著者
野田 衛 上間 匡
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.29, no.1, pp.9-15, 2019 (Released:2019-04-10)
参考文献数
15

Contamination of oysters with human noroviruses is an important issue in food safety because oysters are often consumed raw. Hydrostatic pressure treatments have been revealed to be effective for inactivation of noroviruses in oysters in other countries. We therefore confirmed the effectiveness of hydrostatic pressure treatments in inactivating noroviruses in oysters using a genetic method developed in our previous studies. To increase the application of hydrostatic pressure treatments in the fishing industry, it is necessary to understand the technique, advertise it to the public, and reach an agreement regarding the commercial or legal handling of foods processed in this manner.
著者
澤村 精治
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.25, no.3, pp.239-246, 2015 (Released:2015-09-17)
参考文献数
37
被引用文献数
1 1

Partial molar volumes and reaction volume of inorganic electrolytes, hydrophobic solutes, and amino acids, estimated from high pressure solubility or other high-pressure method are reviewed.
著者
草場 啓治
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.14, no.4, pp.305-311, 2004 (Released:2004-12-20)
参考文献数
25

In 1960s and 1970s, some multi-anvil type high-pressure devices were developed and installed in Japan for high-pressure research. History of these apparatuses made in Japan is introduced in this article, based on program and abstract of papers for the high pressure conference of Japan.
著者
乾 雅祝 石川 大介 田村 剛三郎
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.18, no.4, pp.321-327, 2008-11-20 (Released:2009-01-09)
参考文献数
28

We have carried out x-ray diffraction, small-angle x-ray scattering and high-resolution inelastic x-ray scattering measurements for supercritical fluid Hg accompanying the metal-nonmetal (M-NM) transition using synchrotron radiation at SPring-8. In these structural studies we have found an increase in the short-range correlation length and the dynamical sound velocity much faster than the adiabatic sound velocity in the M-NM transition region. These findings strongly suggest the existence of a peculiar fluctuation intrinsic to the M-NM transition in the fluid, which may reflect a first-order M-NM transition predicted by Landau, the winner of the Nobel Prize in physics.
著者
浜根 大輔 藤田 尚行 八木 健彦
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.21, no.2, pp.109-114, 2011 (Released:2011-08-04)
参考文献数
31
被引用文献数
1

The so-called “Missing Xe” problem is a long standing unsolved problem and is related to many fields in Earth science: formation process and evolution of the Earth, origin and evolution of the atmosphere, and geochemistry. Although the long-held expectation was the retention of xenon in the iron-rich core, present experimental result clarified that it is unlikely to occur. This implies that we have to reconsider the missing xenon problem and encourage many scientists to pursuit other possibilities.
著者
真下 茂
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.17, no.4, pp.321-327, 2007-11-20 (Released:2007-12-23)
参考文献数
33
被引用文献数
1

Through the determination of Hugoniot parameters, we can get useful information about high-pressure phase transition, equations of state (EOS), etc. of solids, without pressure calibration. We have performed the Hugoniot-measurement experiments on various kinds of hard materials of chalcogenides, oxides, nitrides and borides by using a high time-resolution streak camera system (inclined-mirror method) to investigate the yielding property, phase transition and EOS. It was found that almost all brittle materials behave as an elasto-isotropic solid unlike metals (elasto-plastic solid), except TiB2. The high-pressure phase transitions were observed for ZnS, ZnSe, TiO2, ZrO2, Gd3Ga5O12, AlN and B4C. Some oxide materials showed virtually incompressible property in the high-pressure phase region. Here, the Hugoniot-compression data are reviewed, and the yield property and phase transition of these hard materials are discussed, as well as the EOS of the high-pressure phase.
著者
本田 孝志
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.26, no.2, pp.149-156, 2016 (Released:2016-06-21)
参考文献数
28

In this article, we introduce our recent high-pressure study on magnetism and multiferroicity in olivine-type Mn2GeO4. This compound shows successive magnetic transitions at ambient pressure and a ferroelectric ground state driven by spin-spiral order, i.e., a multiferroic state. The multiferroicity under high pressure was taken by using a recently constructed measurement system equipped with a diamond anvil cell. The pressure evolution of the magnetic structures was investigated with powder and single-crystal neutron scattering experiments using a Paris-Edinburgh press. We found that the ferroelectricity in the lowest-temperature phase disappears at 6 GPa where an incommensurate-commensurate magnetic phase transition is observed. The origin of the pressure-induced transition is discussed. Some details of the high-pressure experimental techniques will be also presented.
著者
赤浜 裕一 川村 春樹
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.4, no.1, pp.22-27, 1995-02-20 (Released:2009-08-07)
参考文献数
18
被引用文献数
1

By using high-energy and high-brilliant synchrotron radiation source in ESRF and PF, an angle-dispersive powder x-ray diffraction study on oxygen has been carried out up to 117 GPa at room temperature. A new highpressure structural transition was observed at 96 GPa and explained as an isostructural one with a discontinuous change of lattice constants in a monoclinic cell. Metallization for oxygen reported by S. Desgreniers et al. [1] is ascribed to the transtion.
著者
山本 和貴
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.23, no.1, pp.39-46, 2013 (Released:2013-03-09)
参考文献数
47
被引用文献数
2

Starch gelatinizes when sufficiently heated in the presence of sufficient amount of water. Upon gelatinization, starch crystallinity is lost with the granules swollen. Depending on the botanical origin of starch, requirements for heat gelatinization may differ. Starch gelatinization can also be induced by high hydrostatic pressure. Requirements for pressure gelatinization may also differ depending on botanical origin of starch, pressure, water, and temperature. Characteristics of pressure gelatinization will be briefly reviewed as compared with heat gelatinization.
著者
若月 基 米澤 哲夫 高橋 秀明 武富 義和
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.12, no.1, pp.50-55, 2002 (Released:2003-06-17)
参考文献数
1
被引用文献数
1

Exploration for natural methane hydrate was carried out in the Nankai-Trough offshore Japan at a water depth of 945 m over an 88-day period, from November 1999 to February 2000. This was a national project led by the Ministry of International Trade and Industry (MITI) to seek a new energy source. It was organized by Japan National Oil Corporation (JNOC) in collaboration with Japan Petroleum Exploration Co., Ltd. as the drilling operator. The Nankai-Trough wells were drilled with a deepwater semisubmersible rig. The location was selected where BSR (Bottom Simulating Reflector) is the clearest on the seismic section. Six wells were drilled through the BSR horizon and the hydrate rich formation was confirmed between 1135 m to 1213 m BMSL (below mean sea level) by LWD data, core samples and electric logging data.
著者
Selezion A. Hambir Jens Franken Dana D. Dlott
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.7, pp.891-896, 1998-03-03 (Released:2009-08-07)
参考文献数
18
被引用文献数
2 5

Using a moderate energy picosecond pulse laser, 4 GPa shock waves are reproducibly generated at a high repetition rate in molecular solids. These tiny but powerful shocks are termed “nanoshocks”. Time resolved vibrational spectra with high signal to noise can be obtained using coherent anti-Stokes Raman scattering (CARS). Applications of nanoshocks in research and industry are discussed briefly. Results are presented on a molecular crystal, anthracene, and an energetic material, NTO. The temperature and pressure of the shocked material, and the risetime and velocity of the shock front are determined spectroscopically. Ultrafast material relaxation processes are investigated.
著者
寺嶋 正秀 木村 佳文 星原 悠司
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.17, no.1, pp.4-12, 2007 (Released:2007-04-12)
参考文献数
29

In this article, reaction volumes and pressure effects on protein reactions are discussed by means of the pulsed laser induced transient grating (TG) spectroscopy. By the TG method, temporal profile of the protein reaction volume has been determined for the non-reversible reaction process. For examples, TG studies on the photo-chemical process of carboxymyoglobin and photoactive yellow protein are introduced. The reaction volume for each process has been determined, which can not be studied by the other spectroscopic methods such as transient absorption method. A high pressure optical system, which enabled us to measure the pressure dependence of the reaction volume, has also been reported.
著者
赤石 實
出版者
日本高圧力学会
雑誌
高圧力の科学と技術 (ISSN:0917639X)
巻号頁・発行日
vol.13, no.1, pp.36-42, 2003 (Released:2003-07-15)
参考文献数
24
被引用文献数
3 4

The synthesis of commercially available polycrystalline diamonds (hereafter PCD) with metallic and non-metallic sintering agents and their physical properties were briefly introduced. The PCD with non-metallic sintering agents such as alkaline earth carbonates had excellent heat-resistant properties, but because of the higher viscosity of molten carbonate, it is very difficult to infiltrate into the diamond layer with a grain size below 5 μm. In this article, recent advances in the synthesis of a fine-grained PCD under a static high pressure of 7.7 GPa were reviewed. Especially, experimental techniques such as sample assembly, pretreatment of natural diamond powder, etc, and sintering agents for the synthesis of PCD with a grain size from submicron to 100 nm were described.