scholarly journals U/Th and 14C Crossdating of Parietal Calcite Deposits: Application to Nerja Cave (Andalusia, Spain) and Future Perspectives

Radiocarbon ◽  
2017 ◽  
Vol 59 (6) ◽  
pp. 1955-1967 ◽  
Author(s):  
Hélène Valladas ◽  
Edwige Pons-Branchu ◽  
Jean Pascal Dumoulin ◽  
Anita Quiles ◽  
José L Sanchidrián ◽  
...  

Abstract14C and U/Th methods were used to date three thin carbonate layers deposited on decorated walls of Nerja Cave (Malaga, southern Spain) in order to constrain the age of the parietal non-figurative marks situated under these carbonate layers. Modern formations were also dated to estimate the detritic contribution for the U/Th method and the dead carbon proportion for 14C dating. We sampled two locations with ocher painting marks. In one case (mark 1), the good agreement between the ages obtained by the two methods suggests that the sample was not subjected to post-deposition alteration and that the results are reliable. In the other case (mark 2), the age discrepancy between the two methods reached 30,000 yr, indicating that geochemical alteration had affected the sample and that one or both results were inaccurate. The ages for mark 1 indicate that this type of non-figurative representation is older than 25,000 cal BP and that it can be associated with the oldest attested Paleolithic occupation of Nerja Cave.

1994 ◽  
Vol 37 (2) ◽  
Author(s):  
M. Broms ◽  
B. Lundhorg

In the context of the COST 238, PRIME project, two campaigns of oblique soundings with the Chirpsounder receiver at Linkoping, Sweden were made in parallel with vertical sounding campaigns. One campaign was made in June, 1992, when transmissions from Southern Spain were monitored, the other in December, 1992 when a transmitter at Chelveston, U.K, was monitored. The scaled values of F2MOF, 2-hop F2MOF and LOF give information on the variation of these parameters on short time scales and from day to day. High correlations between 2-hop F2MOF and F2MOF are found. Good agreement was found between the 2-hop MOF and MUF(1400)F2 calculated from vertical soundings at St. Peter Ording, Germany.


Author(s):  
Christine M. Korsgaard

According to the marginal cases argument, there is no property that might justify making a moral difference between human beings and the other animals that is both uniquely and universally human. It is therefore “speciesist” to treat human beings differently just because we are human beings. While not challenging the conclusion, this chapter argues that the marginal cases argument is metaphysically misguided. It ignores the differences between a life stage and a kind, and between lacking a property and having it in a defective form. The chapter then argues for a view of moral standing that attributes it to the subject of a life conceived as an atemporal being, and shows how this view can resolve some familiar puzzles such as how death can be a loss to the person who has died, how we can wrong the dead, the “procreation asymmetry,” and the “non-identity problem.”


Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 499
Author(s):  
Caroline Bonazza ◽  
Jiao Zhu ◽  
Roger Hasler ◽  
Rosa Mastrogiacomo ◽  
Paolo Pelosi ◽  
...  

An electronic biosensor for odors was assembled by immobilizing the silk moth Bombyx mori pheromone binding protein (BmorPBP1) on a reduced graphene oxide surface of a field-effect transistor. At physiological pH, the sensor detects the B. mori pheromones, bombykol and bombykal, with good affinity and specificity. Among the other odorants tested, only eugenol elicited a strong signal, while terpenoids and other odorants (linalool, geraniol, isoamyl acetate, and 2-isobutyl-3-methoxypyrazine) produced only very weak responses. Parallel binding assays were performed with the same protein and the same ligands, using the common fluorescence approach adopted for similar proteins. The results are in good agreement with the sensor’s responses: bombykol and bombykal, together with eugenol, proved to be strong ligands, while the other compounds showed only poor affinity. When tested at pH 4, the protein failed to bind bombykol both in solution and when immobilized on the sensor. This result further indicates that the BmorPBP1 retains its full activity when immobilized on a surface, including the conformational change observed in acidic conditions. The good agreement between fluorescence assays and sensor responses suggests that ligand-binding assays in solution can be used to screen mutants of a binding protein when selecting the best form to be immobilized on a biosensor.


Clay Minerals ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 453-465 ◽  
Author(s):  
I. Gonzalez ◽  
E. Galan ◽  
A. Miras ◽  
P. Aparicio

AbstractAn attempt has been made to assess new potential applications for the Bailén clays, traditionally used for manufacturing bricks, based on mineralogical, chemical, particle size, plasticity and firing results. Raw materials and mixtures used by the local factory were selected and tested with the addition of some diatomite, feldspar or kaolin. Based on their properties, clay materials from Bailén might be suitable for making porous red wall tiles, clinker, vitrified red floor tiles and porous light-coloured wall tiles by pressing; the first could be manufactured from the raw materials and mixtures currently used by the local manufactures. On the other hand, stoneware shaped by extrusion, such as perforated bricks, facing bricks and roofing tiles, can be also manufactured from the mixtures used at the factory if they contain 20-25% carbonate and small amounts of iron oxides; lightweight bricks require black and yellow clays with diatomite.


2013 ◽  
Vol 2013 (1) ◽  
Author(s):  
George Pattison

AbstractNoting Heidegger’s critique of Kierkegaard’s way of relating time and eternity, the paper offers an alternative reading of Kierkegaard that suggests Heidegger has overlooked crucial elements in the Kierkegaardian account. Gabriel Marcel and Sharon Krishek are used to counter Heidegger’s minimizing of the deaths of others and to show how the deaths of others may become integral to our sense of self. This prepares the way for revisiting Kierkegaard’s discourse on the work of love in remembering the dead. Against the criticism that this reveals the absence of the other in Kierkegaardian love, the paper argues that, on the contrary, it shows how Kierkegaard conceives the self as inseparable from the core relationships of love that, despite of death, constitute it as the self that it is.


2004 ◽  
Vol 18 (09) ◽  
pp. 1351-1368
Author(s):  
ANDREI DOLOCAN ◽  
VOICU OCTAVIAN DOLOCAN ◽  
VOICU DOLOCAN

Using a new Hamiltonian of interaction we have calculated the cohesive energy in three-dimensional structures. We have found the news dependences of this energy on the distance between the atoms. The obtained results are in a good agreement with experimental data in ionic, covalent and noble gases crystals. The coupling constant γ between the interacting field and the atoms is somewhat smaller than unity in ionic crystals and is some larger than unity in covalent and noble gases crystals. The formulae found by us are general and may be applied, also, to the other types of interactions, for example, gravitational interactions.


Perception ◽  
1996 ◽  
Vol 25 (12) ◽  
pp. 1419-1436 ◽  
Author(s):  
Paul Locher ◽  
Sharon Gray ◽  
Calvin Nodine

Two experiments were performed to examine how the subjective balance of a painting is created by its structural features and to determine if balance influences the way people look at paintings. Stimuli consisted of sixteen reproductions of twentieth-century paintings varying in artistic style and a reconstructed less-balanced version of each. Participants in experiment 1 determined the location of the balance center of each composition, assigned ‘weights’ to the pictorial features which contributed to the location of the balance center, and rated the picture for balance. It was found that design and museum professionals and individuals untrained in the visual arts were in good agreement as to the structural framework underlying the balance organization of a painting. For all participants, disruption of the balanced organizations of the original compositions led to reliable shifts in the location of the perceived balance centers of the originals compared with their less-balanced perturbations. Additionally, it was observed that particular features as such were not the origin of the balance phenomenon; rather, judgments concerning the balance structure and its center were dependent on the global integration of information across a wide area of the display field, but especially from its central region. Last, the subtle changes in balance structure between versions resulted in lower ratings of balance being assigned to the less-balanced perturbations by the design professionals only; the other two participant groups evaluated overall balance of the versions as comparable. In experiment 2, eye movements of a different group of untrained individuals were recorded as they performed similar tasks on the art stimuli. It was found that disruption of the balance structure of the original representational but not abstract compositions resulted in different regions of the original and perturbed versions being visually explored. Findings of both experiments are related to theoretical notions of balance.


PMLA ◽  
1937 ◽  
Vol 52 (4) ◽  
pp. 1183-1190
Author(s):  
George W. Whiting

To the student of writing and literature few inquiries are more interesting and valuable than that into an author's practices in revising his own work. To observe the various stages in the evolution of the final version, to note carefully an artist at his work of pruning the dead wood, adding fresh material, smoothing away harsh phrases, selecting just words, and letting light into obscure places—to do this is to come somewhat nearer to an understanding of what in spite of all analysis will remain essentially a mystery. Especially fascinating and instructive is the study of Conrad's revision, for here one sees a supreme artist at work. In his vigorous hewing and rebuilding there is conclusive proof of the artist's untiring industry and consummate skill. Conrad's revision of Nostromo is of particular interest, for this novel occupies a critical place in the evolution of Conrad's prose. Mr. Richard Curie has justly characterized the change that came over Conrad's prose—a change perceptible in the “Amy Foster” of Typhoon and fully marked in from Under Western Eyes onward. This evolution has smoothed away the cadence, has concentrated the manner, has toned down the style of Conrad's former exuberance. At first glance the later and the earlier Conrad appear two totally different men. The unruly splendor of the one has given way to the subtle and elastic suavity of the other … His earlier prose is sometimes uncertain, sometimes exaggerated, but his later prose has the uniform temper of absolute mastery.


2021 ◽  
Vol 37 (2) ◽  
pp. 117-134
Author(s):  
Angelika Moskal

Abstract: The shaman figure is most often associated with primitive communities, inhabiting, among others Siberia. The shaman plays one of the most important roles in them - he is an intermediary between the world of people and the world of spirits. Responds to, among others for the safe passage of souls to the other side and protects her from evil spirits. However, is there room for representatives of this institution in contemporary Polish popular literature? How would they find themselves in the 21st century? The article aims to show the interpretation of the shaman on the example of Ida Brzezińska, the heroine of the books of Martyna Raduchowska. I intend to introduce the role and functions of the „shaman from the dead”, juxtaposing the way Ida works (including reading sleepy margins from a rather unusual dream catcher, carrying out souls and the consequences that await in the event of failure or making contact with the dead) with the methods described by scholars shamans. The purpose of the work is to show how much Raduchowska tried to adapt shamanism in her work by modernizing it, and how many elements she added from herself to make the story more attractive.


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