bluuebunny/crossref_metadata_2025_split huggingface dataset:
Controlling the Product Platform of Carbon Dioxide Reduction: Adaptive Catalytic Hydrosilylation of CO2 Using a Molecular Cobalt(II) Triazine Complex
Authors: Cramer Hanna H. , Chatterjee Basujit , Weyhermüller Thomas , Werlé Christophe , Leitner Walter 
Published: April 2020

AbstractThe catalytic reduction of carbon dioxide (CO2) is considered a major pillar of future sustainable energy systems and chemical industries based on renewable energy and raw materials. Typically, catalysts and catalytic systems are transforming CO2 preferentially or even exclusively to one of the possible reduction levels and are then optimized for this specific product. Here, we report a cobalt‐based catalytic system that enables the adaptive and highly selective transformation of carbon dioxide individually to either the formic acid, the formaldehyde, or the methanol level, demonstrating the possibility of molecular control over the desired product platform.
Occupational Heat Stress, Thermal Comfort, and Cognitive Performance in the OR: An Integrative Review
Authors: Byrne Jill , Ludington‐Hoe Susan M. , Voss Joachim G. 
Published: April 2020

ABSTRACTHeat may cause a stress response in perioperative personnel who wear impervious protective surgical gowns that can trap body heat. Responses to heat may include changes in cognitive function, which may affect performance during operative and other invasive procedures. This integrative literature review sought to identify research articles investigating associations among occupational heat stress, thermal comfort, and cognitive performance. The review found that there is a paucity of research on this topic; however, articles that assessed cognitive performance under heat stress for foundry workers (n = 70), cyclists (n = 10), and untrained participants in simulated settings (n = 32) showed that heat may have negative effects on cognition by affecting memory, reaction time, and complex motor skills. Whether heat affects the cognitive performance of perioperative personnel is an important topic for future research.
Design of Fuzzy Super Twisting Sliding Mode Control Scheme for Unknown Full Vehicle Active Suspension Systems Using an Artificial Bee Colony Optimization Algorithm
Authors: Abdul Zahra Atheel K. , Abdalla Turki Y. 
Published: April 2020

AbstractThis article proposes a new intelligent control scheme that uses the Fuzzy Super Twisting Sliding Mode Concept (FSTSMC) and PID controller tuned with the Artificial Bee Colony (ABC) algorithm to control a full vehicle active suspension system with new convergence proof. Suspension systems are utilized to provide vehicle safety and improve comfortable driving. The effects of road roughness transmitted by tires to the vehicle body can be reduced by using suspension systems. In this work super twisting sliding mode is combined with a fuzzy system to design a robust control method. The super twisting sliding mode concept is utilized to limit and minimize the chattering problem and the fuzzy system is used for estimating the unknown parameters and uncertainty in the suspension system components (spring, damper, and actuator). The advantage of such combination is that it can handle the uncertainties and nonlinearities efficiently. The PID controller is used to create the required force to be produced by the actuator. The proposed control scheme consists of four similar sub control schemes, one for each of the four corners of the vehicle. All parameters in the sub control schemes are optimized using the ABC algorithm. The designed control system is applied for a full vehicle model with 8 degrees of freedom. Simulation results show large reduction in the vibration of the vehicle body when passing on disturbance and also show good robustness properties when tested for different road conditions. Passive and active suspension systems using sliding modecontrol (SMC) and the proposed FSTSMC are compared to test the efficiency and the ability of the proposed control scheme to achieve safe and comfortable driving for a random road profile.
Interspecies prediction of pharmacokinetics and tissue distribution of doxorubicin by physiologically‐based pharmacokinetic modeling
Authors: Lee Jong Bong , Zhou Simon , Chiang Manting , Zang Xiaowei , Kim Tae Hwan , Kagan Leonid 
Published: April 2020

AbstractThe aim of the study was to develop a physiologically‐based pharmacokinetic (PBPK) model to describe and predict whole‐body disposition of doxorubicin following intravenous administration. The PBPK model was established using previously published data in mice and included 10 tissue compartments: lungs, heart, brain, muscle, kidneys, pancreas, intestine, liver, spleen, adipose tissue, and plasma. Individual tissues were described by either perfusion‐limited or permeability‐limited models. All parameters were simultaneously estimated and the final model was able to describe murine data with good precision. The model was used for predicting doxorubicin disposition in rats, rabbits, dogs, and humans using interspecies scaling approaches and was qualified using plasma and tissue observed data. Reasonable prediction of the plasma pharmacokinetics and tissue distribution was achieved across all species. In conclusion, the PBPK model developed based on a rich dataset obtained from mice, was able to reasonably predict the disposition of doxorubicin in other preclinical species and humans. Applicability of the model for special populations, such as patients with hepatic impairment, was also demonstrated. The proposed model will be a valuable tool for optimization of exposure profiles of doxorubicin in human patients.
Decision‐making styles and mental health—A person‐oriented approach through clustering
Authors: Bavolar Jozef , Bacikova‐Sleskova Maria 
Published: April 2020

AbstractPrevious research examining the associations between decision‐making styles and mental health has neglected to look at the configurations of styles. The study identifies mutually exclusive groups of people according to their combination of the five decision‐making styles and examines the differences between them in mental health‐related variables in two studies. In Study 1, decision‐making styles, mental health indicators (well‐being, depression, stress) and socio‐psychological protective factors (resilience, optimism, social support) were examined in university students in two rounds 1 year apart. A cluster analysis revealed three distinct decision profiles—independent/nonintuitive, avoidant/spontaneous and rational/nonavoidant. The best values of mental health‐related variables were found in the rational/nonavoidant profile and the most negative values in the avoidant/spontaneous profile. The decision‐making styles were stable after 1 year although they were not able to explain changes in mental health‐related variables. Study 2 identified three similar clusters in a more general sample—spontaneous/irrational, dependent/avoidant and rational/nonavoidant—with the lowest level of psychological distress symptoms in the rational/nonavoidant cluster. The study highlights the usefulness of combinations of decision‐making styles with regard to mental health as well as noting their specificity according to sample characteristics.
Synthesis, characterization and optical spectroscopy of GdPO4:Er3+
Authors: Ben Amar Nozha , Kallel Tarak , Koubaa Tarak , Hassairi Mohamed Amine , Dammak Mohamed , Cavalli Enrico 
Published: April 2020

AbstractA series of Er3+‐doped GdPO4 phosphors was synthesized using a conventional solid‐state reaction. The monazite structure (space group P121/n1) of the obtained materials was confirmed using X‐ray diffraction and Fourier transform infrared spectroscopy. Their optical spectra (excitation, emission, absorption, decay curves) were measured at room temperature in the visible and near‐infrared (NIR) regions. The UV–visible–NIR optical absorption spectrum of GdPO4:7% Er3+ was analyzed based on Judd–Ofelt (J–O) theory and the J–O intensity parameter (Ω2, Ω4, Ω6) was calculated. J–O intensity parameters were used to evaluate spontaneous emission properties such as branching ratios, transition probabilities, and radiative lifetime. The calculated quantum efficiency of the 1.5 μm emission (4I13/2−4I15/2) was calculated to be 89%. This result proved that GdPO4:Er3+ is suitable for use in optical amplifiers and is a potential host for laser applications. The most interesting transitions, located at about 540 nm, and 1.0 and 1.5 μm were investigated as a function of doping level and of temperature, to assess the conditions needed for the highest emission performance and to explore the range of application, in particular in the fields of lighting, thermal sensing, and of phosphors for bio‐imaging.
Sex differences in the association of photoperiod with hippocampal subfield volumes in older adults: A cross‐sectional study in the UK Biobank cohort
Authors: Majrashi Naif A. , Ahearn Trevor S. , Williams Justin H. G. , Waiter Gordon D. 
Published: April 2020

AbstractIntroductionEven though seasonal and sex‐dependent changes in hippocampal and subfield volumes are well known in animals, little is known about changes in humans. We hypothesized that changes in photoperiod would predict changes in hippocampal subfield volumes and that this association would be different between females and males.MethodsA total of 10,033 participants ranging in age from 45 to 79 years were scanned by MRI in a single location as part of the UK Biobank project. Hippocampal subfield volumes were obtained using automated processing and segmentation algorithms using the developmental version of the FreeSurfer v 6.0. Photoperiod was defined as the number of hours between sunrise and sunset on the day of scan.ResultsPhotoperiod correlated positively with total hippocampal volume and all subfield volumes across participants as well as in each sex individually, with females showing greater seasonal variation in a majority of left subfield volumes compared with males. ANCOVAs revealed significant differences in rate of change in only left subiculum, CA‐4, and GC‐ML‐DG between females and males. PLS showed highest loadings of hippocampal subfields in both females and males in GC‐ML‐DG, CA1, CA4, subiculum, and CA3 for left hemisphere and CA1, GC‐ML‐DG, CA4; subiculum and CA3 for right hemisphere in females; GC‐ML‐DG, CA1, subiculum, CA4 and CA3 for left hemisphere; CA1, GC‐ML‐DG, subiculum, CA4 and CA3 for right hemisphere in males.ConclusionThe influence of day length on hippocampal volume has implications for modeling age‐related decline in memory in older adults, and sex differences suggest an important role for hormones in these effects.
Different neural activations for an approaching friend versus stranger: Linking personal space to numerical cognition
Authors: Rubinsten Orly , Korem Nachshon , Perry Anat , Goldberg Miri , Shamay‐Tsoory Simone 
Published: April 2020

AbstractIntroductionTypically, humans place themselves at a preferred distance from others. This distance is known to characterize human spatial behavior. Here, we focused on neurocognitive conditions that may affect interpersonal distances. The current study investigated whether neurocognitive deficiencies in numerical and spatial knowledge may affect social perception and modulate personal space.MethodIn an event‐related potential (ERP) study, university students with developmental dyscalculia (DD) and typically developing control participants were given a computerized version of the comfortable interpersonal distance task, in which participants were instructed to press the spacebar when they began to feel uncomfortable by the approach of a virtual protagonist.ResultsResults showed that students with deficiencies in numerical and spatial skills (i.e., DD) demonstrated reduced variability in their preferred distance from an approaching friend. Importantly, DD showed decreased amplitude of the N1 wave in the friend condition.ConclusionThese results suggest that people coping with deficiencies in spatial cognition have a less efficient allocation of spatial attention in the service of processing personal distances. Accordingly, the study highlights the fundamental role of spatial neurocognition in organizing social space.
Timing of phase‐amplitude coupling is essential for neuronal and functional maturation of audiovisual integration in adolescents
Authors: Ohki Takefumi , Matsuda Takeru , Gunji Atsuko , Takei Yuichi , Sakuma Ryusuke , Kaneko Yuu , Inagaki Masumi , Hanakawa Takashi , Ueda Kazuhiro , Fukuda Masato , Hiraki Kazuo 
Published: April 2020

AbstractObjectiveThe ability to integrate audiovisual information matures late in adolescents, but its neuronal mechanism is still unknown. Recent studies showed that phase‐amplitude coupling (PAC) of neuronal oscillations, which is defined as the modulation of high‐frequency amplitude by low‐frequency phase, is associated with audiovisual integration in adults. Thus, we investigated how PAC develops in adolescents and whether it is related to the functional maturation of audiovisual integration. In particular, we focused on the timing of PAC (or the coupling phase), which is defined as the low‐frequency phase with maximum high‐frequency amplitude.MethodsUsing magnetoencephalography (MEG) on 15 adults and 14 adolescents while they performed an audiovisual speech integration task, we examined PAC in association cortexes with a trial‐by‐trial analysis.ResultsWhereas delta‐beta coupling was consistently observed in both adults and adolescents, we found that the timing of delta‐beta PAC was delayed by 20–40 milliseconds in adolescents compared with adults. In addition, a logistic regression analysis revealed that the task performance improves as the timing of delta‐beta PAC in the right temporal pole (TP) got closer to the trough position (180 degrees).ConclusionThese results suggest that the timing of PAC is essential for binding audiovisual information and underlies the developmental process in adolescents.
Thermal Conductivity of Multiwalled Carbon Nanotubes‐Kapok Seed Oil‐Based Nanofluid
Authors: Ul Islam Badar , Mukhtar Ahmad , Saqib Sidra , Mahmood Abid , Rafiq Sikander , Hameed Ayesha , Khan Muhammad Saad , Hamid Khalid , Ullah Sami , Al-Sehemi Abdullah G. , Ibrahim Muhammad 
Published: April 2020

AbstractThe synthesis of a nanofluid from multiwalled carbon nanotubes (MWCNTs) and Kapok seed oil by a one‐step method is reported. The nanofluid showed excellent stability of nanoparticle dispersion in the base fluid. Furthermore, this study deals with the prediction of the thermal conductivity of the MWCNTs‐kapok seed oil nanofluid. To improve the prediction of the thermal conductivity of the nanofluid, the artificial neural network (ANN) computing approach was used with different algorithms including the back‐propagation, Levenberg‐Marquardt, and genetic algorithm (GA). Finally, the ANN‐GA model is recommended for the prediction of thermal conductivity with higher accuracy.
A Cationic NHC‐Supported Borole
Authors: Heitkemper Tobias , Sindlinger Christian P. 
Published: April 2020

AbstractThis work describes the synthesis and characterization of a highly reactive cationic borole. Halide abstraction with Li{Al[OC(CF3)3]4} from the NHC‐chloroborole adduct yields the first stable NHC‐supported 1‐(MeNHC)‐2,5‐(SiMe3)2‐3,4‐(Ph*)2‐borole cation. Electronically, it features both a five‐membered cyclic conjugated 4 π‐electron system and a cationic charge and thus resembles the yet elusive cyclopentadienyl cation. The borole cation was characterized crystallographically, spectroscopically (NMR, UV/Vis), by cyclovoltammetry, microanalysis and mass‐spectrometry and its electronic structure was probed computationally. The cation reacts with tolane and reversibly binds carbon monoxide. Direct comparison with the structurally related, yet neutral, 1‐mesityl borole reveals strong Lewis acidity, reduced HOMO–LUMO gaps, and increased anti‐aromatic character.
Highly Stable Radical Cations of N,N’‐Diarylated Tetrabenzotetraaza[8]circulene
Authors: Matsuo Yusuke , Tanaka Takayuki , Osuka Atsuhiro 
Published: April 2020

AbstractN,N’‐Diarylated tetrabenzotetraaza[8]circulenes 3 a and 3 b were synthesized in good yields by a reaction sequence involving oxidation of tetrabenzodiazadithia[8]circulene 5‐Oct and SNAr reaction with aniline derivatives. The obtained aza[8]circulenes 3 a and 3 b were easily oxidized to give their radical cations 3 a+ and 3 b+, which are highly stable under ambient conditions. X‐ray diffraction analysis of radical cation 3 a+ showed a face‐to‐face dimer arrangement with an interplanar separation of 3.320 Å. The spin density of 3 a+ was calculated to be delocalized over the whole circulene π‐systems with spin–spin exchange integral (J=−144 cm−1) in the dimeric part. These radical cations displayed far red‐shifted absorption bands reaching to 2000 nm. Thus this study has proved the hetero[8]circulene scaffold to be a new entry of promising electronics and spin materials.
Zeitliche Darstellung des Alterungsverhaltens eines Oxidationskatalysators in einem Biogas‐BHKW
Authors: Stolze Bettina , Hartmann Ingo 
Published: April 2020

AbstractDie bei der Verbrennung von Biogas freiwerdenden Schademissionen unterliegen gesetzlichen Grenzwerten. Um diese einhalten zu können, bedarf es einer Abgasnachbehandlung mittels Oxidationskatalysator. Im Laufe der Zeit kommt es durch Alterung des Katalysators zu abnehmenden Umsätzen der Schadstoffe. Bereits nach nur 1,5 Jahren Betriebszeit ist daher die Einhaltung des Formaldehydgrenzwertes nicht mehr sicher möglich. Als Ursache konnte hauptsächlich die Ablagerung von anorganischen Verbindungen (Ölaschen) identifiziert werden. Hierdurch werden aktive Zentren blockiert und Poren verstopft.
Palladium‐Catalzyed Atroposelective 16‐Membered Macrocyclization: Total Synthesis of Isoplagiochin D†
Authors: Xi Junwei , Gu Zhenhua 
Published: April 2020

Summary of main observation and conclusionIsoplagiochin D is a ring‐strained macrocyclic bisbibenzylis, which showed stable axial chirality in one biaryl structure, and semistable axial chirality in the other biaryl moiety. We reported here an unprecedented example for the catalytically asymmetric synthesis of ring‐strained atropisomers via Pd‐catalyzed macrocyclization between benzyl halides and carbenes. This newly developed Pd‐catalyzed asymmetric macrocyclization protocol enabled us a quick synthesis of isoplagiochin D in a highly enantioselective manner.
Optimal timing of chemoradiotherapy after surgical resection of glioblastoma: Stratification by validated prognostic classification
Authors: Press Robert H. , Shafer Sarah L. , Jiang Renjian , Buchwald Zachary S. , Abugideiri Mustafa , Tian Sibo , Morgan Tiffany M. , Behera Madhusmita , Sengupta Soma , Voloschin Alfredo D. , Olson Jeffrey J. , Hasan Shaakir , Blumenthal Deborah T. , Curran Walter J. , Eaton Bree R. , Shu Hui‐Kuo G. , Zhong Jim 
Published: April 2020

BackgroundPrevious studies examining the time to initiate chemoradiation (CRT) after surgical resection of glioblastoma have been conflicting. To better define the effect that the timing of adjuvant treatment may have on outcomes, the authors examined patients within the National Cancer Database (NCDB) stratified by a validated prognostic classification system.MethodsPatients with glioblastoma in the NCDB who underwent surgery and CRT from 2004 through 2013 were analyzed. Radiation Therapy Oncology Group recursive partitioning analysis (RPA) class (III, IV, V) was extrapolated for the cohort. Time intervals were grouped weekly, with weeks 4 to 5 serving as the reference category for analyses. Kaplan‐Meier analysis, log‐rank testing, and multivariate (MVA) Cox proportional hazards regression were performed.ResultsIn total, 30,414 patients were included. RPA classes III, IV, and V contained 5250, 20,855, and 4309 patients, respectively. On MVA, no time point after week 5 was associated with a change in overall survival for the entire cohort or for any RPA class subgroup. The periods of weeks 0 to 1 (hazard ratio [HR], 1.18; 95% CI, 1.02‐1.36), >1 to 2 (HR, 1.23; 95% CI, 1.16‐1.31), and >2 to 3 (HR, 1.11; 95% CI, 1.07‐1.15) demonstrated slightly worse overall survival (all P < .03). The detriment to early initiation was consistent across each RPA class subgroup.ConclusionsThe current data provide insight into the optimal timing of CRT in patients with glioblastoma and describe RPA class‐specific outcomes. In general, short delays beyond 5 weeks did not negatively affect outcomes, whereas early initiation before 3 weeks may be detrimental.
Changes in prostate‐specific antigen at the time of prostate cancer diagnosis after Medicaid expansion in young men
Authors: Weiner Adam B. , Vo Amanda X. , Desai Anuj S. , Hu Jim C. , Spratt Daniel E. , Schaeffer Edward M. 
Published: April 2020

BackgroundThe objective of this study was to determine the effect of Medicaid expansion under the Patient Protection and Affordable Care Act (January 1, 2014) on the epidemiology of high‐risk prostate‐specific antigen (PSA) levels (≥20 ng/mL) at the time of prostate cancer (PCa) diagnosis. The authors hypothesized that better access to care would result in a reduction of high‐risk features at diagnosis.MethodsA retrospective cohort study was performed of 122,324 men aged <65 years who were diagnosed with PCa within the National Cancer Database. Difference‐in‐difference (DID) analyses adjusting for sociodemographic variables using linear regression compared PSA levels at diagnosis before expansion (2012‐2013) and after expansion (2015‐2016) between men residing in states that did or did not expand Medicaid.ResultsFrom 2012 to 2016, the proportion of men with PSA levels ≥20 ng/mL increased (from 18.9% to 19.8%) in nonexpansion states and decreased (from 19.9% to 18.2%) in expansion states. Compared with men in nonexpansion states, men in expansion states experienced a decline in PSA ≥20 ng/mL (DID, −2.33%; 95% CI, −3.21% to −1.44%; P < .001). Accordingly, the proportion of men presenting with high‐risk disease decreased in expansion states relative to nonexpansion states (DID, −1.25%; 95% CI, −2.26% to 0.25%; P = .015). A similar statistically significant decrease in PSA levels ≥20 ng/mL was noted among black men (DID, −3.11%; 95% CI, −5.25% to 0.96%; P = .005).ConclusionsIn Medicaid expansion states, there was an associated decrease in the proportion of young men presenting with PSA ≥20 ng/mL at the time of PCa diagnosis. These results suggest that Medicaid expansion improved access to PCa screening. Longer term data should assess oncologic outcomes.
Data linking over RDF knowledge graphs: A survey
Authors: Assi Ali , Mcheick Hamid , Dhifli Wajdi 
Published: April 2020

SummaryInstance matching (IM) is the process of matching instances across Knowledge Bases (KBs) that refer to the same real‐world object (eg, the same person in two different KBs). Several approaches in the literature were developed to perform this process using different algorithmic techniques and search strategies. In this article, we aim to provide the rationale for IM and to survey the existing algorithms for performing this task. We begin by identifying the importance of such a process and define it formally. We also provide a new classification of these approaches depending on the “source of evidence,” which can be considered as the context information integrated explicitly or implicitly in the IM process. We survey and discuss the state‐of‐the‐art IM methods regarding the context information. We, furthermore, describe and compare different state‐of‐the‐art IM approaches in relation to several criteria. Such a comprehensive comparative study constitutes an asset and a guide for future research in
IM.