Nickel-catalyzed carbonization of wood for coproduction of functional carbon and fluid fuels II: improved fuel quality of oil fraction and increased heating value of gas fraction     

Kyoko Suzuki  Tsutomu Suzuki  Yukio Takahashi  Mitsuhiro Okimoto  Tetsuo Yamada  Noriyasu Okazaki  Yuichi Shimizu  Masashi Fujiwara 《Journal of Wood Science》2009,55(1):60-68

The yields and properties of oil and gas fractions coproduced during carbonization of larch wood loaded with Ni 2%, Ni 2%+Ca 1%, and Ni 4% and without catalyst (None) at 700°–900°C were examined to clarify the catalytic effect in terms of conversion into fluid fuels. The net calorific value of oil occurred mainly below 500°C and increased in the order None < Ni 2% < Ni 4% < Ni 2%+Ca 1%, while the yield decreased in this order. The same order held for the production of gases enriched with hydrogen at 500°–700°C. Even above 800°C, markedly promoted evolution of hydrogen took place for all catalyst systems. These observations confirmed the effectiveness of nickel-catalyzed carbonization at 900°C, particularly Ni 2%+Ca 1%, for both upgrading of oil and gaseous fractions, although the quality of oil was not satisfactory. The catalysis of nickel with and without calcium is discussed on the basis of the modified Broid-Shafizadeh scheme, and the scheme was altered to adapt to the high temperature region where oil was no longer produced. Part of this study was presented at the 14th Annual Meeting of the Japan Institute of Energy, Suita, August 2005, and at the 18th Symposium, Session D, of the Materials Research Society of Japan, Tokyo, December 2007  相似文献   

Characterization and silencing of the fatty acid‐ and retinol‐binding Pp‐far‐1 gene in Pratylenchus penetrans          下载免费PDF全文

P. Vieira  K. Kamo  J. D. Eisenback 《Plant pathology》2017,66(7):1214-1224

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Olfactory plasticity is regulated by pheromonal signaling in Caenorhabditis elegans     

Yamada K  Hirotsu T  Matsuki M  Butcher RA  Tomioka M  Ishihara T  Clardy J  Kunitomo H  Iino Y 《Science (New York, N.Y.)》2010,329(5999):1647-1650

Population density-dependent dispersal is a well-characterized strategy of animal behavior in which dispersal rate increases when population density is higher. Caenorhabditis elegans shows positive chemotaxis to a set of odorants, but the chemotaxis switches from attraction to dispersal after prolonged exposure to the odorants. We show here that this plasticity of olfactory behavior is dependent on population density and that this regulation is mediated by pheromonal signaling. We show that a peptide, suppressor of NEP-2 (SNET-1), negatively regulates olfactory plasticity and that its expression is down-regulated by the pheromone. NEP-2, a homolog of the extracellular peptidase neprilysin, antagonizes SNET-1, and this function is essential for olfactory plasticity. These results suggest that population density information is transmitted through the external pheromone and endogenous peptide signaling to modulate chemotactic behavior.  相似文献   

Suppressive effects of the diethyl ether fraction from a brown alga <Emphasis Type="Italic">Sargassum fusiforme</Emphasis> on allergic and inflammatory reactions     

Yoshimasa Sugiura  Yuichi Kinoshita  Mahiko Abe  Noboru Murase  Ryusuke Tanaka  Teruo Matsushita  Masakatsu Usui  Ken-ichi Hanaoka  Masaaki Miyata 《Fisheries Science》2016,82(2):369-377

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<Emphasis Type="Italic">Pantoea ananatis</Emphasis> strains are differentiated into three groups based on reactions of tobacco and welsh onion and on genetic characteristics     

Kazutaka Kido  Masaru Hasegawa  Hiroyuki Matsumoto  Masaki Kobayashi  Yuichi Takikawa 《Journal of General Plant Pathology》2010,76(3):208-218

Ninety-six strains of Pantoea ananatis were isolated from 14 plant species including melon, rice, tea and other crops of economic importance. They were classified into three groups (group I, II, III) based on a welsh onion stabbing assay, tobacco infiltration test, and polymerase chain reaction to detect indole acetic acid (IAA) biosynthesis genes (iaaM and iaaH) and a cytokinin biosynthesis gene (etz). Group Ι strains were characterized as causing significant blight symptom on welsh onion and inducing a hypersensitive response (HR)-like reaction on tobacco leaves after 36–48 h and encompassed 20 isolates from foxtail millet, hydrangea, pineapple, river water and rice. These 20 isolates did not possess iaaM, iaaH, or etz genes. Group II, consisting of 34 melon isolates, harbored iaaM, iaaH and etz genes, but did not cause either blight on welsh onion or HR-like reaction on tobacco. Group III strains did not have the iaaM, iaaH, and etz genes, nor did they cause any reaction on welsh onion or tobacco. The 42 strains in group III were isolated from bamboo grass, Chinese silver grass, citrus, dogwood, melon, mugwort, silk tree, sweet corn, tea and welsh onion. Representative strains of the three groups were tested for pathogenicity on melon and rice. Group Ι strains caused palea browning on rice but not internal fruit rot on melon. On the contrary, group II strains did not cause disease on rice but caused internal fruit rot on melon. Group III strains were not pathogenic on rice or melon. These results suggested that the host range of P. ananatis may be predicted by the reactions of welsh onion and tobacco and detection of iaaM, iaaH and etz genes. These tools may serve as rapid tests to identify the pathogenicity groups of P. ananatis.  相似文献   

Diversity and distribution of indigenous soybean-nodulating rhizobia in the Okinawa islands, Japan   总被引：1，自引：1，他引：0  

Koutaro SUZUKI  Hiroko OGURO  Takeo YAMAKAWA  Akihiro YAMAMOTO  Shoichiro AKAO  Yuichi SAEKI 《Soil Science and Plant Nutrition》2008,54(2):237-246

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Erratum to: Water management strategies for hydropower annexation at existing irrigation dams in Japan     

Ueda  Tatsuki  Goto  Masahiro  Namihira  Atsushi  Hirose  Yuichi 《Paddy and Water Environment》2017,15(3):697-697

Paddy and Water Environment -  相似文献   

Occurrence of blood disease of banana in Sumatra,Indonesia     

Satoko?Kusumoto  Titik N.?Aeny  Subli?Mujimu  Cipto?Ginting  Takashi?Tsuge  Shinji?Tsuyumu  Yuichi?TakikawaEmail author 《Journal of General Plant Pathology》2004,70(1):45-49

Since 1991, the sudden death of cultivated banana plants has been widely observed in the southern region of Sumatra Island, Indonesia. Wilting from loss of petiole and midrib turgidity, yellowing, and necrosis of leaves was followed by death of the whole plant. Reddish brown bacterial ooze exuded from the cut surface of infected pseudostems and fruits. The colony appearance of the isolated bacterium was similar to that of Ralstonia solanacearum. The bacterium was pathogenic to banana plants but not to tomato. Its bacteriological properties agreed with those of blood disease bacterium (BDB) of banana described previously. The 16S rDNA sequence of strain Banana E had conserved bases characteristic of BDB. Based on these results, the causal agent was identified as BDB, which is a close relative of Ralstonia. The isolates have resistance against antibiotics, such as chloramphenicol and tetracycline.The nucleotide sequence data reported are available in the DDBJ/EMBL/GenBank databases under the accession number AB095535  相似文献   

Allele frequency distribution of the canine dopamine receptor D4 gene exon III and I in 23 breeds     

Ito H  Nara H  Inoue-Murayama M  Shimada MK  Koshimura A  Ueda Y  Kitagawa H  Takeuchi Y  Mori Y  Murayama Y  Morita M  Iwasaki T  Ota K  Tanabe Y  Ito S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2004,66(7):815-820

Various canine breeds are remarkably different from each other not only in their sizes and shapes but also in behavioral traits, suggesting that some of them are under genetic control. Although dopaminergic neurotransmission system is considered to affect animal behavior, little is known about related genes in canine. Relations between specific alleles in polymorphic regions of the dopamine receptor D4 gene (DRD4) and personality or psychiatric disorders have been reported in humans, and we first found polymorphism in exon III region of the gene in 4 canine breeds. In this study we surveyed allele frequency distribution in 23 breeds including a total of 1,535 unrelated individuals. In exon III, 8 alleles including a novel allele were identified. A group of breeds in which the alleles 447b, 498 and 549 were frequent tended toward high scores in aggression-related behavioral traits than that with frequent alleles 435 and 447a. Moreover, a polymorphism based on 24 bp insertion/deletion was found in exon I region for the first time in dogs. This information may be of use for candidate gene studies of behavioral variation in dogs.  相似文献   

An experimental study of apico-aortic valved conduit (AAVC) for surgical treatment of aortic stenosis in dogs     

Hirao H  Inoue T  Hoshi K  Kobayashi M  Shimamura S  Shimizu M  Tanaka R  Takashima K  Mori Y  Noishiki Y  Yamane Y 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2005,67(4):357-362

A new valved conduit was developed using a canine aortic valve. The bioprosthetic valve was fixed with glutaraldehyde and epoxy compound (Denacol-EX313/810). A vascular graft composed of ultra-fine polyester fiber (10 mm in diameter, 200 mm in length) was used. Four dogs underwent apico-aortic valved conduit (AAVC) implantation and aortic banding (bypass group, BG), while another 4 dogs underwent aortic banding without AAVC implantation (control group, CG). Cardiac catheterization and angiocardiography were performed for assessment of hemodynamics 2 weeks and 6 months after surgery. Left ventricular systolic pressure, left ventricular end-diastolic pressure and the left ventricular-aortic pressure gradient differed significantly (P<0.01) between the BG and CG dogs. Left ventricular angiocardiography showed patency of the valved conduit in all the BG dogs. Echocardiography was performed before and 2, 4 and 6 months after surgery, and showed that while pressure overload caused concentric myocardial hypertrophy in the CG dogs, the left ventricle dilated eccentrically in the BG dogs. Furthermore, relief of left ventricular pressure overload by AAVC was maintained.  相似文献