• Title/Summary/Keyword: rapid screening

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Cancer Screening and Influencing Factors in a Island Residents (도서 지역 주민의 암 조기검진과 영향요인)

  • Lee, Myung-Suk
    • Asian Oncology Nursing
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    • v.8 no.2
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    • pp.138-146
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    • 2008
  • Purpose: This study was to investigate the cancer screening rates and influence factors in island residents. Methods: The participants were 1,223 Shinan gun island residents. Data were collected using structured questionnaires from June 23th to September 8th, 2007 and analyzed using the SAS win 12.0 program. Results: The cancer screening rate was 49.9%. There were significant differences for sex, age, living with family, economic level, smoking, exercise, private health insurance, familial history, health concern. The highest practice rate was of stomach cancer (55.9%), which is gastric endoscopic exam. The most common motivation of getting a screening test was the concern of health (40.8%), and many had no recommender of the screening test (30.0%). 58.4% of the subjects were satisfied with the screeing tests and the most frequent reason of the satisfaction was 'rapid result report' (33.1%). The msot common reason of unsatisfaction was 'long waiting time' (25.7%). Most participants agreed with the necessity of cancer screening (74.9%). More than half participants said they would participate in another cancer screening tests in the future (51.9%). Private health insurance, exercise, health concern and smoking showed significant predictors (20.6%) of obtaining cancer screening. Conclusion: The results suggest that health care professionals should give more attention to help the residents obtain cancer screening tests. A further study is necessary to develop any effective intervention for people who do not practice cancer screening tests.

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Effects of Limited Capacity on Screening Procedures Using a Surrogate Variable (대용특성을 활용한 스크리닝 검사에서 제한된 생산용량의 효과분석)

  • Choi, Ik-Jun;Hong, Sung-Hoon
    • Journal of Korean Society for Quality Management
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    • v.36 no.4
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    • pp.77-86
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    • 2008
  • Due to the rapid growth in automated testing and manufacturing systems, screening inspection becomes very attractive. In this paper, we investigate the effects of limited capacity on screening inspection using a surrogate variable. The model is developed under the assumption that the reprocessed and nonreprocessed items are produced by the same manufacturing process and therefore their quality characteristics are independently and identically distributed. Profit models are constructed which involve four price/cost components; selling price, cost incurred by imperfect quality, reprocessing and quality inspection costs. Methods of finding the optimal screening limits are presented, and a numerical example is given. Sensitivity analyses are also performed to study the effect of a process standard deviation on this model.

Trends in MEA-based Neuropharmacological Drug Screening (MEA 기반 신경제약 스크리닝 기술 개발 동향)

  • Y.H. Kim;S.D. Jung
    • Electronics and Telecommunications Trends
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    • v.38 no.1
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    • pp.46-54
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    • 2023
  • The announcement of the US Environmental Protection Agency that it will stop conducting or funding experimental studies on mammals by 2035 should prioritize ongoing efforts to develop and use alternative toxicity screening methods to animal testing. Toxicity screening is likely to be further developed considering the combination of human-induced pluripotent-stem-cell-derived organ-on-a-chip and multielectrode array (MEA) technologies. We briefly review the current status of MEA technology and MEA-based neuropharmacological drug screening using various cellular model systems. Highlighting the coronavirus disease pandemic, we shortly comment on the importance of early prediction of toxicity by applying artificial intelligence to the development of rapid screening methods.

Design of Rectifying Screening Inspections under a Bivariate Normal Distribution (이변량 정규분포 하에서 선별형 스크리닝 검사의 설계)

  • Hong, Sung-Hoon;Choi, Ik-Jun;Lee, Yoon-Dong;Lee, Min-Koo;Kwon, Hyuck-Moo
    • Journal of Korean Society for Quality Management
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    • v.35 no.4
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    • pp.147-158
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    • 2007
  • Owing to the rapid growth in automated manufacturing systems, screening inspection becomes an attractive practice for removing nonconforming items, and it has been suggested that inspection will essentially become an inherent part of modem manufacturing processes. In this paper, we propose rectifying screening inspections which allow quality practitioners to use performance and surrogate variables interchangeably in real-time applications. Two screening inspections are considered; a statistically-based screening inspection to reduce the current proportion of nonconforming items to a specified AOQ(average outgoing quality) after screening, and an economically-based screening inspection where the tolerance limit is determined so that the expected total cost is minimized. It is assumed that the performance variable and the surrogate variable are jointly normally distributed. For two screening inspections, methods of finding the optimal solutions are presented and numerical examples are also given.

Isolation and Bioactivity Analysis of Salidroside from Acer tegmentosum using On-line Screening HPLC-ABTS+ Assay (On-line Screening HPLC-ABTS+ Assay을 이용한 산청목으로부터 Salidroside의 분리 및 생물활성 분석)

  • Lee, Kwang Jin;Song, Na-Young;Ma, Jin Yeul
    • KSBB Journal
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    • v.29 no.2
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    • pp.124-130
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    • 2014
  • Acer tegmentosum was a traditional Korean herbal medicine showing various pharmacological activities. In this work, A. tegmentosum were extracted with boiling water and then successively partitioned with dichloromethane, ethyl acetate, n-butyl alcohol (n-BuOH), and water. Salidoside, the target compound, was purified in n-BuOH phase using a chromatography method. For the analysis of salidoside, TLC and LC-MS were used as well as on-line screening $HPLC-ABTS^+$ assay with three different wavelength of 254, 280, and 320 nm. An amount of 1.34 g of salidoside were obtained in n-BuOH phase fromAcer tegmentosum was a traditional Korean herbal medicine showing various pharmacological activities. In this work, A. tegmentosum were extracted with boiling water and then successively partitioned with dichloromethane, ethyl acetate, n-butyl alcohol (n-BuOH), and water. Salidoside, the target compound, was purified in n-BuOH phase using a chromatography method. For the analysis of salidoside, TLC and LC-MS were used as well as online screening $HPLC-ABTS^+$ assay with three different wavelength of 254, 280, and 320 nm. An amount of 1.34 g of salidoside were obtained in n-BuOH phase from 3 kg of dry biomass. The on-line screening $HPLC-ABTS^+$ assay is rapid and efficient tool to search bioactivity from A. tegmentosum. 3 kg of dry biomass. The on-line screening $HPLC-ABTS^+$ assay is rapid and efficient tool to search bioactivity from A. tegmentosum.

Studies on the Rapid Plasma Reagin(RPR) Card Test for the Diagnosis of Syphilis (매독진단(梅毒診斷)을 위(爲)한 신속(迅速)한 혈장항체검사법(血漿抗體檢査法)에 관(關)한 연구(硏究))

  • Kim, Joo-Deuk;Lew, Joon;Kim, Hyun-Joo
    • The Journal of the Korean Society for Microbiology
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    • v.3 no.1
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    • pp.15-23
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    • 1968
  • For the effective control of Syphilis, many investigators have developed a more rapid, simple and economical screening serological test which is adequately sensitive and specific. To fulfill the requirements of a more rapid serologic test for syphlis, a substitute for the conventional serum specimen was needed since considerable time and labor are involved in the processing of blood to serum. Burdon suggested the use of plasma in the serologic tests for syphilis as a substitute for serum. He noticed that plasma was more sensitive than serum in the Kline and Kahn tests, and attributed this to the presence of more antibody-like substance, "reagin" in plasma than in serum. However, to make plasma sufficiently sensitive, it was necessary to inactivate plasma by heating at a temperature of $56^{\circ}C$ for about 30 minutes. Heating of plasma resulted in the precipitation of fibrinogen which made centrifugation necessary to obtain dear plasma. Since the chief disadvantage to the use of unheated plasma(or serum) was a reduction in sensitivity of results-which probably was due to a labile factor such as complement-Portnoy et al began to consider rapid chemical methods of inactivation of plasma(or serum). They experienced that choline chloirde was shown to be anticomplementary which suggested its use as an inactivating agent for unheated plasma(or serum). In 1959 Portnoy et al reported the Rapid Plasma Reagin(RPR) Test for syphilis which is a more rapid, economical and simple. But still this test has many disadvantages as a rapid performing, field and office procedure, because it requires the usual laboratory equipments such as centrifuge, rotating machine, microscope etc. To substitute these disadvantages of the RPR test, in 1962, Portnoy et al developed the Rapid Plasma Reagin(RPR) card test for syphilis, which has the following advantages: a) Simplicity and rapidity of performance, b) Requires no laboratory equipments, c) Stable antigen suspension, d) Adequate sensitivity and specificity. This RPR card test can be used as a rapidly performing and screening test in field investigation, outpatient clinics, small laboratories and hospitals doing limited syphilis serology, and predonor in blood bank. Private clinic which has limited laboratory equipment and technic for syphilis serology can also use this RPR card test as a tool in the rapid diagnosis of syphilis. It was thought that this RPR card test is a useful tool in Korea for private physician and mass survey for syphilis diagnosis. But Portnoy patented the reagents needed for the performing the RPR card test. Therefore authors developed newly the reagents and according to Portnoy's method evaluated the newly developed. RPR card test compared with the VDRL, Kolmer CF, and RPCF tests. The RPR card and VDRL tests were performed plasma and serum from the total 1,132 cases. Among these 1,131 cases, 521 were syphilis suspected laboratory specimens, and 611 were syphilis unsuspected healthy young men. After screening with these two tests, the RPR card and VDRL tests, reactive specimens to the above one or both tests were retested by the Kolmer CF and RPCF tests.

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Fast Screening of Harmful Disinfectants in Household Products via Low-Temperature Plasma Ionization-Mass Spectrometry

  • Lee, Hyoung Jun;Kweon, Gi Ryang;Yim, Yong-Hyeon
    • Mass Spectrometry Letters
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    • v.8 no.2
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    • pp.44-47
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    • 2017
  • Isothiazolinone derivatives are widely used in consumer products as disinfectants or preservatives, but there are growing concerns about their impact on human health. Therefore, rapid screening of these biocides is very important for proper control and regulation of potentially hazardous substances. To this end, low-temperature plasma (LTP) ionization mass spectrometry (MS) was investigated to demonstrate its potential for direct and selective analysis of isothiazolinones from sprayed aerosol samples. Benzisothiazolinone (BIT) was clearly identified from a commercial fabric deodorant using LTP ionization MS and MS/MS. LTP allowed selective ionization of BIT directly from the simply sprayed aerosol sample and illustrated its potential for fast screening without sample pre-treatments. Selective nature of LTP ionization, on the other hands, implicates use of LTP ionization MS as a general screening method for specific groups of hazardous chemicals in commercial products.

Antioxidant Activity Analysis of Useful Compounds from Artemisiae Annuae Herba Using On-line Screening HPLC-ABTS+ Assay (On-line Screening HPLC-ABTS+ assay를 이용한 청호로부터 유용성분의 항산화 활성 분석)

  • Lee, Kwang Jin;Ma, Jin Yeul
    • Journal of Applied Biological Chemistry
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    • v.57 no.4
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    • pp.301-305
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    • 2014
  • The Antioxidant activity screening identification of five kind compounds in Artemisiae annuae herba with the on-line screening high performance liquid chromatography (HPLC) $ABTS^+$ assay. The various experimental variables such as the extraction time (h) and extraction solvent composition (%) of dipping method were investigated efficiently extraction at the room temperature $25^{\circ}C$. The results, the highest yield of total extract amount (0.458 g, 15.250%) was obtained by dipping method with 100% water and extraction time to 3 h. And the on-line screening HPLC-$ABTS^+$ assay method was rapid and efficient to search for bioactivity from natural products.

A Rapid Screening for Aluminum-tolerant and -sensitive in Barley (Hordeum vulgare L.) and Plasma Membrane H+-ATPase Expression (알루미늄 내성과 민감성 보리의 빠른 screening과 원형질막 H+-ATPase의 발현)

  • Kim, Hyun-Sung;Oh, Jung-Min;Ahn, Sung-Ju
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.56 no.1
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    • pp.72-79
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    • 2011
  • Here we report a simple screening system using hematoxylin staining (HS) of the root apex. It allowed rapid classification into different aluminum (Al) tolerance from 65 cultivars within one week. Using this system, we selected the most Al-tolerant (Jayae-2) and-sensitive (Pum-2) barley (Hordeum vulgare L.) The results show that the different responses in Al-induced growth inhibition, Al accumulation and expression of plasma membrane (PM) $H^+$-ATPase in root apices of selected two cultivars. It showed strongly Al-induced growth inhibition in a dosedependant manner only in Pum-2 but not in Jayae-2. Aluminum accumulation in root apices (10 mm) was significantly higher in Pum-2 only. The $H^+$-ATPase expression of PM vesicles by western blotting was decreased in Pum-2 but not in Jayae-2 treated with $20{\mu}M$ Al for 24 h. These finding indicate to screen from our system is rapid and reliable and to sustain the expression of PM $H^+$-ATPase at translational level is an important role in root growth as affected by Al.

Simple priority setting method for Screening in public health assessment of waste incineration facilities (폐기물 소각시설 주변 환경보건평가 중 스크리닝 단계에서의 우선순위 선정기법에 관한 연구)

  • Kim, Gi Young;Hong, Seung Cheol
    • Journal of Environmental Impact Assessment
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    • v.21 no.5
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    • pp.813-821
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    • 2012
  • Environmental and public health concern for the emission of air pollutants from burn-up process in waste incineration plants located in the vicinity of living environment was increased during the past decade. The purpose of this study was to suggest of the simple and rapid method of priority setting model for the decision of full-scale public health assessment. This method was consists of total 5-step. Step 1 was "secure the satellite map" and we can use the satellite map which serves from the website such as NAVER Co. Step 2 was "drawing mesh on the map" for catch the point of occupation of environmental sensitivity facilities, and step 3 was "identification and sorting of the facilities", Step 4 was "setting of weight" using the "weighted linear combination (WLC) method". Finally, all facility was sorted by score. As a result, we can set a priority of 145 facilities based on 177 facilities which managed in local government. Facilities in Seoul metropolitan area was high rank in priority list. On the other side, Facilities located at the country or rural area was low rank because of low occupation of the house and the environmental sensitivity facilities such as kindergarten, elementary school, and hospital. In this study, we suggested simple and rapid method that using for screening procedure of public health assessment.