bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: On the Reaction of 3‐Cyanochromones with Phenyl‐ and Methylhydrazines: Structural Revision and a Simple Synthesis of Chromeno[4,3‐c]pyrazol‐4‐ones.
Authors: Sosnovskikh Vyacheslav Ya. , Moshkin Vladimir S. , Kodess Mikhail I. 
Published: October 2010

AbstractTreatment of cyanochromone (I) with methyl‐ and phenylhydrazines (II) and (VI) affords a variety of products.
ChemInform Abstract: Zinc Chloride‐Catalyzed One‐Pot Synthesis of 3‐[2‐(3‐Methyl‐4,5‐dihydro‐furo [2,3‐c]pyrazol‐1‐yl)thiazol‐4‐yl]chromene‐2‐ones via a Three‐Component Reaction.
Authors: Kumar P. Vijaya , Reddy K. Manoher , Rao V. Rajeswar 
Published: October 2010

AbstractCompounds (IV) can also be obtained in acetic acid under reflux or via Hantzsch thiazole synthesis in 70—76% yield.
ChemInform Abstract: Highly Efficient Chemoselective Construction of 2,2‐Dimethyl‐6‐substituted 4‐Piperidones via Multicomponent Tandem Mannich Reaction in Ionic Liquids.
Authors: Feng Li‐Chun , Sun Ya‐Wei , Tang Wei‐Jun , Xu Li‐Jin , Lam Kim‐Lung , Zhou Zhongyuan , Chan Albert S. C. 
Published: October 2010

AbstractThe ionic liquid [bmim][PF6] is an efficient and recyclable medium for the chemoselective L‐proline catalyzed synthesis of 2,2‐dimethyl‐6‐substituted 4‐piperidones such as (III) and (V).
ChemInform Abstract: The Reaction of 2‐Dimethylaminomethylene‐3‐oxo‐N‐phenylbutyramide with Active Methylene Nitriles.
Authors: Abdelrazek Fathy M. , Sharaf Mohey F. , Metz Peter , Jaeger Anna 
Published: October 2010

AbstractThe base‐catalyzed title reactions provide access to 3‐cyanopyridine derivatives.
ChemInform Abstract: Synthesis, Topoisomerase I and II Inhibitory Activities, and Cytotoxicity of 4,6‐Diaryl‐2,4′‐bipyridine Derivatives.
Authors: Karki Radha , Thapa Pritam , Kwon Youngjoo , Lee Eung‐Seok 
Published: October 2010

AbstractA variety of 2,4′‐bipyridine derivatives (I) (15 examples) is designed and synthesized.
ChemInform Abstract: Iodine‐Catalyzed and Solvent‐Controlled Selective Electrophilic Cyclization and Oxidative Esterification of ortho‐Alkynyl Aldehydes.
Authors: Verma Akhilesh Kumar , Aggarwal Trapti , Rustagi Vineeta , Larock Richard C. 
Published: October 2010

AbstractReaction temperature and solvent have dramatic effects on the course.
ChemInform Abstract: Bis‐8‐hydroxyquinoline and Bis‐8‐hydroxyquinaldine N‐Substituted Amines: A Single Methyl Group Structural Difference Between the Two Heterocycles, which Modulates the Antiproliferative Effects.
Authors: Kraus Jean‐Louis , et al. et al. 
Published: October 2010

AbstractBishydroxyquinoline N‐benzyl or thiophenyl amines and bishydroxyquinaldine derivatives (V) are prepared which differ only by the presence of a methyl group at the 2‐position of the heterocyclic ring.
ChemInform Abstract: Efficient Synthesis of 1,3,4‐Oxadiazolyl‐1,8‐naphthyridines Using Iodobenzene Diacetate in Solid State.
Authors: Mogilaiah K. , Kumar K. Shiva , Swamy J. Kumara , Chandra A. Vinay 
Published: October 2010

AbstractThe title oxadiazoles of type (VII) are obtained in high purity.
ChemInform Abstract: Copper‐Catalyzed Tandem Process: An Efficient Approach to 2‐Substituted‐1,4‐benzodioxanes.
Authors: Liu Yunyun , Bao Weiliang 
Published: October 2010

AbstractThe synthesis of a variety of 2‐substituted benzodioxanes (III), (V) is chemoselectively achieved by copper‐catalyzed cyclization of iodophenoxymethyloxiranes in the presence of phenol nucleophiles.
ChemInform Abstract: Synthesis, Antimicrobial and Insecticidal Activity of Some New Cinnoline Based Chalcones and Cinnoline Based Pyrazoline Derivatives.
Authors: Gautam Nidhi , Chourasia O. P. 
Published: October 2010

AbstractThe title compounds (IV) and (V) exhibit good antibacterial, antifungal and insecticidal activities.
ChemInform Abstract: Microwave‐Accelerated Dimroth Rearrangement for the Synthesis of 4‐Anilino‐6‐nitroquinazolines. Application to an Efficient Synthesis of a Microtubule Destabilizing Agent.
Authors: Foucourt Alicia , Dubouilh‐Benard Carole , Chosson Elizabeth , Corbiere Cecile , Buquet Catherine , Iannelli Mauro , Leblond Bertrand , Marsais Francis , Besson Thierry 
Published: October 2010

AbstractA variety of substituted anilines is applied to the reaction with cyanophenyl dimethylimidoformamide substrates (I) and (VIII) under microwave‐assisted conditions and atmospheric pressure to afford the desired 4‐anilinoquinazolines (III) or (IX).
ChemInform Abstract: Some Observations on the Base‐Catalyzed Cyclocondensation of 2,6‐Dihalobenzaldehydes, Ethyl Cyanoacetate, and Thiourea.
Authors: Al‐Omar Mohamed A. , Al‐Obaid Abdul‐Rahman M. , El‐Brollosy Nasser R. , El‐Emam Ali A. 
Published: October 2010

AbstractThe title cyclocondensation affords inseparable mixtures of cis‐ and trans‐dihydrothiouracil derivatives (IV)/(V), which are found to be highly resistant to atmospheric and thermal oxidation.
ChemInform Abstract: Design and Synthesis of Novel Pyrazino[2,1‐a]isoquinoline Derivatives with Potent Antifungal Activity.
Authors: Tang Hui , Zheng Can‐hui , Zhu Ju , Fu Bing‐yue , Zhou You‐jun , Lv Jia‐guo 
Published: October 2010

AbstractCompound (VIb) is more potent than fluconazole against two of the three tested fungal strains.
ChemInform Abstract: Revisiting the Hinsberg Reaction: Facile and Expeditious Synthesis of 3‐Substituted Quinoxalin‐2(1H)‐ones under Catalyst‐Free Conditions in Water.
Authors: Murthy Sabbavarapu Narayana , Madhav Bandaru , Nageswar Yadavalli Venkata Durga 
Published: October 2010

AbstractThe protocol is simple and environmentally friendly allowing the preparation of various 3‐substituted quinoxalin derivatives in good yields.
ChemInform Abstract: An Efficient Microwave‐Assisted Synthesis of 6,8‐Dihydroimidazo[1,2‐a][1,3,5]triazine Derivatives.
Authors: Matloobi Mitra , Schramm Hans Wolfgang 
Published: October 2010

AbstractReaction of the 1‐substituted biguanides (I) with benzil (II) under microwave conditions affords the imidazolyl guanidine intermediates (III) as a mixture of tautomers within a few minutes.
ChemInform Abstract: Synthesis, Antioxidant and Antimicrobial Activity of Novel Benzene‐1,4‐diamine‐bis‐dioxaphosphepine‐6λ5 Iminophosphoranes.
Authors: Reddy M. Veera Narayana , Reddy G. Chandra Sekhar , Kumar K. Suresh , Reddy C. Suresh , Raju C. Naga 
Published: October 2010

AbstractThe majority of the title compounds (V) (10 examples) exhibits potent in vitro antioxidant and antimicrobial activities.
ChemInform Abstract: Efficient Synthesis of Selenoesters from Acyl Chlorides Mediated by CuO Nanopower in Ionic Liquid.
Authors: Singh Devender , Narayanaperumal Senthil , Gul Kashif , Godoi Marcelo , Rodrigues Oscar Endrigo Dorneles , Braga Antonio Luiz 
Published: October 2010

AbstractCatalyst and solvent are easily recovered and can be reused.
ChemInform Abstract: Brasilamides A—D: Sesquiterpenoids from the Plant Endophytic Fungus Paraconiothyrium brasiliense.
Authors: Liu Ling , Gao Hao , Chen Xulin , Cai Xiaoyue , Yang Leilei , Guo Liangdong , Yao Xinsheng , Che Yongsheng 
Published: October 2010

AbstractBrasilamides B (Ib), C (IIa), and D (IIb) show modest inhibitory effects on HIV‐1 replication in C8166 cells.
ChemInform Abstract: Enantiospecific Total Synthesis of ent‐5‐Senecioyloxy‐10,11‐epoxythapsan‐10‐ol.
Authors: Srikrishna A. , Anebousselvy K. 
Published: October 2010

AbstractStarting from (R)‐carvone, a Criegee fragmentation is used for the intramolecular stereospecific transfer of the chirality to produce the ester (I) by a published procedure.
ChemInform Abstract: Mutremdamide A (I) and Koshikamides C—H, Peptide Inhibitors of HIV‐1 Entry from Different Theonella Species.
Authors: Plaza Alberto , Bifulco Giuseppe , Masullo Milena , Lloyd John R. , Keffer Jessica L. , Colin Patrick L. , Hooper John N. A. , Bell Lori J. , Bewley Carole A. 
Published: October 2010

AbstractThe highly N‐methylated linear polypeptides koshikamide C‐E and the cyclic analogues F‐H are isolated from Theonella swinhoei and Theonella cupola.
ChemInform Abstract: Enantioselective Total Synthesis of the Unnatural and the Natural Stereoisomers of Vittalalactone.
Authors: Schmidt Yvonne , Lehr Konrad , Breuninger Ulrich , Brand Gabriel , Reiss Tomislav , Breit Bernhard 
Published: October 2010

AbstractBased on the synthesis of stereoisomers and spectroscopic comparison, it is found that the natural compound is represented by structure (I).
ChemInform Abstract: The Metabolites of Mangrove Endophytic fungus Zh6‐B1 from the South China Sea.
Authors: Li Kai‐Kai , Lu Yong‐Jun , Song Xiao‐Hong , She Zhi‐Gang , Wu Xi‐Wei , An Lin‐Kun , Ye Chuang‐Xing , Lin Yong‐Cheng 
Published: October 2010

AbstractSonnerlactones (I) may have beneficial therapeutic potential against drug‐resistant tumors.
ChemInform Abstract: New Phenanthrenes and Stilbenes from Dendrobium loddigesii
Authors: Ito Masanobu , Matsuzaki Keiichi , Wang Jue , Daikonya Akihiro , Wang Nai‐Li , Yao Xin‐Sheng , Kitanaka Susumu 
Published: October 2010

Abstractisolation and structure determination of the new compounds, loddigesiinols A—D and evaluation of their effects against NO production and DPPH radical scavenging
ChemInform Abstract: 2‐Isoxazolinium Salts and 3‐Isoxazolines: Exploratory Chemistry and Uses for the Synthesis of Branched Amino Polyols and Amino Acids
Authors: Jaeger Volker , Frey Wolfgang , Bathich Yaser , Shiva Sunitha , Ibrahim Mohammad , Henneboehle Marco , LeRoy Pierre‐Yves , Imerhasan Mukhtar 
Published: October 2010

AbstractReview: 46 refs.
ChemInform Abstract: Mechanistic Insight into Organic and Catalytic Reactions by Joint Studies Using Mass Spectrometry and NMR Spectroscopy
Authors: Belyakov Pavel A. , Kadentsev Valentine I. , Chizhov Alexander O. , Kolotyrkina Natal'ya G. , Shashkov Alexander S. , Ananikov Valentine P. 
Published: October 2010

AbstractReview: 47 refs.
ChemInform Abstract: Solvation of Carbohydrates in 1,3‐Dialkylimidazolium Ionic Liquids: Insights from Multinuclear NMR Spectroscopy and Molecular Dynamics Simulations
Authors: Petrik Igor D. , Remsing Richard C. , Liu Zhiwei , O'Brien Brendan B. , Moyna Guillermo 
Published: October 2010

AbstractReview: 38 refs.
Artificial Neural Network Prediction of Tropospheric Ozone Concentrations in Istanbul, Turkey
Authors: Inal Fikret 
Published: October 2010

AbstractTropospheric (ground‐level) ozone has adverse effects on human health and environment. In this study, next day's maximum 1‐h average ozone concentrations in Istanbul were predicted using multi‐layer perceptron (MLP) type artificial neural networks (ANNs). Nine meteorological parameters and nine air pollutant concentrations were utilized as inputs. The total 578 datasets were divided into three groups: training, cross‐validation, and testing. When all the 18 inputs were used, the best performance was obtained with a network containing one hidden layer with 24 neurons. The transfer function was hyperbolic tangent. The correlation coefficient (R), mean absolute error (MAE), root mean squared error (RMSE), and index of agreement or Willmott's Index (d2) for the testing data were 0.90, 8.78 µg/m3, 11.15 µg/m3, and 0.95, respectively. Sensitivity analysis has indicated that the persistence information (current day's maximum and average ozone concentrations), NO concentration, average temperature, PM10, maximum temperature, sunshine time, wind direction, and solar radiation were the most important input parameters. The values of R, MAE, RMSE, and d2 did not change considerably for the MLP model using only these nine inputs. The performances of the MLP models were compared with those of regression models (i.e., multiple linear regression and multiple non‐linear regression). It has been found that there was no significant difference between the ANN and regression modeling techniques for the forecasting of ozone concentrations in Istanbul.
Extending Service Life of Household Water Filters by Mixing Metallic Iron with Sand
Authors: Noubactep Chicgoua , Caré Sabine , Togue‐Kamga Fulbert , Schöner Angelika , Woafo Paul 
Published: October 2010

AbstractThe use of metallic iron filters (Fe0 filters) has been discussed as a promising low‐cost option for safe drinking water production at household level. Filter clogging due to the volumetric expansive nature of iron corrosion has been identified as the major problem of Fe0 filters. Mixing Fe0 and sand (yielding Fe0/sand filters) has been proposed as a tool to extent filter service life. However, no systematic discussion rationalizing Fe0/sand mixtures is yet available. This communication theoretically discussed suitable Fe0/sand proportions for efficient filters. Results suggested that Fe0/sand filters should not contain more that 50 vol% Fe0 (25 wt% when Fe0 is mixed with quartz). The actual Fe0 percentage in a filter will depend on its intrinsic reactivity.
A revision of the luminance decay time estimation methods for photoluminescent products
Authors: Alcón Natividad , Tolosa Ángel , Picó Marcela , Iñigo Inma 
Published: October 2010

AbstractWe present a comparison between the methods used by two regulatory standards to estimate the luminance decay time for photoluminescent safety signs and safety way guidance systems (SWGS). One of these standards is the international ISO 16069. The other is the Spanish regulatory standard UNE 23035‐1. Both standards define the luminance decay time as the time for the luminance emitted by the photoluminescent sample to reach 0.3 mcd/m2 after the excitation light over the sample is removed. Due to the fact that decay time can be really long, they propose methods to estimate it by extrapolation. The points suggested by each standard to adjust the luminance decay time curve are quite different and so are the results obtained with them. To compare both methods, four different photoluminescent safety signs were tested using the methods provided by these two regulatory standards. The samples were illuminated for 5 min with a xenon‐arc source of light; luminance measurements after illumination were made with a B‐510 LMT photometer, for an interval of time according to methods explained by the standards. The results were compared with real measurements of luminance decay time for each sample, allowing the luminance value to reach 0.3 mcd/m2. Results obtained from the extrapolating methods provided by each standard showed that standard ISO 16069 was much more accurate than UNE 23035‐1, which showed important deviations from real decay time values. © 2010 Wiley Periodicals, Inc. Col Res Appl, 2011
Designing white‐light LED lighting for the display of art: A feasibility study
Authors: Berns Roy S. 
Published: October 2010

AbstractWhen displaying art, several criteria must be balanced when designing illumination including the artist's intention, damage, energy efficiency, viewing experience and understanding, and for commercial galleries and sales. The most common lighting for art includes natural daylight and incandescent spotlights. Neither source is optimal for all criteria; thus there is considerable interest in the use of white‐light light‐emitting diode (LED) lighting. A feasibility study was conducted to address two questions. First, was it possible to design a three‐primary LED source that yielded the same color rendering as common museum lighting? Second, could one design the lighting to achieve specific color appearance attributes? Three‐primary lights using a Gaussian function were optimized matching the chromaticity of D65 and minimizing color differences for a set of acrylic dispersion paints. The optimal wavelengths depended on bandwidth. Lights were also optimized that either maximized or minimized average chroma. A set of real LEDs was selected that produced similar results when evaluated computationally. A source that increases chroma may be useful when used to illuminate works of art with high light sensitivity: very low illuminances are necessary and such a source will compensate for the reduction of colorfulness and visual clarity. A source that decreases chroma may be used to render art in similar fashion to low‐light conditions such as churches and caves. In general, white LED lighting is advantageous for art conservation because they do not emit UV and IR radiation and their visible radiation is reduced when compared with their continuous spectrum equivalent. © 2010 Wiley Periodicals, Inc. Col Res Appl, 2011
Skin‐color correction method based on hue template mapping for wide color gamut liquid crystal display devices
Authors: Chen Hung‐Shing , Wang Te‐Mei , Chen Shih‐Han , Liu Jin‐Sin 
Published: October 2010

AbstractThe development of wide color gamut (WCG) liquid crystal display (LCD) plays an important role in the high‐quality television (TV) field. Nowadays, people want their TV or display devices to have the capability of showing vivid colors while keeping skin colors as natural as they remember. Therefore, it is necessary to develop color‐correction technologies for WCG LCD system.A new color‐correction method named “natural skin‐color mapping algorithm” (NSCMA) for WCG LCD is proposed in this study. It can solve the skin‐color contour problem in color‐corrected images with simple skin‐color detection. Its development is based on the concepts of performing color mapping between source hue colors and target hue colors on each hue page. The polynomial regression is also applied to calculate the color mapping conversion matrices.Two color mapping factors called template‐size factor and tone‐compression factor are designed in NSCMA. The template‐size factor is used to adjust target template sizes adequately. The tone‐compression factor is designed to control the degrees of image enhancement. For facial skin‐color pictures, the appropriate settings of template‐size factor and tone‐compression factor will get suitable color image rendering on the WCG LCD.It is demonstrated that the WCG LCD can be corrected to show vivid color pictures and keep facial skin colors as natural as possible when the proposed NSCMA is performed. © 2010 Wiley Periodicals, Inc. Col Res Appl, 2011
Type‐safe concurrent resource sharing
Authors: Wittie Lea , Lockhart Jonathan 
Published: October 2010

AbstractConcurrent systems often have many processes sharing a common set of resources, both memory regions and hardware devices. Among the many challenges in producing safe concurrent software are single access, atomic transactions, starvation, and deadlock. Locks are frequently used to provide single access to shared resources, but do not guarantee safe usage. This paper extends the previous work on linear, singleton, and arithmetic types and linear memory primitives. Our contributions are capabilities for shared resources, and locks to control these capabilities in provably safe ways. We present formalized locks in a lambda calculus along with the soundness properties of preservation and progress. The type system described here prevents data races. The formalized locks have also been implemented in a C‐like language and used in a network device driver. Copyright © 2010 John Wiley & Sons, Ltd.
Comparing programming models for medical imaging on multi‐core systems
Authors: Kegel Philipp , Schellmann Maraike , Gorlatch Sergei 
Published: October 2010

AbstractMulti‐core processors offer a huge potential of parallelism but pose a challenge of program development for achieving high performance in real applications. We compare three popular parallel programming models—POSIX threads (Pthreads), OpenMP, and Threading Building Blocks (TBB)—regarding their use for multi‐core systems. We analyze how these models can be employed for implementing various parallelizations of a real‐world application from the area of medical imaging, and we conduct extensive runtime experiments to measure performance. Our main contribution is a comprehensive comparison of Pthreads, OpenMP, and TBB with respect to the following criteria: program development effort, programming style, level of abstraction, and runtime performance on multi‐cores. Copyright © 2010 John Wiley & Sons, Ltd.
A new query‐by‐humming system based on the score level fusion of two classifiers
Authors: Nam Gi Pyo , Park Kang Ryoung , Park Sung‐Joo , Lee Soek‐Pil , Kim Moo‐Young 
Published: October 2010

SUMMARYWith the widespread use of multimedia devices, such as MP3 players, the necessity of a content‐based retrieval is increased, which can find the stored music even if a user does not know the title or singer of the music. Consequently, a query‐by‐humming (QBH) system is introduced, which provides functionality that a user can find a piece of music by humming. Although there have been many researches into QBH, there has been little done to combine more than two classifiers based on various fusion methods. Hence, we propose a new method of QBH based on the score level fusion of two classifiers.This research is novel in the following three ways as compared with previous works. First, the features of the humming data are extracted by using musical note estimation based on the spectro‐temporal autocorrelation (STA). We normalize the extracted features by using the mean‐shifting, median filtering, average filtering, and min–max scaling methods. Second, a pitch‐based dynamic time warping (DTW) method is used as the first classifier. We use the linear scaling (LS) method with the quantized binary (QB) code of the pitch data as the second classifier. Third, through the combination of these two classifiers based on the score level by the MIN rule, the performance of QBH is much enhanced.Experimental results with the 2006 MIREX QBSH and 2009 MIR‐QBSH corpus databases showed that the performance of the proposed fusion method was best compared with single classifier and other fusion methods. Copyright © 2010 John Wiley & Sons, Ltd.
Upstream bandwidth optimization of thin client protocols through latency‐aware adaptive user event buffering
Authors: Simoens P. , Vankeirsbilck B. , Deboosere L. , Ali F. Azmat , De Turck F. , Dhoedt B. , Demeester P. 
Published: October 2010

AbstractThin client computing trades local processing for network bandwidth by off‐loading application logic to remote servers. User input and display updates are exchanged between client and server through a thin client protocol. In a wireless device context, it is important to achieve bandwidth efficient thin client protocols because bandwidth availability is limited and the power consumption of the wireless network interface card is directly related to the amount of data that is sent and received. This paper presents and evaluates a novel client‐based mechanism which is transparent to the server to reduce upstream bandwidth consumption. Typically, thin client protocols encode user input as a series of small packets, resulting in a major packetization overhead. By buffering user events at the thin client protocol layer, this overhead can be reduced. However, buffering strategies might result in increased response delays for the user. Therefore, models of the upstream bandwidth and the user perceived responsiveness of pull thin client protocols are presented and validated. These models are used in an adaptive framework, which determines the appropriate buffering time to minimize the bandwidth as much as possible without degrading the responsiveness. For lower network roundtrip times and users actively generating input, it is shown how bandwidth savings up to 78% can be achieved while keeping the average user perceived responsiveness below 150 ms. Copyright © 2010 John Wiley & Sons, Ltd.