bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Direct FeX3‐Based Stereocontrolled Access to (Z)‐3‐Alkenyl‐oxindoles from Allenols.
Authors: Alcaide Benito , Almendros Pedro , Luna Amparo , Prieto Natividad 
Published: May 2013

AbstractThe Z‐selectivity of this reaction is mechanistically explained by complexation of the iron halide to the hydroxyl group followed by a concerted pseudopericyclic halogenation/dehydroxylation step.
ChemInform Abstract: Asymmetric Direct α‐Alkylation of 2‐Oxindoles with Michler′s Hydrol Catalyzed by Bis‐Cinchona Alkaloid—Broensted Acid via an SN1‐Type Pathway.
Authors: Zhang Tao , Qiao Zhen , Wang Yan , Zhong Nengjun , Liu Li , Wang Dong , Chen Yong‐Jun 
Published: May 2013

AbstractA novel organocatalytic asymmetric α‐alkylation of 2‐oxindoles (I) with Michler′s alcohol (II) is described, which is catalyzed by the combination of a chiral bis‐cinchona alkaloid and a Broensted acid.
ChemInform Abstract: Synthesis of Pyrrolo[2,3‐a]pyrrolizidino Derivatives Through Intramolecular 1,3‐Dipolar Cycloaddition in Ionic Liquid Medium.
Authors: Kathiravan Subban , Raghunathan Raghavachary 
Published: May 2013

Abstract5 Title compounds are prepared by an intramolecular cycloaddition in the ionic liquid [bmim]BF4.
ChemInform Abstract: Synthesis of Enantioenriched Aza‐Proline Derivatives Through Gold(I)‐Catalyzed Cyclization of Chiral α‐Hydrazino Esters.
Authors: Bouvet Sebastien , Moreau Xavier , Coeffard Vincent , Greck Christine 
Published: May 2013

AbstractGold‐catalyzed 5‐exo‐dig cyclization of the chiral α‐hydrazino esters, prepared easily using Sonogashira coupling as a key step, proceeds mostly with high regioselectivity affording only small amounts of the 6‐endo‐dig products of the type (V).
ChemInform Abstract: A Novel Antifungal Agent with Broad Spectrum: 1‐(4‐Biphenylyl)‐3‐(1H‐imidazol‐1‐yl)‐1‐propanone.
Authors: Roman Gheorghe , Mares Mihai , Nastasa Valentin 
Published: May 2013

AbstractA series of imidazolylpropanones (III) as well as their reduced derivatives (IV) are synthesized and tested for their antifungal activity against 16 strains of Candida.
ChemInform Abstract: C—F Bond Activation of Unactivated Aliphatic Fluorides: Synthesis of Fluoromethyl‐3,5‐diaryl‐2‐oxazolidinones by Desymmetrization of 2‐Aryl‐1,3‐difluoropropan‐2‐ols.
Authors: Haufe Guenter , Suzuki Satoru , Yasui Hiroyuki , Terada Chisato , Kitayama Takashi , Shiro Motoo , Shibata Norio 
Published: May 2013

AbstractUnder optimized conditions the tandem carbamoylation/cyclization reactions of difluorpropanols afford the title oxazolidines.
ChemInform Abstract: Chiral Guanidine‐Catalyzed 1,4‐Addition Reaction of 5H‐Oxazol‐4‐ones to Alkynones.
Authors: Misaki Tomonori , Jin Nari , Kawano Kei , Sugimura Takashi 
Published: May 2013

AbstractThe use of Ph2PMe is crucial.
ChemInform Abstract: Regioselective Synthesis of 3,5‐Diaryl‐4‐methylisoxazoles.
Authors: Lokhande Pradeep D. , Hasanzadeh Kamal , Khaledi Hamid , Ali Hapipah Mohd 
Published: May 2013

Abstract10 Title compounds (V) are prepared by regioselective reaction of (IV) with hydroxylamine.
ChemInform Abstract: Dienamine‐Mediated Inverse‐Electro‐Demand Hetero‐Diels—Alder Reaction by Using an Enantioselective H‐Bond‐Directing Strategy.
Authors: Albrecht Lukasz , Dickmeiss Gustav , Weise Christian F. , Rodriguez‐Escrich Carles , Joergensen Karl Anker 
Published: May 2013

AbstractFor the first time the title regio‐ and stereoselective reaction is developed by using a bifunctional squaramide‐containing aminocatalyst.
ChemInform Abstract: Selective Synthesis of Cyano‐Functionalized 2‐Aryl‐4H‐chromenes and 2‐Amino‐4H‐chromene‐3‐carbonitriles by Catalyst‐Tuned Reactions of 2‐Hydroxychalcones with 2‐Substituted Acetonitriles.
Authors: Yin Guodong , Shi Houqiang , Xu Liqianyun , Wei Xianhong , Tao Qing 
Published: May 2013

AbstractDepending on the conditions, the reactions provide the title systems selectively.
ChemInform Abstract: An Efficient, Regioselective Amination of 3,5‐Disubstituted Pyridine N‐Oxides Using Saccharin as an Ammonium Surrogate.
Authors: Farrell Robert P. , Elipe Maria Victoria Silva , Bartberger Michael D. , Tedrow Jason S. , Vounatsos Filisaty 
Published: May 2013

AbstractThe presented new amination process uses saccharin as an ammonia surrogate delivering both high conversions and high regioselectivities.
ChemInform Abstract: Efficient Ionic Liquid‐Catalyzed Synthesis and Antimicrobial Studies of 4,6‐Diaryl‐ and 4,5‐Fused Pyrimidine‐2‐thiones.
Authors: Gupta Richa , Chaudhary Ram Pal 
Published: May 2013

AbstractA variety of 4,6‐diaryl‐ and fused pyrimidine‐2‐thiones are synthesized via N‐methylpyridinium tosylate‐catalyzed multicomponent reactions.
ChemInform Abstract: Synthesis of Novel Chromene Derivatives of Expected Antitumor Activity.
Authors: Kandeel Manal M. , Kamal Aliaa M. , Abdelall Eman K. A. , Elshemy Heba A. H. 
Published: May 2013

AbstractDerivatives (IIIa), (IVa), (VIIIb), (Xc) exhibit superior in vitro anti tumor activity when compared to colchicine as a reference drug.
ChemInform Abstract: Synthesis of Substituted Pyrimidinones Catalyzed by Boric Acid and Glycerol in Aqueous Medium.
Authors: Mukhopadhyay Chhanda , Datta Arup 
Published: May 2013

AbstractThe Biginelli‐type formation of pyrimidones (IV) catalyzed by a boric acid—glycerol mixture in aqueous medium is presented.
ChemInform Abstract: One‐Pot Synthesis of Highly Functionalized 2H‐Pyrimido[1,2‐a]benzimidazoles.
Authors: Hassanabadi Alireza , Mosslemin Mohammad H. , Anary‐Abbasinejad Mohammad , Koocheki Somayeh 
Published: May 2013

AbstractFive title compounds (IV) are prepared by a one‐pot reaction of benzimidazol carbamate (I), isonitriles (II), acetylenedicarboxylates (III).
ChemInform Abstract: A Stereoselective Approach to (Z)‐1‐Silyl‐2‐aryl‐1,3‐dienes from 4‐(Phenylselanyl)but‐1‐yne via Palladium‐Catalyzed Silylstannylation and Selenoxide Elimination.
Authors: Shintaku Kazuki , Maeda Hajime , Segi Masahito 
Published: May 2013

AbstractThe regio‐ and stereoselective silylstannylation of butyne derivative (I) provides the intermediate (III) which is easily converted into the desired products (VI) by combination of oxidative deselenation and Stille cross‐coupling.
ChemInform Abstract: Synthesis, Quantitative Structure—Activity Relationship, and Antiinflammatory Profiles of Substituted 5‐ and 6‐N‐Heterocycle Bisphosphonate Esters.
Authors: Shaddy Abeer A. , Kamel Azza A. , Abdou Wafaa M. 
Published: May 2013

AbstractA series of substituted N‐heterocyclic aminomethylene bisphosphonates are synthesized via a modified one‐pot Kabachnik—Fields reaction.
ChemInform Abstract: Chemical Constituents from the Fruit of Gardenia jasminoides and Their Inhibitory Effects on Nitric Oxide Production
Authors: Peng Kaifeng , Yang Liguo , Zhao Shizhe , Chen Lixia , Zhao Feng , Qiu Feng 
Published: May 2013

Abstract[isolation, structure elucidation and inhibitory effects of three new iridoid glycosides [cf.
Structure and Reactivity of the Glutathione Radical Cation: Radical Rearrangement from the Cysteine Sulfur to the Glutamic Acid α‐Carbon Atom
Authors: Osburn Sandra , Berden Giel , Oomens Jos , Gulyuz Kerim , Polfer Nick C. , O'Hair Richard A. J. , Ryzhov Victor 
Published: May 2013

AbstractA gas‐phase radical rearrangement through intramolecular hydrogen‐atom transfer (HAT) was studied in the glutathione radical cation, [γ‐ECG]+., which was generated by a homolytic cleavage of the protonated S‐nitrosoglutathione. Ion–molecule reactions suggested that the radical migrates from the original sulfur position to one of the α‐carbon atoms. Experiments on the radical cations of dipeptides derived from the glutathione sequence, [γ‐EC]+. and [CG]+., pointed to the glutamic acid α‐carbon atom as the most likely site of the radical migration. Infrared multiple‐photon dissociation (IRMPD) spectroscopy was employed to generate complementary information. IRMPD of [γ‐ECG]+. in the approximately 1000–1800 cm−1 region was inconclusive owing to the relatively broad, overlapping absorption bands. However, the IRMPD spectrum of [γ‐EC]+. in this region was consistent with the radical migrating from the sulfur to the α‐carbon atom of glutamic acid. IRMPD in the 2800–3700 cm−1 region performed on [γ‐ECG]+. is consistent with a mixture of both the original sulfur‐based radical and the resulting glutamic acid α‐carbon‐based species. Comparisons are made with previously published condensed and gas‐phase studies on intramolecular HAT in glutathione.
Adolescents with Anxiety and Depression: Is Social Recovery Relevant?
Authors: Simonds Laura M. , Pons Rebecca A. , Stone Nicola J. , Warren Fiona , John Mary 
Published: May 2013

Social recovery has become a prominent aspect of mental health service design and delivery in the past decade. Much of the literature on social recovery is derived from first‐person accounts or primary research with adult service users experiencing severe mental illness. There is a lack of both theoretical and empirical work that could inform consideration of how the concept of social recovery might apply to adolescents experiencing common (non‐psychotic) mental health problems such as anxiety and depression. The current study was conducted to understand the process of experiencing anxiety and depression in young people. Semi‐structured interviews were conducted with nine adolescents with anxiety and depression (seven girls and two boys aged 14–16 years) and 12 mothers who were recruited from a specialist Child and Adolescent Mental Health Service in the South of England. Thematic analysis indicated that young people do experience a process of ‘recovery’; the processes participants described have some congruence with the earlier stages of adult recovery models involving biographical disruption and the development of new meanings, in this case of anxiety or depression, and changes in sense of identity. The accounts diverge with regard to later stages of adult models involving the development of hope and responsibility. The findings suggest that services should attend to social isolation and emphasise support for positive aspirations for future selves whilst also attending to young people's and parents' expectations about change. Methodological challenges face enquiry about ‘recovery’ given its connotations with cure in everyday language. Copyright © 2013 John Wiley & Sons, Ltd.Key Practitioner Message

Theoretical and empirical work on social recovery in young people and families is lacking.
Using interviews, this study sought to understand the relevance of social recovery for adolescents with anxiety and depression and their mothers.
Findings suggest some congruence with the earlier stages of adult recovery models involving meaning and identity.
Findings diverge with regard to later stages of adult recovery models involving hope and responsibility.
Social recovery in mental health services for young people needs significant empirical attention and critical debate.
Oxygen‐Functionalized Few‐Layer Graphene Sheets as Active Catalysts for Oxidative Dehydrogenation Reactions
Authors: Schwartz Viviane , Fu Wujun , Tsai Yu‐Tung , Meyer Harry M. , Rondinone Adam J. , Chen Jihua , Wu Zili , Overbury Steven H. , Liang Chengdu 
Published: May 2013

AbstractInvited for this month′s cover is the group from the Center for Nanophase Materials Sciences (CNMS) at the Oak Ridge National Laboratory. The illustration is of the catalytic activity of the reported oxygen‐functionalized few‐layer graphenes, whereas the micrograph background image is of the same graphenes recorded by the authors using a new helium‐ion microscope at the CNMS. Read the full text of the article at 10.1002/cssc.201200756
Implementation and design of high‐power fast charger for lithium‐ion battery pack
Authors: Pai Kai‐Jun , Chien Ming‐De , Hsieh Chu‐Chung , Cheng Ming‐Yao , Liang Cheng‐Kuan , Lo Yu‐Kang , Liu Yu‐Chen , Tseng Po‐Jung 
Published: May 2013

SUMMARYThe high‐power fast charger (HPFC) incorporating a power stage with a controlling loop is presented in this paper. A power stage is composed of an inter‐leaved boost power factor correction and a DC‐DC full‐bridge phase‐shifted (FBPS) converter, and that the HPFC can supply a constant‐voltage (CV) or a constant‐current (CC) power to charge a secondary lithium‐ion battery pack. In addition, the ripple current can be reduced due to the DC‐DC FBPS converter combines with the current‐doubler rectifier at HPFC's output side. Also, the controlling loop is equipped with a voltage compensator and a current compensator, and this design is for the sake of HPFC, which can either operate in CV or CC output mode. Moreover, the shut‐down situation will be prevented by proposed bi‐phase charging controller, when the charging current is adjusted from the fist CC level to the second CC level. Analysis and design considerations of the proposed circuits are presented in details. Experimental results agree well with the theoretical predictions and confirm the validity of the proposed approach. Copyright © 2013 John Wiley & Sons, Ltd.
Two sexes, one genome: the evolutionary dynamics of intralocus sexual conflict
Authors: Pennell Tanya M. , Morrow Edward H. 
Published: May 2013

AbstractAs the evolutionary interests of males and females are frequently divergent, a trait value that is optimal for the fitness of one sex is often not optimal for the other. A shared genome also means that the same genes may underlie the same trait in both sexes. This can give rise to a form of sexual antagonism, known as intralocus sexual conflict (IASC). Here, a tug‐of‐war over allelic expression can occur, preventing the sexes from reaching optimal trait values, thereby causing sex‐specific reductions in fitness. For some traits, it appears that IASC can be resolved via sex‐specific regulation of genes that subsequently permits sexual dimorphism; however, it seems that whole‐genome resolution may be impossible, due to the genetic architecture of certain traits, and possibly due to the changing dynamics of selection. In this review, we explore the evolutionary mechanisms of, and barriers to, IASC resolution. We also address the broader consequences of this evolutionary feud, the possible interactions between intra‐ and interlocus sexual conflict (IRSC: a form of sexual antagonism involving different loci in each sex), and draw attention to issues that arise from using proxies as measurements of conflict. In particular, it is clear that the sex‐specific fitness consequences of sexual dimorphism require characterization before making assumptions concerning how this relates to IASC. Although empirical data have shown consistent evidence of the fitness effects of IASC, it is essential that we identify the alleles mediating these effects in order to show IASC in its true sense, which is a “conflict over shared genes.”
Transfer kinetics of perfluorooctane sulfonate from water and sediment to a marine benthic fish, the marbled flounder (Pseudopleuronectes yokohamae)
Authors: Sakurai Takeo , Kobayashi Jun , Kinoshita Kyoko , Ito Nozomi , Serizawa Shigeko , Shiraishi Hiroaki , Lee Jeong-Hoon , Horiguchi Toshihiro , Maki Hideaki , Mizukawa Kaoruko , Imaizumi Yoshitaka , Kawai Toru , Suzuki Noriyuki 
Published: May 2013

Abstract

The authors investigated the kinetics of transfer of perfluorooctane sulfonate (PFOS) from water, suspended sediment, and bottom sediment to a marine benthic fish, the marbled flounder (Pseudopleuronectes yokohamae). Fish were exposed in 3 treatments to PFOS in combinations of these exposure media for 28 d and then depurated for 84 d. A major part (37–66%) of PFOS in the fish was in the carcass (i.e., whole body minus muscle and internal organs). Three first-order-kinetic models that differed in exposure media, that is, 1) sum of dissolved and particulate phases and sediment; 2) dissolved phase, particulate phase, and sediment; and 3) dissolved phase only, were fitted to the data assuming common rate constants among the treatments. The uptake efficiency of dissolved PFOS at the respiratory surfaces was estimated to be 3.2% that of oxygen, and the half-life of PFOS in the whole body to be 29 d to 31 d. The better fit of models 1 and 2 and the values of the estimated uptake rate constants suggested that the PFOS in suspended and bottom sediments, in addition to that dissolved in water, contributed to the observed body burden of the fish. Based on an evaluation of several possible contributing factors to the uptake of PFOS from suspended and bottom sediments, the authors propose that further investigation is necessary regarding the mechanisms responsible for the uptake. Environ Toxicol Chem 2013;32:2009–2017. © 2013 The Authors. Environmental Toxicology and Chemistry Published by Wiley Periodicals, Inc., on behalf of SETAC. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Biomass properties from different Miscanthus species
Authors: Liu Chenchen , Xiao Liang , Jiang Jianxiong , Wang Wangxia , Gu Feng , Song Dongliang , Yi Zili , Jin Yongcan , Li Laigeng 
Published: May 2013

AbstractMiscanthus, a peculiar genus originating from East Asia, has been considered a promising type of gramineous plant for the bioenergy industry. In this study, four major Miscanthus species widely distributed in China, Miscanthus sinensis, Miscanthus floridulus, Miscanthus sacchariflorus, and Miscanthus lutarioriparius were assessed for their biomass production, chemical composition, and saccharification efficiency. Results show that the annual dry biomass yields of M. sinensis, M. floridulus, M. sacchariflorus, and M. lutarioriparius averaged 16.7, 22.5, 16.7, and 32.0 t ha−1 over 3 years, respectively. M. sinensis and M. floridulus have similar chemical compositions, but different from M. sacchariflorus and M. lutarioriparius. The efficiencies of enzymatic saccharification were assayed after pretreatment with dilute acid and green liquor, respectively. The M. sinensis and M. floridulus biomass displayed higher saccharification efficiency in the case of dilute acid pretreatment, while the M. sacchariflorus and M. lutarioriparius biomass showed higher efficiency following the green liquor pretreatment. Furthermore, a rapid estimation model for predicting Miscanthus biomass saccharification efficiency was established on the basis of near‐infared reflectance spectrometry analysis.
Remotely induced warming of Antarctic Bottom Water in the eastern Weddell gyre
Authors: Couldrey Matthew P. , Jullion Loïc , Naveira Garabato Alberto C. , Rye Craig , Herráiz‐Borreguero Laura , Brown Peter J. , Meredith Michael P. , Speer Kevin L. 
Published: May 2013

AbstractFour repeat hydrographic sections across the eastern Weddell gyre at 30°E reveal a warming (by ~0.1°C) and lightening (by ~0.02–0.03 kg m−3) of the Antarctic Bottom Water (AABW) entering the gyre from the Indian sector of the Southern Ocean between the mid‐1990s and late 2000s. Historical hydrographic and altimetric measurements in the region suggest that the most likely explanation for the change is increased entrainment of warmer mid‐depth Circumpolar Deep Water by cascading shelf water plumes close to Cape Darnley, where the Indian‐sourced AABW entering the Weddell gyre from the east is ventilated. This change in entrainment is associated with a concurrent southward shift of the Antarctic Circumpolar Current's (ACC) southern boundary in the region. This mechanism of AABW warming may affect wherever the ACC flows close to Antarctica.
Frequency analysis of annual maximum suspended sediment concentrations in Abiod wadi, Biskra (Algeria)
Authors: Benkhaled A. , Higgins H. , Chebana F. , Necir A. 
Published: May 2013

AbstractSediment transport processes in the Mediterranean semi‐arid areas have interested a great number of hydrologists and statisticians. Frequency analysis (FA) procedures are commonly applied for several hydrological events such as floods and droughts. However, in general, FA is not widely applied to treat suspended sediment concentration (SSC), especially in semi‐arid regions. In the present study, an FA was performed on SSC data from 1979 to 1991 observed upstream from the Foum El Gherza dam, which is located at Biskra in the South–East of Algeria. This dam is problematic in terms of silting. Therefore, this study is mainly motivated by providing an FA model and risk evaluation in order to assist dam managers to better evaluate the potential of silting resulting from SSC transport to the reservoir. Probability distributions commonly used in hydrology were tested to SSC data recorded at the M'chounech station on Abiod wadi located upstream the dam. All the FA steps were considered; including classical techniques (e.g. goodness‐of‐fit tests, statistical criteria) as well as recently developed tools (tail distribution classification). Their application led to the selection of the lognormal distribution (LN2) to fit the considered data, and hence an accurate risk assessment could be obtained. Because of the presence of a slight trend, non‐stationary models are also considered in the present study. Copyright © 2013 John Wiley & Sons, Ltd.
THE IRRIGATION SECTOR SHIFT FROM CONSTRUCTION TO MODERNIZATION: WHAT IS REQUIRED FOR SUCCESS?
Authors: Burt Charles M. 
Published: May 2013

ABSTRACTExternal pressures related to environmental protection, commodity prices, energy availability, larger populations, and climate change have combined to require an immediate and substantial improvement in agricultural irrigation performance. Worldwide progression towards modernized irrigation projects has been uneven and slower than desired, but decades of irrigation modernization development have clarified certain requirements for success, as well as illuminated indicators of project failure. Of particular importance are required shifts within the state and national irrigation bureaucracies, as well as universities. Copyright © 2013 John Wiley & Sons, Ltd.
Effects of copper at sublethal concentrations on growth and biochemical parameters in rainbow trout (Oncorhynchus mykiss)
Authors: Heydarnejad Mohammad Saeed , Khosravian‐hemami Mojdeh , Nematollahi Amin , Rahnama Samira 
Published: May 2013

AbstractThe effects of sublethal concentrations of heavy metals on fish are not well known. Copper (Cu), as one of heavy metals and an environmental stressor, may alter many physiological processes like growth and serum parameters in fish. The main objective of this study was to determine the effects of copper at sublethal concentrations (10 and 30 µg/L) on growth and serum biochemical parameters including enzymes, i.e., alkaline phosphatase (ALP), aspartate aminotransferase (AST), and alanine aminotransferase (ALT), glucose, triglyceride, cholesterol, and total protein (TP) in rainbow trout (Oncorhynchus mykiss). Trout were exposed to copper, and at intervals of 1, 15, and 30 days, selected parameters were evaluated. Condition factor (CF), specific growth rate (SGR) and body weight gain (BWG) consistently decreased, while food conversion ratio (FCR) increased at the end of experiment. Glucose, AST, and ALT were elevated, whereas triglyceride and cholesterol decreased in trout exposed to both Cu concentrations (Cu10 and Cu30) at day 15 and then returned to levels comparable to control fish. TP and ALP increased linearly by time and Cu10 and 30. This investigation suggests that growth and serum biochemical parameters could be used as important and sensitive biomarkers in ecotoxicological studies concerning the effects of metal contamination and fish health.