Results 41 to 50 of about 366,753 (293)

Molecular probes reveal deviations from Amontons’ law in multi-asperity frictional contacts

Nature Communications, 2018
Amontons’ law assumes that friction and normal forces depend linearly on the contact area. Here, the authors use a new contact detection method to show that the law is broken because asperities interact and deform in the contact area to change it ...
B. Weber, T. Suhina, T. Junge, L. Pastewka, A. M. Brouwer, D. Bonn   +5 more
doaj   +1 more source

An Integral Method for Natural Convection of Van Der Waals Gases over a Vertical Plate

Energies, 2021
This paper focuses on a study of natural convection in a van der Waals gas over a vertical heated plate. In this paper, for the first time, an approximate analytical solution of the problem was obtained using an integral method for momentum and energy ...
A. A. Avramenko, I. V. Shevchuk, Yu. Yu. Kovetskaya, N. P. Dmitrenko   +3 more
doaj   +1 more source

Van der Waals density functional: Self-consistent potential and the nature of the van der Waals bond

, 2007
We derive the exchange-correlation potential corresponding to the nonlocal van der Waals density functional [M. Dion, H. Rydberg, E. Schroder, D. C. Langreth, and B. I. Lundqvist, Phys. Rev. Lett. 92, 246401 (2004)].
Aaron Puzder, David C. Langreth, H. Hellmann, H. J. Williams, J. Cerny, L. J. Sham, Per Hyldgaard, Shen Li, T. Thonhauser, Valentino R. Cooper, W. Pauli, Y. U. Barash, Y. U. Barash, Y. U. Barash, Y. U. Barash   +14 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Graphene-hexagonal boron nitride van der Waals heterostructures: an examination of the effects of different van der Waals corrections

Materials Research Express, 2021
The structural and electronic properties of graphene on hexagonal boron nitride (hBN) as 2D van der Waals heterostructure were calculated using density functional theory method with van der Waals corrections.
John Radly M Sevilla, Darwin B Putungan
doaj   +1 more source

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

Molecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala, Sini Ahonen, Sara Peltola, Aura Tuohisto‐Kokko, Olaya Esparta, Peppi Suominen, Anne Jokilammi, Iman Farahani, Deepankar Chakroborty, Nikol Dibus, Steffen Boettcher, Tomi T. Airenne, Mark S. Johnson, Lisa D. Eli, Klaus Elenius, Kari J. Kurppa   +15 more
wiley   +1 more source

Controlled spherulitic crystal growth from salt mixtures

Communications Chemistry
Spherulites are spherical crystals that are polycrystalline assemblies of radially organized crystallites. Despite their wide prevalence and relevance to fields ranging from geology to medicine, the dynamics of spherulitic crystallization and the ...
Tess Heeremans, Simon Lépinay, Romane Le Dizès Castell, Isa Yusuf, Paul Kolpakov, Daniel Bonn, Michael Steiger, Noushine Shahidzadeh   +7 more
doaj   +1 more source

Adsorbate vibrational modes enhancement of radiative heat transfer and van der Waals friction

, 2006
We study the dependence of the heat transfer and the van der Waals friction between two semi-infinite solids on the dielectric properties of the bodies. We show that the heat transfer and van der Waals friction at short separation between the solids may ...
A.I. Volokitin, B.N.J. Persson, Dedkov, Dorofeyev, Dzyaloshinskii, Fuchs, Gostmann, Gramila, Gramila, Greffet, Hartmann, Hoffmann, Johansson, Kliever, Kyasov, Landau, Levin, Levitov, Lifshitz, Majumdar, Mamin, Mkrtchian, Mulet, Palik, Pendry, Pendry, Persson, Polder, Polevoi, Schaich, Senet, Sivan, Stipe, Theodorovitch, Tomassone, Volokitin, Volokitin, Volokitin, Volokitin, Volokitin, Volokitin, Volokitin, Volokitin, Zurita-Sánchez   +43 more
core   +1 more source

Fullerene van der waals Oligomers as electron traps [PDF]

, 2014
Density functional theory calculations indicate that van der Waals fullerene dimers and larger oligomers can form interstitial electron traps in which the electrons are even more strongly bound than in isolated fullerene radical anions.
Clark, Tim, Guldi, Dirk M., Halik, Marcus, Jennepalli, Sreenu, Keller, Paul A., Pyne, Stephen G., Schubert, Christina, Sharapa, Dmitry I., Shubina, Tatyana E., Zahn, Dirk   +9 more
core   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source