Miracle-dz/UniFAR-FTUs huggingface dataset:
Vapor―Liquid Equilibrium Data for the Nitrogen + n-Decane System from (344 to 563) K and at Pressures up to 50 MPa

A static-analytical apparatus with visual sapphire windows and pneumatic capillary samplers has been used to obtain new vapor−liquid equilibrium data for the N2 + C10H22 system over a wide temperature range from (344 to 563) K and at pressures up to 50 MPa. Equilibrium phase compositions and vapor−liquid equilibrium ratios are reported. The experimental data were modeled with the PR (Peng−Robinson) and PC-SAFT (perturbed-chain statistical association fluid theory) equations of state by using one-fluid mixing rules and a single temperature-independent interaction parameter. Results from the modeling effort showed that the PC-SAFT equation was superior to the PR equation in correlating the experimental data of the N2 + C10H22 system over the whole temperature, pressure, and composition range studied.
Studies on the Extractive Constituents of the Bark of Libocedrus Formosana Florin. I. The Structure of 6α‐Hydroxy‐7‐0X0‐Ferruginol

From the acetone extractive of the bark of Libocedrus formosana Florin, a new phenolic diterpene, C20H23O3, was isolated. Its structure was elucidated as 6α-hydroxy-7-oxo-ferruginol (Ia).
A New 3D Organization of Mesopores in Oriented CTAB Silica Films

Highly organized and textured CTAB templated silica films are made by the spin-coating technique. The HRTEM structural characterization of these films clearly shows the formation of a 3D hexagonal structure (P63/mmc space group) due to the stabilization of a new phase which does not belong to the phase diagram of CTAB in water. This probably results from the formation in dynamic conditions of a 3D-hexagonal packing of spherical micelles separated by polymeric silica walls. The shrinkage of spin-coated films during the drying leads to values of the c/a hexagonal ratio weaker than the one corresponding to the close packed hexagonal structure. This 3D organization is maintained after removal of the surfactant molecules by calcination, leading to a new mesoporous material.
The Role of Trait Mindfulness and Relationship Quality toward Depression Symptom in Pregnant Women

: During the period of pregnancy there are many changes that occur in women . The changes that can lead to symptoms of depression during the period of pregnancy. Some of the results of research related trait mindfulness and quality of relationships may lower the level of symptoms of depression. By because it, research it aims to examine the role trait mindfulness and the quality of the relationship to depressive symptoms in pregnant women. The study is using a tool measuring the Edinburgh Postnatal Depression Scale (EPDS), The Five- Facet Mindfulness questionnare (FFMQ), and The Perceived Relationship Quality Components (PRQC). Method: This research was conducted with a quantitative approach with a correlational design. Participants in the study it was 65 mothers pregnant who have a score cut-off symptoms of depression >9, housed live in the Greater Jakarta, and selected based on the technique of accidental sampling . Results: The study showed that there is a role -dimensional non-judging on the trait of mindfulness as well as the quality of the relationship that is experienced by mothers pregnant which has a value of 9 % against the symptoms of depression during the period of pregnancy.
Spatio-temporal variation of total mercury in precipitation in the largest industrial base in China: impacts of meteorological factors and anthropogenic activities

A 12-month investigation of total mercury (Hg) in event-based precipitation was performed in China's biggest industrial base, Yangtze River Delta, a hotspot of anthropogenic Hg emissions. Concentrations of total Hg in precipitation were measured, and the spatial and temporal variations of Hg were addressed. The results show that Hg concentrations (median=92 ng L−1) are comparable to the reports of other cities in China, but higher than those of remote sites. In spatial, Hg levels are significantly higher in urban and suburban precipitation than in rural samples. The pH, precipitation depth and antecedent drying period appear to be potential factors influencing Hg concentrations in precipitation, but in general no strong correlation was found between Hg and individual parameters. A seasonal variation of Hg in precipitation was found, and the concentrations in winter are generally higher, possibly associated with fossil fuel combustion. In addition, the dominant wind direction was found to be a factor influencing seasonal pattern of Hg by atmospheric transport of air pollutants. The backward trajectories suggest that local sources, for example, emissions from coal combustion and industry activities, are possibly important contributors to Hg in precipitation.
Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe–N4 based oxygen reduction catalysts

The development of inexpensive non-precious oxygen reduction catalysts has become one of the most important efforts in polymer electrolyte membrane fuel cells. In this report, we synthesized a non-precious electrocatalyst from a single precursor, iron(III) diethylene triaminepentaacetate, using a heat-treatment effect to prepare an active catalyst. A series of catalysts were prepared at different temperatures leading to different degrees of graphitization, heteroatom content and activity. In 0.1 M KOH electrolyte solution, the oxygen reduction reaction (ORR) onset potential of the HNCS71 catalyst was as high as 0.97 V, and half-wave potentials were only 20 mV lower than those for Pt/C. X-ray absorption measurements of the Fe K-edge showed the structure of Fe–N4 centers, formed in HNCS71, which were responsible for the ORR activity. An alkaline exchange membrane fuel cell fabricated with HNCS71 as the cathode was tested in a H2–O2 single cell and showed a maximum power density of ∼68 mW cm−2. The 100 hour fuel cell durability test of the HNCS71 cathode showed a decay in the current density of about 14% at 0.4 V. Therefore, the HNCS catalyst appears to be a promising new class of non-precious catalysts for fuel cell applications.
Role of O(1D) in the oxidation of Si(100)

Oxidation of silicon with neutral atomic oxygen species generated in a rare gas plasma has recently been shown to produce high-quality thin oxides. It has been speculated that atomic oxygen in the first excited state, O(1D), is a dominant reactive species in the oxidation mechanism. In this study, we investigate the role of O(1D) in silicon oxidation in the absence of other oxidizing species. The O(1D) is generated by laser-induced photodissociation of N2O at 193 nm. We find that, at 400 °C, O(1D) is effective in the initial stages of oxidation, but the oxide growth rate decreases dramatically past 1.5 nm. Oxide films thicker than 2 nm were not achieved regardless of oxidation time or N2O partial pressure (0.5–90 mTorr), indicating O(1D) cannot be a dominant reactive species in thicker rapid oxidation mechanisms. We suggest that quenching of O(1D) to O(3P) (ground state) during diffusion through thicker oxides results in drastically slower oxidation kinetics. In contrast, oxidation with a vacuum ultraviol.
Solvent Extraction of Phosphoric Acid with Long Chain Tertiary Amines

Solvent extraction of phosphoric acid with Alamine 336 and tri-n-octylamine in toluene has been investigated. The activity of phosphoric acid is expressed as a polynomial of ionic strength and Bromley's model for electrolyte solutions is employed for calculation of ionic activity coefficients. Three species R3N (H3P04) n with n = 1, 2 and 3 in the organic phase are taken into account for explanation of the distribution equilibria. The extraction constants have been determined as log K11 = 2.05, log K12 = 3.61 and log K13 = 3.84 respectively. Aggregation and other non-ideal behaviour in the organic phase are described by letting the corresponding activity coefficient quotients be a function of the total concentration of acid in the organic phase.
A Procedure to Predict Subcooled-Water-Flow-Boiling CHF in Uniformly Heated Tubes for High-Heat-Flux Applications

A model to predict critical heat flux (CHF) for high-heat-flux subcooled flow boiling in uniformly heated tubes is proposed. The present CHF model is based on the mechanism of wall-attached bubble coalescence. To take into account the enhanced condensation due to high subcooling and high mass velocity in small-diameter tubes, a mechanistic approach is adopted to evaluate the nonequilibrium flow quality and void fraction in the subcooled water flow boiling. Comparison of the model predictions against ~3100 subcooled water CHF data shows relatively good agreement over a wide range of parameters that covers the operating conditions of fusion reactor components. The operating ranges of the present database cover 0.33 ≤ D ≤ 37.5 mm, 0.002 ≤ L ≤ 4 m, 0.1 ≤ P ≤ 20 MPa, 0.37 ≤ G ≤ 134 Mg/m2·s, 49 ≤ Δhsub,in ≤ 1659 kJ/kg, –1.25 ≤ xem < 0, and 1.05 ≤ qCHF ≤ 276 MW/m2.
Removal characteristics of H2S by Thiobacillus novellus CH 3 biofilter in autotrophic and mixotrophic environments

Abstract Thiobacillus novellus, like other facultative chemoautotrophs, possesses the unique ability to grow autotrophically as well as heterotrophically. Since in nature the bacteria are likely to encounter different environments, i.e., autotrophic, heterotrophic, or mixotrophic conditions, it is of considerable interest to determine the removal characteristics of H2S in different environments. Thiobacillus novellus CH 3 was isolated from piggery wastewater and used to remove H2S gas from air in this study. The results indicated that the Thiobacillus novellus biofilter under mixotrophic conditions possessed broad adaptability of pH (5 ‐ 10) compared to the one under autotrophic conditions. In a batch experiment high H2S concentration (>140 ppm) inhibited the enzymatic activity, thus the H2S removal was limited by the reaction rate rather than the diffusion rate at diluted H2S concentration. During the environmental shock experiment, 99.5% of the H2S content from the inlet was eliminated in a mixotrophic .
Conversão e balanço energético de sistemas de produção com integração lavoura-pecuária, sob plantio direto - DOI:10.5039/agraria.v8i1a1392

A integracao lavoura com pecuaria (ILP) pode proporcionar vantagens ao agricultor, como a maior diversificacao de producao, o menor consumo de energia e o menor risco economico. O objetivo deste trabalho foi avaliar a conversao e o balanco energetico em sistema de producao ILP, sob sistema plantio direto (SPD), de 1997 a 2008, em Passo Fundo, RS. Os tratamentos consistiram de cinco ILPs: sistema I - trigo/soja, aveia branca/soja e ervilhaca/milho; sistema II - trigo/soja, aveia branca/soja e pastagem de aveia preta +ervilhaca/milho; sistema III - pastagens perenes da estacao fria (festuca + trevo branco + trevo vermelho + cornichao); sistema IV - pastagens perenes da estacao quente (pensacola + aveia preta + azevem + trevo branco + trevo vermelho + cornichao) e sistema V - alfafa para feno. Ressalta-se que no verao de 2002, nos sistemas III, IV e V a lavoura retornou a pastagem e a pastagem a lavoura. O milho foi a especie que apresentou o maior retorno energetico em relacao as demais culturas produtoras de graos e as pastagens de inverno. Os sistemas I, III, IV e V foram os mais eficientes na conversao da energia. Os sistemas de producao ILP sob SPD foram energeticamente viaveis, pois, mostraram conversao e balanco energetico positivo.
The Effects of Expressive Writing on Anxiety, Mathematics Anxiety, Stress, Cognitive Processes and Psychological Processes on the Virginia Standards of Learning (SOL) on a Sample of Urban High School Students Failing Mathematics

The Effects of Expressive Writing on Anxiety, Mathematics Anxiety, Stress, Cognitive Processes and Psychological Processes on the Virginia Standards of Learning (SOL) on a Sample of Urban High School Students Failing Mathematics Claudia L. Hines Old Dominion University, 2011 Director: Dr. Nina W. Brown High school students who fail one or more mathematics' classes tend to be more likely to fail the Virginia Standard of Learning (SOL) tests and thus delaying their graduation. The purpose of this study was to examine the effects of expressive writing on general anxiety, math anxiety, stress, cognitive processes and psychological processes on the Virginia Standards of Learning (SOL) on a sample of urban high school students failing mathematics. The participants (n=93) male and female students in grades 9-12, ranged in ages from 14 to 19 years of age, from various socio-economic backgrounds. The intact classes were used to reduce disruption of the instructional process and to encourage teacher cooperation. The experimental group (n=54) wrote on a value latent topic and the control group (n=39) wrote on a neutral topic. When compared to the control group, statistically significant results revealed the experimental group reported lesser levels of anxiety after the writing intervention. Both the experimental group and the control group had a reduction in math anxiety after the expressive writing intervention. During the SOL geometry mathematics test, the experimental group had a 52% pass rate and the control group had a 49% pass rate.
Low-Temperature Heat Capacity and Glassy Behavior of Lysozyme Crystal†

Heat capacities of tetragonal hen egg-white lysozyme crystals containing different amounts of water have been measured in the temperature region between 8 and 300 K. A broad glass transition was observed at about 150 K for the crystals with more than 24.0 wt % water content. These crystals also exhibited a spontaneous exothermic effect due to crystallization of the supercooled water contained in the crystals and melting process of the water above the glass transition temperature. The crystals containing 13.6 and 7.4 wt % of water gave rise to only a glass transition at 165 and 218 K, respectively. The fully dried crystal showed no thermal anomaly in the temperature up to 300 K. The amounts of the freezable and unfreezable water were estimated from the enthalpies of fusion of the crystal water. The water content dependence of the glass transition temperature and the magnitude of the excess heat capacity suggest that the observed glass transition arises from the cooperative motion between the segments of th.
First-principles calculations atomic structure and elastic properties of Ti-Nb alloys

Elastic properties of Ti based \beta-alloy were studied by the method of the model structure first principle calculations. Concentrational dependence of Young modulus for the binary \beta-alloy Ti-Nb was discovered. It is shown that peculiarities visible at 15-18% concentrations can be related to the different Nb atoms distribution. Detailed comparison of the calculation results with the measurement results was done. Young modulus for the set of the ordered structures with different Nb atoms location, which simulate triple \beta-alloys Ti-29.7%Zr-18.5%Nb and Ti-51.8%Zr-18.5%Nb have been calculated. The results of these calculations allowed us to suggest the concentration region for single-phase ternary \beta-phase alloys possessing low values of Young's modulus.
Poly(ethylene glycol‐β‐cyclodextrin) gels: Synthesis and properties

A new hydrogel that combines poly(ethylene glycol) and β-cyclodextrin has been synthesized. Both components are linked by using a diisocyanate (HDMI), first by end-capping the poly(ethylene glycol) with isocyanate groups an then reacting it with β-cyclodextrin, forming urethane links. Hydrogels of molar compositions (β-cyclodextrin/poly(ethylene glycol)) ranging from 1/4 to 1/14 have been synthesized. These hydrogels swell quickly and their water contents depend upon temperature. The gels are temperature resistant and show an elastomeric behavior. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 1162–1166, 2006
Low platinum loading electrospun electrodes for proton exchange membrane fuel cells

An experimental study was performed to evaluate the utility of electrospun carbon nanofiber supports for sputtered platinum catalyst in proton exchange membrane fuel cells. The performance of the sputtered nanofiber supports was similar to that of sputtered commercial gas diffusion layers in single cell fuel cell tests. However, sputtered platinum electrodes performed significantly worse than commercial thin film electrodes due to high activation and concentration voltage losses. Cyclic voltammetry and rotating disc electrode experiments were performed in order to evaluate the influence of platinum loading and particle size on the electrochemical active area and oxygen reduction performance of the sputtered platinum. Active area per weight catalyst decreased with sputtering time, and the oxygen reduction activity slightly increases with increasing sputtering time. Both of these effects are thought to be due to increasing platinum particle size as sputtering time is increased. Thesis Supervisor: Yang Shao-Horn Title: Assistant Professor of Mechanical Engineering
Volatile and nonvolatile chemical composition of some date fruits (Phoenix dactylifera L.) harvested at different stages of maturity

Summary Physico-chemical and aroma volatile compositions of three date palm cultivars were studied throughout fruit maturation (besser, rutab and tamr stages) during 2008 harvest season. The studied parameters varied significantly through the different stages, with some variations also depending on the cultivar. Length and width of the three types of dates showed a progressive decrease during ripening. The pH level, total sugars and ash contents significantly increased up to tamr stage. Conversely, moisture, lipid and protein contents decreased. The profile of the volatile aroma compounds was evaluated using solid-phase micro-extraction. Sixty-nine compounds were detected during maturation, accounting from 98.5% to 99.6% at besser, 93.1% to 99.2% at rutab and 94.3% to 98.4% at tamr stages of the total identified volatiles. The present study sheds more light on chemical characteristics of the studied cultivars that can be used in many industrial processes.
TLC and GC Analysis of the Essential Oils of Stachys Species

Species of the Lamioideae subfamily of the family Lamiaceae, including Stachys species, do not contain much essential oil. The first stage of studying the volatile components of Stachys species was characterization of n-hexane extracts by TLC, with sabinene, limonene, linalool, and β-caryophyllene as test materials. On the basis of these results we then studied the volatile compounds by use of GC-FID and GC-MS. By examination of the TLC plates, use of Kováts retention indices, and MS library search we identified components of essential oil fractions obtained from Stachys officinalis II. (L.) Trev. , Stachys alpina L. , Stachys macrantha (Koch) Stearn, Stachys palustris L. , Stachys recta L. subsp. recta, and Stachys annua L. (from Vácrátót) by vapor distillation in accordance with Hungarian Pharmacopoeia VII.
Comparative study of various methods for thermal degradation of poly[3‐dimethyl(methacryloyloxyethyl) ammonium propanesulfonate]

The comparative study of thermal degradation for poly[3-dimethyl(methacryloyloxyethyl)ammonium propanesulfonate] [poly(DMAPS)] was studied by various methods under different conditions. The reaction order, the activation energy, and the preexponential factor were evaluated from thermal gravimetric curves. The activation energy and the preexponential factor increase with increasing heating rate in a nitrogen atmosphere and decrease with increasing heating rate in air. The activation energy is higher in an air atmosphere at lower heating rates (5, 10, 20°C/min), for any of the methods used.
Orality in Environmental Planning

An often-neglected aspect of interactive policy making is the symbolic interaction between professionals and citizens, specifically the way they speak, the kind of orality that is involved. The orality of officials is text bound and texts on the environmental attain a firm position in the discourse of these officials, quite different from the orality of citizens. The characteristics of orality and literacy, from a communicative viewpoint, vary considerably. In literacy details and figures matter; in orality it is the intention of the speaker and the gist of the story that counts most. By bringing in a large amount of literacy in oral presentations, officials spoil the functions of orality, its effects on learning, its creative potential, the way how, via stories, many people can get involved or how trust is developed. Officials can conquer the orality of the people, they can cope with it in a strategic way or they can deal with it as a valuable asset in policy making. For this officials have to rethink the way they speak. Copyright © 2002 John Wiley & Sons, Ltd. and ERP Environment
Dog poisoning with Furadan 35-ST (carbamate insecticide).

The first case of poisoning of a dog with Furadan 35-ST in Serbia is described. The active ingredient of Furadan 35-ST is carbofuran (2,3-dihydro-2,2-dimethyl-7- benzofuranyl methyl carbamate), a carbamate insecticide, acaricide and nematocide. This highly poisonous substance is classified by the World Health Organisation into Class 1 b and in Serbia into Group 1 of The List of Poisons. Pathological assessment revealed hyperaemia and degenerative and necrotic changes in the liver, kidneys and heart. In addition, lysis of the nuclei in the motor neurons, loss of tigroid substance and pericellular oedema in the ventral horns of the spinal cord, and acute pancreatitis were found. In addition to the non-specific changes (hyperaemia, degenerative and necrotic changes in the parenchymal organs), the ones in the ventral horns of the spinal cord and acute pancreatitis may lead to carbamate poisoning being suspected. The diagnosis was established on the grounds of toxicological-chemical conformation of carbofuran by means of GC-MS in addition to the macroscopic, microscopic findings in tissue samples taken from the stomach and the liver, which confirmed the suspicion of the dog having been poisoned with the carbamate insecticide. In the current case the results of the diagnostic procedures provided foundations for the initiation of criminal proceedings.
Does the Ammonium Fixation Capacity of Soils Have a Significant Effect on the Nitrogen Nutrition of Wheat?

Pot experiments were conducted on three soils differing in their ammonium (NH4 +) fixation capacity [high = 161 mg NH4-nitrogen (N) kg−1 soil; medium = 31.5 mg NH4-N kg−1 soil; and no = no NH4-N was additionally fixed], and the effect of N fertilizer forms and doses on wheat (Triticum aestivum L.) was investigated. Grain yields responded to almost all forms of N fertilizer with 80, 160, and 240 kg N ha−1 in the high, medium, and no NH4 + fixing soil process, respectively. Agronomic efficiency of applied N fertilizers was significantly greater in the no NH4 + fixing soil. Thousand grain weights (TGW) of wheat grown on the high and medium NH4 + fixing soil decreased with increasing N. Grain protein increased with increasing NH4 + fixation capacity. Nitrogen doses and the forms of N fertilizers affected grain protein at a significance level. The combination of urea + ammonium nitrate (NH4NO3) was most effective in increasing grain protein content.