bluuebunny/crossref_metadata_2025 huggingface dataset:
Palaeoenvironments in the Vale of Pickering. Part I: Stratigraphy and Palaeogeography of Seamer Carr, Star Carr and Flixton Carr
Authors: Cloutman E. W.
Published: February 2014

A contour map of part of the basin of the glacial Lake Pickering was constructed from surface and sub-surface levels. This map (figs 2, 3 and 4) gives a pictorial representation of the microtopography of the area and is amplified by an additional map (fig. 13) in which the margin of the organic deposits is given for the early Mesolithic period, based on evidence outlined below. A stratigraphical survey of the basin deposits shows that the infilling of the lake in the Devensian Late-glacial began largely with the deposition of calcareous muds. In the early Flandrian there followed a natural hydroseral development from open water to reedswamp and fen carr. Towards the end of the Boreal period and during the early Atlantic, a rise in water level was responsible for the replacement of fen carr by reedswamp. The rate of hydroseral development was affected by a progressive rise of water level. This has been determined (estimated) by radio-carbon dating the basal organic muds on the 23, 24 and 25 m OD sub-surface contours at eight sites within the study area. During the early Mesolithic (Godwin's pollen Zone IV, c.9600 BP)the water level in the basin was likely to have been in the range of 23–24.5 m OD. By reference to the dating evidence, including published pollen diagrams (Walker and Godwin 1954) and new data presented in Parts 2 and 3, the stratigraphical evidence is interpreted to show that there was considerable variation in the vegetation of the lake margin during the early Mesolithic period (pollen Zone IV). At Seamer Carr there was a large area of fen carr woodland with reedswamp fringing the open water. Star Carr had a much larger area of reedswamp, with open water close to the dry land in places, but with a narrow fringe of carr. The bed of the ancient River Hertford, which drained the basin, probably in the late Mesolithic, has been identified in two of the sections which traverse the basin.
Palaeoenvironments in the Vale of Pickering. Part 2: Environmental History at Seamer Carr
Authors: Cloutman E. W.
Published: February 2014

A three-dimensional study of the vegetational history of Seamer Carr from the Devensian Late-glacial to the Atlantic period has been made with the aid of six sites in the main basin. Five of these are close to the margins of the organic deposits and the sixth is from deep basin deposits. The Godwin zonation scheme has been used to allow a direct comparison with the survey of Walker and Godwin (1954). A composite section through the basin deposits, based on the detailed contour plan described in Part 1, shows that, pre-Zone IV, the open water margin abutted the dry land, and that during Zone IV reedswamp and carr gradually filled in the edges of the lake. Large expanses of fen carr occupied Seamer Carr during Zone V, but a rise in water level during Zone VI was responsible for the area reverting to reedswamp. At the Boreal/Atlantic transition, coincident with the rise in the alder pollen curve, there is a thick band of highly humified, acid peat, full of microscopic pieces of charcoal. Analysis through this band at one of the specially selected sites on East Island produced evidence of local disturbance, seemingly anthropogenic, at the wetland margin. There were two other special sites in West Embayment that were sampled for pollen analysis. The first was located over a radiocarbon dated Zone II organic deposit, sealed beneath a Zone III calcareous sand layer. The second was located in a late Mesolithic organic mud radiocarbon dated to c. 8000 BP and containing an assemblage of microliths of late Mesolithic type, identified tentatively as a composite tool (A. David pers. comm.).
Palaeoenvironments in the Vale of Pickering. Part 3: Environmental History at Star Carr
Authors: Cloutman E. W. , Smith A. G.
Published: February 2014

Detailed boring records and surface levels, combined with knowledge of the rate of extension of organic deposits in the lake basin (Part 1), allow the production of a computer-generated contour map and isometric drawings of the microtopography of the area around the Star Carr site of Clark (1954) (figs 1 and 2). The site was at the mouth of a shallow gully on the southern face of a hillock of glacial till which could be reached from the higher ground to the N over dry ground. The hillock extended into the lake basin as a low peninsula ending in a spit, at the entrance to its relatively narrow outflow channel. The occupation area was at a point where the open water most closely approached the shore and extended from the marginal wetland on to the dry slopes of the hillock.

Pollen and lithological analysis, combined with extensive C14 dating, is described at four closely spaced points along a section through the basin deposits close to the Star Carr site. Dated sequences of local vegetation development are established. The results are used to reconstruct pictorially the environmental changes through a period of occupation contemporaneous with, and presumably an extension of, the occupation of the Star Carr site (fig. 9). The dry ground supported birch wood throughout, but natural successional changes in the wetland, on a nominal timescale, were as follows:

(a) At 9800 BP the open water of the lake lapped the shore save for a narrow zone of reeds, sedges and water plants.

(b) By 9650 BP immediately before the occupation, reedswamp dominated by the great reed (Phragmites) had extended well into the basin. There was a narrow drier zone at the landward side of the reedswamp with abundant ferns enclosing a damper patch with fen plants.

(c) At the time of the occupation, around 9600 BP, the inshore reedswamp had largely been replaced by fen dominated by the saw sedge (Cladium). The marginal environment, where artefacts were found, was still dominated by ferns but a wood layer occupied the former damp fen area, presumably having been deliberately emplaced to consolidate the ground. Cladium fen and fringing reedswamp formed an extensive tract to the E of the occupation area behind the spit mentioned above, and probably also to the W.

(d) By 9300 BP (on the nominal timescale used for the reconstruction) the occupation was over and the wood layer and an associated ‘brown layer’ were covered by Cladium deposits on which willows were now growing.

Attention is drawn to the need for detailed work on the taphonomy of artefacts as a component of any further excavation in the organic deposits of the Vale of Pickering.
Neolithic Explanations Revisited: The Mesolithic-Neolithic Transition in Britain and South Scandinavia
Authors: Thomas Julian
Published: February 2014

The inception of the Neolithic has always been one of the more vexed questions of British prehistory. As an issue, it has been obscured by a number of conceptual difficulties. Not least amongst these is that the transition from the Mesolithic to the Neolithic coincides with the point at which two different and opposed approaches to prehistory and its teaching meet. The first of these, which dominates the study of the Palaeolithic and Mesolithic periods, is concerned with human behaviour in terms of adaptive responses to environmental pressures. The latter, more common in the Neolithic and later periods, is more likely to consider human beings as purposive subjects, acting in pursuit of socially-defined goals. As a result, the Mesolithic-Neolithic transition represents not merely a change of lifestyle, but also a point at which our perception of the past changes. It is the boundary between two models of man.
Material Culture Texts and Social Change: A Theoretical Discussion and some Archaeological Examples
Authors: Hodder Ian
Published: February 2014

Material culture meanings are transferred between objects on the basis of similarities and differences. In order to fix the potential ambiguity of meanings, experience is bracketed within bounded contexts. New acts always refer back to existing organized experience or texts. It can be argued that text comes before action. This idea is used in a discussion of the appearance of agglomerated and bounded settlements in the European Neolithic. It is shown that occupied settlements are often preceded by non-domestic enclosures which sometimes have a ritual nature. Ritual text seems to prefigure practical event. A similar relationship between formalized ritual texts and social action is shown in a wide range of other examples. Finally some of the potential reasons for the observed relationship between text and action are discussed.
Armorican Vases à Anses and Their Occurrence in Southern Britain
Authors: Tomalin David J.
Published: February 2014

Ever since Martin's definition of Breton tumulus burials in 1900 the discrete distribution of biconical handled vases orvases à anseshas been well known (Martin 1900). In 1928 details of similar vessels in the Channel Isles became readily available through Kendrick's survey of the Bailiwick of Guernsey (1928). In Southern Britain, however, the nineteenth century finds at Portland G2 and Winterbourne Stoke G5 have reained unconfirmed and consequently discussions on Armorico-Wessex connections in the Early Bronze Age have treated the question of cross-Channel ceramic exchange with notable circumspection.
Cows and Kings: Models for Zimbabwes
Authors: Barker Graeme
Published: February 2014

This paper discusses the complex societies which flourished on the central plateau of southern Africa between the Zambezi and Limpopo rivers between c. AD 800 and 1500, and the models which can be proposed for how they functioned and why they developed. The principal archaeological monuments left by these societies are their regional political centres, the stone enclosures or zimbabwes (fig. 1), of which Great Zimbabwe is the best known and most elaborate (fig. 2). (The traditional spelling zimbabwe(s) is used in this paper rather than the correct but lesser known spelling dzimbahwe singular and madzimbahwe plural.) They varied considerably in size, but the largest probably housed populations numbering several thousands — Great Zimbabwe itself has been estimated to have had a population of some 30,000 people (Huffman 1984) — and their construction implies organized labour on a substantial scale. The main population lived in densely clustered huts outside the stone enclosure. Artefacts suggest that they were commoners, with the servants of the king and minor officials living close to the central hill. Beyond was an outer ring of prestige residences with their own housing units (fig. 2). ‘Great Zimbabwe was the product of a highly stratified society: the stone walls are essentially demonstrations of the prestige of a ruling class, a symbol of political authority that spread over the whole plateau’ (Garlake 1973, 14).
A Late Bronze Age Enclosure at Lofts Farm, Essex
Authors: Brown N. , Holgate R. , Major H. , Murphy P.
Published: February 2014

A double-ditched sub-rectangular enclosure measuring c.42 by 48 m was excavated. It was shown to have been a Late Bronze Age settlement, with a single central roundhouse opposite the only entrance, and with a rectangular structure in one corner. The site produced a typical range of Late Bronze Age artefacts. The site is low-lying, and environmental data from the waterlogged fills of a well indicate an open landscape of damp grassland. These factors together with the absence of waste from the earliest stages of crop-cleaning among carbonized plant remains from the enclosure, point to a primarily pastoral economy.

A few Neolithic features and artefacts were also found but these are not considered to represent permanent settlement.
The Invention of Words for the Idea of ‘Prehistory’
Authors: Chippindale Christopher
Published: February 2014

The standard recent authorities on the history of archaeology date the invention of a specific word for prehistory to 1833, saying that Paul Tournal of Narbonne used the adjective préhistorique (‘prehistoric’ in the English translation in Heizer 1969, 91; and in Daniel 1967, 25, following Heizer 1962) or the noun préhistoire (Daniel 1981,48) in an article about French bone-caves.

This is not true. The word Tournal used was antéhistorique (Tournal 1833, 175), and the mistake has arisen from working with an idiomatic translation into English, which rendered ‘anté-historique’ as ‘prehistoric’ (Tournal [1959]) instead of the original French. (Grayson 1983, 102., however, quotes Tournal's original French correctly.) The earliest use of ‘prehistoric’ seems to be Daniel Wilson's of 1851 in The Archaeology and Prehistoric Annals of Scotland (1851), as the older histories of archaeology say (eg Daniel 1950, 86 (reprinted in Daniel 1975, 86); Daniel 1962, 9), before the error about Tournal began to circulate.
The Chalk Plaque Pit, Amesbury
Authors: Harding Philip
Published: February 2014

Well-defined late Neolithic structures in lowland Britain are rare. The contents of pits with Grooved Ware have, therefore, been used to interpret both settlement patterns and economic activity in this period. Pits occur both individually and in groups, are normally circular or slightly oval in plan and rarely exceed 1 m in diam or 2 m in depth (Wainwright and Longworth 1971, 250). Most were probably for grain storage (Field et al. 1964, 367) which were later filled with refuse.

The Amesbury area, 3 km E of Stonehenge, has produced several groups of pits of this type. They include five at Ratfyn (SU 15954205) N of Amesbury (Stone 1935; Warren et al. 1936, 196), four at Woodlands (SU 151431) 250 m S of Woodhenge (Stone and Young 1948; Stone 1949), a group within a henge on Coneybury Hill (SU 13434161) (Richards 1984, 183) and others on King Barrow Ridge (SU 135425) (Richards 1984).
Excavations at Hog Cliff Hill, Maiden Newton, Dorset
Authors: Ellison Ann , Rahtz Philip , Ensom P. C. , Otlet R. L. , Williams D. F. , Wilthew P.
Published: February 2014

A segment of earlier Bronze Age arable landscape incorporating isolated round barrows on the high chalk spur of Hog Cliff Hill became the chosen location for a later Bronze Age earthwork of considerable dimensions. The area excavated within the bank and ditch was densely occupied by two major phases of buildings of timber construction, lasting into the earliest Iron Age. Sometime during the early Iron Age the oval enclosure was replaced by a more substantial one which partly followed its line and contained a series of unusual structures comprising dry-stone flint banks or wall-footings. The site was subsequently abandoned, the land probably being returned to agricultural use, until the Roman period when the agger of the Roman road from Dorchester to Ilchester was constructed across the earthwork.
A Preliminary Lithic Analysis of the Mousterian Site of ’Ain Difla (WHS Site 634) in the Wadi Ali, West-Central Jordan
Authors: Lindly John , Clark Geoffrey
Published: February 2014

Test excavations in 1984 at the middle palaeolithic rockshelter of 'Ain Difla (Wadi Hasa Survey Site 634) in west-central Jordan produced a lithic assemblage dominated by elongated levallois points with very few retouched tools. Length/width ratios of the levallois points and width/thickness ratios of a sample of complete flakes suggest an affinity with Tabun D/Phase 1 mousterian sites. This kind of assemblage is generally thought to occur during the early Levantine mousterian. However, there is evidence of persistence of Tabun D assemblages in the southern Levant until the middle/upper palaeolithic transition. Comparing the ’Ain Difla lithic assemblage with those of other Levantine mousterian sites underscores problems with the analytical frameworks used to ‘date’ sites through technological and metrical analyses. A rather coarse-grained regional paleoenvironmental sequence exacerbates these problems.
Magdalenian Settlement and Subsistence in South-west Germany
Authors: Weniger Gerd-C.
Published: February 2014

Magdalenian settlement systems and man/land relationships in South-west Germany are reconstructed, using archaeological evidence and modern ethnographic observation. Archaeological sites are divided into four size categories, each with distinctive structural and artefactual records, and assigned to different seasonal and functional uses in the annual subsistence cycle. Hunting of reindeer and horse dominated and, in contrast to previous theories of long-distance reindeer following, a territorial model of land-use is proposed.
A Preliminary Survey of Late Neolithic Settlements at el-Ghirqa,
Eastern Jordan
Authors: Betts Alison , Helms Svend
Published: February 2014

Survey in the inhospitable steppe lands of eastern Jordan has revealed late
neolithic settlements, part of a settlement pattern probably of the sixth
millennium BC. Faunal and artefactual evidence is sparse, but the sites are
characterized by lithic assemblages dominated by burins. Analysis of the
structures and their relationship to artefactual deposits offer
opportunities for further research.
Bronze Age Settlement on the East Moors of the Peak District of Derbyshire and South Yorkshire
Authors: Barnatt John
Published: February 2014

The Bronze Age remains on the East Moors of the Peak District are amongst the most extensive in the country. This paper discusses their interpretation and examines the pattern of man's exploitation of the region at this period. The distribution of the remains is far from random and concentrates on areas which are the most suitable for agriculture. Prolonged mixed farming in the most favourable areas is argued for. Similar topographic characteristics throughout the area enable estimates to be made of the original levels of exploitation in the region as a whole and the degree to which field evidence has been destroyed. The pattern of settlement suggests the Bronze Age farmers lived in small groups, each exploiting its own relatively self-contained area of upland and each having a handful of ceremonial monuments. There is no evidence for a complex social hierarchy reflected by monuments or settlement patterns. Comparisons are made between the East Moor sites and those in other regions. These suggest varying levels of social organization and types of exploitation in the Bronze Age and illustrate the value of regional studies to highlight the diversity of Bronze Age lifestyle throughout Britain.
Eight Ring-ditches at Four Crosses, Llandysilio, Powys, 1981–85.
Authors: Warrilow Walt , Owen Glyn , Britnell William , Bowmer M. , Crew P. , Darvill T. C. , Dresser P. Q. , Green H. S. , Milles A. , Morgan G. C. , Morgan L. , Needham S. P. , Noddle B. A. , Ryder M. L. , Staddon B. W. , Webster P. V. , Wilkinson J. L. , Wimble G.
Published: February 2014

Eight ring-ditches and several stretches of pit alignment have been excavated between 1981 and 1985, as part of the investigation of an extensive cropmark complex on a gravel terrace in the Upper Severn valley at Four Crosses, northern Powys. Excavation of the ring-ditches, which form part of a more scattered barrow cemetery, has revealed a long and complex pattern of development of barrow types and burial forms in the period between the Middle Neolithic and the Middle Bronze Age. This is compared with the recently published sequence from the neighbouring upland barrow cemetery at Trelystan, and subdivided into four hypothetical phases. There is evidence of activity in the vicinity of some of the sites in the Iron Age, Romano-British, and possibly the early post-Roman period.
Neutron Activation Analysis of Later Prehistoric Pottery from the Western Isles of Scotland.
Authors: Topping Patrick G.
Published: February 2014

The pottery of the later prehistoric period in the Western Isles of Scotland displays a variety of decorative styles and forms not found elsewhere on the Scottish mainland. Traditional approaches have attempted to define stylistic sequences or to identify wares to which chronological and cultural labels may be attached. In this study neutron activation analysis was utilized to examine if the distinctions which had been drawn were mirrored by chemical composition. Analysis of clay beds had indicated that the analytical and statistical techniques which were employed were sensitive enough to identify patterns which existed within the data. The results for the later prehistoric ceramics indicated that pottery was probably locally produced and locally distributed and that the clays involved in the manufacture of metalworking moulds and crucibles were different in terms of source or method of preparation from those employed in the manufacture of the more mundane range of domestic vessels.
Excavations at an Iron Age Defended Enclosure at Tattershall Thorpe, Lincolnshire.
Authors: Chowne Peter , Girling Maureen , Greig James
Published: February 2014

Excavation of a late Iron Age enclosure at Tattershall Thorpe, Lincolnshire, produced substantial quantities of organic material preserved in the ditch filling. Insect, pollen and plant macrofossil remains allowed reconstruction of the environment and human activity in the area. Evidence for cultivation, grassland and human activities in the enclosure is discussed.
The Carbon-14 Chronology of the Early and Middle Neolithic of
Southern Italy
Authors: Sargent Andrew
Published: February 2014

Investigations into the ceramic typology of the southern Italian neolithic
have helped little in the understanding of neolithic origins there. In this
paper the evidence of the radiocarbon chronology is used to demonstrate the
antiquity of the southern Italian neolithic. There are now sufficient sixth
millennium bc dates to suggest that the appearance there of a neolithic with
mixed impressed and red-painted wares was contemporary with the earliest
neolithic of both Greece and the West Mediterranean, while the penetration
of those traits further north into Italy seems to have been delayed.
British Iron Age Strap-Unions
Authors: Taylor R. J. , Brailsford J. W.
Published: February 2014

Strap-unions of the types discussed in this study were made during the later part of the pre-Roman Iron Age and during the earliest part of the Roman occupation of Britain. Their distribution (fig. 1) and details of their chronology and cultural associations and also the evidence for their precise use are considered in the concluding sections of this paper.
Wojtek Dziembowski: selected photos and events of his scientific biography
Authors: Pamyatnykh Alexey A.
Published: February 2014

Selected events of the scientific biography of Wojtek Dziembowski are briefly described, and several related photos are presented. The full version of the presentation is available at the IAU Symposium 301 webpage.
Identification of pulsation modes from spectroscopy
Authors: Uytterhoeven Katrien
Published: February 2014

Time-series of high-resolution spectra of massive main-sequence pulsators contain information on the degree l and azimuthal number m of a pulsation mode. I present an overview of existing mode-identification techniques that have been developed to derive l and m from spectroscopic data. I also discuss the data quality needed to perform such a study. Through some examples from the literature I show that the optimal way to identify modes in heat-driven non-radial pulsators is by 1) using multi-site campaign data, 2) combining different spectroscopic mode-identification techniques, and 3) combining results from photometric and spectroscopic mode-identification studies.
Helioseismology in the 1980s and 1990s
Authors: Goode Philip R.
Published: February 2014

Over more than twenty years, Wojtek Dziembowski and I collaborated on nearly fifty papers, which were concentrated in helioseismology through the 1980s and 1990s, but extended early into the new century. In this review, I discuss the most significant results of this collaboration and some of the underlying sociology that contributed to the intensity and longevity of our collaboration. Our work began with placing limits on the Sun's buried magnetic field and ended with extracting from the solar-cycle dependent oscillation frequency changes the roles (and net result) of competing dynamical drivers of changes in the solar diameter.
Transport of angular momentum in solar-like oscillating stars
Authors: Goupil Mariejo , Deheuvels Sébastien , Marques Joao , Lebreton Yveline , Mosser Benoit , García Rafa , Belkacem Kevin , Mathis Stéphane
Published: February 2014

Our current understanding and modeling of angular momentum transport in low-mass stars are briefly reviewed. Emphasis is set on single stars slightly younger that the Sun and on subgiants and red giants observed by the space missionsCoRoTandKepler.
Pulsations of rapidly rotating stars with compositional discontinuities
Authors: Reese Daniel R. , Lara Francisco Espinosa , Rieutord Michel
Published: February 2014

Recent observations of rapidly rotating stars have revealed the presence of regular patterns in their pulsation spectra. This has raised the question as to their physical origin, and, in particular, whether they can be explained by an asymptotic frequency formula for low-degree acoustic modes, as recently discovered through numerical calculations and theoretical considerations. In this context, a key question is whether compositional/density gradients can adversely affect such patterns to the point of hindering their identification. To answer this question, we calculate frequency spectra using two-dimensional ESTER stellar models. These models use a multi-domain spectral approach, allowing us to easily insert a compositional discontinuity while retaining a high numerical accuracy. We analyse the effects of such discontinuities on both the frequencies and eigenfunctions of pulsation modes in the asymptotic regime. We find that although there is more scatter around the asymptotic frequency formula, the semi-large frequency separation can still be clearly identified in a spectrum of low-degree acoustic modes.
Pulsation – convection interaction
Authors: Kupka F. , Mundprecht E. , Muthsam H. J.
Published: February 2014

A lot of effort has been devoted to the hydrodynamical modelling of Cepheids in one dimension. While the recovery of the most basic properties such as the pulsational instability itself has been achieved already a long time ago, properties such as the observed double-mode pulsation of some objects and the red-edge of the classical instability strip and their dependence on metallicity have remained a delicate issue. The uncertainty introduced by adjustable parameters and further physical approximations introduced in one-dimensional model equations motivate an investigation based on numerical simulations which use the full hydrodynamical equations. In this talk, results from such two-dimensional numerical simulations of a short period Cepheid are presented. The importance of a carefully designed numerical setup, in particular of sufficient resolution and domain extent, is discussed. The problematic issue of how to reliably choose fixed parameters for the one-dimensional model is illustrated. Results from an analysis of the interaction of pulsation with convection are shown concerning the large-scale structure of the He ii ionization zone. We also address the influence of convection on the atmospheric structure. Considering the potential of hydrodynamical simulations and the wealth of ever improving observational data an outlook on possible future work in this field of research is given.
Pulsations as a mass-loss trigger in evolved hot stars
Authors: Kraus Michaela , Nickeler Dieter H. , Haucke Maximiliano , Cidale Lydia , Venero Roberto , Fernandes Marcelo Borges , Tomić Sanja , Curé Michel
Published: February 2014

During their post-main sequence evolution, massive stars pass through several short-lived phases, in which they experience enhanced mass loss in the form of clumped winds and mass ejection events of unclear origin. The discovery that stars populating the blue luminous part of the Hertzsprung-Russell diagram can pulsate suggests that stellar pulsations might influence or trigger enhanced mass loss and eruptions. We present recent results for two objects in different phases: a B[e] star at the end of the main sequence and a B-type supergiant.
The origin and pulsations of extreme helium stars
Authors: Jeffery C. Simon
Published: February 2014

Stars consume hydrogen in their interiors but, generally speaking, their surfaces continue to contain some 70% hydrogen (by mass) throughout their lives. Nevertheless, many types of star can be found with hydrogen-deficient surfaces, in some cases with as little as one hydrogen atom in 10 000. Amongst these, the luminous B- and A-type extreme helium stars are genuinely rare; only ~15 are known within a very substantial volume of the Galaxy.

Evidence from surface composition suggests a connection to the cooler R CrB variables and some of the hotter helium-rich subdwarf O stars. Arguments currently favour an origin in the merger of two white dwarfs; thus there are also connections with AM CVn variables and Type Ia supernovae. Pulsations in many extreme helium stars provide an opportune window into their interiors. These pulsations have unusual properties, some being “strange” modes, and others being driven byZ-bump opacities. They have the potential to deliver distance-independent masses and to provide a unique view of pulsation physics.

We review the evolutionary origin and pulsations of these stars, and introduce recent progress and continuing challenges.
Solar-like oscillations in subgiant and red-giant stars: mixed modes
Authors: Hekker S. , Mazumdar A.
Published: February 2014

Thanks to significant improvements in high-resolution spectrographs and the launch of dedicated space missions MOST, CoRoT and Kepler, the number of subgiants and red-giant stars with detected oscillations has increased significantly over the last decade. The amount of detail that can now be resolved in the oscillation patterns does allow for in-depth investigations of the internal structures of these stars. One phenomenon that plays an important role in such studies are mixed modes. These are modes that carry information of the inner radiative region as well as from the convective outer part of the star allowing to probe different depths of the stars.

Here, we describe mixed modes and highlight some recent results obtained using mixed modes observed in subgiants and red-giant stars.
Are RRab stars fully radial?
Authors: Benkő József M. , Szabó Róbert
Published: February 2014

Thanks to the space missions CoRoT and Kepler new oscillation frequencies have been discovered in the Fourier spectra of Blazhko RR Lyrae stars. The period doubling (PD) yields half-integer frequencies between the fundamental mode and its harmonics. In many cases the first and/or second radial overtone frequencies also appear temporally. Some stars show extra frequencies that were identified as potential non-radial modes. We show here that all these frequencies can be explained by pure radial pulsation as linear combinations of the frequencies of radial fundamental and overtone modes.
Strömgren photometry and medium-resolution spectroscopy of some δ Scuti and γ Doradus stars in the Kepler field
Authors: Fox-Machado L.
Published: February 2014

We have obtained CCD photometry and medium-resolution spectroscopy of a number of δ Scuti and γ Doradus stars in the Kepler field-of-view as part of the ground-based observational efforts to support the Kepler space mission. In this work we present the preliminary results of these observations.
KIC 6761539, a fast rotating γ Dor – δ Sct hybrid star
Authors: Herzberg W. , Corre D. , Uytterhoeven K. , Roth M.
Published: February 2014

KIC 6761539 is one of many fast rotating γ Doradus – δ Scuti hybrid pulsators. A search for possible regularities in the frequency spectrum is performed and a first stellar model is presented.
Study of BL Her type pulsating variable stars using publicly available photometric databases
Authors: Jurković Monika , Szabados László
Published: February 2014

BL Her type pulsating variable stars are a subtype of Type II Cepheids, pulsating with periods in the range from 1 to 4 days. The General Catalog of Variable Stars lists 71 objects. For each star from this list, we searched for data in the publicly available photometric databases: AAVSO, ASAS, Catalina Sky Survey, INTEGRAL OMC, LINEAR, NSVS, SuperWASP. The analysis was done separately for each dataset. Here we present first results.
KIC 10486425: A Kepler eclipsing binary system with a pulsating component
Authors: Aliçavuş Filiz Kahraman , Soydugan Esin
Published: February 2014

We present frequency analysis of the Kepler light curve of KIC 10486425, an eclipsing binary system with a pulsating component. The parameters of the binary were obtained by modelling the light curve with the Wilson-Devinney program. The residuals from this modelling were subject to Fourier analysis which allowed us to detect 120 periodic terms characteristic for γ Dor-type pulsations. The dominant frequency of these changes amounts to 1.3189 d−1.
The rich frequency spectrum of the triple-mode variable AC And
Authors: Kovács Géza , Bakos Gáspár A. , Hartman Joel D.
Published: February 2014

Fourier analysis of the light curve of AC And from the HATNet database reveals the rich frequency structure of this object. Above 30 components are found down to the amplitude of 3 mmag. Several of these frequencies are not the linear combinations of the three basic components. We detect period increase in all three components that may lend support to the Population I classification of this variable.
LAMOST observations in the Kepler field
Authors: Molenda-Żakowicz Joanna , De Cat Peter , Fu Jian-Ning , Yang Xiao-Hu ,   the LAMOST-Kepler collaboration
Published: February 2014

We present results of observations of 22 664 stars in the Kepler field of view acquired with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) in the years 2011 – 2012, and provide a database of the atmospheric parameters derived from those data.
On the information content of stellar spectra
Authors: Schou Jesper
Published: February 2014

With the increasing quality of asteroseismic observations it is important to minimize the random and systematic errors in mode parameter estimates. To this end it is important to understand how the oscillations relate to the directly observed quantities, such as intensities and spectra, and to derived quantities, such as Doppler velocity. Here I list some of the effects we need to take into account and show an example of the impact of some of them.
Analysis of rosette modes of oscillations in rotating stars
Authors: Takata Masao , Saio Hideyuki
Published: February 2014

We analyse the rosette modes of oscillations in rotating stars, which are characterised by rosette patterns of the kinetic-energy distribution on the meridional plane. Following our previous argument that these modes are generated by the rotation-induced interaction among eigenmodes with almost the same frequency, we discuss the structure of the rosette patterns base on the JWKB analysis. We also demonstrate that there exist nonaxisymmetric rosette modes.
GYRE: A new open-source stellar oscillation code
Authors: Townsend Rich , Teitler Seth , Paxton Bill
Published: February 2014

We introduce GYRE, a new open-source stellar oscillation code which solves the adiabatic/non-adiabatic pulsation equations using a novel Magnus Multiple Shooting (MMS) numerical scheme. The code has a global error scaling of up to 6th order in the grid spacing, and can therefore achieve high accuracy with few grid points. It is moreover robust and efficiently makes use of multiple processor cores and/or nodes. We present an example calculation using GYRE, and discuss recent work to integrate GYRE into the asteroseismic optimization module of the MESA stellar evolution code.
A search for pulsations in two Algol-type systems V1241 Tau and GQ Dra
Authors: Ulaş Burak , Ulusoy Ceren , Gazeas Kosmas , Erkan Naci , Liakos Alexios
Published: February 2014

We present new photometric observations of two eclipsing binary systems, V1241 Tau and GQ Dra. We use the following methodology: initially, the Wilson-Devinney code is applied to the light curves in order to determine the photometric elements of the systems. Then, the residuals are analysed using Fourier techniques. The results are the following. One frequency can be possibly attributed to a real light variation of V1241 Tau, while there is no evidence of pulsations in the light curve of GQ Dra.
Normative Data for a Spanish Version of the Rey Auditory-Verbal Learning Test in Older People
Authors: Marqués Nuria Ortiz , Caro Imanol Amayra , Uterga Valiente Juan M. , Rodríguez Silvia Martínez
Published: February 2014

The Rey Auditory-Verbal Learning Test is an easy to administer test that assesses many memory domains and is, therefore, widely used in the area of clinical neuropsychology. The purpose of this study was to provide normative data for an elderly population living in Spain. The sample of this study was comprised of 156 volunteers over 60 years of age, which were grouped into six different age groups. These groups comprised of 10 participants between the ages of 61and 65 in the first group, 23 participants (66–70) in the second, 28 participants (71–75) in the third, 35 participants (76–80) in the fourth, 32 participants (81–85)in the fifth and 28 participants (86–95) in the sixth group. Demographic data were collected and means, deviations, and ranges of all the measures were evaluated. Normative data were calculated from the percentiles, and then converted into age-corrected scaled scores with a mean of 10 and a standard deviation of 3.
Atomic-scale mapping of dipole frustration at 90° charged domain walls in ferroelectric PbTiO3 films
Authors: Tang Y. L. , Zhu Y. L. , Wang Y. J. , Wang W. Y. , Xu Y. B. , Ren W. J. , Zhang Z. D. , Ma X. L.
Published: February 2014

The atomic-scale structural and electric parameters of the 90° domain-walls in tetragonal ferroelectrics are of technological importance for exploring the ferroelectric switching behaviors and various domain-wall-related novel functions. We have grown epitaxial PbTiO3/SrTiO3 multilayer films in which the electric dipoles at 90° domain-walls of ferroelectric PbTiO3 are characterized by means of aberration-corrected scanning transmission electron microscopy. Besides the well-accepted head-to-tail 90° uncharged domain-walls, we have identified not only head-to-head positively charged but also tail-to-tail negatively charged domain-walls. The widths, polarization distributions and strains across these charged domain-walls are mapped quantitatively at atomic scale, where remarkable difference between these domain-walls is presented. This study is expected to provide fundamental information for understanding numerous novel domain-wall phenomena in ferroelectrics.
A structural model for glutathione-complexed iron–sulfur cluster as a substrate for ABCB7-type transporters
Authors: Qi Wenbin , Li Jingwei , Cowan J. A.
Published: February 2014

Glutathione-complexed [2Fe–2S] cluster is a likely natural substrate for the ABCB7-type transporter that has been implicated in cytosolic Fe–S cluster protein maturation.
Enantioselective, intermolecular [2+2] photocycloaddition reactions of 3-acetoxyquinolone: total synthesis of (−)-pinolinone
Authors: Mayr Florian , Wiegand Christian , Bach Thorsten
Published: February 2014

The natural product (−)-pinolinone was synthesised via a concise route (six steps, 17% overall yield) from 3-acetoxyquinolone, employing an enantioselective intermolecular [2+2] photocycloaddition as the key step.
Amine-terminated nanoparticle films: pattern deposition by a simple nanostencilling technique and stability studies under X-ray irradiation
Authors: Coxon P. R. , Ahire J. H. , Ashby S. P. , Frogley M. D. , Chao Y.
Published: February 2014

Exploring the surface chemistry of nanopatterned amine-terminated nanoparticle films.
Theoretical study of small sodium–potassium alloy clusters through genetic algorithm and quantum chemical calculations
Authors: Silva Mateus X. , Galvão Breno R. L. , Belchior Jadson C.
Published: February 2014

Structures regarding the growth of sodium–potassium clusters obtained employing electronic structure methods—from high level coupled cluster calculations to all-electrons correlated MP2 and density functional theory.
Effect of oxygen in sample carrier gas on laser-induced elemental fractionation in U–Th–Pb zircon dating by laser ablation ICP-MS
Authors: Košler Jan , Jackson Simon E. , Yang Zhaoping , Wirth Richard
Published: February 2014

The presence of oxygen during U–Th–Pb LA ICP-MS analysis of zircon controls the laser-induced elemental fractionation and ICP-MS sensitivity.
Redox-mediated dissolution of paramagnetic nanolids to achieve a smart theranostic system
Authors: Wang Aifei , Guo Mingyi , Wang Nan , Zhao Jianyun , Qi Wenxiu , Muhammad Faheem , Chen Liang , Guo Yingjie , Nguyen Nam-Trung , Zhu Guangshan
Published: February 2014

Redox sensitive dissolution of paramagnetic NPs (Mn3O4) results in a controlled drug release and enhanced magnetic resonance imaging.
Plasmonic Fano resonances in nanohole quadrumers for ultra-sensitive refractive index sensing
Authors: Zhan Yaohui , Lei Dang Yuan , Li Xiaofeng , Maier Stefan A.
Published: February 2014

Plasmonic Fano resonances arising from electromagnetic interactions in metallic nanostructures exhibit spectral characteristics analogous to those from the electron waves in oligomer molecules.
White light emitting diodes with enhanced CCT uniformity and luminous flux using ZrO2 nanoparticles
Authors: Chen Kuo-Ju , Han Hau-Vei , Chen Hsin-Chu , Lin Chien-Chung , Chien Shih-Hsuan , Huang Chung-Ching , Chen Teng-Ming , Shih Min-Hsiung , Kuo Hao-Chung
Published: February 2014

To enhance the uniformity of correlated color temperature (CCT) and luminous flux, we integrated ZrO2 nanoparticles into white light-emitting diodes.
Synthesis of carbazole-based hetero-core-modified porphyrins
Authors: Maeda Chihiro , Masuda Motoki , Yoshioka Naoki
Published: February 2014

Annulation reaction of a 1,1′-(1,3-butadiyne)-8,8′-(2,5-thiophene)-bridged carbazole dimer 10 provided the carbazole-based isophlorines 11a–11c and 12. The oxidation of 12 generated the corresponding 21-selena-23-thiaporphyrin 13.
High refractive index polyvinylsulfide materials prepared by selective radical mono-addition thiol–yne chemistry
Authors: Pötzsch Robert , Stahl Brian C. , Komber Hartmut , Hawker Craig J. , Voit Brigitte I.
Published: February 2014

Linear and hyperbranched polyvinylsulfides with a high refractive index (nD = 1.68–1.76) have been synthesized by selective mono-addition thiol–yne chemistry employing dithiols and di- and trialkynes.
Organoantimony and organobismuth complexes for CO2fixation
Authors: Chen Yi , Qiu Renhua , Xu Xinhua , Au Chak-Tong , Yin Shuang-Feng
Published: February 2014

The utilization of organoantimony and organobismuth complexes in CO2fixation is reviewed in this article.
A catalytic role for methionine revealed by a combination of computation and experiments on phosphite dehydrogenase
Authors: Ranaghan Kara E. , Hung John E. , Bartlett Gail J. , Mooibroek Tiddo J. , Harvey Jeremy N. , Woolfson Derek N. , van der Donk Wilfred A. , Mulholland Adrian J.
Published: February 2014

Novel role for methionine in enzyme catalysis.
Solvent and electrolyte effects on Ni(PR2NR′2)2-catalyzed electrochemical oxidation of hydrogen
Authors: Stolley Ryan M. , Darmon Jonathan M. , Helm Monte L.
Published: February 2014

We report solvent and electrolyte effects on the electrocatalytic oxidation of H2 using Ni(PCy2NR′2)2 (R′ = Bn, tBu) complexes.
A CO2-responsive surface with an amidine-terminated self-assembled monolayer for stimuli-induced selective adsorption
Authors: Li Nan , Thia Larissa , Wang Xin
Published: February 2014

A novel amidine-based bifunctional molecule is synthesized for fabrication of a CO2-responsive surface. Controlling reversible transition of surface charges and wettability in response to stimuli of dissolved CO2 in water, the selective adsorption of hydrophobic/hydrophilic molecules can be easily achieved.
Programmable drug release using bioresponsive mesoporous silica nanoparticles for site-specific oral drug delivery
Authors: Popat Amirali , Jambhrunkar Siddharth , Zhang Jun , Yang Jie , Zhang Honwei , Meka Anand , Yu Chengzhong
Published: February 2014

Programme Me! Programmable mesoporous silica based nanoparticles are produced via a combination of an amino modified surface and a coating of bio-responsive soy protein.
Choosing dyes for cw-STED nanoscopy using self-assembled nanorulers
Authors: Beater Susanne , Holzmeister Phil , Pibiri Enrico , Lalkens Birka , Tinnefeld Philip
Published: February 2014

DNA origami used as a platform to study the bleaching behavior of four commonly used fluorophores in cw-STED nanoscopy.
Quadrupolar, emission-tunable π-expanded 1,4-dihydropyrrolo[3,2-b]pyrroles – synthesis and optical properties
Authors: Janiga Anita , Bednarska Dominika , Thorsted Bjarne , Brewer Jonathan , Gryko Daniel T.
Published: February 2014

A–D–A chromophores containing pyrrolo[3,2-b]pyrrole, as a central donor moiety, display blue, turquoise, yellow and orange fluorescence, depending on the strength of the electron-withdrawing substituent.
Gold-catalyzed tandem Diels–Alder reactions of enynals/enynones with alkenes: generation and trapping of cyclic o-QDMs
Authors: Zhu Shifa , Hu Lang , Jiang Huanfeng
Published: February 2014

Gold-catalyzed generation of the highly reactive cyclic o-QDM species and application in preparation of structurally unique propeller-like molecules.
miR-296/Scribble axis is deregulated in human breast cancer and miR-296 restoration reduces tumour growth in vivo
Authors: Savi Federica , Forno Irene , Faversani Alice , Luciani Andrea , Caldiera Sarah , Gatti Stefano , Foa Paolo , Ricca Dario , Bulfamante Gaetano , Vaira Valentina , Bosari Silvano
Published: February 2014

miR-296-5p is a central regulator of signalling pathways affecting development, stem cell differentiation and cancer. We hypothesized that miR-296-5p is involved in breast cancer onset and progression possibly through regulation of its target SCRIB (Scribble), a polarity protein recently implicated in the acquisition of cancer stem cell traits and in cell motility. We found that miR-296-5p levels were consistently reduced in human breast cancer tissues compared with non-neoplastic mammary parenchyma, and low expression of this miRNA predicted shorter disease-free survival independently of classic clinicopathological parameters. Further, reduced miR-296-5p levels were significantly correlated with an earlier spread of cancer in the overall series and with distant metastases in the subset. In contrast with its regulator, SCRIB was overexpressed and mislocalized in primary breast cancers or locoregional or distant metastatic lesions compared with normal parenchyma. Notably, SCRIB mislocalization was associated with overall survival, metastatic spread and organ tropism in patients with breast cancer. Finally, direct injection of a precursor miR-296-5p into tumours of a breast cancer xenograft model significantly decreased tumour growth. Our results show that the miR-296-5p/SCRIB axis plays a role in breast carcinogenesis and an miR-296-5p-based therapeutic approach hampers breast cancer tumour growth in vivo. Modulation of miR-296-5p may represent a new therapeutic option for patients with breast cancer.