bluuebunny/crossref_metadata_2025 huggingface dataset:
Antiskyrmions and their electrical footprint in crystalline mesoscale structures of Mn1.4PtSn
Authors: Winter Moritz , Goncalves Francisco J. T. , Soldatov Ivan , He Yangkun , Céspedes Belén E. Zúñiga , Milde Peter , Lenz Kilian , Hamann Sandra , Uhlarz Marc , Vir Praveen , König Markus , Moll Philip J. W. , Schlitz Richard , Goennenwein Sebastian T. B. , Eng Lukas M. , Schäfer Rudolf , Wosnitza Joachim , Felser Claudia , Gayles Jacob , Helm Toni
Published: December 2022

Skyrmionic materials hold the potential for future information technologies, such as racetrack memories. Key to that advancement are systems that exhibit high tunability and scalability, with stored information being easy to read and write by means of all-electrical techniques. Topological magnetic excitations such as skyrmions and antiskyrmions, give rise to a characteristic topological Hall effect. However, the electrical detection of antiskyrmions, in both thin films and bulk samples has been challenging to date. Here, we apply magneto-optical microscopy combined with electrical transport to explore the antiskyrmion phase as it emerges in crystalline mesoscale structures of the Heusler magnet Mn1.4PtSn. We reveal the Hall signature of antiskyrmions in line with our theoretical model, comprising anomalous and topological components. We examine its dependence on the vertical device thickness, field orientation, and temperature. Our atomistic simulations and experimental anisotropy studies demonstrate the link between antiskyrmions and a complex magnetism that consists of competing ferromagnetic, antiferromagnetic, and chiral exchange interactions, not captured by micromagnetic simulations.
Milestones in corrole chemistry: historical ligand syntheses and post-functionalization
Authors: Kumar Anil , Kim Donghyeon , Kumar Sachin , Mahammed Atif , Churchill David G. , Gross Zeev
Published: December 2022

The first milestone of advancing from multistep to one-pot syntheses, allowed for systematic investigation of corrole/metallocorrole properties and the design of new derivatives for their introduction as the key elements in advanced applications.
Nucleic acid amplification test (NAAT) conducted in a microfluidic chip to differentiate between various ginseng species
Authors: Oberc Christopher , Sojoudi Parsa , Li Paul C. H.
Published: December 2022

Ginseng roots can be difficult to differentiate physically. To overcome this difficulty, a molecular test, which has been developed for use in a microfluidic chip, amplifies 5 genomic samples and authenticate 3 of them, but two may be mislabeled.
Determination of vitamin D3 conjugated metabolites: a complementary view on hydroxylated metabolites
Authors: Castillo-Peinado Laura de los Santos , Calderón-Santiago Mónica , Sánchez-Cano Rafael Luis , Quesada-Gómez Jose Manuel , Bouillon Roger , Priego-Capote Feliciano
Published: December 2022

A new perspective on the evaluation of the vitamin D endocrine system status involving conjugated metabolites.
Hydrazone-based boron difluoride complexes as triplet photosensitizers for singlet oxygen generation
Authors: van Vliet Sven , Hermens Johannes G. H. , Fu Youxin , Pfeifer Lukas , Feringa Ben L.
Published: December 2022

Benchstable hydrazone-based boron difluoride complexes possessing high quantum yields for singlet oxygen generation enable sustainable photooxygenations on preparative scale.
Synthesis of functionalized spirocyclic oxetanes through Paternò–Büchi reactions of cyclic ketones and maleic acid derivatives
Authors: Michalska Weronika Z. , Halcovitch Nathan R. , Coote Susannah C.
Published: December 2022

A telescoped three-step sequence to functionalised spirocyclic oxetanes is reported, involving Paternò–Büchi reactions between maleic acid derivatives and cyclic ketones.
Tuning the photocurrent responsive and resistive switching performances of stilbazolium/iodoargentate hybrids by modulating the aggregation mode among chromophores
Authors: Chen Jing-Jing , Huang Chang-Qi , Yi Hong-Mei , Lv Zhou-Lin , Wu Wei , Zheng Hui-Dong , Li Hao-Hong
Published: December 2022

D–π–A stilbazolium-type dyes with substitutes ranging from –C2H5CN to –C2H5OH were incorporated with iodoargentates to generate three hybrids, whose photo/electrical performance will be enhanced greatly by modulating aggregation modes.
Accurate measurement of sequential Ar desorption energies from the dispersion-dominated Ar1–3 complexes of aromatic molecules
Authors: Khodia Saurabh , Jarupula Ramesh , Maity Surajit
Published: December 2022

Laser spectroscopic determination of the energies associated to the gradual desorption of Ar atoms non-covalently bound to the surface of an aromatic molecule
Exploring the state- and allele-specific conformational landscapes of Ras: understanding their respective druggabilities
Authors: Wang Hui , Liu Dan , Yu Yongkui , Fang Mengqi , Gu Xue , Long Dong
Published: December 2022

The state- and allele-specific effects on the transient druggable conformers of Ras have been quantifiedviaan integrative NMR and computational approach, revealing the SII-P-ASA dependent protein druggability.
Conformational isomeric thermally activated delayed fluorescence (TADF) emitters: mechanism, applications, and perspectives
Authors: Wu Hao , Shi Yi-Zhong , Wang Kai , Yu Jia , Zhang Xiao-Hong
Published: December 2022

In this review, we summarized the mechanism and recent progress of conformational isomeric TADF emitters, and classified them according to their different applications, along with an outlook on their perspectives.
Selective anisotropic growth of Bi2S3 nanoparticles with adjustable optical properties
Authors: Escoda-Torroella Mariona , Moya Carlos , Ruiz-Torres José A. , Fraile Rodríguez Arantxa , Labarta Amílcar , Batlle Xavier
Published: December 2022

Controlled synthesis and functionalization of elongated Bi2S3 NPs with tunable optical properties.
Quasi-classical trajectory study of the OH− + CH3I reaction: theory meets experiment
Authors: Tasi Domonkos A. , Michaelsen Tim , Wester Roland , Czakó Gábor
Published: December 2022

Dynamics of the OH− + CH3I reaction is studied using a high-level ab initio analytical potential energy surface and the quasi-classical trajectory method allowing direct comparison with crossed-beam experiments.
Effect of d-β-hydroxybutyrate-(R)-1,3 butanediol on plasma levels of asprosin and leptin: results from a randomised controlled trial
Authors: Charles Sanjali , Liu Yutong , Kimita Wandia , Ko Juyeon , Bharmal Sakina H. , Petrov Maxim S.
Published: December 2022

Acute supplementation with d-β-hydroxybutyrate-(R)-1,3 butanediol had no significant effect on the circulating levels of asprosin and leptin in people with prediabetes.
Structure-specific antitumor effects and potential gut microbiota-involved mechanisms of ginseng polysaccharides on B16F10 melanoma-bearing mice
Authors: Xie Ni-Na , Wu Cheng-Ying , Ge Qiong , Zhou Jing , Long Fang , Mao Qian , Li Song-Lin , Shen Hong
Published: December 2022

GP-n contribute to the anti-melanoma effects of GP-c, and the potential mechanisms might be related with its structure, specifically the upregulation of Allobaculum and Bifidobacterium and SCFAs levels, such as acetic acid and butyric acid.
Poria cocos oligosaccharides ameliorate dextran sodium sulfate-induced colitis mice by regulating gut microbiota dysbiosis
Authors: Lan Ke , Yang Huabing , Zheng Junping , Hu Haiming , Zhu Tianxiang , Zou Xiaojuan , Hu Baifei , Liu Hongtao
Published: December 2022

PCOs could inhibit intestinal inflammation and restore gut barrier integrity in DSS-induced colitis mice. The gut microbiota plays a key role in colitis treatment using PCOs.
Promoting the production of 5-hydroxymethylfurfural from high-concentration fructose by creating micro-reactors in a mixed solvent
Authors: Hu Yexin , Li Hui , Hu Ping , Li Linzhen , Wu Di , Xue Zhidan , Hu Changwei , Zhu Liangfang
Published: December 2022

An efficient catalytic system for producing 5-hydroxymethylfurfural from high-concentration fructose has been built by creating micro-reactors with cetyltrimethylammonium bromide in a mixed solvent of 1,4-dioxane and water.
Simple in situ preconcentration for electrolyte atmospheric liquid discharge optical emission spectrometric determination of trace cadmium on microplastics
Authors: Chen Jiadeng , Jiang Xiaoming , Tian Yunfei , Hou Xiandeng
Published: December 2022

In situ evaporation preconcentration enhances the sensitivity of liquid discharge optical emission spectrometric determination of cadmium on microplastics.
Effect of gold nanoparticle concentration on spectral emission of AlO molecular bands in nanoparticle-enhanced laser-induced Al plasmas
Authors: Zhang Fangjian , Wang Qiuyun , Jiang Yuanfei , Chen Anmin , Jin Mingxing
Published: December 2022

This study optimized gold nanoparticle concentration to improve the spectral emission of AlO molecular bands in nanoparticle-enhanced laser-induced Al plasmas.
SARS-CoV-2 proteins monitored by long-range surface plasmon field-enhanced Raman scattering with hybrid bowtie nanoaperture arrays and nanocavities
Authors: Luo Xiaojun , Yue Weiling , Zhang Shutong , Liu Haopeng , Chen Zhinan , Qiao Ling , Wu Caijun , Li Panjie , He Yi
Published: December 2022

A long-range SERS substrate composed of a bowtie nanoaperture array and a nanocavity is reported. The substrate demonstrated an extended probing distance, stronger E-field strength, and an excellent LOD for the SARS-CoV-2 spike and nucleocapsid proteins, respectively.
Boron-based tubular BeB12+and quasi-planar BeB120/−clusters: structural transformation and chemical bonding
Authors: Feng Lin-Yan , Wang Ying-Jin , Hu Xiao-Bo , Miao Chang-Qing , Yan Miao , Gao Yan
Published: December 2022

The BeB12+cluster adopts tubular structure, featuring three-fold π/σ aromaticity. Once sequential reduction, the structural transformation occurs from tubular shape to planar. The planar BeB12−is governed by 7π/10σ delocalization.
Incorporation of 1-ethyl-3-methyl-imidazolium acetate into UiO-66 as an efficient sorbent for carbon dioxide capture
Authors: Nie Shiyu , Chen Fengfeng , Shen Tianbo , Wang Tingting , Di Ningyu , Gao Junkuo
Published: December 2022

[Emim][Ac] was incorporated in the pore of UiO-66 for highly efficient CO2/N2 separation.
Tiny spots to light the future: advances in synthesis, properties, and application of perovskite nanocrystals in solar cells
Authors: Scalon Lucas , Freitas Flavio Santos , Marques Francisco das Chagas , Nogueira Ana Flávia
Published: December 2022

We reviewed recent findings regarding the synthesis of perovskite nanocrystals, their application in solar cells, the impact of surface chemistry and device interfaces on efficiency, and a perspective on the up-scaling of this technology.
An efficient metal free synthesis of 2-aminobenzothiozoles – a greener approach
Authors: Ganesh Krithika , Sambasivam Ganesh , Gavara Govindarajulu , S Ramraj , Rajendra Gaikwad , Karthikeyan S.
Published: December 2022

A facile, green, metal-free and scalable synthesis of 2-aminobenzothiazoles has been developed.
Phosphine-catalysed denitrative rearomatising (3 + 2) annulation of α,β-ynones and 3-nitroindoles
Authors: Dutta Lona , Chattopadhyay Anwita , Yadav Nisha , Ramasastry S. S. V.
Published: December 2022

The first rearomatising (3 + 2) annulation of 3-nitroindoles and α,β-ynones has been achieved under metal-free conditions to access various α-arylidene cyclopenta[b]indoles.
Eye Fixation Behaviors and Processing Time of People With Aphasia and Neurotypical Adults When Reading Narratives With and Without Text-to-Speech Support
Authors: Knollman-Porter Kelly , Bevelhimer Andrew , Hux Karen , Wallace Sarah E. , Hughes Michael R. , Brown Jessica A.
Published: December 2022

Background:

Researchers have used eye-tracking technology to investigate eye movements in neurotypical adults (NAs) when reading. The technology can provide comparable information about people with aphasia (PWA). Eye fixations occurring when PWA do and do not have access to text-to-speech (TTS) technology are of interest because the support improves reading comprehension and decreases processing time for at least some PWA.

Aims:

This study's purpose was to examine forward, regressive, and off-track eye fixations when PWA and NAs read narratives in read-only (RO) and TTS conditions. A secondary aim was to examine the influence of eye fixations on processing time.

Method and Procedure:

A Tobii Dynavox Pro Spectrum eye tracker recorded eye movements of nine PWA and nine NAs while reading narratives in two conditions. Movements of interest were forward fixations; within-word, within-sentence, and previous-sentence regressive fixations; and off-track fixations.

Outcomes and Results:

PWA exhibited significantly more forward and regressive fixations in the RO than TTS condition, whereas NAs showed opposite behaviors. NAs had significantly more off-track fixations in the TTS than RO condition, whereas PWA exhibited no difference across conditions. PWA took significantly longer to process content in the RO condition, whereas NAs took longer in the TTS condition.

Conclusions:

PWA and NAs differ in important ways when processing texts with and without TTS support. Examining eye-tracking data provides a means of gaining insight into the decoding and reading comprehension challenges of PWA and helps elucidate how assistive technology can mediate these challenges.
Complexities of Delivering Corrective Feedback in Clinical Education for Speech-Language Pathologists
Authors: Kleinhans Kelly A. , Peak Alison D.
Published: December 2022

Purpose:

The intent of this tutorial is to promote speech-language pathology clinical educators' professional knowledge of feedback as a pedagogical intervention. This tutorial was formatted to enhance an educator's effectiveness in implementing feedback to promote professional growth for speech-language pathology students, new graduates, and those learning new skills. Special attention is given to the use of feedback in the supervisory conference.

Method:

Online databases were used to complete a focused literature review to identify current trends and evidence for using feedback in clinical education.

Discussion:

The construct of feedback, corrective feedback, and the sequencing of feedback are described. Feedback as a teaching tool in clinical education settings is often characterized as a learning conversation grounded in adult learning theory. Comparisons between feedback, adult learning theory, and various pedagogical approaches will be drawn. This tutorial highlights the interpersonal nature of feedback and explains how giving and receiving feedback are influenced by the cognitive and affective states of both the educator and the learner. Examples of utilizing feedback in various situations are provided to promote generalization between the tutorial and the reader's daily work.

Conclusion:

Recommendations for the use of feedback to inform the next steps in research and educational implementation are provided.
Global centralised and structured discriminative non‐negative matrix factorisation for hyperspectral unmixing
Authors: Li Xue , Cao Sifan , Huang Dan , Zhang Ming , Li Yiwei
Published: December 2022

Advances have been achieved in hyperspectral unmixing using the existing manifold Non‐negative Matrix Factorisation methods, although most of these methods only exploit the preliminary structural information, that is, the nearest neighbour graph. Consequently, the performance of these methods would be degraded when considering only the geometrical structure due to the diverse distribution of the hyperspectral data, that is, the close pixels could belong to different categories or the distant points could be sampled from the same classes. In this context, the present study worked from the perspective of both global and local data relationships to develop and propose a novel approach—the Global centralised and Structured discriminative Non‐negative Matrix Factorisation (GSNMF)—to achieve a further effective representation of hyperspectral unmixing. GSNMF involved maintaining the global centralised clustering and the local structured discriminative regularisation, based on which it could perfectly mine the structure information and drive a discriminative representation of the data. Experiments comparing the application of GSNMF and the state‐of‐the‐art methods to synthetic data demonstrated the superiority of GSNMF. In addition, the consistency of the fractional abundances obtained using GSNMF with the real distributions of spectral data was evaluated on two real‐world datasets.
Optimal adjustment of control parameters in short‐term operational planning of power systems based on cost‐effective security solutions
Authors: Hashemi Sina , Lesani Hamid , Aghamohammadi Mohammad Reza
Published: December 2022

Interference amongst stability phenomena has been raising concerns due to the potential maladjustment of control parameters in large‐scale and interconnected power systems. In consequence of such interference, power system security is threatened. In order to preclude any inconsistency and ensure maximum security, a comprehensive study needs to be carried out in short‐term operational planning concentrating on the determination of an economic operating point with enhanced static and dynamic security. In this paper, an integrated approach with incorporation of voltage and rotor‐angle stabilities into the optimal operation of power system is proposed. This study is based on a many‐objective optimisation problem providing a cost‐effective security solution prior to real‐time operation whereby the operating point of power system is maximally secure and economic. The output of the proposed approach is a vector of adaptively adjusted control parameters consisting of terminal voltage and active power of generating units, reactive power of SVCs, and tap position of transformers. In addition, active power production and reactive power opportunity costs, static, and dynamic security criteria constitute the vector of objective functions with eight elements. The performance of the approach is assessed in several scenarios including various load patterns and different power limits of generators.
Rigid/flexible molecular structure‐induced polyimide aerogels with ultralow permittivity and thermal insulation properties
Authors: Dong Xiaodi , Wan Baoquan , Qiu Lin , Zheng Ming‐Sheng , Gao Jiefeng , Zha Jun‐Wei
Published: December 2022

A series of high‐performance linear and cross‐linked polyimide (PI) aerogels with different molecular structures have been successfully synthesised using the freeze‐drying process. In this study, the comprehensive regulation of microstructure, thermodynamic, thermal insulation and dielectric properties of PI aerogels are achieved by controlling the rigid/flexible structure and composition of polymerised monomers. The increase in rigidity of PI molecular structure could promote the formation of denser pores, which is beneficial to improve the thermodynamic and thermal insulation properties of aerogels. Notably, the cross‐linked PI aerogel prepared by introducing cross‐linking agent (tris(4‐aminophenyl) amine, [TPA]) into linear PI exhibits high thermal stability (Td5% > 560°C), excellent ultralow permittivity (εr = 1.31, f = 106 Hz) and good thermal insulation property (k = 0.056 W/m · K). This innovative strategy promotes the wider application of the cross‐linked polyimide aerogel in the field of integrated circuits and aerospace exploration.
A non‐isolated symmetrical design of voltage lift switched‐inductor boost converter with higher gain and low voltage stress across switches
Authors: Samiullah Md , Siddique Marif Daula , Iqbal Atif , Maroti Pandav Kiran , Banerjee Subrata
Published: December 2022

The DC–DC converters have to be characterized by high gain, low voltage stress, small size, and high efficiency for most of the applications including fuel cell and photovoltaic integration to microgrid. However, conventional, quadratic, interleaved, three‐level and cascaded boost converters are not able to satisfy the requirements. This letter proposes a new, non‐isolated DC–DC converter with switched‐capacitor and switched‐inductors that can achieve high‐gain, wide‐ranging input‐voltage, and low‐voltage stress across the switches. This paper analyses the operating principle, the design of component parameters and comparisons with other high‐gain converters. Experimental results for 22 V/400 V, 50 kHz prototype finally verifies the proposed converter with a voltage gain of 19.
Performance analysis of deep neural networks for direction of arrival estimation of multiple sources
Authors: Chen Min , Mao Xingpeng , Wang Xiuhong
Published: December 2022

Recently, popular machine learning algorithms have successfully been applied to the direction of arrival (DOA) estimation. An implementation of determination of DOA estimation is presented based on deep neural networks (DNNs) to reduce the computational complexity of traditional superresolution DOA estimation methods. The classical DOA estimation algorithms have limitations due to unforeseen effects, such as array perturbations. Instead of computing an inverse mapping based on the incomplete forward mapping that relates the signal directions to the array outputs, the DOA problem is approached as a mapping, which can be approximated using a suitable DNN trained with input output pairs. The neural network architecture is based on a multilayer perception and a group of parallel DNNs to perform detection and DOA estimation, respectively. Simulation results are performed to investigate the effect of network parameters on estimation accuracy so that they can be roughly determined in the case of one signal scenario. Based on a set of simulations and experimental measurements, the performance of the optimum network is also assessed and compared to that of the classical DOA estimation methods for multiple signals. It has been shown that the proposed method can not only achieve reasonably high DOA estimation accuracy, but also dramatically reduce the computational complexity and the memory space.
Evolution of dark gaps in barred galaxies
Authors: Aguerri J. A. L. , D’Onghia E. , Cuomo V. , Morelli L.
Published: December 2022

Context. Recent studies show that barred galaxies have a light deficit, called a dark gap (DG), in the direction of the bar minor axis with respect to the major axis. The properties of these DGs might be related to the properties of the bars and to the location of some resonances of the galaxies.

Aims. We have analyzed the evolution of the DGs properties in the barred galaxy of the GALAKOS simulation to compare them with those from real galaxies and infer conclusions about the evolutionary status of the bars.

Methods. The DGs were measured by using the bar and the interbar surface brightness profiles from the Fourier decomposition of the light of the galaxies. We characterized them by two parameters: the prominence of the DG (Δμmax), and its location in the galaxy (RDG).

Results. In the GALAKOS simulation, both Δμmax and RDG evolve with time. Thus, the DGs are more prominent and are located at larger radii as the bar evolves. In addition, RDG is smaller than the bar radius (Rb) at all time steps of the simulation, being always Rb/RDG >  1.2. About 90% of the real galaxies show Rb/RDG >  1.2 similar to the GALAKOS simulation. For these objects, the ratio of the corrotation radius (RCR) and the DG radius is RCR/RDG ≈ 1.8. This is similar to the expected ratio of the corrotation resonance (CR) and the ultraharmonic resonance (UHR) radius. This indicates a link between the DGs and the UHR of these galaxies. The remaining 10% of the galaxies show Rb/RDG <  1.2 and RCR/RDG ≈ 1. In these cases, the DG would be linked with the CR of the galaxy. We have found that the bar in GALAKOS, as well as real bars in galaxies, can be located in distinct places on the RCR/h − Rb/h plane based on the prominence of their DGs. In particular, galaxies with high values of Δμmax are located at RCR/h and Rb/h larger than 1.5. The simulated bar turned to be a slow rotator when Δμmax was larger than 0.8. When this occurs, RCR/h and Rb/h are larger than 2.0 and 1.5, respectively, for the GALAKOS bar.

Conclusions. The location of the DG seems to be a robust signature of the location of the galaxy resonances. In addition, the prominence of the DG could be used as indicators of the amount of angular momentum exchange by the bar and other galactic components. Galaxies with Δμmax >  0.8 would be candidates for slow bar rotators. In addition, flat bars would be more evolved or would have exchanged more angular momentum than exponential bars.
A ∼15 kpc outflow cone piercing through the halo of the blue compact metal-poor galaxy SBS 0335–052E
Authors: Herenz E. C. , Inoue J. , Salas H. , Koenigs B. , Moya-Sierralta C. , Cannon J. M. , Hayes M. , Papaderos P. , Östlin G. , Bik A. , Le Reste A. , Kusakabe H. , Monreal-Ibero A. , Puschnig J.
Published: December 2022

Context. Outflows from low-mass star-forming galaxies are a fundamental ingredient for models of galaxy evolution and cosmology. Despite seemingly favourable conditions for outflow formation in compact starbursting galaxies, convincing observational evidence for kiloparsec-scale outflows in such systems is scarce.

Aims. The onset of kiloparsec-scale ionised filaments in the halo of the metal-poor compact dwarf SBS 0335−052E was previously not linked to an outflow. In this paper we investigate whether these filaments provide evidence for an outflow.

Methods. We obtained new VLT/MUSE WFM and deep NRAO/VLA B-configuration 21 cm data of the galaxy. The MUSE data provide morphology, kinematics, and emission line ratios of Hβ/Hα and [O III]λ5007/Hα of the low surface-brightness filaments, while the VLA data deliver morphology and kinematics of the neutral gas in and around the system. Both datasets are used in concert for comparisons between the ionised and the neutral phase.

Results. We report the prolongation of a lacy filamentary ionised structure up to a projected distance of 16 kpc at SBHα = 1.5 × 10−18 erg s cm−2 arcsec−2. The filaments exhibit unusual low Hα/Hβ ≈ 2.4 and low [O III]/Hα ∼ 0.4 − 0.6 typical of diffuse ionised gas. They are spectrally narrow (∼20 km s−1) and exhibit no velocity sub-structure. The filaments extend outwards from the elongated H I halo. On small scales, the NHI peak is offset from the main star-forming sites. The morphology and kinematics of H I and H II reveal how star-formation-driven feedback interacts differently with the ionised and the neutral phase.

Conclusions. We reason that the filaments are a large-scale manifestation of star-formation- driven feedback, namely limb-brightened edges of a giant outflow cone that protrudes through the halo of this gas-rich system. A simple toy model of such a conical structure is found to be commensurable with the observations.
Absence of nuclear polycyclic aromatic hydrocarbon emission from a compact starburst: The case of the type-2 quasar Mrk 477
Authors: Ramos Almeida C. , Esparza-Arredondo D. , González-Martín O. , García-Bernete I. , Pereira-Santaella M. , Alonso-Herrero A. , Acosta-Pulido J. A. , Bessiere P. S. , Levenson N. A. , Tadhunter C. N. , Rigopoulou D. , Martínez-Paredes M. , Cazzoli S. , García-Lorenzo B.
Published: December 2022

Mrk 477 is the closest type-2 quasar, at a distance of 163 Mpc. This makes it an ideal laboratory for studying the interplay between nuclear activity and star formation with a great level of detail and signal-to-noise. In this Letter we present new mid-infrared (mid-IR) imaging and spectroscopic data with an angular resolution of 0.4″ (∼300 pc) obtained with the Gran Telescopio Canarias instrument CanariCam. TheN-band (8–13 μm) spectrum of the central ∼400 pc of the galaxy reveals [S IV]λ10.51 μm emission, but no 8.6 or 11.3 μm polycyclic aromatic hydrocarbon (PAH) features, which are commonly used as tracers of recent star formation. This is in stark contrast with the presence of a nuclear starburst of ∼300 pc in size, an age of 6 Myr, and a mass of 1.1×108 M⊙, as constrained from ultravioletHubbleSpace Telescope observations. Considering this, we argue that even the more resilient, neutral molecules that mainly produce the 11.3 μm PAH band are most likely being destroyed in the vicinity of the active nucleus despite the relatively large X-ray column density, logNH = 23.5 cm−2, and modest X-ray luminosity, 1.5×1043erg s−1. This highlights the importance of being cautious when using PAH features as star formation tracers in the central region of galaxies to evaluate the impact of feedback from active galactic nuclei.
A double perovskite BaCaZrMnO6: synthesis, microstructural dielectric, transport and optical properties
Authors: Parida Santosh K. , Meher Shashwati
Published: December 2022

In this communication, synthesis (solid-state reaction) and characterization of a double perovskite BaCaZrMnO6 are reported. The Williamson–Hall method is used to compute average crystallite and micro-lattice strain in the prepared sample after structural analysis with X-Pert High-Score software. The sample's microstructural characteristics were investigated using a scanning electron microscope (SEM), and compositional purity was determined using energy dispersive x-ray spectroscopy (EDX). The Raman spectrum displays all atomic modes of vibration, providing information on phase, polymorphic crystallinity, and molecular interaction, as well as confirming the presence of all constituent elements. The ultraviolet visible spectrum research gives good bandgap energy for several optoelectronic devices. The impedance parameters have been measured using an impedance analyzer in a wide range of frequencies (102–106 Hz) and temperatures from 25 °C to 500 °C. The dielectric versus temperature and frequency analysis validates the Maxwell–Wanger type of dielectric dispersion. The impedance spectroscopy investigation indicates that the sample exhibits a negative temperature coefficient of resistance (NTCR), whereas the modulus analysis verifies a non-Debye type of relaxation process. The results of the ac conductivity research confirm a thermally activated relaxation process. Nyquist plot analysis reveals the NTCR character, which is well supported by Cole–Cole plots. The resistance versus temperature analysis supports the NTC thermistor nature, but the polarization–electric field (P–E) loop analysis reveals the presence of ferroelectric character, making it a strong option for temperature sensors and ferroelectric-related devices.
Almost all Classical Theorems are Intuitionistic
Authors: Lescanne Pierre
Published: December 2022

Canonical expressions represent the implicative propositions (i.e., the propositions with only implications) up-to renaming of variables. Using a Monte-Carlo approach, we explore the model of canonical expressions in order to confirm the paradox that says thatasymptotically almost all classical theorems are intuitionistic. Actually we found that more than 96.6% of classical theorems are intuitionistic among propositions of size 100.
Optimization of the constructive system lining of metallic support structures in order to reduce deformation speeds of horizontal mining works executed in deep layer sedimentary rocks
Authors: Nistor Catalin Marian , Dumitrașcu Cristina Tamara , Radermacher Ladislau
Published: December 2022

Mining works executed in deep layer sedimentary rocks, are exposed to large deformation speeds during exploitation, because of rock pressure applied on the walls, the ceiling and bedrock of excavations. In this paper, we aim to find a solution for optimizing the constructive metallic structures, and subsequent linings, through the improvement of the transmission way of loads originating in rock pressure. According to Panet – Sulem support/rock interaction, there is a possibility of guiding rock pressure through constructive support system.
Aspects regarding the repair of electrical equipment designed for use in potentially explosive atmospheres
Authors: Moldovan Lucian , Magyari Mihai
Published: December 2022

The characteristics providing protection to explosion of equipment designed for use in potentially explosive atmospheres must be preserved during their entire period of life. Repairing is defined as the action to restore faulty equipment to its fully serviceable condition complying with the relevant standard (the standard to which the equipment or parts of equipment were originally designed). Repairing of explosion-proof equipment must be performed considering the prescription of the applicable harmonized standards and the specific type of protection(s) involved. This paper is focused on some particular aspects related to repairing of explosion-proof equipment.
Considerations on the type of protection increased safety “e”
Authors: Moldovan Lucian , Salasan Diana , Moldovan Clementina
Published: December 2022

Increased safety “e” represents a type of protection applied to electrical equipment or Ex Components in which additional measures are applied so as to give increased security against the possibility of excessive temperatures and against the occurrence of arcs and sparks. This type of protection cannot be applied to equipment producing electrical arcs and sparks in normal operation. This paper aims to underline some specific aspects regarding the equipment with type of protection increased safety.
Assessment of the technical conditions of Jieț waste dump in the context of its reintegration into the surrounding landscape
Authors: Lazăr Maria , Faur Florin , Apostu Izabela-Maria , Rada Constantin
Published: December 2022

Coal mining activity in Jiu Valley is approaching, faster than expected a few years ago, to its end and one of the main directions for transforming the area (while ensuring its sustainability) is the development of tourism. Under these conditions, a problem that has remained partially unresolved is related to the integration of the former mining perimeters, especially the waste dumps, into the surrounding landscape. Such an approach must always start from a thorough check of the technical condition of these artificial earth constructions. For this reason the stability of the dumps in the Jiu Valley is considered to be an important issue, considering that possible failures endanger both the natural and the anthropic environment. In the case of the waste dump considered as a case study, because several years have passed since the last sterile rocks were deposited and since stability studies were performed, a new such study was considered necessary (given that the deposited rocks underwent certain changes: compaction, mechanical disintegration, chemical alteration, etc.). This paper presents the results of the stability analyzes carried out during 2022 and a series of conclusions regarding the limits within which the geometric elements must be framed so as to ensure a good stability reserve and thus allow the ecological restoration works to begin.
A new academic management vision for the University of Petrosani
Authors: Edelhauser Eduard , Lupu-Dima Lucian
Published: December 2022

We face a period of profound changes in our society, changes that will have effects on education. Today, universities abroad focus on practical things, while in Romania the basis remains the theory. The West European or American higher education institution (HEI) emphasize on dual specializations, internships, business partnerships, and encourage creativity. Abroad, students can get substantial scholarships or have the guarantee of a well-paid job after graduation. In this context, can we give a new face and adapt the higher education system in Romania, in particular in the case of the University of Petrosani, by implementing the hybrid education and developing new applied specializations in collaboration with business partners? We will try to give the answer to this question in this paper.
Acoustic zoning for the safe use of explosives in the open pit
Authors: Gheorghiosu Edward , Laszlo Robert , Kovacs Attila , Ilici Ștefan , Mihai Sorin
Published: December 2022

Rockfall in open pit mining using explosives is the most method of operation. Also, in addition to the technical and economic advantages, this method of extraction produces effects that can have a negative impact in the area near the quarry. The effects of the blasting are such as seismic waves that produce vibrations, air overpressure (noise), rock throws and toxic gases. If the intensity and extent of these effects are not properly anticipated and assessed, serious consequences can occur to people, civil / industrial buildings, the environment, thus affecting the health of the population and the stability / integrity of buildings / slopes in the vicinity of mining operations. The paper describes methods to assess the noise produced by the detonation of explosives for civilian use when removing rocks in the quarry, with the aim of ensuring a degree of disturbance acceptable to the population as well as for the protection of civil / industrial objectives in the area of mining. The obtained results are extracted from a research study carried out for the opening in operation of a new mining deposit, applying calculations and theoretical interpretations having as reference the conditions established for the development of the blasting works.
Process for Stabilization of Heavy Metals From Solid Waste Resulting in the Process of Acid Mining Water Treatment
Authors: Dunca Emilia-Cornelia , Sârbu Romulus-Iosif , Ciolea Daniela-Ionela
Published: December 2022

The technology and the installation of acid mine water treatment by bioaccumulation, is realized in three distinct stages, namely: the primary stage, consisting of raw water capture, treatment with neutralizing and coagulating chemical reagents, solid phase settling and sludge treatment, [I, II , IV, V], the secondary stage, consisting in the removal of heavy metals and the neutralization of acidity by passing the effluent of the first stage, through a battery of phytoextraction cells, [III],using for this purpose truncated cells. In the tertiary stage, the stabilization of heavy metals in the thickened clearing and the aerial part of the sedge takes place.
Increasing the quality of medical services by streamlining the human resources management
Authors: Stoi Daniela , Edelhauser Eduard
Published: December 2022

The most affected field of the society by the two-year COVID-19 pandemic was undoubtedly the medical one. An analysis of the most important changes that have taken place in this field, from the perspective of human resources in the medical sector, is the main objective of the research. A first step in this complex analysis, however, is to identify the situation of human resources in the medical sector from the perspective of its satisfaction in the pre-pandemic period. The present paper aims to highlight the situation existing in the Romanian medical system prior to the pandemic from the perspective of employee satisfaction, through a research conducted in a medium-sized hospital in Romania. The research method used was the survey, with 144 respondents, represented by the employees of the hospital, questionnaire applied in 2018 and 2019 years. One of the conclusions of this paper is that improving employee satisfaction from the perspective of human resources management in the organization studied, increase the quality of medical services offered to the patients, and therefore increase patient satisfaction.
Role of EU and non-EU universities in achieving environmental sustainability
Authors: Karaeva Anzhelika , Ionescu Gabriela , Cioca Lucian Ionel , Tolkou Athanasia
Published: December 2022

At present, the principles of sustainable development are being implemented in almost all economy sectors whereas one of the key drivers of the transition to a new concept is higher education system also. The inclusion of special academic disciplines on sustainable development, the implementation of environmental protection measures, financial support for research in the field of environmental sciences, campuses landscape – all these stimulates the process of transition to a concept of sustainable development. In addition, higher education makes it possible to form an ecological worldview among the younger generation that is an effective tool in achieving sustainable development goals (SDGs). University graduates who understand the need to achieve the SDGs and provide environmental protection, lead an eco-friendlier lifestyle and pass on the knowledge they have gained to their children or other family members. The purpose of this study is to analyze the relationship between the involved activity of universities in the field of sustainable development and the implementation of large-scale government programs to achieve environmental sustainability. The study will examine the experience of Eu and non-EU universities and state environmental protection programs. The results obtained allow us to conclude about the correlation between educational activities in the higher education system and achievements at the state level of environmental sustainability.
Exploring the Possibilities of Using Project Management Methodologies in the 21st Century Education
Authors: Ionică Andreea Cristina , Leba Monica , Saad Ahmad Fuad
Published: December 2022

One of the reasons why education in the 21st century is different, is the use of technology to enhance learning. In this context, proper project management methodology that individualize learning and makes students take responsibility for their own learning, reflect and evaluate their own learning processes, must be implemented. The educational process is approached as a result of the project management methodology considering previous experiences regarding education projects and exploring the possibilities of adapting to the dynamics of the digital age. A successful education process delivers effective learning being designed in order to enhance it. In the context of the research, Web 2.0 tools proved to be useful educational tools with significant results especially when integrating elements of Google Analytics and Gamification. So, the article proposes a framework for integrating a mixture of Web 2.0, Google Analytics and Gamification in the educational process.
Using virtual instrumentation in the application study of electronic devices
Authors: Pătrășcoiu Nicolae , Rus Cosmin , Negru Nicoleta , Roșulescu Cecilia
Published: December 2022

Continuous technological developments require proper training of future specialists through the use of modern training systems. This paper presented in detail both hardware and software structures in a laboratory stand for interactive training of future professionals in the fields related to using electronic devices. Virtual instrumentation is the basics of these applications in terms of data acquisition, processing, and display in a form as explicit and easy to understand of the results. The entire system was created using National Instruments equipment to generate the input stimulus signals to generate both input signals and receive response signals. For various electronic circuits or devices, software applications were created in the LabView graphics development environment. Builds in the form of interactive applications the virtual instruments offer the opportunity for future professionals to benefit from a complete training starting from studying the theoretical part of laboratory work, visualizing the implementation schemes, and making measurements that are then used to make different analyses of results.
Exploiting multimedia technologies in education, research, and university-community projects
Authors: Draghici Anca , Dermol Valerij , Stankeviciute Zivile
Published: December 2022

The pandemic has led to the acceleration of the digital transformation of all university activity. Some users/university staff were better prepared for this, but others need support and training in the development of digital skills. Increasing the efficiency and effectiveness of digitized activities (administrative, educational, research, university marketing, communication, and community involvement, with business or industrial partners) require increasing concerns for the university's human resources to have the necessary knowledge of operation. Moreover, our students are from generation Z, Millennials and can be stimulated in learning, interaction, and communication with the help of digital means, multimedia technologies and social media. We are witnessing a radical change in the way communication takes place in universities and within its extended community, with its various stakeholders. In this dynamic context we have built and present the way to extend the digital/multimedia competencies of university staff (administrative, teaching, research staff, etc.) with the support of an international community associated with the Erasmus+ project: “Multimedia Competencies for University Staff to Empower University - Community Collaborations” (2020-1-RO01- KA203-080399).
Editorial
Authors: Huber Gerhard
Published: December 2022

Liebe Leserinnen und Leser,

das „Journal of the American Medical Association“, eines der
Flaggschiffe der Medizinwelt, veröffentlicht regelmäßig eine
Liste der meistgelesenen Artikel. Im Jahr 2019, das letzte Jahr ohne Corona, finden
sich in den Top Ten drei Artikel mit dem Thema Bewegung.
Digitalisierung im DVGS
Authors: Streber René , Diefenbach Karolin , Steffen Martin , Peters Stefan
Published: December 2022

Der Megatrend der Digitalisierung verändert viele Bereiche des
täglichen Lebens. Er verändert auch das deutsche Gesundheitswesen,
bringt vielfältige neue Leistungen und Gesundheitsangebote sowie
Begrifflichkeiten mit sich, während gleichzeitig ein Handlungsbedarf zur
Förderung der digitalen Gesundheitskompetenz der Bevölkerung
besteht.

Diese Entwicklungen haben auch einen prägenden Einfluss auf den DVGS. Zur
Qualitätssicherung und Professionalisierung und im Einklang mit den
satzungsgemäßen Zielen wurde dieses Themenfeld fest in den
Verbandsstrukturen verankert. In diesem Zusammenhang wird ein strukturiertes
Vorgehen zur Planung, Steuerung und Evaluation der Digitalisierung des Verbands
entwickelt (Digitalisierungsstrategie).

Der vorliegende Artikel gibt einen Überblick über wesentliche
Maßnahmen dieser Digitalisierungsstrategie in Bezug auf die bedeutenden
Tätigkeitsbereiche des DVGS wie das Lehrgangswesen, Betriebliche
Gesundheitsförderung, Prävention, Gremienarbeit und die
sport-/bewegungstherapeutische Versorgung. Weitere
Digitalisierungsmaßnahmen (etwa in der Mitgliederverwaltung und im
Mitgliederservice) sind ab dem kommenden Jahr geplant.