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  • Author: Maria Nicolae x
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Abstract

The present study presents, from the theoretical and pragmatic point of view, 6 of the established score models regarding the assessment of the insolvency risk, belonging to the Anglo-Saxon, Continental and Romanian schools. The research sample is made up of 26 companies belonging to the hotel industry and restaurants, listed on the Bucharest Stock Exchange. The research was carried out over a period of 11 years (2007-2017). Following the application of the score models, it was found that during the period covered by the research, a number of 14 companies had a relatively high insolvency risk and 12 of them had a relatively low insolvency risk.

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Abstract

Calcium-phosphate cements is one of the most popular types of biomaterials, both due to their specific properties of self - setting and of their superior biocompatibility.

Although in general the phosphocalcic cements, which are the subject of the present paper, have somewhat lower mechanical properties than other biomaterials based on calcium and phosphorus, or even other dental cements of the same nature. The ceramic compositions presented in the present paper constitute a special category of biomaterials due to other notable advantages that characterize them. Thus, this category of materials is defined by a near-perfect adaptation to the surface of the biological tissue, as well as by a convenient resorption rate, processes followed by the generation of optimal bone formation. In this paper are presented principles of realization of the calcium-phosphate cements (raw materials and conditions of production), as well as the properties of these biomaterials, insisting, in particular, on the chemistry of the setting reactions. At the same time, informations regarding the possibilities of clinical use, such as implants are presented.

Abstract

The research’s purpose is to study the credit institutions’ performance, from the shareholders’ point of view, through return on equity (ROE). It aims to identify a dependency relationship between return on equity (ROE) and endogenous factors (the growth rate of credit portfolio, the growth rate provisions, the solvency ratio), on the one hand and, on the other hand between ROE and the exogenous ones (GDP and inflation rate). The research was done over an horizon of 10 years (2004-2013) on the evolution of the return on equity indicator of two credit institutions listed on Bucharest Stock Exchange (Carpathian Commercial Bank SA and Banca Transilvania SA), highlights their vulnerability to economic conditions. The results obtained indicates, that in both credit institutions, the variation of return on capital is determined in a significant proportion by intern factors and it is conditioned in a insignificant share by the exogenous factors

Abstract

Aim of the study is to present the technological process of obtaining cast iron with lamellar graphite for use in the manufacture of cylinder liners, and to identify the main alloying elements and track their influence on the mechanical properties of cast iron with lamellar graphite.

Also paper presents analysis of 20 batches of cast iron with lamellar graphite, which are made of cylinder liners, in terms of chemical composition and the mechanical properties.

After the analysis of the 20 castings of cast iron Fc 250 it is observed that: the increase in the carbon content shows a decrease of the tensile strength and hardness of the gray cast iron; the increase in silicon content shows a decrease in hardness and tensile strength. Decreasing the amount of graphite and especially the alloy of silicon iron lead to hardness increase 1% Si increases hardness by 50 HB). A statistical analysis has been performed on the data obtained that accounts for changes in alloying additions. A modeling and optimization of mechanical properties (tensile strength and hardness) was performed according to the percentages of carbon, silicon and manganese. Mathematical modeling found that the hardness and traction resistance of the cast iron decreased with the increase in carbon, silicon and manganese content.

Abstract

The research aims to determine the financial performance of the companies listed and traded on the Bucharest Stock Exchange from the manufacturing sector in Romania, compared with the performance recorded by the Bucharest Stock Exchange, based on the exchange rates. It was concluded that the financial performance of the companies included in the research, quantified on the basis of the exchange rates, decreased significantly with the arrival of the financial and economic crisis, currently, the companies being unable to reach the level of performance recorded before the crisis.

Abstract

Background and Aims: We assessed the effect of intensive therapy on modifiable cardiovascular (CV) risk factors and CV risk as compared to conventional therapy in patients with newly diagnosed type 2 diabetes mellitus (T2DM).

Material and Methods: This was an observational, prospective study, conducted in Romania. During 1-year follow-up period the enrolled participants received either multi-factorial pharmacotherapy associated with intensive therapeutic education (Intensive group), or conventional therapy (Control group). Current analysis included data (anthropometric measurements, blood pressure and biochemical parameters) recorded at months (M) 0, 6 and 12. CV risk was calculated at M1 and M12 using the UK Prospective Diabetes Study Risk Engine.

Results: 138 patients aged 57.02±10.05 years were included in this analysis (69 in each group). At M6 and M12 a significant improvement of the majority of the modifiable risk factors in the Intensive group compared to the Control group was observed. At M12, coronary heart disease (CHD)/fatal-CHD risks were significantly lower in the Intensive (7.5%/3.1%) than in the Control (17.95%/10.3%) group (p<0.05). A similar trend was observed for the stroke/fatal-stroke risks.

Conclusions: CHD/fatal-CHD and stroke/fatal-stroke risk burden decreased in newly diagnosed diabetic patients following multi-factorial pharmacotherapy association with intensive lifestyle changes during 1-year follow-up.

Abstract

Cu doped transparent ZnO thin films (CZO) were sputtered on soda lime glass substrates at three different distances between substrate and target. The effects of copper doping on the structural and optical properties were investigated by X-ray diffraction (XRD) and transmittance measurements. The XRD results indicated that CZO thin films have a preferential crystallographic orientation along the hexagonal wurtzite (002) axis. With increasing the distance between substrate-target, from 4 cm to 8 cm, the refractive index of the CZO films decreased. In the visible wavelength region, the average value of the transmittance was above 80%. Thus, significant changes in the structural and optical properties have occurred due to the decrease of the distance between the target-substrate and the residual compressive stress at the film-substrate interface arising during deposition.

Abstract

The study’s main objective is represented by the analysis of the reasons that lead to the appearance of an agricultural companies’ default risk, based on the failure rate model developed by Wilson. In the construction of the regression model were taken into consideration the evolution of the two macroeconomic variables: the inflation rate and the variation of the exchange rate over a period of 4 years (2010-2013). The research’ results have shown that the variation of the bankruptcy rate registered by the agricultural sector is 99.99% explained by the variation of both of the macroeconomic explanatory variables.

Abstract

Medicine and the pharmaceutical industry have a long and rich history of events. The transition from magic to modern medication was gradually achieved over thousands of years of evolution. Ambroise Pare, a French anatomist and surgeon from the 16th century, stated that it was very simple: “The doctor cares, God heals.” The medical-industrial complex appears to grow much faster than the economic power. And this is because the system is oriented not only by the demand, but also by doctors who play a double role. They offer medical services and, at the same time, they control their need (demand). Along with human and technological evolution, in some countries of the world, medicine can be inaccessible, perhaps untouchable or it is even considered to be a luxury. In this case, luxury is presented in the form of rationality that draws the medical world at various congresses, where the only words that can characterize the event are: the performance, high-class, luxury and international reputation of the doctors or of the speakers. This article briefly outlines the results of a qualitative marketing research among medical congress organizers-social events where high-quality marketing blends nicely with the quality of modern medicine news and perspectives, thus forming a clearer picture of the tradition and the priorities of topics chosen for medical events. The result of the research is reflected in the sketch of a program of such an event in Romania, combining the high scientific performance with social elements that can significantly increase the attractiveness of such a manifestation. In order to obtain a conclusive feedback, a useful tool is also developed and accessible to the organizers. The bibliography supports theoretically the concepts with which it operates (event marketing, the significance of high-class professional performance and the specific coordinates of the medical sector).

Abstract

Insulin resistance (IR) is a fundamental disorder of type 2 Diabetes Mellitus (DM), but it is also involved in the etiopathogenesis of type 1 DM, with important implications in the onset and progression of micro- and macrovascular complications in type 1 DM. Overweight plays the main role in the increased incidence of both types of DM, exacerbating IR. The epidemic increase of overweight and obesity makes it difficult to diagnose the exact phenotype of DM, as IR and autoimmunity often coexist. Many studies showed an increase in incidence of micro- and macrovascular complications in patients with type 1 DM with IR, compared to patients with type 1 DM without IR. The gold standard of IR evaluation is represented by the method of euglycemic-hyperinsulinemic clamp, applied on a reduced scale in research. Thus, it is necessary to identify early IR markers (clinical or biological markers), less laboured ones, that could be used on a large scale in current medical practice, for the IR determination in type 1 DM. Clinicians and health experts should prevent/ reduce the epidemic of overweight and obesity in young people, thus decreasing IR, and implicitly the chronic complications of DM.