Miracle-dz/UniFAR-FTUs huggingface dataset:
PHYTOCOMPOUNDS OF THREE MEDICINAL PLANTS (JUNIPERUS COMMUNIS, URTICA DIOICA AND COLEUS FORSKOHLII) OF NORTH WEST HIMALAYAS INCREASES THE POTENCY OF ANTIBACTERIAL AND ANTIFUNGAL ANTIBIOTICS

The present study was designed to test the synergistic potential of three medicinal plants (Juniperus communis, Urtica dioica and Coleus forskohlii) with antibacterial (Tetracycline, erythromycin and chloramphanicol) and antifungal (fluconazole) antibiotics. Total phenolic and flavonoid content was highest in C. forskohlii (250±4.54 mg g GAE) and (270±2.2 mg g RE). Among three medicinal plants, methanolic extract of leaves of C. forskohlii showed the highest antioxidant potential (DPPH and ABTS method IC50 14.3±0.23 and 5.225±0.1 μg ml -1 respectively). Methanolic extract of J. communis, U. dioica and C. forskohlii showed the comparative antimicrobial activity against bacterial (E. coli ATCC25922, S. aureus ATCC 29213 and K. pneumoniae MTCC39) and fungal strains (C. albicans ATCC90028 and MTCC277) as measured by broth dilution method. Methanolic extracts of J. communis, U. dioica and C. forskohlii showed synergistic activity in combination with antibacterial and antifungal antibiotics against bacterial and fungal pathogens and caused reduction in MIC of antibiotics by 4-515 folds. Furthermore, HPTLC quantification showed higher amount of quercetin in the methanolic extracts of C. forskohlii (168.6367μg mg) followed by U. dioica (159.3197μg mg) and J. communis (142.306 μg mg). The present study highlighted the importance of selected medicinal plants in enhancing the activity of antibiotics against pathogenic bacteria and fungi.
Ternary ion exchange in zeolites. Part 3.—Activity coefficients in multicomponent electrolyte solutions

As part of a general study of the theory of ternary ion exchange in zeolites, a simple model is developed for the evaluation of the required activity-coefficient ratios in dilute solutions containing three salts. The application of this model is discussed with particular reference to ternary or multicomponent exchange in zeolites.
Simultaneous measurement of electroluminescence and space charge distribution in low density polyethylene under a uniform dc field

We report for the first time the simultaneous measurement of electroluminescence and space charge (SC) distribution in low density polyethylene films under a high dc field, using a specially developed pulsed electro-acoustic apparatus. An interpretation of the observed behaviour is proposed with the help of a numerical model of transport including the effect of charge trapping and recombination. It is shown that the two complementary approaches give consistent information about SC dynamics and charge recombination. This new kind of set-up should open the way for studying hot carrier transport in insulating materials.
Direct determination of nitrogen cycling rates and pathways in Arctic fjord sediments (Svalbard, Norway)

Results from a study of benthic nitrogen cycling in two Arctic fjords are presented. Intact sediment core incubations were used to quantify net fluxes of dissolved inorganic nitrogen, organic nitrogen, organic carbon, and oxygen across the sediment‐water interface. Rates of gross denitrification, anammox, nitrification, dissimilatory nitrate reduction to ammonium, and N2 fixation were quantified using core incubations and slurry experiments. Profiles of dissolved inorganic nitrogen in pore‐water, and organic carbon and nitrogen contents in the solid phase, were also obtained. Net nitrogen losses as N2, measured directly as changes in N2 : Ar, ranged from 152 µmol N m−2 d−1 to 453 µmol N m−2 d−1. Gross denitrification, as determined using 15N‐NO3− tracers, was 34–294 µmol N m−2 d−1. Rates of anammox ranged from 10 µmol N m−2 d−1 to 26 µmol N m−2 d−1 and contributed 5–23% of gross N2 generation. Nitrification rates were as high as 833 µmol N m−2 d−1 and sediments were a substantial source of nitrate to the water column (169–393 µmol N m−2 d−1 efflux). Uptake of ammonium (52–87 µmol N m−2 d−1), dissolved organic nitrogen (291‐486 µmol N m−2 d−1), and dissolved organic carbon (1313–2504 µmol N m−2 d−1) were observed. Nitrogen loss from the seafloor is shown to occur at rates comparable to temperate coastal environments and the sediments provide a substantial source of nitrate to the water column of Arctic fjords. In addition, anammox is confirmed as an important pathway in Arctic marine sediments, although N2 production is dominated by denitrification.
The paradox of pledgeabilityI

We develop a model in which collateral serves to protect creditors from the claims of other For valuable comments, we thank Andrea Attar, Bo Becker, Nittai Bergman, Bruno Biais, Philip Bond, Elena Carletti, Maria Chaderina, Francesca Cornelli, Jesse Davis, Paolo Fulghieri, Radha Gopalan, Todd Gormley, Piero Gottardi, Jens Josephson, Christian Laux, Mina Lee, Yaron Leitner, Andres Liberman, Nadya Malenko, Martin Oehmke, Cecilia Parlatore, Christine Parlour, George Pennacchi, Paul Pfleiderer, Uday Rajan, Adriano Rampini, Jason Sturgess, Valdimir Vladimirov, Jeffrey Zwiebel and seminar participants at the Banque de France, Barcelona Graduate School of Economics 2017 Summer Forum, University of Bergen, Bocconi University, Columbia Business School, University of Exeter, the 2016 Finance Research Association, the 2016 Finance Theory Group Meeting at Imperial College, HEC Paris, the 2016 Interdisciplinary Center Herzliya Summer Finance Conference, the Fall 2016 National Bureau of Economics Research Corporate Finance Meeting, the Laboratory for Aggregate Economics and Finance Over-the-Counter Markets and Securities Conference, Stanford Graduate School of Business, Swedish House of Finance, University of North Carolina, Vienna Graduate School of Finance, and Washington University in St. Louis. We thank the Investissements d’Avenir (ANR-11-IDEX-0003/Labex Ecodec/ANR-11-LABX-0047) and the French National Research Agency (F-STAR ANR-17-CE26-0007-01) for supporting our research. ∗Corresponding author. E-mail address: gromb@hec.edu (D. Gromb). creditors. We find that, paradoxically, borrowers rely most on collateral when pledgeability is high. This is when taking on new debt is easy, which dilutes existing creditors. Creditors thus require collateral for protection against possible dilution by collateralized debt. There is a collateral rat race. But collateralized borrowing has a cost: it encumbers assets, constraining future borrowing and investment. There is a collateral overhang. Our results suggest that policies aimed at increasing the supply of collateral can backfire, triggering an inefficient collateral rat race. Likewise, upholding the absolute priority of secured debt can exacerbate the rat race. JEL classification: G21, G32, G33, G38
Osmotic Virial Coefficients of Aqueous Poly(ethylene glycol) from Laser-Light Scattering and Isopiestic Measurements

Second and third osmotic virial coefficients (A 22 and A 222 ) of poly(ethylene glycol) (PEG) in aqueous solution were determined from a simultaneous evaluation of laser-light scattering data (diluted solutions) and isopiestic data (concentrated solutions). In contradiction to literature data, it is found that neither A 22 nor A 222 depends on the molecular mass of PEG. The reasons for the lacking accuracy of previously reported data are discussed. With virial coefficients independent of molecular mass, the osmotic virial equation describes well the available reliable experimental data, which cover PEG 200 to PEG 40000 at temperatures between 278 and 333 K, up to polymer concentrations of about 0.6 g cm -3 . An extrapolation indicates that at about 376 K, both A 22 and A 222 are zero
QUANTUM MECHANICS AND MOLECULAR MECHANICS STUDIES OF THE LOW-ENERGY CONFORMATIONS OF 9-CROWN-3

Quantum mechanics calculations and molecular mechanics calculations using the MMX force field have been performed on the low-energy conformations of 9-crown-3. A [144] conformation corresponds to the global minimum at the MP2/6-31G**//6-31G** level, with a [225] conformation only 0.72 kcal/mol higher in energy. The [333] conformation in which all three oxygen atoms are on the same side of the least squares plane passing through the ring, a structure particularly favorable as a tridentate ligand, is calculated to be 6.81 kcal/mol higher in energy. Electron correlation at the MP2 level and polarization functions on the hydrogen atoms have only minor effects on the relative conformational energies. However, polarization functions on the carbon and oxygen atoms are needed to obtain good results. MMX conformational energies are in good agreement with ab initio values if the electrostatic scale factor is set at 0.70. The role of transannular C−H···O hydrogen bonding in the low-energy conformations of 9-crown-3 .
NITRIFICATION POTENTIAL OF A TROPICAL PEAT SOIL UNDER OIL PALM (ELAEIS GUINEENSIS JACQ.) CULTIVATION AT DIFFERENT OPERATIONAL ZONES AND SOIL DEPTHS

The factors driving nitrification under oil palm (Elaeis guineensis.Jaq) cultivation in peat soil provide fundamental knowledge on managing available nitrogen (N) from losses. Characterization of operational zones and depths that are sensitive for N transformation is crucial for site specific N management. N fertilization in oil palm cultivation caused the inorganic N susceptible to losses through leaching and gasses emission. In order to understand nitrification in peat oil palm cultivation, specific area and depth that are susceptible to nitrification need to be characterized. Peat soil from three operational zones namely weeded circle (WC); frond heap (FH) and harvesting path (HP) was sampled up to six depths (0-10, 10-20, 20-30, 30-45, 45-60 and >60 cm) in an oil palm plantation in Perak, Malaysia. The samples was analyzed for potential nitrification rate (PNR), ammonium (NH4 +), nitrite (NO2 -) and nitrate (NO3 -) concentration. Results showed nitrification was found to be concentrated in the top soil WC zone as shown by the PNR (0.367 0.48 mg N kg-1 day-1). Deeper soil layer (>30cm for WC and >10 cm for both HP and FH) unable to show positive nitrification in PNR. Therefore, it can be assumed that most nitrifiers community are concentrated on the topsoil. It is also assumed that nitrate availability in the subsoil originated from vertical movements from the topsoil. Therefore it is believed nitrification in cultivated peat soil was concentrated in surface and fertilized soil due to favorable condition -lower moisture content and available substrate.
A prospective randomized study comparing the direct anterior approach in the lateral decubitus position versus the standard posterolateral approach for total hip arthroplasty

Background: This prospective randomized study was conducted to compare the early clinical, laboratory and radiological outcomes between patients who underwent the LDAA or the posterolateral approach (PLA) for THA. Methods: Seventy-two patients were randomly divided into two groups. The patients in one group accepted THA via the LDAA, and the patients in the other group accepted THA via the PLA. Results: Compared with the PLA, the LDAA offered the benefits of shorter incision (P < 0.001), less intraoperative blood loss (P < 0.001), less postoperative drainage (P < 0.001), and shorter length of stay (P < 0.001). In addition, the LDAA caused lower levels of creatine kinase, C-reactive protein, and myoglobin and higher levels of postoperative hemoglobin . The LDAA group received a lower score (P < 0.001) in the visual analogue scores and a higher score (P < 0.001) in the Harris hip scores. However, the LDAA required a longer operation time than the PLA (P < 0.001). Conclusions: Our results showed that LDAA is more minimally invasive and associated with a faster functional recovery.
Formation of chloropyromorphite from galena (PbS) in the presence of hydroxyapatite

Transformation of unstable lead [Pb(ll)] forms into insoluble pyromorphite, [Pb5(P04)3(OH, Cl, F.)], by addition of phosphate to Pb contaminated soil has been proposed as a remediation technology which reduces the mobility and bioavailability of Pb. Under aerobic condition, oxidation of dissolved sulfide increases dissolution of galena (PbS), causing it to become a source of liable Pb forms in soils, sediments and wastes. Thus, a galena ore was reacted with synthetic hydroxyapatite [Ca5(P04)30H] under various pH condition to determine the formation rate of pyromorphite and the volubility of galena under the ambient conditions. In a 6 day reaction period the dissolution rate of galena increased with pH due to the oxidation of dissolved sulfide. Correspondingly, formation of chloropyrornorphite became apparent in the galena- apatite suspensions with increasing pH. The insignificant effect of mineral P/Pb molar ratio on the formation of chloropyromorphite implied that dissolution of galena was the rate limiting step.
CAROTENOIDS ACHIEVING FROM TOMATOES DISCARDED USING IONIC LIQUIDS AS EXTRACTING FOR APPLICATION IN FOOD INDUSTRY

This work aims to evaluate the application of ionic liquid to extraction carotenoids from discarded tomatoes to use in food industry as a bioactive component or natural colorant. Tomato samples that would be discarded were donated, without any classifications or selections of fruits. Different ionic liquid derivate of 1-n-butyl-3-methylimidazolium were tested in the extraction. Carotenoids determinations qualitative and quantitative were done using HPLC-PAD-MS/MS. Comparative of acetone a conventional solvent and ionic liquid extraction allowed estimate the most applicative techniques to obtain the carotenoids, specially the lycopene. Results were promising confirm hexafluorophosphate 1-butyl- 3- methylimidazolium ionic liquid as the best able to extract 5.56 μg/g of lycopene, value significantly higher than when the employee conventional solvent acetone with 3.65 μg/g, concluding that ionic liquid application in extraction process is a viable alternative, which follow the Green Chemistry principals, minimizing contaminates and optimizing obtainment of nature pigments important, as the carotenoids. Index Terms - Ionic liquid application, lycopene.
Temperature Dependent Rate Constants for the Gas-Phase Reaction between OH and CH3OCl

The reaction between OH radicals and CH3OCl was investigated by the method of laser-photolysis/resonance fluorescence. Rate constants were obtained directly at several temperatures by monitoring the decay of OH radicals in a large excess of CH3OCl. The Arrhenius expression for the rate constant is given by k4(250−341 K) = (2.4 ± 0.8) × 10-12 exp(−(360 ± 100)/T) cm3 molecule-1 s-1. No pressure dependence was observed between 30 and 300 Torr of argon. On the basis of this kinetic data, the reaction with OH can be considered a relatively unimportant removal process for CH3OCl in the polar stratosphere.
Hydrogen Releasing of Lithium Amidoborane-LiNH2BH3

This paper reports on the preparation and hydrogen releasing of lithium amidoborane (LiNH2BH3, LiAB). LiAB is synthesized by a wetchemical route through the direct interaction of LiH with NH3BH3 in tetrahydrofuran (THF) at room temperature. The structure of the asprepared sample is investigated using X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy. The thermal decomposition process is determined by temperature programmed desorption/mass spectrometer (TPD/MS). The results show that the as-prepared LiAB starts to release H2 at the temperature of 70.9 C, which is much lower than that of pure AB, while detectable NH3 releasing should be controlled. [doi:10.2320/matertrans.MA201015]
SATISFACTION OF WORKING CONDITIONS AND PRODUCTIVITY IMPROVEMENT

Satisfaction of working conditions and productivity improvement of university employees covered a broad range of topics from working hours, policies, rules and regulation, organization cultures, remuneration, management, and physical conditions of the work place. The link between working conditions and satisfaction of employees is, in fact, vital to the success of business organization in the modern world. To understand that link between employees’ high satisfaction in working conditions would have positive relationship with their high productivity, willing to serve customers with high service quality, and the level of happiness in the workplace. The objectives of this study were to survey the university employees’ level of satisfaction from working conditions as well as to survey the relationship between university employees’ level of satisfaction from working conditions.A mixed of qualitative and a quantitative research study were conducted by interviewing with 100 university employees who were the regular employees and a total of 10 management level was selected for an in-depth interviewed in order to gain more insightful information. Statistical descriptive and analysis was performed by using SPSS program and LISREL. Frequency, percentage, mean, and standard deviation and t-test were used for data analysis and generated findings for this study. The result of this investigation revealed that the majority of university employees had rated that they had a very high level of satisfaction on working conditions with an overall mean of 3.53 and S.D of . 879. The list of high level of satisfaction included corporate culture, order & cleanliness of the office, above market remuneration, flexible workings, and quality of trainings.
Brood Morphology and Development of the Neotropical Eusocial Wasp Mischocyttarus cerberus ( Hymenoptera , Vespidae , Polistinae )

The paper wasp Mischocyttarus cerberus is widely distributed across Brazil (Richards, 1978; Oliveira et al., 2017). One or a few inseminated females (foundresses or queens) initiate new nests, which give rise to generations of other females (workers and future queens) and males, as the cycle of the colony progresses. New colonies are established throughout the year (Giannotti, 1998a). Similar to other independent-founding wasps, no clear morphological caste differences are observed (see Jeanne, 1980). However, the nestmates establish a reproductive-based division of labor depending upon dominance-subordination interactions. Normally, only one queen exists per colony (Poltronieri & Rodrigues, 1976; Giannotti, 1998a). It lays most of the eggs Abstract Mischocyttarus cerberus stands out as the most investigated species of eusocial paper wasp, in Brazil. While the adult characteristics were relatively well reported in the earlier studies, very meager information was available regarding their immature stages. This study provides a general description of the immature morphology of the brood of M. cerberus, by studying the number of instars and analyzing the degree of influence exerted by some of the environmental factors on the individuals in the immature phases. This work involves a detailed study of 72 wasp colonies from Rio Claro and Ribeirão Preto. Using the larvae drawn from 41 nests, the number of instars was calculated; besides, the degree to which a few environmental factors could affect the immature brood development was assessed in 31 nests. Eggs showed patterns similar in terms of form and size to that of the species described earlier. The two ventral lobes, characteristic of the Mischocyttarus larvae, were fully developed only in the fifth instar. Based on the head measurements, we found that M. cerberus also express five larval instars, which is in agreement with reports published earlier for the most part of social wasps. Besides, larvae took longer than eggs and pupae to develop. From the results of our study, we concluded that M. cerberus showed the typical developmental pattern in the immature stages of the genus. Sociobiology An international journal on social insects
Simultaneous measurement of bulk and surface recombination lifetimes on asymmetrical silicon samples

In this paper, a contractless, all-optical and non-destructive method for separating the minority carrier recombination lifetime and surface recombination velocities on assymetrical silicon samples (that is with different surface recombination velocities on the front and back surface) at low injection level is presented. The technique can be described as a pump-probe method where the excess carrier density is probed by analyzing free carrier absorption transient following excitation pulses having several wavelengths. A novel theoretical approach to evaluate the recombinative parameters is extensively analyzed and numerical simulations, which validate the proposed methodology, are presented.
EFFECT OF AL PARTICLE SIZE ON THE THERMAL DEGRADATION OF AL/TEFLON MIXTURES

Abstract Reactive mixtures of aluminum (Al) and polytetrafluoroethylene (PTFE or Teflon) have applications in propellants, explosives, and pyrotechnics. This study examines the thermal degradation behavior of Teflon and nanometer scale Al particles compared with micron-scale Al particles. Differential scanning calorimetry and thermo-gravimetric analyses were performed in an argon environment on both nanometer and micron scale particulate mixtures revealing lower ignition temperatures and larger exothermic activity for the nanometer Al/Teflon mixture. This increased ignition sensitivity and exothermicity is caused by a pre-ignition reaction unique to the nano-Al mixture. Experiments suggest that the pre-ignition reaction mechanism is controlled by the fluorination of the Al particle passivation shell. Micron-scale Al particles have a lower specific surface area and therefore the influence of the passivation shell promoting a pre-ignition reaction is reduced. Chemical kinetics are discussed along with particle morphology to explain the thermal degradation process of the mixtures. These results are helpful in the fundamental understanding of Al particle size effects on the reactivity of Al/Telfon composites.
Harvesting of Cyanobacterium Arthrospira platensis Using Inorganic Filtration Membranes

Abstract The present work deals with the concentration and the separation of Arthrospira platensis from a diluted culture medium. Among the different ways to operate this liquid/solid separation, this paper is focused on the membrane alternative. The general framework of this experimental study is the MELISSA project from the European Space Agency (ESA) for the development of life support systems in Space. The performances of fourteen inorganic membranes (microfiltration and ultrafiltration) were evaluated. According to the results, the operating conditions and the influence of phycocyanin and exopolysaccharides on the fouling phenomenon were investigated on the best membrane. A critical aspect to monitor along the process is the quality of the product in terms of composition of the main cell macro‐components, such as proteins and exopolysaccharides. The ultrafiltration membrane ATZ‐50 kD exhibited the best permeation flux and cleanability. An increase of fluid velocity and transmembrane pressure is energy‐consuming. A good compromise between this consideration and the gain in terms of permeation flux is close to 3 m · s−1 and 2 · 105 Pa with the selected membrane and with a cyanobacteria suspension concentration ranging from 50 mg · L−1 to 1 g · L−1.
Forces between Polystyrene Particles in Water Using the AFM: Pull-Off Force vs Particle Size

Adhesion between polystyrene particles in high purity water has been measured for a wide range of particle sizes. The results are compared with predictions based on the JKR model using literature values of the solid−vapor surface energy. When the surface roughness of the particles is accounted for, the JKR adhesion is still too large. An optimum value of the surface energy is calculated for one tip particle size and used for predicting the pull-off force for all of the substrate particle sizes, and it was found that this produces much closer agreement between theory and experiment although the scatter in the data is large. The mean pull-off force for all of the particle−particle measurements studied here is of the order of a few nanonewtons. Because of the large scatter in the pull-off force data, no clear trend in the pull-off force for different particle sizes has been observed. It is suggested that the effect of surface roughness on the pull-off force is significant.