The 1,3-dipolar cycloaddition of the aryl azide and some its of derivatives with cyclohex-
2-en-1-one was studied theoretically using different methods of Density Functional
Theory (DFT): B3LYP, B3PW91, MPW1PBE, MPW1PW91 and M062X with the basic
s
et 6-31g(d). Most of the used levels of theories provide closed results qualitatively, and
the results of the level of theory M062X / 6-31g (d) show that these reactions in the gas
state are spontaneously to form two products, but all the reactions are very slow and one of
the products P1 is more spontaneous and faster than the other P2 , and when these
reactions were studied with different solvents, it is found that solvents to have no actual
effects on the rates of these reactions.
The results of the level of theory M062X / 6-31g (d) indicate that the Gibbs free energy of
the reactions for the substitutes of Aryl increases in negative values in order of 2,6-Cl, -4
NO2, 4-OCH3, 3-OCH3, 3-Cl, 2 -Cl, H-; i.e., the substitutes do not have a significant
effect on the spontaneity of reactions compared to the substitute-H. It was observed that
TS-P1 transition state energy for all substitutes was lower than TS-P2 transition state
energy.
The 1,3-dipolar cycloaddition of the aryl azide and some its of derivatives with cinnamic
acid was studied theoretically using different methods of Density Functional Theory
(DFT): B3LYP, B3PW91, MPW1PBE, MPW1PW91 and M062X with the basic set 6-
3
1g(d). Most of the used levels of theories provide closed results qualitatively, and the
results of the level of theory M062X / 6-31g (d) show that these reactions in the gas state
carried out spontaneously to form several stable energy products; the products P1 and P2
are most stable, but all the reactions are very slow and one of the products P1 is more
spontaneous than P2 , but the formation reaction of P2 is faster.
On the other hand, when these reactions were studied with different solvents, it is found
that solvents to have no actual effects on the rates of these reactions.
The Arab Literary Heritage Is An Inexhaustible Source Inspiring A Great Deal Of
Intellectual And Creative Facts Which Enrich The Ear Innovation. Thus, Dr. Abdul-
Rahman Al-Basha Is One Of The Arab Intellectual Who Took A Look At The Arab
Heritage
And Assimilated It, Adding Intellectual, Critical And Literary Visions That
Contributed To The Enrichment Of The Arab Library With The Importance Of This
Heritage And What Originality It Has, Which Makes The Arabic Literature Grow Firm
Roots. The Various Studies Weren,T Also Restricted To Clarifying The Heritage
Importance, But They Came To Remove What Got Stuck In The Mind, Clearing Them Of
Obstacles And Accusations With The Arab Thought Was Charged To Show The Ability
Of Arab Writers And Intellectuals, And Dr. Abdul-Rahman Al-Basha Is On Of Them-
Defending The Nation,S Creativity And Thinking Whether In Poetry Or In Thought In A
Way That Serves The Intellectual And Cultural Development Of The Arab Nation
Throughout History.
Investigation was carried out in Izraa research station /Daraa
Research Center/GCSAR (Damascus, Syria), during the agricultural
seasons 2012/2013 and 2013/2014. Parents and hybrids were planted
by randomized complete block design ،the
results we
re analyzed by averages generation’s method to study the
genetic variation components of some morphological and quantity
treats (days to maturity, pods per plant, high and wide of plant,
high of first pod, weight of 100 seeds, and seed yield).
In this paper the control system of the switch reluctance motor ( SRM ) has been studied and executed, and driven by computer through the printer parallel port (LPT), and a simple explanation for switch reluctance motor has been introduced also it's
work principle and some of its advantages and disadvantages with presenting some samples, where suitable electronic circuits, pulses generation circuits, isolation circuits between computer and power circuits has been executed, with suitable programming for controlling the whole system, then suitable measurements for monitoring have been done like currents, voltages, motor speed and recorded to be discussed.
The research Studies genetic relationships among Triticum L. and Aegilops L.
species by direct sequencing of PCR-amplified internal transcribed spacer (ITS) of nuclear
ribosomal DNA to investigate the polymorphism in nucleotide sequences among 8
A
egilops L. and 7 Triticum L. species. ITS sequences were aligned with CLUSTAL W 2.1
multiple sequence aligment program. The phylogenetic relationships among species were
reconstructed using Unweighted Pair Group Mean Arithmetic Average (UPGMA) and
neighbor-joining (NJ) methods.
The paper describes a method of driving system for switch reluctance motor (SRM6/8)
with 4 phases by using: PC through (RS232), driving circuit utilizing microcontroller (Atmega
8535), and operating algorithm, which is stored in the microcontroller
. The operation of the
motor is monitored by using an interface which is designed to monitor and change the motor
parameters such as speed, voltage and current. This method can be used for monitoring the
motor operating in inaccessible environment.
The driving system for switch reluctance motor (SRM6/8), which is the topic of this
research, was designed and manufactured in the laboratory by using the solid iron. The coils are
carried by the poles which are fixed inside the solid iron cylinder.
This study was carried out in cooperation between the Faculty of
Agriculture, Damascus University and the General Commission for Scientific
Agricultural Research (GCSAR) in Karahta station of field crops researches
during two growing seasons (2003
-04 & 2004-05).
Four local improved barley lines and cultivars (female parents) were
crossed with five exotic lines and cultivars (male parents) using line × tester
method. The crosses were grown along with their parents in a randomized
complete block design (RCBD) with three replications to estimate general
combining ability (GCA), specific combining ability(SCA) and both mid and
high parent heterosis for number of spikes per plant, number of grains per
spike, thousand kernel weight, and grain yield per plant.
