Investigation on image signal receiving performance of photodiodes and solar panel detectors in an underground facility visible light communication system.

For the safety, underground facilities are required to be inspected regularly, especially with image analysis. Traditional wireless and wired transmission techniques have a weakness of limited transmission range in narrow underground environments. In this study, a new image transmission method based on visible light communication (VLC) has been thus proposed.

A Coordinated Wheeled Gas Pipeline Robot Chain System Based on Visible Light Relay Communication and Illuminance Assessment.

The gas pipeline requires regular inspection since the leakage brings damage to the stable gas supply. Compared to current detection methods such as destructive inspection, using pipeline robots has advantages including low cost and high efficiency. However, they have a limited inspection range in the complex pipe owing to restrictions by the cable friction or wireless signal attenuation.

Problems in polarized light microscopy observation of birefringence of calcium pyrophosphate dihydrate crystals.

To reconsider the problems arising from the use of the phase plate as a test plate inserted into a polarized light microscope system for the analysis of triclinic calcium pyrophosphate dihydrate (t-CPPD) crystals, or Ca(2)P(2)O(7) x 2H(2)O in the synovial fluid of arthritis patients, we made the polarized light microscopy observations using a phase plate with a retardation of 530 nm for the synthesized t-CPPD crystals well-characterized by X-ray powder pattern indexing and single crystal X-ray diffraction measurements. The microscopy observations were made of crystals of different sizes, thicknesses and shapes. The retardation was assessed using the interference color chart at four extinction and diagonal positions both with and without the test plate.

New staining method for use in electrophoretic determination of alpha-amylase isoenzymes in serum.

We have developed and evaluated a new staining method for use in electrophoretic analysis of alpha-amylase (AMY, EC3. 2. 1.

[Alcohol dehydrogenase interference in clinical chemical laboratory tests].

Alcohol dehydrogenase (AD, EC 1.1.1.

[Effects of acarbose on amylase tests].

Acarbose is an antidiabetic drug that inhibits alpha-D-glucosidase and alpha-amylase. We have found discrepancies of serum and urine amylase activities (AA) determined with different assay methods using samples collected from diabetes mellitus patients taking acarbose. As a result of our screening test using the urine samples, we found a 22% probability of discrepancy (the differences between the two methods were > or = 10% at AA > or = 100 U/l).

[Discrepancies in the measurement of serum pancreatic lipase activities by non-enzymatic and enzymatic assays, and relationships to pseudohyperlipasemia].

I have observed discrepancies in the measurement of serum pancreatic lipase(LIP, Triacylglycerol acylhydrolase, EC 3.1.1.