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Open access

K. Samu and A. Szakaly-Molnar

Efficient Halogen Lamp Daylight Simulator for Color Vision Examination

Recently there has been a growing interest in the selection of product colors for design engineering purposes and for quality control. The selection is generally based on color samples and the quality control is carried out with specific measurement instruments. In low quantity production it is common to avoid instrumental color measurement using human control personnel instead. For such subjective color judgment it is necessary to have standardized illumination that is usually produced by high cost daylight simulator lamps. Our aim was to build a cost effective daylight simulator with halogen incandescent light sources that can match the parameters (CCT, CRI, MIvis and Illumination) of the similar but more expensive products.

Open access

A. Molnar, M. Benke and Z. Gacsi

Abstract

In this manuscript, correlations were searched for between pin misalignments relative to PCB bores and crack propagation after cyclic thermal shock tests in THT solder joints produced from lead-free solder alloys. In total, 7 compositions were examined including SAC solders with varying Ag, Cu and Ni contents. The crack propagation was initiated by cyclic thermal shock tests with 40°C / +125°C temperature profiles. Pin misalignments relative to the bores were characterized with three attributes obtained from one section of the examined solder joints. Cracks typically originated at the solder/pin or solder/bore interfaces and propagated within the solder. It was shown that pin misalignments did not have an effect on crack propagation, thus, the solder joints’ lifetime.

Open access

C. Molnar, C. Silaghi, C. Rosca, L. Marginean, V.O. Butiurca, A. Tudor and C. Copotoiu

Abstract

Introduction: Hepatocellular carcinoma is the most frequent primary malignant tumor of the liver, being linked in 80% of cases with viral hepatitis ”B” or “C”. Treatment remains a challenge especially in cases with associated hepatic cirrhosis, where preoperative arterial chemoembolization followed by liver resection is recommended.

Case report: We discuss the case of a 64 years old cirrhotic patient, diagnosed by echography, computed tomography, magnetic resonance cholangiography with hepatocellular carcinoma (64x52x46 mm). Preoperative chemoembolization was performed with Lipiodol and 5-FU by supra-selective catheterization of left hepatic artery, followed by favorable radiologic response. Two weeks after embolization, the patient was admitted in Surgical Clinic No. 1 Targu Mures where an atypical resection of the left hepatic lobe (bisegmentectomy II-III) was performed with Harmonic Scalpel. Early and late postoperative evolution was favorable.

Discussions: The principle of arterial chemoembolization is based on the fact that vasculature of primary hepatic tumors is predominantly arterial. Arterial obstruction may lead to ischemic necrosis while tumor embolization combination with a chemotherapeutic agent significantly improves its local concentration. Decrease in tumor size and its vasculature allows for safe hepatic resection especially in the cirrhotic liver.

Conclusion: In case of tumoral cirrhotic liver preoperative chemoembolization decreases intra and postoperative bleeding risk, providing a safe and oncological resection.

Open access

A Tudor, C Molnar, C Copotoiu, VO Butiurca, C Nicolescu, Tudor Bianca and Gurzu Simona

Abstract

Objectives. The aim of our study is to identify a surgical technical that has the lowest rate of pancreatic fistulas in pancreatico-gastric anastomosis following duodenopancreatectomies. We studied pancreatico-gastric anastomosis performed with stitches compared to the ones performed without stitches.

Methods. Our experimental model is based on ten piglets, which were divided into 2 groups. In the first group (n=5) the pancreatico-gastric anastomosis was done using double purse-string threads one passed through the gastric seromuscular layer and one through the gastric mucosa. In the second group (n=5) the pancreatico-gastric anastomosis was performed using sutures through the stomach and pancreas.

Results. Postoperative amylasemia was higher in the second group. In the first group no pancreatico-gastric fistulas were observed, whereas pancreatic necrosis was observed only at a superficial level of the pancreatic stump. In the second group, two cases had developed fistulas, both bordered by large areas of coagulation necrosis accompanied by pancreatic duct hyperplasia. Duration of the anastomosis was shorter for the first group.

Conclusions. In conclusion, the pancreatico-gastric anastomosis performed using two purse-string suture is a feasible, safe and fast process.

Open access

A Tudor, C Molnar, C Nicolescu, C Rosca, Bianca Tudor, V.O Tudor and C Copotoiu

Abstract

Introduction: One of the most feared complications after cephalic duodeno-pancreatectomy remains pancreatic fistula. In recent years, various methods of pancreatico-digestive reconstruction were performed in order to reduce the rate of pancreatic fistula. One of these methods is pancreatico-gastric reconstruction by using two purse string threads.

Case report: We present in this article a patient with jaundice with mixed etiology: tumoral and lithiasic. Subjectively, the patient accused sclerose-skin-jaundice, right upper quadrant and epigastric pain, nausea and vomiting. Computed tomography revealed dilatation of intraand extrahepatic bile ducts, a dilated Wirsung duct and a tumor at the biliopancreatic confluence, leading to a suspicion of vaterian ampulom. Upper endoscopy revealed a tumor protruding in the descending duodenal segment. Intraoperatively a tumor suggestive of vaterian ampulom and duct stones was shown. Surgical treatment consisted of coledocolitotomy, cephalic duodeno-pancreatectomy with pancreatic-gastric anastomosis, performed by using two purse string threads. The postoperative evolution was favorable.

Conclusion: Pancreatico-gastric anastomosis using two purse string threads is a simple, safe and quick procedure, avoiding the application of sutures through the pancreatic parenchyma and thus reducing the rate of pancreatic fistula.

Open access

A. Königová, L. Molnár, G. Hrčková and M. Várady

Abstract

Serratospiculiasis is a parasitic disease caused by filariid nematodes of the genus Serratospiculum, the subfamily Dicheilonematinae. Serratospiculum spp. parasitizes the air sacs and members of this genus have been found in various species of Falcons, Bald Eagles and Cooper’s Hawk from all around the world. In the present study, infection with Serratospiculum was confirmed for the first time in the Great Tit in Slovakia. Nematode infestation was identified post mortem. Lesions in the respiratory system (airsacculitis, pneumonia) were associated with the presence of this nematode. Smears of the necrotic lesions in the crop and oesophagus contained the large numbers of embryonated eggs. Faecal samples were examined by flotation method and Serratospiculum eggs were found. Adult parasites were cleared in lactophenol solution and morphological analysis of male reproductive organs (shape of male nematode spicules) indicated the species Serratospiculum amaculata. Scattered inflammatory cells were seen in the mucosal and submucosal layers of infected oesophagus and inflammatory foci were found mainly in the stroma of the air sacs.

The presence of the filariid nematode in the nonspecific species Great Tit (Parus major) common in Slovakia indicates the importance of monitoring of serratospiculiasis in the avian hosts. The parasite can cause serious health problems, even sudden death of their hosts, therefore suitable effective measures for their elimination should be implemented.

Open access

A. Königová, G. Hrčková, S. Velebný, M. Dolinská, L. Molnár and M. Várady

Abstract

The effect of albendazole therapy on the reduction of drugsusceptible and drug-resistant strains of Haemonchus contortus larvae on day 10 post infection (p.i.), distribution and the relative numbers of innate immunity cells — eosinophils/neutrophils and mast cells in the stomach wall of immunosupressed Mongolian gerbils on days 4/1, 7/4, 10/7 and 14/11 post infection/post therapy (p.i./p.t.) were investigated in the present study. The efficacy of albendazole was significantly lower on benzimidazole (BZ) resistant larvae (L3 and L4 stages) (58.92 %) than the efficacy on susceptible strain of larvae (94.15 %). H. contortus infection elicited strong inflammation in mucosal and submucosal layers of the stomach, where mucosal mast cells MMC) were in the highest numbers in the lamina propria mucosae on day 7/4 p.i./p.t. Reduction of larval numbers following treatment resulted in a gradual decrease of MMC and connective tissue mast cells (CTMC). The lower counts of CTMC in the submucosa were seen in gerbils infected with BZ-susceptible strain during the whole period post therapy. In case of infection with BZ-resistant strain, peroxidase containig cells (eosinophils) peaked on day 7/4 p.i./p.t., whereas infection with BZ-susceptible strain elicited massive accumulation of these cells on day 4/1 p.i./p.t., particularly in the submucosa. No marked differences in eosinophils localisation were observed between both groups after the therapy. Goblet cells were found only in the proximal parts of glandulae gastricae close to the mucosal surface and no differences in the distribution in the stomach wall of both groups of animals were observed. After therapy the higher larval counts in case of BZ-resistant strain were in the correlation with the lower decline of CTMC and eosinophils, but MMC numbers were not significantly different between both treated groups. Present data indicate that in early stage post infection, the distribution of individual innate immunity cells might be directly affected by the larvae, and that the genetic and consequently biological differences related to the resistance to benzimidazoles probably had the impact on the interactions of larvae with the different immune cells in their niche.

Open access

A. Königová, G. Hrčková, L. Molnár, P. Major and M. Várady

Summary

Cathaemasia hians is an obligate trematode parasite of Black storks that are on the List of protected birds in Europe. In the present study, adult trematodes were isolated from the Black stork post mortem and morphological study revealed C. hians species. In total, 10 worms were found in the oesophagus and the ventriculus of the bird. Histopathological examination of the tissue samples of oesophagus, proventriculus and ventriculus was performed on paraffin sections using a set of staining procedures. The sporadic lesions were seen in the tela submucosa of oesophagus containing connective tissue mast cells, eosinophils and heterophils and some foci were surrounded by the fibrous tissue. In addition, a few inflammatory nodules had larval-like material inside, probably being of the same species. There were no visible morphological alterations in the epithelial layer of lamina propria mucosae of proventriculus, rich in goblet cells as well as in the tela submucosa. Majority of trematodes were localized in the ventriculus, where the lamina propria mucosae was damaged or disrupted sporadically. In these sites, in the tela submucosa, a various food-originated inorganic/organic material and eggs of C. hians were deposited, stimulating a weak inflammatory response. Nodules containing larvae were not observed in any of ventriculus tissue layers. This study demonstrated, for the first time, infection with adults of C. hians trematode in the Black stork nesting in Slovakia. The presence of larvae and eggs in the tissues of the upper gastrointestinal tract of bird was associated with mild inflammatory response but feeding behaviour of adult worms in the ventriculus probably contributed to the enhanced susceptibility of the lamina propria mucosae to mechanical damage by inorganic material. Although larval stages have not yet been documented in the intermediate hosts in Slovakia, our report indicates that the life cycle of C. hians might occur in Central Europe.

Open access

Sărăcuț C, Molnar C, Pantiru A, Russu C, Roșca C, Voidăzan S and Copotoiu C

Abstract

Background: In the literature there are a number of studies that suggest a possible correlation between cholelithiasis/cholecystectomy and colorectal cancer. The exposure of the colon mucosa to the action of bile acids that potentially have a carcinogenic effect due to the change in anatomy after cholecystectomy, seems to be the explanation of this association. The purpose of this paper was to search for such a correlation in our study group. Methods: We performed a retrospective cross-sectional study, analyzing the patients admitted to the First Surgical Clinic of the County Emergency Clinical Hospital Tîrgu Mureș, between January 1st, 2005 - December 31st, 2010. Analyzing the medical records, operation protocols and histopathological results, we paid attention to demographics, location of neoplasia, the time elapsed since the cholecystectomy to the discovery of neoplasia, histological types, trying to perform correlations between these parameters and the lithiasic factor. Results: Out of the 534 patients admitted and operated with the diagnosis of colorectal cancer, 15.6% (n = 83) showed a history of gallbladder stone affection. Most patients came from urban areas, the average age was 67.2 (range 39-88 years), females were more affected. The most common locations were: the sigmoid colon (26.5%), rectum (36.3%) and the most common histological form was moderately differentiated adenocarcinoma. Conclusions: Similar to other studies, our work suggests a slight increase in the incidence of colorectal cancer in patients that underwent a cholecystectomy, without drawing a firm conclusion. We deem it necessary to see if diet changes of the Romanian population affect this relationship

Open access

A Tudor, VO Butiurca, C Nicolescu, Bianca Tudor, Simona Gurzu, C Molnar and C Copotoiu

Abstract

Introduction. Although in recent years there have been various versions of pancreatic - digestive reconstruction after cephalic duodenopancreatectomy, this issue is still highly debated.

Purpose. This paper aims at comparing postoperative outcomes after gastric pancreatic anastomosis using transfixing threads as opposed to the purse-string suture method.

Material and methods. Our study consisted of a lot of 15 patients that underwent cephalic duodenopancreatectomy from the 1th of May 2014 to the 30th of April 2015. The pancreatico - digestive reconstruction was done by pancreatico-gastric anastomosis using three different techniques: double purse-string suture used for the patients in the first group (group 1, n = 5 patients); one purse-string suture and 2 transfixing “U-sutures” passed through the stomach and the pancreas for the patients in the second group (group 2, n = 5 patients) and ductomucosa anastomosis with pancreatico-gastric transfixing threads in the third group (group 3, n = 5 patients).

Results. Morbidity was 40% for the entire lot. Pancreatic fistula, occurred in two patients, one type A fistula in a patient in group 2 and one type B fistula in a patient in group 3. Biliary fistula occurred in one patient in group 2. Mortality was at 13.3%. The median time to carry out the anastomosis in group 1 was 14 minutes, for patients in group 2, 20 minutes, and for patients in group 3, 25 minutes.

Conclusions. Gastric pancreatic anastomosis using purse-string sutures is a feasible, safe and fast process which reduces complications due to transfixing pancreatic threads.