This research presents a study with the help of Finite Element Method and the use of
CATIA V5 program to know the behavior of a permissible link - column used in metal
structures at high temperatures (on fire). In this article we will present an an
alysis using the
finite element method using the CATIA V5 program for the effect of different engineering
parameters (plate thickness, screw diameter, reinforcement nerves) on the behavior of
joints used in metal structures on fire. We also studied the effect of the number of bolts on
the stresses and transitions in the link and their comparison with the welding cases. We
studied and analyzed the studied model and obtained the deformation and failure schemes
at high temperatures, the flow charts and the temperatures that show the behavior of this
link to the fire. We also obtained the stress and strain schemes for the link and the transport
and load schemes at different temperatures and the behavior of this link at these different
temperature.
In this paper, we discussed the equality between the crime of fire and the
crime of damage by means of explosive material as two crimes constituting
a total danger, We have introduced the legal adaptation of the notion of
systemic danger by defining the concept of danger in terms of both its
definition and its nature, And then to describe the protected interest in
crimes that constitute a total danger.
This research aimed to study the natural regeneration of Pinus brutia in Qurdaha
region, and to determine the most important factors affecting the regeneration. 42 circular
samples were taken, the area of each sample was 400m2. The following measur
ements were
taken: geographic coordinates of each sample's centre, altitude, aspect, the slope, forest
litter thickness, the proportion of gravels, stones and rocks, tree, bushes and herb cover.
Forest inventories were achieved using Braun-Blanquet method. Which, the number of
sample seedlings, the seedling height, seedling diameter, the seedling age, burning trees
and alive trees of Pinus brutia were registered. The results showed a significant negative
effect of slope and a significant positive effect of herb cover, where the percentage of data
classification by the model was reached 74.4%, while the Nagelkerke R2value was 37%.
The negative effect of the slope comes from increasing the risks of soil erosion and the loss
in their nutritional elements. In contrast, the positive effect of herbal coverage is the
contribution to reducing the risks of summer drought that can be affect the seedlings.
In this
work a computer model based on finite difference method is
developed to calculate the temperatures and thermal
stresses/strains within the roll under various cooling system
parameters for High Chromium Cast Iron Roll, and study of the
effect of each parameter on thermal Fatigue phenomena in this
roll.
In the present paper, we study the effect of both morphology and
compatibilization on the reaction to fire of blends of recycled
poly(ethylene terephthalate) (PET) with recycled polycarbonate (PC).
Syrian narrative writers have used a number of symbols in
their narrative works, one of which is fire, which has been used very
flexibly. Fire stood for punishment, catharsis, fear, and desire both in
relation to the theme of the relevant story an
d its title.
The paper leaves it open for new significations for this symbol
that might appear in new meanings and forms by other narrative
writers not dealt with here.
This paper presents an experimental study to determine the physical and
some other important properties of certain waste materials, in order to
identify the appropriate field of their recycling. The experiments have
been carried out using five proposed materials, namely: corn cob, peanut
peel, straw, pine cone, and sticks of the stem Thistle Syrian plants.
This research aims at evaluating the effect of fire on the erosion of burned forest soils
after rainfall. The research was carried out during (2010/2011) in a pine forest near the
village of Ein Al-Jaouz at an altitude of 900m, north east Tartous g
overnorate. The forest
had a fire in October 2009.
Ten metal plots (2m2 each plot) were used to evaluate soil erosion, five plots in the
burned part of the forest and another five plots in the unburned part.
The runoff coefficient, soil erosion rate, soil pH and rate of some mineral elements
(Ca++, K+ , Mg++) were estimated and compared in the two parts.
This study showed that the runoff coefficient was three times as great on the burned
part as on the unburned part, and the rate of soil erosion was 7.22 Mg/ha in the burned part
and 0.1Mg/ha in the unburned part. This shows the impact of fire in increasing soil erosion
and runoff. This study also showed the difference in cation concentrations in the runoff
water between the two parts.
The study reveals the importance of protecting forests against fire. This is to limit
soil erosion and its economic and environmental consequences.
Video image data can be analyzed and processed in many ways. This research explores the extent at which spiking neurons, which are designed along the Hodgkin-Huxley model, are suitable for this task. The simulations reported in this research
consid
er integrate-and-fire neurons constant and alternating input currents, as well as pixel-intensity driven inputs. Currently, the simulation software employs 64 independently operating spiking neurons that process image data taken every 25 ms. In order to define the response of these neurons, the experiments were done on 100 digital images which include different illuminations, contrast, and saturation situations. The results show that the integrate-and-fire-neuron is highly sensitive to the changes in the intensity of pixels if its parameters are properly set. So in many applications, such as "Saliency Maps", which highly depend on the intensity values of a set of pixels, a neural network made of this neuron will perfectly fit.
This paper presents the methods of designing a model to determine the appropriate points to build fire towers extended on an area of Syrian Arab Republic, in order to monitor and early warning the forest fire. This helps the authorities' process of
extinguishing the fire as it arises and thereby protect our forest from fire that destroys thousands of hectares every year.
The model has been designed using the tools of Spatial Analysis available in ArcGIS program. These tools have been applied to evaluate the performance of the fire towers in the studied area, and to suggest new sites for fire towers in this region in order
to increase the vision of the area. We calculate the area of visible areas covered by the suggested fire towers. We finally customize the parameters of the model to be applied for different areas using different input data, so the users of the model simply can enter the
parameters of their own area and apply the model.
