Search results for "LET"
showing 10 items of 23489 documents
Laser Beam Induced Current measurements on Dye Sensitized Solar Cells and thin film CIG(S,SE)2 modules
2017
Calculating the efficiency of a solar cell depends on a precise knowledge of its area. Indeed, the photoresponse uniformity is essential to improve the manufacturing process. In this work we report on Laser Beam Induced Current measurements performed on CIG(S,Se)2 modules and Dye Sensitized Solar Cells. These measurements, performed via a green and a red HeNe lasers both operating at an optical irradiance of 1 Sun, allowed to obtain an accurate photoresponse map of the specimens and highlighted the non-uniformities with a spatial resolution of 400 μm and 80 μm, respectively.
CulnSe2/Zn(S,O,OH) junction on Mo foil by electrochemical and chemical route for photovoltaic applications
2014
Electrodeposition is a convenient technique for the development of low cost materials for photovoltaic (PV) device processing. Using a single step electrodeposition route, several groups have fabricated CIS (CuInSe) and CIGS (CuInGaSe) films [1]. One of the most important requirements for successful application of one-step electrodeposition film formation, is the ability to control composition of the deposited films and to develop polycrystalline microstructures with a low surface roughness and high sintered density. In this preliminary work, CIS films were produced by single bath electrodeposition finding the optimal conditions in order to achieve a dense film with high crystallinity and u…
Assessment of Physical and Chemical Stability of Different Magnesium Compounds in Tablets
2020
Modern lifestyle, excessive chemicalization of agricultural products, excessive processing and refining of food, cause a decrease in daily intake of magnesium, cation with an extremely important role in prevention and treatment of many diseases. As a result, there arises the need for extra magnesium intake in the form of dietary supplements. In this study were evaluated the physical and chemical stability of magnesium-containing tablets, depending on the active compound and the excipients used. Magnesium tablets in the form of orotate, lactate, citrate, oxide and hydroxide were taken into study and physical and chemical stability were observed over the validity period, at 6 and at 12 month…
Validation of chasmophytic syntaxa of colline and montane zones in Tajikistan (Middle Asia)
2016
AbstractEight syntaxa are validated with the previous names regarded as invalidly published according to the International Code of Phytosociological Nomenclature. The validation concerns syntaxa of rock plant communities of the Campanuletalia incanescentis order reported from the Pamir Alai mountains in Tajikistan. The majority of validated syntaxa represents association level, one is an alliance. All validations are conducted due to the invalidity of tables with typus releves according to art. 1 of the Code: they were not distributed as printed matter. The validated syntaxa are as follows: Caricion koshewnikowii, Scutellarietum hissaricae, Scutellarietum schugnanicae, Scutellarietum zaprja…
Una risata non ci seppellirà
2022
Il danno da prodotto difettoso ai tempi di Amazon e la proposta di direttiva sulla responsabilità del produttore
2023
A distanza di poco meno di quarant’anni dalla sua emanazione (con recepimento italiano, nella circostanza, insolitamente tempestivo) la direttiva sulla responsabilità da prodotto difettoso è sul punto di essere riscritta. La commissione europea ha presentato una nuova proposta di direttiva, con l’obiettivo dichiarato di sostituire una disciplina considerata non più in grado di fornire risposte adeguate alle esigenze di tutela dei consumatori. A veder bene, le modificazioni prospettate non stravolgono l’impostazione iniziale in chiave di «strict liability», anche se il modello statunitense da cui traeva ispirazione l’iniziativa comunitaria ha subito, nel frattempo, accentuate rivisitazioni c…
Cold Exposure Affects Lipid Metabolism, Fatty Acids Composition and Transcription in Pig Skeletal Muscle
2021
Cold exposure promotes glucose oxidation and modulates the lipid metabolism in adipose tissue, but it is still not fully clear whether cold exposure could affect meat quality and fatty acid metabolism in skeletal muscle of pig in vivo. Here, we kept finishing pigs under cold or room temperature overnight and determined the effects of cold exposure on meat quality, fatty acids composition and transcriptional changes in skeletal muscle of pigs. We found that cold exposure significantly reduced the meat colour24 h and pH24 h, without affecting carcass characteristics and other meat quality traits. Considerable changes were found in the proportions of individual fatty acids and the total conten…
Extensions of the standard model scalar sector and constraints from ccolliders and cosmology
2013
In this thesis we study the Higgs sector of the Standard Model and compare it to the latest data from the LHC and Tevatron experiments. Then we consider two extensions of the Higgs sector. First we extend the Standard Model Higgs sector with one real SU(2) singlet and then we consider two-Higgs- doublet model and extend also it with one real singlet. In both extensions the singlet scalar is considered as a potential dark matter candidate. We find that the parameter space of the so called two-Higgs-doublet-inert-singlet model includes regions which could provide a dark matter candidate which constitutes significant amount of the total dark matter mass density.
El impulso creativo de la música: análisis de la presencia musical en la pintura de Georges Braque y Pablo Picasso hasta 1914
2012
La estrecha relación entre las distintas disciplinas durante las primeras décadas del s. XX fueron síntoma de que nada pasaba sin la miscelánea de ideas. La investigación interdisciplinar y la ruptura de fronteras entre materias nos conducen a entender más profundamente cualquier realidad, y más aún un marco histórico que fomentó la creatividad con mayúsculas. Esta nueva mirada musical es vital para entender la obra de P. Picasso, nuestro personaje creativo español más conocido del s. XX, y la obra de G. Braque; la novedad reside en que hasta el momento no ha existido ni existe un acercamiento en profundidad de los creadores del cubismo desde una visión musical. Y en cambio, la presencia de…
Emma Zaragoza: mujer del artista, compañera de viaje, musa y coleccionista
2021
La mayoría de las obras realizadas por Joaquín Agrasot escapan a la narración de la consideración social del artista o de su éxito en los circuitos expositivos y comerciales. Gran parte de su obra se realizó en un contexto íntimo y familiar, en el que la obra se convertía en recurso de la memoria o el obsequio al ser querido. En este escenario debemos situar algunos de sus autorretratos realizados con el fin de ser destinados al recuerdo familiar o como parte de la celebración familiar, especialmente asociada a la llegada de un nuevo miembro a la familia de Agrasot. Pero será a su mujer Emma a quien retratará en diversas ocasiones.