Miracle-dz/UniFAR-FTUs huggingface dataset:
Polytypism of Compounds with the General Formula Cs{Al2[TP6O20]} (T = B, Al): OD (Order-Disorder) Description, Topological Features, and DFT-Calculations

The crystal structures of compounds with the general formula Cs{[6]Al2[[4]TP6O20]} (where T = Al, B) display order-disorder (OD) character and can be described using the same OD groupoid family. Their structures are built up by two kinds of nonpolar layers, with the layer symmetries Pc(n)2 (L2n+1-type) and Pc(a)m (L2n-type) (category IV). Layers of both types (L2n and L2n+1) alternate along the b direction and have common translation vectors a and c (a ~ 10.0 Å, c ~ 12.0 Å). All ordered polytypes as well as disordered structures can be obtained using the following partial symmetry operators that may be active in the L2n type layer: the 21 screw axis parallel to c [– – 21] or inversion centers and the 21 screw axis parallel to a [21 – –]. Different sequences of operators active in the L2n type layer ([– – 21] screw axes or inversion centers and [21 – –] screw axes) define the formation of multilayered structures with the increased b parameter, which are considered as non-MDO polytypes. The microporous heteropolyhedral MT-frameworks are suitable for the migration of small cations such as Li+, Na+ Ag+. Compounds with the general formula Rb{[6]M3+[[4]T3+P6O20]} (M = Al, Ga; T = Al, Ga) are based on heteropolyhedral MT-frameworks with the same stoichiometry as in Cs{[6]Al2[[4]TP6O20]} (where T = Al, B). It was found that all the frameworks have common natural tilings, which indicate the close relationships of the two families of compounds. The conclusions are supported by the DFT calculation data.
Microporous Polypyrrole‐Coated Graphene Foam for High‐Performance Multifunctional Sensors and Flexible Supercapacitors

This study reports on the fabrication of pressure/temperature/strain sensors and all‐solid‐state flexible supercapacitors using only polydimethylsiloxane coated microporous polypyrrole/graphene foam composite (PDMS/PPy/GF) as a common material. A dual‐mode sensor is designed with PDMS/PPy/GF, which measures pressure and temperature with the changes of current and voltage, respectively, without interference to each other. The fabricated dual‐mode sensor shows high sensitivity, fast response/recovery, and high durability during 10 000 cycles of pressure loading. The pressure is estimated using the thermoelectric voltage induced by simultaneous increase in temperature caused by a finger touch on the sensor. Additionally, a resistor‐type strain sensor fabricated using the same PDMS/PPy/GF could detect the strain up to 50%. Flexible, high performance supercapacitor used as a power supply is fabricated with electrodes of PPy/GF for its high surface area and pseudocapacitance. Furthermore, an integrated system of such fabricated multifunctional sensors and a supercapacitor on a skin‐attachable flexible substrate using liquid–metal interconnections operates well, whereas sensors are driven by the power of the supercapacitor. This study clearly demonstrates that the appropriate choice of a single functional material enables fabrication of active multifunctional sensors for pressure, temperature, and strain, as well as the supercapacitor, that could be used in wirelessly powered wearable devices.
Observer’s congruent response when boss put their colleague’s down, A moderated mediation mechanism

: Prior research mostly covers the instigator and target perspective of workplace incivility and overlooked the third parties ’ reaction. The current research aims to examine the congruent social emotion of the observer after witnessing the incivility toward coworkers with the lens of affective event theory. It also examines the behavioral response of the observer due to that social emotion. Through the time-lagged survey conducted in the service industry, the results showed that vicarious workplace incivility was positively associated with empathy towards a coworker, that emotion is further positively associated with helping behavior towards victims. This relationship is moderated by gender, such that females are more sensitive towards incivility. Third parties experience positive social emotions of empathy and try to buffer the situation through helping behavior. Our findings try to examine the interpersonal, target-directed outcomes of vicarious workplace incivility. The results of the study contribute to both theory and practice.
Differences between Students of Jewish and Arab Origin in Reasons for Deciding to Study

Academic studies play a central role in determining socioeconomic status in Western society. Nevertheless, most research had focused on factors of academic achievement and paid less attention to factors of actual registration for academic studies. Reasons for choosing to enrol in academic studies are particularly important for understanding majority and minority group differences in rates of registration for such studies and helping promote ethnic groups. The present research, conducted with undergraduate students in Israel, examined differences between students of Jewish and Arab origin in terms of their reasons for undertaking studies. First, qualitative interviews were held with 50 students from the two groups about their reasons for choosing to study. Based on thematic analysis of the interviews, a quantitative questionnaire was developed. It was administered to 367 students from the two groups. The data indicate several differences between the groups, but also reveal opposite directions of correlations in the two groups, corresponding with different family situations. Some possible explanations are suggested for the associations of the groups, family status, and reasons for studying, and the theoretical and methodological implications of these associations are discussed.
Surface Acoustic Wave Biosensor with Laser-Deposited Gold Layer Having Controlled Porosity

Laser-deposited gold immobilization layers having different porosities were incorporated into love wave surface acoustic wave sensors (LW-SAWs). Variation of pulsed laser deposition parameters allows good control of the gold film morphology. Biosensors with various gold film porosities were tested using the biotin–avidin reaction. Control of the Au layer morphology is important since the biotin and avidin layer morphologies closely follow that of the gold. The response of the sensors to biotin/avidin, which is a good indicator of biosensor performance, is improved when the gold layer has increased porosity. Given the sizes of the proteins, the laser-deposited porous gold interfaces have optimal pore dimensions to ensure protein stability.
Investigation on the effect of metal foam properties on the PCM melting performance subjected to various heat fluxes

The purpose of this paper is to analyze the effects of structural and mechanical characteristics of metal foam on the melting behavior of phase change materials under the influence of different heat fluxes. To this aim, a two dimensional numerical model considering the non-equilibrium thermal factor, non-Darcy effect and local natural convection was used. The governing equations of PCM and metal foam are discretized using a ﬁnite volume method with a collocated grid arrangement. To simulate the melting of PCM, the enthalpy-porosity method is applied which computes the liquid fraction at each iteration, based on the enthalpy balance. The effect of metal foam characteristics (porosity, pores size and base material) and wall heat flux on the PCM melting time were investigated. The result showed that for both wall heat fluxes (4000 W m-2 and 8000 W m-2), foam structure and its mechanical properties have significant influence on the PCM melting time which these effects should be considered.
Compressed Sensing System for a Fingerprint Image Recognition Using Sensing Matrix with Chaotic Model-Based Deterministic Row Indexes

This paper proposes a novel design approach for a secured compressed sensing system for fingerprint sensing and transmission. In the proposed design, the first stage is acquiring the signal followed by sparsely modeling it using Orthogonal Matching Pursuit (OMP) algorithm then compressing. In addition to compressing, we multiply the sparse modeled data by a novel, deterministic, and partially orthogonal Discrete Cosine Transform (DCT) sensing matrix to guarantee its security. Furthermore, the construction of the sensing matrix uses a modified Multiplicative Linear Congruential Generator (MLCG) to select the row index appropriately from chaotically re-arranged rows of DCT pseudo-randomly. On the other hand, the compressed image's simultaneous recovery and decryption accomplished using a convex optimization method—the proposed system tested by employing different image and security assessment techniques. The results show that we have archived a better Peak Signal to Noise Ratio (PSNR) than the recommended value for wireless transmission using samples below 25%.
Selective laser-assisted deposition of silver nanoparticles on a Mg-2wt.%Ca substrate

Magnesium alloys appear as one of the most promising materials for many applications such as degradable implants. However, their mechanical, corrosion and integration behaviors need to be optimized to comply with this application. The present paper focuses on laser-assisted maskless microdeposition (LAMM) of silver nanoparticles, a surface treatment aiming to modify the surface characteristics for better integration of the magnesium implant. The LAMM process parameters for obtaining desirable depositions are reported. The impacts of the LAMM process on the deposit and the substrate microstructure have been investigated using various characterization techniques. The results show that laser processing, which can lead to particle sintering in the deposit, can be fine-tuned to achieve necking between nano particles, while the nano-scale characteristics of the deposited layer is retained. Microstructural characterization reveals significant grain refinement in the immediate vicinity of the surface, providing evidence for the thermal impact of the laser process on the substrate. The thermal profiles of the deposit and the substrate during processing are further investigated by developing a 3D finite element modelling method. The implementation of the model allows us to better understand the origin of the fine-grained sublayer as well as the overall thermal impact of the current laser processing method on the substrate.
Satisfaction with life in Special Olympic athletes: the role of autonomy support and basic need fulfilment

Aims: Athletes in the general population report higher satisfaction of basic needs when coaches are providing an autonomy supportive sport climate (ASSC). Our study aims at investigating whether ASSC is associated with satisfaction with life in athletes with intellectual disabilities (ID) and whether this association is mediated by basic need satisfaction. Method: During the Special Olympics World Winter Games 2017, 168 athletes with ID (M = 33.86 years; SD = 10.47) completed questionnaires measuring ASSC, basic need satisfaction (autonomy, competence, and relatedness), and satisfaction with life. Multiple linear regression analyses and mediation analyses were performed. The mediation model was controlled for the potential impact of participating in team vs. individual sports. Additionally, gender effects were explored. Results: ASSC was significantly associated with satisfaction with life (β = .38, p < .001). This association was mediated by competence (indirect effect: ab1 = .15; CI [.05; .32]) but not by autonomy or relatedness. No effects were found related to participating in team vs. individual sports or gender. Conclusions: Our study provides evidence that an ASSC is associated with athletes perceiving themselves as more competent and reporting more satisfaction with life.
‘It Is a Tradition in the Nuclear Industry . . . Secrecy’: Political Opportunity Structures and Nuclear Knowledge Production in France

Employing the example of France’s civil nuclear program, we connect political opportunity structures (POSs) to mechanisms of knowledge production, identifying how opposing stakeholders generate knowledge about a controversial technology. A history of nuclear dependence in France creates a context that praises, normalizes, and rationalizes nuclear energy while stigmatizing attempts to question or contest the nuclear industry’s dominant position. Integrating Bond’s knowledge-shaping process with Coy and colleagues’ concept of oppositional knowledge, we consider how the broader social, political, and economic context influences opposing stakeholder assessments of nuclear energy. Employing qualitative semi-structured interviews, we offer unique insight into the French nuclear debate, discussing the role of POS in shaping knowledge production.
Promoting Physics-Entrepreneurship Via Facebook: A Thematic Study

This study addresses the use of Facebook (FB) as a media for promoting science’ product. By adopting the concept of entrepreneurship education, the study explored the role of FB in promoting science message through “Learning Shirt-theme”. A thematic study was conducted, involving a group of Indonesian undergraduate physics students (34 members) in FB namely “Learning Shirt” and the content of their sites as the entrepreneurs and 192 active members as the service users. The students pursued their study at a public university in Surabaya, Indonesia, which contributed to the group’s community. These groups of students established entrepreneurship activities and promoted their message of physics via FB. The role of the researcher is a tutor of the community. Data analyses were used, including a thematic and documentation analysis and supported by questionnaire analysis. The results of the study categorized the physics-shirt into five themes: the history of physics, derivation of the equation in physics, physics symbols and equations, physics values, and models in physics. The FB users’ understanding of physics themes were in a good category with an average score of 79.79. The trend of FB user’s positive response regarding ten expressions in the questionnaire was increased significantly in three weeks.
Green Synthesis, Surface Activity, Micellar Aggregation, and Corrosion Inhibition Properties of New Gemini Quaternary Ammonium Surfactants

A new series of gemini quaternary ammonium surfactants containing amide groups with the formula CnH2n+1CONH(CH2)2N+(CH3)2(CH2)2 N+(CH3)2(CH2)2NHCOCnH2n+1·2CH3CO3– (n = 11, 13, 15, 17) have been synthesized by the using green reagent dimethyl carbonate. The structures of these surfactants were confirmed by Fourier transform infrared spectroscopy, 1H NMR, 13C NMR, and mass spectra. Their surface activities and aggregation properties were investigated by surface tension, conductivity, steady-state fluorescence, dynamic light scattering, and transmission electron microscope measurements. The results show that these synthesized gemini quaternary ammonium surfactants reduce the surface tension of water to a minimum value of 28.21 mN·m–1 at a concentration of 0.256 mmol·kg–1 and self-assemble spontaneously into double layer aggregates which are mostly single-room vesicles and multilamellar vesicles. Furthermore, with increasing alkyl chain length, their critical micelle concentration values and the degree of cou.
Societal activities associated with SARS-CoV-2 infection: a case-control study in Denmark, November 2020

Abstract Identification of societal activities associated with SARS-CoV-2 infection may provide an evidence base for implementing preventive measures. Here, we investigated potential determinants for infection in Denmark in a situation where society was only partially open. We conducted a national matched case-control study. Cases were recent RT-PCR test-positives, while controls, individually matched on age, sex and residence, had not previously tested positive for SARS-CoV-2. Questions concerned person contact and community exposures. Telephone interviews were performed over a 7-day period in December 2020. We included 300 cases and 317 controls and determined odds ratios (ORs) and 95% confidence intervals (95% CI) by conditional logistical regression with adjustment for household size and country of origin. Contact (OR 4.9, 95% CI 2.4–10) and close contact (OR 13, 95% CI 6.7–25) with a person with a known SARS-CoV-2 infection were main determinants. Contact most often took place in the household or work place. Community determinants included events with singing (OR 2.1, 95% CI 1.1–4.1), attending fitness centres (OR 1.8, 95% CI 1.1–2.8) and consumption of alcohol in a bar (OR 10, 95% CI 1.5–65). Other community exposures appeared not to be associated with infection, these included shopping at supermarkets, travel by public transport, dining at restaurants and private social events with few participants. Overall, the restrictions in place at the time of the study appeared to be sufficient to reduce transmission of disease in the public space, which instead largely took place following direct exposures to people with known SARS-CoV-2 infections.
Agronomic Evaluation of the Results of Selection within Late-Maturing Dactylis glomerata Populations

Selection from novel orchardgrass (Dactylis glomerata L.) germplasm sources resulted in the development of a late-maturing orchardgrass population. This population comprises 58 families that were evaluated with 5 commercial cultivars under frequent and infrequent harvest intervals at two Cache County, UT, USA field locations during 2013 and 2014. The objective of this study was to characterize the performance of individual families when compared to check cultivars Intensive and Latar. Across locations and harvest intervals, individual families produced greater herbage dry mass and nutritive value than the check cultivars did, i.e., up to 12% greater herbage dry mass than that of the highest check, Intensive, and 1% (neutral-detergent-fiber digestibility) to 14% (water soluble carbohydrates) greater forage quality than that of the corresponding highest check cultivar. However, there were substantial genotype-by-environment interactions between families and locations, but not harvest intervals. Because of this, results were analyzed across harvest intervals but within locations. Within each location, there were families that possessed similar or greater maturity, herbage dry mass, in vitro true digestibility, and neutral-detergent-fiber digestibility at both locations. Overall, on the basis of the performance of its component families, this late-maturing orchardgrass population exhibited potential for developing improved cultivars.
Separation of Lanthanide Isotopes from Mixed Fission Product Samples

The measurement of radioactive fission products from nuclear events has important implications for nuclear data production, environmental monitoring, and nuclear forensics. In a previous paper, the authors reported the optimization of an intra-group lanthanide separation using LN extraction resin from Eichrom Technologies®, Inc. and a nitric acid gradient. In this work, the method was demonstrated for the separation and quantification of multiple short-lived fission product lanthanide isotopes from a fission product sample produced from the thermal irradiation of highly enriched uranium. The separations were performed in parallel in quadruplicate with reproducible results and high decontamination factors for 153Sm, 156Eu, and 161Tb. Based on the results obtained here, the fission yields for 144Ce, 153Sm, 156Eu, and 161Tb are consistent with published fission yields. This work demonstrates the effectiveness of the separations for the intended application of short-lived lanthanide fission product analysis requiring high decontamination factors.
Urban geographical patterns of the relationship between mobile communication, social networks and economic development – the case of Hungary

In the post-industrial age, the transformation of urban networks and urban regions was fundamentally influenced by the rapid spread of infocommunication technologies (ICT) and the Internet. People share information in their daily lives with the help of various ICT devices and ultimately generate georeferenced data that could obtain important information about people’s use of space, spatial movement and social connections. The main aim of the study is to explore the urban geographical and spatial impacts of ICT and social media networks in Hungarian cities. We focus on drawing territorial and settlement hierarchical patterns and clusters based on the mobile communication and online social network relationship data of Hungarian cities. The paper highlights the relationship between the intensity of mobile communication and the density and expansion of intercity social relations and the settlements’ level of economic development, respectively. The methodology is based on mobile phone call detail record (CDR) analysis and intercity network analysis of social media activities. Our findings suggest that different communication networks follow divergent spatial patterns in Hungary. The traditional East–West dichotomy of the Hungarian spatial divide is still reflected in mobile communication, but intercity clusters based on social media activities are usually aligned to the borders of administrative structures. In several cases, we were able to identify strong intercity links between settlements with a similar level of economic development of the mesolevel spatial structure that traverses over different counties and regional borders. Results on social and demographic issues suggest that ‘generation Z’ could play a key role in dampening the social and economic tensions created by the digital divide in the long run. Using a multidimensional explanatory model, we could demonstrate the growing interconnectedness between digital networks and economic development.
Дослідження та оцінювання антиоксидантної активності дієтичних добавок з екстрактом зеленого чаю

The aim of the work is to determine and evaluate the antioxidant activity of dietary supplements with green tea extract, as well as to introduce conditional terms of the level of AOA. Materials and methods. The object of the study was dietary supplements of different manufactures: “Green Tea Extract” of Natural Sources, USA (DS1), “Extract of green tea” of Elit-Pharm, Ukraine (DS2) and “Green tea” of Pharmakom, Ukraine (DS3). Potentiometric measurements were conducted by pH meter Hanna 2550 (Germany) with a combined platinum electrode EZDO 5010. Epigallocatechin-3-O-gallate ˃98.0 % (Sigma Aldrich), K3[Fe(CN)6], K4[Fe(CN)6], NaHPO4, KH2PO4 were analytical grade. Results. It was established that a value of the antioxidant activity of DS1 was 36.51 mmol/tab, DS2 – 29.78 mmol/tab, and DS3 – 16.67 mmol/tab. DS1 had the highest value of the antioxidant activity, which correlated with the content of catechins (r2 = 0.9314). According to the proposed conditional terms of antioxidant activity dietary supplements, DS1 and DS2 possessed a low level of antioxidant activity, whereas DS3 corresponded to very low level of antioxidant activity. Conclusions. It was found that the studied dietary supplements with green tea extract have antioxidant activity, which correlates with the content of catechins.