scholarly journals The marine Quaternary in Denmark: a review of new evidence from glacial-interglacial studies

1994 ◽  
Vol 41 ◽  
pp. 203-218
Author(s):  
Karen Luise Knudsen
Keyword(s):  
Late Quaternary ◽  
Total Thickness ◽  
The Core ◽  
Fluvial Deposit ◽  
Late Weichselian ◽  
First Time ◽  
New Evidence

The marine Quaternary of the onshore areas in Denmark is restricted to deposits from the Middle and the Late Quaternary. Selected marine glacial-interglacial paleoenvironmental reconstruct­ions from this sequence are reviewed with special emphasis on relatively recent studies. In addition, an outline of the stratigraphy of the Skagen 3 borehole is given for the first time. The Quaternary at Skagen has a total thickness of almost 200 m. A lower about 7 m thick marine Saalian-Eemian-Early Weichselian sequence (between ea. 185 and 178 m depth in the core) is succeeded by a fluvial deposit (178-132 m) and an apparently continuous extremely thick marine Late Weichselian and Holocene sequence (from 132 m depth to the top of the core).

Aleksey Peshkov as an editor of Samarskaya Gazeta

2020 ◽  
pp. 128-138
Author(s):  
A. S. Bik-Bulatov
Keyword(s):  
Local History ◽  
Organizational Skills ◽  
First Time ◽  
New Evidence ◽  
Insight Into ◽  
Shed Light

The article uses little known letters of M. Gorky, many of which were published for the first time in 1997, as well as findings of Samara-based experts in local history to shed light on the writer’s work as editor-in-chief of the Samarskaya Gazeta newspaper in 1895. The researcher introduces hitherto unstudied reminiscences of the journalist D. Linyov (Dalin) about this period, which reference a letter by Gorky, now lost. The paper details a newly discovered episode of Gorky’s professional biography as a journalist: it concerns his campaign against a Samara ‘she-wolf,’ the madam of a local brothel A. Neucheva. Linyov’s reminiscences turn out to be an important and interesting source, offering an insight into the daily grind of the young editor Gorky, providing new evidence of his excellent organizational skills, and describing his moral and social stance. The author presents his work in the context of a recently initiated broader discussion about the need to map out all Russian periodicals for the period until 1917, as well as all research devoted to individual publications.

scholarly journals On the formation and stability of fermionic dark matter halos in a cosmological framework

2020 ◽  
Author(s):  
Carlos R Argüelles ◽  
Manuel I Díaz ◽  
Andreas Krut ◽  
Rafael Yunis
Keyword(s):  
Black Hole ◽  
Dark Matter ◽  
Space Distribution ◽  
Coarse Grained ◽  
Dark Matter Halos ◽  
The Core ◽  
The Galaxy ◽  
Gravitating Systems ◽  
The Given ◽  
First Time

Abstract The formation and stability of collisionless self-gravitating systems is a long standing problem, which dates back to the work of D. Lynden-Bell on violent relaxation, and extends to the issue of virialization of dark matter (DM) halos. An important prediction of such a relaxation process is that spherical equilibrium states can be described by a Fermi-Dirac phase-space distribution, when the extremization of a coarse-grained entropy is reached. In the case of DM fermions, the most general solution develops a degenerate compact core surrounded by a diluted halo. As shown recently, the latter is able to explain the galaxy rotation curves while the DM core can mimic the central black hole. A yet open problem is whether this kind of astrophysical core-halo configurations can form at all, and if they remain stable within cosmological timescales. We assess these issues by performing a thermodynamic stability analysis in the microcanonical ensemble for solutions with given particle number at halo virialization in a cosmological framework. For the first time we demonstrate that the above core-halo DM profiles are stable (i.e. maxima of entropy) and extremely long lived. We find the existence of a critical point at the onset of instability of the core-halo solutions, where the fermion-core collapses towards a supermassive black hole. For particle masses in the keV range, the core-collapse can only occur for Mvir ≳ E9M⊙ starting at zvir ≈ 10 in the given cosmological framework. Our results prove that DM halos with a core-halo morphology are a very plausible outcome within nonlinear stages of structure formation.

scholarly journals New evidence of arsenic translocation and accumulation in Pteris vittata from real-time imaging using positron-emitting 74As tracer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yi Huang-Takeshi Kohda ◽  
Zhaojie Qian ◽  
Mei-Fang Chien ◽  
Keisuke Miyauchi ◽  
Ginro Endo ◽  
...  
Keyword(s):  
Imaging System ◽  
Pteris Vittata ◽  
Long Distance ◽  
Long Distance Transport ◽  
Hydroponic Cultivation ◽  
Tracer Imaging ◽  
Serial Images ◽  
First Time ◽  
New Evidence ◽  
Hyperaccumulator Plant

AbstractPteris vittata is an arsenic (As) hyperaccumulator plant that accumulates a large amount of As into fronds and rhizomes (around 16,000 mg/kg in both after 16 weeks hydroponic cultivation with 30 mg/L arsenate). However, the sequence of long-distance transport of As in this hyperaccumulator plant is unclear. In this study, we used a positron-emitting tracer imaging system (PETIS) for the first time to obtain noninvasive serial images of As behavior in living plants with positron-emitting 74As-labeled tracer. We found that As kept accumulating in rhizomes as in fronds of P. vittata, whereas As was retained in roots of a non-accumulator plant Arabidopsis thaliana. Autoradiograph results of As distribution in P. vittata showed that with low As exposure, As was predominantly accumulated in young fronds and the midrib and rachis of mature fronds. Under high As exposure, As accumulation shifted from young fronds to mature fronds, especially in the margin of pinna, which resulted in necrotic symptoms, turning the marginal color to gray and then brown. Our results indicated that the function of rhizomes in P. vittata was As accumulation and the regulation of As translocation to the mature fronds to protect the young fronds under high As exposure.

scholarly journals Extended analysis of Xe VII and Xe VIII

2017 ◽  
Vol 95 (9) ◽  
pp. 805-810 ◽  
Author(s):  
M. Raineri ◽  
M. Gallardo ◽  
J. Reyna Almandos ◽  
C.J.B. Pagan ◽  
R. Sarmiento
Keyword(s):  
Light Source ◽  
Energy Levels ◽  
Excited Configuration ◽  
Pulsed Discharge ◽  
Hartree Fock ◽  
The Core ◽  
New Energy ◽  
Extended Analysis ◽  
First Time ◽  
Atomic Parameters

A pulsed discharge light source to study the six and seven times ionized xenon spectra in the 419–4642 Å region was used. A set of 40 transitions of Xe VII and 25 transitions of Xe VIII were classified for the first time. We revised the values for the previously known energy levels and extended the analysis for Xe VII to 10 new energy levels belonging to 5s6d, 5s7s and 5s7p, 4d95s25p even and odd configurations, respectively. Seven new energy levels of the core excited configuration 4d95s5d of Xe VIII are presented. For the prediction of the atomic parameters, energy levels, and transition, relativistic Hartree–Fock calculations were used.

scholarly journals Cyclicity and Connectivity in Nez Perce Relative Clauses

2016 ◽  
Vol 47 (3) ◽  
pp. 427-470 ◽  
Author(s):  
Amy Rose Deal
Keyword(s):  
Word Order ◽  
Relative Clause ◽  
Crucial Role ◽  
Relative Clauses ◽  
Head Noun ◽  
Intermediate Position ◽  
Nez Perce ◽  
The Core ◽  
New Evidence ◽  
Relative Pronouns

This article studies two aspects of movement in relative clauses, focusing on evidence from Nez Perce. First, I argue that relativization involves cyclic Ā-movement, even in monoclausal relatives: the relative operator moves to Spec,CP via an intermediate position in an Ā outer specifier of TP. The core arguments draw on word order, complementizer choice, and a pattern of case attraction for relative pronouns. Ā cyclicity of this type suggests that the TP sister of relative C constitutes a phase—a result whose implications extend to an ill-understood corner of the English that-trace effect. Second, I argue that Nez Perce relativization provides new evidence for an ambiguity thesis for relative clauses, according to which some but not all relatives are derived by head raising. The argument comes from connectivity and anticonnectivity in morphological case. A crucial role is played by a pattern of inverse case attraction, wherein the head noun surfaces in a case determined internal to the relative clause. These new data complement the range of existing arguments concerning head raising, which draw primarily on connectivity effects at the syntax-semantics interface.

Hitherto Unprinted Manuscripts of the Middle English Ipotis

PMLA ◽  
1916 ◽  
Vol 31 (1) ◽  
pp. 114-160
Author(s):  
Josephine D. Sutton
Keyword(s):  
Middle English ◽  
Fourteenth Century ◽  
English Poem ◽  
Relationship Of ◽  
First Time ◽  
New Evidence ◽  
The Relationship

The relationship of the manuscripts of the Middle-English poem Ipotis has been studied in detail by Dr. Hugo Gruber on the basis of the nine mss. known to him. In addition to these there are five others, four of which are printed for the first time below. One of these, unfortunately a fragment, is of the greatest importance, since it carries back the date of the poem at least fifty years. On the basis of the earliest manuscript known to him—ms. Vernon, written about 1385—Gruber assigned the Ipotis to the second half of the fourteenth century. But in the light of the new evidence, the composition of the poem is pushed back to the very beginning of the century.

Measurements and Modelling of Ingress in a New 1.5-Stage Turbine Research Facility

2016 ◽  
Author(s):  
Marios Patinios ◽  
James A. Scobie ◽  
Carl M. Sangan ◽  
J. Michael Owen ◽  
Gary D. Lock
Keyword(s):  
Theoretical Model ◽  
Gas Turbines ◽  
Test Facility ◽  
Radial Clearance ◽  
Operating Life ◽  
The Core ◽  
Wide Range ◽  
Purge Flow ◽  
Engine Components ◽  
First Time

In gas turbines, hot mainstream flow can be ingested into the wheel-space formed between stator and rotor discs as a result of the circumferential pressure asymmetry in the annulus; this ingress can significantly affect the operating life, performance and integrity of highly-stressed, vulnerable engine components. Rim seals, fitted at the periphery of the discs, are used to minimise ingress and therefore reduce the amount of purge flow required to seal the wheel-space and cool the discs. This paper presents experimental results from a new 1.5-stage test facility designed to investigate ingress into the wheel-spaces upstream and downstream of a rotor disc. The fluid-dynamically-scaled rig operates at incompressible flow conditions, far removed from the harsh environment of the engine which is not conducive to experimental measurements. The test facility features interchangeable rim-seal components, offering significant flexibility and expediency in terms of data collection over a wide range of sealing-flow rates. The rig was specifically designed to enable an efficient method of ranking and quantifying the performance of generic and engine-specific seal geometries. The radial variation of CO2 gas concentration, pressure and swirl is measured to explore, for the first time, the flow structure in both the upstream and downstream wheel-spaces. The measurements show that the concentration in the core is equal to that on the stator walls and that both distributions are virtually invariant with radius. These measurements confirm that mixing between ingress and egress is essentially complete immediately after the ingested fluid enters the wheel-space and that the fluid from the boundary-layer on the stator is the source of that in the core. The swirl in the core is shown to determine the radial distribution of pressure in the wheel-space. The performance of a double radial-clearance seal is evaluated in terms of the variation of effectiveness with sealing flow rate for both the upstream and the downstream wheel-spaces and is found to be independent of rotational Reynolds number. A simple theoretical orifice model was fitted to the experimental data showing good agreement between theory and experiment for all cases. This observation is of great significance as it demonstrates that the theoretical model can accurately predict ingress even when it is driven by the complex unsteady pressure field in the annulus upstream and downstream of the rotor. The combination of the theoretical model and the new test rig with its flexibility and capability for detailed measurements provides a powerful tool for the engine rim-seal designer.

THE ANGLO-NORMAN ABBEY CHURCH OF ST ALBANS AND THE AISLELESS NAVE OF ITS CRUCIFORM PREDECESSOR: THE MATERIAL EVIDENCE

2020 ◽  
pp. 1-15
Author(s):  
Jill A Franklin
Keyword(s):  
Conclusive Evidence ◽  
Diagnostic Feature ◽  
Anglo Saxon ◽  
Existing Building ◽  
Cruciform Structure ◽  
Anglo Norman ◽  
First Time ◽  
New Evidence ◽  
Material Evidence ◽  
Solid Walls

Within the Romanesque abbey church at St Albans (Hertfordshire), the vestiges of an earlier structure have been identified for the first time. A hitherto unrecorded feature in the transept, noted by the author in 2017, indicates that, at some stage, the nave lacked its existing arcade piers and instead had solid walls. The implications of this are considerable, calling for a thorough reassessment of the building’s history. For now, it is important to record the primary evidence, so as to make it available for further research. This article aims to provide a concise account of the evidence and a summary of what it might mean. According to the thirteenth-century chronicler, Matthew Paris, the existing church was begun in 1077 and completed in 1088. New evidence indicates, however, that the Romanesque building, with its aisled nave and presbytery, was preceded by a cruciform structure without aisles. The inference is that the existing building contains the fabric of this unaisled predecessor. The obvious conclusion – that it therefore represents the lost Anglo-Saxon abbey church – does not follow without question; as yet, excavation has yielded no conclusive evidence of an earlier church on the site. The critical diagnostic feature presented here for the first time adds substance to the view that the remodelling of unaisled buildings was not uncommon in the post-Conquest period, including large as well as minor churches, as identified long ago at York Minster and, more recently, at Worksop Priory.

scholarly journals The dependence of confinement on the isotope mass in the core and the edge of AUG and JET-ILW H-mode plasmas

2021 ◽  
Author(s):  
Philip Adrian Schneider ◽  
Clemente Angioni ◽  
Lorenzo Frassinetti ◽  
Laszlo Horvath ◽  
Mikhail Maslov ◽  
...  
Keyword(s):  
Wall Jet ◽  
Mass Dependence ◽  
Negative Mass ◽  
The Core ◽  
Engineering Parameters ◽  
Fast Ion ◽  
First Time

Abstract Experiments in ASDEX Upgrade (AUG) and JET with the ITER-like wall (JET-ILW) are performed to separate the pedestal and core contributions to confinement in H-modes with different main ion masses. A strong isotope mass dependence in the pedestal is found which is enhanced at high gas puffing. This is because the ELM type changes when going from D to H for matched engineering parameters, which is likely due to differences in the inter ELM transport with isotope mass. The pedestal can be matched in H and D plasmas by varying only the triangularity and keeping the engineering parameters relevant for core transport the same. With matched pedestals ASTRA/TGLF (Sat1geo) core transport simulations predict the experimental profiles equally well for H and D. These core transport simulations show a negligible negative mass dependence and no gyro-Bohm scaling is observed. However, to match the experimental observations at medium β it is required to take the fast-ion dilution and rotation into account. This is not enough for high β plasmas where for the first time a profile match between H and D plasmas was achieved experimentally. Under these conditions quasilinear modelling with TGLF over predicts the transport in the core of H and D plasmas alike.

Printers to Hendrik Niclaes: Plantin and Augustijn van Hasselt

Quaerendo ◽  
1984 ◽  
Vol 14 (4) ◽  
pp. 247-272 ◽  
Author(s):  
Paul Valkema Blouw
Keyword(s):  
The Other ◽  
Literary Sources ◽  
The Family ◽  
Religious Sect ◽  
Set Up ◽  
Number Of Publications ◽  
First Time ◽  
New Evidence ◽  
Publishing Business

AbstractFrom the chronicles of the Family of Love we know that, besides printers in Deventer and later in Cologne, both Plantin and Augustijn van Hasselt printed for this religious sect. On the basis of this information quite a large number of publications have hitherto been attributed to Plantin, while only one single edition in Latin was reckoned to be the work of Augustijn. An analysis of the typography, however, shows that apart from Hendrik Niclaes's chief work, Den Spegel der Gherechticheyt, Plantin only printed two of his minor writings and that all the other ascriptions to Plantin must be revised in favour of Augustijn van Hasselt. In 1561-2 Augustijn was running a printing shop in the Dutch town of Kampen, specially set up by HN for the purpose of publishing those of his works that had not previously been printed. Plantin, who was partly involved in this enterprise, took the opportunity to have a book printed on this press for his publishing business. The analysis providing the typographical evidence of this collaboration proves for the first time the accuracy of the literary sources as regards Plantin's involvement in the publication of the works of Hendrik Niclaes. In the presentation of the new evidence it was necessary to establish more clearly the date of Plantin's '[1561]' inventory and which roman and German types he owned at what times. The article ends with some notes regarding the end of the 'Bohmbargen' press at Cologne.

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