bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improving the Electrochemical Performance of Ni‐Rich LiNi0.8Co0.1Mn0.1O2 by Enlarging the Li Layer Spacing
Authors: Wu Kang , Jia Guofeng , Shangguan Xuehui , Yang Guowei , Zhu Zenghu , Peng Zhengjun , Zhuge Qin , Li Faqiang , Cui Xiaoling , Liu Suqin 
Published: January 2018

AbstractNi‐rich cathode materials have high capacities but exhibit serious capacity attenuation. Therefore, a strategy for modifying a LiNi0.8Co0.1Mn0.1O2 cathode material by Na doping of the Li+ sites is proposed to improve its electrochemical performance. In this work, Li1−xNaxNi0.8Co0.1Mn0.1O2 (x=0, 0.01, 0.03) materials are synthesized by a co‐precipitation and solid‐state sintering method, and their structures and electrochemical properties are analyzed. X‐ray diffraction (XRD) results suggest that all the prepared materials have a typical hexagonal layered structure with no impurities. The spacing of the Li layers increases from 2.59251 Å to 2.59805 Å, which shows that a small amount of larger Na ions (0.102 nm) occupy the Li sites (0.076 nm). Additionally, electrochemical measurements show that the high‐rate performance and cycling stability are significantly improved when some of the Li+ sites in LiNi0.8Co0.1Mn0.1O2 are occupied by Na+. Specifically, the capacity retention of Li0.99Na0.01Ni0.8Co0.1Mn0.1O2 is 91 % after 100 cycles at a rate of 10 C. Meanwhile, the mechanism about electrochemical performance was improved by doping Na+ into Li+ sites of LiNi0.8Co0.1Mn0.1O2 has been further discussed.
Temporal trends in a biomagnifying contaminant: Application of amino acid compound–specific stable nitrogen isotope analysis to the interpretation of bird mercury levels
Authors: Hebert Craig E. , Popp Brian N. 
Published: January 2018

Abstract

Temporal trends in levels of biomagnifying contaminants, such as mercury (Hg), in top predators can provide insights into changes in contaminant bioavailability through time. However, interpreting contaminant temporal trends in predators can be confounded by temporal changes in their diets, which, in turn, could affect organism trophic position and exposure to biomagnifying contaminants. To address this issue, bulk stable nitrogen isotope analysis, that is, analysis of whole tissue, is widely incorporated into contaminant-monitoring programs for the estimation of organism trophic position. In the present study, we investigated lake-specific temporal trends in Hg levels in herring gull (Larus argentatus smithsonianus) eggs from Lakes Huron and Erie, 2 Laurentian Great Lakes. Levels of Hg in Lake Huron eggs declined, whereas Lake Erie eggs showed no change. Stable nitrogen isotope analysis of bulk material could not explain these interlake differences in Hg temporal trends. However, application of amino acid compound–specific stable nitrogen isotope analysis, in conjunction with other dietary tracers (i.e., fatty acids), provided insights into the factors regulating interlake differences in Hg temporal trends. Adjusting Hg levels in predators to account for temporal changes in their diets can have a significant impact on the interpretation of temporal trend contaminants data. In this case, it reconciled the apparently different Hg temporal trends observed in gull eggs from Lakes Huron and Erie. Environ Toxicol Chem 2018;37:1458–1465. © 2018 SETAC
Abstract
Adjusting for changes in bird trophic position can alter the interpretation of temporal trends in egg mercury levels.
Protectiveness of Cu water quality criteria against impairment of behavior and chemo/mechanosensory responses: An update
Authors: Meyer Joseph S. , DeForest David K. 
Published: January 2018

Abstract

A meta-analysis was conducted of studies that reported behavior and chemo/mechanosensory responses by fish, amphibians, and aquatic invertebrates in Cu-containing waters and also reported sufficient water chemistry for calculation of hardness-based and biotic ligand model (BLM)–based water quality criteria (WQC) for Cu. The calculated WQC concentrations were then compared with the corresponding 20% impairment concentrations (IC20) of Cu for those behavior and chemo/mechanosensory responses. The hardness-based acute and chronic WQC for Cu would not have been protective (i.e., the IC20 would have been lower than the WQC) in 33.6 and 26.2%, respectively, of the 107 combined behavior- and chemo/mechanosensory-response cases that also had adequate water chemistry data for BLM-based WQC calculations (32.7% inconclusive). In comparison, the BLM-based acute and chronic WQC for Cu would not have been protective in only 10.3 and 4.7%, respectively, of the same 107 cases (29.9% inconclusive). To improve evaluations of regulatory effectiveness, researchers conducting aquatic Cu toxicity tests should measure and report complete BLM-input water chemistry and bracket the hardness-based and BLM-based WQC concentrations for Cu that would be applicable in their exposure waters. This meta-analysis demonstrates that, overall, the BLM-based WQC for Cu were considerably more protective than the hardness-based WQC for Cu against impairment of behavior and chemo/mechanosensory responses. Environ Toxicol Chem 2018;37:1260–1279. © 2018 SETAC
Multiple Ediacaran tectono‐metamorphic events in the Adamawa‐Yadé Domain of the Central Africa Fold Belt: Insight from the zircon U–Pb LAM‐ICP‐MS geochronology of the metadiorite of Meiganga (Central Cameroon)
Authors: Ganwa Alembert Alexandre , Klötzli Urs Stephan , Diguim Kepnamou Amadou , Hauzenberger Christoph 
Published: January 2018

One of the many orogeny cycles in Central Africa is the Pan‐African orogeny which took place during the Neoproterozoic era. In central Cameroon, the reworked materials are Archean to Palaeoproterozoic rocks of sedimentary and magmatic origin and subsequent granitoids. The metadiorite of Meiganga is a syntectonic magmatic rock, affected by three deformational phases. It is characterized by a schistosity highlighted by a banded structure related to migmatization and made up of green hornblende, biotite, plagioclase, quartz, chlorite, opaques minerals, apatite, zircon, and titanite. Zircon grains of the metadiorite are prismatic or roundish. Internally, they show oscillatory zonation, blurred oscillatory zonation, and sector zoning. Some grains portray an outer cathodoluminescence bright band with blurred oscillatory zonation and which transgress the inner oscillatory domain; zircons contain inclusions or are inclusion free. Laser‐ablation microprobe‐inductively coupled plasma‐mass spectrometry U–Pb data allow in relation with the internal structure of the zircon to decipher many tectono‐metamorphic steps in the Ediacaran phase of the Pan‐African Orogeny: (a) syntectonic emplacement of the dioritic protolith at 637 ± 5 Ma; (b) syn‐D2 melting process at 623 ± 2 Ma; (c) D3 time interval between 608 ± 2 and 562 ± 6 Ma; and (d) maximum age of the dextral movement of the regional shear zone at 570 ± 8 Ma. Ages founded in the studied metadiorite sample are recorded individually in different area of the Adamawa‐Yadé area of the Central African Fold Belt and the Borborema Province of NE Brazil, showing that the two domains underwent the same tectono‐metamorphic history during the Ediacaran period.
Repeat market entries in the internationalization process: The impact of investment motives and corporate capabilities
Authors: Jiang Guoliang Frank , Holburn Guy L. F. , Beamish Paul W. 
Published: January 2018

Research Summary: This study examines strategic and resource contingencies that shape MNEs’ country location choices. Our analysis of overseas production investments by Japanese firms (1971–2006) finds that differences in investment motives (i.e., horizontal and vertical investment) and corporate capabilities (i.e., marketing and production capabilities) moderate how prior entries into a host country affect subsequent entry decisions. In general, the positive impact of prior entries on investment in a country is weaker for horizontal investments and stronger for vertical investments. A more nuanced relationship emerges when entry decisions are analyzed in conjunction with heterogeneous corporate marketing and production capabilities. The study illustrates the novel insights to be gained from analyzing the joint impact of path dependence, managerial intentions, and corporate capabilities on country location decisions.
Managerial Summary: Multinational firms often make multiple investments over time in a concentrated set of countries, accumulating superior knowledge and capabilities in these environments. Researchers have nonetheless uncovered factors that can lead firms to deviate from strategic trajectories defined by their prior investments. In a statistical analysis of country entry decisions by Japanese manufacturing firms over a 35‐year period, we found that firms’ tendencies to reinvest in the same host countries were smaller for horizontal (i.e., market‐seeking) investments but greater for vertical (i.e., efficiency‐seeking) investments. We also found that organizational capabilities influence the geographic trajectory of international expansion: firms with stronger marketing and production capabilities were less likely to be influenced by the locations of prior entries and were more likely to invest in new countries.
The relationship between thalamic GABA content and resting cortical rhythm in neuropathic pain
Authors: Di Pietro Flavia , Macey Paul M. , Rae Caroline D. , Alshelh Zeynab , Macefield Vaughan G. , Vickers E. Russell , Henderson Luke A. 
Published: January 2018

AbstractRecurrent thalamocortical connections are integral to the generation of brain rhythms and it is thought that the inhibitory action of the thalamic reticular nucleus is critical in setting these rhythms. Our work and others' has suggested that chronic pain that develops following nerve injury, that is, neuropathic pain, results from altered thalamocortical rhythm, although whether this dysrhythmia is associated with thalamic inhibitory function remains unknown. In this investigation, we used electroencephalography and magnetic resonance spectroscopy to investigate cortical power and thalamic GABAergic concentration in 20 patients with neuropathic pain and 20 pain‐free controls. First, we found thalamocortical dysrhythmia in chronic orofacial neuropathic pain; patients displayed greater power than controls over the 4–25 Hz frequency range, most marked in the theta and low alpha bands. Furthermore, sensorimotor cortex displayed a strong positive correlation between cortical power and pain intensity. Interestingly, we found no difference in thalamic GABA concentration between pain subjects and control subjects. However, we demonstrated significant linear relationships between thalamic GABA concentration and enhanced cortical power in pain subjects but not controls. Whilst the difference in relationship between thalamic GABA concentration and resting brain rhythm between chronic pain and control subjects does not prove a cause and effect link, it is consistent with a role for thalamic inhibitory neurotransmitter release, possibly from the thalamic reticular nucleus, in altered brain rhythms in individuals with chronic neuropathic pain.
Spatiotemporal, metabolic, and therapeutic characterization of altered functional connectivity in major depressive disorder
Authors: Sheng Jintao , Shen Yuedi , Qin Yanhua , Zhang Lei , Jiang Binjia , Li Yaoyao , Xu Luoyi , Chen Wei , Wang Jinhui 
Published: January 2018

AbstractAlthough imbalanced functional integration has been increasingly reported in major depressive disorder (MDD), there still lacks a general framework to characterize common characteristic and origin shared by the integrative disturbances. Here we examined spatial selectivity, temporal uniqueness, metabolic basis, and therapeutic response of altered functional connectivity (FC) in MDD by analyzing both cross‐sectional and longitudinal multimodal functional magnetic resonance imaging data from 35 patients and 34 demographically matched healthy controls. First, based on a voxel‐wise, data‐driven, graph‐based degree centrality approach, the bilateral anterior cingulate gyri, middle frontal gyri and superior frontal gyri, and the right parahippocampal gyrus were robustly identified to show decreased FC in MDD. Further spatiotemporal analyses revealed that these regions exhibited hub‐like features and were selectively located in limbic and default mode networks spatially and, relative to other areas in the brain, exhibited unique, frequency‐dependent oscillation power (stronger within 0.01–0.027 Hz and weaker within 0.027–0.073 Hz) and less dynamical variability of whole‐brain FC profiles temporally. Moreover, a cross‐modality fusion analysis showed that all MDD‐related FC impairments were associated with reduced cerebral blood flow (CBF); however, there existed multiple regions that showed reduced CBF but had intact FC in the patients, which resulted in a decreased FC‐CBF coupling and implied an earlier emergence of reduced CBF than impaired FC in MDD. Finally, the disrupted FC in MDD gradually recovered over the course of drug treatment (2 and 12 weeks). Altogether, these findings could help establish a general framework to provide mechanistic insights into integrative dysfunctions in MDD.
Effects of health insurance coverage on risky behaviors
Authors: Lee Jungtaek 
Published: January 2018

AbstractPrior to implementation of the Patient Protection and Affordable Care Act, dependent health insurance coverage was typically available only for young adults under the age of 19. As of September 2010, the Affordable Care Act extended dependent health insurance coverage to include young adults up to the age of 26. I use the National Health Interview Survey for the sample period from 2011 to 2013 to analyze the causal relationship between the expansion of dependent coverage and risky behaviors including smoking and drinking as well as preventive care. I employ a regression discontinuity design to estimate the causal effect of health insurance coverage and overcome the endogeneity problem between insurance status and risky behaviors. When young adults become 26 years old, they are 7 to 10 percentage points more likely to lose health insurance than young adults under the age of 26. Although young adults over the age of 26 are generally aged out of insurance coverage, presence or absence of health insurance does not affect their smoking and drinking behaviors and their access to preventive care.
Consensus statements on the clinical understanding and use of milnacipran in Hong Kong
Authors: Lee Wing King , Au Yeung Kwok Leung , Lam Ho Bun , Wong Chi Keung , Au Ming Kai , Chan Hoi Yee Karina , Cheung Yat Wo Eric , Chui Wing Ho , Wong Ting Chi Vanessa , Fu Chi Kin , Sham Shiu Kow , Mak Ki Yan 
Published: January 2018

AbstractObjectiveOur aim is to develop a local consensus to guide medical practitioners and psychiatrists on the use of milnacipran in different psychiatric conditions.MethodsBy utilizing the modified Delphi technique, 12 statements were electronically voted on anonymously for their practicability of recommendation.ResultsThere was a very high degree of agreement among the consensus group on 10 finalized consensus statements, but 2 statements were voted down due to a poor degree of agreement.ConclusionsThe present consensus statements were developed as general recommendations for medical practitioners and psychiatrists to be practically referred to in clinical settings.
TRAF3 regulation of inhibitory signaling pathways in B and T lymphocytes by kinase and phosphatase localization
Authors: Wallis Alicia M , Bishop Gail A 
Published: January 2018

Abstract
This brief review presents current understanding of how the signaling adapter protein TRAF3 can both induce and block inhibitory signaling pathways in B and T lymphocytes, via association with kinases and phosphatases, and subsequent regulation of their localization within the cell. In B lymphocytes, signaling through the interleukin 6 receptor (IL-6R) induces association of TRAF3 with IL-6R-associated JAK1, to which TRAF3 recruits the phosphatase PTPN22 (protein tyrosine phosphatase number 22) to dephosphorylate JAK1 and STAT3, inhibiting IL-6R signaling. An important biological consequence of this inhibition is restraining the size of the plasma cell compartment, as their differentiation is IL-6 dependent. Similarly, in T lymphocytes, interleukin 2 receptor (IL-2R) signaling recruits TRAF3, which in turn recruits the phosphatase TCPTP (T cell protein tyrosine phosphatase) to dephosphorylate JAK3. The resulting inhibition of IL-2R signaling limits the IL-2-dependent size of the T regulatory cell (Treg) compartment. TRAF3 also inhibits type 1 IFN receptor (IFNαR) signaling to T cells by this mechanism, restraining expression of IFN-stimulated gene expression. In contrast, TRAF3 association with two inhibitors of TCR signaling, C-terminal Src kinase (Csk) and PTPN22, promotes their localization to the cytoplasm, away from the membrane TCR complex. TRAF3 thus enhances TCR signaling and downstream T cell activation. Implications are discussed for these regulatory roles of TRAF3 in lymphocytes, as well as potential future directions.
All over the map: An interobserver agreement study of tumor location based on the PI‐RADSv2 sector map
Authors: Greer Matthew D. , Shih Joanna H. , Barrett Tristan , Bednarova Sandra , Kabakus Ismail , Law Yan Mee , Shebel Haytham , Merino Maria J. , Wood Bradford J. , Pinto Peter A. , Choyke Peter L. , Turkbey Baris 
Published: January 2018

BackgroundProstate imaging reporting and data system version 2 (PI‐RADSv2) recommends a sector map for reporting findings of prostate cancer mulitparametric MRI (mpMRI). Anecdotally, radiologists may demonstrate inconsistent reproducibility with this map.PurposeTo evaluate interobserver agreement in defining prostate tumor location on mpMRI using the PI‐RADSv2 sector map.Study TypeRetrospective.PopulationThirty consecutive patients who underwent mpMRI between October, 2013 and March, 2015 and who subsequently underwent prostatectomy with whole‐mount processing.Field Strength3T mpMRI with T2W, diffusion‐weighted imaging (DWI) (apparent diffusion coefficient [ADC] and b‐2000), dynamic contrast‐enhanced (DCE).AssessmentSix radiologists (two high, two intermediate, and two low experience) from six institutions participated. Readers were blinded to lesion location and detected up to four lesions as per PI‐RADSv2 guidelines. Readers marked the long‐axis of lesions, saved screen‐shots of each lesion, and then marked the lesion location on the PI‐RADSv2 sector map. Whole‐mount prostatectomy specimens registered to the MRI served as ground truth. Index lesions were defined as the highest grade lesion or largest lesion if grades were equivalent.Statistical TestAgreement was calculated for the exact, overlap, and proportion of agreement.ResultsReaders detected an average of 1.9 lesions per patient (range 1.6–2.3). 96.3% (335/348) of all lesions for all readers were scored PI‐RADS ≥3. Readers defined a median of 2 (range 1–18) sectors per lesion. Agreement for detecting index lesions by screen shots was 83.7% (76.1%–89.9%) vs. 71.0% (63.1–78.3%) overlap agreement on the PI‐RADS sector map (P < 0.001). Exact agreement for defining sectors of detected index lesions was only 21.2% (95% confidence interval [CI]: 14.4–27.7%) and rose to 49.0% (42.4–55.3%) when overlap was considered. Agreement on defining the same level of disease (ie, apex, mid, base) was 61.4% (95% CI 50.2–71.8%).Data ConclusionReaders are highly likely to detect the same index lesion on mpMRI, but exhibit poor reproducibility when attempting to define tumor location on the PI‐RADSv2 sector map. The poor agreement of the PI‐RADSv2 sector map raises concerns its utility in clinical practice.Level of Evidence: 3Technical Efficacy: Stage 2J. MAGN. RESON. IMAGING 2018;48:482–490.
Pompeii dilemma: A motivation‐based analysis of tourists' preference for “superstar” archaeological attractors or less renowned archaeological sites in the Vesuvius area
Authors: Ercolano Salvatore , Gaeta Giuseppe Lucio , Parenti Benedetta 
Published: January 2018

AbstractThis paper studies the motivations that trigger tourists' choice of visiting one specific archaeological site among those that exist in the Vesuvius area in southern Italy where, alongside some “superstar” archaeological attractors (Pompeii and Herculaneum), some less renowned sites (Oplontis, Stabiae, and Boscoreale) also exist. Based on data collected through an original survey, this paper proposes an empirical analysis aimed at investigating the correlation that exists between motivations for the visit and the site chosen among those existing in the Vesuvius area. The results contribute to the expanding literature focusing on motivations of cultural and heritage tourism.
Gain Properties and Distributed Feedback Laser Performance of 7F6/Poly(Styrene) Blend Films: Potential Core Material for Plastic Optical Fiber Expanding the Bandwidth to Visible Region
Authors: Zhang Kang , Zhang Qi , Zhang Haoran , Shen Jianping , Niu Qiaoli , Xia Ruidong 
Published: January 2018

AbstractOptical gain properties of blue emission oligomer 7‐unit 9,9‐dihexylfluorene (7F6) and its blends with polystyrene (PS) are reported. 7F6 demonstrates high photoluminescence quantum yield (65%), low amplified spontaneous emission threshold (EthASE = 0.6 kW cm−2), high gain coefficient (g = 90.9 cm−1), and extremely low distributed feedback laser threshold (Ethlaser = 86 W cm−2). Unlike polymer gain materials, the phase separation between 7F6 and PS is small even in a high blending ratio. The 70 and 50 wt% 7F6/PS blends display excellent gain properties with g = 70.7 and 64.3 cm−1, EthASE = 1.1 and 2.1 kW cm−2, and Ethlaser = 0.3 and 0.41 kW cm−2, respectively. The photostability and thermal stability are improved significantly by blending 7F6 into PS. These results promise 7F6/PS blends as a potential core material for expanding the bandwidth of plastic optical fiber.
Crosslinking of Semiaromatic Polyesters toward High‐Temperature Shape Memory Polymers with Full Recovery
Authors: Raidt Thomas , Schmidt Martin , Tiller Joerg C. , Katzenberg Frank 
Published: January 2018

AbstractIn this work, high‐temperature shape memory polymers are realized by end‐group crosslinking of the semiaromatic polyesters polyethylene terephthalate as well as polybutylene terephthalate. Both networks exhibit trigger temperatures distinctly higher than 200 °C and excellent shape memory properties such as storable strains of 200%, full fixity of the applied strain in the temporary shape, and full recovery of the permanent shape.