Search results for "argon"

Chromatin-associated RNA interference components contribute to transcriptional regulation in Drosophila

2009

RNA interference (RNAi) pathways have evolved as important modulators of gene expression that operate in the cytoplasm by degrading RNA target molecules through the activity of short (21-30 nucleotide) RNAs1-6. RNAi components have been reported to have a role in the nucleus, as they are involved in epigenetic regulation and heterochromatin formation(7-10). However, although RNAi-mediated post-transcriptional gene silencing is well documented, the mechanisms of RNAi-mediated transcriptional gene silencing and, in particular, the role of RNAi components in chromatin dynamics, especially in animal multicellular organisms, are elusive. Here we show that the key RNAi components Dicer 2 (DCR2) a…

Homēra episkais stils Rodas Apollonija “Argonautikā”

2018

Maģistra darba tēma ir Homēra episkais stils Rodas Apollonija Argonautikā. Maģistra darba mērķis ir izpētīt šī teorētiskā uzstādījuma funkcionalitāti Rodas Apollonija poēmā Argonautika, pamatojoties uz antīkās literatūrkritiskās domas atziņām par atdarināšanu. Mērķa sasniegšanai teorētiskajā daļā ir apkopota informācija no zinātniskās literatūras par Homēra episko stilu un Rodas Apollonija poēmu Argonautika hellēnisma laika literatūras kontekstā, kā arī nepieciešamais materiāls no antīkājiem avotiem, lai izprastu atdarināšanas jēdzienu. Prakstiskajā daļā, kas sastāv no trīm nodaļām, balstoties maģistra darba teoretiskajā pamatā, ir veikts pētījums un ir noskaidrots gan kā Rodas Apollonijs a…

Treating cockroach phobia using a serious game on a mobile phone and augmented reality exposure: A single case study

2011

In vivo exposure has proved its efficacy in the treatment of specific phobias; however, not all patients benefit from it. Communication and information technologies such as Virtual Reality (VR) and Augmented Reality (AR) have improved exposure treatment adherence and acceptance. Serious games (SG) could also be used in order to facilitate exposure treatment. A line of research on SG is emerging which focuses on health issues. We have developed a SG for the treatment of cockroach phobia that uses a mobile phone as the application device. This work examines results of an N = 1 study about whether the use of this mobile game can facilitate treatment of this specific phobia preparing her for th…

Effetto di diversi trattamenti Modified Atmosphere Packaging (MAP) sulla qualità di frutti di gelso (Morus alba L. cv Kokuso 21)

2021

Il consumo italiano di piccoli frutti ha visto un notevole incremento nell’ultima decade grazie alla maggior attenzione rivolta dal consumatore al valore nutrizionale della frutta fresca. Il gelso è un frutto climaterico, caratterizzato da un elevato contenuto in carotene, vitamine B1, B2 e C, glucosio, saccarosio, acido tartarico e succinico, fenoli totali e antociani. Grazie al suo particolare valore nutraceutico il gelso è considerato oltre che un alimento funzionale anche un prodotto di alta gamma. Tuttavia, la commercializzazione di questo tipo di frutto è ancora in certa misura ostacolata dalla loro spiccata deperibilità ed è pertanto necessario sviluppare metodi in grado di estendern…

per una "naturaliste oubliée". Jeannette Villepreux Power tra storia, scienza e cultura nella Sicilia dell'800

2012

Further Experiments on the Effect of Bulk In-Cylinder Temperature in the Pressurized Motoring Setup Using Argon Mixtures

2020

Mechanical friction and heat transfer in internal combustion engines have long been studied through both experimental and numerical simulation. This publication presents a continuation study on a Pressurized Motoring setup, which was presented in SAE paper 2018-01-0121 and found to offer robust measurements at relatively low investment and running cost. Apart from the limitation that the peak in-cylinder pressure occurs around 1 DegCA BTDC, the pressurized motoring method is often criticized on the fact that the gas temperatures in motoring are much lower than that in fired engines, hence might reflect in a different FMEP measurement. In the work presented in SAE paper 2019-01-0930, Argon w…

Simulation Study on the Use of Argon Mixtures in the Pressurized Motored Engine for Friction Determination

2020

Mechanical friction and heat transfer in internal combustion engines are two highly researched topics, due to their importance on the mechanical and thermal efficiencies of the engine. Despite the research efforts that were done throughout the years on both these subjects, engine modeling is still somewhat limited by the use of sub-models which do not fully represent the phenomena happening in the engine. Developing new models require experimental data which is accurate, repeatable and which covers wide range of operation. In SAE 2018-01-0121, the conventional pressurized motored method was investigated and compared with other friction determination methods. The pressurized motored method p…

Argon plasma coagulation in the treatment of post-radiotherapy rectal bleeding

2012

Introduction: Chronic radiation proctitis is often associated to radiotherapy for treatment of pelvic cancer. The most common side effect of this pathological condition is rectal bleeding but despite the great number of clinical approaches and techniques that have been employed no consensus for the management of it is available. Although prospective randomized trials about hemorrhagic radiation proctitis are still lacking, endoscopic approach delivering an Argon Plasma Coagulation (APC) seems to be a successful and available option. Patients and Methods: Sixteen patients suffering from post-radiotherapy rectal bleeding were followed. In the nine cases presenting a rectum ulcerative colitis …

Radial properties of high-frequency electrodeless lamps in argon–mercury mixtures

2005

Radial emission properties of high-frequency electrodeless discharge lamps (HFEDLs) in argon–mercury mixtures are investigated both numerically and experimentally. The radial profile of the intensities of the mercury triplet lines 404.7, 435.8 and 546.1 nm are measured for two different values of the high frequency generator power. A model describing physical processes in an HFEDL, including the calculation of radial plasma parameters, is developed. Radial intensity dependences of the lines 404.7, 435.8 and 546.1 nm are calculated and are found to be in good agreement with the experimental measurements.

THE ARGONAUTICA ORPHICA VERSION FOR THE VOYAGE OF THE ARGONAUTS: A GEO-ANALYSIS

2017

This study traces and analyzes the itinerary followed by Argo and her crew, according to the unknown author of Argonautica Orphica: The voyage of the Argonauts from Iolcos to Colchis and their return following a different path, from Phasis River through central Europe to the Atlantic Ocean and then through the Mediterranean Sea. Conclusions are drawn about whether such a voyage could be possible in the remote antiquity and the “problematic” points of the description are pointed out.