• Childhood Kidney Diseases
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• v.13 no.2
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• pp.197-206
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• 2009

Purpose : Limited information is available on experiences of intravenous iron treatment in children. In this study, iron sucrose was administered intravenously to determine its effect, the factors predicting outcome, and safety in children on chronic dialysis. Methods : Twenty-one children whose serum ferritin levels were less than 100 ng/mL or transferrin saturations (TSAT) were less than 20% were enrolled. In 12 children on peritoneal dialysis (PD), the drug was infused intravenously as 200 mg/$m^2$ ($\leq$200 mg) at week 0, 2, 4, and 6. In 9 children on hemodialysis (HD), it was given intravenously as 8 weekly doses of 3 mg/kg ($\leq$100 mg) through week 0-7. Results : After treatment, serum ferritin levels increased significantly in both groups, and TSAT rose significantly in PD group. However, hemoglobin level did not rise significantly in both groups. Children with baseline hemoglobin less than 10 g/dL or baseline TSAT less than 20% showed significantly higher rise of hemoglobin after intravenous iron treatment. To the contrary, those with higher baseline hemoglobin and TSAT levels displayed higher rise in serum ferritin after the treatment. Although no serious adverse event occurred, TSAT levels exceeding 50% were noted in 6 patients in PD group. Conclusion : This suggests that 3 mg/kg/week of intravenous iron sucrose can be used safely in children on chronic HD, but 200 mg/$m^2$ every other week may incur excessive TSAT level in some patients on chronic PD.

• Economic and Environmental Geology
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• v.57 no.2
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• pp.263-270
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• 2024

In this study, impact factors for dehydration with KOMIR-Tube system using flocculant and dewatering tube were evaluated for mine drainage sludges. The experiments were conducted on semi-active facility sludges with water contents above 90 % using KOMIR-Tube system. The flocculant and input amount were determined from laboratory experiment and the dewatering efficiency was verified onsite experiment. The sludge characteristics were identified by instrumental analysis such as zeta potential measurement, particle size analysis, XRD, XRF and SEM-EDS. Selection of flocculants for sludge dewatering treatment need to consider not only precipitated rate but also filterated rate. Floc size has to keep at least 0.7 mm. From on-site experiments, sludge dewatering using KOMIR-Tube system suggests to carry out April and May that is low rainfall and humidity considering to climate conditions. Also, dewatering rate depends on the crystal degree of mineral that mainly makes up sludges. Particularly, goethite of the iron hydroxides has better dewatering rate than ferrihydrite. Ferrihydrite is low degree of crystallinity and uncleared or broad shaped crystal, goethite is good crystallinity with needle shaped crystal so that the effect of flocculation and dewatering showed to depend on the crystal. In results, impact factors of dewatering for mine drainage sludges are related to flocculant, climate, crystallinity and shape of iron hydroxides.

• Journal of the Korean Chemical Society
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• v.42 no.5
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• pp.565-569
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• 1998

• YAKHAK HOEJI
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• v.40 no.4
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• pp.375-381
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• 1996

Five crystal modification of droperidol were prepared by recrystallization. They were characterized by UV spectrophotometer, DSC, and X-ray crystallography. Their dissolution pa tterns were also investigated. After storage of 2 months at 100% humidity, all polymorphic modifications were transformed.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.04a
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• pp.172-173
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• 2009

• Proceedings of the IEEK Conference
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• 2003.07e
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• pp.1996-1999
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• 2003

Stereo matching is an important technique in the are of computer vision. There are already many theorems to find disparity map using stereo images. Usually, disparity is searched by using block matching. However block matching result in blocking effects caused by using fixed size window for computing pixel correlations. This paper suggests an efficient method to remove the blocking effect in stereo matching procedures.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2000.09a
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• pp.24-29
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• 2000

1883년 인도네시아 순다해협의 크라카토아 화산폭발에 의한 쓰나미 는 30m가 넘는 파도와 36,000명이 넘는 사상자가 보고되었다. 이 쓰나미 는 호주서측을 통해 남극주위를 전파하여 남대서양의 남조지아 제도, 태평양의 하와이 및 San Francisco항의 해안과 파나마의 Colon까지 파급되었다. (중략)

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2000.09a
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• pp.47-54
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• 2000

역사적으로 동해에서의 쓰나미는 자주 발생하지는 않았지만, 동해에서의 지진 진앙지가 유라시아와 북태평양 플레이트사이인 일본연안을 따라 위치하고 있어서 우리나라의 동해 연 안, 일본연안 및 러시아 연안에 큰 쓰나미에 의한 피해를 줄 수 있다. (중략)

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.129-142
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• 2002

중국횡단철도(TCR)와 한반도의 연결ㆍ중국횡단철도는 중국 쟝쑤성 렌윈강에서 신장 위그루 자체구의 아라샨커우까지 4,131km의 철로이며 중국의 동부, 중부, 서부의 10개성을 동서방향으로 횡단하는 중국 제1의 동서횡단철로임 ㆍTCR을 이용하면 중국에서 유럽까지의 거리가 시베리아횡단철도(TSR)보다 약 1,500km 짧으며 카자흐스탄, 우즈베키스탄 등 중앙아시아와 이란, 아프가니스탄 등 서아시아까지의 거리는 TSR보다 3,000km이상 짧음(중략)

• YAKHAK HOEJI
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• v.29 no.5
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• pp.253-259
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• 1985

In order to search a more active and safer compound, piperine derivatives with substituents in piperidine residue were synthesized and evaluated on CNS depressant activity. N-Piperoyl-2-methylpiperidine (I) and N-piperoyl-3-methylpiperidine (II) were potent in strychnine-induced convulsion. Compound I and N-piperoyl-3-hydroxypiperidine (IX) exhibited a potent inhibitory effect againt pentetrazoleinduced convulsion and a significant prolongation effect of hexobarbital-induced sleeping time. The hydroxy derivatives were more toxic than the methyl derivatives.