• Korean Journal of Head & Neck Oncology
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• v.33 no.2
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• pp.35-38
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• 2017

Neurilemmomas are benign tumors originating from Schwann cells, and may occur in various nerves; however, they rarely originate from the lingual nerve. When a lingual nerve neurilemmoma develops in the submandibular space, it can be challenging to diagnose it preoperatively, and this tumor can be misdiagnosed as a usual submandibular gland tumor owing to the rarity and a lack of knowledge about lingual nerve neurilemmomas. Therefore, it is important to consider neurilemmoma in the differential diagnosis in cases where the characteristics of the tumor do not correspond with the typical findings of submandibular gland tumors, in order to avoid inadvertent sacrifice of the nerve because of incorrect diagnosis of a salivary gland tumor. Herein, we report a lingual nerve neurilemmoma in the submandibular space, along with a literature review, to highlight the clinical significance and improve understanding of this type of tumor.

• Korean Journal of Head & Neck Oncology
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• v.30 no.1
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• pp.28-30
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• 2014

Foreign bodies in upper aerodigestive tract migrating into retropharyngeal space are rarely encountered emergent cases in otolaryngologic fields. A 60-years-old female presented throat pain and lump sense after a meal. Computer tomography showed metallic foreign body impacted in the retropharyngeal space. A hypopharyngeal perforation was suspected by through flexible laryngoscopy and gastrointestinal endoscopy. It was successfully removed by external cervical approach, and we report this case with a review of the related literatures.

• Journal of Families and Better Life
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• v.23 no.3 s.75
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• pp.169-183
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• 2005

The present study purposed to identify differences and similarities in traditional residential space among Korea. China and Japan, which share similar social structure, and to make a comparative analysis on differences in traditional residential space according to family relation in the three countries. For these Purpose, this study selected residences, which are similar to one another in terns of time, class and economy and analyzed them using their floor plans and photographs. The results of this research are as follows. Knrea, China and Japan, all of which have family-centered social structure, separate their residential space from the external society and particularly women's space is placed inside men's space or in a secluded area. The most remarkable characteristic of residential space in Korea is the division of living spare between men and women. Space is allocated according to the hierarchical order of families. In this way, the position or order of family members is reflected in the use of space. Characteristically in China based on the large-family system each family is given a space for independent life. Particularly as the relation among brothers is emphasized, space is allocated equally to all brothers but the status of a space is determined by the order of the residents. Residential space in Japan is organized to emphasize the absolute authority and status of the head of the family. As the space is planned focused on the family head's daily life and guest reception, the relation among other family members is ignored. That is, Japanese residence is a social space for the family head's guest reception, Chinese residence is a family-centered space rather than a social space, and Korean residence accommodates both space for family life and social space.

• Korean Journal of Bronchoesophagology
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• v.13 no.1
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• pp.47-50
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• 2007

Foreign bodies of the parapharyngeal space can cause severe complications such as descending suppurative mediastinitis, jugular thrombophlebitis, cavernous sinus thrombosis and carotid erosion. Therefore, early diagnosis and surgical intervention are needed to reduce morbidity and mortality. We present a case of a toothbrush as foreign body in the parapharyngeal space in 28-year-old male patient. The tooth brush was broken and the remnant of that was left in the patient's mouth. Under general anesthesia, intraoral approach was undertaken and successfully the toothbrush was removed, and then incision and drainage was done by transcervical approach. We report this case with review of literature.

• Bulletin of the Korean Chemical Society
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• v.27 no.5
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• pp.649-656
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• 2006

The proposed head-space supercritical fluid extraction (SFE) methodology as an alternative to an existing conventional procedure was explored for the determination of organochlorine compounds in aqueous matrix. In this study, polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were utilized as target analytes. To enhance the recovery efficiency, the factors such as the $CO _2$ density, the extraction time, and the extraction mode were investigated. Furthermore, the analytical procedures and the results obtained were compared with those provided by the conventional method (the U.S. EPA method 8080). Under the optimized conditions, i.e., a combination of static with dynamic SFE mode at 2,000 psi and 40 ${^{\circ}C}$, the head-space SFE methodology gave equivalent or better to the conventional method in recovery efficiencies with clear advantages such as simple sample treatment and fast analysis time as well as reduced solvent and reagent consumption.

• Journal of Energy Engineering
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• v.2 no.2
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• pp.225-230
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• 1993

Isothermal vapor-liquid equilibrium data have been measured for binary systems n-dodecane-1-defanol, n-doderane-1-dodecanol, and 1-decanoi-1-dodecanol at 140$^{\circ}C$ by using head space gas chromatography (H.S.G.C) as a static method. The activity coefficients, calculated taking into acount the nonideality of the liquid phase, were correlated with the conventional g$\^$E/ model, Margules, van Laar, Wilson, NRTL equations. These equilibrium data were thermodynamically consistent by Rrdlich- kister test, among these data, system n-dodecane-1-detanoi has minimum azeotrope.

• Applied Chemistry for Engineering
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• v.5 no.4
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• pp.706-713
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• 1994

Isothermal vapor-Liquid equilibrium data have been measured for binary systems MTBE-methanol, MTBE-n-heptane, and methanol-n-heptane at $45^{\circ}C$ and $65^{\circ}C$ by using head space gas chromato-graphy (H.S.G.C). Among these systems a minimum azeotrope was observed in both of MTBE-methanol system and n-heptane-methanol system. Particularly n-heptane-methanol system has a heterogeneous minimum azotrope since it has an immisible region. These equilibrium data were correlated with the excess Gibbs energy model, and the thermodynamic consistency test was also carried out by using Redlich-Kister equation.

• Korean Journal of Head & Neck Oncology
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• v.35 no.2
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• pp.61-65
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• 2019

Hamartomas are non-neoplastic malformations or congenital errors of tissue development. Hamartoma is composed by an excessive growth of mature tissue present in wrong proportions and abnormal arrangements. The lesion usually presents as a submucosal mass with ill-defined margins. Hamartoma occurs in all areas of the body, especially in the liver, spleen, kidney and lung. However, hamartoma is very rare in the head and neck. Presenting symptoms of hamartoma are typically vague and nonspecific. Treatment of hamartomas consists of adequate surgical excision. We present a 59 year-old male patient who presented with submental swelling. Malignancy could not be ruled out with preoperative radiologic examination, so surgical excision was planned. The mass was excised with transcervical approach. Histopathologic examination has confirmed the mass as a mucinous gland adenomatoid hamartoma.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.12
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• pp.123-134
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• 2018

The purpose of this study was to analyze the space of upper class housing in Andong through the oral life history of women in terms of sexual life. Even though the living was centered on women, the women of Joseon were alienated from the history. For this reason, the life history of head family housing was not recorded in the language of women, and often passed on orally. Also sexual life is a important part in daily life, but it is hard to be recorded or mentioned in Confucian society, and there is not much space research related to sexual life. Now there is not a lot of head family housing left, and the number of people who can tell the life history which is not recorded and the storyteller is also decreasing. From now on, I will record what I have experienced or passed through interviews of the residents living in head family housing and then analyze the characteristics of the sexual life.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.27 no.4
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• pp.337-343
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• 2001

Objective. Disc displacement may affect the joint space narrowing between condyle head and glenoid fossa. This study was designed to evaluate the correlation between the joint space change and the directions of disc displacement. Study Design. Two hundreds temporomandibular joints MR images of TMD patients (170 joints) and asymptomatic volunteers (30 joints) were evaluated for this purpose. Anterior disc displacement was divided into 3 stages (normal, little to mild, and moderate to severe displacement) based on sagittal images. And sideways displacement was classified as 3 categories (center, medial and lateral displacement) based on coronal images, then joint spaces were measured at medial, central and lateral parts of condyle head on coronal MR images, respectively. The joint spaces of 7 groups divided according to the severity and the direction of disc displacement were compared. Results. The reduction of the joint space was affected by sideways disc displacement at the opposite side of the condyle head, except the cases accompanied with severe anteriorly and laterally displaced disc. Conclusion. The sideways disc displacement affected on the opposite side temporomandibular joint space width.