Results 31 to 40 of about 158,463 (212)

Numerical evaluation of the soil behavior during impact driving of pipe-piles [PDF]

open access: yes, 2019
During the impact driving of pipe-piles, the soil is influenced in different ways including the void ratio, stress distribution, and plugging formation.
Aubram, Daniel   +3 more
core   +1 more source

Impact of Plasma p‐tau181 on Cognition, Motor Phenotypes, and Disease Course in ALS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Phosphorylated tau181 (p‐tau181), an Alzheimer's disease biomarker, was recently evaluated in amyotrophic lateral sclerosis (ALS). We investigated plasma p‐tau181 in 202 ALS/ALS‐FTD patients and 94 healthy controls, assessing cognitive performance, motor function, and longitudinal dynamics.
Elisabeth Kasper   +25 more
wiley   +1 more source

Structure of the ATP-Synthase from Chloroplasts and Mitochondria Studied by Electron Microscopy [PDF]

open access: yes, 1988
The structure of the ATP-synthase, F0F1 , from spinach chloroplasts and beef heart mitochondria has been investigated by electron microscopy with negatively stained specimens.
Berden, Jan A.   +3 more
core   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

open access: yesAdvanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk   +7 more
wiley   +1 more source

Forschungsdaten in den Repositorien von FU Berlin, HU Berlin und TU Berlin. Ansätze zur Analyse von Metadaten

open access: yesBausteine Forschungsdatenmanagement
In diesem Beitrag werden die Metadaten von Forschungsdaten analysiert, die in den institutionellen Repositorien von Freie Universität Berlin, Humboldt-Universität zu Berlin und Technische Universität Berlin publiziert wurden.
Dorothea Strecker   +2 more
doaj   +1 more source

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan   +8 more
wiley   +1 more source

Entropies and Heat Capacities of Gaseous Selenium Molecules Sen (n = 5 ... 12) [PDF]

open access: yes, 1981
Thermodynamic functions are calculated for gaseous Se8 molecules from spectroscopic and structural data and listed for temperatures up to 3000 K. Entropy (S°) and heat capacity (Cp0) data for Sen molecules (n = 5, 6, 7, 9, 10, 11, 12) are obtained from ...
Steudel, Ralf
core   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

open access: yesAdvanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu   +8 more
wiley   +1 more source

Learning to Explore the Structure of Kinematic Objects in a Virtual Environment

open access: yesFrontiers in Psychology, 2015
The current study tested the quantity and quality of human exploration learning in a virtual environment. Given the everyday experience of humans with physical object exploration, we document substantial practice gains in the time, force, and number of ...
Marcus eBuckmann   +7 more
doaj   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

open access: yesAdvanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha   +14 more
wiley   +1 more source

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