bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect Of The Gadolinium Oxide Addition On The Electrical Properties Of Tetragonal Zirconium Dioxide
Authors: Cyran J. , Wyrwa J. , Drożdż E. , Dziubaniuk M. , Rękas M. 
Published: August 2015

AbstractThe aim of this work was examination of gadolinium-doped 3YSZ electrical and structural properties. Such materials may be used as electrolytes in intermediate temperature solid oxide fuel cells (IT-SOFC). First step of the research was synthesis of 3YSZ with different contents of gadolinium (0.25; 0.5; 1.0 at %). Prepared materials were characterized by high porosity. No effect of gadolinium addition on grain size was observed. The experimentally determined values of grain interiors electrical conductivities for gadolinium doped samples are comparable to grain interior conductivities of gadolinium free tetragonal zirconia. On the other hand, a clear effect of gadolinium addition on electrical conductivity of grain boundaries was observed. It was found that 3YSZ containing 0.25 at. % Gd was the most promising from the investigated materials as a solid electrolyte for IT SOFC.
Some Aspects Of Infiltration Of High Speed Steel Based Composites With Iron Addition
Authors: Madej M. 
Published: August 2015

AbstractAttempts have been made to describe the influence of the production process parameters and additions of iron powders on properties of copper infiltrated HSS based composites. The powder compositions used to produce skeletons for further infiltration were: M3/2, M3/2+20% Fe and M3/2+50% Fe. The powders were cold pressed at 800 MPa. The infiltration process was carried out in vacuum. Both green compacts and preforms sintered for 60 minutes at 1150°C in vacuum were contact infiltrated with copper to yield final densities exceeding 97% of the theoretical value.The as-infiltrated composites were tested for Brinell hardness and bending strength, and subjected to wear tests performed by block-on-ring wear tester. From the analysis of the obtained results it has been found that the mechanical properties are mainly affected by the manufacturing route and composition of porous skeletons used for infiltration. Considerable differences in hardness between materials obtained from the two infiltration routes have been observed, with lower wear rates achieved after direct infiltration of green compacts.
The Influence Of Repair Welded Joint On The Life Of Steam Pipeline Made Of Cr-Mo Steel Serviced Beyond The Calculated Working Time
Authors: Zieliński A. , Golański G. 
Published: August 2015

Abstract
The aim of the paper was to examine the influence of repair welded joints on the service life of steam pipelines for over 220 000 hours of service in creep conditions. The research included the study of the microstructure using scanning microscopy, the tests on mechanical properties at room and elevated temperature, determining the nil ductility transition temperature, and short-time creep tests to determine the residual life of the material. The tests allowed determining the time of further safe operation of elements of the steam pipeline with a repair welded joint, with reference to the base material, and the welded joint after service. The assessment of residual life and disposable residual life, and at the same time determining the possible time of further safe operation, has an essential meaning in the case of elements serviced considerably beyond the calculated working time.
Critical Assessment Of The Issues In The Application Of Hilbert Transform To Compute The Logarithmic Decrement
Authors: Majewski M. , Magalas L.B. 
Published: August 2015

Abstract
The parametric OMI (Optimization in Multiple Intervals), the Yoshida-Magalas (YM) and a novel Hilbert-twin (H-twin) methods are advocated for computing the logarithmic decrement in the field of internal friction and mechanical spectroscopy of solids. It is shown that dispersion in experimental points results mainly from the selection of the computing methods, the number of oscillations, and noise. It is demonstrated that conventional Hilbert transform method suffers from high dispersion in internal friction values. It is unequivocally demonstrated that the Hilbert-twin method, which yields a ‘true envelope’ for exponentially damped harmonic oscillations is superior to conventional Hilbert transform method. The ‘true envelope’ of free decaying strain signals calculated from the Hilbert-twin method yields excellent estimation of the logarithmic decrement in metals, alloys, and solids.
Immunoexpression of Ki67 and p53 in the Dental Follicles of Impacted Teeth
Authors: Emoke Fulop , Adina Coşarcă , Mariana Păcurar , Alina Ormenişan , Adriana Monea , Grigoraş R , Simona Mocan 
Published: August 2015

Abstract

Aim. The purpose of this study was to evaluate the morphological aspects of dental follicles associated with impacted teeth and the immunoexpression of Ki 67 and p53, in the remaining epithelium from impacted third molars and canines. Another aspect was to identify the transformation of the remaining epithelium within the odontogenic lesions.

Material and method. We included in the study a number of 100 dental follicles, of which only 62 met the inclusion criteria. The immunohistochemical reactions were carried out in the Immunohistochemistry Lab at the Department of Histology of the University of Medicine and Pharmacy of Târgu Mureş. We counted 100 cells from the remaining epithelial islands from which we determined the percentage of labeled cells for both markers. After this all data were subjected to a statistical analysis.

Results. Out of the 62 specimens 44 were from females and 28 from males. Positive results were obtained for the two markers but not for all cases. We have also found a positive correlation regarding the immunolabeling of the two markers (p=0.002 in canines, p=0.0001 in molars). Median values for ki67 were statistically significantly higher than the values for p53 for both types of dental follicles.

Conclusions. Both markers were expressed in the remaining epithelial islands. The stronger expression of Ki67 in the follicles of impacted molars can demonstrate the higher frequency of odontogenic cysts in this area.
Bisphosphonate-Related Osteonecrosis of the Jaws: a real Challenge for Dentists
Authors: Ioana-Auriţa Albu , Cecilia Petrovan , Mariana Păcurar , Albu DE , Csinszka K.-Ivacson A , Golu VM , Copotoiu C 
Published: August 2015

Abstract

Background: Osteonecrosis of the jaw is a serious complication associated with oral and intravenous bisphosphonate therapy. Its pathogenesis is not well understood and its management is difficult. The aim of ourstudy was to evaluate the awareness of dentists in Târgu Mureş on the possibilities of treating patients who are treated with bisphosphonate in dental offices.

Material and method: We carried out a questionnaire-based study among dentists in Târgu Mureş reaching important issues such as: if the patient is asked if medical history follows / followed treatment with bisphosphonates, if they made surgical treatment in these patients, if they know under what conditions can they perform this treatment, if they deem it is necessary to contact the prescriber before surgical treatment.

Results: Seventy questionnaires were returned. During the medical history most clinicians (60%) asked the patients whether they follow/followed treatment with bisphosphonates and most of them (42.85%) did not perform treatments in these patients. While 85.71% of respondents declared that they do contact the prescriber before performing surgical treatment, 48,57% were not aware under what conditions they could undergone the treatment.

Conclusions: The dentists did not seem to be well informed about this pathological entity, known only since 2003. In the absence of appropriate protocols they could not provide a high quality treatment and in these circumstances they might do more harm than good.
The frequency of dental caries in adult patients with gastroesophageal reflux disease
Authors: Sîmpălean DS , Dana Ghiga , Petrişor M , Măruşteri M , Bacârea V , Simona Băţagă 
Published: August 2015

Abstract

Introduction. The aim of the study was to evaluate the frequency of dental caries in adults patients with gastroesophageal reflux disease.

Material and method. A cross-sectional study was performed between November 2013 and October 2014. All subjects who agreed to participate to the study were asked to complete a questionnaire regarding personal information, oral hygiene and dental evaluation. The individuals with complete false teeth (superior and inferior removable prosthetic devices) were excluded from the study. The study included 134 people divided in two groups, based on upper gastrointestinal endoscopy: a group with gastroesophageal reflux disease (71), and a control group (63). Dental evaluation was performed by a dentist blind to the diagnosis of the subjects. Dental caries were evaluated by applying the decayed, missing, and filled teeth index (DMFT index). The statistical significance was defined as p<0.05.

Results. From 71 subjects included in GERD group, 33 (46.48%) were males and 38 females (53.52%) with a mean age of 44.99±11.19 (42, 59.15% from urban area and 29, 40.85%, from rural area). In the control group we included 28 (44.44%) males and 35 (55.56%) females (mean age 43.84±9.48) and 29 (46.03%) subjects were from urban area and 34 (53.97%) from rural area. DMFT index in GERD group was 19.49±4.28 and in control group 18.16±4.54 (p<0.05).

Conclusions. The present study showed that there is no difference between GERD and control group, regarding the frequency of dental caries.
Piggy-back Hepatic Transplant Technique and Veno-venous Bypass Without Cardiac Arrest: A Multidisciplinary Approach in Borderline T3b/T3c Renal Tumors
Authors: Nechifor-Boila IA , Suciu H , Andrada Loghin , Angela Borda , Maier A , Orsolya Martha , Chibelean C 
Published: August 2015

Abstract
Surgery for renal cell carcinomas with tumor thrombus extending in the Inferior Vena Cava (IVC) can be particularly challenging, especially in the retrohepatic and intraatrial situations (T3b and T3c). Classically, these tumors require the intraoperative use of cardio-pulmonary by-pass (CPB) and deep hypothermic circulatory arrest (DHCA), that can result in specific complications (stroke, platelet dysfunction), with increased postoperative morbidity rates.
In urological practice, a particular IVC preparation method is currently in use, allowing full control both upon the IVC and its tributaries. It is derived from the “piggy-back” liver transplantation technique and implies the resection of all hepatic ligaments, leaving the hepatic vascular connections intact. This procedure is joined by a form of veno-venous bypass (between the right atrium and the infrarenal IVC) that allows a constant central venous pressure (by assuring blood return), with less bleeding and without the need for CPB and DHCA (avoiding, in this way, their inherent complications). All in all, these recently-introduced procedures can offer better thrombus control, improved oncologic outcomes and smaller complication rates. We aim to present a case of borderline T3b/T3c renal tumor that was successfully treated in our university center using these techniques.
Left Ventricular Non-compaction Cardiomyopathy - A Case Report
Authors: Timea Szakacs Xantus , Andreea Varga , Elena Bocicor Andreea , Tatar R , Tilea I 
Published: August 2015

Abstract

Background: Left non-compaction cardiomyopathy (LVNC) or “spongy myocardium” is a relatively rare primary genetic cardiomyopathy, characterized by prominent wall trabeculations and intertrabecular recesses which communicate with the ventricular cavity. It appears in isolated form or coexists with other congenital heart diseases and/or systemic abnormalities. Material and method: A 28-year-old woman was admitted with exertional dyspnoea, palpitations, non-specific chest pain and progressive fatigue on exertion. In her family history sudden cardiac-related deaths at young age are present. Cardiovascular system examination revealed tachycardia, intermittent extrabeats. The rest EKG showed sinusal tachycardia (105 bpm), negative T-waves in DII, DIII, aVF, V4-V6. Consecutive 24 hours Holter EKG monitoring revealed nonsustained ventricular tachycardia, paroxysmal atrial fibrillation, isolated ventricular extrasystoles. Echocardiography showed left ventricular systolic dysfunction (LVEF:30-35%), slight LV enlargement, normal right ventricle and small left ventricle (LV) trabeculae in the apical area. Cardiac MRI demonstrated dilated LV and the presence of the trabeculations of LV walls suggestive for non-compaction cardiomyopathy. A combined treatment for heart failure and cardiac arrhythmias was initiated with good clinical results. Patient was scheduled for an implantable cardioverter defibrillator “life-saving”. Conclusions: The symptoms of heart failure and cardiac arrhythmias should be considered important in apparently healthy young patients. Besides intensive medical treatment is indicated the implantation of an ICD “life-saving” and in advanced cases heart transplantation. Even if the electrocardiographic findings are non specific for noncompaction, a complete diagnostic evaluation is important, including sophisticated imaging techniques, a screening of first-degree relatives, and an extensive clinical, and genetic appreciation by a multidisciplinary team.
Laparoscopic Greater Curvature Plication for Morbid Obesity: Indications, Results, Perspectives
Authors: Bara T , Borz C , Suciu A , Denes M , Torok A , Borz B , Marian D 
Published: August 2015

Abstract
Morbid obesity is an important health problem of our century. It is managed by diet, lifestyle changes and medication and surgery. Weight-loss surgery is the most effective treatment for morbid obesity, producing durable weight loss, improvement or remission of comorbid conditions and longer life. Bariatric surgery provides the best results in up to 75% of cases of severe obesity and obesity comorbidities. In the United States, over 200 000 patients benefit every year from bariatric procedures. That means there is a continuous evolving of the bariatric surgery. Bariatric surgery is metabolic surgery because it resolves or alleviates Type2 Diabetes, hyperlipidemia and hypertension. The most employed bariatric operations are Roux -en- Y gastric by-pass, adjustable gastric banding, biliopancreatic diversion and sleeve gastrectomy, each of them having shortage of long term results and safety. In the last eight years was introduced a new bariatric procedure, the gastric plication, in an effort to obtain similar weight loss with lesser complications and costs. We present our initial experience with 30 morbid obese patients who undergone laparoscopic gastric plication in our institution. The mean % Excess Weight Loss was 50% at 6 month and 65% at 12 month with important alleviation of comorbidities. The complications rate was 6.6% for major complications (but only in the first 6 cases) and 10% for minor complications.
Sense of smell and volatile aroma compounds and their role in the evaluation of the quality of products of animal origin – a review
Authors: Gąsior Robert , Wojtycza Krzysztof 
Published: August 2015

Abstract
The aim of this article is to examine how the sense of smell and aroma compounds influence the quality of food of animal origin, and to review gas chromatography-olfactometry methods of volatile substances analysis that can help to promote regional animal products. Smell and smell-inducing compounds play an important role in human life. People have made use of aromatic herbs and spices for ages. The classification of smells was developed by, among others, Aristotle, Linnaeus, Zwaardemaker, as well as Amoore, the creator of the stereochemical theory of olfaction. Smell is also of exceptional importance in a consumer’s evaluation of food quality. Achievements in the area of chromatography, mass spectrometry and olfactometry have contributed to the development of tests for the content of volatile compounds in food materials, e.g. milk, cheese or meat. Analysis of these compounds is more and more often applied to regional products that are commonly characterised by different olfactory properties. The study’s results of raw meat of different animal species show that nutria meat and mutton differ the most from others. Apart from genetic factors, meat composition depends on feeding method, quality and type of fodder, method of cutting, meat seasoning, pH and temperature of processing. Chromatographic and olfactometric tests on animal products, in conjunction with chemometrics, can contribute to the development of reliable characteristics and help to identify the products’ origin. These tests are becoming an inseparable part of the policy of promotion of regional products with specific taste and olfactory properties.
Influence of Oregano Essential Oil (Oeo) on Prevalence and Oocyst Shedding Dynamics of Naturally Acquired Eimeria Spp. Infection in Replacement Dairy Heifers
Authors: Grandi Giulio , Kramer Laura Helen , Quarantelli Afro , Righi Federico 
Published: August 2015

Abstract
The administration of oregano essential oil (OEO) was tested in a dairy farm (Piacenza, Italy) with a history of sporadic cases of clinical coccidiosis in order to evaluate its influence on infection prevalence and oocyst excretion pattern in calves and replacement dairy heifers. Animals were recruited at 1 month of age and allocated to two groups of 25 animals, experimental (E) and control (C). OEO was added at a concentration of 100 ppm to the feedstuff administered to group E. Prevalence of infection and the number of oocysts per gram of feces (OPG) was evaluated monthly from 30 days of life (d30) till d150, with one extra sampling at d45, for a total of 6 time points. No significant differences were observed regarding the prevalence of infection between the two groups (83% general prevalence, 93% in group E, 72% in group C) although slightly higher prevalence was seen for Eimeria bovis and Eimeria alabamensis in group C, while the opposite was seen for Eimeria zuernii. OEO addition to the diet did not have any effect on the course of coccidial infections in calves and replacement dairy heifers. Other variables, in particular data on growth and production, should likely be tested before ruling out the potential role of OEO, alone or in combination with other control measures, to reduce infection pressure and therefore to improve animal welfare and performance.
The Effect of Varying Distances from the Wind Turbine on Meat Quality of Growing-Finishing Pigs
Authors: Karwowska Małgorzata , Mikołajczak Jan , Dolatowski Zbigniew Józef , Borowski Sylwester 
Published: August 2015

Abstract
This study was conducted to assess the effect of rearing pigs at three different distances from a wind turbine (50, 500 and 1000 m) on the physicochemical properties and fatty acid composition of loin and neck muscles. The experiment was carried out on 30 growing-finishing pigs, derived from Polish Landrace × Polish Large White sows mated to a Duroc × Pietrain boar. The results obtained during the noise measurement showed that the highest level of noise in the audible and infrasound range was recorded 50 m from the wind turbine. Rearing pigs in close proximity to the wind turbine (50 m) resulted in decreased muscle pH, total heme pigments and heme iron as well as reduced content of C18:3n-3 fatty acid in the loin muscle. Loins of pigs reared 50 m from the wind turbine were characterized by significantly lower iron content (6.7 ppm g-1) compared to the loins of pigs reared 500 and 1000 m from the wind turbine (10.0-10.5 ppm g-1). The concentration of α-linolenic acid (C18:3n-3) in loin and neck muscles decreased as the distance from the wind turbine increased. Avoiding noise-induced stress is important not only for maintaining meat quality but also for improving animal welfare.
Maternal and fetal lipid metabolism under normal and gestational diabetic conditions
Authors: Herrera Emilio , Desoye Gernot 
Published: August 2015

Abstract
Maternal lipids are strong determinants of fetal fat mass. Here we review the overall lipid metabolism in normal and gestational diabetes mellitus (GDM) pregnancies. During early pregnancy, the increase in maternal fat depots is facilitated by insulin, followed by increased adipose tissue breakdown and subsequent hypertriglyceridemia, mainly as a result of insulin resistance (IR) and estrogen effects. The response to diabetes is variable as a result of greater IR but decreased estrogen levels. The vast majority of fatty acids (FAs) in the maternal circulation are esterified and associated with lipoproteins. These are taken up by the placenta and hydrolyzed by lipases. The released FAs enter various metabolic routes and are released into fetal circulation. Although these determinants are modified in maternal GDM, the fetus does not seem to receive more FAs than in non-GDM pregnancies. Long-chain polyunsaturated FAs are essential for fetal development and are obtained from the mother. Mitochondrial FA oxidation occurs in fetal tissue and in placenta and contributes to energy production. Fetal fat accretion during the last weeks of gestation occurs very rapidly and is sustained not only by FAs crossing the placenta, but also by fetal lipogenesis. Fetal hyperinsulinemia in GDM mothers promotes excess accretion of adipose tissue, which gives rise to altered adipocytokine profiles. Fetal lipoproteins are low at birth, but the GDM effects are unclear. The increase in body fat in neonates of GDM women is a risk factor for obesity in early childhood and later life.
Jobelyn® exhibited anti-inflammatory, antioxidant, and membrane-stabilizing activities in experimental models
Authors: Umukoro Solomon , Oluwole Oluwafemi Gabriel , Eduviere Anthony T. , Adrian Omogbiya Itievere , Ajayi Abayomi M. 
Published: August 2015

Abstract

Background: Jobelyn® (JB) is an African sorghum-based food supplement claimed to be efficacious for the treatment of rheumatoid arthritis (RA). Although in vitro studies confirmed its anti-inflammatory property, no study had shown the effect of JB using in vivo animal models of inflammation. Thus, its effects on acute and chronic inflammation in rats were evaluated in this study. Its effect on rat red blood cell (RBC) lysis was also assessed.

Methods: Acute inflammation was induced with intraplanter injection of carrageenan and increase in rat paw volume was measured using plethysmometer. The volume of fluid exudates, number of leukocytes, concentrations of malondialdehyde (MDA), and glutathione (GSH) in the fluid were measured on day 5 after induction of chronic inflammation with carrageenan in the granuloma air pouch model. RBC lysis induced by hypotonic medium as determined by release of hemoglobin was measured spectrophotometerically.

Results: JB (50–200 mg/kg) given orally produced a significant inhibition of acute inflammation induced by carrageenan in rats. It reduced the volume and number of leukocytes in inflammatory fluid in the granuloma air pouch model of chronic inflammation. It further decreased the levels of MDA in the fluid suggesting antioxidant property. JB elevated the concentrations of GSH in inflammatory exudates indicating free radical scavenging activity. It also significantly inhibited RBC lysis caused by hypotonic medium, suggesting membrane-stabilizing property.

Conclusions: JB has in vivo anti-inflammatory activity, which may be related to its antioxidant and membrane-stabilizing properties, supporting its use for the treatment of arthritic disorder.