bluuebunny/crossref_metadata_2025_split huggingface dataset:
13th Arctic Ungulate Conference, 22-26 August 2011, Yellowknife, Canada
Authors: Åhman (editor in chief) Birgitta , Wiklund (technical editor) Eva , Hegel (issue editor) Troy 
Published: June 2013

The 13th International Arctic Ungulate Conference was held in Yellowknife, Northwest Territories, Canada, from 22-26 August 2011. This biennial conference is the primary venue for meetings of the International Arctic Ungulate Society. Over 200 delegates attended the conference with representation from Canada, the United States, Norway, Sweden, Greenland, Finland, Russia, and Japan. The theme of the conference was “Challenges of Managing Northern Ungulates”. The goal of the conference organizers was to address the difficulties of managing ungulate populations that are faced with the unpredictable effects of climate change and an ever-increasing human presence on the land. The conference also focussed on the challenges associated with developing recovery actions for declining caribou and reindeer populations that are an integral part of Aboriginal cultures and ways of life.
High Temperature Crystallization of Free‐Standing Anatase TiO2 Nanotube Membranes for High Efficiency Dye‐Sensitized Solar Cells
Authors: Lin Jia , Guo Min , Yip Cho Tung , Lu Wei , Zhang Guoge , Liu Xiaolin , Zhou Limin , Chen Xianfeng , Huang Haitao 
Published: June 2013

AbstractDespite the one‐dimensional ordering of anodic TiO2 nanotube arrays (TNAs), the electron diffusion towards the substrate in TNA‐based dye‐sensitized solar cells (DSSCs) is comparably slow. The improvement of electron mobility by enhancing TNA crystallinity under high‐temperature annealing, however, is infeasible with the existence of Ti metal substrate. Herein, it is shown that, by high temperature (up to 700 °C) crystallization of high‐quality free‐standing TNA membranes, the TNAs can maintain their structure integrity and phase (anatase) stability as a result of the absence of the nucleation sites and the high quality of the membrane obtained by a self‐detachment method. The electron transport is much faster (≈4 times) in the 700 °C‐annealed TNA membranes than that in the 400 °C‐treated ones for 20 μm‐length nanotubes, which is mainly attributed to the improved crystallinity and reduced electron trap states. In spite of slightly reduced dye loading capacity (decreased by ≈30%) in the 700 °C‐annealed membranes, the superior electron transport leads to a significantly improved efficiency of 7.81% (enhanced by ≈50%). The strategy of manipulating the electron transport dynamics by high temperature treatment on high‐quality TNA membranes may open new route for further improvement in the performances of TNA‐based DSSCs.
Gain of employment and depressive symptoms among previously unemployed workers: A longitudinal cohort study in South Korea
Authors: Kim Seung‐Sup , Muntaner Carles , Kim Hyun , Jeon Christie Y. , Perry Melissa J. 
Published: June 2013

AbstractBackgroundThe goal of this study is to examine the association between gain of employment and depressive symptoms among previously unemployed workers in South Korea.MethodsUsing data from the on‐going Korean Welfare Panel Study, we determined four different employment statuses (i.e., unemployment, part‐time precarious, full‐time precarious, full‐time permanent employment) at follow up (2008 or 2010) among the unemployed at baseline (2007 or 2009) and examined their association with depressive symptoms after excluding the people with depressive symptoms at baseline (N = 308). Depressive symptoms were assessed annually using the 11‐item Center for Epidemiologic Studies Depression Scale.ResultsAfter adjusting for covariates including health‐related variables, unemployed individuals who gained full‐time permanent employment (RR: 0.38, 95% CI: 0.18, 0.83) and those who gained full‐time precarious employment (RR: 0.26, 95% CI: 0.11, 0.63) were less likely to have depressive symptoms compared to those with persistent unemployment. In a subpopulation analysis conducted after additionally excluding the people with depressive symptoms 1 year before baseline, only the association between gaining full‐time permanent employment and depressive symptoms was significant (RR: 0.27, 95% CI: 0.08, 0.86).ConclusionsOur findings highlight the benefits of full‐time permanent employment on worker's mental health. Am. J. Ind. Med. 56:1245–1250, 2013. © 2013 Wiley Periodicals, Inc.
Occupation held at the time of asthma symptom development
Authors: Knoeller Gretchen E. , Mazurek Jacek M. , Storey Eileen 
Published: June 2013

AbstractBackgroundExamining occupations other than those held when asthma symptoms first developed may not correctly identify occupations with higher risk of asthma onset.MethodsTo determine the occupation held when individuals first developed asthma symptoms, we examined 2010 National Health Interview Survey data for working adults with current asthma.ResultsOverall 37.1% of working adults with current asthma developed asthma while employed. Of these, the highest proportions of individuals identified office and administrative support (13.3%), sales and related (9.4%), and management (8.5%) as the occupation held when asthma first developed; 37.8% had a different current occupation than at asthma onset, and estimates of a change in occupation were highest for those who developed asthma while working in business and financial operations (49.3%), sales and related (48.6%), and healthcare support (43.8%) occupations.ConclusionFuture population‐based studies should further examine associations between asthma and occupation held at time of asthma onset. Am. J. Ind. Med. 56:1165–1173, 2013. © 2013 Wiley Periodicals, Inc.†
Projections of heavy rainfall over the central United States based on CMIP5 models
Authors: Villarini Gabriele , Scoccimarro Enrico , Gualdi Silvio 
Published: June 2013

AbstractThe central United States is a region for which observational studies have indicated an increase in heavy rainfall. This study uses projections of daily rainfall from 20 state‐of‐the‐art global climate models and one scenario [representative concentration pathway (RCP) 8.5] to examine projected changes in extreme rainfall. Analyses are performed focusing on trends in the 90th and 99th percentiles of the daily rainfall distributions for two periods (2006–2045 and 2046–2085). These results indicate a large increase in extreme rainfall mostly over the northern part of the region, with a much less clear signal over the Great Plains and states along the Gulf of Mexico.
President's page
Authors: Dillon Andrew 
Published: June 2013

AbstractEditor's SummaryFaced with declining membership numbers, much like other professional organizations, ASIS&T must address the challenge through immediate recruitment efforts and long‐term strategic planning. The number of information science students and the organization's global audience offer strong potential for expanding membership. Dillon urges taking a broad look at membership advantages, considering tangible benefits and especially the intangibles, such as professional identity, community, credentialing and legitimation. Partnering with other associations can promote the organization, and assuming the role as an umbrella organization for scholarly groups in the information sector could provide sustainability more effectively than reliance on membership dues.
Informatics and the future of nursing: Harnessing the power of standardized nursing terminology
Authors: Schwirian Patricia M. 
Published: June 2013

AbstractEditor's SummaryRolled into general health services, an invisible part of a hospital room rate, nursing is overdue for its own professional identity. One hallmark of a true profession is universal use of a specialized vocabulary by members. Standardized nursing terminologies provide a consistent basis for communicating the unique contributions of nursing to direct patient care and to research. Nursing has the dubious advantage of having seven recognized term sets serving numerous purposes but undermining the goal of consistency, key to widespread recognition and acceptance. Adoption of a single vocabulary appears doubtful, though two stand out for active support, currency and free availability. Widespread use of a standardized nursing terminology will come with time, consistent use, incorporation into nursing education and reference in professional health care and nursing journals. Cross mappings to important medical terminologies are necessary for interoperability and use in health and nursing informatics research.
Transforming our conversation of information architecture with structure
Authors: Davis Nathaniel 
Published: June 2013

AbstractEditor's SummarySince the origin of the concept, information architecture has been viewed as an art and a science, rooted in library science but borrowing from multiple disciplines. Though there are recognized elements, some say it lacks a foundation of consistent internal theory. The central concept of information architecture is structure. Though invisible and often taken for granted, effective structure is the quality that makes websites functional. It rests on navigation, information organization and information relationships and can extend to user experience and spatial representation. Information architecture reflects elements from a number of disciplines but, by aggregating them, is greater than the parts. Advancing information architecture from art to science depends on shared strategies and solutions for website structure.
Using a taxonomy for your database or website: A look behind the scenes
Authors: Hlava Marjorie M.K. 
Published: June 2013

AbstractEditor's SummaryPeering behind the screen of a database or website reveals the methods and benefits of incorporating a taxonomy. A digital taxonomy file contains terms, term records with details of relationships and a hierarchical structure. The terms are used to categorize content and apply as metanames describing website content items. Digging deeper, the taxonomy terms are stored and associated with a relational database management system, object‐oriented database or XML‐based database system. Taxonomy terms can be presented to the end user in a browsable format along with term record details for additional guidance. Captured in the inverted index of search software, the terms promote findability and search success. Documents with taxonomy terms attached can be accurately retrieved regardless of where they are held, and terms can be repurposed as site labels and points of association between internal content items.
Ahp Cyclodepsipeptides: The Impact of the Ahp Residue on the “Canonical Inhibition” of S1 Serine Proteases
Authors: Stolze Sara C. , Meltzer Michael , Ehrmann Michael , Kaiser Markus 
Published: June 2013

AbstractS1 serine proteases are by far the largest and most diverse family of proteases encoded in the human genome. Although recent decades have seen an enormous increase in our knowledge, the biological functions of most of these proteases remain to be elucidated. Chemical inhibitors have proven to be versatile tools for studying the functions of proteases, but this approach is hampered by the limited availability of inhibitor scaffold structures with the potential to allow rapid discovery of selective, noncovalent small‐molecule protease inhibitors. The natural product class of Ahp cyclodepsipeptides is an unusual class of small‐molecule canonical inhibitors; the incorporation of protease cleavage sequences into their molecular scaffolds enables the design of specific small‐molecule inhibitors that simultaneously target the S and S′ subsites of the protease through noncovalent mechanisms. Their synthesis is tedious, however, so in this study we have investigated the relevance of the Ahp moiety for achieving potent inhibition. We found that although the Ahp residue plays an important role in inhibition potency, appropriate replacement with β‐hydroxy amino acids results in structurally less complex derivatives that inhibit serine proteases in the low micromolar range.
Salimyxins and Enhygrolides: Antibiotic, Sponge‐Related Metabolites from the Obligate Marine Myxobacterium Enhygromyxa salina
Authors: Felder Stephan , Kehraus Stefan , Neu Edith , Bierbaum Gabriele , Schäberle Till F. , König Gabriele M. 
Published: June 2013

AbstractUnlike their terrestrial counterparts, marine myxobacteria are hardly investigated for their secondary metabolites. This study describes three new compounds (1–3), named salimyxins and enhygrolides, obtained from the obligate marine myxobacterium Enhygromyxa salina. These are the first natural products obtained from Enhygromyxa species. Their structures were elucidated by spectroscopic analysis, including NMR and CD spectroscopy. Enhygrolides are closely related to the nostoclides, which were initially isolated from a cyanobacterium of the genus Nostoc. The salimyxins, representing structurally most unusual degraded sterols, are close to identical to demethylincisterol from the sponge Homaxinella sp. Salimyxin B and enhygrolide A inhibit the growth of the Gram‐positive bacterium Arthrobacter cristallopoietes (MIC salimyxin B, 8 μg mL−1; enhygrolide A, 4 μg mL−1).
Heterogeneous Silica‐Supported Ruthenium Phosphine Catalysts for Selective Formic Acid Decomposition
Authors: Gan Weijia , Dyson Paul J. , Laurenczy Gábor 
Published: June 2013

AbstractThe water‐soluble ruthenium(II)–mTPPTS complex (mTPPTS=meta‐trisulfonated triphenylphosphine) efficiently catalyzes the generation of hydrogen from formic acid in aqueous solution. This catalyst has been immobilized in a hydrophilic silica support to facilitate mobile portable applications. It was used in diluted formic acid solutions, in which the recycling of a liquid phase catalyst is problematic. A series of heterogenized catalysts have been prepared by the reaction of the ruthenium(II)–mTPPTS dimer and silica functionalized with diphenylphosphine groups via alkyl chains. The length of the alkylene chain separating the silica from the diphenylphosphine group has been varied in these catalysts—all of them catalyzing the decomposition of formic acid. The catalysts were easily separated from the solution and reused. The optimized catalytic system based on MCM41‐Si‐(CH2)2PPh2/Ru‐mTPPTS demonstrated an activity and stability comparable to those of the homogeneous catalyst: a turnover frequency of 2780 h−1 was obtained at 110 °C, and no ruthenium leaching was detected after turnover numbers of 71 000.
Preparation of Unconventional Dendrimers that Contain Rigid NHTriazine Linkages and Peripheral tert‐Butyl Moieties for CO2‐Selective Adsorption
Authors: Lee Cheng‐Hua , Tsai Meng‐Rong , Chang Yen‐Tzu , Lai Long‐Li , Lu Kuang‐Lieh , Cheng Kung‐Lung 
Published: June 2013

AbstractThree unconventional dendrimers that contained rigid NHtriazine linkages and peripheral tert‐butyl moieties were prepared by using a convergent approach and characterized by 1H and 13C NMR spectroscopy, mass spectrometry, and elemental analysis. Based on a thermogravimetric analysis study, these dendrimers were observed to display thermal stability at about 300 °C. The NHtriazine moiety, which possessed protonated and proton‐free nitrogen sites (like the imidazole unit), displayed the capture of polarizable CO2 molecules through hydrogen‐bond and/or dipole–quadrupole interactions. In addition, the adsorption of various amounts of CO2 and N2 at different pressures suggests that the dendritic pores, which arise from the stacking of the middle co‐planar and rim protuberant dendrimers, Gn‐N∼N‐Gn (n=1–3), either swell or shrink at high pressure, thus indicating that these dendrimers may have a breathing ability.
Homogeneous Catalytic Hydrogenation of Amides to Amines
Authors: Coetzee Jacorien , Dodds Deborah L. , Klankermayer Jürgen , Brosinski Sandra , Leitner Walter , Slawin Alexandra M. Z. , Cole‐Hamilton David J. 
Published: June 2013

AbstractHydrogenation of amides in the presence of [Ru(acac)3] (acacH=2,4‐pentanedione), triphos [1,1,1‐tris‐ (diphenylphosphinomethyl)ethane] and methanesulfonic acid (MSA) produces secondary and tertiary amines with selectivities as high as 93 % provided that there is at least one aromatic ring on N. The system is also active for the synthesis of primary amines. In an attempt to probe the role of MSA and the mechanism of the reaction, a range of methanesulfonato complexes has been prepared from [Ru(acac)3], triphos and MSA, or from reactions of [RuX(OAc)(triphos)] (X=H or OAc) or [RuH2(CO)(triphos)] with MSA. Crystallographically characterised complexes include: [Ru(OAc‐κ1O)2(H2O)(triphos)], [Ru(OAc‐κ2O,O′)(CH3SO3‐κ1O)(triphos)], [Ru(CH3SO3‐κ1O)2(H2O)(triphos)] and [Ru2(μ‐CH3SO3)3(triphos)2][CH3SO3], whereas other complexes, such as [Ru(OAc‐κ1O)(OAc‐κ2O,O′)(triphos)], [Ru(CH3SO3‐κ1O)(CH3SO3‐κ2O,O′)(triphos)], H[Ru(CH3SO3‐κ1O)3(triphos)], [RuH(CH3SO3‐κ1O)(CO)(triphos)] and [RuH(CH3SO3‐κ2O,O′)(triphos)] have been characterised spectroscopically. The interactions between these various complexes and their relevance to the catalytic reactions are discussed.
Assembly of Cerium(III)‐Stabilized Polyoxotungstate Nanoclusters with SeO32−/TeO32− Templates: From Single Polyoxoanions to Inorganic Hollow Spheres in Dilute Solution
Authors: Chen Wei‐Chao , Li Hao‐Long , Wang Xin‐Long , Shao Kui‐Zhan , Su Zhong‐Min , Wang En‐Bo 
Published: June 2013

AbstractA versatile one‐pot strategy was employed to synthesize three cerium(III)‐stabilized polyoxotungstates nanoclusters by combining cerium linkers and SeO32−/TeO32− heteroanion templates: K32Na16[{(XO3)W10O34}8{Ce8(H2O)20}(WO2)4‐ (W4O12)]⋅n H2O [X=Se, n=81 (1); X=Te, n=114 (2)] and K12Na22[{(SeO3)W10O34}8{Ce8(H2O)20}(WO2)4‐ {(W4O6)Ce4(H2O)14(SeO3)4(NO3)2}]⋅ 79 H2O (3), which are the first lanthanide‐containing polyoxotungstates with selenium or tellurium heteroatoms. The three clusters were characterized by single‐crystal X‐ray structure analysis, IR spectroscopy, thermogravimetric/differential thermal analysis, UV/Vis spectroscopy, ESI‐MS, and X‐ray photoelectron spectroscopy. Their electrochemical, photoluminescence, and magnetic properties were investigated. Their behavior in solution was studied by transmission electron microscopy, which showed that their single polyoxoanions assemble into intact, uniform‐sized, purely inorganic hollow spheres in dilute water/acetone solution.
Fluorescent Gold Nanoparticles: Synthesis of Composite Materials of Two‐Component Disulfide Gels and Gold Nanoparticles
Authors: Yamamoto Koji , An Zengjian , Saito Nozomi , Yamaguchi Masahiko 
Published: June 2013

AbstractPseudoenantiomeric ethynylhelicene oligomers containing a disulfide group formed two‐component gels, which showed different solvent properties from gels without the disulfide group. The disulfide gels reacted with gold nanoparticles, and the resulting organic–inorganic composite materials exhibited fluorescence emission between 600–800 nm, along with emission from the oligomers at 450 nm. The disulfide gels and isolated gold nanoparticles loaded with the oligomers did not show the former emission. The 600–800 nm emission reversibly disappeared upon sol formation with heating, which was accompanied by an enhancement of the emission at 450 nm. The novel emission was also observed in the solid state.
Energetic N‐Trinitroethyl‐Substituted Mono‐, Di‐, and Triaminotetrazoles
Authors: Zhang Qinghua , Zhang Jiaheng , Parrish Damon A. , Shreeve Jean'ne M. 
Published: June 2013

AbstractA series of dense energetic N‐trinitroethyl‐substituted mono‐, bis‐, and tri‐5‐aminotetrazoles were obtained by reacting primary amines with in situ generated cyanogen azide, followed by the trinitroethyl functionalization that involves a condensation of a hydroxymethyl intermediate (prepared by a reaction with formaldehyde) with trinitromethane. These compounds were fully characterized by using multinuclear NMR spectroscopy, IR, elemental analysis, differential scanning calorimetry (DSC), and, in one case with 9, with single‐crystal XRD analysis. The heats of formation for all compounds were calculated with Gaussian 03 and then combined with experimental densities to determine the detonation pressures (P) and velocities (Dv) of the energetic materials. Interestingly, most of them exhibited high density, good thermal stability, acceptable oxygen balance, positive heat of formation, low impact sensitivity, and excellent detonation properties, which highlighted their practical application potentials as a fascinating class of highly energetic materials.
ChemInform Abstract: New Salt‐Inclusion Borate, Li3Ca9(BO3)7·2[LiF]: A Promising UV NLO Material with the Coplanar and High Density BO3 Triangles.
Authors: Yu Hongwei , Wu Hongping , Pan Shilie , Wang Ying , Yang Zhihua , Su Xin 
Published: June 2013

AbstractSingle crystals of the title compound are prepared by melting a mixture of Li2CO3, LiF, CaO, and H3BO3 in a molar ratio of 1.5:22:9:7 (Pt crucible, 850 °C, 20 h).
ChemInform Abstract: Preparation, Structure, and Electrochemistry of Layered Polyanionic Hydroxysulfates: LiMSO4OH (M: Fe, Co, Mn) Electrodes for Li‐Ion Batteries.
Authors: Subban Chinmayee V. , Ati Mohamed , Rousse Gwenaelle , Abakumov Artem M. , Van Tendeloo Gustaaf , Janot Raphael , Tarascon Jean‐Marie 
Published: June 2013

AbstractThe title compounds are prepared by ball milling of mixtures of LiOH and anhydrous MSO4 (M: Fe, Co, Mn) precursors.
ChemInform Abstract: New Alkali‐Metal Gallium Selenites, AGa(SeO3)2 (A: Li, Na, K, and Cs): Effect of Cation Size on the Framework Structures and Macroscopic Centricities.
Authors: Lee Dong Woo , Ok Kang Min 
Published: June 2013

AbstractThe structures of (IVa) (tetragonal, space group I$\bar 4$2d, Z = 8), (IVb,c) (orthorhombic, Pnma, Z = 4) and (IVb) (monoclinic, C2/m, Z = 8) are determined by single‐crystal XRD.
ChemInform Abstract: High Structural Complexity of Potassium Uranyl Borates Derived from High‐Temperature/High‐Pressure Reactions.
Authors: Albrecht‐Schmitt Thomas E. , et al. et al. 
Published: June 2013

AbstractK12 [(UO2)19(UO4) (B2O5)2(BO3)6 (BO2OH)O10]·nH2O (I), K4 [(UO2)5(BO3)2O4] ·H2O (II), and K15 [(UO2)18(BO3)7O15] (III) are synthesized by high‐pressure solid state reaction of KNO3, H3BO3, SiO2, Al2O3, and UO2(NO3)2·6H2O in molar ratios of K:B:Si:Al:U = 2:6:5:5:1 and KOH solution for (I) and K:B:Si:U = 2:6:5:1 without Al2O3 and KOH addition for compounds (II) and (III) (Au capsule, 650 °C, 200 MPa, 7 d).
ChemInform Abstract: A Microbial‐Mineralization Approach for Syntheses of Iron Oxides with a High Specific Surface Area.
Authors: Yagita Naoki , Oaki Yuya , Imai Hiroaki 
Published: June 2013

Abstractγ‐Fe2O3 and α‐Fe2O3 with BET surface areas of 253 and 148 m2/g, resp., are synthesized by thermal treatment of γ‐FeOOH or α‐FeOOH precursors at 400 °C for 2—3 min.
ChemInform Abstract: Iodine‐Templated Assembly of Unprecedented 3d—4f Metal—Organic Frameworks as Photocatalysts for Hydrogen Generation.
Authors: Hu Xiao‐Li , Sun Chun‐Yi , Qin Chao , Wang Xin‐Long , Wang Hai‐Ning , Zhou En‐Long , Li Wen‐E , Su Zhong‐Min 
Published: June 2013

AbstractThe isotypic compounds (III) crystallize in the monoclinic space group P21/c with Z = 2 (single crystal XRD) and exhibit three‐dimensional frameworks with triangular helical channels, which accomodate linear polyiodide chains.
ChemInform Abstract: Efficient Palladium‐Catalyzed C—O Hydrogenolysis of Benzylic Alcohols and Aromatic Ketones with Polymethylhydrosiloxane.
Authors: Wang Hu , Li Li , Bai Xing‐Feng , Shang Jun‐Yan , Yang Ke‐Fang , Xu Li‐Wen 
Published: June 2013

AbstractA simple and new method for the title reaction is developed.
ChemInform Abstract: Tandem Reactions Involving 1‐Silyl‐3‐boryl‐2‐alkenes. New Access to (Z)‐1‐Fluoro‐1‐alkenes, Allyl Fluorides, and Diversely α‐Substituted Allylboronates.
Authors: Mace Aurelie , Tripoteau Fabien , Zhao Qian , Gayon Eric , Vrancken Emmanuel , Campagne Jean‐Marc , Carboni Bertrand 
Published: June 2013

AbstractThe reactions occur with high (Z)‐selectivity regardless of the starting material′s configuration.