A LIBS technique was used to investigate the antibacterial activity of calcium oxide nanoparticles (CaO NPs). CaO NPs were prepared using a Q-switched Nd: YAG pulsed laser with fundamental wavelength 1064 nm at different energies (400-600 mJ) and constant frequency (6 Hz). powder sample after being pressed into disc diameter 1 cm. Analyzing X-ray diffraction (XRD) showed crystalline structure N...

In this paper, we report results of n2 measurements of new chalcogenide glasses in the Ge–Sb–S–Se system using a modified Z-Scan technique. Measurements were made with picosecond pulses emitted by a 10Hz Q-switched mode-locked Nd-YAG laser at 1064nm under conditions suitable to characterize ultrafast nonlinearities. The nonlinear index increases up to 500 times the n2 of fused silica with an in...

In this Work, Laser energy effects on optical and morphological properties of TiO2 thin film has been carried out using Reactive Pulsed Laser as a Deposition technique (RPLD). Q-switched Nd-YAG laser with (λ=1.06μm, t =7nsec) and different energies have been used to ablate pure Titanium target and deposited thin films on glass substrates with constant substrate temperature of (343K). The optica...

A prospective short-term preliminary clinical study to evaluate the efficacy and immediate complications of Q-switched Nd-YAG laser iridotomy in the treatment of acute and chronic angle closure glaucoma is described. The follow-up period ranged from four to 10 months. Of 40 eyes treated 36 (90%) required a single lasing session for patency (19, one application; 17, two applications), and four e...

Newcastle disease (ND) is one of the most serious illnesses of chickens. Live vaccines are widely used to prevent chicken from the disease all over the world. To access the effective and potentiate ND vaccine, a homogenous subpopulation from LaSota strain was selected following cultivation of the virus on primary chicken embryofibroblast (CEF) cells. Pathogenicity indices and molecular characte...

MODULATOR H. Aboushady, M. Dessouky, E. de Lira Mendes and P. Loumeau Universit e Paris VI, Laboratoire LIP6 4 Place Jussieu, 75252 Paris Cedex 05, France Ecole Nationale Sup erieure des T el ecommunications 46 Rue Barrault, 75634 Paris Cedex 13, France Email: [email protected] Abstract| In this paper, the design procedure for a thirdorder continuous-time modulator with RZ feedback is de...

Thermal lensing in an end-pumped Nd : YLF rod, under lasing and nonlasing conditions, has been investigated. Under lasing conditions, a weak thermal lens, with dioptric power varying linearly with pump power, was observed. Under nonlasing conditions, where higher inversion densities were involved, hence relevant to Q-switched operation or operation as an amplifier, a much stronger thermal lens ...

We review some recent results regarding the problem of providing deterministic quality of service guarantees in slot-based virtual circuit switched networks. The concept of a service curve is used to partially characterize the service that virtual circuit connections receive. We nd that service curves provide a convenient framework for managing the allocation of performance guarantees. In parti...