نتایج جستجو برای: magnetic susceptibility

تعداد نتایج: 464820  

2016
Hoabin Hong Yongjae Yu Seong-Jae Doh Dongwoo Suk Jeongmin Kim

The anisotropy of magnetic susceptibility (AMS) of late Cretaceous ash-flow tuffs in Chisulryoung Volcanic Formation, southeastern Korea was studied to define the primary pyroclastic flow azimuth. AMS data revealed a dominant oblate fabric with a tight clustering of k3 (minimum axis of magnetic susceptibility) and shallow dispersal of k1 (maximum axis of magnetic susceptibility) and k2 (interme...

2017
Shewei Dou Yan Bai Ankit Shandil Degang Ding Dapeng Shi E Mark Haacke Meiyun Wang

Prostate cancer and prostatic calcifications have a high incidence in elderly men. We aimed to investigate the diagnostic capabilities of susceptibility-weighted imaging in detecting prostate cancer and prostatic calcifications. A total number of 156 men, including 34 with prostate cancer and 122 with benign prostate were enrolled in this study. Computed tomography, conventional magnetic resona...

2017
Kengo Ito Noriyuki Kadoya Yujiro Nakajima Masahide Saito Kiyokazu Sato Tatsuo Nagasaka Kazuomi Yamanaka Suguru Dobashi Ken Takeda Haruo Matsushita Keiichi Jingu

Recently, several institutions have been developing magnetic resonance imaging (MRI)-guided radiotherapy treatment systems. In this study, we examine whether it is possible to perform radiation therapy planning (RTP) using a magnetic susceptibility map obtained using MRI. The head of a healthy volunteer was scanned using dual-energy computed tomography (CT) and MRI. A T2-star-weighted 3D gradie...

Journal: :Physical review. B, Condensed matter 1988
Hargraves Dunlap Geldart Ritcey

The magnetic suspectibility of a single crystal of high-purity gadolinium has been measured in the critical region with use of ac susceptibility methods. For reduced temperatures t 10, the data are described by a simple power law of the form Z At "with an exponent y 1.22(2) and a Curie temperature T, 293.51(3) K. For reduced temperatures t +10 3, the data cannot be described by a simple power l...

2003
D. D. Jackson C. Aracne-Ruddle V. Malba S. T. Weir Y. K. Vohra

High pressure magnetic susceptibility experiments can yield valuable insights into the changes in magnetic behavior and electron correlation properties which can accompany extreme compressions of matter. However, magnetic susceptibility experiments with ultrahigh pressure diamond anvil cells are extremely challenging due to the very small size of the high-pressure sample ~'75 mm diameter! and t...

2017
G. Busch H.-J. Güntherodt H. Künzi H. Meier H. A. MEIER

We have measured the magnetic susceptibility, the Hall coefficient and the electrical resistivity of liquid transition metals Fe, Co and Ni alloyed with normal metals. Up to now the investigated alloys can be divided into two groups according to the behaviour of the magnetic susceptibility. The typical behaviour is represented by the liquid alloys of Co-Ge and Au-Ni. In the first group the magn...

2018
Yougui Song

This article presents magnetic data of a 300-m-thick Mio-Pliocene red clay and Quaternary loess-paleosol sequence near Chaona town in the Central Chinese Loess Plateau. Detailed magnetostratigraphy shows that the aeolian red clay began to accumulate at ca. 8.1 Ma. Here, we presented a high-resolution rock magnetic data at 20-40 cm intervals within 4.5-8 ka span per sample of this section, which...

2012
P. Marcon

In this paper, an overview of methods for magnetic susceptibility measurement is described. Older methods — Faraday’s scale and Guoy’s scale are based on force effects of magnetic filed to magnetized specimen. Another methods — Inductive methods, use change of coil inductance, when magnetically conductive specimen is embedded. Modern methods (SQUID magnetometer) benefits from quantum interferen...

Journal: :NeuroImage 2013
Weili Zheng Helen Nichol Saifeng Liu Yu-Chung N. Cheng E. Mark Haacke

Measuring iron content in the brain has important implications for a number of neurodegenerative diseases. Quantitative susceptibility mapping (QSM), derived from magnetic resonance images, has been used to measure total iron content in vivo and in post mortem brain. In this paper, we show how magnetic susceptibility from QSM correlates with total iron content measured by X-ray fluorescence (XR...

2003
R. E. Ernst R. Herd

Introduction: There has been recent interest in using magnetic susceptiblity to characterize and classify meteorites [1,2]. Measurements of magnetic susceptibility represent a fast, non-destructive and systematic way to categorize the rapidly expanding inventory of stony meteorites being discovered on Earth. Previous studies [1,2] have demonstrated that although magnetic susceptibility varies o...

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