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  • 1
    Electronic Resource
    Electronic Resource
    Involvement of rooting factors and free IAA in the rootability of citrus species stem cuttings
    Amsterdam : Elsevier
    Scientia Horticulturae 51 (1992), S. 187-195 
    Details
    ISSN: 0304-4238
    Keywords: 'Oroblanco' ; 'Rangpur' ; avocado rooting promoter ; cuttage propagation ; indole-3-acetic acid
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0304-4238(92)90118-V
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  • 2
    Electronic Resource
    Electronic Resource
    Avocado rooting promoter (ARP) detection in Laurus nobilis L. and Magnifera indica L. based on gas chromatography
    Amsterdam : Elsevier
    Scientia Horticulturae 48 (1991), S. 323-328 
    Details
    ISSN: 0304-4238
    Keywords: cutting propagation ; mung bean rooting bioassay
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0304-4238(91)90142-L
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  • 3
    Electronic Resource
    Electronic Resource
    Clonal variability among Rosa indica rootstocks: morphology, horticultural traits and productivity of scions
    Amsterdam : Elsevier
    Scientia Horticulturae 53 (1993), S. 141-148 
    Details
    ISSN: 0304-4238
    Keywords: cutting production ; flower production ; rootability ; thorniness
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0304-4238(93)90144-F
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Polyethylene on Osteocalcin, Alkaline Phosphatase and Procollagen Secretion by Human Osteoblastic Cells (1998)
    Springer
    Calcified tissue international 62 (1998), S. 453-456 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Polyethylene — Osteocalcin — Alkaline phosphatase — Procollagen — Osteoblast.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. We have studied the direct effects of polyethylene particles on osteoblastic function in primary human bone cell cultures. The cells were obtained from trabecular bone fragments of patients undergoing knee reconstructive surgery. When the cells reached confluency, they were subcultured into two flasks, one untreated (control culture) and the other treated with polyethylene particles, and incubated until confluency. Osteoblastic function was evaluated by assaying osteocalcin, alkaline phosphatase, and C-terminal procollagen type I, with and without 1,25(OH)2D stimulation, in the cell-conditioned medium. We found that addition of polyethylene to these osteoblastic cell cultures induced higher levels of secreted osteocalcin after 1,25(OH)2D stimulation. Alkaline phosphatase levels increased whereas C-terminal procollagen type I levels decreased in the cell conditioned medium after polyethylene was added to the cultures. Treatment of the control cultures with 1,25(OH)2D stimulated alkaline phosphatase levels and decreased C-terminal procollagen type I. However, these osteoblastic markers in 1,25(OH)2D-treated cells did not change in cultures with polyethylene. This study demonstrates that polyethylene particles have a direct effect on osteoblastic markers in human bone cells in culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900459
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of Skeletal Site of Origin and Donor Age on Osteoblastic Cell Growth and Differentiation (1999)
    Springer
    Calcified tissue international 64 (1999), S. 280-286 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Human osteoblastic cells — Skeletal site — Aging.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. Bone loss with aging may be due, at least in part, to inadequate bone formation. Moreover, the process of bone aging is known to follow a different pattern throughout the skeleton. In this study, we examined the cell proliferation rate (area under the cell growth curve, AUC) and the secretion of C-terminal type I procollagen (PICP), alkaline phosphatase (ALP), and osteocalcin (OC) in primary cultures of osteoblastic cells from human trabecular bone. Osteoblastic cells were obtained for 168 donors (100 women and 68 men). Ninety-eight bone samples were obtained from subjects undergoing knee arthroplastia, 52 aged 50–70 years (64 ± 5) and 46 over age 70 (73 ± 2). Another 70 bone samples were obtained from subjects undergoing hip arthroplastia; 51 were 50–70 years old (64 ± 4) and 19 were over 70 (75 ± 5). Osteoblastic cells from the older donors had a lower proliferation rate and OC secretion than those from younger subjects. However, ALP secretion was higher in the former subjects, whereas PICP secretion was unchanged. Osteoblastic cells from hip had a lower proliferation rate than those from knee. PICP secretion was also lower and ALP secretion was higher in the former cells. In age-matched cell cultures, osteoblastic cells from the knee had higher proliferation rate and PICP secretion than osteoblastic cells from the hip. However, ALP secretion was lower in knee osteoblastic cells than those from hip only in the younger group. With aging, ALP secretion was found to increase in knee osteoblactic cells, whereas OC secretion decreased in osteoblastic cell cultures from the hip. Our findings suggest that bone loss with aging may be accounted for, at least in part, by a decreased osteoblastic cell proliferation and an increased osteoblastic maturation. In addition, our data indicate that these changes with aging do not occur similarly at different skeletal sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900619
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  • 6
    Electronic Resource
    Electronic Resource
    Activation energy in the static recrystallization of austenite (1991)
    Springer
    Journal of materials science 26 (1991), S. 5427-5432 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract By means of torsion trials, the influence of various alloying elements on the parametert 0.5 of Avrami's equation has been studied. It has been found that carbon accelerates the static recrystallization of the austenite and that the other elements, in solution or by forming precipitates, slow it down. It is verified that the activation energy is the parameter most sensitive to the chemical composition and its value has been defined in a collection of 11 steels of the C-Mn type and those, microalloyed with Nb and Ti. Finally an equation is proposed which allows the calculation of the activation energy as a function of the chemical composition of the steel with great accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553641
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  • 7
    Electronic Resource
    Electronic Resource
    Activation energy in the static recrystallization of austenite (1991)
    Springer
    Journal of materials science 26 (1991), S. 5427-5432 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract By means of torsion trials, the influence of various alloying elements on the parametert 0.5 of Avrami's equation has been studied. It has been found that carbon accelerates the static recrystallization of the austenite and that the other elements, in solution or by forming precipitates, slow it down. It is verified that the activation energy is the parameter most sensitive to the chemical composition and its value has been defined in a collection of 11 steels of the C-Mn type and those, microalloyed with Nb and Ti. Finally an equation is proposed which allows the calculation of the activation energy as a function of the chemical composition of the steel with great accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403940
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  • 8
    Electronic Resource
    Electronic Resource
    Influence of vanadium on the static recrystallization of austenite in microalloyed steels (1993)
    Springer
    Journal of materials science 28 (1993), S. 5317-5324 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Torsion tests were conducted to study the static recrystallization of three microalloyed steels manufactured by electroslag remelting (ESR) with different percentages of vanadium, 0.043%. 0.060% and 0.095%, respectively, and approximately equal percentages of the other alloyforming elements. It was seen that, in contrast to niobium, dissolved vanadium has no influence on the activation energy. The influence only becomes notable when the precipitates start to form and the activation energy increases rapidly, thus inhibiting recrystallization. The critical temperature at which inhibition commences was measured as a function of the vanadium content and the deformation performed, and in all cases it was lower than the dissolution temperature deduced from the solubility products for nitrides, mainly because the testing conditions lacked thermodynamic equilibrium. Finally, a comparison was made of the microstructures obtained in two commercial steels, namely a C-Mn type steel and a vanadium microalloyed steel. Both were subjected to the same cycle of successive deformations, whose temperatures were lower than the critical temperature. After the last deformation, a much harder austenite was obtained in the microalloyed steel than in the C-Mn steel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00570083
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  • 9
    Electronic Resource
    Electronic Resource
    Determination of precipitation–time–temperature (PTT) diagrams for Nb, Ti or V micro-alloyed steels (1997)
    Springer
    Journal of materials science 32 (1997), S. 1487-1492 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A method is described, developed in CENIM-CSIC, for studying the kinetics of strain induced precipitation in micro-alloyed steels. Using torsion tests, the statically recrystallized fraction has been determined for three Nb, V and Ti micro-alloyed steels at different temperatures and strains. When precipitation starts, the recrystallized fraction deviates from Avrami’s equation, making it possible to identify the moment at which precipitation starts (Ps) and finishes (Pf). In this way precipitation–time–temperature(PTT) curves can be drawn, showing the precipitation kinetics in graph form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018562202876
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  • 10
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    Laboratory verification of the buoyancy dependence of the carrying flow in a Maxey–Riley theory for inertial ocean dynamics (2020)
    American Institute of Physics
    Details
    Publication Date: 2020-07-01
    Print ISSN: 1070-6631
    Electronic ISSN: 1089-7666
    Topics: Physics
    Published by American Institute of Physics
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