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Jan 26, 2015Open Access
The Hantzsch amide derivatives 1 are prepared by reaction of a mixture of
two moles of benzoylacetone, aqueous ammonia and aromatic aldehydes. Also, the
reaction of benzoylacetone with a mixture of urea or thiourea and aromatic
aldehydes afforded pyrimidine derivatives 2a-h. Pyridinethione derivative 3 was
reacted with α–haloketones and α–halonitriles 4a-e
to afford the S-alky- lated derivatives 5a-e which cyclized into 6b-e and 7.
Reactions of compound 7 with glacial acetic acid/a...
Jan 26, 2015Open Access
As more and more genetically modified (GM) crops are approved for commercialization and planting, safety issues of GM crops have become hot topics worldwide. For both regulatory and academic purposes, development of rapid, economic and effective on-site detection methods for GM components is indispensible. Up to now, the most effective and sensitive techniques used for GMO detection are based on polymerase chain reaction (PCR). PCR method needs expensive, heavy instruments and gel electrophoresi...
Jan 26, 2015Open Access
A field experiment was conducted for two consecutive years (2013 and
2014) during the dry periods under irrigation at Dabat District, Northwestern
Ethiopia to select the best adaptable and high yielder varieties. Five garlic
varieties (BishoftuNech, Kuriftu, Tseday 92, MM-98 and the local) were planted
on randomized complete block design with three replications. Data on days to
emer- gence, days to maturity, pseudo stem height, number of leaves per plant,
bulb diameter, number of cloves per bulb...
Jan 23, 2015Open Access
The mathematical model that aims at determining points in an image at
which the image brightness suddenly changes is called edge detection. This
study aims to propose a new
hybrid method for edge detection. This method is based on cellular learning
automata (CLA) and stochastic cellular automata (SCA). In the first part of the
proposed method, statistic features of the input image are hired to have
primary edge detection. In the next step CLA and SCA are employed to amplify
pixels situated on ed...
Jan 23, 2015Open Access
This paper aims to achieve
the prepared functional coatings containing a specific ratio of calcium and phosphorus, and guide
the rational allocation of chemical reagents. On the medicinal titanium alloy
surface the calcium biocoating and phosphorus biocoating were fabricated by
micro arc oxidation (MAO) process. The coating morphology and elemental
composition were observed by scanning electron microscopy (SEM) and
energy dispersive spectrometer (EDS). Wear resistant test on the coating
surface ...
Jan 23, 2015Open Access
Laser ultrasonic (LUS) receivers based
on photorefractive (PR) materials are contactless and adap- tive
interferometers, which are used widely for materials characterization. Here, we
present a simple LUS interferometer at 532 nm operating wavelength based on
organic PR polymer composites (PVK/ECZ/C 60) doped with the nonlinear
chromophore 4-[4-(diethylamino)-2-hydroxyben- zylideneamino] benzonitrile (Dc).
A picoseconds laser at 1064 nm wavelength is used to generate ultrasound pulses
...
Jan 23, 2015Open Access
Objective: The use of simulation
in medical education has become an important and successfully implemented
auxiliary method, recently. In this study, we aimed to present a compact
screen- based computer simulation for second year
medical students so that they may experience various aspects of peripheral
nerve electrophysiology by themselves. Methods: The model used in the calculations combines both the passive and active membrane
properties which were described in passive cable theory and in the...
Jan 22, 2015Open Access
In this study, we investigated
the electroencephalogram (EEG) dynamics in normal and epileptic subjects using
three newly defined quantifiers adapted from nonlinear dynamics and Hilbert
transform scatter plots (HTSPs): dispersion entropy (DispEntropy), dispersion
complexity (Disp Comp), and forbidden count (FC), hypothesizing that analysis
of electroencephalogram (EEG) signals using nonlinear and deterministic chaos
theory may provide clinicians with information for medical diagnosis and
assessm...
Jan 22, 2015Open Access
Background: Lack of
access to essential medicines is one of the most important public health
problems in Ethiopia. The objective of this study was to verify availability, affordability and prices of essential medicines in primary health care units and private medicine outlets of
South Wollo Zone. Methods:
A facility-based cross-sectional study was undertaken in 10 primary health care units and 10
private medicine outlets. Data were collected through patient exit interview,
record review, observa...
Jan 22, 2015Open Access
The shortage of irrigation water is one of the most important problems
which Iran is facing. Irrigation water pricing is one of the economic
approaches to manage irrigation water consumption and using it efficiently.
This study purpose is to evaluate the effect of irrigation water price induction
on productivity of agriculture section in Iran (case: Kashan). This study is an
application development in terms of objective and a post-event in terms of the
study design, and is descriptive in terms o...
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