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May 30, 2018Open Access
The purpose of this study was to verify the association between physical activity frequency and quality of life among fitness centers goers. Participants were 299 individuals of both genders, who attended eight fitness centers. For the collect of sociodemographic data, weekly frequency, duration and time of practice of physical activity, a biosociodemographic questionnaire was used. The quality of life was measured using the WHOQO ...
May 29, 2018Open Access
The basis of genetics
should be the hereditary material which should be able to produce the
individual. DNA (Genes) is ever regarded as the producer of the individual. However,
DNA being lack of producing force can not produce the individual. So, this
paper’s task is to look for another element, producing force, which along with
genes (DNA) forms the hereditary material. And finally the paper ...
May 28, 2018Open Access
This article gives a brief review of scientific researches of high-alloyed chromium-nickel steels stress corrosion cracking (SCC) process of welded joints. Welded joints are one of the most complex objects from the standpoint of the general theory of corrosion fatigue of metals. During their operation a number of problems arise related to the heterogeneity of the material properties, the complexity of the structure, the presence o ...
May 25, 2018Open Access
Introduction: A
fragmentation pathway of atorvastatin de-protonated ion was proposed based on
rational interpretation workflows. Method: The
mass spectral data (MS, MS/MS and MS3) of atorvastatin was obtained
by electrospray negative ionization mode with flow injection analysis; using
liquid chromatography systems coupled with tandem mass spectr ...
May 25, 2018Open Access
In order to study the
steam reforming process of dimethyl ether, a kind of reformer reactor with
thermal jacket, heat pipe and catalytic reaction bed was designed. The effects
of reaction gas temperature, molar ratio of water to ether and the structure
parameters of the reactor on the conversion of dimethyl ether, the yield of hydrogen,
the hydrogen concentration at the outlet of the reactor a ...
May 24, 2018Open Access
Enrichment and
purification of ursolic acid from Cynomorium
songaricum exacts were studied using five macroporous resins. The static
tests indicated that D101 resin was appropriate and its adsorption data were
well fitted to the Langmuir and Freundlich isotherms. To optimize the
separation process, dynamic adsorption and desorption tests were carried out.
The op ...
May 24, 2018Open Access
Haar wavelets are applied for solution of three
dimensional partial differential equations (PDEs) or time depending two dimensional
PDEs. The proposed method is mathematically simple and fast. Two techniques are used in numerical solution, the first based on
2D-Haar wavelets and the second based on 3D-Haar wavelets and we compare them.
To demonstrate the efficiency of the method, two test prob ...
May 24, 2018Open Access
This preliminary paper discusses the creation of an
agent based model for a signalized traffic intersection derived from a
previously developed mathematical vehicle-following micro-simulation model. The
results of the agent based model are compared to the results from the
mathematical model for verification purposes. The agent based model is then
used to show the effects of inclement weather on vehicle throughput at a
traffic inte ...
May 24, 2018Open Access
This paper mainly adopts
the panel data of listed company in GEM from 2012 to 2016, with the threshold
panel model, Deeply
studying the influence of R & D investment intensity on enterprise
performance, and discovering that R&D
intensity has a double threshold effect on enterprise performance. When the
sustainable ability of research and development activities is lower than the
first threshold va ...
May 24, 2018Open Access
Core competence of senior
citizen education teachers can play an important role in defining professional
standards of senior citizen education teachers, becoming a professional
threshold, measuring the core of teachers’ professional development, assessing
the current performance management, and being the tool for teachers’ self-evaluation.
The index system of core competence of senior citizen education t ...
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