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Showing 1 to 12 of 256 entries
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Acute myocardial infarction with multiple coronary thromboses in a young addict of amphetamines and benzodiazepines.

Journal of the Saudi Heart Association

Al Shehri MA, Youssef AA.
PMID: 27358538
J Saudi Heart Assoc. 2016 Jul;28(3):180-4. doi: 10.1016/j.jsha.2015.11.004. Epub 2015 Dec 02.

A 35-year-old man of average build and a smoker, with a background of a psychiatric disorder, was brought by his neighbor to the emergency department after an hour of severe chest pain. Upon arrival at the hospital he had...

The Promise and Challenge of Induced Pluripotent Stem Cells for Cardiovascular Applications.

JACC. Basic to translational science

Youssef AA, Ross EG, Bolli R, Pepine CJ, Leeper NJ, Yang PC.
PMID: 28580434
JACC Basic Transl Sci. 2016 Oct;1(6):510-523. doi: 10.1016/j.jacbts.2016.06.010.

The recent discovery of human-induced pluripotent stem cells (iPSCs) has revolutionized the field of stem cells. iPSCs have demonstrated that biological development is not an irreversible process and that mature adult somatic cells can be induced to become pluripotent....

Draft Genome Sequence of .

Genome announcements

Yang X, Huang E, Yesil M, Xiaoli L, Dudley EG, Yousef AE.
PMID: 29025947
Genome Announc. 2017 Oct 12;5(41). doi: 10.1128/genomeA.01093-17.

No abstract available.

Efficient Algorithms for Estimating the Absorption Spectrum within Linear Response TDDFT.

Journal of chemical theory and computation

Brabec J, Lin L, Shao M, Govind N, Yang C, Saad Y, Ng EG.
PMID: 26894238
J Chem Theory Comput. 2015 Nov 10;11(11):5197-208. doi: 10.1021/acs.jctc.5b00887.

We present a special symmetric Lanczos algorithm and a kernel polynomial method (KPM) for approximating the absorption spectrum of molecules within the linear response time-dependent density functional theory (TDDFT) framework in the product form. In contrast to existing algorithms,...

Fast Estimation of Approximate Matrix Ranks Using Spectral Densities.

Neural computation

Ubaru S, Saad Y, Seghouane AK.
PMID: 28333585
Neural Comput. 2017 May;29(5):1317-1351. doi: 10.1162/NECO_a_00951. Epub 2017 Mar 23.

Many machine learning and data-related applications require the knowledge of approximate ranks of large data matrices at hand. This letter presents two computationally inexpensive techniques to estimate the approximate ranks of such matrices. These techniques exploit approximate spectral densities,...

Ab initio calculations for large dielectric matrices of confined systems.

Physical review letters

Oğüt S, Burdick R, Saad Y, Chelikowsky JR.
PMID: 12688897
Phys Rev Lett. 2003 Mar 28;90(12):127401. doi: 10.1103/PhysRevLett.90.127401. Epub 2003 Mar 25.

Calculations for optical excitations in confined systems require knowledge of the inverse screening dielectric function epsilon(-1)(r,r(')), which plays a crucial role in determining exciton binding energies. We present a new efficient real-space method of inverting and storing large ab...

Parallel self-consistent-field calculations via Chebyshev-filtered subspace acceleration.

Physical review. E, Statistical, nonlinear, and soft matter physics

Zhou Y, Saad Y, Tiago ML, Chelikowsky JR.
PMID: 17280174
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Dec;74(6):066704. doi: 10.1103/PhysRevE.74.066704. Epub 2006 Dec 28.

Solving the Kohn-Sham eigenvalue problem constitutes the most computationally expensive part in self-consistent density functional theory (DFT) calculations. In a previous paper, we have proposed a nonlinear Chebyshev-filtered subspace iteration method, which avoids computing explicit eigenvectors except at the...

Algorithms for the electronic and vibrational properties of nanocrystals.

Journal of physics. Condensed matter : an Institute of Physics journal

Chelikowsky JR, Zayak AT, Chan TL, Tiago ML, Zhou Y, Saad Y.
PMID: 21715910
J Phys Condens Matter. 2009 Feb 11;21(6):064207. doi: 10.1088/0953-8984/21/6/064207. Epub 2009 Jan 20.

Solving the electronic structure problem for nanoscale systems remains a computationally challenging problem. The numerous degrees of freedom, both electronic and nuclear, make the problem impossible to solve without some effective approximations. Here we illustrate some advances in algorithm...

Growth kinetics of Lactobacillus acidophilus under ohmic heating.

Biotechnology and bioengineering

Cho HY, Yousef AE, Sastry SK.
PMID: 18623585
Biotechnol Bioeng. 1996 Feb 05;49(3):334-40. doi: 10.1002/(SICI)1097-0290(19960205)49:3<334::AID-BIT12>3.0.CO;2-E.

Lactobacillus acidophilus OSU133 was inoculated into MRS broth in a fermenter vessel and incubated at 30, 35, or 45 degrees C with agitation. Incubation temperatures were attained by conventional or ohmic heating. An electrical current at low (15 V)...

Pediatric pulmonary services in Saudi Arabia.

Annals of thoracic medicine

Yousef AA, Al-Shamrani AS, Al-Haider SA, Said YS, Al Harbi S, Al-Harbi AS.
PMID: 24250737
Ann Thorac Med. 2013 Oct;8(4):224-8. doi: 10.4103/1817-1737.118502.

OBJECTIVE: The purpose of this study was to assess the available pediatric pulmonary services, in terms of workforce, resources, and distribution across Saudi Arabia. This would help in proper utilization of resources and direct future planning.METHODS: A cross-sectional survey...

Prewhitening high-dimensional FMRI data sets without eigendecomposition.

Neural computation

Seghouane AK, Saad Y.
PMID: 24555454
Neural Comput. 2014 May;26(5):907-19. doi: 10.1162/NECO_a_00578. Epub 2014 Feb 20.

This letter proposes an algorithm for linear whitening that minimizes the mean squared error between the original and whitened data without using the truncated eigendecomposition (ED) of the covariance matrix of the original data. This algorithm uses Lanczos vectors...

Personal Well-being and Stress Symptoms in Wives of Iranian Martyrs, Prisoners of wars and Disabled Veterans.

Iranian journal of psychiatry

Yousefi AA, Sharif N.
PMID: 22952487
Iran J Psychiatry. 2010;5(1):28-34.

OBJECTIVE: This study was conducted to compare the personal well-being among the wives of Iranian veterans living in the city of Qom.METHOD: A sample of 300 was randomly selected from a database containing the addresses of veteran's families at...

Showing 1 to 12 of 256 entries