bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of salts and absorption cycles in the capillary coefficient of building materials with different joints
Authors: Guimarães Ana S. , Delgado João M. P. Q. , de Freitas Vasco P. 
Published: December 2016

AbstractRising damp can reduce building's aesthetical value, comfort and health mark, when combined with the existence of soluble salts in the building components and in the ground water can even lead to material decomposition and compromise its structural performance.This research work intended to study the effect of different absorption cycles of two saturated solutions of sodium sulphate and potassium chloride in the capillary absorption curves obtained through the partial immersion of red brick samples without and with different joints. The results revealed significant differences in the capillary coefficients obtained when samples were tested with salt solutions.Wirkung von Salzen und Absorptionsprozessen auf den Kapillartransportkoeffizienten von Baustoffen mit verschiedenen Fugen. Aufsteigende Feuchte kann den ästhetischen Wert, den Komfort und die Gesundheitswirkung von Gebäuden negativ beeinflussen. Lösliche Salze in den Bauteilen und im Grundwasser können hierbei sogar Zersetzungsprozesse auslösen und die Standsicherheit beeinträchtigen.Diese Forschungsarbeit untersucht die Wirkung unterschiedlicher Absorptionszyklen von gesättigter Natriumsulfat‐ bzw. Kaliumchlorid‐Lösung auf die kapillaren Absorptionskurven. Für den Versuch wurden Prüfkörper aus Backstein mit und ohne Fugen teilweise eingetaucht. Die Ergebnisse zeigten bei Salzlösungen signifikante Unterschiede der Kapillartransportkoeffizienten.
Modeling low temperature district heating networks for the utilization of local energy potentials
Authors: Heissler Karl Martin , Franke Laura , Nemeth Isabell , Auer Thomas 
Published: December 2016

AbstractIn this paper a modeling approach for the simulation of a low temperature district heating network with seasonal heat storage, collectors and buildings is presented. The approach combines the strengths of the simulation environments Dymola and TRNSYS through the tool “Building Controls Virtual Testbed” to a simulation framework. It is capable of simulating alternating flow conditions within a detailed pipe network along with the heat demand and supply of network‐connected buildings and solar collectors. An ecological model settlement in Munich serves as case study for the framework.Modellierung von Niedrigtemperaturnetzen zur Nutzung lokaler Energiepotenziale in Quartieren. Dieser Beitrag stellt einen Modellierungsansatz für die Simulation eines Niedrigtemperaturnetzes mit saisonalem Wärmespeicher, Solarkollektoren und Gebäuden vor. Der Ansatz vereint die Stärken der Simulationsumgebungen Dymola und TRNSYS durch das Tool “Building Controls Virtual Testbed” zu einer Co‐Simulationsumgebung. Diese ist in der Lage, wechselnde Strömungsrichtungen innerhalb eines detaillierten Rohrnetzes und Wärmeangebot und ‐bedarf der an das Netz angebundenen Gebäude und Solarkollektoren abzubilden. Eine “Ökologische Mustersiedlung” in München dient als Fallbeispiel.
Messtechnische Bestimmung von Aufwandszahlen unterschiedlicher Flächentemperiersysteme
Authors: Pfafferott Jens , Himmelsbach Sascha , Lang Tobias , Frietsch Mario 
Published: December 2016

AbstractMit der Messung des Wärme‐ und Kälteverbrauchs im Labor gelingt es, sowohl thermisch träge als auch agile Flächentemperiersysteme unter praxisnahen, dynamischen Bedingungen messtechnisch zu bewerten. Werden Nutzwärme‐ und Nutzkältebedarf berechnet und ins Verhältnis zu den gemessenen Verbräuchen gesetzt, können die Aufwandzahlen für die Nutzenübergabe ece für verschiedene Flächentemperiersysteme und in Kombinationen mit anderen Übergabesystemen unter verschiedenen Nutzungsbedingungen und für unterschiedliche Betriebsführungsstrategien bestimmt werden. Damit stehen Aufwandszahlen auf Basis kalorischer Messungen zur Verfügung, die je nach Aufgabenstellung entweder produkt‐ oder objektbezogen in der Planung komplexer Energiekonzepte verwendet werden können und die tatsächlichen Aufwandszahlen eh, ce für den Heizfall bzw. ec, ce für den Kühlfall genauer als Literaturwerte bzw. projektbezogen beschreiben.Measurement of energy expenditure factors of various radiant heating and cooling systems. The measurement of heating/cooling consumption is used to evaluate both thermally inert and agile radiant heating and cooling systems under realistic, dynamic conditions in a laboratory. If the net heating/cooling energy demand is calculated, the ratio between calculated demand and measured consumption defines the energy expenditure factor for the heat transfer ece. Thus, ece can be determined under different conditions of use and for different operation strategies and in combination with other heat transfer systems. This provides energy expenditure factors based on caloric measurement which are available either product or object specific. The actual energy expenditure factors eh, ce for the heating mode or ec, ce for the cooling mode can be used in the planning of complex energy concepts since these specific values are more accurate than literature values.
Copper Zinc Thiolate Complexes as Potential Molecular Precursors for Copper Zinc Tin Sulfide (CZTS)
Authors: Fuhrmann Daniel , Dietrich Stefan , Krautscheid Harald 
Published: December 2016

AbstractFive copper zinc thiolate complexes [(iPr3PCu)2(ZnEt2)(edt)]2 (1‐Et), [(iPr3PCu)2(Zn(iPr)2)(edt)]2 (1‐iPr), [(iPr3PCu)4(edt)2(ZnMe2)]2 (2), [(iPr3PCu)3(ZnPh2)(ZnPh)(edt)2]2 (3), and [(iPr3PCu)2Zn2(edt)3]6 (4) were prepared by the reaction of [(iPr3PCu)2(edt)]2 with ZnR2 (R=Me, Et, Ph, iPr) with or without addition of ethanedithiol (edt2−=ethane‐1,2‐dithiolate). The molecular structures of these complexes were determined by single crystal X‐ray diffraction. The ethanedithiolate ligands coordinate in μ3–η1:η2:η1 (2, 4), μ4–η1:η1:η2:η1 (1‐R, 3), and μ5–η1:η1:η2:η1:η1 (2) bridging modes, each sulfur atom binds to two or three metal atoms. Evidence for the presence of the weak Zn−S bonds in solution was provided by NMR spectroscopy. Mixtures of 1‐Et, 1‐iPr, or 3 with Sn(edt)2 were examined by thermogravimetry up to 600 °C, whereupon volatile thermolysis products were identified by mass spectrometry. In all thermolysis experiments, the formation of Cu2ZnSnS4 as main product, besides small amounts of binary metal sulfides, was confirmed by X‐ray powder diffraction (PXRD) and EDX (energy dispersive X‐ray spectroscopy) analysis.
A Multi‐Redox Responsive Cyanometalate‐Based Metallogel
Authors: Mitsumoto Kiyotaka , Cameron Jamie M. , Wei Rong‐Jia , Nishikawa Hiroyuki , Shiga Takuya , Nihei Masayuki , Newton Graham N. , Oshio Hiroki 
Published: December 2016

AbstractA TTF‐based (TTF=tetrathiafulvalene) tridentate ligand (α‐(4′‐methyl‐4,5‐di‐n‐dodecylthylthiotetrathiafulvalene‐5′‐ylthio)‐ α′‐[2,2,2‐tris(1‐pyrazolyl)ethoxy]‐p‐xylene) (L) with long‐chain alkyl moieties was prepared in order to obtain a new multi‐redox active gelator based on a mixed‐metal octanuclear complex [FeIII4NiII4(CN)12(tp)4(L)4](BF4)4 (1). The magnetism, electrochemistry, and gelation behavior of 1 were studied and 1,2‐dichlorobenzene solutions of 1 are shown to display thermoreversible gelation behavior at room temperature. Furthermore, the gel phase of 1 was shown to undergo room‐temperature gel‐to‐sol transformations induced by both the oxidation and reduction of the gelator complex by F4TCNQ or [FeII(Cp*)2], respectively.
Cationic [(Iminophosphine)Nickel(Allyl)]+ Complexes as the First Example of Nickel Catalysts for Direct Hydroamination of Allenes
Authors: Tafazolian Hosein , Schmidt Joseph A. R. 
Published: December 2016

AbstractThe first example of nickel‐catalyzed hydroamination of allenes is reported. The new cationic [(3‐iminophosphine)nickel(allyl)]+ catalysts have been fully characterized and act regioselectively in the catalytic hydroamination of allenes with secondary amines at room temperature.
Intermolecular Aryl C−H Amination through Sequential Iron and Copper Catalysis
Authors: Mostafa Mohamed A. B. , Calder Ewen D. D. , Racys Daugirdas T. , Sutherland Andrew 
Published: December 2016

AbstractA mild, efficient and regioselective method for para‐amination of activated arenes has been developed through a combination of iron and copper catalysis. A diverse range of products were obtained from an operationally simple one‐pot, two‐step procedure involving bromination of the aryl substrate with the powerful Lewis acid iron(III) triflimide, followed by a copper(I)‐catalysed N‐arylation reaction. This two‐step dehydrogenative process for the regioselective coupling of aromatic C−H bonds with non‐activated amines was applicable to anisole‐, phenol‐, aniline‐ and acetanilide‐type aryl compounds. Importantly, the arene substrates were used as the limiting reagent and required no protecting‐group manipulations during the transformation.
Generation and Application of Homoenolate Equivalents Utilizing [1,2]‐Phospha‐Brook Rearrangement under Brønsted Base Catalysis
Authors: Kondoh Azusa , Aoki Takuma , Terada Masahiro 
Published: December 2016

AbstractA new method for catalytic generation of a homoenolate equivalent and its application to carbon−carbon bond formation was developed by utilizing the [1,2]‐phospha‐Brook rearrangement under Brønsted base catalysis. The α‐oxygenated allyl anions, which can serve as homoenolate equivalents, were catalytically generated in situ by treating readily available chalcones with diethyl phosphite or the pre‐formed 1,2‐adducts of diethyl phosphite with chalcones in the presence of a catalytic amount of a phosphazene base, P2‐tBu. The resulting allyl anions were subsequently trapped by various electrophiles, including Michael acceptors, imines, and aldehydes, providing the corresponding adducts in good yields with moderate to good diastereoselectivities.
Frustrierte Lewis‐Paare erlauben Hydrierung ohne Übergangsmetallkatalyse
Authors: Feil Sylvia 
Published: December 2016

AbstractFast jeder Wirkstoff, sei es Medikament, Fungizid, Pestizid oder Dünger, enthält Stickstoffatome. Die leichte Herstellung von Aminen mittels Reduktion von Iminen durch Hydrierung in Abwesenheit von Übergangsmetallen ist daher nicht nur akademisch, sondern auch aus industriellen Aspekten von immensem Interesse.
Design, Synthesis, and Evaluation of 2,9‐Bis[(substituted‐aminomethyl)phenyl]‐1,10‐phenanthroline Derivatives as G‐Quadruplex Ligands
Authors: Gueddouda Nassima Meriem , Hurtado Miyanou Rosales , Moreau Stéphane , Ronga Luisa , Das Rabindra Nath , Savrimoutou Solène , Rubio Sandra , Marchand Adrien , Mendoza Oscar , Marchivie Mathieu , Elmi Lilian , Chansavang Albain , Desplat Vanessa , Gabelica Valérie , Bourdoncle Anne , Mergny Jean‐Louis , Guillon Jean 
Published: December 2016

AbstractGenomic sequences able to form guanine quadruplexes (G4) are found in oncogene promoters, in telomeres, and in 5′‐ and 3′‐untranslated regions as well as introns of messenger RNAs. These regions are potential targets for drugs designed to treat cancer. Herein, we present the design and syntheses of ten new phenanthroline derivatives and characterization of their interactions with G4‐forming oligonucleotides. We evaluated ligand‐induced stabilization and specificity and selectivity of ligands for various G4 conformations using FRET‐melting experiments. We investigated the interaction of compound 1 a (2,9‐bis{4‐[(3‐dimethylaminopropyl)aminomethyl]phenyl}‐1,10‐phenanthroline), which combined the greatest stabilizing effect and specificity for G4, with human telomeric sequences using FRET, circular dichroism, and ESI‐MS. In addition, we showed that compound 1 a interferes with the G4 helicase activity of Saccharomyces cerevisiae Pif1. Interestingly, compound 1 a was significantly more cytotoxic toward two human leukemic cell lines than to normal human blood mononuclear cells. These novel phenanthroline derivatives will be a starting point for further development and optimization of potent G4 ligands that have potential as anticancer agents.
Electronic Spectroscopy of Methylcyanodiacetylene (CH3C5N)
Authors: Turowski Michał , Szczepaniak Urszula , Custer Thomas , Gronowski Marcin , Kołos Robert 
Published: December 2016

AbstractThe results of a study devoted to the electronic spectroscopy of gaseous, solid, and cryogenic matrix‐isolated methylcyanodiacetylene (CH3C5N) are reported. UV absorption and optical phosphorescence spectra of the compound are described here for the first time, and the corresponding vibronic assignments are proposed. UV absorption, studied directly or through the excitation of phosphorescence, revealed the
1E‐‐
1A1 system, very weak
1A2–
1A1 bands, and a strong, broad absorption feature, tentatively identified as
1E–
1A1. Spectral measurements were assisted by quantum chemical calculations at the DFT and ab initio (coupled cluster) levels of theory.
High‐Performance Porphyrin‐Based Dye‐Sensitized Solar Cells with Iodine and Cobalt Redox Shuttles
Authors: Xiang Huaide , Fan Wei , Li Jia Hui , Li Tianyue , Robertson Neil , Song Xiongrong , Wu Wenjun , Wang Zhaohui , Zhu Weihong , Tian He 
Published: December 2016

AbstractRecently, enormous research passion has been devoted to enhance the power conversion efficiency (PCE) of porphyrin sensitizers for dye‐sensitized solar cells (DSSCs), but the major stumbling block is the absorption defect in the visible‐light region. To address this challenge, high‐performance DSSCs are reported based on a new donor–π–acceptor sensitizer FW‐1, 7H‐dibenzo[c,g]carbazole‐substituted and fused zinc porphyrin, co‐sensitized with a benzotriazole‐containing dye (WS‐5) in iodine and cobalt redox systems, and high PCEs of 10.21 and 10.42 %, respectively, were obtained. An unprecedented breakthrough was obtained by making one sensitizer suitable for several electrolyte systems because of its appropriate molecular orbitals and co‐sensitizer.
Stability of tocopherol homologs in soybean, corn, canola, and olive oils under different moisture contents at 25°C
Authors: Jung Jinyeong , Gim Seo Yeong , Lee Chankyu , Kim Mi‐Ja , Lee JaeHwan 
Published: December 2016

The stability of tocopherol homologs and oxidative stability were determined in edible oils including soybean, corn, canola, and olive oils under different relative humidities (RH), ranging from 0 to 93%, at 25°C for 8 months. The degree of oxidation was determined by conjugated dienoic acid (CDA) and p‐anisidine values (p‐AV), and any remaining tocopherols were also analyzed. The stability of tocopherols was significantly influenced by the presence of both moisture and other tocopherol homologs. Soybean and corn oils under low moisture conditions had significant remaining tocopherol levels, whereas canola and olive oils had different stabilities of tocopherols. The presence of δ‐tocopherol, which is found in soybean and corn oils, seems to play an important role in the stability of α‐ and γ‐tocopherols in vegetable oils stored at 25°C. The moisture content of the tested oils was different even when oils were stored at the same RH.Practical application: Many lipid‐rich foods contain tocopherol homologs to extend the shelf – life of the products. The stability of tocopherol homologs was significantly influenced by the presence of moisture, the types of oils, and the concentration of tocopherol homologs. Using the knowledge obtained in this study, shelf‐life of real foods containing oils can be enhanced by modifying the moisture content and concentration and types of tocol homologs.(i) Soybean and corn oils under low moisture conditions had significant remaining tocopherol levels, whereas canola and olive oils had different stabilities of tocopherols; (ii) the presence of δ‐tocopherol, which is found in soybean and corn oils, played an important role in the stability of α‐ and γ‐tocopherols in vegetable oils stored at 25°C; and (iii) the moisture content of the tested oils was different even when oils were stored at the same RH.
Electroreduction of Carbon Dioxide to Formic Acid and Methanol over a Palladium/Polyaniline Catalyst in Acidic Solution: A Study of the Palladium Size Effect
Authors: Zheng Weiran , Man Ho Wing , Ye Lin , Tsang Shik Chi Edman 
Published: December 2016

AbstractWe controlled the reaction temperature and feeding rate of the reducing agent to show that Pd nanoparticles (NPs) with different sizes can be synthesized from the reduction of their precursor on polyaniline (PANI) as a solid support. We used UV/Vis spectroscopy, 1H NMR spectroscopy, and IR spectroscopy to identify the electronic and catalytic interactions between Pd NPs and PANI. For the first time, that the unique redox properties of Pd/PANI display a high overpotential for hydrogen evolution, which suppresses this competitive reaction for the electroreduction of CO2 in an acidic solution. As a result, two main liquid products (HCOOH and CH3OH) can be produced selectively with only trace amounts of CO in the gas phase. The current efficiencies for HCOOH and CH3OH increase with the decreasing Pd NP size within the potential range of −0.5 to −0.9 V. The highest current efficiencies for HCOOH (22.8 %) and CH3OH (5.4 %) are thus obtained over Pd(1.31 nm)/PANI at −0.9 V.
Retention of iron and zinc in yam flour and boiled yam processed from white yam (D. rotundata) varieties
Authors: Maziya‐Dixon Busie , Alamu Emmanuel Oladeji , Dufie Wireko‐Manu Faustina , Robert Asiedu 
Published: December 2016

AbstractThis study investigated the impact of processing on retention of iron and zinc in D. rotundata. Fresh tubers were processed into boiled yam and yam flour and analyzed for zinc, iron, and physicochemical properties. Percent true retention (%TR) was assessed using paired samples and a formula that compensated for loss or gain of moisture and soluble solids. The retention of iron ranged from 55.5% to 98.7% in boiled yam and 25.2% to 54.9% in yam flour; retention of zinc ranged from 49.3% to 97.5% in boiled yam and 18. 9% to 43.1% in yam flour. The amount of iron retained in boiled yam correlated with the amount in the fresh samples (r = .79), likewise in yam flour (r = .82). A similar trend was observed for zinc. From our study, we conclude that retention of iron and zinc is dependent on the variety and processing method used. The information from this study can be used by food scientists and nutritionists in choosing the appropriate processing to increase the retention of high levels of micronutrient in yams and by the yam breeders to adjust their germplasm breeding activities.
Genome‐wide survey in African Americans demonstrates potential epistasis of fitness in the human genome
Authors: Wang Heming , Choi Yoonha , Tayo Bamidele , Wang Xuefeng , Morris Nathan , Zhang Xiang , Broeckel Uli , Hanis Craig , Kardia Sharon , Redline Susan , Cooper Richard S , Tang Hua , Zhu Xiaofeng 
Published: December 2016

ABSTRACTThe role played by epistasis between alleles at unlinked loci in shaping population fitness has been debated for many years and the existing evidence has been mainly accumulated from model organisms. In model organisms, fitness epistasis can be systematically inferred by detecting nonindependence of genotypic values between loci in a population and confirmed through examining the number of offspring produced in two‐locus genotype groups. No systematic study has been conducted to detect epistasis of fitness in humans owing to experimental constraints. In this study, we developed a novel method to detect fitness epistasis by testing the correlation between local ancestries on different chromosomes in an admixed population. We inferred local ancestry across the genome in 16,252 unrelated African Americans and systematically examined the pairwise correlations between the genomic regions on different chromosomes. Our analysis revealed a pair of genomic regions on chromosomes 4 and 6 that show significant local ancestry correlation (P‐value = 4.01 × 10−8) that can be potentially attributed to fitness epistasis. However, we also observed substantial local ancestry correlation that cannot be explained by systemic ancestry inference bias. To our knowledge, this study is the first to systematically examine evidence of fitness epistasis across the human genome.
Prevalence and severity of behavioural symptoms in patients with Korsakoff syndrome and other alcohol‐related cognitive disorders: a systematic review
Authors: Gerridzen Ineke J. , Moerman‐van den Brink Wiltine G. , Depla Marja F. , Verschuur Els M. L. , Veenhuizen Ruth B. , van der Wouden Johannes C. , Hertogh Cees M. P. M. , Joling Karlijn J. 
Published: December 2016

ObjectiveExperiences from clinical practice suggest that behavioural symptoms in patients with Korsakoff syndrome (KS) are a frequent problem. Knowledge about behavioural symptoms is important in understanding and managing these symptoms. The aim of this study is to review the prevalence and severity of behavioural symptoms in KS.MethodsRelevant articles were identified by searching Medline (PubMed), PsycINFO, Embase and CINAHL up to 4 June 2014. Two reviewers independently selected the studies, extracted their baseline data and assessed methodological quality using a standardized checklist.ResultsFifteen studies fulfilled the inclusion criteria. A diversity of diagnoses was used indicating that KS and other alcohol‐related cognitive disorders and terms were used interchangeably. None of the studies were primarily designed to estimate the prevalence or severity of behavioural symptoms in patients with KS. Most studies had serious methodological limitations. The reported prevalence estimates of behavioural symptoms in the included studies varied strongly. Most prevalent were depressive symptoms and disorders (2–50%, median 27%) and agitation and aggression (10–54%, median 27%). None of the reported, mean severity estimates met pathological thresholds. The highest severity estimates were found for apathy.ConclusionsGood quality studies on behavioural symptoms in patients with KS are lacking. Observational research designed to provide reliable estimates of the prevalence and severity of behavioural symptoms in patients with KS is needed. This could improve understanding and managing these symptoms and help care staff to better support the needs of this specific patient group. © 2016 The Authors. International Journal of Geriatric Psychiatry published by John Wiley & Sons Ltd.
Effective human utilization in an original equipment manufacturing (OEM) industry by the implementation of agile manufacturing: A POLCA approach
Authors: Ajay Guru Dev C. , Senthil Kumar V. S. , Rajesh G. 
Published: December 2016

AbstractAgile manufacturing (AM) has been recognized as an international strategy for improving industrial competitiveness. Agility refers to the ability of an organization to adapt to changes within its environment and to utilize them for earning profit and constituting a major item of expense for any organization, having a palpable effect on its profitability. Manpower utilization is considered as one of the important attributes affecting the organization's ability to be agile. In other words, an effective manpower utilization in any agile environment can reduce the workload and enhance the profitability of any organization. The efficiency of any agile organization lies in improved production, through the utilization of a smaller workforce without impacting on its work‐life balance. Thus, this research is focused on ensuring minimum manpower utilization on the machine shop floor of an Original Equipment Manufacturing (OEM) industry by implementing the Paired‐cell Overlapping Loops of Card with Authorization (POLCA) approach. Effective manpower utilization is an important aspect requiring focus in all areas relating to manufacture. However, POLCA, despite being a powerful and multiapplicative tool for AM, has still not been used by researchers for effective manpower utilization. This article takes initiative in this area.