Results 31 to 40 of about 567,158 (362)

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

Effect of root canal geometry and needle type on apical extrusion of irrigant: an ex vivo study

open access: yesActa Odontologica Turcica, 2022
Objective: The aim was to evaluate the effect of root canal geometry on the amount of apical extrusion of irrigant, by testing different tapers and needle types.
Büşra Serçe Fikirli   +2 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

High-dose-rate brachytherapy (interventional radiotherapy) in lip carcinoma with rigid needles: a simple technique with excellent results

open access: yesJournal of Contemporary Brachytherapy, 2022
Lip carcinoma has been treated for years with low-dose-rate (LDR) brachytherapy, achieving local control greater than 90%. Comparison between LDR and high-dose-rate (HDR) showed that they are equivalently efficient in local control, but HDR results in ...
Jose Luis Guinot   +4 more
doaj   +1 more source

COMPARISON OF POSITIVE ASPIRATION DURING INFERIOR ALVEOLAR NERVE BLOCK USING CONVENTIONAL METALLIC DENTAL SYRINGE VS. DISPOSABLE PLASTIC SYRINGE

open access: yesPakistan Armed Forces Medical Journal, 2020
Objective: To compare the frequency of positive aspiration during inferior alveolar nerve blocks using conventional metallic dental syringe and disposable 3cc plastic syringe and to observe the efficacy of aspiration of both syringe systems.
Bushra Mazhar   +5 more
doaj  

Concepts for augmented reality visualisation to support needle guidance inside the MRI

open access: yesHealthcare Technology Letters, 2018
During MRI-guided interventions, navigation support is often separated from the operating field on displays, which impedes the interpretation of positions and orientations of instruments inside the patient's body as well as hand–eye coordination.
André Mewes   +5 more
doaj   +1 more source

Needle phobia

open access: yesThe Bulletin of the Royal College of Surgeons of England, 2016
Each month we take a close look at a recent legal case with implications for the surgical profession.
openaire   +3 more sources

Accumulation of heavy metals in needles and bark of Pinus species

open access: yes, 2017
During the research, cumulative properties of conifer needles P. armandii, P. banksiana, P. mugo, P. nigra, P. sylvestris and P. wallichiana in reference to Cu, Ni, Mn, Fe, Zn and Cd were analysed, and the factors which have an impact on the chemical ...
A. Parzych   +4 more
semanticscholar   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

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