Agent-based modeling of complex social–ecological feedback loops to assess multi-dimensional trade-offs in dryland ecosystem services     

Takafumi Miyasaka  Quang Bao Le  Toshiya Okuro  Xueyong Zhao  Kazuhiko Takeuchi 《Landscape Ecology》2017,32(4):707-727

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Seasonal variations in radiation and energy balance in a deciduous broad-leaved forest     

Ho-Taek Park  Shigeaki Hattori  Takafumi Tanaka  Gyung-Soo Cha 《Journal of Forest Research》1999,4(4):261-269

This study was conducted to document the effects of canopy change on radiation and energy balances in a deciduous broad-leaved forest. Global solar radiation was highly variable with a maximum close to 28.7 MJ m⁻² day⁻¹ and a minimum of about 0.7 MJ m⁻² day⁻¹. The high daily variation of net radiation was the result of the frequency and duration of rainfall. The mean annual albedo in this study site was 0.126. Seasonal variation of albedo was characterized by steadily decreasing values with leaf-fall, but at the time when new leaves sprouted the trend did turn upwards. The mean annual radiation efficiency at this study site was 0.564, and the seasonal variation of the radiation efficiency was dependent upon the net long-wave radiation rather than albedo. This study also illustrated the seasonal variation of the proportion of the actual evaporation to the equilibrium evaporation as a means for estimating the latent heat flux from forest using the equilibrium evaporation model. Seasonal variation of the proportion of the actual evaporation to the equilibrium evaporation reflected the physiological and productive activities of trees. Latent heat flux dominated the energy balance and, in particular, reached about 96% of net radiation in July.  相似文献   

Cost–profit analysis of Japanese-type set-net through technology transfer in Rayong,Thailand     

Nopporn Manajit  Takafumi Arimoto  Osamu Baba  Seiichi Takeda  Aussanee Munprasit  Kamolrat Phuttharaksa 《Fisheries Science》2011,77(4):447-454

The Japanese type of set-net, Otoshi-ami, was introduced to Thailand in 2003 with the aim of assessing its feasibility as a sustainable coastal fisheries management tool for the empowerment of coastal fishers’ communities. All preparations for constructing and installing the set-net in the coastal waters off Mae Rumpheung beach, Rayong Province, Thailand, were carried out by local fishers, with technical advice and support from national and international institutions. The gear was modified and developed to suit the conditions of the fishing ground and target species. Data on the catch and sales trends in Rayong using the set-net were collected for 7 years for statistical analysis; during this period, the gear design and marketing strategies were improved. Simulation analysis for evaluating the cost–profit bases was conducted to establish a model for set-net technology transfer in Southeast Asia, based on differing numbers of fishers and operation days. The simulation results show the required size of the average daily catch to cover the total cost according to the average unit price, where the economic return point is an average catch of 128 kg, based on a unit price of 25 Baht/kg (0.83 USD/kg), with ten fishermen and a daily operation cost of 3,200 Baht (USD 106.17).  相似文献   

Principles of Radiation Chemistry          下载免费PDF全文

M. Fujimoto 《The Canadian veterinary journal. La revue veterinaire canadienne》1971,12(6):135

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Ultrastructure of parathyroid glands of growing chickens with vitamin D deficiency rickets     

K Okada  Y Fujimoto  C Itakura  M Goto 《American journal of veterinary research》1983,44(4):697-704

Ultrastructural studies were conducted on the parathyroid glands (PTG) of 2- to 7-week-old nontreated control growing broiler chickens (group A, 6 chickens); the same aged chickens with experimentally induced vitamin D deficiency rickets (18 morbid chickens each from groups B, C, and D); and in 4- to 9-week-old chickens naturally affected with rickets (group E, 8 chickens). Four types of principal cells were classified in the PTG of clinically normal birds and in PTG of birds with secondary hyperparathyroidism as follows: Type I cell (small cell in the resting phase); type II cell (medium-sized cell with well-developed rough-surfaced endoplasmic reticulum in the synthesizing phase); type III cell (large cell with well-developed Golgi apparatus and cytoplasmic organelles in the packaging and secretory phase); and type IV cell (medium-sized cell with poor cytoplasmic organelles in the involuting phase). Many coated vesicles were observed in type II and type III cells. In young control chickens, principal cells of the PTG were considered in the resting phase; in older control chickens, there were increased numbers of cells in the synthesizing phase. In the vitamin D deficiency groups, principal cells were in the synthesizing and packaging and secretory phases. In birds with naturally occurring rickets, principal cells were in packaging and secretory phases, with a small number of cells in the involuting phase. The ultrastructural changes of the PTG from the initial to final phases in growing chickens with secondary hyperparathyroidism were demonstrated.  相似文献   

Oncogenicity of infectious canine hepatitis virus in hamsters     

T Kinjo  R Yanagawa  Y Fujimoto 《The Japanese journal of veterinary research》1968,16(4):145-158

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Effect of thymectomy on the initial cytolytic lesions and nerve demyelination of Marek's disease.     

N Goto  Y Fujimoto  K Okada  T Mikami  H Kodama  K Ichijo 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1979,26(1):61-72

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Radiolocalization of bovine lymphosarcoma cells in athymic mice, using a monoclonal antibody against tumor-associated antigens   总被引：1，自引：0，他引：1  

Y Aida  K Ochiai  K Ito  M Onuma  F Fujimori  Y Fujimoto  H Izawa 《American journal of veterinary research》1987,48(8):1181-1186

Mouse monoclonal antibody c 143 was purified and F(ab')2 fragments were generated by pepsin digestion and then radiolabeled with 125I. The 125I-labeled c 143 F(ab')2 fragments were injected into athymic mice bearing bovine lymphoid tumor cells. The fragments became preferentially localized in tumor tissues, but not in normal tissues, as determined by differential counting of tissue radioactivity. The fragments became localized specifically in those tumors that were reactive with c 143 in vitro, but did not become localized in unrelated tumors. Localization of labeled F(ab')2 fragments of a monoclonal antibody of the same isotype directed against Taka virus (a variant of Newcastle disease virus) was not observed in athymic mice bearing bovine lymphoid tumor cells. Tumors were detectable by radioimmunoscintigraphy, using radiolabeled c 143 F(ab')2 fragments, without background subtraction, and by use of silver-grain scattering in light microscopic autoradiography.  相似文献   

Virus particles (leukosis-sarcoma group like viruses) in the peripheral nerve and the skeletal muscle tissues with Marek's disease (fowl paralysis)     

K Okada  Y Fujimoto 《The Japanese journal of veterinary research》1970,18(1):21-29

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Ultrastructural Study on Colocalization of Glucagon-Like Peptide (GLP)-1 with GLP-2 in Chicken Intestinal L-Cells     

Kei NISHIMURA  Kohzy HIRAMATSU  Mohammad M. MONIR  Chihiro TAKEMOTO  Takafumi WATANABE 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2013,75(10):1335-1339

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