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Alaghaz ANMA, Alturiqi AS, Ammar RA, Zayed ME. Synthesis, spectral characterization, anticancer and antibacterial studies of cyclodiphosph(V)azane derivatives and their copper(II) complexes. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1487430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Abdel-Nasser M. A. Alaghaz
- Department of Chemistry, Faculty of Science (Boys), Alazhar University, Cairo, Egypt
- Department of Chemistry, College of Science, Jazan University, Jazan, Saudi Arabia
| | - Amani S. Alturiqi
- Department of Chemistry, College of Science, Princess Nourah bint Abdul Rahman University, Saudi Arabia
| | - Reda A. Ammar
- Department of Chemistry, College of Science, Al-Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
| | - Mohamed E. Zayed
- Department of Botany and Microbiology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
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Ammar RA, Alturiqi AS, Alaghaz ANM, Zayed ME. Synthesis, spectral characterization, quantum chemical calculations, in-vitro antimicrobial and DNA activity studies of 2-(2′-mercaptophenyl) benzothiazole complexes. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.05.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Alturiqi AS, Alaghaz ANM, Zayed ME, Ammar RA. Synthesis, characterization, biological activity, and corrosion inhibition in acid medium of unsymmetrical tetradentate N 2
O 2
Schiff base complexes. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amani S. Alturiqi
- Department of Chemistry, College of Science; Princess Nourah bint Abdul Rahman University; Riyadh Saudi Arabia
| | - Abdel-Nasser M.A. Alaghaz
- Department of Chemistry, Faculty of Science; Jazan University; Jazan Saudi Arabia
- Department of Chemistry, Faculty of Science (Boys); Al-Azhar University; Cairo Egypt
| | - Mohamed E. Zayed
- Department of Botany and Microbiology, Faculty of Science; King Saud University; Riyadh Saudi Arabia
| | - Reda A. Ammar
- Department of Chemistry, College of Science; Al-Imam Mohammad Ibn Saud Islamic University (IMSIU); Riyadh Saudi Arabia
- Department of Chemistry, Faculty of Science (Girls); Al-Azhar University; Cairo Egypt
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Ammar RA, Alaghaz ANM, Alturiqi AS. New dimeric Schiff base quinoline complexes: Synthesis, spectral characterization, electrochemistry and cytotoxicity. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4361] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Reda A. Ammar
- Department of Chemistry, College of Science; Al-Imam Mohammad Ibn Saud Islamic University (IMSIU); 11623 Riyadh Saudi Arabia
| | | | - Amani S. Alturiqi
- Department of Chemistry, College of Science; Princess Nourah bint Abdul Rahman University; Saudi Arabia
- Deanship of Scientific Research; Princess Nourah bint Abdul Rahman University; Saudi Arabia
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A. Ammar R. Synthesis, Coordination behavior, pH-titration and Antimicrobial Activity Studies of Ternary Co(II) Complexes of Girard T and Glycine Oligopeptides. INT J ELECTROCHEM SC 2018. [DOI: 10.20964/2018.04.61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Alturiqi AS, Alaghaz ANM, Ammar RA. Synthesis, Spectral Characterization, Antitumor, Antioxidant, and Antimicrobial Studies of New Potential ONS Schiff Base Complexes. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Amani S. Alturiqi
- Department of Chemistry, College of Science; Princess Nourah bint Abdul Rahman University; Saudi Arabia
- Deanship of Scientific Research; Princess Nourah bint Abdul Rahman University; Saudi Arabia
| | | | - Reda A. Ammar
- Department of Chemistry, College of Science; Al-Imam Mohammad Ibn Saud Islamic University; Riyadh Saudi Arabia
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Al-Saeedi SI, Alaghaz ANM, Ammar RA. Synthesis, spectroscopic characterization and electrochemical studies of Girard's T chromone complexes. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.01.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hamdalla MA, Ammar RA, Rajasekaran S. A molecular structure matching approach to efficient identification of endogenous mammalian biochemical structures. BMC Bioinformatics 2015; 16 Suppl 5:S11. [PMID: 25859612 PMCID: PMC4402589 DOI: 10.1186/1471-2105-16-s5-s11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Metabolomics is the study of small molecules, called metabolites, of a cell, tissue or organism. It is of particular interest as endogenous metabolites represent the phenotype resulting from gene expression. A major challenge in metabolomics research is the structural identification of unknown biochemical compounds in complex biofluids. In this paper we present an efficient cheminformatics tool, BioSMXpress that uses known endogenous mammalian biochemicals and graph matching methods to identify endogenous mammalian biochemical structures in chemical structure space. The results of a comprehensive set of empirical experiments suggest that BioSMXpress identifies endogenous mammalian biochemical structures with high accuracy. BioSMXpress is 8 times faster than our previous work BioSM without compromising the accuracy of the predictions made. BioSMXpress is freely available at http://engr.uconn.edu/~rajasek/BioSMXpress.zip
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Elsayed SAM, Rajasekaran S, Ammar RA. Integrating Clonal Selection and Deterministic Sampling for Efficient Associative Classification. Proc Congr Evol Comput 2014:3236-3243. [PMID: 24500504 DOI: 10.1109/cec.2013.6557966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Traditional Associative Classification (AC) algorithms typically search for all possible association rules to find a representative subset of those rules. Since the search space of such rules may grow exponentially as the support threshold decreases, the rules discovery process can be computationally expensive. One effective way to tackle this problem is to directly find a set of high-stakes association rules that potentially builds a highly accurate classifier. This paper introduces AC-CS, an AC algorithm that integrates the clonal selection of the immune system along with deterministic data sampling. Upon picking a representative sample of the original data, it proceeds in an evolutionary fashion to populate only rules that are likely to yield good classification accuracy. Empirical results on several real datasets show that the approach generates dramatically less rules than traditional AC algorithms. In addition, the proposed approach is significantly more efficient than traditional AC algorithms while achieving a competitive accuracy.
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Affiliation(s)
- Samir A Mohamed Elsayed
- Computer Science Department, University of Connecticut, Storrs, CT 06269, Helwan University, Cairo, Egypt
| | | | - Reda A Ammar
- Computer Science Department, University of Connecticut, Storrs, CT 06269
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Alarfaj NA, Ammar RA, El-Tohamy MF. Retraction: Disposable screen-printed sensors for determination of Duloxetine Hydrochloride. Chem Cent J 2012; 6:72. [PMID: 22828180 PMCID: PMC3408359 DOI: 10.1186/1752-153x-6-72] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 07/24/2012] [Indexed: 11/11/2022] Open
Affiliation(s)
- Nawal A Alarfaj
- Department of Chemistry, College of Science, King Saud University, P,O, Box 22452, Riyadh, 11495, Saudi Arabia.
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Alarfaj NA, Ammar RA, El-Tohamy MF. Disposable screen-printed sensors for determination of duloxetine hydrochloride. Chem Cent J 2012; 6:6. [PMID: 22264225 PMCID: PMC3275491 DOI: 10.1186/1752-153x-6-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 01/21/2012] [Indexed: 11/24/2022] Open
Abstract
A screen-printed disposable electrode system for the determination of duloxetine hydrochloride (DL) was developed using screen-printing technology. Homemade printing has been characterized and optimized on the basis of effects of the modifier and plasticizers. The fabricated bi-electrode potentiometric strip containing both working and reference electrodes was used as duloxetine hydrochloride sensor. The proposed sensors worked satisfactorily in the concentration range from 1.0 × 10-6-1.0 × 10-2 mol L-1 with detection limit reaching 5.0 × 10-7 mol L-1 and adequate shelf life of 6 months. The method is accurate, precise and economical. The proposed method has been applied successfully for the analysis of the drug in pure and in its dosage forms. In this method, there is no interference from any common pharmaceutical additives and diluents. Results of the analysis were validated statistically by recovery studies.
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Affiliation(s)
- Nawal A Alarfaj
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia
| | - Reda A Ammar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia
- Department of Chemistry, Collage of Science, Al-Azhar University, Cairo, Egypt
| | - Maha F El-Tohamy
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia
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Rajasekaran S, Al Seesi S, Ammar RA. Improved algorithms for parsing ESLTAGs: a grammatical model suitable for RNA pseudoknots. IEEE/ACM Trans Comput Biol Bioinform 2010; 7:619-627. [PMID: 20498513 DOI: 10.1109/tcbb.2010.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Formal grammars have been employed in biology to solve various important problems. In particular, grammars have been used to model and predict RNA structures. Two such grammars are Simple Linear Tree Adjoining Grammars (SLTAGs) and Extended SLTAGs (ESLTAGs). Performances of techniques that employ grammatical formalisms critically depend on the efficiency of the underlying parsing algorithms. In this paper, we present efficient algorithms for parsing SLTAGs and ESLTAGs. Our algorithm for SLTAGs parsing takes O(min{m,n⁴}) time and O(min{m,n⁴}) space, where m is the number of entries that will ever be made in the matrix M (that is normally used by TAG parsing algorithms). Our algorithm for ESLTAGs parsing takes O(min{m,n⁴}) time and O(min{m,n⁴}) space. We show that these algorithms perform better, in practice, than the algorithms of Uemura et al.
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Affiliation(s)
- Sanguthevar Rajasekaran
- Computer Science and Engineering Department, University of Connecticut, 371 Fairfield Rd., Unit 2155, Storrs, CT 06269-2155, USA.
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Alaghaz ANMA, Ammar RA, Mohamed HM. Studies on the Chelation of Cyclodiphosph(V)azane Complexes of Co(II), Ni(II), Cu(II), and Pd(II): Preparation, Characterization, Thermal, Solid State Electrical Conductivity, and Biological Activity Studies. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500802505507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Reda A. Ammar
- b Department of Chemistry, Faculty of Science , Al-Azhar University (Girls) , Nasr City, Cairo, Egypt
| | - Hany M. Mohamed
- a Department of Chemistry, Faculty of Science , Al-Azhar University , Nasr City, Cairo, Egypt
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Hamad SH, Fergany T, Ammar RA, Abd El-Raouf AA. A Double K-Clustering Approach for restructuring Distributed Object-Oriented software. 2008 IEEE Symposium on Computers and Communications 2008. [DOI: 10.1109/iscc.2008.4625608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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