• Korean Journal of Fisheries and Aquatic Sciences
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• v.30 no.3
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• pp.388-392
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• 1997

The random amplified polymorphic DNAs (RAPD) technique was used to characterize seven isolates of the green seaweed Ulvales collected from Songjeng, Haeundae, Jumunjin, Dadaepo and Wando in Korea. Total DNA was extracted by the LiCl extraction method from thalli of green seaweed. The extracted DNA (3 ng) in $25{\mu}\ell$ reaction volume was amplified by 45 cycles of the polymerase chain reaction with arbitrary primers. Thirty-four primers resulted in 1227 PCR products ranged 240 bp to 1.5 kb of both conserved and polymorphic bands. Genetic similarities of the seven isolates calculated by Jaccard's equation were ranged from $7\%\;to\;36\%$. Monostroma nitidum (Wando) was shown to be most distantly related with the others based on genetic similarity and did not produce the amplified band of 630 bp, common in Ulvales using primer OPB-01 (CATCCCCTG).

• Korean Journal of Fisheries and Aquatic Sciences
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• v.9 no.3
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• pp.163-168
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• 1976

Three species of Rhodophyceae namely Chondrus ocellatus, Grateloupia filicina and Gigartina tenella were collected from the coast of Haeundae, Busan, on June 33, 1975. And analysed with respect to the content of carrageenan and such chemical characteristics as the content of sulphate and 3, 6-anhydrogalactose, the solubility in potassium chloride solution. In addition, the same chemical properties were tested on the fractions separated by the different concentration of potassium chloride. Carrageenan content in Chondrus ocellatus was relatively higher than two other samples. All the samples showed more than thirty five percent. The Gigartina-carrageenan showed the highest 3,6-anhydrogalactose content among three samples of carrageenan obtained from different species, and the lowest marked from the Grateloupia-carrageenan. In comparison of the solubility of carrageenan in potassium chloride solution, the precipitation yields at 0.125M potassium chloride were marked in order of Chondrus-carrageenan, Grateloupia-carrageenan, and Gigartina-carrageenan, and the yields at 0.125 M to 2.0 M potassium chloride were in Gigartina-carrageenan, Grateloupia-carrageenan, and Chondrus-carrageenan, and the yields from the soluble fraction at 2.0 M potassium chloride were in order of Grateloupia-carrageenan, Gigartina-carrageenan, and Chondrus-carrageenan. It is noteworthy from the result of characteristics of carrageenans that, 3,6-andydrogalactose content was closely related to the solubility of carrageenans in potassium chloride solution and to the sulphate content which might affect reversibly.

• The Journal of Korean society of community based occupational therapy
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• v.3 no.1
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• pp.21-31
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• 2013

Objective : This study was aimed to survey the present situation and satisfaction in assistive technology of the physically disabled person. Method : 110 patients, being diagnosed with spinal cord injury and stroke, were chosen and structured interview was carried out using by a questionnaire. Result : The followings are the results of this study. First, spinal cord injury(76.2%) and stroke(72.5%) patients used the most wheelchair and mobility devices in assistive technology device. Second, they were satisfied in effectiveness of assistive technology device. Third, spinal cord injury(39.4%) patients used the most repair service in assistive technology service. Fourth, stroke(28.2%) patients used the most application and training service. Fifth, they were satisfied in professionality while were dissatisfied in service delivery program. Conclusion : The results of this study would contribute to better assistive technology for the physically disabled person.

• The Journal of Korean Academy of Sensory Integration
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• v.15 no.1
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• pp.33-45
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• 2017

Objective : This study was to investigate the relationship between sensory processing patterns and sleep quality for poor sleepers enrolled in universities. Methods : The participants are 191 students, aged 18 to 25, at the 6 universities located in Busan, Daegu, and other Gyeongsang Provinces. These participants completed the Korean version of Adolescent/Adults Sensory Profile (AASP) and the Pittsburgh Sleep Quality Index (PSQI). Results : The group with lower sleep quality of this study participants suggested low but positive correlation with sleep disturbance which is one of sleep quality components of the PSQI. Low sensory registration suggested high positive correlation and Sensory sensitivity suggested low positive correlation with daytime dysfunction. Conclusion : We identified that sensory processing patterns and sleep quality may influence each other and sleep quality can be more significantly influenced by specific sensory processing pattern. More studies requires on sleep quality and sensory processing patterns in children, adults, and elders.

• Spatial Information Research
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• v.9 no.2
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• pp.325-340
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• 2001

This research is to construct more useful Geo-spatial data by building spatial data to three dimensional and utilize the database effectively for development of application, maintenance and management program, and application technology, which is on going based on “Haeundae three dimensional database construction project”. Furthermore, the acquisition of geographic information data and the technological improvement of effective construction would be the important factors to judge the qualitative reputation of GIS. Above all, studies to create accurate data and overcome the error limitation are much more important than any other thing. Final form of Spatial Data to materialize efficient GIS(Geographic Information System) must be three dimensional spatial data which has attribute data, actual concept and numerical value of real world. In connection to that, development is on the move to improve building technique of useful spatial data and digitalize the entire country in cryberspace. $\ulcorner the cyber country lrcorner$is designed to mange the entire country systematically. This simulation would be able to cover administration of government institution, public service, corporate business and even the public life in the cyeberspace though the computer. Materialization of efficient GIS and establishment of condition as technically strong nation through the early realization of $\ulcorner the cyber country lrcorner$will provide a great opportunity to open up the global market with exportation of advanced technology.

• Communications of Mathematical Education
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• v.26 no.1
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• pp.137-154
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• 2012

Approximation' is one of central conceptions in calculus. A basic conception for explaining 'approximation' is 'tangent', and 'tangent' is a 'line' with special condition. In this study, we will study pedagogically these mathematical knowledge on the ground of a viewpoint on the teaching of secondary geometry, and in connection with these we will suggest the teaching program and the chief end for the probable teaching. For this, we will examine point, line, circle, straight line, tangent line, approximation, and drive meaningfully mathematical knowledge for algebraic operation through the process translating from the above into analytic geometry. And we will construct the stream line of mathematical knowledge for approximation from a view of modern mathematics. This study help mathematics teachers to promote the pedagogical content knowledge, and to provide the basis for development of teaching model guiding the mathematical knowledge. Moreover, this study help students to recognize that mathematics is a systematic discipline and school mathematics are activities constructed under a fixed purpose.

• Journal of the Korean Geographical Society
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• v.42 no.6
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• pp.851-862
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• 2007

The main reason of environmental pollution and destruction due to an indiscreet development of spa is the law of spa in use. According to the law of spa, the water of spa is ordained not mineral component and its efficacy but water temperature of over $25^{\circ}C$. Therefore this research was to analyze the differences between traditional spa and newly-established spa based on heat flow, geological rock, and fault relating to spa in order to call attention to a revision of the law of spa. According to the results, the location of the traditional spas was in accord with places which are Pohang, Bugok, Dongrae and Haeundae-gu of Busan, Uljin, Chungju, Usung-gu of Daejeon, Yesan, Asan, and Ichon. The heat flow of these places is over 67mW/m2 that is an average of South Korea. Relating to a fault, 92.3% of the traditional spas concurs with a fault and 33.5% of newly-established spa is in accord with a fault. 58.2% of the traditional spas and 42.7% of the newly-established spa are consistent with the granite.

• Journal of the Korean Society of Radiology
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• v.9 no.7
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• pp.467-471
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• 2015

This study's purpose is improve image quality to keep accurate tube angle in order to recognize distortion degree conditions by patient's position or tube angle and to provide exact clinical informations when taking chest AP projection for patient which have L-tube in stomach. The experimental equipment was ELMO-T6S by SHIMADZU corporation, then we put L-tube which attached 1 mm gap scales ruler on chest phantom surface. The experiment set by 90 kVp, 4 mAs, 120 cm distance. Each phantom position which changed supine, 30degree, 45degree, 60degree on the table exposured direct, ${\pm}5degree$, ${\pm}10degree$, ${\pm}15degree$ to head and feet directions. As a result, L-tube tip's position was changed by patient's position and tube angle. When patient's position is supine, tip's position change was lower than 30degree, 45degree, 60degree. We have to adjust patient's position or tube angle in order to occur image distortion by fault tube angle when confirming correct position L-tube tip through chest x-ray. Also, Radiological technologist try to make accurate evaluation index for satisfied L-tube insertion.

• Journal of Veterinary Clinics
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• v.31 no.6
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• pp.477-482
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• 2014

The aim of this study was to investigate and compare technique, surgical time, and complications of laparoscopic ovariectomy using $LigaSure^{TM}$ and bipolar vessel sealing system in cats. Laparoscopic ovariectomy was performed under general anesthesia on 10 healthy female cats admitted for elective ovariectomy. Surgery was performed through three midline portals. Each ovary was randomly-assigned to removal by use of either $LigaSure^{TM}$ or bipolar vessel sealing system. Duration of predetermined surgery intervals and complications were compared. Bipolar OVE ($2:16{\pm}1:14$ minutes) took significantly longer surgical time compared to the $LigaSure^{TM}$ OVE ($1:24{\pm}0:59$ minutes, P = 0.021). The ovarian pedicle fat and obesity did not influence surgery duration. Intraoperative hemorrhage occurred with bipolar OVE in three cats, but had no significant influence on surgical time. The results suggest that both $LigaSure^{TM}$ and bipolar devices appear to be effective, but $LigaSure^{TM}$ can be used as a stand-alone device that decreases surgical time and complication compared with bipolar vessel sealing system.

• Journal of the Korean Society of Radiology
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• v.10 no.3
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• pp.187-193
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• 2016

In this study, we performed the carotid artery ultrasound targeting 140 subjects who have conducted to evaluate the changes in intima-media thickness(IMT) and plaque correlated with the presence or absence of a hematological test of the carotid artery. Considering that the IMT thickness more than 1mm is abnormal based on the carotid artery ultrasound to assess the presence or absence of plaque, and examined the correlation by classifying the blood lipid value and the fasting blood glucose level through the serum test. Consequently, the fasting blood glucose level is being analyzed as independent predictors of causing dental plaque(p=0.033), cut off value was determined as 126 mg/dL(sensitivity 56.25%, specificity 68.38%) in ROC curve analysis. Furthermore, the odds ratio appeared 1.01 times the value in the Logistic regression. Therefore, it seemed that the necessity to prospective studies in a number of subjects are considered, and also taking into account a number of blood test values along with the sonography of the carotid artery as a valuable part for effective primary prevention and follow-up observation of the cardiac and brain vascular disease is highly recommended.