Results 71 to 80 of about 6,010,535 (335)

Numerical determination of the effective moments of non-spherical particles [PDF]

, 2006
Dielectric characterisation of polarisable particles, and prediction of the forces and torques exerted upon them, relies on the knowledge of the effective, induced dipole moment. In turn, through the mechanism of depolarisation, the induced dipole moment
Green, Nicolas G, Jones, Thomas B
core   +1 more source

Poroelastic shape relaxation of hydrogel particles

Soft Matter, 2021
We describe a straightforward way to determine the poroelastic diffusion coefficient of a hydrogel particle by first indenting itviaswelling in a granular packing, and then monitoring how its indented shape relaxes after it is removed.
Jean-François Louf, Sujit S. Datta
openaire   +3 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Rod-shaped Clay Particles

Nature, 1938
THE minerals found in clays and soil colloids are usually considered to be plate-shaped and to have layer lattices built up from sheets of silicon – oxygen tetrahedra. This may be true in the majority of cases, but rod- or needle-shaped particles can also occur and should not be overlooked. Their presence may be due to one of the following two reasons.
openaire   +1 more source

Shapes of laser-produced CsH particles [PDF]

Physical Review Letters, 1989
Shapes of laser-produced alkali-hydride crystalline particles (laser snow) are observed for the first time. Particles are suspended by an electric field so as to grow large enough to be observed by an optical microscope. It is found that the particles are single crystals and have particular shapes depending on the gas temperature and the laser-light ...
Tanaka, T., Mitsui, T., Sugiyama, K., Kitano, M., Yabuzaki, T.   +4 more
openaire   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Combined Influence of Particle Shape and Fabric on the Shear Behaviour of Granular Materials

Advances in Materials Science and Engineering, 2022
The anisotropy feature is an important characteristic of granular materials in natural life and is caused by two facts: the anisotropy feature of particle shape, such as an elongated or flattened shape, and the anisotropy feature of the packing fabric ...
Yuan-Yuan Liu, Yaping Zhang, Yanrong Li, Yi-Chen Guo   +3 more
doaj   +1 more source

Constraining the magnitude of the Chiral Magnetic Effect with Event Shape Engineering in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76$ TeV

, 2018
In ultrarelativistic heavy-ion collisions, the event-by-event variation of the elliptic flow $v_2$ reflects fluctuations in the shape of the initial state of the system. This allows to select events with the same centrality but different initial geometry.
Acharya, S., Adam, J., Adamová, D., Adolfsson, J., Aggarwal, M. M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, N., Ahn, S. U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S. N., Albuquerque, D. S.D., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Alici, A., Alkin, A., Alme, J., Alt, T., Bedda, C., Caffarri, D., Caliva, A., Christakoglou, P., Grelli, A., Haque, R., Jaelani, S., Keijdener, D. L.D., Khabanova, Z., Kuijer, P. G., Leogrande, E., Lodato, D. F., Margutti, J., Mischke, A., Mohammadi, N., Nooren, G., Peitzmann, T., Sas, M. H.P., Simatovic, G., Snellings, R. J.M., Trzeciak, B. A., Van Der Maarel, J., van Leeuwen, M., Veen, A. M., Vigolo, S., Wang, H., Yokoyama, H., Zhang, C.   +50 more
core   +1 more source

Modulation of Immune Responses by Particle Size and Shape

Frontiers in Immunology, 2021
The immune system has to cope with a wide range of irregularly shaped pathogens that can actively move (e.g., by flagella) and also dynamically remodel their shape (e.g., transition from yeast-shaped to hyphal fungi).
M. Baranov, Manoj Kumar, S. Sacanna, S. Thutupalli, Geert van den Bogaart   +4 more
semanticscholar   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source