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C. Bizdadea, S. O. Saliu and M. Toma

Abstract

A particular case of interactions of a single massless tensor field with the mixed symmetry corresponding to a two-column Young diagram (k,1) with k=4, dual to linearized gravity in D=7, is considered in the context of: self-couplings, cross-interactions with a Pauli-Fierz field, cross-couplings to purely matter theories, and interactions with an Abelian 1-form. The general approach relies on the deformation of the solution to the master equation from the antifield-BRST formalism by means of the local cohomology of the BRST differential.

Open access

E. Evin, M. Tomáš, J. Graban and M. Tóth

Abstract

Nowadays, number of customer and environmental requirements are laid to the automotive industry. These are related to safety increase, the weight and emission reduction as well as the life-time improvement. The article presents the way to improve the corrosion resistance of the car-body components when coated steel sheets are used based on Zn-Al-Mg coatings. Thus, the life-time of the car-body is improved. Samples with conventional Zn coating and samples with advanced Zn-Al-Mg coatings were deformed by stretching and 3-point bending to 90° and 180° tests. Consequently, the samples were exposed to salt spray in the corrosion chamber. Time to red corrosion appearance and adequate percentage of corroded surface was evaluated. The results showed the better corrosion protection of Zn-Al-Mg coatings when compared to the conventional Zn coating.

Open access

J. Brezinová, J. Slota, M. Tomáš and J. Koncz

Abstract

This paper presents the results of research aimed to measuring the corrosion properties of EDDQ steel sheet. The strain amount influence to the corrosion properties of the steel sheet for drawn parts has been proven by the modern methods of corrosion monitoring such as Electrochemical Impedance Spectroscopy. Corrosion rate was assessed using electrochemical methods in 0.1 M solution of NaCl. Experimental studies have pointed out if strain amount increases the corrosion rate of the steel sheet increases too.

Open access

Yousef M. Elgzeli, Tomáš Ondovčin, Zbyněk Hrkal, Jiří Krásný and Jiří Mls

Abstract

Elgzeli, Y.M., Ondovčin, T., Hrkal, Z., Krasny, J. and Mls, J. 2011. Impacts of heavy groundwater pumping on hydrogeological conditions in Libya: Past and present development and future prognosis on a regional scale. Acta Geologica Polonica, 63 (2), 283-296. Warszawa.

Libya, like many other regions with arid climates, suffers from inadequate water resources to cover all the needs of this rapidly developing country. Increasing amounts of water are needed to supply the population, as well as for agricultural irrigation and industrial use. As groundwater is the main water source in the country, it represents a natural resource of the highest economic and social importance. Conceptual and numerical models were implemented on a regional scale to show how the natural situation has changed following heavy groundwater abstraction during the last decades in the northwestern part of the country. The results of the numerical model indicated that the current zones of depression of the piezometric surface could have been caused by smaller withdrawn amounts than previously estimated. The differences in the assessed withdrawn groundwater volumes seem to be quite high and might have a considerable influence on the future possibilities of groundwater use in the study region.

Open access

S Spandole, D Cimponeriu, M Toma, I Radu and D.A. Ion

Abstract

Torque teno viruses (TTVs) are recently discovered DNA viruses, with heterogeneous genomes, highly prevalent in populations worldwide. The species that infect humans are Torque teno virus (TTV), Torque teno midi virus (TTMDV) and Torque teno mini virus (TTMV). High-resolution melting analysis (HRMA) is a sensitive and effective method for genotyping and mutation scanning. Up to now, HRMA has not been utilized for detection of TTVs.

The aim of this study was to asses if HRMA is suitable for detecting TTVs variants. DNA was extracted from the blood and saliva of 13 healthy subjects for method optimization. Additionally, saliva samples from 100 healthy individuals were collected for estimating the TTVs’ prevalence. Viral DNA was amplified by heminested polymerase chain reaction (PCR). Second round amplicons were used for the HRMA. The samples were analyzed using two fluorescent dyes, SYBR® Green I and EvaGreen®.

The prevalence values for TTV, TTMDV and TTMV were 71.0, 31.0 and 54.0%, respectively. The three major melting curve patterns corresponding to TTV, TTMDV and TTMV on HRMA can be easily distinguished regardless of kit used. Our results showed that HRMA is a rapid and efficient method of detecting human TTVs.

Open access

Nicoleta Toma, Maria M. Stancu and Octavian Savu

Abstract

Background. Acute intermittent porphyria (AIP) is a hereditary metabolic aberration resulting from a partial defect in the activity of the enzyme porphobilinogen deaminase (PBDG) during the course of haeme synthesis. Diabetic metabolism may attenuate the episodes of porphyria related symptoms.

Case report. Our subject (male; age 75) was hospitalized one week after onset of diffuse abdominal pain and constipation and overt type 2 diabetes mellitus (DM). The patient’s long history of alcohol intake with acute alcohol consumption 12 days before admission, in the presence of abdominal pain with spectacular remission after oral administration of 5% glucose solution, accompanied by a 2.5 fold increase of urinary porphobilinogen with normal values for porphyrins and urinary lead, and normal full blood count establishes the diagnosis of AIP.

Conclusion We describe a case of AIP probably triggered by acute alcohol consumption, with neurovisceral dominant clinical picture mimicking an acute abdomen. Late disease occurrence as first acute episode at older age accompanied by overt type 2 DM, suggests a latent type of AIP in our patient. The appropriate recognition of latent AIP cases in proband’s offspring prevents unnecessary blind surgery when repeated episodes of unexplained abdominal pain occur.

Open access

Pedro A. Sánchez-Miguel, Francisco M. Leo, David Sánchez-Oliva, Diana Amado and Tomás García-Calvo

The main aim of the research was to examine the relationship between motivational orientations and parents’ behavior with regard to the players’ motivational orientation, motivational climate, enjoyment and amotivation. The sample comprised 723 athletes (M = 12.37, SD = 1.48) and 723 parents (M = 46.46, SD = 2.56). Players were male and female who belonged to federative basketball, handball, football and volleyball teams. Parents and athletes completed questionnaires that assessed motivational orientations, parents’ involvement in the practice as well as enjoyment and motivation in the sport. Results showed a positive relationship between parents’ support of the sport and players’ enjoyment and a negative relationship with players’ amotivation. Moreover, in players who perceived more pressure from their parents, there was a positive association with amotivation and a negative one with enjoyment. Lastly, it was emphasized that appropriate parental participation can promote an increase of players’ enjoyment of and motivation for sport

Open access

T. Peráček, F. Vojtech, M. Srebalová, B. Pekár, B. Mikušová-Meričková and M. Horvat

Abstract

After years of mainly expert discussions (not only in the Slovak legal environment), the concept of and legislation on re-export offer a sort of solution provided for in the Act no. 306/2016 Coll. Said act amends the key legislation in this field, namely the Act no. 362/2011 Coll. on Medicinal Products and Medical Devices and on the amendment of certain acts, as amended (hereinafter referred to as the “Act on Medicinal Products”) and the Act no. 363/2011 Coll. on the Scope and Conditions of Payments for Medicinal Products, Medical Devices and Dietetic Foods from Public Health Insurance and on the amendment of certain acts, as amended (hereinafter referred to as the “Act on Payments”). The topic of the paper belongs in the area of medicinal products and pharmaceutical services, it offers, however, significant overlaps in the area of the constitutional, administrative and European law and is aimed at multidisciplinary research into the issue of the reverse export (re-export) of medicinal products. Besides these laws, also the Constitution of the Slovak Republic (“SR”) and the sources of the European Law have to be taken into account in relation to the subject in question. The main aim of legislation in this area of law was restriction on the re-export of selected products and protection of patients from adverse impacts of such business activity. The aim of the paper is the authors’ effort to analyse the issue of the re-export of medicinal products within the context of the adopted Act no. 306/2016 Coll., whose legislative solution is inevitable for the protection of life and health of the population of the Slovak Republic.

Open access

Juan J. Pulido, David Sánchez-Oliva, Francisco M. Leo, Sergio Matos and Tomás García-Calvo

Abstract

The main goal of the study was to assess the effects of an intervention programme developed with soccer coaches, based on promoting strategies to optimise the satisfaction of the basic psychological needs of athletes. Eight soccer coaches, aged between 19 and 50 years (M = 32.5; SD = 14.34), participated in the study. They were selected intentionally (without academic or federative training) and divided equally into a control and an experimental group by random peer selection. Also, 109 soccer players, aged between 11 and 15 years (M = 13.78; SD = 1.38), divided into a control group (CG; n = 56) and an experimental group (EG; n = 53), participated in the experiment. The training programme (12 hours) was aimed to develop methodological and motivational strategies to promote autonomy, competence and relatedness need satisfaction among the players. The results showed that the participants in the EG decreased competence and relatedness control, while significantly increased (post-intervention) competence and relatedness needs satisfaction. Moreover, values for the EG did not decrease for autonomy, competence frustration and amotivation, while they increased for the sport commitment. Also, intrinsic motivation decreased in both groups (greater decrease in the CG). In conclusion, we can affirm the effectiveness of the training programme to create an environment of “bright side” motivation, and reduce thwarting styles, needs frustration and low self-determination levels.

Open access

Francisco M. Leo, Pedro A. Sánchez-Miguel, David Sánchez-Oliva, Diana Amado and Tomás García-Calvo

Abstract

The principal aims of the study were to define different profiles of cohesion and perceived efficacy in soccer players and to measure their differences in performance. The subjects were 235 soccer players in the under-18 category who played in the National League in Spain and 15 coaches whose ages ranged from 29 to 45 years. Diverse instruments to assess cohesion, perceived efficacy, and expectations of success were used in the study. Moreover, we measured playing time and performance. The results of the study proved the existence of four cohesion and efficacy profiles that presented significant differences in expectations of success, playing time, and performance. Furthermore, significant differences were found in the distribution of players in the teams as a function of performance. The main conclusion of this study is that soccer players with higher cohesion and collective efficacy levels belonged to teams that completed the season at the top-level classification. In contrast, athletes with low cohesion and collective efficacy usually played in unsuccessful teams. Coaches and sports psychologists are encouraged to promote both social and task cohesion and collective efficacy to enhance team performance.