• 대한두경부종양학회지
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• 제33권2호
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• pp.81-84
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• 2017

Langerhans cell histiocytosis (LCH) is a heterogeneous disease, characterized by accumulation of dendritic cells with features similar to epidermal Langerhans cells. It is a rare entity that may involve various organ levels such as the skeletal, pulmonary, hematopoietic and lympho-vascular systems. The patient was a 1-year-old female presented with fever associated with otorrhea and palpable cervical lymph node for 4 days. Neck ultrasonography and Computed tomography imaging revealed multiple enlarged lymph nodes suggesting suspicious malignant morphology. Lymph node biopsy was performed under general anesthesia. Histological and immunophenotypic examination showed the lymph node to be consistent with LCH. The patient was given chemotherapy.

• 산경연구논집
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• 제8권4호
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• pp.15-21
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• 2017

Purpose - In this work, we examined the causal relationship between credit loans from households (CLH), loan collateralized with housing (LCH) and an interest of certificate of deposit (ICD) among others in South Korea. Furthermore, the optimal forecasts on the underlying model will be obtained and have the potential for applications in the economic field. Research design, data, and methodology - A total of 31 realizations sampled from the 4th quarter in 2008 to the 4th quarter in 2016 was chosen for this research. To achieve the purpose of this study, a regression model with correlated errors was exploited. Furthermore, goodness-of-fit measures was used as tools of optimal model-construction. Results - We found that by applying the regression model with errors component ARMA(1,5) to CLH, the steep and lasting rise can be expected over the next year, with moderate increase of LCH and ICD. Conclusions - Based on 2017-2018 forecasts for CLH, the precipitous and lasting increase can be expected over the next two years, with gradual rise of two major explanatory variables. By affording the assumption that the feedback among variables can exist, we can, in the future, consider more generalized models such as vector autoregressive model and structural equation model, to name a few.

• 식물병연구
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• 제24권3호
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• pp.233-236
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• 2018

A multiplex RT-PCR (mRT-PCR) assay was developed for the detection of the recently reported viruses, Cherry virus A (CVA), Little cherry virus 1 (LChV-1), and Little cherry virus 2 (LChV-2), in cherry plants in Korea. Eight sets of primers were designed for each virus and their specificity was tested by using various combinations of mixed primer sets. From the designed primer sets, one combination was selected and further evaluated to estimate the optimum temperature and detection limits of the mRT-PCR. A newly developed mRT-PCR assay was also tested using 20 cherry samples collected in the field. This mRT-PCR assay may be a useful tool for field surveys of diseases and the rapid detection of these three viruses in cherry plants.

• 대한영상의학회지
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• 제82권4호
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• pp.936-942
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• 2021

랑게르한스 세포 조직구증은 희귀한 질환으로 일반적으로 근골격계를 침범하며, 대부분 소아에게서 발생하고 성인의 쇄골에서 발병하는 경우는 극히 드물다. 이 증례 보고는 50세 남자에게서 영상학적으로 발견되어 병리학적으로 확진된 쇄골의 랑게르한스 세포 조직구증의 사례이다. 또한 저자들은 문헌고찰과 함께 단순촬영, 컴퓨터단층촬영, 자기공명영상법, 그리고 양전자방출단층촬영-컴퓨터단층촬영 영상 등의 다양한 영상검사 소견을 보고하고자 한다.

• Journal of Chest Surgery
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• 제38권12호
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• pp.866-869
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• 2005

랑게르한스 세포 조직구증(Langerhans Cell Histiocytosis)은 병적인 랑게르한스 세포의 과도한 증식과 침윤으로 생기는 병으로 병태 생리가 확실하게 밝혀져 있지 않다. 소아에서 백만명 당 3$\∼$4명의 발생률을 보이나 성인의 경우 그 발생빈도가 확실치 않다. 피부, 귀, 골수, 간, 비장, 폐, 뇌하수체-시상하부, 위장관 등 거의 모든 장기가 침범되며 뇌하수체-시상하부 축이 침범되면 요붕증이 발생한다. 원발성 폐 랑게르한스 세포 조직구증이 타장기의 침범과 동반되는 경우는 드물며, 요붕증을 동반한 경우는 더욱 드물다. 국내에서 랑게르한스 세포 조직구증 중 요붕증을 동반한 예는 다수의 보고가 있었으나 중추신경계 등 폐 이외의 장기침범이었으며 원발성 폐 랑게르한스 세포 조직구증과 동반된 중추성 요붕증은 1예가 보고되었다. 저자는 중추성 요붕증을 동반한 폐 랑게르한스 세포 조직구증을 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제38권11호
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• pp.799-802
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• 2005

랑거한스세포 조직구증식증은 호산구성 육아종, Letterer-Siwe병, Hand-Schuller 증후군을 포함하는 질환으로 이전에는 조직구증식증 X로 명명되어 왔다. 이 질환의 임상적 양상은 다양하며, 기본적인 종양의 성질은 양성이나 파종되는 성질이 아주 강하다. 질환의 자연 경과는 예측할 수 없다. 하지만, 뼈에 생긴 단일 병변일 경우 광범위 절제를 통해서 완치율을 높일 수가 있다. 대부분의 랑거한스세포 조직구증식증 환자에서는 주로 두개골 천정에 골용해 병변이 나타나며, 드물게 두개골 기저부와 대퇴골을 침범하기도 한다. 늑골에 생기는 단일 병소의 랑거한스세포 조직구증식증은 비교적 드물다. 본 저자들은 늑골에 생기는 단일 병소의 랑거한스세포 조직구증식증 2예를 외과적 절제술로 치료하였기에 보고한다.

• 한국가금학회지
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• 제28권1호
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• pp.27-40
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• 2001

This study was conducted to investigate the effects of feeding various Lactobacillus on performance, nutrients digestibility, intestinal microflora, and fecal noxious gas of broiler chicks. One thousand eighty one dat old male broiler chicks were fed into Lactobacillus crispatus avibrd 1(LCB), Lactobacillus reuteri avibro 2(LRB), Lactobacillus crispatus avihen 1(LCH), and Lactobacillus vaginalis avehen 2(LVH) at the level of $10^{4}$ and 10(sup)7cfu/g diet. There were four replicates with thirty chicks per pen. Diets contained ME 3,100, 3,100kcal/kg, and CP 22.0, 20.0% for starting and finishing period, respectively. Weight gain of checks fed Lactobacillus spp. tended to increase from the first week and was higher from 50 to 100g in Lactobacillus treatments than control. Feed intake and feed conversion were not statistically different of all treatments. Dry Matter(DM) digestibility of Lactobacillus treatments was tended to improve compared to that of control, but was not significantly different. Protein and Ca digestibility were also tended to improve in Lactobacillus treatments relative that of control. Lactobacillus treatments showed improved tendency in crude ash and fat compared to those of control, whereas phosphorus digestibility was not consistency. Nutrients digestibilities of bird fed LCH were superior to those of other treatments. It showed significantly higher in Ca and P digestibility than control(P〈0.05). Total Lactobacillus spp. of birds fed various lactobacillus was significantly higher in ileum for five weeks(P〈0.05), but was not different at cecum. Yeast was thought to be not completely attached to intestinal lumen for one week. However, total number of yeast was significantly increased in cecum and ileum from three weeks old chicks(P〈0.05). The number of anaerobes exhibited to tendency the increase in Lantobacillus treatments from one week old of age at both ileum and cecum. Moisture contents of birds fed Lactobacillus spp. was shown from 27 to 30% at five weeks old, whereas it was 38.2% in control. It decreased approximately 25% in Lactobacillus treatments relative to that of control and showed significance between them(P〈0.05). Fecal $NH_{3}$ gas emission was significantly decreased in Lactobacillus treatments and maintained $\frac{1}{3}$to $\frac{1}{2}$ of control(P〈0.05). LCH and LVH treatments were most effective to decrease fecal $NH_{3}$ gas and especiallt impreved ti significantly at the level of the level of 10(sup)7cfu/g diets covpared to that of $10^{4}$ cfu/g diets and control(P〈0.05). In conclusion, feeding Lactobacillus spp. increase performance and nutrients digestibilities of broiler chicks and improve environments of house. Proper supplemental level of Lactobacillus spp. is considered more than $10^{4}$ cfu/g diet.

• 자연과학논문집
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• 제7권
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• pp.83-90
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• 1995

탄소함량이 다른 두 Hadfield's강의 (고Mn강) 소성에 관한 연구를, 냉간압연시 나타나는 금속미세조직, texture등으로 조사하였다. Low carbon Hadfield's steel (LCHS, 0.65 wt. % C)에서는 적층결함, 쌍정및 brass type shear bands가 냉간압연시 나타나고, 이때 쌍정은 Intrinsic적층결함이 차곡차곡 쌓여서 나타나는것으로 생각된다. Texture 는 70-30 황동과 초기에는 비슷하나, 40% 이상의 변형에서는 마르텐사이트 상변화에 의해서 이상 texture가 나타난다. 한편 high carbon Hadfield's steel (HCHS, 1.35 wt. % C)에서는 전위엉킴, 쌍정및 copper and brass type shear bands가 소성 변형시 나타난다. Texture 는 70-30 황동과 비슷하고 이상 texture는 나타나지않고있다. 이러한 사실은 HCHS에서 마르텐사이트 상변화가 나타나지 않는것과 또 탄소원자가 편석되지 않는것과 잘일치하고 있다. LCHS와 HCHS사이의 미세조직과 texture의 변화에 많은 차이점을 보일지라도, 적층결함에너지의 차이는 매우작고 약 ($2 mJm^-2$), 탄소편석이 오직 LCHS에서만 일어나고 있다. 따라서 탄소와 같은 작은 원자의 편석이 미세조직 뿐만아니라, texture에 영향을 미치는 것을 생각 할 수 있다. 이러한 탄소의 편석은 LCHS에서 마르텐사이트 상변화와도 관계가 깊다.

• 전자공학회논문지B
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• 제29B권3호
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• pp.47-54
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• 1992

This paper presents an image processing method which emphasizes a certain perception feeling on a color image. A series of fuzzy image processing schemes are proposed, which transform an color image represented in the LCH coordinate system to the image with a certain perception feeling based on the rules and fuzzy inference. To obtain the rules, results of the sensory perception tests are applied to the quantification theory. The proposed schemes can be effectively utilized in the color copy system, since printed outputs possibly look better than originals.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제19권1호
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• pp.55-60
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• 1997

Langerhans Cell Histiocytosis(Idiopathic Histiocytosis, Histiocytosis-X) is most often found in children and young adults, and cell proliferation with specific phenotype shows ultrastructural and immunohistochemical similarities with Langerhans Cells that normally exist in epithelium and mucosa. This disease occurs as single or multiple lesions in skull, ribs, vertebrae, mandible and long bones, and when it involves mandible, clinical sign and symptoms such as bone swelling and pain are noticed. When it involves alveolar bone, severe tooth mobility as well as gigival inflammation, proliferation, and ulceration are commonly found, and so it is not easy to differentiate it from general inflammatory diseases. Any local lesion at the tooth apex on the x-ray view needs to be differentiated from inflammatory disease, and multiple lesions from multiple ostoeoma and chronic multifocal osteomyelitis. This case is LCH in 51-year-old male patient ; this is a rare case, for the patient belongs to an age group with very low incidence rate of the disease. although three-timed biopsy tests and longterm observation at two university hospitals, it was misdiagnosed as multifocal osteomyelitis.