Miracle-dz/UniFAR-FTUs huggingface dataset:
Kinetics of H2S Reaction with Calcined Calcium-Based Sorbents

Sulfidation experiments at atmospheric pressure in a thermogravimetric analyzer were performed with two calcined limestones and a fully calcined dolomite at temperatures between 450 and 700 °C and with sorbent particle sizes between 0.4 and 1.6 mm. The effects of reaction temperature, sorbent particle size, and H2S concentration were analyzed. The sulfidation rate of the dolomite and a limestone increased with temperature in all of the ranges tested. However, the sulfidation rate of the other limestone increased with temperature until 600 °C and was nearly constant from this temperature. The temperature effect on the conversion versus time curves diminished with increasing particle size. At low temperatures (<500−550 °C) the sulfidation rate did not depend on sorbent particle size. On the other hand, at temperatures above 500−550 °C the sulfidation rate increased with decreasing sorbent particle size due to the effect of the intraparticle diffusion. This finding was in agreement with the SEM-EDX sulfur di.
Data analysis and anode materials for lithium ion batteries

In order to improve the capacity of lithium ion batteries higher capacity anode materials are required to replace the existing carbonaceous materials. The higher capacity materials must however also have a good cycle life. Many materials have been investigated to try and find a material offering such a desirable combination of properties. A number of materials are investigated as possible anode materials for lithium ion batteries including intermetallics with compositions based on FeAl 3 , Al 47 Fe 15 Si 38 , Al 20 Fe 5 Si 2 , Al 9 FeSi 3 , FeSi and FeSi 2 along with other materials such as Bi 2 Sr 2 CaCu 2 O 8 , Bi 2 Sr 2 Ca 0.3 Y 0.7 Cu 2 O 8 , and nanometre SiC. The intermetallic materials for the investigation were prepared through the arc melting of the constituent elements together followed by ball milling. The Bi 2 Sr 2 CaCu 2 O 8 and Bi 2 Sr 2 Ca 0.3 Y 0.7 Cu 2 O 8 materials were also ball milled but were initially prepared through the spray drying of nitrate solutions with subsequent sintering operations. The SiC materials were obtained through commercial suppliers. the materials high initial discharge capacity the capacity was not maintained over the following cycles. All the materials did however demonstrate the dramatic influence that the microstructure can have on the electrochemical properties of the material. Given the variability of the electrochemical performance with the alteration of the microstructure, improvement of the cycle life through exploration of microstructural variation may be possible. that
The Cathodic Stripping Voltammetric Determination of 6-Mercaptopurine at a Silver Electrode

Voltammetric studies have been carried out on 6-mercaptopurine (6MP) deposited at a silver electrode. 6MP yields a cathodic stripping signal at about –1.0 V (vs. Ag/AgCl) in pH 7.2 sodium phosphate buffer. Under selected conditions a linear calibration plot was obtained over the range of 0.2–6 μM with a relative standard derivation of 2.9 % for 1 μM 6MP (n = 11, td = 60 s). The voltammetric response of 6MP was dependent on experimental conditions such as solution pH and potential-scan range. Generally 6MP exhibits two adjacent peaks in acidic solutions (pH 9). Cetyltrimethylammonium bromide causes an enhancement of the cathodic stripping peak.
Tunable dual-mode DFB laser for millimetre-wave signal generation

Highly compact dual-mode semiconductor laser sources get more and more attention in different application fields such as radar, security and personal communication systems. When the two generated wavelengths are detected within the same photodetector, an electrical signal which frequency is the difference between the frequencies of the two optical modes will be issued. We report on an integrated semiconductor device which is composed of two in-line DFB sections that are using the same optical waveguide structure. The so generated dual-mode spectrum can be adjusted first, by the difference in the grating parameters of each DFB section and second, by their respective driving current. We will report on the characterisation of such a device focusing on tunability and linewidth aspects that are of prime importance in above mentioned applications.
Morphological and Electronic Characterization of Functionalized Graphene Nanoribbons Obtained by the Unzipping of Single-Wall Carbon Nanotubes: A Scanning Tunneling Microscopy Study

A few layers of functionalized graphene (FLG) have been obtained by the oxidative unzipping reaction of single-walled carbon nanotubes. A detailed Scanning Tunneling Microscopy and Transmission Electron Microscopy study shows that several different morphologies are observed, depending on the substrate upon which they are deposited, thus providing useful hints for a “real world” application of these carbon nanostructures. In addition, a combined Scanning Tunneling Spectroscopy investigation has shown that the electronic properties of these FLG are affected by their functionalization degree, opening interesting perspectives for their use in sensor and biosensor devices.
Vapor-liquid equilibrium determination with a flow-type ebulliometer for six binary systems made of alcohol and amine

Les points d'ebullition pour six systemes binaires, composes de methanol, d'ethanol, du propanol-2, de l'ethylenediamine et du propylamine, sont mesures a pression atmospherique. Les relations des equilibres liquide vapeur sont determinees en utilisant l'equation de Wilson
CFD SIMULATION OF ECAE THROUGH A MULTIPLE-ANGLE DIE WITH A MOVABLE INLET WALL

The present work is focused on a 2D fluid dynamics description of equal channel multiple angular extrusion (ECMAE) or equal channel multiple angular pressing (ECMAP), using a numerical mathematical simulation for viscous flows of physical polymeric materials models through a die with a movable inlet wall. A numerical finite-difference model for plane viscous Newtonian flow of an incompressible continuous medium in a multiple-angle region with a movable inlet die wall, based on the formulation and numerical solution of the boundary value problem for the Navier-Stokes equations in curl transfer form, is derived. A numerical estimation of the influence of the direction of movement of a movable entrance die wall on computational flow lines, stream and curl functions, and viscous flow velocity fields was carried out within the scope of the developed model for a movable inlet wall of the die. The proposed hydrodynamic approach extends the ideas concerning the dynamics of the macroscopic rotation formation within the volume of the viscous physical model of a polymeric material during ECMAE or ECMAP through a die with a movable inlet wall.
Spoilage and Pathogenic Bacteria Associated with Spoilage Process of Sichuan Pickle during the Spontaneous Fermentation

The spoilage and pathogenic bacteria in the sporadic microbial spoilage of Sichuan Pickle were investigated by 16S rRNA libraries. The pathogenic Vibrio penaeicida (39.19%), the spoilage and pathogenic Pseudomonas fluorescens (6.76%) were detected in initial spoilage stage. While, in middle spoilage stage they shifted to the pathogenic V. penaeicida (51.25%), the spoilage and pathogenic Pse. fluorescens (3.75%), the spoilage Pse. Chlororaphis (7.5%) and then to the pathogenic V. penaeicida (30.59%), Halomonas variabilis (10.59%) and Arcobacter marinus (5.88%), the spoilage Lactobacillus alimentariu (5.88%) in latter spoilage stage. The undesired Pseudoalteromonas nigrifaciens, Psychrobacter alimentarius, Marinomonas, Cobetia marina, Celerinatantimonas and V. litoralis were also detected in the spoilage process. When compared at species level, the community similarity coefficients of three samples were from 0.6122 to 0.5165 and ascended to 0.2359. These results are very useful to design the effective strategies to control or eliminate the microbial spoilage of Sichuan Pickle.
Incorporation and Release of Hydrophobic Probes in Biocompatible Polycaprolactone-block-poly(ethylene oxide) Micelles: Implications for Drug Delivery

Block copolymer micelles have shown high potential as hydrophobic drug carriers. The loading efficiency, partition coefficient, and release profile all play critical roles in micellar drug delivery. As part of a series of studies on these polycaprolactone-block-poly(ethylene oxide) (PCL-b-PEO) micelles in drug delivery, we investigated the solubilization and release of the hydrophobic probes, benzo[a]pyrene and Cell-Tracker CM-DiI (DiI) from these micelles using fluorescence spectroscopy. The same method was also used to determine the partition coefficients of each probe between the core and the exterior solution, which were calculated at different solvent compositions and extrapolated to 100% water. The maximum loading efficiencies of DiI and benzo[a]pyrene were 87% and 32%, respectively. The large difference in the loading efficiency is related to the values of the partition coefficients, which were calculated to be 5800 for DiI and 700 for benzo[a]pyrene. DiI is more highly miscible with the polycaprol.
Aptamer-conjugated magnetic nanoparticles for the efficient removal of HCV particles from human plasma samples

Described herein is a methodology for selectively capturing hepatitis C virus (HCV) particles from human plasma samples using aptamer-conjugated magnetic nanoparticles. The aptamers were specific for binding to the E1E2 glycoprotein of HCV. The nanoconjugate was confirmed using UV-visible and FTIR spectroscopy; moreover, the transmission electron micrographs demonstrated efficient capture of these nanoconjugates using magnetic force. Also, quantitative measurement of HCV particles in human plasma samples by real-time PCR confirmed the efficient removal of the viral load.
The Effect of Pressure on Order/Disorder in Kaolinite Under Wet and Dry Conditions

Well ordered kaolinite was isostatically and uniaxially pressurized up to 13,200 kg/cm2 for 10 min in dry conditions and the effects of pressure on kaolinite order were determined by analyzing the shapes of two-dimensional diffraction bands on X-ray powder diffraction patterns. Increased pressure decreased the percentage of low-defect kaolinite phase, and isostatic pressure proved to be more effective than uniaxial pressure in increasing disorder, e.g. the degree of disorder resulting from 2000 kg/cm2 isostatic pressure was equivalent to that caused by a 3200 kg/cm2 uniaxial pressure. Also, the effect of high pressure was similar to that obtained with lower pressures applied several times (e.g. the effect of applying 8500 kg/cm2 pressure for 10 min was comparable to using 3200 kg/cm2 pressure five times). In addition, six kaolinites of different structural order were isostatically pressurized up to 4000 kg/cm2 for 10 min, both in dry and wet (water) conditions. Under dry conditions, changes in structurally ordered kaolinite were comparable to those cited above whereas kaolinite pressurized in wet conditions showed a moderate improvement in structural order.These results may contribute to our understanding of kaolinite behavior during burial diagenesis and low-grade metamorphism. In addition, these results can also be used in industry to improve kaolin technological properties that depend on kaolinite structural order by application of appropriate industrial pressure processes.
Transport Processes In Bubbles, Drops And Particles

1. Constitutive Moedling of Bubbly Liquids K.R. Rajagopal and L. Tao 2. Analytical Expressions E.E. Michaelides 3. Electrokinetic- and Thermocapillary-Flow-Driven Aggregation of Particles and Bubbles on Surfaces P.J. Slides, J.L. Anderson, H. Kasumi, S.A. Guelcher, and Y.E. Solomentsev 4. Recent Developments in the Bubble Velocity Jump Discontinuity D. Rodrigue and D. DeKee 5. Cavitation and Bubble Dynamics P.R. Williams 6. Foam Darinage, Coasrening and Evaporation S.A. Magrabi and B.Z. Dlugogorski 7. Interphase Mass and Heat Transfer in Gas-Fluidized Beds J.R. Grace 8. Progress in an Industrial Application of Fluidized Beds: Advances in the Sand Coremaking Process S.I. Bakhtiyarov, R.A. Overfelt and D.A. Siginer 9. Sedimentation and Fluidization of Solid Particles in LiquidsR. Di Felice 10. Determination of the Constitutive Relationship for Filer Cakes in Cake Filtration Using the Analogy between Filtration and Diffusion B.V. Ramarao, C. Tien and C.N. Styadev 11.Tracer Dispersion in Fluid Motion through a Porous Medium J.P. du Plessis 12. Flows of Concentrated Granular Mixtures P. Coussot 13. Wall Effects on Spheres Falling Axially in Cylindrical Tubes R.P. Chhabra 14. Steady and Transient Motion of Spherical Liquids G.H. McKinlye 15. Particle Deposition in Membrane Systems V. Chen and D.E. Wiley 16. Rheological Properties of Concentrated Suspensions P.J. Carreau and F. Cotton
Operating Conditions of Hollow Fiber Supported Liquid Membrane for Phenol Extraction from Coal Gasification Wastewater

The extraction and recycling of phenol from high concentration coal gasification wastewater has been studied using polypropylene (PP) hollow fiber membrane and polyvinylidene fluoride (PVDF) hollow fiber membrane as liquid membrane support, the mixture of tributyl phosphate (TBP) and kerosene as liquid membrane phase, and sodium hydroxide as stripping agent in the process of extraction. The experiments investigated the effect of the operating conditions of the hollow fiber supported liquid membrane, such as aqueous phase temperature and the connection forms of membrane modules, on the extraction efficiency of phenol from high concentration coal gasification wastewater. The conclusions obtained from lab scale experiments provided guidance for scale-up experiments. So, in the scale-up experiments, three membrane modules connected in parallel, then three membrane modules connected in series were used to increase the treatment capacity and improve the treatment effect, under the operating conditions of wastewater temperature 20 ˚C, PH 7.5~8.1, flow rate 100 L/h and the concentration of stripping phase 0.1 mol/L, stripping phase flow rate 50 L/h, the extraction efficiency of the PP-TBP supported liquid membrane system was 87.02% and the phenol concentration of effluent was 218.14mg/L. And the phenol concentration of effluent met the requirements of further biodegradation treatment.
X-ray diffuse scattering holography

It is shown that anomalous X-ray diffuse scattering can be treated as a hologram providing information on the local environment of the anomalous scatterer. In contrast with standard holography with atomic resolution, holographic oscillations of several percent of the total measured signal can be achieved by choosing suitable photon energies. The problem of virtual images can be solved very easily in the case of both centrosymmetric and non-centrosymmetric structures. Moreover, these holograms are not overlapped by dense and strong Kossel line patterns.
A five‐coordinate ruthenium(II)–porphyrin–carbene complex: [bis(3‐trifluoromethylphenyl)methylene‐κC](5,10,15,20‐tetra‐p‐tolylporphyrinato‐κ4N)ruthenium(II)

The stable title trifluoromethyl-substituted carbenyl metalloporphyrin, [Ru(C(15)H(8)F(6))(C(48)H(36)N(4))], has a five-coordinate Ru atom which is displaced from the porphyrin N(4) plane towards the axial carbene ligand by 0.230 (3) A. The Ru--C(carbene) bond coincides with a crystallographic twofold axis and its length of 1.841 (6) A is notably shorter than the value of 1.868 (3) A in the pyridine adduct.
Dehydration of carrots. Effects of pre-drying treatments on moisture transport and product quality

Summary The effect of blanching, sulphiting, starching, freezing and sucrose and sodium chloride dipping before air drying on moisture transport during carrot cube dehydration was studied. The results, interpreted in terms of existing theories combined with physical considerations, provide evidence that factors such as blanching, freezing and sucrose dipping affect moisture transport and product quality.
ISOLATION AND PURIFICATION OF PHENOLIC COMPOUNDS FROM MAGNOLIAE OFFICINALIS BY PREPARATIVE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY

A rapid, facile, and economical method to isolate and purify phenolic compounds (honokiol, magnolol, and 4-O-methylhonokiol) from the Chinese traditional herb Magnoliae officinalis was described. The isolation of honokiol, magnolol, and 4-O-methylhonokiol were performed by preparative high performance liquid chromatography (HPLC) on a C18 (300 × 50 mm, 10 µm) column using mobile phase methanol and 1% (v/v) acetic acid in water (85/15, v/v), at a flow rate of 85 mL/min and with a detection wavelength of 294 nm. The purified compounds were characterized by 1H and 13C NMR. The technique described in this article is a fast, economical, and highly efficient tool in the large scale isolation of phenolic compounds.
Killer whales : the natural history and genealogy of Orinus orca in British Columbia and Washington

Watching killer whales in the wild in British Columbia and Washington state has become a popular recreational activity in the last decade. Nothing quite matches the thrill of witnessing a pod of these immense creatures cutting through the waters of Johnstone Strait or listening to their strident underwater calls to each other in their own dialect. The new edition of this book presents updated results of over 25 years of killer whale research in British Columbia and Washington. Intended for both whale enthusiasts and researchers, it contains the latest information on what is known of killer whale natural history and presents a catalogue of close to 300 photographs of "resident" killer whales as well as a genealogical registry that enables readers to identify individual killer whales and their family groups. New in this edition is the latest information on the status and future prospects of west-coast killer whales - how they may be affected by declining salmon stocks, high levels of toxic chemicals in their tissues, and increasing vessel traffic and underwater noise. Whale watchers will particularly appreciate revised suggestions and guidelines on how to view whales in the wild without disturbing them. The authors are active researchers who are widely regarded as the world's foremost authorities on killer whales.
STUDIES ON ANTIFUNGAL ACTIVITY OF A BACTERIAL STRAIN ON SOME FOOD SPOILAGE FUNGUS

Due to the development of increased resistance power of large number of fungal and bacterial pathogens to common antimicrobial agents, there is an urgent need to survey for new novel antimicrobial agents. In the present study the bacterial strain capable of producing antimicrobial agent was isolated from soil collected from the organic waste dump site. The isolated bacterial strain was further screened for their antifungal activity. The identified antifungal bacteria were Azomonas sp. DS. The metabolites of the isolated bacteria were screened for antifungal activity against ten different fungal species. Screening was done by using paper disc containing 20µl of culture supernatant placed on nutrient agar plate seeded with test organisms. The activity was determined by measuring the inhibition zone diameter (in cm) both for crude and dilution with 0.1 (M) phosphate buffer (pH-7.0) in the ratio of 1:1 (Crude extract:Buffer) . The Azomonas sp. DS showed inhibition zone diameter of 6.3 cm against Beauveria sp. with the application of crude metabolite and dilution of crude metabolite with 0.1 (M) phosphate buffer (pH-7.0) in the ratio of 1:1 (Crude metabolite: Buffer) showed inhibition zone diameter of 4.0 cm. From this work it might be concluded that Azomonas sp. DS can be used for the production of novel antifungal agent. Further study will be needed for characterization of the metabolites.
Development and Validation of an HPLC Method, with Fluorescence Detection, for Simultaneous Determination of Paroxetine and its Metabolites in Plasma

Abstract An isocratic reversed‐phase high performance liquid chromatography (HPLC) method for simultaneous determination of paroxetine, a potent selective serotonin reuptake inhibitor and its metabolites {(‐)‐trans‐4‐(4‐fluorophenyl)‐3‐(4‐hydroxy‐3‐methoxyphenoxymethyl) piperidine, BRL 36610 A} (metabolite A) and {(‐)‐trans 4‐(4‐fluorophenyl)‐3‐(3‐hydroxy‐4‐methoxyphenoxymethyl) piperidine, BRL 36583 A} (metabolite B) in plasma has been developed. The method utilizes a Zorbax Eclipse XDB‐C18 5‐µm column, a mobile phase composed of acetonitrile‐phosphate buffer (KH2PO4 0.04 M; pH=3.5) (30:70, v/v) at a flow rate of 1.0 mL/min and protriptyline as internal standard. The total analysis time was 12 min and paroxetine eluted at 10 min. A fluorescence detector was used with excitation and emission wavelength adjusted at 295 and 350 nm, respectively. All the experiments were performed at room temperature. The isolation of paroxetine and its metabolites from plasma samples has been achieved from pH=12 with liquid‐liquid extraction using ether. The organic layer was removed, evaporated at 40°C under a nitrogen steam, and the residue was dissolved in 200 µL mobile phase and injected into the HPLC system. The method was linear over the concentration range of 7–200 ng/mL for paroxetine, 12–200 ng/mL for metabolite A, and 27–200 ng/mL for metabolite B. The quantification limits were 7, 12, and 27 ng/mL, respectively, proving the suitability of the method for paroxetine drug level monitoring in the therapeutic range. The extraction recovery was about 84% for paroxetine. Within day precision of the method (RSD%) for paroxetine, metabolite A, and metabolite B were 0.26–7.5, 3.4–13, and 5.7–15%, respectively, while between day precision of the method was 4.9, 5.5, and 6.0%, correspondingly. No endogenous compounds were found to interfere with the analysis. Twenty six substances were studied for interference and none of them interfered in the determination. The method was applied successfully in the quantitative determination of paroxetine in plasma samples of patients receiving 20–40 mg of SeroxatR (paroxetine) and the concentrations were in the therapeutic range. Metabolites A and B were not detected in the plasma samples of the patients.
Correlations between the glass transition, crystallization, apparent activation energy and glass forming ability in Fe based amorphous alloys

The glass transition, crystallization, apparent activation energy and glass forming ability (GFA) of a metallic glass as well as their correlations were studied in amorphous alloys of composition Fe91−xBxZr5Nb4 (FBZN, at.%) and Fe61−xCoxZr5B30Nb4 (FCZBN, at.%). It was found that the glass transition temperature Tg and the crystallization temperature Tx can be related by a formula, Tx = αTg+β, for each amorphous alloy in the two systems. α and β are constants for a given amorphous alloy, obtained by making measurements using non-isothermal scanning at various heating rates in a differential scanning calorimeter and then applying Lasocka's equation. The apparent activation energy of the glass transition Eg was observed to be directly proportional to α and have a correlation, Eg = 3.527(Tx−β)/Tg+1.09, with Tx and Tg. The supercooled liquid region ΔTx, which is used for characterization of the GFA, is related to Eg and Tg by the formula ΔTx = (Eg/3.527− 1.309)Tg+β.