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Open access

I. Gergely, O.M. Russu, Ancuţa Zazgyva, O. Nagy and T.S. Pop

Abstract

The purpose of this study was to assess the quality of life of patients who underwent anterior cruciate ligament single-bundle reconstruction (ACLR) which involves reconstructing the ligament using autologous graft (semitendinosus and gracilis tendon). This is a retrospective study undertaken between the 1st of January 2010 and December 31, 2011 at the Clinic of Orthopedics and Traumatology Tîrgu-Mureş, involving 30 patients (6 women, 24 men), 17 to 54 years old (mean age of 30.13 years). All the patients underwent ACLR, with the above mentioned technique. The instrument chosen to assess the quality of life was the Short-Form 36 (SF-36) Questionnaire, completed by telephone. This questionnaire has 8 scales which are noted according to the received answers: Physical Functioning (PF), RF (Role Physical), BP (Bodily Pain), GH (General Health), VT (Vitality), SF (Social Functioning), RE (Role Emotional) and MH (Mental Health). The best way to score these scales is by comparing them to the healthy population, which is why this study uses normbased scales where the mean value is 50 and the standard deviation is 10. The scales used in the questionnaire are showed the next results: mean norm-based PF 49.19, RF 46.11, BP 49.82, GH 52.19, VT 52.14, SF 50.43, RE 41.36 and MH 47.18. The general Physical Component showed a mean of 48.93 and the Mental Component a mean of 47.33, close to the standard mean of 50. All these results were included in the standard deviation, which showed that the patients’ quality of life was very close to the quality of life of the normal population. Patients who have a history of ACLR tend to have a quality of life similar to the normal, healthy population.

Open access

S. Nagy, L. Bokányi, I. Gombkötő and T. Magyar

Abstract

Nowadays Light Emitting Diodes (LEDs) are widely utilized. They are applied as backlighting in Liquid Crystal Displays (LCD) and TV sets or as lighting equipments in homes, cars, instruments and street-lightning. End of life equipments are containing more and more LEDs. The recovery of valuable materials – such as Ga, Au, Cu etc. – from the LEDs is essential for the creating the circular economy. First task is the development of a proper recycling technology. Most of the researchers propose fully chemical or thermal-chemical pathway for the recycling of LEDs.

In the meantime our approach based on the thorough investigation of the structure and composition of LEDs, and shown in this paper, is the combination of mechanical and chemical techniques in order to recover more valuable products, as well as to facilitate the mass transfer. Our laboratory scale experiments are introduced, the final aim of which is Ga recovery in accordance with our above approach. It was experimentally proved that the LED chips contain Ga and can be recovered by mechanical processes along with copper-product. Ga is presented on the surface of the chips in GaN form. Mechano-chemical activation in high energy density stirred medium mill and the following acidic leaching resulted in the enrichment of 99.52% of gallium in the pregnant solution.

Open access

Zuh S.G, Nagy Ö., Zazgyva Ancuța, Russu O.M., Gergely I. and Pop T.S.

ABSTRACT

Total hip replacement is one of the most frequently performed orthopaedic interventions that can significantly improve the functional status and the quality of life of patients suffering from hip arthrosis. Recently patient satisfaction and patient-reported results of total hip arthroplasty are increasingly emphasised as important tools for the assessments of these interventions. For patients with arthrosis secondary to hip dysplasia, these evaluations can be more difficult, due to younger age and higher functional demands. In this study we compared the Visual Analogue Scale and the Harris Hip Score in order to determine the correlations between these instruments and analyse the possibility of replacing the Harris Score with the Visual Analogue Scale in evaluating the results of hip surgery in patients with dysplastic hips. Our study included 37 women and 4 men (53 hips), with a mean age of 50.96 years (35-58 years), followed for a mean of 4 years postoperatively. Both assessment instruments were used preoperatively and at the follow-up visits. We observed a positive correlation of the values of the Visual Analogue Scale and the Harris Hip Score both preoperatively and postoperatively, with correlation coefficients of +0.71(P <0.001) and +0.77 (P <0.001) respectively. Given these positive correlations, we assumed that the Visual Analogue Scale could replace the Harris Hip Score in the evaluation of patients after total hip replacement. Still it is recommended to combine the Visual Analogue Scale with objective measurements and radiological examination in order to identify significant postoperative changes.

Open access

A. Ali, G. Elmowalid, M. Abdel-Glil, T. Sharafeldin, F. Abdallah, S. Mansour, A. Nagy, B. Ahmed and M. Abdelmoneim

Abstract

Epidemic outbreaks of avian influenza (AI) virus H5N1 have been frequently reported in Egypt during the last nine years. Here we investigate the involvement of AI H5N1 in outbreaks of acute respiratory disease that occurred in several commercial chicken farms in Egypt in 2011, and we describe to the pathology caused by the virus in the course of the outbreak.

Twenty-one chicken farms with history of acute respiratory symptoms and high mortalities were screened for AI H5N1. Virus identification was based on hemagglutination inhibition test, and PCR detection and sequencing of the hemagglutinin and neuraminidase genes. Virus distribution was determined by immunohistochemical staining of AI antigens in organs of infected birds. Standard H&E staining was performed for histological examination of affected organs.

Eighty-one % of the examined birds, representing 100% of the screened farms, were positive for AI H5N1 virus. Phylogenetic analysis of the hemagglutinin and neuraminidase genes of the isolated virus reveals its affiliation to clade 2.2.1. Viral antigens were localized in the endothelial cells of the heart, liver, lungs and skin, where pathological lesions including congestion, hemorrhages, multifocal inflammation and necrosis were concurrently observed. According to the pattern of the viral antigen and lesion distribution in the visceral organs, we suggest cardiovascular and circulatory failures as the probable cause of death during these outbreaks. In conclusion, the present study further confirms the epidemic status of AI H5N1 virus in Egypt and reveals the highly pathogenic nature of the local isolates.

Open access

Remo Probst, Larisa Bogdea, Dan S. Bandacu, Mirko Bohuš, Svilen Cheshmedzhiev, Ákos Gáborik, Siegfried Geissler, Calin V. Hodor, Dan T. Ionescu, Veselin Koev, Tibor Mikuska, Zsolt Nagy, Tibor Parrag, Vlatko Rožac, Matthias Schmidt, Thomas Schneider, Marko Šćiban, Sándor Tatai, Emil Todorov, Adrian Tomik, Marko Tucakov, Miklós Váczi and Georg Frank

Abstract

In January 2014, the first ever comprehensive winter census of the Whitetailed Eagle Haliaeetus albicilla along the Danube River was conducted, using mostly point and transect counts. Altogether, 550-700 eagles were counted. The upper range of the estimate may in fact be more realistic because 615 km of the Danube were not surveyed. Birds were observed in every country along the Danube. Hotspots of occurrences were (1) the Central Danube floodplains - the area encompassing the lower Hungarian section (Danube- Drava National Park), Kopački rit Nature Park (Croatia), and the Gornje Podunavlje Special Nature Reserve (Serbia); and (2) the Danube Delta Biosphere Reserve. According to the Action Plan for the conservation of the White-tailed Eagle along the Danube, future winter counts should be made regularly, and lower variation in the resulting eagle numbers achieved by a higher degree of synchronization between individual countries. This study reinforces the importance of protected areas along the Danube as a backbone for the conservation of White-tailed Eagles and biodiversity.