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- 저자 : Baseer (검색결과 4 건)
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Shaikh, Baseer M.,Konda, Shankaraiah G.,Yemul, Omprakash S.,Dawane, Bhaskar S. Korean Chemical Society 2012 대한화학회지 Vol.56 No.2
An efficient access, single step and environmentally benign synthesis of a new series of pyrazole containing isoxazolines derivatives were prepared by the condensation of chalcones bearing pyrazole moiety with hydroxyl amine hydrochloride in basic condition by using polyethylene glycol-400 (PEG) as a greener reaction solvent. The advantages of the present methodology are mild reaction condition and avoidance of volatile organic solvent. Furthermore, these newly synthesized compounds were screened for their antimicrobial activity against various pathogens like Escherichia coli (MTCC 2939), Salmonella typhi (MTCC 98), Staphylococcus aureus (MTCC 96), Bacillus subtilis (MTCC 441), Aspergillus niger (MTCC 281), Aspergillus flavus (MTCC 2501), Penicillium chrsogenum (MTCC 160) and Fusarium moniliformae (MTCC 156). Especially compound containing the hydroxyl group in C2-position and presence of halo (I, Br and Cl) groups as substituents at $C_3$ and $C_5$ position on the benzene nucleus showed the higher activity. Furthermore, compounds bearing methyl groups in combination with I and Br which enhanced the activity.
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Ola W. Abd El-Baseer,Jeong Gon Lee,Young Bae Jun,Amany M. Menshawy,Kul Hur,Samy M. Mostafa 원광대학교 기초자연과학연구소 2023 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.25 No.1
In this paper, the concepts of cubic Pythagorean $KU$-ideals are introduced and several properties are investigated. Also, relations between cubic Pythagorean $KU$-ideals and cubic Pythagorean ideals are given. The pre-image of cubic Pythagorean $KU$-ideals under homomorphism of $KU$-algebras are defined and how the pre-image of cubic Pythagorean $KU$-ideals under homomorphism of $KU$-algebras become cubic Pythagorean $KU$-ideal are studied. Moreover, the Cartesian product of cubic Pythagorean $KU$-ideals in Cartesian product $KU$-algebras is given. Finally, novel new correlation coefficient between two cubic Pythagorean fuzzy sets are also studied.
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Himayat Ullah,Baseer Ullah,Riaz Muhammad 국제구조공학회 2017 Structural Engineering and Mechanics, An Int'l Jou Vol.63 No.1
Shot peening is a cold surface treatment employed to induce residual stress field in a metallic component beneficial for increasing its fatigue strength. The experimental investigation of parameters involved in shot peening process is very complex as well as costly. The most attractive alternative is the explicit dynamics finite element (FE) analysis capable of determining the shot peening process parameters subject to the selection of a proper material´s constitutive model and numerical technique. In this study, Ansys / LS-Dyna software was used to simulate the impact of steel shots of various sizes on an aluminium alloy plate described with strain rate dependent elasto-plastic material model. The impacts were carried out at various incident velocities. The influence of shot velocity and size on the plastic deformation, compressive residual stress and force-time response were investigated. The results exhibited that increasing the shot velocity and size resulted in an increase in plastic deformation of the aluminium target. However, a little effect of the shot velocity and size was observed on the magnitude of target´s subsurface compressive residual stress. The obtained results were close to the published ones, and the numerical models demonstrated the capability of the method to capture the pattern of residual stress and plastic deformation observed experimentally in aluminium alloys. The study can be quite helpful in determining and selecting the optimal shot peening parameters to achieve specific level of plastic deformation and compressive residual stress in the aluminium alloy parts especially compressor blades.
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Square root fuzzy sub-implicative ideals of $KU$-algebras
허걸,Ola W. Abd El-Baseer,Jong Il Baek,Samy M. Mostafa 원광대학교 기초자연과학연구소 2023 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.26 No.2
In real life problems, square roots are used in finance (rates of return over 2 years), normal distributions (probability density functions), lengths and distances (Pythagorean Theorem), quadratic formula (height of falling objects), radius of circles, simple harmonic motion (pendulums and springs), and standard deviation. There are many reasons from which we inspire to explore further algebraic structure in a fuzzy setting. The following are the key reasons from which we have motivated: It is seen that the use of fuzzy sets is more convenient in real life problem than ordinary sets, and so it is important in the case of algebraic structures. As a result, an effort has been made to further examine square root structure in a fuzzy situation. In this paper, we consider the square root fuzzy sub-implicative (sub-commutative) ideals in $KU$-algebras, and investigate some related properties. We give conditions for a square root fuzzy of ideal to be a square root fuzzy sub-implicative (sub-commutative) ideal. We show that any square root fuzzy sub-implicative (sub-commutative) ideal is a square root fuzzy ideal, but the converse is not true. Using a level set of a fuzzy set in a $KU$-algebra, we give a characterization of a square root fuzzy sub-implicative (sub-commutative) ideal.
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