bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Construction of Optically Active Indolines by Formal [4 + 1] Annulation of Sulfur Ylides and N‐(ortho‐Chloromethyl)aryl Amides.
Authors: Yang Qing‐Qing , Wang Qiang , An Jing , Chen Jia‐Rong , Lu Liang‐Qiu , Xiao Wen‐Jing 
Published: October 2013

AbstractAsymmetric [4 + 1] annulation of axial chiral sulfur ylides (I) and N‐(ortho‐chloromethyl)aryl amides represents a direct procedure to access chiral 2‐substituted indolines.
ChemInform Abstract: Synthesis of 2‐Aryl Benzothiazoles via K2S2O8‐Mediated Oxidative Condensation of Benzothiazoles with Benzylamines.
Authors: Yang Zhiyong , Wang Anwei , Chen Xiang , Gui Qingwen , Liu Jidan , Tan Ze , Wang Hua , Si Ji‐Cheng 
Published: October 2013

AbstractA novel strategy allows the preparation of 2‐arylbenzothiazoles from benzothiazole and primary, secondary, or tertiary benzylamines without any catalyst.
ChemInform Abstract: Simple Stereoselective Synthesis of Unsaturated Lactone Intermediates and Their Conversion into Natural Dihydropyranones and Their Enantiomers.
Authors: Shinde Digambar Balaji , Kanth Boddu Shashi , Satyakumar Avula , Kamble V. T. , Das Biswanath 
Published: October 2013

AbstractA simple synthesis of enantiopure unsaturated lactone (VII) and its enantiomer employing Maruoka asymmetric allylation and subsequent ring closing metathesis as the key steps is given.
ChemInform Abstract: Development of Palladium‐Catalyzed Decarboxylative Cross‐Coupling of (2‐Azaaryl)carboxylates with Aryl Halides.
Authors: Haley Christopher K. , Gilmore Christopher D. , Stoltz Brian M. 
Published: October 2013

AbstractThe title method offers direct access to 2‐aryl‐azaarenes without requiring stoichiometric amounts of organometallic reagents or organoboronic acids.
ChemInform Abstract: Notable Difference in anti‐HIV Activity of Integrase Inhibitors as a Consequence of Geometric and Enantiomeric Configurations.
Authors: Okello Maurice , Mishra Sanjay , Nishonov Malik , Nair Vasu 
Published: October 2013

AbstractTwo enantiomeric carboxamides (III) are synthesized stereospecifically and evaluated for their anti‐HIV activity.
ChemInform Abstract: The SBA‐15/SO3H Nanoreactor as a Highly Efficient and Reusable Catalyst for Diketene‐Based, Four‐Component Synthesis of Polyhydroquinolines and Dihydropyridines under Neat Conditions.
Authors: Rostamnia Sadegh , Pourhassan Fatemeh 
Published: October 2013

AbstractA facile four component synthesis of title compounds (V) and (VI) involving a diketene ring‐opening reaction is reported using mesoporous sulfonic acid modified silica (SBA‐15) as reusable catalyst.
ChemInform Abstract: Direct 2‐Acetoxylation of Quinoline N‐Oxides via Copper Catalyzed C—H Bond Activation.
Authors: Chen Xuan , Zhu Chongwei , Cui Xiuling , Wu Yangjie 
Published: October 2013

AbstractUsing tert‐butyl hydroperoxide as an oxidant, the cross‐dehydrogenative coupling reaction of quinoline N‐oxides with aldehydes provides a practical pathway to 2‐acyloxyl quinolines.
ChemInform Abstract: Synthesis of Tetracyclic Pyrrolidine/Isoxazolidine Fused Pyrano[3,2‐h]quinolines via Intramolecular 1,3‐Dipolar Cycloaddition in Ionic Liquid.
Authors: Hazra Abhijit , Bharitkar Yogesh P. , Maity Arindam , Mondal Shyamal , Mondal Nirup B. 
Published: October 2013

AbstractNitrones and azomethine ylides generated in situ by reaction of hydroxylamines or amino acids with the formyl group of substrates (I) undergo highly diastereoselective intramolecular 1,3‐dipolar cycloadditions to give the title compounds in good yields.
ChemInform Abstract: Cationic Dirhodium Carboxylate‐Catalyzed Synthesis of Dihydropyrimidones from Propargyl Ureas.
Authors: Yang Miao , Odelberg Shannon J. , Tong Zongzhong , Li Dean Y. , Looper Ryan E. 
Published: October 2013

AbstractIt is demonstrated that dirhodium(II) is capable of catalyzing the chemo‐ and regioselective hydroamination of propargyl ureas.
ChemInform Abstract: trans‐Stereoselective Reduction of Hexahydroquinazoline‐2(1H)‐thione Derivatives.
Authors: Gella I. M. , Bui O. D. , Mirnyi A. V. , Shishkina S. V. , Shishkin O. V. , Orlov V. D. 
Published: October 2013

AbstractReduction of 4‐arylhexahydroquinazolinethione derivatives using a NaBH4/TFA system affords selectively the corresponding trans‐fused octahydroquinazolinethiones.
ChemInform Abstract: Nano‐Fe3O4 Encapsulated‐Silica Particles Bearing Sulfonic Acid Groups as a Magnetically Separable Catalyst for Green and Efficient Synthesis of Functionalized Pyrimido[4,5‐b]quinolines and Indeno Fused Pyrido[2,3‐d]pyrimidines in Water.
Authors: Nemati Firouzeh , Saeedirad Raheleh 
Published: October 2013

AbstractThe title catalyst can be recovered using an external magnet and reused several times without significant loss of activity.
ChemInform Abstract: H3PO4/(CF3CO)2O Mediated Acylation Followed by Hurd—Mori Reaction: Synthesis of Novel 1,2,3‐Thiadiazol Derivatives.
Authors: Rajitha Chittipaka , Dubey P. K. , Sunku Venkataiah , Veeramaneni Venugopal Rao , Pal Manojit 
Published: October 2013

AbstractStarting material (I) is prepared in a three step sequence starting from o‐nitrophenol.
ChemInform Abstract: Switching the Regioselectivity via Indium(III) and Gold(I) Catalysis: A Post‐Ugi Intramolecular Hydroarylation to Azepino‐ and Azocine‐[c,d]indolones.
Authors: Kumar Amit , Li Zhenghua , Sharma Sunil K. , Parmar Virinder S. , Van der Eycken Erik V. 
Published: October 2013

AbstractThe intramolecular hydroarylation of Ugi adducts (V) in the presence of an indium catalyst leads to azepinoindolones (VI), whilst azocineindolones (VII) are obtained using a gold catalyst.
ChemInform Abstract: 2,6‐Pyridinedicarboxylic Acid as Organocatalyst for the Synthesis of 1,5‐Benzodiazepines Through One‐Pot Reaction.
Authors: Lal Mohan , Basha R. Sidick , Sarkar Satavisha , Khan Abu T. 
Published: October 2013

AbstractTitle compounds such as (IV), (VI), and (VIII) are prepared via a three‐component reaction of o‐phenylenediamine (I), aromatic aldehydes and β‐ketoesters.
ChemInform Abstract: Transformations of Tetrahydro‐1,4‐benzoxazepines and Tetrahydro‐1,4‐benzothiazepines under the Action of Alkynes. First Example of the Synthesis of Tetrahydro‐1,4‐benzothiazonine‐6‐carboxylate.
Authors: Voskressensky L. G. , Akbulatov S. V. , Borisova T. N. , Kulikova L. N. , Listratova A. V. , Sorokina E. A. , Varlamov A. V. 
Published: October 2013

AbstractA variety of tetrahydrobenzoxazepines and related‐thiazepines (X) are synthesized and subjected to reactions with activated alkynes in MeOH while the benzoxazepines suffer a ring cleavage at the N—C(5) bond [→ (XII)], benzothiazepine (Xd) undergoes an unprecedented thiazepine ring expansion furnishing a benzothiazonine (XIV).
ChemInform Abstract: Synthesis of Condensed [1,2,3]Triazolo[5,1‐b][1,3,4]thiadiazepine Systems
Authors: Kalinina T. A. , Shatunova D. V. , Glukhareva T. V. , Morzherin Yu. Yu. 
Published: October 2013

Abstractvia Dimroth rearrangement of hydrazinothiadiazole (I) followed by cyclocondensation of intermediate 5‐mercaptotriazole with quinoline or pyrazole derivatives containing adjacent chlorine and formyl groups
ChemInform Abstract: Enantioselective Synthesis of γ‐Aminobutyric Acid Derivatives by Ni(II)‐Catalyzed Reaction of Diethyl Malonate with Nitroalkenes.
Authors: Reznikov A. N. , Golovin E. V. , Klimochkin Yu. N. 
Published: October 2013

AbstractLow‐cost and readily accessible Ni(II) complex catalysts are employed as key step in the enantioselective Michael addition leading finally to (3R)‐4‐amino‐3‐methylbutanoic acid (V) and R‐phenotropil (XIII).
ChemInform Abstract: Inhibition of Candida albicans Isocitrate Lyase Activity by Cadiolides and Synoilides from the Ascidian Synoicum sp.
Authors: Ahn Chan‐Hong , Won Tae Hyung , Kim Heegyu , Shin Jongheon , Oh Ki‐Bong 
Published: October 2013

AbstractThe cadiolide E (I), G (IIa), H (IIb), I (III), and synoilide A (IVa) and B (IVb) are isolated from title ascidian.
ChemInform Abstract: New Bioactive Dihydrofuranocoumarins from the Roots of the Tunisian Ferula lutea (Poir.) Maire.
Authors: Ben Salem Saoussen , Jabrane Aymen , Harzallah‐Skhiri Fethia , Ben Jannet Hichem 
Published: October 2013

AbstractThe 5‐hydroxyprantschimgin (Ia) and 5‐hydroxydeltoin (Ib) are isolated as inseparable isomers together with eight known compounds The mixture of the compounds (I) shows cytotoxic activity against the cancer cell lines HT‐29 and HCT 116 and antioxidant activity.
ChemInform Abstract: Graphene Oxide Protected Nucleic Acid Probes for Bioanalysis and Biomedicine
Authors: Cui Liang , Song Yanling , Ke Guoliang , Guan Zhichao , Zhang Huimin , Lin Ya , Huang Yishun , Zhu Zhi , Yang Chaoyong James 
Published: October 2013

AbstractReview: 91 refs.
Analysis of pressure fluctuations induced by multi‐horizontal submerged jets in the novel jet tank
Authors: Meng Huibo , Wang Yanfen , Yu Yanfang , Wang Zongyong , Wu Jianhua 
Published: October 2013

AbstractBy means of detrending moving average and rescaled range analysis, the multifractal characteristics of the pressure fluctuation rate series (PFRS) derived from instantaneous fluctuations signals (PFS) in circulating jet tank (CJT) were investigated and the criteria of different scales were established. The central parts of the probability density functions of PFRS were exponentially distributed, and the positive part decayed slower than the negative part. The existence of multifractal characteristics of PFRS under different circumferential angles had been confirmed by both the strong q‐dependence of generalised Hurst exponents and continuous wavelet decompositions. The high frequency Hurst exponents based on rescaled range analysis were all >0.66 with the changing Re, which presented that PFRS had the long‐range dependence and aperiodicity. The local fractal dimensions declined with the increasing scales and presented the same trend at different dimensionless radial positions r/R0. The decomposed fluctuation components at scale a = 1–4 had different local fractal dimensions which revealed that the fluid flow was more complicated. The fluctuation energy profiles of PFRS indicated that the instantaneous pressure fluctuations were dominated by the interaction between macro‐scale vortexes and liquid phase.
A lightweight key management scheme based on an Adelson‐Velskii and Landis tree and elliptic curve cryptography for wireless sensor networks
Authors: Boumerzoug Hayette , Amar Bensaber Boucif , Biskri Ismail 
Published: October 2013

AbstractWireless sensor networks are increasingly used in most varied fields such as environment, health, and military. Often, information transmitted on these networks requires encryption to maintain confidentiality, integrity, and non‐repudiation. But encryption techniques used to encrypt data on wired networks are not suitable for sensor networks that consist of small nodes equipped with limited resources. In this paper; we propose a security method for wireless sensor networks that provides good protection while taking into account the limited resources of the sensors. This method is based on an effective key management scheme with a minimum storage of keys. It is based on the combination and improvement of two approaches already proposed by the research community: cryptography based on elliptic curves and key management based on an Adelson‐Velskii and Landis tree. Compared with RECC ‘a routing‐driven elliptic curve cryptography based key management scheme for heterogeneous sensor networks’ and CECKM ‘high‐effect key management associated with secure data transmission approaches in sensor networks using a hierarchical‐based cluster elliptic curve key agreement’, two methods based on Diffie–Hellman elliptic curve cryptography method, our method reduces energy consumption, storage memory, and extends the lifetime of the sensor network. Our simulation results illustrate that our approach saves significant time and memory and reduces the number of exchanged packets during keys installation phase. Also, it requires fewer processing operations and maintains the scalability of the network. Concurrency and Computation: Practice and Experience, 2013.© 2013 Wiley Periodicals, Inc.
The Role of Oxidative Debris on Graphene Oxide Films
Authors: López‐Díaz David , Mercedes Velázquez Maria , Blanco de La Torre Santiago , Pérez‐Pisonero Ana , Trujillano Raquel , Fierro José Luis García , Claramunt Sergi , Cirera Albert 
Published: October 2013

AbstractWe study the effect of oxidative impurities on the properties of graphene oxide and on the graphene oxide Langmuir–Blodgett films (LB). The starting material was grupo Antolín nanofibers (GANF) and the oxidation process was a modified Hummers method to obtain highly oxidized graphene oxide. The purification procedure reported in this work eliminated oxidative impurities decreasing the thickness of the nanoplatelets. The purified material thus obtained presents an oxidation degree similar to that achieved by chemical reduction of the graphite oxide. The purified and non‐purified graphene oxides were deposited onto silicon by means of a Langmuir–Blodgett (LB) methodology. The morphology of the LB films was analyzed by field emission scanning microscopy (FE‐SEM) and micro‐Raman spectroscopy. Our results show that the LB films built by transferring Langmuir monolayers at the liquid‐expanded state of the purified material are constituted by close‐packed and non‐overlapped nanoplatelets. The isotherms of the Langmuir monolayer precursor of the LB films were interpreted according to the Volmer’s model.
Tube‐In‐Tube Reactor as a Useful Tool for Homo‐ and Heterogeneous Olefin Metathesis under Continuous Flow Mode
Authors: Skowerski Krzysztof , Czarnocki Stefan J. , Knapkiewicz Paweł 
Published: October 2013

AbstractA tube‐in‐tube reactor was successfully applied in homo‐ and heterogeneous olefin metathesis reactions under continuous flow mode. It was shown that the efficient removal of ethylene facilitated by connection of the reactor with a vacuum pump significantly improves the outcome of metathesis reactions. The beneficial aspects of this approach are most apparent in reactions performed at low concentration, such as macrocyclization reactions. The established system allows achievement of both improved yield and selectivity, and is ideal for industrial applications.
A novel low power and high speed double edge explicit pulse triggered level converter flip‐flop
Authors: Razmdideh Ramin , Saneei Mohsen 
Published: October 2013

SummaryOne of the effective ways to reduce power consumption is using clustered voltage scaling technique. The level converter flip‐flop is needed to control static current when the block with Low Supply Voltage (VDDL) drives the block with High Supply Voltage (VDDH). One of the big challenges of design is that level converter flip‐flop has low power and high speed. In this paper, pulse triggered level converter flip‐flop and double edge pulse generator were proposed. This level converter flip‐flop used conditional data mapping technique for reducing power consumption. An explicit double edge pulse generator could be shared among several level converter flip‐flops so that power consumption would be reduced. Also, the number of stack transistor was reduced in the discharging path that causes delay decrease. The simulation results showed that the proposed flip‐flop reduced 20% of power consumption and 17% of delay in comparison with other flip‐flops at 50% data switching activity. Copyright © 2013 John Wiley & Sons, Ltd.
Online SOC Estimation of Battery for Wireless Tramcar
Authors: Miyamoto Hiroyuki , Morimoto Masayuki , Morita Katsuaki 
Published: October 2013

SUMMARYWireless tramcars (battery‐driven tramcars) are developing to the actual application stage. The most important information to be considered while operating a wireless tramcar is the state of charge (SOC) of the battery. The purpose of this study is to develop an online method for SOC estimation. This method employs a new equivalent circuit of a lithium‐ion battery. SOC estimation using a conventional equivalent circuit results in a large error during fast current transients. In order to improve the accuracy of the estimation, we propose a new equivalent circuit of a lithium‐ion battery. Because the parameters of the proposed equivalent circuit depend on temperature, we propose a new method for SOC estimation in which the temperature estimation is taken into account. This method requires only instantaneous values of the voltage and current, and therefore no temperature measurement is required.Experimental results show that the accuracy of the proposed method is significantly improved when the temperature is taken into account. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(2): 83–89, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21174
Static and Dynamic Characteristic Models of Global Solar Radiation Fluctuation in the Scope of Load Frequency Control
Authors: Akatsuka Motoki , Hara Ryoichi , Kita Hiroyuki , Takitani Katsuyuki , Saito Masami 
Published: October 2013

SUMMARYPenetration of photovoltaic (PV) generation system into the power system may have some negative effects on stable operations of the power system; for example, on frequency control. Therefore, investigation of the short‐term fluctuations of PV generation is important as a precaution for further PV penetration. Since PV generation is approximately proportional to the incident solar radiation, this paper develops static and dynamic characteristic models for short‐term fluctuations of global solar radiation. The static characteristic model is a set of standard deviations which have been statistically estimated based on past observed data. The dynamic characteristic model consists of autoregressive models which are designed for actually observed time‐sequential short‐term fluctuation data. In both models, the clearness index is used to eliminate seasonal variation of solar radiation. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(2): 10–20, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22469
Reduction in Ripple Current and Self‐Inductance by Using Electromagnetic Coupling of Reactor
Authors: Nakamura Takayuki , Taguchi Yoshiaki , Ogasa Masamichi 
Published: October 2013

SUMMARYTo produce DC current by using a multiphase reversible chopper, smoothing reactors are needed. When smoothing reactors are employed, the chopper device becomes large and heavy, especially if electromagnetic interference is avoided.The reduction in the ripple current by electromagnetic coupling contributes to making the chopper device smaller and lighter. We deduced the relationships among the ripple current amplitude, duty factor, and electromagnetic coupling coefficient. To determine the loss and gain, we introduced the ratio of the amplitude of the ripple current in each phase and in the total combined current of the multiphase chopper system to that of the ripple current in a one‐phase chopper, Aph, Asum, respectively. This value indicates the reduction not only in the ripple current amplitude but also in the self‐inductance. The minimum value of the above‐mentioned ratio obtained analytically is accurately determined. We derived the minimum values and obtained the range within which reduction of the ripple current amplitude for both each phase and total combined is achieved. Finally, we applied an optimal electromagnetic coupling coefficient to the design of on‐board reactors of electric railway vehicles. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(2): 68–82, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22480
Demand–Supply Balancing Capability Analysis for a Future Power System
Authors: Ogimoto Kazuhiko , Kataoka Kazuto , Ikegami Takashi , Nonaka Shunsuke , Azuma Hitoshi , Fukutome Suguru 
Published: October 2013

SUMMARYUnder the anticipated high penetration of variable renewable energy generation such as photovoltaics and higher share of nuclear generation, the issue of supply–demand balancing capability should be evaluated and fixed in a future power system. Improvement of existing balancing measures and new technologies such as demand activation and energy storage are expected to solve the issue. In this situation, a long‐range power system supply–demand analysis should have the capability to evaluate the balancing capability and balancing countermeasures. This paper presents a new analysis methodology of activated demand model and evaluation of supply–demand balancing capability for a long‐range power system demand–supply analysis model, ESPRIT. Model analysis was made to verify the new methodology of the tool including day‐ahead scheduling of a heat pump water heater, an EV/PHEV, and a battery. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(2): 21–30, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22488
Interleukin 1 beta gene and risk of schizophrenia: detailed case–control and family‐based studies and an updated meta‐analysis
Authors: Shibuya Masako , Watanabe Yuichiro , Nunokawa Ayako , Egawa Jun , Kaneko Naoshi , Igeta Hirofumi , Someya Toshiyuki 
Published: October 2013

ObjectiveInterleukin‐1 beta (IL‐1β) has been implicated in the pathophysiology of schizophrenia. To assess whether the IL1B gene confers increased susceptibility to schizophrenia, we conducted case–control and family‐based studies and an updated meta‐analysis.MethodsWe tested the association between IL1B and schizophrenia in 1229 case–control and 112 trio samples using 12 markers, including common tagging single nucleotide variations (SNVs) and a rare non‐synonymous variation detected by resequencing the coding regions. We also performed a meta‐analysis of rs16944 using a total of 8724 case–control and 201 trio samples from 16 independent populations.ResultsWe found no significant associations between any of the 12 SNVs examined and schizophrenia in either case–control or trio samples. Moreover, our meta‐analysis results showed no significant association between the common SNV, rs16944, and schizophrenia.ConclusionsThe present study does not support a role for IL1B in schizophrenia susceptibility. Copyright © 2013 John Wiley & Sons, Ltd.
Impacts of climate variability on water quality with best management practices in sub‐tropical climate of USA
Authors: Jayakody Priyantha , Parajuli Prem B. , Cathcart Thomas P. 
Published: October 2013

AbstractEfficiency of non‐point source pollution control methods may be altered in future climate. This study investigated climate change impacts on sediment and nutrient transport, and efficiency of best management practices (BMPs), in the Upper Pearl River Watershed (UPRW) in Mississippi. The Soil and Water Assessment Tool was applied to the UPRW using observed flow, sediment and nutrient data. Water quality samples were collected at three US geological survey gauging stations. The model was successfully calibrated and validated for daily time steps (Nash Sutcliffe efficiency and coefficient of determination – R2 up to 0.7) using manual and automatic (sequential uncertainty fitting version 2) methods from February 2010 to May 2011. Future weather scenarios were simulated using the LARS‐WG model, a stochastic weather generator, with Community Climate System Model, global climate model, which was developed by the National Center for Atmospheric Research in the USA. On the basis of the Special Report on Emissions Scenarios A1B, A2 and B1 of the Intergovernmental Panel on Climate Change, climate change scenarios were simulated for the mid (2046–2065) and late (2080–2099) century. Effectiveness of four BMPs (Riparian buffer, stream fencing, sub‐surface manure applications and vegetative filter strips) on reducing sediment and nutrient were evaluated in current and future climate conditions. Results show that sediment, nitrogen and phosphorus loadings will be increased up to a maximum of 26.3%, 7.3% and 14.3%, respectively, in future climate conditions. Furthermore, the effectiveness of BMPs on sediment removal will be reduced in future climate conditions, and the efficiency of nitrogen removal will be increased, whereas phosphorus removal efficiency will remain unchanged. Copyright © 2013 John Wiley & Sons, Ltd.