bluuebunny/crossref_metadata_2025_split huggingface dataset:
Landmark Versus Ultrasound-Guided Subclavian Central Venous Catheterization with a Combined Short and Long Axis Approach in an Intensive Care Setting
Authors: Sazdov Darko , Srceva Marija Jovanovski , Todorova Zorka Nikolova 
Published: May 2018

Abstract
Introduction. Central venous catheterization of the subclavian vein can be achieved with a landmark and an ultrasound-guided method. Using ultrasound the vein can be catheterized with a long axis in plane or a short axis out of plane approach and a combined approach. The aim of the study was to compare the success, average number of attempts and mechanical complication rate between the landmark and the combined ultrasound-guided method.
Methods. A total of 162 adult patients from the Intensive Care Unit at Clinical Hospital Acibadem-Sistina, Skopje were included in this prospective study. Patients randomized in the examined group (n=71) were catheterized with real-time ultrasound guidance with a combined short axis out of plane and long axis in plane method. Patients randomized in the control group (n=91) were catheterized with the landmark method. Subclavian vein was catheterized in both groups. Overall success, success on first attempt, number of attempts and complications at the moment of catheterization were the main outcome measures.
Results. Catheterization using the landmark method was successful in 94.5% of patients, 65.9% of which during the first attempt. Cannulation using real-time ultrasound guidance was successful in all patients with a first pas success of 83.1%. The complication rate in the ultrasound group was 2.82% and 16.5% in the landmark group (p=0.004404).
Conclusion. Real-time ultrasound guidance with a combined short axis out of plane and long axis in plane approach improves success, decreases number of attempts, and reduces mechanical complications rate.
Patient-Controlled Analgesia (PCA) with Remifentanil Versus Intermittent Epidural Boluses for Labor Analgesia
Authors: Karadjova Dafina , Shosholcheva Mirjana , Sivevski Atanas , Ivanov Emilija , Kjaev Ivo , Dimitrov Goran 
Published: May 2018

Abstract
Introduction. Remifentanil is becoming more and more popular for labor analgesia as an alternative for neuro-axial anesthesia. In this study we compared the severity of pain, patient satisfaction and side effects between two different types of labor analgesia.
Methods. Eightyprimiparous patients ASA I or II, atterm pregnancy, were included in the study and divided in two groups. The first group (35 patients) received intravenous remifentanil on patient control pump in bolus doses. The second group (45 patients) received intermittent epidural boluses with highly diluted local anesthetic and opioid (Bupivacain and Fentanil). We analyzed oxygen saturation (SpO2), respiration rate, heart rate, blood pressure, sedation, nausea and vomiting as well as patient pain scores and satisfaction scores through 2 different VAS.
Results. Mean SpO2 was significantly lower in the PCA remifentanil group 96.2%±1.6 versus 98.2±1.2 in the epidural group. Respiratory depression (RR<9 or SpO2 <90%) was not found in both groups. Sedation scores were significantly higher in the PCA remifentanil group, P<0.05. Incidence of nausea and vomiting was similar between the two groups, without significant difference. PCA remifentanil was inferior to epidural analgesia with respect to pain scores at all time points, but without significant difference in patient satisfaction between the two groups.
Conclusion. Intravenous patient-controlled analgesia with remifentanil provides satisfactory level of labor analgesia, with lower SpO2 and more sedation. It could be an excellent alternative to epidural analgesia but continuous monitoring and oxygen supply is mandatory.
Cerebral Oxygenation Non Invasive Monitoring in Traumatic Brain Injury - A Pilot Study
Authors: Durnev Vesna , Filipce Venko , Brzanov Aleksandra Gavrilovska , Mijovska Maja Mojsova , Stevanovska Marina Temelkovska 
Published: May 2018

Abstract
Introduction. Cerebral oxymetry obtained with Near Infrared Spectroscopy (NIRS) provides noninvasive monitoring of microvasculature in the brain allowing for early recognition and preventive treatment of impaired cerebral oxygenation in traumatic brain injuries. Optimizing cerebral oxygenation is advocated to improve outcome in traumatic brain injured (TBI) hence the goal of this study was to determine the benefit of non invasive monitoring of cerebral oxygenation.
Methods. Noninvasive monitoring was conducted in fifteen patients with traumatic brain injury. The values and changes in cerebral oxymetry were analyzed and compared with others tracked parameters: Glasgow Coma Scale on admission to determine the severity of traumatic brain injuries, systolic arterial blood pressure, mean arterial blood pressure, pulse oxymetry, and regular laboratory test. Regional cerebral oxygenation was measured using cerebral oxymetar INVOS 5100 Somanetics®.
Results. According to obtained data, we noticed that any change in hemodynamic profile directly influenced the regional cerebral oxygen saturation. Higher changes in values of 15 % and more from basal ones correlate with unfavorable outcome as neurologic sequels. Decreased values of rSO2 in our study were rectified with several simple interventions. In our cases parameter which was most prominent cause for disturbed rSO2 was decreased mean arterial blood pressure.
Conclusion. Stable hemodynamic profile leads to optimized cerebral oxygenation. Monitoring the regional oxygen saturation influenced by several factors is important step for forehanded detection of adverse secondary brain injuries. NIRS technology as monitoring system has potential to have diagnostic value and enable right therapeutic decisions and consequently better prognosis in TBI. Continued study of the benefits of cerebral oxygen monitoring is warranted.
Intracerebral Hemorrhage and Epileptic Seizures: Frequency, Localization and Seizures Types
Authors: Cvetkovska Dragana Petrovska , Taravari Arben , Baneva Natalija Dolnenec , Nikodijevik Dijana , Kerala Coskun , Andonovski Alan , Andonovska Biljana 
Published: May 2018

Abstract
Introduction. Among 2.8-18.7% of the patients that suffered from spontaneous intracerebral hemorrhage (ICH) develop seizures. Previous studies suggest that most important contributors to developing subsequent seizures are: volume and localization of hematoma, cortical involvement and age. Aims: To determine the occurrence of new epileptic seizures in patients with spontaneous intracerebral hemorrhage and to analyze it with respect to the patient’s age, gender, presence of premorbid risk factors, localization of the hematoma and the type of the seizures.
Methods. This study is retrospective in design, with study population of 308 patients with spontaneous intracerebral hemorrhage admitted to our clinic in the period between 2008 and 2014. Analyzed premorbid risk factors for ICH are: hypertension, smoking, alcohol uptake. According to the computer tomography (CT) of brain findings the patients was divided in two groups: lobar and thalamic (deep). By the time of presents of seizures, they were classified as early (within 1 week of ICH) or late (more than 1 week after ICH). Also we analyzed the seizures type and we divided them in four groups: simple partial, partial complex, secondary generalized and tonic clonic generalized seizures.
Results. Arterial hypertension was revealed in 78% of the patients with spontaneous supratentorial ICH. Epileptic seizures developed in 8.2% of analyzed patients, most of them in the first week of brain bleeding. Lobar ICH had 78.6% of the patients, with frontal localization was 44% of patients with lobar ICH, and most of them had simple partial and partial complex seizures.
Conclusion. Cortical involvement, large volume of hematoma, may be a factor for provoked seizures, especially in the first days of brain bleeding.
Navigating the Transition from Higher Education to the Labour Market: A Wake-Up Call for University Students
Authors: Wells Peter J. , Florea Silvia 
Published: May 2018

Abstract
Many studies describing the transition from school to work focus on national patterns of labour market entry and in so doing, they often simplify the complex transition processes and job finding requirements involved. Our paper sets out to look at some transition obstacles and paths from higher education to the labour market from the graduates’ point of view as expressed during a recent event held at LBUS. We hold that in Romania the first job upon education is hampered by graduates across all disciplines having no or little work-based experience, thus marking national transition patterns/pathways as less compatible with those in other European countries.
Green synthesis and characterization of Ag1/2Al1/2TiO3 nanoceramics
Authors: Kumar Sandeep , Jha Anal K. , Prasad K. 
Published: May 2018

Abstract
Single phase silver aluminum titanate (Ag1/2Al1/2)TiO3, later called AAT, nanoceramic powder (particle size 2 to 7.5 nm) was synthesized by a low-cost, green and reproducible tartaric acid gel process. X-ray, FT-IR, energy dispersive X-ray and high resolution transmission electron microscopy analyses were performed to ascertain the formation of AAT nanoceramics. X-ray diffraction data analysis indicated the formation of monoclinic structure having the space group P2/m(10). UV-Vis study revealed the surface plasmon resonance at 296 nm. Dielectric study revealed that AAT nanoceramics could be a suitable candidate for capacitor applications and meets the specifications for “Z7R” of Class I dielectrics of Electronic Industries Association. Complex impedance analyses suggested the dielectric relaxation to be of non-Debye type. To find a correlation between the response of the real system and idealized model circuit composed of discrete electrical components, the model fittings were performed using the impedance data. Electric modulus studies supported the hopping type of conduction in AAT. The correlated barrier hopping model was employed to successfully explain the mechanism of charge transport in AAT. The ac conductivity data were used to evaluate the density of states at Fermi level and minimum hopping length of the compound.
Synthesis of SiO2 nanopowders containing quartz and cristobalite phases from silica sands
Authors: Munasir  , Triwikantoro  , Zainuri Mochamad , Darminto  
Published: May 2018

Abstract
In this study, extraction and synthesis of SiO2 nanoparticles from silica sands have been conducted by means of two different methods, i.e. dry method (method 1) and hydrothermal process (method 2). The basic difference between the two methods is in the extraction step. The two methods were compared in terms of being more efficient, economical, and superior in obtaining SiO2 nanoparticles. The SiO2 nanoparticles were characterized in terms of phase purity, crystallinity, Si-O functional bonding as well as particles size and morphology. The most interesting fact in this study was the formation of both quartz and cristobalite phases within all prepared SiO2 nanoparticles.
Influence of aluminium concentration in Zn0:9V0:1O nanoparticles on structural and optical properties
Authors: Sayari A. , El Mir L. , Al-Heniti S. , Al-Harbi T. , Yaghmour S. J. , Al-Ghamdi A.A. 
Published: May 2018

Abstract
The (V,Al) co-doped ZnO nano-structured powders (Zn0.9-xV0.1AlxO, where x = 0.02, 0.03 and 0.04) were synthesized via the sol-gel technique and their structural and optical properties were investigated. The effect of Al concentration on the structural and optical properties of the Zn0.9-xV0.1AlxO nanopowders was studied using various techniques. The XRD patterns indicate that the samples have a polycrystalline wurtzite structure. The crystallite size increases with increasing the Al content and lies in the range of 23 to 30 nm. The lattice strain, estimated by the Stokes-Wilson equation, decreases when Al content increases. SEM and TEM micrographs show that Zn0.9-xV0.1AlxO powders are the agglomeration of nanoparticles having spherical and hexagonal shapes with dimensions ranging from 20 to 30 nm. FT-IR spectra show a distinct absorption peak at about 500 cm-1 for ZnO stretching modes and other peaks related to OH and H2O bands. Raman spectra confirm the wurtzite structure of the Zn0.9-xV0.1AlxO nanoparticles. The direct band gaps of the synthesized Zn0.9-xV0.1AlxO nanopowders, estimated from the Brus equation and the crystallite sizes deduced from XRD, are around 3.308 eV. The decomposition process of the dried gel system was investigated by thermal gravimetric analysis (TGA).
First principles study of structure, electronic and optical properties of Y3Fe5O12 in cubic and trigonal phases
Authors: Tao Shen , Chao Hu , Hailong Dai , Wenlong Yang , Hongchen Liu , Xinlao Wei 
Published: May 2018

Abstract
First principles calculations have been performed to investigate the structure, electronic and optical properties of Y3Fe5O12. Both the cubic and trigonal phases have been considered in our calculation. The calculated structural parameters are slightly larger than the experimental values. The band structures show that Y3Fe5O12 in cubic and trigonal phases have direct band gaps of 0.65 and 0.17 eV. The calculations of dielectric function, absorption, extinction coefficient, refractive index, energy loss function and reflectivity are presented.
Two-phase synthesis of olive-like NiS particles and chain-like Bi2S3 nanowires
Authors: Yuan Yawen , Xu Hanyue , Meng Xiaojuan , Han Qiaofeng 
Published: May 2018

Abstract
Highly dispersed olive-like NiS particles were synthesized in a liquid-liquid biphasic system at room temperature, where nickel xanthate in organic solvents (toluene and benzene) and sodium sulfide in water solution were used as nickel and sulfide sources, respectively. NiS particles were formed at the stabilized phase interface. The structures, chemical composition and optical characteristics of the products were investigated by transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and ultraviolet-visible spectroscopy. The organic solvents obviously influenced the morphology of the NiS particles. The olive-like NiS with smooth surface and sharp ends was obtained at benzene/water interface, while spindle-like NiS particles with rough surface and circle ends were formed when using toluene as a solvent. Analogously, chainlike Bi2S3 nanowires were produced at chloroform/water interface. The effect of the experiment parameters including reaction time, solvent and concentration of reactants on the size and morphology of the products was discussed in detail and a possible formation mechanism was suggested.
Infrared luminescence and thermoluminescence of lithium borate glasses doped with Sm3+ ions
Authors: Anjaiah J. , Laxmikanth C. , Veeraiah N. , Kistaiah P. 
Published: May 2018

Abstract
Thermoluminescence (TL) characteristics of X-ray irradiated pure and doped with Sm3+ ions Li2O-MO-B2O3 (where MO=ZnO, CaO, CdO) glasses have been studied in the temperature range of 303 to 573 K. All the pure glasses exhibited single TL peaks at 382 K, 424 K and 466 K. When these glasses were doped with Sm3+ ions no additional peaks have been observed but the glow peak temperature of the existing glow peak shifted gradually towards higher temperatures with gain in intensity of TL light output. The area under the glow curve was found to be maximum for Sm3+ doped glasses mixed with cadmium oxide as a modifier. The trap depth parameters associated with the observed TL peaks have been evaluated using Chen’s formulae. The possible use of these glasses in radiation dosimetry has been described. The results clearly showed that samarium doped cadmium borate glass has a potential to be considered as a thermoluminescence dosimeter.
Morphological features in aluminum nitride epilayers prepared by magnetron sputtering
Authors: Stach Sebastian , Dallaeva Dinara , Ţălu Ştefan , Kaspar Pavel , Tománek Pavel , Giovanzana Stefano , Grmela Lubomír 
Published: May 2018

Abstract
The aim of this study is to characterize the surface topography of aluminum nitride (AlN) epilayers prepared by magnetron sputtering using the surface statistical parameters, according to ISO 25178-2:2012. To understand the effect of temperature on the epilayer structure, the surface topography was investigated through atomic force microscopy (AFM). AFM data and analysis of surface statistical parameters indicated the dependence of morphology of the epilayers on their growth conditions. The surface statistical parameters provide important information about surface texture and are useful for manufacturers in developing AlN thin films with improved surface characteristics. These results are also important for understanding the nanoscale phenomena at the contacts between rough surfaces, such as the area of contact, the interfacial separation, and the adhesive and frictional properties.
Precise determination of HPGe detector efficiency for gamma spectrometry measurements of environmental samples with variable geometry and density
Authors: Barrera Manuel , Casas-Ruiz Melquiades , Alonso José J. , Vidal Juan 
Published: May 2018

Abstract
A methodology to determine the full energy peak efficiency (FEPE) for precise gamma spectrometry measurements of environmental samples with high-purity germanium (HPGe) detector, valid when this efficiency depends on the energy of the radiation E, the height of the cylindrical sample H, and its density ρ, is introduced. The methodology consists of an initial calibration as a function of E and H and the application of a self-attenuation factor, depending on the density of the sample ρ, in order to correct for the different attenuation of the generic sample in relation to the measured standard. The obtained efficiency can be used in the whole range of interest studied, E = 120–2000 keV, H = 1–5 cm, and ρ = 0.8–1.7 g/cm3, being its uncertainty below 5%. The efficiency has been checked by the measurement of standards, resulting in a good agreement between experimental and expected activities. The described methodology can be extended to similar situations when samples show geometric and compaction differences.
Permission-based Leadership and Change Management in Hong Kong's Nongovernment Organisations
Authors: Wong Michael , Yeung Davey 
Published: May 2018

Abstract
This study addresses the management of transformational change by chief executives in nongovernment organisations (NGOs) in Hong Kong. The study takes an exploratory approach with interviews of 18 chief executives from a cross section of Hong Kong's NGOs. The findings indicate that organisational transformation is driven by increasing competition within the NGO sector and from commercial firms, by a demand for greater transparency and by internal forces. These factors are countered by structural inertia. Leadership of the organisational transformation of an NGO is permission-based; agreement from the various stakeholders must be gained to execute a successful transformation. The chief executive should have a humanistic style and be visionary, ethical and participative. Constant communication and involvement facilitate this process. Through this approach, followers will have a greater commitment to the organisational transformation. Organisational change is a combination of planned and emergent processes. The chief executive should relax control and foster a nurturing environment for transformation. This research suggests a leadership style, behavioural approach and model for managing change that will provide chief executives and senior leaders with useful considerations and insights.
The Involvement of Budapest Residents with Visual Impairments in Leisure Sports: Barriers and Facilitators
Authors: Gombás Judit , Gál Andrea 
Published: May 2018

Abstract
Since the political and economic changes that occurred in 1989-1990, Hungary has been in a state of transition from a socialist regime to a democratic culture. In an effort to comply with the rules of democracy, equal opportunities for people with disabilities are demanded on various platforms. However, inclusion in sports is still uncommon, and physical education (P.E.) teachers, trainers, sports scientists, etc. are not provided with in-depth education on adapted sports. The present study examines the involvement of Hungarian adults with VI (visual impairments) in leisure sports and investigates facilitators and barriers which members of the target group face. First, the educational opportunities (segregation or inclusion) provided for Hungarian children with VI are introduced. The historical and legislative backgrounds are presented in order to give a clear review of the social context. Findings of a survey on the activity levels of Hungarian adults with vision loss are introduced, which reflect the target group’s willingness to get involved in leisure activities and also pinpoint factors which hinder their participation (e.g., professionals’ unfamiliarity with the special needs of those with VI and adapted sports opportunities).
Effects of Regional Inequalities on the Sporting Activity of School Pupils: The Hungarian Case
Authors: Vámos Ágnes , Foldesi Gyongyi S. , Doczi Tamas 
Published: May 2018

Abstract
In this study, the sporting activity of Hungarian school pupils is investigated with a focus on regional differences. The objective of the paper is to answer the following questions: Are there regional differences in pupils’ sporting activity, and, if yes, what is their relationship with the socio-cultural background of the pupils and the infrastructural and staffing conditions of schools? Has the 2012 introduction of daily physical education had a different effect on pupils’ leisure-time sporting activity in disadvantaged and affluent regions? Can the trends in the sporting activity of pupils be characterized as convergent or divergent since the introduction of daily physical education? The paper is based on an extensive study that relies on the most comprehensive database on physical education in schools, the National Assessment of Basic Competencies (NABC). The present study statistically analyzed eighth-grade pupil and school data from the 2010 and 2014 NABC. The results present the regional differences in pupils’ participation in sporting activity, their recent modification, and the main reasons behind the changes. In conclusion, the authors state that social, economic, and cultural inequalities are not clearly reflected in the sporting activity of students; however, certain data still call attention to the need to examine regional differences.
Social Talent Scouting: A New Opportunity for the Identification of Football Players?
Authors: Radicchi Elena , Mozzachiodi Michele 
Published: May 2018

Abstract
This paper investigates the diffusion of digital technologies within the football talent scouting process. A qualitative exploration based on open discussions and unstructured interviews with professionals involved in the football system (coaches, scouts, players’ agents, etc.) provides insights about how new technologies are used for recruiting athletes. The findings, which are mainly in the context of Italian football, indicate a cultural and generational gap in the use of new digital tools that creates a mismatch between young promising athletes (demand side) and “senior” team professionals (supply side).