Synthesis and characterization of some 1, 5-benzodiazepine derivatives from Chalcones and their use as scavengers for some heavy metals in Environmental Systems.

Chalcones (A1-A4) compounds were prepared by reacting an aldehyde (Cinnamaldehyde or terphthaldehyde) with a ketone (4-aminoacetophenone or acetylacetone) in the presence of 30% NaOH as a catalyst and ethanol as a solvent. Derivatives of 1,5-benzodiazepine (A5-A12) were prepared by reacting these prepared chalcones with orthophenylene diamine or 4-methylorthophenylene diamine in a basic medium of sodium hydroxide 10% using the microwave method. Some prepared compounds were used as scavengers of some heavy metals (iron and lead) from heavy water in ecosystems, as the results indicated the ability of these compounds to reduce or withdraw these elements from heavy water. The stability of these compounds was also tested against laser rays, as they showed resistance and stability towards laser rays.

Laser-Guided CT Intervention using Flexible Laser Bow

Laser bow systems are used for intervention guidance by steering laser rays. Such systems have shown applications in biopsy, nasal surgeries, drainage, pain therapy. In this paper, we introduce an image-based laser guided CT intervention. Instead of relying on traditional laser bow rigidly mounted to the CT scanner, our approach performs registration making use of a patient tracker in image as well as CT data to find the orientation of laser bow with respect to the CT data. The image is acquired by a camera rigidly connected to the laser bow. The proposed approach allows movability to the laser bow system without compromising on accuracy. Using camera allows real-time view of the intervention and can be used for futuristic applications.

A Luminous Efficiency-Enhanced Laser Lighting Device with a Micro-Angle Tunable Filter to Recycle Unconverted Blue Laser Rays

In this work, a phosphor converter with small thickness and low concentration, based on a micro-angle tunable tilted filter (ATFPC), was proposed for hybrid-type laser lighting devices to solve the problem of silicone phosphor converters’ carbonizing under high-energy density. Taking advantage of the filter and the scattering characteristics of microphosphors, two luminous areas are generated on the converter. Compared with conventional phosphor converters (CPCs), the lighting effects of ATFPCs are adjustable using tilt angles. When the tilt angle of the micro filter is 20°, the luminous flux of the ATPFCs is increased by 11.5% at the same concentration; the maximum temperature (MT) of ATFPCs is reduced by 22.8% under the same luminous flux and the same correlated color temperature (CCT) 6500 K. This new type of lighting device provides an alternative way to improve the luminous flux and heat dissipation of laser lighting.

Investigation of laser-powder interaction in laser powder bed fusion process in additive manufacturing

Laser powder bed fusion (LPBF) is one of the most promising additive manufacturing (AM) technologies to fabricate metal components using laser beams. To understand the underlying thermal and physical phenomena in LPBF process, discrete element method (DEM) is applied to generate the randomly packed powder, then computational fluid dynamics (CFD) coupled with volume of fluid (VOF) is adopted to simulate the laser-powder interaction. The penetration and multiple reflection of laser rays is traced. The physics of melting and solidification is captured. The temperature profile indicates the laser travel path and the adsorption and transmission of laser rays with the powder. The wetting behaviour of the melt pool driven by the capillary forces leads to the formation of pores at the connection zone. It has been demonstrated that the developed model can capture the laser-powder interaction for further understanding of LPBF process.

The results of efferent therapy by woman with HIV infection, with amniotic fluid outflow at 23 weeks with growth retardation syndrome of 2 fetus

In the article presents data on the management of a 48-year-old patient with HIV infection, urogenital infection with pregnancy, which occurred as a result of IVF, with premature effusion of amniotic fluid at 23 weeks of pregnancy with the syndrome of growth retardation of 2 fetus in monochoric diamniotic twins. After the discharge of the amniotic fluid, the patient was treated for six days in an infectious hospital, then transferred to the perinatal center, where blood tests noted moderatemanifestations of endotoxicosis, increased levels of aminotransferases and an inflammatory reaction of the body. The course of treatment included detoxification methods (plasmapheresis, hemosorption, photomodification of blood with ultraviolet, laser rays), which contributed to the normalization of blood tests, prolongation of pregnancy for another three weeks in the absence of septic complications after operative childbirth in the mother and in newborn girls. At birth, 1 childs weight, body length and Apgar score were 750 g., 29 sm. and3/5points, respectively, in 2 children 590 g., 30 sm. and1/3points, respectively. The children required treatment from resuscitators, at the second stage of nursing, from rehabilitation specialists.

Methods of efferent therapy in prolongation of pregnancy in the isthmic-cervical insufficiency (two clinical observations)

The report presents two clinical observations of pregnancy outcome in patients with isthmic-cervical insufficiency of functional (first observation) and functional-organic (second observation) origin. In both cases, previously treated cervical erosion by laser (in the second observation – carried out excision of the cervix). In secundiparous women in the present pregnancy were noted recurrent urogenital (first observation) and genital (second observation) infection with a threatened miscarriage and the need for re-hospitalizations. Complex therapy with the introduction of obstetric discharge pessarium was not effective enough, there were manifestations of the inflammatory response of the body, isthmic-cervical insufficiency progressed, up to prolapse of the fetal bladder into the cervical canal (first observation). When entering the perinatal center, the treatment of pregnant women included methods of low-volume membrane plasmapheresis and photomodification of blood with ultraviolet and laser rays (alternated). In both cases, it was possible to stop the manifestations of inflammatory response, to improve the condition of the cervical canal, to prolong pregnancy to the term of normal childbirth. In the first observation, the birth occurred naturally, in the second case cesarean section was performed due to organic changes in the cervix. Childbirth, the postpartum period in women proceeded normally. Children were born healthy, full-term, develop normally, receive breastfeeding.

Extract the glue material from the fig plant and study its physico-chemical qualities : استخلاص المادة الصمغية من نبات التين ودراسة صفاتها الفيزيوكيميائية

The study aimed to identify those qualities on the chemical contents and functional properties and effects of laser rays 532nm milk figs, Where the tests were conducted for studying the physic - chemical characteristics of the milk in Fig in the Labs of the Environment Research Center / University of Technology. We found that chemical contents of the milk were 2.166 % protein and 51.96 % moisture and 4.09 ash and 0.28 fat as T.S.S 40.33% recorded while the pH was 4.98 while the functional properties of the score of the melting 75.93 % and viscosity 44.98 Centipois and water absorption 2.32 ml of water / g sample while linking fat 0.67 ml oil / g by increasing the sample The gels have increased up to focus where the highest percentage at a concentration of 3 %. As for the results of fig milk after exposure to radiation may be given to the viscosity less lost viscosity recorded after exposure the laser 23.67Centipoins. And the proportion of melting has increased, becoming an 88.52 %.

RAY-BASED DETECTION OF OPENINGS IN URBAN AREAS USING MOBILE LIDAR DATA

The detection of openings like windows or doors is of great interest in the field of urban modeling. Mobile LIDAR data provides valuable 3D information for that purpose. There are generally two main problems: The estimation of wall’s surface, and the distinction between opening areas and occluded areas. Indeed, openings may be visible or occluded with regard to the sensor. The method presented in this paper focuses on the detection of visible openings using intersections between laser rays and walls. In particular, it shows that detection of visible openings can be reduced to a single distance threshold once the surface of the wall is computed. Thus all the complexity is actually in the estimation of the wall’s surface. The opening contours are then obtained by clustering the visible opening points and fitting them with rectangles. The main advantage of ray-based detection is its robustness to occlusions. This method requires the LIDAR sensor positions and angles for every laser point. Results are evaluated quantitatively on two datasets with ground truth. Qualitative results on larger datasets are also given. The results show good precision. The recall (or completeness) depends on the number of occluded openings.

RAY-BASED DETECTION OF OPENINGS IN URBAN AREAS USING MOBILE LIDAR DATA

The detection of openings like windows or doors is of great interest in the field of urban modeling. Mobile LIDAR data provides valuable 3D information for that purpose. There are generally two main problems: The estimation of wall’s surface, and the distinction between opening areas and occluded areas. Indeed, openings may be visible or occluded with regard to the sensor. The method presented in this paper focuses on the detection of visible openings using intersections between laser rays and walls. In particular, it shows that detection of visible openings can be reduced to a single distance threshold once the surface of the wall is computed. Thus all the complexity is actually in the estimation of the wall’s surface. The opening contours are then obtained by clustering the visible opening points and fitting them with rectangles. The main advantage of ray-based detection is its robustness to occlusions. This method requires the LIDAR sensor positions and angles for every laser point. Results are evaluated quantitatively on two datasets with ground truth. Qualitative results on larger datasets are also given. The results show good precision. The recall (or completeness) depends on the number of occluded openings.

Effect of Sunflower (Helianthus annuus L.) Seeds Treatment by Diode Laser Radiation in Seedlings and Calli Growth

The effect of the exposure of sunflower (Helianthus annuus L.) seeds to red light laser radiationwith 650 nm 50 mw/cm2by diode laser in germination and growth of seedlings and calli had beenstudied. Seeds were irradiated with red light for different periods of time 5, 10, 15 and 20minutes. The percentage of seeds germination and the average of roots length were differentaccording to exposure time used. Increasing the time of exposure led to the best results in seedgermination percentage (100%), rooting and shooting behavior and flowering accelerationcompared with control. Initiation of calli from explants (roots, stems and leaves) of sunflowerseedlings on Murashige and Skoog media containing 1.0 mg/l of Benzyl adenine and 0.5 mg/l ofNaphthalene acetic acid were succeeded very well from the irradiated seeds. The best irradiationtime was 20 minutes for growth and durability of leaf calli. The fresh weight, protein, DNA, RNAcontents and the specific activity of dihydrofolate reductase of calli of different explants wereincreased with increasing the duration of seeds exposure to red light at 30 and 60 days of growthon media. Results also illustrate increases in protein and oil contents in the irradiated seeds overcontrol seeds, specially at 20 minutes. Using red laser rays for 5 and 20 minutes, resulted in rootsand shoots production from calli of stem and leaf respectively