• Title/Summary/Keyword: analyzer

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Comparison of three types of analyzers for urine protein-to-creatinine ratios in dogs

  • Ji, Sumin;Yang, Yeseul;Jeong, Yeji;Hwang, Sung-Hyun;Kim, Myung-Chul;Kim, Yongbaek
    • Journal of Veterinary Science
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    • v.22 no.1
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    • pp.14.1-14.11
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    • 2021
  • Background: Quantitation of urine protein is important in dogs with chronic kidney disease. Various analyzers are used to measure urine protein-to-creatinine ratios (UPCR). Objectives: This study aimed to compare the UPCR obtained by three types of analyzers (automated wet chemistry analyzer, in-house dry chemistry analyzer, and dipstick reading device) and investigate whether the differences could affect clinical decision process. Methods: Urine samples were collected from 115 dogs. UPCR values were obtained using three analyzers. Bland-Altman and Passing Bablok tests were used to analyze agreement between the UPCR values. Urine samples were classified as normal or proteinuria based on the UPCR values obtained by each analyzer and concordance in the classification evaluated with Cohen's kappa coefficient. Results: Passing and Bablok regression showed that there were proportional as well as constant difference between UPCR values obtained by a dipstick reading device and those obtained by the other analyzers. The concordance in the classification of proteinuria was very high (κ = 0.82) between the automated wet chemistry analyzer and in-house dry chemistry analyzer, while the dipstick reading device showed moderate concordance with the automated wet chemistry analyzer (κ = 0.52) and in-house dry chemistry analyzer (κ = 0.53). Conclusions: Although the urine dipstick test is simple and a widely used point-of-care test, our results indicate that UPCR values obtained by the dipstick test are not appropriate for clinical use. Inter-instrumental variability may affect clinical decision process based on UPCR values and should be emphasized in veterinary practice.

Test Method Using VOC Analyzer to Measure VOC Emission of Paints for Wood-based Panel (VOC Analyzer를 이용한 목재용 도료의 휘발성유기화합물의 간이측정)

  • Eom, Young Geun;Kim, Ki-Wook;An, Jae-Yun;Kim, Hyun-Joong;Moon, Suck-Joong
    • Journal of the Korean Wood Science and Technology
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    • v.35 no.6
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    • pp.65-72
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    • 2007
  • The VOC (volatile organic compound) analyzer is devised to measure the four main aromatic hydrocarbon gases: toluene, ethylbenzene, xylene and styfene. It is not affected by ambient temperature and humidity. In addition, standby and measuring time of VOC Analyzer is a short as below 30 min and 8 min, respectively. Since the semiconductor gas sensor is supersensitive to gas components, it is not necessary to use a conventional gas concentrator or other complicated equipment. In this study, VOC emission behavior from 4 types paints (lacquer, urethane vanish, water-base paint, enamel paint) for wood-based panel was investigated using VOC Analyzer. After a specimen was spreaded on aluminum foil ($6.32{\times}6.32cm$) in $3{\ell}$ polyester bag, after 24 hours we could measure maximum VOC emission level that is a stabilized VOC value. Xylene of VOCs was high emitted from lacquer, urethane vanish and water-based paint, and TVOC (Toluene + Ethylbenzene + Xylene + Styrene) of lacquer was the highest emission concentration than another.

Analysing of the recent trends on the constitution diagnosis and treatment device patents (체질진단 및 치료기기 최신 특허동향 분석)

  • Lee, Yu-Jung;Lee, Jeon;Kim, Jong-Yeol
    • Korean Journal of Oriental Medicine
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    • v.13 no.2 s.20
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    • pp.91-100
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    • 2007
  • In this paper, We tried to analyze the patent trend on constitution diagnosis and treatment related technologies. For this, constitution diagnosis and treatment related technologies divided into 16 sub-technology by the advisory committee. And we analyzed patents applied in Korea, Japan, U.S.A., China, and Europe. The 16 sub-technology consist of pulse analyzer, skin diagnosis, tongue analyzer, face and body detector, face analyzer, voice analyzer, intelligence ontology, meridian diagnosis, infrared thermography, electric stimulation, laser, high and low frequency, physical, magnetic, and ultrasound therapy. As a result we found that patents of constitution diagnosis and treatment in Korea has been growing steadily in both quality and quantity since 1980s. The number of patent the pulse analyzer and low frequency therapy are larger than others. But applied relevant international patents, marketability of the patent and Cites per Patent (CPP) index are shown to be very low. In conclusion, to occupy key original technologies of the Oriental medical device, we need to apply more patent of the whole related technology and international patents.

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A Study on MS Crash Analyzer (MS 크래시 분석도구에 관한 연구)

  • Noh, Myoung Sun;Na, Jong Bae;Jung, Gwang Un;Ryou, Jae Cheol;Noh, Bong Nam
    • KIPS Transactions on Computer and Communication Systems
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    • v.2 no.9
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    • pp.399-404
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    • 2013
  • MSEC(Microsoft Security Engineering Center) performed fuzz testing Windows Vista with 350 million test cases for 14 months before launching it. They analyzed crashes resulted from the testing and developed crash analyzer !exploitable based on the data used to determine exploitability. In this paper, we describe how MS crash analyzer determines exploitability of crashes. Besides, we suggest an improvement to overcome the limitations found in the MS crash analyzer during the analysis.

A Study on the Development of Urine Analyzer System (뇨분석 시스템 개발에 관한 연구)

  • Lee, S.J.;Choi, B.C.;Kim, K.N.;Hong, S.I.;Kim, J.H.;Kim, J.H.;Jun, K.R.
    • Proceedings of the KOSOMBE Conference
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    • v.1997 no.05
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    • pp.303-308
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    • 1997
  • In this paper, we analyzed the spectroscopic properties of strip to analyzer urine qualitatively & quantitatively and make urine analyzer system stable by spectroscopy, and research the property of preamplifier unit. The analysis of spectroscopic properties of 10 pads in the strip is used for determine the wave length of light source of optic detector unit and used for basic materials which are necessary that we develop the algorithm analyzing the density grade of pad accurately. We make preamplifier unit by using the current to frequency method to measure the distribution of pad color. We implemented urine analyzer system. This system's hardware is composed of measuring unit for detect of distribution density of strip pad, main processing unit, communication unit, interface device, thermal printer, and indicator. The software consists of the program which manage the argument of test, proportion initial value of urine analyzer and calibrate analyzed result.

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Automatic PID Controller Parameter Analyzer

  • Pannil, Pittaya;Julsereewong, Prasit;Ukakimaparn, Prapart;Tirasesth, Kitti
    • 제어로봇시스템학회:학술대회논문집
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    • 1999.10a
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    • pp.288-291
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    • 1999
  • The PID (Proportional-Integral-Derivative) controller is widely used in the industries for more than fifty years with the well known Ziegler-Nichols tuning method and others varieties. However, most of the PID controller being used in the real practice still require trial and error adjustment for each process after the tuning method is done, which is consuming of time and needs the operator experiences to obtain the best results for the controller parameter. In order to reduce the inconvenience in the controller tuning, this paper presents a design of an automatic PID controller parameter analyzer being used as a support instrument in the industrial process control. This analyzer is designed based on the tuning formula of Dahlin to synthesize the PID controller parameter. Using this analyzer, the time to be spent in the trial and error procedures and its complexity can be neglected. Experimental results using PID controller parameter synthesized from this analyzer to the liquid level control plant model and the fluid flow control plant model show that the responses of the controlled systems can be efficiently controlled without any difficulty in mathemathical computation.

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Development of a Constituent Prediction Model of Domestic Rice Using Near Infrared Reflectance Analyzer(I) -Constituent Prediction Model of Brown and Milled Rice- (근적외선분석계를 이용한 국내산 쌀의 성분예측모델 개발(I) -현미와 백미의 성분예측모델-)

  • 한충수;동하원강
    • Journal of Biosystems Engineering
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    • v.21 no.2
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    • pp.198-207
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    • 1996
  • To measure the moisture content, protein and viscosity of brown and milled rice with Near Infrared Reflectance(NIR) analyzer, the comparison and analysis of the data from the chemical analysis and NIR analyzer were conducted. The purpose of this study is to find out the fundamental data required for the prediction of rice qualify and taste rank, and to develop a measuring method of constituents and physical characteristics of domestic rice with NIR analyzer. The important results can be summarized as follows. 1. The $r^2$ and SEC of moisture calibration from brown rice powder were 0.87 and 0.09 respectively, those of milled rice powder were 0.95 and 0.08 respectively. 2. The $r^2$ and SEC of protein calibration from brown rice powder were 0.83 and 0.20 respectively, those of milled rice powder were 0.86 and 0.20 respectively. 3. The $r^2$ and SEC of viscosity calibration from brown rice powder were 0.36 and 15.50 respectively, those of milled rice powder were 0.55 and 12.98 respectively. Further study is required to develop better prediction model for viscosity. It is necessary the continuous study including wavelength selection, because $r^2$ is small for practical use. 4. The regression equation for one rice variety was nearly coincident with other. Therefore, it is required that the prediction model should be developed for the all rice samples.

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A Study on Urine Analyzer Using Color Images of Strip (스트립의 컬러영상을 이용한 요 분석기에 관한 연구)

  • Cho, Yong-Hyun
    • Journal of the Korean Institute of Intelligent Systems
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    • v.17 no.7
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    • pp.919-923
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    • 2007
  • This paper presents an urine analyzer using color images of strip. An image sensor has been used to acquire an color images. The analyzer has a characteristics which takes a pictures of independent each pad responding to urine items all at once, and outputs the measured urine values by analysing an acquired pad colors. This device measures and analyses 11 urine items, and has a speed-up operation, light weight, small size, and makes accurate observations by processing the measured colors using processor. The urine analyzer transmits the urine items to peripheral devices, personal computers, hospitals, and another places by using a telegraph and a wireless interfaces.

Foot Pressure Analysis of Chronic Low Back Pain Patients by Foot Analyzer (Foot analyzer를 이용한 만성 요통 환자들의 족저 압력 분석)

  • Kim, Eun-Joo;Cho, Yu-Jeong;Song, Mi-Yeon
    • Journal of Korean Medicine Rehabilitation
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    • v.19 no.4
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    • pp.115-126
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    • 2009
  • Objectives : The aim of this study was to evaluate whether the foot pressure distribution correlates with the lumbo-sacral curvature, and the Oswestry Disability Index in chronic low back pain patients. Methods : We measured the fore foot pressure and the rare foot pressure using the foot analyzer in 28 women subjects with chronic low back pain. The lumbo-sacral curvature and the Oswestry Disability Index(ODI) were also measured. Results : 1. Subjects with higher ODI(%) had significantly lower Fore foot pressure/Rare foot pressure ratio(F/R ratio) (p<0.01). 2. Lumbar lordotic angle and Ferguson angle were inversely related to ODI(%) (p<0.05, p<0.01). 3. Lumbar lordotic angle and Ferguson angle were positively related to F/R ratio (all p<0.05). Conclusions : Using the Foot Analyzer(FA-48S, Tech storm Inc.) we have shown that F/R ratio has significant correlation with the lumbo-sacral curvature and the Oswestry Disability Index. These result suggest that the Foot analyzer may be used in assessing back pain in chronic low back pain patients.