نتایج جستجو برای: mcnp 4c

تعداد نتایج: 4108  

Journal: :Medicine and science in sports and exercise 2003
R Randall Clark Jude C Sullivan Cynthia Bartok Dale A Schoeller

UNLABELLED In 1998, the National Collegiate Athletic Association (NCAA) adopted a rule requiring that skinfolds (SF) or hydrostatic weighing (HW) be used to estimate minimum weight (MW) in college wrestlers. PURPOSE To cross-validate the NCAA methods for estimation of MW using a multicomponent criterion (4C). METHODS Criterion MW was calculated from body density (BD), bone mineral content (...

2014
Ihsan Metin Leblebici Suleyman Bozkurt Turgut Tunc Eren Ibrahim Ali Ozemir Julide Sagiroglu Orhan Alimoglu

OBJECTIVE Our aim is to compare mammographic, demographic and clinicopathological characteristics of patients whose mammographies were classified as subgroups of BI-RADS 4 category (Breast Imaging - Reporting and Data System). METHODS In total, 103 patients with mammography (Senographe 600t Senix HF; General Electric, Moulineaux, France) results classified as BI-RADS 4 were included in the st...

2001
G. N. Kim Y. S. Lee H. S. Kang M. H. Cho I. S. Ko W. Namkung

Pohang Neutron Facility (PNF) is a pulsed neutron facility based on the 100-MeV electron linear accelerator. It was constructed for nuclear data production in Korea, and it consists of an electron linear accelerator, a watercooled Ta target with a water moderator and a time-offlight path with an 11 m length. The 100-MeV electron linac uses a thermionic RF-gun, an alpha magnet, four quadrupole m...

کمالی اصل, علیرضا , قدیری, حسین, مجرد کاهانی, محمد مهدی, هاشمی, سمانه,

Background and purpose: Dual-energy mammography technique is used for improving the accuracy of breast cancer diagnosis especially in dense breast cases and also detection of micro-calcifications which are early signs of breast cancer. The purpose of this study was to investigate the automatic separation feasibility of micro-calcification images in breast tissue images and evaluating its accura...

Mehdi Momen Nezhad Mohammad Taghi Bahreyni Toossi, Seyed Mohammad Hashemi

Introduction: In recent decades, several Monte Carlo codes have been introduced for research and medical applications. These methods provide both accurate and detailed calculation of particle transport from linear accelerators. The main drawback of Monte Carlo techniques is the extremely long computing time that is required in order to obtain a dose distribution with good statistical accuracy. ...

Maryam Hashemipoor Mohadeseh Arabsolghar, Nazila Lashkarizadeh Taghi Momeni

BACKGROUND AND AIM: Being able to measure dental anxiety and fear is a necessary prerequisite for studying and understanding the nature and consequences of this common fear. Index of Dental Anxiety and Fear (IDAF-4C+) is the latest scale presented for the assessment of dental anxiety, but it has never been applied in Iran. The aim of this study was t...

2000
Gregg C. Giesler

MCNP is the Monte Carlo N-Particle radiation transport code whose history dates back more than half a century to the early days of computing. From a simple beginning, its uses have grown to include fields such as criticality safety, radiation shielding, oil well logging, and medical imaging and diagnostics and an international user community of over 3000 users. This large user community could o...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1983
G G Blasdel J S Lund

We used horseradish peroxidase (HRP) to orthogradely label afferent axons in macaque striate cortex. Of the 38 axons that we recovered, nine were recorded intracellularly before being filled with HRP. Light microscope and computer reconstructions of filled processes reveal highly stereotyped patterns of arborization and suggest that there are at least five discrete populations of lateral genicu...

2002
N J Roberts

The manganese bath method for measuring the neutron emission rate of radionuclide sources requires corrections to be made for emitted neutrons which are not captured by manganese nuclei. The Monte Carlo particle transport code MCNP has been used to calculate the fractions of neutrons that escape from the boundaries of the tank, that are captured by the steel cavity in which the source is housed...

1999
N. A. Hanan A. P. Olson R. B. Pond J. E. Matos

The REBUS-3 burnup code, used in the ANL RERTR Program, is a very general code that uses diffusion theory (DIF3D) to obtain the fluxes required for reactor burnup analyses. Diffusion theory works well for most reactors. However, to include the effects of exact geometry and strong absorbers that are difficult to model using diffusion theory, a Monte Carlo method is required. MCNP, “a general-pur...

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