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Wyświetlanie 1-15 z 828
Tytuł:
What influences child dietary diversity? Empirical evidence from Sinda district of Eastern Zambia
Autorzy:
Mulenga, C.B.
Powiązania:
https://bibliotekanauki.pl/articles/43210.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
human nutrition
diet
child
dietary diversity
food security
empirical evidence
Sinda district
Eastern Zambia
Zambia
Źródło:
Journal of Agribusiness and Rural Development; 2018, 50, 4
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magneto-rotatory compressible couple-stress fluid heated from below in porous medium
Autorzy:
Mehta, C. B.
Powiązania:
https://bibliotekanauki.pl/articles/178540.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
compressible couple-stress fluid
thermal convection
porous medium
rotation
magnetic field
Opis:
The study is aimed at analysing thermal convection in a compressible couple stress fluid in a porous medium in the presence of rotation and magnetic field. After linearizing the relevant equations, the perturbation equations are analysed in terms of normal modes. A dispersion relation governing the effects of rotation, magnetic field, couple stress parameter and medium permeability have been examined. For a stationary convection, the rotation postpones the onset of convection in a couple stress fluid heated from below in a porous medium in the presence of a magnetic field. Whereas, the magnetic field and couple stress postpones and hastens the onset of convection in the presence of rotation and the medium permeability hastens and postpones the onset of convection with conditions on Taylor number. Further the oscillatory modes are introduced due to the presence of rotation and the magnetic field which were non-existent in their absence, and hence the principle of exchange stands valid. The sufficient conditions for nonexistence of over stability are also obtained.
Źródło:
Studia Geotechnica et Mechanica; 2016, 38, 1; 55-63
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sustainable policies for the development of beekeeping in Romania
Autorzy:
Pocol, C.B.
Powiązania:
https://bibliotekanauki.pl/articles/572432.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
sustainable policy
development
beekeeping
Romania
European Union
bee product
marketing
standard
Opis:
The present research aims to achieve a retrospective analysis of sustainable policies for the development of beekeeping in Romania, an important sector that contributes to the development of rural areas. Romanian’s objectives regarding the development of this sector are based on the adoption of a clear vision and on the support of state, materialised by the National Beekeeping Program. The assessment of the program implementation reveals the following aspect: in the analyzed period 2008- 2010, an improvement of the access to funds can be observed, the level of absorption increasing from 16.8% in 2008 to 99.8% in 2010. The consequences following the funds accession are an increase of associative forms and a restoration of beekeeping exploitations. Nevertheless, there are still problems in the North East regions of the country, due to lack of information regarding the accession to funds. These problems could be solved by creating a platform that should constantly reunite beekeepers, researchers and specialists of the sector that share their experience and skills, establishing a dialogue between all the actors in the beekeeping chain.
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2011, 11(26), 3
2081-6960
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compressible analysis of Bénard convection of magneto rotatory couple-stress fluid
Autorzy:
Mehta, C. B.
Singh, M.
Powiązania:
https://bibliotekanauki.pl/articles/264669.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
konwekcja termiczna
pole magnetyczne
rotacja
ściśliwość
couple-stress fluid
compressibility
rotation
magnetic field
thermal convection
Opis:
Thermal Instability (Benard’s Convection) in the presence of uniform rotation and uniform magnetic field (separately) is studied. Using the linearized stability theory and normal mode analyses the dispersion relation is obtained in each case. In the case of rotatory Benard’s stationary convection compressibility and rotation postpone the onset of convection whereas the couple-stress have duel character onset of convection depending on rotation parameter. While in the absence of rotation couple-stress always postpones the onset of convection. On the other hand, magnetic field on thermal instability problem on couple-stress fluid for stationary convection couple-stress parameter and magnetic field postpones the onset of convection. The effect of compressibility also postpones the onset of convection in both cases as rotation and magnetic field. Graphs have been plotted by giving numerical values to the parameters to depict the stationary characteristics. Further, the magnetic field and rotation are found to introduce oscillatory modes which were non-existent in their absence and then the principle of exchange of stability is valid. The sufficient conditions for non-existence of overstability are also obtained.
Źródło:
International Journal of Applied Mechanics and Engineering; 2018, 23, 1; 91-105
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blood creatinine and some enzyme levels in four species of Indian carp fishes collected from a local aquatic body
Autorzy:
Kulkarni, R.
Pruthviraj, C.B.
Powiązania:
https://bibliotekanauki.pl/articles/11614.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2016, 60
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Motivating factors influencing institution and programme selection among first year bachelor students of agribusiness in Hungary
Czynniki decydujące o wyborze instytucji i programu przez węgierskich studentów pierwszego roku agrobiznesu
Autorzy:
Illes, C.B.
Kozma, T.
Powiązania:
https://bibliotekanauki.pl/articles/867153.pdf
Data publikacji:
2009
Wydawca:
The Polish Association of Agricultural and Agribusiness Economists
Opis:
The general changes in the Hungarian higher education in the last few years have strained the competition between the different institutions and, as a consequence, the situation of several traditional agricultural training institutions has become difficult. More institutions have recognized the growing importance to identify the candidates motivations in order to establish the institutions strategy and to keep and/or improve its competitiveness. In this paper we make a summary of the nationwide survey which was performed in 2008, and which was based by the results of the motivation enquiries regularly taken in our Faculty.
W artykule przedstawiono powody, dla których studenci pierwszego roku agrobiznesu na wydziale Nauk Ekonomicznych Uniwersytetu Rolnego w Gödöllő na Węgrzech zdecydowali o wyborze instytucji i programu nauczania.
Źródło:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2009, 11, 6
1508-3535
2450-7296
Pojawia się w:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrodynamic and hydromagnetic stability of two superposed elastico – viscous fluids of different permeability with dust in porous medium
Autorzy:
Singh, M.
Mehta, C. B.
Powiązania:
https://bibliotekanauki.pl/articles/266188.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Rayleigh-Taylor instability
magnetic field
suspended particles
Walters' B fluid
different permeability and porous medium
pole magnetyczne
materiały porowate
lepkość płynu
Opis:
Rayleigh-Taylor instability of two superposed Walters’ B has elastico-viscous fluids in a uniform magnetic field through a porous medium with different permeability been studied to include the suspended (dust) particles effect. Using normal mode technique a dispersion relation has been derived. The stability analysis has been carried out. The magnetic field stabilizes the unstable configuration for the wave number band K > K* in chich the system is unstable in the absence of the magnetic field. It is also found that for a potential stable arrangement for Walters B’ elastico-viscous fluids of different permeabilities in the presence of suspended particles through a porous medium the system is stable, whereas in the potentially unstable case instability of the system occurs.
Źródło:
International Journal of Applied Mechanics and Engineering; 2015, 20, 2; 407-416
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil strength of some Central Eastern Nigeria soils and effect of potassium and sodium on their dispersion
Autorzy:
Igwe, C.A.
Okebalama, C.B.
Powiązania:
https://bibliotekanauki.pl/articles/24225.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
sodium
physical property
linear extensibility
soil
coefficient
potassium
soil strength
Central-Eastern Nigeria
clay content
clay dispersion
Nigeria
Źródło:
International Agrophysics; 2006, 20, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Small shelly fossils from the argillaceous facies of the Lower Cambrian Forteau Formation of Western Newfoundland
Autorzy:
Skovsted, C.B.
Peel, J.S.
Powiązania:
https://bibliotekanauki.pl/articles/20504.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Brachiopoda
Cambrian
Forteau Formation
geological setting
Helcionellidae
Hyolitha
Lower Cambrian
Newfoundland
argillaceous facies
brachiopod
facies
fossil
helcionelloid mollusc
hyolith
mollusc
paleontology
small shelly fossil
systematics
Opis:
A diverse fauna of helcionelloid molluscs, hyoliths, and other small shelly fossils is described from limestone layers within the Forteau Formation of the Bonne Bay region in western Newfoundland. The fauna is dominated by internal moulds of various molluscs and tubular problematica, but also includes hyolith opercula, echinoderm ossicles, and other calcareous small shelly fossils preserved by phosphatisation. Originally organophosphatic shells are comparatively rare, but are represented by brachiopods, hyolithelminths, and tommotiids. The fauna is similar to other late Early Cambrian faunas from slope and outer shelf settings along the eastern margin of Laurentia and may be of middle Dyeran age. The similarity of these faunas indicates that at least by the late Early Cambrian, a distinctive and laterally continuous outer shelf fauna had evolved. The Forteau Formation also shares elements with faunas from other Early Cambrian provinces, strengthening ties between Laurentia and Australia, China, and Europe during the late Early Cambrian. Two new taxa of problematic fossil organisms are described, the conical Clavitella curvata gen. et sp. nov. and the wedge−shaped Sphenopteron boomerang gen. et sp. nov.
Źródło:
Acta Palaeontologica Polonica; 2007, 52, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 828

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