• Title/Summary/Keyword: Review Features

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Porphyry Molybdenum Deposits: A Literature Review (몰리브덴 반암광상: 문헌해설)

  • Park, Won Choon
    • Economic and Environmental Geology
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    • v.14 no.1
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    • pp.1-25
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    • 1981
  • This paper is a literature review on the following subjects: 1) relationships between porphyry molybdenum and copper systems; 2) hydrothermal environments of molybdenite depositions; 3) genetic significance of molybdenite polyforms; and 4) trace element patterns in molybdenite useful as an exploration guide. The geologic similarities between porphyry molybdenum (e. g. Climax) and porphyry copper (e. g. Bingham) systems exist, and similar techniques can be applied for exploring deposits of either type. Several features suggest that tungsten and tin may form porphyry-like systems (i. e. lowgrade, large tonnage). The clustering of porphyry-like systems in geophysically distinctive batholithic provinces is well documented and provides larger targets for reconnaissance exploration. Geochemical studies suggest that uranium should often occur in close proximity to molybdenum ores in igneous as well as sedimentary environments.

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Disseminated Peritoneal Leiomyomatosis with Atypical Features and Comorbid Uterine STUMP: a Case Report and Review of the Literature

  • Ryu, Kyunghwa;Lee, Eun Ji;Chang, Yun-Woo;Hong, Seong Sook;Hwang, Jiyoung;Oh, Eunsun;Nam, Bo Da;Choi, Inho;Lee, Hyo-Pyo
    • Investigative Magnetic Resonance Imaging
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    • v.24 no.3
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    • pp.162-167
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    • 2020
  • Disseminated peritoneal leiomyomatosis (DPL) is a very rare benign disease, characterized by multiple solid subperitoneal or peritoneal smooth muscle nodules in abdominopelvic cavity and malignant transformation is extremely rare. Also, uterine smooth muscle tumors of unknown malignant potential (STUMP) is a rare tumor, which is regarded as subclassification in uterine smooth muscle tumors between benign and malignant criteria. Pathogenesis of DPL is uncertain, but increasing evidence of iatrogenic cause including laparoscopic myomectomy has been reported. We report a case of a 28-year-old female with previous history of laparoscopic myomectomy diagnosed with DPL with atypical feature and concurrent uterine STUMP using computed tomography (CT) and magnetic resonance imaging (MRI), as well as present a review of the literature.

Characterization of Growth Hormone Secretion to Growth Hormone releasing Peptide-2 in Domestic Animals - A Review

  • Roh, Sang-Gun;Lee, Hong-Gu;Phung, Long Thang;Hidari, Hisashi
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.5
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    • pp.757-766
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    • 2002
  • Growth hormone-releasing peptide-2 (GHRP-2, also named KP102) is a new hexapeptide of a series of synthetic growth hormone-releasing peptides (GHRPs) which stimulates the secretion of growth hormone (GH) in vitro and in vivo in several species including calf, sheep and pig. The GH-releasing activity of GHRP-2 is two to three times more effective than that of the original GHRP-6, and GHRP-1 in the rats and humans. To date, GHRP-2 seems to be the most potent member of the family of GHRPs. Since the GHRPs are short peptides (5-7 amino acid residues), they are synthesized easily and are not as readily degraded in plasma as GHreleasing hormone (GHRH). These features ameliorate their potential on domestic animals because of their chemical nature the GHRPs are efficacious when administered i.v. orally or orally. However, studies in cow, pig and sheep do not indicate such a close relationship between GHRH, somatostatin (SS) and GH, calling into question the general applicability of the human and rat models. Perhaps there is an important role for an endogenous GHRP in the regulation of GH secretion in domestic animals. This review provides an overview on the current knowledge of physiological role of GHRP-2 in domestic animals.

Using Web2.0 Techniques to Overcome the Limitations of Current DACUM Method : A Case Study (Web2.0을 이용한 DACUM 기법의 변형과 활용 : 서울시 교육체계 수립 사례를 중심으로)

  • Kim, Min-Jeong;Hwang, Eun-Dong
    • Journal of Information Technology Services
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    • v.7 no.3
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    • pp.159-174
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    • 2008
  • The purpose of this study was to introduce a case that used web2.0 techniques to overcome the limitations of current DACUM method. For the purpose, firstly, we summarized the characteristics and limitations of current DACUM as a method to develop an occupational curriculum. The summary indicated that the results of DACUM process are likely to be influenced by the selection procedure of out-performers. In addition, current DACUM method is difficult to be adapted to big organizations, difficult to reflect rapidly changing society, and lack of qualitative review for the findings. To overcome these limitations, Seoul city designed a transformed DACUM method based on web2.0 techniques. The most outstanding features of the transformed DACUM method were web-based peer review systems to validate the findings of DACUM workshop. We concluded that the transformed DACUM method was proper to big size organizations faced with rapid changes and some organizations with special needs to establish their training systems based on the results of job analysis. Finally, we discussed several practical tips for the Seoul city's method.

CNN Architecture Predicting Movie Rating from Audience's Reviews Written in Korean (한국어 관객 평가기반 영화 평점 예측 CNN 구조)

  • Kim, Hyungchan;Oh, Heung-Seon;Kim, Duksu
    • KIPS Transactions on Computer and Communication Systems
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    • v.9 no.1
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    • pp.17-24
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    • 2020
  • In this paper, we present a movie rating prediction architecture based on a convolutional neural network (CNN). Our prediction architecture extends TextCNN, a popular CNN-based architecture for sentence classification, in three aspects. First, character embeddings are utilized to cover many variants of words since reviews are short and not well-written linguistically. Second, the attention mechanism (i.e., squeeze-and-excitation) is adopted to focus on important features. Third, a scoring function is proposed to convert the output of an activation function to a review score in a certain range (1-10). We evaluated our prediction architecture on a movie review dataset and achieved a low MSE (e.g., 3.3841) compared with an existing method. It showed the superiority of our movie rating prediction architecture.

Clinicopathologic Factors in Selection of Surgical Procedure in Parotid Tumor Surgery - A Retrospective Review of 245 Cases - (이하선 종양 수술술식 선택에 있어 임상병리학적 요인 - 245예의 후향적 분석 -)

  • Kim Woon-Won;Kim Sang-Hyo
    • Korean Journal of Head & Neck Oncology
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    • v.19 no.2
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    • pp.137-141
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    • 2003
  • Introduction: A routine superficial parotidectomy with facial nerve dissection in parotid tumor surgery often results in facial dysfunction, Frey syndrome and defect in operation site. Formal facial nerve dissection has been a recommended procedure, because pleomorphic adenoma is a commonly recurrent tumor in case of inadequate surgical management, however it can not be always reasonable in aspect of postoperative sequelae. Patients and Methods: Through retrospective review of 245 cases parotidectomies and follow up for more than three years, clinicophathologic factors influencing to the selection of surgical procedure were considered to be age, sex, and preoperative pathology confirmed by preoperative MRI and FNA. Results: Five categories were established as follow for surgical decision in parotid tumor surgery. Category 1. Superficial lobe adenoma -- Superficial parotidectomy -- 124 Category 2. Deep lobe adenoma -- Deep parotidectomy -- 39 Category 3. Non pleomorphic adenoma -- Tumorectomy 1.5cm adenoma in young female -- Tumorectomy -- 25 Category 4. Recurrent multicentric tumor -- Parotidectomy+RT -- 9 Category 5. Parotid cancer; Parotidectomy + UND (RND) + RT -- 48 ; CORE (Composite Regional Ear Resection) -- 2 Conclusion: Surgical morbidity and recurrence rate could be minimized by individualizing the surgical procedure according to the category principle based on the clincopathologic features.

A Study on the Restoration of Men's Headgear - focusing on hats - (남자(男子) 헤드기어(headgear) 제작(製作)에 관(關)한 연구(硏究) - 햇(hats)을 중심(中心)으로 -)

  • Kim, Kyung-Hee;Mun, Yun-Kyeong
    • Journal of Fashion Business
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    • v.8 no.2
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    • pp.116-125
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    • 2004
  • In the history of western costume, women's hairstyle and headdress have been fluently studied but men's headgear has not. To study and manufacture headgear designs and details, which indicate varieties in forms and ornaments, can be utilized for the fashion currently in vogue. Purpose: the purpose of the study is to investigate one of the headgear, the hat in terms of shift in design and manufacturing method, and to study through manufacturing in order to do a literature review by era and to provide information as the source in new design. Study method and scope: Like previously manufactured and presented bonnet of women's headdress or headgear, the hat in the study was manufactured on the basis of literature review and portrait analysis. Target era is from the late 16th century to the early 17th century when the hat was used. The hat to be manufactured was selected by investigating the details such as hair style and hat features using literature. The pattern of the selected hat was analyzed, and velvet, silk, and wool were used as the materials as in the literature. Ornaments used similar things as in the photos.

Studies on the Biological Activity of Synbiotics: A Review (신바이오틱스의 생리활성에 관한 연구 고찰)

  • Yoon, Jin A;Shin, Kyung-Ok
    • The Korean Journal of Food And Nutrition
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    • v.31 no.3
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    • pp.319-327
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    • 2018
  • This paper defines the common features of synbiotics based on the definition of probiotics and prebiotics, and reviews the effectiveness of synbiotic food. The concept of synbiotics is defined as 'a mixture of prebiotics and probiotics that have a beneficial effect on the host, as a dietary supplement that alters living organisms in the gastrointestinal tract and improves their survival.' Synbiotic food contains ingredients with beneficial microbes that are expected to improve interactions between microbial and useful substances. Synbiotic foods may have anti-cancer and immune system-boosting effects. Improved digestion, healthier bowel movements, and overall increased intestinal health has been reported were reported after increasing the healthy microorganisms within the intestinal tract. In addition, depending on the type of food containing the symbiotic ingredients, more consistent weight control, improvement of cardiovascular health, and lower blood glucose levels may also be expected. Unlike previous studies, this review of synbiotics has shown that it is necessary for synergistic effects to take place among microorganisms and components to be further studied. Further research is needed on the safety and ingestion of microorganisms contained in synbiotics.

Radiogold Study in Primary Hepatoma and Amebic Liver Abscess: Is Their Distinction Possible? (원발성간암(肝癌)과 아메바성간농양(肝膿瘍)의 진단에 관한 핵의학(核醫學)적 고찰)

  • Bahk, Yong-Whee;Kim, Dong-Jip
    • The Korean Journal of Nuclear Medicine
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    • v.2 no.1
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    • pp.53-58
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    • 1968
  • Both primary hepatoma and amebic liver abscess are probably the most common space-occupying disease of the liver in Korea, and the importance of their accurate distinction can not be overemphasized. Radiogold hepatoscanning has been widely used at St. Mary's Hospital, and recently blood disappearance rate of colloidal $^{198}Au$ has been introduced in the study of hepatic ailments. A review of the literature revealed few previous publications concerning the differential features of the two conditions although some characteristic scan findings of each condition have been described. The present study is aimed at a critical review and analysis of various photoscan findings and blood disappearance rate determinations of colloidal $^{198}Au$ of 34 cases of primary hepatoma and 30 cases of amebic liver abscess. Among many scan manifestations, prominence of the uninvolved liver tissue, "hemispherical cold area," and splenic uptake are much more commonly encountered in primary hepatoma and the blood disappearance rate tends to be far more frequently delayed in primary hepatoma than in abscess providing at least a statistically useful basis of distinction of the two diseases.

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A Review on Chemical-Induced Inflammatory Bowel Disease Models in Rodents

  • Randhawa, Puneet Kaur;Singh, Kavinder;Singh, Nirmal;Jaggi, Amteshwar Singh
    • The Korean Journal of Physiology and Pharmacology
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    • v.18 no.4
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    • pp.279-288
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    • 2014
  • Ulcerative colitis and Crohn's disease are a set of chronic, idiopathic, immunological and relapsing inflammatory disorders of the gastrointestinal tract referred to as inflammatory bowel disorder (IBD). Although the etiological factors involved in the perpetuation of IBD remain uncertain, development of various animal models provides new insights to unveil the onset and the progression of IBD. Various chemical-induced colitis models are widely used on laboratory scale. Furthermore, these models closely mimic morphological, histopathological and symptomatical features of human IBD. Among the chemical-induced colitis models, trinitrobenzene sulfonic acid (TNBS)-induced colitis, oxazolone induced-colitis and dextran sulphate sodium (DSS)-induced colitis models are most widely used. TNBS elicits Th-1 driven immune response, whereas oxazolone predominantly exhibits immune response of Th-2 phenotype. DSS-induced colitis model also induces changes in Th-1/Th-2 cytokine profile. The present review discusses the methodology and rationale of using various chemical-induced colitis models for evaluating the pathogenesis of IBD.