bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation and properties of bisphenol A‐based bis‐phthalonitrile composite laminates
Authors: Chen Zhiran , Guo Heng , Tang Hailong , Yang Xuli , Xu Mingzhen , Liu Xiaobo 
Published: January 2013

AbstractA series of bisphenol A (BPA)‐based 2,2‐bis‐[4‐(3,4‐dicyanophenoxy)phenyl]propane (BAPh) prepolymers and polymers were prepared using BPA as a novel curing agent. Ultraviolet–visible and Fourier transform infrared spectroscopy spectrum were used to study the polymerization reaction mechanism of the BAPh/BPA polymers. The curing behaviors were studied by differential scanning calorimetry and dynamic rheological analysis, the results indicated that the BAPh/BPA prepolymers exhibit large processing windows (109.5–148.5°C) and low complex viscosity (0.1–1 Pa·s) at moderate temperature, respectively. Additionally, the BAPh/BPA/glass fiber (GF) composite laminates were manufactured and investigated. The flexural strength and modulus of the composite laminates are 548.7–632.8 MPa and 25.7–33.2 GPa, respectively. The thermal stabilities of BAPh/BPA/GF composite laminates were studied by thermogravimetry analysis. The temperatures at 5% weight loss (T5%) of the composite laminates are 508.5–528.7°C in nitrogen and 508.1–543.2°C in air. In conclusion, the BAPh/BPA systems can be used as superior matrix materials for numerous advanced composite applications. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
A State Feedback Control Design for Generalized Fractional Systems Through Orthogonal Functions: Application to a Fractional Inverted Pendulum
Authors: Bouafoura Mohamed Karim , Braiek Naceur Benhadj 
Published: January 2013

AbstractThis paper deals with the control of non commensurate fractional order systems by means of the state feedback strategy. Piecewise orthogonal functions with their generalized operational matrices, rigourously developed according to the Riemann‐Liouville formula are utilized to discover the controller's gains. The way that the control law is deduced permits guaranteed stability for this particular system's class while ensuring the desired performance. Effectiveness of the method is checked through an inverted fractional pendulum benchmark.
Tuning a ménage à trois: Co‐evolution and co‐adaptation of nuclear and organellar genomes in plants
Authors: Greiner Stephan , Bock Ralph 
Published: January 2013

AbstractPlastids and mitochondria arose through endosymbiotic acquisition of formerly free‐living bacteria. During more than a billion years of subsequent concerted evolution, the three genomes of plant cells have undergone dramatic structural changes to optimize the expression of the compartmentalized genetic material and to fine‐tune the communication between the nucleus and the organelles. The chimeric composition of many multiprotein complexes in plastids and mitochondria (one part of the subunits being nuclear encoded and another one being encoded in the organellar genome) provides a paradigm for co‐evolution at the cellular level. In this paper, we discuss the co‐evolution of nuclear and organellar genomes in the context of environmental adaptation in species and populations. We highlight emerging genetic model systems and new experimental approaches that are particularly suitable to elucidate the molecular basis of co‐adaptation processes and describe how nuclear‐cytoplasmic co‐evolution can cause genetic incompatibilities that contribute to the establishment of hybridization barriers, ultimately leading to the formation of new species.
Effects of Au Loading and CO2 Addition on Photocatalytic Selective Phenol Oxidation over TiO2‐Supported Au Nanoparticles
Authors: Ide Yusuke , Ogino Ryo , Sadakane Masahiro , Sano Tsuneji 
Published: January 2013

AbstractThe photocatalytic oxidation of aqueous phenol to hydroquinone on TiO2‐supported Au nanoparticles (Au/P25) and P25 under solar simulator (λ>320 nm) and monochromated light irradiation was conducted in air and under a CO2 atmosphere to investigate the effects of Au loading and CO2 atmosphere on the photocatalysis. The action spectrum in hydroquinone formation on Au/P25 under a CO2 atmosphere was in good agreement with the absorption spectrum of P25. A larger amount of hydroquinone formed and a smaller amount of CO2, which was the completely oxidized product of phenol, evolved if Au was loaded on P25. These observations indicated that this photocatalysis did not involve a visible light‐induced step by the localized surface plasmon resonance of Au and Au loading did not improve the charge separation efficiency on P25 for the reaction. On the other hand, the amount of the surface titanol group on P25 decreased dramatically after Au loading, which was confirmed by analysis of the temperature‐programmed desorption of ammonia curves for P25 and Au/P25. Comparison of the adsorption isotherms of hydroquinone from water on P25 and Au/P25 revealed that the surface modification of P25 with Au reduced the amount of hydroquinone adsorbed from a relatively low concentration solution dramatically. Moreover, the adsorption of hydroquinone from water on Au/P25 under various pH values was investigated to find that there was a partially opposite relationship between the pH‐dependent hydroquinone adsorption and the CO2 pressure‐ (and possibly pH‐)dependent photocatalytic hydroquinone formation on Au/P25. Similar results were obtained for the photocatalytic oxidation of aqueous benzene to phenol on Au/P25 under solar simulator irradiation. All results obtained suggested that Au nanoparticle loading on P25 promoted the desorption of the formed hydroquinone from the surface to prevent the successive oxidation of the product, and the presence of CO2 further promoted the hydroquinone desorption probably by lowering the pH of the reaction solution below the pKa of Au/P25.
Metallic Iron for Water Treatment: A Critical Review
Authors: Noubactep Chicgoua 
Published: January 2013

AbstractWater treatment with metallic iron (Fe0) is still based on the premise that Fe0 is a reducing agent. An alternative concept stipulates that contaminants are removed by adsorption, co‐precipitation, and size‐exclusion in a reactive filtration process. This article underlines the universal validity of the alternative concept. It is shown that admixing non‐expansive material to Fe0 as a pre‐requisite for sustainable Fe0‐based filtration systems. Fe0‐based filters are demonstrated an affordable, appropriate, and efficient decentralized water treatment technology.
ProExC as an adjunct marker to improve cytological detection of urothelial carcinoma in urinary specimens
Authors: Moatamed Neda A. , Rao Jian‐Yu , Alexanian Serge , Cobarrubias Melissa , Levin Mary , Lu David , Apple Sophia K. 
Published: January 2013

BACKGROUNDProEx C is an antibody cocktail targeting the expression of topoisomerase IIα and minichromosome maintenance protein‐2. ProEx C staining is being used to assist in diagnoses of the gynecological specimens. This study was designed to determine the utility of ProEx C in urine cytology samples for improving the detection of urothelial carcinomas where a significant number of urine cytology specimens are diagnosed as “atypia.”METHODSSixty urinary specimens (12 negative, 13 positive, and 35 atypical cases) were stained with ProEx C, and ProEx C results were recorded as positive when nuclear staining was only seen in at least one morphologically atypical urothelial cell.RESULTSAll 12 benign cytology samples showed negative staining with ProEx C. Twelve of 13 cases that had a malignant cytologic diagnosis showed a positive nuclear staining of the malignant cells. Eighteen of 35 cases with atypical cytologic diagnoses showed positive nuclear staining. Of the 35 cases with “atypia,” 17 had a malignant histopathologic follow‐up. In this study, ProEx C stain had an overall sensitivity of 78.4%, specificity of 95.7%%, positive predictive value of 96.7%, and negative predictive value of 73.3% for the detection of urothelial carcinoma.CONCLUSIONSProEx C stain is a useful adjunct test to urine cytologic analysis, even in specimens with limited cellularity. In urinary smears, this test is most useful in stratification of the “atypical” diagnoses into benign and malignant subsets. To the authors' knowledge, this is the first study of ProEx C application in urine cytology as an adjunct marker for detection of urothelial carcinoma. Cancer (Cancer Cytopathol) 2013;121:320–8. © 2013 American Cancer Society.
Can a gene‐expression classifier with high negative predictive value solve the indeterminate thyroid fine‐needle aspiration dilemma?
Authors: Faquin William C. 
Published: January 2013

AbstractThe recent study by Alexander et al validates the effectiveness of the Afirma test, and suggests a potential ancillary role for this unique test when appropriately applied in the evaluation of thyroid nodules classified by fine‐needle aspiration as indeterminate. Cancer (Cancer Cytopathol) 2013. © 2013 American Cancer Society
Raman Spectroscopic Imaging for the Real‐Time Detection of Chemical Changes Associated with Docetaxel Exposure
Authors: Bräutigam Katharina , Bocklitz Thomas , Schmitt Michael , Rösch Petra , Popp Jürgen 
Published: January 2013

AbstractThere is an urgent need for methods allowing for a fast, non‐invasive, sensitive and selective monitoring of the effectiveness of anticancer drugs during the course of a chemotherapeutic treatment of cancer patients. The possibility of predicting and controlling the efficiency of chemotherapeutic agents for every patient individually enables a personalized therapy with largely improved success rates. The results presented herein demonstrate that Raman microspectroscopy is perfectly suited to monitor the impact of chemotherapeutic agents on living cells. The influence of the clinically well‐established chemotherapeutic docetaxel on both the morphology and also biochemistry of living colon cancer cells (HT‐29) has been studied by means of Raman spectroscopy in combination with modern chemometric approaches. The work presented paves the way for establishing Raman spectroscopy as a monitoring tool of the effectiveness of a chemotherapy treatment and can therefore be seen as a step towards personalized therapy.
Effect of talc and water addition on olive oil quality and antioxidants
Authors: Carrapiso Ana I. , García Amparo , Petrón M. Jesús , Martín Lourdes 
Published: January 2013

AbstractThe effect of using water and talc to improve oil yield was examined for the case of the Carrasqueña cultivar for the first time. The influence of these treatments to the antioxidant content (phenols and tocopherols) and quality parameters of the oil are discussed with regard to findings for Picual cultivar (a cultivar extensively studied in the past for various reasons) oils extracted and analyzed under the same conditions. Before the oil extraction the fruits from both cultivars were characterized for the ripening index, flesh/stone ratio, moisture, oil content, and instrumental color of fruits and crushed fruits. Water addition caused a decrease in oil yield and extractability, an increase in the peroxide index and a decrease in K270 and the total phenol content, whereas the instrumental color was scarcely affected. Talc addition resulted in an increase in oil yield and extractability, a decrease in the peroxide index and α‐tocopherol content and a marked effect on the instrumental color measurement. Results show that for both Carrasqueña and Picual cultivars (fruits with a ripening index of 5.14 and 4.92, and a moisture content of 53.0 and 56.2%, respectively) water addition at a 42.9% w/w is not advisable. Conversely, talc addition increases oil yield without affecting negatively the quality parameters, although it decreases α‐tocopherol content and has a marked effect on oil color.Practical applications: This paper shows the effect at a laboratory scale of adding talc and water to olive fruits from two different cultivars on oil yield, some quality parameters, tocopherol and phenol content and color. Results indicate that water addition to the paste during malaxation has important drawbacks such as a negative effect on some quality parameters which are relevant in the official olive oil grading (peroxide index and K270), and also in oil yield and phenol content. Conversely, talc addition has important advantages such as an increase in oil yield without affecting negatively the quality parameters, although it decreases α‐tocopherol content and affects oil color.
Synthesis and Characterization of the O‐Alkylation Products of Resorcinarene
Authors: Salorinne Kirsi , Nauha Elisa , Nissinen Maija , Ropponen Jarmo 
Published: January 2013

AbstractO‐Substitution reactions of tetramethoxyresorcinarene with alkyl halides produced a variety of partially O‐alkylated resorcinarene derivatives with terminal alkyne functionality. The degree of alkylation was affected by the reactivity of the alkylating halide used. NMR spectroscopy proved to be an ideal tool for analyzing the complex reaction mixtures and the isolated products based on the symmetry and degree of alkylation of the resorcinarene derivatives. Single‐crystal X‐ray diffraction studies furthermore showed diversity in the self‐assembly of the various O‐alkylation products that was greatly affected by the degree of alkylation, as well as the nature of the alkyne moiety.
Hyposmolality differentially and spatiotemporally modulates levels of glutamine synthetase and serine racemase in rat supraoptic nucleus
Authors: Wang Yu‐Feng , Sun Min‐Yu , Hou Qiuling , Parpura Vladimir 
Published: January 2013

AbstractProlonged hyposmotic challenge (HOC) has a dual effect on vasopressin (VP) secretion [Yagil and Sladek (1990) Am J Physiol 258(2 Pt 2):R492‐R500]. We describe an electrophysiological correlate of this phenomenon, whereby in vitro HOC transiently reduced the firing activity of VP neurons within the supraoptic nucleus of brain slices, which was followed by a rebound increase of their activity; this was paralleled by changes in the level of proteins relevant to astroglia–neuronal interactions. Hence, in vitro HOC transiently (at 5 min) increased the level of astrocyte‐specific glial fibrillary acidic protein (GFAP), which then declined to control or base level (at 20 min); this was blocked by the gliotoxin L‐aminoadipic acid, but not by tetanus toxin, which was used to inhibit neurotransmission. Similarly, in vivo HOC led to changes in GFAP level, which after an early increase (10 min) returned to normal (30 min). Immunoassays revealed that neuronal, but not astrocytic, expression of serine racemase (SR) was increased at the late stage of HOC in vivo, whereas at an early stage there was a transient increase in level of the astrocyte‐specific glutamine synthetase (GS). Furthermore, there was an increased molecular association between GFAP and GS at 10 min, whereas SR increased its association with the neuronal nuclear antigen NeuN at 30 min. These results suggest that the dual effect of HOC on VP neuronal secretion/activity could be related to metabolic/signaling changes in astrocytes (glutamate–glutamine conversion) and neurons (D‐serine synthesis/ammonia production), which may account for the rebound in VP neuronal activity, presumably by promoting the activation of neuronal glutamate receptors. © 2013 Wiley Periodicals, Inc.
Exploratory study on association of genetic variation in TBC1D1 with antipsychotic‐induced weight gain
Authors: Brandl Eva J. , Tiwari Arun K. , Lett Tristram A. , Shaikh Sajid A. , Lieberman Jeffrey A. , Meltzer Herbert Y. , Kennedy James L. , Müller Daniel J. 
Published: January 2013

BackgroundPrevious studies have shown that antipsychotics with high propensity for antipsychotic‐induced weight gain (AIWG) influence glucose transporter type 4 (GLUT4) mediated glucose intake. Variation in the gene encoding TBC1 domain family member 1 (TBC1D1), a Rab‐GTPase activating protein regulating GLUT4 trafficking, has been associated with obesity. Therefore, we investigated the impact of TBC1D1 polymorphisms on AIWG.MethodsWe analyzed rs9852 and rs35859249 in TBC1D1 in 195 schizophrenia subjects treated mostly with clozapine or olanzapine for up to 14 weeks. Association was tested using analysis of variance and analysis of covariance with change (%) from baseline weight as the dependent variable.ResultsAnalysis of covariance showed a non‐significant trend for lower weight gain in carriers of the T‐allele of rs9852 than in C‐allele homozygotes (p = 0.063). This effect was more pronounced in the subgroup of patients treated with clozapine or olanzapine (p = 0.024). For rs35859249, no significant association with AIWG could be detected.ConclusionsThis is the first study examining the association between TBC1D1 and AIWG. The moderate association of rs9852, located in the 3′UTR near a miRNA binding site, indicates an influence of TBC1D1 on AIWG. Further investigations remain necessary to elucidate the role of this gene in AIWG. Copyright © 2013 John Wiley & Sons, Ltd.
FIELD EVALUATION ON WATER PRODUCTIVITY OF WINTER WHEAT UNDER SPRINKLER OR SURFACE IRRIGATION IN THE NORTH CHINA PLAIN
Authors: Liu Hai‐Jun , Kang Yaohu , Yao Su‐Mei , Sun Ze‐Qiang , Liu Shi‐Ping , Wang Qing‐Gai 
Published: January 2013

ABSTRACTA four‐season experiment was carried out in the North China Plain (NCP) to evaluate crop yield and water productivity of winter wheat (Triticum aestivum L.) under sprinkler and surface irrigation. Results show that leaf area index (LAI) of winter wheat was greater and active leaf area lasted for longer in the sprinkler than in the surface irrigated field. Above‐ground biomass at harvest was 4 ~ 22.1% greater in the sprinkler than in the surface irrigated field, similarly the yield was greater by 11.5 ~ 50.9%. The greater yield was mainly due to the greater weight of 1000 kernels in the sprinkler irrigated field. Seasonal crop evapotranspiration (ET) was lower by 4 ~ 23%, water productivity (WP) was higher by 18 ~ 57% and irrigation water productivity (IWP) was higher by 21 ~ 81% in the sprinkler field than in the surface irrigated field. Statistical analysis of four‐season data by using a generalized linear model showed that the sprinkler irrigation method significantly increased crop yield, WP and IWP, and significantly decreased crop ET. Crop WP and IWP were also significantly affected by climate conditions and agronomic practices. Therefore, the sprinkler irrigation method was recommended as an efficient and water‐saving irrigation method for winter wheat cultivars in the North China Plain. Copyright © 2013 John Wiley & Sons, Ltd.
Effects of chronic caffeine intake in a mouse model of amyotrophic lateral sclerosis
Authors: Potenza Rosa Luisa , Armida Monica , Ferrante Antonella , Pèzzola Antonella , Matteucci Alessandra , Puopolo Maria , Popoli Patrizia 
Published: January 2013

AbstractCaffeine is a nonselective adenosine receptor antagonist; chronic consumption has proved protective toward neurodegenerative diseases such as Parkinson's and Alzheimer's diseases. The present study was designed to determine whether caffeine intake affected survival and/or motor performance in a transgenic model of amyotrophic lateral sclerosis (ALS). SOD1G93A mice received caffeine through drinking water from 70 days of age until death. Body weight, motor performance and survival were evaluated. Furthermore, the expression of adenosine A2A receptors (A2ARs), glial glutamate transporter (GLT1), and glial fibrillar acidic protein (GFAP) were evaluated by Western blotting. The results showed that caffeine intake significantly shortened the survival of SOD1G93A mice (log rank test, P = 0.01) and induced a nonsignificant advancing of disease onset. The expression of A2AR, GLT1, and GFAP was altered in the spinal cords of ALS mice, but caffeine did not influence their expression in either wild‐type or SOD1G93 mice. These data indicate that adenosine receptors may play an important role in ALS. © 2013 Wiley Periodicals, Inc.
Turning Corporate Social Responsibility‐driven Opportunities in Competitive Advantages: a Two‐dimensional Model
Authors: Calabrese Armando , Costa Roberta , Menichini Tamara , Rosati Francesco , Sanfelice Gaetano 
Published: January 2013

Employing corporate social responsibility (CSR) for competitiveness enhancement requires a radical change in managerial thinking and new tools for supporting business activities. Indeed, the lack of suitable measures for detecting the stage of a company CSR cultural development hinders the identification and exploitation of business opportunities related to CSR. Following this lead, in this paper, we propose a two‐dimensional CSR model for supporting managers in their pursuing for long‐term competitiveness, turning CSR‐driven opportunities in business advantages.The model is based on two dimensions: the “CSR development” dimension and the “CSR commitment” dimension. The CSR development dimension allows decision makers to position companies with respect to the stage of their CSR cultural evolution, whereas the CSR commitment dimension assesses companies' degree of commitment based on their economic, legal, ethical, and philanthropic CSR performance. The position that a company occupies in the two‐dimensional CSR model describes both its actual stage of CSR cultural development and its CSR commitment. Finally, the model is employed to a case study in the banking sector. Copyright © 2013 John Wiley & Sons, Ltd.
Morphology and Field‐Effect Transistor Characteristics of Electrospun Nanofibers Prepared From Crystalline Poly(3‐hexylthiophene) and Polyacrylate Blends
Authors: Chou Chih‐Chieh , Wu Hung‐Chin , Lin Chih‐Jung , Ghelichkhani Ebrahim , Chen Wen‐Chang 
Published: January 2013

AbstractThe morphology and field‐effect transistor (FET) characteristics of electrospun (ES) nanofibers prepared from crystalline poly(3‐hexylthiophene) (P3HT) and poly(stearyl acrylates) (PSA) or poly(n‐lauryl acrylate) (PnLA) blends via the coaxial electrospinning technique are reported. The FET mobility of the 1:0.2 P3HT/PSA blend ES nanofibers is 3.21 × 10−2 cm2 V−1 s−1, which is two orders of magnitude higher than that of pure P3HT ES nanofibers (1.92 × 10−4 cm2 V−1 s−1). In addition, the FET hole mobilities of the P3HT/PSA blend ES nanofibers using the other ratios are also larger than that the P3HT. The crystalline PSA promotes P3HT to form a more compact structure in the ES nanofibers as evidenced by DSC, leading to the enhanced FET mobility. Similarly, the mobility of P3HT/PnLA (1:0.2) blend ES nanofiber‐based FETs also improves to 2.40 × 10−2 cm2 V−1 s−1. The strong stretching force and the geometrical confinement associated with the ES process results in oriented P3HT packing, as evidenced by transmission electron microscopy (TEM) and grazing‐incidence wide‐angle X‐ray scattering (GIXS). The P3HT/PSA ES nanofibers form a core‐sheath structure and thus the penetration of moisture and oxygen is prevented, enhancing the air stability of FET devices. The study reveals that P3HT blended with crystalline PSA (or PnLA) can fabricate high‐performance nanofiber‐based FET devices.magnified image