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71.
An activated carbon membrane to be used in water treatments was developed and the decolorization of the coke furnace wastewater
was successfully demonstrated as a model case. The activated carbon membrane was prepared by carbonizing poly-vinydenchloride
(PVdC) and poly-vinylalcohol (PVA) microspheres aggregating on and within a ceramic pipe. The membrane developed in this work
was suspected to have a bidispersed structure, which made it possible to play the roles of both a porous membrane having the
molecular weight cut-off of about 10,000 and an activated carbon bed where the dissolved organics with low molecular weight
could be adsorbed. The activated carbon membrane developed in this work appears to be useful for compact water treatment processes. 相似文献
72.
A derivative of L-vancosamine, a carbohydrate component of the antibiotics vancomycin and sporaviridin, has been prepared from L-lactic acid in a highly stereoselective manner. 相似文献
73.
Akiyoshi Hishikawa Atsushi Iwamae Kennosuke Hoshina Mitsuhiko Kono Kaoru Yamanouchi 《Research on Chemical Intermediates》1998,24(7):765-784
The Coulomb explosion process of N2O in an intense laser-field (∼5 PW/cm2) has been investigated by the high-resolution time-of-flight (TOF) spectroscopy. Six two-body explosion pathways involving
the NO+, NO2+, N2
+ molecular ions have been securely identified from the momentum-scaled TOF spectra of the fragment ions. Assuming a linear
geometry, three-body explosion pathways were investigated by sequential and concerted explosion models. When the concerted model is adopted, the observed momentum distributions of six atomic ion channels; N+, N2+, N3+, O+, O2+ and O3+, were well fitted using the Gaussian momentum distribution with the optimized bond elongation factor of 2.2(3). From the
yields of individual Coulomb explosion pathways determined by the fit, the abundance of the parent ions, N2Oz+ (z=2–8), prior to the two- body and three-body explosion processes was found to have a smooth distribution with a maximum
at z∼3. 相似文献
74.
Magnetically Guided Protein Transduction by Hybrid Nanogel Chaperones with Iron Oxide Nanoparticles 下载免费PDF全文
Riku Kawasaki Dr. Yoshihiro Sasaki Dr. Kiyofumi Katagiri Dr. Sada‐atsu Mukai Dr. Shin‐ichi Sawada Prof. Dr. Kazunari Akiyoshi 《Angewandte Chemie (International ed. in English)》2016,55(38):11377-11381
Protein pharmaceuticals show great therapeutic promise, but effective intracellular delivery remains challenging. To address the need for efficient protein transduction systems, we used a magnetic nanogel chaperone (MC): a hybrid of a polysaccharide nanogel, a protein carrier with molecular chaperone‐like properties, and iron oxide nanoparticles, enabling magnetically guided delivery. The MC complexed with model proteins, such as BSA and insulin, and was not cytotoxic. Cargo proteins were delivered to the target HeLa cell cytosol using a magnetic field to promote movement of the protein complex toward the cells. Delivery was confirmed by fluorescence microscopy and flow cytometry. Delivered β‐galactosidase, inactive within the MC complex, became enzymatically active within cells to convert a prodrug. Thus, cargo proteins were released from MC complexes through exchange interactions with cytosolic proteins. The MC is a promising tool for realizing the therapeutic potential of proteins. 相似文献
75.
76.
77.
Dr. Ryohei Akiyoshi Hikaru Zenno Dr. Yoshihiro Sekine Dr. Manabu Nakaya Prof. Motoko Akita Dr. Daisuke Kosumi Prof. Leonard F. Lindoy Prof. Shinya Hayami 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(5):e202103367
Magnetoelectric (ME) materials exhibiting coupled electric and magnetic properties are of significant interest because of their potential use in memory storage devices, new sensors, or low-consumption devices. Herein, we report a new category of ME material that shows liquid crystal (LC), ferroelectric (FE), and field-induced single molecule magnet (SMM) behaviors. Co(II) complex incorporating alkyl chains of type [Co(3C16-bzimpy)2](BF4)2 ( 1 ; 3C16-bzimpy=2,2’-(4-hexadecyloxy-2,6-diyl)bis(1-hexadecyl-1H-benzo[d]imidazole)) displayed a chiral smectic C mesophase in the temperature range 321 K–458 K, in which distinct FE behavior was observed, with a remnant polarization (88.3 nC cm−2). Complex 1 also exhibited field-induced slow magnetic relaxation behavior that reflects the large magnetic anisotropy of the Co(II) center. Furthermore, the dielectric property of 1 was able to be tuned by an external magnetic field occurring from both spin-lattice coupling and molecular orientational variation. Clearly, this multifunctional compound, combining LC, FE, and SMM properties, represents an entry to the development of a range of next-generation ME materials. 相似文献
78.
79.
I. Eto M. Akiyoshi T. Matsunaga A. Miyake T. Ogawa 《Journal of Thermal Analysis and Calorimetry》2006,85(3):623-627
Hydrogen peroxide containing
impurities has caused a lot of explosion accidents. In this study, a simple
device that using a glass vessel was made, cupric chloride was added into
hydrogen peroxide, and properties of runaway reaction of hydrogen peroxide
were evaluated. As a result, when copper ion exists over 0.04%, 50 g of 30%-hydrogen
peroxide has caused runaway reaction. Besides, it has been confirmed that
the shape of the reactor and initial temperature influence runaway reaction. 相似文献
80.
Optimized experimental conditions of infrared p-polarized multiple-angle incidence resolution spectrometry (p-MAIRS) for the analysis of ultrathin films on glass have been explored. When the original MAIRS technique is employed for thin-film analysis on a substrate of germanium or silicon, which exhibits a high refractive index, an established experimental condition without optimization can be adapted for the measurements. On the other hand, the p-MAIRS technique that has been developed for analysis on a low-refractive-index material requires, however, optimization of the experimental parameters for a 'quantitative' molecular orientation analysis. The optimization cannot be performed by considering only for optics in the spectrometer, but for optics concerning the substrate should also be considered. In the present study, an optimized condition for infrared p-MAIRS analysis on glass has been revealed, which can be used for quantitative molecular orientation analysis in ultrathin films on glass. 相似文献