Search results for "ASTER"

Geochemical characteristics of Cretaceous carbonatites from Angola

1999

Abstract The Early Cretaceous (138–130 Ma) carbonatites and associated alkaline rocks of Angola belong to the Parana-Angola-Etendeka Province and occur as ring complexes and other central-type intrusions along northeast trending tectonic lineaments, parallel to the trend of coeval Namibian alkaline complexes. Most of the Angolan carbonatite-alkaline bodies are located along the apical part of the Mocamedes Arch, a structure representing the African counterpart of the Ponta Grossa Arch in southern Brazil, where several alkaline-carbonatite complexes were also emplaced in the Early Cretaceous. Geochemical and isotopic (C, 0, Sr and Nd) characteristics determined for five carbonatitic occurren…

A Survey of University Students’ Knowledge of Vocabulary Learning Strategies and Influential Factors in Middle East

2016

In this study, the most and the least common vocabulary learning strategies was explored among Eastern Mediterranean University international students. Besides, the role of personal factors such as gender and English proficiency level of students were considered. After distributing the questionnaire, the data were analyzed applying t-test and ANOVA. It was revealed that the level of importance of vocabulary learning strategy use was moderate for the EMU international students. Furthermore, it was found that metacognitive strategies and social strategies are the most and the least common vocabulary learning strategies respectively utilized by EMU international students for learning vocabular…

In vitro induction of cecropin genes — an immune response in a Drosophila blood cell line

1992

The Drosophila melanogaster cell line mbn-2 was explored as a model system to study insect immune responses in vitro. This cell line is of blood cell origin, derived from larval hemocytes of the mutant lethal (2) malignant blood neoplasm (1(2)mbn). The mbn-2 cells respond to microbial substances by the activation of cecropin genes, coding for bactericidal peptides. The response is stronger than that previously described for SL2 cells, and four other tested Drosophila cell lines were totally unresponsive. Bacterial lipopolysaccharide, algal laminarin (a beta-1,3-glucan), and bacterial flagellin were strong inducers, bacterial peptidoglycan fragments gave a weaker response, whereas a formyl-m…

Budlein A from Viguiera robusta inhibits leukocyte-endothelial cell interactions, adhesion molecule expression and inflammatory mediators release

2009

Budlein A has been reported to exert some analgesic and anti-inflammatory properties. In this study, we have evaluated its effect on LPS-induced leukocyte recruitment in vivo and the mechanisms involved in its anti-inflammatory activity. In vivo, intravital videomicroscopy was used to determine the effects of budlein A on LPS-induced leukocyte-endothelial cell interactions in the murine cremasteric microcirculation. In vitro, the effects of budlein A on LPS-induced cytokine, chemokine and nitrites release, T-cell proliferative response as well as cell adhesion molecule expression (CAM) were evaluated. In vivo, intraperitoneal administration of budlein A (2.6 mM/kg) caused a significant redu…

Ptilostemon greuteri Raimondo et Domina in: Schede per una Lista Rossa della Flora vascolare e crittogamica Italiana

2012

Eastern Orthodox Churches and Oriental Orthodox Churches in Dialogue: Reception, Disagreement and Convergence

2016

Abstract This paper presents details pertaining to the dialogue between Eastern Orthodox Churches and Oriental Orthodox Churches. A brief history of the official bilateral meetings between the representatives of these two Christian traditions is sketched in the first part of the paper. The texts which converge by way of doctrine are highlighted. In the second part I present some of the difficulties which still prevent Eucharistic intercommunion between Eastern Orthodoxy and Oriental Orthodoxy, in spite of the doctrinal agreement which has been reached. Finally, some possible solutions are drafted in the last part of the paper, with special reference to Fr. Dumitru Stăniloae’s proposal of br…

Rodziny liturgiczne chrześcijańskiego Wschodu – panorama

2014

The life of the Eastern Churches and their liturgies still remain a deep well of undiscovered riches for many, their fertile and varied traditions are signposts indicating ways of being authentically Christian and truly catholic – in the full universal sense of that word. The return ad fontes liturgicos , called for by the Second Vatican Council, drew deeply from the wisdom of the ancient Churches, which were born – as indeed was the whole of Christianity – “in the East”; the research that was to follow, based on this essential insight, allowed many to reach that desired goal. That sense of dealing with the seamless and undivided garment of the tradition of the whole Church, allowed a compl…

Enantioselective α-alkylation of unsaturated carboxylic acids using a chiral lithium amide

2001

Abstract The regio- and stereochemistry of the alkylation of dienediolates from unsaturated carboxylic acids with benzylic halides, which often results in mixtures of isomers, can be controlled by means of changes in the lithium amide, allowing the α-regioisomer to be obtained as the major diastereoisomer. In addition, when chiral amines are used, moderate enantiomeric excesses can be attained.

ChemInform Abstract: Enantioselective α-Alkylation of Unsaturated Carboxylic Acids Using a Chiral Lithium Amide.

2010

Abstract The regio- and stereochemistry of the alkylation of dienediolates from unsaturated carboxylic acids with benzylic halides, which often results in mixtures of isomers, can be controlled by means of changes in the lithium amide, allowing the α-regioisomer to be obtained as the major diastereoisomer. In addition, when chiral amines are used, moderate enantiomeric excesses can be attained.

The global, regional, and national burden of cirrhosis by cause in 195 countries and territories, 1990-2017 : a systematic analysis for the Global Bu…

2020

Background\ud \ud Cirrhosis and other chronic liver diseases (collectively referred to as cirrhosis in this paper) are a major cause of morbidity and mortality globally, although the burden and underlying causes differ across locations and demographic groups. We report on results from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2017 on the burden of cirrhosis and its trends since 1990, by cause, sex, and age, for 195 countries and territories.\ud \ud \ud \ud Methods\ud \ud We used data from vital registrations, vital registration samples, and verbal autopsies to estimate mortality. We modelled prevalence of total, compensated, and decompensated cirrhosis on the bas…