bluuebunny/crossref_metadata_2025_split huggingface dataset:
Changes in Knee Joint Space Width in Treatment with a New Hyaluronic-Based Hydrogel
Authors: Russu Octav Marius , Feier Andrei Marian , Pop Tudor Sorin , Todoran Marcela , Gergely István 
Published: September 2017

AbstractObjective: Our purpose was to assess the effect of a new hyaluronic acid-based (Hymovis®) injections on joint space width narrowing in patients diagnosed with knee osteoarthritis.Methods: A prospective clinical trial was conducted in the Department of Orthopedics and Traumatology II from the Clinical County Hospital, Tîrgu Mureș, Romania. Thirty-five patients diagnosed with idiopathic knee osteoarthritis received two intraarticular injections with hyaluronic acid-based hydrogel (24 mg of hyaluronic acid/3 ml) at one-week interval. Anteroposterior radiographs were obtained before the injections, at six and twelve months after. Minimum joint space width was measured by two senior orthopaedics surgeons at each follow up. Each radiograph was measured again by the same evaluators two weeks apart.Results: Thirty-one patients were present at the final follow-up. A minor reduction in mean weight was noticed (from 82.2 kg ± 16.2 kg to 80.9 kg ± 16.0, p > 0.398) without any correlation with joint space width narrowing. There were no major changes at the first follow up (6 months) regarding joint space narrowing. A reduction in joint space width was observed however at 12 months varying from 4.4 mm (SD ± 1.64, range 1.8-7.1) at the first assessment to 4.3 mm (SD ± 1.26, range 0.0-6.8) at the final follow-up but with no statistical difference (p=0.237).Conclusion: No significant modification in joint space width at the final follow-up secondarily proved that two injections of Hymovis® may slow down narrowing in the knee joint space over a one-year period.
Ultrasound Guidance Versus Peripheral Neurostimulation for Brachial Plexus Block Anesthesia with Axillary Approach and Multiple Injection Technique
Authors: Lazar Alexandra , Szederjesi János , Iftenie Elena , Azamfirei Leonard 
Published: September 2017

Abstract

Introduction: There are several approaches for brachial plexus anesthesia: supraclavicular, infraclavicular, interscalenic and axillary. Out of these, the axillary approach is considered to be the safest because of the low risk of lesioning the adjacent structures, low risk of phrenic nerve blockade or of producing an iatrogenic pneumothorax. The block can be performed by one single injection at the site, by two injections or by several injection, among each nerve of the plexus. Ultrasound was introduced in regional anesthesia since 1978, being used initially as an auxiliary method to peripheral neurostimulator.

Objectives: The evaluation of ultrasound efficiency as an auxiliary method for brachial plexus block performance, in terms of success rate, vascular punctures. The influence of obesity on performing time, total duration of the block, and success rate of brachial plexus block.

Material and method: Prospective, randomized study which enrolled adult patients, scheduled for surgical emergency or elective surgical intervention on upper limb with brachial plexus block by axillary approach, using either the peripheral nerve stimulation or the ultrasound guidance.

Results: We enrolled 160 patients, grouped in two sets- the ultrasound group= 82 patients (US) the neurostimulation group = 78 patients (NS). Vascular punctures were statistically significant different p= 0, 04. The success rate was not influenced by the obesity.

Conclusions: Ultrasound guidance makes axillary brachial plexus block safer, we can recommend ultrasound guidance as routine for axillary brachial plexus block. The obese patient can beneficiate by both methods of brachial plexus blockage.
The Wnt Signalling Pathways: A Short Review and Specific Roles in Bone Biochemistry
Authors: Kovács Béla , Nagy Előd Ernő , Chendrean Norbert Nándor , Székely-Szentmiklósi Blanka , Gyéresi Árpád 
Published: September 2017

AbstractAs musculoskeletal diseases become an emerging healthcare problem worldwide, profound and comprehensive research has been focused on the biochemistry of bone metabolism in the past decades. Wnt signalling, one of the novel described pathways influencing bone metabolism from the early stages of tissue development, has been recently in the centre of attention. Several Wnt ligands are implied in bone forming pathways via canonical (β-catenin dependent) and non-canonical (β-catenin independent) signalling. Osteoporosis, a catabolic bone disease, has its pathologic background related, inter alia, to alterations in the Wnt signalling, thus key modulators of these pathways became one of the most promising targets in the treatment of osteoporosis. Antibodies inhibiting the activity of endogenous Wnt pathway inhibitors (sclerostin, dickkopf) are recently under clinical trials. The current article offers a brief review of the Wnt signalling pathways, its implication in bone metabolism and fate, and the therapeutic possibilities of osteoporosis through Wnt signalling.
A Standardized Dissection Protocol to Generate Aortic Valvular Scaffolds from Porcine Hearts
Authors: Movileanu Ionela , Harpa Marius , Branzaniuc Klara , Suciu Horatiu , Cotoi Ovidiu S. , Olah Peter , Simionescu Dan 
Published: September 2017

Abstract

Objective: To describe a particular harvesting procedure for isolating intact porcine aortic heart valve roots as potential sources for biologic scaffolds.

Methods: Fresh porcine hearts were brought to the Tissue Engineering and Regenerative Medicine Laboratory at the University of Medicine and Pharmacy in Targu Mures. The aortic roots were extracted from the porcine hearts by anatomical dissection. For this purpose, we used a basic surgical instrument kit. This initial phase was the first step in obtaining acellular extracellular matrix as a biologic scaffold material.

Results: Aortic roots were isolated with preservation of the ascending aorta as well as the intact aortic sinus and coronaries together with the adjacent myocardial tissue and anterior leaflet of the mitral valve. This approach allowed for safe mounting of roots into mounting rings for perfusion decellularization.

Conclusions: The described procedure is a feasible protocol for obtaining intact biological valvular scaffolds from porcine hearts. Reduced requirements regarding tools and personnel underline the easiness of aortic root harvesting using this particular procedure.
Analysis of Grassland ANPP Dynamics Due to Changes in Climate Variables at Ukrainian Biosphere Reserve ‘Askania-Nova’
Authors: Belyakov Sergiy , Gofman Orysia , Vyshenska Iryna , Zvegintsev Sergey 
Published: September 2017

Abstract
The Ukrainian feather-grass steppe ecosystems are highly vulnerable to climate changes. To study the impact of climatic factors on steppe ecosystems’ productivity, the correlation and stepwise regression analysis between ANPP and other variables were provided. The correlation of bioclimatic variables (month precipitation, relative humidity and air and soil temperatures) and above-ground net primary production (ANPP) were investigated for three study plots that represent major steppe microrelief: plain, slope and lowland. The results of multiple regression analysis showed the major components that influenced the ANPP at each of the study plots ‘Plain’, ‘Slope’ and ‘Lowland’. The precipitation and relative humidity in the months before the vegetation peak were most important for ANPP accumulation.
Results of this study are important for the prediction of ecosystem changes under the climate changes and also for the development of nature conservation programmes.
Environmental Status of Kam’yanske Reservoir (Ukraine)
Authors: Sharamok Tetyana , Ananieva Tamila , Fedonenko Olena 
Published: September 2017

Abstract
Environmental status of Kam’yanske reservoir (47°55′51.6″N 33°46′08.4″E) as one of the small water bodies belonging to southeast Ukraine was investigated. The integrated environmental assessment based on the quality indices of salt content, trophic–saprobiological indicators and specific toxic water indicators of Kam’yanske reservoir are characterised as ‘satisfactory’ and ‘slightly polluted’. Defined bottom accumulation coefficient (BAC) shows continuing heavy metals enlargement in the upper layer of the bottom sediments and chronic pollution in ecosystem. The content of heavy metals in the muscles of industrial fish in the researched pond did not exceed maximal allowed concentration (MAC) for fish as food according to Ukrainian standards. Accumulation of heavy metals in fish was due to the peculiarities of their ways of nutrition and existing. The total contents of heavy metals in common carp was almost twice as large compared to other fish. The maximum accumulation rates set for fish muscles of essential elements – zinc and iron.
“The Reality from the Myth”: The poor as main agents of forest degradation: Lessons from Ashanti Region, Ghana
Authors: Peprah Prince , Abalo Emmanuel Mawuli , Amoako Jones , Nyonyo Julius , Duah Williams Agyemang , Adomako Isaac 
Published: September 2017

Abstract
The prevailing literature on poverty-environment links mostly presents a rather deterministic view of the nexus between poverty and the environment, revolving around the negative impact of the poor on the environment. Specifically, in Ghana, empirical evidence on the prevalence of forest degradation is sparse because the requisite data are often difficult to obtain. Using a qualitative approach, data collected through in-depth interviews with 45 randomly selected participants and 5 purposively selected key informants (Traditional Authorities) and using a thematic analysis, the poverty-environment, specifically the forest degradation nexus was verified. This cross-sectional study leads the authors to posit that poverty has a minimal negative effect on major forest degradation in Ghana. The study found that the poor were rather conscious, and future-oriented with regard to the environment, specifically forests owing to how their livelihoods and survival are directly linked to their immediate environment. The results suggest that the poverty-environment nexus could be country, or context-specific and varies between geographical and historical contexts. By implication, the seemingly universal assertion that the poor are those who cause major deforestation in communities could be problematic. Henceforth, the study maintains that it would be a fallacy to make generalisations that poverty is the main cause of major forest degradation, since the link between poverty and the environment is very context-specific. We argued on the premise that reduction of poverty in Ghana may not lead to the reduction of forest degradation. Joint implementation of holistic poverty-environment strategies that incorporate both the poor and the rich should be adopted to curb the wanton forest degradation in Ghana.
Alien plant species (ephemerophytes) in Romensko-Poltavsky Geobotanical District, Ukraine
Authors: Dvirna Tetyana S. 
Published: September 2017

Abstract
This paper presents the results of research on ephemerophytes of the alien portion of the flora of the Romensko-Poltavsky Geobotanical District (north-eastern Ukraine). It is a detailed study of this group of plants, conducted for the first time in the Ukraine. The checklist of alien vascular plants contains 345 species, of which 27 species are ephemerophytes (or 8%): Adonis aestivalis, A. annua, Papaver albiflorum, Urtica cannabina, Gypsophila perfoliata, Atriplex micrantha, Chenopodium × preissmannii, Ch. × thellungii, Rumex longifolius, Sisymbrium polymorphum, Euphorbia humifusa, Malus sylvestris, Onobrychis viciifolia, Astrodaucus orientalis, Datura tatula, Solanum schultesii, Lindernia procumbens, Melampyrum cristatum, Helianthus annuus, Petasites spurius, Xanthium ripicola × Xanthium albinum, Echinochloa tzvelevii, Panicum capillare, Panicum capillare L. subsp. barvipulvinatum, Phalaris canariensis, Setaria ×ambigua, Sorghum halepense. The basis of this work is original data of the author obtained during field studies, and a critical study of the literature, archival, cartographic materials and herbarium collections, and the use of classical methods of botanical classification. Complex research of this group of plants was conducted and as a result of these investigations the following characteristics were established: a predominance of kenophytes of Mediterranean origin in this group, species of arid areas, cosmopolitan species with a diffuse type of space structure, therophytes, herbaceous monocarpic plants, mesotrophes, heliophytes and xeromesophytes, with an insignificant degree of impact on native plant communities and with a limited distribution within the study region. The combination of these results indicates that ephemerophytes comprise a temporary, unstable component of the flora of this region of the Ukraine. The paper provides maps of the distribution of these 27 species.
Vieta’s Formula about the Sum of Roots of Polynomials
Authors: Korniłowicz Artur , Pąk Karol 
Published: September 2017

Summary
In the article we formalized in the Mizar system [2] the Vieta formula about the sum of roots of a polynomial anxn
+ an−

1
xn−

1 + ··· + a
1
x + a
0 defined over an algebraically closed field. The formula says that

x
1

+

x
2

+
⋯
+

x

n
−
1

+

x
n

=
−

a

n
−
1

a
n

$x_1 + x_2 + \cdots + x_{n - 1} + x_n = - {{a_{n - 1} } \over {a_n }}$

, where x
1, x
2,…, xn
are (not necessarily distinct) roots of the polynomial [12]. In the article the sum is denoted by SumRoots.
Introduction to Stopping Time in Stochastic Finance Theory
Authors: Jaeger Peter 
Published: September 2017

Summary
We start with the definition of stopping time according to [4], p.283. We prove, that different definitions for stopping time can coincide. We give examples of stopping time using constant-functions or functions defined with the operator max or min (defined in [6], pp.37–38). Finally we give an example with some given filtration. Stopping time is very important for stochastic finance. A stopping time is the moment, where a certain event occurs ([7], p.372) and can be used together with stochastic processes ([4], p.283). Look at the following example: we install a function ST: {1,2,3,4} → {0, 1, 2} ∪ {+∞}, we define:
a. ST(1)=1, ST(2)=1, ST(3)=2, ST(4)=2.
b. The set {0,1,2} consists of time points: 0=now,1=tomorrow,2=the day after tomorrow.
We can prove:
c. {w, where w is Element of Ω: ST.w=0}=∅ & {w, where w is Element of Ω: ST.w=1}={1,2} & {w, where w is Element of Ω: ST.w=2}={3,4} and
ST is a stopping time.
We use a function Filt as Filtration of {0,1,2}, Σ where Filt(0)=Ω
now
, Filt(1)=Ω
fut

1 and Filt(2)=Ω
fut

2. From a., b. and c. we know that:
d. {w, where w is Element of Ω: ST.w=0} in Ω
now
and
{w, where w is Element of Ω: ST.w=1} in Ω
fut

1 and
{w, where w is Element of Ω: ST.w=2} in Ω
fut

2.
The sets in d. are events, which occur at the time points 0(=now), 1(=tomorrow) or 2(=the day after tomorrow), see also [7], p.371. Suppose we have ST(1)=+∞, then this means that for 1 the corresponding event never occurs.
As an interpretation for our installed functions consider the given adapted stochastic process in the article [5].
ST(1)=1 means, that the given element 1 in {1,2,3,4} is stopped in 1 (=tomorrow). That tells us, that we have to look at the value f
2(1) which is equal to 80. The same argumentation can be applied for the element 2 in {1,2,3,4}.
ST(3)=2 means, that the given element 3 in {1,2,3,4} is stopped in 2 (=the day after tomorrow). That tells us, that we have to look at the value f
3(3) which is equal to 100.
ST(4)=2 means, that the given element 4 in {1,2,3,4} is stopped in 2 (=the day after tomorrow). That tells us, that we have to look at the value f
3(4) which is equal to 120.
In the real world, these functions can be used for questions like: when does the share price exceed a certain limit? (see [7], p.372).
Pascal’s Theorem in Real Projective Plane
Authors: Coghetto Roland 
Published: September 2017

Summary
In this article we check, with the Mizar system [2], Pascal’s theorem in the real projective plane (in projective geometry Pascal’s theorem is also known as the Hexagrammum Mysticum Theorem)1. Pappus’ theorem is a special case of a degenerate conic of two lines.
For proving Pascal’s theorem, we use the techniques developed in the section “Projective Proofs of Pappus’ Theorem” in the chapter “Pappus’ Theorem: Nine proofs and three variations” [11]. We also follow some ideas from Harrison’s work. With HOL Light, he has the proof of Pascal’s theorem2. For a lemma, we use PROVER93 and OTT2MIZ by Josef Urban4 [12, 6, 7]. We note, that we don’t use Skolem/Herbrand functions (see “Skolemization” in [1]).
Spermiogenesis and sperm ultrastructure inCalicotyle affinisScott, 1911 (Platyhelminthes, Monogenea, Monopisthocotylea, Monocotylidae)
Authors: Bruňanská M. , Poddubnaya L. G. 
Published: September 2017

SummarySpermatological characteristics ofCalicotyle affinisScott, 1911, an endoparasitic monocotylid monogenean from the cloaca of a holocephalan fishChimaera monstrosaL, have been investigated by means of transmission electron microscopy for the first time. Spermiogenesis exhibits features basically similar to those of the congenericCalicotyle kroyeriandCalicotyle australiensis, but there are some new findings with respect to the formation and fine structure of the spermatozoon including the remarkable complex end-piece (EP). Morphogenesis of the EP, which is located at the anterior (proximal) region of the late spermatid, includes two stages: (1) the centriolar region is continuous with a cytoplasmic mass of the zone of differentiation, the electron-dense surface of the spermatid undergoes significant changes in the sculpturing and the inner core of developing spermatid is electron-lucent; (2) after central fusion of the arching membranes a definitive structure of the EP is subsequently evolved, finally comprising 3 – 4 electron-dense discs attached to a central common electron-lucent column. The EP is considered as a synapomorphy of the generaCalicotyle+Dictyocotyle. The mature spermatozoon ofC.affiniscomprises the EP, two parallel axonemes of almost equal lengths with the 9 + “1” trepaxonematan pattern, mitochondrion, nucleus, and a reduced number of parallel cortical microtubules (1 – 3). The posterior (distal) extremity of the mature spematozoon contains a single tapering axoneme. Ultrastructural characteristics of the mature spermatozoon ofC. affiniscoincide mostly with those of congenericC. australiensis. Variations of the spermatological characters within the genusCalicotyle, betweenCalicotyleand enigmaticDictyocotyleas well as other monocotylid monogeneans are discussed.
Influence of the Preparation Method on Planar Perovskite CH3NH3PbI3-xClx Solar Cell Performance and Hysteresis
Authors: Ivanova A. , Tokmakov A. , Lebedeva K. , Roze M. , Kaulachs I. 
Published: September 2017

Abstract
Organometal halide perovskites are promising materials for lowcost, high-efficiency solar cells. The method of perovskite layer deposition and the interfacial layers play an important role in determining the efficiency of perovskite solar cells (PSCs). In the paper, we demonstrate inverted planar perovskite solar cells where perovskite layers are deposited by two-step modified interdiffusion and one-step methods. We also demonstrate how PSC parameters change by doping of charge transport layers (CTL). We used dimethylsupoxide (DMSO) as dopant for the hole transport layer (PEDOT:PSS) but for the electron transport layer [6,6]-phenyl C61 butyric acid methyl ester (PCBM)) we used N,N-dimethyl-N-octadecyl(3-aminopropyl)trimethoxysilyl chloride (DMOAP).
The highest main PSC parameters (PCE, EQE, VOC
) were obtained for cells prepared by the one-step method with fast crystallization and doped CTLs but higher fill factor (FF) and shunt resistance (Rsh
) values were obtained for cells prepared by the two-step method with undoped CTLs.
The Evaluation of Efficiency of the Use of Machine Working Time in the Industrial Company – Case Study
Authors: Kardas Edyta , Brožova Silvie , Pustějovská Pavlína , Jursová Simona 
Published: September 2017

Abstract
In the paper the evaluation of efficiency of the use of machines in the selected production company was presented. The OEE method (Overall Equipment Effectiveness) was used for the analysis. The selected company deals with the production of tapered roller bearings. The analysis of effectiveness was done for 17 automatic grinding lines working in the department of grinding rollers. Low level of efficiency of machines was affected by problems with the availability of machines and devices. The causes of machine downtime on these lines was also analyzed. Three basic causes of downtime were identified: no kanban card, diamonding, no operator. Ways to improve the use of these machines were suggested. The analysis takes into account the actual results from the production process and covers the period of one calendar year.
Big Data in the Industry - Overview of Selected Issues
Authors: Gierej Sylwia 
Published: September 2017

Abstract
This article reviews selected issues related to the use of Big Data in the industry. The aim is to define the potential scope and forms of using large data sets in manufacturing companies. By systematically reviewing scientific and professional literature, selected issues related to the use of mass data analytics in production were analyzed. A definition of Big Data was presented, detailing its main attributes. The importance of mass data processing technology in the development of Industry 4.0 concept has been highlighted. Subsequently, attention was paid to issues such as production process optimization, decision making and mass production individualisation, and indicated the potential for large volumes of data. As a result, conclusions were drawn regarding the potential of using Big Data in the industry.
Biophotonics for Biofuel Upgradation
Authors: Rana Gopinath , Mandal Tanusri 
Published: September 2017

Abstract
Experimental studies have been made to find out Cyanobacterias’ biophotonical response in gaseous-fuelation and carbon dioxide fixation during photo-anaerobic digestion. A new horizontal type photo-bioreactor has been designed by using environment hazard plastic bottles and it works ideally for anoxygenic cyanobacterial growth. Through ‘V3-metagenomics’ of 16S rRNA gene sequencing by paired-end Illumina MiSeq and downstream analysis by QIIME program, we have identified anaerobic cyanobacteria, represent the orders YS2 and Streptophyta. OTUs have been identified by aligning against Greengenes and Silva databases, separately. The flame temperature of the fuel gas is 860°C and the percent-content of carbon dioxide (CO2) is 17.6%.
Reciprocal Allocation Method in Service Departments. The Case of a Production Enterprise
Authors: Papaj Ewelina 
Published: September 2017

Abstract
The main aim of this article is to indicate the role of reciprocal allocation method in the process of costs calculation. In the environment of nowadays companies, often taking very complex organisational forms, the existence of service departments becomes of great importance. Although, as far as management accounting processes are concerned, which lead to identifying the product cost, the service departments’ costs come out to be of minor importance. This article means to prove that the service departments’ costs and their reliable settlement are a desirable source of information about the products. This work consists of two parts. First of them features theoretical considerations and a critical analysis of subject literature. In the latter part, the service departments’ costs calculation will be presented, basing on reciprocal services in a production enterprise from chemical industry.