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  • Articles  (122)
  • 2010-2014  (73)
  • 1995-1999  (49)
  • 1920-1924
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (122)
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  • Articles  (122)
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  • 1
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    A Kinetic Analysis of the Changes in Infra-Red Spectra of Mechanical Pulps During Irradiation (1995)
    De Gruyter
    Details
    Publication Date: 1995-01-01
    Print ISSN: 0018-3830
    Electronic ISSN: 1437-434X
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by De Gruyter
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Microbial degradation of paraquat sorbed to plant residues. (1995)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 43 (1995), S. 1343-1347 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00053a040
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  • 3
    Electronic Resource
    Electronic Resource
    Carbon Dioxide Inhibition of Escherichia coli and Staphylococcus aureus on a pH-adjusted Surface in a Model System (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 64 (1999), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Growth of Escherichia coli and Staphylococcus aureuson the surface of Trypticase Soy Agar (TSA) packaged with various CO2 partial pressures (0, 20, 40, 60, 80, 100%, balance N2) was compared to the control (N2 100%) on TSA in which the pH was adjusted to equal that in CO2 atmospheres at 15°C and 30°C. At 15°C, the biostatic effect was noted with all CO2 partial pressures for both species. At 30°C, the biostatic effect of CO2 was almost completely nullified for E. coli, but that for S. aureus was still effective. S. aureus was more sensitive to the inhibitory effects of CO2 than E. coli at both the temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1999.tb15902.x
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  • 4
    Electronic Resource
    Electronic Resource
    Cellulose/poly(acryloyl morpholine) composites: synthesis by solution coagulation/bulk polymerization and analysis of phase structure (1998)
    Springer
    Cellulose 5 (1998), S. 123-134 
    Details
    ISSN: 1572-882X
    Keywords: cellulose ; poly(acryloyl morpholine) ; composite ; interpenetrating polymer network
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Cellulose/poly(acryloyl morpholine) (CELL/PACMO) compo sites were synthesized by bulk polymerization in the gel state of cellulose impregnated with reactive ACMO monomer. The thermal transition behaviour and phase structure of the CELL/PACMO composites obtained in film form were investigated by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and solid-state 13C NMR spectroscopy. For compositions rich in PACMO (CELL ≤ 30 wt %), it was revealed by DSC and DMA that the synthesized samples gave a composition-dependent Tg value higher than that of PACMO homopolymer, and the magnitude of the lowering of their dynamic modulus E′ in the glass transition region became extremely small in comparison with the corresponding drop in E′ noted for plain PACMO samples. These observations were interpreted as being due to the development of an interpenetrating polymer network (IPN)-type organization, resulting from successful fixation of an original netw ork structure of cellulose gels into the polymerized bulks. From the measurements of proton spin-lattice relaxation times in the NMR study, the IPN-like composites were estimated to be substantially homogeneous on a scale of a few nanometers. 0969--0239 © 1998 Blackie Academic & Professional
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009224931504
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  • 5
    Electronic Resource
    Electronic Resource
    Blends of poly(∈-caprolactone) with cellulose alkyl esters: effect of the alkyl side-chain length and degree of substitu tion on miscibility (1997)
    Springer
    Cellulose 4 (1997), S. 131-145 
    Details
    ISSN: 1572-882X
    Keywords: cellulose alkyl esters ; poly(∈-caprolactone) ; blends ; miscibility ; DSC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Cellulose alkyl esters, CELL- OCOCnH2n+1(n = 1 ∼ 6), were synthesized by a homogeneous reaction of cotton cellulose with different acyl chlorides in N,N-dimethylacetamide--lithium chloride solution. The miscibility of the esterified celluloses with poly(∈-caprolactone) (PCL) was investigated, mainly through thermal analysis by differential scanning calorimetry (DSC). A polymer pair, cellulose butyrate (CB)/PCL, showed the highest miscibility of all the binary blends examined here; this is usual when relatively high-substituted esters (DS ≥ 2.0) are used as the respective component. The butyl ester derivatives with DS ≤ 1.5 showed poor miscibility with PCL
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018475520600
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  • 6
    Electronic Resource
    Electronic Resource
    Anaerobic reoxidation of Mn2+, Fe2+, S0 and S2– in submerged paddy soils (1997)
    Springer
    Biology and fertility of soils 25 (1997), S. 302-306 
    Details
    ISSN: 1432-0789
    Keywords: Key words Anaerobic reoxidation ; Denitrification ; Iron reduction ; Methane ; Successive reduction ; Sulfur oxidation ; Wetland soil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Anaerobic reoxidation of reduced products in paddy soils was investigated. Ferrous iron (Fe2+) and monosulfide ion (S2–) added to the soil chemically reduced MnO2 to Mn2+, and MnO2 and Fe(OH)3 to Mn2+ and Fe2+, respectively, where Fe2+ and S2– were considered to be oxidized to Fe3+ and S0. Elemental sulfur was oxidized to sulfate by anaerobic incubation with NO3 – MnO2 and Fe(OH)3. A new conceptual model for the reduction processes in submerged paddy soil including the reoxidation processes of reduced products, in which soil heterogeneity in paddy fields was taken into consideration, was proposed based on the results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740050319
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  • 7
    Electronic Resource
    Electronic Resource
    Methane emission fluxes from rice paddies and the methane productive potential in the soils (1997)
    Springer
    Nutrient cycling in agroecosystems 49 (1997), S. 129-138 
    Details
    ISSN: 1573-0867
    Keywords: methane emission ; productive potential ; seasonal variation ; total CO2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract We estimated the productive potential of methane in paddy soils by anaerobically incubating soils in the laboratory. In addition, we determined the emission fluxes from the rice paddies through rice plants during the whole growth period, according to the methods suggested by Cicerone & Shetter (1981). The results showed that the total amounts of methane emission from rice paddies were very close to the productive potential of the soils and suggested that the large parts of methane emitted from rice paddies originated from the productive potential of methane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009750106640
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  • 8
    Electronic Resource
    Electronic Resource
    Sources of methane emitted from paddy fields (1997)
    Springer
    Nutrient cycling in agroecosystems 49 (1997), S. 153-161 
    Details
    ISSN: 1573-0867
    Keywords: contribution ; methane flux ; photosynthate ; rice straw ; soil organic matter ; soil properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Soil organic matter, roots (photosynthates) and applied organic materials (rice straw etc.) are the main sources of methane (CH4) emitted from paddy fields. The potential CH4 production in Japanese paddy fields were estimated from chemical properties of paddy soils of respective soil series, their acreage and thermal regimes during the rice growing period. The estimated amounts of potential CH4 production were from 24 to 54 kg-C ha-1 among 7 Districts in Japan, which are around one fifth of the amounts of CH4 emission observed from paddy fields in the world. 13CO2 uptake pot experiments were carried out three times from Aug. 8 to Sept. 25 to the treatment without rice straw applications in 1993 and four times from June 30 to Sept. 13 to the treatments with and without rice straw applications in 1994 to estimate the contribution of photosynthesized carbon to CH4 emission. The contribution percentages of photosynthesized carbon to the total CH4 emitted to the atmosphere were calculated to be 22% and 29-39% for the entire growth period in the treatments with and without rice straw applications, respectively. The relationship between the amount of CH4 emission to the atmosphere from submerged paddy soils with rice plants and the application level (0-8 g kg-1) of rice straw in soil was investigated in a pot experiment. The increase (Y) in cumulative amounts of CH4 with the increase in the application level of rice straw was formulated with a logistic curve: Y=k[a/(1 +be-cx)]; x, application level of rice straw; k, a coefficient for relative CH4 emission. Since the seasonal variations in coefficients a, b and c in the equation were also formulated as the function of the sum of effective temperature (E, Σ (T-15); T, daily average temperature), Y from any paddy soil by any level of rice straw application was known to be estimated by the equation: Y=k[a(E)/(1 +b(E)e-c(E)x)].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009790920271
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  • 9
    Electronic Resource
    Electronic Resource
    Aerodynamic sound and self-excited vibration of circular saw with step thickness I: Comparison of dynamic characteristics between the common circular saw and the circular saw with step thickness (1998)
    Springer
    Journal of wood science 44 (1998), S. 177-185 
    Details
    ISSN: 1611-4663
    Keywords: Step thickness ; Aerodynamic sound ; Whistling noise ; Self-excited vibration ; Saw-tooth thicknes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The natural frequencies, aerodynamic noise, whistling noise, and self-excited vibration between the common circular saw with uniform thickness and the circular saw with step thickness (thin on its outer part and thick on its inner part) were researched during idling. The natural frequencies of the circular saw with step thickness increased with an increase in the thickness and in the radius of the thick part. The frequencies of the circular saws with step thickness (thick at the inner part) were higher than that of the thin circular saw with a uniform thickness of 0.5mm. The aerodynamic sound pressure level induced from circular saw teeth increased with an increase in the tooth thickness. The whistling noise and self-excited vibration easily occurred in the thick circular saws (1.5, 2.0, and 2.5mm). The whistling sound pressure level and the vibration amplitude increased with an increase in the thickness of the saw. None of the designed circular saws with step thickness generated whistling noises or self-excited vibration during idling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00521960
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  • 10
    Electronic Resource
    Electronic Resource
    Hydrogasification of wood for high heating-value gas production X: Effect of pretreatment of Japanese oak bark by HNO3 oxidation on subsequent iron-catalyzed hydrogasification (1999)
    Springer
    Journal of wood science 45 (1999), S. 76-83 
    Details
    ISSN: 1611-4663
    Keywords: Oak bark ; Hydrogasification ; HNO3 oxidation pretreatment ; Iron catalyst
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Japanese oak bark, which is one of the most difficult woody biomass materials for iron-catalyzed lowtemperature (〈700°C) hydrogasification, was subjected to HNO3 oxidation as the pretreatment after prewashing with water. The effect was compared with that of HCl demineralization from four points of view: (1) removal of catalyst poisons; (2) development of porosity in the cell tissue; (3) introduction of ion-exchanged iron; and (4) reduction of nitrogen and sulfur. It was found that HNO3-oxidized oak bark char loaded with iron by the ion-exchange method gave a satisfactory reactivity in agreement with the corresponding larch bark char previously used. Also, the oak bark char contained only small amounts of nitrogen and sulfur. These situations confirmed the high suitability of oxidation pretreatment combined with water prewashing for woody biomass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00579527
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