The Effects of C.W. He-Ne Laser Brightness on the Eye Retina of Lacerta laevis

The aim of this paper is to test the influence of the laser brightness on the retina of eye of lacerta laevis, and the value of the distortion or damage in the construction of photoreceptors (Cones), which are responsible of the viewing process or in the pigmentary epithelial layer which protect from the high light intensity. On the other hand, the continuation of the exposure to the He- Ne laser beam the number of the damaged cells, that causes the loss of entire photoreceptor layer. The results show similar effects at specular reflection. Hence, it is very important to pay attention to the hazard emerged from the laser beam in visible range, which requires to apply the special goggles, as well as to keep the laser pointers out of reach of children.

Penal protection of computer programs and information from damage ((In the Syrian legislation))

Intellectual property laws regulate and protect the rights arising from the design of computer programs and its production along with its special legislation. Thus, the attack on these programs pose a threat to those rights, which its owners did their best to produce and benefit their communities. The crime of damaging programs and information is an IT crime considered as a serious attacks mainly on information property. However it's different in the case of damaging crime, as it is not aimed at the enrichment at the expense of others, nor get the programs of others illegally, but targets only damage, destruction and vandalism to others property information without any enrichment.

The comprehensive danger in the crime of fire and the crime of damage

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.

Study of the Damage Threshold of optical surfaces of high-power energy pulse lasers with changing coefficient of optical surface roughness

ABSTRACT This paper presents the measurement of the laser Threshold damage of an optical surface at different roughness coefficients. The study procedure is achieved through the manufacturing of two types of parallel-sided borosilicate plate (Glass Bk7, and SF13). The Laser used is ND: YAG pulsed laser and the longitudinal mode TEM00 laser pulses with pulse width τ =30ns and wave length λ=1.064μm, the laser beam is focused using F=30 mm lens. The concentrated laser beam is guided by a converging lens towards the optical surface of the parallel surface plate. Finally, we obtained a graph of roughness coefficient is drawn in relation the optical Threshold Damage of the optical surface, Before and after processing the optical surface. We were able to raise the threshold by about 15% after conducting thermal treatment of the optical surface.