Acta Universitatis Cibiniensis. Technical Series
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Published By Walter De Gruyter Gmbh

2668-6449

2019 ◽  
Vol 71 (1) ◽  
pp. 5-8
Author(s):  
Sergiu Batâr ◽  
Florina Batâr ◽  
Victor Costache ◽  
Ioan Manțiu

Abstract Cardiac arrhythmias occur frequently in valvular patients. In valvular patients the role of echocardiography is essential, due to prognostic variations. A common indication of CT coronarography is the evaluation of the coronary arteries, with the highlighting of the light coronary plaques, but also accurately measures the dimensions of the left atrium and the anatomy of the pulmonary veins. In the last years cardiac MRI (magnetic resonance imaging) has been used in the clinic and research media to establish the gold standard measurement for the volumes of heart cavities, their function and tissue structure. All these three methods are essential for the evaluation and treatment of the cardiac patient with important arrhythmia.


2019 ◽  
Vol 71 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Alexandru Bârsan

Abstract The approach of this paper was to analyze the technical borders of industrial robots and to provide an overview of current technology, technical constraints and the potential types of future research suggestion concerning robotic machining. These complex automation machines used in manufacturing processes are an emerging chapter of industrial engineering that contribute to automatically performing operation in subtractive manufacturing and sheet metal forming processes. Compared with CNC machines which have shape limitations and have the restricted working area, the industrial robot is a flexible, cost-saving alternative.


2019 ◽  
Vol 71 (1) ◽  
pp. 49-54
Author(s):  
Radu Emanuil Petruse ◽  
Nicolae Florin Cofaru ◽  
Ileana Ioana Cofaru

Abstract The paper is an interdisciplinary medical and engineering approach that aims to optimize the accuracy of the High Tibial Osteotomy surgical intervention. The axial deviations of the human inferior limb are presented in the first part of the paper. Without altering the shape of the bones, these deviations cause the wear of the knee’s articular cartilage by gonarthrosis. One of the most common and effective treatment modalities for eliminating axial deviations is High Tibial Osteotomy. Because the surgical procedure involves 3D spatial bone cutting, the accuracy of the procedure and thus the success of the operation and the recovery of the patient is dependent on the execution of these cuts. Within this paper, a specialized device is proposed that makes it possible to guide the surgical saw and to accurately perform the correction angles. In the last part of the paper, customization possibilities and fabrication of the main elements of the cutting device using Additive Manufacturing processes are presented.


2019 ◽  
Vol 71 (1) ◽  
pp. 21-24
Author(s):  
Ana Maria Alecusan ◽  
Andrei Dimitrescu ◽  
George Adir

Abstract The European Union regularly develops research, development, innovation (RDI) strategies for seven years for member countries. Romania benefited from the first RDI strategy during the period 2000-2007, during which our country was trying to meet the conditions of EU accession. Romania is a member of the EU since 1st January 2007 and started, based on the EU’s RDI strategy, to develop its own strategy. The present paper aims to analyze the achievement of the general and specific objectives established by National Strategy for Research, Development and Innovation (NSRDI) 2007-2013, the evolution of the results 2014-2017 and what could be the measures and programs taken by Romania in 2019-2020 to bring our country closer to achieving the established objectives through NSRDI for the period 2014-2020.


2019 ◽  
Vol 71 (1) ◽  
pp. 62-66 ◽  
Author(s):  
Mihai-Octavian Popp ◽  
Mihaela Oleksik ◽  
Sever-Gabriel Racz ◽  
Gabriela-Petruța Rusu

Abstract Incremental forming process is a relatively new process among researchers, which is yet to be implemented in automotive and aerospace industries. The researchers are studying various process strategies and methods to improve the geometrical accuracy of the parts obtained by incremental forming, because the geometry of the parts is one of the key factors holding back the process industrialization. One good method to investigate the benefits of a process strategy is by means of numerical analysis, from which the results obtained can confirm or disprove the gains of the researched strategy. The aim of this paper is to present the advantages of using a fluid under pressure as a supporting die instead of using a conventional fixed backing plate for the single point incremental forming process.


2019 ◽  
Vol 71 (1) ◽  
pp. 76-80
Author(s):  
Radu Emanuil Petruse ◽  
Ioan Bondrea ◽  
Ioan Cristian Nicolae

Abstract The paper is focused on identifying the main requirements for developing a CPPS demonstrator prototype. This research aims to categorize the main components and interactions within a new manufacturing system which are required to accommodate a CPPS. The proposed CPPS demonstrator also includes the preliminary requirements identified from the discussions with the regional industry, so that the prototype of the production system could be easily understood and also be the basis for further collaborations. The identified requirements were structured according to the top-down principle focusing on accomplishing the major objectives to be achieved through the prototype of the production system but also on the detailed concepts of the product and the production stations, thus preparing the choice for a concrete technical solution.


2019 ◽  
Vol 71 (1) ◽  
pp. 1-4
Author(s):  
Florina Bolea Batar ◽  
Gabriela Eminovici ◽  
Andra-Maria Bebeselea ◽  
Ioan Manitiu

Abstract Ischemic heart disease is the most common heart pathology in medical practice. Proper assessment of the size of myocardium injury and its consequences on the heart function is extremely important both for a correct drug therapy and for interventional approach. Most frequently the left ventricle is affected. The need for accurate evaluation of the impact of left ventricular myocardial damage has led to the development of new imaging techniques and improvement of the existing ones. At the moment the most commonly used imaging method for the assessment of left ventricular function is echocardiography. Cardiac Magnetic Resonance and nuclear tomography are precious imaging techniques as well. They are more expensive but bring valuable information when used in adequate situations.


2019 ◽  
Vol 71 (1) ◽  
pp. 72-75
Author(s):  
Andreea Cristina Tataru ◽  
Aurora Stanci

Abstract One of the most recent global environmental problems is noise pollution. Noise pollution is a component of environmental pollution. Like any other type of pollution, noise pollution has negative effects on environmental factors. The main sources of noise are: industry, urban areas and transport. To reduce the level of noise pollution is necessary to determine the pollution sources that cause. In this paper we will study the main areas affected by the noise pollution caused by the traffic in the city of Petrosani. We will also present solutions for reducing the pollution of the affected areas in Petrosani.


2019 ◽  
Vol 71 (1) ◽  
pp. 43-48
Author(s):  
Diana Muntean ◽  
Mihaela Oleksik ◽  
Octavian Bologa

Abstract The research aims to test polymer materials as the plastic materials: UHMWPE and POM, to observe there characteristics, to determing how they can be used and what we can obtain from them. We wanted to see the strong and the weak values that characterize them, what kind of parts we can produce from them and in what case we can use it. By applying this tests is necessary in order to see real datas that can help you compare them, and lead you to conclusions. Using these methods of testing materials leads to the establishment of real properties of the material and to the establishment of new configurations necessary to be made to the manufactured parts.


2019 ◽  
Vol 71 (1) ◽  
pp. 30-37
Author(s):  
Laura-Diana Iamandi-Gido ◽  
Mihai Neghină

Abstract Estimating the number of identical objects is a fundamental recognition task that requires exhaustive human effort. Automating this task in a warehouse would reduce the human load significantly. In this paper, we propose a method to automatically detect the number of objects, requiring only low-tech hardware and low-processing software, in a manner that provides optimal performance for the needed tasks. This method combines the physical weight of objects and simple image processing that do not require complicated operations, such as the detection of objects and their locations or the extraction of object figures. The experimental results demonstrate the increased effectiveness of the proposed method compared to methods based on weight alone or on image processing alone.


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