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The study was realised on myocardium samples prelevated during ischemia and after reperfusion by using the cardioplegic solution in standard composition and with phosphocreatine at 25 patients during surgical correction of cardiac diseases. The following parameters of mitochondrial respiration were analysed: (1) maximum respiratory rate, (2) acceptor control of respiration - maximal and basic ratio...
In the Energy Store and Release (ESR) prosthetic feet the energy is stored in spring mechanism during the initial contact phase and will be released during push-off phase. The ESR mechanism is modified during the amputee's gait by the influence of the cover and the shoes' sole's materials characteristics. Other variables could interfere, such as: body weight and walking speed.
The experiment used a patented psycho-verbal stimulation interface to study the utility of cognitive visual N400 evoked potential in detecting the reading process. The acquisition was performed in Oz, Pz, Cz, Fz leads, on a group of 50 normal persons, at three type of list contained each 500 paragraphic modified words: unreadable non-words, readable non-words and pseudowords. Grand AVG function was...
Titanium alloys are widely used in implantology. Electrochemical deposition of hydroxyapatite (HA) on Ti6Al4V was achieved through a two-step process, via monetite. The first step involves the electrochemical deposition of Monetite (CaHPO4) and in the second step it is chemically transformed into hydroxyapatite (Ca10 (PO4) 6 (OH) 2). The atomic proportion Ca:P is characterizing a monitite structure...
The relationship between periodontal disease and osteoporosis is well known; a method of photo-activation disinfection (PAD) was proposed. The purpose of the study was to assess the effects of LED PAD and tolonium chloride on periodontal clinical parameters in chronic periodontitis and osteoporosis patients. We recruited 66 patients with chronic periodontitis and osteoporosis, divided in two groups...
The mechanical energy exchanges of normal subjects during walking have been investigated. Two groups of subjects including healthy children and healthy adults participated in this study. Kinematic data have been captured by a motion analysis system composed of 8 TV-cameras with an acquisition frequency of 50 Hz and retro-reflective markers positioned on main reference points of the body. Based on...
The experiment purposes to assess which type of mental strategy in training lexical abilities has the best reaction time improvement. Three groups of 16 persons each (equal men-women), equalized distributed as lexical performance after a pre-evaluated test were trained three days each using one of three type of methods - icon-nonlexical, graphemic-letter and semantic-icon-lexical mixed. We assess...
In this paper we used a gel based on calcium acetate / phosphoric acid in which the molar ratio Ca: P was 1.69 in order to obtain a hydroxyapatite layer on a metallic substrate of an implantable titanium alloy. Thin layers have good homogeneity and adhesion to the substrate and defects in the coating were investigated by scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDAX).
This paper presents experimental bending-rotation tests regarding the fatigue life of superelastic NiTi wires. The rotating-bending fatigue experimental tests were done on three types of Nitinol wires characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The results showed that the number of cycles varies with the diameter and chemical composition of the...
The paper presents initial experiments on a basic forward engineered childbirth simulator. Polygonal models of a fetal skull and bony maternal pelvis were created. A simple physics model was implemented to model the mechanical contact interaction between the fetal head and the maternal pelvis. A series of experiments were run to establish whether this basic model would display the cardinal movements...
Texture features are very popular and widely-used in many image processing and computer vision applications. Mathematical morphology offers a series of tools for texture description, like granulometry and morphological covariance. However, there are few methods for color texture description through morphological approaches, due to the issues arisen at the extension of the morphological operations...
The use of digital image processing as a medical diagnosis aid is now well established, being slowly but successfully integrated directly within the medical imaging devices. The traditional use of digital image processing as a post-imaging technique is still interesting, especially for new approaches to classical applications or for pioneering new ones. Our studies in the field of near automatic interpretation...
Chronic obstructive pulmonary disease (COPD) currently occupies sixth place in the list of morbidity causes in the world adult population and is catching third in 2020; smoking is the most important cause. COPD mortality reaches 200–300%ooo for the age group 45–64 years, 6% of deaths in men and 4% of deaths in women. Mortality from the disease is increasing at 3rd place in 2020, the disease having...
Smoking is a major public health problem with medical, social, and financial implications. We conducted a retrospective analysis of data resulting from enrollment and completion of a smoking cessation program of a number of 399 subjects of both gender, who presented consecutively in 2009 to the Smoking Cessation Counseling Medical Office of the Iasi Clinical Rehabilitation Hospital. The treatment...
The growth of micro-organisms on a culture medium for the biosynthesis of products is the process of interaction of the individual cell and culture medium. Applying the laws of thermodynamics and mass transfer and energy demonstrates that culture of microorganisms is influenced directly the temperature, pH and concentration of substrate. Implementation of monitoring and management favorable methods...
Patients with acromegaly are reported to have a 1.6 to 3.3 fold increase in the mortality rate and a 10-year reduction in their lifespan. Sleep apnea is considered the most common respiratory complication in acromegaly. The aim of our study was to evaluate the severity of sleep apnea, and its particularities, in patients with acromegaly in Cluj-Napoca, Romania. We investigated 35 patients with acromegaly,...
Nowadays the main problems of ultrasound imaging (USI) are the quality of the image (in terms of signal-to-noise ratio and resolution) and the duration of data acquisition. For solving these challenges, multiple methods were studied during the last decade. It was shown that through the transmission of coded excitation pulses to the ultrasound probe, we can obtain an enhancement of signal-to-noise...
Emerging x-ray breast imaging applications require the use of realistic physical three-dimensional phantoms are breast CT, phase-contrast mammography and the existing breast Tomosynthesis, dedicated to screen as early as possible and diagnose cancer in breast. However, manufacturing of such phantoms meets difficulties related to the current technology, suitable materials, manufacturing precision,...
Functionalized superparamagnetic nanoparticles based on poly (succinimide)- b -poly(ethylene glycol) and magnetite have been obtained by immobilization of superoxide dismutase via activation with 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride (EDAC). Dynamic light scattering measurements showed that hydrodynamic mean diameters of the functionalized particles were about 700 nm. These...
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