Results 41 to 50 of about 1,027,146 (340)

Analytical solution of the dynamical spherical MIT bag [PDF]

open access: yes, 2001
We prove that when the bag surface is allowed to move radially, the equations of motion derived from the MIT bag Lagrangian with massless quarks and a spherical boundary admit only one solution, which corresponds to a bag expanding at the speed of light.
Bhaduri R K   +15 more
core   +2 more sources

Dendritic cells steering antigen and leukocyte traffic in lymph nodes

open access: yesFEBS Letters, EarlyView.
Dendritic cells are key players in the activation of T cells and their commitment to effector function. In this In a Nutshell Review, we will discuss how dendritic cells guide the trafficking of antigen and leukocytes in the lymph node, thus influencing T‐cell activation processes. Dendritic cells (DCs) play a central role in initiating and shaping the
Enrico Dotta   +3 more
wiley   +1 more source

ANALYSIS OF DIFFICULTY LEVEL OF PHYSICS NATIONAL EXAMINATION’S QUESTIONS

open access: yesJurnal Pendidikan IPA Indonesia, 2016
This study aimed to determine: (1) the difficulty level of items in physics National Exam of 2013 (2) physics materials that were difficult and very difficult.
Yusrizal Yusrizal
doaj   +1 more source

Interplay between one-particle and collective degrees of freedom in nuclei

open access: yes, 2016
Some developments of nuclear-structure physics uniquely related to Copenhagen School are sketched based on theoretical considerations versus experimental findings and one-particle versus collective aspects.
Hamamoto, Ikuko
core   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

Le note marginali in alcune cinquecentesche del commento alla Physica di Agostino Nifo

open access: yesNoctua, 2016
In Augustinus Niphus’ commentary on Aristotle’s Physics (Venice, 1552) some marginal annotations can be considered an aide-mémoire for teachers commenting Aristotle’s text.
Stefano Caroti
doaj   +1 more source

The Design of One-Dimensional Motion and Two-Dimensional Motion Learning Media Using Digital Camera and Tracker-Based Air Track

open access: yesJPPPF: Jurnal Penelitian & Pengembangan Pendidikan Fisika, 2020
This research describes the results of the development of 2D air track tools designed for one and two-dimensional motion experiments with small frictional forces.
Fransisca Indra Dewi   +3 more
doaj   +1 more source

Development of Force and Motion Concept Self-Efficacy Inventory (FMCSEI) for Senior High School Students

open access: yesJurnal Penelitian dan Pembelajaran IPA, 2023
This study aimed to develop and validate the Force and Motion Concept Self-Efficacy Inventory (FMCSEI), a content-specific self-efficacy inventory for the senior high school level.
Albert Andry E. Panergayo
doaj   +1 more source

Adaptation to apparent concomitant motion in the absence of physical or retinal motion [PDF]

open access: yesBulletin of the Psychonomic Society, 1978
Continued fixation of a point of light in the dark moving concomitantly with the observer’s head motion has been found to lead to motion adaptation. This adaptation is shown in that, following the adaptation period, a physically stationary object viewed with head movement appears to move concomitantly with a direction and phase opposite to those of the
Walter C. Gogel, Jerome D. Tietz
openaire   +2 more sources

Born reciprocity and the 1/r potential

open access: yes, 2007
Many structures in nature are invariant under the transformation (p,r)->(br,-p/b), where b is some scale factor. Born's reciprocity hypothesis affirms that this invariance extends to the entire Hamiltonian and equations of motion.
D. Clowe   +19 more
core   +1 more source

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