Results 121 to 130 of about 227,563 (317)

Turbulence transport throughout the heliosphere

, 2007
We employ a turbulence transport model to compute distributions of turbulence throughout the heliosphere. The model determines the radial dependence of three (coupled) quantities that characterize interplanetary turbulence, the energy per unit mass, the ...
Matthaeus, William H., Oughton, Sean, Minnie, J., Smith, Charles W., Bieber, J.W., Isenberg, P.A., Breech, Ben   +6 more
core   +1 more source

Proton-Proton Scattering at 340 Mev

Physical Review, 1950
Measurements of the proton-proton differential scattering cross section using 340-Mev protons show a cross section approximately constant between 41\ifmmode^\circ\else\textdegree\fi{} and 90\ifmmode^\circ\else\textdegree\fi{} in the center of mass system. Two methods of counting the scattered protons have been used.
Chamberlain, Owen, Wiegand, Clyde
openaire   +4 more sources

Facile Preparation of Carbon Membranes Derived from a Fluorenyl‐Containing Polyimine for Selective Hydrogen Separation

Advanced Functional Materials, EarlyView.
A fluorenyl‐containing polyimine is introduced as a simple, scalable precursor for high‐performance carbon membranes. The precursor's intrinsic kinked structure enables defect‐free membrane formation with enhanced hydrogen permeance and excellent ideal selectivities for key industrial gas pairs (H2/N2, H2/CH4, and H2/CO2), offering a practical route ...
Clara Coiana, Christos Pantazidis, Ankita Mandal, Maarten Bransen, Fausto Gallucci, Željko Tomović   +5 more
wiley   +1 more source

The impact of low energy proton damage on the operational characteristics of EPIC-MOS CCDs

, 2003
The University of Tübingen 3.5 MeV Van de Graaf accelerator facility was used to investigate the effect of low energy protons on the performance of the European Photon Imaging Camera (EPIC), metal–oxide semiconductor (MOS), charge coupled devices (CCDs).
Abbey, AF, Ambrosi, RM, Kendziorra, E, Wells, A, Holland, AD, Hutchinson, IB, Smith, DR, Short, A, Turner, MJL   +8 more
core  

Self‐Adaptive Anhydrous Passivation Mitigates Open‐Circuit Voltage Loss in Pb‐Sn Mixed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
In this report, a self‐adaptive anhydrous passivation strategy is introduced by incorporating trimellitic anhydride (TMAH) into the perovskite precursor. In situ hydrolysis of TMAH yields trimellitic acid (TMA); ‐C═O/‐COO− groups of TMAH/TMA form a chelate with undercoordinated Pb2+/Sn2+, regulate nucleation, promote (100) orientation, passivate ...
Md. Ataur Rahman, Md. Abdul Karim, Md. Emrul Kayesh, Siliang Cao, Shamim Ahmmed, Kiyoto Matsuishi, Ashraful Islam   +6 more
wiley   +1 more source

Study of H-recombination in Aluminium foils: first irradiation tests with low-energy protons (5 keV) at the DLR Complex Irradiation Facility (CIF)

, 2012
The current DLR project GOSSAMER aims at establishing solar sails as a powerful and reliable propulsion technique for future space missions. The solar sail propulsion technique basically uses the transfer of momentum from solar photons to a large foil ...
Geppert, Ulrich, Renger, Thomas, Witzke, Andreas, Sznajder, Maciej   +3 more
core  

Role of Oxidative Stress Signaling, Nrf2, on Survival and Stemness of Human Adipose-Derived Stem Cells Exposed to X-rays, Protons and Carbon Ions

Antioxidants
Some cancers have a poor prognosis and often lead to local recurrence because they are resistant to available treatments, e.g., glioblastoma. Attempts have been made to increase the sensitivity of resistant tumors by targeting pathways involved in the ...
Mira Hammad, Rima Salma, Jacques Balosso, Mohi Rezvani, Siamak Haghdoost   +4 more
doaj   +1 more source

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

Advanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang, Jintao Dong, Xiahe Chen, Xiyang Wang, Tiange Wei, Yue Zhu, Tai‐Sing Wu, Yun‐Fang Yang, Shao‐Yuan Leu, Keke Wang, Yuanbin She, Huaming Li, Jiexiang Xia, Molly Meng‐Jung Li   +13 more
wiley   +1 more source

Protons as Intercellular Messengers

, 2008
Muscle contractions are driven by neurotransmitters released at neuromuscular junctions. In this issue, Beg et al. (2008) report that protons, in the absence of neurotransmitters and neurons, can stimulate muscle contractions involved in the defecation ...
Kim, Joanne S.M., Zhen, Mei
core   +1 more source

Nanoengineered Binetworks in Multifunctional Anionic Block Polymer Mesoblends for Improved Mechanical Properties

Advanced Functional Materials, EarlyView.
Mesoblends consist of a nanostructured polymer into which a second polymer is imbibed with a selective solvent. In this work, a solvent‐templatable pentablock terpolymer possessing a sulfonated midblock is modified with a hydrophilic polymer that is photocrosslinked in situ, yielding a hierarchical binetwork.
Kacie M. Wells, Ivan Kuzmenko, Reza A. Ghiladi, Richard J. Spontak   +3 more
wiley   +1 more source