• The Korean Journal of Pain
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• v.11 no.2
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• pp.314-316
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• 1998

Psoas compartment block has been used to provide anesthesia and analgesia of hip joint. This block is advocated for relief of pain of various origins in the thigh, leg and lumbar area. A-40-year-old women complained of pain in the left thigh and lumbar area after operation of the second lumbar vertebral compression fracture. To relieve pain, caudal block was performed. This block reduced in lumbar pain but left thigh pain persisted. So, we were performed psoas compartment block using mepivacaine and dexamethasone, which relieved the pain in the left thigh and lumbar area. We recommend psoas compartment block as useful and simple method for patients with thigh and lumbar area pain, especially when the epidural block is not feasible.

• Journal of Astronomy and Space Sciences
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• v.24 no.1
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• pp.45-54
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• 2007

The relationship between the Galactic magnetic field strength and the gas density has been revisited. A synchrotron continuum emission data at 408 MHz and HI column density provide a good data for such study. But it is difficult to separate the synchrotron emission from the observed 408MHz radio emission, because the 408MHz radio emission has the component from the HI layer, as well as many components from other origins. We have tried to substract the component which is probably not related with HI layer, and present the results. We show that the method presented here is a more refined method than that of Brown & Chang (1983, hearafter BC83) to find the above mentioned relationship, and discuss the existence of such relationship in our Galaxy.

• The Korean Journal of Pain
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• v.26 no.3
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• pp.291-294
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• 2013

There are various origins for chronic abdominal pain. About 10-30% of patients with chronic abdominal pain have abdominal wall pain. Unfortunately, abdominal wall pain is not thought to be the first origin of chronic abdominal pain; therefore, patients usually undergo extensive examinations, including diagnostic laparoscopic surgery. Entrapment of abdominal cutaneous nerves at the muscular foramen of the rectus abdominis is a rare cause of abdominal wall pain. If abdominal wall pain is considered in earlier stage of chronic abdominal pain, unnecessary invasive procedures are not required and patients will reach symptom free condition as soon as the diagnosis is made. Here, we report a case of successful treatment of a patient with abdominal cutaneous nerve entrapment syndrome by ultrasound guided injection therapy.

• Journal of Applied Biological Chemistry
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• v.48 no.2
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• pp.79-83
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• 2005

While screening for nematicidal activity of bacterial origins, various pseudomonads strains were inhabited in tomato rhizosphere. One isolate designated as $PE_{10}$ was selected for studies on nematicidal properties and plant growth-promoting (PGP) activity and was identified as Pseudomonas aeruginosa based on morphological features, biochemical and physiological tests, and carbohydrate utilization. To investigate nematicidal activity, Meloidogyne incognita juvenile mortality was determined using $PE_{10}$ culture filtrate. Inhibition of strain $PE_{10}$ against Fusarium oxysporum was observed using dual culture technique. Strain $PE_{10}$ showed good siderophore activity, HCN and IAA production abilities, and growth and development enhancement of tomato.

• Microbiology and Biotechnology Letters
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• v.25 no.5
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• pp.464-467
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• 1997

A shuttle vector, pSHvec, was constructed for Lactobacillus casei (L. casei) YIT 9018 and JM1O9 by recombinant DNA technology. This vector contained the $\beta$-lactamase II gene from Bacillus cereus as a selection marker and replication origins for both Gram(+) and Gram(-) strains. It could transform the wild type L. casei YIT 9018 as well as E. coli JM109 and transformed cells were selected based on antibiotics resistance. The ability of L. casei YIT 9018 for curd formation in 11% skim milk was maintained even after transformation with pSHvec. The vector was stable as long as antibiotics were added to the medium. These results could contribute to the study of lactic acid bacteria for the industrial purpose at a genetic level.

• Journal of Korean Library and Information Science Society
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• v.32 no.2
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• pp.121-144
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• 2001

The origins, definition and research area of information economics are outlined in brief. For the better understanding and discussion of information economics, some important concept that require examination, such as information economy, resources, uncertainty and information value are reviewed in detail. Furthermore, a brief history of model and issues surrounding models are examined. In particular, some applications of models related to social sciences have been investigated since these models hold tremendous potential as diagnostic and test tools in the practical and theoretical work of library and information science.

• Microbiology and Biotechnology Letters
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• v.15 no.5
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• pp.328-333
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• 1987

The stabilities of plasmid vectors in Zymomonas mobilis were tested in batch and continuous cultures. It was found that the growth of the host Zymomonas strain was greatly affected by the size of plasmids as well as the composition of nutrient media： the host cells grew taster when harboring plasmids of smaller sizes and in n non-selective medium. All the Zymomonas plasmid vectors containing antibiotics selective markers and Zymomonas replication origins could be maintained in a stable manner over 30 generations without being integrated into host chromosomes.

• Journal of Navigation and Port Research
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• v.33 no.4
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• pp.271-275
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• 2009

A strategic decision making on location selection for product transportation includes many tangible and untangible factors. To choose the best locations is a difficult job in the sense that objectives usually conflict with each other. In this paper, we consider a multi stage multi criteria transshipment problem with different types of items to be transported from the sources to the destination points. For the optimization of the problem, a goal programming formulation will be presented in which the location selection for each product type will be determined under the multi objective criteria. In the study, we generalize the transshipment model with a variety of product types and finite number of different intermediate nodes between origins and destinations. For the selection of the criteria we selected the costs(fixed cost and transportation cost), location numbers, and unsatisfied demand for each type of products in multi stage transportation, which are the main goals in transshipment modelling problems. The related conditions are also modelled through linear formats.

• Proceedings of the KIEE Conference
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• 2001.07b
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• pp.901-903
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• 2001

This paper studies the influences of the magnetic radial forces on the vibrations of the Switched Reluctance Motor(SRM). The effects of changing the switching angle on the magnetic forces is analyzed by Finite Element Analysis. Theoretical and several experimental results explain clearly the origins of vibrations caused by radial magnetic forces and current.

• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.23.2-23.2
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• 2011

This presentation will include an overview of III-Nitride LED technology, applications, key areas for future improvements, challenges such as efficiency droop. GaN-based high-power light-emitting diodes (LEDs) suffer from high-current loss mechanisms that lead to a significant decrease in internal quantum efficiency at high drive currents, a well-known phenomenon commonly referred to as efficiency droop. Although many attempts have been made to uncover this LED's darkest secret, there is still a lack of consensus on the dominant mechanism responsible for this detrimental phenomenon. In this presentation, proposed origins and corresponding solutions to the droop-causing mechanisms will be reviewed and discussed.