Miracle-dz/UniFAR-FTUs huggingface dataset:
Luminescence ultraviolette et dynamiques excitoniques dans l’oxyde de zinc massif et nano-structuré

Cette these presente les travaux effectues au CELIA sur la luminescence ultraviolette et les dynamiques excitoniques dans l’oxyde de zinc (ZnO) sous forme massive et nano-structuree. Les mesures ont ete effectuees en conditions experimentales controlees (temperature, fluence d’excitation), pour differentes energies de photon excitateur. Nous avons mesure les spectres d’emission sous excitation a un photon UV (4,66 eV), ainsi que a 3 photons IR (1,55 eV), et propose un schema sequentiel de formation des excitons (avec simulations), en particulier pour les excitons DX. Nous avons obtenu une duree de vie nanoseconde de DX dans les deux cas, en desaccord avec la majorite des etudes publiees dans la litterature.
Using YouTube to Enhance Sustainable Management among New Generations

Sustainable management is a global issue which becomes increasingly vital for everyone in this disruptive world. However, the issue seems vague to new generations. To educate the issue cognitively, YouTube is one of the most effective and practical tools for the new generations. This study therefore explored how YouTube enhanced cognitive learning of sustainable management. This was a mixed-method study. The samples in this study were 35 students from various fields (namely engineering, biology, agriculture, and tourism industry and hospitality management). The instruments for data elicitation included 3 short YouTube videos regarding sustainable management, pretests and posttests, observation notes, a questionnaire and an interview. Findings revealed that the samples became more conscious of the issue after viewing the videos. In addition, the learners revealed positive attitudes towards the dynamics of meaningfully and socially engaged discussion and the presentation of their cognitive learning of the issue. Future study should replicate this study with more videos to educate more insightful learning of the issue.
Isopycnal Transport and Scavenging of 230Th and 231Pa in the Pacific Southern Ocean

The Southern Ocean hosts complex connections between ocean physics, chemistry, and biology. Changes in these connections are hypothesized to be responsible for significant alterations of ocean biogeochemistry and carbon storage both on glacial‐interglacial timescales and in the future due to anthropogenic forcing. Isotopes of thorium (230Th and 232Th) and protactinium (231Pa) have been widely applied as tools to study paleoceanographic conditions in the Southern Ocean. However, understanding of the chemical behavior of these isotopes in the modern Southern Ocean has been limited by a paucity of high‐resolution observations. In this study, we present measurements of dissolved 230Th, 231Pa, and 232Th on a meridional transect along 170°W from 67°S to 54°S in the Pacific sector of the Southern Ocean, with high vertical and meridional sampling resolution. We find Th/Pa fractionation factors below 1, highlighting the preferential removal of Pa relative to Th in a region with low lithogenic inputs where the particle flux is dominated by biogenic opal. We also find steep gradients in all three of these isotopes along neutral density surfaces from north to south, demonstrating the importance of isopycnal mixing in transporting these nuclides to the Southern Ocean. Our results suggest that 231Pa and 230Th in the Southern Ocean are highly sensitive tracers of physical transport that may find use in studies of Southern Ocean biogeochemical‐physical connections in the past, present, and future.
Discursive Design: Critical, Speculative, and Alternative Things, By Bruce and Stephanie Tharp

take time. It will require dedicated practitioners who want to create systemic value without sacrificing the individual experience; create innovation without defining success as profit; frame problems that leverage community knowledge without marginalizing others; build systems that address social evolution without ignoring advantage; teach design methods that promote humanity without sacrificing technical skills; and create technical innovation to holistically improve the human condition. Are we, as readers, up to the task?
Richness and Diversity of the Edaphic Macrofauna in a Brazilian Seasonally Dry Tropical Forest

The objective of this work was to evaluate the influence of seasonality on the diversity and richness of the edaphic macrofauna during the dry and rainy periods, in an area of Caatinga in the Brazilian semiarid region. Samples were collected in a sample grid, totaling 10 points, spaced 30 meters apart, in rainy and dry seasons. For quantitative assessment of macrofauna, the total number of organisms (species abundance) was measured, according to diversity. The diversity of the soil macrofauna for this research corresponds to the following order: Hymenoptera> Diptera> Aranaea> Original Research Article Costa et al.; JEAI, 42(9): 80-85, 2020; Article no.JEAI. 60750 81 Orthoptera> Coleoptera, for the rainy and dry periods, with a greater predominance of the order Hymenoptera. The influence of seasonality was observed in relation to the richness and diversity of the region's macrofauna, with marked fluctuations between the rainy and dry periods.
A compact folded SIW multibeam antenna array for 5G millimeter wave applications

A novel compact multilayer multibeam antenna array based on substrate integrated waveguide (SIW) is proposed in this letter for 5G millimeter wave (mm‐wave) applications. A multimode beam forming network (BFN) cascaded by phase compensation and coupling structures is folded to make the antenna array more compact. The phase difference between the output ports of traditional multimode beamforming network is very unstable, which would seriously affect the multibeam performance of antenna array. Therefore, the compensating phase shifter adopts the SIW transmission line structure with unequal length and width, which enables the multimode BFN achieving better performance in the bandwidth of 27–29 GHz. Four slot arrays are employed as the radiation structure. The overall structure of the proposed antenna consists of three parts, including a multimode beamforming network, a compensated phase shifter, and an SIW slot array. If these components are cascaded directly, the size of the antenna would be very large and the aperture efficiency will be low. So the proposed antenna is folded into three layers, one part for each layer. The overall antenna size is 66.7 mm × 47.5 mm (6.23λ × 4.44λ at 28 GHz). The antenna array is designed, fabricated, and measured. The measured results show that four deflected beams are realized in the band of 27–29 GHz. The radiation beams demonstrate a wide azimuthal coverage of ±48 deg, and a peak gain of 16.8 dBi for Port 1 excitation and 17.3 dBi for Port 2 excitation. The simulated radiation efficiency is better than –2 dB from 27 to 29 GHz. The proposed antenna features a compact size, low profile, good radiation performance, which is well suited for applications in the 5G mm‐wave communication systems.
An investigation of the Kumamon and Sukjai mascots on destination branding

Purpose This study aims to investigate what the crucial elements are when it comes to using a mascot to brand a destination. This study applies the proposed framework of “mascot usage for destination branding” to two mascot cases, namely, Kumamon and Sukjai. In particular, the Kumamon mascot is first investigated, looking at how it is used to promote Kumamoto, one of the key cities in Kyushu, Japan. Sukjai, another mascot, is then analysed in a similar light. The dominant factors that lead to the success of Kumamon mascot are analysed on the case of Sukjai mascot. The disparity between the two mascot cases allows for a better understanding of the dimensions and practices or lack thereof, that can occur in mascot creation and implementation. Design/methodology/approach A qualitative methodology is applied, and thematic and content analyses are applied to the three data sources, namely, secondary data collection from different data sources in the English and Japanese languages; researcher onsite observation in Kumamoto; and an in-depth interview with purposive sampling experts. Findings The findings indicate that according to the proposed framework, Kumamon has shown all three elements of the framework, namely, promoting destination identity and personality, creating differentiation for the location and having strong stakeholder involvement. On the other hand, these elements were found not to be as strong in the Sukjai case. The findings from the case comparison determine several underlining factors, including the national culture, which can help or hinder in laying the groundwork for the successful application of a mascot in destination branding. Originality/value This study complements the previous literature on mascot branding and elaborates on the framework of mascot usage for destination branding based on a combination of the three proposed elements.
An Economic Approach to Assess the Annual Stock in Beekeeping Farms: The Honey Bee Colony Inventory Tool

For beekeepers, the beehive stock represents a fundamental means of ensuring the continuity of their activity, whether they are professionals or hobbyists. The evaluation of this asset for economic purposes requires knowledge of the rhythms and adaptations of honey bee colonies during the annual seasons. As in any breeding activity, it is necessary to establish the numerical and economic size of the species bred. Beekeepers are interested in this evaluation to monitor beehive stock. For keeping economic accounts of stock, a specific tool has been developed and proposed, here called the “Honey Bee Colony Inventory (HBCI)”. The HBCI can be used as either a final or preventive scheme to assess the numbers of honey bee colonies and nuclei, and the mortality rate, in order to calculate the monetary value. This tool allows the strength of honey bee colony stocks to be monitored, including fluctuations throughout the year, and will prove useful for determining solutions to maintain or increase how long stocks last. Data can be registered in countries such as Italy where the veterinary authorities request data on the stock owned and its variations. Due to widespread Varroa mite infestations, in recent years, beekeepers have experimented with a range of different biotechniques that have included queen caging as well as drone and total brood removal. To verify its effectiveness for gathering honey bee colony data, the HBCI was used in nine beekeeping farms applying different biotechniques to control Varroa mites: chemical treatment, total brood removal, queen caging and old queen replacement by royal cell insertion. The results are compared and discussed. Out of the nine farms, seven showed negative monetary value according to the HBCI, as expected, due to multiple factors such as the unfavorable climate trend of 2017 in the studied area. The positive aspect is that the application of this tool will allow farmers to monitor, manage and maintain their beehive stocks.
Preparation of hydrogen-rich gas by catalytic pyrolysis of straw-plastic mixture with nickel-based honeycomb cinder

Nickel catalyst supported on honeycomb cinder (Ni/HC) was prepared by a homogeneous precipitation method. The catalyst was applied to produce hydrogen-rich combustible gas by catalytic pyrolysis of soybean straw and plastic (PE) mixture. The straw and plastic materials were analyzed by elemental analysis and industrial analysis. The support and catalyst were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 adsorption-desorption isotherm (BET). The analysis showed that NiO was well loaded on the surface of honeycomb coal slag carrier. The effects of Ni loading, pyrolysis temperature, holding time, and calcination temperature on the experimental results were studied. The results showed that the preparation of the catalyst was feasible and that it had a good catalytic effect. When Ni loading was 15 wt. %, catalytic pyrolysis temperature was 700 °C, holding time was 20 min, and calcination temperature of catalyst was 400 °C, H2 concentration increased from 20.6 to 52.8 vol.%, and while H2 yield was 302 mL/g, CH4 concentration decreased from 51.1 to 22.6 vol.% and CO concentration increased from 10.8 to 17.8 vol.%. After the catalyst was regenerated 6 times, the H2 concentration still reached 40 vol.% and the combustible gas concentration was still above 80 vol.%. The catalyst still had good catalytic activity.
Opinions of Students About Distance Education in the Pandemi Process

Distance education has become an imperative in the process of the pandemic in Turkey. Private or public institutions that provide education and training at all levels continued their activities through distance education. This study was carried out to determine student views on distance education. The working group consists of 508 students studying in different faculties and vocational schools of Malatya Turgut Ozal University. The data were collected by a "Student Views on Distance Education" questionnaire prepared by the researcher.
Pilot-Scale Test of Counter-Current Ion Exchange (CCIX) Using UOP IONSIV IE-911

A pilot-scale test of a moving-bed configuration of a UOP IONSIV? IE-911 ion-exchange column was performed over 17 days at Severn Trent Services facilities. The objectives of the test, in order of priority, were to determine if aluminosilicate precipitation caused clumping of IE-911 particles in the column, to observe the effect on aluminum-hydroxide precipitation of water added to a simulant-filled column, to evaluate the extent of particle attrition, and to measure the expansion of the mass-transfer zone under the influence of column pulsing. The IE-911 moved through the column with no apparent clumping during the test, although analytical results indicate that little if any aluminosilicate precipitated onto the particles. A precipitate of aluminum hydroxide was not produced when water was added to the simulant-filled column, indicating that this upset scenario is probably of little concern. Particle-size distributions remained relatively constant with time and position in the column, indicating that particle attrition was not significant. The expansion of the mass-transfer zone could not be accurately measured because of the slow loading kinetics of the IE-911 and the short duration of the test; however, the information obtained indicates that back-mixing of sorbent is not extensive.
Deposition of SiO2 films from novel alkoxysilane/O2 plasmas

The deposition of SiO2 films from novel alkoxysilane/O2 rf plasmas has been investigated using tetraethoxysilane and the novel alkoxysilanes, triethoxysilane, tetramethoxysilane, and trimethoxysilane. We have demonstrated that high quality SiO2 films can be deposited from each of these alkoxysilanes under similar conditions. For all precursors, film deposition rates decrease with the addition of O2. Using 20:80 alkoxysilane/O2 plasmas, film deposition rate decreases with increasing substrate temperature and plasma power, while the SiO2 film quality increases, as determined by Fourier transform infrared spectroscopy, ellipsometry, and wet etch rates. Substrate temperature appears to be the most influential deposition parameter, significantly affecting both composition and properties of the deposited SiO2 films. Measured apparent activation energies for SiO2 deposition from alkoxysilane/O2 plasmas are negative for all precursors. This suggests an adsorption/desorption-limited deposition mechanism controls f.
Dynamic investment, debt structure and debt overhang

We study the impact of the optimal debt and priority structure on the intertwined corporate financing and investment decisions in a dynamic trade-off model, where the firm simultaneously uses bank and market debt for project financing. Private bank debt is renegotiable during financial distress, thus it avoids inefficient and costly bankruptcy losses should the renegotiation be successful. Our model shows: (i) Shareholders' bargaining power, renegotiation friction, growth potential, and bankruptcy costs limits bank debt capacity; (ii) The substitution effect between bank and market debt dominates in most cases; (iii) Bank debt issuance reduces the bankruptcy risk and speeds firm investment, which mitigates the debt overhand effect; (iv) Debt priority structure has a monotonic positive effect on firms' optimal capital structure, the net benefit of mixed debt financing, and firm valuation, the effect of which is much stronger for weaker shareholders, therefore, it would be optimal to place bank debt as senior for firm value maximization; (v) The benefit of mixed debt financing is significant (a firm valuation boost between 5%- 10% ) compared to either the bank debt exclusive or market debt exclusive debt structure.
Evaluation of runs of homozygosity and genomic inbreeding in Holstein cattle from Colombia

Traditional selection programs for dairy cattle, based on quantitative principles, have worked well and allowed strong selection processes in the world over many decades. The objectives of this work were to estimate linkage disequilibrium (LD) levels at varying SNPs densities, to evaluate the effective population size of Holstein cattle, to characterize runs of homozygosity (ROH) distribution through Holstein cattle from Nariño and, to estimate and compare inbreeding coefficient (F) based on genomic markers information, runs of homozygosity (FROH), genomic relationship matrix (FGRM), and excess of homozygous (FSNP). After quality control, the dataset used was composed of 606 Holstein animals and 22200 SNP markers. PLINK program was used to identify LD, Ne, ROH segment and FROH and FSNP, FGRM was calculated with BLUPF90 family of programs. The average of r2 in all chromosomes was 0.011, the highest r2 was found in BTA3 (0.0323), and the lowest in BTA12 (0.0039). 533 ROH segments were identified in 319 animals; findings obtained in this study suggest that on average 0,28% of Holstein genome is autozygous. Total length of ROH was composed mostly of small segments (ROH1-4Mb and ROH4-8Mb). These segments accounted for approximately 96%, while larger ROH (ROH>8Mb) were 3.37% of all ROH detected. Inbreeding averages FROH, FSNP and FGRM methodologies were 0.28%, 3.11% and 3.36% respectively. The Pearson’s correlation among these different F values was: 0.49 (FROH-FSNP), 0.25 (FROH-FGRM), 0.22 (FSNP-FGRM). The distribution of ROH shared regions identified on 19 autosome chromosomes, cover a relevant number of genes inside these ROH. Our result evidenced lowest LD extension levels compared with other Holstein populations; inbreeding results suggest that FGRM and FSNP may be useful estimators of individual autozygosity in Holstein from Colombia. Genes related with production and reproduction were found, but the most important are the two that may be related to adaptation to Colombian high tropics. This work is a pioneer and be the starting point for programs of genetic improvement and genomic population studies in the country and mainly in high tropic areas where the dairy breeds have an important production.
Pengaruh literasi keuangan, inklusi keuangan dan modernitas individu terhadap perilaku menabung mahasiswa perguruan tinggi negeri surabaya

Tingginya tingkat tabungan sebuah negara akan mendorong perkembangan perekonomian negara tersebut. Tinggi rendahnya perilaku menabung disebabkan oleh faktor internal dan faktor eksternal. Di penelitian ini, faktor yang diduga mempengaruhi perilaku menabung adalah literasi keuangan, inklusi keuangan dan modernitas individu. Tujuan dari dilakukannya penelitian ini ialah untuk menganalisis pengaruh literasi keuangan, inklusi keuangan, dan modernitas individu secara simultan dan secara parsial terhadap perilaku menabung mahasiswa Perguruan Tinggi Negeri Surabaya. Jenis penelitian ini adalah kuantitatif. Populasi penelitian ini adalah mahasiswa Universitas Negeri Surabaya, Universitas Airlangga dan Universitas Pembangunan Nasional “UPN” Jawa Timur angkatan 2017 yang berjumlah 845 mahasiswa. Sampel dalam penelitian ini berjumlah 100 mahasiswa. Tahap pengambilan sampel yang digunakan ialah teknik random sampling . Teknik pengumpulan data menggunakan tes dan kuesioner dan teknik analisis data menggunakan analisis linier berganda menggunakan program IBM SPSS Statistics 24. Hasil data yang dilakukan setelah analisis mengungkapkan bahwa: (1) : literasi keuangan, inklusi keuangan dan modernitas individu berpengaruh secara simultan terhadap perilaku menabung, (2) literasi keuangan tidak berpengaruh terhadap perilaku menabung, (3) inklusi keuangan berpengaruh secara parsial terhadap perilaku menabung, (4) modernitas individu berpengaruh secara parsial terhadap perilaku menabung.
Micronutrient Foliar Fertilization for the Biofortification of Raw and Minimally Processed Early Potatoes

Agronomic fortification with microelement as well as macronutrients has been used in recent years with increasing frequency to improve the nutritional quality of plant products for human consumption. Here the influence of pre-harvest foliar micronutrients fertilization (Micro+) including B, Cu, Fe, Mn, Mo and Zn compared to control (Micro−) on mineral profiles of raw and minimally processed potatoes of cv. Bellini was investigated. The mineral profile was analyzed on raw tubers at harvest and on minimally processed potatoes after 0 and 12 days of storage at 4 ± 1 °C. Preliminary results showed that micronutrients fertilization improved mineral composition of raw potatoes, through an increase in tuber concentrations of Fe (+70%) and Zn (+27%), but also of N (+23%), and Mn (+18%). The increased concentrations of minerals in micro-fertilized raw potatoes led to a better concentration in micro-fertilized minimally processed potatoes, even if some minerals were lost in processing, presumably due to skin removal. The reduction was particularly evident in both Micro– and Micro+ samples for Fe (−29%) and Ca (−17%). However foliar micronutrient fertilization markedly improved the Fe and Zn contribution that a 200 g serving of potatoes can give to current recommended nutrient intakes (RNIs) both in raw and minimally processed potatoes. Storage for 12 days did not alter the mineral profile of the tubers. Observations of the mineral profiles of the studied samples suggest that the application of foliar microelement-containing solutions was able to fortify both raw and minimally processed potatoes.
An Effective Two‐Emulsion Approach to the Synthesis of Doped ZnS Crystalline Nanostructures

The controlled, room-temperature synthesis of M-doped (M = CuII, MnII, SmIII, GdIII, or TbII) ZnS nanostructures (with an average crystallite size of 5–10 nm) in the confined space of miniemulsion droplets is reported herein and discussed. The adopted synthetic route is a colloidal method, ideally suited to easily achieve small particle size and narrow size distribution. The synthesized functional nanostructures crystallize in the sphalerite lattice, as determined by powder X-ray diffraction. In addition to structural characterization, several complementary techniques, such as X-ray photoelectron spectroscopy, thermogravimetric analysis, differential scanning calorimetry, micro-Raman spectroscopy, inductively coupled plasma mass spectrometry, and Fourier transform infrared spectroscopy were used to determine chemical and physical properties as well as the microstructural features of our products. As far as the morphological aspects of the obtained samples are concerned, they were studied by means of scanning and transmission electron microscopies. Finally, the local structure around dopant ions was unravelled by means of X-ray absorption spectroscopy, in particular through extended X-ray absorption fine structure measurements carried out at the Zn, S, and dopant K or L3 edges. This information has been complemented with the investigation of the photoluminescence properties.