bluuebunny/crossref_metadata_2025_split huggingface dataset:
Leader–member exchange, organizational identification, and knowledge hiding: The moderating role of relative leader–member exchange
Authors: Zhao Hongdan , Liu Weiwei , Li Jie , Yu Xiaoyu 
Published: February 2019

SummaryIn this article, we sought to identify a new interpersonal antecedent of knowledge hiding, namely, leader–member exchange (LMX). Drawing on the group engagement model (an extension of social identity theory within the group/organization context), we built a theoretical model linking LMX and knowledge hiding. This model focuses on the mediating role of organizational identification and the moderating role of relative LMX in influencing the mediation. Using two time‐lagged studies (Study 1: n = 317; Study 2: n = 248) conducted in China, we examined our research model. Study 1 provided support for the proposed hypotheses for evasive hiding and playing dumb but not for rationalized hiding. Study 2 replicated and extended our findings. Results revealed that (a) LMX was negatively related to evasive hiding and playing dumb but not to rationalized hiding; (b) organizational identification mediated the influence of LMX on evasive hiding and playing dumb but not on rationalized hiding; and (c) relative LMX not only moderated the relationship between LMX and organizational identification but also reinforced the indirect effect of LMX on evasive hiding and playing dumb but not on rationalized hiding (via organizational identification). The implications, limitations, and future research directions are also discussed.
Large‐Scale Screening of Natural Products Transactivating Peroxisome Proliferator‐Activated Receptor α Identifies 9S‐Hydroxy‐10E,12Z,15Z‐Octadecatrienoic Acid and Cymarin as Potential Compounds Capable of Increasing Apolipoprotein A‐I Transcription in Human Liver Cells
Authors: van der Krieken Sophie E. , Popeijus Herman E. , Bendik Igor , Böhlendorf Bettina , Konings Maurice C. J. M. , Tayyeb Jehad , Mensink Ronald P. , Plat Jogchum 
Published: February 2019

AbstractIncreasing apolipoprotein A‐I (apoA‐I), the predominant protein of high‐density lipoprotein (HDL) particles, has favorable effects on atherogenic risk factors. Here, we investigated the effects of peroxisome proliferator‐activated receptor α (PPARα) transactivating compounds on apoA‐I transcription in HepG2 cells. A transient PPARα agonist transactivation assay was used to screen 2500 natural compounds. To analyze the effects on apoA‐I transcription, human hepatocellular liver carcinoma (HepG2) were exposed to 0.1, 1, and 10 μg/mL of the natural PPARα transactivators. ApoA‐I mRNA expression was determined by quantitative polymerase chain reaction. Extensive dose–response experiments were performed using compounds that increased apoA‐I transcription by minimally 20%. Kelch‐like ECH‐associated protein 1 (KEAP) and carnitine palmitoyltransferase 1 alpha (CPT1α) expression were used respectively to confirm Bromodomain‐containing protein 4 inhibition or PPARα activation. Twenty‐eight natural compounds increased PPARα transactivation by at least twofold. Despite the increased CPT1α expression seen after the addition of most PPARα activating compounds, CPT1α expression and PPARα transactivation did not correlate. Addition of 0.05 μg/mL 9S‐hydroxy‐10E,12Z,15Z‐octadecatrienoic acid (9(S)‐HOTrE) increased apoA‐I mRNA expression by 35%, whereas 10–25 μg/mL of cymarin increased apoA‐I transcription by 37%. However, combining cymarin and 9(S)‐HOTrE did not result in a synergistic effect, in contrast this combination even decreased apoA‐I transcription. ApoA‐I transcription involves multiple regulatory players, and PPARα transactivation alone is not sufficient. A search for natural compounds resembling the molecular structure of 9(S)‐HOTrE or cymarin could aid to find additional components that increase apoA‐I transcription.
Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico
Authors: Crowley Claire E. , Shea Colin P. , Gandy Ryan L. , Daly Kendra L. 
Published: February 2019

Abstract
Accurate estimates of reproductive potential are a key component of any stock assessment. Multiple factors influencing the variability in batch fecundity of stone crabs Menippe spp. across the Florida fishery were quantified with a negative binomial regression model. Stone crabs were collected bimonthly from Cedar Key, Tampa Bay, Pavilion Key, and Sawyer Key from April 2013 through April 2015 for fecundity analysis. Batch fecundity (number of eggs per clutch) was estimated by using dry weights. Modeling results revealed that fecundity was strongly and positively related to carapace width and highly variable among locations, months, and years. Batch fecundity was lowest in spring and winter and highest in July and August, which agreed with the general understanding of seasonal patterns in crustacean reproductive cycles. Additionally, batch fecundity was 39% lower for crabs with no claws, indicating that claw removal by the fishery negatively affects reproductive output. Comparisons of estimates from a 1993–1995 fecundity study in Tampa Bay indicated that there was little difference in stone crab fecundity between individuals collected in 1993 and those collected in 2013. But this observed temporal pattern represents observations from only a small portion of the fished population and so may not fully reflect the temporal changes in fecundity occurring throughout the fishery. The present study quantified the spatial and temporal factors influencing variability in stone crab fecundity throughout the fished population of Florida. We hypothesize that spatial differences in food quality, food quantity, and fishing effort may be important drivers of variability in stone crab fecundity. Given the intense harvest and variability in reproductive output, further work should be dedicated to identifying critical spawning and recruitment areas, as well as assessments of their connectivity.
Microvascular lining options for subtotal and total nasal reconstruction: A scoping review
Authors: Ramji Maleka , Kim Grace Y. , Pozdnyakov Alex , McRae Mark H. 
Published: February 2019

BackgroundRestoration of nasal lining is essential in reconstruction of subtotal/total nasal defects. When local flaps are inadequate, a microvascular flap should be used. The purpose of this scoping review is to map the literature and identify the described flap options for subtotal/total nasal reconstruction. Further to that, we will summarize the stated advantages and disadvantages, evaluate functional and esthetic outcomes, and appraise the current body of literature.MethodsAn electronic literature search was completed. Studies required adult patients with subtotal/total nasal defects and lining reconstruction with microvascular free flap. Two independent reviewers completed screening and data extraction. Flap characteristics, advantages, disadvantages, functional and esthetic outcomes were reviewed. Two independent reviewers evaluated study quality.ResultsOf 305 initial articles, 22 studies were included (13 case reports, 9 case series) accounting for 65 flaps. Microvascular flaps varied by composition and anatomical location. For functional outcome, 13 studies used clinical exam by surgeon, 5 reported patient being satisfied, 3 studies used endoscopy, and 1 study used nasometry. Assessing esthetic outcome, 13 studies used clinical exam by surgeon, 5 studies reported patient being satisfied, 1 study used patient‐reported outcome measures, and 16 studies included photos. Study quality (modified CARE and PROCESS checklists) was deemed poor. Quality of available evidence was level IV.ConclusionsMicrovascular free flaps for nasal reconstruction, confer an overall satisfactory functional and esthetic outcome. All studies lack a systematic and comprehensive approach to assessing and reporting these outcomes. Future research should provide objective assessment and utilize patient reported outcome measures.
A compact size 2.9‐23.5 GHz microstrip patch antenna with WLAN band‐rejection
Authors: Hussain Niamat , Jeong Minjoo , Park Jiwoong , Rhee Seungyeop , Kim Panyoul , Kim Nam 
Published: February 2019

AbstractThis article presents the design and realization of a compact ultra‐wideband (UWB) antenna with on‐demand WLAN band‐rejection. The antenna consists of a simple truncated rectangular patch with a U‐slot and a partial ground plane, which are both patterned on Taconic TLY‐5 substrate (εr = 2.2). The lower corners of the patch are truncated with a semicircle to realize wideband characteristic, while the notch is obtained by etching a U‐slot on the radiating patch. The proposed antenna outperforms the existing UWB antennas owing to its compact size, radiation stability, and very wide impedance bandwidth. Simulated and measured results show that the novel antenna has a very wide operating bandwidth of 2.9‐23.5 GHz with a VSWR <2, and a notch band from 4.9 to 6.1 GHz to reject IEEE 802.11a and HIPERLAN/2 frequency band. The antenna offers promising performances including moderate gain (Gmax = 6.1 dB), nearly omnidirectional stable radiation patterns, and a compact overall size of 13 × 22 × 0.8 mm3. Besides of the other advantages, this antenna design presents mechanical robustness, easy integration into circuit boards, and excellent low‐cost mass production suitability.
Antenna pattern analysis using S‐parameters for strongly coupled dipole arrays
Authors: Lee Kyoungmin M. , Kang Inwoong , Park Jaedon , Kim Moonil 
Published: February 2019

AbstractAn antenna pattern and efficiency estimation procedure for uniform linear dipole arrays with large mutual coupling is presented. The feed currents for each dipole elements are extracted from S‐parameters with antenna arrays being treated as N‐port circuit networks. The dipole current is assumed to maintain a sinusoidal distribution even in array environments. The estimated patterns for E‐plane and H‐plane linear array examples as well as a Yagi‐Uda sample confirm the validity of the proposed procedure.
Trendbericht Festkörperchemie
Authors: Clemens Oliver , Heine Johanna , Heymann Gunter , Mandel Karl‐Sebastian 
Published: February 2019

AbstractFein abgestimmte Elektrodenkomposite für Feststoffbatterien, Phosphidosilicate als Natriumionenleiter, Erbsenzählerei mit Nanopartikeln, hierarchische Kohlenstoffmaterialien aus metallorganischen Gerüststrukturen, phosphoreszierende Materialien und Neues aus der Hochdruckchemie.
Adsorbenzien: sammeln durch tauschen
Authors: Prelot Bénédicte , Hesemann Peter Hesemann 
Published: February 2019

AbstractIonosilicas sind Funktionsmaterialien für Adsorptionsanwendungen. Ihre Bandbreite zeigt sich vor allem beim Anionentausch für die Aufarbeitung von Industrieabwässern und kontaminierter Lösungen, wie sie beim Rückbau von Kernkraftwerken anfallen können.
Neurite atrophy in dorsal hippocampus of rat indicates incomplete recovery of chronic mild stress induced depression
Authors: Khan Ahmad Raza , Hansen Brian , Danladi Jibrin , Chuhutin Andrey , Wiborg Ove , Nyengaard Jens R. , Jespersen Sune Nørhøj 
Published: February 2019

Depression is a leading cause of disability worldwide, and it can often ensue after a chronic mild stress (CMS) exposure. Despite intensive preclinical and clinical research, an objective test to diagnose depression is still not available, causing suboptimal diagnosis and treatment. Recently, the neuronal tracing technique and stereology showed persistent microstructural alterations in the stress‐sensitive brain regions, such as dendritic atrophy in the hippocampus (HP) and prefrontal cortex, (PFC) and hypertrophy in the amygdala (AM). These brain regions also showed consistent gliosis in cadaver brains of patients with depressive disorders as well as in the animal model of depression. Clinically feasible methods to probe these microstructural alterations could be useful in treatment planning and intervention.The present study employed ex vivo diffusion MRI (dMRI) and immunohistochemistry to identify microstructural alterations in stress‐sensitive brain regions of CMS‐induced anhedonic rats after eight weeks of spontaneous recovery in comparison with age‐matched controls. The investigation employs dMRI‐based neurite density model parameters (ν,Deff, andDL), traditional diffusion kurtosis imaging parameters (mean kurtosis, axial kurtosis, and radial kurtosis), kurtosis tensor parameters (mean kurtosis tensor,WL, andWT), and diffusion tensor parameters (fractional anisotropy, mean diffusivity, axial diffusivity, and radial diffusivity). The neurite density (ν) parameter has shown a significant reduction in dorsal HP in comparison with the control, while immunohistochemistry showed a significant reduction in histological neurite density (Hν) in dorsal HP, ventral HP, and AM.Hνalso showed significant correlation withν, which strengthens the reliability ofνand provides a plausible underpinning of the diffusion signal. However, the correlation was not significant when evaluated in the anhedonic group alone. These stress‐recovery findings are opposite to the changes observed just after the CMS exposure paradigm in our recent in vivo study. The present study revealed long‐term effects of CMS exposure, which may be due to incomplete microstructural normalization or long‐lasting microstructural alterations in dHP.
Optimal design of robust feedforward compensator with gain and phase specifications
Authors: Jon Chung Hyok , Pak Ji Min 
Published: February 2019

SummaryThis paper deals with the design of the robust feedforward compensator for improving the tracking performance of control systems with gain and phase specifications. The feedforward compensator is designed for single‐input–single‐output continuous‐time linear systems with constrained input and model uncertainty. The design objective is to make the transfer characteristic from command to output be one in the presence of the input saturation and the model uncertainty. To do that, the design of the feedforward compensator is formulated as a new gain‐phase optimization problem with both the gain and phase specifications. Then, the design procedures are proposed by using frequency‐matching method based on the closed‐loop frequency response. The proposed method provides a good trade‐off between system performance and control input to overcome performance reduction due to input saturation, and guarantees the robustness of the overall system in the presence of the model uncertainty. Two design examples illustrate that the frequency characteristics and the transient response of the control system are improved by the proposed method.
Refugee children with beta‐thalassemia in Turkey: Overview of demographic, socioeconomic, and medical characteristics
Authors: Yazal Erdem Arzu , Demir Yenigürbüz Fatma , Pekpak Esra , Akıncı Burcu , Aktekin Elif , Bayram Cengiz , Yıldırmak Zeynep Yıldız , Ataseven Eda , Akbayram Sinan , Şaşmaz İlgen , Taburoğlu Yılmaz Başak , Özkan Ayşe , Akpınar Tekgündüz Sibel , Köse Doğan , Karapınar Tuba , Büyükavcı Mustafa , Sal Ertan , Bayhan Turan , Kirkiz Serap , Ünal Şule , Vergin Raziye Canan , Çil Metin , Malbora Barış , Ayçiçek Ali , Yaralı Hüsniye Neşe , Özbek Namık Yaşar 
Published: February 2019

AbstractAimSince the beginning of the Syrian civil war, more than 3.5 million Syrians have been under temporary protection status in Turkey. Because beta‐thalassemia (BT) is a prevalent disorder in the Mediterranean countries, we decided to estimate the prevalence of and make an overview of the demographic, socioeconomic, medical characteristics, and healthcare problems of refugee children with BT.PatientsEighteen Turkish Pediatric Hematology Oncology Centers (PHOC) with 318 refugee children from 235 families participated in the study. The mean age of the patients was 8.1 ± 4.8 years (0.5–21 years). The mean time after immigration to Turkey was 2.5 ± 1.5 years (range, 0.1–7 years). Seventy‐two (22.6%) of them were born and diagnosed with BT in Turkey. On physical examination, 82 patients (26%) were underweight and 121 patients (38%) were stunted. The appearance of a thalassemic face was reported for 207 patients (65.1%). Hepatomegaly and splenomegaly were reported in 217 (68.2%) and 168 (52.8%) patients, respectively. The median ferritin level was 2508 ng/mL (range, 17–21 000 ng/mL) at the first admission, and 2841 ng/mL (range, 26–12 981 ng/mL) at the last visit after two years of follow‐up in a PHOC (P > 0.05). The most frequently encountered mutation was IVSI‐110 (G>A) (31%). Before immigration, only 177 patients (55.6%) reported the use of chelators; after immigration it increased to 268 (84.3%).ConclusionDifficulties in communication, finding a competent translator capable in medical terminology, nonregular use of medications, and insensitivity to prenatal diagnosis were preliminary problems. The current extent of migration poses emerging socioeconomic and humanitarian challenges for refugee patients with BT.
Drug‐induced anaphylactic reactions in children: A retrospective analysis of 159 validated spontaneous reports
Authors: Sachs Bernhardt , Dubrall Diana , Fischer‐Barth Wilma , Schmid Matthias , Stingl Julia 
Published: February 2019

AbstractPurposeThe main objective of this study was to analyze validated cases of drug‐induced anaphylactic reactions in children with regard to incriminated drugs, clinical characteristics, and associated factors. A further objective was to compare differences in incriminated drugs and characteristics between validated cases and a reference excluding anaphylactic reaction cases (basic dataset).MethodsSpontaneous reports of anaphylactic reactions in children (0‐17 years) registered between January 2000 to December 2016 were extracted from the adverse drug reaction database of the German Federal Institute for Drugs and Medical Devices. These reports were restricted to drugs for which at least four cases were found. After case validation, 159 reports remained (validated dataset) and were compared with the basic dataset (n = 12.168 reports) using inferential statistics.ResultsEstimated yearly increase of reports (36.8 vs 0.1), most frequently incriminated drugs (antibiotics 30.2% vs 11%, analgesics/antipyretics 22.0% vs 5.6%; P values less than 0.001) and route of administration (38.4% vs 6.7%) differed between the validated dataset and the basic dataset. Validated cases differed in severity (higher with atracurium), reported symptoms (urticaria leading with analgesics), and associated factors (atopy/allergy rarely reported with antibiotics) depending on the incriminated drug class. In 13.8% (11.3% if excluding repeated readministration in one person) of the cases, the drug had not been tolerated before.ConclusionsA heterogeneous clinical phenotype with differences in associated factors was observed, suggesting different underlying mechanisms triggered by the different drug groups. Occurrence of serious drug‐induced anaphylactic reactions in children could be reduced by carefully considering patient history.
A biopolymer‐based 3D printable hydrogel for toxic metal adsorption from water
Authors: Appuhamillage Gayan A , Berry Danielle R , Benjamin Candace E , Luzuriaga Michael A , Reagan John C , Gassensmith Jeremiah J , Smaldone Ronald A 
Published: February 2019

AbstractHerein, we describe a 3D printable hydrogel that is capable of removing toxic metal pollutants from aqueous solution. To achieve this, shear‐thinning hydrogels were prepared by blending chitosan with diacrylated Pluronic F‐127 which allows for UV curing after printing. Several hydrogel compositions were tested for their ability to absorb common metal pollutants such as lead, copper, cadmium and mercury, as well as for their printability. These hydrogels displayed excellent metal adsorption with some examples capable of up to 95% metal removal within 30 min. We show that 3D printed hydrogel structures that would be difficult to fabricate by conventional manufacturing methods can adsorb metal ions significantly faster than solid objects, owing to their higher accessible surface areas. © 2019 Society of Chemical Industry
Plasma Proteome Signature of Sepsis: a Functionally Connected Protein Network
Authors: Pimienta Genaro , Heithoff Douglas M. , Rosa‐Campos Alexandre , Tran Minerva , Esko Jeffrey D. , Mahan Michael J. , Marth Jamey D. , Smith Jeffrey W. 
Published: February 2019

AbstractSepsis is an extreme host response to infection that leads to loss of organ function and cardiovascular integrity. Mortality from sepsis is on the rise. Despite more than three decades of research and clinical trials, specific diagnostic and therapeutic strategies for sepsis are still absent. The use of LFQ‐ and TMT‐based quantitative proteomics is reported here to study the plasma proteome in five mouse models of sepsis. A knowledge‐based interpretation of the data reveals a protein network with extensive connectivity through documented functional or physical interactions. The individual proteins in the network all have a documented role in sepsis and are known to be extracellular. The changes in protein abundance observed in the mouse models of sepsis have for the most part the same directionality (increased or decreased abundance) as reported in the literature for human sepsis. This network has been named the Plasma Proteome Signature of Sepsis (PPSS). The PPSS is a quantifiable molecular readout that can supplant the current symptom‐based approach used to diagnose sepsis. This type of molecular interpretation of sepsis, its progression, and its response to therapeutic intervention are an important step in advancing our understanding of sepsis, and for discovering and evaluating new therapeutic strategies.
Theoretical investigation on acetylene cyclotrimerization catalysed by TiO2 and Ti
Authors: Deng Zhe‐Peng , Wang Yong‐Cheng , Mou Dan , Sun Yu , Da Hu , Gao Jian‐De 
Published: February 2019

AbstractThe reaction mechanisms for acetylene cyclotrimerization using TiO2 and Ti catalysts were studied by the density functional theory (DFT) method. Interestingly, the reaction catalysed by TiO2 occurs on the potential energy surface (PES) with a singlet state. For the same reaction catalysed by Ti, spin‐orbit coupling (SOC) calculations were performed to discuss spin inversion between the triplet and singlet PESs. The chance that an electron hops in the vicinity of the minimum‐energy crossing point (MECP) was verified regarding the Landau‐Zener model. The possibilities of single (
) and double (
) at MECP1 (SOC = 253.38 cm−1) are about 0.35 and 0.46, respectively. The energetic span model developed by Kozuch was applied in the above reactions. The turnover frequency (TOF)‐determining transition state (TDTS) and TOF‐determining intermediate (TDI) were verified. The TOF value indicates that Ti is a more active catalyst compared with TiO2 in C2H2 cyclotrimerization.
Exploiting catalytic chain transfer polymerization for the synthesis of carboxylated latexes via sulfur‐free RAFT
Authors: Shegiwal Ataulla , Wemyss Alan M. , Schellekens Mike A. J. , de Bont Jens , Town James , Liarou Evelina , Patias Georgios , Atkins Christophe J. , Haddleton David M. 
Published: February 2019

ABSTRACTWe present a systematic study of incorporating carboxyl groups into latex particles to enhance colloidal stability and the physical properties of the latex. Statistical copolymers of methacrylic acid and methyl methacrylate) were synthesized via catalytic chain transfer polymerization (CCTP) in emulsion. The vinyl‐terminated oligomers were in turn successfully utilized as chain transfer agents for the formation of diblock and pseudo triblock copolymers via sulfur‐free reversible addition–fragmentation chain transfer polymerization (SF‐RAFT). These copolymers were characterized using 1H NMR, size exclusion chromatography (SEC), dynamic light scattering (DLS), dynamic mechanical analysis (DMA), contact angle measurements and matrix‐assisted laser desorption/ionization time of flight mass spectroscopy (MALDI‐TOF‐MS) techniques. © 2019 The Authors. Journal of Polymer Science Part A: Polymer Chemistry published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, E1–E9