Miracle-dz/UniFAR-FTUs huggingface dataset:
Spectroscopic properties of self-assembled lateral quantum dot molecules

In the 20 century the first transistor was invented and the first computing device based on it was built. Since then, people have been looking for various ways to reduce the size and cost of the electronic devices used in computers, cell phones and other electronic products. When the feature sizes of these devices reach the nanometer scale, the deterministic properties of materials are replaced by the uncertainty caused by quantum effects. This brings challenges to the improvement of traditional devices but also presents opportunities for the development of electronics based on quantum mechanics. Quantum dots (QDs), semiconductor materials with quantum confinement in all three dimensions, are a very important material platform for the implementation of quantum mechanical devices. III-V semiconductor self-assembled quantum dot molecules (QDMs), consisting of two closely-spaced QDs, are of great interest as potential components for nextgeneration optoelectronic devices. One of the attractive features of QDMs is the ability to manipulate, in-situ, the formation of delocalized molecular states with unique optoelectronic and spin properties. The structure, geometry and compositional profile of a QDM together determine the electronic and optical properties of that QDM. Lateral QDMs (LQDMs), in particular, consist of two or more QDs placed close to each other with a molecular axis perpendicular to the growth direction of the heterostructure, creating a QD complex structure with outstanding properties. LQDMs have good scalability and provide the opportunity to independently control charge occupancy and quantum coupling. LQDMs grown by molecular beam epitaxy (MBE) using partial GaAs capping and in-situ annealing of single InAs QDs create LQDMs with a small inter-dot spacing and relatively homogeneous geometry. However, there has been substantially less work on LQDMs than in Vertical QDMs (VQDMs) because
Abraham model correlations for solute transfer into tributyl phosphate from both water and the gas phase

Solubilities are reported for acenaphthene, fluoranthene, benzil, 9-fluorenone, trans-stilbene, phenothiazine, 2-methylbenzoic acid, 3-methylbenzoic acid, 4-chlorobenzoic acid, 3-nitrobenzoic acid, 4-nitrobenzoic acid, 3,4-dichlorobenzoic acid, 3,5-dinitrobenzoic acid, 2-chloro-5-nitrobenzoic acid, and 4-chloro-3-nitrobenzoic acid dissolved in tributyl phosphate at 298 K. The experimental solubility data, combined with published infinite dilution activity coefficients and Henry’s law constants, are used to derive Abraham model correlations for predicting molar solubility ratios, gas-to-liquid partition coefficients, and water-to-liquid partition coefficients of organic solutes and inorganic gases dissolved in tributyl phosphate. The derived Abraham model equations describe the measured experimental values to within 0.15 log units or less.
The Effect of Some Parameters of Electrolysis on Apparent Density of Electrolytic Copper Powder in Galvanostatic Deposition

The investigation on some properties of electrochemically deposited copper powders from copper sulphate - sulphuric acid has been performed. Relations between conditions of electrolysis of powder storage, apparent density as well as hydrodynamic regime, temperature and deposition time are established. It is shown unambiguously that apparent density depends on conditions of powder production as well as of duration of electrodeposition;it increased on decreasing of working current density and with increasing of copper ion concentration, temperature, electrolyte circulation rate and brush down interval.
Ultraviolet and visible absorption spectroscopy of some energetic molecules in the solid state

Abstract The solid state absorption spectrum in the range 190 to 550 nm has been obtained for four common high explosives; HNS, RDX, HMX and PETN. Studies were performed with HE crystals embedded in potassium chloride disks and compared to spectra in acetonitrile solution. It was observed that the solid state spectra generally have red shifted absorption maxima and extended red edge absorption compared with the solution phase spectra. These effects are attributed to inter molecular stabilization of the energetic molecules in the solid phase.
Synthesis, spectroscopic, thermal, and biological activities on solvatochromic mixed ligand copper(II) complexes

A series of solvatochromic copper(II) mixed ligand complexes of 3-acetylcoumarine (3-ACoum) and dinitrogen bases (L), with the general formula Cu(3-ACoum)(L)Xn ; where n = 2, L = N,N,N′,N″-tetramethylethylenediamine (tmen), 1,10-phenanthroline (phen) and 2,2′-bipyridine (bipy) and X = , or , have been synthesized and characterized by elemental analysis, IR, UV–Vis, electron spin resonance spectra, magnetic susceptibility, and conductivity measurements. The d–d absorption bands of tmen-complexes in weak donor solvents show the formation of square planar or square pyramidal geometries, while strong donor solvents yield octahedral complexes. The observed solvatochromism is mainly due to the solute–solvent interaction between the chelate cation and the solvent molecules, and the spectra displayed the possibility of using these complexes as Lewis base indicators. Thermogravimetric analyses (TGA)/differential thermal analysis (DTA) as well as the kinetic parameters (ΔH #, ΔS #, and ΔG #) of thermal decomposition stages of nitrate complexes have been calculated. Furthermore, the antimicrobial activity of the ligand and its complexes as inhibiting agents have been screened in vitro against two kinds of pathogenic bacteria and plant pathogenic fungi.
Mobilization of aluminium, iron and silicon by Picea abies and ectomycorrhizas in a forest soil

Weathering of soil minerals is a key determinant of ground and surface water quality and is also important in pedogenic and rhizosphere processes. The relative importance of biotic and abiotic studies in mineral weathering, however, is poorly understood. We investigated the impact of Picea abies seedlings, an ectomycorrhizal fungus and humic acid on the solubilization of aluminium (Al), iron (Fe) and silicon (Si) in an E horizon forest soil over 10 months. Elemental budgets were constructed based upon losses in drainage water, accumulation in plants and changes in the pools of exchangeable ions. Plants and mycorrhizas or both had a significant effect on the total amounts of Al, Fe and Si mobilized from the soil. Significantly larger amounts of Al and Fe were recovered in plants than those lost in drainage water, whereas the opposite trend was true for Si. The continual addition of dissolved organic matter to the soil in the form of humic acid had an effect only on mobilization of Fe, which increased due to larger plant uptake and an increase in the exchangeable pool. The mobilization of Fe and Si were positively correlated with hyphal length, soil respiration and concentrations of oxalate in the soil solution, and mobilization of Al was strongly correlated with plant weight. Scanning electron microscopy revealed that most fungal hyphae were associated with mineral surfaces with little occupation of cracks and micropores within mineral grains. Evidently ectomycorrhizas have important impacts on mineral dissolution and the chemistry of forest soils.
Effect of Exchange Coupling on the Spectra of Transition Metal Ions. The Ligand Field Spectrum and Crystal Structure of CsCrCl3

The single crystal polarized absorption spectra of CsCrCl3 and of CsCrCl3 doped into CsMgCl3 have been measured and interpreted in terms of an octahedral ligand field. The intensities of the spin forbidden transitions are found to be very dependent on the chromium ion concentration. In addition, an absorption band which is strongly polarized along the crystallographic c axis is observed at approximately twice the energy of the 10 Dq band. Both of these effects are attributed to magnetic coupling between the chromium ions; the anomalous band is assigned to a ``double excitation'' of the 5E→5T2 transition on coupled pairs of ions. The crystal structure of CsCrCl3 has also been determined. The lattice is hexagonal with P63mc the most probable space group. The lattice constants are a=7.256(3) and c=6.224(3) A, with ρobs=3.24(4) g/cm3 and ρcalc=3.40 g/cm3. Least‐squares refinement, based on F, of counter data has led to a final R index of 0.042. The main structural feature is a linear array of [CrCl6]−4 octahe.
Surfactant enhanced perchloroethylene dissolution in porous media : The effect on mass transfer rate coefficients

The effect of a surfactant on the mass transfer rate coefficient, K, during the dissolution of a nonaqueous phase liquid (NAPL) was investigated using batch and column experiments. Batch experiments were performed at several surfactant concentrations holding the interfacial area between perchloroethylene (PCE) and the surfactant solution constant. Porous media experiments were also conducted at the same surfactant concentrations and an unknown interfacial area to evaluate the effect of the surfactant on the mass transfer rate coefficient, K, during dissolution of PCE from residual saturation to zero saturation. The experimental results show the following: (1) The addition of surfactant at concentrations below its critical micelle concentration (CMC) yields almost no difference in mass transfer rate coefficient despite a 3-fold decline in surface tension. (2) Above surfactant CMC, the presence of surfactant reduces the mass transfer rate coefficient. (3) Though a decrease in mass transfer rate coefficient.
In vitro antimycobacterial activity of the new quinolone OPC-17116

A newly synthesized quinolone, OPC-17116, was examined for its in vitro antimycobacterial activity. The MIC90s of OPC-17116 against various mycobacteria measured by the agar dilution method using 7H11 agar plates, were as follows: Mycobacterium tuberculosis, 0. 78ƒEg/ml; Mycobacterium kansasii, 25ƒEg/ml; Mycobacterium marinum, 100ƒEg/ml; Mycobacterium scroftilaceum, >100ƒEg/ml; Mycobacterium avium, 12. 5ƒEg/ml; Mycobacterium intracellulare, 12. 5ƒEg/ml; Mycobacterium fortuitum, 25ƒEg/ml; Mycobacterium chelonae subsp. abscessus, > 100ƒEg/ml; Mycobacterium chelonae subsp. chelonae, 100
Detection methods and intestinal adherence of non-O157 shiga toxin-producing Escherichia coli

Detection of Shiga toxin-producing Escherichia coli (STEC) in complex sample matrices remains challenging. In an attempt to improve detection, nonselective and selective enrichment broths were compared as follows: (1) trypticase soy broth (TSB) was compared with TSB plus novobiocin, vancomycin, rifampicin, bile salts, and potassium tellurite (TSB-NVRBT) for supporting growth of STEC in pure culture; (2) E. coli broth (EC), TSB, and TSB plus bile salts (mTSB) were compared for enrichment of STEC O26, O45, O103, O104, O111, O121, O145, and O157 (STEC-8) in inoculated cattle fecal samples; (3) EC, TSB, and mTSB were compared for the detection of STEC-8 in inoculated cattle fecal samples. Fecal samples were inoculated with wild-type STEC-8 or nalidixic acidor rifampicin-resistant derivatives of the same strains at 100, 1000, or 10,000 colony-forming units per gram (CFU/g) of feces. In pure culture, the mean STEC CFU/mL following enrichment in TSB was 1.17 log10 greater than that in TSB-NVRBT (P < 0.05). In inoculated fecal samples, EC enrichment yielded growth of STEC-8 (6.42 log10 CFU/g) that was significantly greater than in TSB (6.23 log10 CFU/g; P < 0.05), and numerically but not significantly greater than in mTSB (6.37 log10 CFU/g; P = 0.60). Wild-type STEC strains were detected in 43.8 % (21/48) of the samples enriched in EC and mTSB compared to 27.1 % (13/48) of the samples enriched in TSB (P = 0.15). Overall, STEC grew significantly better when enriched in EC compared to TSB. Modification of TSB by the addition of bile salts improved the growth and detection of STEC compared to TSB alone.
VALIDATED ZERO ORDER AND FIRST ORDER DERIVATIVE SPECTROPHOTOMETRIC METHODS FOR INVITRO ANALYSIS OF TENOFOVIR DISOPROXIL FUMARATE TABLETS USING AZEOTROPIC MIXTURE Original Article

Objective: To develop a simple and reliable derivative spectro photometric methods for the determination of Tenofovir disoproxil fumarate in bulk and pharmaceutical dosage forms. Methods: The solutions of standard and the sample were prepared in azeotropic mixture (methanol: water, 40:60 v/v). The quantitative determination of the drug was carried out with zero order derivative values measured at 260 nm and first order derivative values measured at 273 nm (n=6). Results: Calibration graphs constructed at their wavelengths of determination, were linear within the concentration range of 4-24 μg/mL (r² = 0.999 and r² = 0.998) for zero order and first order derivative spectro photometric method. Conclusion: No significant difference between the performance of the proposed methods regarding the mean values and standard deviations and is suitable for the routine quality control application of Tenofovir disoproxil fumarate in pharmaceutical formulations.
IMPACTS OF LIMING WITH DOLOMITE ON SOIL PH AND PHOSPHORUS AND POTASSIUM AVAILABILITIES

Four stationary liming field experiments have been started in the period from 2003 to 2006 on the acid soils in Central Croatia. Dolomite meal contai ning 56% CaO and 40% MgO was applied in the amounts of 0, 5, 10 and 15 t ha -1 (the experiments I and II); 0, 6, 12, 18 and 24 t ha -1 (the experiment III) and 0, 10, 20, 30 and 40 t ha -1 (the experiment IV). All experiments were conducted in a randomized block design in four replicates. Liming with dolomite considerably affec ted soil pH and plant available phosphorus status, while differences of humus contents and plant available p otassium were non-significant. Initial soil pH valu es (pH in 1M KCl) were 4.20, 3.74, 4.60 and 5.16 for the e xperiments I, II, III and IV, respectively. The hig hest rate of dolomite increased soil pH to the level of 6.87, 6.36, 7.00 and 7.32, respectively. Initial plant a vailable phosphorus status in the soil of the experiment I w as very low (below 5.0 mg P 2O5 100 g -1 ), in the soil of the experiment III extremely high (above 50 mg P 2O5 100 g -1 ), while in the remaining two experiments these values were in moderate availabilities (between 15 and 20 mg P 2O5 100 g -1 ). As affected by liming plant available phosphorus were increased for 45%, 33%, 8% and 32%, for the experiments I, II, III, and IV, respectively.
12 Proteolytic Mechanisms of Cell Death in the Central Nervous System

2 Proteases . 251 2.1 Calpains . 251 2.1. 1 Calpain Family . 251 2.1. 2 Calpain Inhibitors . 253 2.2 Caspases . 254 2.2.1 Caspase Family . 254 2.2.2 Caspase Inhibitors . 255 2.3 Cathepsins . 257 2.3. 1 Cathepsin Family . 257 2.3. 2 Cathepsin Inhibitors . 259 2.4 Matrix Metalloproteinases . 260 2.4. 1 Matrix Metalloproteinase Family . 260 2.4. 2 Matrix Metalloproteinase Inhibitors . 261 2.5 Serine Proteases . 262 2.5. 1 Serine Family . 263 2.5. 2 Serine Protease Inhibitors (Serpins) . 265
Synthesis, Characterization and Antimicrobial Activity of Cu(II), Co(II) and Ni(II) Complexes with O, N, and S Donor Ligands

The complexes of the type ML2 [where M = Cu(II), Co(II), and Ni(II)] L = 1-phenyl-1-ene-3-(2-hydroxyphenyl)-prop-2-ene with 3- substituted-5-mercapto-4-amino-1,2,4-triazoles. Schiff base ligands have been prepared by reacting 3-(2-hydroxyphenyl)-1-phenylprop-2-en-1-one and 3-phenyl/pyridyl-4-amino-5-mercapto-1,2,4-triazoles in an alcoholic medium. The complexes are non-electrolytes in DMF. The resulting complexes were characterized by elemental analysis, magnetic measurements, conductivity measurements and spectral studies. The Schiff base acts as a tridentate dibasic and coordinating through the deprotonated oxygen, thioenolic sulphur and azomethine nitrogen atoms. It is found that Cu(II), Co(II), and Ni(II) complexes exhibited octahedral geometry. The antimicrobial activities of ligands and its complexes were screened by cup plate method.
Modeling the Water Absorption Characteristics of Various Local Pearl Millet Grains and Hungry Rice (Digitaria exilis) During Soaking Using Peleg’s Equation

Three local pearl millet grains and two hungry rice cultivars were evaluated for physical properties and chemical composition. Water absorption characteristics of these grains were also determined using Peleg’s equation to fit the experimental data within the linear segment of the curves. Results indicated wide variations in thousand–kernel weight (0.500–9.408 g) and volume (0.0–10.0 g), percent floaters (0.0– 11.433%, in addition to considerable variations in moisture (7.10–8.50%), protein (3.84–7.77%), ash (0.75–1.77%), fat (2.36–3.87%), crude fibre (1.68–2.39) and carbohydrate (76.63–82.98%). The water absorption characteristics of the pearl millet grains and hungry rice studied indicated an initial (0-2 h) higher rate of water absorption of 244.8-406.2, 334.8–540.4, 354.5–620.5, 517.3–872.2 and 566.7–926.7 gH20/100g dry solid for dauro, gero, gayamba, white acha and brown acha respectively followed by slower absorption of 363.8-463.1, 466.5–625.2, 535.5–655.2, 859.9–955.6 and 923.3– 1012.0 gH20/100g dry solid for dauro, gero, gayamba, white acha and brown acha respectively in the later stages. Peleg’s equation gave a reasonable fit to experimental data. The coefficient of determination R 2 varied from 0.9901 to 0.9997. Peleg constant K1 was obtained for the grains studied. The constant K2 decreased (5.4 x 10 -3 - 2.2 x 10 -3 ) with increase in temperature for most of the grains studied.
COMPUTATIONAL CLARIFICATIONS OF EXPERIMENTAL BLEND MORPHOLOGY TRANSITIONS IN IMMISCIBLE POLYMER MELTS ORGANIZED BY CHAOTIC ADVECTION

ABSTRACT Chaotic advection has been used recently to organize immiscible polymer melts into thousands of alternating thin layers and controllably obtain from layer breakup a wide variety of useful derivative blend morphologies. Experiments suggested that morphology changes in the multiple layers occur progressively, volumetrically, and interactively via gradual layer refinement and the formation and growth of holes (i.e., ruptures). To theoretically evaluate the experimental findings and also clarify morphology development in multilayer melts, interactive hole growth in multiple layers and associated morphology transitions have been investigated for experimentally observed random and ordered-hole arrangements using the lattice Boltzmann method (LBM). Results also provide a three-dimensional generalization to multiple layers of prior studies focused on hole growth in thin film coatings.
Neutron diffraction studies of the low-temperature magnetic structure of hexagonal FeGe

The magnetic structure of the hexagonal polymorph of FeGe has been investigated by means of neutron diffraction on single crystals at low temperature and for magnetic fields applied perpendicular to the c axis. Between 410 and approximately 55K the magnetic structure is collinear c-axis antiferromagnetic. Below approximately 55K the structure changes to c-axis double-cone antiferromagnetic with an inter-layer turn angle for the basal-plane moment component of 194.4 degrees , independent of temperature and applied field. The cone half-angle increases with decreasing temperature to approximately 14 degrees at 4.2K, but its temperature dependence shows a pronounced kink at 30K, indicating a phase change at this temperature. At 4.2K the authors observe an anomalous decrease of the basal-plane moment component at a critical field (B perpendicular to c) of 1.4 T. As the temperature is increased the critical field decreases and the anomaly becomes less pronounced. The cone structure is found to persist up at least 3.9 T, which was the upper limit of the applied field. The neutron diffraction data are discussed and related to previously published macroscopic data (e.g. magnetic susceptibility, torsion and Mossbauer data) as well as to earlier neutron diffraction results.
Kinetic Model for High-Temperature Oxidation of Lubricants

L'evaporation et l'oxydation du neopentyl polyolester trimethylopropane triheptanoate sont etudiees en laboratoire. Les constantes cinetiques de l'oxydation primaire et les reactions de polymerisation sont determinees. Les vitesses de reaction sont du premier ordre. Les resultats des essais d'evaporation et d'oxydation sont utilises pour tester l'aptitude du modele cinetique a prevoir correctement la degradation a haute temperature en milieu oxydant des lubrifiants
Enhanced Filter Performance by Fluidized-Bed Pretreatment with AlOH 3am : Observations and Model Simulation

Fluidized-bed pretreatment of a rapid sand filter with alum (Al2ðSO4Þ3 · 14H2O) has been shown to significantly improve performance during the initial portion of filter operation. Two alternative mechanisms are hypothesized by which alum pretreatment acts to improve particle removal: (1) AlðOHÞ3ðamÞ coats the sand filter medium, and alters its porosity. (2) Precipitated AlðOHÞ3ðamÞ embedded within the media pores acts as an additional filter medium that increases the particle capture efficiency. Conceptual models for these two mechanisms are developed and compared with experimental data for particle removal and head loss. Model predictions indicate that particle removal by filtration through AlðOHÞ3ðamÞ flocs is the mechanism that significantly enhances the filter performance. DOI: 10.1061/(ASCE) EE.1943-7870.0000493. © 2012 American Society of Civil Engineers. CE Database subject headings: Fluidized bed technology; Filters; Waste treatment; Simulation. Author keywords: Fluidized-bed pretreatment; Alum; Rapid sand filter; Ripening.
Broad-band dielectric spectroscopy on the molecular dynamics of bulk and adsorbed poly(dimethylsiloxane)

The molecular dynamics of poly(dimethylsiloxane) (PDMS) and its mixtures with hydrophilic and hydrophobic Aerosil (fumed silica) was investigated. After quenching from ambient temperature and subsequent reheating to about 150 K, pure PDMS exhibits the α-relaxation in the amorphous state. At higher temperatures the α c -relaxation process, which is assigned to the relaxation of the amorphous fraction in the semicrystalline polymer, is observed. Filled PDMS shows in contrast three distinct relaxation processes which originate from the varying degree of interaction with the filler surface
Chemical composition of some medicinal plant products of indigenous origin

Chemical compositions of leaves of neem ( Azadirachta indica ), sajna ( Moringa oleifera ), arjun ( Terminalia arjuna ), tulsi ( Ocimum sanctum ), turmeric ( Curcuma longa ); rhizomes of ginger ( Zingiber officinale ) and turmeric; fruits of amla ( Emblica officinalis ), haritaki ( Terminalia chebula ), bohera ( Terminalia belerica) and bulbs of garlic ( Allium sativum ) of indigenous origin were determined. Proximate and mineral components [Calcium (Ca), Phosphorus (P), Sodium (Na), Potassium (K), Magnesium (Mg), Copper (Cu), Zinc (Zn), Manganese (Mn)] were determined. Dry matter (DM) varied from 964g/kg in arjun leaves to 892g/kg in tulsi leaves. Sajna leaves were high in protein (240g/kg), whereas haritaki fruits were low (34g/kg). Highest amount of ether extract (EE) was found in turmeric rhizomes and the lowest in amla fruits. The crude fibre (CF) ranged from 134 g/kg in turmeric leaves to 7g/kg in garlic bulbs. Highest amounts of ash were found in tulsi leaves (136g/kg), whereas haritaki had 42g/kg. All the plant products had high Nitrogen Free Extract (NFE) and haritaki ranked the highest. Neem leaves contained the highest amount of Ca and Mg. Fruits had lower amounts of P than other products. K content ranged between 8510 ppm in turmeric leaves and 4190 ppm in arjun leaves. Tulsi leaves contain higher amounts of Na, whereas arjun leaves contained less. Tulsi leaves contain higher amount of Cu and Zn than other plant products. The Mn content ranged from 17 ppm in ginger to 780 ppm in garlic bulbs. Only sajna and neem leaves are considered as fair sources of protein. Such ingredients may be considered as good sources of Ca and Mg. DOI: 10.3329/bvet.v25i1. 4616 Bangl. vet . 2008. Vol. 25, No. 1, 32-39