Search results for "Human bone"

Medical Geochemistry

2013

Preface.- How trace element contents in bronchoalveolar lavages can probe the human exposure to inhaled particulates.- Geochemistry and Biochemistry - insights into the fate and transport of Pt-based chemotherapy drugs.- Atmospheric Particulate Matter (PM) in the Middle East: Toxicity, trans-boundary transport and influence of synoptic conditions.- Reaction path modeling: theoretical aspects and applications.- An observation on the composition of urinary calculi: environment influence.- Magnetite minerals in the human brain: what's their role?.- Chemometrics and Medical Geochemistry: A brief tutorial.- Dust, metals and metalloids in the environment: from air to hair.- Metal Geochemistry of …

High-Temperature Sintering of Xenogeneic Bone Substitutes Leads to Increased Multinucleated Giant Cell Formation: In Vivo and Preliminary Clinical Re…

2014

The present preclinical and clinical study assessed the inflammatory response to a high-temperature–treated xenogeneic material (Bego-Oss) and the effects of this material on the occurrence of multinucleated giant cells, implantation bed vascularization, and regenerative potential. After evaluation of the material characteristics via scanning electron microscopy, subcutaneous implantation in CD-1 mice was used to assess the inflammatory response to the material for up to 60 days. The clinical aspects of this study involved the use of human bone specimens 6 months after sinus augmentation. Established histologic and histomorphometric analysis methods were applied. After implantation, the mat…

Ein Beitrag zur metrischen Geschlechtsdiagnose verbrannter und unverbrannter menschlicher Knochenreste?ausgearbeitet an der Pars petrosa ossis tempor…

1981

Die vorliegende Arbeit prasentiert eine neue Methode zur Geschlechtsdiagnose, eine uni-, di- und multivariate Analyse der Pars petrosa, eines Teiles des Schlafenbeines — angeregt durch das haufige Auftreten dieser Struktur in Leichenbranden. Wie der Vergleich der Irrtumswahrscheinlichkeiten zweier Diskriminanzfunktionen zeigt, erweist sich die Einbeziehung aller erhobenen Variablen als vorteilhaft. Schon die Berucksichtigung von nur drei Masen fuhrt zu einer geringeren Fehlerquote bei der Geschlechtszuweisung als bei einigen konventionellen Verfahren. Abschliesend wird das Problem der Schrumpfung fur die Ubertragbarkeit der Methode auf Leichenbrandmaterial erortert, und schrumpfungskorrigie…

Influence of formalin fixation on the biomechanical properties of human diaphyseal bone.

2010

Owing to the lack of fresh human bones, formalin-fixed specimens are frequently used in biomechanical testing. However, formalin fixation is assumed to affect the biomechanical properties of bone. The aim of this study was to compare axial and torsional stiffness and bone mineral density in fresh and embalmed human bones. The subtrochanteric regions of 12 pairs of fresh human femora were randomised into two groups for paired comparison. After bone mineral density measurement, one group was preserved in 4% formalin. After 6 weeks, bone mineral density was remeasured and each specimen underwent axial and torsional loading. The formalin group showed significant higher stiffness values for tors…

LONG-TERM ENGRAFTMENT AND SAFETY OF HUMAN BONE MARROW DERIVED CD133+ CELLS IN A RAT MODEL OF ASHERMAN’S SYNDROME

2020

CAD modelling of the human femur taking into account the structure of the bone

2021

The use of 3D models of the human bone system has great utility in the biomechanical study, due to the fact that these structures cannot be analyzed or tested in vivo. Within this paper, taking into consideration its real bone structure, the human femur CAD modelling is established. Firstly, a preliminary anatomical study is done, in order to highlight the fact that the thigh bone is a heterogeneous structure, consisting of several entities with different mechanical characteristics. The modelling starts from a homogenous 3D model of the femur, from which, every single separate entity is designed and finally they are assembled within a single product assembly. Therefore, the final result ens…

Oxygen isotope analysis of human bone phosphate evidences weaning age in archaeological populations

2015

Here we report bone phosphate oxygen (δ(18)Op) values from perinates/neonates and infants ( 50 years), have δ(18)Op values consistent with the consumption of local modern drinking water. The implications of this study for the reconstruction of weaning practices in archaeological populations are discussed, including variations observed with bone δ(15)Ncoll and δ(18)Op co-analysis and the influence of culturally-modified drinking water and seasonality. The use of this method to explore human mobility and palaeoclimatic conditions are also discussed with reference to the data presented.

Źródła archeologiczne z cmentarzysk jako narzędzie badawcze do poznania stanu zdrowia ludzi okresu średniowiecza, na podstawie stanowiska nr 1 w Bycz…

2019

Research on early medieval and medieval archaeoiogical and anthropological cemeteries is not the easiest. Archaeoiogical and anthropological research in Byczyna showed how valuable e data from cemetery research is, how much we can leam about the community living in medieval cities. Analyzing bone material at the preliminary stage of research, it can beseen that the health condition of the inhabitants of medieval Byczyna was not good. Almost half of the examined skeletons have traces of various diseases, especially degenerative diseases and injuries. There were also cases of conditions that indicate that the diet of the dead did not have basie nutrients.

Cell-cycle control in cell-biomaterial interactions

2000

Current biocompatibility testing involves the demonstration of cell proliferation, which is usually interpreted as a sign of positive biocompatibility when the materials sustain cell proliferation. As the field of biomaterials research is rapidly moving toward tissue-engineered devices and hybrid organs, control of cell function has become a main topic. Cell function, which involves specific differentiation pathways, cannot be separated from cell-cycle control. The study of cell-cycle control is an important extension of routine proliferation assays and has extensive roots in developmental and tumor biology. We studied the expression of the tumour suppressor gene p53 and the proliferation-a…

“I Like to Keep my Archaeology Dead”. Alienation and Othering of the Past as an Ethical Problem

2019

As archaeologists, we have to deal with the dead, and as David Clarke once said, we like to keep our archaeology dead. From an epistemological perspective, alienation from the dead seems almost inevitable; otherwise, we would only project today’s conditions onto the past. Therefore, the past must be, and must remain, a foreign country. These alienating processes have ethical implications, however, especially when it comes to the study of human remains. In this article, we analyze the structures within the scientific discipline of archaeology that normalize practices, such as the labeling of human bone material during excavations and the object-like display of skeletons in museums. We argue …