12 research outputs found
Pathology of the Mandibles and Maxillae from Archaeological Context: Discrepancy between Diagnoses Obtained by External Inspection and Radiological Analysis
The goal of this research was to investigate the type and frequency of mandibular and maxillary lesions that could not
be diagnosed relying solely on external macroscopic observation. The sample comprised of 189 maxillae and 182 mandibles
from a late-medieval graveyard. The material was examined both macroscopically and radiologically, using traditional
X-ray facilities, orthopantomographs, and a dental X-ray unit. The total number of lesions detected by radiography
was 103, with the majority of them (90.3%) showing no external macroscopic features. The most frequently detected
diseases were periodontal inflammatory lesions (64.1%), followed by developmental anomalies of the teeth (22.3%). The
results of this study revealed that radiography allowed the detection of many underlying pathological lesions of the jaws
that otherwise were not detected through external macroscopic examination
Dental Status of Victims from Batajnica’s Mass Graves
The aim of this paper is to present the post mortem dental evidence and dental health of the victims interred during 1999 in five grave pits at Batajnica near Belgrade. The investigated sample comprised 32 individuals with only maxillae preserved, 80 with mandible, and 260 individuals with both jaws. We have found high degree of enamel hypoplasia (25.89%), frequent signs of the severe forms of periodontal disease (18.55%), very high percent of antemortem tooth loss (31.48%), and evidence of edentate jaws in an early age of individuals. Amalgam was predominant material for tooth fillings; implants and non-metal ceramic crowns were not found, and three quaters of edentate individuals were found with full prostetic dentures. Despite the detailed postmortem dental analysis, antemortem dental charts were not collected. These individuals were identified by other forensic methods
Optical Aspect of Deformation Analysis in the Bone-Denture Complex
The aim of this study was to register and measure any deformation of mandible models under load. The method for full field measurement of strain is done by using the ARAMIS three-dimensional image correlation system. The system uses two digital cameras that provide a synchronized stereo view of the specimen and the results show the complete strain field during the tests. The biggest deformation values were just under the working force of the biggest intensity 500 N, and for the region of the lower second premolar the deformation is 625 mm. The following study is presented that highlight the use of stereometric measuring system for modern research. It is shown that this measuring methodology can capture the trends of the experiments
Acute effects of nandrolone decanoate on oxidative stress in isolated rat heart
Abuse of anabolic-androgenic steroids (AAS) produces side effects in different tissues, with oxidative stress linked to their pathophysiology, being involved in fibrosis, cellular proliferation, and tumorigenesis. The aim of this study was to examine the acute effects of nandrolone decanoate (ND) on oxidative stress in isolated rat heart. The hearts of male Wistar albino were excised and perfused according to the Langendorff technique at gradually increasing coronary perfusion pressures (40-120 cm H2O). The hearts were perfused with ND at doses of 1, 10 and 100 μM. Oxidative stress markers, including the index of lipid peroxidation (thiobarbituric acid reactive substances (TBARS)), nitric oxide (nitrites; NO2-), the superoxide anion radical (O2-) and hydrogen peroxide (H2O2) were measured in the coronary venous effluent. Our results showed that acute effects of ND do not promote the production of reactive oxygen species (ROS). Our finding pointed out that the highest concentration of ND may even possess some anti-oxidative potential, which should be examined further
ECONOMY "SMART BUILDINGS" HOUSING
In terms of ensuring national
security and the security of energy supply and
energy sources, such as liquid fuels and gas, as well
as energy independence from energy imports and
energy, the focus of our strategy to shift towards
renewable energy sources. In fact, whether a state
of more or less energy-independent, to a large
extent can be determined by the percentage
participation renewable energy in meeting the total
energy requirements. So, the consumption of
renewable energy source (solar energy, wind
energy, geothermal energy, hydropower and small
watercourses, biomass and biogas) is put in relation
with the amount of power and energy which are
imported from foreign countries (liquid fuels and
gas). Based on data published by the European
statistics agency, in developed European countries
is the fact that renewable energy sources accounted
for 10-12% of the total energy balance of individual
countries. Here, the situation is very worrying,
given that renewable energy resources still account
for only 1% in the energy balance, which is
negligible and intolerable little. On the other hand,
environmental awareness that is constantly
improving and developing required to behave and
act in accordance with the capabilities and
resources of nature and the natural environment. As
the largest building and construction consume
energy and also the biggest polluters of the
environment, point to the request to change the
method of construction and thus to change the way
of life on the planet. Poor and inadequate access to
the building and construction industry certainly is
recognized as the most important factor in global
warming. The progress of civilization, especially in
terms of technical and technological innovation
brings the design and construction of facilities that
will be compatible with the environment. For
designers and investors is to develop, design and
build "green"
Side asymmetry in nasal resistance correlate with nasal obstruction severity in patients with septal deformities: Computational fluid dynamics study
Objectives The objective of this study was to investigate the relationship between side asymmetry in nasal resistance (NR) and severity of the nasal airway obstruction (NAO) in patients with different types of nasal septal deformity (NSD). Design Computational fluid dynamics (CFD) study. Setting The study was conducted in a tertiary medical centre. Participants The study included 232 patients, who were referred to the CT examination of the paranasal sinuses. Exclusion criteria were sinonasal and respiratory diseases that may interfere with the nasal obstruction. The presence and the type of NSD were recorded according to the Mladina's classification. Main outcome measures The presence and severity of NAO in each patient were assessed by NOSE questionnaire. Eight computational models of the nasal cavity were created from CT scans. Models represented seven Mladina's NSD types and a straight septum of a symptomless patient. CFD calculated airflow partitioning and NR for each nasal passage. Side differences in NR were calculated by the equation increment NR = NRleft - NRright. The relationship between NOSE scores, airflow partitioning and side differences in NR was explored using Spearman's correlation analysis. Results Mladina's types of NSD showed differences in airflow partitioning and the degree of side asymmetry in NR. A significant positive correlation was detected between side differences in NR and NOSE scores (R = .762, P = .028). A significant negative correlation was found between the per cent of unilateral airflow and NR (R = -.524, P = .037). Conclusions Our results demonstrated that side asymmetry in NR could explain differences in NAO severity related to the NSD type