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New Research Results

Wastewater treatment 02/05/2020

Small Minority Microbes in Activated Sludge Influence the Overall Wastewater Treatment Performance
– New analysis approach for understanding reaction mechanisms in the environment based on the microbial genetic diversity –

AIST combined a new analytical approach to evaluate genetic diversity with metatranscriptome analysis, and discovered that when degrading heavy oil in wastewater, nitrifying bacteria that are small minority microbes in activated sludge influence the heavy oil degradation performance of the overall activated sludge.

Figure of new research results from Energy and Environment

Ant neuropeptide 02/14/2020

Elucidation of the Mechanism of Dry Environment Resistance via Ant Neuropeptide
– Neuropeptide controls synthesis of hydrocarbons on the body surface –

AIST examined the expression levels of inotocin, an ant neuropeptide, between young worker ants staying the nest and old worker ants active outside. It was clarified that inotocin controls the synthesis of hydrocarbons that prevent the water loss from the body surface.

Figure

Gene sequence 04/15/2020

Gene Sequence Design Technology for Increasing Protein Production of Microorganism
– Using information technology to accelerate bio-manufacturing –

AIST developed a gene sequence design method based on information technology. The method examines only the beginning of the gene sequence instead of the overall sequence. The method was applied to protein production of microorganism and a high probability of increased production was demonstrated.

Figure of new research results Information Technology and Human Factors

Light up-conversion 02/17/2020

A Solid Material That Converts Near-Infrared Light to Visible Light Realized by a Solution Coating Method
– Elucidation of mechanism of conversion process provides clues for improving emission yield –

AIST has realized a solid material that converts near-infrared light to yellow visible light by using the rapid drying cast method. This material consists of newly synthesized metal-complex molecules that absorb near-infrared light uniformly dispersed in a luminescent material on solidification.

Figure of new research results from Materials and Chemistry

Micro LED 03/18/2020

Fivefold Increase in Emission Efficiency of GaN Micro LEDs at Low Current Density
– A step toward realization of high-efficiency, high-resolution micro LED displays –

AIST fabricated GaN micro LEDs using neutral-beam etching technology that is known to have extremely low processing damage, and realized GaN micro LEDs with almost no drop in emission efficiency even when the LED size is reduced to 6 μm.

Figure of new research results Electronics and Manufacturing

Slow earthquake 03/05/2020

Behavior of Fluid in Plate Subducting Directly Below the Japan Islands Related to the Occurrence of Slow Earthquakes
– Towards understanding of the mechanism of slow earthquakes in the Nankai Trough –

Many slow earthquakes occurred in the Nankai Trough. AIST calculated stress orientations within the Philippine Sea plate, investigated directions of fluid migration, and clarified that slow earthquakes occur as a result of fluid accumulating in the mantle below the Eurasian plate.

Figure of new research results Geological Survey of Japan

X-ray imaging 03/19/2020

Development of High-Sensitive Digital X-ray Imaging Device with Large Field of View for Infrastructure Inspection
– Drastically increase the efficiency of non-destructive inspection of industrial infrastructures –

AIST has developed a new digital X-ray imaging device that enables digital inspection of infrastructures. The developed device can be driven with batteries. Combination with a battery-powered X-ray source enables X-ray inspection up to 10 cm thick iron objects.

Figure of new research results National Metrology Institute of Japan

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