• Title/Summary/Keyword: Moisture Management

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Liquid Moisture Management and Surface Properties of the Fabric in Transient Condition (작업복 소재 직물의 액상 수분 전달 특성 및 표면특성 연구)

  • 유신정
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.1
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    • pp.61-70
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    • 2001
  • As important factors determining human sensorial comfort, liquid moisture management and surface properties of heat resistant workwear materials were examined. To figure out liquid moisture management properties of the test materials, absorption capacity, rate of absorption, and evaporation properties were assessed. A modified GATS(Gravimetric Absorbency Testing System) was used to measure the liquid moisture accumulation associated with the wicking of liquid moisture from sweating skin. The GATS procedure measures demand wettability of materials to take up liquid in a direction perpendicular to the fabric surface and it was modified to incorporate a special test cell and cover to assess absorption behavior in the presence of evaporation. Fabric stiffness, smoothness, number and the length of surface fibers, and an estimate of the contact area between the skin and fabric surface were measured to characterize the mechanical and surface properties of the test materials. Also an estimate of the force with which a fabric clings to moist skin was made using as wet-cling index.

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Comparative Analysis of Dynamic Moisture Movement Testers

  • Lee, Duck-Weon;Shim, Woo-Sub;Lim, Ho-Sun
    • Journal of Fashion Business
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    • v.15 no.6
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    • pp.40-55
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    • 2011
  • The purpose of this research is to review testing principle, testing design and experimental results of the four dynamic moisture movement testers. The research analyzes Moisture Manager Tester (MMT), Alambeta Instrument, Dynamic Surface Moisture Movement Tester, and Gravimetric Absorbent Testing Method based on American Society for Testing and Material (ASTM) E 96 which is an international standard testing method. Although many of researches use ASTM E 96 to measure moisture movement on a fabric, it has several weaknesses, such as long experimental time and a physical change of sample by a holder of the frame. Hence, lots of researchers have studied and developed the new measurement systems measuring moisture management on a fabric or garment and ultimately mimic heat energy and perspiration created by the human body. These moisture management systems use a variety of parameters, such as electricity, color, and sensor to measure their movement in the fabric. Through comparison with the existing tester (ASTM E 96), the research recognizes the strength and weakness in the dynamic moisture movement testers.

Moisture Vapor Management Properties of Fabrics Determining Human Sensorial Comfort in Transient Conditions (동적 상태에서 주관적 착용감에 영향을 미치는 직물의 수증기상태의 수분전달 특성)

  • ;Roger L. Barker
    • Journal of the Korean Society of Clothing and Textiles
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    • v.24 no.7
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    • pp.1073-1080
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    • 2000
  • Moisture transfer property of fabrics has known as one of the most important factors deciding wearer's subjective comfort not only thermally but also of sensorial. As a decisive property of fabric materials in determining human sensorial comfort, moisture vapor management property of heat resistant workwear material was examined in terms of increasing and decreasing rate and maximum value of relative humidity in the microclimate under the sweat pulse situation. An unique moisture regulation index, B$_{d}$, was calculated from the measurements using a novel dynamic sweating hot plate apparatus and was used to assess the buffering capacity of fabrics against a moisture vapor sweat pulse.e.

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Soil Moisture Extraction Characteristics of Cucumber Crop in Protected Cultivation (오이 시설재배지에서의 토양수분 소비특성 분석)

  • Hong, Eun Mi;Choi, Jin-Yong;Nam, Won Ho;Kang, Moon-Seong;Jang, Jeong-Ryel
    • Journal of The Korean Society of Agricultural Engineers
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    • v.56 no.2
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    • pp.37-46
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    • 2014
  • Water for crop growth were supplied by irrigation in protected cultivation and these are accumulated in the soil and utilized for crop evapotranspiration. The study for analyzing soil moisture characteristics is necessary for adequate irrigation water and soil water management in protected cultivation. Soil moisture content, irrigation water quantity and meteorological data were monitored to analyze soil moisture increment and extraction characteristics in terms of soil layers and cucumber crop growth stages. In first cropping period, the total amount of irrigation water was 5.07 mm/day, soil moisture increment was 4.82 mm/day and soil moisture extraction was 5.56 mm/day. In second cropping period, the total amount of irrigation water was 4.82 mm/day, soil moisture increment was 4.65 mm/day and soil moisture extraction was 4.73 mm/day. Soil moisture extraction rate from 0 to 75 cm is 90.3 % in first cropping period and 79.1 % in second cropping period. The majority irrigation water were consumed in root zone, however, about 15 % of soil moisture were losses by infiltration in lower soil layer. Soil moisture extraction and extraction pattern of cucumber crop calculated in this study can be utilized as a basic data for irrigation water management in protected cultivation.

A study on the impact on predicted soil moisture based on machine learning-based open-field environment variables (머신러닝 기반 노지 환경 변수에 따른 예측 토양 수분에 미치는 영향에 대한 연구)

  • Gwang Hoon Jung;Meong-Hun Lee
    • Smart Media Journal
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    • v.12 no.10
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    • pp.47-54
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    • 2023
  • As understanding sudden climate change and agricultural productivity becomes increasingly important due to global warming, soil moisture prediction is emerging as a key topic in agriculture. Soil moisture has a significant impact on crop growth and health, and proper management and accurate prediction are key factors in improving agricultural productivity and resource management. For this reason, soil moisture prediction is receiving great attention in agricultural and environmental fields. In this paper, we collected and analyzed open field environmental data using a pilot field through random forest, a machine learning algorithm, obtained the correlation between data characteristics and soil moisture, and compared the actual and predicted values of soil moisture. As a result of the comparison, the prediction rate was about 92%. It was confirmed that the accuracy was . If soil moisture prediction is carried out by adding crop growth data variables through future research, key information such as crop growth speed and appropriate irrigation timing according to soil moisture can be accurately controlled to increase crop quality and improve productivity and water management efficiency. It is expected that this will have a positive impact on resource efficiency.

A Study on the Management Plan of Water Environment of Ferns in the Interior Landscape (실내조경에 있어서 양치식물의 수분환경 관리방안에 관한 연구)

  • 주진희;방광자;설종호
    • Journal of the Korean Institute of Landscape Architecture
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    • v.27 no.1
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    • pp.122-131
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    • 1999
  • Indoor environments are usually less than optimal for the growth of ferns, especially in regards to the water condition. These studies were performed to investigate responses involved in causing growth of ferns and presume management plan against the water deficit under indoor conditions. The effect of air humidity and soil moisture on the ferns was examined in Adiantume raddianum and Selaginella kraussiana. Results of experiments are as follows; 1. Under a low humidity condition, having a 25-50% RH. ornamental value of ferns decreased much more than under a 90% RH. Under a low soil moisture, such as sand treatment, ornamental value of ferns also decreased. 2. Leaf chlorophyll content, water content and stomata situations increased as air humidity and soil moisture went up. 3. Even if air humidity and soil water were not enough for ferns growth, the extending of irrigation cycle was helpful. 4. Under extremely low air humidity conditions, some water management, namely, using water holding soil or extending of irrigation cycle was desirable. Other methods of increasing air humidity, including water instruments such as ornamental pools, waterfalls, or fountains, grouping plants together were also helpful. But spraying water on leaves increased injury to ferns growth because of excess evaporation from the leaves. Though these studies, we learn that ferns are susceptible to water condition such as air humidity, soil water and water management. If other environmental factos are maintained with optimal conditions, water condition plays an important role in ferns growth in indoor environments.

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Property Evaluation of Breathable Blend Fabric of MPCE Copolymer and Wet Coagulated Polyurethane (MPCE copolymer와 습식 폴리우레탄의 블렌드에 의한 투습방수 나일론 직물의 제반 물성변화에 관한 연구)

  • Yi, Jong-Woo;Chae, Ei-Jung;Bae, Jin-Seok
    • Textile Coloration and Finishing
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    • v.26 no.4
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    • pp.322-330
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    • 2014
  • The phospholipid-based MPCE(2-Methacryloxyethyl Phosphoryl Chlorine) copolymer was mixed with wet polyurethane for coating of nylon fabrics. The substitution rate of water in coagulation bath with DMF was changed under control of the size of formed hydrophilic microporous cell enable to manufacture excellent breathable, anti-bacterial and moisture control fabrics. Biocompatible property, vapor permeability, hydrostatic pressure, moisture management and anti-bacterial property were investigated for treated nylon fabrics. In result, increased moisture transmission rates, decreased water resistance and outstanding moisture control property could be confirmed by enhanced hydrophilicity of wet-coated nylon fabric with MPCE copolymer.

Analyzing Growth Reactions of Herbaceous Plants for Irrigation Management

  • Jeong, Myeong Il;Jeong, Na Ra;Han, Seung Won;Kim, Jae Soon
    • Journal of People, Plants, and Environment
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    • v.23 no.3
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    • pp.255-265
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    • 2020
  • Background and objective: The purpose of this study was to provide guidelines for irrigation management by analyzing the effects of soil moisture on the growth characteristics of herbaceous plants in green infrastructure. Methods: In a rain shelter greenhouse, the growth performance of nine species of experimental plants was assessed under different soil moisture contents (20%, 15%, 10%, 5%, and 1%) for about 5 months to analyze plant growth characteristics due to soil humidity. Methods to determine plant growth conditions include surveying growth conditions of the crowns, stems, leaves, flowers and fruits on the aerial part and surveying growth conditions of the roots in the underground part. Results: The results showed that Mukdenia rossii and Astilbe rubra grew well at 15% moisture content with irrigation intervals of 10 and 13 days, respectively. Soil moisture content of 10% with irrigation intervals of 13 and 17 days was appropriate for Sedum kamtschaticum and Pachysandra terminalis. Similarly, Aquilegia japonica and Liriope platyphylla grew well at 15% moisture content with irrigation intervals of 10 and 17 days. However, Ligularia stenocephala grew well-developed stems and roots at 1% soil moisture content and an irrigation interval of 25 days, while the optimum conditions for Lythrum anceps were 5% moisture content and an irrigation interval of 8 days. Conclusion: Although a limited number of experimental plants were used in this study, this study could propose an appropriate irrigation cycle for planting on artificial soil substrates. Based on these results, it is possible to plan suitable planting designs considered irrigation cycles.

Flower water management system by wireless sensor network (무선센서 네트워크를 활용한 화초 수분관리 시스템)

  • Park, Sang-Gug
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2010.10a
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    • pp.516-519
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    • 2010
  • In this paper, we propose to improve conventional methods, which measure moisture level in the soil and supply proper water by a hand operation. Our system use wireless sensor network between sensor node and host PC. The measurement system measure moisture level by use moisture sensor. The control system control electronic solenoid switch and supply proper water automatically.

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Quality Characteristics of Baked Yackwa Made with Goami Powder Added Oil (고아미 가루로 만든 구운 약과의 기름 첨가량에 따른 품질 특성)

  • Kim, Hyun-Ah;Lee, Kyung-Hee
    • Journal of the East Asian Society of Dietary Life
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    • v.22 no.4
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    • pp.514-520
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    • 2012
  • This study examined the effects of various oils used in the preparation of goami baked Yackwa dough on the quality characteristics of goami baked Yackwa. To determine the optimal amount of oil for goami powder Yackwa dough, the hardness and moisture contents of both the flour and goami powder dough were measured. Dough hardness was the highest in flour Yackwa while moisture contents was the highest in goami Yackwa. Baked weight and dip syrup weight were heavier in flour. Hardness, a-values, and b-values were the highest in flour Yackwa, whereas moisture contents and L-values was the highest in goami Yackwa. In a sensory evaluation, overall preference was the highest for goami Yackwa and flour Yackwa made with 10% oil.