Search results for "WES"

Salmo trutta is more sensitive than Oncorhynchus mykiss to early-life stage exposure to retene

2021

Salmonids are known to be among the most sensitive fish to dioxin-like compounds (DLCs), but very little is known about the sensitivity of the brown trout (Salmo trutta), which has declined and is endangered in several countries of Europe and Western Asia. We investigated the sensitivity of brown trout larvae to a widespread dioxin-like PAH, retene (3.2 to 320 μg.L−1), compared to the larvae of a salmonid commonly used in toxicology studies, the rainbow trout (Oncorhynchus mykiss). Mortality, growth, cyp1a induction and the occurrence of deformities were measured after 15 days of exposure. Brown trout larvae showed a significantly higher mortality at 320 μg.L−1 compared to rainbow trout lar…

Comment on “Worldwide Distribution of PK Deficiency: the Defect Seems Mainly Concentrated in West African Countries and the United States.”

2021

Applications of the X-ray fluorescence analysis to the cultural patrimony of the Comunidad Valenciana (Spain): Painting, metal and paper

1999

We present examples of the application of the X-ray fluorescence (XRF) to the study of the artistic and cultural patrimony of the Comunidad Valenciana in the following areas: a) Valencian paintings of the XV and XVI centuries; b) silver ornaments coming from Iberian towns (s. III b.C.); c) ink and paper samples in manuscripts and engravings of the XVII and XIX centuries. The non destructive analyses are carried out “in situ” using a XRF system that consists of a tube of X-rays of 50 kV and 1 mA, and a detector of Si(Li) with an energy resolution 140 eV (FWHM at 5.9 keV).

A critical comment on ‘ankyroids’ (Echinodermata, Stylophora)

2001

Abstract A recent cladistic analysis of stylophoran echinoderms performed by Parsley suggested that mitrates are polyphyletic and derived from symmetrical cornutes. Parsley erected the order Ankyroida to include all derived cornutes and mitrates. The present paper addresses several significant problems in the data matrix of Parsley's cladistic analysis. Detailed morphological comparisons of various stylophorans suggest that important homologies have been ignored: cornute zygal crest and mitrate septum, adorals, glossal and digital. Subanals are not homologous in mitrates. Identification of plate homologies shows that similar-looking symmetrical thecal outlines have been acquired independent…

Séries charbonneuses dans des séquences rétrogradantes: cas du bassin houiller paralique westphalien de Jérada (Maroc)

1998

Abstract Several orders of stacked genetic sequences in the Westphalian C of the Jerada Basin are defined from detailed sedimentological data. Eight coal seams were formed in this paralic basin as distal facies passed laterally into proximal facies in retrogradational stages. These stages are related to base level rises that curtailed detrital influx and induced the development of swamps and the preservation of organic matter below anoxic water levels. The base level variations are related to active faulting along the basin margins and to sea level changes in the Palaeo-Tethys.

First carboniferous conulariids from Niger (west Africa)

1995

Abstract Two new conulariid species, Paraconularia feldmanni sp. nov. and P. sahara sp. nov., are described from the Lower Carboniferous (Visean) Talak Formation of northern Niger. These are the first example of the genus Paraconularia to be reported from Africa and the first Carboniferous conulariids from that continent to be assigned to species level. Previously reported Carboniferous conulariids from Africa were collected from Morocco, assigned to other genera, and left in open nomenclature. Paraconularia is interpreted to have been cosmopolitan by the Early Carboniferous, and is the dominant genus in most assemblages of Carboniferous conulariids.

Echelles biostratigraphiques du Meso-Cenozoique, ouest-europeen; synthese, applications et perspectives--The Meso-Cenozoic biostratigraphic framework…

1995

Izrael a Palestyńczycy. Wojna i okupacja jako rozwiązanie?

2015

Celem artykułu jest szkic analizy konfliktu izraelsko-palestyńskiego, zwłaszcza w kontekście sposobu radzenia sobie przez państwo żydowskie z palestyńskim ruchem narodowowyzwoleńczym. W pierwszej części zwrócono uwagę na specyficzne okoliczności powstania Izraela – państwo to miejscowa ludność arabska uznała za ostatni europejski projekt kolonialny. Następnie opisano tak zwaną matrycę kontroli nad Palestyńczykami, którą zaprezentował antropolog i aktywista pokojowy Jeff Halper. W ostatniej części skupiono się na Operacji Ochronny Brzeg i jej ofiarach, głównie palestyńskich cywilach. Artykuł kończy się wskazaniem dwóch generalnych kierunków, w których może ewoluować opisywany konflikt.

Rb-Sr geochronology in favour of polymetamorphism in the Pan African Damara belt of Namibia (South West Africa)

1978

New Rb-Sr whole rock age data are reported from two metasedimentary sequences of the Damara Supergroup in the central Pan African Damara belt of Namibia (South West Africa).

Neuroglobin and cytoglobin overexpression protects human SH-SY5Y neuroblastoma cells against oxidative stress-induced cell death

2006

Although reactive oxygen species (ROS) at physiological concentrations are required for normal cell function, excessive production of ROS is detrimental to cells. Neuroglobin and cytoglobin are two globins, whose functions are still a matter of debate. A potential role in the detoxification of ROS is suggested. The influence of neuroglobin and cytoglobin on cell death after oxidative stress in human neuroblastoma SH-SY5Y cells was evaluated. Exposure of SH-SY5Y cells to paraquat or H(2)O(2) resulted in a concentration- and time-dependent induction of apoptotic and necrotic cell death. H(2)O(2) was 16 times more potent to induce cell death as compared to paraquat. SH-SY5Y cells transfected w…