Search results for "BN"
showing 10 items of 1136 documents
Precision Measurement of the Mass and Lifetime of the Xi(-)(b) Baryon
2016
We report on measurements of the mass and lifetime of the Ξ[- over b] baryon using about 1800 Ξ[- over b] decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb[superscript -1] collected by the LHCb experiment. The decays are reconstructed in the Ξ[- over b] → Ξ[0 over c]π[superscript -], Ξ[0 over c] → pK[superscript -]K[superscript -]π[superscript +] channel and the mass and lifetime are measured using the Λ[0 over b] → Λ[+ over c]π[superscript -] mode as a reference. We measure M(Ξ[- over b] - M(Λ[0 over b]) = 178.36 ± 0.46 ± 0.16 MeV/c[superscript 2], (τ[subscript Ξ[- over b]/τ[subscript Λ[0 over b]) = 1.089 ± 0.026 ± 0.011, where…
Prasības celšana pēc dalībnieku mazākuma pieprasījuma pret SIA valdes locekli.
2022
Bakalaura darbā tiek pētīti un analizēti praksē esošie problēmjautājumi un aspekti saistībā ar dalībnieku mazākuma prasību tiesību realizāciju pret SIA valdi situācijā, kad sabiedrības valde un dalībnieku vairākums, izmantojot priviliģēto stāvokli uzņēmumā, realizē savas personiskās intereses un nodara sabiedrībai zaudējumus. Tiek pētīts Civillikuma un Komerclikuma regulējums, apskatīti tipiskie un sistemātiskie gadījumi tiesu praksē, kā SIA valde ierobežo vai pat aptur mazākuma dalībnieku tiesību realizēšanu. Dalībnieku mazākuma prasība par zaudējumu atlīdzināšanu ir īpatnēja ar to, ka prasības celšana ir ļoti atkarīga no informācijas, kas ir dalībnieku mazākuma rīcībā, dalībnieku mazākums…
Synthesis and Characterisation of Functionalized borosilicate nanoparticles for boron neutron capture therapy applications
2012
Boron Neutron Capture Therapy (BNCT) is a promising therapy for the cure of diffuse tumors. The successful clinical application of BNCT requires finding new boron-based compounds suitable for an efficient 10B delivery to the cancerous tissues. The purpose of this work is to synthesize borosilicate nanoparticles by a sol–gel recipe, and to functionalize them with folic acid in order to promote their capture by the tumor cells. Whereas sol–gel is a promising technique for the synthesis of nanoparticles, in case of borosilicate systems this approach is affected by significant boron loss during preparation. Here we show that functionalization of borosilicate nanoparticles with folic acid can re…
Alanine blends for ESR measurements of thermal neutron fluence in a mixed radiation field
2007
In this paper, the results of a study on the electron spin resonance (ESR) dosimetry to measure thermal neutron fluence in a mixed radiation field (neutron and photons) are presented. The ESR responses of alanine dosemeters with different additives are compared. In particular, the (10)B-acid boric and the Gd-oxide were chosen to enhance the sensitivity of alanine dosemeters to thermal neutrons. Irradiations were carried out inside the thermal column of the TAPIRO reactor of the ENEA center, Casaccia Rome. The main results are a greater neutron sensitivity and a smaller lowest detectable fluence for the dosemeters with gadolinium than for dosemeters of alanine with (10)B, which is well known…
Neutron flux and gamma dose measurement in the BNCT irradiation facility at the TRIGA reactor of the University of Pavia
2018
Abstract University of Pavia is equipped with a TRIGA Mark II research nuclear reactor, operating at a maximum steady state power of 250 kW. It has been used for many years to support Boron Neutron Capture Therapy (BNCT) research. An irradiation facility was constructed inside the thermal column of the reactor to produce a sufficient thermal neutron flux with low epithermal and fast neutron components, and low gamma dose. In this irradiation position, the liver of two patients affected by hepatic metastases from colon carcinoma were irradiated after borated drug administration. The facility is currently used for cell cultures and small animal irradiation. Measurements campaigns have been ca…
The iron-regulatory hormone hepcidin: A possible therapeutic target?
2015
The maintenance of stable extracellular and intracellular iron concentrations requires the coordinated regulation of iron transport into plasma. Iron is a fundamental cofactor for several enzymes involved in oxidation-reduction reactions. The redox ability of iron can lead to the production of oxygen free radicals, which can damage various cellular components. Therefore, the appropriate regulation of systemic iron homeostasis is decisive in vital processes. Hepcidin has emerged as the central regulatory molecule of systemic iron homeostasis. It is synthesized in hepatocytes and in other cells and released into the circulation. It inhibits the release of iron from enterocytes of the duodenum…
"Dżafar z Bagdadu" Janusza Makarczyka jako cenne źródło wiedzy o historii i literaturze arabskiej epoki Abbasydów
2018
This article deals with Janusz Makarczyk’s bestselling historical romance Jafar of Baghdad, first published in 1950. Makarczyk had a varied career as a journalist, travel writer of the ‘globtrotter school’, military officer, diplomat and academic; his deep involvement with the Middle East and Arab history began in the 1926 when he was sent to the Polish consulate in Jerusalem. The life of Jafar ibn Yahya provided him not only with enough material for a gripping story of love and romance but also a pretext for painting a broad canvas of historical events and personages. Addressed to younger readers, the book is didactic in the sense that it offers them basic information about Islam (e.g. the…
Do Investors Care About Noise Trader Risk?
2011
International audience; The link between investor sentiment and asset valuation is at the center of a long-running debate in behavioral finance. Using a new composite sentiment indicator, we show that the conventional risk does not explain the abnormal returns of portfolios most sensitive to the sentiment factor. Our result supports the existence of a sentiment risk valued by financial markets. We also find that the firms more impacted by the sentiment risk correspond to difficult-to-arbitrage and hard-to-value stocks, e.g. small stocks, growth stocks, young stocks, unprofitable stocks, lower dividend-paying stocks, intangible stocks and high volatility stocks.
Piespiedu darbs
2016
Piespiedu darbs kā kriminālsoda veids ir diezgan jauna alternatīva brīvības atņemšanai. Latvijā šāds soda veids ir pazīstams jau septiņpadsmit gadus un tiek piemērots arvien biežāk praksē, bet vēl joprojām sastopas ar tā problēmām piemērošanā praksē, izpildē un citiem problēmjautājumiem. Bakalaura darba ietvaros tiek izpētīta piespiedu darba vēsturiskā attīstība, jēdziens, būtība, piemērošana un izpilde Latvijā, kā arī ārvalstīs – Krievijas Federācijā, Francijas Republikā, Ukrainā, Igaunijas Republikā un Lietuvas Republikā. Bakalaura pētījuma ietvaros tiks sniegti autora secinājumi, ierosinājumi iespējamajiem grozījumiem normatīvajos aktos, saistībā ar piespiedu darba piemērošanu un izpildi…
ESTUDIO DEL EFECTO INFORMATIVO DEL ANUNCIO DE BENEFICIOS TRIMESTRALES
2005
In this research we investigate whether quarterly earnings announcements are informative using awide sample of firms listed in the Spanish Stock Market (SIBE). We study the period comprised between thethird quarterly of 2002 and the fourth quarterly of 2003. We analyse whether abnormal returns are related tothe quarter in which the announcement is released, whether the announcement implies good or bad news forthe firm, the source of the information, the size of the firm and whether the firm is followed by analysts.Results show that quarterly earnings announcements are informative. We also obtain evidence of a possibleuse of insider information in the case of the announcements disclosed in t…