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Register a new userThe Effect of the forward speed and spindle speed variables on the loss Rate and Technological Specifications of the Cotton (Var.Aleppo118) upon Mechanical Harvesting
تأثير تغير سرعة الالة وسرعة المغازل على نسبة الفقد والمواصفات التكنولوجية لصنف القطن حلب 118 عند القطاف الآلي
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University of Aleppo رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
Created by
Shamra Editor
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يعتبر القطن ( Gossypium s. p. p. ) من أهم المحاصيل الاستراتيجية في سورية حيث يعمل أكثر من مليوني شخص في زراعة وصناعة وتجارة محصول القطن .
No English abstract
References used
بربارة سهيل ( 1982) الالات الزراعية , كلية الزراعة , جامعة حلب , 656صفحة.
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This experimental study aims to improve the quality of carded web
on advanced carding machine in Syrian spinning society.
The Effect of Speed of card on the web quality Statistically
analysed, the data indicate that all main parameters studied hav
e an
influence on web quality.
Furthermore it has been shown that there is a strong correlation
between the incident of neps and the increasing in the short fiber
content during increasing speed carding
Subsequently increase speed of card hasan effect negative on
Mechanical properties that are usualy the major contributer on the
yarn quality and its commercial value.
We study in this research the effect of proportion of cotton
run process returns upon the specifications of open end rotor cotton
produced yarn for Syrian cotton.
Five mixtures of ordinary concrete of dolomite aggregates were
prepared by changing the water to cement ratio. Thirty six cubic
concrete samples were prepared for every mixture.
Specialists use many methods to achieve their aimes .These methods help to detect
and correct errors ,in addition to identifying and addressing the weaknesses ,or to add more
effective tools and aids in order to develop the performance .
The kinet
ic analysis methods adopted by the biomechanics are considered one of the
best and most effective methods which help detecting the errors associated with the
performance through evaluating the variables representing the performance specifications.
This study focuses on the determining the values of the pelvis speed , and stretched
bow speed as variables and the speed of Javelin launching and studying the relation
between them. This study applied on five Syrian Javelin throwers from the national team
who participated in Arab and Asian championships.
The study concluded that there was a significant correlation between the speed of
pelvis and the launching speed , and there was no significant correlation between the speed
of stretched bow and the launching speed neither between the speed of pelvis and the speed
of stretched bow. In additionto the low level of the javelin speed lower than world
champion's level .There is a weakness in the using of the kinetic transport and in taking
advantage from the forces resulting from approach .
One of the skills that should be possessed by block players in volleyball is reaction
speed. It effectively influences the player’s ability to block strong shots from the opponent
correctly. However, response time is influenced by how much the play
er benefits from the
prime which is provided around him to prepare for the next movement. When a player
effectively prepares for the required movement in advance, these information are processed
more rapidly, and thus, we notice an improvement in the player’s reaction time.
Thus, we have conducted this study to find out the effect of special exercises
designed for motor preparation on reaction speed for block players center (3) in volleyball .
For the current study, we have used the priming test, suggested by Rosenbaum and
Kormblum (1982) as a prior test and a follow-up test for both test group and blocked
group, in order to figure out the effect of providing primes on the player’s reaction time.
The primes provided were either identity for the required movementor neutral. We have
followed the method of calculating the number of correct attempts executed by the players,
in order to infer the change in their reaction speed.
The results revealed improvement in the number of correct attempts for test group
after applying the suggested training program in the two situations (identity-neutral).
Therefore, we find that the applied program has contributed to an increase in the number of
correct executed attempts, which suggests an increase in the speed of processing the
information, leading to enhancing the reaction speed in block players center (3). In light of
these findings, we have recommended the necessity of using the suggested training
program as part of the training plans provided for Syrian volleyball teams. This
recommendation is due to the program’s importance in improving reaction speed, on which
most offensive and defensive skills in this game depends. We have also recommended the
necessity of conducting further research and study, based on modern training methods.
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