Precise color images a high-speed color video camera system with three intensified sensors

1999 ◽  
Author(s):  
Sachio Oki ◽  
Masafumi Yamakawa ◽  
Susumu Gohda ◽  
Takeharu G. Etoh
Keyword(s):  
High Speed ◽  
Video Camera ◽  
Color Images ◽  
Camera System ◽  
Color Video ◽  
Video Camera System

Attenuation of endotoxin-induced intestinal microcirculatory damage by eicosapentanoic acid

1993 ◽  
Vol 264 (5) ◽  
pp. G828-G834 ◽  
Author(s):  
S. Miura ◽  
H. Imaeda ◽  
H. Shiozaki ◽  
I. Kurose ◽  
D. Fukumura ◽  
...  
Keyword(s):  
High Speed ◽  
Platelet Activating Factor ◽  
Video Camera ◽  
Ileal Mucosa ◽  
Camera System ◽  
Endotoxin Infusion ◽  
Eicosapentanoic Acid ◽  
High Speed Video Camera ◽  
Male Wistar Rats ◽  
Video Camera System

The major objective of this study is to investigate whether oral administration of eicosapentanoic acid (EPA) has any preventive effect on endotoxin-induced microcirculatory damage of rat small intestine. EPA in a daily dose of 300 mg/kg was orally given to male Wistar rats for 3 wk. Submucosal microvessels of the ileum were observed by intravital microscopy equipped with a high-speed video camera system after the intra-arterial infusion of endotoxin at a dose of 2 mg.kg-1.h-1. The number of sticking leukocytes was significantly increased at 30 min after the treatment of endotoxin especially along the smaller branch of intestinal venules. It reached the maximal plateau at 45 min after treatment. The pretreatment of EPA significantly attenuated the increase in sticking leukocytes induced by endotoxin. A platelet-activating factor (PAF) antagonist 2-[N-acetyl-N-(2-methoxy-3-octadecylcarbamoyloxy propoxycarbonyl) aminomethyl]-1-ethylpyridinium chloride (CV-6209) significantly prevented the increased leukocyte sticking to the same extent as EPA treatment. Thirty minutes after endotoxin infusion, red blood cell (RBC) velocity was significantly decreased in both arterioles and venules. RBC velocity appeared to be continuously decreased thereafter and reached its minimum value at approximately 60 min. EPA treatment was revealed to prevent the decrease in RBC velocity of microvessels induced by endotoxin. CV-6209 also significantly attenuated the decreased RBC velocity. The remarkable elevation of PAF content in the ileal mucosa as observed by endotoxin infusion was also significantly attenuated by administration of EPA.(ABSTRACT TRUNCATED AT 250 WORDS)

Vibration Characteristics of Magnetic Fluid Droplet Adsorbed to Magnetized Needlepoint in Alternating Magnetic Field

2012 ◽  
Vol 721 ◽  
pp. 108-113
Author(s):  
Sota Inomata ◽  
Seiichi Sudo ◽  
Hidemasa Takana ◽  
Hideya Nishiyama
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Fluid ◽  
High Speed ◽  
Video Camera ◽  
Alternating Magnetic Field ◽  
Camera System ◽  
High Speed Video ◽  
High Speed Video Camera ◽  
Video Camera System

The dynamic behavior of a magnetic fluid droplet adsorbed to magnetized needlepoint in alternating magnetic field was studied with a high speed video camera system. The directions of alternating magnetic field were parallel and opposite to static magnetic field of magnetized needlepoint. It was found that the surface of magnetic fluid droplet responds to the external magnetic field in elongation and contraction. The frequency of magnetic fluid droplet oscillation was exactly same of the external magnetic field. The shape and instability oscillations of the magnetic fluid droplet were revealed experimentally.

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