• Title/Summary/Keyword: Weight Losses

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Pathogenic Effects of the Microsporidian Nosema sp., on Larval and Post-cocoon Parameters in Tasar Silkworm, Antheraea mylitta Drury (Daba TV)

  • Renuka, G.;Shamitha, G.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.26 no.1
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    • pp.1-12
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    • 2013
  • The commercial rearing of polyphagous Indian tasar silkworm, Antheraea mylitta Drury being practiced on naturally grown primary food plants like Terminalia arjuna, (Arjun) Terminalia tomentosa (Asan), and Shorea robusta (Sal) available in the tropical forests of central India, at times, is seriously affected by the disease- Pebrine, caused by Nosema sp., a microsporidian pathogen. The present investigation on comparative larval, silk gland weight and also cocoon parameters in Pebrine-free and Pebrine-infected ecorace of tasar silkworm Antheraea mylitta Drury (Daba TV), illustrates the tasar silkworm larvae infected with pebrine disease causing heavy losses to the economy of the silk industry.

Effects of High Relative Humidity on Weight Loss, Color Change, and Microbial Activity of Tomatoes during Refrigerated Storage

  • Pai, Tongkun
    • Journal of Applied Biological Chemistry
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    • v.43 no.4
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    • pp.250-253
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    • 2000
  • The effects of high relative humidity (RH) on the physicochemical properties and microbial activity of mature green tomatoes ('Dombito') during refrigerated storage were determined at three temperatures (5, 10, and $15^{\circ}C$) and four different RH levels (91, 94, 97, and 99%). At each temperature, the weight loss rates of tomatoes at different levels of RH were significantly (p<0.05) different from each other. For the samples stored at $10^{\circ}C$, the weight losses were generally higher than those for the samples at $15^{\circ}C$ within the same RH level (i.e., greater vapor pressure deficit). The color change rates ('a' value) showed positive slopes, indicating that the tomato color was changing from green to red. Neither bacteria nor fungi caused visible damages to the samples, and the microbial counts were below 650 colony forming units/$cm^2$ during the test period.

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The Effect of Fixing Agents and Softner on Sericin Fixation of Trimethylolmelamine (트리메틸올멜라민의 세리신 정착에 있어 정착제와 유연제의 영향)

  • Park, Geon-Yong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.5
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    • pp.93-98
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    • 2017
  • The fixing behaviors of raw silk yarns treated with melamine and formaldehyde at a molar ratio of 1:3 for trimethylolmelamine were investigated. Sericin was fixed during the fixing process, but a part of sericin I was removed simultaneously by hot water. The weight losses by fixing and the degumming losses by degumming greatly decreased with increasing concentrations of melamine and formaldehyde. The silk yarns fixed with 0.011 M melamine and 0.033M formaldehyde were significantly degummed due to the insufficient fixation of sericin and the alkaline hydrolysis of sericin by sodium carbonate during the degumming process. On the other hand, the silk yarns fixed with 0.055M melamine and 0.165M formaldehyde were degummed slightly (the degumming losses of 3-8%) due to the strong fixation of sericin, which might result from the many cross-linkages between the sericin I molecules, which were formed by trimethylolmelamine. Those fixed with the fixing solution containing 15% owf softener showed the lowest weight and degumming losses because under the condition of 15% owf softener, the cation of the softener can effectively form ionic bonds with the negatively charged side chain of aspartic acid in sericin. In addition, van der Waals' forces may be also formed between the hydrophobic tail of the softener and the hydrophobic region of sericin, which may help inhibit the removal of sericin I.

Effect of Bitter Melon on Plasma Blood Glucose and Cholesterol Levels in Streptozotocin Induced Diabetic Rats (당뇨 유발 흰쥐에서 여주열매 첨가 시 혈당과 콜레스테롤 수준에 미치는 영향)

  • Kim, Myung-Wha
    • Journal of the East Asian Society of Dietary Life
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    • v.23 no.6
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    • pp.704-712
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    • 2013
  • This study was designed to examine the effects of bitter melon (BM) on the plasma blood glucose and cholesterol levels in diabetic rats. Diabetes mellitus was induced in male Sprague-Dawley rats through an injection of streptozotocin (STZ) dissolved in a citrate buffer into the tail vein at a dose of 45 mg/kg of body weight. Sprague-Dawley rats were then fed for four weeks, with the experimental groups receiving a modified diet containing 5% or 10% powder derived from BM. The experimental groups were divided into 4 groups, consisting of the normal control group, STZ-control group and diabetic fed with BM 5% & 10% treated groups. The rats' body weight, blood glucose and cholesterol values were measured along with the hematocrit (Hct) values and aminotransferase activities. Body weight losses were observed in the diabetic groups, whereas the control rats gained weight. There were significant differences in kidney weight between the control group and the diabetic groups. The Hct levels of the diabetic BM-treated group were significantly higher than the STZ-control group. Aspartate aminotransferase activity was lower in the non-diabetic group compared to the diabetic experimental groups. Further, the blood glucose was significantly decreased in the 5% & 10% BM of the diabetic group. There were no significant difference in cholesterol levels among the diabetic groups. These results indicate that the supplementation of bitter melon may have a favorable influence on reducing the blood glucose level in STZ-induced diabetic rats.

Properties of Alkali Hydrolyzed Polyester Fabric by CDR/Liquor-Flow Type (연속/액류방식에 의한 폴리에스테르 직물의 감량특성)

  • Seo, Mal-Yong;Park, Han-Do;Park, Ki-Su;Han, Sun-Ju
    • Textile Coloration and Finishing
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    • v.9 no.4
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    • pp.39-46
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    • 1997
  • In this study, Two types of polyester fabrics were hydrolysed with NaOH using the CDR m/c of pad-steam type and the Sofleena m/c of liquor-flow type to determine the alkali hydrolysis properties of polyester fabrics. The results were as follows: Under the same conditions, the weight loss of charmeuse was about 0.5% and 2~3% higher than that of pebble with CDR m/c and with Sofleena m/c, respectively. The weft density of pebble decreased about 14picks/inch with CDR m/c and 3picks/inch with Sofleena m/c comparing to the untreated sample at 18% of weight loss, while the weft density of charmeuse decreased about 5picks/inch with CDR m/c and 2picks/inch with Sofleena m/c at 20% of weight toss. K/S value decreased almost identically within about 11% weight loss of pebble and 8% of charmeuse processed with both CDR and Sofleena. However, in the above these weight losses, K/S value of the fabrics processed with Sofleena was higher than that of fabrics processed with CDR. The bending rigidity of warp direction of the fabrics ($2{\times}10^{-2}gf.cm^2 /cm$ higher for charmeuse and ($7{\times}10^{-3}gf.cm^2 /cm$ higher for pebble) processed with CDR m/c was higher than that of the fabrics processed with Sofleena m/c.

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A Study on the Handle of the Silk Fabric Degummed with Enzyme - Effect of the Predegumming Degrees on the handle of the Silk Fabric Degummed with Protease - (효소정련 견직물의 태에 관한 연구(II) - 조련정도가 효소정련견직물의 태에 미치는 영향 -)

  • 이용우;김중태
    • Journal of Sericultural and Entomological Science
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    • v.29 no.2
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    • pp.67-72
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    • 1987
  • This study was carried out for the optimum predegumming in the protease degumming process of silk fabrics by ocmparing the physical properties of silk fabrics degummed with different weight losses of predegumming. 1. In twill habutai, the stiffness of fabric was reduced and the smoothness was improved with increasing weight loss of predegmming, however, the soft feeling value which means the total handle value of medium fabric for lady, was maximum at 20% of predegumming weight loss. 2. In the case of crepe de chine representing thin fabric for lady, the anti-drape stiffness was relatively increased with 22% weight loss of predegumming. However, the other physical properties, such as the flexibility with soft feeling were less related to the degrees of predegumming.

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Acoustic Study of light weight insulation system on Dash using SEA technique (SEA 기법을 이용한 저중량 대시판넬 흡,차음재 성능에 대한 연구)

  • Lim, Hyo-Suk;Park, Kwang-Seo;Kim, Young-Ho;Kim, In-Dong
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.05a
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    • pp.51-55
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    • 2007
  • In this paper Statistical Energy Analysis has been considered to predict high frequency air borne interior noise. Dash panel Insulation is major part to reduce engine excitation noise. Transmission loss and absorption coefficient are considered to predict dash insulation performance. Transmission lose is derived from coupling loss factor and absorption coefficient is derived from internal damping loss factor. Material Biot properties were used to calculate each loss factors. Insulation geometry thickness distribution was hard to measure, so FeGate software was used to calculate thickness map from CAD drawing. Each predicted transmission losses between conventional insulation and light weight insulation were compared with SEA. Transmission loss measurement was performed to validate each prediction result, and it showed good correlation between prediction and measurement. Finally interior noise prediction was performed and result showed light weight insulation system can reduce 40% weight to keep similar performance with conventional insulation system, even though light weigh insulation system has lower sound transmission loss and higher absorption coefficient than conventional system.

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Prediction of Weight Losses and Quality Changes in Long Storage of Apples (사과 장기(長期) 저장(貯藏)에 있어서 중량감소(重量減少)와 품질변화(品質變化)의 예측(豫測))

  • Koh, Ha-Young;Park, Mu-Hyun;Shin, Dong-Hwa;Min, Byong-Young
    • Applied Biological Chemistry
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    • v.27 no.3
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    • pp.146-150
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    • 1984
  • Changes of weight loss and quality in 3 different apple cultivars and four storage conditions were investigated for 6 month storage. Weight loss changes in the pilot scale low temperature storage $(^{\circ}C)$ could be predicted with linear equations. Quality defects were remarkably increased at 5% of weight loss in all cultivars and storage conditions. It was possible to predict by linear equations the quality of apples by measuring acidity and texture highly correlated to the sensory scores.

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Manufacture and Properties of Gypsum-Wood (Gypsum-Wood의 제조와 성질)

  • Lee, Jong-Shin;Kim, Soung-Joon
    • Journal of the Korea Furniture Society
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    • v.19 no.1
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    • pp.83-90
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    • 2008
  • Gypsum-wood composites were made by introducing inorganic substances into wood using calcium chloride, first treating solution, and sodium sulfate, secondary treating solution, by double diffusion process under atmospheric pressure at room temperature. The process conducted as follows: water saturated specimens were soaked in calcium chloride solutions at several concentration. Then the specimens were soaked further in saturated sodium sulfate solution, and they were leached in flowing tap water for 24h. To attain sufficient weight percent gain (WPG) values, the suitable concentration of calcium chloride and soaking time in saturated sodium sulfate solution were 20% and 48h, respectively. Inorganic substances were produced mainly in the lumina of tracheides. It was made sure that these substances were dihydrate gypsum($CaSO_4$ $2H_2O$) by X -ray microanalysis (SEM-EDX). The composites had good fire resistance due to low heat transfer rate of gypsum formed in wood. However, the composites had little decay resistances, because they showed high weight losses by test fungi attacks.

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Total Waste Water at Rice Washing for Rice Cooking, its Composition and Cost Analysis (취반시 쌀씻는 물의 양과 발생한 뜨물의 구성 및 처리비용분석)

  • Shin, Dong-Hwa
    • Journal of the Korean Society of Food Culture
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    • v.12 no.4
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    • pp.419-421
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    • 1997
  • Washing water volume of rice for cooking and rice weight for one person per meal in one household were surveyed for confirming pollution by the washing water and total losses by rice washing procedures. The mean size of a family was 4.64 persons and the mean consumption weight of rice per capital per meal was 138.43g. It is used 0.782 L of water for washing the rice per capital share. The washing water of rice was composed of 0.32% of total solid, 0.11% of soluble solid and 1.65% of solid loss to rice, and COD and BOD of it were 2.400 and 3.564 ppm respectively. Based on total population in Korea, 41 miliion, excepting age below 4, total cost for washing water of rice summed up about 1,495 billion won including 8.8 billion won for tap water cost, 11.7 billion won for waste water treatment, and 129 billion for solid loss of rice.

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