Miracle-dz/UniFAR-FTUs huggingface dataset:
Short‐term load forecasting based on support vector regression and load profiling

The article proposes a methodology to forecast the electric load for the 24 h of the following day based on support vector regression. The study considers 24 distinct models, one for each predicted hour, where each individual model is treated independently. Its objective is to find the optimal combination of support vector machine parameters that could generalize low forecasting errors, using simulated annealing as a metaheuristic. The adopted methodology is compared to concurrent methods based on neural networks when applied to a simulated load diagram (to illustrate a distribution feeder supplying a sample of 740 consumers). The results have proven its effectiveness with mean absolute percentage errors being less than 5% for testing samples. The study also focuses on evaluating the potential benefits of adopting load profiling information as input in support vector regression, giving a consistent proof of its importance. Copyright © 2013 John Wiley & Sons, Ltd.
Influence of tillage system and starting N fertilization on seed yield and quality of soybean Glycine max (L.) Merrill.

This field polyfactorial trial with soybean was performed on gleyey alluvial soil in 2006–2008. Three tillage systems: conventional, reduced (spring shallow cultivation to a depth of 100 mm followed by drilling), no-tillage and two doses of starting n: 50 kg n/ha, 25 kg n/ha were tested in this trial. The trial was organized in a complete randomized block design with four replicates. all data were subjected to anova, lSD method and regression analysis using Statgraphics. Seed yield was highly significantly (P ≤ 0.01) affected by weather conditions. Weather was the most dominant factor that influenced seed yield. The highest average yield was found in 2008 – 2.77 t/ha, followed by 2.34 t/ha in 2006 and the lowest yield of 1.98 t/ha in 2007. The stage of seed-filling was found as the most sensitive to water stress resulting in a yield reduction. Seed protein and oil were also highly significantly (P ≤ 0.01) affected by weather. This influence, as compared with tillage system and starting n, was much higher. a negative correlation coefficient r = –0.96 was found between protein and precipitation, compared to a positive correlation coefficient r = 0.81 between oil and precipitation. tillage system affected seed yield highly significantly (P ≤ 0.01). The highest average yield of 2.60 t/ha gave conventional tillage, followed by reduced tillage – 2.39 t/ha and no-tillage – 2.11 t/ha. The results do not support the choice of no-tillage for profitable soybean production on heavy soils. Starting n fertilization had a significant (P ≤ 0.05) influence on seed yield. The average yield difference between the two starting n treatments was 0.05 t/ha in favour of the dose of 25 kg n/ha. This dose was proven as a rational one.
Prevalence and Associated Factors of Depression, Anxiety and Stress among Undergraduate Medical Students

The prevalence of psychological disturbances in medical undergraduate students has been reported from various countries. Very few studies regarding student distress reported from India. Therefore, we conducted this study to determine the presence of depression, anxiety and stress among medical students in MNR Medical College, Sangareddy, Telengana. In this cross-sectional study, we recruited 257 students from MNR Medical College after obtaining written voluntary consent. DASS 42 questionnaire was used to collect information on basic demographic. Scores for each of the respondents were calculated as per the severity- rating index. Data was analysed by SPSS 20.0. DASS scores were slightly higher in males than female, but it was not statistically significant. Depression, anxiety and stress in students has high negative effect in their social and personal lives. So there is a need for urgent attention to the psychological well-being of undergraduate medical students to improve their life style.
A Simple Laboratory Scale Method for Isolation of Amaranth Starch

Starch was isolated from the seeds of Amaranthus hypochondriacus and Amaranthus cruentus by two established methods and a new simpler method involving steeping in dilute alkali, neutralization, and ambient air drying without using expensive or highly hazardous chemicals. The latter is recommended for isolating amaranth starch for human food uses on a laboratory scale.
Genetic diversity of ash gourd (Benincasa hispida (Thunb) Cogn.) genotypes

A study on genetic divergences was carried out on 45 diverse ash gourd genotypes. Based on D2 analysis, the genotypes were grouped into four different clusters, where the cluster I possessed higher number of genotypes (37) followed by the cluster II (3), and III, IV, V, VI, VII had only one genotype. The genotypes collected from different location were grouped into different clusters. The maximum inter-cluster distance was observed between the cluster III and cluster VII. In case of intra-cluster distance, the maximum distance was observed in the cluster II. Among the twenty two traits studied, maximum contribution was made by fruit circumference followed by number of fruits per vine, fruit yield per vine, average fruit weight. Considering cluster mean, the genotypes of cluster VI and cluster VII could be selected for yield and yield attributing characters. The wider genetic diversity was observed in cluster V, VI, VII which indicate the potentiality of this diverse genotype collection for providing basic material for future breeding programmes.
Performance characteristics of the ArF excimer laser using a low-pressure argon-rich mixture

Low‐pressure operation of an electron‐beam excited ArF laser was experimentally compared to KrF lasers, both of which were pumped at high excitation rate by a 65 ns electron beam. We obtained the ArF laser energy of 95 J with an intrinsic efficiency of 3.4% from a 650 Torr Ar/F2 mixture pumped at an excitation rate of 2.3 MW/cm3. In the low‐pressure region (near one atmosphere) the Ar/F2 mixture gave higher efficiency than that of Ne‐buffered mixtures, and moreover gave higher efficiency than those of the KrF lasers operating with various mixtures under the same excitation rate. As a result, the ArF laser operating in this regime is found to be a better candidate than the KrF laser as an inertial confinement fusion driver.
Analytical solution of two-dimensional model of blood flow with variable viscosity through an indented artery due to LDL effect in the presence of magnetic field

The present study is two-dimensional analysis of blood flow with variable viscosity through stenotic artery in the presence of transverse magnetic field in the porous medium. Blood flowing radially to walls of artery and axially through lumen has been determined through the solution of Navier Stoke’s equations and Darcy law. If deposition of low density lipoprotein (LDL) is taken into case, the coupled approach offers an understanding of practical problem of blood flow through stenosed artery. The analytical expressions for radial velocity, axial velocity, shear stress and pressure gradient are obtained in the presence of magnetic field using Frobenius method. The numerical results for radial velocity, axial velocity, pressure gradient and shear stress are expressed graphically. The results then obtained are discussed to provide physical interpretation. The investigation shows that hypertensive patients are more adequate to have heart circulatory problems.
Temperature‐sensitive membranes prepared by the plasma‐induced graft polymerization of N‐Isopropylacrylamide into porous polyethylene membranes

A temperature-responsive polymer, poly(N-isopropylacrylamide) (PNIPAAm), was grafted onto porous polyethylene membranes by a plasma-induced graft polymerization technique. A wide range of grafting was achieved through variations in the grafting conditions, including the postpolymerization temperature, time, monomer concentration, and graft-reaction medium. The active species induced by plasma treatment was proven to be long-living via a postpolymerization time of 95 h. Different solvent compositions, that is, water, methanol, benzene, and water/methanol, were used as reaction media, and water showed a much higher polymerization rate than the organic solvents. Based on the hydrophilicity of the active species, a mechanism explaining the solvent effect in plasma-induced graft polymerization was examined. Characterizations by scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), and micro Fourier transform infrared showed that the grafted polymers were located on both the outer surface and inside pores of the membranes. The XPS analysis also confirmed that the polar amide groups tended to distribute more outward when grafted PNIPAAm was in its expanding state than when it was in its shrinking state. Water permeation experiments showed that the permeability of the grafted membranes varied dramatically with a slight temperature change in the vicinity of the lower critical solution temperature (LCST) of PNIPAAm. The effective pore radii of the grafted membranes above and below the LCST could be depicted by Hagen-Poiseuille's law. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3180–3187, 2003
Nitrogen Source, Timing, and Rate Alternatives for Furrow‐irrigated Sugarbeet

Furrow irrigation poses particular challenges for optimizing sugarbeet (Beta vulgaris) nitrogen uptake. The purpose of this research was to evaluate six N sources available to sugarbeet producers, including three dry products (urea and two enhanced-efficiency urea products) and three fluid products [ureaammonium-nitrate (UAN)-32 and two enhanced-efficiency fluid products]. Products were evaluated at two application timings (split preplant and side dress, and all preplant) and two rates (typical grower rate and soil-test-based rate). Results show subtle but possibly economically important differences in sugar yield, with knife-injected fluid UAN-based products performing best. These fluid N sources performed as well at soil-test-based N rates as at the higher N rates.
EFFECT OF WATER IRRIGATION QUANTITY AND COMPOST RATES ON SOME WHEAT VARIETIES UNDER SANDY SOIL CONDITIONS OF WEST DELTA REGION CONDITIONS.

Two field experiments were performed in EL-Husain farm, Giza governorate under the condition of sandy soil during 2009/2010 and 2010/2011 seasons, to study the impact of three amount of water irrigation 60, 70 and 90% from evapotranspiration rate (1461 m 3 ) and three compost rates 2, 4 and 6 ton/fad. on some growth, yield and its components of two wheat varieties (Sakha 93 and Gemmeiza 9). Results of the two seasons showed that ,by increasing the water irrigation amount from 60 to 70 or 90 % of the evapotranspiration (1461 m 3 ) led to gradually significant increases for leaf area/plant , dry weight /plant, No. of spikes/ m 2 ,weight of grains /spike , No. of grains/spike , weight of 1000 grains, grain yield /fad. and harvest index . Compost rates had significant impacts on previous characteristics, during the two experimental seasons. The best compost rate was (6 ton/fad) which gave the best results for these traits as compared with the lowest rate (2 ton/fad). Results revealed that, Gemmeiza 9 wheat variety exceeded Sakha 93 wheat variety significantly for above mentioned measurements during the two seasons. As for the first and second order interactions between the tested factors, results in the two trial seasons revealed that, most of the interactions had significant effects on that character. It wealthy mentions that significant interaction effect was found between the three factors under testing during the two seasons. The highest values for previous characters were obtained by sowing Gemmeiza9 with adding irrigation quantity of 90% from evapotranspiration and practicing 6 ton compost per fad. weight 1000
Regeneration of bulblets on bulb scale segments of hyacinth in vitro.

In vitro culture was applied to study the regeneration and growth of bulblets on bulb scale segments of the hyacinth cv. 'Pink Pearl'. Particular attention was paid to plant factors, while also the effect of temperature, light and darkness was investigated. The influence of the duration of dry storage at 25 °C after harvest, studied from July till November, on the number of regenerated bulblets is small; bulblet growth, however, is optimal during the first weeks of October. When individual bulbs of the same harvest and size are compared, great differences in both regeneration ability and bulblet growth occur. A comparison of bulb scales demonstrates that the number of regenerated bulblets is not influenced by the scale number, but that bulblet growth is much better on bulb scales 7 to 18 as compared with bulb scales 1 to 6. Both regene­ ration and growth of bulblets are strongly promoted when the expiants are taken out of the proximal parts of a scale instead of the distal parts. When the length of proximal expiants is increased, both regeneration and growth are promoted. Optimal regeneration and bulblet growth are obtained when the expiants are placed inverted on the culture media. Although the speed of regeneration increases by raising the temperature from 8.8 to 24.8 °C, the number of bulblets per expiant is optimal at 13 °C, whereas optimal bulblet growth is obtained at 21.6 °C or at 24.8 °C. No differences in regeneration and growth of bulblets are observed when culture in continuous light is compared with that in darkness.
Dynamics of glass-forming liquids. IV. True activated behavior above 2 GHz in the dielectric α-relaxation of organic liquids

We have measured the dielectric relaxation of butylbenzene and of the glass-former propylbenzene in the frequency range 10−2 Hz to 2×1010 Hz in order to characterize the variation of relaxation times with temperature for these low loss liquids. Additionally, salol has been remeasured above 1 GHz with improved resolution. Using the sensitive data representation [−dlog10(fmaxHz)/d(1/T)]−1/2 vs 1/T we find demarcation temperatures TA, at which the temperature dependence changes from a Vogel–Fulcher type law within the limits TB⩽T⩽TA to Arrhenius behavior for T>TA, corresponding to a position of the loss peak fmax>2 GHz. The activation energies derived from dielectric relaxation data for T>TA are associated with the energy of vaporization, Eη∝ΔEvap. A comparison of dielectric relaxation times τD to viscosity data in this wide range of temperatures suggests the relation τD∝η/T rather than τD∝η.
High level ab initio studies on the excited states of HOCO radical

The HOCO radical has a ground (X 2A′) and two lowest 2A″ excited states that are located using the CCSD(T) level of theory with the cc-pVDZ and cc-pVTZ basis sets. The harmonic frequencies are calculated at the CCSD(T) level of theory with the cc-pVDZ basis set. The vertical excitation energies for the 2 2A′, 3 2A′, 1 2A″, and 2 2A″ states of HOCO are obtained at the MRCI level of theory with the cc-pVTZ and aug-cc-pVTZ basis sets. The first excited state (1 2A″) is calculated to be 70.7 kcal mol−1 above the ground state for trans-HOCO. Comparisons are made between the excited states of HOCO and HCO. It is demonstrated that the HOCO states are not similar to those of HCO.
Equation of state of liquid Fe–17 wt%Si to 12 GPa

Equation of state (EOS) of liquid Fe–17 wt%Si has been investigated at a temperature of 1773 K and pressures up to 12 GPa by the sink/float technique using composite spheres. The EOS of liquid Fe–17 wt%Si, in the form of the second order Birch–Murnaghan equation, produces K 0T=68±2 GPa when K′0T=4.0. Considering the effect of temperature and pressure on K 0T, extrapolation of this EOS to Earth's outer core conditions reveals that the addition of Si to liquid Fe decreases its density ρ and increases its compressional wave velocity V P , indicating that Si is a possible light element candidate in the outer core. The possible existence of Si in the cores of other planetary bodies is also discussed.
Investigations of Nonlinear Forces in Metal Cutting

During chatter in metal cutting the tool vibration would cause a variation in "effective" rake angle of the cutter, generating a force variation that depends on penetration rate: a kind of process damping. This effect is examined for forces computed both from a theoretical Merchant-type model, and from a numerical database of forces for metal cutting constructed from a suite of AdvantEdge simulations. Since the tool can potential vibrate at any angle relative to the workpiece, the forces for varying angle of vibration were computed, and the dynamic stability consequences considered. It is found that the two models lead to similar forces for varying vibration angle, at least through first order. Depending on the vibration angle the force will either increase or decrease with both chip load and penetration rate, reflecting the difference in the effect on the chipload and cutting speed with varying vibration direction. Second order terms in penetration rate were different in the two formulations, possibly a result of approximations used in the calculations involved in the Merchant formulation. Dynamically this means that the linear stability of each vibration angle is the similar for the two models, while the differences in nonlinear terms results in differences in the type Hopf bifurcation observed upon loss of stability.
Effect of depth and lime or phosphorus fertilizer applications on the soil solution chemistry of some New Zealand pastoral soils

Thirteen trails were sampled to investigate the effects of depth, or the surface application of lime and phosphorus (P) fertilizer, on solution composition. Soil solutions were extracted by centrifuge from field moist soils within 24 h of sampling. Solution Ca, Mg, Na and K, Al, Mn and Fe concentrations generally decreased and Al, Mn and Fe concentrations generally increased with depth; although exceptions occurred. The largest decrease occurred in the first 25-50 mm of soil. Higher solution Al concentrations occurred in a band at a depth of between 50 and 100 mm in some soils. Lime generally increased solution pH and solution Ca, Mg and HCO3 concentrations, and reduced solution Al, Fe and Mn concentrations in the topsoils. In one soil (Matapiro silt loam) 2 years after lime was applied, lime increased solution pH down to a depth of 100 mm, Ca and HCO3 down to 75 mm and Mg down to 50 mm. Lime also decreased solution Al and Mn down to 75 mm and Fe down to 50 mm. In one series of trials, lime increased solution Ca concentrations at a depth of 50-100 mm 4 years after application in six out of the eight sites. In the same trial series, the application of P fertilizer increased solution P concentrations at 0-50 mm from a mean of 5 µM in the no-added P plots up to a mean of 56 µM at the highest P rate. The highest solution P concentration recorded was 194 µM. The increase in solution P concentrations for a given application of fertilizer P varied from 0.05 to 1.03 µM P per kg P ha-1 applied. Maximum pasture yield and 90% maximum yield occurred when solution P concentrations were about 28 and 14 µM respectively. Solution P concentrations determined from P adsorption isotherms were not a good indicator of solution P concentrations measured in soil. Solution pH was higher than soil pH (1:2.5 soil:water ratio, 2 h equilibration) with a solution pH of 6.0 corresponding to a soil pH in water of about 5.2.
High-temperature studies of UO2 and ThO2 using neutron scattering techniques

A review of the results of recent neutron diffraction, coherent diffuse and inelastic scattering experiments on UO2 and ThO2 at temperatures between 293 K and 2930 K is given. These provide direct evidence for thermally induced Frenkel oxygen lattice disorder at temperatures > 2000 K and give data on the lattice expansion, ionic potentials and elastic stiffness constants to 2930 K for the first time. The results are important for an understanding of the thermophysical behaviour of UO2 and contribute to the data base of thermodynamic properties of UO2.
The thermomechanical properties of aromatic polymers

High performance aromatic polymers such as PEEK and PEK are widely used in composite and related applications. However, their high rate thermomechanical properties are not well understood. This thesis describes a series of investigations into their mechanical behaviour over a large range of strain rates (10-3 -103 s-1 ) and temperatures (20-200° C) which were carried out in order to more fully understand their properties and to assess the applicability of standard polymer property models to their behaviour. The experiments involved the design and construction of two novel sets of high rate test apparatus. These were a cross-bow based system which enabled high strains to be obtained at strain rates of 103 s-1 and a drop-weight system based around a high speed camera which enabled direct measurements of radial strain and observation of sample behaviour to take place. The cross-bow apparatus incorporated a laser-photodiode system to enable direct strain measurements to be made and thus had an advantage over conventional Hopkinson bars of direct, rather than derived, strain measurements with a sufficiently energetic projectile to produce large deformations. These systems were used in addition to standard hydraulic ram and dropweight equipment. A heater unit to enable tests to be carried out over the desired temperature range was also designed and constructed and used with all the above systems. A comprehensive set of Differential Scanning Calorimetry and X-ray tests were carried out on samples before and after mechanical testing in order to provide structural data to aid the interpretation of the mechanical test results
The phenanthrene‐sorptive interface of an arable topsoil and its particle size fractions

Sorption of organic chemicals in soil is affected by the properties and availability of surfaces. These surfaces are composed of diverse mineral, organic and biological components, forming a soil's ‘biogeochemical interface’. Phenanthrene was used to probe the hydrophobic sorptive capacity of the interface of an arable soil. Batch sorption experiments were carried out with the bulk soil as well as the fine (0.2–6.3 µm) and coarse (6.3–63 µm) particle size fractions of two arable topsoil samples with different organic matter (OM) contents from a Eutric Cambisol. The specific surface area (SSA) of the bulk soil and particle size fractions was determined by BET‐N2 and EGME sorption. OM composition was characterized by solid‐state 13C NMR spectroscopy. No clear relationship was found between phenanthrene sorption and SSA. We conclude that phenanthrene probes a specific fraction of the soil interface that is not well represented by the traditional methods of SSA detection such as BET‐N2 and EGME sorption. The sorption behaviour of phenanthrene may therefore provide a useful additional tool to characterize the specific affinity of the soil biogeochemical interface for hydrophobic molecules. Sorption capacity for phenanthrene increased after particle‐size fractionation, indicating that the reduced availability of the interface caused by the aggregated structure is important for the sorptive capacity of a soil. This should be considered when projecting data obtained from extensively treated and fractionated samples to the actual interaction with biogeochemical interfaces as they are present in soil.