bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: A Versatile Synthesis of α‐Keto (Cyanomethylene)triphenylphosphorane Ylides from Alkyl Halides Utilizing a Noble Phenylsulfonyl Reagent.
Authors: Lee Kieseung , Hwang Chan‐Yeon 
Published: February 2014

AbstractA new synthetic approach to the title ylides (IV) is developed utilizing the alkylation of the novel, noble phenylsulfonyl compound (I) with alkyl halides as key step.
ChemInform Abstract: Clerodendrumic Acid, a New Triterpenoid from Clerodendrum glabrum (Verbenaceae), and Antimicrobial Activities of Fractions and Constituents
Authors: Masevhe Ndivhaleni A. , Awouafack Maurice D. , Ahmed Aroke S. , McGaw Lyndy J. , Eloff Jacobus N. 
Published: February 2014

Abstractisolation, characterization, antimicrobial activities and cytotoxicity
ChemInform Abstract: Concise Synthesis of Enantiomerically Pure (1′S,2′R)‐ and (1′R,2′S)‐2S‐Amino‐3‐(2′‐aminomethyl‐cyclopropyl)propionic Acid: Two E‐Diastereoisomers of 4,5‐Methano‐L‐lysine.
Authors: Altamore Timothy M. , Nguyen Oanh T. K. , Churches Quentin I. , Cavanagh Kate , Nguyen Xuan T. T. , Duggan Sandhya A. M. , Krippner Guy Y. , Duggan Peter J. 
Published: February 2014

AbstractThe zinc‐mediated cyclopropanation of E‐allylic alcohol (II) is the key step in the synthesis of methano‐L‐lysine derivatives (IV) and (V).
ChemInform Abstract: Efficient Synthesis of Protected Sulfonopeptides from N‐Protected 2‐Aminoalkyl Xanthates and Thioacetates.
Authors: Kakaei Saeed , Xu Jiaxi 
Published: February 2014

AbstractAn efficient and convenient method for the synthesis of protected sulfonopeptides via NCS oxidative chlorination of N‐protected 2‐aminoalkyl xanthates or thioacetates to the corresponding sulfonyl chlorides followed by aminolysis with amino esters is developed.
ChemInform Abstract: Synthesis and Biological Assays of 9‐(Acylamino)homocamptothecins as DNA Topoisomerase I Inhibitors.
Authors: Zhang Wannian , et al. et al. 
Published: February 2014

AbstractNovel homocamptothecin analogs with acylamino groups at C‐9 (III) are synthesized and screened for their cytotoxic activities against three cancer cell lines.
ChemInform Abstract: Thiaplakortones A—D: Antimalarial Thiazine Alkaloids from the Australian Marine Sponge Plakortis lita
Authors: Davis Rohan A. , Duffy Sandra , Flechter Sabine , Avery Vicky M. , Quinn Ronald J. 
Published: February 2014

Abstractisolation and structure elucidation of thiaplakortones A (I), B (II), C (III), and D (IV)
ChemInform Abstract: Identification of Six New Minor Diarylheptanoids from the Seeds of Alpinia katsumadai
Authors: Nam Joo‐Won , Seo Eun‐Kyoung 
Published: February 2014

Abstractisolation and structure elucidation of katsumains D—G (I)—(III) and two new alpinikatin derivatives (IV)
ChemInform Abstract: Natural‐Product‐Based Insecticidal Agents. Part 14. Semisynthesis and Insecticidal Activity of New Piperine‐Based Hydrazone Derivatives Against Mythimna separata Walker in vivo.
Authors: Qu Huan , Yu Xiang , Zhi Xiaoyan , Lv Min , Xu Hui 
Published: February 2014

AbstractThe insecticidal activity of new piperine‐based hydrazine derivatives (III), (V)/(VI) is evaluated against pre‐third‐instar larvae of Mythimna separata Walker in vivo.
ChemInform Abstract: The Cytotoxicity of 8‐O‐4′ Neolignans from the Seeds of Crataegus pinnatifida.
Authors: Huang Xiao‐Xiao , Zhou Chen‐Chen , Li Ling‐Zhi , Li Fei‐Fei , Lou Li‐Li , Li Dian‐Ming , Ikejima Takshi , Peng Ying , Song Shao‐Jiang 
Published: February 2014

AbstractNine new neolignans, pinnatifidanin B I‐IX, are isolated together with 9 known compounds.
ChemInform Abstract: New Nemadectin Congeners with Acaricidal and Nematocidal Activity from Streptomyces microflavus Neau3 Y‐3.
Authors: Yang Ling‐Yu , Wang Ji‐Dong , Zhang Ji , Xue Chang‐Yan , Zhang Hui , Wang Xiang‐Jing , Xiang Wen‐Sheng 
Published: February 2014

AbstractBoth new nemadectin congeners (I) and (II) exhibit potent acaricidal and nematodical activity.
ChemInform Abstract: Xanthone Derivatives from the Fermentation Products of an Endophytic Fungus of Phomopsis amygdali.
Authors: Hu Qiufen , Niu Deyun , Yang Shuai , Cao Hongyun , Meng Chunyang , Yang Haiyin , Gao Xuemei , Du Gang 
Published: February 2014

Abstract2 New xanthones (I) and (II) are isolated from the fermentation products of a Phomopsis fungus along with 4 known xanthones.
ChemInform Abstract: First Enantioselective Total Synthesis of (‐)‐Dysibetaine CPa and Absolute Configurations of Natural Product
Authors: Sakai Michihiro , Ishikawa Yuichi , Takamizawa Satoshi , Oikawa Masato 
Published: February 2014

Abstractthe absolute configuration of the natural product dysibetaine (I) is determined as (3R,4R)
ChemInform Abstract: Low Dimensional Carbon Materials for Applications in Mass and Energy Transport
Authors: Wang Qing Hua , Bellisario Darin O. , Drahushuk Lee W. , Jain Rishabh M. , Kruss Sebastian , Landry Markita P. , Mahajan Sayalee G. , Shimizu Steven F. E. , Ulissi Zachary W. , Strano Michael S. 
Published: February 2014

AbstractReview: 93 refs.
ChemInform Abstract: Metals on Graphene and Carbon Nanotube Surfaces: From Mobile Atoms to Atomtronics to Bulk Metals to Clusters and Catalysts
Authors: Sarkar Santanu , Moser Matthew L. , Tian Xiaojuan , Zhang Xixiang , Al‐Hadeethi Yas Fadel , Haddon Robert C. 
Published: February 2014

AbstractReview: 84 refs.
Development and Investigation of the Production of Branched Oleo Derivatives in Miniplant Scale
Authors: Behr Arno , Witte Henning , Kämper Alexander , Haßelberg Jennifer , Nickel Martin 
Published: February 2014

AbstractVerzweigte Oleochemikalien unterscheiden sich in ihren physikochemischen Eigenschaften deutlich von Ihren geradkettigen Homologen, woraus sich ein gesteigertes industrielles Interesse an dieser Stoffklasse ergibt. Innerhalb der vorliegenden Untersuchungen wurde ein homogenkatalysiertes Verfahren zur Herstellung verzweigter Oleochemikalien mittels Tandemreaktion linolhaltiger Fettsäurederivate und Ethen weiterentwickelt. In den Miniplant‐Versuchen konnte der Katalysator mithilfe eines temperaturgesteuerten Mehrkomponenten‐Lösungsmittelsystems über eine Versuchsdauer von 100 h erfolgreich recycelt werden.
Single‐Molecule Studies on the Label Number Distribution of Fluorescent Markers
Authors: Grußmayer Kristin S. , Kurz Anton , Herten Dirk‐Peter 
Published: February 2014

AbstractOver the past decade, a vast variety of different fluorescent labeling systems have emerged for use in fluorescence microscopy and fluorescence‐based analytical techniques. A difficulty frequently arising when quantifying fluorescently labeled samples is that the number of labels per protein is neither well defined, for example, due to multiple functional groups that can undergo covalent coupling with activated dyes, nor well known, for example, due to limited methods mostly estimating ensemble averages. Herein, we use a recently established method that evaluates the statistics of multiple photon detection events to measure the label number distribution of different fluorescent marker molecules at the single‐molecule level. We tested five different far‐red dyes frequently used for fluorescence labeling and found all of them suitable for our counting method. We used two dyes, ATTO647N and Alexa647, to investigate the label number distribution of fluorescently labeled proteins. In the experiments, we found that the label number distribution of antibodies and streptavidin has a significant fraction of molecules labeled with two, three, or more fluorophores. In contrast, the distribution of label numbers for nanobodies resembles the one acquired for SNAP‐tag, which can have a maximum of one label per protein. This is also reflected in the ensemble degree of labeling, which is in good agreement for the latter samples, whereas stronger deviations were observed for antibodies and streptavidin. Our single‐molecule studies enable full characterization of the label number distribution for various fluorescent markers. This work puts quantitative studies on the stoichiometry of fluorescently tagged oligomers and protein aggregates into perspective.
Geometrical Isomerism of RuII Dye‐Sensitized Solar Cell Sensitizers and Effects on Photophysical Properties and Device Performances
Authors: Hu Fa‐Chun , Wang Sheng‐Wei , Chi Yun , Robertson Neil , Hewat Tracy , Hu Yue , Liu Shih‐Hung , Chou Pi‐Tai , Yang Po‐Fan , Lin Hao‐Wu 
Published: February 2014

AbstractTo supplement our study on thiocyanate‐free ruthenium sensitizers (TFRS) for dye‐sensitized solar cells (DSSCs), which belong to a class of RuII‐based complexes coordinated by a single 4,4′‐dicarboxylic acid‐2,2′‐bipyridine and two symmetrically arranged functionalized trans‐azolate chelates, we carefully isolated and characterized the second and less‐abundant stereoisomer, in which the two pyridyl azolate ancillaries are asymetrically cis‐arranged to each other. Two distinctive ancillaries, namely: 5‐[4‐(5‐hexyl‐2‐thienyl)‐2‐pyridinyl]‐3‐trifluoromethyl pyrazole and 5‐(6‐tert‐butyl‐1‐isoquinolinyl)‐3‐trifluoromethyl pyrazole, were employed in this study, giving a total of four sensitizers, that is, thienyl substituted TFRS‐2 a and 2 b, and isoquinolinyl substituted TFRS‐52 a and 52 b, in which the suffix b indicates the cis‐stereoisomers. To gain insight into their fundamental properties their photophysical, electrochemical, and spectroelectrochemical behavior was investigated by density functional theory. Upon comparison of the correspondingly fabricated DSSCs, the sensitizers TFRS‐2 a and 52 a yielded significantly higher conversion efficiencies than their asymmetrical cis‐counterparts, TFRS‐2 b and 52 b. To rationalize the cell performances charge extraction/photovoltage decay and impedance spectroscopic measurements were carried out to compare the rates of interfacial electron recombination from the TiO2 conduction band to the electrolyte.
Discontinuous Thermal Diffusivity Change due to the Anchoring Transition of a Liquid Crystal on a Perfluoropolymer Surface
Authors: Uehara Michiru , Aya Satoshi , Araoka Fumito , Ishikawa Ken , Takezoe Hideo , Morikawa Junko 
Published: February 2014

AbstractThermal diffusivity of a liquid crystal, 4′‐butyl‐4‐heptyl‐bicyclohexyl‐4‐carbonitrile, was measured using a temperature wave method. The liquid crystal was sandwiched by two glass substrates, which were treated with three different surface agents for providing distinct molecular orientations. Here, we demonstrate that: 1) a large thermal diffusivity anisotropy arising from different orientations, that is, planar and homeotropic states, was found in the nematic and smectic A phases; 2) when substrates were coated with a perfluoropolymer, abrupt changes of the thermal diffusivity were observed in the nematic phase both on cooling and heating due to the discontinuous anchoring transition between planar and homeotropic states. The temperature dependence of the thermal diffusivity anisotropy was well described by a power law, with an exponent of 0.27 according to the mean‐field theory.
Influence of Spiral Framework on Nonlinear Optical Materials
Authors: Hu Yang‐Yang , Sun Shi‐Ling , Tian Wen‐Tao , Tian Wei Quan , Xu Hong‐Liang , Su Zhong‐Min 
Published: February 2014

AbstractA series of spiral donor–π–acceptor frameworks (i.e. 2–2, 3–3, 4–4, and 5–5) based on 4‐nitrophenyldiphenylamine with π‐conjugated linear acenes (naphthalenes, anthracenes, tetracenes, and pentacenes) serving as the electron donor and nitro (NO2) groups serving as the electron acceptor were designed to investigate the relationships between the nonlinear optical (NLO) responses and the spirality in the frameworks. A parameter denoted as D was defined to describe the extent of the spiral framework. The D value reached its maximum if the number of NO2 groups was equal to the number of fused benzene rings contained in the linear acene. A longer 4‐nitrophenyldiphenylamine chain led to a larger D value and, further, to a larger first hyperpolarizability. Different from traditional NLO materials with charge transfer occurring in the one‐dimensional direction, charge transfer in 2–2, 3–3, 4–4, and 5–5 occur in three‐dimensional directions due to the attractive spiral frameworks, and this is of great importance in the design of NLO materials. The origin of such an enhancement in the NLO properties of these spiral frameworks was explained with the aid of molecular orbital analysis.
Direct Growth of NiCo2S4 Nanotube Arrays on Nickel Foam as High‐Performance Binder‐Free Electrodes for Supercapacitors
Authors: Pu Jun , Wang Tingting , Wang Haiyang , Tong Yao , Lu Chenchen , Kong Wei , Wang Zhenghua 
Published: February 2014

AbstractArrays of NiCo2S4 nanotubes on nickel foam were prepared by means of a two‐step method, and were directly applied as a binder‐free supercapacitor electrode. Such a binder‐free method enables intimate contact between the current collector and the active materials, and can effectively improve ion and charge transportation. As a result, the electrochemical performances of supercapacitors can be improved. The as‐prepared NiCo2S4 nanotubes/Ni foam electrode shows a high specific capacitance (738 F g−1 at 4 A g−1), excellent rate capability (78 % capacitance retention at 32 A g−1), and good cycling stability (retention capacity of 93.4 % after 4000 cycles), which suggests its promising application for electrochemical capacitors.
Antagonism of mTOR Activity by a Kinetically Inert Rhodium(III) Complex
Authors: Zhong Hai‐Jing , Leung Ka‐Ho , Liu Li‐Juan , Lu Lihua , Chan Daniel Shiu‐Hin , Leung Chung‐Hang , Ma Dik‐Lung 
Published: February 2014

AbstractKinetically inert Group 9 metal complexes have found emerging use as inhibitors of protein kinases or as modulators of protein–protein interactions. A series of cyclometalated rhodium(III) and iridium(III) complexes was investigated as inhibitors of mammalian target of rapamycin (mTOR) activity. Cell‐free and cell‐based experiments revealed rhodium(III) complex 1 to be a potent mTOR inhibitor (IC50=0.01 μM in the cell‐free system), with potency comparable to that of rapamycin. The inhibition by complex 1 was found to be dependent on FK506‐binding protein 12 (FKBP12), which suggests that complex 1 may behave as a modulator of the mTOR–FKBP12 interaction. Preliminary structure–activity relationships indicated that the donor ligand and the nature of the metal center are important determinants for mTOR inhibitory activity. Rhodium(III) complex 1 represents the first metal‐based inhibitor of mTOR activity, and demonstrates the potential of kinetically inert Group 9 complexes as protein–protein interaction modulators.
Iron Oxide Nanoparticles Embedded in Activated Carbons Prepared from Hydrothermally Treated Waste Biomass
Authors: Hao Wenming , Björkman Eva , Yun Yifeng , Lilliestråle Malte , Hedin Niklas 
Published: February 2014

AbstractParticles of iron oxide (Fe3O4; 20–40 nm) were embedded within activated carbons during the activation of hydrothermally carbonized (HTC) biomasses in a flow of CO2. Four different HTC biomass samples (horse manure, grass cuttings, beer production waste, and biosludge) were used as precursors for the activated carbons. Nanoparticles of iron oxide formed from iron catalyst included in the HTC biomasses. After systematic optimization, the activated carbons had specific surface areas of about 800 m2 g−1. The pore size distributions of the activated carbons depended strongly on the degree of carbonization of the precursors. Activated carbons prepared from highly carbonized precursors had mainly micropores, whereas those prepared from less carbonized precursors contained mainly mesopores. Given the strong magnetism of the activated carbon–nano‐Fe3O4 composites, they could be particularly useful for water purification.
A class of rational coefficients biorthogonal Hilbert‐pairs
Authors: Tay David B. H. , Murugesan Selvaraaju 
Published: February 2014

SummaryTwo filter banks whose corresponding wavelets are related via the Hilbert transform are said to form a Hilbert‐pair. A simple technique for designing biorthogonal Hilbert‐pairs is the common‐factor technique. The technique yields approximately linear‐phase filters but with irrational coefficients in general. This paper proposes a technique to rationalize the coefficients while preserving the perfect reconstruction and vanishing moment properties of the filters. The rational coefficient filters can be implemented efficiently without any multipliers using simple shifts and adds. The characteristic and analytic qualities of the rationalized filters are comparable with that of the original irrational filters. Copyright © 2014 John Wiley & Sons, Ltd.
SWIFT—scalable clustering for automated identification of rare cell populations in large, high‐dimensional flow cytometry datasets, Part 1: Algorithm design
Authors: Naim Iftekhar , Datta Suprakash , Rebhahn Jonathan , Cavenaugh James S. , Mosmann Tim R. , Sharma Gaurav 
Published: February 2014

AbstractWe present a model‐based clustering method, SWIFT (Scalable Weighted Iterative Flow‐clustering Technique), for digesting high‐dimensional large‐sized datasets obtained via modern flow cytometry into more compact representations that are well‐suited for further automated or manual analysis. Key attributes of the method include the following: (a) the analysis is conducted in the multidimensional space retaining the semantics of the data, (b) an iterative weighted sampling procedure is utilized to maintain modest computational complexity and to retain discrimination of extremely small subpopulations (hundreds of cells from datasets containing tens of millions), and (c) a splitting and merging procedure is incorporated in the algorithm to preserve distinguishability between biologically distinct populations, while still providing a significant compaction relative to the original data. This article presents a detailed algorithmic description of SWIFT, outlining the application‐driven motivations for the different design choices, a discussion of computational complexity of the different steps, and results obtained with SWIFT for synthetic data and relatively simple experimental data that allow validation of the desirable attributes. A companion paper (Part 2) highlights the use of SWIFT, in combination with additional computational tools, for more challenging biological problems. © 2014 The Authors. Published by Wiley Periodicals Inc.
Neues Mörtelsystem für Dünnbettmauerwerk – “Mörtelband“
Authors: Brameshuber Wolfgang , Graubohm Markus 
Published: February 2014

AbstractVorgestellt wird eine Neuentwicklung im Bereich der Dünnbettmörtel. Es handelt sich hierbei um ein Mörtelband, das im trockenen Zustand auf die Lagerfugenfläche von Planhochlochziegeln aufgelegt und im Anschluss mit einer festgelegten Menge Wasser aktiviert wird. Das Mörtelband besteht aus einem Glasfasergewebe und Trockenmörtel, welcher durch einen wasserlöslichen Schmelzkleber zusammengehalten wird. Das in die Mörtelplatten eingelegte Gewebe dient dabei lediglich einer erhöhten Stabilität der Mörtelplatten beim Vermauern. In diesem Artikel werden zunächst die im Rahmen des Zulassungsverfahrens durchgeführten Untersuchungen beschrieben. Weiterhin wird die Vorgehensweise bei einer Zustimmung im Einzelfall anhand eines Praxisbeispiels aufgezeigt, bei dem das Mörtelband bereits zum Einsatz gekommen ist.New mortar system for thin layer mortar masonry – “mortar pad”. A new development in the field of thin layer mortars is presented. This is a mortar pad which is placed in the dry state on the bed joint area of high precision hollow clay units and which is subsequently activated with a defined amount of water. The mortar pad consists of a fibre glass reinforcement and dry mortar which is kept together by a water‐soluble hot melt adhesive. The fabric placed in the mortar pads only serves to increase the stability of the mortar pads while laying on the units. In this paper, at first the examinations carried out within the framework of the approval procedure are described. Moreover, it is shown how an approval in the individual case is obtained using a practical example where the mortar pad has already been used.
Parkhaus Jahrhunderthalle Bochum – eine perforierte Mauerwerksfassade für den Industriepark West
Authors: Prengel Jon , Andres Matthias , Medzech Jürgen 
Published: February 2014

AbstractAufgrund seiner geringen baulichen Höhe fügt sich das neue Parkhaus wie selbstverständlich in die Umgebung ein und führt das Westpark Konzept des “Grünen Rahmens“ sinnvoll weiter. Das Gebäude ist parallel zur ThyssenKrupp‐Halle ausgerichtet: Nach Osten, Süden und Westen zeigt es ein städtisches Gesicht mit einer perforierten Fassade aus schwarz‐grau‐roten Kohlebrandziegeln, im Norden geht die begrünte Dachlandschaft symbolisch in die Böschung der Auffahrtsstraße über. Die für diesen Ort identitätsstiftenden Gebäude – das “Colosseum“, der Wasserturm und die Jahrhunderthalle – bleiben aus allen wichtigen Blickrichtungen unverstellt. Zwei getrennte Bewegungsabläufe für Autofahrer und Fußgänger ermöglichen eine schnelle Orientierung und kurze, sichere Wege innerhalb des Leitsystems.Multi‐storey car park “Century hall” Bochum – a perforated masonry façade for the industrial area “Industriepark West”. The new multi‐storey car park integrates well and self‐understanding into the surrounding, because the height is quite small, and the architectural concept of Westpark, the so‐called “green frame” is fulfilled perfectly. The building is oriented parallel to the “Thyssen‐Krupp‐Hall”, means it faces to east, south and west as like the town itself showing a perforated façade consisting of black‐grey‐red sintered coal bricks, and to north the green roof scenery symbolically migrates to the acclivity of the driving ramp. The dominating buildings in this area – “Colosseum”, water tower and the century hall – are still visible from each viewing direction. Two separate moving systems allow a very simple orientation for car‐drivers and pedestrians as well and assure a short and safe moving within the guidance system.
Zustimmungsverfahren einer gelochten Parkhausfassade aus Klinkern
Authors: Brameshuber Wolfgang , Saenger Dorothea 
Published: February 2014

AbstractDie Fassade des im Jahr 2013 neu erbauten Parkhauses Westpark an der Jahrhunderthalle in Bochum besteht aus einer gelochten, an einer Stahlkonstruktion rückverankerten Vorsatzschale aus Klinkern. Die offene Bauweise der Fassade erforderte eine Zustimmung im Einzelfall, da die Konstruktion nicht normgerecht ist. Anhand dieses Bauobjektes wird im Beitrag das Verfahren zur Erlangung einer Zustimmung im Einzelfall erläutert. Zum einen wird auf die durchgeführten experimentellen Untersuchungen und die daraus abgeleiteten Materialkennwerte, die für die Bemessung der Fassade erforderlich waren, eingegangen. Zum anderen wird die Überwachung der Ausführungsqualität des Mauerwerks auf der Baustelle aufgezeigt.Approval process of a perforated clinker car park façade. The façade of the in 2013 newly constructed car park Westpark at the Jahrhunderthalle in Bochum consists of a perforated facing made of clinkers, which is back‐anchored to a steel structure. The open design of the façade required an approval in individual cases, because of its non‐standard design. On the basis of this building project, the process for obtaining an approval in individual cases is explained in the article. On the one hand, the performed experimental studies and the derived material parameters, that were required for the design of the façade, are presented. On the other hand, the monitoring of the quality of execution of the masonry on site is shown.