Search results for "ray"
showing 10 items of 8009 documents
Cisza i milczenie w modlitwie i liturgii Kościoła
2022
Zagadnienie ciszy jest czymś niezwykłym. Chociaż może się wydawać, że to zjawisko nie ma żadnej wartości, to jednocześnie kryje w sobie ogromny potencjał dostępny dla każdego człowieka. Zewnętrzna cisza oraz milczenie przede wszystkim mogą służyć wewnętrznemu wyciszeniu. To umożliwia głębsze poznanie własnych przeżyć, emocji i myśli oraz nadanie im właściwej wartości. Niemożliwe jest pełne słuchanie, bez głębokiego skupienia. Te elementy są istotne również dla modlitwy chrześcijańskiej. Odpowiedni klimat ciszy może służyć skupieniu, bez którego nie można wyobrazić sobie właściwej modlitwy. Dodatkowo postawa milczenia otwiera człowieka na transcendencję. W ciszy szczególnie doświadcza się og…
ODS tērauda izejmateriālu lokālās struktūras analīze izmantojot Ti un Y K-malas rentgenabsorbcijas spektroskopiju
2017
Šajā darbā tika izmantota rentgenstaru absorbcijas spektru analīze oksīdu stiprinātam tēraudam (ODS), kas ir perspektīvs materiāls dažādās jomās, piemēram, saules elektrostacijās, reaktīvos dzinējos, ķīmiskos reaktoros un kodolreaktoros, jo materiālam piemīt tādas īpašības kā laba siltumvadītspēja un zema termiskās izplešanās apvienojumā ar augstu temperatūras izturību, korozijas un radiācijas pretestību. Darbā tiek iegūta informācija par ar dažādām metodēm izgatavotu ODS tēraudu lokālās atomārās struktūras izmaiņu ap itrija (Y) un titāna (Ti) atomiem, analizējot Y un Ti absorbcijas K-malu.
ODS tērauda izejmateriālu lokālās struktūras analīze, izmantojot rentgenabsorbcijas spektroskopiju
2015
Oksīdu stiprināts tērauds (ODS) ir perspektīvs kodolsintēzes reaktoru materiāls, kuram ir lieliska siltumvadītspēja un zema termiskās izplešanās, apvienojumā ar augstu temperatūras izturību, korozijas un radiācijas pretestību. Tamdēļ šo materiālu var izmantot arī daudzos citos pielietojumos, piemēram, saules elektrostacijās, reaktīvos dzinējos, ķīmiskos reaktoros, kā arī ūdeņraža ražošanā. Šajā darbā ar rentgenabsorbcijas spektroskopijas metodi tika analizētas ferīta un austentisko ODS tēraudu lokālās atomārās struktūras izmaiņas ap dzelzs (Fe) un hroma (Cr) atomiem dažādos tēraudu izgatavošanas posmos, analizējot Fe un Cr absorbcijas K-malas spektrus.
Genome-wide mapping of signatures of selection using a high-density array identified candidate genes for growth traits and local adaptation in chicke…
2023
Abstract Background Availability of single nucleotide polymorphism (SNP) genotyping arrays and progress in statistical analyses have allowed the identification of genomic regions and genes under selection in chicken. In this study, SNP data from the 600 K Affymetrix chicken array were used to detect signatures of selection in 23 local Italian chicken populations. The populations were categorized into four groups for comparative analysis based on live weight (heavy vs light) and geographical area (Northern vs Southern Italy). Putative signatures of selection were investigated by combining three extended haplotype homozygosity (EHH) statistical approaches to quantify excess of haplotype homoz…
Una lectura de les «Regles introductòries a la pràctica de l’Art demostrativa» de Ramon Llull
2022
Una part no menyspreable de les poesies de Ramon Llull va ser escrita per a afavorir la memorització dels fonaments conceptuals i operatius de l’Art. L’Art és una eina intel·lectual complexa i el seu creador era partidari de l’obscuritat didàctica. L’esforç que demana a l’usuari, d’altra banda, és indissociable de la pràctica de la primera intenció, que és conèixer i estimar Déu. És per això que les poesies creades per a aprendre l’Art i practicar-la poden semblar, a primera vista, un bon exemple de trobar clus. La lectura que es proposa en aquest article intenta fer més lleu l’accés a les Regles, pensades per facilitar la pràctica de l’Art demostrativa, el manual d’ús central de l’Art lul·…
Design and simulation of QCA-based 3-bit binary to gray and vice versa code converter in reversible and non-reversible mode
2022
The current Very Large-Scale Integration (VLSI) technology has reached its peak due to the fundamental physical limits of Complementary Metal-Oxide-Semiconductor (CMOS). Quantum-dot Cellular Automata (QCA) is considered a proper alternative to CMOS technology in digital circuit design. QCA has features like low power, small area, and high speed in nanoscale digital circuit design. A code converter is a circuit that converts a determined code to another one. Code converters such as Binary to Gray, Gray to Binary, and Binary to BCD converters have a crucial role in fast signal processing in digital systems. Also, code converters are used as a base unit for data transmission into the Arithmeti…
Evaluation of the efficacy of a new insecticide paint against malaria vectors
2015
La malaria continúa siendo un problema de salud pública global. Se calcula que en el mundo hay 3.300 millones de personas en 97 países y territorios que corren el riesgo de padecer el paludismo, y que para 1.200 millones ese riesgo es elevado (WHO, 2014). El control de la malaria a gran escala está altamente basado en al control del vector, principalmente mediante el uso de mosquiteras tratadas con insecticidas de larga duración (LLINs), y en menor medida, el Rociamiento Residual Intradomiciliario. Todos los tratamientos recomendados de LLINs y la mayoría del Rociamiento Residual Intradomiciliario se basan en el uso de piretroides. La creciente resistencia de los vectores de malaria a los p…
In-beam γ-ray spectroscopy of low- and medium-spin levels in 211Po
2017
The structure of the low- and medium-spin levels of the 211Po nucleus have been studied with in-beam γ-ray spectroscopy with the 208Pb(α,n)211Po fusion-evaporation reaction. The level scheme was further extended with levels of the configurations π(h9/2)22+−4+⊗νg9/2, π(h9/2)28+⊗νg9/2, π(h9/2)22+−4+⊗νi11/2, π(h9/2)22+−4+⊗νj15/2, π(h9/2f7/2)8+⊗νg9/2, and π(h9/2)20+⊗ν(g9/2)20+(s1/2)−1. The single-particle neutron states νd5/2 and νs1/2 were also identified. Furthermore, a number of states feeding the low-spin structures were added. peerReviewed
Technical note : Simulation of lung counting applications using Geant4
2023
A Geant4 simulation package has been developed to investigate and test detector configurations for lung counting applications. The objective of this study was to measure radiation emitted from the human body and to make a qualitative comparison of the results of the simulation with an experiment. Experimental data were measured from a plastic phantom with a set of lungs containing 241Am activity. For comparison, simulations in which 241Am activity was uniformly distributed inside the lungs of the ICRP adult reference computational phantom were made. The attenuation of photons by the chest wall was simulated and from this photopeak ef-ficiency and photon transmission were calculated as a fun…
When the Grafting of Double Decker Phthalocyanines on Si(100)-2 × 1 Partly Affects the Molecular Electronic Structure
2016
International audience; A combined X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and density functional theory (DFT) study has been performed to characterize the adsorbate interaction of lutetium biphthalocyanine (LuPc2) molecules on the Si(100)-2 × 1 surface. Large molecule–substrate adsorption energies are computed and are found to compete with the molecule–molecule interactions of the double decker molecules. A particularly good matching between STM images and computed ones confirms the deformation of the molecule upon the absorption process. The comparison between DFT calculations and XP spectra reveals that the electronic distribution in the two plateaus …