• Journal of Korean Physical Therapy Science
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• v.19 no.2
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• pp.63-71
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• 2012

Purpose : This study aimed to acquire a basic knowledge about lumbar stability and inquire into exercise approach of pressure biofeedback unit for lumbar stability. Methods : This study was composed with reviewed theory of lumbar stability and several books and articles for exercise using pressure biofeedback unit. Results : The stability of lumbar should work symmetrical with passive, active, control subsystem in neutral zone, and local muscles should be using for stability. Especially, selective using of transverse abdominis work for lumbar stability importantly. The control of using pressure biofeedback unit may important not only examination but treatment. Conclusion : The stability of lumbar need co-contraction of specific local muscle and training for timing as well as using pressure biofeedback unit for accurate control may use for examination and therapedic approach.

• Journal of the Korean Society for Library and Information Science
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• v.10
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• pp.71-120
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• 1983

In this study, a model curriculum for the Library and Information Science programs in Junior Colleges is presented by comparing those curricula of the Republic of Korea, the United States of America, England and Japan. In Korea, 80 credits are required for graduate of Junior College and 60 credits of that total credits are for major courses. At Toshokan Danki Daikagu in Japan, 73 credits are opened for the Department of Library Science and 87 credits for the Department of Library and Information Science respectively. In the United States of America, 30 credits for major courses out of 90 total credits are opened at Lansing Community College and 24 credits for major courses out of 60-64 credits at Mesa Community College distinctively. On the basis of the various analyses, the following principles are applied in designning the model curriculum; (1) Possibly 3 credits per subject are assigned, (2) Major credits for graduate are 60-64 credits including possible optional subjects, (3) 20 percents of those 60-64 credits shall be applied for electives, so that 72-78 credits are assigned for major, (4) In order to combine theory and practice, and to select practice areas as required major, the ratio between required and elective must be adjusted, (5) In order to avoid duplication of subject, adequate individuality must be provided, (6) The Information Science areas must be dealt with in Library Science since computer systems are being rapidly adopted in libraries and the education for resources of materials and foreign languages are also important for successful fulfillment of mediator's roles between materials and users. Therefore the following model curriculum is suggested; 31 credits in 11 subjects for required major, 46 credits in 18 subjects for electives in major, total 77 credits for 29 subjects are established, and it includes such areas as material organization, foreign languages, resources of materials, library management, information science, fundamental studies, services and practice.

• The Bulletin of The Korean Astronomical Society
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• v.38 no.2
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• pp.48.1-48.1
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• 2013

We present galaxy luminosity functions (LFs) of subgroups in the Ursa Major cluster. The membership of galaxies is determined by radial velocities which are compiled from the SDSS and NED. We found that the faint end slope (${\alpha}$) of the LF of all sample galaxies in Ursa Major is ${\alpha}=-1.13$. This is consistent with previous result, but shallower than that of the Virgo cluster. Interestingly, the subgroups in Ursa Major show different slopes in their LFs. The NGC 3992 and NGC 4111, the massive subgroups in the Ursa Major cluster, exhibit steep slopes of their LFs comparable to that of the Virgo cluster. On the other hand, less massive group (NGC 3877) shows a very shallow slope of -0.84. Based on the results, we discuss the evolution of galaxies and the assembly history of the Ursa Major cluster.

• The Journal of Korean Physical Therapy
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• v.13 no.2
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• pp.433-444
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• 2001

This review highlights the ontogenesis and the differentiation of motor neuron in spinal cord, and introduce the survival motor neuron(SMN) which is associated with growth and survival of motor neurons. The differentiation of floor plate cells and motor neurons in the vertebrate neural tube appears to be induced by signals from the notochord. This signal is Sonic hedgehog(Shh). The early development of motor neurons involves the inductive action of Shh. The SMN gene is essential for embryonic viability. SMN mRNA is also expressed in virtually all cell types in spinal cord, including large motor neurons. The SMN protein is involved in RNA processing and during early embryonic development is necessary fer cell survival. Two SMN genes are present in 5q 13 in humans: the telomeric gene(SMNt), which is the SMA-determining gene, and the centromeric analog gene(SMNc). The majority of transcripts from the SMNt gene are full length but, major transcripts of the SMNc gene have a high degrees of alternative splicing and tend to have little or no exon 7. The SMN is involved in the RNA processing(the biogenesis of snRNPs and pre-mRNA splicing), the anti-apoptotic effects, and regulating gene expression.

• Journal of Animal Reproduction and Biotechnology
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• v.35 no.1
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• pp.42-49
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• 2020

As a preclinical study, many researchers have been attempted to convert the porcine PSCs into several differentiated cells with transplantation of the differentiated cells into the pigs. Here, we attempted to derive neuronal progenitor cells from pig embryonic germ cells (EGCs). As a result, neuronal progenitor cells could be derived directly from pig embryonic germ cells through the serum-free floating culture of EB-like aggregates (SFEB) method. Treating retinoic acid was more efficient for inducing neuronal lineages from EGCs rather than inhibiting SMAD signaling. The differentiated cells expressed neuronal markers such as PAX6, NESTIN, and SOX1 as determined by qRT-PCR and immunostaining. These data indicated that pig EGCs could provide valid models for human therapy. Finally, it is suggested that developing transgenic pig for disease models as well as differentiation methods will provide basic preclinical data for human regenerative medicine and lead to the success of stem cell therapy.

• Korean Journal of Remote Sensing
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• v.37 no.1
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• pp.153-160
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• 2021

Land Surface Temperature (LST) is the radiological surface temperature which observed by satellite. It is very important factor to estimate condition of the Earth such as Global warming and Heat island. For these reasons, many countries operate their own satellite to observe the Earth condition. South Korea has many landcovers such as forest, crop land, urban. Therefore, if we want to retrieve accurate LST, we would use high-resolution satellite data. In this study, we made LSTs with 4 LST retrieval algorithms which are used widely with Landsat-8 data which has 30 m spatial resolution. We retrieved LST using equations of Price, Becker et al. Prata, Coll et al. and they showed very similar spatial distribution. We validated 4 LSTs with Moderate resolution Imaging Spectroradiometer (MODIS) LST data to find the most suitable algorithm. As a result, every LST shows 2.160 ~ 3.387 K of RMSE. And LST by Prata algorithm show the lowest RMSE than others. With this validation result, we choose LST by Prata algorithm as the most suitable LST to South Korea.

• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.66.2-66
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• 1999

No Abstract, See Full Text

• Journal of Applied Biological Chemistry
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• v.62 no.1
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• pp.87-91
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• 2019

The contents of major ginsenosides (ginsenosides Rb1, ginsenoside Rc, ginsenoside Rd, ginsenoside Re, ginsenoside Rf, and ginsenoside Rg1) in ginseng cultivated in different areas in Korea, ginseng that underwent different cultivation processes and ages, and ginseng cultivated in different countries were determined using high-performance liquid chromatography equipped with UV/VIS detector. Ginsenoside Rc was the most abundant ginsenoside in all different ginseng samples. The highest total concentration of major ginsenosides was found in the ginseng cultivated in Jinan (0.931 mg/g) and 4-year grown red ginseng (1.785 mg/g). Major ginsenosides were the most abundant in Korean ginseng (1.264 mg/g), compared to those in Chinese and American ginseng. The results of this study showed the different contents of major ginsenosides in the ginseng samples tested and emphasized which sample could contain high yield of ginsenosides.

• Proceedings of the Plant Resources Society of Korea Conference
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• v.18 no.1
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• pp.108-109
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• 2005

• Proceedings of the Plant Resources Society of Korea Conference
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• 2005.11a
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• pp.75-75
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• 2005