Results 21 to 30 of about 4,465,467 (324)

Vertical integration and firm boundaries : the evidence [PDF]

open access: yes, 2007
Since Ronald H. Coase's (1937) seminal paper, a rich set of theories has been developed that deal with firm boundaries in vertical or input–output structures.
Alchian Armen A   +31 more
core   +1 more source

Serological estimation of the level of cross-fertilization in the monoecious liverwort Pellia epiphylla n = 9

open access: yesActa Societatis Botanicorum Poloniae, 2014
Using protein antigens as markers, antigenic differentiation of progenies obtained from individual sporangia was examined. The experiments were expected to permit estimation of cross-fertilization frequency in the monoecious liverwort species, Pellia ...
Wiesław Prus-Głowacki   +1 more
doaj   +1 more source

Design Worlds and Science and Technology Studies

open access: yesTecnoscienza, 2015
Design is a notoriously ambiguous word in English. Similarly, it is also an ambiguous research field for Science and Technology Studies (STS). Introducing the special section A Matter of Design, the paper discusses the place of design in the overall ...
Paolo Volonté
doaj   +1 more source

Effect of Nitrogen Fertilization on Tree Growth and Nutrient Content in Soil and Cherry Leaves (Prunus cerasus L.)

open access: yesAgriculture, 2023
Nitrogen fertilization ensures the proper growth of trees. The aim of the study was to evaluate the impact of differentiated nitrogen fertilization on selected parameters.
Krzysztof Rutkowski, Grzegorz P. Łysiak
doaj   +1 more source

Rotation therapy for maniacs, melancholics and idiots: theory, practice and perception in European medical and literary case histories [PDF]

open access: yes, 2018
This article examines the development and use of rotation therapy in the emerging field of psychiatry at the beginning of the 19th century, and the cross-fertilization between British, Irish, German, French and other European proponents of ‘Cox’s Swing’.
Dickson, Sheila
core   +1 more source

In Vivo Pollen Tube Growth and Evidence of Self-Pollination and Prefloral Anthesis in cv. Macabeo (Vitis vinifera L.)

open access: yesAgriculture, 2020
Cultivar Macabeo is one of the most planted white grape varieties of northern Spain. A general agreement supports many Vitis vinifera cultivars possibly being self-fertile, although this seems to be a variety-dependent characteristic.
Francisco García-Breijo   +5 more
doaj   +1 more source

CROSS FERTILIZATION: UM DIRECIONAMENTO PARA A INOVAÇÃO [PDF]

open access: yes, 2016
O artigo discute a dinâmica da cross fertilization, que remete ao contexto das relações de contiguidade entre diferentes áreas do conhecimento. Identificam-se princípios condutores comuns que direcionam o pensamento projetual, bem como elementos que agem
Conti, GIOVANNI MARIA   +1 more
core   +1 more source

Comparative study of the fecundity and fertility of Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848) in a laboratory through self-fertilization and cross-fertilization Estudo comparativo da fecundidade e fertilidade de Biomphalaria glabrata (Say, 1818) e Biomphalaria straminea (Dunker, 1848) em laboratório por autofecundação e fecundação cruzada

open access: yesRevista do Instituto de Medicina Tropical de São Paulo, 2004
The aim of this study was to compare the fecundity and fertility of B. glabrata and B. straminea by cross- and self-fertilization. To attain this objective, laboratory-raised strains of B. glabrata and B. straminea were used.
Marta Julia F.S. Costa   +2 more
doaj   +1 more source

Breeding and productive qualities of ducks of the local population in northern Kazakhstan [PDF]

open access: yesBrazilian Journal of Biology, 2023
The production of duck meat in the republic was previously based on the use of 4-5 lines and populations of the Beijing breed, where the Medeo cross lines (M-1 paternal and M2-maternal) were the most widespread.
M. Saginbayeva   +4 more
doaj   +1 more source

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