Miracle-dz/UniFAR-FTUs huggingface dataset:
Effect of foliar application rates of Calcium and Boron on yield and yield attributes of soybean (Glycine max)

Foliar fertilizers of soybeans have been widely reported in many field trials. Although Calcium and Boron are essential nutrients for soybean, research results have shown that foliar application of nutrients has been contradictory. The objective of this study was to evaluate the soybean response by applying different foliar fertilizer rates Calcium and Boron on yield components and soybean yield applied at flowering (stadia fenologic R3). Two experiments were carried out during two successive seasons 2009-2010 and 2010-2011, in the Quatro Pontes, Parana State, Brazil. The area used was managed in no-tillage system consolidated. The experimental was randomized complete blocks design (RCBD), with six replicates. The treatments consisted of applying commercial fertilizer on the basis of Calcium and Boron (10% Ca2+ and 0.5% of B). Foliar fertilizer containing Ca2+ and B was applied 30 days after germination, when the plants were at the R3 stage. Also, five rates of commercial product (0, 1.5, 2.5, 3.5 and 4.5 L ha-1) were applied. Analyzing the results, it was concluded that the application of the foliar fertilizer with Calcium and Boron, applied 30 days after germination did not affect yield components and soybean yield during successive seasons 2009-2010 and 2010-2011. Key words: Glycine max, grain yield, fertilization.
Satisficing or Optimizing? - An Experimental Study

This experimental study investigates whether individuals prefer bounded rationality over rational choice theory when facing simple investment tasks. First, participants state some personal parameters that serve as an input to render a theoretical approach, namely satisficing or optimality, applicable. Then, they are guided through the decision making process where either ‘satisficing’ or ‘optimality’ is suggested and has to be implemented. The behavioral appeal of the two approaches is measured by the adjustments of personal parameters until accepting the investment decision suggested by theory. Additionally, a questionnaire is administered to elicit subjective contentment with the two approaches.
Numerical model to study the combustion process and emissions in the Wärtsilä 6L 46 four-stroke marine engine

Abstract The aim of the present paper is to develop a computational fluid dynamics (CFD) analysis to study the combustion process in a four-stroke marine diesel engine, the Wartsila 6L 46. The motivation comes from the importance of emissions from marine engines in the global emissions, particularly for nitrogen oxides (NOx) and sulfur oxides (SOx). The pressure and temperature fields were obtained, as well as the exhaust gas composition. In order to validate this work, the numerical results were satisfactory compared with experimental ones, which indicates that this model is accurate enough to reproduce the fluid pattern inside the cylinder during the combustion process. Accordingly, the aim of future works is to use this numerical procedure to optimize the performance and reduce the emissions of the new marine engine designs.
Biogenic and anthropogenic sources of aerosols at the High Arctic site Villum Research Station

Abstract. There are limited measurements of the chemical composition, abundance and sources of atmospheric particles in the High Arctic To address this, we report 93 d of soot particle aerosol mass spectrometer (SP-AMS) data collected from 20 February to 23 May 2015 at Villum Research Station (VRS) in northern Greenland (81∘36′ N). During this period, we observed the Arctic haze phenomenon with elevated PM1 concentrations ranging from an average of 2.3, 2.3 and 3.3 µg m−3 in February, March and April, respectively, to 1.2 µg m−3 in May. Particulate sulfate (SO42-) accounted for 66 % of the non-refractory PM1 with the highest concentration until the end of April and decreasing in May. The second most abundant species was organic aerosol (OA) (24 %). Both OA and PM1, estimated from the sum of all collected species, showed a marked decrease throughout May in accordance with the polar front moving north, together with changes in aerosol removal processes. The highest refractory black carbon (rBC) concentrations were found in the first month of the campaign, averaging 0.2 µg m−3. In March and April, rBC averaged 0.1 µg m−3 while decreasing to 0.02 µg m−3 in May. Positive matrix factorization (PMF) of the OA mass spectra yielded three factors: (1) a hydrocarbon-like organic aerosol (HOA) factor, which was dominated by primary aerosols and accounted for 12 % of OA mass, (2) an Arctic haze organic aerosol (AOA) factor and (3) a more oxygenated marine organic aerosol (MOA) factor. AOA dominated until mid-April (64 %–81 % of OA), while being nearly absent from the end of May and correlated significantly with SO42-, suggesting the main part of that factor is secondary OA. The MOA emerged late at the end of March, where it increased with solar radiation and reduced sea ice extent and dominated OA for the rest of the campaign until the end of May (24 %–74 % of OA), while AOA was nearly absent. The highest O∕C ratio (0.95) and S∕C ratio (0.011) was found for MOA. Our data support the current understanding that Arctic aerosols are highly influenced by secondary aerosol formation and receives an important contribution from marine emissions during Arctic spring in remote High Arctic areas. In view of a changing Arctic climate with changing sea-ice extent, biogenic processes and corresponding source strengths, highly time-resolved data are needed in order to elucidate the components dominating aerosol concentrations and enhance the understanding of the processes taking place.
Protein requirement for Trichogaster lalius, blue variety

The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g), with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet). The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect) and feed conversion ratio (negative linear effect). For weight gain, final length, feed intake and condition factor a quadratic effect of dietary protein levels was observed, with estimated values of 409.8, 366.2, 317.4 and 365.0 g CP/kg diet, to improve their performance parameters. Analysis of growth based on the length of the fish shows that 366.2 g of CP/kg diet meets the protein requirement of juvenile Trichogaster lalius, blue variety.
Effect of the Precipitating Agent on the Synthesis and Sintering Behavior of 20 mol% Sm-Doped Ceria

Nanocrystalline 20 mol% samaria-doped ceria powders (Ce0.8Sm0.2O1.9) were synthesized by coprecipitation techniques using various precipitating agents in aqueous solution: ammonia, ammonium carbonate, tetramethylammonium hydroxide, and urea. The synthesized powders after calcination at 600°C possess a fluorite structure with nanometric size although they are characterized by a very different morphology and degree of agglomeration. Remarkable differences appear in the sintering behavior, especially because of the presence of hard agglomerates. The precipitating agent has therefore a crucial role in the coprecipitation process, which influences the morphology of the powders and in turn the sintering behavior. The obtained results clearly reveal that ammonium carbonate and urea are the best precipitating agents to obtain final dense products after sintering.
Temperature constraints on the coldest brown dwarf known: WISE 0855-0714

Context. Nearby isolated planetary mass objects are beginning to be discovered, but their individual properties are poorly constrained because their low surface temperatures and strong molecular self-absorption make them extremely faint. Aims. We aimed to detect the near-infrared emission of the coldest brown dwarf (BD) found so far, WISE0855-0714, located ∼2.2 pc away, and to improve its temperature estimate (Teff = 225−260 K) from a comparison with state-of-the-art models of BD atmospheres. Methods. We observed the field containing WISE0855-0714 with HAWK-I at the VLT in the Y band. For BDs with Teff 24.4 mag at 3σ level, leading to Y − [4.5] > 10.5. Combining this limit with previous detections and upper limits at other wavelengths, WISE08550714 is confirmed as the reddest BD detected, further supporting its status as the coldest known brown dwarf. We applied spectral energy distribution fitting with collections of models from two independent groups for extremely cool BD atmospheres leading to an effective temperature of Teff < 250 K,
A self-consistent 3D model of fluctuations in the helium-ionizing background

Author(s): Davies, Frederick B; Furlanetto, Steven R; Dixon, Keri L | Abstract: Large variations in the effective optical depth of the He II Ly$\alpha$ forest have been observed at $z\gtrsim2.7$, but the physical nature of these variations is uncertain: either the Universe is still undergoing the process of He II reionization, or the Universe is highly ionized but the He II-ionizing background fluctuates significantly on large scales. In an effort to build upon our understanding of the latter scenario, we present a novel model for the evolution of ionizing background fluctuations. Previous models have assumed the mean free path of ionizing photons to be spatially uniform, ignoring the dependence of that scale on the local ionization state of the intergalactic medium (IGM). This assumption is reasonable when the mean free path is large compared to the average distance between the primary sources of He II-ionizing photons, $\gtrsim L_\star$ quasars. However, when this is no longer the case, the background fluctuations become more severe, and an accurate description of the average propagation of ionizing photons through the IGM requires additionally accounting for the fluctuations in opacity. We demonstrate the importance of this effect by constructing 3D semi-analytic models of the helium ionizing background from $z=2.5$-$3.5$ that explicitly include a spatially varying mean free path of ionizing photons. The resulting distribution of effective optical depths at large scales in the He II Ly$\alpha$ forest is very similar to the latest observations with HST/COS at $2.5 \lesssim z \lesssim 3.5$.
Wheelchair Athletes and Their Considerations in Sporting Activities

Wheelchair athletes need to engage into physical activity and sports in order to keep their body functioning for activity for daily living (ADL) or for sporting actions. Sports also are a part of the rehabilitation program since it been introduced by Sir Ludwig Gutmann in England late 1940s. With the growth of sport activity in daily lives of persons with disabilities, it has been rightly perceived that disabled persons could obtain the same physical and emotional benefits from sport as their able-bodied counterparts, leading to an increased need to overcome limitations, opponents and records. The introduction of sports therapy in rehabilitation, as well as further involvement in sports depends on the severity of the injury, might lead a disabled person to either become a non-competitive athlete or a paralympic athlete. Athletes with Spinal cord injury facing problems with their thermoregulatory response. In relation to that, during exercise in the heat, paraplegic athletes demonstrates similar increase in core temperature compared with able-bodied athletes, but at a much lower metabolic rate, reflecting the decreased heat dissipation. Individuals who use wheelchairs vary widely in their level of cardiorespiratory fitness, some being seriously unfit and others are achieving levels that compare closely with those of fit able-bodied athletes. Wheelchair users also should be encouraged to use a hand-propelled rather than a motorized chair in daily life and to eat a diet that is well regulated to avoid accumulation of excess body fat.
Information Content of CSI 300 Index Futures during Extended Trading Hours: Evidence from China

China established its stock futures exchange in year 2006, but not until year 2010 did the first futures contract become publicly available for trading. The tight government as well as the composition of market participants raises the question that whether this futures market is informationally efficient. We study the information incorporation of the futures market during the extended trading hours beyond those of the underlying spot market. Our analyses show that, first, spot market is the main information source of the futures market. In addition, using a T-GARCH model, we show that the post-closing, overnight and pre-opening returns are significantly correlated with the overnight spot market return. Second, the return innovations of the futures market significantly correlate with the overnight spot market return, indicating a price discovery role of the futures market. Finally, the futures market during the extended hours reflects the overnight news in the U.S. market.
Assessing regulatory performance: The case of the Namibian electricity supply industry

The power sector reforms that commenced in the 1990s led to the establishment of independent electricity regulators in more than twenty countries across Africa. The main purpose for these institutions was to create greater transparency in tariff setting and provide increased certainty for investors. At the same time regulators are charged with the protection of the interests of current and future consumers of electricity. During the initial stages of reform it was the expectation that the state owned incumbents that were traditionally vertically integrated would be unbundled and privatised. In practice there have been very few privatisations and what have emerged are hybrid markets where stateowned utilities remain dominant with independent power producers on the margin. In these markets regulation is a complex melting pot of incentivising the performance of state-owned utilities, attraction of private sector investment especially to fill gaps in generation capacity and making sensitive pricing decisions. Recognising that regulation is beginning to establish a track record, the African Electricity Regulator Peer Review and Learning Network, an initiative of the University of Cape Town, Graduate School of Business provides an opportunity for high level learning through the assessment of regulatory performance. We detail an assessment of regulation in Namibia where we find prices transitioning to cost reflectivity but question the sustainability of current arrangements in the distribution of electricity and the country’s long-term generation adequacy.
Title Auditory event-related potentials during target detection are abnormal in mild cognitive impairment

Objective: To define brain activity and behavioral changes in mild cognitive impairment (MCI), an isolated memory deficit in the elderly that is a major risk factor for Alzheimer’s disease. Methods: Brain potentials and reaction time were examined in elderly controls (n 1⁄4 12) and MCI (n 1⁄4 15) using a target detection paradigm. Subjects listened to a sequence of tones and responded to high-pitched target tones (P 1⁄4 0:20) that were randomly mixed with low-pitched tones (P 1⁄4 0:80). Measures were a pre-stimulus readiness potential (RP), post-stimulus potentials (P50, N100, P200, N200, P300), and reaction time. Results: Accuracy was equivalent between groups, but there was a trend for longer reaction times in MCI (P 1⁄4 0:08). Two potentials differed between groups: (1) P50 amplitude and latency were significantly increased in MCI, and (2) P300 latency was significantly longer in MCI. Results from two MCI subjects that converted to Alzheimer’s disease are also discussed. Conclusions: Brain potentials in MCI subjects during target detection have certain features similar to healthy aging (RP, N100, P200, N200), and other features similar to Alzheimer’s disease (delayed P300 latency, slower reaction time). P50 differences in MCI may reflect pathophysiological changes in the modulation of auditory cortex by association cortical regions having neuropathological changes in early Alzheimer’s disease. q 2002 Elsevier Science Ireland Ltd. All rights reserved.
Protection against Oxidation of Omega-3 Fatty Acids with Natural Antioxidants in Clove (Szygium aromaticum) Water Extracts during Storage of Sun dried Sardines (Ratrineobola argentea)

Omega-3 fatty acids are a family of polyunsaturated fatty acids (PUFAs) with beneficial health effects to humans if consumed in required amounts. Fatty fish species are known to be rich in marine-based omega-3 fatty acids, eicosapentaenoic acid (EPA, 20:5n-3), docosahexaenoic acid (DHA, C22:6n-3) and docosapentaenoic acid (DPA, C22:5n-3). Sardines (Rastrineobola argentea) from Lake Victoria are a good source of health promoting omega-3 fatty acids. Open sun drying is a common and traditional sardine processing and preservation method. Due to their chemical instability omega-3 fatty acids in sun dried sardines are prone to lipid oxidation during processing and subsequent storage. This study investigated the use of clove (Syzygium aromaticum) water extracts as natural antioxidants to protect omega-3 fatty acids against oxidative damage during storage of sun dried sardines. Lipid oxidation was assessed by peroxide value, volatile secondary oxidation products and fatty acid profiles. The antioxidant capacity of extracts was evaluated by total phenolic content, 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and iron (Fe2+) chelating ability. Clove extracts resulted into significantly higher retention of total PUFAs, DHA, EPA and DPA at the end of 30 days storage period and lower concentrations of secondary lipid oxidation products. This is an evidence of their enhanced oxidative stability in the real food system due to presence of natural clove antioxidants.
The microbial diversity and structure in peatland forest in Indonesia

The microbial community structure and function under forest in tropical peatlands are poorly understood. In this study, we investigated the microbial community structure and diversity in natural peat swamp forest soil, disturbed peat soil and mineral soil in Central Kalimantan, Indonesia, using 454 pyrosequencing. The results showed that the natural peat soil had the greatest fungal species richness (Chao1), which was significantly (p < .05) larger than that in the other two soils. Community structure of both fungi and bacteria in natural peat soil differed significantly from that in the disturbed peat soil (p = .039 and p = .045, respectively). Ascomycota (40.5%) was the most abundant phylum across the three soils followed by Basidiomycota (18.8%), Zygomycota (<0.1%) and Glomeromycota (<0.1%). The linear discriminant analysis with effect size (LEfSe) showed that Ascomycota (p < .05) and genus Gliocephalotrichum (p < .05) dominated in natural peat soil. Functionally, pathotrophs were more abundant in disturbed peat soil (p < .05). Proteobacteria (43.8%) were the most abundant phylum followed by Acidobacteria (32.6%), Actinobacteria (9.8%), Planctomycetes (1.7%). Methylocystis, Telmatospirillum, Syntrophobacter, Sorangium and Opitutus were the more abundant genera in disturbed peat soil, whereas Nevskia and Schlesneria were more abundant in mineral soil and natural peat soil, respectively. The natural peat forest soil supported a more diverse microbiology; however, the land use of such a soil can change its microbial community structure. The results provide evidence that the disturbance of tropical peat land could lead to the introduction and spread of a large number of fungal diseases
The Intergenerational Transmission of Reading: Is a Good Example the Best Sermon?

We use the last two waves of the Italian Time Use Survey to analyse the intergenerational transmission of reading habits. This can be explained by both cultural and educational transfers from parents to children and by imitative behaviour. Imitation is of particular interest, since it suggests the direct influence parents can have on a childi? ½s preference and habit formation, and opens the way for active policies promoting good parenting behaviour. We investigate the imitative behaviour of children using a household fixed-effects model, where we identify the impact of the parentsi? ½ role by exploiting the different exposure of siblings to parentsi? ½ example within the same household. We find robust evidence on the existence of an imitation effect: on the day of the survey children are more likely to read after seeing either the mother or the father reading.
Effect of Partial Ground Plane Removal on the Radiation Characteristics of a Microstrip Antenna

This study presents a new, simple method for reducing the back-lobe radiation of a microstrip antenna (MSA) by a partially removed ground plane of the antenna. The effect of the partial ground plane removal in different configurations on the radiation characteristics of a MSA are investigated numerically. The partial ground plane removal reduces the backlobe radiation of the MSA by suppressing the surface wave diffraction from the edges of the antenna ground plane. For further improving the front-to-back (F/B) ratio of the MSA, a new soft-surface configuration consisting of an array of stand-up split ring resonators (SRRs) are placed on a bare dielectric substrate near the two ground plane edges. Compared to the F/B ratio of a conventional MSA with a full ground plane of the same size, an improved F/B ratio of 9.7 dB has been achieved experimentally for our proposed MSA.
Developing reading skills and motivation through mobile phones

Continuous development of information and communication technologies has opened the door to a wide range of opportunities for digital learning. Recent didactic concepts, such as student-centered teaching stress the need for learner autonomy, which includes non-formal learning aided by modern technologies such as cell phones. Mobile phones have become an essential part of the teenager’s life. If incorporated in the learning process, they could have a positive effect on student’s motivation, which in turn would lead to improved achievements. The aim of this study was to determine the attitudes of Croatian students of English and German towards the use of modern technologies in teaching foreign languages. The study evaluates the students' attitudes towards reading comprehension in a foreign language when using traditional methods (multiple choice questions and paper-pencil C-Test method) as opposed to solving tasks with the use of mobile technology. The results of the study show that, although students find online testing more interesting and less stressful, they still prefer to be tested in the classical way.
Advising the Family Firm

This study reviews the literature on advising family firms and integrates past contributions in such a way that scholars can use the findings as a foundation to launch future research. It reviews 105 articles and other research contributions published since 1983. The findings suggest that although advisors play a crucial role within family firms, there remains to date a lack of rigorous academic research. These past contributions are integrated into a framework that provides a first step toward developing theoretical arguments and charting directions for future research that address the nature of the family firm–advisor relationship.