Документ взят из кэша поисковой машины. Адрес оригинального документа : http://mavr.sao.ru/hq/lib/SAP_Newsletter-March Дата изменения: Mon Mar 18 14:30:21 2013 Дата индексирования: Thu Feb 27 23:31:44 2014 Кодировка: Поисковые слова: ngc 6520

Welcome to the March, 2013 edition of SAP newsletter, providing monthly
summaries of articles on science & education related topics of interest to
scientist and professionals. The mission of our journals is to provide an
open access forum for publishing new findings on issues pertinent to
scientific and academic field. We also invite you to submit original
research papers, review articles, short reports, or case studies are
considered for publication in our Multidisciplinary Journals.
Special Offers: Currently, SAP is determined to offer special discounts on
the publication fees for any submissions within March 10, 2013 ~May 31,
2013 for the sake of broader dissemination of scientific research results
with minimum financial burden. During this duration, authors will be
benefit from a lower publication fee of $200. Authors from developing
countries only need to pay $90.
The following newly-published articles are listed for your reference.
HEADLINES AT A GLANCE:
. Arabic Teaching and Learning System at Some Celebrated Institutions of
Higher Education in Europe and United States

. Finite Element Modeling of Composite Materials Subjected to the Low
Velocity Impact Damage

. Properties of the Binary Hypercube and Middle Level Graphs

. Electrical Network Reduction for Load Flow and Short-Circuit Calculations
using PowerFactory Software

. Biodegradable Poly-pentadecalactone (PDL) Synthesis via Synergistic
Lipase and Microwave Catalysis

. A New Technique to Absorb Yellow GX Anionic Pigments

. Study of New Type Lasers Cavity for Solar Pumped Laser System

. Validation of Cefazolin Sodium by UV-Spectrophotometric Method

. Water Repellent Polymer Coating Based on Oligopiperillenestryrene and
Alkoxysilane

. Test Validation Process of Tactical Knowledge in Tennis: the Influence of
Practice Time and Competitive Experience

. Is Planck's Constant - A Cosmological Variable?

. Special Issue - Call for Papers
New Journal : Journal of Laboratory Chemical Education Editor-in-chief:
Prof. Dr. Gary W Breton
Journal Subject: Journal List
Education: Arabic Teaching and Learning System at Some Celebrated
Institutions of Higher Education in Europe and United States
This article explains teaching and learning system of Arabic in six noted
Universities of Europe (Heidelberg, Leiden, The Sorbonne III, Cambridge,
Louvain and Copenhagen) and five celebrated Institutions of United States
(Berkeley, Yale, Georgetown, Harvard and Pennsylvania) according to several
academic stays made by Professor Arvide, with the help of scientific
grants, in order to do a study on the training ways of Arabic used in their
Departments of Arabic Language and Literature, looking at the training
methods of each one of them and analyzing her own experience as a teacher
in Spain. The article has also reference to the connection of these
training ways to the Higher Education in Europe and United States and their
comparison to the Spanish system with special mention to the University of
Almeria where she works. It also encloses thirteen final conclusions. Click
Here to View Full Article
American Journal of Materials Science: Finite Element Modeling of Composite
Materials Subjected to the Low Velocity Impact Damage
In this paper, the low velocity impact behavior of a composite material was
investigated using the LS DYNA a finite element package. In order to
investigate the damage produced by different impactors, three shape
impactors were chosen (ball, cylinder, and truncated cone). The impactors
impact the plate with a velocity of 6m/s. The composite was a carbon
fiber/epoxy of sequence stacking[45/0/-45/90]s. All the impactors dropped
the plate at the center. In order to study the effect of the inclination of
the laminated plate, three different inclination angles were chosen (30, 45
and 60њ). The loads, the impact energy, the displacements and the Von Mises
stresses were computed and represented in a different graphs en function of
the time of the impact. The truncated cone and a cylinder provide a higher
impact forces and a displacements (great damaged zone). In the case of an
angle of 30њ, the ball produced a higher displacement and impact energy.
Click Here to View Full Article
Applied Mathematics: Properties of the Binary Hypercube and Middle Level
Graphs
This paper takes a look at various properties of binary hypercubes and
middle level graphs, a particular subgraph of the binary hypercube. The
intention is to shed some light on the middle level conjecture by
discovering patterns within the subgraphs and the known Hamiltonian cycles
for those graphs. The problem is closely related to determining
Hamiltonicity of graphs and is also closely tied to Gray code cycles and
binary sequences. Click Here to View Full Article
Electrical and Electronic Engineering: Electrical Network Reduction for
Load Flow and Short-Circuit Calculations using PowerFactory Software
The primary purpose in constructing equivalents is to represent a portion
of a network containing many buses but having only a few boundary buses by
a reduced network containing only the boundary buses and, perhaps, a few
selected buses from within the original sub-network. The equivalent
constructed gives an exact reproduction of the self and transfer impedances
of the external system as seen from its boundary buses. PowerFactory's
network reduction algorithm produces an equivalent representation of the
reduced part of the network and calculates its parameters. This equivalent
representation is valid for both load flow and short-circuit calculations,
including asymmetrical faults (that is, single-phase faults). Click Here to
View Full Article
American Journal of Biomedical Engineering: Biodegradable Poly-
pentadecalactone (PDL) Synthesis via Synergistic Lipase and Microwave
Catalysis
A large number of currently used synthetic biodegradable polymers in
biomedical engineering applications are polyesters based materials and thus
research on the synthesis, properties, manufacturing and processing of
aliphatic polyesters continues to be of great importance. Poly-?-
pentadecalactone (PPDL) a lactone based ring opening polymer has good
mechanical properties and the presence of hydrolysable ester linkages along
the polymer chain making it desirable as a biodegradable material for
diversified biomedical engineering applications. In this paper we report
the formation of PPDL using the synergistic effects of lipase and microwave
(MW) technology. The effect of reaction time on the PPDL polymer chain
growth has been investigated. Click Here to View Full Article
American Journal of Chemistry: A New Technique to Absorb Yellow GX Anionic
Pigments
Here we aim to absorb yellow GX anionic pigments through Mg-Fe layered-
double-hydroxide nanoparticles, which were synthesized from Iron(III)
nitrate nonahydrate and Manganese(II) nitrate hexahydrate with a molar
ratio of Mg/Fe=2:1 by a hydrothermal process (>100?). The synthesized
nanoparticles were studied using the Fourier transform infrared
spectroscopy, X-ray diffraction, and scanning electron microscope. The
obtained data were analyzed by the Debye-Scherrer method. The absorption of
yellow GX anionic pigments by these nanoparticles was investigated through
UV-Vis photometry at different pH, reaction time, and temperatures. The
results suggest that a rise in temperature leads to a gradual increase in
absorption. Click Here to View Full Article
International Journal of Optics and Applications: Study of New Type Lasers
Cavity for Solar Pumped Laser System
In this work new hybrid pumping methods have been developed using cone
mirror type cavity. These types could provide pumped light from many
directions on the laser active media. Low threshold pumping has been
achieved, with low cost. Click Here to View Full Article
Physical Chemistry: Validation of Cefazolin Sodium by UV-Spectrophotometric
Method
A simple, fast and reproducible UV Spectrophotometric method was developed
and validated for quantification of cefazolin sodium in pharmaceutical form
powder for injectable solution, the method proved effective, easy
applicability, low cost, besides it does not generate toxic wastes to the
operator and the environment, corroborating with the routine analysis of
quality control to ensure the therapeutic efficacy of the drug already
marketed. The method presented being capable to detect and quantify the
drug obtaining satisfactory results regarding specificity, precision,
accuracy and robustness, linear range of 8 to 28 µg/mL, showing correlation
coefficient of 0.9999 when analyzed in the wavelenght ?=270 nm
spectrophotometer. Click Here to View Full Article
American Journal of Polymer Science: Water Repellent Polymer Coating Based
on Oligopiperillenestryrene and Alkoxysilane
In the present article a creation of new water repellent materials based on
oligopiperillenestyrene modified by tetraethoxysilane is considered. A
nanostructure of coating surface and influence of polymer material
component's staff and nature on polymer properties are researched. The
materials are dedicated for protection of buildings from negative factors.
Click Here to View Full Article
International Journal of Sports Science: Test Validation Process of
Tactical Knowledge in Tennis: the Influence of Practice Time and
Competitive Experience
This paper describes the development process to test validation of t
declarative tactical knowledge in tennis since the scenes definition to the
items validation up to the application of pilot test. Based on the theory
of the latent trait the psychometric requirements searching for the
validation of the constructs perception and decision making, were properly
respected. Was reached to satisfactory values of content validity (0.89),
reliability with ?=0,6518 and difficulty items index. After the test
application there was a significant correlation between the perception and
decision making (r=0,612). Were found evidences of practice time and
participation in competitions in higher levels influences in improvement of
the tactical knowledge level of young tennis players. Click Here to View
Full Article
International Journal of Astronomy: Is Planck's Constant - A Cosmological
Variable?
Within the expanding cosmic Hubble volume, Hubble length can be considered
as the gravitational or electromagnetic interaction range. Product of
'Hubble volume' and 'cosmic critical density' can be called as the 'Hubble
mass'. Based on this cosmic mass unit, authors noticed five peculiar semi
empirical relations in atomic, nuclear and cosmic physics. With these
applications it is possible to say that - during the cosmic evolution,
magnitude of Planck's constant increases with increasing cosmic time. This
may be the root cause of observed cosmic red shifts. By observing the
cosmological rate of change in Planck's constant, the future cosmic
acceleration can be verified from the ground based laboratory experiments.
With reference to the current concepts of distant and spatial variation of
the fine structure ratio, variation of the planck's constant can be
considered for further analysis. Click Here to View Full Article

Special Issue - Call for Papers

Computational Fluid Dynamics: Applications in Aeronautical and Aerospace
Engineering

International Journal of Aerospace Sciences - August 2013

More information is available at http://journal.sapub.org/aerospace
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Carson Willis

Editorial Department

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Scientific & Academic Publishing (http://www.sapub.org/)