Artificial Carbon Dioxide Research Articles

Artificial carbon dioxide source to attract lesser cornstalk borer (Lepidoptera: Pyralidae) larvae.

Different combinations of urea, urease (in jack bean meal, Canavalia DC.), and water were tested as carbon dioxide sources to attract larvae of lesser cornstalk borer, Elasmopalus lignosellus (Zeller), by using olfactory bioassays with an olfactometer and infrared gas analysis. A combination of urea, jack bean meal, and water was necessary to release a high level of carbon dioxide to attract the larvae. Different proportions of the three ingredients had different carbon dioxide release rates and exhibited different levels of attraction to the larvae. When carbon dioxide concentration was too high, attractiveness declined. Combinations with different amounts of water remained attractive for a period of up to 3 d, depending on the moisture of the samples. When Zonolite was used to simulate the soil conditions in the olfactometer, significantly more larvae located the area near the artificial carbon dioxide sources compared with the control. When combined with the artificial carbon dioxide sources, three insecticides (Lorsban, Temik, and Force) did not obviously affect the release rates of carbon dioxide, and more larvae were attracted to samples with the carbon dioxide source than to the samples without carbon dioxide.

Prospect of Geological Sequestration of CO2 for Greenhouse Gas Mitigation and Natural Gas Recovery.

The annual 70 million tons' CO2 injection separated from flue gas of fossil fueled power plants into aquifer may reduce Japan's artificial carbon dioxide emission as much as 6% with annual cost of 420 billion yens that match 1, 200 yens/c carbon tax. Geological sequestration of CO2 is a technically and economically feasible option for mitigation of greenhouse gas emission.Carbon dioxide injection under gas-hydrate-filled layers or under permafrost layers can realize the greenhouse gas mitigation and recovery of unused natural gas. Autogenous sealing of CO2 in deep and cool aquifers assures virtually complete and practically unlimited subsurface containment of CO2.Chemoautotrophs fix carbon dioxide in deep aquifers even without sun light. Methanogens can convert CO2 into methane in deep anoxic aquifers. Biogenetic restoration of subsurface hydrocarbon deposits is expected in CO2injected aquifers after tens or hundreds of years. Microbiological recycling of CO2 in aquifers is an attractive future technology for energy-short countries such as Japan. Important key for underground CO2 recycling is hydrogen supplies owing to microbial decomposition of organic matter and from geochemical water-rock interaction in deep rock formations.

人工炭酸泉浴による糖尿病性潰ようの治療

人工炭酸泉浴による糖尿病性潰ようの治療

Effect of artificial carbon dioxide bath additive containing the green leaf extract of Ginkgo biloba L. on severe cold consitution

<I>Effect of artificial carbon dioxide bath additive containing the green leaf extract of Ginkgo biloba L. on severe cold consitution</I>

Catalytic formation of .alpha.-keto acids by artificial carbon dioxide fixation

Catalytic formation of .alpha.-keto acids by artificial carbon dioxide fixation

Effect of Artificial Carbon Dioxide Bathing on Oxygen-Dissociation Curve of Hemoglobin

Effect of Artificial Carbon Dioxide Bathing on Oxygen-Dissociation Curve of Hemoglobin