Search results for "M1"
showing 10 items of 837 documents
Cementa ražošanas procesa tehnoloģisko risinājumu ietekmes uz gaisa kvalitāti novērtējums
2015
Maģistra darbā pētīts cementa ražošanas tehnoloģiju radītais gaisa piesārņojums un tā izplatība SIA „Cemex” rūpnīcas teritorijā, Brocēnos, kur cementa ražošanā pašlaik izmanto sausā procesa tehnoloģiju. Lai gan sausā procesa tehnoloģiskie risinājumi ir energoefektīvāki un videi draudzīgāki, ražošanas procesa rezultātā rodas būtisks cieto daļiņu piesārņojums. Pētījuma ietvaros veikts pilns cieto daļiņu novērtējuma cikls – emisiju aprēķini, piesārņojuma izkliedes modelēšana un modelēšanas rezultātu validācija izmantojot cieto daļiņu mērījumus. Mērījumi veikti ar vairakkanālu lāzerskaitīšanas metodi, modelēšana – izmantojot Gausa dispersijas modeli AerMod. Darba parādīta dažādu cementa ražošan…
La ricostruzione tridimensionale e il restauro virtuale di una tomba etrusca dipinta dell’Etruria meridionale interna: la “Grotta Dipinta” di Pranzov…
2015
[EN] The paper concerns the 3D reconstruction and virtual restoration of a painted rock-cut chamber tombs located in the interior of Southern Etruria (Viterbo Province, Central Italy). The tomb was discovered in 1901 in a place named Pranzovico and it dates from the mid-fifth century BC; it has a cross plan with central atrium (decorated with paintings) and three chambers in which there are the rock-cut funerary beds. The paintings have been largely destroyed by illegal excavators in the days immediately following the discovery; during the 20th century it was damaged due to agricultural works in the surroundings and now it is partially filled up. Its 3D reconstruction is based on the scarce…
El legado de Vicente Ripollés Pérez (1867-1943) en el Real Colegio Seminariod e Corpus Christi de Valencia: visión global y transferencia
2019
Vicente Ripollés Pérez (1867-1943) fue unos de los maestros de capilla españoles más interesantes entre los siglos XIX y XX; destacó como compositor, director, musicólogo y por su liderazgo en el movimiento cecilianista. Llegó a ser nombrado canónigo de la Catedral de Valencia y fue maestro de capilla en las catedrales de Tortosa, Sevilla y el Real Colegio de Corpus Christi en Valencia. A esta última institución legó su archivo y biblioteca que han sido catalogados recientemente y que contienen más de ochocientos do-cumentos. Ripollés merecería un estudio monográfico amplio que excede a las limitaciones de este texto. El objetivo de este trabajo es ofrecer una visión global y crítica sobre …
A Comprehensive Review on Lipid Oxidation in Meat and Meat Products.
2019
Meat and meat products are a fundamental part of the human diet. The protein and vitamin content, as well as essential fatty acids, gives them an appropriate composition to complete the nutritional requirements. However, meat constituents are susceptible to degradation processes. Among them, the most important, after microbial deterioration, are oxidative processes, which affect lipids, pigments, proteins and vitamins. During these reactions a sensory degradation of the product occurs, causing consumer rejection. In addition, there is a nutritional loss that leads to the formation of toxic substances, so the control of oxidative processes is of vital importance for the meat industry. Noneth…
Identification of Specific Somatic Stem Cell Markers in the Human Endometrium and Mechanisms of the Bone Marrow for Endometrial Regeneration
2018
INTRODUCTION The endometrium is a unique tissue with a high reconstitution potential during the menstrual cycle throughout the women’s reproductive life. This high regenerative potential seems to be due to the presence of somatic stem cells (SSCs) residing in the endometrial niche inside this tissue. Apart from this endogenous source, an exogenous source of stem cells composed by bone marrow-derived stem cells (BMDSCs) is postulated to exist. The endometrial contribution of bone marrow has been described in healthy and diseased women. Specifically, transplanted BMDSCs release soluble factors under tissue damage that contribute to tissue repair. To be able to differentiate both populations o…
Constraining the spin-dependent WIMP-nucleon cross sections with XENON1T
2019
We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from the XENON1T dark matter search experiment. The analysis uses the full ton year exposure of XENON1T to constrain the spin-dependent proton-only and neutron-only cases. No significant signal excess is observed, and a profile likelihood ratio analysis is used to set exclusion limits on the WIMP-nucleon interactions. This includes the most stringent constraint to date on the WIMP-neutron cross section, with a minimum of 6.3 × 10−42 cm2 at 30 GeV/c2 and 90% confidence level. The results are compared with those from collider searches and used to exclude new paramet…
Towards Stable Radial Basis Function Methods for Linear Advection Problems
2021
In this work, we investigate (energy) stability of global radial basis function (RBF) methods for linear advection problems. Classically, boundary conditions (BC) are enforced strongly in RBF methods. By now it is well-known that this can lead to stability problems, however. Here, we follow a different path and propose two novel RBF approaches which are based on a weak enforcement of BCs. By using the concept of flux reconstruction and simultaneous approximation terms (SATs), respectively, we are able to prove that both new RBF schemes are strongly (energy) stable. Numerical results in one and two spatial dimensions for both scalar equations and systems are presented, supporting our theoret…
Zvaigžņotā Debess: 2004, Rudens (185)
2004
Contents: L.Kondraševa and I.Zimina. New Riga Planetarium ; I.Rabinovičs. Remembering Fricis Blumbahs ; N.Cimahoviča. 50 cm Reflector Constructed in Riga ; J.Tambergs. Problems of Dialogue between Quantum Mechanics and Theology. A.Alksnis, Z.Alksne. The Sloan Great Wall ; A.Balklavs. Radio Galaxy – Emitter of Very High Energy Gamma-Rays ; A.Balklavs. Cosmic Objects in Photos – 2 ; A.Balklavs. New Assessments of Fine-Structure Constant Variability ; N.Cimahoviča. Dark Electric Matter Objects Around Us ; A.Balklavs. New Data on the Solar Granulation ; J.Jaunbergs. The Sinking Cliffs on Io ; D.Krieviņš. Space Launchers of Early XXI Century ; M.Sudārs. SpaceShipOne Closest to X-Prize ; J.Harja.…
THE HOMOLOGY OF DIGRAPHS AS A GENERALIZATION OF HOCHSCHILD HOMOLOGY
2010
J. Przytycki has established a connection between the Hochschild homology of an algebra $A$ and the chromatic graph homology of a polygon graph with coefficients in $A$. In general the chromatic graph homology is not defined in the case where the coefficient ring is a non-commutative algebra. In this paper we define a new homology theory for directed graphs which takes coefficients in an arbitrary $A-A$ bimodule, for $A$ possibly non-commutative, which on polygons agrees with Hochschild homology through a range of dimensions.
On cyclic branched coverings of prime knots
2007
We prove that a prime knot K is not determined by its p-fold cyclic branched cover for at most two odd primes p. Moreover, we show that for a given odd prime p, the p-fold cyclic branched cover of a prime knot K is the p-fold cyclic branched cover of at most one more knot K' non equivalent to K. To prove the main theorem, a result concerning the symmetries of knots is also obtained. This latter result can be interpreted as a characterisation of the trivial knot.