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41.
A novel type of symmetry breaking is reported for the two-channel Kondo lattice where conduction electrons have spin and orbital (channel) degrees of freedom. Using the continuous-time quantum Monte?Carlo and the dynamical mean-field theory, a spontaneous breaking of the orbital symmetry is observed. The tiny breakdown of orbital occupation number, however, vanishes if the conduction electrons have the particle-hole symmetry. The proper order parameter instead is identified as a composite quantity representing the orbital-selective Kondo effect. The single-particle spectrum of the selected orbital shows insulating property, while the other orbital behaves as a Fermi liquid. This composite order is the first example of odd-frequency order other than off-diagonal order (superconductivity), and is a candidate of hidden order in f-electron systems. 相似文献
42.
Ichiro Nishizaki Hideki Katagiri Tomohiro Hayashida 《Central European Journal of Operations Research》2010,18(3):383-396
A multiattribute utility function can be represented by a function of single-attribute utility functions if the decision maker’s
preference satisfies additive independence or mutually utility independence. Additive independence is a preference condition
stronger than mutually utility independence, and the multiattribute utility function is in the additive form if the former
condition is satisfied, otherwise it is in the multiplicative form. In this paper, we propose a method for sensitivity analysis
of multiattribute utility functions in multiplicative form, taking into account the imprecision of the decision maker’s judgment
in the procedures for determining scaling constants (attribute weights). 相似文献
43.
Phosphorylimidates reacted with N-Boc imines in the presence of a catalytic amount of potassium hexamethyldisilazide, to afford the corresponding Mannich-type adducts in high yields. It was shown that, like sulfonylimidates, phosphorylimidates can function as ester equivalents. In contrast to sulfonylimidates however, phosphorylimidates exhibited high anti-selectivity even in low polar solvents. An explanation for the anti-selectivity is given. 相似文献
44.
45.
Junya Kobayashi Motoo Kinoshita Jun-ichi Kita Katsumi Yoshino 《International Journal of Infrared and Millimeter Waves》1996,17(7):1149-1163
Experimental infrared modulator elements have been fabricated utilizing the transient light scattering effect of ferroelectric liquid crystal with asymmetric waveform voltage drive. The new elements perform 80% modulation degrees at the 632.8nm. We have also achieved 30% modulation degrees in the 4 to 5µ m region where the strongest CO2 absorption bands exist. A new type of analyzer which monitors ambient air quality has been developed. This analyzer uses non-dispersive infrared absorption method and composes of a double-beam, a single detector and a pair of liquid crystal light modulator as the IR chopper. The detection has achieved 10ppm noise equivalent concentration. 相似文献
46.
Xiaozheng Zhao Kenneth E. Huffman Junya Fujimoto Jamie Rodriguez Canales Luc Girard Guangjun Nie John V. Heymach Igacio I. Wistuba John D. Minna Yonghao Yu 《Journal of the American Society for Mass Spectrometry》2017,28(10):2078-2089
With recent advances in understanding the genomic underpinnings and oncogenic drivers of pathogenesis in different subtypes, it is increasingly clear that proper pretreatment diagnostics are essential for the choice of appropriate treatment options for non-small cell lung cancer (NSCLC). Tumor tissue preservation in optimal cutting temperature (OCT) compound is commonly used in the surgical suite. However, proteins recovered from OCT-embedded specimens pose a challenge for LC-MS/MS experiments, due to the large amounts of polymers present in OCT. Here we present a simple workflow for whole proteome analysis of OCT-embedded NSCLC tissue samples, which involves a simple trichloroacetic acid precipitation step. Comparisons of protein recovery between frozen versus OCT-embedded tissue showed excellent consistency with more than 9200 proteins identified. Using an isobaric labeling strategy, we quantified more than 5400 proteins in tumor versus normal OCT-embedded core needle biopsy samples. Gene ontology analysis indicated that a number of proliferative as well as squamous cell carcinoma (SqCC) marker proteins were overexpressed in the tumor, consistent with the patient’s pathology based diagnosis of “poorly differentiated SqCC”. Among the most downregulated proteins in the tumor sample, we noted a number of proteins with potential immunomodulatory functions. Finally, interrogation of the aberrantly expressed proteins using a candidate approach and cross-referencing with publicly available databases led to the identification of potential druggable targets in DNA replication and DNA damage repair pathways. We conclude that our approach allows LC-MS/MS proteomic analyses on OCT-embedded lung cancer specimens, opening the way to bring powerful proteomics into the clinic. 相似文献
47.
Iwao Okamoto Masayuki TerashimaHyuma Masu Mayumi NabetaKaori Ono Nobuyoshi MoritaKosuke Katagiri Isao AzumayaOsamu Tamura 《Tetrahedron》2011,67(44):8536-8543
A series of cis-preferential aromatic N-methyl amides was designed and synthesized, and acid-induced conformational alteration of these compounds was investigated by means of NMR measurements in solution and X-ray crystal structure analysis. Compounds with a terminal N-methyl-N-(2-pyridyl) amide unit showed acid-induced conformational change from cis to trans, while those with a terminal N-methyl-2-pyridinecarboxamide unit showed a change of the carbonyl orientation from anti to syn with retention of cis conformation. 相似文献
48.
Atsushi TakemuraYasushi Katagiri Kenshu Fujiwara Hidetoshi Kawai Takanori Suzuki 《Tetrahedron letters》2011,52(11):1222-1224
The synthesis of the C22-C37 segment of prorocentin, isolated from the dinoflagellate Prorocentrum lima, was achieved. Because the relative stereochemical relationship between C26 and other stereocenters (C28/C31/C32 established as R*/R*/R*) in the C22-C37 region of natural prorocentin has not yet been determined, both epimers at C26 of the C22-C37 segment were selectively constructed. The synthesis was based on a 5-exo epoxide ring opening reaction to form an oxolane (E-ring), Brown asymmetric methallylation to install the C26-stereocenter, acryloylation of the resulting alcohol, and ring-closing olefin metathesis to establish the Z-olefin at C23/C24. 相似文献
49.
Saya Nakabayashi Katsunori Nagano Makoto Nakamura Junya Togawa Asami Kurokawa 《Adsorption》2011,17(4):675-686
The aim of this study is the development of a new adsorbent for the desiccant material which can be regenerated by the domestic
exhaust heat by using natural mesoporous material, Wakkanai siliceous shale. To improve this shale’s performance to adsorb/desorb
the water vapor, lithium chloride, calcium chloride or sodium chloride was supported into the mesopores by impregnating with
each chloride solution. Especially sodium chloride was effective to increase the water vapor adsorption amount 5–7 times of
that of natural shale in the relative humidity range from 50 to 70%. Moreover, the appropriate impregnating concentrations
were determined as 5wt% from the relationship between the maximum water vapor adsorption amount and the mesopore volume. Based
on these results, a new desiccant filter has been developed by impregnated original paper with lithium chloride and sodium
chloride. This paper contained shale powder in the synthetic fibers. The dehumidification performance of this filter was evaluated
under the simulated summer condition in Tokyo. From the cyclic adsorption/regeneration test, this shale and chlorides filter
could adsorb and desorb 60 g/h water vapor repeatedly at the regeneration temperature of 40°C. On the other hand, a silica
gel filter and a zeolite filter adsorbed and desorbed only 10 g/h and 25 g/h, respectively. These results suggested that the
shale impregnated with the chlorides has the best dehumidification ability as a new desiccant material. Further, the desiccant
filter made from the shale will achieve the effective use of the low temperature exhaust heat. 相似文献
50.
Shoji T Higashi J Ito S Okujima T Yasunami M Morita N 《Chemistry (Weinheim an der Bergstrasse, Germany)》2011,17(18):5116-5129
Ethynylated 2H-cyclohepta[b]furan-2-ones 5-15 have been prepared by Pd-catalyzed alkynylation of 3-iodo-5-isopropyl-2H-cyclohepta[b]furan-2-one (2) with the corresponding ethynylarenes or the reaction of 2-iodothiophene with 3-ethynyl-5-isopropyl-2H-cyclohepta[b]furan-2-one (4) under Sonogashira-Hagihara conditions. Compounds 5-15 reacted with tetracyanoethylene in a formal [2+2] cycloaddition reaction, followed by ring opening of the initially formed [2+2] cycloadducts, cyclobutenes, to afford the corresponding 1,1,4,4-tetracyanobutadienyl (TCBD) chromophores 16-26 in excellent yields. The intramolecular charge-transfer interactions between the 2H-cyclohepta[b]furan-2-one ring and TCBD acceptor moiety were investigated by UV/Vis spectroscopy and theoretical calculations. The redox behavior of the novel TCBD derivatives 16-26 was examined by cyclic voltammetry and differential pulse voltammetry, which revealed multistep electrochemical reduction properties, depending on the number of TCBD units in the molecule. Moreover, a significant color change was observed by UV/Vis spectroscopy under electrochemical reduction conditions. 相似文献