• Design & Manufacturing
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• v.7 no.1
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• pp.50-54
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• 2013

Sewage treatment plants are energy hogs. Among many, aeration systems account for 40-50 percent of the total energy use. To save energy, strengthening oxygen transfer characteristics is necessary. In order to do so, microscopic bubble-creating equipment is a prerequisite. This study focuses on microscopic bubble-producing air diffuser manufacture to save energy and enhance oxygen transfer.

• Korean Journal of Pharmacognosy
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• v.37 no.3
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• pp.196-199
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• 2006

'An Che Whan(安滯九)' is a Chinese patent medicine which has been used for gastric ulcer and digestive disorder in Korea. It consists of 15 kinds of powdered crude drugs. In powdered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, a microscopic method may be used conveniently as it requires only a small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective fer the identification of the 15 crude drug ingredients in An Che Whan.

• Korean Journal of Pharmacognosy
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• v.39 no.3
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• pp.203-207
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• 2008

Man Kyung Dan(萬經丹) is a Chinese patent medicine which has been used for rheumatic neuralgia, apoplexy, extremitas neurolepsis in Korea. It consists of 16 kinds of powdered crude drugs. In powered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used, as it requires only small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 16 crude drug ingredients in Man kyung Dan.

• Applied Microscopy
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• v.34 no.4
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• pp.271-276
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• 2004

The genus of Biscogniauxia, well known wood degrading fungi, is a member of the Xylariales, which has woody to carbonaceous, brown to dark brown stromata. Daldinia concentrica and Biscogniauxia sp. isolated from heavily decayed hardwood, are precisely described under light microscopic and scanning electron microscopic level. Daldinia concentrica will be the first ultrastructural description in Korea. The unidentified species collected, having small size of ascospores $11.4\;15.6{\times}9.6\;12.0{\mu}m$ with full germ slit, are taxono-mically compared with similar species found in Korea.

• Journal of the Korean Wood Science and Technology
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• v.33 no.5 s.133
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• pp.7-12
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• 2005

The objective of this study is to estimate the mechanical behavior in bending and the anatomical changes of wood under several deflection rates. Sample specimens of water-saturated Japanese cedar (Cryptomeria japonica) were stressed to rupture under several deflection rates. Mechanical properties of wood such as modulus of elasticity, modulus of rupture and stress at proportional limit, and anatomical changes affected by deflection rates were estimated. Microscopic observations on compression side of the test specimens when the specimen was loaded to rupture were carried out by the SEM (scanning electron microscopy). The results are summarized as follows: 1. The mechanical properties of wood were affected by variations of the deflection rates. The modulus of elasticity (MOE), modulus of rupture (MOR) and stress at proportional limit were in proportion to the logarithm of deflection rates. 2. The deflection of wood at rupture in bending increased as deflection rates decreased. 3. The variations of the microscopic deformations of sample specimens were closely related to the deflection of wood at rupture. In case of largely deflected wood by maximum bending load, severe and abundant microscopic deformations were observed.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.01a
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• pp.303-306
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• 2009

Registration of microscopic section images from an organism is of importance in analyzing and understanding the function of an organism. Microscopes usually suffer from the radial distortion due to the spherical aberration. In this paper, a correction scheme for the intra-section registration is proposed. The correction scheme uses two corresponding feature points under the radial distortion model. Proposing several variations of the proposed scheme, we extensively conducted experiments for real microscopic images. Iterative versions of the correction from multiple feature points provide good performance for the registration of the optical and scanning electron microscopic images.

• Korean Journal of Pharmacognosy
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• v.36 no.4 s.143
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• pp.278-281
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• 2005

'Hwan So Dan(還少丹)' is Chinese patent medicine which has been used for shortage of vitality and asthenia in Korea. It consists of 14 kinds of powdered crude drugs. In powdered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used as it requires only a small amount specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 14 crude drug ingredients in Hwan So Dan.

• Korean Journal of Pharmacognosy
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• v.37 no.1 s.144
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• pp.11-15
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• 2006

Hwan Myeong Hwan (環明丸) is Chinese patent medicine which is used for presbyopia and eye disease. It consists of 23 kind of powdered crude drugs. In powered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used as it requires only a small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 23 crude drug ingredients in Hwan Myeong Hwan.

• Korean Journal of Pharmacognosy
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• v.28 no.2
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• pp.84-87
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• 1997

Cheon Hai Whan is a Chinese Patent medicine, Which is used for couch remedy in Korea. This medicine consists of 17 powdered crude drugs. The microscopic method is very useful to identify individual gradients in powdery mixture because it requires only a small amount of specimens. In this study, It is demonstrated that the microscopic method is very effective for the identification of 17 crude drug ingredients contained in Cheon Hal Whan.

• Korean Journal of Pharmacognosy
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• v.39 no.1
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• pp.43-49
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• 2008

Dae Jeong Hwan (大精丸) is a Chinese patent medicine which has been used for improvement of lassitude, anorexia, and enervation in Korea. It consists of 24 kinds of powdered crude drugs. In powered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used, as it requires only small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 24 crude drug ingredients in Dae Jeong Hwan.