingham (UAB), and show further evidence of linkage using parent‐of‐origin information. As in our Hopkins sample, maternal but not paternal pedigrees show significantly increased linkage in the chromosome 10q region compared to the unstratified sample. Combining data from our previous fine‐mapping work on this region and five new markers genotyped in all pedigrees results in a non‐parametric LOD score of 3.73 in the same region, a value that reaches genome wide significance for linkage, with an empirical P value = 0.003. These results support our earlier findings and narrow the region of interest. In combination with findings from other groups, these results provide further evidence that this chromosome 10 region harbors a gene implicated in LOAD, and our use of parent‐of‐origin information has been useful in further narrowing the region of interest. © 2006 Wiley‐Liss, Inc.
Lack of influence of COMT and NET genes variants on executive functions in schizophrenic and bipolar patients, their first‐degree relatives and controls
Authors: Szöke A. , Schürhoff F. , Méary A. , Mathieu F. , Chevalier F. , Trandafir A. , Alter C. , Roy I. , Bellivier F. , Leboyer M. 
Published: June 2006

AbstractAbnormal dopaminergic function in the prefrontal cortex (PFC) may be a key factor in the etiopathogeny of schizophrenia and bipolar disorder. Both schizophrenic and bipolar subjects have executive functions (EF) deficits, thought to reflect abnormal PFC function. The main inactivation pathways for dopamine in the PFC are enzymatic cleavage by the Carboxy‐O‐Methyl‐Transferase (COMT) and reuptake by the nor‐epinephrine transporter (NET). Our aim in this study was to replicate previous studies that investigated influence of the COMT genotype on EF in schizophrenic subjects, their relatives and controls and extend their scope by including bipolar patients, and their relatives and by exploring NET gene polymorphisms influence on executive performances. We investigated one functional polymorphism of the COMT gene and two polymorphisms of the NET gene. EF were assessed by means of the Trail Making Test (TMT) and the Wisconsin Card Sorting Test (WCST). We assessed the effect of each of the three genotypes on EF for the whole sample (N = 318) and separately in schizophrenic (N = 66), bipolar (N = 94) and healthy subjects (i.e., relatives and controls N = 158). Separate analyses were performed because of the presence, in patients samples, of potentially confounding factors, especially medication. Genotype had no significant effect on the cognitive measures in any of the analyses (for the two EF measures, the three polymorphisms, and the four groups). In our sample we found no evidence in favor of a major effect of COMT or NET polymorphisms on the two tests of EF. © 2006 Wiley‐Liss, Inc.
Population‐based assessment of adverse events associated with long‐term glucocorticoid use
Authors: Curtis Jeffrey R. , Westfall Andrew O. , Allison Jeroan , Bijlsma Johannes W. , Freeman Allison , George Varghese , Kovac Stacey H. , Spettell Claire M. , Saag Kenneth G. 
Published: June 2006

AbstractObjectiveThe frequency of many adverse events (AEs) associated with low‐dose glucocorticoid use is unclear. We sought to determine the prevalence of glucocorticoid‐associated AEs in a large US managed care population.MethodsUsing linked administrative and pharmacy claims, adults receiving ≥60 days of glucocorticoids were identified. These individuals were surveyed about glucocorticoid use and symptoms of 8 AEs commonly attributed to glucocorticoid use.ResultsOf the 6,517 eligible glucocorticoid users identified, 2,446 (38%) returned the mailed survey. Respondents were 29% men with a mean ± SD age of 53 ± 14 years; 79% were white and 13% were African American. Respondents had a mean ± SD of 7 ± 3 comorbid conditions and were prescribed a mean ± SD prednisone‐equivalent dosage of 16 ± 14 mg/day. More than 90% of individuals reported at least 1 AE associated with glucocorticoid use; 55% reported that at least 1 AE was very bothersome. Weight gain was the most common self‐reported AE (70% of the individuals), cataracts (15%) and fractures (12%) were among the most serious. After multivariable adjustment, all AEs demonstrated a strong dose‐dependent association with cumulative glucocorticoid use. Among users of low‐dose therapy (≤7.5 mg of prednisone per day), increasing duration of use was significantly associated with acne, skin bruising, weight gain, and cataracts.ConclusionThe prevalence of 8 commonly attributed self‐reported glucocorticoid‐associated AEs was significantly associated with cumulative and average glucocorticoid dose in a dose‐dependent fashion. Physicians should be vigilant for glucocorticoid‐related AEs and should counsel patients about possible risks, even among low‐dose long‐term users.
Quality of life and psychological status in patients with primary Sjögren's syndrome and sicca symptoms without autoimmune features
Authors: Champey Julien , Corruble Emmanuelle , Gottenberg Jacques‐eric , Buhl Catherine , Meyer Tania , Caudmont Céline , Bergé Elisabeth , Pellet Jacques , Hardy Patrick , Mariette Xavier 
Published: June 2006

AbstractObjectiveTo compare pain, fatigue, and sicca symptoms; quality of life; and psychological status between patients with primary Sjögren's syndrome (SS) and those with sicca symptoms but no autoimmune features (sicca asthenia polyalgia syndrome [SAPS]), and to determine whether a psychological pattern can be detected in patients with SAPS, which could suggest psychological distress as the cause.MethodsThis cross‐sectional, prospective study included 111 patients with primary SS according to the American‐European Consensus Group criteria and 65 SAPS patients with no focus on lip biopsy and no anti‐SSA/SSB antibodies. Pain, fatigue, and sicca symptoms were assessed using visual analog scales; quality of life was assessed using the Short Form 36 (SF‐36); and psychological distress by the Symptom Checklist‐90‐Revised (SCL‐90‐R) questionnaire.ResultsNo difference was observed between primary SS and SAPS patients for pain, fatigue, sicca symptoms, quality of life, and psychological status. Fatigue and pain, but not dryness, were correlated with both quality of life and psychological distress in both groups. For primary SS patients, physical and mental composite scores on the SF‐36 correlated well with global severity index (GSI) scores of the SCL‐90‐R (r = −0.29, P = 0.006 and r = −0.61, P < 0.0001, respectively).ConclusionPatients with primary SS and SAPS do not differ in quality of life or psychological status. Although both diseases probably have a different origin, they may require the same psychological support or psychiatric care. The strong correlation between the composite physical and mental scores of the SF‐36 and the GSI scores of the SCL‐90‐R in primary SS patients emphasizes the importance of the psychological dimension in results of the SF‐36.
Influence of coping skills on health‐related quality of life in patients with systemic lupus erythematosus
Authors: Rinaldi Silvana , Ghisi Marta , Iaccarino Luca , Zampieri Sandra , Ghirardello Anna , Sarzi‐puttini Piercarlo , Ronconi Lucia , Perini Giulia , Todesco Silvano , Sanavio Ezio , Doria Andrea 
Published: June 2006

AbstractObjectiveTo identify coping strategies used by patients with systemic lupus erythematosus (SLE), and to assess the influence of main clinical and coping variables on health‐related quality of life (HRQOL).MethodsWe administered the Coping Orientation to Problems Experienced and the Short Form 36 questionnaire to a group of 144 patients with SLE and a group of 129 healthy controls. At the time of the psychological assessment, all patients underwent a complete clinical and laboratory evaluation.ResultsSLE patients had higher scores in acceptance (P < 0.001) and turning to religion (P = 0.05) and lower scores in planning (P = 0.001), suppression of competing activities (P = 0.010), restraint coping (P = 0.031), focusing on and venting of emotion (P = 0.009), and strategies focused on problem (P = 0.012) compared with controls. By means of linear regression analysis, HRQOL in SLE patients seemed to be influenced positively by restraint coping and positive reinterpretation and growth, and negatively by focusing on and venting of emotion, behavioral disengagement, and mental disengagement. When clinical variables were added to the multivariate analysis for coping strategies, more significant regression models that included joint pain were obtained.ConclusionIn facing stressful situations, patients with SLE tend to use coping skills that are generally adopted for events perceived as nonmodifiable. Strategies that show a passive attitude and joint pain seem to impair these patients' HRQOL.