bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation, properties, and laser processing of poly(ɛ‐caprolactone)/poly(lactic acid) blends with addition of natural fibers as a potential for printing plates application
Authors: Mahović Poljaček Sanja , Priselac Dino , Stanković Elesini Urška , Leskovšek Mirjam , Leskovac Mirela 
Published: July 2021

AbstractIn this research, biodegradable blend of poly(ɛ‐caprolactone) (PCL) and poly(lactic acid) (PLA) is proposed as a new material for the production of a printing plate for embossing process. Printing plates for embossing consist of raised printing elements and recessed nonimage elements. In production of printing plates, laser technology was used in order to form a relief printing plate. The embossing process is based on the principle of the pressure of the relief printing plate into the printing substrate, which causes the controlled deformation of the substrate and three‐dimensional (3D) effect. Coir fibers (CFs) were added as a natural filler to PCL/PLA blends to improve and adjust the properties of produced blends. Scanning electron microscopy micrographs, dynamic mechanical analysis analysis, roughness, and hardness were measured on prepared materials, and 2D and 3D microscopy was conducted on laser engraved printing plates. Results have shown that the addition of CFs improved the mechanical properties of produced materials. DMA results indicate the semicrystalline structure of all prepared blends, and that the addition of CFs raises the elasticity of the composites. Laser engraving showed that it is possible to engrave the produced biodegradable materials and to use it as a material for production of printing plates.
Randomized crossover trial to compare driving pressures in a closed‐loop and a conventional mechanical ventilation mode in pediatric patients
Authors: Ceylan Gokhan , Topal Sevgi , Atakul Gulhan , Colak Mustafa , Soydan Ekin , Sandal Ozlem , Sari Ferhat , Ağın Hasan 
Published: July 2021

AbstractIntroductionIn mechanically ventilated patients, driving pressure (ΔP) represents the dynamic stress applied to the respiratory system and is related to ICU mortality. An evolution of the Adaptive Support Ventilation algorithm (ASV® 1.1) minimizes inspiratory pressure in addition to minimizing the work of breathing. We hypothesized that ASV 1.1 would result in lower ΔP than the ΔP measured in APV‐CMV (controlled mandatory ventilation with adaptive pressure ventilation) mode with physician‐tailored settings. The aim of this randomized crossover trial was therefore to compare ΔP in ASV 1.1 with ΔP in physician‐tailored APV‐CMV mode.MethodsPediatric patients admitted to the PICU with heterogeneous‐lung disease were enrolled if they were ventilated invasively with no detectable respiratory effort, hemodynamic instability, or significant airway leak around the endotracheal tube. We compared two 60‐min periods of ventilation in APV‐CMV and ASV 1.1, which were determined by randomization and separated by 30‐min washout periods. Settings were adjusted to reach the same minute ventilation in both modes. ΔP was calculated as the difference between plateau pressure and total PEEP measured using end‐inspiratory and end‐expiratory occlusions, respectively.ResultsThere were 26 patients enrolled with a median age of 16 (9−25 [IQR]) months. The median ΔP for these patients was 10.4 (8.5−12.1 [IQR]) and 12.4 (10.5−15.3 [IQR]) cmH2O in the ASV 1.1 and APV‐CMV periods, respectively (p < .001). The median tidal volume (VT) selected by the ASV 1.1 algorithm was 6.4 (5.1−7.3 [IQR]) ml/kg and RR was 41 (33 50 [IQR]) b/min, whereas the median of the same values for the APV‐CMV period was 7.9 (6.8−8.3 [IQR]) ml/kg and 31 (26−41[IQR]) b/min, respectively. In both ASV 1.1 and APV‐CMV modes, the highest ΔP was used to ventilate those patients with restrictive lung conditions at baseline.ConclusionIn this randomized crossover trial, ΔP in ASV 1.1 was lower compared to ΔP in physician‐tailored APV‐CMV mode in pediatric patients with different lung conditions. The use of ASV 1.1 may therefore result in continued, safe ventilation in a heterogeneous pediatric patient group.
A theoretical investigation on the intermolecular potential curve between ruthenium tetroxide and NOX (X = 1, 2)
Authors: Kido Kentaro 
Published: July 2021

AbstractRuthenium tetroxide (RuO4) is one of chemical species of fission products assumed to be released to the environment during a severe accident of nuclear facilities and a target compound to assess the amount produced, reactivity, mobility and release timing. In this article, the NOX (X = 1, 2) adduct formation of RuO4 has been investigated, based on the potential energy curve (PEC) evaluated by UM06, UTPSSh, CASSCF, and CASPT2 methods. At several stationary points, CCSD and LR‐CCSD(T) energies are also computed for a comparison. The PEC shows that there is an activation barrier to form the NOX adduct and that the process is endothermic in terms of free energy. In the system, the electron transfer occurs from NOX to RuO4 when the bond between the nitrogen and oxo ligand is formed. It has been discussed in detail using active orbitals, weight of electron configurations and spin population obtained by CASSCF.
Robust free‐time‐stable fault tolerant control for rigid satellite attitude system with output constraint
Authors: Zhou Zepeng , Zhu Fanglai , Xu Dezhi , Guo Shenghui , Liu Tianyi , Li Xiandong 
Published: July 2021

ABSTRACTThis article investigates the robust fault tolerant control strategy for a rigid satellite attitude system with external disturbance and actuator fault while the predesigned output constraint is taken into consideration. Based on the interval observer technique, an identical faulty signal reconstruction is first realized by utilizing pure mathematical calculation. Then, to guarantee the desired output constraint, the proposed prescribed performance fault tolerant control framework is constructed with a novel error interval representation which not only reduces the computation burden but also simplifies the output constrained controller design. In addition, by comparing with the existing finite/fixed time control method, the setting time for this control strategy can be assigned freely. The stability of the whole method is guaranteed by Lyapunov method. Finally, simulation results including comparisons with existing work show the effectiveness and advantages of the proposed approach.
Radish and annual ryegrass alter corn yield response to nitrogen rate
Authors: Johnson Jane M. F. , Scott Drew , Weyers Sharon 
Published: July 2021

AbstractFall‐planted cover crops are a strategy for scavenging residual reactive N. In the northern U.S. Corn Belt, the short growing season continues to limit adoption of cover crops. Planting cover crops following wheat (Triticum aestivum L.) in a three‐crop rotation (wheat [cover crop]–corn [Zea mays L]–soybean [Glycine max L. (Merr.)]) increases establishment time. Two cover crops noted for N scavenging, annual ryegrass (Lolium perenne L. ssp. multiflorum (Lam.) Husnot) and radish (Raphanus sativus L. ‘Tillage’), were selected. We hypothesized that corn yield could be maintained with less N fertilizer when following a cover crop compared with no cover crop as determined by direct comparison and regression analyses. The study was repeated 3 yr and had three cover crop treatments: annual ryegrass, radish, and the no‐cover‐crop control. A second treatment, factorially applied in corn years, was N application rates relative the recommended rate of 0× (0 kg N ha–1), 0.25× (39–48 kg N ha–1), 0.5× (78–95 kg N ha–1), and 1× (157–190 kg N ha–1). When cover crops were planted after wheat, about 60 kg N ha–1 yr–1 was measured in the roots and shoots of radish and annual ryegrass, representing 35 or >60% of the inorganic N in the soil. Corn yield averaged 5% higher following radish and 13% lower following annual ryegrass compared with the no‐cover control. Both cover crops scavenged residual N, but neither cover crop treatment supported the hypothesis that corn yield could be maintained with less N fertilizer compared with no cover crop.
Surface modification and structure analysis of coated iron oxide yellow pigments to improve dispersion in organic solvents
Authors: Xu Minhong , Pan Guoxiang , Guo Yuhua , Yang Shengchen , Fang Ze 
Published: July 2021

For improving the dispersion of iron oxide yellow pigments (FeOOH) in organic solvents, a layer of silica was coated on the surface of FeOOH, and then further modified by silane coupling agent, as a heterogeneous coating was formed on the surface of FeOOH. The modified FeOOH was characterized by TEM, XRD, IR, XPS, TG‐DTA, and zeta potential. The dispersibility of modified FeOOH under different conditions was also studied. After coating and modification, a coating layer about 5 nm was formed on the surface of FeOOH. XRD results showed that sodium silicate and KH560 modified did not change crystal structure of FeOOH, even the SiO2 coating layer existed in amorphous form. The FeOOH was bound with SiO2 and silane coupling agent by chemical bond, based on the IR and XPS analysis. The heat resistance of FeOOH was slightly improved after coating. When the amount of SiO2 modified in surface coating was 8% of the mass of FeOOH, the modification time range from 1 to 1.5 h, temperature was between 60°C and 80°C, the pH value was 7–8, and the dispersibility of FeOOH in water was significantly improved. The zeta potential test showed that the surface of FeOOH/SiO2 was negative, and its dispersibility in water was improved because the absolute value of zeta potential increased. The dispersibility of FeOOH/SiO2 was related to the structure of coupling agent. After modification with KH560, the dispersion rate increased from 14.49% to 88.0%, which improved the dispersibility in organic solvents.
Ethnoveterinary botanical survey of medicinal plants used in Pashto, Punjabi and Saraiki communities of Southwest Pakistan
Authors: Abidin Sheikh Zain Ul , Munem Afifa , Khan Raees , Batiha Gaber El‐Saber , Amhad Mushtaq , Zafar Muhammad , Khalil Atif Ali Khan , Hetta Helal F. , Mahmoud Mohamed H. , Sami Abdus , Bhatti Muhammad Zeeshan 
Published: July 2021

AbstractMedicinal plants are highly used in the ethnoveterinary practice as considerable livestock resources in remote areas. The aim of the present study is to explore the ethnoveterinary medicinal practices in three different communities and discuss the cross‐cultural consensus on the usage of medicinal plants for the treatment of animals. The field survey was conducted by the animal healers of the area during the different seasons of plant growth. A total of 83 informants were interviewed through Semi‐structured interview involving experts of traditional knowledge in 21 localities of the three regions (Zhob, D. I. Khan and Mianwali) were conducted. Findings of the study were quantitatively analyzed through the informant consensus factors to identify the homogeneity information provided by the informants. Furthermore, cross‐culture consensuses were analyzed and recorded data were represented in a tabulated and Venn diagrams. In particularly, 59 species of plants were documented in the comparative analysis. Among them, 32 plant species were recorded in Pashto community, while Punjabi and Sarakai communities exhibited nine and four plant species, respectively. Whereas cross‐cultural analysis showed 14 medicinal plants that were commonly utilized by three different ethnic communities, that indicated low interregional consensus in regard to ethnoveterinary practices of medicinal plants. The current study showed that different communities and ethnic groups sharing some traditional knowledge and cross‐culturally approaches have been reported from traditional uses of plants against livestock's diseases. Therefore, current findings are the opportunities to scrutinize the plants for the discovery of new drug sources for humans and animals.
Students' acceptance of case‐based blended learning in mandatory interdisciplinary lectures for clinical medicine and veterinary public health
Authors: Duckwitz Veronica , Vogt Lena , Hautzinger Claudia , Bartel Alexander , Haase Sebastian , Wiegard Mechthild , Doherr Marcus G. 
Published: July 2021

AbstractBackgroundIn German veterinary education interdisciplinary lectures (ILs) are an important and mandatory part of the curriculum as their merging character builds a useful preparation for the future profession as a veterinarian. These lectures should enable students to work on practically‐relevant and interdisciplinary cases, which should ideally be defined jointly by lecturers from different disciplines.MethodsIn order to give students the opportunity to work on these cases and at the same time have contact with their lecturers and fellow students, the Faculty of Veterinary Medicine, Freie Universität Berlin, has converted its former in‐class ILs (face‐to‐face delivery format) into a blended learning format. The mandatory lectures comprise 196 curricular hours and are delivered over the course of three semesters within the veterinary curriculum. The new concept was developed over a period of three academic years and extensively evaluated (old‐new‐comparison) with regard to its acceptance and compliance with national requirements for interdisciplinary teaching.ResultsA total of 306 students were asked to evaluate different aspects of the newly implemented format. Overall, more than 79% of the students attending the newly implemented blended learning format responded positively, and the evaluation showed a significant improvement of learning motivation and acceptance when compared to the traditional teaching format.ConclusionThe results indicated that blended learning is a suitable option for teaching mandatory ILs in clinical medicine and veterinary public health.
Tackling Difference in a Neoliberal Classroom
Authors: Gair Susan , Hager Tamar , Herzog Omri 
Published: July 2021

AbstractIn neoliberal academia, where students are clients and teachers are service providers, tackling diversity and social controversies becomes a risk. In the first scene Susan recounts her concerns and frustrations when obtaining low scores in teaching assessment after conducting a course addressing the atrocities committed against Aboriginal Australians. Omri’s episode demonstrates how consumerism and victimhood culture threaten academic freedom when addressing sensitive topics in the classroom. The chapter ends with Tamar’s story of her encounter with a working-class student who defied any attempt to transform his emotional way of speaking with proper academic conduct. Reflecting on her attempt to silence him due to neoliberal demand for industrial tranquillity, she realizes that her compliance threatens to turn her into an enlightened oppressor.
Closing Thoughts: Academic Hazards and Opportunities
Authors: Gair Susan , Hager Tamar , Herzog Omri 
Published: July 2021

AbstractOur personal stories demonstrate the hazards of neoliberal governmentality. Substituting the essence of academic activity—teaching and knowledge production—with bureaucratic measurements, apparently for the sake of productivity and objectivity, diminishes the value of academic work. As the chapter shows, the oppressive regime of the audit culture, which enforces academics to perform as accountable and capable while silencing feelings of incompetence and stress, requires investing intensified amounts of emotional labour, thus increasing tension and ineptitude. Exploring the reasons for academics’ compliance with such a distressing system, we warn that these institutional processes might annul campus life, the core of academic training and activity. The chapter concludes by suggesting ways to resist these destructive processes, introducing an academy-ruled students and teachers, as an alternative.
Cosmology at the top of the α′ tower
Authors: Quintin Jerome , Bernardo Heliudson , Franzmann Guilherme 
Published: July 2021

AbstractThe cosmology of the fullyα′-corrected duality-invariant action for the Neveu-Schwarz sector of string theory is revisited, with special emphasis on its coupling to matter sources. The role of the duality covariant pressure and dilatonic charge of the matter sector is explored in various contexts, from the low-curvature regime to non-perturbative solutions inα′. We comment on how an infinite tower ofα′ corrections allows for fixed-dilaton de Sitter solutions, even in vacuum. We further investigate the necessary conditions for accelerated expansion in the Einstein frame, as well as for non-singular bounces that could resolve the big bang singularity. In particular, explicit examples are constructed, which show that the tower ofα′ corrections may support an Einstein-frame non-singular cosmological bouncing background, even when the matter sector respects the null energy condition.
Holographic model for heavy quarks in anisotropic hot dense QGP with external magnetic field
Authors: Aref’eva Irina Ya. , Rannu Kristina , Slepov Pavel 
Published: July 2021

AbstractWe present a five-dimensional fully anisotropic holographic model supported by Einstein-dilaton-three-Maxwell action. One of the Maxwell fields provides chemical potential; finite chemical potential values are considered. The second Maxwell field serves for anisotropy, representing real spacial anisotropy of the QGP produced in heavy-ion collisions. The third Maxwell field is related to an external magnetic field. Influence of the external magnetic field on the 5-dim black hole solution and the confinement/deconfinement phase diagram, reconstructing the phase transition curves for heavy quarks, is considered. The effect of the inverse magnetic catalyses is revealed and positions of critical end points are found.
Characters of irrelevant deformations
Authors: Datta Shouvik , Jiang Yunfeng 
Published: July 2021

Abstract
We analyse the $$ T\overline{T} $$
T

T
¯

deformation of 2d CFTs in a special double-scaling limit, of large central charge and small deformation parameter. In particular, we derive closed formulae for the deformation of the product of left and right moving CFT characters on the torus. It is shown that the 1/c contribution takes the same form as that of a CFT, but with rescalings of the modular parameter reflecting a state-dependent change of coordinates. We also extend the analysis for more general deformations that involve $$ T\overline{T} $$
T

T
¯

, $$ J\overline{T} $$
J

T
¯

and $$ T\overline{J} $$
T

J
¯

simultaneously. We comment on the implications of our results for holographic proposals of irrelevant deformations.
Critical behavior of the 2d scalar theory: resumming the N8LO perturbative mass gap
Authors: Heymans Gustavo O. , Pinto Marcus Benghi 
Published: July 2021

Abstract
We apply the optimized perturbation theory (OPT) to resum the perturbative series describing the mass gap of the bidimensional ϕ4 theory in the ℤ2 symmetric phase. Already at NLO (one loop) the method is capable of generating a quite reasonable non-perturbative result for the critical coupling. At order-g7 we obtain gc = 2.779(25) which compares very well with the state of the art N8LO result, gc = 2.807(34). As a novelty we investigate the supercritical region showing that it contains some useful complimentary information that can be used in extrapolations to arbitrarily high orders.
Two-loop leading-colour QCD helicity amplitudes for two-photon plus jet production at the LHC
Authors: Chawdhry Herschel A. , Czakon Michał , Mitov Alexander , Poncelet Rene 
Published: July 2021

Abstract
We calculate the complete set of two-loop leading-colour QCD helicity amplitudes for γγj-production at hadron colliders. Our results are presented in a compact, fully-analytical form.
Correlation functions of spinor current multiplets in $$ \mathcal{N} $$ = 1 superconformal theory
Authors: Buchbinder Evgeny I. , Hutomo Jessica , Kuzenko Sergei M. 
Published: July 2021

Abstract
We consider $$ \mathcal{N} $$
N
= 1 superconformal field theories in four dimensions possessing an additional conserved spinor current multiplet Sα and study three-point functions involving such an operator. A conserved spinor current multiplet naturally exists in superconformal theories with $$ \mathcal{N} $$
N
= 2 supersymmetry and contains the current of the second supersymmetry. However, we do not assume $$ \mathcal{N} $$
N
= 2 supersymmetry. We show that the three-point function of two spinor current multiplets and the $$ \mathcal{N} $$
N
= 1 supercurrent depends on three independent tensor structures and, in general, is not contained in the three-point function of the $$ \mathcal{N} $$
N
= 2 supercurrent. It then follows, based on symmetry considerations only, that the existence of one more Grassmann odd current multiplet in $$ \mathcal{N} $$
N
= 1 superconformal field theory does not necessarily imply $$ \mathcal{N} $$
N
= 2 superconformal symmetry.
Asymptotic Stability of Minkowski Space-Time with Non-compactly Supported Massless Vlasov Matter
Authors: Bigorgne Léo , Fajman David , Joudioux Jérémie , Smulevici Jacques , Thaller Maximilian 
Published: July 2021

AbstractWe prove the global asymptotic stability of the Minkowski space for the massless Einstein–Vlasov system in wave coordinates. In contrast with previous work on the subject, no compact support assumptions on the initial data of the Vlasov field in space or the momentum variables are required. In fact, the initial decay invis optimal. The present proof is based on vector field and weighted vector field techniques for Vlasov fields, as developed in previous work of Fajman, Joudioux, and Smulevici, and heavily relies on several structural properties of the massless Vlasov equation, similar to the null and weak null conditions. To deal with the weak decay rate of the metric, we propagate well-chosen hierarchized weighted energy norms which reflect the strong decay properties satisfied by the particle density far from the light cone. A particular analytical difficulty arises at the top order, when we do not have access to improved pointwise decay estimates for certain metric components. This difficulty is resolved using a novel hierarchy in the massless Einstein–Vlasov system, which exploits the propagation of different growth rates for the energy norms of different metric components.
Rapid quantification of fatty acids in plant oils and biological samples by LC-MS
Authors: Koch Elisabeth , Wiebel Michelle , Hopmann Carolin , Kampschulte Nadja , Schebb Nils Helge 
Published: July 2021

AbstractAnalysis of fatty acids (FA) in food and biological samples such as blood is indispensable in modern life sciences. We developed a rapid, sensitive and comprehensive method for the quantification of 41 saturated and unsaturated fatty acids by means of LC-MS. Optimized chromatographic separation of isobaric analytes was carried out on a C8 reversed phase analytical column (100 × 2.1 mm, 2.6 μm core–shell particle) with a total run time of 15 min with back pressure lower than 300 bar. On an old triple quadrupole instrument (3200, AB Sciex), pseudo selected reaction monitoring mode was used for quantification of the poorly fragmenting FA, yielding limits of detection of 5–100 nM. Sample preparation was carried out by removal of phospholipids and triglycerides by solid-phase extraction (non-esterified fatty acids in oils) or saponification in iso-propanol (fatty acyls). This is not only a rapid strategy for quantification of fatty acyls, but allows the direct combination with the LC-MS-based analysis of fatty acid oxidation products (eicosanoids and other oxylipins) from the same sample. The concentrations of fatty acyls determined by means of LC-MS were consistent with those from GC-FID analysis demonstrating the accuracy of the developed method. Moreover, the method shows high precisions with a low intra-day (≤ 10% for almost all fatty acids in plasma and ≤ 15% in oils) and inter-day as well as inter-operator variability (< 20%). The method was successfully applied on human plasma and edible oils. The possibility to quantify non-esterified fatty acids in samples containing an excess of triacylglycerols and phospholipids is a major strength of the described approach allowing to gain new insights in the composition of biological samples.
Graphical abstract