摘要:
A laser magnetic immunoassay (LMIA) technique is presented which combines the high detection sensitivity of the radioimmunoassay (RIA) technique with the simplicity of particle agglutination (PA) technique. The LMIA technique dispenses with the separation step of bound and free species (B/F separation), yet provides detectivity of the order of picogram of viral species per milliliter of analyte solution. The procedure includes of the steps of: preparing a superparamagnetic-labeled body of antigen or antibody; subjecting a specimen sample and the magnetic-labeled body to a specific immunoreaction to produce a reacted body; subjecting the reacted body containing both bound and free species to a spot magnetic field gradient; irradiating the spot with a laser beam; measuring the intensity of the outgoing light from the spot; and making a quantitative determination of the virus according to the time difference in the outgoing light signals generated by bound and free species.
摘要:
An in-situ laser magnetic immunoassay ("LMIA") method which eliminates the step of B/F separation generally required in the labeling method of immunoassays. The laser magnetic immunoassay permits a quantitative determination of a target immunological substance, for example, an antigen, an antibody, lymphocytes, viruses, tumorous cells and infections cells, in an analyte solution containing both bound and free species. A transitory increase in the magnetophoretic scattering of laser beam is observed when the analyte solution contains magnetic-labeled, bound target analyte, while no such increase is observed in a control test solution, containing only the relevant reagents. A magnetophoretic LMIA apparatus is provided which includes a magnetic gradient generating device which forms an integral part of the in-situ LMIA.
摘要:
In an optical fiber preform fabrication method having the steps of decomposing a glass raw material in a flame so that fine glass particles are produced; depositing the fine glass particles on a seed rod to form a porous preform; and consolidating the porous preform into a transparent optical fiber preform, use is made of a burner having a raw material supply orifice for supplying the glass raw material and a plurality of flame forming orifices disposed around the raw material supply orifice sequentially for forming a plurality of flames, respectively. The flame speed V.sub.k of a kth flame, the flame speed V.sub.k+1 of a (k+1)th flame surrounding outwardly of the kth flame and the flow speed Vm of the glass raw material are determined in a suitable manner. The glass raw material is supplied to the maluti-flame produced by the burner in which the kth flame is positioned rearwardly of the (k+1)th flame to synthesize the fine glass particles.
摘要:
A glass funnel suitable for a chemical strengthening method of an electric field application type without impairing the safety of a cathode ray tube. A glass funnel for a cathode ray tube, characterized in that glass at a body portion 3 contains at least Na2O and K2O, the conductivity of said glass at the strain point is at least 4×10−6 S/cm, the conductivity at 150° C. is at most 5×10−12 S/cm, and a compressive stress layer is formed by a chemical strengthening method on at least part of the outer surface of the body portion 3.
摘要翻译:适用于电场施加型化学强化方法的玻璃漏斗,而不损害阴极射线管的安全性。 一种用于阴极射线管的玻璃漏斗,其特征在于,主体部分3处的玻璃至少含有Na 2 O 2和K 2 O 2,所述玻璃在 应变点为至少4×10 -6 S / cm,150℃下的电导率为至多5×10 -6 S / cm,形成压应力层 通过化学强化方法在主体部3的外表面的至少一部分上。
摘要:
A glass funnel suitable for a chemical strengthening method of an electric field application type without impairing the safety of a cathode ray tube. A glass funnel for a cathode ray tube, characterized in that glass at a body portion 3 contains at least Na2O and K2O, the conductivity of said glass at the strain point is at least 4×10−6 S/cm, the conductivity at 150° C. is at most 5×10−12 S/cm, and a compressive stress layer is formed by a chemical strengthening method on at least part of the outer surface of the body portion 3.
摘要翻译:适用于电场施加型化学强化方法的玻璃漏斗,而不损害阴极射线管的安全性。 一种用于阴极射线管的玻璃漏斗,其特征在于,主体部分3处的玻璃至少含有Na 2 O和K 2 O,所述玻璃在应变点的电导率至少为4×10 -6 S / cm,导电率为150 ℃至多为5×10 12 S / cm,并且通过化学强化方法在主体部分3的外表面的至少一部分上形成压应力层。
摘要:
A visible image of an apparatus including a movable element to be watched is formed on the CRT of a television by means of an industrial television camera. One or more photosensors are provided on the face plate of the CRT to receive light from the image of the apparatus. When the movable element of the apparatus is moved from an original position, the output of the photosensor is changed. This, it is electrically detected whether or not the movable element exists in its given position by watching the output level of the photosensor.
摘要:
Glass for optical fibers is made of material of a binary system containing a fluoride selected from BaF.sub.2, SrF.sub.2 CaF.sub.2 and PbF.sub.2 and another fluoride selected from AlF.sub.3 and ZrF.sub.4.
摘要:
Fine and homogeneous oxide particles for superconductors which can be sintered at a low temperature are prepared in a liquid phase by the sol-gel method using alkoxides as starting materials. By forming a buffer layer between a substrate and a superconducting film, good-quality and oriented superconducting film can be fabricated. Highly c-axis-oriented superconducting film and bulk products can be prepared from particular starting compositions in Ln-Ae-Cu-O and Bi-Ae-Cu-O systems. The oriented film can be produced by painting a paste of such starting compositions on a substrate followed by sintering, and the bulk form can be produced by pressing the pre-sintered powder of such starting compositions.
摘要:
In an optical fiber preform fabrication method having the steps of decomposing a glass raw material in a flame so that fine glass particles are produced; depositing the fine glass particles on a seed rod to form a porous preform; and consolidating the porous preform into a transparent optical fiber preform, use is made of a burner having a raw material supply orifice for supplying the glass raw material and a plurality of flame forming orifices deposed around the raw material supply orifice sequentially for forming a plurality of flames, respectively. The flame speed V.sub.k of a kth flame, the flame speed V.sub.k+1 of a (k+1)th flame surrounding outwardly of the kth flame and the flow speed Vm of the glass raw material are determined in a suitable manner. The glass raw material is supplied to the multi-flame produced by the burner in which the kth flame is positioned rearwardly of the (k+1)th flame to synthesize the fine glass particles.
摘要:
An infrared ray-transmitting glass composition for optical fibers consisting essentially of 28 mol % to 38 mol % of BaF.sub.2, 2 mol % to 7 mol % of GdF.sub.3 and 58 mol % to 69 mol % of ZrF.sub.4, and optical fibers comprising said glass composition.