• Mycobiology
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• v.47 no.1
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• pp.31-39
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• 2019

Three fungal isolates designated as CNUFC-YR329-1, CNUFC-PTS103-1, and CNUFC-PTS2-1 were discovered during a survey of fungal diversity of the order Mortierellales from freshwater and pine tree rhizosphere soil samples in Korea. The strains were analyzed morphologically and phylogenetically based on the internal transcribed spacer (ITS) and large subunit (LSU) of ribosomal DNA gene sequences. Based on their morphology and phylogeny, the three isolates were identified as Mortierella elongata, M. horticola, and M. humilis, respectively. To the best of our knowledge, M. elongata, M. horticola, and M. humilis, belonging to an undiscovered taxon, have not been previously described in Korea.

• Food Science and Biotechnology
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• v.15 no.4
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• pp.516-522
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• 2006

This study was to assess the antimicrobial action of 2-hydroxyethyl ${\beta}$-undecenate purified from cumin (Cuminum cymium L.) seed against the oral anaerobe, Streptococcus mutans, which is associated with gingivitis, specifically focusing on the catabolic effect. 2-Hydroxyethyl ${\beta}$-undecenate inhibited the acid production and growth of S. mutans after 30 hr incubation at 50 mM. The glycolysis of S. mutans with glucose as substrate was similarly sensitive to 2-hydroxyethyl ${\beta}$-undecenate, with 70% inhibition of glucose utilization at 5 mM and 90% inhibition at 50 mM. In addition, this substance potently inhibited the glycolysis enzyme, glyceraldehyde-3-phosphate dehydrogenase (GADP); the phosphoenolpyruvate, glucose phosphotransferase (Glucose-PTS); and membrane ATPase, in a concentration dependent manner. The $IC_{50}$ values for inhibition of GADP, Glucose-PTS, and ATPase were 1, 0.9, and 5 mM, respectively. Furthermore, 2-hydroxyethyl ${\beta}$-undecenate inhibited teeth calcium ion elution by 80% at 50 mM. These results suggest that 2-hydroxyethyl ${\beta}$-undecenate is a potent inhibitor of carbohydrate metabolism and the growth of S. mutans JC-2.

• Journal of the Korean Society of Safety
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• v.29 no.5
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• pp.123-128
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• 2014

This study investigated a posttraumatic stress, social support, and work burden and identified related factors which exerted influence on posttraumatic stress of new firefighters. Data were gathered from total of 144 new firefighters. Also, 22 PTS items, 20 work burden items, and 8 social support items were analyzed by SPSSWIN 21.0 program. Posttraumatic stress according to general characteristics showed significant difference in gender(t=-2.57, p=0.01), experience of self danger(t=3.06, p=0.00), experience of rescuee danger(t=2.41, p=0.02), and experience of colleague danger(t=3.43, p=0.00). High risk group of PTS was 20.1%. Posttraumatic stress, social support, and work burden showed significant difference in the high and low risk group. Posttraumatic stress was correlated with work burden(r=0.34, p=0.00), social support(r=-0.29,p=0.00). Factors influencing PTS were Experience of colleague danger(${\beta}$=1.274, 95% CI=0.08-0.96), social support(${\beta}$=-0.090, 95% CI=0.85-0.98) and work burden(${\beta}$=0.057, 95% CI=1.02-1.10). We need to reduce the work burden caused by influencing variable of traumatic stress and create more preventive discipline of traumatic stress for the new firefighters to improve the social support at work or home. Also, posttraumatic stress has to be managed consistently with support by changing the social attitudes and we need to seek the new system that anybody can get a consultation of a specialist.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.9A
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• pp.746-753
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• 2003

In this paper, we propose an efficient algorithm for non-streaming synchronized data processing based on ATSC-DASE in terrestrial digital data broadcasting services. Non-streaming synchronized data is encapsulated in DSM-CC sections with PTS(presentation time stamp) values associated with A/V and it is transmitted in a form of MPEG-2 TS(transport stream). At the receiver, the transmitted A/V data are processed by PC based set-top box(STB) in real-time, and the transmitted non-streaming synchronized data is also stored at the STB and is displayed at right time by the proposed algorithm. To verity the proper operation of the proposed algorithm, we make a scenario for non-streaming synchronized data by XML, and finally we are able to display it properly by using declarative application(DA) browser.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.12A
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• pp.1002-1008
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• 2003

In terrestrial data broadcasting, we are just on the beginning stage in all aspects including implementation and design techniques and only asynchronous data processing has been receiving a little study. In this paper, we therefore propose an efficient processing algorithm for synchronization of asynchronous data by using trigger information to make more diverse service possible with a variety of contents. In the proposed algorithm, trigger data is encapsulated in DSM-CC section and transmitted in a form of MPEG-2 TS. The data is then separated in PC type set-top box and detached asynchronous data and trigger data are stored by the proposed algorithm. Pre-loaded asynchronous data is displayed when STC(system time clock) has the same value as PTS(presentation time stamp). Proper operation of the proposed algorithm was verified by using a content of asynchronous data with extensible markup language(XML) and a declarative application(DA) browser.

• Applied Microscopy
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• v.40 no.2
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• pp.101-108
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• 2010

Vitex negundo is an aromatic plant which releases a unique scent due to the presence of essential oil stored presumably within glandular trichomes. The focus of this research was to study developmental patterns of glandular trichomes in Vitex negundo leaves using electron microscopy. There are two types of glandular trichomes which develop on the leaf epidermis of Vitex negundo, peltate glandular type (PT) and capitate glandular type (CT). Structural features differ significantly depending on size and density, formation of secretory cavity, plastid, etc during developmental stages. In young leaves, undifferentiated PTs are densely distributed in the upper epidermis, but are not externally exposed in the lower epidermis because they are covered by non-glandular simple trichomes. Upon leaf development, PTs and CTs show clear structural differentiation in the upper and lower epidermis. PTs are composed of up to eight head cells (ca. 35~40 ${\mu}m$) and one stalk cell (ca. 5 ${\mu}m$), while CTs are composed of four head cells (ca. 10~15 ${\mu}m$) and 1~2 stalk cells (ca. 10 ${\mu}m$). Although secretory cavities develop on the secretory head cells, their size, structure, and formation proceed very differently depending on trichome type. In early development of PT, a large cavity with numerous secretory vesicles form rapidly from the head cells. In CT, however, only a small secretory cavity is formed, slowly relative to PT, without secretory vesicles. The PTs are considered to play an important role in releasing the aromatic components of Vitex negundo.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.1
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• pp.43-45
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• 2013

Background: The aim of this epidemiological study was to establish the laterality of breast cancer (BC) and its association with size, receptor status of the primary tumor and bone metastasis (BM) in a local population. Materials and Methods: This retrospective study included cases of BC from Jan-2009 to Dec-2011 who were referred for metastatic work up or follow up survey with Technetium-99m MDP bone scan (BS) to the Nuclear Medicine Department of Karachi Institute of Radiotherapy and Nuclear Medicine (KIRAN). A total of 384 patients out of 521 were included and all reviewed for age, primary tumor size (PTS), laterality, receptor status like estrogen receptor (ER) progesterone receptor (PR) and Her-2-Neu receptor, presence or absence of BM with sites of involvement and time interval between diagnosis of BC and appearance of BM. Results: The left to right sided BC proportion was significantly higher than unity (59%:41%; p<0.001). The right sided BC was observed in younger age group (46:52 years; p<0.0001) and with a smaller PTS than the left sided (3.43:4.15 cm; p<0.0001). The patients with BM had relatively higher negative receptor status with a significant predominance of right sided BC. The overall incidence of BM on BS was 28% and relatively higher in right than left breast (33%:24% p=0.068). The average number of BM sites was also significantly greater for the right side (6:4, P<0.0001). The % cumulative risk of BM in right breast was noted at significantly smaller PTS than left side with log rank value of 5.579; p<0.05. The Kaplan Meier survival plot for event free survival of BM in left sided BC was significantly higher than for the right side (log rank value=4.155, p<0.05), with an earlier appearance of BM in right BC. Conclusions: 1) A left sided predominance of BC was seen in local population; 2) right sided BC had a more aggressive behavior with extensive and earlier appearance of BM at relatively younger age, smaller PTS and receptor (s) negativity.

• Advances in pediatric surgery
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• v.2 no.2
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• pp.94-99
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• 1996

The management of twenty-two children with blunt abdominal trauma was analyzed. Nineteen cases had intraabdominal injuries; involving the spleen in 7 cases, the liver in 5, the pancreas in one and the bladder in one. There were five case multiple intraabdominal organ injuries. Seventeen out of 19 patients were treated non-operatively, but one was operated upon later because of delayed bleeding. Thirteen patients required transfusion in the non operated group, the mean values of the Pediatric Trauma Score (PTS) was 11.3. The mean lowest hemoglobulin(LHb) was 9.1 g/dL. The mean value of three cases with extraabdominal injuries were 9.0 and 8.3 g/dL respectively. The average amount of transfusion was 17.3 ml/kg. In the operated group, 2 cases were transfused an average of 139.8 ml/kg and their mean PTS was 5 and LHb was 6.6 g/dL. In one out of 16 non-operated cases, intrahepatic hematoma developed and but resolved conservatively. However, two out of 3 operated cases suffer complications such as an intubation granuloma and an intraabdominal abscess with wound dehescence. In conclusion, non-operative management in child with blunt abdominal trauma was safe in Grade I and II solid organ injuries. The decision for operation should be based on the hemodynamic stability after initial resuscitation including transfusion.

• Proceedings of the Microbiological Society of Korea Conference
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• 2005.05a
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• pp.216.2-216
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• 2005

• Proceedings of the Korean Nuclear Society Conference
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• 2005.05a
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• pp.901-902
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• 2005