고혈압 환자에서 Esmolol 의 지속적 정주가 후두경하 기관내 삽관에 따른 혈역학적 변동에 미치는 영향

김남중,장성호,공명훈 대한마취과학회 1994 Korean Journal of Anesthesiology Vol.27 No.10

Laryngoscopy and endotracheal intubation are potent stimuli that increase heart rate and blood pressure. These transient stress responses are probably not harmful in healthy individuals. However hypertensive patients are more prone to have significant increase in heart rate and blood pressure whether they have been treated beforehand or not and these responses also can lead to fstal complications. A randomized double-blind study was csrried out on 40 ASA physical status II-III adult elective surgical patients with hypertension to assess the effects of continuous intravenous infusion of esmolol, ultrashortacting cardioselective beta blocker, on hemodynamic responses to laryngoscopy and endotracheal intubation. Patients received a continuous infusion of esmolol(500mcg/kg/min for 1 minute, followed by 200mcg/kg/min for 12minutes) or an equal volume of saline before and throughout the induction periods of anesthesia. Using noninvasive automatic blood pressure monitor, blood pressure( systolic, diastolic and mean arterial pressure) and heart rate were measured at 6 points: 1) as the control value, on arrival to operating room, 2) just after IV loading dose of saline or esmolol, 3) just after IV thiopental, 4) 1 minute after intuhation, 5) 3 minutes after intubation, and 6) 5 minutes after intubation. The rate-pressure product was calculated in each time. During this study, anesthesia was maintained with enflursne-N2O-O2 vecuronium and controlled ventilstion. In patients given esmolol, systolic pressure, diasolic pressure, mean arterial pressure, heart rate, and rate pressure product at 1 minute, 3 minutes, 5 minutes after intubation were less increased than control group. And the heart rste response was more effectively blunted than the blood pressure response. The continuous infusion of esmolol can blunt hemodynamic changes caused by laryngoscopy and endotracheal intubation in hypertensive patients, yet it is needed to find out the optimal dosage of esmolol for complete blocking of the sympathetic response without the adverse effects.

고정성 분할 브릿지의 연결 어태치먼트

김남중 대한치과기공학회 2002 대한치과기공학회지 Vol.24 No.1

There are some cases that dental prosthesis does not operate as properly as expected in oral mouth. The reasonsare such as a distortion of the mandibular, a fault of impression taking system or an extrusion of remaining teeth.One of dental prostheses to consider in the situations is the attachment which connects segment bridge. Active discussions are managed on theoretical side of this field but few on clinical side of it, which must beconsidered first. Accordingly I'd like to suggest a theoretical background for connect attachment of fixedsegmented bridge.1. As a bridge gets longer, burden on dental ligament is increased and the hardness of a bridge is lessened.2. The flexibility of a bridge increases in ratio to 3 multiplication of the length and decreases in ratio to 3multiplication of the width of occlusal surface and base of pontic.3. Precision rest is needed to cope with the shake of teeth and the difference of axis direction among abutments.4. Female part of the precision rest should be on middle abutment distal and male one on mesial of pontic. 5. Segmented attachment can be efficiently used to cope with long span bridgework and also in case that onepiece casting can't be done because of slant of abutment.

Cavo 교환기와 Mounting Zig를 이용한 모형부착과 Bridge제작

김남중,황경숙 대한치과기공학회 2005 대한치과기공학회지 Vol.27 No.1

일본어 신조어 생성에 관한 일고찰-인터넷의 발달이 미친 영향을 중심으로

김남중,이경규 한국일본근대학회 2012 일본근대학연구 Vol.0 No.37

본고는 인터넷의 발달로 인해 생겨난 일본어 신조어 생성에 대해 웹사이트를 중심으로 그 특징을 고찰한 것이며, 그 결과는 다음과 같다. (1) 인터넷 신조어는 여러 법칙에 의해서 생겨나고 파생되는데 그 법칙은 컴퓨터의 일반화와 인터넷의 보급이라는 사회적 요인에 의해서 비롯되는 것을 알 수 있었다. (2) 이러한 신조어는 인터넷의 발달로 인해 빠른 의사소통, 정보전달을 위해 주로 청소년과 누리꾼들이 만들어낸 것으로 인터넷의 사용이 많지 않은 중장년층과의 소통이 점차 어려워지는 것은 당연하며 그럼에도 불구하고 계속해서 신조어가 만들어지는 이유는 사회에 대한 불만, 그 사회를 지탱하고 있는 기성세대에 대한 불만으로부터의 심리적 요인이 있다고 생각된다. (3) 사회문화가 변화, 발전함에 따라서 단순히 KY식 일본어나 축약과 생략 위주의 조어법뿐만 아니라 더욱 다양한 신조어가 나타나고 있음을 알 수 있었다. (4) 인터넷의 발달로 인해 정보의 공유가 더욱 간편해져 소수 집단에 의해 만들어진 신조어가 빠른 속도로 확산되어 유행어로 발달되고 있음을 확인할 수 있었다. (5) 네트워크의 발전으로 인해 보다 빨리 변화에 적응해야 한다는 강박관념이나 정치적, 경제적인 이유로 인해서 많은 신조어가 탄생하고 있음을 알 수 있었다. (6) 인터넷에서는 익명성이 보장됨에 따라 소속감이나 책임감으로부터 벗어나 자유롭게 의사소통이 가능하기 때문에 인터넷 신조어에는 부정적 이미지를 가진 신조어가 많음을 확인할 수 있었다. This research explored characteristic patterns emerging from Japanese neologisms being created as the Internet continues to develop and evolve itself, by looking into websites. Its results are as follows: [1] Internet neologisms tended to be formed and developed according to a wide range of principles or rules that were derived primarily from “social factors”, such as i.e. the popularization of computer and the ensuing wide spread of the Internet. [2] These neologisms were created mainly by teenagers and “netizens (nuri‐kun)” for the increased need of even faster (and more effective) communications and delivery of information as a result of the incessant development and evolution of the Internet. Hence, it is highly noticeable and to a certain extent natural that they led to worsening further the younger generations’ communicational difficulties with the middle‐aged less familiar with and exposed to the Internet than the former. Nonetheless, the reason why the neologisms continue to be produced lies largely in psychological factors derived from complains about society, especially those made by the older generations still remaining as vital constituents in society. [3] Not merely “KY‐style” Japanese and contraction / omission‐centered word formation but more diverse neologisms were generated, as society and culture continued to develop and change. [4] The further increase in the information sharablility through the development of the Internet enabled neologisms invented by minority groups to be spread and diffused even more rapidly, only to become fad words. [5] The reason behind the creation of neologisms lied in either (a) a sense of obsession with having to catch up with and to get accustomed to new changes that grows amongst those living in contemporary society as a result of the development of networks or (b) other political and economic grounds. [6] The Internet’s capabilities of guaranteeing the anonymity of its users enable people to communicate more freely by relieving themselves from such psychological pressures as sense of responsibility and belonging / allegiance to certain communities (both online and offline). Hence, most of Internet neologisms created tended to imply negative meanings.

포틀랜드시멘트 클린커의 색(COLOR)에 관한 연구

김남중,민경소,정호수 한국시멘트협회 2000 시멘트 심포지움 Vol.27 No.-

생물테러

김남중 주식회사 녹십자 2003 녹십자의보 Vol.31 No.6

치과 환자의 만족도에 영향을 미치는 요인 - 치과의원에서 기공실의 개설여부에 따라 -

김남중,황경숙 대한치과기공학회 2000 대한치과기공학회지 Vol.22 No.1

청아치과병원 교정과에 내원한 환자의 분포와 부정교합의 유형

김남중,이청재 대한치과기공학회 2007 대한치과기공학회지 Vol.29 No.2

With the development of orthodontics and increasing concerns on physical appearance, the number of patients has been steadily increasing. It is quite important not only to make effective cure plans and accurate diagnoses but also to have a thorough grasp of patients’ malocclusion types and their occurrence frequency, in addition to patients' personality in order to cure the patients appropriately. This study is based on 946 malocclusion patients who had visited Chong-A Dental Hospital from 1999 to 2004 and investigated their aspects of malocclusion and characteristics of their gender, age and residence. The results are as follows. 1. The number of patients per year had been decreased until 2001, after which year the number had fluctuated. The number was the largest in 1999, 169 and the smallest in 2001, 140. Female occupied 68.0% of the total, twice as many as male, 32.0%) 2. Based on the Angle’s classification, 19 or over year - old group was the largest of the total, 59.3% and 6 or younger year - old group, the smallest, 0.5%. The 19 or over year old group was less than a half of the total (47.4%) in 2003 and there were no patients who belonged to the 6 or younger year - old group in 2003 and 2004. 3. Distributions on the types of malocclusion have shown that 39.9 % of the total are in the Class I, the largest, 31.0% in the Class and 29.2 in the Class , the smallest. 1) The number of the ClassI was 73, the largest, that of the Class being 35, the smallest in 1999. On the whole, the number of the Class accounted for the largest part of the total. 2) The number of male patients in the Class was the smallest, generally being the largest in the Class . In case of female, that of the Class was the smallest. 3) Based on the age, the Class was the highest in between 7 and 13 age group, the Class the lowest. The Class occupied the largest around 40%. 4) In the shape of physiognomy, the meso occupied the largest part among all the Class, of which the Class was the highest, 64.2%. The bracy was the largest in the Class , and the dolicho in the Class. 5) In the profile, the convex shape was the largest in the Class and , and especially in the Class , over 3/4 of the total, 75.4%. In contrast, the direct shape was the largest in the Class and the sunken shape occupied 33.3%, which was nearly ten times more than the case of the Class and. 6) In the asymmetry of physiognomy, the number of patients of the Class was the largest, 34.1% and that of the Class , the smallest, 19.5%. It was found that about one fourth of the malocclusion patients were under the asymmetry of physiognomy. 4. In the distribution of patients’ residence, 81.4% were from the Seoul Metropolis and 48.2% from Gangnam-Gu where Chong-A Dental Hospital is located and Seocho-Gu and Songpa-Gu which are adjacent to Gangnam-Gu.

전기로 더스트 치환율에 따른 콘크리트 특성에 관한 실험적 연구 ( An Experimental Study on Properties of Concrete by Replacement Rate of Electric Arc Steelmaking Flue Dust )

김남중,김광서 대한건축학회 2001 大韓建築學會論文集 : 構造系 Vol.17 No.11

An Experimental Study on the Microhardness of 4 Kinds of Direct Composite Resins

김남중 대한예방치과학회 2017 International Journal of Clinical Preventive Denti Vol.13 No.4

Objective: The objective of this study is to compare the microhardness of various direct composite resins. Methods: The authors performed experiments on the microhardness of direct composite resins after polymerizing 4 kinds of direct composite resins on the medio-occluso-distal cavity (MOD) standard specimens. Results: The microhardness of Z350 was the highest (p<0.05). According to post-hoc study with Turkey honest significant difference by multiple comparison on microhardness test results, there were statistically significant differences between all kinds of direct composite resin. The microhardness of the direct composite resin past the expiration date was the lowest. Conclusion: Z350 scored the highest concerning the microhardness, and there was a statistically valid difference from the direct composite resin past its expiration date.