Miracle-dz/UniFAR-FTUs huggingface dataset:
Redox flow batteries: role in modern electric power industry and comparative characteristics of the main types

In recent years, the key principles of the electric power industry have radically changed and the number of studies on the development of devices for electrical energy storage in a different form such as mechanical or chemical energy has rapidly increased. This review gives a brief description of these devices. The attention is focused on redox flow batteries (RFBs), a promising type of energy storage devices capable of efficiently operating in distributed power grids, in order to eliminate the imbalance between the time-varying electricity production by ‘unconventional sources’ and electricity consumption. At the design level, RFBs combine the principles of fuel cells and chemical energy sources with solid electroactive materials: transitions between electrical and chemical forms of energy in these devices occur upon oxidation and reduction of redox-active electrolytes, which are stored in separate tanks and pumped into the electrode compartments of the membrane electrode assembly (MEA) separated by a semi-permeable membrane. This approach ensures an important advantage of these devices over other types of chemical energy sources, that is, the possibility of independent scaling of the energy storage capacity and power characteristics of the system. This review provides a systematic description of the main types of RFBs and analysis of their fundamental benefits and drawbacks, which determine the prospects for practical applications of RFBs. The bibliography includes 149 references.
Characterization of Leading Dysregulated Plasma-Proteome Associated Genes in Patients with Gastro-Esophageal Cancers.

Background: Gastro-esophageal cancers are one of the major causes of cancer-related death in the world. There is a need for novel biomarkers in the management of gastro-esophageal cancers to identify new therapeutic targets and to yield predictive response to the available therapies. Our study aims to identify leading genes that are dysregulated (upregulated or downregulated) in patients with gastro-esophageal cancers.Methods: We examined gene expression data for those genes whose protein products can be detected in the plasma in 600 independent tumor samples and 46 matching normal tissue samples using the Cancer Genome Atlas (TCGA) to identify leading genes that are dysregulated in patients with gastro-esophageal cancers. Non-parametric Mann-Whitney-U test was used to evaluate differential expression of genes using a cut-off of P< 0.05. Results: The comparison between tumors sample and healthy tissue showed BIRC5 (p=2.61 E-08), APOC2 (p=3.23E-08), CENPF (p=4.38E-08), STMN1 (p=5.74E-08), and HNRPC (p=8.21E-08) were the leading genes significantly overexpressed in esophageal cancer whereas CST1 (p=3.97 E-21), INHBA (p=9.22E-20), ACAN (p=1.08E-19), HSP90AB1 (p=2.62E-19), and HSPD1 (p=3.91E-19) were the leading genes that were overexpressed in stomach cancer. Conversely, C16orf89 (9.78E-08), AR (1.01E-07), CKB (1.17E-07), ADH1B (1.79E-07), and NCAM1 (2.15E-07) were the leading gene that were significantly downregulated in esophageal cancer whereas GPX3 (1.65E-19), CLEC3B (5.70E-19), CFD (5.68E-18), GSN (4.5IE-17), and CCL14 (1.12E-16) were significantly downregulated in stomach cancer. Furthermore, Stage-based examination showed stage-specific differential expression of various genes as well as stage-wise increasing or decreasing up-regulation or down-regulation of selected genes, respectively. Conclusions: The present study identified leading upregulated and downregulated genes in gastro-esophageal cancers that can be detected in the plasma proteome. These genes have potential to become diagnostic and therapeutic biomarkers for early detection of cancer, recurrence following surgery and for development of targeted-treatment.
Study of microstructure and tribological behaviour of spray cast high silicon hypereutectic Al-Si alloy

ABSTRACT This paper presents the study of the microstructure, wear properties of spray-deposited and hot compressed Al-35Si and Al-45Si alloys. The microstructure analysis and wear mechanisms of spray formed and as cast alloys were studied by using optical and scanning electron microscope (SEM). The microstructure of the spray-formed alloys showed fine particulate of primary Si and eutectic phases distributed uniformly in the equiaxed Al- matrix. Microstructural refinement was further increased in the hot-compressed alloys. Hardness, dry friction and wear tests were performed on spray formed alloys and compared with as cast alloys. Friction coefficient (COF) and wear rate of the alloys were measured under different applied loads (10–50 N) and sliding velocities of 1 and 1.5 m/s at constant sliding distance of 5000 m. The results indicated that the hardness and wear resistance of spray formed and hot-pressed alloys were considerably high over that of the as cast alloys. The improvements in hardness and wear resistance of spray-formed alloys were mainly attributed to morphology, size and distribution of Si particles induced during spray deposition process. Analysis of worn surfaces by SEM showed dominant wear mechanism of spray-formed alloy was mainly abrasive wear and oxidation wear.
Floristic Diversity and Distribution Patterns Along an Elevational Gradient in the Northern Part of the Ardabil Province Rangelands, Iran

This study evaluated the distribution pattern, species diversity index (richness, diversity, and evenness), importance value index (IVI), and family importance value (FIV) of all vascular plant species and various plant community life-form spectra along the Moghan Plain–Sabalan Mountain rangelands, Ardabil province, Iran. Sampling was conducted in 11 elevation classes at 300-m elevation intervals (100–3300 masl). In each elevation interval, 30 quadrats (1 × 1 m) were laid to collect vegetation data. Different vegetation attributes (density, frequency, and canopy cover) were measured for each quadrat. Regression analyses were employed to explore the interrelation of elevation with diversity, species richness, evenness, and IVI. In total, 251 species (143 genera, 38 families) were recorded across the study area. Poaceae, Fabaceae, and Asteraceae were most dominant families according to the FIV. According to the IVI, Poa bulbosa, Festuca ovina, Medicago minima, and Artemisia austriaca were the dominant species along the elevation gradient. Total diversity and species richness showed a normal distribution along the elevation gradient. Overall, hemicryptophytes and therophytes were the dominant life forms, while chamaephytes and geophytes were less frequent forms. The life-form patterns changed along elevation gradients. While the diversity and species richness values of therophytes and chamaephytes showed a decreasing trend, hemicryptophytes increased with increasing elevation. Diversity, species richness, and evenness of geophytes were not significantly different across the elevation gradient. Class I (highly palatable) and class II (mostly palatable) species declined as the elevation increased and then increased, while class III (hardly or unpalatable) species showed a reverse trend. The difference in the abundance and distribution of species in elevation classes could be related to resource availability, overlap of habitats, habitat patchiness, land area, degree of human influence, or biotic disturbances.
A quadratically convergent multiconfiguration–self‐consistent field method with simultaneous optimization of orbitals and CI coefficients

A quadratically convergent MC–SCF procedure is described which is based on the direct minimization of the energy. In comparison to the Newton–Raphson technique, which has previously been applied by several authors for orbital optimization, the convergence radius is much improved by taking into account in the energy expansion those parts of third and higher order terms which account exactly for the orthonormality constraints imposed on the orbitals. The nonlinear equations which define the improved orbitals are solved iteratively by a simple adaption of the Gauss–Seidel method. The coefficients of the configuration expansion can be optimized simultaneously with the orbitals, a necessary requirement for over‐all quadratic convergence. The removal of redundant variables as well as useful approximations for the optimization of core orbitals are discussed. The convergence of the method is demonstrated to be much superior to classical Fock operator techniques and MC–SCF methods which are based on the generalize.
Band-gap transition induced by interlayer van der Waals interaction in MoS 2

S. W. Han,1 Hyuksang Kwon,2 Seong Keun Kim,2 Sunmin Ryu,3 Won Seok Yun,1 D. H. Kim,4 J. H. Hwang,4 J.-S. Kang,4 J. Baik,5 H. J. Shin,5 and S. C. Hong1,* 1Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749, Korea 2Deparment of Chemistry and Department of Biophysics and Chemical Biology, Seoul National University, Seoul 151-747, Korea 3Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi 446-701, Korea 4Department of Physics, The Catholic University of Korea, Bucheon 420-743, Korea 5Pohang Accelerator Laboratory (PAL), POSTECH, Pohang 790-784, Korea (Received 12 April 2011; revised manuscript received 16 May 2011; published 6 July 2011)
Dispersed fluorescence spectra of single molecules of pentacene in p- terphenyl

Dispersed fluorescence spectra of single molecules of pentacene in p-terphenyl at 1.8 K have been recorded by tuning the excitation laser to single-molecule features at the long-wavelength edge of the fluorescence excitation spectrum. The main vibrational features in these spectra are similar in frequency and intensity to those obtained from the bulk sample with excitation near the center of the origin band, indicating that the absorption features in the wings of the inhomogeneous distribution probably arise from normal pentacene molecules to within the resolution of this experiment. Prospects for the development of this technique are discussed
How Does Initial Teacher Education Research Frame the Challenge of Preparing Future Teachers for Student Diversity in Schools? A Systematic Review of Literature

Teachers consistently identify working with “diverse learners” as challenging. This raises questions about how teacher educators conceptualize and enact preparation of teachers for heterogeneous populations. This article provides a systematic review of literature relating to both “teacher education” and “diverse learners,” to identify knowledge claims regarding the way this “problem” and possible “solutions” should be framed. Analyzing 209 peer-reviewed journal articles (2009–2019), the article identifies groups most frequently described as diverse, three qualitatively different clusters of claims regarding how teachers can be prepared for diversity, and factors identified as constraining preparation. Analysis reveals a literature broad in focus—referencing many groups—but shallow in depth. The majority describe strategies for teaching about or catering to diversity with only few considering teaching for diversity. There is also limited engagement with specialist literature relating to concepts such as gender or race and little attention to teacher educators’ own knowledge. The article concludes with implications for teacher educators, arguing for enhanced critical epistemic reflexivity.
OBTAINING SCARLET SAGE (SALVIA COCCINEA) EXTRACT THROUGH HOMOGENIZER- AND ULTRASOUND-ASSISTED EXTRACTION METHODS

Scarlet sage (Salvia coccinea) leaves were extracted with water, ethanol, methanol, and aqueous mixtures of those solvents by homogenizer-assisted extraction (HAE) and ultrasound-assisted extraction (UAE) methods, which are novel technologies used for this purpose. The best results were compared with those obtained by the conventional Soxhlet method (SM). Total phenolic content was expressed in gallic acid equivalent (GAE) per g of dried leaf. Free radical scavenging activity for the antioxidant capacity was tested by 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical. The greatest amount of extraction was achieved by pure water with the value of 368.87 mg/g dried matter and the highest total phenolic content was observed by 100% methanol as 43.18 mg-GAE/g dried matter, both obtained by the HAE method. The mint leaves extracted by SM exhibited the highest antioxidant capacity, with a value of 90.55% for inhibition of DPPH radical.
Direct Electrochemical Enzyme Electron Transfer on Electrodes Modified by Self-Assembled Molecular Monolayers

Self-assembled molecular monolayers (SAMs) have long been recognized as crucial “bridges” between redox enzymes and solid electrode surfaces, on which the enzymes undergo direct electron transfer (DET)—for example, in enzymatic biofuel cells (EBFCs) and biosensors. SAMs possess a wide range of terminal groups that enable productive enzyme adsorption and fine-tuning in favorable orientations on the electrode. The tunneling distance and SAM chain length, and the contacting terminal SAM groups, are the most significant controlling factors in DET-type bioelectrocatalysis. In particular, SAM-modified nanostructured electrode materials have recently been extensively explored to improve the catalytic activity and stability of redox proteins immobilized on electrochemical surfaces. In this report, we present an overview of recent investigations of electrochemical enzyme DET processes on SAMs with a focus on single-crystal and nanoporous gold electrodes. Specifically, we consider the preparation and characterization methods of SAMs, as well as SAM applications in promoting interfacial electrochemical electron transfer of redox proteins and enzymes. The strategic selection of SAMs to accord with the properties of the core redox protein/enzymes is also highlighted.
The effect of self-management on the health-related quality of life in hypertensive patients in Xiamen, China

Background: A low HRQOL can be a risk factor for future cardiovascular events in patients with hypertension. Therefore, HRQOL should receive attention and be improved in the treatment of hypertension. The purpose of this study was to investigate if the association between treatment groups and Health-Related Quality of Life (HRQOL) of hypertension mediated by self-management, and to determine which factors of hypertension self-management influenced HRQOL. Methods: Hypertensive patients were selected by multi-stage stratified samping from “1+1+N” Physicians intervention (PI) group and the conventional management (CM) group in 5 communities of Xiamen, China. Patients were cross-sectionally assessed by validated self-reports using self-management Behavior Rating Scale and Quality of Life Instruments for Hypertension. A structural equation modeling (SEM) and a path analytic model were used to assess if the association between treatment groups and HRQOL was mediated by self-management. Results: A total of 1207 patients were included, of whom 48.55% were in the PI group. The average score of the HRQOL scale was 86.68, and the average score of the PI group was higher than the CM group (87.35 vs 86.04, respectively). Similar findings were observed for the self-management scale, in which the average score of the PI group was higher than the CM group (76.32 vs 72.00, respectively). Patients in the PI group had higher levels of self-management compared to the CM group except for management of emotion. SEM showed that the association between treatment groups and HRQOL was significantly mediated by self-management (a*b, 95% confidence intervals CI: 0.02,0.07) and that the single mediator (self-management) model explained 76.67% of the intervention effect. In the multivariable mediation model, the association between treatment groups and HRQOL was significantly mediated by management of medication adherence, sport and diet.Conclusions: The findings presented good evidence supporting that treatment groups are linked to HRQOL of hypertension via self-management. Specifically, management of medication adherence, sport, diet, and emotion are important for improving HRQOL.
A novel single‐body system for direct‐drive wave energy converter

Ocean wave energy has played a key role of the renewable energy. This study presents a novel single‐buoy wave energy converter (WEC) with directly driven power take‐off (PTO) system to overcome some difficulties that the PTO system in the conventional single‐body direct‐drive WEC (DD‐WEC) is fully submerged under water and far away from the water surface. A rectangular buoy, a direct‐drive PTO system with Halbach permanent magnet linear generator (HPMLG), and slide rails form the chief institutions of the WEC. The translator of the HPMLG is installed on the lateral surface of buoy, and the stator is mounted on the seacoast or the boats and ships. While wave drives the floating buoy to move, a relative movement between the translator and the stator of the HPMLG is caused. Then, the relative movement generates electricity. To explore theoretically its feasibility, the dynamics of the wave and the floating buoy is analyzed in detail. Thus, the structural parameters are analyzed and determined, and load performance is described. Furthermore, the finite element method (FEM) is used to conduct the performance evaluation of the HPMLG and traditional permanent magnet linear generator (TPMLG). The generated power of the HPMLG is 19% higher than the TPMLG under the same conditions. Lastly, Experiments of a fabricated prototype are conducted in the wave tank. Experimental results show that the prototype in this paper decreases these existing problems and is suitable for wave energy generation.
Adatvédelem a foglalkoztatásban. Mit mutat az esetjog?

A digitalizáció és a globalizáció összefonódása következtében soha nem látott mértékben került összeütközésbe egymással a munkáltató információhoz való joga és a munkavállaló magánélethez fűződő joga. Ezzel egyidőben olyan mennyiségű és jelentőségű új jogforrás, állásfoglalás és hatósági határozat született Európában és Magyarországon, amelyeket érdemes alaposabban górcső alá venni. A tanulmány fő célja megvizsgálni az Európai Unió Bírósága, az Emberi Jogok Európai Bírósága, valamint a magyar Kúria és a Nemzeti Adatvédelmi és Információszabadság Hatóság foglalkoztatást érintő esetjogát a szervezetek toborzás- és kiválasztási gyakorlata, valamint a munkavállalók munkaviszonnyal kapcsolatos ellenőrzése kapcsán. A tanulmány a dokumentumelemzés módszerével döntéseket elemez azért, hogy segítse az iránymutatást az állásra jelentkezők, illetve a munkavállalók magánszférájához fűződő joga és a munkáltató információhoz való joga között húzódó határvonal pontosabb megismeréséhez.
Electrochemical Evaluation of Laccase Activity in Must

As laccase (produced by Botrytis cinerea) can significantly alter the properties of wine, winemakers frequently use commercially available colorimetric kits and spectrophotometers to measure the activity of this enzyme in grapes, must and wine. Although the used kits are based on electrochemically active substrates (such as syringaldazine and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), ABTS), the electrochemical determination of laccase activity as an alternative to the colorimetric determination was not thoroughly investigated up to now. Therefore, in the present work, we explored the electrochemical determination of laccase activity. Laccase activity measurements were carried out using either carbon fiber microelectrodes or screen-printed electrodes as working electrodes, either syringaldazine or ABTS as the electrochemically active laccase substrate, and either cyclic voltammetry or constant potential amperometry as the electrochemical method. The best performing approach, which combines ABTS, screen-printed gold electrodes, and constant potential amperometry, allowed identifying laccase positive must sample (i.e., must samples with › 3U/mL laccase) in about 5 min.
A Relay Selection Protocol for UAV-Assisted VANETs

In this paper, we investigate the relay selection problem for the unmanned aerial vehicle (UAV)-assisted vehicular ad-hoc networks (VANETs). For the considered network, we first model and analyze the link quality of service (LQoS) from the source node (SN) to the neighbor node and the node forward capacity (NFC) from the neighbor node to the destination node (DN). Then, the relay selection problem is formulated as a multi-objective optimization problem by jointly considering the LQoS and the NFC. Afterward, we decompose the problem into two subproblems and propose a relay selection protocol with the storage-carry-forward (SCF) method. Moreover, we define a utility function with the node encounter frequency (NEF) and the message time-to-live (TTL) taken into account, based on which a redundant copy-deleting approach is devised. Furthermore, we analyze the security of the designed protocol. Finally, the simulation results demonstrate that the proposed relay selection protocol can improve the message delivery ratio, reduce the average end-to-end delay, and limit the overhead.
Modelling and simulation methods for microstructured optical fibers

ABSTRACT In this paper, we present guidelines for the simulation of microstructured optical fibers (MOFs), for finding their guided modes and their nonlinear and dispersive characteristics. For the case of hollow-core MOFs, we also present guidelines for studying their photonic bands. Then, we review the results of nonlinear pulse propagation on those MOFs, showing how some of them are particularly well suited to be used as efficient supercontinuum or UV light sources.
Panax Notoginseng Saponins Prevent Bone Loss by Promoting Angiogenesis in an Osteoporotic Mouse Model

With the aging of the population and the extension of life expectancy, osteoporosis is becoming a global epidemic. Although there are several drugs used to treat osteoporosis in clinical practice, such as parathyroid hormone or bisphosphonates, they all have some serious side effects. Therefore, a safer drug is called for osteoporosis, especially for the prevention in the early stage of the disease, not only the treatment in the later stage. Panax notoginseng saponin (PNS), a traditional Chinese herb, has been used as anti-ischemic drug due to its function on improving vascular circulation. In order to verify whether Panax notoginseng saponins (PNS) could be used to prevent osteoporosis, ovariectomy (OVX) was induced in female C57BL/C6J mice, followed by orally administration with 40 mg/kg/d, 80 mg/kg/d, and 160 mg/kg/d of three different dosages of PNS for 9 weeks. Serum biochemical analysis, micro-CT, histological evaluation, and immunostaining of markers of osteogenesis and angiogenesis were performed in the sham, osteoporotic (OVX), and treatment (OVX+PNS) groups. Micro-CT and histological evaluation showed that compared to sham group, the bone mass of OVX group reduced significantly, while it was significantly restored in the moderate-dose PNS (40 mg/kg and 80 mg/kg) treatment groups. The expression of CD31 and osteocalcin (OCN) in the bone tissue of treatment group also increased, suggesting that PNS activated osteogenesis and angiogenesis, which subsequently increased the bone mass. These results confirmed the potential function of PNS on the prevention of osteoporosis. However, in the high dose of PNS (160 mg/kg) group, the antiosteoportic effect had been eliminated, which also suggested the importance of proper dose of PNS for the prevention and treatment of osteoporosis in postmenopausal women.