bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nanomaterials for Ultrasensitive Protein Detection
Authors: Zhang Yi , Guo Yongming , Xianyu Yunlei , Chen Wenwen , Zhao Yuyun , Jiang Xingyu 
Published: June 2013

AbstractThe advances of nanomaterials have provided exciting technologies and novel materials for protein detection, based on the unique properties associated with nanoscale phenomena such as plasmon resonance, catalysis and energy transfer. This article reviews a series of nanomaterials including nanoparticles, nanofibers, nanowires, and nanosheets, and evaluates their performances in the application for protein detection, focusing on approaches that realize ultrasensitive detection. Many of these nanomaterials were used to analyze clinically relevant protein biomarkers. Their detection in the picomolar, femtomolar or even zeptomolar regime has been realized, sometimes even with naked‐eye readout. We summarize the detection methods and results according to materials and targets, review the current challenges, and discuss the solution in the context of technological integration such as combining nanomaterials with microfluidics, and classical analytical technologies.
Near‐Infrared Light‐Mediated Nanoplatforms for Cancer Thermo‐Chemotherapy and Optical Imaging
Authors: Zhang Zhenjiang , Wang Jing , Chen Chunying 
Published: June 2013

AbstractWhile thermo‐chemotherapy has proved to be effective in optimizing the efficacies of cancer treatments, traditional chemotherapy is subject to adverse side effects and heat delivery is often challenging in operation. Some photothermal inorganic nanoparticles responsive to near infrared light provide new opportunities for simultaneous and targeted delivery of heat and chemotherapeutics to the tumor sites in pursuit of synergistic effects for efficacy enhancement. The state of the art of nanoparticle‐induced thermo‐chemotherapy is summarized and the advantages and challenges of the major nanoplatforms based on gold nanoparticles, carbon nanomaterials, palladium nanosheets, and copper‐based nanocrystals are highlighted. In addition, the optical‐imaging potentials of the nanoplatforms that may endow them with imaging‐guided therapy and therapeutic‐result‐monitoring capabilities are also briefly discussed.
Cassava starch‐based foams reinforced with bacterial cellulose
Authors: da Silva André , Nievola Letícia Maciel , Tischer Cesar Augusto , Mali Suzana , Faria‐Tischer Paula C.S. 
Published: June 2013

ABSTRACTThe objective of this work was to produce composite foams trays based on cassava starch and reinforced with bacterial cellulose using a baking process. Bacterial cellulose (native and modified by a mercerization process) was incorporated into starch composite foams by two methods: direct incorporation of bacterial cellulose powder into the starch matrix during baking process (method 1) or coating the trays surface with bacterial cellulose films (method 2) after they were produced. All formulations resulted in well‐shaped trays, and the addition of bacterial cellulose by method 1 improved the foaming ability of starch producing more expanded and thicker trays. The water absorption capacity was reduced by the incorporation of bacterial cellulose, independently of the method of incorporation. The elongation was improved in trays produced by method 2. These results demonstrate that the incorporation of native or modified cellulose was able to improve some properties of cassava starch trays. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3043–3049, 2013
Improved Hydrogen‐Storage Thermodynamics and Kinetics for an RbF‐Doped Mg(NH2)2–2 LiH System
Authors: Li Chao , Liu Yongfeng , Gu Yingjie , Gao Mingxia , Pan Hongge 
Published: June 2013

AbstractThe introduction of RbF into the Mg(NH2)2–2 LiH system significantly decreased its (de‐)hydrogenation temperatures and enhanced its hydrogen‐storage kinetics. The Mg(NH2)2–2 LiH–0.08 RbF composite exhibits the optimal hydrogen‐storage properties as it could reversibly store approximately 4.76 wt % hydrogen through a two‐stage reaction with the onset temperatures of 80 °C for dehydrogenation and 55 °C for hydrogenation. At 130 °C, approximately 70 % of hydrogen was rapidly released from the 0.08 RbF‐doped sample within 180 min, and the fully dehydrogenated sample could absorb approximately 4.8 wt % of hydrogen at 120 °C. Structural analyses revealed that RbF reacted readily with LiH to convert to RbH and LiF owing to the favorable thermodynamics during ball‐milling. The newly generated RbH participated in the following dehydrogenation reaction, consequently resulting in a decrease in the reaction enthalpy change and activation energy.
Energieeffiziente Beleuchtung in Museen unter Einbeziehung konservatorischer Aspekte
Authors: Kaase Heinrich , Aydınlı Sırrı , Gramm Stefan 
Published: June 2013

AbstractDer Energiebedarf von Gebäuden ist in den letzten Jahren durch die Vorgabe von EU‐Richtlinien und durch nationale Normen begrenzt worden und erfordert eine entsprechende Bewertung der Gebäude zum Nachweis der jeweiligen Energiebedarfszahlen. Dies ist auch auf öffentliche Gebäude wie Museen umzusetzen. Die Themenschwerpunkte Heizung, Kühlung, Behaglichkeit, Lebenszyklusanalyse, konservatorische Klimaanforderungen, Lüftung, Strömungssimulation, Bausubstanzerhaltung und Raumakustik werden in einem Verbundprojekt des BMWi behandelt. Zusätzlich ist ergänzend die Umsetzung der energetisch optimierten Beleuchtung und Erkennbarkeit in abgesicherte Planungsvorschläge zu erarbeiten. Dies gilt sowohl für den Einsatz neuer Lampen‐ und Vorschalttechnik als auch für den kombinierten Einsatz der Tageslichttechnik und elektronischer Kontrollsysteme.Energy‐efficient lighting in museums, taking conservation into account. Energy demand in buildings has been restricted in recent years by EU Directives and national standards. Buildings now need to be assessed as proof that they meet the relevant energy demand requirements. These assessments must also be performed on public buildings, including museums. As part of a collaborative project, the BMWi (Federal Ministry of Economics and Technology) is currently addressing the issues of heating, cooling, comfort, life‐cycle analysis, conservation‐related requirements for air‐conditioning, ventilation, flow simulation, structural preservation and acoustics. The project will also involve the development of definitive design guidance for implementing lighting and visibility with maximum energy efficiency. This will cover both new lamp and ballast technology and the combined use of daylight technology with electronic control systems.
EnEff:Stadt – Energiekonzept‐Berater für Stadtquartiere
Authors: Erhorn‐Kluttig Heike , Erhorn Hans , Weber Juri , Wössner Simon , Budde Eike 
Published: June 2013

AbstractIm Rahmen des Begleitforschungsvorhabens zur EnEff:Stadt‐Forschungsinitiative des Bundesministeriums für Wirtschaft und Technologie (BMWi) wurde vom Fraunhofer‐Institut für Bauphysik eine Softwarelösung entwickelt, die Stadtplaner und andere Akteure in diesem Bereich in den ersten Planungsphasen unterstützt. Innerhalb des IEA ECBCS Annex 51 wurde in Zusammenarbeit mit internationalen Partnern hieraus ebenfalls eine englischsprachige Version mit länderabhängigen Rahmenbedingungen und Informationen erstellt. Die Software mit dem Namen “Energiekonzept‐Berater für Stadtquartiere“ (“District Energy Concept Adviser“) enthält eine Sammlung von individuellen Hilfsinstrumenten für die Planung.Das Herz der Software ist ein Tool, das ein Stadtquartier energetisch bewertet. Dazu werden Gebäudetypen und weitere vorkonfigurierte Systeme herangezogen, um eine einfache und schnelle Abbildung der Gebäude im Quartier zu ermöglichen. Dadurch benötigt der Anwender nur wenige Schritte, um das Energieeinsparpotenzial von verschiedenen Strategien aus dem Bereich der Gebäudehülle, der Anlagentechnik und zentralen Energieversorgungssystemen zu ermitteln.EnEff:Stadt – The District Energy Concept Adviser. Within the framework of the German research initiative EnEff:Stadt (launched by the German Federal Ministry for Economy and Technology), Fraunhofer Institute for Building Physics IBP has developed a computer programme to support actors in the field of urban planning during the first stages of planning energy‐efficient district concepts. This programme was developed in collaboration with international partners from IEA ECBCS Annex 51 “Energy Efficient Communities“ and comprises a set of individual supporting tools.The very heart of the programme is a tool for the energy assessment of districts, which uses archetypes and other pre‐set configurations to allow for a simple and quick data input mapping all the buildings in the district. Thus it takes the user just a few steps to identify the energy saving potential of various strategies in the areas of building construction, technical building systems, and centralized supply systems.
Nutzenergiebedarfe für Heizen und Kühlen nach neuer DIN V 18599
Authors: Maas Anton , Höttges Kirsten 
Published: June 2013

AbstractMit der Neuausgabe der DIN V 18599‐2 Ende 2011 ergeben sich Änderungen und Neuerungen bei der Berechnung der Nutzenergiebedarfe für Heizen und Kühlen von Wohn‐ und Nichtwohngebäuden. Diese werden zusammenfassend dargestellt, Hintergründe erläutert sowie anhand von Beispielrechnungen die Auswirkungen auf die energetische Bewertung von Gebäuden aufgezeigt. Die detaillierte Betrachtung umfasst die Themenbereiche saisonaler Luftwechsel bei Wohngebäuden, bedarfsgerechte Fensterlüftung bei Nichtwohngebäuden, Gebäudeautomation und neue Klimadatensätze.Building energy needs for heating and cooling according to new DIN V 18599. Along with the new issue of DIN V 18599‐2 at the end of year 2011 there are modifications and innovations concerning the calculation method of energy needs for heating and cooling in residential and non‐residential buildings. These aspects will be summarised, backgrounds will be explained and the consequences for the assessment of energy efficiency of buildings will be displayed by using sample calculation results. The detailed reflection encloses the topic seasonal air change rate for residential buildings, demand orientated window airing for non‐residential windows, building automation (energy management systems) and new climatic data sets.
Personal distributed exposimeter for radio frequency exposure assessment in real environments
Authors: Thielens Arno , De Clercq Hans , Agneessens Sam , Lecoutere Jeroen , Verloock Leen , Declercq Frederick , Vermeeren Günter , Tanghe Emmeric , Rogier Hendrik , Puers Robert , Martens Luc , Joseph Wout 
Published: June 2013

AbstractFor the first time, a personal distributed exposimeter (PDE) for radio frequency (RF) measurements is presented. This PDE is designed based on numerical simulations and is experimentally evaluated using textile antennas and wearable electronics. A prototype of the PDE is calibrated in an anechoic chamber. Compared to conventional exposimeters, which only measure in one position on the body, an excellent isotropy of 0.5 dB (a factor of 1.1) and a 95% confidence interval of 7 dB (a factor of 5) on power densities are measured. Bioelectromagnetics. 34:563–567. © 2013 Wiley Periodicals, Inc.
Analysis of the Stability of Metal Working Fluid Emulsions by Turbidity Spectra
Authors: Glasse B. , Assenhaimer C. , Guardani R. , Fritsching U. 
Published: June 2013

AbstractThe physical stability of emulsions can be related to changes in the droplet size distribution over time. Stability control of emulsions used as metal working fluids is an important factor for the machining industry due to the decreased performance of aged and broken emulsions. Results of turbidimetric spectra measurements of metal working fluids for process control purposes and emulsion stability monitoring are discussed. Metal working emulsions were artificially destabilized by admixing salts which resulted in droplet coagulation. The destabilization process was investigated by measuring the droplet size distribution and the turbidity spectra over time. The results were evaluated based on quantitative criteria proposed in the literature. The applicability of these criteria to evaluate metal working fluids during machining operations is discussed.
Linear Free‐Energy Correlations for the Vinylheptafulvene Ring Closure: A Probe for Hammett σ Values
Authors: Broman Søren Lindbæk , Jevric Martyn , Nielsen Mogens Brøndsted 
Published: June 2013

AbstractLinear free‐energy relationships, like Hammett correlations, are fundamental in physical organic chemistry for the elucidation of reaction mechanisms. In this work, we show that Hammett correlations exist for the ring closure of six different model systems of vinylheptafulvenes (VHFs) to their corresponding dihydroazulenes (DHAs). These first‐order reactions were easily followed by UV/Vis absorption spectroscopy on account of the significantly different absorption characteristics between VHFs and DHAs. Opposing effects displayed by substituent groups at two different positions are conveniently accounted for by simply subtracting the two Hammett σ values of each group. The linear correlations readily allow us to obtain unknown and approximate Hammett σ values for previously uninvestigated substituents. We also show that they can provide alternative values to the standard ones. We present values for a variety of substituent groups ranging from alkynes, sulfones, sulfoxides, and different heteroaromatics. The electronic effects exerted by substituent groups on VHFs are also reflected in their absorption maxima. Thus, we have established an empirical relationship between the absorption maximum of the VHF and the Hammett σ values of its substituents. This fine‐tuning of electronic properties is particularly important for the ongoing efforts of using the DHA/VHF molecular switch in molecular electronics devices.
Well‐Dispersed Pt Cubes on Porous Cu Foam: High‐Performance Catalysts for the Electrochemical Oxidation of Glucose in Neutral Media
Authors: Niu Xiangheng , Lan Minbo , Zhao Hongli , Chen Chen 
Published: June 2013

AbstractThe investigation of highly efficient catalysts for the electrochemical oxidation of glucose is the most critical challenge to commercialize nonenzymatic glucose sensors, which display a few attractive superiorities including the sufficient stability of their properties and the desired reproducibility of results over enzyme electrodes. Herein we propose a new and very promising catalyst: Pt cubes well‐dispersed on the porous Cu foam, for the the electrochemical oxidation reaction of glucose in neutral media. The catalyst is fabricated in situ on a homemade screen‐printed carbon electrode (SPCE) substrate through initially synthesizing the three‐dimensional (3D) porous Cu foam using a hydrogen evolution assisted electrodeposition strategy, followed by electrochemically reducing the platinic precursor simply and conveniently. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) proofs demonstrate that Pt cubes, with an average size (the distance of opposite faces) of 185.1 nm, highly dispersed on the macro/nanopore integrated Cu foam support can be reproducibly obtained. The results of electrochemical tests indicate that the cubic Pt‐based catalyst exhibits significant enhancement on the catalytic activity towards the electrooxidation of glucose in the presence of chloride ions, providing a specific activity 6.7 times and a mass activity 5.3 times those of commercial Pt/C catalysts at −0.4 V (vs. Ag/AgCl). In addition, the proposed catalyst shows excellent stability of performance, with only a 2.8 % loss of electrocatalytic activity after 100 repetitive measurements.
Synthetic, Spectroscopic, and DFT Studies of Iron Complexes with Iminobenzo(semi)quinone Ligands: Implications for o‐Aminophenol Dioxygenases
Authors: Bittner Michael M. , Kraus David , Lindeman Sergey V. , Popescu Codrina V. , Fiedler Adam T. 
Published: June 2013

AbstractThe oxidative CC bond cleavage of o‐aminophenols by nonheme Fe dioxygenases is a critical step in both human metabolism (the kynurenine pathway) and the microbial degradation of nitroaromatic pollutants. The catalytic cycle of o‐aminophenol dioxygenases (APDOs) has been proposed to involve formation of an FeII/O2/iminobenzosemiquinone complex, although the presence of a substrate radical has been called into question by studies of related ring‐cleaving dioxygenases. Recently, we reported the first synthesis of an iron(II) complex coordinated to an iminobenzosemiquinone (ISQ) ligand, namely, [Fe(Tp)(tBuISQ)] (2 a; where Tp=hydrotris(3,5‐diphenylpyrazol‐1‐yl)borate and tBuISQ is the radical anion derived from 2‐amino‐4,6‐di‐tert‐butylphenol). In the current manuscript, density functional theory (DFT) calculations and a wide variety of spectroscopic methods (electronic absorption, Mössbauer, magnetic circular dichroism, and resonance Raman) were employed to obtain detailed electronic‐structure descriptions of 2 a and its one‐electron oxidized derivative [3 a]+. In addition, we describe the synthesis and characterization of a parallel series of complexes featuring the neutral supporting ligand tris(4,5‐diphenyl‐1‐methylimidazol‐2‐yl)phosphine (TIP). The isomer shifts of about 0.97 mm s−1 obtained through Mössbauer experiments confirm that 2 a (and its TIP‐based analogue [2 b]+) contain FeII centers, and the presence of an ISQ radical was verified by analysis of the absorption spectra in light of time‐dependent DFT calculations. The collective spectroscopic data indicate that one‐electron oxidation of the FeII–ISQ complexes yields complexes ([3 a]+ and [3 b]2+) with electronic configurations between the FeIII–ISQ and FeII–IBQ limits (IBQ=iminobenzoquinone), highlighting the ability of o‐amidophenolates to access multiple oxidation states. The implications of these results for the mechanism of APDOs and other ring‐cleaving dioxygenases are discussed.
ChemInform Abstract: Crystal and Electronic Structures of the New Quaternary RCr3Si2C (R: Y, Gd—Tm, Lu, U) Compounds.
Authors: Lemoine Pierric , Tobola Janusz , Verniere Anne , Malaman Bernard 
Published: June 2013

AbstractThe new quaternary intermetallic compounds LnCr3Si2C (Ln: Y, Gd—Tm, Lu, U) are melt‐casted from the elements and characterized by both powder and single crystal XRD.
ChemInform Abstract: Synthesis, Characterization and Performance of Cd1‐xInxTe Compound for Solar Cell Applications.
Authors: Shenouda Atef Y. , Rashad Mohamed M. , Chow Lee 
Published: June 2013

AbstractSamples of the title compound with 0 ≤ x ≤ 1.0 are prepared by reaction of CdSO4, InCl3, and TeCl4 in aqueous NH3 solution (pH 9) followed by addition of NaBH4 solution (85 °C, 2 h) to reduce the formed hydroxide phase to the alloy.
ChemInform Abstract: Structural and Thermoelectric Properties of Cu6Fe4Sn12Se32 Single Crystal.
Authors: Suekuni K. , Tsuruta K. , Fukuoka H. , Koyano M. 
Published: June 2013

AbstractA single crystal of the title compound is obtained from a stoichiometric mixture of the elements (evacuated quartz tube, 923 K, 3 h; very slow cooling to 873 K).
ChemInform Abstract: Reversible Oxygen Removal and Uptake in the La2ZnMnO6 Double Perovskite: Performance in Symmetrical SOFC Cells.
Authors: Martinez‐Coronado R. , Aguadero A. , Alonso J. A. , Fernandez‐Diaz M. T. 
Published: June 2013

AbstractPolycrystalline La2ZnMnO6 is prepared by sol‐gel synthesis starting with stoichiometric amounts of La2O3, ZnO, and MnCO3 dissolved in citric acid and some drops of HNO3 (1.
ChemInform Abstract: Synthesis, Structure, Optical Property, and Electronic Structure of Ba7AgGa5Se15.
Authors: Yin Wenlong , He Ran , Feng Kai , Hao Wenyu , Yao Jiyong , Wu Yicheng 
Published: June 2013

AbstractReddish orange single crystals of the new title compound are prepared by solid state reaction of BaSe and AgGaSe2 in the molar ratio 2:1 (sealed silica tube, 1273 K, 48 h).
ChemInform Abstract: Novel Robust Benzimidazolylidene Palladium Complexes: Synthesis, Structure, and Catalytic Applications in Amination of Chloroarenes.
Authors: Fang Weiwei , Jiang Jian , Xu Yong , Zhou Yuefei , Tu Tao 
Published: June 2013

AbstractThree pyridine stabilized palladium N‐heterocyclic carbenes are developed to catalyze the amination of (hetero)aryl chlorides.
ChemInform Abstract: Rhodium(III)‐Catalyzed N‐Nitroso‐Directed C—H Olefination of Arenes. High‐Yield, Versatile Coupling under Mild Conditions.
Authors: Liu Baoqing , Fan Yang , Gao Yang , Sun Chao , Xu Cheng , Zhu Jin 
Published: June 2013

AbstractOrtho‐olefination of a variety of N‐nitroso compounds proceeds with excellent regioselectivity and high yields and tolerates various functional groups.
ChemInform Abstract: Allylation of Aldehydes with Potassium Allyltrifluoroborate Catalyzed by Lanthanide‐Based Metal‐Organic Framework.
Authors: Freitas Juliano C. R. , de Oliveira Cristiane K. , Cunha Edilanio C. , Malvestiti Ivani , Alves Severino Jr. , Longo Ricardo L. , Menezes Paulo H. 
Published: June 2013

AbstractThe reaction is advantageous with regards to short times, high yields, and reusability of the heterogeneous catalyst.
ChemInform Abstract: Nickel‐Mediated Inter‐ and Intramolecular C—S Coupling of Thiols and Thioacetates with Aryl Iodides at Room Temperature
Authors: Xu Xiao‐Bo , Liu Jian , Zhang Jian‐Jian , Wang Ya‐Wen , Peng Yu 
Published: June 2013

Abstract24 examples for the intermolecular coupling and 14 examples for the intramolecular cyclization
ChemInform Abstract: Low‐Temperature Carbon—Chlorine Bond Activation by Bimetallic Gold/Palladium Alloy Nanoclusters: An Application to Ullmann Coupling.
Authors: Dhital Raghu Nath , Kamonsatikul Choavarit , Somsook Ekasith , Bobuatong Karan , Ehara Masahiro , Karanjit Sangita , Sakurai Hidehiro 
Published: June 2013

AbstractBimetallic gold/palladium alloy nanoclusters are found to be efficient catalysts in the Ullmann coupling of chloroarenes in aqueous media at low temperatures.
ChemInform Abstract: Distinctive meta‐Directing Group Effect for Iridium‐Catalyzed 1,1‐Diarylalkene Enantioselective Hydrogenation.
Authors: Bess Elizabeth N. , Sigman Matthew S. 
Published: June 2013

AbstractA novel iridium catalyst is prepared and tested in the enantioselective hydrogenation of 1,1‐diarylalkenes (I) and (III) bearing a meta‐directing group.
ChemInform Abstract: Synthesis and Biological Applications of Some Novel Spiro Heterocycles Containing 1,3,4‐Thiadiazine, Thiazole, and Oxazole Derivatives.
Authors: Dabholkar Vijay V. , Bhusari Nitin V. 
Published: June 2013

AbstractMost of the novel spiro‐heterocycles show significant activity against gram‐positive as well as gram‐negative bacteria.
ChemInform Abstract: Concise Synthesis of α‐Substituted 2‐Benzofuranmethamines and Other 2‐Substituted Benzofurans via α‐Substituted 2‐Benzofuranmethyl Carbocation Intermediates.
Authors: Wongsa Nikhom , Sommart Ubonta , Ritthiwigrom Thunwadee , Yazici Arife , Kanokmedhakul Somdej , Kanokmedhakul Kwanjai , Willis Anthony C. , Pyne Stephen G. 
Published: June 2013

AbstractAgNO3‐catalyzed cyclization of propargyl amines of type (I) and (VI) followed by 1,3‐allylic rearrangement allows a new access to 2‐benzofuranmethamines.
ChemInform Abstract: Diastereoselective Synthesis of 1‐(Tetrahydrofuran‐3‐yl)‐1,3‐dihydroisobenzofuran Derivatives via Prins Bicyclization.
Authors: Reddy B. V. Subba , Jalal Sayed , Borkar Prashant , Yadav J. S. , Reddy P. Gurava , Sarma A. V. S. 
Published: June 2013

AbstractDiol (I) reacts with various aldehydes to give the title skeleton as a subunit of various natural products.
ChemInform Abstract: Thienopyrimidinedione Formation versus Ester Hydrolysis from Ureido Carboxylic Acid Methyl Ester.
Authors: Reille‐Seroussi Marie , Labruere Raphael , Inguimbert Nicolas , Broussy Sylvain , Gagey‐Eilstein Nathalie , Liu Wang‐Qing , Vidal Michel , Huguenot Florent 
Published: June 2013

AbstractThe process is studied for a broad spectrum of substrates with respect to product ratio of ester hydrolysis and cyclization to pyrimidinediones.