• 한국식생활문화학회지
• /
• 제11권1호
• /
• pp.1-5
• /
• 1996

국내 주요지역에서 생산되는 곶감 및 표면 백색분말의 당조성과 분말의 형태를 주사전자현미경으로 관찰하였다. 곶감과육의 당함량은 $56{\sim}59%$ 정도였으며 주로 glucose와 fructose로 이루어져 있었다. 백색분말은 당 84.6%, 수분 12.5% 및 불용성 물질이 2.7% 정도였으며 당조성에 있어서는 glucose가 83.3%를, fructose가 16.7%로 대부분이 glucose였다. 백색분말을 주사전자현미경으로 관찰한 결과 판, 꽃, 침 및 뿔등의 형태를 이루고 있었으며 수화후 재결정화한 glucose와 비슷한 형태를 나타내었다. 곶감 표면의 백색분말은 건조과정중 과육내부의 당이 수분의 이동과 함께 건조표면으로 이동하여 건조가 진행됨에 따라 주로 glucose가 결정화된 것으로 보여진다.

• 한국치위생학회지
• /
• 제7권2호
• /
• pp.189-196
• /
• 2007

A study of the J health college dept of dental hygiene practice vistant a total of 35 supragingival calculus and subgingival calculus picking SEM observation and bacteria identification of the result are followings. 1. As observed by dental calculus SEM, the surface roughness appeared as peaks, valleys, and pits. 2. About bacteteria morphology blood agar plate small green zone partial hemolysis colony streptococcus observation 3. Isolated colony gram stain gram are positive display 4. Supragingival calculus at Lactococcus lactis spp. Leuconostoc spp. Streptococcus mitis, Aerococcus viridans bacteria 1, 3, 3, 16 species detection 5. Subgingival calculus at Aerococcus viridans, Leuconostoc spp. bacteria 5, 1 species detection.

• 한국가축번식학회지
• /
• 제16권3호
• /
• pp.247-260
• /
• 1992

This study was carried out to investigate the histomorphological changes of ovaries obtained from 100 of 1-year-old female Korean loach(misgurnus anguillicaudatus). The light microscopic and ultrastructural changes ofooplasm and follicular membranes of oocytes, were observed by lightand transmission electron microscope during the reproductive cycle. All data were collected from November in 1991 to May in 1992. The results obtained in this study were as follows: The size of the nucleoli and number of the yolk granules increased as the oocytes grown. Yolk granules were loosely deposited in the oocytes as crystalline granules. Due to the presence of large early and late maturing oocytes, their ovaries were enlarged, transparent, granular and yellowish in color. The lattice was broken down at hydration, leaving the egg transparent. As the percentages of fish in LMO and RO stage increased from March to April, mean gonadosomatic index(GSI) values(18.49%) increased. Zona radiata change a squamous into cuboid shape in EMO stage. Processes from the granulosa cells and from the oocyte, microvilli grow and make contact with other in the pore canals of the zona radiata during vitellogenesis, but are withdrawn as the zona radiata becomes more compact and devoid of pore canals during oocyte maturation. Seasonal changes in the microscopic appearance of the ovaries were well correlated with those in both GSI and macroscopic appearance.

• Radiation Oncology Journal
• /
• 제7권2호
• /
• pp.157-169
• /
• 1989

Radiological and clinical evidences indicate that hyperthermia combined with irradiation produce a significant improvement in therapeutic effect of cancer The experiences obtained from 90 rats' kidney A single dose of irradiation ranged from 6Gy, 8Gy and 10Gy was delivered on the rat's kidney. The combined therapy group had the same irradiation after hyperthermia at $42\~44^{\circ}C$ for 30 minutes. Microscopic examination and calculation of thermal enhancement ratio were carried out, and the results were as follows: 1. In the group of hyperthermia alone, there were moderate glomerular congestion and mild tubular degeneration on light microscopic examination. 2. In the group of irradiation alone, tubular degeneration was noted in 6Gy irradiation and its severity was increased along with radiation dose. 3. In the group of hyperthermia combined with irradiation, tubular degeneration and necrosis were appeared in 6Gy and 10Gy irradiation, respectively. 4. On electron microscopic examination, proximal convoluted tubular and glomerular changes in irradiation group were similar to that of combined with hyperthermia, and its severity was increased along with observation periods. 5. Thermal enhancement ratio (TER) was 1.0 after evaluation of histipathologic changes in rat's kidney, with combination therapy.

• 대한본초학회지
• /
• 제22권2호
• /
• pp.115-119
• /
• 2007

Objectives : A morphological classification among Sophora tonkinensis, Menispermum dauricum and Indigofera kirilowii was made through microscopic observation. Method : The slice of the tested material made by paraffin section technique was colored with Safranine Malachite Green contrast methods, and then observed and photographed by olymphus-BHT. Result : 1. The cross-sections of Sophora tonkinensis and Indigofera kirilowii have piths, but Menispermum dauricum does not have any. 2. The lateral parts of Sophora tonkinensis cortex include the square crystal of calcium oxalate, but Indigofera kirilowii does not. Conclusion : The number of piths and the presence of the square crystal of calcium oxalate can be used to distinguished Sophora tonkinensis from Indigofera kirilowii.

• Journal of Welding and Joining
• /
• 제10권1호
• /
• pp.20-34
• /
• 1992

Characteristics of two correcting methods, a new Autogeneous GTAW heating (TIG) method and the conventional GMAW bead-on plate welding(MIG) method, for distorted aluminum fabrication structures were studied. As a result of microscopic study of Autogeneous GTAW heating and GMAW bead-on plate welding areas, porosities in weld metal and surface cracks in local heating zone were found. Through the mechanical tests, it was verified that porosities decrease tensile strength and surface of distortion, angular displacement and transeverse shrinkage were measures and compared. In order to investigate changes of material properties in heating area and cause of defects such thermal stresses were calculated by ADINA. Through the computations of transient thermal stresses and microscopic observation of fracture surface, thermal stress was found to be the cause of crack during Autogeneous GTAW heating.

• 대한본초학회지
• /
• 제21권4호
• /
• pp.171-176
• /
• 2006

Objectives : A morphological classification among Rheum palmatum Linne, Rheum undulatum Linne and Rumex crispus was made through microscopic observation. Methods : The slice of the tested material made by paraffin section technique was colored with Safranine Malachite Green contrast methods, and then observed and photographed by olymphus-BHT. Results: 1. Stellate spots were found on the intersection of Rheum palmatum, composed of heteromorphy vascular bundles. 2. Stellate sponts were not found in Rheum undulatum and Rumex crispus, because they do not have heteromorphy vascular bundles. Conclusion : Rheum palmatum can be distinguished with Rheum undulatum and Rumex crispus, based on the presence of Stellate spots on its intersection.

• 한국공작기계학회논문집
• /
• 제11권1호
• /
• pp.26-31
• /
• 2002

In this study an experimental investigation was conducted to find the grinding characteristics of ceramics, STD11 and STS304 materials. The grinding force and the microscopic observation of the workpieces were obtained in surface grinding. Grinding characteristics of ceramics were inspected through the microscopic examination the cutting force, and the surface roughness. It has been found that the finding force of ceramics is relatively low as compared to that of steels and that CBN wheel has an excellent performance. The surface roughness was measured according to the feedrate and the depth of out.

• 생약학회지
• /
• 제43권4호
• /
• pp.268-273
• /
• 2012

Acanthopanax species are well known medicinal plants in Korea for their adaptogenic efficacy. Regarding to the botanical classification of Acanthopanax koreanum, an indigenous species in Jeju island of Korea, it has been classified as different species of Acanthopanax genus. However, the morphological characteristics of A. koreanum are very similar with other Acanthopanax species, especially with A. gracilistylus. In order to provide further classification information among these botanically related species, microscopic and morphological studies on these Acanthopanax species were performed. In this result, it has been found that A. koreanum is similar to A. gracilistylus in terms of anatomical observation and was distinguished from A. sieboldianus by their morphological and anatomical differences.

• 한국윤활학회:학술대회논문집
• /
• 한국윤활학회 2000년도 제32회 추계학술대회 정기총회
• /
• pp.318-331
• /
• 2000

Electrical and tribological behaviours of a copper-graphite brush in a slipring-brush assembly were investigated to evaluate the characteristics of electric signal transmission between a slipring and a brush. Five brush materials containing different amounts of copper and graphite were studied. The result showed that a copper-graphite brush at a particular graphite content exhibited the most stable frictional and electrical behaviour suggesting an optimum amount of a solid lubricant in a metal-graphite brush system. Microscopic observation and the surface analysis showed good agreements with this phenomena. In addition, the deviation of the friction coefficient and electric signal distortion has a close relationship with a microscopic mechanical vibration and the change of a real contact area.