bluuebunny/crossref_metadata_2025 huggingface dataset:
Management of extra-articular segmental defects in long bone using a titanium mesh cage as an adjunct to other methods of fixation
Authors: Attias N. , Thabet A. M. , Prabhakar G. , Dollahite J. A. , Gehlert R. J. , DeCoster T. A.
Published: April 2018

Aims

This study reviews the use of a titanium mesh cage (TMC) as an adjunct to intramedullary nail or plate reconstruction of an extra-articular segmental long bone defect.

Patients and Methods

A total of 17 patients (aged 17 to 61 years) treated for a segmental long bone defect by nail or plate fixation and an adjunctive TMC were included. The bone defects treated were in the tibia (nine), femur (six), radius (one), and humerus (one). The mean length of the segmental bone defect was 8.4 cm (2.2 to 13); the mean length of the titanium mesh cage was 8.3 cm (2.6 to 13). The clinical and radiological records of the patients were analyzed retrospectively.

Results

The mean time to follow-up was 55 months (12 to 126). Overall, 16 (94%) of the patients achieved radiological filling of their bony defect and united to the native bone ends proximally and distally, resulting in a functioning limb. Complications included device failure in two patients (12%), infection in two (12%), and wound dehiscence in one (6%). Four patients (24%) required secondary surgery, four (24%) had a residual limb-length discrepancy, and one (6%) had a residual angular limb deformity.

Conclusion

A titanium mesh cage is a useful adjunct in the treatment of an extra-articular segmental defect in a long bone. Cite this article: Bone Joint J 2018;100-B:646–51.
El Congreso AIDIPE2017, XVIII Congreso Internacional de Investigación Educativa: Interdisciplinaridad y Transferencia
Authors: Rodríguez-Conde María-José
Published: April 2018

La decimoctava edición del Congreso Internacional de Investigación Educativa en España, organizado por la Asociación Interuniversitaria de Investigación Pedagógica (AIDIPE), en colaboración con el Instituto Universitario de Ciencias de la Educación (IUCE) de la Universidad de Salamanca, se celebró hace ya unos meses (28 al 30 de junio de 2017) en el entorno de la celebración del VIII Centenario de la Universidad salmantina (1218-2018). Este evento científico que nació hace más de treinta años por el impulso de jóvenes investigadores en educación en los albores de una nueva Universidad española, con el fin de reunir a compañeros y amigos y compartir experiencias y avances en metodología y en contenido de investigación en educación, llega a la más longeva Universidad española. Actualmente, con un alto desarrollo tecnológico y de afluencia de jóvenes y séniores investigadores en educación, desde una perspectiva interdisciplinar, construyendo aproximaciones novedosas a soluciones de problemas educativos de esta nueva sociedad del conocimiento, con un enfoque propio de la ciencia abierta o la ciencia conectada en red. Este número de la revista Education in The Knowledge Society (EKS) quiere servir de homenaje y agradecimiento a los jóvenes y a los séniores investigadores que han participado en su organización y en su éxito. Como muestra de los resultados del Congreso de Salamanca presentamos tres de los estudios mejor valorados por el equipo científico nacional e internacional.
Efeitos da drenagem ácida de mina sobre a qualidade das águas subterrâneas: preceitos legais e técnicos
Authors: Aparecida Galhardi Juliana , Camargo Soldera Bruna
Published: April 2018

Atividades de mineração podem causar degradação ambiental em grandes extensões, comprometendo solos, águas superficiais e subterrâneas, atmosfera e a biota. A exploração mineral tem como consequência a exposição de grandes quantidades de sulfetos a processos de intemperismo que geram ambientes ácidos em consequência da produção de drenagem ácida de mina (DAM), promovendo a solubilização de metais e o transporte destes para os fluxos de águas naturais. Entretanto, as variações hidroquímicas das águas subterrâneas em áreas de mineração e os efeitos da DAM sobre os aquíferos foram ainda pouco investigados no Brasil. Este trabalho visou identificar as principais normas legais que gerem a qualidade dos recursos hídricos subterrâneos no Brasil, de forma a integrar aspectos ambientais, técnicos e legais concernentes aos impactos da DAM sobre as águas subterrâneas, possibilitando, dessa forma, identificar os fatores mais urgentes a serem desenvolvidos com o intuito de proteger efetivamente tais recursos. Entre tais fatores, a definição de critérios de lançamento de efluentes sobre os solos e águas é essencial, inclusive para projetar-se um sistema de coleta, tratamento e disposição final de resíduos em áreas de mineração que atendam a preceitos básicos de qualidade ambiental. Para isso, uma avaliação criteriosa sobre os processos ambientais e geoquímicos operantes no meio é essencial durante o planejamento pré-mineração, operatório e pós-operação. Desta forma, os problemas concernentes aos efluentes ácidos gerados, que podem comprometer profundamente os ecossistemas, não serão resolvidos em curto prazo por meio de uma intervenção pontual e desarticulada com parâmetros legais e ambientais.
Development and quality of gladiolus stems with the use of vermicompost and Trichoderma sp. in substrate
Authors: Ludwig Fernanda , Da Cruz Letícia Rutz Dewantier , Steffen Gerusa Pauli Kist , Maldaner Joseila
Published: April 2018

The gladiolus is an important cut flower that is cultivated in all parts of the world, and it is very appreciated to be used in floral arrangements. The growing concern with the environmental contamination and the look for production with higher quality have resulted in increasing the number of studies on the use of organic inputs and microorganisms in floriculture, in particular, the vermicompost and the Trichoderma sp. This work was conducted with the objective to evaluate the development and the quality of gladiolus floral stems in function of the use of vermicompost and Trichoderma sp. applied to the substrate. The experiment was conducted in a greenhouse during the period of August to December of 2015. It was done by utilizing four treatments: T1 = control substrate (50% soil and 50% commercial substrate Carolina Soil); T2 = vermicompost (40%) and control substrate (60%); T3 = Trichoderma sp. added to the control substrate; T4 = Trichoderma sp. added to the vermicompost (40%) and control substrate (60%). The gladiolus variety used was the Peter’s Pears. The variables analyzed were main plant height, Falker chlorophyll index, length and diameter of the main stem, tassel length, quantity of main stem florets, proportionality between tassel and stem, and time until the start of flowering. It was concluded that the development and the quality of the gladiolus floral stem were favored by the use of vermicompost in the concentration of 40% added to the substrate.
4FAD: A framework for mapping the evolution of artefacts in the learning design process
Authors: Muñoz-Cristóbal Juan A. , Hernández-Leo Davinia , Carvalho Lucila , Martinez-Maldonado Roberto , Thompson Kate , Wardak Dewa , Goodyear Peter
Published: April 2018

A number of researchers have explored the role and nature of design in education, proposing a diverse array of life cycle models. Design plays subtly different roles in each of these models. The learning design research community is shifting its attention from the representation of pedagogical plans to considering design as an ongoing process. As a result, the study of the artefacts generated and used by educational designers is also changing: from a focus on the final designed artefact (the product of the design process) to the many artefacts generated and used by designers at different stages of the design process (e.g., sketches, reflections, drawings, or pictures). However, there is still a dearth of studies exploring the evolution of such artefacts throughout the learning design life cycle. A deeper understanding of these evolutionary processes is needed – to help smooth the transitions between stages in the life cycle. In this paper, we introduce the four-dimensional framework for artefacts in design (4FAD) to generate understanding and facilitate the mapping of the evolution of learning design artefacts. We illustrate the value of the framework by applying it in the analysis of an authentic design case.
Special Issue on Learning Design Research: Mapping the terrain
Authors: Dobozy Eva , Cameron Leanne
Published: April 2018

Learning Design as a field of educational research and practice is gaining traction internationally. Not only is Learning Design now acknowledged as a complex and integrated process, demanding specialised knowledge and skills, it is a field of technology enhanced learning and teaching that is forward looking and globally focused. This special issue is unable to provide a unified position of what Learning Design is or resolve the debate, but it is able to contribute to a better understanding of the complexity of this field of educational research and practice. It also showcases some of the cutting edge work currently conducted internationally in Learning Design research and development
Long Path Towards to Success in Electrospun Nanofiber Yarn Production Since 1930’s: A Critical Review
Authors: Göktepe Fatma , Mülayim Beyza Buzol
Published: April 2018

Direct conversion of nanofibers into a yarn formed by electrospinning has begun to draw attention recently while pioneering attempts in fact go back to 1930s. Once nanofiber yarns are spun successfully by electrospinning, obviously, this would open new gates for many different applications. However, this is still a challenging task and there is no system accepted universally yet. There are more than 20 different approaches available so far but with serious limitations. In this review, they were categorized as (i) systems for production of parallel bundle of nanofibers and (ii) systems for production of twisted nanofiber yarns, presenting potential applicability of each with a critical point of view. The results show that some of the attempts mainly present basic conceptual ideas only. There are some works to produce real twisted nanofiber yarns continuously while mainly funnel, disc, or ring collectors have been used as the twisting element. However, there is limited information regarding stability of spinning system or control of yarn properties. This review also analyses the technical properties of electrospun nanofiber yarns summarizing the available data in terms of yarn properties such as fiber fineness, twist, production speed, mechanical properties, polymer types, and other important parameters available.
Crystal structure of poly[μ3-5-(4-(2,6-di(pyridine-2-yl)pyridine-4-yl)phenoxy)isophthalato-κ5
O:O′,O′′:N,N′,N′′cobalt(II)], C29H17CoN3O5
Authors: Liu Xue-Guo , Yan Wei-Hong , Xing Xiao-Jing , Fan Hui-Tao
Published: April 2018

C29H17CoN3O5, monoclinic, P21/c (no. 14), a = 11.1893(6) Å, b = 13.9922(10) Å, c = 14.1772(7) Å, β = 94.544(5)°, V = 2212.6(2) Å3, Z = 4, R
gt(F) = 0.0460, wR
ref(F
2) = 0.0975, T = 293(2) K.
Crystal structure of bis(9-aminoacridin-10-ium) tetrachloridocuprate(II) monohydrate, C26H24Cl4CuN4O
Authors: Sikorski Artur
Published: April 2018

C26H24Cl4CuN4O, triclinic, P1̄ (no. 2), a = 9.967(1) Å, b = 11.853(1) Å, c = 13.370(2) Å, α = 101.981(8)°, β = 106.586(8)°, γ = 113.856(9)°, V = 1287.0(3) Å3, Z = 2, R
gt(F) = 0.0300, wR
ref(F
2) = 0.0771, T = 295(2) K.
Novel diatom-FeO
x
composite as highly active catalyst in photodegradation of Rhodamine-6G
Authors: Gannavarapu Krishna Prasad , Thakkar Megha , Veerapaga Sidhartha , Wei Liping , Dandamudi Rajesh Babu , Mitra Somenath
Published: April 2018

We report the study of nanoporous silica-iron oxide composite generated from diatom frustules as a highly active catalyst for the photodegradation of the dye Rhodamine-6G. The unique architecture and high surface area of diatoms were utilized to immobilize iron oxide on their surface to form the composite. Photodegradation was carried out under 365-nm radiation and was observed using the absorption spectrum of the dye. The reaction was found to follow pseudo-first-order kinetics. The results were compared with commercially available granular iron oxide. The rate constant K (min−1) for photodegradation by the diatom composite was found to be as high as 0.0584 min−1 for diatom-FeO
x
composites, which is 52% higher than 0.0273 min−1 for granular FeO
x
at a dye concentration of 0.02 mm. The unique structural morphology and the synthetic strategy have led to the composites showing superior activity in the degradation of the dye Rhodamine-6G.
Wutausbrüche und Bittgesuche
Authors: Masina Filippo
Published: April 2018

Riassunto

L’articolo tratta delle misure assistenziali in pro dei sinistrati di guerra nell’Italia repubblicana, ma nell’ottica di inquadrare tali provvedimenti nel piu ampio contesto dei nuovi diritti di cittadinanza sanciti con la Carta costituzionale del 1947. Andando oltre il gia noto nesso tra warfare e welfare, l’articolo ricostruisce l’esercizio di tali nuovi diritti (un vero e proprio „diritto al benessere“ che, preso a „fondamento della nuova cittadinanza“, e stato giudicato come uno dei punti cardine della transizione tra guerra e dopoguerra) da parte di una categoria sovente giudicata dallo Stato meritevole delle piu ampie attenzioni, ma che lamento molto spesso la trascuratezza da parte delle istituzioni nel garantirle quanto stabilito dalla legge. L’ipotesi di partenza e, pertanto, che tali difficolta abbiano contribuito a minare l’affezione di una porzione non piccola della cittadinanza rispetto alle nuove istituzioni democratiche, molto fragili nei primi anni del dopoguerra. L’articolo analizza nello specifico alcuni casi di pratiche pensionistiche, relative a diverse categorie di beneficiari, afflitte pero dai medesimi problemi: in particolare, la lentezza talvolta sconcertante con cui il Dipartimento Generale delle Pensioni di Guerra - che pure era, in effetti, letteralmente inondata di domande di pensione - gestiva l’iter delle pratiche, tanto che alcune si sono trascinate sino agli anni ’90. Il cittadino che faceva richiesta di pensione di guerra (che spettava agli invalidi per cause di guerra con almeno il 30 per cento di capacita lavorativa perduta) doveva spesso attendere anni anche soltanto per avere una prima risposta. Cio provocava un fenomeno ricorrente, cioe quello di rivolgersi alle piu diverse personalita ed autorita politiche auspicando la loro intercessione: non percependo la forza del diritto, ci si rifugiava nella speranza di una generosita paternalistica. Talvolta, queste lettere - di rabbia, e di supplica - addirittura precedevano i gravi ritardi dell’espletamento delle pratiche, segnalando dunque l’esistenza di una consuetudine predemocratica nei suoi stessi presupposti. Uno dei segnali di una condizione di cittadinanza rimasta incompiuta.
Das faschistische System der sozialen Vorsorge im Spannungsverhältnis zwischen autoritären Maßnahmen und sozialer Integration
Authors: Giorgi Chiara
Published: April 2018

Riassunto

Il saggio ripercorre alcuni passaggi fondamentali inerenti lo sviluppo dello Stato sociale italiano durante gli anni del fascismo, inquadrandoli tanto nel dibattito storiografico piu recente, quanto nell’ambito di alcune issues nazionali e internazionali. In questo senso le politiche assicurative e previdenziali fasciste verranno prese in esame sia nel contesto piu complessivo della crescita delle politiche sociali degli anni Trenta (europee e non solo), sia in riferimento alle principali istituzioni italiane (in primis l’INFPS, l’Istituto nazionale fascista di previdenza sociale). In particolare il testo e teso a mettere in evidenza la centralita dell’esperienza fascista rispetto al consolidamento storico del welfare nazionale, i cui connotati originali si collocano proprio negli anni di costruzione del regime. Il periodo fascista pose infatti le basi di quel sistema cosiddetto „particolaristico-clientelare“ che si sarebbe poi sviluppato e intensificato nel secondo dopoguerra e che rappresenta, secondo varie voci storiografiche, il tratto piu distintivo della vicenda italiana. I dati conclusivi che emergono sono che, in relazione ad una media europea, l’Italia riusci a recuperare sotto il profilo quantitativo, aumentando la spesa per la sicurezza sociale e il grado di copertura assicurativa. Tuttavia, la cifra impressa dal regime al welfare nazionale ne avrebbe segnato gli sviluppi successivi, facendo emergere la centralita dell’esperienza fascista in ordine alle caratteristiche (e alle dimensioni) di quest’ultimo. Secondariamente, la riorganizzazione avvenuta sotto il fascismo dell’ambito assicurativo e previdenziale - in ordine all’estensione delle forme di tutela, del numero degli assistiti e soprattutto in materia di sistematizzazione - riguardo per lo piu gli aspetti gestionali. Invariata resto una politica di differenziazione delle spettanze che anzi venne accentuata e utilizzata dal regime ai fini del controllo sociale. Il fascismo infatti moltiplico forme e regimi assicurativi diversi e differenziati, nella misura, nella qualita e nel tempo. La ricostruzione delle vicende previdenziali italiane nel periodo tra le due guerre e cosi inserita in un piu ampio contesto sia geografico (europeo e d’Oltreoceano), sia economico, politico e sociale.
Das epistolarische Werk von Ferdinand Gregorovius. Eine Bestandsaufnahme
Authors: Steinsiek Angela
Published: April 2018

Riassunto

Quello di Ferdinand Gregorovius e uno dei piu importanti carteggi del XIX secolo. Nonostante gli sforzi dell’autore di sottrarre questa parte delle sue carte al pubblico, si sono conservate diverse migliaia di lettere che, accanto alla sua opera complessiva, rivestono un valore straordinario anche dal punto di vista letterario. Indispensabili sono le lettere per ricostruire la genesi dei suoi lavori, per comprenderne la qualita nella dialettica tra letteratura e scienza, per identificare i suoi scritti anonimi. Le sue corrispondenze con studiosi, nobili, politici, scrittori, artisti ed editori rappresentano nell’insieme un documento unico della storia politica e sociale, culturale e delle scienze nel XIX secolo e permettono di farsi un’idea concreta sulle vaste reti di contatto transnazionali non solo epistolari, ma anche personali, e sulle condizioni di lavoro di uno storico che svolgeva le sue attivita liberamente e in modo indipendente. Le sue corrispondenze, coprendo diversi decenni, mettono infine in luce i rapidi sviluppi che nella loro interazione contrassegnarono la storia italiana e tedesca dell’epoca.
Going Native or Remaining Foreign?
Authors: Amsler Nadine
Published: April 2018

Riassunto

Negli ultimi decenni la ricerca storica ha portato la propria attenzione sulle missioni cattoliche nell’Asia moderna in quanto laboratori di contatti culturali. Il passaggio da una visione eurocentrica ed espansionistica delle missioni a un quadro che metteva in risalto il ruolo di attori non europei e le specificita culturali dei cristianesimi sorti in area extraeuropea ha comportato una progressiva articolazione e specializzazione del discorso accademico sull’argomento. Un convegno svoltosi a Roma e dedicato ai missionari cattolici attivi nell’Asia moderna si e prefisso di radunare esperti delle varie regioni del continente al fine di promuovere un dialogo transregionale sul radicamento dei missionari nelle societa locali. L’autrice e uno degli organizzatori del convengo. Nel presente contributo colloca il convegno nel contesto delle ultime tendenze storiografiche, ne riassume i punti salienti e individua nuovi campi di ricerca.
Assessing Repeated-Sprint Ability in Division I Collegiate Women Soccer Players
Authors: Lockie Robert G. , Liu Tricia M. , Stage Alyssa A. , Lazar Adrina , Giuliano Dominic V. , Hurley Jillian M. , Torne Ibett A. , Beiley Megan D. , Birmingham-Babauta Samantha A. , Stokes John J. , Risso Fabrice G. , Davis DeShaun L. , Moreno Matthew R. , Orjalo Ashley J.
Published: April 2018

Lockie, RG, Liu, TM, Stage, AA, Lazar, A, Giuliano, DV, Hurley, JM, Torne, IA, Beiley, MD, Birmingham-Babauta, SA, Stokes, JJ, Risso, FG, Davis, DL, Moreno, MR, and Orjalo, AJ. Assessing repeated-sprint ability in Division I collegiate women soccer players. J Strength Cond Res 34(7): 2015–2023, 2020—Repeated-sprint ability (RSA) is a key component of soccer, and is the capacity to repeatedly produce near-maximal to maximal sprints with short recovery periods. Repeated-sprint ability has received little analysis in collegiate women soccer players. The purpose of this study was to investigate relationships between RSA and tests of soccer-specific performance. Nineteen players from the same Division I collegiate women's soccer team were recruited. The RSA test consisted of six 20-m sprints completed on 15-second cycles. The measurements taken were total time (TT) and percent decrement (PD; percent change from first to last sprint). Subjects also completed tests of: lower-body strength (1 repetition maximum [1RM] back squat); jump performance (vertical and standing long jumps); linear (0–5, 0–10, and 0–30 m sprint intervals) and change-of-direction (505 from each leg) speed; and soccer-specific fitness (Yo-Yo intermittent recovery test level 1 [YYIRT1]). Pearson's correlations (p ≤ 0.05) were used to calculate relationships between RSA TT and PD with the performance tests. Total time exhibited significant relationships with the 0–10 (r = 0.50) and 0–30 m (r = 0.71) sprint intervals, and the left-leg 505 (r = 0.57). However, lower-body strength measured by the 1RM back squat and jump performance did not relate to TT. Percent decrement correlated only with the left-leg 505 (r = 0.53) and no other performance test. This included the YYIRT1, although both PD and YYIRT1 performance are limited by fatigue. The results from this study indicated that faster linear sprinting speed could positively influence RSA in Division I collegiate women soccer players.
Relationship Between Selected Physical Qualities, Bowling Kinematics, and Pace Bowling Skill in Club-Standard Cricketers
Authors: Feros Simon A. , Young Warren B. , O'Brien Brendan J.
Published: April 2018

Feros, SA, Young, WB, and O'Brien, BJ. Relationship between selected physical qualities, bowling kinematics, and pace bowling skill in club-standard cricketers. J Strength Cond Res 33(10): 2812–2825, 2019—Although strength and conditioning of cricket pace bowlers has become more specialized in recent times, little is understood about the interplay between physical capacities, pace bowling kinematics, and pace bowling skill measures. This study sought to determine these interrelationships. Thirty-one male club-standard pace bowlers completed 3 test sessions on separate occasions 4–7 days apart. The first testing session comprised an 8-over pace bowling assessment, where bowling skill and selected bowling kinematics were measured. A physical test battery was completed over the remaining 2 sessions. Peak and mean ball release (BR) speed were related with 1 repetition maximum pull-up strength (r

s
= 0.56, p = 0.005) and correlated with 20-m sprint time (r

s
= −0.42, p = 0.022; r

s
= −0.37, p = 0.044, respectively). Mean radial error was associated with 10-m and 20-m sprint times (r

s
= 0.41, p = 0.030; r

s
= 0.38, p = 0.037, respectively), and correlated with height and peak power from 3 countermovement jumps (CMJs) (r

s
= −0.39, p = 0.036; r

s
= −0.41, p = 0.031, respectively), and mean peak power from 20 CMJs (r

s
= −0.45, p = 0.020). Bivariate variable error was correlated with front-leg extension angle at BR (r

s
= 0.41, p = 0.036), and also with approach speed (r

s
= −0.36, p = 0.050). These relationships may assist strength and conditioning coaches in designing more effective training programs to enhance bowling speed and accuracy. Training interventions are warranted, however, to validate these associations.
Structure and magnetic properties of Si0.97Ge0.03 whiskers
Authors: Pavlovskyy Yu. V. , Luka G. , Ostrovskyy I.P. , Pavlovska N.T.
Published: April 2018

By the method of chemical transport reactions in the closed halogen system Si-Au-Pt-B-Br, whiskers Si1-xGex x = 0.01-0.08 of transverse dimensions 0.1-100 μm were grown. Structural and magnetic properties of the obtained crystals are investigated. The method of scanning electron microscopy showeds that on the surface of needle-like crystals, with transverse dimensions of 50-80 microns, a porous shell with a thickness of 50-60 nm is present. From the analysis of the energy spectra of X-rays, it was found that the surface shell contains significant concentration atoms of oxygen and of carbon. In turn, oxygen and carbon peaks were not detected on the inner layers of samples. It has been established that the chemical etching of the surface layer of crystals leads to the improvement of their structural and magnetic properties.
Consideration of Boundary Conditions in the Scattering of Laser Radiation by Rough Fractal Surfaces
Authors: Havryliuk O.O. , Semchuk O.Yu.
Published: April 2018

The work within the scalar theory of Kirchhoff, solved the problem of scattering of laser light rough surface for the simulation which used two-dimensional modified Weierstrass function with a finite number of harmonics. Based on the analytical solution found numerically calculated scattering indicatrix laser fractal surfaces of several types for different angles of incidence and created a catalog of various specific types of scattering surfaces based on the Weierstrass function and the corresponding three-dimensional scattering indicatrix ln < rs > . It is shown that when scattering light by a surface of a fractal relief, the law of mirror reflection is violated, and the scattering image contains bursts of intensity in different directions.
Isochronal Annealing of Electron-Irradiated Tungsten Modelled by CD Method: 1D and 3DModel of SIA Diffusivity
Authors: Kondria M. S. , Gokhman A. R.
Published: April 2018

The evolution of the microstructure of tungsten under electron irradiation and post-irradiation annealing hasbeen modeled using a multiscale approach based on Cluster Dynamics simulations. In these simulations, bothself-interstitials atoms (SIA) and vacancies, carbon atoms isolated or in clusters, are considered. Isochronal annealing has been simulated in carbon free tungsten and tungsten with carbon, focusing on the recovery stages I and II. The carbon atom, single SIA, single vacancy and vacancy clusters with sizes up to four are treated as the mobile pieces. Their diffusivities as well as the energy formation and binding energies are based on the  experimental data and ab initio predictions and some of these parameters have been slightly  adjusted, without modifying the interaction character, on isochronal annealing experimental data. The both models with assumption on 1D as well as 3D dimensionality of diffusivity of SIA are treated. The advantage of the model with 1D diffusivity of SIA is found.
Cool Air-Gas Mixtures with Combustible Gas Admixtures Steady Flameless Combustion Delay Time on Platinum Particle (Wire)
Authors: Kalinchak V. V. , Chernenko O. C. , Sikorskyi M. V. , Sofronkov O. N. , Fedorenko A. V.
Published: April 2018

The proposed work shows analytical way to find a build-up time (induction period) for a mode of steady flameless catalytic combustion on metallic wire for cool air-gas mixtures with combustible gaseous admixtures using as an example flameless combustion of air-gas mixtures with hydrogen admixture of a platinum wire. Steady flameless combustion is observable after an induction period due to increase of initial catalyst temperature exceeding critical point of ignition which depends on particle diameter and combustible gaseous admixture content. Total time of build-up time is split into two stages, being the time of catalytic reaction proceeding in transient and diffusion stages, respectively. Effects of combustible gas ratio, catalyst wire diameter and excess of initial temperature compared with point of ignition upon particular stages duration and induction period are illustrated.
Features of time characteristics of diffusion properties of polymer modified film materials for technical application
Authors: Domantsevych N. I. , Yatsyshyn B.P. , Kril’ M.N.
Published: April 2018

The changes of the oxygen permeability of packings from polymeric film materials intended for prolonged storage of metal products have been investigated. High indexes of initial oxygen permeability were recorded due to insecure insulating properties of weld seams, as well as increased diffusion characteristics after the third year of exploitation, The most characteristic structural defects, which emerging in polyethylene modified materials during the period of prolonged storage , have been identified by means of electron microscopic studies.
A High-Quality Reference Genome for the Invasive Mosquitofish Gambusia affinis Using a Chicago Library
Authors: Hoffberg Sandra L , Troendle Nicholas J , Glenn Travis C , Mahmud Ousman , Louha Swarnali , Chalopin Domitille , Bennetzen Jeffrey L , Mauricio Rodney
Published: April 2018

The western mosquitofish, Gambusia affinis, is a freshwater poecilid fish native to the southeastern United States but with a global distribution due to widespread human introduction. Gambusia affinis has been used as a model species for a broad range of evolutionary and ecological studies. We sequenced the genome of a male G. affinis to facilitate genetic studies in diverse fields including invasion biology and comparative genetics. We generated Illumina short read data from paired-end libraries and in vitro proximity-ligation libraries. We obtained 54.9× coverage, N50 contig length of 17.6 kb, and N50 scaffold length of 6.65 Mb. Compared to two other species in the Poeciliidae family, G. affinis has slightly fewer genes that have shorter total, exon, and intron length on average. Using a set of universal single-copy orthologs in fish genomes, we found 95.5% of these genes were complete in the G. affinis assembly. The number of transposable elements in the G. affinis assembly is similar to those of closely related species. The high-quality genome sequence and annotations we report will be valuable resources for scientists to map the genetic architecture of traits of interest in this species.
The influence of seasonal factors on the content of keratoses, free internal lipids, and physical characteristics of sheep wool
Authors: Tkachuk V. M. , Stapay P. V. , Motko N. R.
Published: April 2018

Wool formation is a complex and multifaceted process, which depend on a lot of factors, namely genetic, alimentary, animal maintenance conditions, including seasonal factors’ impact. Seasonal weather changes or so-called photoperiodism, changing the retention and feeding regimes by periods of the year, highly correlate with the physiological state of the organism of the sheep and influence the growth and quality of the wool. Given this the purpose of our work was to investigate the impact of the season on the macrostructure, chemical composition and physical properties of wool. For the research wool of ewe breed precos was used, the samples of which were taken in different seasons, in particular winter, spring, summer and autumn periods of animal maintenance. In the wool there were determined the contents of keratoses and free internal lipids, as well as the strength of the fibers at the break. It was established that wool that grew in the winter and spring period contains the largest amount of protein macro- and microfiber, i.e. alpha keratosis. Instead, with the onset of summer and until autumn the amount of this fraction decreased by an average of 2%. A similar trend was observed on the part of beta keratosis, however, these changes were less significant and did not exceed one percent. It has been established that the content of gamma keratosis, i.e. matrix of fiber, is on the highest level in summer and spring periods, that is, the periods of the best alimentary provision of animals. In the pasture period in the sheep wool there is the biggest amount of free internal lipids (1.1%). In the autumn period, their number begins to decrease gradually and the lowest one is recorded in the winter-stool period (0.9%). The most distinct seasonal changes among these lipids are fixed by cholesterol factions. In particular, the largest number of unesterified cholesterol is contained in the wool of winter growth – 67.2%. With the onset of spring the amount of this fraction decreases up to 62.3% (Р < 0.01) and the trend continues in the summer (61.6%, Р < 0.001) and autumn (60.8%, Р < 0.01) periods. Regarding unesterified cholesterol, there is a diametrically opposite picture of changes. It was established that the strength of the wool of the summer-autumn growth period is bigger by 12%, in comparison with the wool that grew in the winter-stool period. It is shown that there is a positive correlation between the strength of fibers and the content of ceramides in them, which in the winter period was 0.923, in the spring one was 0.989, for summer it was 0.827, in autumn it was 0.786.
Agriculture of Horodok District: Environmental and Economic Analysis and Perspectives
Authors: Paranjak R. P. , Kalyn B. M. , Kozynyak R. Yu.
Published: April 2018

The article analyzes the state and dynamics of the main indicators of agricultural development in the Horodok district. The national economic and ecological aspects of the development of the complex and the factors influencing its condition were studied. It was indicated on the connection of the efficiency of agricultural production with the state of soils, water, infrastructure provision and the general state of the economy of the territory. The main negative impacts of intensive agricultural development on natural ecosystems and the state of the environment are outlined. The basic link of agrosphere in the region is agriculture. In the conditions of the Horodok distric, the main risks of the development of agriculture are related with a high proportion of land involved in agriculture, and a high indicator of their rooting: environmentally sustainable systems account for less than half of all land. In addition, the aggravated structure of agro industrial production is associated with the dominant role of plant growing, which is mainly represented by monocultures, which increases the need for mineral fertilizers and pesticides, enhances instability of agro ecosystems and increases the risk of contamination of surface water in the district. In terms of efficiency and productivity, the agro complex of the district is close to the regional average. Attention is need to the poor state of infrastructure provision and the potential problems of labor resources. Strategic directions of agrosphere development today are connected with the formation of rational, ecologically safe and sustainable land use development, and from the economic point of view it is necessary to develop the most effective directions. In order to ensure sustainable growth of the agricultural complex of the region, attention should be paid to the diversification of crop production, balanced support to the animal sub-sector, social and infrastructure problems, and to outline the directions of exit of enterprises of the district into world markets.
The influence of living mass of the ukrainian black and white dairy breed cells in various everyday periods on their more dairy productivity
Authors: Ferenz L. V. , Polylikh M. I. , Ilnitskaya G. I.
Published: April 2018

The connection of live weight of cows of Ukrainian black-and-white milk breed in the conditions of the Carpathian region of Lviv region in different ages with their subsequent milk productivity is established. It was investigated that live weight during the period of individual growth and development of animals has a significant impact on hopes, the content of fat in milk and the amount of milk fat. The difference in liveliness between cows with live weight at the first insemination to 300 and 361–380 kg for the first lactation was 249.3, for the second – 500.7 (P < 0.002), for the third – 97.0 kg, and for the highest – 405.5 kg (P < 0.01). Between cows with live weight at the first insemination of 361–380 and 401–420 kg, this difference was 185.1, 319.9 (P < 0.05), 38.7 and 265.3 kg respectively (P < 0.05). According to the results of the research, it can be stated that the optimum live weight during the period of raising cows at 6 months of age is a live weight of 160–180 kg, at 12 months of age it is 260–280 kg and the highest rates are obtained from cows that were growing at 18-months of age had a live weight of 360–380 kg. From the results of our research, it follows that for the Ukrainian black-and-white milk breed in the conditions of the Carpathian region of Lviv, the optimum live weight at the first insemination is 361–380 kg. The share of influence on milk production of live weight of cows during their growing period: at 6 months of age on hopes – 13.53–27.56%, on the fat content in milk – 15.18–39.70 and on the amount of milk fat 11.89–39.41%; at 12 months of age – respectively 24.65–37.84, 23.45–33.0 and 23.37–35.17%; in the 18-month – 27.38–40.93, 29.12–33.23 and 25.81–39.10%, and at the first insemination – 21.59–40.08, 31.32–39.99 and 21.52–39.88% at P < 0.05–0.001. The probable correlation coefficients between the live weight of cows at 6 months of age and the reliance on second, third and highest lactation were 0.163–0.2253 and between live weight and fat content in milk – 0.110–0.233, between live weight at 12 months of age and the expectation for the second, the third and highest lactation – 0.233–0.240 and between the live weight and the amount of milk fat – 0.127–0.202, at the age of 18 months and for the second, third and highest lactation – 0.246–0.337 and between the live weight and the amount of milk fat – 0.116–0.308, and at the first insemination – 0.135–0.195 and 0.118–0.188 respectively at P < 0.005 – P < 0.001.
The cattle genome features
Authors: Kostenko S. O.
Published: April 2018

Boss taurus is not only an important agricultural species, which during the last 8–10 thousand years since domestication served to humanity as a reliable source of milk, meat, skin, and cattle, is a successful object for the study of obesity, gynecological and infectious diseases of man. Cows are successfully used as a model organism in endocrinology, physiology and reproductive biotechnology. Today, in the world, the number of ruminants – large and small cattle, namely – buffaloes, sheep and goats is estimated at around 3.4 billion. About three-fourths of the world's agricultural land produces fodder suitable for the grazing of these ruminants, which have an amazing ability to effectively convert low-quality vegetable fibers, which are often not suitable for human use, into energy-intensive fat, muscle and milk. This biological process has long been used by humanity, which in the process of breeding has created more than 800 breeds of cattle, which is an important world heritage and a unique scientific resource. The B. taurus genome is estimated at 3000 MB, arranged in 29 pairs of acrocentric autosomes and two sex chromosomes. The sequencing of the bovine genome was conducted by a consortium of more than 300 scientists from 25 different countries. The results of the analysis of the genome are presented in the database ncbi. For the first time, it was sequenced by the genome of one inverted cow of the Hereford breed, L1 Dominette. In addition, today's well-known information on the sequence of six species animals, which identified SNP, was the main resource for the HapMap project, which used 34.470 of them in their analyzes, the EST collection and about 10.000 full-screen cDNA sequences. A genomic card of cattle based on high-density bonds is also reported. The World Society has created and actively used databases containing information on the sequence of genomes, genes, proteins, and their polymorphism. Particular attention deserves descriptions of the results of the analysis of single-nucleotide polymorphism, which allows us to analyze the evolutionary history of phylogenetic bonds in the middle of the species and between different species. The analysis of the associated quantitative features of the loci gives the scientific community additional confidence in identifying the polymorphism of genes, which is the basis of animal productivity. The QTL database contains data on 108 040 bovine cattle, which are associated with 579 different quantitative features. With the polymorphism of individual genes, harmful mutations are associated with the genetic load of populations. To date, 519 traits (disorders) have been described, 203 of them are considered by potential models for research on human diseases. A connection was found between the mutations that caused the 145 polymorphisms.
Numerical simulation of fluid mud layer under current and waves in estuaries and coastal areas
Authors: Chung Dang Huu
Published: April 2018

The formation and development of fluid mud layer under the both factors of current and wave that often happens in estuaries and coastal areas are studied in detail through numerical simulation on the basis of the 2D shallow water equations for tidal flow, the advection-diffusion equation for cohesive sediment transport and the equations for fluid mud transport. At the same time the model for wave propagation is also included. Numerical solution of a special case for a part of the Severn estuary is obtained using the finite difference method as an illustration of the applicability of the model in practice.
Parametric vibration of the prismatic shaft with hereditary and nonlinear geometry
Authors: Da Hoang Van
Published: April 2018

None
Earthquake resistant design of underground structures and pipes
Authors: Kraus Dieter
Published: April 2018

Underground Structures and Pipes can be analyzed as slender structures completely embedded in the soil. For the dynamical analysis soil and structure can be investigated by decoupled structural models. The horizontal layer system of the soil is modeled as a shear beam while for the structure a flexural beam is used. Both models will be finally coupled by elastic foundation.
Elasto-plastic stability of thin plates subjected to complex loading process
Authors: Bich Dao Huy
Published: April 2018

Analyzing an elastic-plastic stability problem, the complex loading process acted on the body has an essential influence on the values of critical loads. For clearing up this effect, in the present paper the general elasto-plastic process theory, theory of process with average curvature and the simple loading process theory are applied into the consideration of the mentioned problem. A numerical comparison is given.
Non-linear oscillations of pendulum with vertically moving multifrequency support point
Authors: Chi Tran Kim
Published: April 2018

None
Suspended sediment concentration distribution in an alluvial channel flow
Authors: Chung Dang Huu
Published: April 2018

In this paper a numerical solution for the problem on suspended sediment concentration distribution in an alluvial channel flow has been computed on the base of PROFILE model proposed by L. C. Van Rijn for the case of uniform flow. Although, in the present case, mathematical model is quite simple, but it is exact enough to apply to Somme problems in practice. The aim of the paper is that the author would like to use the finite difference method for the same problem. The input data was used from experiment flume. The result showed that the concentration distribution fast decreased along the channel and concentration gradients became very small at the sections situated far enough from the upstream. Besides, a computing program me with the ability of graphic expression was established.
Wave forces on fixed vertical axisymmetric bodies
Authors: Dat Nguyen Tien
Published: April 2018

In this paper, wave forces on fixed vertical axisymmetric bodies are considered by the hybrid boundary element method. A program package on Fortran IV on PC has been developed and applied for the cases of a vertical circular (large and small diameter), step circular cylinder, circular dock, ... The results have been given good agreement with the one obtained by others.
Forced oscillation of the rectangular thin plate on the elastic foundation with two coefficients
Authors: Da Hoang Van
Published: April 2018

None
Tính toán sự phân bố ứng suất xung quanh thành lỗ khoan dựa trên các mô hình đàn hồi tổng quát
Authors: M. Hajal , M. Drayer , Hao Le Phuoc
Published: April 2018

None
Computer aided simulation for non-linear model of ship motion
Authors: Le Nguyen Nhat
Published: April 2018

The ship motion is simulated on computer by non-linear model of small vibration and strong non-linear model. The results are compared between two models. The influences of different parameters to the ship motion are considered.
On the simulation technique of stochastic processes and nonlinear vibrations
Authors: Menh Nguyen Cao , Tri Tran Duong
Published: April 2018

In this paper the procedure and program for simulation of stochastic processes are represented. The program is applied to nonlinear mechanical systems subjected to stochastic stationary excitation. The results obtained are compared with the ones from other methods which are used for estimating the exactitude of simulation technique.
Governing equations for acid water in canals
Authors: Dac Nguyen Tat
Published: April 2018

It is given in this study governing equation system formulation for acid water movement in canals, especially, in the Plain of Reeds of Vietnam where the urbanite equilibrium is found dominant. It is assumed in the model a chemical equilibrium, however a kinetic treatment is also used to deal with dissolution of precipitates and sedimentation.
Mean square error of the traditional replacement for the linear mechanical system
Authors: Anh Nguyen Dong
Published: April 2018

The error between mean square responses of the original mechanical linear system and the system obtained by using the traditional replacement is investigated. As a result, a modified replacement is proposed which gives zero-error for the mean square responses.
On the motion of incompressible viscous fluid with flotation on free surface
Authors: Ha Tran Thu
Published: April 2018

None
On the stability of thin plates subjected to biaxial compressions of complex loading
Authors: Dung Dao Van
Published: April 2018

In this paper, the method for calculating an expression of critical forces in general case has been presented. As for its application, using computer programming in Pascal we've found the value of critical forces. The influence of complex loading on the stability of plates has been studied.
A numerical algorithm for optimal location of an air-pollution object
Authors: Duc Nguyen The , Tran Tran Van
Published: April 2018

On the base of the method suggested by G. I. Marchuc for the problem of optimal location of an air-pollution object1 such as newly built plant1 in a region in which one or several habitations arrange, in this paper a numerical algorithm is proposed. The Hybrid scheme applied for the three-dimensional transport equation permits to integrate it with large enough time step that is very important factor when the program is running on PC. As an example, a calculation for an arbitrary wind field is conducted.
On the motion of Gyroscop
Authors: Huyen Pham , Mau Nguyen Thanh
Published: April 2018

In this work the authors had studied the motion of Gyro in mobile basis. Introducing the uncountable by degree units the differential equation system is coming to the stand art form, which can be solver by the method of separation motion. Computed result is the exponential function.
Tương tác giữa vỏ trụ với môi trường đàn hồi phi tuyến
Authors: Thinh Nguyen Hoa
Published: April 2018

None
The local theory of elastoplastic deformation processes and the stability beyond elastic limits of thin-walled structures subjected to complex loading
Authors: Bich Dao Huy
Published: April 2018

The paper is concerned with the complete constitutive relations of elasto-plastic deformation process theory. Using this theory the stability beyond elastic limits of thin-walled structures subjected to complex loading is analyzed. The proposed method of loading parameter is a combination of numerical and analytical solutions. Calculations have been carried out for rectangular plates and cylindrical shells in order to compare this method and its results with other theoretical and experimental works.