• Proceedings of the KSME Conference
• /
• 2007.05a
• /
• pp.102-107
• /
• 2007

The steel impeller placed in a water pump has been studied with the aim to understand corrosion phenomena on the surface responsible for reducing the pumping efficiency of water inside cooling system. This preliminary experiment includes a period (around 1 month) observation with a powered microscope and weight measurements. The experiments are carried out at different conditions of water and mixtures of water and coolants, based on the water contents of 25%, 50%, 75%, and 100% water (pure tap water). From the visual results of microscopy, most of the steel surface is fitted and clear rusty or corrosion phenomena are noticeable as time goes. In addition, the weight loss of the sample specimen submerged in the water is linearly increased, whereas those in the mixtures of water initially gain weight and become almost constant.

• Journal of Yeungnam Medical Science
• /
• v.1 no.1
• /
• pp.129-134
• /
• 1984

The authors report a case of massive spontaneous intracerebral hematoma in a infant, caused by bleeding from cryptic vascular malformation associated with vitamin K dependant factor deficiency. The bleeding was initiated by vitamin K dependant factor deficiency, then 3 weeks later hematoma was expanded by rebleeding from malformed vessel after PT and PTT had been returned to normal values. The well circumscribed organized old hematoma with fresh expanded bleeding component within a huge rusty colored cystic fluid cavity was recognized in operative field and pathological ground.

• Proceedings of the KOR-BRONCHOESO Conference
• /
• 1982.05a
• /
• pp.7.1-7
• /
• 1982

We have recently experienced three interesting foreign bodies in the air way. Case 1. A spring coil of ball pen which was rusty and divided into two for one year was in the right inferior lobar bronchus of a 10 year old boy. Case 2. A bean lodged on the orifice of the right upper lobar bronchus and right middle lobar bronchus, resulted in complete atelectasis of the right upper and middle lobes of a 6 month old girl. Cases 3. A wire used in fixing a pair of socks was hanged transeversely for one month between epiglottis and hypopharynx of a 11 month old boy.

• Journal of Power System Engineering
• /
• v.13 no.1
• /
• pp.46-52
• /
• 2009

The steel impeller placed in a water pump has been studied with the aim to understand corrosion phenomena on the surface responsible for reducing the pumping efficiency of water inside cooling system. This preliminary experiment includes a period (over 5 months) observation with a powered microscope and weight measurements. The experiments are carried out at different conditions of water and mixtures of water and coolants, based on the water contents of 25%, 50%, 75%, and 100% water (pure tap water). From the visual results of microscopy, most of the steel surface is fitted and clear rusty or corrosion phenomena are noticeable as time goes. In addition, the weight loss of the sample specimen submerged in the water is linearly increased, whereas those in the mixtures of water initially be constant and then gain weight linearly.

• Proceedings of the Korean Society of Agricultural Engineers Conference
• /
• 2005.10a
• /
• pp.175-180
• /
• 2005

Experiments on the improvement in durability of pipe framework for plastic greenhouse were carried out. Effect of protection treatment such as primer and paint coating for new pipes and old rusted ones were evaluated by change of rusty degree and yield strength. The experiments have been conducted during five years until now but it was too short to find the clear differences. However, there was a little improvement in durability of greenhouse pipes by painting after removal of rust. And also component and corrosion characteristics of pipes being used in greenhouses were analyzed, and several countermeasures for protection from corrosion were reviewed.

• Journal of Haehwa Medicine
• /
• v.9 no.1
• /
• pp.409-421
• /
• 2000

According to The Comparative study on the IgA Nephropathy and hematuria, the results were as follows. 1. IgA nephropathy is included in category of the hematuria the part in deficiency of liver-kidney and damp-heat in oriental medicine. 2. The symptoms of hematuia is changes in color of urine-bloody, dark brown, or rusty colored-without pain in oriental medicine. 3. It is occured IgA nephropathy due to vacuity exhaustion, fidgetiness, internal damage, imfection. 4. For the medical prescriptions due to IgA nephropathy are used Sogyeeumja, $Dayebunch\check{o}ngeum$(大分淸飮), Dangguieum(當歸飮), $Ch\check{o}ngjangtang$(淸腸湯), Silyungtang(柴岺湯), Kamisagunjatang(加味四君子湯) as hematuria of symtom of IgA nephropathy.

• Journal of Ginseng Research
• /
• v.14 no.1
• /
• pp.63-66
• /
• 1990

The development of cracking in ginseng roots was studied to elucidate the factors affecting it in the field. The cracking of 6-year-old ginseng roots harvested in late October callld be induced in 2 days after soaking in water or in watersatllrated soil. However, it callld be slowed down by approximately 10 days when the roots were kept at a low temperature(5$^{\circ}C$). Roots excavated in late May did not develop cracking tinder the conditions tested. There was no significant difference between rice-straw shade and P.E. net shade in the rate of cracked ginseng roots. Which varied with ginseng varieties in relation to shade material. The rate of cracked roots was about 40% in 6-year plants, but it was extremely high (55.6%) in rusty roots. Healing of the wound formed by cracking was generally low but varied between harvest years.

• Proceedings of the Korean Society of Plant Pathology Conference
• /
• 2003.10a
• /
• pp.98.2-99
• /
• 2003

Bacterial canker of sweet cherry (Prunus cerasus L.) was observed in farmers' orchard in Goesan, Chungbuk in 2003. Typical canker symptom occurred on the branches or twigs of sweet cherry in early spring and bacterial exudates oozed out of the cracked barks of diseased trees. Watersoaked brown symptom appeared on the leaves and severe infection caused thorough defoliation on the branches or twigs of sweet cherry. When cut the severely infected branches or twigs, irregular and rusty-colored symptoms in sapwood and heartwood were clearly found, indicating that they could serve as specific symptoms of bacterial canker of sweet cherry. The gram negative, aerobic bacterium isolated from the lesion produced fluorescent pigments on King's B agar medium but did not grow at 37$^{\circ}C$ The bacterium formed Levan-type colonies, and showed negative reactions in oxidase reaction, arginine dihydrolysis test, and pectolytic activity Based on the biochemical and pathological characteristics, the causal organism was identified as Pseudomonas syringae pv. morsprunorum. This is the first report on bacterial canker of sweet cherry in Korea.

• Research in Plant Disease
• /
• v.8 no.3
• /
• pp.179-183
• /
• 2002

to investigate occurrence of kiwifruit bacterial canker disease,172 kiwifmit orchards in Jeonnam and Gyeong-nam provinces were surveyed from March to April in 1999. In the south coast region of Korea, such as Haenam, Wando, Jindo, Jangheung, and Bosuns, red-rusty brown bacterial oozes were observed in 17 kiwifvuit orchards. Disease incidences varied from 2.2% to 100% depending on various regions. Total 22.8 ha of kiwifruit orchards were destroyed by occurrence backerial canker at 1999 in Korea. Orchard in Wando, Jindo, and Goheng were severely damaged in 1999. The seasonal variation of bacterial canker incidence was also investigated from 1996 to 1997 on leaves, vines and twigs of kiwifruit. Red-rusty brown bacterial ooze was exuded from mid February or early March to late April in creaked site of vine and twig. The seasonal incidence of bacterial canker on leaves appeared from late April to late June, and rapidly increased during May, Optimum growth temperature of Pseudomonas sytingae pv. actinidiae was at $25^{\circ}C$ on King's B medium and did not grow at 33$^{\circ}C$. We suggest that spreading of bacterial canker was suppressed under the plastic flim and windbreak net house.

• Korean Journal of Medicinal Crop Science
• /
• v.21 no.2
• /
• pp.118-123
• /
• 2013

This study was carried out to select optimal shade materials among four-layered polyethylene (PE) net (FLPN), aluminium-coated PE sheet (APSS), and blue PE sheet (BPSS) in condition of paddy field cultivated 6-year-old ginseng. The order of light-penetrated ratio and air temperature by shade materials was BPSS > APSS > FLPN. Light-penetrated ratio of BPSS before two fold shade was more 3 times and 2 times than that of FLPN and APSS, respectively. Air temperature of BPSS was also higher $1.6^{\circ}C$ and $1.4^{\circ}C$ than that of FLPN and APSS, respectively. BPSS showed good cultural environment because all of light-penetrated ratio and air temperature were become higher in spring and fall season but lower in summer season by additional shade with two-layered PE net. Survived-leaf ratio was highest in BPSS and lowest in FLPN causing a little water leak on a rainy day. Rusty-root ratio was also highest in FLPN because soil moisture content was increased by water leak. The order of root yield was BPSS > APSS > FLPN, and the cause of highest yield in BPSS was higher light-penetrated ratio during spring and fall season, higher survived-leaf ratio, and lower rusty-root ratio than that of APSS and FLPN. BPSS showed highest total ginsenoside content because of high light-penetrated ratio, blue light effect, and the difference in dry matter partitioning ratio such as low taproot ratio, and high lateral root ratio.