Results 21 to 30 of about 500,069 (263)

Differentation of Scots pine (Pinus sylvestris L.) seed orchard in Gidyle on basin of morphological needles trains

open access: yesActa Biologica, 2016
The subject of this study was to analyse the variation of Scots pine (Pinus sylvestris L.) seed orchard with regard to a complex of 9 morpho-anatomical traits of needles. The following measurements were carried out: needle length, number of resin canals,
Renata Słonimska-Walkowiak   +1 more
doaj   +1 more source

Татуировки алеутов: инструменты, краски, орнамент, смыслы

open access: yesИскусство Евразии, 2023
Традиция декорирования тела является одной из древнейших смысловых практик в истории человечества. В статье предлагается реконструкция традиции татуировок у алеутов, одного из древнейших народов Северной Пацифики.
Понкратова, И.Ю.   +2 more
doaj   +1 more source

How Placebo Needles Differ From Placebo Pills?

open access: yesFrontiers in Psychiatry, 2018
Because acupuncture treatment is defined by the process of needles penetrating the body, placebo needles were originally developed with non-penetrating mechanisms.
Younbyoung Chae, Ye-Seul Lee, P. Enck
semanticscholar   +1 more source

Needle placement errors: do we need steerable needles in interventional radiology?

open access: yesMedical devices, 2018
Purpose Accurate and precise needle placement is of utmost importance in interventional radiology. However, targeting can be challenging due to, eg, tissue motion and deformation.
T. D. de Jong   +5 more
semanticscholar   +1 more source

Stability of Norway spruce (Picea abies [L.] Karst.) stands in the Beskid Śląski and Beskid Żywiecki Mts. from the aspect of their nutrition status

open access: yesJournal of Forest Science, 2008
The aim of the present research was to determine the stability of spruce stands in the areas of threat to forest stability in the Beskid Śląski and Beskid Żywiecki Mts. in the light of their nutrition. In 2002 samples of soil and of one- and two-year-old
J. Barszcz, S. Małek
doaj   +1 more source

Influence of microwaves on the rate of the distillation and yield of etheric oil from the wooded greenery of conifers [PDF]

open access: yesHemijska Industrija, 2005
It is known that many plants represent valuable raw materials for technological processing and that there has been an increase in the use of medicinal, aromatic and spice plants as raw materials in industry.
Marjanović-Balaban Željka   +1 more
doaj   +1 more source

The application of microwaves in essential oil hydrodistillation processes [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2009
The influence of microwaves pre-treatment of raw plant materials (wooded greenery and fruits of conifers-fir, spruce, pine, juniper and Douglas fir) on the kinetics of the essential oil hydrodistillation using the Unger-type apparatus was studied.
P. Miletić   +2 more
doaj  

Photosynthetic apparatus of Siberian pine needles during the period of emerging from the state of winter dormancy in the conditions of the high-altitude zone of the Western Sayan [PDF]

open access: yesСибирский лесной журнал
Due to climate change, many species of coniferous trees, which are the main forest formers of the forests of Western and Eastern Siberia, have shifts in both latitudinal and altitudinal boundaries of the range.
N. V. Pakharkova   +4 more
doaj   +1 more source

Morphometric characteristics and the content of plastid pigments of the needles of Picea pungens depending on the distance from the highways

open access: yesBiosystems Diversity, 2017
This article examines the condition of the Picea pungens Engelm. plants at various distances from urban highways with high traffic intensity. The objects of the study were the trees P. pungens, whose age was about 35 years. The plants grow on four plots.
V. P. Bessonova, O. A. Ponomaryova
doaj   +1 more source

Differences in Needle Characteristics Between Leader and Return-stroke Stages of Positive Cloud-to-ground Lightning

open access: yes应用气象学报
Needle discharges, characterized by fine-scale filamentary plasma structures within lightning channels, represent a key manifestation of localized electric field intensification and intricate channel dynamics. Although previous case studies have reported
Wu Bin   +6 more
doaj   +1 more source

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