• Journal of the Architectural Institute of Korea Structure & Construction
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• v.34 no.3
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• pp.29-36
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• 2018

In this study, the moisture contents of four Hanoks have been monitored and the results were analyzed. Murujeong and Ongojae were built by traditional construction method and material, and Jeeshinjae and Hwakyeongdang were built by modernized construction method and material. Hwakyeongdang was monitored about 2 years and 9 months and the other three Hanoks were monitored about 4 years and 2 months. The surface moisture contents were measured by the non-destructive electronic resistant type moisture content meter. The measured moisture contents were affected by the orientation to the sun, wood type, temperature and relative humidity. The columns on the northern side and lumber showed more moisture contents than those of the southern side and glue-laminated wood. The moisture contents and relative humidity showed proportional relationship. The moisture contents of all four monitored Hanoks existed proper range by and large.

• Journal of the Korean Society of Tobacco Science
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• v.13 no.1
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• pp.61-68
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• 1991

The moisture contents of threshed leaf tobacco during aging storage were very important factor for the improvement or deterioration of leaf quality. Decay and carbonization of leaf tobacco were mainly controlled by moisture contents during storage. The influence of moisture contents on the decay and carbonization of threshed leaf tobacco (Flue-Cured, Var. NC 82. AB3O-1 grade) were examined during 1 year. The moisture contents of leaf tobacco were treated to 3 kg as 12% (controle), 16%, 20% and 24% after redrying, respectively, These tobacco were put into center of carton box containing about 200kg with 12%'s tobacco, and then packed and stored from June, 1988 under natural weather condition in warehouse at Ock-Cheon threshing plant. Samples were taken from dissected carton box at 0, 1, 2, 4, 7 and 12 months after moisture treatment and Racking time, and some chemical properties were investigated at every sampling time. In results of inducement to decay and carbonization of leaf tobaccos during 1 year's storage by moisture treatment. decayed leaf was appeared but carbonized leaf did not. Calorification and decayed leaf occurred at high moisture contents above 20%, and these phenomena were appeared between 30 and 150 days after moisture treatment and packing. High moisture content leaves (above 20%) caused nearby other leaves to be sunk with high moisture content. Nicotine and calcium contents were increased to 20%~30% and 10%~22%, respectively, but total sugar contents was decreased to 40%~60% by moisture treatment(20% ~24% ).

• Journal of the Korea Furniture Society
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• v.24 no.1
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• pp.104-112
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• 2013

Monitoring for moisture contents of wooden post member of Un-bong confucian school was performed in 6 months and analyzed to conserve scientifically the wooden culture building and open for common people. In inner post member of the building, variation of moisture contents was very small and upper part had relatively higher moisture contents. In outer post member, moisture contents were changed according to the weather conditions and was relatively high in bottom and upper part. Southern post has lower moisture content than eastern. These results were related to air ventilation in interior, depth of eaves and orientation of the building. In the design, construction and maintenance of wooden building, characteristics of wood should be considered like moisture contents.

• Journal of the Korean Wood Science and Technology
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• v.37 no.5
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• pp.459-464
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• 2009

This study was conducted to find the relationship between the moisture content and basic density of green lumber and the final moisture content of kiln dried lumber. The possibility of using a ultrasonic nondestructive testing technology was investigated. Four matched 2-foot long boards were kiln-dried for 12, 24, 36 and 48 hours. Twenty three slices were cut to examine the distribution of moisture content along the length. It was revealed that the green weight was a better estimator of the final moisture content of the kiln-dried board than the green moisture content. The standard deviations of the moisture contents of the slices were not correlated with the final moisture contents of the kiln-dried boards. The two ultrasonic devices used for this study were apparently good tools for NDT.

• Journal of the Korean Society of Tobacco Science
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• v.23 no.1
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• pp.40-44
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• 2001

This study was carried out to investigate relationship between contents of moisture and chemical components in burley tobacco after heat treatment. Initial moisture contents of burley tobacco was 32% after cutting and casing. Burely cut tobaccos were treated at various temperature(10$0^{\circ}C$, 13$0^{\circ}C$, 145$^{\circ}C$ and 16$0^{\circ}C$) and time(0, 5, 10, 15, 20 and 30 min) in mechanical convection oven. Moisture contents of burley tobacco after heat treatment were in the range of 1.9% to 18.4%. Relationship between moisture contents and total sugar, pH, total volatile base, ammonial, L value of color, nicotine, nornicotine, and $\beta$-nicotyrine contents were positively correlated. Correlation between moisture contents and crude ash, ether extracts, 2,6-deoxyfructosazine, 2,5-deoxyfructosazine, a value of color, citric acid, m-xylene, ${\gamma}$-butyrolactone and 5-methyl-2-furfural were negative.

• Korean Journal of Plant Resources
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• v.35 no.6
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• pp.762-769
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• 2022

Growth characters and ingredient contents of two-year-old bellflower (Platycodon grandiflorum) roots were investigated under both control and soil moisture treatment condition using soil moisture control system including soil sensing and automatic water supply chain in this study. Root diameter, fine root number, root length, fresh weight and dry weight of the plant were significantly influenced by the automatic water treatment, 20%, 30%, 40% and 50%, respectively. Ingredient contents of the two-year-old roots in bellflower plants were detected in the 20% and 50% of controlled soil moisture content. Contents of amino acids were decreased by the soil moisture treatment, meanwhile, contents of minerals were not showed significant decrease except for phosphorus content. Showing no difference in proline and tyrosine, fourteen of the amino acid contents were gradually decreased by the increased soil moisture contents, with significant decrease in serine, glycine, alanine, leucine, lysine and histidine at 20% treatment.

• Journal of the Korean Society of Tobacco Science
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• v.27 no.2
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• pp.201-206
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• 2005

In this work, we studied the effects of the moisture contents of cut tobacco on loose end of cigarettes. The loose end of the cigarette groups decreased with the increase of moisture contents of the cut tobacco and especially the loose end of A and C groups decreased to $31\%\;and\;52\%$ with the increase of $1\%$ moisture contents. $A-13.5\%\;and\;B-14.0\%\;and\; C-14.0\%$ moisture samples showed the increase of the weight ratio of cut tobacco over 1.4mm cut length but the decrease under 1.4mm cut length. We concluded that the main reasons were regarded to reduction of small fragment tobaccos caused by increase of moisture contents and exception of air-suction transport of tobaccos to cigarette making machine. In spite of the moisture increase of cut tobaccos under fixed EPD(encapsulated pressure drop), the hardness of Band C sample groups were maintained constantly except A group. This result means that under fixed EPD, the weight of cut tobacco in cigarette rods increases to compensate the reduction of pressure drop by moisture increase of cut tobaccos.

• Journal of the Korean Wood Science and Technology
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• v.36 no.2
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• pp.20-28
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• 2008

This study was carried out to provide the so-called circumferential slicing method for investigating radial distributions of the tangential strains and of moisture contents within the log cross section (LC) of Kalopanax pictus during indoor drying it. While the heartwood showed an almost uniform moisture content distribution in the range of about 50~55% in case of the green wood, it has gradually decreased toward the outer side, showing about 19% of moisture content difference from the innermost slice. Although the moisture gradient along the radial direction has gradually become gentle as drying progresses, the sapwood of the outer side represented the moisture contents below the fiber saturation point after 24 hours of drying while the heartwood in the inner part showed the moisture contents higher than the fiber saturation point. The pith side was laid under the tensile stress after 24 hours of drying, and then gradually decreasing toward the bark side, and showed the distribution being switched again to the tensile stress on the bark side. As the drying has progressed, this trend got more intensified, and finally showed the U-shaped distribution model after 48 hours of drying. The circumferential slice test is considered to be suitable in quantitatively determining the tangential strains and moisture content within a LC.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.33-36
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• 2008

This paper presents soil moisture retrieval from measured polarimetric backscattering coefficients of a vegetated surface. Based on the analysis of the quite complicate first-order radiative transfer scattering model for vegetated surfaces, a simplified scattering model is proposed for an inversion algorithm. Extraction of the surface-scatter component from the total scattering of a vegetation canopy is addressed using the simplified model, and also using the three-component decomposition technique. The backscattering coefficients are measured with a polarimetric L-band scatterometer during two months. At the same time, the biomasses, leaf moisture contents, and soil moisture contents are also measured. Then the measurement data are used to estimate the model parameters for vv-, hh-, and vh-polarizations. The scattering model for tall-grass-covered surfaces is inverted to retrieve the soil moisture content from the measurements using a genetic algorithm. The retrieved soil moisture contents agree quite well with the in-situ measured soil moisture data.

• Proceedings of the KIEE Conference
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• 2005.07e
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• pp.79-81
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• 2005

Chemical methods for moisture contents detection of insulation system in transformer must dismount equipment for sampling, and there is shortcoming such as acquiring partial data for measuring. Also the samples can't immediately analyze in field. The Recovery Voltage Method (RVM) will be able to measure a moisture contents at low voltage without dismounting equipment. Therefore, in advanced countries RVM would be used to measure the moisture contents which permeates to the insulation system without weighting additive degradation or mechanical damage. In this paper we have investigated for overcoming these shortcomings using the RVM, and we have measured the moisture contents of transformer insulation with temperature.