bluuebunny/crossref_metadata_2025_split huggingface dataset:
Implantation of Biventricular Cardiac Devices Using a Double Venous Approach — An Alternative Implantation Technique
Authors: Șoșdean Raluca , Pescariu S , Enache B , Macarie Ri , Marca Raluca 
Published: May 2014

Abstract
Background: A standard technique regarding venous approach for implantation of biventricular cardiac electrical devices used for cardiac resynchronization therapy implementation has not yet been established. We analyzed the safety and efficiency of implanting these devices using a double venous approach (cephalic and subclavian) by comparing it with the simple approaches, in order to overcome some of their inconvenients.
Materials and methods: We retrospectively analyzed all 228 resynchronization patients implanted at the Timișoara Institute of Cardiovascular Medicine between January 1st, 2000 and January 1st, 2013. The 204 patients successfully implanted with biventricular pacemakers or defibrillators were divided according to the implantation techniques, and compared by complication rates and values of acute stimulationdetection thresholds. Group A featured a subclavian approach (48 patients), group B a cephalic approach (81 patients) and group C a double venous approach (76 patients).
Results: Adjusting for age, sex and device type there is no evidence in the data that complication rates are significantly different when using the different techniques: 6 complications (12.5%) in group A, 8 (9.87%) in group B and 5 (6.75%) in group C (p = 0.51). A slight downward trend was observed by using double venous approach. Values of acute stimulation-detection thresholds had no statistically significant differences neither (p = 0.36). Cephalic vein was of high quality in 59.8% of cases.
Conclusions: Subclavian and cephalic double venous approach implantation technique for biventricular devices proved to be feasible and at least as safe as single venous approach using subclavian or cephalic vein alone, and it can be used as a first resort technique.
Augmentation Strategies for Patients with Major Depressive Disorder with an Inadequate Response to Antidepressant Monotherapy
Authors: Moica Th , Gabos Grecu I , Gabos Grecu Marieta , Ferencz Melinda , Buicu Elena Gabriela , Sălcudean Andreea , Gabos Grecu C 
Published: May 2014

Abstract
Introduction: Major depressive disorder is a chronic and debilitating disease characterized by a wide range of emotional and physical symptoms that coexist during a depressive episode and may reoccur at some point during the progression of the disease for the majority of patients. The purpose of the study was to investigate psychiatrists’ experience regarding the response to antidepressive treatment and their options regarding augmentation strategies in depression with incomplete response to antidepressant monotherapy.
Method: We applied an 18-item questionnaire containing multiple choice questions to adult psychiatrists working in ambulatories, hospitals or mental health centers.
Results: Fourty-two psychiatrists have agreed to answer the questionnaire. The majority of them were psychiatry specialists, between 35 and 49 years of age, working in an outpatient unit. For the majority of doctors, SSRIs (Serotonin Reuptake Inhibitors) proved to be the first line treatment both for the first depressive episode and for recurrent depression, followed by SNRI (Serotonin and Noradrenalin Reuptake Inhibitors). Regarding the duration of maintenance treatment for the patients who achieved complete remission after the first episode of depression, the results showed a wide spectrum from 4 to 9 months.
Conclusions: Incomplete response to antidepressive monotherapy is very frequent both for the first depressive episode and for recurrent depression. Given the pharmacological profile that some atypical antipsychotic have, augmentation with atypical antipsychotics in patients with inadequate response to antidepressant monotherapy is a useful therapeutic strategy that should be considered.
MODELING ATMOSPHERE COMPOSITION AND DETERMINING EXPLOSIBILITY IN A SEALED COAL MINE VOLUME
Authors: Cheng Jianwei , Luo Yi 
Published: May 2014

Abstract
Explosions originated from or around the sealed areas in underground coal mines present a serious safety threat. The explosibility of the mine atmosphere depends on the composition of oxygen, combustible and inert gases. In additional, the composition in the inaccessible sealed areas change with time under various factors, such as gases emissions, air leakage, inert gases injected, etc. In order to improve mine safety, in this paper, a mathematical model based on the control volume approach to simulate the atmosphere compositions is developed, and the expanded Coward explosibility triangle diagram is used to assess the mine gas explosion risk. A computer program is developed to carry out the required computations and to display the results. In addition, the USBM explosibility diagram is also included in the program to serve as a double check.
SPECIFIC TYPES OF COAL MACERALS FROM ORZESZE AND RUDA BEDS FROM ”PNIÓWEK” COAL MINE (UPPER SILESIAN COAL BASIN – POLAND) AS A MANIFESTATION OF THERMAL METAMORPHISM
Authors: Adamczyk Zdzisław , Komorek Joanna , Lewandowska Małgorzata 
Published: May 2014

Abstract
Subject of the research were coal samples from the seams of Orzesze and Ruda beds from “Pniówek” coal mine. All samples represent methabituminous coal B, which present high vitrinite content (V mmf > 60%). Optical character of vitrinite from all analyzed coal samples is biaxial negative and it is characterized by low differentiation of bireflectance.
The experiments have shown that the coal rank of investigated samples is generally decreasing with increasing both depth of coal seams and the distance between sampling point and the Carboniferous roof. It may suggests inversion of coalification.
Specific types of macerals, typical for thermally metamorphosed coals have been found for all analysed coal samples.
It was found, presence of such components like: fluorescing bituminous substance (FBS) filling of cellular spaces in semifusinite, fusinite, and funginite; pseudomorphs after megaspores exhibiting strong bireflectance, and anisotropic semifusinite. Petrographic components with a structure similar to structure of coke and pyrolytic carbon were observed rarely. Presence of colotelinite grains which are visible darker, impregnated with bituminous substance and exhibiting weak fluorescence may be related with influence of temperature on coal. Carbonates occur as filling of cellular spaces in semifusinite, in examined coal samples and there are the effect of thermal alteration of coal.
THE EFFECT OF TEMPERATURE OF ROCKS ON MICROCLIMATIC CONDITIONS IN LONG GATE ROADS AND GALLERIES IN COAL MINES
Authors: Cygankiewicz Janusz , Knechtel Józef 
Published: May 2014

Abstract
The aim of this study was to examine the effect of the temperature of surrounding rocks on enthalpy and temperature of air flowing along several model mine workings. Long workings surrounded by non- -coal rocks as well longwall gates surrounded by coal were taken into consideration. Computer-aided simulation methods were used during the study. At greater depths the amount of moisture transferred into a mine working from the rock mass is two orders of magnitude smaller than the moisture that comes from external (technological) sources, mainly from coal extraction-related processes, therefore in the equation describing temperature changes only the terms representing the flux of heat from rocks were included. The model workings, for calculation purposes, were divided into sections, 50 m in length each. For each of the sections temperature of its ribs and temperature and stream of enthalpy of air flowing along it were calculated with the use of the finite differences method. For workings surrounded by non-coal rocks two variant calculations were carried out, namely with or without technological sources of heat. For coal surrounded workings (longwall gates) a new method for determination of heat from coal oxidation was developed, based on the findings by Cygankiewicz J. (2012a, 2012b). Using the results of a study by J.J. Drzewiecki and Smolka (1994), the effects of rock mass fracturing on transfer of heat into the air stream flowing along a working were taken into account.
Identification of friction and heat partition model at the tool-chip-workpiece interfaces in dry cutting of an inconel 718 alloy with cbn and coated carbide tools
Authors: Zemzemi F. , Rech J. , Salem W. Ben , Dogui A. , Kapsa Ph. 
Published: May 2014

Abstract
This paper aims at characterizing the frictional behaviour at the cutting tool-workmaterial interface during the dry machining of a Inconel 718 in its aged state with various coated carbide tools and c-BN tools. A specially designed open tribometer has been used to characterize friction coefficient, heat partition coefficient under extreme conditions corresponding to the ones occurring in cutting. The tribometer provides the evolution of the apparent friction coefficient and of the heat partition coefficient for a large range of sliding velocity and contact pressure. It has been shown that friction coefficient as well as heat partition coefficient decrease with sliding velocity or contact pressure. A threshold effect of the contact pressure has been highlighted. On the contrary, any sensitivity to coatings deposited on carbide has been observed, whereas c-BN leads to very low friction coefficients.
Investigation of technological effects of ball burnishing after cryogenic turning of hard steel
Authors: Żak Krzysztof , Grzesik Wit 
Published: May 2014

Abstract
This paper presents investigations of a sequential machining process which incorporates CBN hard turning with cryogenic pre-cooling of the workpiece (CHT) and ball burnishing (BB). The main goal of this study was to select machining conditions enhancing the quality of parts machined by hard turning including the surface roughness Ra of about 0.2 mm, good bearing properties and reducing the white layer. The obtained technological effects were characterized in terms of surface roughness, surface texture, microstructure alterations and micro-hardness distribution.
The effect of parity and date of service on the reproductive performance of Polish Large White × Polish Landrace (PLW × PL) crossbred sows
Authors: Knecht Damian , Duziński Kamil 
Published: May 2014

Abstract The aim of this study was to demonstrate the influence of the month of insemination on the reproductive performance of crossbred sows in moderate climates. The research material consisted of 309 primiparous and 625 multiparous (PLW×PL) sows kept on an industrial-scale farm. Analysis included 2457 litters obtained during a five-year period from 2006 to 2011. Statistically, the lowest number of piglets born alive and weaned was observed as a result of summer month insemination (July, August, September) compared to the winter months (February, March) (P≤0.01 and P≤0.05). Inseminations in the first four months of the year resulted in a higher number of piglets born alive in second and following parities (P≤0.01). Statistically significant differences in litter size due to the month of insemination were observed for sows in parities 4 and 5-11 (P≤0.01 and P≤0.05). The shortest farrowing interval was demonstrated for sows inseminated in November, the longest in January, March (P≤0.01) and April, July (P≤0.05). The results indicate that the insemination month of the sow may affect some reproductive parameters.
Effect of increased content of animal protein in feed mixtures based on extruded rice on rearing performance and blood parameters of piglets
Authors: Czech Anna , Pastuszak Jerzy , Kusior Grażyna 
Published: May 2014

Abstract The aim of this study was to compare the effects of three feed mixtures based on various feed components, including extruded rice, and differing in the source and level of animal protein on rearing performance and biochemical and haematological blood parameters of piglets in the peri-weaning period. The experiments covered 96 piglets, crosses of PIC hybrid sows with a P76 boar that were divided into three experimental groups. The piglets from group I received a prestarter diet based on extruded wheat and protein of both plant and animal origin, whilst those from groups II and III were fed prestarter diets containing: group II - extruded rice (protein as in group I), and group III - extruded rice with protein components of exclusively animal origin. The addition of extruded rice and the increased content of animal protein in feed mixture improved the rearing performance of piglets (higher body weight gains and more efficient feed conversion ratio). The feeding of piglets with the diets containing extruded rice and increased animal protein components (III group) was also observed to stimulate lipid metabolism, which resulted in reduced plasma levels of LDL-cholesterol and in increased percentage of HDL-cholesterol, which contributed to increased blood levels of urea compared to the other experimental groups.
Effect of Protein Concentrate Supplement on the Qualitative and Quantitative Parameters of Milk from Dairy Cows in Organic Farming
Authors: Horký Pavel 
Published: May 2014

Abstract
In our experiment, we studied the effects of protein concentrate addition on the qualitative and quantitative composition of milk in organically farmed dairy cows. A total number of 40 Holstein cows were divided into two groups. Live weight of dairy cows was around 625±25 kg. Average production efficiency of animals was 7600±50 kg milk for the lactation period. Animals of both groups received identical basal feed ration. The first experimental group of cows (n=20) received in the feed ration a protein concentrate from organic production (soybean cake 60%, sunflower cake 20%, linseed cake 20%) at 1 kg per head and day. The second group served as a control (n=20) without the addition of protein concentrate. The experiment lasted 30 days. The goal of the experiment was to investigate whether the addition of protein concentrate can affect individual milk components. The measured values show that the experimental group of dairy cows with the addition of protein concentrate exhibited increases in fat content by 7.4% (P≤0.05), in urea content by 83.1% (P≤0.001) and in citric acid content by 18.6% (P≤0.01), and decreases in free fatty acids by 54.9% (P≤0.001), in ECM by 5.5% (P≤0.05) and in FCM by 6.1% (P≤0.05). The control group of cows exhibited the citric acid content in milk increased by 20.0% (P≤0.05). The results indicate that the protein concentrate composed of soybean, sunflower and linseed cakes can affect the composition of milk from organically farmed dairy cows
Comparison of Two Methods of Housing Primiparous Cows
Authors: Winnicki Stanisław , Jugowar Jerzy Lech , Sobek Zbigniew 
Published: May 2014

Abstract
We researched the influence of two methods of housing primiparous cows on meeting estimated energy requirements. In herd A primiparous cows were kept in a separate technological group during the whole lactation period, whereas in herd B they were kept in technological groups together with multigravid cows. The whole herd A consisted of 400 cows, where the average annual yield was 10,200 kg of milk per cow. Herd B consisted of 250 cows, where the average annual yield was 8,500 kg of milk per cow. In 2010 and 2011 there were 200 primiparous cows in herd A, whereas in herd B there were 165 primiparous cows. The milk yield for 100 and 305 days of lactation was analysed. Meeting the cows’ demand for energy was determined on the basis of the percentage of protein in milk. In both herds primiparous cows were divided into milk yield classes for 100 days of lactation. Both the trend and the amount of variation in the content of protein in milk were found to be identical in both herds. The content of protein in milk increased as the milk yield decreased. This regularity could be observed at both lactation stages under analysis and the differences between the classes were statistically confirmed. During the first 100 days of lactation the estimated energy deficit comprised a much larger percentage of the cows than in the 305-day lactation period. The system of maintenance of primiparous cows (separately or together with multigravid cows) was not found to influence the milk yield or the estimated demand for energy
Correlations between the Harris Hip Score and the Visual Analogue Scale in the assessment of total hip replacement in hip dysplasia
Authors: S.G Zuh , Ö. Nagy , Ancuța Zazgyva , O.M. Russu , I. Gergely , T.S. Pop 
Published: May 2014

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.
Postpartum Hemorrhage after Cesarean Delivery - Causes and Management Statistics of „Prof. Dr. Panait Sîrbu „ Hospital- Bucharest
Authors: D.P. Pană , Carmen Georgescu , M. Mitran , Loredana Mitran 
Published: May 2014

ABSTRACT
Postpartum hemorrhages represent a major cause of maternal mortality everywhere in the world and in Romania obstetrical hemorrhages are directly incriminated in 47.85% from the cases reported between 1975 -2010. This retrospective study over a period of five years (2008 - 2012) includes the clinical-statistical analysis of postpartum hemorrhages (PPH) registered in “Prof. Dr. Panait Sîrbu” Clinical Hospital of Obstetrics and Gynecology in Bucharest. During the period under analysis there were 20204 births, out of which 13012 were vaginal and 7192 by caesarean section. There were 853 cases of postpartum hemorrhage with significant clinical manifestations, which required medical management, 4.22% of all births. In 459 cases there were reported hemorrhagic complications after caesarean section (6.368% of caesarean sections), representing 53.81% of postpartum hemorrhage. The severity of intra-operative and post-cesarean bleeding is due to its association to anesthetic risk, which is more important in cesarean, as well as to the associated pathology that indicated the caesarean section in the first place
Physicochemical and Microbiological Characteristics of Some Samples of Honey Produced by Beekeepers In Algeria
Authors: Adjlane Noureddine , Haddad Nizar , Laid Ameur Karima , Kesraoui Saida , Moussaoui Djamila 
Published: May 2014

Abstract
This study aims to evaluate the physicochemical and microbiological quality of 11 samples of locally produced honey harvested from bee colonies across different regions of Algeria. Honeys analyzed are characterized by their different floral origins. Want germs are total aerobic mesophilic flora, total coliforms, anaerobic bacteria Sulfito-Drive (clostridium), yeasts and moulds. Water content, pH, the concentration of hydroxymethylfurfural and sucrose content were also measured. For the physicochemical properties, most of the samples meet the requirements of Codex Alimentarius. Microbiological results showed that there is heterogeneity in the load of microorganisms sampled. Honeys have a low microbial profile. Total coliforms and clostridium were not detected in any sample. For counting the total aerobic mesophilic flora (TAMF), two local and imported samples have a concentration greater than the standard TAMF. Yeasts and moulds were also present but at low levels, and figures in all but three samples were below the norm.
Comparative Analysis of Whinnies of Czech Warmblood and Thoroughbred Horses
Authors: Holeckova Stepanka , Policht Richard 
Published: May 2014

Abstract
Loud acoustic signals of mammals may contain information about their progenitors. There is a question whether such phenomenon is possible to expect in domestic animal breeds as well, since the time of breed establishment has been a rather long one. Therefore we tested whether a significant morphological distinction of a newly established horse breed and its important founding contributor differed in their vocalization. We analyzed 304 whinnies of 35 individual horses (197 whinnies of 23 individuals belonging to Czech Warmblood and 107 calls of 12 Thoroughbreds). Despite of the fact that the two breeds differed significantly in most of their morphological measurements (height at withers, thoracic perimeter, cannon bone perimeter, and body weight), they did not differ in any of the measured acoustic parameters (both frequency and temporal ones). Our results indicate that morphological distinction of Thoroughbred and Czech Warmblood was not accompanied by distinct vocalization.
Resource Productivity under Yam Based Crop Mixture in Crude and Non-Crude Oil Producing Communities of Imo State, Nigeria
Authors: Nwosu Canice Sonny , Chidebelu Sonny Angus Nnaemeka Dixie 
Published: May 2014

Abstract
A study on resource productivity under yam based crop mixture (YBCM) in crude and non-crude oil communities was conducted in Imo State, Nigeria. The study assessed food crops’ outputs, evaluated costs and returns, and determined the allocative efficiency of resource use under YBCM system in crude and non-crude oil producing communities. Stratified random sampling technique was adopted in selection of respondents. Primary data were obtained using a set of questionnaire on 50 YBCM farmers each from crude and non-crude oil communities. Data were analyzed using percentages, gross margin and net profit analysis, multiple regressions, t-values, and gross returns/total costs ratio. Output levels of the food crop components in YBCM system in non-crude oil producing communities were statistically and significantly higher than those of the crude oil producing communities. This agreed with results of studies that showed reduction effects of gas flaring on food crop yields in the areas. There was higher profitability in YBCM enterprise in non-crude oil producing communities than in crude oil producing communities. However, the two critical resources in farming, land and labour, the YBCM farmers in crude oil producing communities allocated these resources better than the YBCM farmers in non-crude oil producing communities. Based on the study findings the Federal and State Governments, and other oil industry stakeholders should formulate appropriate policies, programmes and conduct detailed ecological research studies that will lead to higher farm output by YBCM farmers in crude oil producing areas.