Salmon milt, defatted soybeans, crab and shrimp shells, and cowhide have been discarded as an industrial waste around the world. Therefore, DNA, soy protein, chitin/chitosan, and collagen, which are obtained from these materials, are sustainable resources. Our research using sustainable resources is as follows; 1) removal of harmful organic compounds; 2) selective accumulation of metal ion; 3) development of anhydrous proton conducting material; and 4) development of bioplastic with the biodegradable property.

On the basis of FIA and LC in analytical methods using a liquid flow as much as possible to concern for the environment, we have studied to develop separation materials using carbon microparticles, analytical reagents specifically reacting with organic compounds, separation and analytical methods of dissolved organic compounds and bacteria in natural waters, a nano-LC which can separate and analyze an analyte in a sample volume of 1/1000000000 liters using a liquid flow volume of 1/1000000 liters, and separation and analytical methods using a self-reaction of sugars and amino acids.

I’m working on migration behavior of elements in hydrosphere from a chemical view.

【Elucidation of mechanism of solid-liquid interfacial reaction】
One of the factors affecting migration behavior of elements in environment (especially in hydrosphere) is “adsorption of dissolved species on soil”. In recent years, it has been reported that various reactions to the adsorbed species occur. I’m trying to elucidate the mechanism of the reaction.

【Elucidation of nature of dissolved species in hydrosphere】
The dissolved species in hydrosphere is complex because several dissolved species coexists. I’m trying to elucidate the nature of the complicated dissolved species with theoretical calculation.

We focus on the ecology of wild animals, including endangerd species, and their function in the ecosystem using direct observation or research tools such as camera trap. We explore better conservation methods and way for a sustainable coexistence with people.

One of the important roles of the Building Services Engineering, the follow things must be compatible.
· Building comfort environments for users.
· Adopting energy conservation techniques for the global warming-control measures.
Air Conditioning System : Explaining the effect of natural ventilation by the Computational Fluid Dynamics program.
Plumbing System : Recently, the follow things are realized.
· Water consumption decreases by using water saving plumbing fixtures.
· Booster pump systems increse.
Therefore, I explain the instantaneous flow rates and study the new design method for water supply system.

· We establish a water processing technology with the excimer lamp which does not include mercury. We perform the characteristic evaluation of the new source of light and consider whether we are established as a substitute new technology.
· The element concentration of human hair living in the same area and element concentration in water to drink are measured by ICP-MS. We examine relationship between toxic element concentration in hair and water element concentration.
· The production distinction of the farm products by stable isotope ratio analysis and the trace element analysis and marine products is studied.

We have demonstrated an inexpensive and easy-to-handle device for monitoring mammalian sperm motility made by patterning a piece of paper and measuring the activity of a specific enzyme. After applying semen to the hydrophilic center circle of the patterned paper, a tetrazolium-based colorimetric assay data can be used to help estimate the percentage of motile human sperm (sperm motility) in semen based on the character that motile human sperm moved in and on the paper.
(Matsuura et al. 2014, 2017, 2019)

Our group is interested in developing new synthetic methodologies to enable synthesis of biologically active natural compounds and their derivatives in environmental friendly manner. As such manners, we have developed metal-free regioselective cycloaddition of highly reactive o-quinone to form 1,4-benzodioxane and a procedure for construction of benzene ring from o-quinone and terminal alkynes through cycloaddition and photo-decarboxylation. We have also reported concise synthetic route to KDO, a kind of carbohydrate, including elimination of cyclic sulfite as a key step. By collaborative research with a company, functional monomers for dental adhesive resin cements have been developed. 　

We are investigating the dynamics of polycyclic aromatic hydrocarbons in the Seto Inland Sea and other areas of western Japan. In addition, clarifying the mechanism of contamination of Lake Kojima, we are conducting water quality surveys of Lake Kojima and elution experiments of organic matter and nutrient salts from the bottom sediment. We are also investigating the effects of chemical substances on the properties of aquatic organisms.

We mainly conduct research related to environmental health. We are working on microorganisms, viruses, contaminants, etc. that exist in water and soil. We also aim to search for useful microorganisms that can contribute to solving environmental problems. We also conduct research using epidemiological and informatic methods.

I analyze influences of biogeographic phenomena such as evolution and migration of host animals on parasite distribution or population using molecular phylogenetic analyses. I’m also conducting research on the mechanisms of migration and pathology of helminths in their host.