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Relationships between primary productivity and bottom-water oxygenation off northwest Africa during the last deglaciation

Abstract in UndeterminedThe upwelling region off northwest Africa is one of the most productive regions in the world ocean. This study details the response of surface-and deep-water environments off Mauritania, northwest Africa, to the rapid climate events of the last deglaciation, especially the Bolling-Allerod (15.5-13.5 ka BP) and Younger Dryas (13.5-11.5 ka BP). A high accumulation rate gravit

Multitaper Estimation of the Coherence Spectrum in low SNR

A pseudo coherence estimate using multitapers is presented. The estimate has better localization for sinusoids and is shown to have lower variance for disturbances compared to the usual coherence estimator. This makes it superior in terms of finding coherent frequencies between two sinusoidal signals; even when observed in low SNR. Different sets of multitapers are investigated and the weights of

A Brute-Force Algorithm for Reconstructing a Scene from Two Projections

Is the real problem in finding the relative orientation of two viewpoints the correspondence problem? We argue that this is only one difficulty. Even with known correspondences, popular methods like the eight point algorithm and minimal solvers may break down due to planar scenes or small relative motions. In this paper, we derive a simple, brute-force algorithm which is both robust to outliers an

Prey-type-dependent foraging of young-of-the-year fish in turbid and humic environments

Fish, which are generally visual foragers, experiences reduced reaction distance in visually degraded environments, which has consequences for encounter rates with prey. Small prey is detected at shorter distances than larger prey, and piscivores are therefore predicted to be more strongly affected by visual degradation. In experiments, roach (Rutilus rutilus) were fed two plankton prey types and

An update on pathophysiological mechanisms related to idiopathic oro-facial pain conditions with implications for management

Chronic oro-facial pain conditions such as persistent idiopathic facial pain (PIFP), atypical odontalgia (AO) and burning mouth syndrome (BMS), usually grouped together under the concept of idiopathic oro-facial pain, remain a diagnostic and therapeutic challenge. Lack of understanding of the underlying pathophysiological mechanisms of these pain conditions is one of the important reasons behind t

Modelling and Forecasting Short-Term Interest Rate Volatility: A Semiparametric Approach

This paper employs a semiparametric procedure to estimate the diffusion process of short-term interest rates. The Monte Carlo study shows that the semiparametric approach produces more accurate volatility estimates than models that accommodate asymmetry, levels e¤ect and serial dependence in the conditional variance. Moreover, the semiparametric approach yields robust volatility estimates even if

Dating Components of Human Atherosclerotic Plaques

Rationale: Atherosclerotic plaques that give rise to acute clinical symptoms are typically characterized by degradation of the connective tissue and plaque rupture. Experimental studies have shown that mechanisms to repair vulnerable lesions exist, but the rate of remodeling of human plaque tissue has not been studied. Objective: In the present study, we determined the biological age of different

Writing in Deconstruction vs Speech in Structuralism (Jacques Derrida vs Ferdinand de Saussure)

Speech is already in itself a writing. Any concept that is to name, to stay for the abstract or concrete reality is made up of a mental trace. There is always a sleepy-waiting yet ever present trace at the origin of the representation and the naming of any ontological phenomenon. The trace is itself The apriori ontology – and this is how writing is pre-eminent to the later formal verbalization of

Comparison of Gen-Probe Transcription-Mediated Amplification, Abbott PCR, and Roche PCR Assays for Detection of Wild-Type and Mutant Plasmid Strains of Chlamydia trachomatis in Sweden

The clinical performance of two nucleic acid amplification assays targeting the cryptic plasmid and two assays targeting rRNA molecules in Chlamydia trachomatis was examined. First-catch urine samples from Malmoe, Sweden, were tested for C. trachomatis with the Abbott real-time PCR assay m2000 and an in-house PCR for the new variant strain of C. trachomatis with a deletion in the cryptic plasmid.

'An entirely different culture and an alien race' : Scandinavian Ukrainian encounters on the Canadian prairies, 1910-1940

While contacts between Scandinavia and Kievan Rus’ in recent history have been limited, and Scandinavian, and Scandinavian-Canadian attitudes to Ukrainians were long characterized by an aggressive hostility and racist stereotypes. The image of the “Galician” merged with stereotypes of Russians, which have a long tradition in Scandinavia and Germany. “Galicians” became synonymous with backwardness,