bluuebunny/crossref_metadata_2025_split huggingface dataset:
High‐Capacity and Long‐Cycle Lifetime Li−CO2/O2 Battery Based on Dandelion‐like NiCo2O4 Hollow Microspheres
Authors: Zou Lu , Jiang Yuexing , Cheng Junfang , Wang Ziling , Jia Lichao , Chi Bo , Pu Jian , Jian Li 
Published: April 2019

AbstractAs a promising energy storage technology, Li−CO2/O2 battery with ultrahigh discharge capacities have received much attention, reaching capacities three times that of Li−O2 batteries. Herein, using an excellent catalyst, NiCo2O4 designed as a 3D dandelion‐like hollow nanostructure, a Li−CO2/O2 battery is systematically investigated to understand how the reaction mechanisms are affected by CO2. With CO2 stabilization, the batteries could achieve a specific discharge capacity as high as 22000 mAh/g and a long‐term cycling performance of up to 140 cycles without apparent deterioration. In addition, the intrinsic mechanism of the current density influence is explored based on the Li2CO3 morphology evolution. Superoxide anion radical species (O2.− ) were identified to be rapidly consumed by CO2, which dramatically enhances the stability of Li−O2 batteries. The results indicate that the NiCo2O4 nanocatalyst can efficiently inhibit Li2CO3 aggregation and realize the maximum utilization of active sites. The results confirm that the 3D dandelion‐like NiCo2O4 catalyst can be a potential cathode for Li−CO2/O2 batteries.
Solvothermal Synthesis of Porous MnF2 Hollow Spheroids as Anode Materials for Sodium‐/Lithium‐Ion Batteries
Authors: Wei Yiyong , Ma Xiaohang , Huang Xiaotong , Zhao Bangchuan , Zhu Xuebin , Liang Changhao , Zi Zhenfa , Dai Jianming 
Published: April 2019

AbstractPorous MnF2 hollow spheroids are synthesized by using a facile solvothermal method. As‐synthesized MnF2 exhibits excellent electrochemical properties. The high reversible capabilities of 0.533 Ah/g at 0.057 A/g and 0.453 Ah/g at 0.577 A/g are obtained after 150 cycles for lithium‐ion batteries. Furthermore, the same MnF2 displays a high reversible specific capacity of 0.199 Ah/g at 2.308 A/g. As to sodium‐ion batteries, an initial reversible capability of 0.41 Ah/g at 0.01 A/g can be acquired and 0.154 Ah/g at 0.05 A/g can be retained after 150 cycles. It is noteworthy that as‐synthesized MnF2 could be a promising anode material in both sodium‐ and lithium‐ion batteries.
Electrochemically Fabricated Ni−P, Ni−S and Ni−Se Materials for Overall Water Splitting: Investigating the Concept of Bifunctional Electrocatalysis
Authors: Sultana Ummul K. , O'Mullane Anthony P. 
Published: April 2019

AbstractThe front cover artwork is provided by the group of Prof. Anthony O′Mullane from Queensland University of Technology (Australia). The image shows the elements used in this study to synthesise our electrocatalysts and we use this theme in celebration of the International Year of the Periodic Table. Read the full text of the Article at 10.1002/celc.201801731.
Reißfest
Authors: Hugelmann Karin 
Published: April 2019

AbstractIm Gegensatz zu vielen anderen Trocknungsverfahren sind Kontaktbandtrockner flexibel einsetzbar und können ‐ von fließfähigen Suspensionen über feste Granulate bis hin zu Pulvern ‐ eine enorme Bandbreite an Stoffen verarbeiten. Konstruktionsbedingt sind die Anlagen jedoch häufig nur schwer zugänglich; Wartungen sowie Reinigungen gestalten sich daher oftmals zeitintensiv und verringern die Verfügbarkeit der Trockner. Die EL‐A Verfahrenstechnik hat daher einen leicht zugänglichen, ergonomischen Kontaktbandtrockner entwickelt.
Wärmekreislauf des Mediums
Authors: Störp Michael 
Published: April 2019

AbstractDie neue Serie Clino TemperPipe sorgt für eine effiziente Temperaturübertragung in Rohrleitungen und in Produktionsanlagen. Eine Erwärmung, Abkühlung und Temperierung eines Mediums in verschiedenen Temperaturstufen im Prozess ist einfach realisierbar.
Funktionelle Beschichtungen von Granulaten
Authors: Mueller Marcus 
Published: April 2019

AbstractIn den letzten Jahren haben sich viele renommierte Düngemittelhersteller für die Aufbereitungstechnik von Eirich entschieden. Die Anforderungen an die Produkte werden immer komplexer. Heute werden auf Granulate vielfach funktionelle Beschichtungen aufgetragen, die z. B. die Nährstoffabgabe steuern sollen.
100% Verfügbarkeit: Drehöfen verzichten auf Stillstand
Authors: Sienk Thorsten 
Published: April 2019

AbstractPneumatische Fördertechnik bestimmt das Bild des Materialflusses in der Zementindustrie. Es sind Gebläse, die das feine Material mit Rohrleitungen durch den Herstellprozess fördern. Die Ansprüche an die Verfügbarkeit der Aggregate sind entsprechend groß, weil ohne Gebläseluft die Produktion stehen würde. Dyckerhoff setzt im Zementwerk Lengerich seit Jahrzehnten Lösungen von AERZEN ein. Es seien vor allem die inneren Werte und die innovative Art der Luftverdichtung, die im Münsterland begeistern.
4 mal Kundennutzen
Authors: Hartleb Jörg 
Published: April 2019

AbstractMobilgeräte von ecom sind als ganzheitliches System zu betrachten, das sich aus zentraler Hardware, eng abgestimmten Peripherals und unterstützender Software nach den Anforderungen der Kunden richtet und sich modular auch für zukünftige Herausforderungen konfigurieren lässt
A web‐based group decision support system for multicriteria problems
Authors: Conceição Luís , Martinho Diogo , Andrade Rui , Carneiro João , Martins Constantino , Marreiros Goreti , Novais Paulo 
Published: April 2019

SummaryOne of the most important factors to determine the success of an organization is the quality of decisions made. Supporting a decision‐making process is a complex task, mainly when decision‐makers are dispersed. Group decision support systems (GDSSs) have been studied over the last decades with the goal of providing support to decision‐makers; however, their acceptance by organizations has been difficult. This happens mostly due to usability problems, loss of interaction between decision‐makers, and consequently, loss of information. In this work, we present a web‐based GDSS developed to support groups of decision‐makers, regardless of their geographic location. The system allows the creation of multicriteria problems and the configuration of the preferences, intentions, and interests of each decision‐maker. The presented system uses a multiagent system to combine and process this information, using virtual agents that represent each decision‐maker. We believe that, with this approach, we will proceed in the refinements of a successful GDSS to correctly support decision‐makers while preserving the valuable intelligence and knowledge that can be generated in face‐to‐face meetings. Furthermore, the high level of usability that the system provides will contribute to an easier acceptance and adoption of this kind of systems.
Self‐Assembly of Diacetylene‐Bridged Phenylenevinylene Oligomers in Water and Organic Solvents
Authors: García‐Iglesias Miguel , Mayoral María José , Serrano‐Molina David , Aparicio Fátima , Vázquez‐González Violeta , González‐Rodríguez David 
Published: April 2019

AbstractRodlike π‐conjugated molecules in which two OPV fragments are connected through a diacetylene bond self‐assemble in aqueous and organic media. Optical spectroscopy and AFM measurements indicated that, in water, strong hydrophobic interactions between π‐cores promote aggregation into robust, uniform micellar structures. In contrast, in apolar solvents, a fibrilar morphology is obtained by coiling of columnar stacks. These stacks are formed in a nucleation‐elongation process with degrees of cooperativity of 0.006, that is influenced by the low rotation barriers around the σ‐bonds in the diacetylene linker.
Magnetic Nanoplatelets for High Contrast Cardiovascular Imaging by Magnetically Modulated Optical Coherence Tomography
Authors: Hu Jie , Gorsak Tanja , Martín Rodríguez Emma , Calle Daniel , Muñoz‐Ortiz Tamara , Jaque Daniel , Fernández Nuria , Cussó Lorena , Rivero Fernando , Aguilar Torres Río , García Solé José , Mertelj Alenka , Makovec Darko , Desco Manuel , Lisjak Darja , Alfonso Fernando , Sanz‐Rodríguez Francisco , Ortgies Dirk H. 
Published: April 2019

AbstractImproving clinical techniques for cardiovascular imaging is important for better diagnosis / treatment of cardiovascular diseases, a main cause of mortality in western countries. One problem is a lack of contrast and hence the difficult interpretation of intracoronary images, especially those achieved by optical techniques, such as intracoronary optical coherence tomography (IC‐OCT). This could be overcome by multifunctional contrast agents, leading to better interpretability. In this work, magnetic nanoplatelets are employed to increase the contrast of IC‐OCT images by means of a magnetically modulated approach. This allows high‐resolution visualization of individual macrophages by IC‐OCT, fundamental in the formation of arteriosclerosis plaques. In addition, it is demonstrated that the nanoplatelets and nanoplatelets‐marked‐macrophages can be magnetically driven to specific sites. Thus, the results herein identify magnetic nanoplatelets as unique contrast agents for high‐resolution cardiovascular imaging by optical coherence tomography.
Defect‐Driven Enhancement of Electrochemical Oxygen Evolution on Fe–Co–Al Ternary Hydroxides
Authors: Sun Yixuan , Xia Yuanyuan , Kuai Long , Sun Hongxia , Cao Wei , Huttula Marko , Honkanen Ari‐Pekka , Viljanen Mira , Huotari Simo , Geng Baoyou 
Published: April 2019

AbstractEfficient, abundant and low‐cost catalysts for the oxygen evolution reaction (OER) are required for energy conversion and storage. In this study, a doping–etching route has been developed to access defect rich Fe–Co–Al (Fe–Co–Al‐AE) ternary hydroxide nanosheets for superior electrochemical oxygen evolution. After partial etching of Al, ultrathin Fe3Co2Al2‐AE electrocatalysts with a rich pore structure are obtained with a shift of the cobalt valence state towards higher valence (Co2+→Co3+), along with a substantial improvement in the catalytic performance. Fe3Co2Al2‐AE shows a notably lower overpotential of only 284 mV at a current density of 10 mA cm−2 and double the OER mass activity of the etching‐free Fe3Co2Al2 with an overpotential of 350 mV. Density functional theory shows the leaching of Al changes the rate‐determining step of the OER from conversion of *OOH into O2 on Fe3Co2Al2 to formation of OOH from *O on the Al‐defective catalysts. This work demonstrates an effective route to design and synthesize transition metal electrocatalysts and provides a promising alternative for the further development of oxygen evolution catalysts.
Machine learning of large‐scale spatial distributions of wild turkeys with high‐dimensional environmental data
Authors: Farrell Annie , Wang Guiming , Rush Scott A. , Martin James A. , Belant Jerrold L. , Butler Adam B. , Godwin Dave 
Published: April 2019

AbstractSpecies distribution modeling often involves high‐dimensional environmental data. Large amounts of data and multicollinearity among covariates impose challenges to statistical models in variable selection for reliable inferences of the effects of environmental factors on the spatial distribution of species. Few studies have evaluated and compared the performance of multiple machine learning (ML) models in handling multicollinearity. Here, we assessed the effectiveness of removal of correlated covariates and regularization to cope with multicollinearity in ML models for habitat suitability. Three machine learning algorithms maximum entropy (MaxEnt), random forests (RFs), and support vector machines (SVMs) were applied to the original data (OD) of 27 landscape variables, reduced data (RD) with 14 highly correlated covariates being removed, and 15 principal components (PC) of the OD accounting for 90% of the original variability. The performance of the three ML models was measured with the area under the curve and continuous Boyce index. We collected 663 nonduplicated presence locations of Eastern wild turkeys (Meleagris gallopavo silvestris) across the state of Mississippi, United States. Of the total locations, 453 locations separated by a distance of ≥2 km were used to train the three ML algorithms on the OD, RD, and PC data, respectively. The remaining 210 locations were used to validate the trained ML models to measure ML performance. Three ML models had excellent performance on the RD and PC data. MaxEnt and SVMs had good performance on the OD data, indicating the adequacy of regularization of the default setting for multicollinearity. Weak learning of RFs through bagging appeared to alleviate multicollinearity and resulted in excellent performance on the OD data. Regularization of ML algorithms may help exploratory studies of the effects of environmental factors on the spatial distribution and habitat suitability of wildlife.
A 3D staggered Lagrangian scheme for ideal magnetohydrodynamics on unstructured meshes
Authors: Xu Xiao , Gao Zhiming , Dai Zihuan 
Published: April 2019

SummaryIn this paper, we propose a 3D staggered Lagrangian scheme for the ideal magnetohydrodynamics (MHD) on unstructured meshes. All the thermal variables and the magnetic induction are defined in the cell centers while the fluid velocity is located at the nodes. The meshes are compatibly discretized to ensure the geometric conservation laws in Lagrangian computation by the classical subcell method, then the momentum equation is discretized using the subcell forces and the specific internal energy equation is obtained by the total energy conservation. Invoking the Galilean invariance, magnetic flux conservation, and the thermodynamic consistency, the expressions of subcell force as well as the cell‐centered velocity are derived. Besides, the magnetic divergence‐free constraint is fulfilled by a projection method after each time step. Various numerical tests are presented to assert the robustness and accuracy of our scheme.
Numerical analysis reliability control for a double‐pipe heat exchanger with virtual entropy generation method
Authors: Tavangar Tooran , Siavash Amoli Behzad , Aghajani Delavar Mojtaba 
Published: April 2019

AbstractThere are two primary laws including the first and second laws of thermodynamics that should be used to assess a process. Generally, only the first law of thermodynamics is investigated in numerical solutions, so it is possible to exist some numerical results that do not satisfy the second law of thermodynamics because of numerical errors. To achieve reliable numerical outcomes, it is better to apply two indexes of HEAT BALANCE ERROR and VIRTUAL ENTROPY GENERATION, which come from the second law of thermodynamics. In other words, an approach to develop computational fluid dynamics investigations is to take second law of thermodynamics into consideration. In this study, two different models including counterflow double‐pipe heat exchanger and single‐pipe with constant wall temperature are simulated in various cases with different efficiencies and temperature ratios. It is found that 46 cases of total 523 double‐pipe models and 24 cases of total 402 simulations of single‐pipe models had unacceptable results regarding to two mentioned criteria. The results revealed that it is less likely to gain unreliable results in smaller efficiency and lower inlet temperature for double‐pipe heat exchanger and single‐pipe respectively.
Flow Plex—A tool for unbiased comprehensive flow cytometry data analysis
Authors: Nowatzky Johannes , Resnick Ezra , Manasson Julia , Stagnar Cristy , Al‐Obeidi Arshed Fahad , Manches Olivier 
Published: April 2019

AbstractIntroductionThe information content of multiparametric flow cytometry experiments is routinely underexploited given the paucity of adequate tools for unbiased comprehensive data analysis that can be applied successfully and independently by immunologists without computational training.MethodsWe aimed to develop a tool that allows straightforward access to the entire information content of any given flow cytometry panel for immunologists without special computational expertise. We used a data analysis approach which accounts for all mathematically possible combinations of markers in a given panel, coded the algorithm and applied the method to mined and self‐generated data sets.ResultsWe developed Flow Plex, a straightforward computational tool that allows unrestricted access to the information content of a given flow cytometry panel, enables classification of human samples according to distinct immune phenotypes, such as different forms of autoimmune uveitis, acute myeloid leukemia vs “healthy”, “old” vs “young”, and facilitates the identification of cell populations with potential biologic relevance to states of disease and health.ConclusionsWe provide a tool that allows immunologists and other flow cytometry users with limited bioinformatics skills to extract comprehensive, unbiased information from flow cytometry data sets.
Melatonin enhances autophagy and decreases apoptosis induced by nanosilica in RAW264.7 cells
Authors: Zhang Shi‐Hai , Wu Hui‐Mei , Li Shuai , Wang Mu‐Zi , Fang Lei , Liu Rong‐Yu 
Published: April 2019

AbstractMelatonin is one of the main hormones that regulate biological rhythms and have immunomodulation, anti‐inflammatory, and antioxidation functions. In this study, we aimed to explore the effect of melatonin on the autophagy, apoptosis, and inflammatory reaction of macrophages (RAW264.7 cells) stimulated by nanosilica. SiO2 (100 mg/mL, 10–20 nm) was used to stimulate RAW264.7 cells at different time points (0, 2, 4, 8, 12, and 24 hr). Melatonin (200 μM) was added to SiO2‐stimulated macrophages at 12 hr. Beclin‐1, LC3, Bax, Bcl‐2, and Caspase‐3 were examined with western blotting. Flow cytometry was used to detect apoptosis. The levels of TNF‐α, IL‐1β, and IL‐18 were detected by ELISA. The level of TNF‐α in the supernatant of SiO2‐stimulated cells gradually increased with time but decreased following melatonin administration. In contrast, the expression of IL‐1β and IL‐18 increased after melatonin treatment. LC3 and Bax signaling pathways were activated in SiO2‐stimulated RAW264.7 cells, showing elevated expression of LC3 and reduced expression of Bax in the melatonin‐treated cells. GFP‐LC3 puncta were significantly increased in SiO2‐stimulated RAW264.7 cells and decreased in melatonin‐treated cells. The apoptotic rate in SiO2‐stimulated RAW264.7 cells increased with time and decreased after melatonin treatment, and the number of phagosomes increased with the stimulation of nanosilica and the treatment of melatonin. Melatonin might promote autophagy and inhibit apoptosis as well as inflammatory responses of RAW264.7 cells stimulated by nanosilica. © 2019 IUBMB Life, 2019
Application of radial GRAPPA techniques to single‐ and multislice dynamic speech MRI using a 16‐channel neurovascular coil
Authors: Ruthven Matthieu , Freitas Andreia C. , Boubertakh Redha , Miquel Marc E. 
Published: April 2019

PurposeTo investigate: (1) the feasibility of using through‐time radial GeneRalized Autocalibrating Partially Parallel Acquisitions (rGRAPPA) and hybrid radial GRAPPA (h‐rGRAPPA) in single‐ and multislice dynamic speech MRI; (2) whether single‐slice dynamic speech MRI at a rate of 15 frames per second (fps) or higher and with adequate image quality can be achieved using these radial GRAPPA techniques.MethodsSeven healthy adult volunteers were imaged at 3T using a 16‐channel neurovascular coil and 2 spoiled gradient echo sequences (radial trajectory, field of view = 192 × 192 mm2, acquired pixel size = 2.4 × 2.4 mm2). One sequence imaged a single slice at 16.8 fps, the other imaged 2 interleaved slices at 7.8 fps per slice. Image sets were reconstructed using rGRAPPA and h‐rGRAPPA, and their image quality was compared using the root mean square error, structural similarity index, and visual assessments.ResultsImage quality deteriorated when fewer than 170 calibration frames were used in the rGRAPPA reconstruction. rGRAPPA image sets demonstrated: (1) in 97% of cases, a similar image quality to h‐rGRAPPA image sets reconstructed using a k‐space segment size of 4, (2) in 98% of cases, a better image quality than h‐rGRAPPA image sets reconstructed using a k‐space segment size of 32.ConclusionThis study confirmed: (1) the feasibility of using rGRAPPA and h‐rGRAPPA in single‐ and multislice dynamic speech MRI, (2) that single‐slice speech imaging at a frame rate higher than 15 fps and with adequate image quality can be achieved using these radial GRAPPA techniques.
What Can Be Learned From Crowdsourced Population Asparagus Urinary Odor Kinetics?
Authors: Facius Axel , Atkinson Linda A. , Hanna Kelly , Coombes Mai Chi , Lahu Gezim , Wagner John A. 
Published: April 2019

Asparagus consumption is associated with the production of malodorous urine. Interindividual variability was previously characterized by an American Society for Clinical Pharmacology and Therapeutics crowdsourced study. To further characterize urinary odor kinetics, we conducted a study with consenting participants from Takeda Pharmaceutical International Company. The participants were randomized to consume a specified number of asparagus spears and asked to record urine odor. A kinetic‐pharmacodynamic model characterized the data from both the newly conducted Takeda study (N = 42) and the previously analyzed American Society for Clinical Pharmacology and Therapeutics studies (total N = 139). The updated model included the identification of an absorption process with a half‐life of 25 minutes. We estimated the elimination half‐life of the asparagus effect on malodorous urine to be 7.2 hours, which was 44% longer in our study. We built on previous experience using an improved R‐Shiny app for conducting the crowdsourcing experiment, further demonstrating the utility of this population kinetics approach in organizational and educational settings.
Topological studies related to molecular systems formed during the Big Bang: H3+ as an example
Authors: Mukherjee Bijit , Shamasundar K. R. , Adhikari Satrajit , Baer Michael 
Published: April 2019

AbstractIn the present article are analyzed the non‐adiabatic coupling terms (NACT) for two molecular systems, namely H3+ and H3. In contrast to previous occasions in which the NACTs are studied along (closed) circular contours usually surrounding conical intersections (ci), in the present article are studied distribution of the NACTs in (planar) configuration spaces (CS). The motivation for this study has to do with a novel idea being mentioned earlier (Molec. Phys., 116, 2435 [2018]; ArXiv:1801.00103) that NACTs are like a Glue (eventually) associated with the ability of creating molecules and/or protecting them from breaking up. It was found that the distributions of the NACTs due to the two molecules are similar as long as the attention is given to regions close to their equilateral cis, but then they behave significantly different in other regions. In case of H3+, the NACTs are distributed rather uniformly whereas, in case of H3 they become spiky the closer they approach the diatom axis. The main conclusion of this study is that the glue which has its origin in the NACTs is most likely to be effective in case of H3+ that explains the creation and later survival of this molecule.