Results 41 to 50 of about 271,940 (302)

Diffusion‐based size determination of solute particles: a method adapted for postsynaptic proteins

FEBS Open Bio, EarlyView.
We present a diffusion‐based approach for measuring the size of macromolecules and their complexes, and demonstrate its use on postsynaptic proteins. The method requires fluorescein‐labelled protein samples, a microfluidic device that maintains laminar flow for said samples, a microscope recording the emitted fluorescent signals, and an analytic ...
András László Szabó, Eszter Nagy‐Kanta, Soma Varga, Edit Andrea Jáger, Csaba István Pongor, Mária Laki, András József Laki, Zoltán Gáspári   +7 more
wiley   +1 more source

Unrolling of Syngonium podophyllum: Functional Anatomy, Morphology and Modelling of Its Peltate Leaves

Advanced Biology, EarlyView.
The unrolling of the peltate leaves in Syngonium podophyllum is analyzed and quantified (left‐hand side to center). These measurements serve to verify a mathematical model for leaf unrolling based on the model used in Schmidt (2007). An additional formula for obtaining a layer mismatch from a prescribed radius is derived.
Michelle Modert, Nick Seinsche, Sören Bartels, Tom Masselter, Thomas Speck   +4 more
wiley   +1 more source

The mathematical theory of the motion of rotated and unrotated rockets [PDF]

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1949
An account is given of the mathematical theory of the motion of a rocket in flight. The aerodynamic forces and couples, and those due to the action of the burning gases, are investigated as fully as possible, and the equations of motion are set up in their most general form.
openaire   +4 more sources

Exploring mathematical values held by high school mathematics teachers

Discover Education
This study explored mathematical values espoused by senior high school (SHS) mathematics teachers in mathematics teaching and learning in a municipality in Ghana. To achieve this aim, we employed an explanatory sequential mixed methods design.
Esenam Dorwu, Francis Kwadwo Awuah, Patrick Kyeremeh   +2 more
doaj   +1 more source

Sex Differences in the Performance of 7–12 Year Olds on a Mental Rotation Task and the Relation With Arithmetic Performance

Frontiers in Psychology, 2019
This study evaluates boy-girl differences in 3D mental rotation in schoolchildren aged 7–12 years and the relation to arithmetic performance. A dedicated new task was developed: The Mental Rotation Task – Children (MRT-C).
Marleen van Tetering, Marthe van der Donk, Renate Helena Maria de Groot, Jelle Jolles   +3 more
doaj   +1 more source

A Mathematical Model for Rotating Biological Contactors

Water Science and Technology, 1990
A mathematical model for aerobic and anoxic degradation of organic components as well as nitrification in RBC systems is developed and verified against experimental experience after primary, secondary and tertiary treatment. The model considers biomass distribution within the biofilm as well as along a reactor chain.
W. Gujer, Markus Boller
openaire   +2 more sources

Bridging Nature and Technology: A Perspective on Role of Machine Learning in Bioinspired Ceramics

Advanced Engineering Materials, EarlyView.
Machine learning (ML) is revolutionizing the development of bioinspired ceramics. This article investigates how ML can be used to design new ceramic materials with exceptional performance, inspired by the structures found in nature. The research highlights how ML can predict material properties, optimize designs, and create advanced models to unlock a ...
Hamidreza Yazdani Sarvestani, Aditi Singh, Behnam Ashrafi   +2 more
wiley   +1 more source

Clinical and functional outcomes of reverse total shoulder arthroplasty supplemented with latissimus dorsi transfer: a systematic review and meta-analysis

JSES Reviews, Reports, and Techniques, 2023
Background: To optimize patients' functional external rotation outcomes, reverse total shoulder arthroplasties (rTSAs) including a latissimus dorsi tendon transfer were undertaken with promising early results and no significant increase in complications ...
Jake X. Checketts, DO, Robert Steele, MS, Ashini Patel, BS, Josh Stephens, BS, Kate Buhrke, BS, Arjun Reddy, BS, Landon Stallings, DO, Jacob J. Triplet, DO, Brian Chalkin, DO   +8 more
doaj   +1 more source

Subgrain and Cavity Development during Creep of Al‐3.85%Mg

Advanced Engineering Materials, EarlyView.
Al‐3.85%Mg does form subgrains if crept at very high strains. This fact allows the unification of the creep description in two different alloys such as pure Al and Al–Mg alloys. It is classically considered that the creep mechanisms for type M (e.g., pure Al) and type A alloys (e.g., Al–Mg alloys) are different.
Augusta Isaac, Itziar Serrano‐Munoz, Aleksander Kostka, Martinus Putra Widjaja, Gaspar González‐Doncel, Giovanni Bruno, Ricardo Fernández   +6 more
wiley   +1 more source

“It’s Different for Girls!” The Role of Anxiety, Physiological Arousal, and Subject Preferences in Primary School Children’s Math and Mental Rotation Performance

Behavioral Sciences
(1) Background: This study examines the role of subjective anxiety (mathematics and spatial anxiety), along with physiological responses, in mathematics or math and mental rotation performance in 131 German primary school students (65 girls, 66 boys ...
Michelle Lennon-Maslin, Claudia Michaela Quaiser-Pohl   +1 more
doaj   +1 more source