bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and photoluminescence of EuII in barium zinc orthosilicate: a novel green color emitting phosphor for white‐LEDs
Authors: Kasturi S. , Sivakumar V. , Varadaraju U. V. 
Published: July 2016

AbstractA series of Eu2+‐activated barium orthosilicates (BaZnSiO4) were synthesized using a high‐temperature solid‐state reaction. A photoluminescence excitation study of Eu2+ shows a broad absorption band in the range of 270–450 nm, with multiple absorption peak maxima (310, 350 and 400 nm) due to 4f–5d electronic transition. The emission spectra of all the compositions show green color emission (in the spectral region 450–550 nm with a peak maximum at 502 nm and a shoulder at ~ 490 nm) with appropriate Comission Internationale de l'Eclairage (CIE) color coordinates. The two emission peaks are due to the presence of Eu2+ in two different Ba sites in the BaZnSiO4 host lattice. The energy transfers between the Eu2+ ions in BaZnSiO4 host are elucidated from the critical concentration quenching data based on the electronic multipolar interaction. All Eu2+‐activated BaZnSiO4 phosphor materials can be efficiently excited in the ultraviolet (UV) to near UV‐region (270–420 nm), making them attractive candidate as a green phosphor for solid state lighting–white light‐emitting diodes.
Facile Synthesis of CoWO4 Nanosheet Arrays Grown on Nickel Foam Substrates for Asymmetric Supercapacitors
Authors: Chen Sanming , Yang Guang , Jia Yi , Zheng Huajun 
Published: July 2016

AbstractWell‐aligned CoWO4 nanosheet arrays grown on nickel foam substrates have been fabricated by using a facile hydrothermal process. The interconnected CoWO4 nanosheets with abundant open spaces are uniformly deposited on the skeleton of the nickel foam. When investigated as binder‐free electrodes for supercapacitors, the CoWO4 nanosheet arrays exhibit a specific capacitance of 1127.6 F g−1 at 1 A g−1 and remarkable cycle performance. Moreover, an asymmetric supercapacitor (ASC) is assembled by using CoWO4 nanosheets and activated carbon as the positive electrode and negative electrode, respectively. The ASC device delivers a maximum energy density of 48 Wh kg−1 at a power density of 365 W kg−1. The results demonstrate that CoWO4 nanosheet arrays could be potential electrode materials for energy‐storage systems.
Linquats: Synthesis, Characterization, and Properties of Linear Extended Diquats
Authors: Čížková Martina , Pospíšil Lubomír , Klepetářová Blanka , Koval Dušan , Teplý Filip 
Published: July 2016

AbstractWe report an innovative synthetic route to linear extended diquats (linquats). Our approach is short and efficient and features a highly modular reaction sequence based on two‐fold quaternization followed by the key intramolecular [2+2+2] alkyne cycloaddition. The physico‐chemical properties of four new linquats were characterized by spectroscopic methods, X‐ray crystallography, and electrochemistry complemented by information obtained from DFT calculations. Electron deficient N‐heteroaromatic cations with linear extended diquat motif with high electron affinities have been recently recognized as attractive n‐type semiconductors for chemical and biological sensing. Their advantageous redox properties such as very fast reversible electron transfers make the title compounds interesting for applications.
Recent Advances in the Synthesis of Heterocycles and Related Substances Based on α‐Imino Rhodium Carbene Complexes Derived from N‐Sulfonyl‐1,2,3‐triazoles
Authors: Jiang Yu , Sun Run , Tang Xiang‐Ying , Shi Min 
Published: July 2016

AbstractIn recent years, α‐imino rhodium carbene complexes derived by ring‐opening of N‐sulfonyl‐1,2,3‐triazoles have attracted much attention from organic chemists. Many transformations of these species have been reported that involve, in most cases, nucleophilic attack at the carbene center of the α‐imino rhodium carbene, facilitating the synthesis of a wide range of novel and useful compounds, particularly heterocycles. This Minireview mainly focuses on advances in the transformation of N‐sulfonyl‐1,2,3‐triazoles during the past two years.
Interpenetrated Cage Structures
Authors: Frank Marina , Johnstone Mark D. , Clever Guido H. 
Published: July 2016

AbstractThis Review covers design strategies, synthetic challenges, host–guest chemistry, and functional properties of interlocked supramolecular cages. Some dynamic covalent organic structures are discussed, as are selected examples of interpenetration in metal–organic frameworks, but the main focus is on discrete coordination architectures, that is, metal‐mediated dimers. Factors leading to interpenetration, such as geometry, flexibility and chemical makeup of the ligands, coordination environment, solvent effects, and selection of suitable counter anions and guest molecules, are discussed. In particular, banana‐shaped bis‐pyridyl ligands together with square‐planar metal cations have proven to be suitable building blocks for the construction of interpenetrated double‐cages obeying the formula [M4L8]. The peculiar topology of these double‐cages results in a linear arrangement of three mechanically coupled pockets. This allows for the implementation of interesting guest encapsulation effects such as allosteric binding and template‐controlled selectivity. In stimuli‐responsive systems, anionic triggers can toggle the binding of neutral guests or even induce complete structural conversions. The increasing structural and functional complexity in this class of self‐assembled hosts promises the construction of intelligent receptors, novel catalytic systems, and functional materials.
Effect of Molecular Interactions on Electron‐Transfer and Antioxidant Activity of Bis(alkanol)selenides: A Radiation Chemical Study
Authors: Kumar Pavitra V. , Singh Beena G. , Phadnis Prasad P. , Jain Vimal K. , Priyadarsini K. Indira 
Published: July 2016

AbstractUnderstanding electron‐transfer processes is crucial for developing organoselenium compounds as antioxidants and anti‐inflammatory agents. To find new redox‐active selenium antioxidants, we have investigated one‐electron‐transfer reactions between hydroxyl (.OH) radical and three bis(alkanol)selenides (SeROH) of varying alkyl chain length, using nanosecond pulse radiolysis. .OH radical reacts with SeROH to form radical adduct, which is converted primarily into a dimer radical cation (>Se∴Se<)+ and α‐{bis(hydroxyl alkyl)}‐selenomethine radical along with a minor quantity of an intramolecularly stabilized radical cation. Some of these radicals have been subsequently converted to their corresponding selenoxide, and formaldehyde. Estimated yield of these products showed alkyl chain length dependency and correlated well with their antioxidant ability. Quantum chemical calculations suggested that compounds that formed more stable (>Se∴Se<)+, produced higher selenoxide and lower formaldehyde. Comparing these results with those for sulfur analogues confirmed for the first time the distinctive role of selenium in making such compounds better antioxidants.
Weak Ligand‐Field Effect from Ancillary Ligands on Enhancing Single‐Ion Magnet Performance
Authors: Meng Yin‐Shan , Zhang Yi‐Quan , Wang Zhe‐Ming , Wang Bing‐Wu , Gao Song 
Published: July 2016

AbstractA series of bis‐pentamethylcyclopentadienyl‐supported Dy complexes containing different ancillary ligands were synthesized and characterized. Magnetic studies showed that 1 Dy [Cp*2DyCl(THF)], 1 Dy’ [Cp*2DyCl2K(THF)]n, 2 Dy [Cp*2DyBr(THF)], 3 Dy [Cp*2DyI(THF)] and 4 Dy [Cp*2DyTp] (Tp=hydrotris(1‐pyrazolyl)borate) were single‐ion magnets (SIMs). The 1D dysprosium chain 1 Dy’ exhibited a hysteresis at up to 5 K. Furthermore, 3 Dy featured the highest energy barrier (419 cm−1) among the complexes. The effects of ancillary ligands on single‐ion magnetic properties were studied by experimental, ab initio calculations and electrostatic analysis methods in detail. These results demonstrated that the QTM rate was strongly dependent on the ancillary ligands and that a weak equatorial ligand field could be beneficial for constructing Dy‐SIMs.
EnantioselectiveEthylation of Various Aldehydes Catalyzed by Readily Accessible Chiral Diols
Authors: Gök Yaşar , Kiliçarslan Seda , Gök Halil Zeki , Karayiğit İlker Ümit 
Published: July 2016

AbstractFour chiral C2‐symmetric diols were synthesized in a straightforward three‐step reaction and demonstrated excellent enantioselectivities and good overall yields. Their catalytic activities were examined via the addition of diethylzinc to various aldehydes. The enantioselective addition of diethylzinc to 2‐methoxybenzaldehyde gave the corresponding chiral secondary alcohol with high yields (up to 95%) and moderate to good enantiomeric excess (up to 88%). All synthesized ligands were evaluated in the addition of diethylzinc to various aldehydes in the presence of an additional metal such as Ti(IV) complexes. Chirality 28:593–598, 2016. © 2016 Wiley Periodicals, Inc.
From value congruence to employer brand: Impact on organizational identification and word of mouth
Authors: Charbonnier‐Voirin Audrey , Poujol Juliet F. , Vignolles Alexandra 
Published: July 2016

AbstractThe war for talent has led organizations to develop a strong employer brand to attract and retain skilled employees. Few studies have examined the antecedents and consequences of the internal employer brand. We focus on (i) the influence of employee‐organization values congruence on the employee's perception of the employer brand and (ii) the influence of the employer brand on organizational identification and positive word of mouth vis‐à‐vis the employer. Results from a survey of 308 employees show that the employer brand fully mediates the relationship between values congruence and organizational identification and positive word of mouth. These results give rise to theoretical and managerial implications in terms of employer branding. Copyright © 2016 ASAC. Published by John Wiley & Sons, Ltd.
Storage and disposal of medical cannabis among patients with cancer: Assessing the risk of diversion and unintentional digestion
Authors: Sznitman Sharon R. , Goldberg Victoria , Sheinman‐Yuffe Hedva , Flechter Ezequiel , Bar‐Sela Gil 
Published: July 2016

BACKGROUNDIncreasingly more jurisdictions worldwide are legalizing medical cannabis. Major concerns related to such policies are that improper storage and disposal arrangements may lead to the diversion and unintentional digestion of cannabis. These concerns are particularly acute among patients with cancer because they take home medical cannabis for extended periods and have high rates of treatment termination and mortality shortly after the onset of treatment with medical cannabis. Therefore, leftover cannabis is potentially particularly prevalent, and potentially improperly stored, in households of current and deceased patients with cancer. The current study investigated the risk of medical cannabis diversion and unintentional digestion among oncology patients treated with medical cannabis and caregivers of recently deceased patients who were treated with medical cannabis.METHODSA total of 123 oncology patients treated with medical cannabis and 37 caregivers of deceased oncology patients treated with medical cannabis were interviewed regarding practices and the information received concerning the safe storage and disposal of medical cannabis, as well as experiences of theft, diversion, and unintentional digestion.RESULTSHigh rates of suboptimal storage were reported and caregivers were found to be particularly unlikely to have received information regarding the safe storage and disposal of medical cannabis. Few incidences of theft, diversion, and unintentional digestion were reported.CONCLUSIONSOncologists and other health care providers have an important, yet unfilled, role to play with regard to educating patients and caregivers of the importance of the safe storage and disposal of medical cannabis. Interventions designed to alert patients treated with medical cannabis and their caregivers to the problem of diversion, along with strategies to limit it, have the potential to limit diversion and unintentional exposure to medical cannabis. Cancer 2016;122:3363–3370. © 2016 American Cancer Society.
Establishing quality indicators for neck dissection: Correlating the number of lymph nodes with oncologic outcomes (NRG Oncology RTOG 9501 and RTOG 0234)
Authors: Divi Vasu , Harris Jonathan , Harari Paul M. , Cooper Jay S. , McHugh Jonathan , Bell Diana , Sturgis Erich M. , Cmelak Anthony J. , Suntharalingam Mohan , Raben David , Kim Harold , Spencer Sharon A. , Laramore George E. , Trotti Andy , Foote Robert L. , Schultz Christopher , Thorstad Wade L. , Zhang Qiang (Ed) , Le Quynh Thu , Holsinger F. Christopher 
Published: July 2016

BACKGROUNDProspective quality metrics for neck dissection have not been established for patients with head and neck squamous cell carcinoma. The purpose of this study was to investigate the association between lymph node counts from neck dissection, local‐regional recurrence, and overall survival.METHODSThe number of lymph nodes counted from neck dissection in patients treated in 2 NRG Oncology trials (Radiation Therapy Oncology Group [RTOG] 9501 and RTOG 0234) was evaluated for its prognostic impact on overall survival with a multivariate Cox model adjusted for demographic, tumor, and lymph node data and stratified by the postoperative treatment group.RESULTSFive hundred seventy‐two patients were analyzed at a median follow‐up of 8 years. Ninety‐eight percent of the patients were pathologically N+. The median numbers of lymph nodes recorded on the left and right sides were 24 and 25, respectively. The identification of fewer than 18 nodes was associated with worse overall survival in comparison with 18 or more nodes (hazard ratio [HR], 1.38; 95% confidence interval [CI], 1.09‐1.74;P = .007). The difference appeared to be driven by local‐regional failure (HR, 1.46; 95% CI, 1.02‐2.08;P = .04) but not by distant metastases (HR, 1.08; 95% CI, 0.77‐1.53;P = .65). When the analysis was limited to NRG Oncology RTOG 0234 patients, adding the p16 status to the model did not affect the HR for dissected nodes, and the effect of nodes did not differ with the p16 status.CONCLUSIONSThe removal and identification of 18 or more lymph nodes was associated with improved overall survival and lower rates of local‐regional failure, and this should be further evaluated as a measure of quality in neck dissections for mucosal squamous cell carcinoma.Cancer2016;122:3464–71. ©2016 American Cancer Society.
Identification of novel candidate regulators of retinotectal map formation through transcriptional profiling of the chick optic tectum
Authors: Kukreja Shweta , Gautam Pratibha , Saxena Richa , Saxena Monika , Udaykumar Niveda , Kumar Aditi , Bhatt Ritesh , Kumar Vidur , Sen Jonaki 
Published: July 2016

ABSTRACTInformation from the retina is carried along the visual pathway with accuracy and spatial conservation as a result of topographically mapped axonal connections. The optic tectum in the midbrain is the primary region to which retinal ganglion cells project their axons in the chick. The two primary axes of the retina project independently onto the tectum using different sets of guidance cues to give rise to the retinotectal map. Specificity of the map is determined by attractive or repulsive interactions between molecular tags that are distributed in gradients in the retina and the tectum. Despite several studies, knowledge of the retinotectal guidance molecules is far from being complete. We screened for all molecules that are expressed differentially along the anterior‐posterior and medial‐lateral axes of the chick tectum using microarray based transcriptional profiling and identified several novel candidate retinotectal guidance molecules. Two such genes, encoding Wnt5a and Raldh2, the synthesizing enzymes for retinoic acid, were further analyzed for their function as putative regulators of retinotectal map formation. Wnt5a and retinoic acid were found to exhibit differential effects on the growth of axons from retinal explants derived from different quadrants of the retina. This screen also yielded a large number of genes expressed in a lamina‐specific manner in the tectum, which may have other roles in tectal development. J. Comp. Neurol. 525:459–477, 2017. © 2016 Wiley Periodicals, Inc.
Propagation of Reactions in Inhomogeneous Media
Authors: Zlatoš Andrej 
Published: July 2016

AbstractConsider reaction‐diffusion equation ut=Δ u + f(x,u) with and general inhomogeneous ignition reaction f ≥ 0 vanishing at u = 0,1. Typical solutions 0 ≤ u ≤ 1 transition from 0 to 1 as time progresses, and we study them in the region where this transition occurs. Under fairly general qualitative hypotheses on f we show that in dimensions d ≤ 3, the Hausdorff distance of the superlevel sets {u ≥ ε } and {u ≥ 1‐ε} remains uniformly bounded in time for each ε ∊ (0,1). Thus, u remains uniformly in time close to the characteristic function of in the sense of Hausdorff distance of superlevel sets. We also show that each {u ≥ ε} expands with average speed (over any long enough time interval) between the two spreading speeds corresponding to any x‐independent lower and upper bounds on f. On the other hand, these results turn out to be false in dimensions d ≥ 4, at least without further quantitative hypotheses on f. The proof for d ≤ 3 is based on showing that as the solution propagates, small values of u cannot escape far ahead of values close to 1. The proof for d ≥ 4 is via construction of a counterexample for which this fails. Such results were before known for d=1 but are new for general non‐periodic media in dimensions d ≥ 2 (some are also new for homogeneous and periodic media). They extend in a somewhat weaker sense to monostable, bistable, and mixed reaction types, as well as to transitions between general equilibria of the PDE and to solutions not necessarily satisfying . © 2016 Wiley Periodicals, Inc.
Strategies for replica consistency in data grid – a comprehensive survey
Authors: Vashisht Priyanka , Sharma Anju , Kumar Rajesh 
Published: July 2016

SummaryData grid provides an efficient solution for data‐oriented applications that need to manage and process large data sets located at geographically distributed storage resources. Data grid relies on data replicas to enhance the performance and to ensure the fault tolerant results to the users. Replicas are developed to increase the availability of data and to provide better data access. Replicas have their own advantages, but there are a number of issues that must be resolved. Among various existing issues, the critical concern is replica consistency. Various replica consistency strategies are available in the literature. These strategies rationalize and investigate various parameters like bandwidth consumption, access cost, scalability, execution time, storage consumption, staleness, and freshness of replicas. In this paper, several asynchronous replica consistencies are classified and analyzed based on various strategies such as topology, level of abstraction, update propagation, and locality. Some other strategies are also discussed and analyzed like adaptive consistency, quorum‐based consistency, load balancing, and agent‐based economically efficient, check‐pointing, fault tolerance, and conflict management. Parameters on which these strategies are analyzed are methodology, replication classification, consistency, grid topology, environment, evaluation parameters, and performance. Copyright © 2016 John Wiley & Sons, Ltd.
Optimization of Norbornadiene Compounds for Solar Thermal Storage by First‐Principles Calculations
Authors: Kuisma Mikael , Lundin Angelica , Moth‐Poulsen Kasper , Hyldgaard Per , Erhart Paul 
Published: July 2016

AbstractInvited for this Issue′s Cover are the groups of Moth‐Poulsen, Hyldgaard, and Erhart at Chalmers University of Technology. They investigated possible candidates for molecular solar thermal storage using quantum mechanical calculations and identified general guiding principles for the design of such compounds. The Full Paper itself is available at 10.1002/cssc.201600281.
Seeds, browse, and tooth wear: a sheep perspective
Authors: Ramdarshan Anusha , Blondel Cécile , Brunetière Noël , Francisco Arthur , Gautier Denis , Surault Jérôme , Merceron Gildas 
Published: July 2016

AbstractWhile grazing as a selective factor towards hypsodont dentition on mammals has gained a lot of attention, the importance of fruits and seeds as fallback resources for many browsing ungulates has caught much less attention. Controlled‐food experiments, by reducing the dietary range, allow for a direct quantification of the effect of each type of items separately on enamel abrasion. We present the results of a dental microwear texture analysis on 40 ewes clustered into four different controlled diets: clover alone, and then three diets composed of clover together with either barley, corn, or chestnuts. Among the seed‐eating groups, only the barley one shows higher complexity than the seed‐free group. Canonical discriminant analysis is successful at correctly classifying the majority of clover‐ and seed‐fed ewes. Although this study focuses on diets which all fall within a single dietary category (browse), the groups show variations in dental microwear textures in relation with the presence and the type of seeds. More than a matter of seed size and hardness, a high amount of kernels ingested per day is found to be correlated with high complexity on enamel molar facets. This highlights the high variability of the physical properties of the foods falling under the browsing umbrella.
Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters
Authors: Leinaas Hans Petter , Jalal Marwa , Gabrielsen Tove M. , Hessen Dag O. 
Published: July 2016

SummaryThe tendency of ectotherms to get larger in the cold (Bergmann clines) has potentially great implications for individual performance and food web dynamics. The mechanistic drivers of this trend are not well understood, however. One fundamental question is to which extent variation in body size is attributed to variation in cell size, which again is related to genome size. In this study, we analyzed body and genome size in four species of marine calanoid copepods, Calanus finmarchicus, C. glacialis, C. hyperboreus and Paraeuchaeta norvegica, with populations from both south Norwegian fjords and the High Arctic. The Calanus species showed typical interspecific Bergmann clines, and we assessed whether they also displayed similar intraspecific variations—and if correlation between genome size and body size differed between species. There were considerable inter‐ as well as intraspecific variations in body size and genome size, with the northernmost populations having the largest values of both variables within each species. Positive intraspecific relationships suggest a functional link between body and genome size, although its adaptiveness has not been settled. Impact of additional drivers like phylogeny or specific adaptations, however, was suggested by striking divergences in body size – genome size ratios among species. Thus, C. glacialis and C. hyperboreus, had fairly similar genome size despite very different body size, while P. norvegica, of similar body size as C. hyperboreus, had the largest genome sizes ever recorded from copepods. The inter‐ and intraspecific latitudinal body size clines suggest that climate change may have major impact on body size composition of keystone species in marine planktonic food webs.