bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and Structural Characterization of Cobalt, Nickel and Copper Phosphanylthiolato Complexes
Authors: Fernández Patricia , Sousa‐Pedrares Antonio , Romero Jaime , Durán María L. , Sousa Antonio , Pérez‐Lourido Paulo , García‐Vázquez José A. 
Published: December 2009

AbstractNeutral cobalt, nickel and copper complexes of a series of phosphanylthiol ligands PhnP(C6H4SH‐2)3–n (n = 1, 2) have been synthesized and characterized by IR and NMR (1H and 31P) spectroscopy, FAB mass spectrometry and X‐ray structural analysis. All of the compounds, with the exception of [Co{Ph2PC6H4S‐2}2], were synthesized by electrochemical oxidation of the anodic metal (cobalt, nickel or copper) in an acetonitrile solution of the appropriate ligand and a small amount of tetramethylammonium perchlorate as an electrolytic carrier. The presence of an additional coligand (PPh3, dppe, dppm or bipy) in the cell led to the synthesis of mixed complexes in one step. The crystal structures of [Co{Ph2P(O)C6H4S‐2}2] (1), [Co2{PhP(C6H4S‐2)2}2(μ‐N2)(bipy)2] (2), [Ni2{PhP(C6H4S‐2)2}2] (3), [Ni2{PhP(C6H4S‐2)2}2(μ‐dppe)]·CH2Cl2 (4), [Cu2{Ph2PC6H4S‐2}2(PPh3)2] (5), [Cu2{PhP(C6H4S‐2)2}(PPh3)2(CH3CN)] (6), [Cu2{Ph2PC6H4S‐2}2(μ‐dppe)] (7) and [Cu2{Ph2PC6H4S‐2}2(μ‐dppm)] (8) are discussed.
Synthesis and anti‐bacterial activity of new series of 4‐(substituted biphenyl‐4‐yl)‐6‐methyl‐2‐oxo/thioxo‐1,2,3, 4‐tetrahydro‐pyrimidine‐5‐carboxylic acid ethyl ester
Authors: Nagawade Rahul R. , Shinde Devanand B. 
Published: December 2009

Abstract
magnified imageNew series of 4‐(substituted biphenyl‐4‐yl)‐6‐methyl‐2‐oxo‐1,2,3,4‐tetrahydro‐pyrimidine‐5‐carboxylic acid ethyl ester and 4‐(substituted biphenyl‐4‐yl)‐6‐methyl‐2‐thioxo‐1,2,3,4‐tetrahydro‐pyrimidine‐5‐carboxylic acid ethyl ester has been synthesized and the structures of the new compounds were established on the basis of 1H NMR, Mass (ES/MS), elemental analysis, and melting point. In‐vitro antibacterial activity (MIC activity) was evaluated and compared with standard drugs ciprofloxacin, sparfloxacin, and trovafloxacin. Most of the compounds in this new series have shown moderate antibacterial activity against both Gram‐positive and Gram‐negative organisms. J. Heterocyclic Chem., (2010).
Hepatitis C virus recombinants are rare even among intravenous drug users
Authors: Viazov Sergei , Ross Stefan S. , Kyuregyan Karen K. , Timm Joerg , Neumann‐Haefelin Christoph , Isaeva Olga V. , Popova Oksana E. , Dmitriev Petr N. , El Sharkawi Fathia , Thimme Robert , Michailov Michail I. , Roggendorf Michael 
Published: December 2009

AbstractSystematic studies of the circulation of hepatitis C virus (HCV) recombinants in different parts of the world have been initiated only recently, and no detailed information on this subject is available. The aim of the current investigation was to determine the frequency of HCV recombinants in intravenous drug users (IVDU) from two European countries. HCV RNA from serum samples was tested by RT‐PCR with primers derived from the core and NS5B regions with subsequent sequencing and genotype assignment. The 118 samples from Germany (100%) and 45 out of 47 (96%) sera from Russia demonstrated concordant genotyping results. In the two genotype discrepant sera from Russia 2k/1b recombinants were identified. In order to test the hypothesis that the individuals from the IVDU group might be multiply exposed to various genotypes, 145 out of 165 genotyped serum samples, which were found to be positive for anti‐NS4 antibodies, were serotyped with the Murex HCV serotyping kit that is based on detection of antibodies to type‐specific peptides derived from the NS4 proteins of different HCV genotypes. Discrepancy in genotype and serotype attributions was observed in 11% cases. Retesting of 99 type 1a or 3a samples with a set of type‐ and subtype‐specific primers revealed the presence of a mixed infection only in one case (1a/3a). Thus, the cases of the mixed infection with different HCV genotypes as well as the recombinant forms of HCV are very rare even in such a highly exposed group as IVDU. J. Med. Virol. 82:232–238, 2010. © 2009 Wiley‐Liss, Inc.
Emergence of new norovirus variants and genetic heterogeneity of noroviruses and sapoviruses in children admitted to hospital with diarrhea in Thailand
Authors: Khamrin Pattara , Maneekarn Niwat , Thongprachum Aksara , Chaimongkol Natthawan , Okitsu Shoko , Ushijima Hiroshi 
Published: December 2009

AbstractEnteric caliciviruses, including noroviruses (NoVs) and sapoviruses (SaVs), are recognized as important etiologic agents of acute gastroenteritis with considerable genetic diversity. In this study, fecal specimens collected from 147 infants and young children admitted to hospital with acute gastroenteritis in 2005 in Chiang Mai, Thailand, were screened for NoVs and SaVs by reverse transcription‐multiplex polymerase chain reaction (RT‐multiplex PCR). Ten isolates (6.8%) belonged to NoV GII genogroup and five (3.4%) were positive for SaVs. GII/4 was the most predominant genotype of NoVs, followed by GII/15, GII/6, and GII/12. Surprisingly, NoVs GII/1, GII/2, GII/3, GII/7, and GII/16 genotypes, which were detected previously during the 2002–2004 survey, were not detected in 2005. Conversely, NoVs GII/6, GII/12, and GII/15 appeared in 2005 but were not detected during the 2002–2004 survey. The only genotype found to be common, as the most predominant genotype, in both surveys was NoV GII/4. Similar findings were also observed for SaVs, that is, the GI/2 and GIV detected during 2002–2004 were not detected in 2005, while GI/5 and GII/3 detected in 2005 were not detected previously during the 2002–2004 surveillance. In addition, comprehensive genetic evolutionary analysis of NoV GII/4 genotype demonstrated that the majority of GII/4 detected in this study (CMH002/05, CMH005/05, CMH042/05, and CMH083/05) were classified as new NoV variants and fell into subtype GII/4‐d (Hunter'04‐like cluster). Only one NoV GII/4 strain (CMH142/05) belonged to subtype GII/4‐e. The data indicated heterogeneity and highly dynamic genotypic distribution of NoVs and SaVs circulating in children admitted to hospital with acute gastroenteritis in Chiang Mai, Thailand. J. Med. Virol. 82:289–296, 2010. © 2009 Wiley‐Liss, Inc.
Identification, quantitation, and method validation for flavan‐3‐ols in fermented ready‐to‐drink teas from the Italian market using HPLC‐UV/DAD and LC‐MS/MS
Authors: Cordero Chiara , Canale Francesca , Rio Daniele Del , Bicchi Carlo 
Published: December 2009

AbstractThe present study is focused on flavan‐3‐ols characterizing the antioxidant properties of fermented tea (Camellia sinensis). These bioactive compounds, object of nutritional claims in commercial products, should be quantified with rigorous analytical procedures whose accuracy and precision have been stated with a certain level of confidence. An HPLC‐UV/DAD method, able to detect and quantify flavan‐3‐ols in infusions and ready‐to‐drink teas, has been developed for routine analysis and validated by characterizing several performance parameters. The accuracy assessment has been run through a series of LC‐MS/MS analyses. Epigallocatechin, (+)‐catechin, (−)‐epigallocatechingallate, (−)‐epicatechin, (−)‐gallocatechingallate, (−)‐epicatechingallate, and (−)‐catechingallate were chosen as markers of the polyphenolic fraction. Quantitative results showed that samples obtained from tea leaves infusion were richer in polyphenolic antioxidants than those obtained through other industrial processes. The influence of shelf‐life and packaging material on the flavan‐3‐ols content was also considered; markers decreased, with an exponential trend, as a function of time within the shelf life while packaging materials demonstrated to influence differently the flavan‐3‐ol fraction composition over time. The method presented here provides quantitative results with a certain level of confidence and is suitable for a routine quality control of iced teas whose antioxidant properties are object of nutritional claim.
Efficient removal of unwanted signals in NMR spectra using the filter diagonalization method
Authors: Dai Bin , Eads Charles D. 
Published: December 2009

AbstractIt is often desirable to selectively remove corrupting or uninteresting signals from complex NMR spectra without disturbing overlapping or nearby signals. For biofluids in particular, removal of solvent and urea signals is important for retaining quantitative accuracy in NMR‐based metabonomics. This article presents a novel algorithm for efficient filtering of unwanted signals using the filter diagonalization method (FDM). Unwanted signals are modeled in the time domain using FDM. This modeled signal is subtracted from the original free induction decay. The resulting corrected signal is then processed using established workflow. The algorithm is found to be reliable and fast. By eliminating large, broad, uninteresting signals, many spectra can be subjected to fully automated absolute value processing, allowing objective preparation of spectra for pattern recognition analysis. Copyright © 2009 John Wiley & Sons, Ltd.
Developmental competence of morphologically poor oocytes in relation to follicular size and oocyte diameter in the pig
Authors: Kim Jinyoung , You Jinyoung , Hyun Sang‐Hwan , Lee Gene , Lim Jeongmook , Lee Eunsong 
Published: December 2009

AbstractThe objective of this study was to assess the practical usefulness of morphologically poor oocytes (MPCOCs) in relation to follicular size and oocyte diameter. Oocytes collected from medium (3–8 mm in diameter) and small (<3 mm) follicles were classified into five categories of morphologically good oocytes (MGCOCs) from medium follicles (MA, control), MPCOCs with larger and smaller diameters from medium follicles (ML and MS, respectively), and those from small follicles (SL and SS, respectively). The oocytes were examined for maturation and developmental competence after parthenogenesis and somatic cell nuclear transfer (SCNT). Nuclear maturation of ML oocytes (91%) was similar to that of control oocytes (94%), but higher than MS (80%), SL (79%), and SS (63%) oocytes. This pattern was also observed in the intracellular glutathione level, p34cdc2 kinase activity, and gene (CDK1, PCNA, and ERK2) expression levels in in vitro‐matured oocytes. ML oocytes showed a similar proportion of blastocyst formation (20%) after SCNT to control oocytes (21%). In addition, the use of ML oocytes resulted in a 50% farrowing rate with 1.8% efficiency of piglet production after SCNT embryo transfer, while control oocytes showed a 60% farrowing rate with 2.4% production efficiency. Our results demonstrate that MPCOCs, if appropriately selected, have a comparable ability to MGCOCs in supporting not only in vitro blastocyst formation, but also development to term in vivo after SCNT. These oocytes can be used as a source for in vitro production of embryos with normal in vivo viability in pigs. Mol. Reprod. Dev. 77: 330–339, 2010. © 2009 Wiley‐Liss, Inc.
Rocking vibrations of a rigid embedded foundation in a poroelastic half‐space
Authors: Hu X. Q. , Cai Y. Q. , Ding G. Y. , Wang J. 
Published: December 2009

AbstractThis paper presents an analysis of the rocking vibrations of a rigid cylindrical foundation embedded in poroelastic soil. The foundation is subjected to time‐harmonic rocking excitation and is perfectly bonded to the surrounding soil. The soil underlying the foundation base is represented by a homogeneous poroelastic half‐space, whereas the soil along the side of the foundation is modeled as an independent poroelastic stratum composed of a series of infinitesimally thin layers. The behavior of the soil is governed by Biot's poroelastodynamic theory. The contact surface between the foundation base and the poroelastic soil is assumed to be smooth and either fully permeable or impermeable. The dynamic interaction problem is solved by employing a simplified analytical method. Some numerical results for the nondimensional rocking dynamic impedance and nondimensional angular displacement amplitude of the foundation are presented to show the effect of nondimensional frequency of excitation, poroelastic material parameters, hydraulic boundary condition, depth ratio and mass ratio of the foundation. Copyright © 2009 John Wiley & Sons, Ltd.
Analysis of micro fracture in human Haversian cortical bone under transverse tension using extended physical imaging
Authors: Budyn É. , Hoc Thierry 
Published: December 2009

AbstractWe propose a procedure to investigate local stress intensity factors at the scale of the osteons in human Haversian cortical bone. The method combines a specific experimental setting for a three‐point bending millimetric specimen and a numerical method using the eXtended Finite Element Method (X‐FEM). The interface between the experimental setting and the numerical method is ensured through an imaging technique that analyses the light microscopy observations to import the geometrical heterogeneity of the Haversian microstructures, the boundary conditions and appearing crack discontinuities into the numerical model. The local mechanical elastic Young's moduli are measured by nano‐indentation, and the Poisson ratios are determined by an imaging technique of the stress–strain fields. The model is able to access three scales of measurement: the macro scale of the material level (mm), the micro scale inside the Haversian material for stress–strain fields (10–100µm), and the sub‐micro scale for the crack opening profiles (1–10µm ) and fracture parameters (stress intensity factors). The model is applied to several patients at different aging stages. Copyright © 2009 John Wiley & Sons, Ltd.
Oxygen‐sensing properties of 5,10,15,20‐tetraphenylporphinato platinum(II) and palladium(II) covalently bound on poly(isobutyl‐co‐2,2,2‐trifluoroethyl methacrylate)
Authors: Obata Makoto , Matsuura Noriko , Mitsuo Kazunori , Nagai Hiroki , Asai Keisuke , Harada Masafumi , Hirohara Shiho , Tanihara Masao , Yano Shigenobu 
Published: December 2009

AbstractA novel methacrylate monomer bearing 5,10,15,20‐tetraphenylporphyrinato palladium(II) (PdTPP) (monomer 1a) was synthesized and copolymerized with isobutyl methacrylate (IBM) and 2,2,2‐trifluoroethyl methacrylate (TFEM) to give poly (IBM‐co‐TFEM) bearing PdTPP (copolymer 2a) as a dye‐conjugated oxygen‐permeable polymer for pressure‐sensitive paint applications. The introduction of PdTPP into copolymer 2a was confirmed by UV–vis spectroscopy and extended X‐ray absorption fine structure analysis. The Stern–Volmer plots of the copolymer 2a and a mixture of PdTPP and poly(IBM‐co‐TFEM) both showed downward curvature, unlike that of the platinum complex analogue (copolymer 2b) previously reported. The plots were successfully fitted with a two‐site model to give two distinct Stern–Volmer constants (KSV1 and KSV2) and the partition ratio f1. Interestingly, the f1 values for the copolymer 2a were almost constant at about 0.98, whereas those of the mixture of PdTPP and poly(IBM‐co‐TFEM) increased from 0.889 to 0.967 as the temperature was increased. This finding suggests that there are two distinct microheterogeneities, one temperature‐dependent and the other temperature‐independent, in the mixture of PdTPP and poly(IBM‐co‐TFEM). The dye‐conjugation approach effectively eliminates the temperature‐dependent, but not the temperature‐independent microheterogeneity. The luminescence decays of copolymers 2a and 2b and the corresponding mixtures in the absence of oxygen indicated that the temperature‐dependent microheterogeneity involves an oxygen diffusion process, whereas the temperature‐independent one appears to be inherent nature in PdTPP. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 663–670, 2010
Polyester/organo‐graphite oxide composite: Effect of organically surface modified layered graphite on structure and physical properties of poly(ε‐caprolactone)
Authors: Hua Lei , Kai Weihua , Liang Zhichao , Inoue Yoshio 
Published: December 2009

AbstractSilylated graphite oxide (sGO) was selected as suitable filler to improve the mechanical and electrical conductive properties of poly(ε‐caprolactone) (PCL). The composites of PCL and sGO were prepared by solution blending method. By modifying the surface of GO with silylation reagent (octyltrichlorosilane), the interlayer space of graphite oxide (GO) was increased and an excellent dispersion of the modified GO in the organic solvent and into the PCL matrix was achieved. The structures and physical properties of the sGO/PCL composites were characterized by the fourier transform infrared (FTIR), thermogravimetric analysis (TGA), wide angle X‐ray diffraction (WAXD) analysis, differential scanning calorimeter (DSC), tensile tests, dynamic mechanical analysis (DMA), and volume resistivity measurements. It indicated that the PCL/sGO composites formed an exfoliated structure from the WAXD study. The tensile strength and Young′s modulus of PCL increased with the addition of sGO. It was also found that a small amount of the sGO platelets in the composite could act as a nucleating agent and accelerated the crystallization of PCL. Further, the addition of the sGO platelets into the PCL matrix increased the volume electrical conductivity of PCL. © 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 294–301, 2010
The hydrogen bond and free volume property of poly(ether‐urethane) irradiated by neutron
Authors: Chen Z. , Huang W. , Fang P. F. , Yu W. , Wang S. J. , Xiong J. , Xu Y. S. 
Published: December 2009

AbstractPoly(ether‐urethane) (PEU) was irradiated by neutron in different atmospheres. The hydrogen bonding interaction was analyzed by Fourier transform infrared (FTIR), and the microstructure of PEU had been investigated by positron annihilation lifetime spectroscopy (PALS). The gas products were detected by gas chromatography after irradiation. The results demonstrated that the irradiation led to more hydrogen bonded carbonyl in PEU, smaller relative free volume fraction, and narrower free volume distribution. It suggested that increasing hydrogen bonds would result in the collapse of free volume. The irradiation induced micro‐phase merging together and the presence of oxygen would accelerate this tendency, which was revealed by PALS. All the results indicated that the chain relaxation led to more hydrogen bonds, and the hydrogen bonding interaction suppressed the free volume. © 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 381–388, 2010
Women with advanced breast cancer and their spouses: diversity of support and psychological distress
Authors: Hasson‐Ohayon Ilanit , Goldzweig Gil , Braun Michal , Galinsky Daliah 
Published: December 2009

AbstractObjective: The current study examines the effect of perceived support from different agents (spouse, family, friends, religion—spirituality) on psychological distress experienced by women with advanced breast cancer and their male spouses.Methods: In all, 150 couples consisting of women with advanced breast cancer and their spouses completed the Cancer Perceived Agent of Support Questionnaire and the Brief Symptom Inventory Scale.Results: Spouses reported more psychological distress (global, depression and anxiety) than patients. Both patients and spouses report a similar level of spousal support, and spouses reported a lower level of support provided from family and friends. Perceived support in the current study contributed significantly to the explanations of global psychological distress, depression and anxiety both for patients and their spouses. However, the specific agents of support that were significant in explaining these outcomes varied between patients and their spouses. For patients, family support received by both patient and partner was the most important source of support, protecting from psychological distress, while for the male partners, support from friends was most important. Religious‐based support was found to contribute negatively to the psychological distress of the patient and spouse.Conclusions: This study emphasizes the role of breast cancer spouses as care receivers in parallel to their role as caregivers, which is especially important in light of the high psychological distress reported by the spouses. The findings support the buffering effect, which different agents of support have against psychological distress while facing cancer for both patients and spouses. Patients and spouses differ with regard to the agents of support possessing this buffering effect. Copyright © 2009 John Wiley & Sons, Ltd.
Fetal interrupted aortic arch: 2D‐4D echocardiography, associations and outcome
Authors: Volpe P. , Tuo G. , De Robertis V. , Campobasso G. , Marasini M. , Tempesta A. , Gentile M. , Rembouskos G. 
Published: December 2009

AbstractObjectivesTo analyze fetal two‐dimensional (2D) echocardiographic characteristics of interrupted aortic arch (IAA) and its different types, to explore whether the use of 4D ultrasound with B‐flow imaging and spatiotemporal image correlation (STIC) can improve prenatal diagnostic accuracy, and to describe associations and outcome.MethodsThe study comprised IAA fetuses examined exclusively by 2D conventional echocardiography during the period from 1994 to 2003, and those identified by conventional echocardiography and examined further by 4D ultrasound with B‐flow imaging and STIC during the period January 2004 to July 2008, identified among fetuses examined at two referral centers for congenital heart defects (CHD). Postnatal follow‐up was available in all cases. Karyotyping and fluorescent in‐situ hybridization (FISH) analysis for the DiGeorge critical region (22q11.2) were performed in all cases.ResultsTwenty‐two cases of isolated IAA (15 Type B and seven Type A, seven and three of which, respectively, underwent B‐flow imaging and STIC) were detected among 2520 cases of fetal CHD. In seven of the 15 Type B cases, a right subclavian artery arose anomalously (ARSA). 2D echocardiography failed to distinguish the type of IAA in only two cases and the ARSA in five of the seven cases. B‐flow imaging and STIC successfully identified IAA types in all 10 cases examined and clearly visualized the origin and course of the ARSA, including cervical ones. FISH detected 22q11.2 microdeletion in 10 of the 15 Type B cases and an unusual association with Type A in one of the seven cases. Fetal/neonatal outcome included: eight terminations of pregnancy, one intrauterine death and four postoperative deaths in the neonatal period, and nine neonates were alive after surgery at a mean follow‐up time of 58 months (range, 4 months–13 years).ConclusionOur results confirm the feasibility of prenatal characterization of IAA and its different types based on 2D echocardiographic examination, albeit with some limitations in the thorough assessment. 4D ultrasound with B‐flow imaging and STIC can apparently facilitate visualization and detailed examination of the anatomical features of the IAA types, including visualization of the neck vessels, thus supplying additional information with respect to 2D sonography. As for the known association with microdeletion 22q11.2, our data indicate that Types A and B are distinct, there being a close association only with IAA Type B. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.