Investigation of dispersion and nonlinear characteristics of liquid core optical fiber filled with olive oil

This paper introduces a prospective material for photonic laser applications. Different high purity samples of olive oil were subjected to a spectrophotometer to determine the absorption spectra. The transmission behavior of olive oil is about (44.28) % at a wavelength of 532 nm, while it is (62.94) % at 1064 nm. Then, the nonlinear optical properties represented by the nonlinear refractive index and nonlinear absorption coefficient are determined using a highly sensitive method known as the Z-scan technique. Z-Scan experiment was performed using 1064 nm CW Nd:YAG and 532 nm SHG Nd:YVO4 lasers. n2 = 3.99×10-6W/cm2 and beta  = -0.0017 m/W for 1064nm wavelength and n2 = 2.45×10-7W/cm2 and beta =-7.26×10-4 m/W for 532nm wavelength. This paper gives simulation results for a liquid-core optical fiber (LCOF) filled with olive oil. The nonlinear propagation constant and group velocity dispersion (GVD) properties are estimated. The simulation of the generation of LCOF is also obtained. The calculations show that LOCF can provide huge nonlinear parameters and a large span of slow varying GVD characteristics in the visible and infrared region, which have potential applications in optical communications and nonlinear optics. The material is olive oil which is classified as an organic compound, having good nonlinear optical properties making it a potential candidate to be for photonic applications

Effects of selective laser melting process parameters on 3D-printing of Ti6Al4V/ST316L composite material and their optimization using response surface methodology

The mechanical properties of Ti6Al4V and ST316L bone implants make them superior to natural bone, which results in fewer contact points with the bone. Different manufacturing processes, such as selective laser melting (SLM), may result in different mechanical properties between Ti-6Al-4V and ST316L implants. Sustainable development for the composite implants was optimized (SLM) in this study to minimize their compressive strength and Young's modulus. A three-dimensional printing process using SLM was optimized based on laser power, hatch distance, laser velocity, and ST316L weight percentage. Composite implants made from titanium alloys and steel alloys were evaluated using response surface methodology (RSM). ST316L composition has been found to influence the mechanical properties of composites in a significant manner, based on the results of parameter optimization. Using Ti6Al4V/ST316L as a biomaterial in knee joint prostheses is possible

SERUM ZINC LEVELS IN SUDANESE PATIENTS WITH ACUTE LYMPHOCYTIC LEUKEMIA

Background: Zinc acts as growth protector for neoplastic cells and its deficiency was contributed to carcinogenesis. However, the determinations of serum zinc in acute lymphocytic leukemia (ALL) prediction and prognosis requires more investigations. Objective: To evaluate and compare serum zinc in ALL patients and healthy controls and to correlate the serum zinc levels with hematological prognostic markers. Materials and methods: The study was conducted in Khartoum state-Sudan during the period from December 2013 to September 2014, it involved a case group of ALL patients (N=100) matched for age and gender with a control group (N=100). Serum copper and zinc levels and full blood count were investigated. Results: The ALL patients showed lower levels of Zn 0.73 ± 0.18 mg/dl compared to controls 1.01 ± 0.25 mg/dl [P = 0.003]. The serum Zn levels were inversely correlated with total white cell (-0.804, P < 0.0001) and blast counts (-0.935, P < 0.0001). Conclusion: These findings ALL associated with lower serum zinc levels and higher serum copper levels. The determination of serum zinc and copper could be used as ALL prognostic markers. KEYWORDS: Acute lymphoblastic leukemia; Zinc; Carcinogenesis

SERUM ZINC LEVELS IN SUDANESE PATIENTS WITH ACUTE LYMPHOCYTIC LEUKEMIA

Background: Zinc acts as growth protector for neoplastic cells and its deficiency was contributed to carcinogenesis. However, the determinations of serum zinc in acute lymphocytic leukemia (ALL) prediction and prognosis requires more investigations. Objective: To evaluate and compare serum zinc in ALL patients and healthy controls and to correlate the serum zinc levels with hematological prognostic markers. Materials and methods: The study was conducted in Khartoum state-Sudan during the period from December 2013 to September 2014, it involved a case group of ALL patients (N=100) matched for age and gender with a control group (N=100). Serum copper and zinc levels and full blood count were investigated. Results: The ALL patients showed lower levels of Zn 0.73 ± 0.18 mg/dl compared to controls 1.01 ± 0.25 mg/dl [P = 0.003]. The serum Zn levels were inversely correlated with total white cell (-0.804, P < 0.0001) and blast counts (-0.935, P < 0.0001). Conclusion: These findings ALL associated with lower serum zinc levels and higher serum copper levels. The determination of serum zinc and copper could be used as ALL prognostic markers. KEYWORDS: Acute lymphoblastic leukemia; Zinc; Carcinogenesis

MEASUREMENT THE FLUORESCENCE PARAMETERS OF THE OLIVE OIL AND COMPARING IT WITH SOME LASER DYE MATERIALS

The verse (35) in SURA (AL- Nur) in the HOLY QURAN has inspired the author to look into the possibility of using Olive Oil as active dye laser material. Olive Oil which is classified as organic compound, having a good properties candidate it to be used as active dye laser material. The emission spectrum diagrams at some of absorption peaks (414, 536, 632 and 670) nm will be measured. These diagrams have been used to determine the Fluorescence quantum yield, Oscillator strength, Einstein coefficients for the spontaneous emission, Radiative and Fluorescence lifetime and absorption and cross sections. It has been found that fluorescence occurs at 669 nm for the entire absorption spectrum. Fluorescence of Olive Oil has been experimented using 30mW, 532nm semiconductor laser, with a beam diameter of 1.3mm. Red fluorescence has been noticed over a distance of 7cm in a glass container

PHOTO DYNAMIC THERAPY (PDT) WITH BIOLOGICAL TISSUES USING ND:GLASS LASER

A Photo Dynamic Therapy (PDT) is a technique which is used with Laser to treat many of cancer tissues. This paper deals with the relatively new therapeutic technique (PDT) with pulsed Nd:glass Laser which was applied to human soft tissues (Ovary and Kidney tissues), and to the hard tissues (freshly extracted human teeth), with power density of 280 watt/mm2 and exposure time 330 usec. Different dyes (Blue, methylene, eosin, and orange) were applied to the area before irradiation to study the effect of the pigments on the laser interaction with biological tissues. The zone of treatment (Z-necrosis) with aid of MATLAB was determined. The relationship of zone of treatment with exposure time, accumulated damage and fraction of oxidative radicals was obtained

Determination of Olive Oil Kerr Constant for Electro Optical Applications

Electro optics effects are important branches of nonlinear optics. In this research olive oil has been chosen to study its electro optical properties. Olive oil as an organic compound has a centro symmetric molecular structure which means that it has quadratic electro optical properties represented by Kerr effect. These electro optical properties such as transmittance versus applied voltage and birefringence versus the square value of the applied electric field were measured. These properties are obtained for the two types of olive oil (virgin and refined) by analyzing of these properties, the Kerr constant and Kerr coefficient for two types of olive oil have been found at different wavelengths

Evaluation of The Economic Efficacy of Some Antimycotoxicosis Compounds on Production and Humoral Immunity in Broiler Chickens.

Mycotoxicosis is an important problem in poultry industry causing global economic losses constituting a great threat. The present study was designed to investigate the ameliorative effects of four different antimycotoxicosis compounds (AMCs) against production, economic performance and humoral immunity induced by intoxication of dietary aflatoxin (AF) and/or ochratoxin (OT) in broiler chicks. Experiment (I), AF (23 ppb) and OT (17 ppb) were fed alone or mixed and in association with antimycotoxin feed additives, product A or B (1 and 0.5 g/kg feed), respectively. In experiment (II), the intoxicated chicks treated with antimycotoxin drugs, product C or D in drinking water (1ml/liter/3 successive days and 0.5 ml/liter/one day), respectively. Results revealed that chicks intoxicated with AF and/or OT showed significant (P<0.05) increase in feed conversion ratio (FCR) and mortality percentages (%) while the antibody titers against Newcastle disease (ND) virus were significantly (P<0.05) reduced. It is interesting to note that the adverse effects on FCR and mortality % were significantly (P<0.05) reduced in the single AF or OT contaminated diets with dietary supplementation of product A but in the mixed AF and OT contaminated diet, FCR were significantly (P<0.05) decreased with addition of product B. Also, product B showed significant (P<0.05) increase in the antibody titers against ND in all AF and/or OT contaminated groups. Moreover, the treatment of AF and/or OT intoxicated chicks with product C or D in the drinking water was reported significant (P<0.05) decrease in the mortality% and non-significant (P>0.05) change in FCR and ND antibody titers

Design and Implementation of Aerial Vehicle Remote Sensing and Surveillance System, Dehazing Technique Using Modified Dark Channel Prior

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Diagnose Digital Skills Gap between Professional and Academic Sectors in Architecture Discipline – Jordan Case Study

There are many studies on digitization. The newly graduated engineer has a way of thinking, currency, and outlook on engineering work. Research on the ability of universities to graduate qualified architects for the professional market has become necessary to bring about changes in teaching methods and link them to digital programs. This paper looks at if there is a consensus between the opinion of professionals and academics about digital skills, trying to integrate urgent digital skills needed by the labor market in the Architecture education study plans. Mixed between quantitative and qualitative research methods, researchers analyze the study plan of 12 universities, using the Curriculum Content Mapping )CMM( method, and conduct a questionnaire for academics and professionals. Accordingly, we prove the gap between the profession and the academic world in the discipline, and there is no agreement between them about the digital programs needed. Then researchers provide a matrix expressing the relationship between the digital courses and the AE courses in a way to connect the two