• Title/Summary/Keyword: infection process

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An Identification Technique Based on Adaptive Radial Basis Function Network for an Electronic Odor Sensing System

  • Byun, Hyung-Gi
    • Journal of Sensor Science and Technology
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    • v.20 no.3
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    • pp.151-155
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    • 2011
  • A variety of pattern recognition algorithms including neural networks may be applicable to the identification of odors. In this paper, an identification technique for an electronic odor sensing system applicable to wound state monitoring is presented. The performance of the radial basis function(RBF) network is highly dependent on the choice of centers and widths in basis function. For the fine tuning of centers and widths, those parameters are initialized by an ill-conditioned genetic fuzzy c-means algorithm, and the distribution of input patterns in the very first stage, the stochastic gradient(SG), is adapted. The adaptive RBF network with singular value decomposition(SVD), which provides additional adaptation capabilities to the RBF network, is used to process data from array-based gas sensors for early detection of wound infection in burn patients. The primary results indicate that infected patients can be distinguished from uninfected patients.

Immunosuppressive Activity of Simazine (Simazine의 면역억제작용)

  • 김경란;조대현;표석능
    • Biomolecules & Therapeutics
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    • v.7 no.2
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    • pp.127-132
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    • 1999
  • Triazine herbicide has been reported to directly suppress the immune response. In the present study, the effect of simazine on the immune response was investigated. Splenic lymphocytes were treated withmitogen (lipopolysaccaride, concanavalin A) in the presence of simazine. When simazine(300 mg/kg, 600 mg/kg) was administrated every day for 3 weeks or 4 weeks, respectively, the number of plaque forming cells (PFC) was decreased. Antibody production of IgM and IgG class was significantly decreased in splenic cells from simazine-treated animals. In addition, when animals were exposed to simazine, the susceptibility of virus infection as well as the growth of tumor cells was increased. These data suggest that simazine affected the immune function and humoral immunity impaired by simazine treatment contributed to pathological process.

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Histologic Change of Free Muscle Graft in the Rabbit Pleural Space (토끼에서 늑막강내 자유근육이식의 조직학적 변화: 술후 공기누출방지를 위한 자유근육이식술의 예비실험)

  • 원용순
    • Journal of Chest Surgery
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    • v.22 no.1
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    • pp.10-15
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    • 1989
  • Excision of bullous emphysema or decortication of chronic empyema commonly results in a prolonged air leakage. Prolonged air leakage requires prolonged intercostal drainage, delays recovery, and can be followed complications such as pneumothorax, atelectasis, incomplete expansion of remained lung, secondary infection. To minimize these complications free muscle grafts can be used like a patch to close the opening of visceral pleura and reinforce suture lines without undue tension. From a preliminary study using the latissimus dorsi muscle as a free muscle graft in the rabbit pleural space, viable muscle fibers that seems the result of the process of regeneration can be consistently identified around the degenerating muscle fibers. Voluminous connective tissues and numerous blood vessels are also observed in the peripheral zone. Further studies in that free muscle graft will be sutured with visceral pleura and lung parenchyme will hopefully provide additional information before clinical application.

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CASE REPORTS ON LASER FRENECTOMY (LASER를 이용한 FRENECTOMY)

  • Kim, Yong-Cheol;Kim, Jong-Soo;Kim, Yong-Kee
    • Journal of the korean academy of Pediatric Dentistry
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    • v.23 no.3
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    • pp.609-614
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    • 1996
  • Laser is getting more attention from increasing numbers of dental clinicians by its own several unique characteristics : precision, hemostasis, and bactericidal capacity. It also provides patients with several advantages of minimal tissue damage. faster healing with less postoperative pain and minimal use of local anesthetics. Labial or lingual frenectomies were performed successfully in three pediatric patients using Nd-YAG laser. When compared to the conventional scalpel method, less local anesthetics were needed and the bleeding control was so excellent that any suture was not necessary. The operation sites were completely healed without any infection or complication and discomfort from swelling or pain was not noted in all cases throughout the healing process.

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Morphological and Ecological Observations on Myocoptes musculinus Koch 1844(Sarcoptiformes; Listrophoridae) Collected from Mus musculus alba (흰생쥐에서 분리(分離)된 쥐 모식응애 (Myocoptes musculinus)에 관(關)한 형태(形態) 및 생태관찰(生態觀察))

  • Kang, Yung-bai
    • Korean Journal of Veterinary Research
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    • v.27 no.1
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    • pp.77-83
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    • 1987
  • For the development of the specific pathogen free (SPF) or germ free laboratory animals, a parasitological approach was applied to the preliminarily selected laboratory albino mice (Mus musculus alba) in order to observe the ectoparasites on the hair of the host animal. The mites collected from the laboratory albino mice were identified as Myocoptes musculinus and classified into the Family Listrophoridae, Suborder Sarcoptiformes, Order Acarina. The overall infection rate of the mites was revealed as high as 73.2% (52 out of 71 heads) and the development process from the eggs to larvae was observed for the understanding of the basic ecological properties.

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Inhibitory effect of chitosan oligosaccharides on the growth of tumor cells

  • Kim, Se-Kwon;Nam, Mi-Young;Nam, Kyung-Soo
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.416-417
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    • 2000
  • Chitin, a poly $\beta$-(1longrightarrow14)-N-acetyl-D-glucosamine, is best known as a cell wall component of fungi and as a skeletal materials of invertebrates. Chitosan is derived from chitin by deacetylation in the presence of alkali. Chitosan has been developed as new physiological materials since it possesses antibacterial activity, hypocholesterolemic activity and antihypertensive action. However, the actions of chitosan in vivo still remain ambiguous as the physiological functional properties because most animal intestines, especially the human gastrointestinal tract, do not possess enzyme such as chitosanase which directly degrade the $\beta$-glucosidic linkage in chitosan, and consequently the unbroken polymers may be poorly absorbed into the human intestine. Therefore, recent studies as chitosan have attracted interest for chitosan oligosaccharides, because the oligosaccharides process not only water-soluble property but also versatile functional properties such as antitumor activity, immune-enhancing effects, enhancement of protective effects against infection with some pathogens in mice and antimicrobial activity (Kingsnorth et al., 1983, Mori et al., 1997). (omitted)

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Ginseng, the natural effectual antiviral: Protective effects of Korean Red Ginseng against viral infection

  • Im, Kyungtaek;Kim, Jisu;Min, Hyeyoung
    • Journal of Ginseng Research
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    • v.40 no.4
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    • pp.309-314
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    • 2016
  • Korean Red Ginseng (KRG) is a heat-processed ginseng developed by the repeated steaming and air-drying of fresh ginseng. Compared with fresh ginseng, KRG has been shown to possess greater pharmacological activities and stability because of changes that occur in its chemical constituents during the steaming process. In addition to anticancer, anti-inflammatory, and immune-modulatory activities, KRG and its purified components have also been shown to possess protective effects against microbial infections. Here, we summarize the current knowledge on the properties of KRG and its components on infections with human pathogenic viruses such as respiratory syncytial virus, rhinovirus, influenza virus, human immunodeficiency virus, human herpes virus, hepatitis virus, norovirus, rotavirus, enterovirus, and coxsackievirus. Additionally, the therapeutic potential of KRG as an antiviral and vaccine adjuvant is discussed.

Descending Necrotizing Mediastinitis (하행 괴사성 종격동염)

  • Shin, Hwa-Kyun;Won, Yong-Soon;Youm, Wook
    • Korean Journal of Bronchoesophagology
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    • v.8 no.1
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    • pp.71-74
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    • 2002
  • A 44-year-old man was admitted to our hospital because of high fever, neck swelling, and dyspnea. He was diagnosed as descending necrotizing mediastinitis (DNM) extended from oropharyngeal infection. Descending necrotizing mediastinitis(DNM) is a lethal process originating from odontogenic. oropharyngeal, or cervical infections that descends along the fascial planes into the mediastinum. DNM is relatively rare, but it is lethal disease with high mortality. Immediate and sufficient mediastinal drainage is indispensable for the disease. The principles of the surgical approach for DNM are discussed, with a brief review of the literature following these case reports.

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A case of incisional falciform ligament hernia in a bitch (개에서 절개성 겸상인대 허니아 발생례)

  • 정순욱;박인철;정월순;강병규
    • Journal of Veterinary Clinics
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    • v.14 no.2
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    • pp.352-356
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    • 1997
  • 5 years Poodle was referred to the Veterinary Teaching Hospital, Chonnam National University in January 1997, with progressive swelling on the rear xiphoid process after cesarean section last year in local-vet clinic. Physical, radiographic, ultrasonographic and intraoperative findings that were obtained from this case were as follow; Physical findings were known as no pain, no fever in the hernia] sal at palpation. Radiographic findings revealed the decreased density of swelling contents more than peritoneum and did not identify the abdominal wall defect line. Ultrasonographic findings showed abdominal wall defect line of 3mm and intra-abdominal originated fat contents with mixed echo(hypoechoic). During the operation, falciform ligament into the hernial sac was observed and not excised, manipulated back into the cavity. The dog was given an herniorraphy with no recurrence and infection.

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MAXILLOFACIAL INFECTIONS MASQUERADING AS MALIGNANT TUMOR ; CASE REPORTS (악성종양과 감별이 어려웠던 악안면 영역의 감염질환에 대한 치험례)

  • Seo, Jae-Hoon;Yeo, Hwan-Ho;Kim, Young-Kyun
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.17 no.3
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    • pp.302-308
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    • 1995
  • It is very difficult to differentiate the malignant tumor from the maxillofacial infections that have unclear cause, severe indurated swelling, pain and nonresponsiveness to antibioitic treatment and incision and drainage. Incisional biopsy, CT, and MRI examination may not distinguish between infection and a malignant tumors. And then, the clinicians can make a mistake that they perform a unnecessary radical surgery because of inaccurate diagnosis. We present three case reports of maxillofacial infectious disease with diagnosis process, treatment and differential diagnosis. The infectious disease were not resolved with antibiotic and surgical drainage. The progression of clinical sign and radiographic, indings of these disease were masqueraded as malignant tumors.

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