• Title/Summary/Keyword: Water Body

Search Result 3,924, Processing Time 0.026 seconds

The Rheological Properties of Castella on the Market (시판 카스테라의 점탄성 계수)

  • 정현숙
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.23 no.2
    • /
    • pp.298-302
    • /
    • 1994
  • This study is carried out in order to investigate to the physical property of Castella. The material is 19 kinds of Castella on the market in Kyushu area.As an result of the sensory evaluation for Castella, it could be classified into 3 types ; a) high grade, C) low grade, and B) midium grade.The results are summarized as follow. The water content of 3 type Castella was most 26-30% but Korea's was more lower . ΔE of A an dB type Castella was similiar , but A and C types was very different. in the Creep test, 3 types are all the 6-element Voigt model, consisting of Hookean body , Newtonian body and two sets of Voigt body. Eo of A type is 13-36% higher than other types. The parts of retardation strain of A type are 21-41% lower than B type, 8-13% higher than C type, respectively.

  • PDF

A study on the Motions of a ship with Liquid Cargo Tanks (화물창의 유체유동을 고려한 선체운동에 관한 연구)

  • 박명규;김순갑;김동준
    • Journal of the Korean Institute of Navigation
    • /
    • v.10 no.2
    • /
    • pp.139-155
    • /
    • 1986
  • In this paper the dynamic effects due to the free water motions in tanks upon the lateral motion of a floating body in regular waves are calculated, in order to obtain the relationship between a motion of a floating body and that of the free water in tanks. Under the assumption that the fluid is ideal and motion amplitudes are small, velocity potential of the fluid in tanks is calculated by the source distribution method and the hydrodynamic forces and moments are calculated by the integration of fluid pressures over the tank surface. Hydrodynamic effects of the fluid on the floating body are expressed in terms of added mass and coupling coefficient obtained from the integration. Computations are carried out for ship with seven wide center tanks and comparisons between the liquid cargo loading case and the rigid cargo loading case are shown.

  • PDF

The Added Mass and Damping for the Axial Rigid Body Motion of a Marine Propeller Rotating in a Uniform Flow (선박용 프로펠러의 종방향 강체운동에 대한 부가질량)

  • Kim, Young-Joong;Lee, Hyun-Yup;Lee, Chang-Sup
    • Journal of the Society of Naval Architects of Korea
    • /
    • v.45 no.3
    • /
    • pp.309-314
    • /
    • 2008
  • An experimental method to estimate the added mass of a marine propeller has been developed for the axial rigid body motion in still water, and the experiments have been carried out. The experimental result has been compared to the theoretical result by PRODAS based on the unsteady lifting surface theory. The experimental method developed in this research and the theoretical method by PRODAS have been validated by confirming good agreements between the experimental results and the theoretical ones. Also the comparison to the results by empirical formula has been made and discussed.

Unified Theory for the Radiation Problem of Multiple Slender Bodies

  • Kim, Yong-Hwan
    • Journal of Ship and Ocean Technology
    • /
    • v.7 no.2
    • /
    • pp.1-19
    • /
    • 2003
  • This paper introduces a unified theory for the radiation problem of adjacent multiple floating bodies. The particular case of interest is the multiple slender bodies that their centerlines are parallel. The infinite-and finite-depth unified theories for the single-body problem are extended to solve each sub-problem of multiple bodies. The present method is valid for deep water and moderate water depth, and applicable for individually floating bodies as well as multimaran-type vehicles. For the validation of the present method, the heave and pitch hydrodynamic coefficients for two adjacent ships are compared with the results of a three-dimensional method, and an excellent agreement is shown. The application includes the hydrodynamic coefficients and motion RAOs of four trimarans which have different longitudinal and transverse arrangements for sidehulls.

The Use of National Names for International Bodies of Water: Critical Perspective (공해(公海)에 대한 국가지명 사용: 비판적 관점)

  • 알렉산더B.머피
    • Journal of the Korean Geographical Society
    • /
    • v.34 no.5
    • /
    • pp.507-516
    • /
    • 1999
  • More than twenty-five major international bodies of water bear the names of particular nations or states. Many of these are not names are widely accepted, but considerable disagreement has developed in some cases. A systematic examination of the level of conflict over the use of national names for international bodies of water indicates that conflict is most likely to develop where shifting power relations among interested states produce concern about the hegemonic ambitions of the state after which the body of water is named. This is the case in the three situations where considerable contention exists over the use of a national name for an international body of water: the Persian Gulf/Arabian Sea, the Sea of Japan/East Sea, and the South China SealBien Dong. Cases evidencing little contention are those where either no state has a significant interest in the naming issue, or where the name that is attached to the body of water is that of a state that has not been a historic threat to others in the region. Naming international bodies of water after nations or states is potentially problematic because such appellations can connote ownership or control by a single people or political entity. An understanding of the controversies surrounding these place names requires consideration of the geopolitical context in which they are embedded.

  • PDF

A Study about Change of Body Weight and Body Composition during Early Puerperium (산욕 초기 산모의 체중 및 체성분 변화에 대한 연구)

  • Park, Jang-Kyung;Kim, Dong-Il
    • The Journal of Korean Obstetrics and Gynecology
    • /
    • v.23 no.4
    • /
    • pp.95-108
    • /
    • 2010
  • Purpose: This study was to investigate the correlation among body weight, body composition, delivery method, parity, weight gain during pregnancy and obesity before pregnancy of patients who received postpartum care in one oriental medicine hospital. Mothods: From September 1, 2009 to August 31, 2008, we included 34 postpartum patients who had body composition analysis when admission and discharge among 47 postpartum patients who were hospitalized and received postpartum care in $\bigcirc\bigcirc$ University $\bigcirc\bigcirc$ Hospital. We used SPSS 14.0 for window to test for statistical significance. Results: After postpartum care, body weight and BMI of mothers was significantly decreased and the weight loss was almost body water. Mothers who had cesarean section had relatively severe edema and mothers who had been overweight before pregnancy had high BMI, body fat and abdominal fat. After delivery, body fat percentage was increased highly and body weight retention lasted long in mothers who had gained over 12.5kg during pregnancy. Conclusion: Living habits including diet has a significant effect on weight change of mothers during early puerperium, therefore it is required to teach mothers about breast-feeding, diet, and exercise to help their weight return to normal.

Analysis of difference in body fluid composition and dietary intake between Korean adults with and without type 2 diabetes mellitus (한국성인의 제2형 당뇨병 유무에 따른 체액 조성 차이 및 영양소 섭취량 분석)

  • Yu-Gyeong Kim;Ha-Neul Choi ;Jung-Eun Yim
    • Journal of Nutrition and Health
    • /
    • v.56 no.4
    • /
    • pp.377-390
    • /
    • 2023
  • Purpose: Diabetes mellitus (DM) causes body fluid imbalance because of hyperglycemia, but there is a lack of research on the relationship between DM and body fluid imbalance in the Korean population. This study compared the differences in body fluid composition and dietary intake between individuals with type 2 DM (T2DM) and a normal control (NC) group without the disease. Methods: In this study, 36 subjects with T2DM and 21 without diabetes were divided into the T2DM and NC groups. The subjects were divided into four subgroups to assess differences in body fluid volume according to sex: men T2DM group (n = 24), men NC group (n = 9), women T2DM group (n = 12), and women NC group (n = 12). The body fluid composition was measured using bioelectrical impedance analysis, including intracellular water (ICW), extracellular water (ECW), total body water (TBW), ECW/ICW, and ECW/TBW. Nutrient intake was evaluated using their dietary records. Results: The results showed that the ECW/ICW and the ECW/TBW were significantly higher in the T2DM group compared to the NC group. Both men and women in the T2DM group showed significantly higher ECW/ICW and ECW/TBW than the respective NC group. The T2DM group had a higher carbohydrate, dietary fiber, vitamin A, vitamin C, sodium, and potassium intake per 1,000 kcal and lower total daily energy, fat, and cholesterol intake per 1,000 kcal than the NC group. Conclusion: These results suggest a positive association between T2DM and body fluid imbalance. This study can be used widely as basic data for the evaluation and diagnosis of diabetic complications in the future.

Single Oral Dose Toxicity Test of Water Extracts of Radix Araliae Cordatae in ICR Mice

  • Leem, Moon-Jeong;Ryu, Jei-Man;Ku, Sae-Kwang
    • Biomolecules & Therapeutics
    • /
    • v.15 no.2
    • /
    • pp.127-132
    • /
    • 2007
  • The object of this study was to evaluate the acute toxicity of lyophilized water extract of Radix Araliae Cordatae (RA) in male and female mice. The extract was administered to female and male ICR mice as an oral dose of 2000 mg/kg (body wt.) according to the recommendation of KFDA Guidelines. Animals were monitored for the mortality and changes in body weight, clinical signs and gross observation during 14 days after dosing, upon necropsy, organ weight and histopathology of 12 principle organs were examined. As results, we could not find any mortality, clinical signs, changes in the body weight and gross findings except for increases of hypertrophy of lymph nodes in male RA extracts-dosing group. In addition, no RA extracts-treatment related abnormal changes in the organ weight and histopathology of principle organs except for some sporadic accidental findings. The results obtained in this study suggest that the RA extracts does not cause any toxicological signs. The LD$_{50}$ and approximate LD of RA extracts in both female and male mice were considered as over 2000 mg/kg.

Relationship between Clearance Rates and Metal Uptake Rates of Corbicula fluminea, Potamocorbula amurensis and Macoma balthica: Influence of Water Temperature and Body Size (세 종의 이매패류 Corbicula fluminea, Potamocorbula amurensis, Macoma balthica의 여수율과 금속 흡수율과의 관계에 대한 연구)

  • Lee, Jung-Suk;Lee, Byeong-Gwon
    • The Korean Journal of Malacology
    • /
    • v.21 no.1
    • /
    • pp.41-46
    • /
    • 2005
  • A series of radiotracer studies were conducted to evaluate the influence of water temperature and/or body size on the clearance rates and uptake rates of Cd, Se and Zn in the Asiatic clam, Corbicula fluminea, Asian clam Potamocorbula amurensis and Balthic clam, Macoma balthica. Uptake rates of Cd, Se and Zn were estimated simultaneously with clearance rate of clams under 3 different water temperature conditions (5, 13 and $21^{\circ}C$). The weight specific clearance and metal uptake rates of P. amurensiswere increased with temperature, however, no consistent temperature effect was observed for the other clams. The variation of uptake rates of Cd, Se and Zn along with temperature or body size in each clam species was well associated with clearance rates. The inter-species as well as the intra-species difference of metal uptake rates could be well explained by the variation of clearance rates of clam individuals.

  • PDF

Enhanced anti-inflammatory activity of curcumin, a naturally occurring pigment in turmeric via cyclodextrin complexation

  • Kohli, K;Ali, J;Najmi, AK;Anwer, MT;Ansari, MJ
    • Advances in Traditional Medicine
    • /
    • v.7 no.2
    • /
    • pp.121-127
    • /
    • 2007
  • Curcumin, a dietary pigment responsible for the yellow color of curry, has been used for the treatment of inflammatory diseases and exhibits a variety of pharmacological effects such as anti- inflammatory, anti-tumor, anti-oxidant, and anti-viral activity. In order to examine the potency of the curcumin in inflammation we used carrageenan induced rat hind paw odema model. As curcumin is practically water insoluble, it is hypothesized that pharmacological activity of curcumin could be improved by enhancing its water solubility. Water soluble complexes of curcumin with cyclodextrins were prepared and screened for greater solubility. Pure curcumin 100 mg/kg body weight along with curcumin complexes equivalent to 100 mg/kg body weight of pure curcumin were tested for the anti-inflammatory activity in Wister rats male rats using carrageenan induced hind paw edema model and compared with that of the reference compound diclofenac sodium at a dose level of 10 mg/kg body weight. Results were statistically analyzed using ANOVA. All the treatment groups showed statistically significant anti-inflammatory activity compared with that of vehicle control and positive control.