bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multivessel Disease As A Prognostic Factor For Mortality In STEMI Patients
Authors: Karamfiloff Kiril K. , Stoykova Zhivka D. , Georeva Petya G. , Trendafilova Diana K. , Jorgova Julia B. 
Published: December 2015

Summary
The main objective of this analysis was to define the influence of multivessel disease involvement compared to single vessel disease on mortality rates in STEMI patients. The retrospective study included 549 patients, hospitalized with STEMI in St. Ekaterina University Hospital (age - 62.66±12.56; women - 31.3%) from 01.06.2008 to 30.06.2011. One-vessel disease was found in 232 patients (44%) as compared to two-vessel disease in 165 patients - 31% and multivessel disease in 130 patients - 25%. There was LM stenosis (>30) in 11 patients (2%); ostial lesion in 33 patients (6.3%); presence of Ca in 37 patients (7%). A stent was implanted in 484 patients (91.8%), and GP IIb/IIIa was used in 400 patients (75.9%). There was significant increase in mortality rates in patients with multivessel disease: 15.6% - 46 patients, compared to one-vessel disease - 6.5% (15 patients) (p<=0.01). Both early (30 days) and late mortality (one year) rates were higher in the multivessel group (6.8% vs. 2.6%, p<=0.05 and 10.2% vs. 3.9% (p<=0.0510), respectively. Multivessel disease is associated with higher mortality rates in STEMI patients, which may further alter clinical course and decision making.
Effects Of Glucose And Bilirubin On The Kinetic Jaffe's And The Enzymatic Methods For Serum Creatinine Assay
Authors: Gencheva Irena I. , Ruseva Adelaida L. 
Published: December 2015

Summary
The enzymatic method for the determination of serum creatinine is accepted as one of the most accurate methods in a clinical laboratory. This method was used on a biochemistry auto analyzer (Cobas Integra 400) to determine serum creatinine at the laboratory of University Hospital – Pleven. The characteristics and reliability of this enzymatic method for creatinine were compared with the Jaffe kinetic method. Effects of some interfering substances like bilirubin and glucose on the Jaffe kinetic method and the enzymatic method were compared. Glucose and bilirubin inhibit the reaction between creatinine and alkaline picrate. Glucose slowly reduces picric acid to picrate, while the bilirubin present in a sample is oxidized to biliverdin under alkaline conditions. This leads to a decrease in absorbance at 520 nm. We measured creatinine in serum samples with the enzymatic method and the Jaffe kinetic method in samples divided into four groups: group I –samples without bilirubin and glucose ; group II –samples with high level of glucose; group III - samples with high level of bilirubin, group IV – all samples. For Group I, the correlation coefficient obtained by comparing the enzymatic creatinine method and Jaffe's kinetic method was R = 0.983. There was a very good agreement between the two methods in terms of correlation coefficient even in the samples with high levels of glucose or bilirubin.
Perioperative Outcomes Of Laparoscopic Hysterectomy: Comparison With Abdominal, Vaginal, And Robot-Assisted Surgical Approaches
Authors: Tomov Slavcho T. , Gortchev Grigor A. , Tantchev Latchesar S. , Dimitrov Todor I. , Tzvetkov Chavdar A. , Popovska Savelina L. 
Published: December 2015

Summary
Selection of an appropriate surgical method for hysterectomy in an individual patient is currently an issue that remains open and debatable. This study aimed to analyze perioperative outcomes in gynecologic patients who underwent laparoscopic hysterectomy at a single institution during a 6-year period and to compare the data for simple hysterectomy patients treated with different surgical approaches. The study included a retrospective analysis of demographics, pre- and post-operative characteristics of 1,023 patients, operated on using four types of simple hysterectomy approaches: 635 laparoscopic hysterectomies (62.1%), 289 total abdominal hysterectomies (28.3%), 45 total vaginal hysterectomies (4.4%) and 54 robotic-assisted hysterectomies (5.3%). For the laparoscopic hysterectomy group, the mean operative time was shorter as compared to the abdominal and vaginal hysterectomy groups (p<0.05), as well as a significantly shorter hospital length-of-stay when compared to the abdominal, robotic or vaginal hysterectomy groups (p<0.05). Regression analysis revealed significant linear correlation between operative time and body-mass index of laparoscopic hysterectomy patients (R2 =0.008; p=0.026). Complications emergence and hemotransfusion often prolonged the mean operative time significantly by 17.8 min (p=0.002) and 15.5 min, respectively (p<0.001). The rate of major complications was significantly higher in the laparoscopic vs. abdominal groups (p<0.05). Clinical outcomes in patients operated on with laparoscopic hysterectomy were better than in those operated with total abdominal and vaginal hysterectomy in terms of operative time and hospital length-of-stay. Prospective randomized multi-center studies would be desirable to further define the place of the modern minimally invasive hysterectomy approaches.
Analysis Of Labour Inspectors’ Temporary Incapacity For Work
Authors: Georeva Petya G. , Kuneva Tanya P. , Karamfiloff Kiril K. , Stoykova Jivka D. 
Published: December 2015

Summary
It is known that increased morbidity with temporary incapacity for work (MTIW) is related to stress level and psychosocial factors at work. Practices for stress management, conflict avoidance and optimization of working conditions are known to reduce MTIW level. The aim of the present study was to analyze MTIW and propose measures to optimize and reduce strain at work. The study covered MTIW in labour inspectors, a total of 334 people, men and women aged from 24 to 69. The evaluation was based on 11 of the generally accepted indices. MTIW structure was analyzed. MTIW was rated as high according to case frequency and as very high according to day frequency. The average duration of a TI case was 12.63, and the relative share of people who were frequently taken ill for a long period was 12.81. In the ITI structure, diseases of the respiratory system (42.0%) ranked first, followed by diseases of the nervous system (18.8%), the digestive system (9.9%), CVS (8.3%) and MSS (7.2%). These 5 groups of diseases covered 86.2% of all diagnoses. The remaining 7 groups of diseases covered less than 14% of the diagnoses. The group of people most frequently taken ill for long periods included 28 inspectors who had used 42.5% of the total number of days. Two inspectors with 140 days of absence from work were cases of TI resulting from severe stress and adaptation disorder. Measures were proposed regarding the reduction of strain at work and the risk of stress.
Comparative Analysis And Evaluation Of Occupational Stress In Control Activities
Authors: Georeva Petya G. , Kuneva Tanya P. , Bakova Desislava K. , Karamfiloff Kiril K. , Stoykova Jivka D. 
Published: December 2015

Summary
Psychosocial factors (PSF) are leading among the new risks and modern challenges in providing safe and healthy conditions at work. Due to the high mental strain, inspectors are at highest risk for stress at work. The aim of the present study was to make a comparative analysis of PSFs in control activities, rate them and investigate subjective perception of stress at work. Two exhaustive cross-sectional studies were conducted consecutively, involving 338 and 355 inspectors, respectively, working at two organizations with control activities. The inspectors were men and women aged from 24 to 70. The statistical processing of data utilized the SPSS software version 17, at a significance level of p<0.05. A number of common characteristics were found in the activities, the composition and structure of different groups of government staff: the number of women was greater (58% и 62.6%), with people over 40 years of age prevailing (67.3% и 70.9%), and the group with specialized work experience of 6 to 10 years comprised the greatest number of people. We found reliable differences in the answers concerning task requirements and activity organization. Rating PSF, one of the groups of inspectors placed “insufficient time to perform the check-up” in the first place, whereas the other one reported “conflicts while performing the check-up”. PSFs exert an influence on the cognitive functions of inspectors, change their behaviour and emotional reactions and result in more frequent complaints of health deterioration. We found difference in the subjective stress perception depending on gender, age and duration of work experience as an inspector.
The Presence Of Non-Drinking Parent Behavioral Model In A Family Prevents Adolescents From Social Alcohol
Authors: Chamova Galya D. , Sarov Georgi M. 
Published: December 2015

Summary
Parental alcohol drinking is associated with an increased risk of alcohol consumption in adolescents and social drinking is often the first step to regular alcohol consumption. The purpose of the study was to investigate the association between social drinking in adolescence and parental alcohol consumption. We conducted a survey, using a self-completed questionnaire about alcohol drinking habits. Of 903 students (aged 15-19), 279 (30.9%) were found to be abstainers (NDA) and 455 (50.39%) were social drinkers (SDA). These two groups were statistically compared for drinking patterns of their parents. It was found that SDA are fourfold less likely than NDA to have two alcohol abstaining parents (OR=0.26, 95%CI =0.19-0.37) and fourfold more likely to have two alcohol drinking parents (OR=3.89, 95%CI =2.77-5.45). There were no significant differences between SDA and NDA regarding probability to have one abstaining and one socially drinking parent, and SDA were less likely to have one abstaining and one regularly drinking parent (OR=0.54, 0.37-0.8). The social learning theory explains well adolescent drinking patterns when there is no contradiction in parental modeling. It seems, however, that the presence of contradicting patterns of parental alcohol drinking needs another explanation. Since contradicting parental modeling prevents adolescents from social drinking, it could be considered in health prevention intervention.
A Rare Case Of A Trans-Stomal Hernia, Combined With Undiagnosed Mediastinal Lymphadenopathy In A Patient With Rectal Cancer
Authors: Tsvetanova Kameliya T. , Dimitrov Dobromir D. , Feradova Hyuliya E. , Nanev Vasil , Ivanov Tsvetomir M. , Dimitrov Todor Iv. 
Published: December 2015

Summary
Colon cancer is one of the most common malignant diseases with high grade of malignancy and mortality at high rate. Approximately one million people are diagnosed with colorectal cancer each year. Metastases affect mostly the liver, followed by the lungs. Here is a rare case of a patient with rectal cancer without disease progression or recurrence who underwent surgery due to a trans-stomal hernia, combined with high transstomal fistula of the ileum. Acute respiratory failure developed in the postoperative period and led to fatal deterioration as a result of enlarged metastatic mediastinal lymph nodes, which was very difficult to diagnose.
Bayesian optimal design of fixed knockout tournament brackets
Authors: Hennessy Jonathan , Glickman Mark 
Published: December 2015

AbstractWe present a methodology for finding globally optimal knockout tournament designs when partial information is known about the strengths of the players. Our approach involves maximizing an expected utility through a Bayesian optimal design framework. Given the prohibitive computational barriers connected with direct computation, we compute a Monte Carlo estimate of the expected utility for a fixed tournament bracket, and optimize the expected utility through simulated annealing. We demonstrate our method by optimizing the probability that the best player wins the tournament. We compare our approach to other knockout tournament designs, including brackets following the standard seeding. We also demonstrate how our approach can be applied to a variety of other utility functions, including whether the best two players meet in the final, the consistency between the number of wins and the player strengths, and whether the players are matched up according to the standard seeding.
Recording at water bodies increases the efficiency of a survey of temperate bats with stationary, automated detectors
Authors: Bruckner Alexander 
Published: December 2015

AbstractSurveying and monitoring bat populations by recording their calls with stationary detectors has become increasingly popular. This study tested the hypothesis that placing stationary detectors at water bodies yielded more species than in other habitat types in a temperate landscape (settlement, forest, open land). The number of species was significantly affected by habitat type, and sampling at water bodies yielded approximately 50% more species than in open land, the habitat type which was second in species richness. In contrast, bat calling activity was not significantly related to habitat type. With the exception of the northern bat
On Approximation Properties of a New Type of Bernstein-Durrmeyer Operators
Authors: Acar Tuncer , Aral Ali , Gupta Vijay 
Published: December 2015

Abstract
The present paper deals with a new type of Bernstein-Durrmeyer operators on mobile interval. First, we represent the operators in terms of hypergeometric series. We also establish local and global approximation results for these operators in terms of modulus of continuity. We obtain an asymptotic formula for these operators and in the last section we present better error estimation for the operators using King type approach
Structure and thermal expansion of liquid bismuth
Authors: Mudry S. , Shtablavyi I. , Liudkevych U. , Winczewski S. 
Published: December 2015

AbstractExperimental structural data for liquid Bi were used for estimation of the main structure parameters as well as the thermal expansion coefficient both in supercooled and superheated temperature ranges. It was shown that the equilibrium melt had a positive thermal expansion coefficient within a temperature range upon melting and a negative one at higher temperatures. The former was related to structure changes upon melting, whereas the latter with topologic disordering upon further heating. It was found that the superheated melt had a negative thermal expansion coefficient. The results obtained from structural data were compared with the thermal expansion coefficient calculated from the data of density for liquid Bi.
Finite element simulation and analysis of nanometal-semiconductor contacts
Authors: Eledlebi Khouloud , Ismail Mohammed , Rezeq Moh’d 
Published: December 2015

AbstractNanometal-semiconductor contacts in the sub-20-nm range have shown some deviations in electrical characteristics compared to conventional diodes. We have used a finite element simulation software to build and analyze a proposed geometrical model. We used two different theoretical approaches to study the enhancements of the electric field at the interface, and then the total current across nano-Schottky junction. The results revealed a significant tunneling current at the reverse bias for low n-doped semiconductor substrates and low current at the forward bias. However, in the case of high n-doped semiconductor substrates, the thermionic current is significant at forward biases and the current is low at the reverse bias. We have used our finite element simulation models based on both approaches to fit the existing experimental data of nano-Schottky contacts.
Graphene and carbon-based nanomaterials as highly efficient adsorbents for oils and organic solvents
Authors: Wan Shu , Bi Hengchang , Sun Litao 
Published: December 2015

AbstractThis paper provides a comprehensive review of recent progress in the synthesis and performance of graphene and carbon-based nanomaterials as efficient adsorbents for oils and organic solvents. Several advantages of these adsorbents are emphasized, including adjustable three-dimensional networks, high surface area, high chemical/thermal stability, high flexibility and elasticity, and extremely high surface hydrophobicity/ oleophilicity. Technical challenges are discussed, and future research directions are proposed.
Netz-Phytoplankton Diversity in the western and southern regions of the South China Sea
Authors: Liu Haijiao , Sun Jun 
Published: December 2015

Abstract
Based on the survey records on netz-phytoplankton (>76 μm) collected in the South China Sea (SCS) during the cruise from the 21st August to the 18th October, 2012, the species composition, biodiversity and its spatial distribution were studied. The identified 326 phytoplankton species belonged to 75 genera and 4 phyla. Thalassionema nitzschioides was the most dominant species accounting for 33.24% of the total cell abundance, followed by Bacteriastrum furcatum − 8.69%. Whereas the phytoplankton cell abundance (cells l-1) was the highest in the Zhubi Reef (1106.45 ± 2475.38), the southern SCS (396.84 ± 969.87), the western SCS (90.82 ± 144.66) and the northern SCS (66.48 ± 70.89) in order. The distribution of phytoplankton appears to be affected by the Mekong river discharge and particles derived in Sumatra and Kalimantan from biomass burning, nutrient concentrations, the South China Sea Warm Current (SCSWC). The evaluation of biodiversity indices indicated the high level of species richness, evenness and biodiversity in the survey area.
A note on the vertical distribution of momentum transport in water waves
Authors: Kołodko Jerzy , Gic-Grusza Gabriela 
Published: December 2015

Abstract
In this paper, the classical problem of horizontal waveinduced momentum transport is analyzed once again. A new analytical approach has been employed to reveal the vertical variation of this transport in the Eulerian description.
In mathematical terms, this variation is shown to have (after “smoothing out” the surface corrugation) the character of a generalized function (distribution) and is described by a classical function in the water depths and by an additional Dirac-delta-function component on the averaged free surface.
In terms of physics, the considered variation consists of two entities: (i) a continuous distribution of the mean momentum transport flux density (tensorial radiation pressure) over the entire water column, and (ii) an additional momentum transport flux concentrated on the mean free surface level (tensorial radiation surface pressure). Simple analytical formulae describing this variation have been derived.
This allowed a conventional expression to be derived, describing the depth-integrated excess of horizontal momentum flux due to the presence of waves (the so-called “radiation stress”), confirming to some extent the correctness of the whole analysis carried out.
The results obtained may be important to the ocean dynamics, especially in view of their possible application in the field of hydrodynamics of wave-dominated coastal zones.
Quantitative assessment of oral microstructural and microvascular changes in late oral radiation toxicity, using noninvasive in-vivo optical coherence tomography
Authors: Davoudi Bahar , Gasumova Dana , Bizheva Kostadinka , Dinniwell Robert , Levin Wilfred , Vitkin I. Alex 
Published: December 2015

Abstract

Background and objectives:
About half of the head and neck cancer patients treated with radiotherapy suffer from late radiation effects months to years after the treatment. The most common diagnosis and monitoring methods for such oral toxicities are based on surface examination of the oral tissue, which is subjective. Therefore, subsurface imaging and image quantification tools can be highly useful for monitoring these late effects as these approaches are more robust and objective. In this study, we demonstrate the ability of optical coherence tomography (OCT) technology and its newly developed quantitative imaging platform to reveal subsurface microstructural and microvascular changes in late oral radiation toxicity patients, not detectable by available clinical tools.

Materials and methods:
Fifteen patients exhibiting late oral radiation toxicity, and five healthy age-matched volunteers were imaged with OCT in a clinical pilot study. Image assessment methods, developed in-house, were used to extract four quantitative metrics of potential clinical importance from the acquired microstructural and microvascular oral OCT images.

Results:
The statistically significant differences in the patients compared to healthy volunteers were: lower epithelium to lamina propria thickness (indicating epithelial atrophy and/or fibrosis of lamina propria), smaller vessel diameter (indicating vessel lumen narrowing), and higher blood velocity. The observed in-vivo morphological changes correlated well with reported histology findings. No significant changes were observed in vessel tortuosity between the cohorts.

Conclusion:
The quantitative metrics extracted from the OCT images demonstrated significant microstructural and microvascular differences between the two cohorts. Potentially, OCT and its newly developed image analysis platform can be used as a noninvasive in-vivo subsurface tool for “shedding light” on late oral radiation toxicity, for example in palliative treatment efficacy monitoring.
On the intonational features of yes/no interrogatives in English and Montenegrin
Authors: Vukasojević Sandra 
Published: December 2015

AbstractThis paper outlines the results of an analysis of syntactically marked yes/no interrogatives in American English and Montenegrin from the persepctive of intonation. The analysis, based on the theoretical framework of Autosegmental-Metrical Phonology and the use of the computer software package Praat, treats issues regarding the different types of pitch contours and boundary tones at the end of yes/no interrogatives, gathered from various American and Montenegrin TV talk shows. Particularly, it focuses on specific intonational constituents, which indicate and clarify the alternative meanings of these questions. Having in mind the very nature of TV talk shows, which are seen as a part of a semi-institutionalized discourse, we start from the assumption that one type of intonation contour will be the prevailing one in yes/no interrogatives in both languages. Furthermore, all melodic deviations within these structures will influence and modify their basic meaning. The findings partially confirm our hypothesis, indicating a difference in the terminal contour between the two languages.
Proton induced nuclear reactions on natural antimony up to 17 MeV
Authors: Elbinawi Alaa , Al-abyad Mogahed , Abd-Elmageed Karima E. , Hassan Khaled F. , Ditroi Ferenc 
Published: December 2015

Abstract
The activation cross sections of proton induced reactions on
natSb target leading to the formation of the radioisotopes
121m,g,123mTe were measured. The experimental excitation
functions were compared with the theoretical model calculations using the
codes EMPIRE-3.1 and TALYS-1.4. The integral yields of the three radionuclides
were calculated and the possibility of their production is discussed.