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The bacterial and archaeal communities in rice field soils subjected to different fertilization regimes for 57 years were investigated in two different seasons, a non-planted, drained season (April) and a rice-growing, flooded season (August), by performing soil dehydrogenase assay, real-time PCR assay and pyrosequencing analysis. All fertilization regimes(More)
BACKGROUND In 2009, there was an influenza pandemic in South Korea. The aim of this study was to evaluate the epidemiological, clinical and laboratory characteristics of this infection in children and adults. METHODS We evaluated the epidemiologic characteristics of patients infected with the 2009 H1N1 influenza A virus (4,463 patients, age range from 2(More)
In modern society, people are involuntarily being exposed to various noises in their everyday-life environments. The increasing use of mobile phones and other portable devices as a primary means of communication outside of homes makes the current noise condition even worse. During the exchange of information on these devices, the volume is usually set 15 dB(More)
The mechanotransduction mechanisms play an important role in regulation of specific cellular response or maintenance of cellular homeostasis in a wide variety of cell types. Increase in intracellular free Ca(2+) concentration ([Ca(2+)](i)) is an important signal in the first step of mechanotransduction. Mechanosensitive (MS) cation channels are thought to(More)
This thesis investigates how KoShik, otherwise known as the talking elephant, can have a human-like voice articulation. The mechanism of articulating a human sound by an elephant can be described as a unique excitation process in which the elephant first places its nose in its mouth, blows air into the mouth, produces the basic frequency by pressing the(More)
This research analyzes the irrational acoustics of common reference sound source known as pink noise and proposes hi-pass pink noise by removing unnecessary pitch range. Compared to the original pink noise, 20Hz of hi-pass pink noise had a minimum of 20% unnecessary energy reduction and a marginal benefit of 0.7dBFS amplitude, while 40Hz of hig-pass pink(More)
Fertilization and the response of the soil microbial community to the process significantly affect crop yield and the environment. In this study, the seasonal variation in the bacterial communities in rice field soil subjected to different fertilization treatments for more than 50 years was investigated using 16S rRNA sequencing. The simultaneous(More)
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