• Title/Summary/Keyword: Rapid methods

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Advances in Rapid Detection Methods for Foodborne Pathogens

  • Zhao, Xihong;Lin, Chii-Wann;Wang, Jun;Oh, Deog Hwan
    • Journal of Microbiology and Biotechnology
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    • v.24 no.3
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    • pp.297-312
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    • 2014
  • Food safety is increasingly becoming an important public health issue, as foodborne diseases present a widespread and growing public health problem in both developed and developing countries. The rapid and precise monitoring and detection of foodborne pathogens are some of the most effective ways to control and prevent human foodborne infections. Traditional microbiological detection and identification methods for foodborne pathogens are well known to be time consuming and laborious as they are increasingly being perceived as insufficient to meet the demands of rapid food testing. Recently, various kinds of rapid detection, identification, and monitoring methods have been developed for foodborne pathogens, including nucleic-acid-based methods, immunological methods, and biosensor-based methods, etc. This article reviews the principles, characteristics, and applications of recent rapid detection methods for foodborne pathogens.

Rapid Detection Methods for Agro-Food Safety

  • Kim, Gi-Young
    • 한국환경농학회:학술대회논문집
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    • 2009.07a
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    • pp.157-168
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    • 2009
  • Frequent outbreaks of foodborne illness have been increasing the awareness of agro-food safety. Conventional methods for pathogen detection and identification are labor.intensive and take days to complete. The increasing use of rapid food safety testing is receiving more and more attention. The major reason for this trend is that the food industry requires quick and accurate results. The rapid detection of contaminants in food is critical for ensuring the safety of consumers. Recent advances in technology make detection and identification faster, more sensitive and more specific than traditional method. In this paper, technology trends and recent developments in rapid methods for agro-food safety are discussed.

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Consistency of the rapid assessment method for reinforced concrete buildings

  • Isik, Ercan
    • Earthquakes and Structures
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    • v.11 no.5
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    • pp.873-885
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    • 2016
  • Determination of earthquake-safety of existing buildings requires a rather long and challenging process both in terms of time and expertise. In order to prevent such a tedious process, rather rapid methods for evaluating buildings were developed. The purpose of these rapid methods is to determine the buildings that have priority in terms of risk and accordingly to minimize the number of buildings to be inspected. In these rapid evaluation methods detailed information and inspection are not required. Among these methods the Canadian Seismic scanning method and the first stage evaluation method included in the principles concerning the determination of risk-bearing buildings promulgated by the Ministry of Environment and Urbanization in Turkey are used in the present study. Within the scope of this study, six reinforced concrete buildings damaged in Van earthquakes in Turkey are selected. The performance scores of these buildings are calculated separately with the mentioned two methods, and then compared. The purpose of the study is to provide information on these two methods and to set forth the relation they have between them in order to manifest the international validity.

The Effect of Various Molding Methods for Precision Optical Products Using Birefringence Analysis (정밀 광학부품의 복굴절 분석을 통한 각종 성형법의 영향에 관한 연구)

  • Min, I.K.;Cho, S.W.;Yoon, K.H.
    • Transactions of Materials Processing
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    • v.22 no.1
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    • pp.48-53
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    • 2013
  • As the adoption of injection molding technology increases, injected-molded optical products require higher dimensional accuracy and optical stability than ever before. In the present study, four kinds of molding methods, i.e., conventional injection molding (CIM), injection/compression molding (ICM), rapid heat and cooling the mold(RHCM) and rapid injection/compression molding (RICM) were selected in order to investigate the optical anisotropy of a 7 inch Light Guide Plate(LGP) by examining the gap-wise distribution of birefringence and the extinction angle. The results indicate that the compression process can decrease flow-induced birefringence over the whole region and that rapid heating can decrease the birefringence level better than conventional molding. In addition, for the combination of compression and rapid heating a reversal flow was detected from the distribution of the extinction angle near the gate.

A STUDY ON THE DIMENSIONAL ACCURACY OF MODELS USING 3-DIMENSIONAL COMPUTER TOMOGRAPHY AND 2 RAPID PROTOTYPING METHODS

  • Cho Lee-Ra;Park Chan-Jin;Park In-Woo
    • The Journal of Korean Academy of Prosthodontics
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    • v.39 no.6
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    • pp.633-640
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    • 2001
  • Statement of problem. Relatively low success rate of root analogue implant system was supposed to be due to the time duration between extraction and implant installation. The use of three-dimensional computer tomography and the reconstruction of objects using rapid prototyping methods would be helpful to shorten this time. Purpose. This aim of this study was to evaluate the application possibility of the 3-dimensional computer tomography and the rapid prototyping to root analogue implants. Material and methods. Ten single rooted teeth were prepared. Width and height of the teeth were measured by the marking points. This was followed by CT scanning, data conversion and rapid prototyping model fabrication. 2 methods were used; fused deposition modelling and stereolithography. Same width and height of this models were measured and compared to the original tooth. Results. Fused deposition modelling showed an enlarged width and reduced height. The stereolithography showed more exact data compared with the fused deposition modelling. Smaller standard deviation were recorded in the stereolithographic method. Overall width error from tooth to rapid prototyping was 7.15% in fused deposition modelling and 0.2% in stereolithography. Overall height showed the tendency of reducing dimensions. Conclusion. From the results of this study, stereolithography seems to be very predictable method of fabricating root analogue implant.

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A study on the development of rapid prototyping system using 5 axis machining (5축 가공을 이용한 쾌속조형 시스템의 개발)

  • 정태성;양민양
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.1011-1014
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    • 2002
  • In order to reduce the lead-time and cost, many useful methods have been applied to Rapid Prototyping (RP) in recent years. But cutting process is still considered as one of the effective RP methods that have been developed and currently available in the industry. It also owen practical advantages such as precision and versatility. However, traditional 3 axis NC machining has some inherent limitations such as the restriction of tool accessibility and the complex setup. In this work, a new rapid prototyping system with high speed 5 axis machining has been developed to overcome those limitations. The architecture of developed system is described in detail and the successful application examples are presented.

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Analytical Study on Traditional Rapid-brew Alcoholic Beverages of Three Days or More I. About Brewing from Regular Rice (삼일주와 삼일 기이내로 빚어지는 우리나라의 속성주 I. 쌀로 빛은 속성주)

  • 전정일;신민자;최영진;김현숙;이혜정;정재홍;백숙은
    • Journal of the East Asian Society of Dietary Life
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    • v.9 no.3
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    • pp.267-276
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    • 1999
  • This study was carried out to understand the brewing and processing methods of rapid-brew alcoholic beverages. In the contents of 45 classical records, there were 68 items about rapid-brew alcoholic beverages. and single and double-brew alcoholic beverages. Those alcoholic beverages. of the 68 items studied, were made iron green grown at that time-rice, glutinous rice, regular rice. Selected 38 items among those brew, alcoholics glution rice, were distributed into 34 patterns. Four patterns, grounded on rapid-brewing and processing methods, were set one thing to another and analyzed.

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Analytical Study on Traditional Rapid-brew Alcoholic Beverages of Three Days or More II. About Brewing from Glutinous Rice (삼일주와 삼일 기이내로 빚어지는 우리나라의 속성주 II. 참쌀로 빛은 속성주)

  • 전정일;신민자;최영진;김현숙;이혜정;정재홍;백숙은
    • Journal of the East Asian Society of Dietary Life
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    • v.9 no.3
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    • pp.277-288
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    • 1999
  • This study was carried out to understand the brewing and processing methods of rapid-brew alcoholic beverage. In the contents of 45 classical records, there were 68 items about rapid-brew alcoholic beverage and sin91e and double brew alcoholic beverage. Those alcoholic beverage of 68 items above, were made from green grown at that time-rice, glutinous rice. regular rice. Selected 38 items among those brewages. alcoholics from glutinous rice, were distributed into 4 patterns. Four patterns, grounded on rapid-brewing and processing methods, were set one thing to another and analyzed.

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Comparative analysis of existing reinforced concrete buildings damaged at different levels during past earthquakes using rapid assessment methods

  • Sezer Aynur;Hilal Meydanli Atalay
    • Structural Engineering and Mechanics
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    • v.85 no.6
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    • pp.793-808
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    • 2023
  • Türkiye is located in a region where destructive earthquakes are frequently experienced due to its geological characteristics and geographical location. Therefore, considering the possibility of a devastating earthquake at any time, determining the reinforced concrete (RC) building seismic safety, constructed before or after the current seismic buildings code, is one of the most important issues to be completed firstly. For this purpose, rapid assessment methods developed to quickly determine the seismic safety of buildings are available in the literature. Comparison of the principles of Principles of the Determination of Risky Structures-2019, Column and Wall Index Method, P25 Scoring Method and Improved Discriminant Analysis Method, which are among these methods, have been aimed within the scope of this study. Within the scope of this paper, a total of 43 buildings in the Yalova/Çınarcık region of Türkiye that the damage level was determined by street observation method immediately after the 1999 Kocaeli (Izmit) Earthquake; 15 buildings with heavy damage and 28 buildings with moderate damage were examined by rapid assessment methods. Although the risk detection difference was not separated as a clear line in any of the methods used, the results obtained from the rapid assessment methods are evaluated as being compatible with the detected after earthquake structural seismic behavior of the buildings. The PDRS-2019 and column and wall index method gave the most approximate results. In the results obtained from the analyzes; structural features such as number of floors, frame continuity, soft/weak story irregularity, effective shear strength area, existence of heavy overhangs in plan, type of structural system have been found to be significantly effective on the earthquake behavior of buildings.

Comparative Study of the Preheating Methods to Extend the Life of the Fluorescent Lamp (형광등의 수명 연장을 위한 예열 방식의 비교 연구)

  • Han, Jae-Hyun;Jo, Gye-Huyn;Park, Chong-Yeun
    • Journal of Industrial Technology
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    • v.23 no.A
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    • pp.29-33
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    • 2003
  • This paper proposed methods of filament preheating to extend a fluorescent lamp life. The ballast for the fluorescent lamp can be classified into two main groups magnetics and electronics. The electronic ballast is lighter and smaller than the magnetic ballast and it can dim up and down. There are two ways to start the fluorescent lamp in the electronic ballast: rapid start and instant start. Also there are two methods of the driving inverter self excited oscillation and force excited oscillation. The rapid starting is different from the instant starting in that the rapid start is preheating the filament before the steady state. If there is a preheating process before the lamp ignition, the life of the fluorescent lamp can be increased. This paper presented the preheating methods for self excited oscillating system and force excited oscillating system.

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