• FLOWER RESEARCH JOURNAL
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• v.16 no.1
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• pp.57-62
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• 2008

The objective of this study was to investigate the effect of triazole compounds [hexaconazole ($50mg{\cdot}L^{-1}$), diniconazole ($50mg{\cdot}L^{-1}$), myclobutanil ($150mg{\cdot}L^{-1}$), difenoconazole ($50mg{\cdot}L^{-1}$), tebuconazole ($500mg{\cdot}L^{-1}$), and bitertanol ($50mg{\cdot}L^{-1}$)] on commercial quality improvement of cut flowers of Dendranthema grandiflorum 'Baegkwang' Plant height, cut flower length and internode length decreased by all triazole compounds. Plant height, cut flower length, internode length and flower neck length were shortened by treatment of $50mg{\cdot}L^{-1}$ diniconazole and $500mg{\cdot}L^{-1}$ tebuconazole. Flower neck was thickened by hexaconazole and myclobutanil. Flower diameter increased with myclobutanil and bitertanol, while it decreased with tebuconazole. Among physiological injury, open center increased with bitertanol treatment. Overall $50mg{\cdot}L^{-1}$ diniconazole and $500mg{\cdot}L^{-1}$ tebuconazole showed a possitive effect on length flower neck and increasing chlorophyll content, while decreasing plant height, cut flower length and diameter of flowers. Thus it is necessary to consider kind, concentration, and treatment times for effective control of cut flower quality.

• YAKHAK HOEJI
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• v.49 no.1
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• pp.51-55
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• 2005

In vitro ${\beta}$-lactamase inhibitory activity of 6-triazole exomethylenepenam compounds (1, 2, 3, 4, 5 and 6) was compared with clavulanic acid, sulbactam and tazobactam. The inhibitory activity of 3, 4 and 5 was stronger than those of sulbactam, clavulanic acid and tazobactam against Type IV enzymes. And, inhibitory activity of 3 and 4 was stronger than those of sulbactam, clavulanic acid and tazobactam against Type III enzymes. The in vitro antimicrobial activity of 3, 4 and 5 combined with ampicillin was better than those with sulbactam and with cefoperazone was compared with the sulbactam against ${\beta}$-lactamase producing 27 strains. The synergistic activity of (Z)-form compounds (3 and 5) was better than that of (E)-form compound (4) and sulfone compound (5) was better than sulfide compound (3).

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.249-256
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• 2019

Lueco-crystal violet(LCV) is a very effective reagent used to enhance bloodstain. However, when the LCV is treated to the bloody fingerprint, the bubbling occurs, so that the minutiae and features of the fingerprint can be damaged. In this study, we studied a method to reduce the bubbling of LCV. As a result, the most effective method for reduction bubbling and enhancement bloodstain was to treat ethanol-based aminotriazole(AT) solution before LCV treatment.

• Textile Coloration and Finishing
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• v.31 no.2
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• pp.118-126
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• 2019

This study aims to investigate the effect of polytriazolesulfone(PTS) addition on fracture toughness of diglycidyl ether of bisphenol A(DGEBA) and 4,4'-diaminodiphenylsulfone(DDS). Various amounts of PTS were added to DGEBA/4,4'-DDS in diazide and dialkyne monomer forms and polymerized during the epoxy curing process. Fracture toughness(K1C), tensile properties and thermal stability of the PTS added epoxy resin were evaluated and compared with those of PES, the conventional high Tg toughening agent, added epoxy resin. Fracture toughness of the PTS added epoxy resin was dramatically improved up to 133%, as the amount of PTS added increased, whereas that of the PES added epoxy resin was improved by only 67%. The tensile strength of PTS added DGEBA/4,4'-DDS was similar to the epoxy resin without PTS and tensile modulus was improved by 20%. And thermal stability of the PTS added epoxy resin was improved up to 14%. Therefore, PTS addition to DGEBA/4,4'-DDS, as a toughening agent, is very effective way to improve its fracture toughness without any lowering in other properties.

• Journal of Bio-Environment Control
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• v.16 no.3
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• pp.205-209
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• 2007

This experiment was conducted to investigate the growth of plug seedlings and yield of tomato affected by the concentration of triazole and the treatment time. The length and leaf area of tomato seed-lings were reduced by the application of triazole compared to control. Growth reduction of seedlings was greater by earlier application and higher concentration of triazole. The growth of tomato treated with hexaconazole were similar with control 4 weeks after sowing. The triazole treatment lowered the height of the first fruit set compared to control. However, triazole treatment did not affect the number of fruits and yield.

• The Korean Journal of Pesticide Science
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• v.11 no.2
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• pp.117-124
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• 2007

Esterase activity was observed after pesticides treatment in eggs of H. axyridis to select low toxicity pesticide. Egg esterases of H. axyridis were examined using an esterase substrate(${\alpha}$-naphthyl acetate). Three esterase isozymes were detected and the activities were inhibited by organophosphorus insecticide (Chlorpyrifos and Phenthoate), organochlorine insecticide(Methidation), triazole fungicide(Hexaconazole and Triflumizole), and pyrimidine fungicide(Nuarlmol). Fecundity and hatchability in adults and eggs of H. axyridis were examined on selected pesticides. Fecundity and hatchability were significantly reduced from H. axyridis adults and eggs treated with the pesticides and the fungicides showed strong inhibition of esterase isozymes activities. However, we also observed the pesticides and the fungicides showed low or non-inhibition of esterase isozymes activities affected on fecundity and hatchability in adults and eggs.

• Analytical Science and Technology
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• v.17 no.2
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• pp.98-107
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• 2004

In this study, $^1H$ NMR spectroscopy and HPLC were used to identify the type and quantity of each component in an acrylic coating materials applied for an automotive part. By the $^1H$ NMR analysis, it was found that this acrylic coating contained about 88.40 wt% of poly methyl methacrylate (PMMA), 7.05 wt% of methyl methacrylate (MMA), and 2.36 wt% of allyl methacrylate. Polymer additives such as a benzotriazole light stabilizer (Hisorb 328), an oxanilide light stabilizer, butylated hydroxy toluene (BHT), and dimethyl phthalate (DMP) were also identified and measured quantitatively from the $^1H$ NMR spectra. However, only two light stabilizers were identified by reverse phase (RP) HPLC analysis using Bondapak C18 column, methanol mobile phase, and a PDA (Photodiode array) detector. The contents of two light stabilizers in the acrylic coating were measured by a quantitative analysis through UV-Vis spectroscopy and compared with the NMR data. The analytical informations from $^1H$ NMR spetra were better than those from HPLC-PDA plot.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.482-487
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• 2016

Ultra-violet rays are very harmful to eye health care. The blocking of ultra-violet rays and a reduction of optical reflection in the visible light range, which is to increase the share of transmitted light, and avoid the formation of ghost images in imaging, are important for the applications of polymer eyeglasses lenses. In this study, the high-refractive index polymer lenses, n=1.67, were fabricated by injection-molded method with the xylene diisocyanate monomer, 2,3-bis-1-propanethiol monomer, and benzotriazol UV absorber (SEESORB 709) mixture. To reduce the reflection of the polymer lens surfaces, multi-layer anti-reflection (AR) coatings were coated for both sides of the polymer lens using an E-beam evaporation system. The optical properties of the UV blocking polymer lens were characterized using a UV-visible spectrometer. The material properties of the thin films, which were composed AR coating layers, refractive index, and surface roughness, were analyzed by ellipsometry and atomic force microscopy. As a result, the fabricated polymer lens perfectly blocked ultra-violet rays below 395 nm with a blocking rate greater than 99%.

• Horticultural Science & Technology
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• v.30 no.3
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• pp.229-235
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• 2012

This study was carried out to examine the effects of foliar-sprayed diniconazole on the morphological characteristics and the contents of polyamines (PA) and proline, and to investigate their relationship with stress tolerance in Lilium davuricum native to Korea. Plants with 5 cm mean height were sprayed with $50mg{\cdot}L^{-1}$ diniconazole or distilled water (control) and grown in a greenhouse maintained at 23/$18^{\circ}C$ (day/night) for 30 days. Diniconazole decreased plant height, leaf length, diameter and length of the pith and cortical cell of the stem, while it increased the thickness and epicuticular wax of leaves measured at 30 days after treatment. In polyamines contents, diniconazole increased spermidine content at 5-10 days after treatment and spermine content after the 10th day of treatment as compared with the control. Diniconazole decreased proline content after the 10th day of treatment as compared with the control. From these results, it was concluded that foliar-sprayed diniconazole might morphologically and biochemically improve the stress tolerance of this plant species.

• Journal of Bio-Environment Control
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• v.29 no.4
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• pp.365-372
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• 2020

This study was conducted to compare the effects of foliar spray and sub-irrigation of the triazole fungicide diniconazole on the regulation of stem elongation and to investigate the stimulation of root system development during the seedling stage. Comparing the two application approaches, there were significant differences in the leaf area, leaf area ratio (LAR), plant height, compactness, fresh shoot and root production, relative growth rate (RGR), and root to shoot ratio (R/S). At the same application concentration, the sub-irrigation showed a better retarding effect on growth than the foliar spray, because the PGR activity of diniconazole in root absorption was higher than that in shoot absorption. For reaching a target of 20% to 30% inhibition rate of stem length, foliar application concentration of diniconazole exceeded 10, however, only approximately 1 was required in the sub-irrigation application. The root system of tomato seedlings responded strongly to diniconazole application. Total root length, root volume, root average diameter, and the number of root tips increased when diniconazole was sub-irrigation application at 1. A reduction in fine roots (diameter range of 0 to 0.3 mm) and an increase in the roots with a diameter range of 0.3 to 0.6 mm was observed, and this may contribute to the increase in average diameter. The increase in root average diameter may be positive because root penetration increases with root diameter. Our results suggested that sub-irrigation maximized the PGR activity of diniconazole to enhance the retarding effect. And it also possible to enhance the tomato seedling root system by diniconazole stimulating with a lower concentration.