Byung-Woo Kim

• Sungkyunkwan University

Gold particles have been widely used in the treatment of prostate cancer due to their unique optical properties, such as their light-heat conversion in response to near-infrared radiation. Due to well-defined synthesis mechanisms and simple manufacturing methods, gold particles have been fabricated in various sizes and shapes. However, the low phot...

A novel and simple method for the fabrication of gold nanoparticle (AuNP) clusters was introduced for use as an efficient near-infrared (NIR) photothermal agent. Cationic surfactants were employed to assemble AuNPs into clusters, during which polyvinylpyrrolidone (PVP) was used to stabilize the AuNP clusters. Through this manner, AuNP clusters with...

The roles of cobalt promoter on the bimetallic platinum-cobalt supported on the CeO2-ZrO2 mixed oxide were investigated for aqueous phase reforming reaction of ethylene glycol (EG) to verify the effects of cobalt to an enhanced activity and stability of PtCo/CeO2-ZrO2, where the CeO2-ZrO2 mixed oxide was prepared by sol–gel method at a fixed Ce/(Ce...

Flow cytometry and fluorescence activated cell sorting techniques were designed to realize configurable classification and separation of target cells. A number of cell phenotypes with different functionalities have recently been revealed. Before simultaneous selective capture of cells, it is desirable to label different samples with the correspondi...

Under autotrophic conditions, starch plays an important role in establishing anoxic conditions during PSII-dependent hydrogen (H2) photoproduction in microalgae. This is because starch is the sole organic substrate during respiratory consumption of internal oxygen (O2) from PSII-dependent direct pathway. Herein, we propose a novel approach to furth...

With the advent of nanotechnology, new functional modules (e.g., nanomotors, nanoprobes) have become essential in several medical fields. Generally, mechanical modulators systems are the principal components of most cutting-edge technologies in modern biomedical applications. However, the in vivo use of motile probes has raised many concerns due to...

High temperatures (30–36 °C) inhibited astaxanthin accumulation in Haematococcus pluvialis under photoautotrophic conditions. The depression of carotenogenesis was primarily attributed to excess intracellular less reactive oxygen species (LROS; O2 − and H2O2) levels generated under high temperature conditions. Here, we show that the heat stress-dri...

The combined steam and CO2 reforming reaction of CH4 was investigated using LaSrNiOx mixed oxides supported on Al2O3-modified β-SiC to elucidate the largely enhanced CO2 conversion at an optimal concentration of Al2O3 modifier. The dispersion of Al2O3 on the SiC support simultaneously altered the dispersion of LaSrNiOx crystallites increasing their...

Growth-related traits are complex and economically important in the livestock industry. The aim of this study was to identify quantitative trait loci (QTL) and the associated positional candidate genes affecting growth in pigs. A genome-wide association study (GWAS) was performed using the porcine single-nucleotide polymorphism (SNP) 60K bead chip....

Copper sulfide, CuS, was synthesized by an aqueous sonochemical method and it was investigated the effect of pH on crystal characteristics of CuS and IR absorbance. The formed CuS has main peaks as 27.68 degrees, 29.28 degrees, 31.79 degrees, 32.85 degrees, 47.94 degrees, 52.72 degrees and 59.3 degrees with the hexagonal structure. Average diameter...

Five hundred and forty crossbred (Korean native black pig×Landrace) F2 were selected at a commercial pig farm and then divided into six different coat color groups: (A: Black, B: White, C: Red, D: White spot in black, E: Black spot in white, F: Black spot in red). Birth weight, 21st d weight, 140th d weight and carcass weight varied among the diffe...

In light of the difficulties and disagreements in determining the property-processing structure relations of lignin-based polymers, dielectric analysis was used to identify the thermal and rheological characteristics of a lignin-based polycondensate and the pristine lignin. Using dielectric analysis, the pristine lignin with M-w=6000 g/mol, was cle...

Haematococcus pluvialis synthesizes a high yield of astaxanthin using CO2 in a photoautotrophic culture without contaminant heterotrophs; however, it takes too long to induce astaxanthin production. In this study, a highly photosensitive mutant strain was attained by conventional random mutagenesis and an efficient isolation method to shorten induc...

The fluoroelastomer rubber (FR) was successfully incorporated in natural rubber (NR) matrix composites using a colloid stabilization-destabilization methodology in the spherical shape of a few-micrometer size, where the electrostatic surface charge of the FR and NR colloidal drops were controlled to give either stable or unstable colloid mixtures....

We proposed a method to obtain carbon-doped TiO2 (C-TiO2) with a higher photocatalytic activity for degradation of toluene. Solar radiation was used as a visible light source for photocatalytic oxidation. An optical fiber reactor (OFR) was used to investigate the photocatalytic oxidation of toluene in air. All C-TiO2 films used as catalysts were sy...

In this paper, it was studied on the crystallization characteristics of PLA film by adding ammonium phosphate (APP) as a nucleation agent. Crystallinity and crystallite size of PLA film were determined by Scherrer equation. Crystallization rate constant of PLA film was calculated through Avrami equation. Film samples in the study were prepared by t...

Kenaf fibers were heterogeneously benzylated in aqueous alkaline solution. The benzylated kenaf fibers were characterized by Fourier Transform Infrared (FTIR), dynamic mechanical analysis (DMA), scanning electron microscope (SEM), universal tensile machine (UTM), and the contact angle test. The results showed that the degree of benzylation depended...

Disinfection capability using both TiO2 and UV radiation was more than 27 times as that by using only the UV light. Optimal TiO2 concentration and UV light intensity were 0.1 g TiO2 l -1 and 50W m-2 with which 100% reduction time was just 2–3 min in a batch-type slurry reactor.

The photodegradation efficiency (PE) of gaseous toluene was investigated by using titanium dioxide (TiO2) film doped of ruthenium (Ru)-dye/platinum (Pt) in a 3,600 L pilot reactor. Ru-dye was applied as a sensitizer to enhance PE of toluene in both UV and visible wavelength range since its major peaks are 225 nm, 325 nm, 375 nm, and 525 nm. PE by u...

We report a simple, ultra-sensitive, and straightforward method for non-labeling detection of a cancer biomarker, using Rayleigh light scattering spectroscopy of the individual nanosensor based on antibody-antigen recognition and localized surface plasmon resonance (LSPR) λ(max) shifts. By experimentally measuring the refractive index sensitivity o...

The molar substitution of an acrylic acid (AA) pendant group on a glycidyl methacrylate–methyl methacrylate copolymer was investigated to evaluate its affects on mechanical properties and thermal stability under UV curing. Structural analysis was conducted by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy...

In the study, annealing temperature was optimized by comparing with avrami crystallization rate and constant (k) using non-oriented PLA film as a base film. Crystallization rate constant of PLA film was 1.64, 1.68, and 1.26 at 120^{\circ}C, 130^{\circ}C, and 140^{\circ}C, respectively. Annealing temperature was mainly affected on the surface proper...

The unicellular green microalgae, Haematococcus pluvialis, has been examined as a microbial source for the production of astaxanthin, which has been suggested as a food supplement for humans and is also prescribed as an ingredient in eye drops because of its powerful anti-oxidant properties. In this study, we estimated the effects of the slope of a...

Toluene is a toxic air pollutant and a common constituent emitted from industrial processes including chemical manufacturing operations, painting, and petroleum refining. We previously developed a new biofilter system the degradation of acetone and MEK. In this study, we evaluate the optimum EBRT to achieve an effective elimination capacity (EC) wi...

The KIT locus has been suggested to be a strong candidate region linked with whole-body roan in the F(2) population produced by intercrosses between Landrace and Korean Native pigs. In this manuscript, we report the finding of a novel alternative splicing event in the porcine KIT gene that results in the skipping of exon 5 in the I(Rn) allele. KIT...

It is difficult to efficiently remove gaseous styrene using a TiO(2) film-coated photoreactor under UV light. Therefore, we used a hybrid system consisting of a carbon-doped TiO(2) (C-TiO(2)) film and a media-packed biofilter in order to enhance the removal efficiency (RE) of gaseous styrene compared to that of a pure (undoped) TiO(2) photoreactor....

AbstractThe effects of reduction temperature and reaction temperature, pressure and space velocity on iron-based K/FeCuAlO x Fischer–Tropsch catalysts prepared by co-precipitation were investigated. The catalyst reduced at 150°C deactivated quickly due to an abundance of unreduced iron species. With increasing reduction temperature, the iron oxide’...

Fischer–Tropsch synthesis (FTS) for the co-production of C2–C4 olefins and clean fuels such as gasoline and middle distillate from syngas was investigated on four different iron-based catalysts in a fixed-bed and a bubbling fluidized-bed reactor. The catalysts were prepared by wet-impregnation using the Al2O3, SiO2 and iron ore (FeOx) supports with...

In this paper, we prepared the carbon-doped TiO2 (C-TiO2) film to enhance photodegradation efficiency (PE) of gaseous toluene under UV light. PE was affected by thickness of TiO2 film, specific surface area of TiO2, and carbon content doped on TiO2. The highest value of PE was 76% with 3.2-μm-thick film. By adding 0.435g HPC, the maximum specific s...

Low-fat sausages with or without 10% hydrated rice flour were made from duck, chicken and pork and their physical and sensory properties were compared. Results showed that moisture content did not differ significantly among the sausage batters. However, crude protein, crude fat and total ash content were significantly lower in the group with added...

In the study, acrylate copolymer as MMA-co-GMA-co-AA with a high hardness and flexibility was synthesized for applying to the clear protection film, where GMA was used as a mediator to enhance polymerization-efficiency between MMA and AA. With an increase of GMA content, molecular weight and hardness of acrylate copolymer increased, however, flexib...

Composites of poly(3,4-ethylenedioxythiophene) (PEDOT) and Ag particles were prepared by electrochemical polymerization of 3,4-ethylenedioxythiophene (EDOT) and the simultaneous electrochemical reduction of AgNO3 in the presence of poly(vinyl pyrrolidone) (PVP) as a stabilizer. The formation of Ag particles with PVP of various molecular weights and...

Ketone compounds that are widely used in various manufacturing processes are known as high-priority toxic volatile organic compounds (VOCs). The use of biofiltration systems for the removal of VOCs from a polluted air stream has attention because of the inherent advantages of these systems such as high removal efficiency and low installation and ma...

Gout (also called metabolic arthritis) is a disease created by a buildup of uric acid inside of the blood and other tissue such as liver and kidney. Research to develop alternative medicines for hyperuricemia and gout has focused on the screening of natural substances due to the adverse side effects of allopurinol, which remains the only prescripti...

Electricity generation using a microbial fuel cell (MFC) was investigated with acetate as the fuel and Geobacter sulfurreducens as the biocatalyst on the anode electrode. The voltage and power density behaviors at various external resistances were observed, as were the coulombic efficiency and energy recovery behaviors at various acetate concentrat...

We have succeeded to immobilize fluorescent proteins selectively using a micro-structured organosilane self-assembled monolayer as a template. An organosilane layer with amino terminal group was formed on a thermally oxidized Si wafer by liquid-phase method and then was pattern-etched by vacuum ultraviolet light (VUV). The second organosilane layer...

The microbial fuel cell (MFC) has attracted research attention as a biotechnology capable of converting hydrocarbon into electricity production by using metal reducing bacteria as a biocatalyst. Electricity generation using a microbial fuel cell (MFC) was investigated with acetate as the fuel and Geobacter sulfurreducens as the biocatalyst on the a...

We have investigated optical filtering-effects when a spectrally-sliced ASE light is injected to a gain-saturated R-SOA. The resulting distortion in the output optical spectrum from an optical pass-band shape of AWG could significantly affect the transmission quality of the WDM-PON.

Several different designs for a header type were numerically studied to achieve uniform distribution of gas phase flow in the header of a shell-and-tube heat exchanger. The different geometries included the position and shape of the inlet nozzle, number of outlet tubes, and length. In numerical calculations, the k-epsilon realizable turbulent model...

Platinum (Pt) nanoparticles were prepared by the liquid-phase reduction of tetraammineplatinum (II) chloride ([Pt(NH3)4]Cl2) using Nafion as a stabilizer under various conditions of the Nafion phase. This method is novel in its use of electrostatic interactions between the Pt complex ions and sulfonic groups in the hydrated Nafion molecules. The sy...

Prostate-specific antigen (PSA) has been identified as a significant biomarker for prostate cancer screening. Heavily-doped porous silicon, etched to form a Fabry-Perot fringe pattern, can be applied to an interferometric sensing for detecting PSA bound with PSA-antibody. In the previous works, a calyx crown derivative (Prolinker-A) was used as an...

The pore size of an anodic aluminum oxide (AAO) chip, as well as uniform pore distribution, is one of the key parameters that should be adjusted, by choosing the appropriate etching conditions, in order to enhance the sensitivity of an interferometer. In this study, the pore size of AAO chips was optimized and characterized in order to lower the de...

The biological production of a potent anticancer agent, epothilone, by Sorangium cellulosum was carried out using flask and fermentor cultures. Soluble starch was selected as the main carbon source and the concentrations of lactose and yeast extract were optimized at 4 and 0 g/L, respectively, when using the flask cultures. In the fermentor culture...

The effects of a reductant and carbon source on the decolorization of the disazo dye C.I. Reactive Black 5 and real textile wastewater were investigated in an anaerobic sludge system. The color removal without sulfide in this process was about 94% at 35 °C during 72 h. The intermittent addition of sulfide (10 mg/L) led to an increase in the microbi...

To enhance nitrogen removal in an existing microbial contact oxidation (MCO) system with a treatment capacity of 900 m3/d, an upflow multilayer bioreactor (UMBR) was chosen as a preanoxic reactor for the removal of organic matter and nitrate. The removal performance of the retrofitted plant was evaluated during the startup phase at a low temperatur...

This paper presents the development of a reliable multi-liquid lab-on-a-chip (LOC), with a hand-operated mechanism, for the application in portable immunosensing systems. To control the transport of multiple liquids without any external equipment, we utilize capillary attraction force for filling and surface tension for stopping liquid flow. As a d...

A surface plasmon resonance (SPR)-based inhibition assay method using a polyclonal anti-mouse IgM arrayed Cryptosporidium sensor chip was developed for the real-time detection of Cryptosporidium parvum oocysts. The Cryptosporidium sensor chip was fabricated by subsequent immobilization of streptavidin and polyclonal anti-mouse IgM (secondary antibo...

We describe the modulation of biointerface by an external stimulus with a smart polymer-modified electrode. Poly(N-isopropylacrylamide) (PNIPAAm) shows a rapid reversible hydrophilic/hydrophobic transition of its conformation in response to the temperature variation across its lower critical solution temperature (LCST). This phenomenon changes the...

Target biomolecules in immunosensing, either antigens or antibodies, were detected using competitive reaction with enzyme-tagged antibody. The enzyme-tagged antibody was prepared through covalent conjugation reaction between antibody and glucose oxidase (GOX), as an electrochemical signaling molecule. By adopting dinitrophenyl (DNP) group as a targ...

The purpose of this study was to estimate the genetic parameters and trend of Landrace and Yorkshire pigs, which were raised on private farms from 1999 to 2005 and tested for their reproductive performance by the Korea Animal Improvement Association. Prior to analysis, records without pedigree or having value with larger than?3?standard deviation f...

The metabolic engineering of epothilones, as secondary metabolites, was investigated using Sorangium cellulosum to achieve the selective production of epothilone B, a potent anticancer agent. Thus, the propionyl-CoA synthetase gene (prpE) from Ralstonia solanacearum was heterologously expressed in S. cellulosum to increase the production of epothil...

We have prepared a quasi-solid-state electrolyte for dye-sensitized solar cells (DSSCs) that consist of a liquid electrolyte and a synthetic nanoclay in order to solidify a liquid electrolyte and to induce a light-scattering effect to increase cell performance. These clay-based quasi-solid-state electrolytes offer unexpected benefits over liquid el...

The morphology of polypyrrole films produced on graphite fiber substrate is affected by hydrous/anhydrous oxidants. Variation in the morphology was monitored from observation of electronic microscopy images and Brunauer-Emmett-Teller measurements, and the proposed mechanism of film formation is discussed. It was found that the morphology of polypyr...

This study aims to estimate the genetic parameters for carcass traits on Hanwoo of breeding farmhouses using Animal Products Grading Service?s data of 428,812 cattle from 101 slaughterhouses nationwide from 2000 to 2005. Using carcass traits of carcass weight, eye muscle area, backfat thickness, marbling score, meat color and fat color that greatly...

BACKGROUND: Non‐uniform distribution of pore size and depth of porous Si chip for a Fabry–Perot interferometer, in a previous study, led to relatively low sensitivity with poor reproducibility when its surface was immobilized with calyx crown derivative (Prolinker A). In this study, porous anodized aluminium oxide (AAO) was used as an alternative b...

In this work, we fabricated and characterized a microfluidic dialysis device for sample enrichment and improved enrichment performance by surface modification of a regenerated cellulose (RC) membrane using an oxygen plasma. The microfluidic dialysis device was developed with PDMS (polydimethylsiloxane) for protein solution enrichment. A PDMS mold w...

Production of extracellular epothilone B, one of the potent anticancer agents, by free and immobilized Sorangium cellulosum was studied using the repeated batch culture process. The concentration of alginate used in immobilization was directly related to the mass transfer rate of nutrients, mechanical stability, and the epothilone B production yiel...

A culture of anaerobic sludge was bioaugmented withDesulfovibrio desulfuricans for the color removal of authentic textile wastewater containing a substantial amount of sulfate, in order to improve the decolorization process. The sulfide produced by sulfate respiration ofD. desulfuricans can chemically reduce azo bonds to produce a colorless metabol...

In order to prevent the toxic effect caused by high strength ammonium in a swine wastewater treatment system, a patented upflow multi-layer bioreactor (UMBR) as a pre-anoxic tank was applied to a pilot-scale plant with a treatment capacity of 5 m3/d. This plant was operated for 4 months at a high IR ratio in the range of 10–17, in order to alleviat...

A submerged biofilm sequencing batch reactor (SBSBR) process, which liquor was internally circulated through sandfilter, was designed, and performances in swine wastewater treatment was evaluated under a condition of no external carbon source addition. Denitrification of NOx-N with loading rate in vertical and slope type of sandfilter was 19% and 3...

Data of 369 commercial pigs produced from YorkshrexLancrace (YL F1) sows crossed with either Duroc (D), Berkshire (B) or BerkshirexDuroc(BD F1) as a terminal sire were used for the comparison of carcass garde and real retail cut yield. The crosses were performed between May, 2004 and May, 2006 at three interrlated farms belonging to the Gyeongam po...

A biochip based on surface plasmon resonance was fabricated to detect prostate specific antigen-alpha(1)-antichymotrypsin (PSA-ACT complex) in both HBS buffer and human serum. To reduce non-specific binding and steric hindrance effect, the chemical surface of the sensor chips was constructed by using various oligo(ethylene glycol) mixtures of diffe...

The effect of adsorption onto the TiO<sub align="right"> 2 </sub> particle surface, on the photodegradation rate of a dye acid-blue 92, was investigated. Overall adsorption rate was estimated by using a differential bed reactor with TiO<sub align="right"> 2 </sub> particles and without UV radiation, while photodegradation rate was determined in a T...

By screening specific genes related to the muscle growth of swine using cDNA microarray technology, a total of 5 novel genes (GF (growth factor) I, II, III, IV and V) were identified. Results of southern blotting to investigate the number of copies of these genes in the genome of swine indicated that GF I, GF III, and GF V existed as one copy and G...

To develop a functional cDNA chip, specific genes expressed in the tissues of swine Kagoshima Berkshire were screened. A total of 4,434 ESTs were obtained by constructing a cDNA library from total RNA isolated from the muscle and fat tissues, affirming their functions by investigating similarity of nucleotide sequences with the database at the NCBI...

The photodegradation capability of DDT has been enhanced by Fe/TiO2 film in a photoreactor with UV radiation. The optimal thickness of TiO2 for the DDT photodegradation was 2.94 microm with a 3-time coating, where the first-order rate constant was 0.077 min(-1). The optimal Fe3+(ferric ion) photodeposition amount was estimated as 3.7 x 10(-4) mg mm...

Recombinant E. coli ACV 1003 (recA::lacZ) was used to measure low concentrations of DNA damaging chemicals, which produce beta-galactosidase via an SOS regulon system. Very low beta-galactosidase activities of less than 0.01unit/ml, corresponding to the 10ng/ml (ppb) of DNA damaging chemicals (e.g. tributyl tin, bisphenol A, etc.) in the environmen...

The effect of in situ photodeposited ferric ion onto TiO2 surface on the degradation of alachlor was investigated in the presence of the UV radiation. The photodegradation rate of alachlor could be described as an apparent first order. The rate constant (K(a)) of alachlor increased from 0.021 to 0.060 h(-1) as the number of coating times increased...

The DC and RF performance of 0.15 μm. InGaAs/InAlAs/InP pseudomorphic HEMT (PHEMT) devices with double-doped In 0.52Al 0.48As/In 0. 53Ga 0.47 As structure has been characterized. The 0.15 × 100 μm 2 InGaAs/InAlAs/InP PHEMT devices show a high gate-to-drain breakdown voltage of -8 V, an extrinsic transconductance of 870 mS/mm, and a threshold voltag...

Disinfection of a waterborne pathogenic protozoa, Giardia lamblia, by the conventional chlorine method has been known to be difficult. An alternative disinfection has been carried out by using a UV-light illuminating optical fiber photoreactor. Light intensity diffused from one piece of a clad-removed optical-fiber was 1-1.5 muEm(-1) s(-1). Disinfe...

The aims of this study were to estimate genetic parameters for carcass traits on Hanwoo(Korean Native Cattle) and to compare two different statistical algorithms for estimating genetic parameters. Data obtained from 1526 steers at Hanwoo Improvement Center and Hanwoo Improvement Complex Area from 1996 to 2001 were used for the analyses. The carcass...

This study was conducted for the identification of pure Landrace, Large White and Duroc breeds which are mainly maintained in Korea using DNA markers. We used known KIT and MC1R mutations, which were related coat color in pigs, and pig mitochondrial DNA variations. The KIT mutation was used to distinguish white and colored animals. Duroc breed coul...

Photodegradation experiments of bisphenol-A (BPA) were performed with TiO(2) particles as a photocatalyst, where particles were immobilized using a titanium sol-solution synthesized by a sol-gel method. The effects of immobilized TiO(2)-film thickness, UV radiation intensity, and pH on the photodegradation of BPA were investigated. Apparent rate co...

The photodegradation experiments of a dye, reactive black 5 (C.I. 20505), were performed in batch- and continuous-flow-type reactors using TiO2-immobilized glass tubes to investigate the effects of the TiO2 film thickness, pH, feed rate, and aeration on the removal efficiency in the presence of both ferric ion and H2O2. The photocatalytic reaction...

RecombinantE. coli ACV 1003 (recA::lacZ) releasing β-galactosidase by a SOS regulon system, when exposed to DNA-damaging compounds, have been used to effectively monitor endocrine disruptors. Low enzyme activity of less than 10 units/mL, corresponding to a μg/L (ppb) range of an endocrine disruptor (tributyl tin, bisphenol A,etc.), can be rapidly d...

This study was conducted to investigate novel genetic variations of MCIR^*3 allele. In general, white spotting or white belt on a black backgroud in pigs is determined by the E^p allele at the MCIR/Extention locus. E^p shares a frameshift mutation with the E^{D2} allele for dominant black color. An oligonucleotide primer set was designed to amplify...

This study was conducted to investigate effects of farm, type of sow LandraceYorkshire, LY; Yorkshire Landrace, YL; YorkshireYorkshire, YY and multi-cross bred sow, MBS), parity, farrowing year, farrowing season and mating method on reproductive traits such as total number born per litter, number of born alive per litter, number of weaned per litte...

This study was carried out to estimate the effects of breed and environment such as sex, test station, test year, test season, parity, initial and final weight on average daily gain, age at 90kg, backfat thickness, feed efficiency, lean percent and selection index on the basis of the performance data collected from 25,790 pigs of Duroc, Yorkshire a...

The mitochondrial DNA(mtDNA) D-loop region was amplified from Duroc(Sus scrofa) by polymerase chain reaction(PCR). The oligonucleotide primer used to amplify the Sus scrofa mtDNA D-loop region was designed using tRNA-Pro and tRNA-Phe sequence in mtDNA regions highly conserved in many other animal species. There were 1,145 base pairs(bp) in the D-lo...

Malodorous gas of dimethyl sulfide (DMS) was biologically oxidized to sulfate by Thiobacillus thioparus TK-m (DSM5368) immobilized in/on ceramic beads. More than 99.99% of DMS removal efficiency was obtained in a ceramic-biofilter reactor of 3.91 when the feed concentrations were about 27.5 and 55.0 mg DMS/1 at 30degreesC. However, the removal effi...

Alachlor photodegradation was performed using TiO(2), which was synthesized by a modified sol-gel method. The thickness of a TiO(2) film immobilised by a 5-time dip-coating was 174 nm and the average diameter of TiO(2) particles was about 10-15 nm in SEM images. The crystal structure of a TiO(2) film calcinated at 300 degrees C for 1 h was observed...

Experiments were performed to investigate the effect of operating parameters on the photodegradation efficiency of paraquat in a TiO 2 -suspended photoreactor with immersed UV lamps. TiO 2 particles were prepared by a hydrothermal method. The removal rate of paraquat in the reactor was 0.54 mg/l/h with only air-sparging. The removal rate in 24 h wi...

A laboratory study was conducted on the removal of nitrogen and phosphorus from piggery wastewater during growth of Botryococcus braunii UTEX 572, together with measurements of hydrocarbon formation by the alga. The influence was tested of the initial nitrogen and phosphorus concentration on the optimum concentration range for a culture in secondar...

A dye acid red 114 (C.I. 23635) was photochemically removed by adding ferric ion (Fe3+), TiO2 particles, and H2O2 in the presence of the UV radiation. The removal rates of the acid red 114 (C.I. 23635) dye were 0.183, 0.210, and 0.233 mg/l/min when the concentrations of Fe3+ were 50, 100, and 130 mg/l. The removal rate of the dye increased from 0.1...

Data were consisted of the ten body measurements (withers height, rump height, body length, chest depth, chest width, rump width, rump length, thurls width, hipbone width and chest girth) of 642 steers (Korean cattle), which was entered in the National Beef Quality Contest hosted by the Korea Animal Improvement Association from 1997 to 2001. A prin...

Repeatabilities and Correlations among Average Daily Gain, Backfat Thickness and Lean Percent in Swine The repeatability, correlation and rank correlation coefficients among average daily gain, backfat thickness and lean percent were estimated on the basis of records tested from August 1999 to February 2000 with 695 pigs of Duroc, Landrace and York...

This study was conducted to estimate the heritabilities and genetic and phenotypic correlations among average daily gain, age at 90kg and backfat thickness in Yorkshire pigs. The data were obtained from 2,111 heads of Yorkshire tested at National Livestock Research Institute from May, 1994 to April, 2000. Genetic parameters were estimated with a mu...

Direct and service sire genetic parameters for total number of pigs born (TNB), number of pigs born alive (NBA), total pig weight at birth (TWB), and average pig birth weight (ABW) were estimated by DF-REML under a multiple trait animal model. Data on 3,078 litters of the Yorkshire from Jan, 1975 to Dec, 1998 at National Livestock Research Institut...

Experiments were performed to investigate the effects of operating parameters, such as air-inflow rate, UV-light intensity, and film thickness of the photocatalyst, on the photo-decomposition efficiency of paraquat in an immersion-type reactor with TiO2 immobilized by three kinds of methods on the glass tube of UV lamps. As the number of TiO2 coati...

This study was conducted to investigate the genotypes and frequencies of Melanocortin 1 Receptor(MC1R) genes in pigs which plays a central role in regulation of eumelanin (black/brown) and phaeomelanin(red/yellow) pigment synthesis within the mammalian melanocytes. Four different breeds of pigs(20 Landrace, 20 Yorkshire, 20 Duroc, and 93 Jeju nativ...

Application of atmospheric pressure plasma as an alternative technology for the destruction of toluene is demonstrated in this study. Used TiO2 colloidal solution was obtained by an improved sol–gel method, and coated on glass beads to prepare decomposition of toluene. The physical property of synthesized TiO2 catalyst film was analyzed by XRD and...

Six kinds of recombinant E.coli, which releases &#35-galactosidase by an SOS regulon system when exposed to DNA-damaging compounds, have been used to effectively monitor endocrine disruptors such as tributyltin (TBT) and dimethylsulfoxide (DMSO). First of all, the maximum response ratio by E. coli ACV 1003 (recA::lacZ) was shown as 7.4 in a concent...

Colloidal solutions containing nano-sized TiO2 particles were successfully obtained by adding a small amount of water and employing solvothermal method. A thin film obtained from this colloidal solution (Cat. 2) exhibited much better properties than another film obtained via a sol–gel method (Cat. 1). The former had smaller and more uniform TiO2 pa...