Does the masjid of the Al'arbaein small size of great Does the
mosque of the forty-size small size as important as the
importance of the Umayyad Mosque or the Great Nouri, for
example? And why is it called?
A question may be raised in the ears of many people, and his
answer is found in this research.
The aim of this paper is to recognition of the extent, which
architecture during the Umayyad era, has achieved. The Amra
Palace has been chosen due to its artistic and aesthetic
significance. It is considered one of the most important Umayyad
pal
aces in Al-Sham, which represents the majesty of solid
structure, beautiful motifs and high taste. It contained the finest
wall paintings, stalactites, ceramics, pools, oasis, and windows in
addition to elegantly styled and beautifully colored ceilings in the
Arabic and Islamic architecture.
This paper presents the results of analyzing 17 models with
nonlinear static analysis. The models are 5, 10 and 15-story framewall
structures with Re-entrant corners. The participations of frames
to resist the shear force range between 25% and 60%
.
Frame structuressystems contribute to resist the seismic loads. And there are many
techniques used to improve the resistance to lateral loads where steel shear walls,which is
embedded within the Frame span, are considered to be one of these ways.
This research aims to study the effect of strengthening of the reinforced concrete
frames by inserting partial steel plate shear walls, the opening is parallel to beams,
embedded within the frame. This study applied numerical analysis using Finite Element
Method (FEM) using nonlinear pushover analysis based on geometrical and Material Non-
Linear Analysis (GMNLA). Using these methods allow us to study the behavior of the
Partial steel plate that seal the whole span of the reinforced concrete frame with opening
parallel to beams against lateral loads.
This study conclude that using a partial steel plate shear wall, with opening parallel
to beams with reinforced- concrete frames can enhance the resistanceand the seismic
energy dissipation significantly.
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.
When the temperature of the external surface of a wall increases, it is important to predict what the thickness of the wall will be so that the internal surface of the wall does not exceed a limit value. We will study, by an analytical method, the ca
se in which the external surface temperature is linearly varying with time in order to determine the time for which the temperature does not exceed a predetermined limit value at a given depth from the surface. Two cases will be considered: the first one is for a wall made of a homogeneous material (e.g. concrete) and the second one is for a wall made up of concrete and phase-changing material whose melting temperature will be selected according to the desired temperature. The results obtained show that a significant delay to reach this temperature can be obtained between the two cases.
Cracks are considered important defects in concrete elements, it was noticed after constructing the reinforced concrete walls related to the Foundation, that after a short time after the hardening of concrete and without any overloading on the wall,
there have been vertical cracks of regular distances along each wall we noticed this phenomenon it had happened in many construction projects. We have described the situation, we have also explained, analyzed it by examining its reasons. By a thorough study of three projects carried out in lattakia including scale decanter, building of a tourist hotel and a trade centre, which crack width ranging from 1.25 mm to 3 mm, the height differed in each case studied. Ultimately we have found the practical solutions to avoid this phenomenon including adoption of longitudinal joints for reinforced concrete walls, spacing is about thirty times the wall thickness in order to avoid cracks caused by shrinkage and thermal stress where the depth of joint about 20 mm and the width ranging between 15 mm to 20 mm implemented on both sides of the wall internal and external. After hardening of concrete and lifting the wooden template fill the joints with filler flexible materials.
The aim of this paper is to present a recent experimental investigation of the wall pressure distribution observed during the emptying of a modeling silo, with and without inserts for four different heights hi of the insert base above the hopper outl
et. The experiments were carried out with corn, at the concrete lab. in faculty of civil engineering in Damascus university in Syria. The results show that the upper-cone with downer- truncated cone insert had a strong influence on the pressures in the silo.
Groundwater Samples were collected from seven locations distributed in
Lattakiabasin during the winter and summer seasons of 2013.All samples were treated
chemically and calculated statistically to evaluate the quality of the studied water and its
chemical properties. The aim was to assess the suitability of the water to be potable and to
determine the predominant hydrogeology status.
It was noticed that the concentrations of the detected major elements were within
allowed limits cited for drinking and irrigation waters. Also, it was found that there were
no sharp changes either in salinity or in geochemical type of the water toward groundwater
movement. Furthermore, the groundwater in the studied locations was largely influenced
by lithological composition of aquatic holder. In general, these waters were found to be
uncontaminated with marine waters with exception of the location called " wall of Al
Mena Al Baida" that is located near the sea. This has been proven by calculation of some
of geochemical proportions. Also, this study proved that the aquatic flows in the different
water holders of Latakia basin have a hydrolytic relationship among them. Consequently,
these flows comprise a uniform aquatic flow with homogenous properties in most of its
parts. The direction movement of this uniform flow was identical to the general decline of
the zone mostly.
The start of glass used in architecture is for decorative purposes
on the walls and ceilings, then, its use developments as a
transparent windows (as in Gothic architecture), up to the
greenhouses. Then, the industrial revolution came to help in t
he
emergence of large public buildings such as buildings of railways
and airports through the use of wide span and large expanses of
glass in the façades to enable the entry of light to dark interior
spaces. Later the international style emerged, which was most of its
façades of glass, and spread to all countries, and the architecture
transformed under it to timelessness and nowhere architecture.
The technique of glass façades developed and grownup till the
Glass Curtain Walls in recent decades, but refuse fully glazed
façades by architects and environmental scientists are no longer
acceptable anymore, because of a deep understanding of their
various functional properties, and of the evolution of new
technologies that have demonstrated the positive role of Glass
Curtain Wall (aesthetically, architecturally, environmentally,
socially, and structurally).
This article provided a brief overview on the history of the use
of the glass in architecture, concept of Glass Curtain Walls, and it’s
most important systems and the most important types of glass,
which used in it, to give you an idea of the available options of
systems and types. Then analyzed the functional properties of the
Glass Curtain Wall (glass façades), through a study of international
and local examples (Damascus).
