Comprehensive assessment of the clay mineralogical composition of lowland soils in West Africa   总被引：1，自引：0，他引：1  

Susumu Shin ABE  Tsugiyuki MASUNAGA  Sadahiro YAMAMOTO  Toshimasa HONNA  Toshiyuki WAKATSUKI 《Soil Science and Plant Nutrition》2006,52(4):479-488

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Structural identification of new curcumin dimers and their contribution to the antioxidant mechanism of curcumin     

Masuda T  Toi Y  Bando H  Maekawa T  Takeda Y  Yamaguchi H 《Journal of agricultural and food chemistry》2002,50(9):2524-2530

As a part of the research project on the elucidation of the chain-breaking antioxidant mechanism of natural phenolics against the oxidation of food components, curcumin, a main turmeric pigment, was investigated. A relatively high concentration of curcumin gave three dimers as radical termination products in addition to the coupling products with curcumin and the lipid hydroperoxide. The structural analysis of these dimers and quantitative analysis of their production rates revealed that radical-radical termination mainly occurred at the 2-position of curcumin. The contribution of the pathway for production of these dimers to the antioxidant mechanism of curcumin was estimated from the concentration-dependent data of the antioxidant activity and formation rates of these termination products. The A-A termination (dimer formation) was estimated to contribute at least about 40% of the entire antioxidant process against ethyl linoleate oxidation.  相似文献   

Influence of earthworm activity and rice straw application on the soil microbial community structure analyzed by PLFA pattern     

Yoshinari Enami  Seigo Okano  Hiroshi Yada  Yoshio Nakamura 《European Journal of Soil Biology》2001,37(4):269

The earthworm Pheretima hilgendorfi, one of the most common anecic species in Japan, abounds in soils with applied rice-straw residues. The influences of the worm’s activity and/or those of rice-straw application on the soil microbial community structure were studied using a microcosm approach. Low Humic Andosol was incubated with or without earthworms in a jar for a month after the following treatments: 1) no treatment, 2) chopped rice straw top-dressed on the soil and 3) rice straw incorporated into the soil. The soil NO₃^–-N level increased with the earthworms’ presence even in the soil without rice straw. The soil NH₄⁺-N level was by far the highest in the soil treated with worms and no rice straw. Amounts of total and bacterial PLFAs increased due to the earthworms’ presence when rice straw was incorporated. The proportion of unsaturated fatty acids increased in the earthworm treatment while the saturated fatty acids decreased, suggesting an increase in the Gram-negative bacterial proportion. The results of principal component analysis indicated that the rice straw and the earthworms affected the soil microbial community structure independently. Any direct influence of the PLFAs contained in the worms’ bodies and in the rice straw on the soil’s PLFA profile was thought to be small.  相似文献   

Comparison of the proteomes in sera between healthy Thoroughbreds and Thoroughbreds with respiratory disease associated with transport using mass spectrometry-based proteomics     

Yohei MINAMIJIMA  Hidekazu NIWA  Eri UCHIDA  Kazuo YAMAMOTO 《Journal of Equine Science》2021,32(1):11

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Successful measures to prevent the spread of bovine papular stomatitis in a dairy farm     

Masaki KATO  Daiki KAWASHIMA  Yui ITO  Osamu YAMAMOTO  Hiromi NAKAJIMA  Takuya OIZUMI  Kaori SHIMIZU  Yasuo INOSHIMA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(2):304

Nasal papules and oral ulcers were observed in calves that were group-housed at a dairy farm. The calves were diagnosed with bovine papular stomatitis (BPS) due to parapoxvirus (PPV) infection based on virologic examinations using polymerase chain reaction to detect PPV. To prevent the spread of BPS, we isolated the affected calves, made procedural changes so that the affected herd was managed after the healthy herd, disinfected the bedding with slaked lime, disinfected the stalls and fences with invert soap, and changed the animals’ feed to soft grass which does not damage the oral cavity. As a result, we succeeded in control the infection quickly.  相似文献   

The onset of matter-wave amplification in a superradiant Bose-Einstein condensate     

Schneble D  Torii Y  Boyd M  Streed EW  Pritchard DE  Ketterle W 《Science (New York, N.Y.)》2003,300(5618):475-478

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What is your diagnosis? Craniodorsal luxation of the atlas from its articulation with the occipital condyles     

Gross WR  Kimura YM  Fletcher DJ 《Journal of the American Veterinary Medical Association》2006,228(4):513-514

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Lignification in developing culms of bamboo <Emphasis Type="Italic">Sinobambusa tootsik</Emphasis>     

Taku Tsuyama  Natsumi Shimada  Taichi Motoda  Yasuyuki Matsushita  Yoshio Kijidani  Kazuhiko Fukushima  Ichiro Kamei 《Journal of Wood Science》2017,63(6):551-559

Bamboos are among the largest woody grasses and grow very rapidly. Although lignin is a crucial factor for the utilization of bamboo biomass, the lignification mechanism of bamboo shoots is poorly understood. We studied lignification in the bamboo Sinobambusa tootsik during culm development. Elongation growth began in May and ended in late-June, when the lignin content was approximately half that in mature culms. Thioacidolysis analysis indicated that p-hydroxyphenyl units in lignin formed even at late stages of lignification. The syringyl/guaiacyl ratio varied during culm development. Various lignin precursors were detected in developing culms by liquid chromatography–mass spectrometry. The ferulic acid content decreased from May to June, indicating that ferulic acid was utilized in early stages of cell wall formation. Monolignol glucosides were detected at early stages of lignification, whereas the contents of monolignols, coniferaldehyde, sinapaldehyde, p-coumaric acid, and ferulic acid peaked at later stages of lignification. Therefore, lignin precursors may be supplied differentially during the lignification process. In August, the rate of lignification decreased, although the contents of various lignin precursors peaked, implying that the rate-limiting step in the cessation of lignification in bamboo is transport or polymerization of lignin precursors, rather than their biosynthesis.  相似文献   

Effect of the liquid form of traditional Chinese medicine,Hozen-S,on gastric motility in dogs     

Yuta SHINOHARA  Mohamed ELBADAWY  Megumi YAMANAKA  Haru YAMAMOTO  Amira ABUGOMAA  Tatsuya USUI  Kazuaki SASAKI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(6):841

Juzen-taiho-to, a traditional Chinese herbal medicine, is used for patients with anorexia and fatigue in human medicine. In our previous study, granulated Juzen-taiho-to improved vincristine-induced gastrointestinal adverse effects through increasing gastric motility in dogs. As the effect of Hozen-S, the sweet liquid form of Juzen-taiho-to, on dog gastric motility has not been investigated, we examined the effect of administration of Hozen-S on gastric motility. Furthermore, we assessed dog plasma ghrelin level to further elucidate the mechanism of the effect of Hozen-S on gastric contraction. Finally, we assessed the palatability of Hozen-S compared to granulated Juzen-taiho-to and its effect on body weight in dogs. Administration of Hozen-S significantly increased gastric motility, plasma ghrelin concentration, and body weight. A palatability evaluation revealed that the dogs preferred Hozen-S to granulated Juzen-taiho-to. In conclusion, Hozen-S administration to dogs promoted gastric motility by raising plasma ghrelin levels. Considering these functional and palatability data, Hozen-S may replace granulated type Juzen-taiho-to and become a prominent traditional Chinese veterinary medicament.  相似文献