A revision of the Lower Cretaceous foraminiferal genus Falsogaudryinella from northwest Europe and Romania, and its relationship to Uvigerinammina

We emend the definition of the foraminiferal genus Falsogaudryinella Bartenstein, 1977 based on observations of the type species, F. tealbyensis from the Barremian Lower Tealby Clay of Lincolnshire, U.K. The genus was described by Loeblich & Tappan (1987) as having initial triserial coiling which reduces to biserial and finally uniserial. However, topotype specimens display high trochospiral coiling in the microsphaeric generation, with at least four chambers in the initial whorl. The genus, therefore, does not belong in the family Verneuilinidae, but must be transferred to the Prolixoplectidae. The wall is solid, non-canaliculate. The connections between chambers are in the form of tubes that extend from the basal part of the chamber lumina toward a terminal aperture. This tubular connection is partially separated from the main part of the chamber lumina by a septum. The presence of this tubular connection in F. tealbyensis is closely analogous to that observed in the type species of Uvigerinammina Majzon, 1943. The two genera, therefore, are separated mainly on the basis of cement type, with Falsogaudryinella possessing calcareous cement and Uvigerinammina organic cement. We illustrate five species of Falsogaudryinella from the Barremian of Lincolnshire, the U.K. sector of the Central North Sea, and from the Barremian and the Albian of Romania (F. neagui Bartenstein, 1981, F. praemoesiana n.sp. F. tealbyensis (Bartenstein, 1956), F. xenogena n.sp. and F. moesiana (Neagu, 1966)). Our investigations reveal that upper Hauterivian to Barremian specimens from the North Sea that have been previously regarded as F. moesiana (e.g. King et al., 1989) in fact belong in a new species, Falsogaudryinella praemoesiana n.sp. A second new species, Falsogaudryinella xenogena n.sp. is described from the Barremian of the Central North Sea. Evolution within the mid- Cretaceous Falsogaudryinella group appears to progress by reduction of the terminal uniserial part, since the coiling in the stratigraphically youngest form (F. moesiana) is predominantly triserial. Our interpretations of the phylogeny of the Cretaceous Falsogaudryinella and Uvigerinammina lineages are presented

Clustering and percolation in lithium borate glasses

Journal URL: http://jcp.aip.org/jcp/staff.js

The workshops and working areas of Minoan Crete : the evidence of the palace and town of Zakros for a comparative study

3 volsSIGLEAvailable from British Library Document Supply Centre- DSC:DX85980 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Managing risks to drivers in road transport

This report presents a number of case studies in managing risks to road transport drivers. The cases feature a variety of initiatives and interventions to protect drivers.In the road transport sector, as with any other, it is important to pay attention to working conditions in order to ensure a skilled and motivated workforce. Certain characteristics of the sector make it more difficult to practice risk management than in other sectors. But by taking account of how the sector operates in practice, and the characteristics of drivers themselves and the way they work, risks can be successfully manage

Valoarea PSA-ului în depistarea şi terapia cancerului de prostată

Summary The serum levels of the PSA were determined in 150 patients with signs and symptoms of the disease and the sensitivity of the PSA values was studied in the diagnosis of prostate cancer (PC). The average age of the beginning of the disease was 68.2±0.5 years. In 49 patients (32.7%) PC was d e ­ tected. In 9 (18.4%) cases the results were false negative. The average level of PCA in PC was of 44.2 ng/ml vs 8.6 ng/ml in BPH, and in PC the level ranged from 1.2 to 161 ng/ml. The results demonstrate that the annual screening of men aged 45-50 years is necessary for early detection of PC

Response of Benthic Foraminifera to organic matter quantity and quality and bioavailable concentrations of metals in Aveiro Lagoon (Portugal)

This work analyses the distribution of living benthic foraminiferal assemblages of surface sediments in different intertidal areas of Ria de Aveiro (Portugal), a polihaline and anthropized coastal lagoon. The relationships among foraminiferal assemblages in association with environmental parameters (temperature, salinity, Eh and pH), grain size, the quantity and quality of organic matter (enrichment in carbohydrates, proteins and lipids), pollution caused by metals, and mineralogical data are studied in an attempt to identify indicators of adaptability to environmental stress. In particular, concentrations of selected metals in the surficial sediment are investigated to assess environmental pollution levels that are further synthetically parameterised by the Pollution Load Index (PLI). The PLI variations allowed the identification of five main polluted areas. Concentrations of metals were also analysed in three extracted phases to evaluate their possible mobility, bioavailability and toxicity in the surficial sediment. Polluted sediment in the form of both organic matter and metals can be found in the most confined zones. Whereas enrichment in organic matter and related biopolymers causes an increase in foraminifera density, pollution by metals leads to a decline in foraminiferal abundance and diversity in those zones. The first situation may be justified by the existence of opportunistic species (with high reproduction rate) that can live in low oxic conditions. The second is explained by the sensitivity of some species to pressure caused by metals. The quality of the organic matter found in these places and the option of a different food source should also explain the tolerance of several species to pollution caused by metals, despite their low reproductive rate in the most polluted areas. In this study, species that are sensitive and tolerant to organic matter and metal enrichment are identified, as is the differential sensitivity/tolerance of some species to metals enrichment.CNPq [401803/2010-4]; [PEst-OE/CTE/UI4035/2014]info:eu-repo/semantics/publishedVersio

Контрастный градиент метаморфизма: Барровенский тип относительно высокобарических преобразований на примере северной окраины Гондваны (СЗ Иберия)

Контрастный метаморфизм в соседних террейнах характерен для крупномасштабных тектонических событий, которые включают сценарии как коллизии, так и рифтинга, когда один из этих террейнов характеризуется наличием пород высокого давления. Он, скорее всего, будет связан обычно в местах, близких к сутурным зонам. Примером этих комплексов в геодинамическо

Premisele teoretice, privind formarea micro- și nanodimensională a acoperirilor de fier electrolitic cu proprietăți de autolubrifiere rezistente la uzare

În lucrare sunt prezentate rezultatele cercetărilor teoretice, privind elaborarea premiselor teoretice de utilizare a caprolactamei pentru formarea micro- și nano- dimensională a acoperirilor de fier electrolitic cu proprietăți de autolubrifiere