In the current work various types of epoxy composites were added to concrete to enhance its effectiveness as a gamma- ray shield. Four epoxy samples of (E/clay/B4C) S1, (E/Mag/B4C) S2, (EPIL) S3 and (Ep) S4 were used in a comparative study of gamma radiation attenuation properties of these shields that calculating using Mont Carlo code (MCNP-5). Adopting Win X-com software and Artificial Neural Network (ANN), µ/ρ revealed great compliance with MCNP-5. By applying (µ/ρ) output for gamma at different energies, HVL, TVL and MFP have been also estimated. ANN technique was simulated to estimate (µ/ρ) and dose rates. According to the results, µ/ρ of all epoxy samples scored higher than standard concrete. Both S2 and S3 samples having higher values of µ/ρ, show minimum dose rate values. (µ/ρ) and RPE% values were enhanced, the concrete containing E/Mag/B4C (S2) had the best results, while the concrete containing Ep (S4) provide the worst results. The ANN prediction results take 15 sec for estimating gamma doses corresponding to seventeen shield thicknesses, while the theoretical MCNP-5 results took approximately between 7 to 10 hours for five gamma doses. ANN provides excellent predictions with a high degree of correlation depending on increasing the number of attenuation parameters used in the training process. Also, it predicts gamma dose rates for a large number of shield thicknesses that cannot be calculated theoretically in a very short time. This supports, the created epoxy composite offers good attenuation properties for many shielding applications and could be proposed as an injecting mortar for cracks in biological shields and the walls of diagnostic and radiotherapy rooms. However, further investigations are planned for different filler ratios, for comparison purposes, in order to reach optimal shielding properties
The judge's estimation power in giving the judicial term in the execution case is represented in the possibility of amending the term of the contract commitment. That term on which both parties agreed to execute the contract commitment at its due date, because at the due date of fulfilling the commitment the debtor is bounded to pay, yet this fulfillment may be exhausting to the debtor, or causing him damage or harm more than that damage caused to the creditor in delaying the fulfillment.
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... Show MoreA share purchase offer is a legal process whereby a natural or legal person offers to the shareholders of a particular company the desire to buy the shares they own. Shareholders have the choice between accepting or rejecting the offer within a specified period of time. This purchase is a fixed price that is often higher than the price price; for the purpose of encouraging the shareholders of the target company to sell their shares to the bidder. Although stock purchase offers are one of the methods or methods of corporate control, they differ from other forms of control, such as mergers and purchase of shares from the stock market. The process of stock purchase offers is governed by a set of principles that must be adhered to, Informati
... Show MoreBackground: Ureteric stones commonly have an impact on the quality of life of the patient. There are many treatment choices for the condition, including medical treatment, extra-corporeal shock wave lithotripsy (ESWL), endoscopic intervention by ureteroscope (URS), or surgery (open or laparoscopic). Semi-rigid URS with laser lithotripsy is used to fragment ureteric stones, especially those in the distal ureter.
Objectives: To assess the efficacy and complications of the dusting versus the fragmentation method for lower ureteric stones using holmium laser lithotripsy by analyzing intra-operative and post-operative variables.
Patients and methods: One hundred and twenty patie
... Show MoreThis study aimed to identify the extent of the constitutionality of proving the crime of graft regarding transferring the burden of proof to the accused and its violation of the presumption of innocence. The presumption of innocence, unlike the Kuwaiti legislator, who did not shift the burden of proof in the crimes of illegitimate gain, and that the proof of the crimes of illegitimate gain according to the Palestinian and Jordanian legislators are linked to two forms: actual exploitation and judgmental or presumed exploitation, while the Kuwaiti legislator has limited proof of illegitimate gain crimes in the form of The study recommended a set of recommendations for an amendment to the text of Article 3 of Decree Law No. 37 of 2018 regar
... Show MoreIn this paper, a polymer-based composite material was prepared by hand Lay-up method consisting of epoxy resin as a base material filled with by magnesium oxide powder once and silicon dioxide powder again and with different weight ratios (3%, 6%, 9%, 12%). The three-point bending test was performed in normal conditions and after immersion in sulfuric acid. The results showed that the bending value decreased with the increase of the weighted ratio of the filled nano powder (MgO, SiO2) .The Bending of samples filled with by SiO2 was found to be less than the bending of samples filled with by particles (MgO), the bending of the SiO2 sample (0.32mm) at the weighted ratio (3%) and for the MgO (0.18mm) sample
... Show MoreThis paper deals with the position of the UAE Civil Transactions Law No. 5 of 1985 on the harmful act and how it dealt with this subject, and we know that the direct historical source of the civil transactions law is the Jordanian Civil Code. Some texts are quoted literally from this law. The Jordanian civil law is clearly influenced by the jurisprudence of Hanafi and the jurisprudential jurisprudence, while the general orientation of the UAE legislator is to adopt the most appropriate solutions in the jurisprudence with the introduction of the Maliki and Hanbali and Hanafi and Shafei, in the absence of legislation to rule the matter, the authors of the law The United Arab Emirates have changed some of the texts passed on to the Jordania
... Show MoreThe Catering contract is considered as a type of hospitality contracts in the English common law of customary origins. Which is unwritten and based upon judicial precedents of the English courts. It is a complex contract of mixed nature، Is Regarded as a contract for the sale of meals of food and drink،, and is considered as a contract for supply of services concerning the preparation of food and drink، for providing them to the customer، as well as being a bailment contract. It is worth-bearing in mind that this contract is subject to the rules of three important English legislations: The Sale of Goods Act 1979، The Supply of Goods and Services 1982، The Consumer Protection Act 1987، and The Consumer Rights Act 2015. It is also w
... Show MoreThe children are suffering from many kinds of tragedy acts such as killing and torture which arise from civil wars never be seen along the human history since decades.
We still see millions of children suffering specially in the Arab world, Iraq, Syria, Libya, and Yemen. This study deals with kinds of protections which comes by international treaties and practiced by international organizations which helps in the protection through the military conflicts, and we compare this right in the Islamic shree, and how the states are comply with this right and how can they protect the children practically.
At last we reach the conclusion and finally the recommendations.
The division partitioning technique has been used to analyze the four electron systems into six-pairs electronic wave functions for ( for the Beryllium atom in its excited state (1s2 2s 3s ) and like ions ( B+1 ,C+2 ) using Hartree-Fock wave functions . The aim of this work is to study atomic scattering form factor f(s) for and nuclear magnetic shielding constant. The results are obtained numerically by using the computer software (Mathcad).
The present study was undertaken to determine and compare the antibacterial and biochemical characteristics of honey samples from Kurdistan region in Iraq and Arabian Gulf region. Sixteen honey samples of mixed floral origins from both regions were analysed and compared. Antibacterial activity of the honey samples was investigated against five clinical pathogenic bacteria: Acinetobacter baumannii, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi and Staphylococcus aureus by agar dilution method. Both sample sets showed differential biochemical characteristics and potential functional properties such as antioxidant and antimicrobial properties. All measured parameters were within accepted ranges. Howev
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