bluuebunny/crossref_metadata_2025_split huggingface dataset:
Whispering gallery modes and effect of coating on Raman spectra of single microspheres
Authors: Dantham Venkata Ramanaiah , Bisht Prem Ballabh , Dobal Pramod Singh 
Published: February 2011

AbstractRaman spectra and fluorescence of BaTiO3 and silica microspheres of different sizes have been studied. The observed whispering gallery modes (WGMs) have been assigned using theoretical simulations based on the Lorenz–Mie theory. The WGMs are found to have selective enhancements in the Raman spectra. The variations in the Raman spectra with the radial position of the excitation spot and excitation wavelength have been correlated with the morphology‐dependent internal field distributions of the microspheres. The effect of a thin dye coating on the fluorescence and Raman spectra was studied, and a coating thickness of ∼200 nm was estimated from the theoretical simulation of experimentally observed data based on the Aden and Kerker theory. Copyright © 2011 John Wiley & Sons, Ltd.
High‐pressure Raman spectroscopic and other structural studies of hydrotalcites containing intercalated dicarboxylic acid anions
Authors: Wright Josh , Barsan Mirela M. , Butler Ian S. , Gilson Denis F. R. , Adebajo Moses O. , Frost Ray L. 
Published: February 2011

AbstractThe results of pressure‐tuning Raman spectroscopic, X‐ray powder diffraction and solid‐state 13C‐NMR studies of selected dicarboxylate anions intercalated in a Mg–Al layered double hydroxide lattice are reported. The pressure dependences of the vibrational modes are linear for pressures up to 4.6 GPa, indicating that no phase transitions occur. The interlayer spacings show that the oxalate, malonate and succinate dianions are oriented perpendicular to the layers, but the glutarate and adipate are tilted. The solid‐state 13C‐NMR spectra of these materials show full chemical shift anisotropy and, therefore, the anions are not mobile at room temperature. Copyright © 2011 John Wiley & Sons, Ltd.
Raman spectroscopic study of the minerals diadochite and destinezite Fe3+2(PO4,SO4)2(OH)· 6H2O: implications for soil science
Authors: Frost Ray L. , Palmer Sara J. 
Published: February 2011

AbstractThe two minerals diadochite and destinezite of formula Fe2(PO4,SO4)2(OH)· 6H2O have been characterised by Raman spectroscopy and complemented with infrared spectroscopy. Both these minerals are found in soils and are identical except for their morphology. Diadochite is amorphous whereas destinezite is highly crystalline. The spectra of diadochite are broad and ill defined, whereas the spectra of destinezite are intense and well defined. Bands are assigned to phosphate and sulfate stretching and bending modes. Two symmetric stretching modes for both phosphate and sulfate support the concept of non‐equivalent phosphate and sulfate units in the mineral structure. Multiple water bending and stretching modes imply that non‐equivalent water molecules in the structure exist with different hydrogen‐bond strengths. Copyright © 2011 John Wiley & Sons, Ltd.
Involvement of weak CH···X hydrogen bonds in metal‐to‐semiconductor regime change in one‐dimensional organic conductors (o‐DMTTF)2X (X = Cl, Br, and I): combined IR and Raman studies
Authors: Jankowski Damian , Świetlik Roman , Reinheimer Eric W. , Fourmigué Marc 
Published: February 2011

AbstractWe report on the infrared (IR) and Raman studies of the three isostructural quasi‐one‐dimensional cation radical salts of 3,4‐dimethyl‐tetrathiafulvalene (o‐DMTTF)2X (X = Cl, Br, and I), which all exhibit metallic properties at room temperature and undergo transitions to a semiconducting state in two steps: a soft metal‐to‐semiconductor regime change in the temperature region Tρ = 5–200 K and then a sharp phase transition at about TMI = 50 K. Polarized IR reflectance spectra (700–16 000 cm−1) and Raman spectra (50–3500 cm−1, excitation λ = 632.8 nm) of single crystals were measured as a function of temperature (T = 5–300 K) to assess the eventual formation of a charge‐ordered state below 50 K. Additionally, the temperature dependence of the IR absorption spectra of powdered crystals in KBr discs was also studied. The Raman spectra and especially the bands related to the CC stretching vibration of o‐DMTTF provide unambiguous evidence of uniform charge distribution on o‐DMTTF down to the lowest temperatures, without any modification below 50 K. However, the temperature dependence of Raman spectra indicates a regime change below about 200 K. Temperature dependence of both electronic dispersion and vibrational features observed in the IR spectra also clearly confirms the regime change below about 200 K and shows the involvement of CH···X hydrogen bonds in the electronic localization; some spectral changes can be also related with the phase transition at 50 K. Additionally, using density functional theory methods, the normal vibrational modes of the neutral o‐DMTTF0 and cationic o‐DMTTF+ species, as well as their theoretical IR and Raman spectra, were calculated. The theoretical data were compared with the experimental IR and Raman spectra of neutral o‐DMTTF molecule. Copyright © 2011 John Wiley & Sons, Ltd.
Photodissociation effects on pulsed laser deposited silver oxide thin films: surface‐enhanced resonance Raman scattering
Authors: Ravi Chandra Raju N. , Jagadeesh Kumar K. 
Published: February 2011

AbstractTemporal Raman scattering measurements with 488, 532 and 632 nm excitation wavelengths and normal Raman studies by varying the power (from 30 W/cm2 to 2 MW/cm2) at 488 nm were performed on silver oxide thin films prepared by pulsed‐laser deposition. Initially, silver oxide Raman spectra were observed with all three excitation wavelengths. With further increase in time and power, silver oxide photodissociated into silver nanostructures. High‐intensity spectral lines were observed at 1336 ± 25 and 1596 ± 10 cm−1 with 488 nm excitation. No spectral features were observed with 633 nm excitation. Surface‐enhanced resonance Raman scattering theory is used to explain the complex behavior in the intensity of the 1336/1596 cm−1 lines with varying power of 488 nm excitation. Copyright © 2011 John Wiley & Sons, Ltd.
A Raman spectroscopic study of bukovskýite Fe2(AsO4)(SO4)(OH)· 7H2O, a mineral phase with a significant role in arsenic migration
Authors: Loun Jan , Čejka Jiří , Sejkora Jiří , Plášil Jakub , Novák Milan , Frost Ray L. , Palmer Sara J. , Keeffe Eloise C. 
Published: February 2011

AbstractThe Raman spectrum of bukovskýite [Fe3+2(OH)(SO4)(AsO4)· 7H2O] has been studied and compared with that of an amorphous gel containing specifically Fe, As and S, which is understood to be an intermediate product in the formation of bukovskýite. The observed bands are assigned to the stretching and bending vibrations of (SO4)2− and (AsO4)3− units, stretching and bending vibrations and vibrational modes of hydrogen‐bonded water molecules, stretching and bending vibrations of hydrogen‐bonded (OH)− ions and Fe3+(O,OH) units. The approximate range of OH···O hydrogen bond lengths was inferred from the Raman spectra. Raman spectra of crystalline bukovskýite and of the amorphous gel differ in that the bukovskýite spectrum is more complex, the observed bands are sharp and the degenerate bands of (SO4)2− and (AsO4)3− are split and more intense. Lower wavenumbers of δ H2O bending vibrations in the spectrum of the amorphous gel may indicate the presence of weaker hydrogen bonds compared to those in bukovskýite. Copyright © 2011 John Wiley & Sons, Ltd.
Female sexual self‐schema after interpersonal trauma: Relationship to psychiatric and cognitive functioning in a clinical treatment‐seeking sample
Authors: Blain Leah M. , Galovski Tara E. , Peterson Zoë D. 
Published: February 2011

AbstractThis study assessed the relationship between sexual self‐schema and posttraumatic functioning in a clinical sample of 112 female sexual assault survivors. Contrary to hypotheses, posttraumatic stress disorder and depressive symptom severity were unrelated to the valence of sexual self‐schema. Yet, negative posttraumatic cognitions were related to sexual self‐schemas. Specifically, less positive self‐views were associated with more negative schema (r = −.35). In a multivariate analysis, the measure of negative views of the world and others was associated with more positive schema. Results indicate that intervening to improve survivors' postassault appraisals of the self may help to reduce the impact of interpersonal trauma on women's sexual functioning.
Urodynamic results and clinical outcomes with intradetrusor injections of onabotulinumtoxina in a randomized, placebo‐controlled dose‐finding study in idiopathic overactive bladder
Authors: Rovner Eric , Kennelly Michael , Schulte‐Baukloh Heinrich , Zhou Jihao , Haag‐Molkenteller Cornelia , Dasgupta Prokar 
Published: February 2011

AbstractAimsWe assessed the effects of onabotulinumtoxinA (BOTOX®) on clinical and urodynamic variables in patients with idiopathic overactive bladder (OAB) and urinary urgency incontinence (UUI) with or without detrusor overactivity (DO), inadequately managed with anticholinergics.MethodsThree hundred thirteen patients with OAB were randomized to double‐blind intradetrusor injection with placebo (n = 44) or 1 of 5 onabotulinumtoxinA doses (50–300 U; n = 269). Primary efficacy variable was change from baseline in UUI episodes/week at week 12. Urodynamic assessments at baseline and weeks 12 and 36 included maximum cystometric capacity (MCC) and volume at first involuntary detrusor contraction (IDC).Results76.0% of patients had baseline DO. Changes from baseline in MCC and volume at first IDC with onabotulinumtoxinA ≥100 U were superior to placebo at week 12, generally decreasing by week 36. Significant dose‐dependent increases in MCC were observed for all onabotulinumtoxinA doses at week 12, and for 150, 200, and 300 U at week 36. Data suggested a dose–response relationship. At week 12 on diary, 15.9% of placebo and 29.8–57.1% of onabotulinumtoxinA 50–300 U recipients, respectively, did not demonstrate UUI. OnabotulinumtoxinA doses >150 U were more commonly associated with post‐void residual urine volumes >200 ml.ConclusionsImprovements in urodynamic parameters and clinical outcomes generally trended together following onabotulinumtoxinA treatment. This therapy improved key urodynamic parameters in patients with idiopathic OAB and UUI, with no differences in outcomes between those with and those without baseline DO. Therefore, successful idiopathic OAB treatment with onabotulinumtoxinA does not appear to be related to pretreatment finding of DO. 30:556–562, 2011. © 2011 Wiley‐Liss, Inc.
Impact of female urinary incontinence and urgency on women's and their partners' sexual life
Authors: Nilsson Margareta , Lalos Othon , Lindkvist Håkan , Lalos Ann 
Published: February 2011

AbstractAims. To assess the impact of female urinary incontinence (UI) and urgency on women's and their partners' sexual life in sexually active couples and to elucidate the concordance of answers within couples. Methods. Women aged 18–74 years with UI and/or urgency (n = 206) were consecutively recruited from four outpatient clinics. Those with a partner (n = 170) completed a questionnaire regarding relationship and sexual life and gave a similar questionnaire to him. The present paper focuses on 99 couples with an active sexual life. Results. Twenty‐two percent of the men and 43% of the women stated that the female urinary symptoms impaired their sexual life. Forty‐nine percent of the women expressed worries about having urinary leakage during sexual activity, but most of their men, 94%, did not. Twenty‐three percent of the men and 39% of the women responded that the woman leaked urine during sexual activity. The majority, 84%, of women considered this a problem, but 65% of their partners did not. Except for this disparity, the rest of the answers were significant concordant within the couples. Conclusions. Female UI and urgency negatively affected sexual life in almost half of the women and in every fifth partner. A need for information and advice concerning sexual issues due to the woman's urinary disorder was found in one fifth of the couples. The majority of women with urinary leakage during sexual activities considered this as a problem, but most of their partners did not. Overall, the concordance of the answers within the couples was high. Neurourol. Urodynam. 30:1276–1280, 2011. © 2010 Wiley‐Liss, Inc.
Increased transient receptor potential vanilloid type 1 (TRPV1) signaling in idiopathic overactive bladder urothelial cells
Authors: Li Mingkai , Sun Yan , Simard J. Marc , Chai Toby C. 
Published: February 2011

AbstractAimsTo measure transient receptor potential vanilloid type 1 (TRPV1) signaling in human bladder urothelial cells (BUC) from non‐neurogenic overactive bladder (OAB) patients and control subjects (NB) BUC.Materials and MethodsPrimary BUC cell cultures were derived from cystoscopic biopsies from two OAB and two NB subjects. TRPV1 expression was detected by immunofluorescence, PCR and Western blot staining. TRPV1 function was assessed by capsaicin (CAP, 6 µM)‐evoked intracellular calcium ([Ca2+]i) changes measured by microfluorimetry imaging. CAP evoked changes in inward and outward currents were recorded electrophysiologically using excised outside‐out patches and whole cell configurations using various protocols.ResultsOAB BUC had significantly increased expression of TRPV1 compared to NB BUC on Western blot. CAP evoked significantly higher maximal [Ca2+]i change over baseline in OAB (84.71 ± 8.96%) compared to NB BUC (60.32 ± 7.93%) (P < 0.05). CAP induced significantly greater percent change in single channel open probability (205.94 ± 20.53% OAB vs. 141.26 ± 16.53% NB, P < 0.05) and normalized inward currents (13.54 ± 1.6 4 pA/pF OAB vs. 8.28 ± 0.89 pA/pF NB, P < 0.05). CAP caused significantly higher percent increase from baseline of whole cell outward currents in OAB (177.12 ± 44.46%) compared to NB BUC (135.98 ± 44.28%) (P < 0.05). Similarly thermal stimulus (45°C solution) evoked significantly higher percent increase in whole cell outward currents in OAB (183.93 ± 14.07%) compared to NB (145.61 ± 10.12%) BUC (P < 0.05). These responses were blocked by 10 µM capsazepine (CPZ), a TRPV1 antagonist.ConclusionsBecause only a few subjects were studied, augmented TRPV1 signaling cannot be generalized to all OAB subjects. However, the findings are consistent with the hypothesis that BUC are involved in sensory signaling. 30:606–611, 2011. © 2011 Wiley‐Liss, Inc.
Ovarian cancer arising in endometrioid cysts: ultrasound findings
Authors: Testa A. C. , Timmerman D. , Van Holsbeke C. , Zannoni G. F. , Fransis S. , Moerman P. , Vellone V. , Mascilini F. , Licameli A. , Ludovisi M. , Di Legge A. , Scambia G. , Ferrandina G. 
Published: February 2011

AbstractObjectivesTo describe sonographic characteristics of malignant transformation in endometrioid cysts.MethodsWomen with a histological diagnosis of ovarian endometrioid cysts, borderline tumors arising in endometrioid cysts and carcinoma arising in endometrioid cysts, preoperatively examined sonographically, were included in this retrospective study. Gray‐scale and Doppler ultrasound characteristics of the endometrioid cysts were compared with those of the borderline tumors and primary cancers arising in endometrioid cysts. The performance of an experienced examiner in classifying the masses was also assessed.ResultsOf 324 cases collected for the study, 309 (95.3%) lesions were classified as endometrioid cysts, four (1.2%) as borderline tumors arising in endometrioid cysts and 11 (3.4%) as carcinoma arising in endometrioid cysts. Women with malignant findings (borderline ovarian tumors and cancers) were older (median age 52 (range, 28–79) years) than those with benign endometrioid cysts (median age 34 (range, 18–76) years) (P < 0.0001), and the prevalence of postmenopausal status was significantly higher in malignant cases. All (15/15) malignant tumors vs. 16% (50/309) of benign tumors were characterized by the presence of solid tissue (P < 0.0001). The prevalence of solid tissue with positive Doppler signals was higher in malignant tumors (100%) than in benign cysts (7.8%) (P < 0.0001). Papillary projections were a more frequent sonographic feature among malignant lesions (86.7%) than among benign endometrioid cysts (11.3%) (P < 0.0001); power Doppler signals were detected within the projections in 92.3% and 37.1% of malignant and benign lesions, respectively. The examiner correctly diagnosed 94.8% (293/309) of benign lesions as benign and 93.3% (14/15) of malignant lesions as malignant. The risk estimation of the examiner was ‘uncertain’ in three (20%) and ‘probably/certainly malignant’ in 12 (80%) of 15 malignant cases.ConclusionBorderline tumors and carcinomas arising in endometrioid cysts show a vascularized solid component at ultrasound examination. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd.
Genetic diversity and structure of a Mediterranean endemic plant in Corsica (Mercurialis corsica, Euphorbiaceae)
Authors: Migliore Jérémy , Baumel Alex , Juin Marianick , Diadema Katia , Hugot Laetitia , Verlaque Régine , Médail Frédéric 
Published: February 2011

AbstractThe island of Corsica is a Mediterranean hotspot of plant biodiversity characterized by a high rate of plant endemism, but also by a lack of studies combining genetic diversity and conservation. In Corsica, the dioecious and Corso‐Sardinian endemicMercurialis corsicaCosson (Euphorbiaceae) occurs across a wide ecological gradient, but the number of populations have decreased considerably over the last century. The main aim of this study was to examine the patterns of genetic diversity occurring in the Corsican populations ofM. corsica, depending on their location and demographic structure. The rDNA sequences did not show the existence of any polymorphism, whereas the cpDNA sequences revealed the divergence of the western Corsican populations. By contrast, when the AFLP markers were examined, although significant levels of differentiation were detected between populations, no distinct geographical patterns were observed except for the pronounced isolation of the Cap Corse genotypes. No significant correlations were found to exist between population size and the genetic diversity indexes used. The results of this study suggest thatM. corsicahas undergone a complex gene flow history involving past population admixtures, followed by fragmentation processes resulting in population differentiation but no geographical patterns of isolation. These results support the existence of three evolutive conservation units which have to be monitored in priority to determine whether the current pattern of demographic structure is still declining or has stabilized.
Ezetimibe Treatment Lowers Indicators of Oxidative Stress in Hypercholesterolemic Subjects with High Oxidative Stress
Authors: Kostapanos Michael S. , Spyrou Athanasia T. , Tellis Constantinos C. , Gazi Irene F. , Tselepis Alexandros D. , Elisaf Moses , Liberopoulos Evangelos N. 
Published: February 2011

AbstractEzetimibe effectively reduces low‐density lipoprotein cholesterol (LDL‐C). In this study, we tested the hypothesis that ezetimibe monotherapy may also decrease markers of oxidative stress in subjects with hypercholesterolemia. Subjects with hypercholesterolemia and no evidence of cardiovascular disease were randomly allocated to open‐label ezetimibe monotherapy 10 mg/day (EZT group) or therapeutic lifestyle changes (TLC group). At baseline and 12 weeks post‐treatment serum lipoprotein and apolipoprotein levels as well as oxidative stress parameters, including oxidized LDL (ox‐LDL), 8‐isoprostanes (8‐epiPGF2a) and reactive oxygen metabolites (d‐ROMs) levels, were blindly determined. A total of 60 patients were included; 30 in each group. Despite a significant decrease in ox‐LDL levels (by 20.8%, p < 0.001 vs. baseline; p < 0.001 vs. TLC group) in the EZT group no change in the ratio ox‐LDL to LDL‐C was noticed following ezetimibe treatment. No significant change in 8‐epiPGF2a and d‐ROMs levels was observed in the EZT group. Of note, a significant decrease in 8‐epiPGF2a and d‐ROMs levels (by 20.4% and 18.2%, respectively, p < 0.01 vs. baseline for both), was noted among patients in the EZT group who exhibited ‘high oxidative stress' at baseline. No change in any of oxidative stress parameters was noted in the TLC group. Ezetimibe may decrease markers of oxidative stress in hypercholesterolemic subjects. This benefit may be more profound among patients who exhibit ‘high oxidative stress' at baseline.
Effect of Extended Surfactant Structure on Interfacial Tension and Microemulsion Formation with Triglycerides
Authors: Phan T. T. , Attaphong C. , Sabatini D. A. 
Published: February 2011

AbstractIn this work, the impacts of extended surfactant structure (number of polypropylene oxide PO groups and branching nature of the hydrocarbon chain) on microemulsion formation and IFT values were examined with triglyceride oils. The results show that branching of the hydrocarbon tail of extended surfactants lowers optimum salinity and IFT values. The results also show that for the surfactants studied ultralow IFTs and microemulsion formation with vegetable oils can be achieved using extended surfactants with at least eight PO groups.
Losses of Expected Lifetime in the United States and Other Developed Countries: Methods and Empirical Analyses
Authors: Shkolnikov Vladimir M. , Andreev Evgeny M. , Zhang Zhen , Oeppen James , Vaupel James W. 
Published: February 2011

Abstract
Patterns of diversity in age at death are examined using e†, a dispersion measure that equals the average expected lifetime lost at death. We apply two methods for decomposing differences in e†. The first method estimates the contributions of average levels of mortality and mortality age structures. The second (and newly developed) method returns components produced by differences between age- and cause-specific mortality rates. The United States is close to England and Wales in mean life expectancy but has higher life expectancy losses and lacks mortality compression. The difference is determined by mortality age structures, whereas the role of mortality levels is minor. This is related to excess mortality at ages under 65 from various causes in the United States. Regression on 17 country-series suggests that e† correlates with income inequality across countries but not across time. This result can be attributed to dissimilarity between the age- and cause-of-death structures of temporal mortality reduction and intercountry mortality variation. It also suggests that factors affecting overall mortality decrease differ from those responsible for excess lifetime losses in the United States compared with other countries. The latter can be related to weaknesses of health system and other factors resulting in premature death from heart diseases, amenable causes, accidents and violence.
The least common multiple of consecutive arithmetic progression terms
Authors: Hong Shaofang , Qian Guoyou 
Published: February 2011

AbstractLet k ≥ 0, a ≥ 1 and b ≥ 0 be integers. We define the arithmetic function gk,a,b for any positive integer n byIf we let a = 1 and b = 0, then gk,a,b becomes the arithmetic function that was previously introduced by Farhi. Farhi proved that gk,1,0 is periodic and that k! is a period. Hong and Yang improved Farhi's period k! to lcm(1, 2, … , k) and conjectured that (lcm(1, 2, … , k, k + 1))/(k + 1) divides the smallest period of gk,1,0. Recently, Farhi and Kane proved this conjecture and determined the smallest period of gk,1,0. For the general integers a ≥ 1 and b ≥ 0, it is natural to ask the following interesting question: is gk,a,b periodic? If so, what is the smallest period of gk,a,b? We first show that the arithmetic function gk,a,b is periodic. Subsequently, we provide detailed p-adic analysis of the periodic function gk,a,b. Finally, we determine the smallest period of gk,a,b. Our result extends the Farhi–Kane Theorem from the set of positive integers to general arithmetic progressions.