Yong Bum Kim

Learn More
OBJECTIVES Reportedly, hippocampal neuronal degeneration by kainic acid (KA)-induced seizures in rats <14 days old was enhanced by lipopolysaccharide (LPS). This study was to test the hypothesis that cytokines such as interleukin (IL)-1β, IL-6 and tumor necrosis factor-α are associated with aggravated neuronal damage. MATERIALS AND METHODS Sixty male(More)
Although there is a controversy, several reports have shown that gastric cardia cancer has tended upwards in recent years. The aim of this study was to investigate the changing trend of stomach cancer according to the location of cancer and histologic type in Korea, where is known to be one of the most prevalent areas for gastric cancer. All the patients(More)
BACKGROUND We analyzed serologic data that were obtained from the Korea Association of Health from 1995 to 1999 to estimate the reliable prevalence of HBV in South Korea. METHODS 603,375, 639,465, 621,476, 612,705 and 650,398 serum samples were annually tested for HBsAg. Of HBsAg positive persons whose serum samples were available, HBeAg positivity was(More)
BACKGROUND/AIMS Vascular calcification is known to be associated with cardiovascular mortality, and arterial stiffness measured by pulse wave velocity is associated with major cardiovascular risk factors. The aim of the present study was to elucidate the correlation between arterial stiffness and cerebral arterial calcification. METHODS Arterial(More)
BACKGROUND/AIMS An increase in the pulsatility index (PI) has been suggested to reflect distal vascular resistance. The purpose of the present study was to investigate the association between intracranial arterial calcification and intracranial PIs. METHODS Consecutive patients with acute ischemic stroke or transient ischemic attack were included. The PIs(More)
Human IgG1 Fc has been widely used as a bioconjugate, but exhibits shortcomings, such as antibody- and complement-mediated cytotoxicity as well as decreased bioactivity, when applied to agonistic proteins. Here, we constructed a nonimmunogenic, noncytolytic and flexible hybrid Fc (hyFc) consisting of IgD and IgG4, and tested its function using(More)
BACKGROUND Previous diffusion-weighted MRI (DWI) studies have indicated that 10-40% of patients have silent embolism during neurointerventional procedures. However, lesion patterns of the embolisms have not been adequately investigated. METHODS DWI was taken within 7 days before and 48 h after cerebral angioplasty and stent procedures. New lesions on the(More)
In this work, we present a flying saucer, a kind of unmanned aerial vehicle(UAV), lifted based on Coanda&#x0306; effect. Coanda&#x0306; effect is an interesting fluid dynamic phenomenon that the interaction between the flow and curved surfaces produce attraction, which results in the lifting of the object. The flying saucer adopting Coanda&#x0306; effect is(More)
Path planning in complicated environments is a time consuming and computationally expensive task. Especially in high-dimensional configuration spaces with complex obstacles, searching for a proper path while avoiding collisions is still challenging. This paper presents an improved sampling-based algorithm, called the Goal Oriented sampling method (GO(More)