A dose-response curve for biodosimetry from a 6 MV electron linear accelerator

Biological dosimetry (biodosimetry) is based on the investigation of radiation-induced biological effects (biomarkers), mainly dicentric chromosomes, in order to correlate them with radiation dose. To interpret the dicentric score in terms of absorbed dose, a calibration curve is needed. Each curve should be constructed with respect to basic physical parameters, such as the type of ionizing radiation characterized by low or high linear energy transfer (LET) and dose rate. This study was designed to obtain dose calibration curves by scoring of dicentric chromosomes in peripheral blood lymphocytes irradiated in vitro with a 6 MV electron linear accelerator (Mevatron M, Siemens, USA). Two software programs, CABAS (Chromosomal Aberration Calculation Software) and Dose Estimate, were used to generate the curve. The two software programs are discussed; the results obtained were compared with each other and with other published low LET radiation curves. Both software programs resulted in identical linear and quadratic terms for the curve presented here, which was in good agreement with published curves for similar radiation quality and dose rates.

Transferência de calor transiente na agitação linear intermitente de latas

Foi estudada a transferência de calor transiente na agitação linear e intermitente (ALI) de embalagens metálicas contendo simulantes de alimentos, objetivando-se sua aplicação em processos de pasteurização ou esterilização e conseqüentes tratamentos térmicos mais eficientes, homogêneos e com produto de melhor qualidade. Foram utilizados quatro meios fluidos simulantes de alimentos de diferentes viscosidades e massas específicas: três óleos e água. Foram combinados efeitos de cinco tratamentos, sendo: meio simulante (4 níveis), espaço livre (3 níveis), freqüência de agitação (4 níveis), amplitude de agitação (2 níveis) e posição das latas (4 níveis). Os ensaios de aquecimento e resfriamento foram feitos em tanque com água à temperatura de 98 °C e 17-20 °C, respectivamente. Com os dados de penetração de calor em cada experimento, foram calculados os parâmetros de penetração de calor fh, jh, fc e jc. Os resultados foram modelados utilizando-se grupos de números adimensionais e expressos em termos de Nusselt, Prandtl, Reynolds e funções trigonométricas (com medidas de amplitude e freqüência de agitação, espaço livre e dimensões da embalagem). Foram estabelecidas as duas Equações gerais para as fases de aquecimento e resfriamento: Nu = ReA –0,199.Pr –0,288.sen(xa/AM)0,406.cos(xf/FA)–1,039.cos((xf/FA).(EL/H).p)–4,556 Aquecimento Nu = 0,1295.ReA–0,047.Pr –0,193.sen(xa/AM)0,114.cos(xf/FA)–0,641.cos((xf/FA).(EL/H).p)–2,476 Resfriamento O processo de ALI pode ser aplicado em pasteurizadores ou autoclaves estáticas horizontais e verticais, com modificações simples. Concluiu-se que a ALI aumenta significativamente a taxa de transferência de calor, tanto no aquecimento como no resfriamento.

Fiscal reform and federal relations: Brazilian deadlocks

Brazilian fiscal reform got to deadlocks because proposals tried to avoid considering federal relations. There are two main types of federal relations: the competitive and the cooperative. In both types is possible to observe coordination mechanisms. Brazilian federalism is a mixture of both types what leads to difficulties finding solutions. We argue that is more important to find mechanisms to facilitate cooperation than to discuss the qualities of any alternative fiscal structure. Fiscal reforms brings along a great deal of uncertainty. So it is important to discuss the reform timing and the compensation mechanisms before hand.

A year after Crimea: continuity and change of Finnish-Russian relations reflected in the views of the government officials of Finland and Russia

This thesis discusses the dynamism of bilateral relations between Finland and Russia and their interconnection with wider EU-Russia relations in the sight of the recent conflict in Ukraine. In particular, incorporation of Crimea in the territory of Russia in March 2014 is believed to have triggered a series of disputes between the European Union and Russia and thus, have impacted the course of the bilateral Finnish-Russian relations. The study leans on a premise that there are some historical traditions and regularities in the Finnish foreign policy course towards Russia which make the bilateral Finnish-Russian relations special. These traditions are distinguished and described in the book “Russia Forever? Towards Pragmatism in Finnish/Russian relations” (2008) edited by H. Rytövuori-Apunen. Assuming that the featured traditions take place in modern relations between Finland and Russia, the aim of the thesis is to find out how these traditions reappear during the year shaped by the events in Ukraine. In order to do that, author follows the timeline of happenings around the Ukraine crisis starting with Crimea’s referendum on independence, and exams the way these events were commented on and evaluated by the key government officials and political institutions of Finland and Russia. The main focus is given to the Finnish official discourse on Russia during the study period. The data collection, consisting of mostly primary sources (ministerial press releases and comments, statements, speeches and blog posts of individual policy makers) is processed using the thematic analysis supported by the content analysis. The study reveals that the consequences of the Ukraine crisis have brought, among others, complications to the economic cooperation between Finland and Russia, and have stimulated the increased attention of the Finnish decision makers to the country’s security questions. As a result, the character and importance of some historical regularities of the Finnish foreign policies on Russia, like the Continental Dilemma, have taken new shape.

Solving large sparse linear systems over the field GF(2)

Nowadays problem of solving sparse linear systems over the field GF(2) remain as a challenge. The popular approach is to improve existing methods such as the block Lanczos method (the Montgomery method) and the Wiedemann-Coppersmith method. Both these methods are considered in the thesis in details: there are their modifications and computational estimation for each process. It demonstrates the most complicated parts of these methods and gives the idea how to improve computations in software point of view. The research provides the implementation of accelerated binary matrix operations computer library which helps to make the progress steps in the Montgomery and in the Wiedemann-Coppersmith methods faster.

Stretching the drum skin : an analysis of power relations in leadership and succession in the Evangelical Lutheran church in Tanzania-Northern diocese 1942– 1993

-

Americ Vespuce : 1451-1512 : sa biographie, sa vie, ses voyages, ses découvertes, l'attribution de son nom à l'Amérique, ses relations authentiques et contestées / par Henry Vignaud,...

Collection : Recueil de voyages et de documents pour servir à l'histoire de la géographie depuis le XIIIe siècle jusqu'à la fin du XVIe siècle ; 23

The Literary relations between La Fontaine and the "Astrée" of Honoré d'Urfé : a dissertation presented to the faculty of the department of philosophy of the university of Pennsylvania in partial fulfilment of the requirements for the degree of doctor of philosophy / by Walther P. Fischer

Collection : Publications of the University of Pennsylvania ; n° 6

Recueil de pièces concernant l'Allemagne, et en particulier le Palatinat, et les relations diplomatiques de la France avec l'Allemagne et la Suède, principalement sous le règne de Louis XIII. (1339-1645).

Contient : « Estat particulier de chacun des princes et Estats du sercle de la Basse-Saxe, par M. [Théodore ?] GODEFROY », 1643 ; Pièces concernant les relations de la France et de l'Allemagne, 1551-1552 ; « Discours du Palatinat et de la dignité électorale appartenant au prince Charles-Louis, électeur Palatin du Rhin, contre les prétentions... du duc de Bavière », et autres pièces et mémoires concernant l'affaire de la succession Palatine ; Copies et extraits de diverses pièces, bulles d'or, chartes de rois de Bohême, etc., concernant l'Allemagne et principalement le Palatinat, 1339-1619 ; « Propositions des ambassadeurs du roy de la Grand-Bretagne, de monsieur l'électeur Palatin et duc de Wirtemberg, faictes à Leurs Majestez Très-chrestiennes, touchant l'estat d'Allemagne », et réponse, 1613 ; « Intérests de la Couronne de France au restablissement de la maison électorale Palatine en ses estatz, pays et dignitez » ; Recueil de pièces, traités, lettres, etc., concernant les relations diplomatiques entre la France et l'Allemagne, 1631-1640 (f. 126), — et entre la France et la Suède, 1631-1644 (f. 275) ; « Description de la ville de Munster en Wesphalie..., par le sieur L'ESCALOPIER », aumônier du duc de Longueville, 1645

Procès-verbaux ou relations de négociations diplomatiques. (1555 et 1633).

Contient : « Procez-verbal de la conférence tenue à Marc, près Ardres, entre les députez du roy Henry II et de l'empereur Charles V..., pour terminer les différens d'entre lesdicts princes, pour raison de plusieurs terres et seigneuries, et particulièrement pour les duchez de Milan, Bourgongne et Savoye, rédigé par escrit par monsieur Jean DE MORVILLIER, évesque d'Orléans, l'un desdicts députez, depuis le 5e may 1555 jusques au 7 juin audict an. » [Cf. Lelong, Bibliothèque historique de la France, t. III, n° 30032.] ; « Relation du voyage que [Manassès de Pas, marquis] de Feuquières, a faict en Allemagne, et l'estat auquel les affaires généralles s'y trouvoient lorsqu'il en est party, pour revenir trouver Sa Majesté à Nancy », 1633 ; dans cette relation sont insérées un certain nombre de lettres du marquis de Feuquières et autres pièces diplomatiques

Pièces concernant les relations diplomatiques entre la France et l'Espagne ; contrats de mariages royaux ; questions de frontières. — Copies. (1510-1624).

Contient : Contrat de mariage d'Élisabeth de France avec Philippe II, roi d'Espagne, 1559 ; Contrat de mariage de Charles IX avec Élisabeth d'Autriche, et pièces annexes, 1569-1570 ; Ligue défensive entre les Maisons de France et d'Espagne ; Contrat de mariage de Louis XIII avec Anne d'Autriche, et pièces annexes, 1612-1615 ; Contrat de mariage d'Élisabeth de France avec Philippe IV, roi d'Espagne, et pièces annexes, 1612-1615 (f. 86). « Actes et mémoires sur le différend qui est entre les roys de France et d'Espagne pour la rivière d'Endaye », 1510-1581 (f. 111) ; Mémoires concernant le port de Socoa, 1609-1618 ; Requêtes des habitants d'Hendaye contre ceux de Fontarabie ; « Traictez et autres actes pour les confins de Navarre », 1614, etc ; Rapport au roi d'Espagne sur l'état de la frontière de Navarre, des lieux par où les Français pourraient entrer en Navarre, etc ; « Relation touchant les costes de Languedoc, celles de Roussillon et de Catalongne, et des advantages qu'a la France sur l'Espagne de ce costé là » ; En tète du volume, tables des pièces, la seconde de la main de Pierre Dupuy