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MB-OFDM UWB용 저지연 리드-솔로몬 복호기 설계에 관한 연구
박한정(Hanjung Park),조언선(Unsun Cho),정윤호(Yunho Jung),김재석(Jaeseok Kim) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11
In this paper, a low latency Reed-Solomon(RS) decoder for MB-OFDM UWB is implemented without increasing hardware overhead by using autoregressive algorithm. By implement of effective Galois multiplier, this paper proposes low area of RS decoder. The proposed RS decoder is synthesized by Xilinx Vertex5 LX330. The latency is 37 clock, and the total equivalent gate count for design is 23k.
박한정 ( Han Jung Park ),성준모 ( Jun Mo Sung ),김무정 ( Moo Jung Kim ),최길순 ( Gil Soon Choi ),신유섭 ( Yoo Seob Shin ),예영민 ( Young Min Ye ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2008 천식 및 알레르기 Vol.28 No.2
Immediate hypersensitivity to raw potato has been presented as one or a combination of wheezing, rhinorrhea, sneezing, contact urticaria and contact dermatitis. We experienced a case of contact urticaria caused by raw potato in a 25-year-old female patient with allergic rhinitis and conjunctivitis. She had experienced itching and generalized urticaria after application of raw potato on her face 10 years earlier. Allergy skin tests showed positive results to common inhalant allergens, including D. pteronyssinus, D. farina, ragweed pollen, mugwort pollen and several kinds of grass pollens, but showed a negative result to raw potato e×tract. However, the provocation test by applying raw potato on her forearm produced an immediate onset of contact urticaria with itching sensation. High serum-specific IgE to raw potato compared to normal healthy controls was detected by ELISA. We first report here in a case of raw potato-induced contact urticaria in Korea, which suggested an IgE-mediated mechanism. (Korean J Asthma Allergy Clin Immunol 2008;28:148-151)
박한정 ( Han Jung Park ),허규영 ( Gyu Young Hur ),김현아 ( Hyun Ah Kim ),예영민 ( Young Min Ye ),서창희 ( Chang Hee Suh ),남동호 ( Dong Ho Nahm ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2007 천식 및 알레르기 Vol.27 No.1
We report a case of a 54-year-old woman with atopy who showed a severe anaphylactic reaction after the ingestion of bee pollens. A few minutes after the ingestion, generalized pruritus, urticaria, periorbital and perioral angioedema, and dyspnea developed, and thus the emergency care including subcutaneous epinephrine and intravenous methylprednisolone was performed. She suffered from seasonal allergic rhinitis for 10 years. Microscopic examination of the bee pollen ingested showed mostly mugwort and ragweed pollen, and several kinds of tree pollens. In vivo and in vitro studies demonstrated that the patient had allergic rhinitis sensitive to mugwort and ragweed pollens and sensitized to some tree pollens as well. This case demonstrated that a severe systemic allergic reaction could occur in a pollen-sensitized patient after the ingestion of bee pollens. (Korean J Asthma Allergy Clin Immunol 2007;27:57-60)
아목시실린에 의한 약물 과민반응 16예의 임상적 특성과 혈청학적 검사의 의의
박한정 ( Han Jung Park ),허규영 ( Gyu Young Hur ),김현아 ( Hyoun Ah Kim ),최길순 ( Gil Soon Choi ),최성진 ( Sung Jin Choi ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2007 천식 및 알레르기 Vol.27 No.3
Background: Amoxicillin is one of the broad spectrum antibiotics and is widely used in the treatment of various infective diseases. There are various forms of amoxicillin-induced hypersensitivity reactions including urticaria/angioedema, erythema multiforme and anaphylaxis. Objective: To observe the clinical features and evaluate the significance of in vitro testing of amoxicilin-induced hypersensitivity reactions. Method: We retrospectively reviewed medical records of patients diagnosed as having amoxicillin-induced hypersensitivity reactions from January 2002 to February 2007. Serum-specifc IgE antiboides to ampicilloyl (AMP) and amoxicilloyl (AXO) were determined using the immunoCAP Result: Sixteen subjects were enrolled in this study. Clinical features of amoxicillin-induced hypersensitivity reactions included erythema multiforme (n=6, 37.5%), urticaria/angioedema (n=4, 25.0%), anaphylaxis (n=3, 18.8%), maculopapular skin eruption (n=2, 12.5%) and fixed-drug eruptions (n=1, 6.3%). Six subjects had a high serum specific IgE to AMP and all anaphylaxis patients had a high serum specific IgE to AXO and/or AMP. Conclusion: These findings suggest that amoxicillin could induce various cutaneous manifestations in which the most common ones are erythema multiforme and urticaria/ angioedema. The serious reactions of anaphylaxis were noted in 18.8% of subjects in which IgE mediated responses to 2 antigenic determinants were involved. (Korean J Asthma Allergy Clin Immunol 2007;27:162-167)
박한정 ( Han Jung Park ),성준모 ( Jun Mo Sung ),김무정 ( Moo Jung Kim ),최길순 ( Gil Soon Choi ),예영민 ( Young Min Ye ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2009 천식 및 알레르기 Vol.29 No.1
Heparin is used for thromboprophylaxis in patients on hemodialysis, hemofiltration or continuous renal replacement therapies. Heparin-related immediate-type hypersensitivity reactions such as urticaria, angioedema or bronchospasm are very rare, and only a few cases of anaphylaxis-like responses have been described. We experienced the case of a 67-year-old female patient with an end-stage renal disease who presented generalized urticaria induced by heparin during hemodialysis. She began to experience recurrent itching and generalized urticaria after 2 weeks of the initiation of hemodialysis. The episodes started within 30 minutes of hemodialysis with heparin infusion; either sodium heparin or dalteparin (low molecular weight heparin) was used. Utilization of different dialyzers was unable to avoid the episodes, and these symptoms could be reduced when she was treated with heparin-free hemodialysis. She had no previous history of allergic diseases. In order to confirm the causative agent, we measured serum specific IgE antibodies against ethylene oxide, latex and formaldehyde using immunoCAP (Phadia, Sweden) and obtained negative results. Although skin prick tests and intradermal tests to the used heparin showed negative results, the intravenous provocation test using 1,500 U of heparin (with a bolus-loading dose of 1,000 U and a continuous intravenous infusion of 500 U for 3 hours) reproduced an immediate-onset generalized urticaria with itching sensation. We report herein a case of heparin-induced urticaria during hemodialysis in Korea. Because of increasing use of heparin in medical practice, physicians should be aware of possible immediate hypersensitivity reactions to this medication. (Korean J Asthma Allergy Clin Immunol 2009;29:69-73)
호산구증가증 환자에서 Toxocara canis에 대한 특이 IgE 항체의 진단적 의의
박한정 ( Han Jung Park ),최성진 ( Sung Jin Choi ),김현미 ( Hyun Mi Kim ),최길순 ( Gil Soon Choi ),성준모 ( Jun Mo Sung ),이진우 ( Jin Woo Lee ),예영민 ( Young Min Ye ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2009 천식 및 알레르기 Vol.29 No.2
Background: Toxocariasis is one of the major causes of peripheral eosinophilia and it provokes eosinophilic infiltration in the internal organs. Diagnosis of toxocariasis has relied mainly on the immunological methods including measurement of serum specific IgG to Toxocara canis excretory-secretory antigen (TES-Ag) in which the detection rate by ELISA was 68% in patients with eosinophilia. Objective: The aim of this study is to measure serum specific antibodies to TES-Ag in patients with peripheral eosinophilia in order to evaluate the clinical significance. Method: Twenty-one patients with peripheral eosinohilia (>500 cells/uL or >10% of total white blood cell count), who have no identifiable cause of eosinophilia such as drugs, well known parasite infection, malignancy or allergic diseases, were enrolled. Serum specific IgE, IgG1 and IgG4 antibodies to TES-Ag were determined by ELISA (Phadia, Uppsala, Sweden) which were compared to those of specific IgE by immunoCAP system (Phadia), and specific IgG to TES-Ag by ELISA (Bordier). Serum total IgE and ECP levels were measured by immunoCAP system. Result: The detection rate of serum specific IgE by ELISA was the highest (90.5%) followed by serum specific IgG1 (65%) and IgG4 (75%). Concordance rate of specific IgE by ELISA and immunoCAP was 100%, while that between specific IgE by ELISA (home-made) and specific IgG by ELISA (Bordier) was 60%. The most commonly involved organ was liver (57.1%). Serum total IgE level in patients with liver involvement was significantly higher than those without it (P<0.01). Conclusion: Toxocariasis should be considered as one of the major causes of the patients with eosinophilia in this country. Measurement of serum specific IgE to TES-Ag may be useful to evaluate the Toxocara canis infection. (Korean J Asthma Allergy Clin Immunol 2009;29:105-111)
Isocyanate 에 의한 직업성천식 환자에서 흡입성 항원에 대한 신감작의 발생률 및 예후에 미치는 영향
박한정 ( Han Jung Park ),김현아 ( Hyun Ah Kim ),허규영 ( Gyu Young Hur ),예영민 ( Young Min Ye ),서창희 ( Chang Hee Suh ),남동호 ( Dong Ho Nahm ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2006 천식 및 알레르기 Vol.26 No.3
Background: It has been reported that half of toluene diisocyanate (TDI)-induced asthma patients had persistent asthmatic symptoms even after complete avoidance. We hypothesized that new sensitization to common inhalant allergens may contribute to persistent and aggravation of asthmatic symptoms. Objective: The aim of this study is to investigate the prevalence and clinical significance of new sensitization to common inhalant allergens in patients with TDI-induced asthma. Method: Thirty-six TDI-induced asthma patients who had been followed up for more than three years were enrolled. They were classified into two groups, newly-sensitized and not-sensitized groups, according to the results of the skin-prick test and serum specific IgE antibodies to common inhalant allergens monitored every year. The clinical features, drug requirements for systemic steroids, and airway hyper responsiveness were compared between the two groups. Result: Thirteen (36.1%) of 36 patients with TDI-asthma developed new sensitization to common inhalant allergens during the follow-up periods. The mean onset time were 4.93±2.49 years. The prevalence of atopic status and allergic rhinitis tended to be higher in the newly sensitized group. The duration of asthmatic symptoms before the diagnosis was significantly longer in the newly sensitized group (P<0.05). The drug requirements for systemic steroids tended to increase after the new sensitization in the newly sensitized group. Conclusion: The development of new sensitization to common inhalant allergen in TDI-asthma may be associated with chronic persistent asthmatic symptoms. New sensitization to common inhalant allergens should be monitored regularly in TDI-induced asthmatic patients. (Korean J Asthma Allergy Clin Immunol 2006;26:213-218)