bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: ZnO Nanoparticles: A Green Efficient Catalyst for the Room Temperature Synthesis of Biologically Active 2‐Aryl‐1,3‐benzothiazole and 1,3‐Benzoxazole Derivatives.
Authors: Banerjee Subhash , Payra Soumen , Saha Arijit , Sereda Grigoriy 
Published: February 2015

AbstractThe condensation of 2‐aminothiophenol or 2‐aminophenol with aldehydes proceeds very rapidly in the presence of ZnO nanoparticles as the catalyst to give benzothiazoles or benzoxazoles in excellent yields.
ChemInform Abstract: One‐Pot Copper‐Catalyzed Aerobic Decarboxylative Coupling of Phenylacetic Acids with o‐Aminobenzenes and Dioxygen as the Oxidant Leading to Benzoxazoles and Benzothiazoles.
Authors: Yang Daoshan , Yan Kelu , Wei Wei , Tian Laijin , Shuai Yuanyuan , Li Ruixia , You Jinmao , Wang Hua 
Published: February 2015

AbstractA simple procedure is elaborated for the synthesis of benzoxazoles (III) and benzothiazoles (V) by aerobic decarboxylative coupling of phenylacetic acids (II) with corresponding o‐aminobenzenes.
ChemInform Abstract: Diastereoselective Synthesis of Highly Functionalized cis‐1‐Oxadecalines via 6‐endo‐tet‐Cyclizations of 2‐C‐Branched Sugars.
Authors: Lambu Mallikharjuna Rao , Mukherjee Debaraj 
Published: February 2015

AbstractThe title compounds (IV) are obtained via zinc mediated Barbier reaction of pyranosides (I) with aryl aldehydes followed by FeCl3 catalyzed highly stereoselective 6‐endo‐tet cyclization.
ChemInform Abstract: Efficient Synthesis of Chromenopyridine and Chromene via MCRs.
Authors: Gan Hai‐Feng , Cao Wei‐Wei , Fang Zheng , Li Xin , Tang Shi‐Gui , Guo Kai 
Published: February 2015

AbstractThe temperature dependence of the three‐component reaction of salicylaldehydes, malononitrile and thiols is demonstrated.
ChemInform Abstract: A Facile One‐Pot Synthesis of Chloropyridines from Chalcones.
Authors: Menon Prasanth K. , Krishnaraj K. U. , George Sholly C. , Devaky K. S. , Anabha E. R. 
Published: February 2015

Abstractvia Michael addition of malononitrile (II) to iminoalkylated chalcones (I) under Vilsmeier‐Haack reaction conditions
ChemInform Abstract: Synthesis of 5‐Amino‐3,3‐dimethyl‐7‐phenyl‐3H‐[1,2]oxathiolo [4,3‐b]pyridine‐6‐carbonitrile 1,1‐Dioxides.
Authors: Chioua Mourad , Samadi Abdelouahid , Postel Denis , Balzarini Jan , Marco‐Contelles Jose 
Published: February 2015

Abstractvia Michael reaction of dioxides (I) with malononitriles (II) using piperidine as catalyst
ChemInform Abstract: Photo‐Assisted Multi‐Component Reactions (MCR): A New Entry to 2‐Pyrimidinethiones.
Authors: Guo Haiheng , Zhu Chenghao , Li Jian , Xu Guangyang , Sun Jiangtao 
Published: February 2015

AbstractThe title photocatalytic multi‐component dehydrogenative condensation reaction of aldehydes, thiourea, and cyclic ethers yields novel tetrahydropyrimidinethiones in good to excellent diastereoselectivities.
ChemInform Abstract: Microwave‐Assisted One‐Pot Synthesis of Substituted 3‐Bromoimidazo[1,2‐]pyridines and Imidazoheterocycles.
Authors: Patil Shashikant M. , Mascarenhas Malcolm , Sharma Rajiv , Mohana Roopan S. , Roychowdhury Abhijit 
Published: February 2015

AbstractThe synthesis of the title compounds involves an electrophilic aromatic bromination using bromodimethylsulfonium ion generated in situ via oxidation of HBr salt by DMSO.
ChemInform Abstract: Rhodium(III)‐Catalyzed C—H Activation/[4 + 3] Annulation of N‐Phenoxyacetamides and α,β‐Unsaturated Aldehydes: An Efficient Route to 1,2‐Oxazepines at Room Temperature.
Authors: Duan Pingping , Lan Xia , Chen Ying , Qian Shao‐Song , Li Jie Jack , Lu Liang , Lu Yanbo , Chen Bo , Hong Mei , Zhao Jing 
Published: February 2015

AbstractThe Rh‐catalyzed annulation of N‐phenoxyacetamides (I) with α,β‐unsaturated aldehydes (II) leads to desired 1,2‐oxazepines (III) in good to high yields.
ChemInform Abstract: Antiinflammatory Triterpenes from Euonymus alatus Leaves and Twigs on Lipopolysaccharide‐Activated RAW264.7 Macrophage Cells.
Authors: Jeong Eun Ju , Bae Ji‐Yeong , Rho Jung‐Rae , Kim Young Choong , Ahn Mi‐Jeong , Sung Sang Hyun 
Published: February 2015

AbstractThe new reissantane‐type triterpene (I) is isolated from the leaves and twigs of Euonymus alatus together with 8 known triterpenes.
ChemInform Abstract: An aza‐Michael Addition Protocol to Fluoroalkylated β‐Amino Acid Derivatives and Enantiopure Trifluoromethylated N‐Heterocycles.
Authors: Yang Xing , Chen Zhuo , Cai Yuan , Huang Yi‐Yong , Shibata Norio 
Published: February 2015

AbstractThe aza‐Michael addition proceeds with electrophile trifluoromethyl derivatives without solvent or catalyst.
Study of balance of images using visual weight
Authors: Parada‐Castellano Raúl 
Published: February 2015

AbstractThe purpose of this research is to analyze the factors that create a sensation of balance or unbalance when a color image is observed depending on the light transmitted, reflected, and/or emitted by the objects that appear in it. This study is carried out by calculating the center of gravity (CG) of each image. The weight and the CG are obtained by calculating the force resulting from the different visual weights that make up the visual image and its position on this. When the visual CG and the geometric center coincide, it is recognized that the image is balanced. The action that acts on the balance of the lightness of an image is labeled as the visual weight. The visual weight of a figure is defined from the amount of visible light coming from it and the space occupied by this in the visual image. The colors show us the amount of light coming from a figure, while the shape provides us with information about the space that it occupies. The study explores how the qualities of appearance of three‐dimensional objects affect visual weight and how it can vary due to changes in light, motion of objects or the perspective of the image. Since these calculations can be very complex, we have developed the software called “PesoVisual” that automatically performs these operations on digital color images. Similarly, this software enables the analysis of the variability of the visual image. © 2015 Wiley Periodicals, Inc. Col Res Appl, 41, 175–187, 2016
Anti‐diabetic and neuroprotective effects of pancreatic islet transplantation into the central nervous system
Authors: Lazard Daniel , Vardi Pnina , Bloch Konstantin 
Published: February 2015

SummaryDuring the last decades, the central nervous system (CNS) was intensively tested as a site for islet transplantation in different animal models of diabetes. Immunoprivilege properties of intracranial and intrathecal sites were found to delay and reduce rejection of transplanted allo‐islets and xeno‐islets, especially in the form of dispersed single cells. Insulin released from islets grafted in CNS was shown to cross the blood–brain barrier and to act as a regulator of peripheral glucose metabolism. In diabetic animals, sufficient nutrition and oxygen supply to islets grafted in the CNS provide adequate insulin response to increase glucose level resulting in rapid normoglycemia. In addition to insulin, pancreatic islets produce and secrete several other hormones, as well as neurotrophic and angiogenic factors with potential neuroprotective properties. Recent experimental studies and clinical trials provide a strong support for delivery of islet‐derived macromolecules to CNS as a promising strategy to treat various brain disorders. This review article focuses mainly on analysis of current status of intracranial and intrathecal islet transplantations for treatment of experimental diabetes and discusses the possible neuroprotective properties of grafted islets into CNS as a novel therapeutic approach to brain disorders with cognitive dysfunctions characterized by impaired brain insulin signalling. Copyright © 2015 John Wiley & Sons, Ltd.
Mesenchymal condensation‐dependent accumulation of collagen VI stabilizes organ‐specific cell fates during embryonic tooth formation
Authors: Mammoto Tadanori , Mammoto Akiko , Jiang Amanda , Jiang Elisabeth , Hashmi Basma , Ingber Donald E. 
Published: February 2015

Background:Mechanical compression of cells during mesenchymal condensation triggers cells to undergo odontogenic differentiation during tooth organ formation in the embryo. However, the mechanism by which cell compaction is stabilized over time to ensure correct organ‐specific cell fate switching remains unknown. Results: Here, we show that mesenchymal cell compaction induces accumulation of collagen VI in the extracellular matrix (ECM), which physically stabilizes compressed mesenchymal cell shapes and ensures efficient organ‐specific cell fate switching during tooth organ development. Mechanical induction of collagen VI deposition is mediated by signaling through the actin‐p38MAPK‐SP1 pathway, and the ECM scaffold is stabilized by lysyl oxidase in the condensing mesenchyme. Moreover, perturbation of synthesis or cross‐linking of collagen VI alters the size of the condensation in vivo. Conclusions: These findings suggest that the odontogenic differentiation process that is induced by cell compaction during mesenchymal condensation is stabilized and sustained through mechanically regulated production of collagen VI within the mesenchymal ECM. Developmental Dynamics, 2015. 244:713–723, 2015. © 2015 Wiley Periodicals, Inc.
Morphological and moisture availability controls of the leaf area‐to‐sapwood area ratio: analysis of measurements on Australian trees
Authors: Togashi Henrique Furstenau , Prentice Iain Colin , Evans Bradley John , Forrester David Ian , Drake Paul , Feikema Paul , Brooksbank Kim , Eamus Derek , Taylor Daniel 
Published: February 2015

Abstract

The leaf area‐to‐sapwood area ratio (LA:SA) is a key plant trait that links photosynthesis to transpiration. The pipe model theory states that the sapwood cross‐sectional area of a stem or branch at any point should scale isometrically with the area of leaves distal to that point. Optimization theory further suggests that LA:SA should decrease toward drier climates. Although acclimation of LA:SA to climate has been reported within species, much less is known about the scaling of this trait with climate among species.

We compiled LA:SA measurements from 184 species of Australian evergreen angiosperm trees. The pipe model was broadly confirmed, based on measurements on branches and trunks of trees from one to 27 years old. Despite considerable scatter in LA:SA among species, quantile regression showed strong (0.2 < R1 < 0.65) positive relationships between two climatic moisture indices and the lowermost (5%) and uppermost (5–15%) quantiles of log LA:SA, suggesting that moisture availability constrains the envelope of minimum and maximum values of LA:SA typical for any given climate.

Interspecific differences in plant hydraulic conductivity are probably responsible for the large scatter of values in the mid‐quantile range and may be an important determinant of tree morphology.
Towards Improved Policy and Institutional Coherence in the Promotion of Sustainable Biofuels in Mali
Authors: Favretto Nicola , Stringer Lindsay C. , Dougill Andrew J. 
Published: February 2015

AbstractInterest in the promotion of biofuel investments to mediate the energy crisis and assist rural development is growing across sub‐Saharan Africa. However, empirical evidence on how policy can effectively promote sustainable biofuels is largely lacking. This paper presents new, multi‐level assessments of the implications of the Malian Strategy for Biofuels Development for the promotion of the oil‐bearing, non‐edible tree Jatropha curcas (Jatropha) as a sustainable development tool in Mali: a sub‐Saharan African country that has led Jatropha‐derived biofuel policy initiatives. In doing so, the paper addresses knowledge gaps on the role of national policy instruments in the uptake of biofuel activities. Semi‐structured interviews were undertaken with government departments, international organizations, private sector representatives, non‐governmental organizations and farming communities. Data show that mainstreaming internationally agreed principles into national policies is key to attract monetary, institutional and technical support from international organizations and donors. However, there are gaps between policy targets, actual yields and land cover. Jatropha oil supplies remain insufficient for improving access to fuel and substituting national consumption. Ambitious land cover targets set within national policies could risk land use shifts away from food towards biofuel production. Improved cooperation and coordination among state departments, enhanced monitoring of programmes and projects, as well as the establishment of adequate regulatory and fiscal frameworks governing private biofuel investments are needed to achieve sustainable outcomes. Copyright © 2015 John Wiley & Sons, Ltd and ERP Environment
A dynamic channel access strategy for underlay cognitive radio networks: Markov modelling and performance evaluation
Authors: Jalali Elmira , Balapuwaduge Indika A. M. , Li Frank Y. , Pla Vicent 
Published: February 2015

AbstractUnlike in overlay cognitive radio networks, secondary users in underlay cognitive radio networks can access licensed spectrum even at the presence of a primary user, given that the interference caused by the secondary transmission is lower than a pre‐specified threshold. Based on this underlay access principle, we propose in this paper a dynamic channel access strategy for multi‐channel cognitive radio networks. Different from existing underlay access techniques, channel assembling, spectrum adaptation and restricted channel occupancy are also considered in the proposed strategy in order to achieve better performance in the secondary network. Accordingly, a partial channel occupancy mode, which allows secondary users to access a portion of a channel when co‐existing with a primary user, is introduced in this study. The size of this portion is adjusted by selecting an appropriate value of a configurable parameter α in the partial channel occupancy mode. The system performance is evaluated for both primary and secondary networks, and a comparison analysis is carried out to assess the cost against the gain. Numerical results demonstrate that the proposed underlay channel access strategy outperforms the corresponding overlay strategy in terms of secondary network capacity, blocking probability and dropping probability. The cost and gain analysis identifies appropriate traffic conditions under which the overall system performance could be improved by employing the proposed underlay strategy. Copyright © 2015 John Wiley & Sons, Ltd.
Modern Management Practices and Hospital Admissions
Authors: McConnell K. John , Lindrooth Richard C. , Wholey Douglas R. , Maddox Thomas M. , Bloom Nick 
Published: February 2015

AbstractWe investigate whether the modern management practices and publicly reported performance measures are associated with choice of hospital for patients with acute myocardial infarction (AMI). We define and measure management practices at approximately half of US cardiac care units using a novel survey approach. A patient's choice of a hospital is modeled as a function of the hospital's performance on publicly reported quality measures and the quality of its management. The estimates, based on a grouped conditional logit specification, reveal that higher management scores and better performance on publicly reported quality measures are positively associated with hospital choice. Management practices appear to have a direct correlation with admissions for AMI—potentially through reputational effects—and indirect association, through better performance on publicly reported measures. Overall, a one standard deviation change in management practice scores is associated with an 8% increase in AMI admissions. Copyright © 2015 John Wiley & Sons, Ltd.
Desorption electrospray ionization‐based imaging of interaction between vascular graft and human body
Authors: Bodzon‐Kulakowska Anna , Drabik Anna , Mystkowska Joanna , Chlabicz Michal , Gacko Marek , Dabrowski Jan R. , Mielczarek Przemyslaw , Silberring Jerzy , Suder Piotr 
Published: February 2015

AbstractThe desorption electrospray ionization‐mass spectrometry imaging (DESI‐MSI) is known as a fast and convenient MS‐based method for lipid imaging in various biological materials. Here, we applied this technique to visualize lipid distribution in a vascular graft removed from a patient's body. This is a good example of the DESI system capabilities toward imaging of interaction between artificial material and living tissues. Detailed analysis allowed for visualization of the spatial distribution of selected lipids in this implanted, artificial material. Not only DESI‐MSI allowed visualization of lipid distribution in the investigated material but also enabled identification of the detected molecular species using MS/MS. Here, this technique was successfully used to evaluate the saturation and spatial distribution of endogenous lipids in the artificial vascular graft. Unambiguous identification of the lipids was done with the aid of fragmentation procedure. We also showed that various lipids localize preferably in graft material or internal plaque existing inside the graft. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 192–196, 2016.
Molecular Mechanisms Underlying the Regulation of the MFG‐E8 Gene Promoter Activity in Physiological and Inflammatory Conditions
Authors: Wang Xiao , Bu Heng‐Fu , Liu Shirley XL , De Plaen Isabelle G. , Tan Xiao‐Di 
Published: February 2015

ABSTRACTMilk fat globule‐EGF factor 8 (MFG‐E8) is expressed by macrophages and plays an important role in attenuating inflammation and maintaining tissue homeostasis. Previously, we and others found that lipopolysaccharide (LPS) inhibits MFG‐E8 gene expression in macrophages. Here, we characterized the 5'‐flanking region of the mouse MFG‐E8 gene. To functionally analyze the upstream regulatory region of the MFG‐E8 gene, a series of luciferase reporter gene constructs containing deleted or mutated regulatory elements were prepared. Using the luciferase assay, we revealed that Sp1 binding motifs within the proximal promoter region were necessary for full activity of the MFG‐E8 promoter, whereas AP‐1 like binding sequence at −372 played a role in governing the promoter activity at a homeostatic level. With chromatin immunoprecipitation assay, we showed that Sp1 and c‐Jun physically interact with the MFG‐E8 promoter region in vivo. In addition, Sp1 was found to regulate the MFG‐E8 promoter activity positively and c‐Jun negatively. Furthermore, we demonstrated that LPS inhibited MFG‐E8 promoter activity via targeting Sp1 and AP‐1‐like motifs in the 5'‐flanking region. Collectively, our data indicate that Sp1 and AP‐1‐related factors are involved in the regulation of MFG‐E8 gene transcription by targeting their binding sites in the 5'‐flanking region under physiological and inflammatory states. J. Cell. Biochem. 116: 1867–1879, 2015. © 2015 Wiley Periodicals, Inc.
Gender Specificity of a Genetic Variant of Androgen Receptor and Risk of Coronary Artery Disease
Authors: Agiannitopoulos Konstantinos , Bakalgianni Angeliki , Marouli Eirini , Zormpa Ioanna , Manginas Athanasios , Papamenzelopoulos Spyros , Lamnissou Klea 
Published: February 2015

BackgroundAndrogens are known to influence the risk of developing cardiovascular diseases. This study aims at investigating the possible association between G1733A polymorphism in the coding region of androgen receptor (AR) gene and premature coronary artery disease (CAD).MethodsA total of 460 Greek subjects were investigated for the G1733A polymorphism. The patient group consisted of 250 CAD individuals, aged less than 58 years, while 210 healthy individuals served as controls. Genotyping was performed using the PCR‐RFLP method.ResultsSignificant differences in genotype distribution (P = 0.0067) and allele frequencies (P = 0.0060) have been observed between patients and controls in the women's subgroup. Conversely, the genotype/allele frequencies were similar between patients and controls in the subgroup of men.ConclusionWe may conclude that the G1733A polymorphism of AR gene could be a useful genetic marker for the assessment of a woman's risk for CAD in our Caucasian Greek population.
Design of wideband single‐layer in‐phase power divider using microstrip to slotline coupled structure
Authors: Ahmed Ummee T. , Abbosh Amin M. 
Published: February 2015

ABSTRACTThe design of a planar in‐phase power divider for wideband applications is presented. The proposed divider uses a broadside coupled microstrip/slotline configuration with an improved isolation between the output ports using suitable isolation resistor. The proposed design is suitable for single layer integration as both the input and output ports are located at the same layer. Although the device can be used for any wideband application, the developed prototype is designed to operate within the band 2–5 GHz, which is used in microwave‐based head imaging systems. The simulated and experimental results of the developed divider show equal power division with less than 0.5 dB of additional insertion loss, less than 2° of phase imbalance, more than 13 dB of isolation and more than 10 dB of return loss over the band 2.3–4.7 GHz. It has a compact size with an overall dimension of 30 × 30 mm2. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:789–791, 2015
Experimental and theoretical investigation of resonance and radiation characteristics of superstrate loaded rectangular patch antenna
Authors: Biswas Manotosh , Mandal Anirban 
Published: February 2015

ABSTRACTIn this article, we present two models to predict the effective permittivity and effective patch length for computing the resonant frequency of superstrate loaded rectangular patch antenna. These models use a set of CAD oriented closed form expressions based on conformal mapping, transmission line and cavity model. These models are very simple and take less computational time. The accuracy of these models is verified against our new experimental results and previously reported experimental results available in open literature. To obtain the radiation characteristics and validate this structure electromagnetic software (HFSS) has been used. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:791–799, 2014
Temperature insensitive curvature sensor based on a combination interference structure and an intensity demodulation method
Authors: Zhao Yong , Gao Peng , Yang Yang 
Published: February 2015

ABSTRACTIn this article, a sensing head consisting of fiber loop mirror inscribed with a highly Birefringence photonic crystal fiber (HiBi‐PCF) was proposed and experimentally demonstrated. The fully collapsed air holes of the PCF at the spice regions allow the coupling of PCF core and cladding modes that makes a Mach–Zehnder interferometer. The couple efficiency of the core mode to the cladding mode will be decreased as the curvature on the HiBi‐PCF part is increased. The curvature variation on the HiBi‐PCF part can be obtained by detecting the fringe visibility of the interference patterns. Experimental results show that the curvature sensor with maximal sensitivity of 10.171 dB/m−1 within a measurement range of 0–0.48 m−1 is obtained. Owing to the low thermo‐optic and thermo‐expansion coefficient of the HiBi‐PCF and with the using of intensity demodulation method, the proposed sensor can overcome the temperature and curvature cross‐sensitivity effects. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:806–809, 2015