Results 121 to 130 of about 177,258 (265)

Modeling heterogeneity in production models: empirical evidence from individual farming in Poland [PDF]

open access: yes
This discussion paper deals with the estimation of a random coefficient model. The virtue of this approach is that it considers firm heterogeneity, which conventional SFA models do not.
Goraj, Lech   +2 more
core  

El polen de especies del género Nicotiana (Solanaceae) presentes en Chile: Evaluación de la utilidad de sus caracteres morfológicos como biomarcadores en estudios arqueológicos

open access: yesBoletín de la Sociedad Argentina de Botánica, 2016
Diversas sociedades americanas prehispánicas han utilizado el tabaco (Nicotiana spp.) en contextos sagrados, medicinales o recreativos. Las especies de Nicotiana contienen nicotina, alcaloide que es ingerido al fumar, masticar o inhalar la planta. El uso
Kathy Collao-Alvarado   +2 more
doaj   +1 more source

Biochemical and cytological studies of genetic transfer from the Mv genome of Aegilops ventricosa into hexaploid wheat [PDF]

open access: yes, 1978
A double interspecific oross {Triticum turgidum (AB) var. rubroatrum H-l-1 x Ae. ventvicosa (DM°) AP-l} x T.aestivum (ABD) cv. Almatense H-10-1S was carried out in 1950 by M.
Delibes Castro, Angeles   +2 more
core   +1 more source

Morphology and tructure of the pollen cone and pollen grain of the Araucaria species from Argentina [PDF]

open access: yes, 2008
The pollen cone and the pollen grain of the two Argentinean species of Araucaria are described with LM, SEM and TEM. Primordia of pollen cones are formed in April and May and reach maturity by mid-October in A. angustifolia (Bert.) O.
Caccavari, Marta Alicia   +2 more
core  

Moren Set Göllerinde Güncel Polen Dağılımı: Eğri Göl ve Çevresi (Geyik Dağları - Antalya)

open access: yesJeomorfolojik Araştırmalar Dergisi
Yosun ve göl yüzey örnekleri, hem günümüzdeki polen dağılımı ile iklim değişkenleri arasındaki ilişkiyi anlamaya hem de polen ve bitki örtüsü dağılımının, fosil polen kayıtlarının yorumlanmasında bir karşılaştırma modeli olarak kullanılmasına olanak ...
Gülan Güngör   +3 more
doaj   +1 more source

Oncosperma Tigillarium Merupakan Bagian Palino Karakter Delta Plain di Delta Mahakam, Kalimantan [PDF]

open access: yes, 2012
Delta Mahakam adalah salah satu delta terkenal sebagai penghasil minyak bumi. Delta ini termasuk tipecampuran yang dipengaruhi proses sungai dan pasang surut. Enam puluh sampel diambil dari delta plaindan delta front telah dianalisis.
Rahardjo, A. (AT)   +2 more
core  

Epigeic spiders of the pastures of northern Wielkopolska [PDF]

open access: yes, 2013
The fauna of epigeic spiders (Araneae) occurring on three different types of pastures in northern Wielkopolska was analysed. Studies were conducted from May 1992 to October 1993.
Szymkowiak, Paweł, Woźny, Marek
core  

Arbeidsmigratie in vieren. Bulgaren en Roemenen vergeleken met Polen. [PDF]

open access: yes, 2011
In januari 2007 traden Bulgarije en Roemenie toe tot de Europese Unie (EU). De toetreding van beide landen leidde tot een toename van het aantal Bulgaren en Roemenen in Nederland.
Engbersen, G.B.M. (Godfried)   +4 more
core   +1 more source

Die karitative Tätigkeit der katholischen Kirche im Schatten des Kommunismus in der VR Polen

open access: yesEuropean Journal of Mental Health, 2009
Charitable Activities in the Shadow of the Communist System in the People’s Republic of Poland: In addition to liturgy and preaching, charity is one of the most important tasks of the Church.
Robert J. Biel
doaj  

Directions in research of the oldest Polish press (1501–1729) [PDF]

open access: yes, 2012
This article contains a brief overview of the research on Polish press from the years 1501–1729, and discusses its directions and results conducted by historians and press experts after 1945.
Kolasa, Władysław Marek
core  

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