نتایج جستجو برای: contrast sensitivit

تعداد نتایج: 392879  

Journal: :بینا 0
محمدرضا روحانی mr rohani zahedan university of medical sciences, zahedan, iranزاهدان- میدان آزادی- بلوار شهید مطهری (بلوار فرودگاه)- بیمارستان فوق تخصصی چشم پزشکی الزهرا (س) سیامک دلفزا باهر s delfaza-baher zahedan university of medical sciences, zahedan, iranزاهدان- میدان آزادی- بلوار شهید مطهری (بلوار فرودگاه)- بیمارستان فوق تخصصی چشم پزشکی الزهرا (س) حمیدرضا برخورداری یزدی hr barkhordari-yazdi zahedan university of medical sciences, zahedan, iranزاهدان- میدان آزادی- بلوار شهید مطهری (بلوار فرودگاه)- بیمارستان فوق تخصصی چشم پزشکی الزهرا (س)

purpose: to compare aspheric and spherical hydrophilic intraocular lenses (iols) in terms of contrast sensitivity and visual acuity in photopic and mesopic conditions. methods: this triple-blind randomized clinical trial was performed on 40 eyes of 40 patients at al-zahra eye center, zahedan, iran. the eyes were randomized to standard phacoemulsification procedure with spherical (adapt, b&l;) o...

Journal: :Complex Systems 1989
David E. Goldberg

Part I considered the application of Walsh functions to the analysis of genetic algorithms operating on different coding-function combinations. In this paper, those meth ods are extended to permit rigorous analysis of deception by considering the expect ed disruption to schema processing caused by different genetic operators. Algebraic extensions of these metho ds are considered, and a sensitiv...

1997
Hubert Schwetlick HUBERT SCHWETLICK

Technische Universit at Dresden Herausgeber: Der Rektor Iterative Computation of the Smallest Singular Value and the Corresponding Singular Vectors of a Matrix Hubert Schwetlick and Uwe Schnabel IOKOMO-06-97 December 1997 Preprint-Reihe IOKOMO der DFG-Forschergruppe Identi kation und Optimierung komplexer Modelle auf der Basis analytischer Sensitivitatsberechnungen an der Technischen Universi...

1997
Hubert Schwetlick HUBERT SCHWETLICK

Technische Universit at Dresden Herausgeber: Der Rektor A Generalized Inverse Iteration for Computing Simple Eigenvalues of Nonsymmetric Matrices Hubert Schwetlick and Ralf L osche IOKOMO-07-97 December 1997 Preprint-Reihe IOKOMO der DFG-Forschergruppe Identi kation und Optimierung komplexer Modelle auf der Basis analytischer Sensitivitatsberechnungen an der Technischen Universitat Dresden ...

1999
Christian Gaser Hans-Peter Volz Stefan J. Kiebel Heinrich Sauer

Zusammenfassung. Wir stellen eine neue Methode vor, mit welcher strukturelle Ver anderungen im gesamten Gehirn detektiert werden k onnen. Dazu werden Deformationsfelder mittels nichtlinearer Normalisierungsalgorithmen f ur jedes zu untersuchende Bild ermittelt. F ur die Analyse dieser Deformationsfelder stellen wir ein multivariates allgemeines lineares Modell vor, welches eine Vielzahl von...

2012
Xiaoyu Zheng Xin Zhang

ABSTRACT This paper presented a high sensitivit√ opto-mechanical transducer for real time cell culture and contractile force mapping on a chip. The contractile forces developed from cells to their extracellular matrix is crucial to understanding how cells regulate their ph√siological function to adapt to their living environment and cellular processes. The structure consists of micro fabricated...

2005
Wei Wang Irving H. Zucker

(pacing-induced) dogs. The sensitivity of these units was compared between the two groups of dogs. After development of clinical heart failure, the animals were anesthetized, and the left carotid sinus was vascularly isolated and perfused with oxygenated Krebs-Henseleit solution. Single-unit baroreceptor discharge was recorded from the carotid sinus nerve in response to stepwise increases in ca...

2005
Sean M. Muldowney

To compare arteriolar versus venular smooth muscle sensitivity to myogenic and metabolic inhibition during reduced blood pressure and flow, we measured the diameter of first-order venules (diameter, 230 ,um) and arterioles (diameter, 156 gm) of the denervated, bloodperfused rat cremaster skeletal muscle that was suspended in a tissue bath. Sensitivity was determined for bath-added norepinephrin...

2016
S. Umesha H. M. Manukumar Sri Raghava

Food contaminated with fungal pathogens can cause extremely harmful effects to human even when present in low concentrations. Researchers now pay more attention towards rapid DNA extraction for the quick screening, which is highly demanded in diverse research field. Molecular description of many fungal species is identified by different molecular characteristics. Hence, the efficient isolation ...

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