Results 61 to 70 of about 135,177 (268)

Väetamise mõju hariliku kuuse (Picea abies (L.) Karst) poogenditele Pauska seemlas / The effect of fertilization on Norway spruce (Picea abies (L.) Karst) grafts: a case study in Pauska seed orchard

open access: yesMetsanduslikud Uurimused, 2011
Altogether 197 grafts were studied in Pauska seed orchard in South-Estonia to find out the effect of the fertilization on Norway spruce grafts. The fertilization trials were carried out in May 1988 and 2006.
Kurm Malle   +2 more
doaj   +1 more source

AGE-SPECIFIC CONTENT OF CONDENSED TANNINS IN THE NEEDLES OF PICEA ABIES SSP. OBOVATA (LEDEB.) DOMIN

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
Siberian spruce (Picea abies ssp. obovata (Ledeb.) Domin) is one of the dominant species in north-taiga forests and changes in the chemical composition (e. g.
Natalia Artemkina
doaj   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Needles, Needles, Everywhere! [PDF]

open access: yesAnesthesiology, 2011
Michelle Petrovic   +3 more
openaire   +2 more sources

A Needle in a Haystack

open access: yesProceedings of the 2025 12th International Conference on Digital and Interactive Arts: Media Art Cultures, Communities & Territories
Needle in a Haystack is a robotic art installation that explores the intersection of robotics, artificial intelligence, big data, and environmental sustainability. Drawing inspiration from the idiom, the project features a robot tasked with finding a hidden needle in a haystack—a metaphor for the challenges AI systems face in locating critical ...
Varvara Guljajeva, Mar Canet Sola
openaire   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Altitudinal gradients of natural abundance of stable isotopes of nitrogen and carbon in the needles and soil of a pine forest in Nepal

open access: yesJournal of Forest Science, 2003
This paper deals with natural abundance of 15N and 13C in the soil and needles of the pine forest (Pinus roxburghii, Sargent) along an altitudinal gradient. The study area lies in the elevation range of 1,200 m to 2,200 m in Kathmanduvalley of Nepal. The
S.P. Sah, R. Brumme
doaj   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Comparison of Fe, Zn, Mn, Cu, Cd and Pb concentration in spruce needles collected in the area of Gdansk and Gdynia in Northern Poland

open access: yesEnvironmental Protection and Natural Resources, 2018
The aim of the investigation was to assess the utility of spruce needles as a potential material to be used for monitoring the contamination level of the environment of Tricity agglomeration (represented by Gdansk and Gdynia).
Konieczyński Paweł   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy