bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the operator splitting scheme for the Cahn‐Hilliard equation with a viscosity term
Authors: Weng Zhifeng , Zhai Shuying , Feng Xinlong 
Published: April 2019

In this paper, we consider a second‐order fast explicit operator splitting method for the viscous Cahn‐Hilliard equation, which includes a viscosity term αΔut (α ∈ (0, 1)) described the influences of internal micro‐forces. The choice α = 0 corresponds to the classical Cahn‐Hilliard equation whilst the choice α = 1 recovers the nonlocal Allen‐Cahn equation. The fundamental idea of our method is to split the original problem into linear and nonlinear parts. The linear subproblem is numerically solved using a pseudo‐spectral method, and thus an ordinary differential equation is obtained. The nonlinear one is solved via TVD‐RK method. The stability and convergence are discussed in L2‐norm. Numerical experiments are performed to validate the accuracy and efficiency of the proposed method. Besides, a detailed comparison is made for the dynamics and the coarsening process of the metastable pattern for various values of α. Moreover, energy degradation and mass conservation are also verified.
The symbolic meaning of cattle and sheep/goat in the Bronze Age: Faunal inclusions in funerary contexts of South‐Western Iberia
Authors: Costa Cláudia , Bettencourt Ana M.S. , Senra Marta 
Published: April 2019

AbstractThe inclusion of faunal remains in funerary practices is widely documented in Iberian prehistory. For the late prehistory (Neolithic to Bronze Age), there is relatively more data than in earlier periods, with limb segments being very common, and complete animals are rarer. In Bronze Age contexts from South‐Western Iberia, a high percentage of human burials in subterranean chambers (hypogea) are associated with limb bones of cattle (Bos taurus) and sheep/goats (Ovis/Capra), along with other grave goods. Traditionally, this practice is interpreted as the result of rituals of commensality. In this paper, we present a different perspective. Besides commensality, we show that the inclusion of the same species and the same anatomical parts is a highly standardised behaviour. Beyond the tight connection between humans and animals, this pattern also points to a strong symbolism of these domestic species and to symbolic meaning of the anatomical parts themselves.
Grafting of polyaniline by a dynamic inverse emulsion polymerization technique onto reverse osmosis membranes as an antibiofouling agent
Authors: Suckeveriene Ran Y. 
Published: April 2019

This study reports on the benefits of an in situ interfacial dynamic inverse emulsion polymerization process under sonication of aniline in the presence of a commercial reverse osmosis (RO) membrane. This polymerization method is simple and much faster (5‐15 min) than systems reported in the literature. During polymerization, the membranes are coated with polyaniline (PANI) as verified by high‐resolution scanning electron microscopy (HRSEM) images and Fourier‐transform‐infrared (FTIR) measurements. A colony‐counting antimicrobial activity test showed that whereas the reference RO membrane developed a large bacterial colony, the polyaniline‐coated RO membrane had no colonies at all. Surface resistivity was the lowest when the pH levels were below 6, which corresponded to the polyaniline‐grafted conductive layer. The membrane flow properties were only modified slightly as a result of the polyaniline grafting, compared with a pristine reference membrane.
Selective attentional biases towards a self‐related facial feature among orthognathic patients
Authors: Kou Hui , Mi Huan , Zhang Lulu , Bi Taiyong , Wang Tao , Chen Hong 
Published: April 2019

AbstractThe present study aimed to determine what kind of face and which area of the face (eyes or mouth) rapidly capture attention among patients with dentomaxillofacial deformities (DDs). In the present experiments, faces were categorized as highly or lowly attractive (HA and LA, respectively) and as a face with dentomaxillofacial deformities (DD face). A dot‐probe task and a change‐detection task were utilized to examine the attentional bias to the faces and facial features, respectively. In Study 1, we found that DD patients showed an attentional bias to DD male faces compared with HA male faces, while controls showed an opposite attentional pattern. In Study 2, we found that patients responded faster to the changes in the mouths of DD male faces than those of HA and LA faces. Moreover, patients paid less attention to the mouths of HA faces than to the region of the eyes, and they paid less attention than did the controls. These results indicated that DD patients selectively directed their attention to DD male faces and the mouths of these faces. These findings were not evident in female faces. Furthermore, patients showed avoidance of the mouths of HA faces regardless of the gender of the faces.
Optimizing 3D printing performance of acrylonitrile‐butadiene‐styrene composites with cellulose nanocrystals/silica nanohybrids
Authors: Huang Bai , He Hui , Meng Shuna , Jia Yunchao 
Published: April 2019

AbstractThe preparation of 3D printed products with excellent comprehensive performance is still receiving much attention. Cellulose, the most abundant and green natural polymer, was used in this study to fabricate polymeric composites used for 3D printing. Specifically, novel cellulose nanocrystals/silica nanohybrids (CSNs) were synthesized via the sol–gel method using cellulose nanocrystals (CNCs) obtained by hydrolysis of sulfuric acid as raw materials, and the thermostability was significantly improved due to the adsorption of silica (SiO2) on the surface of the CNCs via hydrogen bonding and covalent bonds. Subsequently, the CSNs were used in fused deposition modeling (FDM) with acrylonitrile‐butadiene‐styrene (ABS) as the matrix. Unlike ABS/CNC product which shows obvious yellowing, the ABS/CSN product shows a smooth undefiled surface, demonstrating their excellent applicability to high temperature FDM molding. Further, the effect of different silane coupling agents on the mechanical properties was compared and organically modified CSNs (oCSNs) were prepared using KH570 to optimize the dispersion of the filler and the interaction with the matrix. Satisfactorily, the addition of organically modified oCSNs not only does not degrade the fluidity but it also eliminates the warpage of FDM products and improves both layer adhesion and mechanical properties. This study provides a pioneering strategy for the thermal processing applications of CNCs and the modification of FDM products. © 2019 Society of Chemical Industry
A synthetic double sampling control chart for process mean using auxiliary information
Authors: Haq Abdul , Khoo Michael Boon Chong 
Published: April 2019

AbstractA control chart is a simple yet powerful tool that is extensively adopted to monitor shifts in the process mean. In recent years, auxiliary‐information–based (AIB) control charts have received considerable attention as these control charts outperform their counterparts in monitoring changes in the process parameter(s). In this article, we integrate the conforming run length chart with the existing AIB double sampling (AIB DS) chart to propose an AIB synthetic DS chart for the process mean. The AIB synthetic DS chart also encompasses the existing synthetic DS chart. A detailed discussion on the construction, optimization, and evaluation of the run length profiles is provided for the proposed control chart. It is found that the optimal AIB synthetic DS chart significantly outperforms the existing AIB Shewhart, optimal AIB synthetic, and AIB DS charts in detecting various shifts in the process mean. An illustrative example is given to demonstrate the implementation of the existing and proposed AIB control charts.
Structural and Vibrational Properties of Crystalline β‐Octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine at High Temperatures: Ab Initio Molecular Dynamics Studies
Authors: Xiang Dong , Ji Guangfu , Zhu Weihua 
Published: April 2019

AbstractWe investigated the temperature influence on the structural and vibrational properties of β‐HMX (β‐octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine) by using a combination of ab initio molecular dynamics and density function theory. The results indicate that the lattice constants and unit‐cell volume of HMX do not present obvious temperature effects. Most of the vibrational modes display similar hardening trend under the temperatures, suggesting that the crystal transformation of HMX under heat is through this displacement. The dependence of Infra‐red spectra on the temperature presents red‐shifted and a little decrease in the intensity of lattice vibration. This may suggest that there is a new bond formed or an old bond broken in the system if the temperature is higher than 873 K. The intensity of ratting mode caused by volumetric contraction and Raman are obviously much larger than that of the crystalline HMX at 0 K and the lattice vibrations are blue‐shifted. It demonstrates that the lattice vibrations are much more drastic. It is found that the deformation vibrations of cycle and nitro group are milder at relatively higher temperatures. This suggests that the cycle space becomes small enough to influence the HMX vibrations.
Biocompatible Non‐Toxic Porous Polymeric Materials Based on Carbonate‐ and Phthalate‐Containing Dimethacrylates
Authors: Kovylin Roman S. , Baten'kin Maxim A. , Kulikova Tatyana I. , Egorikhina Marfa N. , Charikova Irina N. , Gusev Sergey A. , Rubtsova Yu. P. , Mlyavykh Sergey G. , Aleynik Diana Ya. , Chesnokov Sergei A. , Fedushkin Igor L. 
Published: April 2019

AbstractPolymer monolith materials of 2 mm thickness with open interconnected pores were obtained by a visible light induced radical polymerization of carbonate‐ or phthalate containing dimethacrylate in the presence of aliphatic alcohols (60 to 70 wt %) as porogenic additives. Obtained materials absorb water easily and reveal a specific surface area of 3.1 to 21.5 m2 g−1 and a porosity of 55–72%. According SEM data the porous monoliths consist of polymer particles (size up to 1 μm) that form 3D structures with a pore size up to 5 μm for poly(carbonatedimethacrylate) and tens of microns for phthalate‐containing polydimethacrylates. Mesenchymal stem cells from the bone marrow (MSC‐BM) of the pig were picked out and characterized. The MTT (3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide) tests on polymers obtained have shown their non‐cytotoxicity. MSC‐BMs spread out well on the polymeric samples and retained their viability and typical morphology during 7 days. Adhesion and viability of MSCs on the surface of materials were detected by calcein staining. The data obtained indicate that the porous polymers derived from dimethacrylates might be promising for construction of plastics for bone grafting.
Sublattice Energy Cluster Construction for The Enhancement of NIR Photocatalytic Performance of LiYF4: Tm@TiO2
Authors: Chen Yanjie , Zou Liang , Zhang Xinqi , Huang Qingming , Yu Han 
Published: April 2019

AbstractIn this work, a stratagem of improving the photocatalytic performance of TiO2 under NIR irradiation was illustrated by the combination of TiO2 with upconversion (UC) luminescent materials that present high intensity of UV band emission resulted from the sublattice energy clusters in tetragonal LiYF4: Tm UC matrix. The sublattice energy clusters were constructed by doping high concentration Yb3+ into tetragonal LiYF4: Tm. 347 nm emission intensity of Tm3+ were enhanced dramatically with the rising of Yb3+ doping concentration and reached the top while 70% Yb3+ was doped, and the intensity was enhanced about 6.15 times compared with that of the usual 20% Yb3+ doped. After being coated with TiO2, the photocatalytic performance of the complex was enhanced about 2.55 folds compared to P25. XRD, SEM, TEM, FTIR, UV‐vis and fluorescence spectrum were employed for the systematical investigation of the relationship between structure and performance. This stratagem may be helpful for the design and preparation of photocatalysts and photo sensors.
Studies towards the Synthesis of (+)‐Lochnerine
Authors: Karella Satish , Raghavan Sadagopan 
Published: April 2019

AbstractThe efforts directed towards the stereoselective synthesis of (+)‐lochnerine, a sarpagine alkaloid is disclosed. The synthesis was designed utilizing an intramolecular catalytic hydroamination of an alkene by an oxazolidine, derived in situ from an unsaturated aldehyde, as the key step. The other key steps of the sequence include substrate‐controlled, Lewis acid promoted C3 allylation to secure the C3/C5 syn‐disubstituted product, Kulinkovich and ring‐closing metathesis reactions.
A Fused Benzothiazolo‐Pyrimidine‐Based Chemosensor for Selective Optical Detection of Fe3+ and I− Ions in Aqueous Media
Authors: Patil Nilesh B. , Patil Umesh D. , Patil Prashant A. , Bothra Shilpa , Sahoo Suban K. , Sehlangia Suman , Pradeep Chullikkattil P. , Patil Ashok A. , Patil Samadhan R. 
Published: April 2019

AbstractA novel fused benzothiazolo‐pyrimidine based optical chemosensor 4‐imino‐2‐methylsulphanyl‐4H‐9‐thia‐1,4a‐diaza‐fluorene‐3‐cabonitrile (BTP‐1) was designed and synthesized efficiently for the selective recognition of Fe3+ and I− ions from the aqueous medium. Sensor BTP‐1 selectively recognizes Fe3+ ions through the quenching of fluorescence emission intensity at 454 nm and I− ions through a hyperchromic shift in UV‐Vis spectra. The recognition of both Fe3+ and I− ions was found free from the interference of other inspected cations and anions, respectively.
Unprecedented Tandem Conjugate Addition/C‐O Ester Migration of α‐Cyano Arylacetates with a Quinone Monoimine
Authors: Jing Yi , Chen Hui , Zhao Si‐Han , Cheng Shao‐Bing , Xu Xiao‐Ying , Yuan Wei‐Cheng , Zhang Xiao‐Mei 
Published: April 2019

AbstractAn unprecedented conjugate addition/C−O ester migration of α‐cyano arylacetates with a quinone monoamine was presented, which allowed for the synthesis of various 2,2‐diarylacetonitriles in moderate to quantitative yields. This method is applicable to a series of α‐cyano arylacetates with different aryl groups. Moreover, in order to demonstrate the synthetic utility of this transformation, 2‐(cyano(phenyl))‐4‐(4‐methylphenylsulfonamido)ethyl carbonate was subjected in hydrogenation to generate a 2,2‐diarylethylcarbamate.
Nucleic Acid–Based Functional Nanomaterials as Advanced Cancer Therapeutics
Authors: Yuan Ye , Gu Zi , Yao Chi , Luo Dan , Yang Dayong 
Published: April 2019

AbstractNucleic acid–based functional nanomaterials (NAFN) have been widely used as emerging drug delivery nanocarriers for cancer therapeutics. Considerable works have demonstrated that NAFN can effectively load and protect therapeutic agents, and particularly enable targeting delivery to the tumor site and stimuli‐responsive release. These outstanding performances are due to NAFN's unique properties including inherent biological functions and sequence programmability as well as biocompatibility and biodegradability. In this Review, the recent progress on NAFN as advanced cancer therapeutics is highlighted. Three main cancer therapy approaches are categorized including chemo‐, immuno‐, and gene‐therapy. Examples are presented to show how NAFN are rationally and exquisitely designed to address problems in cancer therapy. The challenges and future development of NAFN are also discussed toward future more practical biomedical applications.
Cooperation between Weimar and Budapest on computational modelling of steel and composite structures
Authors: Duna László , Kövesdi Balázs , Joó Attila László , Seres Noémi , Budaházy Viktor , Kachichian Mansour 
Published: April 2019

AbstractDedicated to Univ.‐Prof. Dr.‐Ing. habil. Frank Werner on his 70th birthdayZusammenarbeit zwischen Weimar und Budapest bei der rechnergestützten Modellierung von Stahl‐ und VerbundkonstruktionenDer Beitrag gibt einen Überblick über die langjährige Zusammenarbeit zwischen der Bauhaus‐Universität Weimar und der Budapester Universität für Technik und Wirtschaft bei der rechnergestützten Modellierung von Tragwerken. Die Zusammenarbeit umfasst verschiedene Elemente der Forschungsaktivitäten, die Entwicklung experimenteller und numerischer modellbasierter Bemessungsmethoden für innovative Tragwerkdetails von Industriehallen, die bilaterale Ausbildung von Studierenden auf verschiedenen Ebenen (BSc, MSc und PhD) sowie die gemeinsame Betreuung von Doktoranden und Gutachten zu Dissertationen. Die fruchtbare Zusammenarbeit ist das Resultat der freundschaftlichen Beziehung von Prof. Frank Werner und Prof. László Dunai, die den überwiegenden Teil der gemeinsamen Forschungs‐ und Lehrtätigkeit organisiert und geleitet haben. Die gemeinsam erarbeiteten Forschungsergebnisse haben den Wissensstand über die Bemessung von Dachtragwerken mit dünnwandigen Profilen für Industriehallen, über die Auslegung von Schubverbindern kaltgeformten Verbundblechen und über die Modellierung zyklischer Plastizität erweitert. Studenten aus Ungarn hatten die Gelegenheit, im Rahmen von durch Prof. Werner organisierten Summer Schools an der Bauhaus‐Universität Weimar zu studieren. Darüber hinaus betreute er zwei ungarische Doktoranden in Weimar, und ein deutscher Doktorand verbrachte einen Forschungsaufenthalt in Budapest unter der Leitung von Prof. Dunai. Der vorliegende Beitrag bietet zu Ehren des 70. Geburtstags von Prof. Frank Werner einen Überblick über die wichtigsten Aktivitäten und Ergebnisse dieser zwei Jahrzehnte währenden Zusammenarbeit. Sie alle befassen sich mit der rechnerischen Modellierung von Stahl‐ und Verbundkonstruktionen.
Neue Turmhaube für die Johanneskirche zu Hanau
Authors: Hunger Hans‐Reinhard 
Published: April 2019

AbstractHerrn Univ.‐Prof. Dr.‐Ing. habil. Frank Werner zur Vollendung seines 70. Lebensjahres gewidmetAm Ende des Zweiten Weltkrieges wurde die Johanneskirche zu Hanau stark beschädigt. Der Wiederaufbau 1956/57 erfolgte ohne die ursprüngliche dreistufige Turmhaube. Dieser unbefriedigende Zustand führte dazu, dass sich engagierte Bürger der Stadt das Ziel gestellt hatten, die alte Silhouette der Kirche wiederherzustellen. Der Beitrag beschreibt die Planung und den Aufbau einer Stahlkonstruktion in Form der alten Haube.
Dehnungsbasierter Ansatz für die schnelle Verzugsermittlung generativ hergestellter Strukturen
Authors: Hildebrand Jörg , Bergmann Jean Pierre 
Published: April 2019

AbstractHerrn Univ.‐Prof. Dr.‐Ing. habil. Frank Werner zur Vollendung seines 70. Lebensjahres gewidmetDie generative Fertigung von metallischen Strukturen hat sich in den letzten Jahren stark entwickelt und wird zukünftig ein wichtiges Arbeitsfeld in der Forschung darstellen. Bei den unterschiedlichen Verfahren in der generativen Fertigung ist das Wire Arc Additive Manufacturing (WAAM) für großvolumige metallische Bauteile geeignet. Eine Vielzahl von Komponenten wurde mit diesem Verfahren erfolgreich hergestellt. Eine Herausforderung bei der Herstellung der Strukturen ist die Beherrschung des Verzugs. Eine Temperaturdifferenz zwischen Struktur und aktueller Schweißlage ist in Abhängigkeit vom aufgeschmolzenen Material vorhanden und ein Verzug der Struktur ist möglich. Es wird eine Vorgehensweise in der numerischen Simulation für eine schnelle Ermittlung des Verzugs auf Grundlage eines dehnungsbasierten Ansatzes vorgestellt.
Identifying Environmental Cues for Atlantic Sturgeon and Shortnose Sturgeon Spawning Migrations in the Savannah River
Authors: Vine Joshua R. , Holbrook S. Chad , Post William C. , Peoples Brandon K. 
Published: April 2019

AbstractWe investigated environmental cues for spawning migration behavior of Atlantic Sturgeon Acipenser oxyrinchus and Shortnose Sturgeon A. brevirostrum in the lower Savannah River, South Carolina and Georgia, from January 2013 to May 2018. Sturgeon were implanted with acoustic transmitters and detected on an array of 45 stationary receivers located every 5–10 km between Savannah Harbor and the upstream‐most barrier to movement (301 fluvial kilometers). Throughout the study period, we observed six Atlantic Sturgeon attempting nine fall migrations (n = 918 records), four Atlantic Sturgeon attempting eight spring migrations (n = 257 records), and 15 Shortnose Sturgeon attempting 29 spring migrations (n = 3,542 records). Cues for the initiation of migration and upriver movement were species‐specific. We observed significance in the main effects of water temperature, 3‐d lagged temperature, maximum discharge, and 3‐d lagged discharge, as well as in the interaction effect of 3‐d lagged temperature × 3‐d lagged discharge. Water temperature was the primary predictor of sturgeon migrations, which can be used to determine spawning season, but discharge also played a significant role in predicting upriver movement, particularly when high flows began to diminish. Directed flow regulation (e.g., intermittent flood pulsing) during key temperature thresholds may better facilitate the upriver movement of sturgeons and aid in the conservation of these imperiled species.
The Meta VCI Map consortium for meta‐analyses on strategic lesion locations for vascular cognitive impairment using lesion‐symptom mapping: Design and multicenter pilot study
Authors: Weaver Nick A. , Zhao Lei , Biesbroek J. Matthijs , Kuijf Hugo J. , Aben Hugo P. , Bae Hee‐Joon , Caballero Miguel Á.A. , Chappell Francesca M. , Chen Christopher P.L.H. , Dichgans Martin , Duering Marco , Georgakis Marios K. , van der Giessen Ruben S. , Gyanwali Bibek , Hamilton Olivia K.L. , Hilal Saima , vom Hofe Elise M. , de Kort Paul L.M. , Koudstaal Peter J. , Lam Bonnie Y.K. , Lim Jae‐Sung , Makin Stephen D.J. , Mok Vincent C.T. , Shi Lin , Valdés Hernández Maria C. , Venketasubramanian Narayanaswamy , Wardlaw Joanna M. , Wollenweber Frank A. , Wong Adrian , Xin Xu ,   Meta VCI Map consortium, DeCarli C. , Fletcher E.A. , Maillard P. , Barnes J. , Sudre C.H. , Schott J.M. , Ikram M.A. , Papma J.M. , Steketee R.M.E. , Vernooij M.W. , Bordet R. , Lopes R. , Huang C.‐W. , Frayne R. , McCreary C.R. , Smith E.E. ,   Calgary Normative Study group, Backes W. , Köhler S. , van Oostenbrugge R.J. , Staals J. , Verhey F. , Cheng C.Y. , Kalaria R.N. , Werring D. , Hsu J.L. , Huang K.‐L. , van der Grond J. , Jukema J.W. , van der Mast R.C. , Nijboer T.C.W. ,   Framingham Heart Study group, Yu K.‐H. ,   The Dutch Parelsnoer Institute – Neurodegenerative diseases group, Schmidt R. , Pirpamer L. , MacIntosh B.J. , Robertson A.D. , de Leeuw F.‐E. , Tuladhar A.M. , Chaturvedi N. , Tillin T. , Brodaty H. , Sachdev P. ,   TABASCO group, Barkhof F. , van der Flier W.M. , Kappelle L.J. , Biessels Geert Jan 
Published: April 2019

AbstractIntroductionThe Meta VCI Map consortium performs meta‐analyses on strategic lesion locations for vascular cognitive impairment using lesion‐symptom mapping. Integration of data from different cohorts will increase sample sizes, to improve brain lesion coverage and support comprehensive lesion‐symptom mapping studies.MethodsCohorts with available imaging on white matter hyperintensities or infarcts and cognitive testing were invited. We performed a pilot study to test the feasibility of multicenter data processing and analysis and determine the benefits to lesion coverage.ResultsForty‐seven groups have joined Meta VCI Map (stroke n = 7800 patients; memory clinic n = 4900; population‐based n = 14,400). The pilot study (six ischemic stroke cohorts, n = 878) demonstrated feasibility of multicenter data integration (computed tomography/magnetic resonance imaging) and achieved marked improvement of lesion coverage.DiscussionMeta VCI Map will provide new insights into the relevance of vascular lesion location for cognitive dysfunction. After the successful pilot study, further projects are being prepared. Other investigators are welcome to join.