Development of electron spin resonance radical immunoassay for measurement of airborne orchard grass (Dactylis glomerata) pollen antigens

Takahashi, Yuichi; Aoyama, Mikio; Abe, Etsuko; Aita, Takeshi; Kawashima, Shuichi; Ohta, Nobuo; Sakaguchi, Masahiro

doi:10.1007/s10453-007-9082-y

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…Grass and mugwort pollen, along with C. japonica are prevalent causes of pollinosis in some areas of Japan and other countries. We once focused on pollen antigens (allergens) and quantifying the amount of the major pollen antigen present in the air, such as Cry j 1or Dac g, which are common to this region (Takahashi et al , 2008, with the aim of gaining knowledge to ultimately aid pollinosis patients. However, these methods have not been widely adopted for practical use in terms of cost and the availability of automation.…”

Section: Resultsmentioning

confidence: 99%

Relationship between Large amounts of Cryptomeria Japonica D. Don Pollen Dispersion and Cold Front Passage

Takahashi¹,

Kawashima²,

Suzuki³

et al. 2022

Int J Plant Anim Environ Sci

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Recently, with the proliferation of automatic Cryptomeria japonica pollen monitors, it has become possible to obtain data measured simultaneously from multiple locations. The KH-3000 monitor used by the Pollen Observation System of the Japanese Ministry of the Environment, "Hanako-san", and the "Pollen Robo" monitor created by Weathernews Inc. were installed in various places in the Tohoku region for collection of simultaneous pollen count data, and the results indicated that the period of the day when large amounts of C. japonica pollen were dispersed may be related to the passage of a cold front extending from a low pressure system. When the types of pollen dispersed on that day were examined under a microscope, most of them were C. japonica pollen. Therefore, we investigated the relationship between the periods of these two events, with transit time of the cold front determined from the point when the wind direction changed from eastward to westward. The area with a high concentration of C. japonica pollen moved from the Sea of Japan side to the Paci c Ocean side in conjunction with the movement of the front. In 40% of the cases, the highest dispersion of C. japonica pollen occurred at the same time as the front passed, and 90% of the cases were within two hours before or after the passage.The number of dispersions was high in the northern part of the Tohoku region close to the low pressure system at the end of the front and low in the southernmost part of the Tohoku region away from this system.

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Section: Resultsmentioning

confidence: 99%

Relationship between Large amounts of Cryptomeria Japonica D. Don Pollen Dispersion and Cold Front Passage

Takahashi¹,

Kawashima²,

Suzuki³

et al. 2022

Int J Plant Anim Environ Sci

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“…A variety of industrial objects are systematically analyzed, ten methods for industrial measurement are summarized, and the basic principles for choosing the right industrial method are indicated [1] . Takahashi [2] etc, developed a highly sensitive method for the measurement of airborne orchard grass pollen antigens using an electron spin resonance (ESR) radical immunoassay. Moerlein [3] etc, shown the theory and implementation of a force measurement-based approach to controlling work-piece diameter in cylindrical grinding.…”

Section: Introductionmentioning

confidence: 99%

Concept of Active Measurement

Cao

Liu

Zhou

et al. 2011

KEM

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In an ideal situation, good measuring system can be designed if exact information is known concerning performance and structures involved during the lifetime of the measuring object. But in the real world uncertainties of object exist in this information as well as in the method of measurement. To account for these uncertainties, concept of active measurement has been presented in this paper. Nowadays, scale transform and smart sensor have been applied for realizing elementary active measurement technique, the objective herein is to present measuring method of actively adjusting structure based on these factors. The practicality of this concept is illustrated with an engineering system using wire rope nondestructive testing device, double-point measurement device with eddy current probe as sensors is designed. Mathematical model of the rope’s characteristics and real-time quantity to trim of measure device is established according to relative spacing between sensors and rope. The idea of active control is introduced here, adjusting instrument structure timely based on mathematical relationships and feedback information will achieve the active measurement.

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Automated pollen monitoring system using laser optics for observing seasonal changes in the concentration of total airborne pollen

et al. 2017

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Development of electron spin resonance radical immunoassay for measurement of airborne orchard grass (Dactylis glomerata) pollen antigens

Abstract: We have developed a highly sensitive method for the measurement of airborne orchard grass (Dactylis glomerata: Dac g) pollen antigens using an electron spin resonance (ESR) radical immunoassay. In this immunoassay, the lowest detectable level of Dac g antigen in a sample is 0.

Cited by 7 publications

References 14 publications

Relationship between Large amounts of Cryptomeria Japonica D. Don Pollen Dispersion and Cold Front Passage

Relationship between Large amounts of Cryptomeria Japonica D. Don Pollen Dispersion and Cold Front Passage

Concept of Active Measurement

Automated pollen monitoring system using laser optics for observing seasonal changes in the concentration of total airborne pollen

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