162 research outputs found
Platelet-Rich Plasma Guided Injections: Clinical Application in Peripheral Neuropathies
Platelet-Rich Plasma (PRP) is defined as an autologous concentrated preparation of platelets and their associated growth factors in a small volume of plasma. The presence of these growth factors has stimulated the scientific community to search about possible benefits of the use of PRP in tissue regeneration. Provided that previously in vitro and animal research demonstrated that PRP could probably play an important role in the treatment of neural tissue disorders, we aimed to review the current literature, regarding the clinical studies that have been conducted to confirm this hypothesis. More specifically, we have reviewed the literature concerning the clinical application of PRP in peripheral neuropathies and investigated if there is strong evidence to establish the use of PRP in clinical practice as a therapeutic option. In contrast with animal studies, we have been able to identify only few clinical data concerning the use of Platelet-Rich Plasma (PRP) in peripheral neuropathies. We found 5 trials matched to our research that have yield positive and promising results for the future for the application of PRP for the therapy of disorders of the peripheral nervous system. It is obvious that this interesting field of research gives to the scientists the ability to expand it extensively, in terms of both quality and quantity
Finite element type of stress analysis for parts based on S235 JR steel welding
The determination of static and/or variable stress, in case of complex shaped welded structures is hard to achieve. One solution, though, is the use of finite element method, implemented by means of various specialized software. Nowadays, this method has become very popular due to its high precision of data obtained through both research and finite element analysis. Hence, the present paper deals with the modelling of the pull-out behaviour of concave and convex welded joints through finite element method
The influence of the specific rehabilitation techniques „toegrindig” and „WIG remelting” in case of welded structure
The fillet welded structures, fatigue stressed, must have a concave shape in cross section and a smooth transition between weldseamand base material, without stress concentrators . In this issue for the welded structures with convex fillet welds, to improve the behavior in case of fatigue loads it will be necessary to apply rehabilitation techniques like toe grinding or WIG remelting. The paper wants to present the influence of that two rehabilitation technique and the behavior of the rehabilitated welded structures in case of static and dynamic loads
Contribution to the measurement of stress level post stress management training
The case study presented in this article consists in a questionnaire meant to detect
stress in employees after a stress management training session. The study is a novelty because
was elaborated on a group of employees after they learn one months about occupational stress
management. Over the time, many of the studies conducted in the field of stress focus on a
combination of the factors like this: reducting stress exposure and developing programes for
physical exercises - relaxation and meditation. It is very important to have information about
stress because it can change the perspective of life and the way in which we can see that a
situasion can be negative or positive one
Unique method for structural synthesis of the machines planed with bars and dogs
The planar mechanisms with articulated bars and gears (which we will simply note
MeBaRd) are part of the general planar mechanics category. Although structural structural
studies have been carried out [7], the structural synthesis of bars and wheels can be approached
as a distinct problem. Some papers refer directly to a certain class of mechanisms, such as
planetary mechanisms [1], [2], others stop on subsystems with zero mobility, called structural
groups with toothed elements [6], [8]. In this paper, developing some ideas presented in [3],
[5], a general algorithm for unitary structural synthesis of MeBaRd was developed and
developed, having the input parameters: M - the degree of mobility and N - the number of
contours
Efficiency of a production line by application of the Kanban method
This paper aims to present the study on the implementation of the Kanban system
for the "bicycle wheel" benchmark in demand-side conditions. Due to variations in customer
orders, production on the "Wheels" line is inconsistent, with work volume being also variable.
In this way, dead times appear, production stagnating at some times, and in others being
overstretched. There is a problem of finding a method of leveling the production, which also
leads to a better performance of the Logistics department within the "Expedition" service.
The work was carried out following a study with data provided by SC MECHROM
INDUSTRY SRL, a member of the CAMPAGNOLO group, a bicycle manufacturing
company, exclusively for performance sport
Integral curses of the disc drama model with fundamental dynamic characteristics tt-ds
The paper deals with the dynamic response of mechanisms with standardized inertial
and mechanical characteristics. Moment or inertial mass is periodically variable with
displacement, and torque or mechanical force are periodically variable with displacement and
represented by linear, square or cubic functions in relation to speed. In this paper both the
inertial moment and the torque variation were used for the T-shift. For the variations of torque
torque versus speed, the straight-inclined DS was used. Comparable results charts are based on
computer programs
Impact on quality of production using 5S method
Efficient and quality work requires a clean environment, security and rigor. The
principle of 5S, namely Seiri, Seiton, Seiso, Seiketsu, Shitsuke, allows the construction of a
functional working environment, driven by simple, precise and efficient rules. The 5S is the
foundation on which progress is being made, the deployment of Lean-manufacturing means
and methods, being a lever of change management. At the same time, the 5S can be considered
as the basic rules of order, discipline, unmistakable preliminaries for a whole improvement
project
Case study on measuring the level of stress in the academic environment in France
The study is a novelty because was elaborated on a group of students in the
academic environment in France. Following the documented steps, I have noticed that several
questionnaires have been used in order to identify stress levels in the academic environment.
The case study presented in this article consists in a questionnaire meant to identify stress
factors. There are several factors that are likely to cause stress: changes to routine, time
pressure, difficult tasks, too much homework’s, financial state, sleep schedule and physical
work conditions. I believe that stress management results could be visible if we can motivate
people to adjust their behavior and life styl
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