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Deep desulfurization of gas oil over NiMoS catalysts supported on alumina coated USY-zeolite
Nakano, K.,Ali, S.A.,Kim, H.J.,Kim, T.,Alhooshani, K.,Park, J.I.,Mochida, I. Elsevier Scientific Pub. Co 2013 Fuel processing technology Vol.116 No.-
A series of NiMoS catalysts supported on USY-zeolite coated with different amounts of alumina were prepared and evaluated for deep hydrodesulfurization (HDS) of gas oil using a flow reactor system in single- and dual-bed configurations. The performance of these catalysts was compared to the conventional HDS catalyst as well as to NiMoS catalyst supported on physical mixture of alumina and USY-zeolite. Physically mixed alumina and USY zeolite showed high HDS activity, but it was accompanied with significant cracking of hydrocarbons. Activity and kinetic analysis showed that heavy coating of alumina on the zeolite resulted in much lower HDS and cracking activity. On the other hand, very light coating of alumina on the zeolite resulted in catalytic behavior similar to that of physical mixture of USY-zeolite and alumina. The general trend was an increase in HDS as well as hydrocracking activity with the decrease in amount of alumina coating over zeolite. Changes in product density, aromatic content, mid-boiling point, cetane index, and molecular weight also reflected this trend. The results of this study indicate that catalysts with neither too low nor too high amount of alumina coating on the USY zeolite are suitable to achieve the balance between high HDS and low cracking activities. The highlight of the present study is that it confirmed the deep HDS activity of USY containing alumina supports in the flow reactor system which is industrially applied. In addition, the stability test confirmed the long-term performance of alumina-coated zeolite catalyst.
Recent Advances in Multireference-Based Perturbation Theory
Nakano, Haruyuki,Hirao, Kimihiko Korean Chemical Society 2003 Bulletin of the Korean Chemical Society Vol.24 No.6
Accurate ab initio computational chemistry has evolved dramatically. In particular, the development of multireference-based approaches has opened up a completely new area, and has had a profound impact on the potential of theoretical chemistry. Multireference-based perturbation theory (MRPT) is an extension of the closed-shell single reference Møller-Plesset method, and has been successfully applied to many chemical and spectroscopic problems. MRPT has established itself as an efficient technique for treating nondynamical and dynamical correlations. Usually, a complete active space self-consistent field (CASSCF) wave function is chosen as a reference function of MRPT. However, CASSCF often generates too many configurations, and the size of the active space can outgrow the capacity of the present technology. Many attempts have been proposed to reduce the dimension of CASSCF and to widen the range of applications of MRPT. This review focuses on our recent development in MRPT.
Measurement of time-dependent CP asymmetries in B0→KS0ηγ decays
Nakano, H.,Ishikawa, A.,Sumisawa, K.,Yamamoto, H.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bansal, V.,Behera, P.,Beleñ,o, C.,Bhuyan, American Physical Society 2018 Physical Review D Vol.97 No.9
<P>We report a measurement of time-dependent CP violation parameters in B-0 -> K-S(0)eta gamma decays. The study is based on a data sample, containing 772 x 10(6)B(B)over-bar pairs, that was collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain the CP violation parameters of S = -1.32 +/- 0.77(stat) +/- 0.36(syst) and A = -0.48 +/- 0.41(stat) f 0.07(syst) for the invariant mass of the K-S(0)eta system up to 2.1 GeV/c(2).</P>
Nakano, Takafumi,Seo, Hong-Yul The Korean Society of Systematic Zoology 2014 Animal Systematics, Evolution and Diversity Vol.30 No.2
Specimens of the genus Orobdella Oka, 1895 from Korea, including various locations in the Korean Peninsula, were identified as Orobdella tsushimensis Nakano, 2011. Phylogenetic analyses using mitochondrial cytochrome oxidase subunit 1 (COI), ND1, $tRNA^{Cys}$, $tRNA^{Met}$, 12S rRNA, $tRNA^{val}$, and 16S rRNA markers show that the newly collected specimens form a monophyletic group with the known O. tsushimensis specimens. The genetic distance of COI of these specimens was in the range 0.4-6.6%. These results confirm that the newly collected specimens belong to O. tsushimensis. This is the first record of the genus Orobdella from the Korean Peninsula.
Research Trends in Japan on the Japanese Invasion of Korea in 1592(Imjin War)
Nakano Hitoshi(나카노 히토시) 고려대학교 한국사연구소 2013 International Journal of Korean History Vol.18 No.2
「朝鮮出兵」, 「文??慶長의 役」 또는 「壬辰倭?」에 대한 연구는 에도(江?)시대로부터 활발하게 진행되었으며, 근대에 한하여도 극히 방대한 학술?연구사를 보유한다. 그러나 1970년대까지는 반드시 충분한 실증연구가 진행되지 않았다. 豊臣政?論의 일환으로서 이론적인 요청에 대응하는 연구가 중심이었다. 80년대에 들어가면 北島万次氏 등에 의해 실증적인 연구가 개척되어, 90년대에는 관심 또한 다양화되고, 戰役에 대한 추이는 물론 兵站補給, 講和交涉, 「倭城」,降倭·義兵·被擄와 같은 조선사회에 관한 여러 문제 등, 전쟁이 가지는 여러 측면에 대해 실증적인 연구가 진행되었다. 다양한 시점에 의한 연구의 심화는 2000년대 이후에도 계속되었다. 본론에서는 70년대까지의 연구를 살펴보고, 80년대 이후에 대해서는 대략 10년마다 시간을 구분하여 연구동향을 서술하였다. Studies on the Japanese invasion of Korea in the late 16th century (known as “The Japanese Disturbance of Imjin” in Korea and “The Korean Campaign” or “The Bunroku Keicho Attack” in Japan) have been carried out actively since the Edo Period. However, it was not until the 1970s that demonstrative studies had been sufficientlycarried out. Most of the studies were carried out in connection with the need for a theoretical supplementation of the history as part of the Theory of Toyotomi Political Power. In the 1980s, historians, including by Manji Kitajima, started demonstrative studies. The demonstrative studies were expanded in the 1990s and included factors such as military supply, negotiations, Japanese fortresses, Japanese POWs, Korean militias/POWs, and matters concerning Korean society, in addition to the military campaign. The studies continued to deepen from diverse perspectives in the 2000s. This focuses on the research about the research that was carried out over the course of a decade, starting in the 1980s and thereafter, after dealing with the period until the 1970s separately.
Brake Lining Can be Applied to Super High Speed Vehicle
Nakano Satoru,Maejima Takashi 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
A new material was developed to achieve improvement of heat durability, improvement of wear resistance, stability of friction coefficient and reduction in aggression to counterpart, because it is difficult to maintain braking properties by using currently available materials in the train wagons used for high-speed transportation. As a result, the new material showed a stable wear resistance even in the speed range of 350km/h, where improvement was also confirmed in reduction of aggression to counterpart material by more than approximately 10%. This development was adopted for the brake lining in the Taiwan High Speed Rail project.
Nakano, Hideo,Okumura, Reiko,Goto, Chinatsu,Yamane, Tsuneo The Korean Society for Biotechnology and Bioengine 2002 Biotechnology and Bioprocess Engineering Vol.7 No.5
By the in vitro combinatorial mutagenesis, which is a sequential reaction of PCR mutagenesis and in vitro coupled transcription/translation with Escherichia coli S30 extract, S65 and E222 of green fluorescent protein of Aequarea victoria were comprehensively changed to all possible combinations of amino acids, thus totally 400 mutant (including a wild type) proteins were simultaneously produced and their fluorescent properties were analyzed. Although a few mutations had been reported so far at the 222nd position, replacement E222 to all other19 amino acids gave fluorescent signal to the mutants by changing Ser 65 to Ala together. Among the mutants, replacement to G, A, S, Q, H and C gave relatively high fluorescence. The in vitro combinatorial mutagenesis, therefore, has been proved valuable for comprehensive structure-function studies of proteins.
Bioavailability of Iron-fortified Whey Protein Concentrate in Iron-deficient Rats
Nakano, Tomoki,Goto, Tomomi,Nakaji, Tarushige,Aoki, Takayoshi Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.7
An iron-fortified whey protein concentrate (Fe-WPC) was prepared by addition of ferric chloride to concentrated whey. A large part of the iron in the Fe-WPC existed as complexes with proteins such as ${\beta}$-lactoglobulin. The bioavailability of iron from Fe-WPC was evaluated using iron-deficient rats, in comparison with heme iron. Rats were separated into a control group and an iron-deficiency group. Rats in the control group were given the standard diet containing ferrous sulfate as the source of iron throughout the experimental feeding period. Rats in the iron-deficiency group were made anemic by feeding on an Fe-deficient diet without any added iron for 3 wk. After the iron-deficiency period, the iron-deficiency group was separated into an Fe-WPC group and a heme iron group fed Fe-WPC and hemin as the sole source of iron, respectively. The hemoglobin content, iron content in liver, hemoglobin regeneration efficiency (HRE) and apparent iron absorption rate were examined when iron-deficient rats were fed either Fe-WPC or hemin as the sole source of iron for 20 d. Hemoglobin content was significantly higher in the rats fed the Fe-WPC diet than in rats fed the hemin diet. HRE in rats fed the Fe-WPC diet was significantly higher than in rats fed the hemin diet. The apparent iron absorption rate in rats fed the Fe-WPC diet tended to be higher than in rats fed the hemin diet (p = 0.054). The solubility of iron in the small intestine of rats at 2.5 h after ingestion of the Fe-WPC diet was approximately twice that of rats fed the hemin diet. These results indicated that the iron bioavailability of Fe-WPC was higher than that of hemin, which seemed due, in part, to the different iron solubility in the intestine.
Nakano, Yoshiharu,Ishiwata, Tetsuya,Yamaguchi, Satoshi,Toki, Masanori,Igarashi, Minoru,Usui, Yoshiharu,Miyamae, Hiroshi,Yamada, Yoichi,Yasuda, Heinosuke Korean Society of Photoscience 1999 Journal of Photosciences Vol.6 No.4
Various arylidene- or alkylidenemalononitriles are condensed with electrophilic ethylenes to obtain polycyanoaniline derivatives. All the anilines showed strong fluorescence and the fluorescence intensities was evaluated to the effect of substituents.