Miracle-dz/UniFAR-FTUs huggingface dataset:
HD 50975: a yellow supergiant in a spectroscopic binary system

Context. Recent detection of a yellow supergiant star as a possible progenitor of a supernova has posed serious questions about our understanding of the evolution of massive stars. Aims. The spectroscopic binary star HD 50975 with an unseen hot secondary was studied in detail with the main goal of estimating fundamental parameters of both components and the binary system. Methods. A comprehensive analysis and modeling of collected long-term radial velocity measurements, photometric data, and spectra was performed to calculate orbital elements, atmospheric parameters, abundances, and luminosities. The spectrum in an ultraviolet region was studied to clarify the nature of an unseen companion star. Results. The orbital period was found to be 190:22 0:01 days. The primary star (hereafter HD 50975A) is a yellow supergiant with an e ective temperature Te = 5900 150 K and a surface gravity of log(g) = 1:4 0:3 (cgs). The atmosphere of HD 50975 A is slightly metal deficient relative to solar, [Fe=H] = 0:26 0:06 dex. Abundances of Si and Ca are close to the scaled solar composition. The r-process element europium is enhanced, [Eu=H] = +0:61 0:07. The bolometric magnitude of the primary was estimated to be Mbol = 5:5 0:3 mag and its mass to be 10:7 2:0 M . The secondary (hereafter HD 50975B) is a hot star of spectral type B2 near ZAMS with an e ective temperature of Te ’ 21 000 K and a mass M’ 8:6 M . The distance between HD 50975A and B is about 370R : The binary star is near a semi-detached configuration with a radius, RA’ 107R , and a radius of Roche lobe of about 120R for the primary star.
Facile synthesis of superhydrophobic TiO2/polystyrene core-shell microspheres

In this paper, core-shell TiO2/polystyrene (TiO2/PS) microspheres with superhydrophobic properties were pre- pared via a facile method. Our method needs neither special apparatus nor complicated chemical treatment. The whole process includes two steps: firstly, coupling agent was used to modify TiO2 by sol-gel method; secondly, fabrication of TiO2/PS dispersions was carried out via in-situ free-radical polymerization strategy. The component and structure of the TiO2/PS particles were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), field emission scanning electron microscope (FE-SEM) and transmission electron microscopy (TEM). The TiO2 gel particles with average diameter of 1 ∝m exhibited irregular spherical shape and obvious aggregation. Compared with the TiO2 particles, the resulting TiO2/PS particulates showed regular spherical shape, better dispersion and bigger size. By directly depositing the resulted TiO2/PS dispersion on a Cu foil, the coating showed superhydrophobic property which was reflected by the contact angle (CA) of water on the surface with high water adhesion. The apparent CA of water is 153.5±1.5°, suggesting that this composite possesses well superhydrophobicity.
Numerical Studies on the Electronic Gadgets in a Personal Computer Using CFD

The energy conservation of electronic components in computers is a very popular area of research for engineers because the temperature control inside the system unit of a desktop computer plays a vital role in its life and energy consumption. It is essential to study the various factors such as velocity of the inlet air, external temperature, heat generated in various components, heat transfer coefficient at various surfaces and orientation of components to overcome the design issues. In this paper, the three dimensional model of the system unit (SU) has been considered, and the temperature and velocity distribution inside the system unit, for the various operating conditions, have been analyzed using a CFD code ANYSYS-FLUENT 13. An experimental investigation has been carried out to validate the numerical approach.
Coplanar-Microstrip Transitions for Ultra-Wideband Communications

Nowadays optics is penetrating into the broadband access networks, so the data transmission bit-rate can be guaranteed regardless the distance between the subscriber and the central office. Many laboratories are working on the radio over fiber technology in the home networks. For home network applications, one must use low-cost and broadband modulators to transcribe the electrical signal into optical signal. The electrooptic polymers on which very active research is being carried out have the required properties for realizing this kind of modulators. Their realization needs a certain number of delicate manufacturing steps, therefore, a rigorous study of the component must be made before the realization of the modulators. The optimization of the modulator optical structure must be made first, from the properties of polymers at one’s disposal and the technological constraints, in order to obtain a single mode guide with minimum losses. Then, optimization of the driving electrode, inseparable step from the optical study, should be carried out. In electro-optic modulators based on polymer, the chromophore molecules responsible for the electro-optic effect are oriented perpendicularly to the substrate as they are generally poled by Corona effect or with contact electrodes. Consequently, a microstrip line is suitable to apply the driving signal to induce the electro-optic effect. Before packaging the final component, it is necessary to assess its performances directly on wafer by use of a probe station, usually equipped with probes compatible with coplanar lines GSG (Ground-Signal-Ground) insuring an easy electrical contact. So, a transition between coplanar and microstrip lines (CPW-MS) is indispensable to characterize the components on wafer. This transition must satisfy at least these three criteria: ultra-wideband, easy to realize and low-cost. One solution is to physically connect the coplanar ground planes to the bottom ground plane of the microstrip line through a via-hole, which would make the component more expensive without eliminating all parasitic resonance (Haydl, 2002). It is in this context that we conducted a comprehensive study of via-free transitions between coplanar and microstrip lines, in order to make easy and simple the characterization of components driven by microstrip line with CPW (Coplanar waveguide) probes. These transitions may be also employed in all microwave circuits driven by microstrip lines.
A Hybrid High-Order Method for Highly Oscillatory Elliptic Problems

Abstract We devise a Hybrid High-Order (HHO) method for highly oscillatory elliptic problems that is capable of handling general meshes. The method hinges on discrete unknowns that are polynomials attached to the faces and cells of a coarse mesh; those attached to the cells can be eliminated locally using static condensation. The main building ingredient is a reconstruction operator, local to each coarse cell, that maps onto a fine-scale space spanned by oscillatory basis functions. The present HHO method generalizes the ideas of some existing multiscale approaches, while providing the first complete analysis on general meshes. It also improves on those methods, taking advantage of the flexibility granted by the HHO framework. The method handles arbitrary orders of approximation k≥0{k\geq 0}. For face unknowns that are polynomials of degree k, we devise two versions of the method, depending on the polynomial degree (k-1){(k-1)} or k of the cell unknowns. We prove, in the case of periodic coefficients, an energy-error estimate of the form (ε12+Hk+1+(εH)12){(\varepsilon^{\frac{1}{2}}+H^{k+1}+(\frac{\varepsilon}{H})^{\frac{1}{2}})}, and we illustrate our theoretical findings on some test-cases.
Risks , Dangers , and Rewards in the Nova Scotia Offshore Fishery

Camu, Pierre. "Shipwrecks, Collisions and Accidents in St. Lawrence/Great Lakes Waterway, 1848-1900" 2,43-66 Conlin, Dan. "A Private War in the Caribbean: Nova Scotia Privateering, 1793-1805" 4, 29-46 Crimmin, Patricia K. "Prisoners of War and British Port Communities, 1793-1815" 4, 17-27 Drent, Jan. "Labour and the Unions in a Wartime Essential Industry: Shipyard Workers in BC, 1939-1945" 4, 47-64 Farrell, David. "Keeping The Local Economy Afloat: Canadian Pacific Navigation and Shipowning in Victoria, 1883-1901" 1, 35-44 Glover, William. "The Challenge of Navigation to Hydrography on the British Columbia Coast, 1850-1930" 4, 1-16 Jamieson, Alan G. "'Not More Ports, But Better Ports:' The Development of British Ports since 1945" 1, 29-34 Jarvis, Adrian. "Managing Change: The Organisation of Port Authorities at the Turn of the Twentieth Century" 2,31-42 Kaukiainen, Yrjô. "Seamen Ashore: Port Visits of Late Nineteenth-Century Finnish Sailors" 3, 39-46 Mackenzie, Kenneth S. '"They Lost the Smell:' The Canadian Steam Merchant Marine, 1853-1903" 2, 1-29 Marzagalli, Silvia. "Port Cities in the French Wars: The Responses of Merchants in Bordeaux, Hamburg and Livorno to Napoleon's Continental Blockade, 18061813" 4, 65-73 Mispelkamp, Peter K . H . "Avoidable Loss: The Saga of the Bliicher" 3, 25-38 Pope, Peter. "Adventures in the Sack Trade: London Merchants in the Canada and Newfoundland Trades, 1627-1648" 1, 1-19 Ruffman, Alan. "The Multidisciplinary Rediscovery and Tracking of 'The Great Newfoundland and Saint-Pierre et Miquelon Hurricane of September 1775"' 3, 11-23 Syrett, David. "The Battle for Convoy UC-1, 23-27 February 1943" 1, 21-27 Webb, Roland H. "Burrard Drydock Co. Ltd.: The Rise and Demise of Vancouver's Biggest Shipyard" 3, 1-10
Television Viewing and Symptoms of Inattention and Hyperactivity Across Time

The importance of well-specified research questions in the evaluation of early predictors of later inattention and hyperactivity is examined. In an analysis of a nationally representative sample of 2,717 children aged 4 to 10, latent growth trajectories for television viewing and inattention and hyperactivity are determined and the relationship of the two constructs examined. Analyses reveal a logistic latent growth model as the best description of the trajectory of television viewing across time, whereas a quadratic trend represents the best portrayal of the trajectory for symptoms of inattention and hyperactivity. Results do not support the presence of a meaningful relationship between television viewing and inattention and hyperactivity, which is inconsistent with previous findings from the same data set. The importance of the nature of well-specified research questions and the need to use contemporary longitudinal evaluation techniques to avoid misleading conclusions based on limited analyses and results are discussed.
Brainstem plasticity following long-term adaptation of the vestibulo-ocular reflex

The ability to orientate in space is crucial for survival. This behavior relies on the neural representation that emerges from the integration of various sensory inputs. Through the detection of gravity, the vestibular system plays a central role in self-motion perception. Since it detects the motion of the head in space, it unravels fundamental sensorimotor functions such as balance, posture or gaze stabilization. These functions are kept constant through life as a result of the adaptation to the surrounding visual and vestibular inputs. By performing a visuo-vestibular mismatch (VVM) protocol, we demonstrate that the long-term exposure to a conflict between these inputs causes a lasting adaptation of the vestibulo-ocular reflex (VOR). This adaptive motor memory, which initially is generated and stored in the cerebellum, is on the long term transferred to the vestibular nuclei. Hence, using a video-oculography technique in mice that underwent the VOR adaptation protocol, we were able to determine that the adaptation persists for several days, it is frequency-dependent and that a strong retinal slip drives motor learning. Additionally, to investigate the cellular and molecular mechanisms underlying this longterm adaptation we performed whole-cell patch clamp in brainstem slices in both control mice and mice adapted to the VVM. The central vestibular neuron's synaptic activity was recorded while the vestibular afferents were stimulated with a bipolar electrode. The gathered electrophysiological results suggest that, the efficacy of the synapse that connects the vestibular afferents to the vestibular nuclei is compromised following longterm adaptation. Using immunohistochemistry, we tested a possible basis of the observed modifications in the vestibular nuclei neurons’ synaptic properties. Additionally, using mice displaying fluorescent GABAergic neurons, we performed encouraging preliminary studies that, further on, will allow determining the role of the different subpopulation of neurons in the adaptive process. In conclusion, the present study shows that consolidation of long-term VOR adaptation relies on synaptic plasticity in the direct VOR pathway. Key-words: VOR, adaptation, motor learning, vestibular, brainstem. FCUP/ICBAS/CNPP Brainstem plasticity following long-term adaptation of the vestibulo-ocular reflex IV FCUP/ICBAS/CNPP Brainstem plasticity following long-term adaptation of the vestibulo-ocular reflex V
Study the Possible Action of Soft Laser on the Histological Structure of the Plasma Cell in the Lymph Node of Mice

Purpose: The aim of this presented work is to prove that soft laser may alter the histological structure of the plasma cell of the lymph node of laser groups of mice in order to create an immune response. Materials and Methods: Twenty four normal adult male of Swiss albino mice were used in this experimental work. They were aged two months and body weight 38-46gm. These mice were divided into three groups (n=8 each). The first group of mice was used as normal control group. Both second and third groups of mice were considered as laser groups and exposed to laser irradiation for 20 and 25 minutes once daily respectively during the entire periodof exposure to laser irradiation (nine days). Laser of gallium arsenide with a wavelength of 904nm was used in this work.After sacrificing all the mice including control group and laser groups, sections of lymph nodes were prepared by using a routine procedure. Histological evaluation of the overallsections of the lymph nodes was performed by light microscopy, and photographs were made at special magnification. Results:Obvious alterations were observed in the histological structure of the plasma cell of the lymph node of the laser groups such as increased size of the cell and multiplication of the nucleus. These alterations were more obvious in the plasma cell of the lymph node of the third laser group of mice in comparison with the alterations of the plasma cell of the lymph node of the second laser group of mice. Conclusion: Soft laser was a useful tool in altering the architecture of the plasma cell of the mice lymph node, and indicated that the time of exposure to laser irradiation was successful in making altered architecture of the plasma cell respectively.
On the onset of bora and the formation of rotors and jumps near a mountain gap

This study investigates the onset phase of a strong Adriatic bora windstorm that occurred on 4 April 2002. The target area is a gap about 20 km wide embedded in the coastal mountain barrier of the Dinaric Alps that favours strong jet‐like winds. Airborne‐aerosol back‐scatter lidar measurements on board the DLR Falcon research aircraft, together with surface and upper‐air observations, are used to verify high‐resolution numerical experiments conducted with the mesoscale atmospheric model RAMS and a single‐layer shallow‐water model (SWM). Especially during the breakthrough phase of the bora, the flow at the gap exit exhibits a complex spatial structure and temporal evolution. On a transect through the centre of the gap, a hydraulic jump forms; this is located close to the coast throughout the night, and starts to propagate downstream in the early morning. On a transect through the edge of the gap, a lee‐wave‐induced rotor becomes established, due to boundary‐layer separation. It starts to propagate downstream about two hours after the jump. This flow evolution implies that the onset of strong winds at the coast occurs several hours earlier downstream of the centre of the gap than downwind of the edge of the gap. Consequently, the wind field in the vicinity of Rijeka airport, located downwind of the gap, is strongly inhomogeneous and transient, and represents a potential hazard to aviation. Measured bora winds at the surface exceed 20 ms−1, and the simulated wind speed in the gap wind layer exceeds 30 ms−1. The simulated turbulent kinetic energy exceeds 10 m2 s−2.
Pessimism , Optimism and Psychological Distress in Breast Cancer Women

The aim of the present study was to investigate the effect of personality traits pessimism and optimism on depression, anxiety and stress in breast cancer surgical patients. The sample included 58 women in the age range of 40-60 years (M = 57.80, SD = 11.95) scheduled for breast cancer surgery. Interrupted Time Series Design was used. The sample was selected through the Convenience Sampling Technique. The sample was included if they had not other serious diseases such as hepatitis, diabetes, cardiovascular or were not taking any antidepressants. The Life Orientation Test-R (Scheier, & Carver, 1985) was used to measure traits pessimism and optimism, which was translated in Urdu by the author. The Depression, Anxiety and Stress Scale (Talat, 2011) was administered to measure depression, anxiety and stress in these participants at pre-surgery, week 2 nd and 6 th weeks post-surgery. Results reveal that breast cancer surgical patients having pessimism experience significantly higher levels of depression, anxiety and stress at pre and at 2 points in time (i-e,2 nd & 6 th week) postsurgery than optimistic women (P <.005). The data support hypotheses. The findings of study have practical implications in providing insight relevant for development and/or modifying trait optimism to overcome psychological distress in breast cancer surgical patients.
Structural stability, asymptotic stability and exponential stability for linear multidimensional systems: the good, the bad and the ugly

ABSTRACT In this paper, we investigate three concepts of stability for linear two-dimensional systems: the ‘good’ structural stability (an algebraic property linked to the location of the roots of a certain characteristic polynomial), the ‘bad’ asymptotic stability (roughly the trajectory converges to the equilibrium point) and the ‘ugly’ exponential stability (the rate of convergence is at least exponential). More precisely, we show that for a usual set of boundary conditions taken along the positive semi-axes, structural stability and exponential stability are equivalent notions. For this particular set of boundary conditions, we further prove that structural stability implies asymptotic stability but a counterexample shows that asymptotic stability does not imply structural stability which is a major difference compared to the one-dimensional case. This also highlights the importance of the boundary conditions when one works with multidimensional systems.
MANAGING COMPANY RISK BY INCORPORATING THE MINE RESOURCE MODEL INTO DESIGN AND OPTIMIZATION OF MINERAL PROCESSING PLANTS

The variability within an orebody with respect to both plant throughput and metallurgical response typically is a significant problem to address during the design phase of a mine. In addition, f or existing operating plants, the v ariability in throughput and metallurgical response needs to be clearly understood and accounted for if plant performance is to be optimized. MinnovEX Technologies, in a collaborative program with major mining companies, is continuing to develop methodologies and tools to address the issue of variability in ore characteristics (such as ore hardness and flotation response). The comminution component of the program is referred to as CEET, for “Comminution Economic Evaluation Tool” . The flotation component of the program is referred to as FLEET, for “Flotation Economic Evaluation Tool” . These tools were designed for the purpose of managing company and bank risk with respect to the design and production forecasting for comminution and flotation circuits. The tools are used for design and scale-up of these process unit operations and for prediction of throughput, quality of grind, recovery and final concentrate grades throughout the mine resource model. They are used to better quantify the value of each block of ore in the resource model. This paper describes the concepts and approach of the technology, including the importance of linking the mine resource model as an input to the design tools. It also outlines how this technology can be used to refine reserve and resource estimates and how it will be applied to other unit operations in the future.
Biomass production and allocation in Jatropha curcas L. seedlings under different levels of drought stress Authors

Authors: W.M. J. Achten, W.H. Maes, B. Reubens, E. Mathijs, V.P Singh, L. Verchot and B. Muys a Katholieke Universiteit Leuven, Division Forest, Nature and Landscape, Celestijnenlaan 200 E Box 2411, BE-3001 Leuven, Belgium b Katholieke Universiteit Leuven, Division Agricultural and Food Economics, Willem de Croylaan 42 Box 2424, BE3001 Leuven, Belgium c World Agroforestry Centre (ICRAF) Regional office for South Asia, CG Block, 1 Floor, National Agricultural Science Centre, Dev Prakash Shastri Marg, Pusa, New Delhi 110 012, India d Centre for International Forestry Research, P.O. Box 0113 BOCBD, Bogor 16000, Indonesia
Error analysis of the transport properties of Metropolized schemes

We consider in this work the numerical computation of transport coefficients for Brownian dynamics. We investigate the discretization error arising when simulating the dynamics with the Smart MC algorithm (also known as Metropolis-adjusted Langevin algorithm). We prove that the error is of order one in the time step, when using either the Green-Kubo or the Einstein formula to estimate the transport coefficients. We illustrate our results with numerical simulations.
Quantitative Analysis and First Report of Euglena tuba from Himachal Pradesh , India

Euglena tuba, a fresh water unicellular microalga has been reported first time from the Masran-Ka-Talab in Baroh area of village Dhalwara in district Kangra of Himachal Pradesh, India forming a reddish brown colour bloom in a pond due to the presence of astaxanthin pigment. Quantitative analysis of the sample shows that Euglena tubaexhibits high antioxidant and free radical scavenging activities with high reducing power capacity.
Exploiting the Internet to build language resources for less resourced languages

This paper aims to present a general view of the El uyar Foundation’s strategy to build several types of language resources for Basque out of the web in a cost-efficient way. We collect various types of corpora (specialized, general, com parable, parallel.) from the Internet by means of automatic tools, and then othe r kinds of resources (terminology, ontologies, etc. ) are built out of them also using other automatic tools that we have developed. We ha v also built a web-as-corpus tool to query the web directly as if it were a corpus. In the end of the paper, we describe two experiment s that we have performed to prove the validity of t he approach: one that automatically collects specialized corpora in Basque and extracts terminology out of them, and another one that automatically collects a comparable corpus and extracts bilingual terminol ogy out of it, using web-derived contexts to improv e the results. In our opinion, the strategy is very interesting and attractive for oth er less resourced languages too, provided they have enough presence on the web.