56 research outputs found
Caries correction factors applied to a Punic (6th - 2nd BC) population from Ibiza (Spain)
Caries correction factors were applied to a Punic (6th-2nd century BC) rural sample from the island of Ibiza (Spain). Data obtained on dental caries and ante-mortem tooth loss provided a corrected rate of 12.8% of teeth with caries. This result, in conjunction with other sources of information such as stable isotope analysis and documentary evidence, indicated a diet based on terrestrial protein (mainly carbohydrates) and a low component of marine protein. The paper suggests further research avenues and promotes the use of caries correction factors in archaeological populations
Physical anthropology in Europe and beyond
Methodologies and legislative frameworks regarding the excavation, retrieval, analysis, curation and potential reburial of human skeletal remains different throughout Europe. As work forces within Europe and beyond have become increasingly mobile and international research collaborations are steadily increasing, the need for a more comprehensive understanding of different national research traditions, methodologies and legislative structures within the academic and commercial sector of physical anthropology has arisen. Establishing how human osteoarchaeology is practiced and dealt with throughout Europe and beyond will promote sharing knowledge between countries and form the basis for pan-European exchanges and discussions on the best practice. The current paper focuses on an ongoing project entitled ‘Physical Anthropology and Legislation: European Perspectives and Beyond’ and provides insight into some of the results obtained so far
Redefining forensic anthropology in the 21st century and its role in mass fatality investigations
Forensic anthropology is a dynamic field, with its definition having to reshape itself and expand continuously. The challenges faced as well as its potential have grown in synergy with other areas in forensic science. In academia, as well as in practice, the discipline has seen much specialisation in different areas. In particular in recent years, the importance of the forensic anthropologist has led to an increase volume of casework for these scientists, and an important role in disaster victim identification worldwide. This paper sees the need for a revised definition which reflects the nature of the work, both with the living as well as with the dead, in individual domestic cases or international human rights’ investigations. A review of the work undertaken by forensic anthropologists is provided with special emphasis on mass fatality incidents. This paper also explores the discipline’s contribution to DNA analysis and positive identification. It is important to highlight the forensic anthropologists’ role and their potential in any deployment of a National or International Disaster Victim Identification team
An Investigation of Red Fox (Vulpes vulpes) and Eurasian Badger (Meles meles) Scavenging, Scattering, and Removal of Deer Remains: Forensic Implications and Applications
Within northwest Europe, especially the United Kingdom, the red fox (Vulpes vulpes) and the Eurasian Badger (Meles meles) are the largest wild scavengers capable of modifying a set of remains through scavenging. Knowledge of region-specific and species-typical scavenging behaviors of scavengers within the crime scene area and surroundings can aid in more efficient and accurate interpretations. The scavenging behaviors of captive and wild foxes and badgers were recorded and compared through actualistic methods and direct observation. The scavenging by wild foxes and badgers of surface-deposited baits and whole deer (Cervus nippon; Capreolus capreolus) in a woodland was observed and analyzed. Wild foxes were found to scavenge deer more frequently than badgers. The scavenging of deer remains by foxes was also compared with forensic cases. The scavenging pattern and recovery distances of deer and human remains scavenged by foxes were similar but were potentially affected by the condition and deposition of a body, and the presence of clothing
The effect of diet and sociopolitical change on physiological stress and behavior in late Roman‐Early Byzantine (300–700 AD) and Islamic (902–1,235 AD) populations from Ibiza, Spain
Objectives
This study evaluated chronological changes in physiological stress and levels of habitual loading of Ibizan
populations from the Late Roman-Early Byzantine to the Islamic period (300-1235 AD) using measures of body size
and bone cross-sectional properties. It also explored the effect of diet, modeled using stable isotopes, on
physiological stress levels and behavior.
Materials and Methods
American Journal of Physical Anthropology, Volume 172, Issue 2, June 2020 pp. 189-213
DOI:10.1002/ajpa.24062
Published by Wiley. This is the Author Accepted Manuscript issued with: Creative Commons Attribution Non-Commercial License (CC:BY:NC 4.0).
The final published version (version of record) is available online at DOI:10.1002/ajpa.24062. Please refer to any applicable publisher terms of use.
2
The sample comprised individuals from three archaeological populations: Urban Late Roman- Early Byzantine
(LREB) (300-700 AD), Medieval Urban Islamic (902-1235 AD), and Rural Islamic. Bone lengths, femoral head
dimensions, and diaphyseal products and circumferences were compared to assess differences in body size and
habitual loading in 222 adult individuals. Ordinary least squares regression evaluated the correlations between these
measures and carbon (δ13C) and nitrogen (δ15N) stable isotope ratios in 115 individuals for whom both isotope
values and osteological measures are available.
Results
The Rural Islamic group had shorter stature and reduced lower limb cross-sectional properties compared to the two
urban groups. In both LREB and Islamic groups, body mass and femur length was positively correlated with δ13C
values, and δ15N shows a positive correlation with left humerus shape in the LREB Urban sample.
Conclusions
The low stature and cross-sectional properties of the Rural Islamic group are most likely an indicator of greater
physiological stress, potentially due to poorer diet. Positive correlations between measures of body size and δ13C
values further suggest that greater access to C4 resources improved diet quality. Alternatively, this relationship could
indicate greater body size among migrants from areas where individuals consumed more C4 resources
A review of elliptical and disc galaxy structure, and modern scaling laws
A century ago, in 1911 and 1913, Plummer and then Reynolds introduced their
models to describe the radial distribution of stars in `nebulae'. This article
reviews the progress since then, providing both an historical perspective and a
contemporary review of the stellar structure of bulges, discs and elliptical
galaxies. The quantification of galaxy nuclei, such as central mass deficits
and excess nuclear light, plus the structure of dark matter halos and cD galaxy
envelopes, are discussed. Issues pertaining to spiral galaxies including dust,
bulge-to-disc ratios, bulgeless galaxies, bars and the identification of
pseudobulges are also reviewed. An array of modern scaling relations involving
sizes, luminosities, surface brightnesses and stellar concentrations are
presented, many of which are shown to be curved. These 'redshift zero'
relations not only quantify the behavior and nature of galaxies in the Universe
today, but are the modern benchmark for evolutionary studies of galaxies,
whether based on observations, N-body-simulations or semi-analytical modelling.
For example, it is shown that some of the recently discovered compact
elliptical galaxies at 1.5 < z < 2.5 may be the bulges of modern disc galaxies.Comment: Condensed version (due to Contract) of an invited review article to
appear in "Planets, Stars and Stellar
Systems"(www.springer.com/astronomy/book/978-90-481-8818-5). 500+ references
incl. many somewhat forgotten, pioneer papers. Original submission to
Springer: 07-June-201
Biology of moderately halophilic aerobic bacteria
The moderately halophilic heterotrophic aerobic bacteria form a diverse group of microorganisms. The property of halophilism is widespread within the bacterial domain. Bacterial halophiles are abundant in environments such as salt lakes, saline soils, and salted food products. Most species keep their intracellular ionic concentrations at low levels while synthesizing or accumulating organic solutes to provide osmotic equilibrium of the cytoplasm with the surrounding medium. Complex mechanisms of adjustment of the intracellular environments and the properties of the cytoplasmic membrane enable rapid adaptation to changes in the salt concentration of the environment. Approaches to the study of genetic processes have recently been developed for several moderate halophiles, opening the way toward an understanding of haloadaptation at the molecular level. The new information obtained is also expected to contribute to the development of novel biotechnological uses for these organisms
The James Webb Space Telescope Mission
Twenty-six years ago a small committee report, building on earlier studies,
expounded a compelling and poetic vision for the future of astronomy, calling
for an infrared-optimized space telescope with an aperture of at least .
With the support of their governments in the US, Europe, and Canada, 20,000
people realized that vision as the James Webb Space Telescope. A
generation of astronomers will celebrate their accomplishments for the life of
the mission, potentially as long as 20 years, and beyond. This report and the
scientific discoveries that follow are extended thank-you notes to the 20,000
team members. The telescope is working perfectly, with much better image
quality than expected. In this and accompanying papers, we give a brief
history, describe the observatory, outline its objectives and current observing
program, and discuss the inventions and people who made it possible. We cite
detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space
Telescope Overview, 29 pages, 4 figure
Genetic sharing and heritability of paediatric age of onset autoimmune diseases
Autoimmune diseases (AIDs) are polygenic diseases affecting 7–10 % of the population in the Western Hemisphere with few effective therapies. Here, we quantify the heritability of paediatric AIDs (pAIDs)
Whole-genome sequencing reveals host factors underlying critical COVID-19
Critical COVID-19 is caused by immune-mediated inflammatory lung injury. Host genetic variation influences the development of illness requiring critical care1 or hospitalization2,3,4 after infection with SARS-CoV-2. The GenOMICC (Genetics of Mortality in Critical Care) study enables the comparison of genomes from individuals who are critically ill with those of population controls to find underlying disease mechanisms. Here we use whole-genome sequencing in 7,491 critically ill individuals compared with 48,400 controls to discover and replicate 23 independent variants that significantly predispose to critical COVID-19. We identify 16 new independent associations, including variants within genes that are involved in interferon signalling (IL10RB and PLSCR1), leucocyte differentiation (BCL11A) and blood-type antigen secretor status (FUT2). Using transcriptome-wide association and colocalization to infer the effect of gene expression on disease severity, we find evidence that implicates multiple genes—including reduced expression of a membrane flippase (ATP11A), and increased expression of a mucin (MUC1)—in critical disease. Mendelian randomization provides evidence in support of causal roles for myeloid cell adhesion molecules (SELE, ICAM5 and CD209) and the coagulation factor F8, all of which are potentially druggable targets. Our results are broadly consistent with a multi-component model of COVID-19 pathophysiology, in which at least two distinct mechanisms can predispose to life-threatening disease: failure to control viral replication; or an enhanced tendency towards pulmonary inflammation and intravascular coagulation. We show that comparison between cases of critical illness and population controls is highly efficient for the detection of therapeutically relevant mechanisms of disease
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