Computation of refractive index and optical retardation in stretched polymer films.

Functional polymer films are key components in the display industry, and the theoretical prediction of the optical properties of stretched polymer films is important. In this study, we try to establish the theoretical calculation process without an empirical database to predict the refractive index, including wavelength dispersions and optical retardation of stretched polymer films using several commercial simulation tools. The polarizability tensor and molecular volume for periodic units of polymers are accurately simulated, resulting in the accurate prediction of the mean refractive index and its dispersion for raw polymer materials.

Clinical implications of T-wave inversion in an asymptomatic population undergoing annual medical screening (from the Korean Air Forces Electrocardiogram Screening).

This study aimed to determine prevalence, differentiate underlying causes, and identify the benign group in subjects with asymptomatic T-wave inversion (TWI). We retrospectively read 12-lead electrocardiograms from 3,929 consecutive asymptomatic men in the air force (3,929 participants, mean age 39.3 ± 8.

Diurnal pattern of intraocular pressure is affected by microgravity when measured in space with the pressure phosphene tonometer (PPT).

Purpose: This study was designed to evaluate the effect of microgravity on the diurnal variation of intraocular pressure (IOP).

Methods: IOPs were measured with the pressure phosphene tonometer in 1 subject (the first Korean astronaut) during spaceflight. IOPs were measured every 3 hours during day time (6 times per day) at 2 separate days in space with 3 repeated measurements at each time on both eyes.

A DnaJ-like homolog from Cryphonectria parasitica is not responsive to hypoviral infection but is important for fungal growth in both wild-type and hypovirulent strains.

A DnaJ-like gene, Cpdj1, a molecular chaperone and regulator of Hsp70 in Cryphonectria parasitica, was characterized. The protein product of Cpdj1 gene consists of 379 amino acids with a predicted molecular mass of 40.6 kDa and a pI of 7.

Expression of functional pentameric heat-labile enterotoxin B subunit of Escherichia coli in Saccharomyces cerevisiae.

Although the Escherichia coli heat-labile enterotoxin B subunit (LTB) has already been expressed in several different systems, including prokaryotic and eukaryotic organisms, studies regarding the synthesis of LTB into oligomeric structures of pentameric size in the budding yeast Saccharomyces cerevisiae have been limited. Therefore, this study used a functional signal peptide of the amylase 1A protein from rice to direct the yeast-expressed LTB towards the endoplasmic reticulum to oligomerize with the expected pentameric size. The expression and assembly of the recombinant LTB were confirmed in both the cell-free extract and culture media of the recombinant strain using a Western blot analysis.

Occurrence of diverse dsRNA in a Korean population of the chestnut blight fungus, Cryphonectria parasitica.

We analysed 676 isolates from 33 Korean Cryphonectria parasitica subpopulations in Korea for dsRNA incidence and diversity. dsRNA was detected in 84 isolates. Although the dsRNA banding patterns varied in several minor bands, infected isolates could be categorized into two groups.

Surface displayed expression of a neutralizing epitope of spike protein from a Korean strain of porcine epidemic diarrhea virus.

The neutralizing epitope (K-COE) of the spike protein from a Korean strain of porcine epidemic diarrhea virus (PEDV) has been shown to prevent and foster an immune response to PED, when orally adjusted. The cell surface of the budding yeast,, was engineered to anchor the K-COE on the outer layer of the cell, and consequently, the altered yeast was applied as a dietary complement for animal feed, with immunogenic functions. In this study, the K-COE gene () of the Korean strain of PEDV with the signal peptide of rice amylase 1A (), was fused with the gene encoding the carboxyterminal half (320 amino acid residues from the C terminus) of yeast α-agglutinin, a mating associated protein that is anchored covalently to the cell wall.