In Situ Atmospheric Turbulence Measurement Using the Terrestrial Magnetic Field—A Compass for a Radiosonde

2006 ◽  
Vol 23 (3) ◽  
pp. 517-523 ◽  
Author(s):  
R. Giles Harrison ◽  
Robin J. Hogan
Keyword(s):  
Magnetic Field ◽  
Atmospheric Turbulence ◽  
Time Scale ◽  
Magnetic Field Measurement ◽  
Magnetic Fluctuations ◽  
Turbulence Measurement ◽  
Radar Measurements ◽  
In Situ Detection ◽  
Terrestrial Magnetic Field

Abstract A method for in situ detection of atmospheric turbulence has been developed using an inexpensive sensor carried within a conventional meteorological radiosonde. The sensor—a Hall effect magnetometer—was used to monitor the terrestrial magnetic field. Rapid time scale (10 s or less) fluctuations in the magnetic field measurement were related to the motion of the radiosonde, which was strongly influenced by atmospheric turbulence. Comparison with cloud radar measurements showed turbulence in regions where rapid time-scale magnetic fluctuations occurred. Reliable measurements were obtained between the surface and the stratosphere.

In Situ Detection of Lithium‐Ion Battery Pack Capacity Inconsistency Using Magnetic Field Scanning Imaging

Small Methods ◽  
2022 ◽  
pp. 2101358
Author(s):  
Hang Wang ◽  
Lang Dai ◽  
Lei Mao ◽  
Yongbin Liu ◽  
Yi Jin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Battery Pack ◽  
Scanning Imaging ◽  
In Situ Detection

scholarly journals In Situ Detection of Kinetic-size Magnetic Holes in the Martian Magnetosheath

2021 ◽  
Vol 922 (2) ◽  
pp. 107
Author(s):  
S. Y. Huang ◽  
R. T. Lin ◽  
Z. G. Yuan ◽  
K. Jiang ◽  
Y. Y. Wei ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Energy Dissipation ◽  
Field Strength ◽  
Space Plasmas ◽  
Mars Atmosphere ◽  
Planetary Environments ◽  
Space Environments ◽  
In Situ Detection ◽  
First Time

Abstract Depression in magnetic field strength with a scale below one proton gyroradius is referred to as a kinetic-size magnetic hole (KSMH). KSMHs are frequently observed near Earth’s space environments and are thought to play an important role in electron energization and energy dissipation in space plasmas. Recently, KSMHs have been evidenced in the Venusian magnetosheath. However, observations of KSMHs in other planetary environments are still lacking. In this study, we present the in situ detection of KSMHs in the Martian magnetosheath using Mars Atmosphere and Volatile EvolutioN (MAVEN) for the first time. The distribution of KSMHs is asymmetry in the southern–northern hemisphere and no obvious asymmetry in the dawn–dusk hemisphere. The observed KSMHs are accompanied by increases in the electron fluxes in the perpendicular direction, indicating the cues of trapped electrons and the formation of electron vortices inside KSMHs. These features are similar to the observations in the Earth’s magnetosheath and magnetotail plasma sheet and the Venusian magnetosheath. This implies that KSMHs are a universal magnetic structure in space.

Development of High-resolution Two-dimensional Magnetic Field Measurement System by Use of Printed-circuit Technology

2018 ◽  
Vol 138 (9) ◽  
pp. 480-481
Author(s):  
Moe Akimitsu ◽  
Yasushi Ono ◽  
Qinghong Cao ◽  
Ryota Masuki ◽  
Hiroshi Tanabe
Keyword(s):  
Magnetic Field ◽  
High Resolution ◽  
Measurement System ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
Two Dimensional ◽  
Printed Circuit ◽  
Circuit Technology

A Three-Dimensional Magnetic Field Measurement for Magnetoencephalogram

2004 ◽  
Vol 124 (6) ◽  
pp. 199-202
Author(s):  
Koichiro Kobayashi ◽  
Yoshinori Uchikawa
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Three Dimensional ◽  
Magnetic Field Measurement

Tuning the Magnetic Alignment of Cellulose Nanocrystals from Perpendicular to Parallel Using Lepidocrocite Nanoparticles

2019 ◽  
Author(s):  
Valentina Guccini ◽  
Sugam Kumar ◽  
Yulia Trushkina ◽  
Gergely Nagy ◽  
Christina Schütz ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Cellulose Nanocrystals ◽  
Small Angle Neutron Scattering ◽  
Lower Amount ◽  
Magnetic Alignment ◽  
Polarized Optical Microscopy ◽  
Parallel Orientation ◽  
Weak Magnetic Fields

The magnetic alignment of cellulose nanocrystals (CNC) and lepidocrocite nanorods (LpN), pristine and in hybrid suspensions has been investigated using contrast-matched small-angle neutron scattering (SANS) under in situ magnetic fields (0 – 6.8 T) and polarized optical microscopy. The pristine CNC (diamagnetic) and pristine LpN (paramagnetic) align perpendicular and parallel to the direction of field, respectively. The alignment of both the nanoparticles in their hybrid suspensions depends on the relative amount of the two components (CNC and LpN) and strength of the applied magnetic field. In the presence of 10 wt% LpN and fields < 1.0 T, the CNC align parallel to the field. In the hybrid containing lower amount of LpN (1 wt%), the ordering of CNC is partially frustrated in all range of magnetic field. At the same time, the LpN shows both perpendicular and parallel orientation, in the presence of CNC. This study highlights that the natural perpendicular ordering of CNC can be switched to parallel by weak magnetic fields and the incorporation of paramagnetic nanoparticle as LpN, as well it gives a method to influence the orientation of LpN.<br>

Rapid quantification and in situ detection of nitrifying bacteria in biofilms by monoclonal antibody method

2000 ◽  
Vol 41 (4-5) ◽  
pp. 301-308 ◽  
Author(s):  
N. Noda ◽  
H. Ikuta ◽  
Y. Ebie ◽  
A. Hirata ◽  
S. Tsuneda ◽  
...  
Keyword(s):  
Monoclonal Antibody ◽  
Monoclonal Antibodies ◽  
Fluorescent Antibody ◽  
Nitrifying Bacteria ◽  
Fluorescent Antibody Technique ◽  
Antibody Technique ◽  
Antibody Method ◽  
In Situ Detection ◽  
Rapid Quantification

Fluorescent antibody technique by the monoclonal antibody method is very useful and helpful for the rapid quantification and in situ detection of the specific bacteria like nitrifiers in a mixed baxterial habitat such as a biofilm. In this study, twelve monoclonal antibodies against Nitrosomonas europaea (IFO14298) and sixteen against Nitrobacter winogradskyi (IFO14297) were raised from splenocytes of mice (BALB/c). It was found that these antibodies exhibited little cross reactivity against various kinds of heterotrophic bacteria. The direct cell count method using monoclonal antibodies could exactly detect and rapidly quantify N. europaea and N. winogradskyi. Moreover, the distribution of N. europaea and N. winogradskyi in a biofilm could be examined by in situ fluorescent antibody technique. It was shown that most of N. winogradskyi existed near the surface part and most of N. europaea existed at the inner part of the polyethylene glycol (PEG) gel pellet, which had entrapped activated sludge and used in a landfill leachate treatment reactor. It was suggested that this monoclonal antibody method was utilized for estimating and controlling the population of nitrifying bacteria as a quick and favorable tool.

Magnetic field measurement of RIKEN IRC sector magnets

2001 ◽  
Author(s):  
J. Ohnishi
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement
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