Results 31 to 40 of about 6,281,447 (337)

Terahertz waves regulate the mechanical unfolding of tau pre-mRNA hairpins

iScience, 2023
Summary: Intermolecular interactions, including hydrogen bonds, dominate the pairing and unpairing of nucleic acid chains in the transfer process of genetic information.
Qin Zhang, Lixia Yang, Kaicheng Wang, Lianghao Guo, Hui Ning, Shaomeng Wang, Yubin Gong   +6 more
doaj   +1 more source

Basic Stellar Physics [PDF]

EPJ Web of Conferences, 2023
Polytropes, Virial theorem, evolutionary time scales, degrees of freedom, radiative transport, molecular weight, degeneracy, Jeans mass, and Eddington luminosity are basic ingredients to describe the physics of stars.
Palmerini S.
doaj   +1 more source

Majorana: from atomic and molecular, to nuclear physics [PDF]

, 2006
In the centennial of Ettore Majorana's birth (1906-1938?), we re-examine some aspects of his fundamental scientific production in atomic and molecular physics, including a not well known short communication.
A. Sommerfeld, B.H. Bransden, C.A. Coulson, E. Amaldi, E. Di Grezia, E. Fermi, E. Fermi, E. Fermi, E. Hückel, E. Majorana, E. Majorana, E. Majorana, E. Majorana, E. Rutherford, E. Segrè, F. Hund, F. Hund, G. G. N. Angilella, I. Joliot-Curie, I. Joliot-Curie, J. Ackermann, J. Chadwick, J.C. Slater, J.M. Blatt, L. Bonolis, L. Coman, L. Pauling, L. Pauling, L. Pauling, L.H. Thomas, N.H. March, P.A.M. Dirac, P.N. Reagan, R. Pucci, R. Pucci, R. Pucci, R.S. Mulliken, R.S. Mulliken, S. Esposito, S. Esposito, S. Flügge, S.C. Wang, W. Bothe, W. Heisenberg, W. Heisenberg, W. Heisenberg, W. Heitler   +46 more
core   +3 more sources

Gas-phase Ortho-to-para Ratio of Formaldehyde Formed at Low Temperatures in Laboratory Ices

The Astrophysical Journal Letters, 2023
The ortho-to-para ratio (OPR) of formaldehyde (H _2 CO) has been used as a probe to estimate the formation temperature of molecules in interstellar, circumstellar, and cometary environments, relying on the assumption that nuclear spin conversion is ...
K. M. Yocum, O. H. Wilkins, J. C. Bardwell, S. N. Milam, P. A. Gerakines   +4 more
doaj   +1 more source

Precision Spectroscopy of Molecular Hydrogen Ions: Towards Frequency Metrology of Particle Masses [PDF]

, 2006
We describe the current status of high-precision ab initio calculations of the spectra of molecular hydrogen ions (H_2^+ and HD^+) and of two experiments for vibrational spectroscopy.
Bakalov, D., Hilico, L., Karr, J. -Ph., Koelemeij, J., Korobov, V. I., Roth, B., Schiller, S.   +6 more
core   +3 more sources

Topological characterization of neutron star crusts [PDF]

, 2012
Neutron star crusts are studied using a classical molecular dynamics model developed for heavy ion reactions. After the model is shown to produce a plethora of the so-called "pasta" shapes, a series of techniques borrowed from nuclear physics, condensed ...
A. Barrañón, A. Barrañón, C. O. Dorso, C. O. Dorso, C. O. Dorso, C. O. Dorso, D. P. Menezes, J. A. López, J. A. López, P. A. Giménez Molinelli, P. Haensel, P. Ring   +11 more
core   +2 more sources

Essay: Quantum Sensing with Atomic, Molecular, and Optical Platforms for Fundamental Physics. [PDF]

Physical Review Letters
Atomic, molecular, and optical (AMO) physics has been at the forefront of the development of quantum science while laying the foundation for modern technology. With the growing capabilities of quantum control of many atoms for engineered many-body states
Jun Ye, Peter Zoller
semanticscholar   +1 more source

Teaching "Symmetry" in the Introductory Physics Curriculum [PDF]

, 2000
Modern physics is largely defined by fundamental symmetry principles and Noether's Theorem. Yet these are not taught, or rarely mentioned, to beginning students, thus missing an opportunity to reveal that the subject of physics is as lively and ...
Hill, Christopher T., Lederman, Leon M.
core   +2 more sources

Influence of dewetting on the crystallization behavior of CuCl₂ in the presence of BSA during evaporation in a Petri dish

Heliyon, 2019
The overall structure of dihydrate cupric chloride (CuCl2 * 2H2O) crystallization patterns in the presence of bovine serum albumin (BSA) in a Petri dish is influenced by dewetting. The dewetting behavior, which can be either before or after initial CuCl2
Nicolaas Busscher, Paul Doesburg, Gaby Mergardt, Anezka Sokol, Johannes Kahl, Angelika Ploeger   +5 more
doaj   +1 more source

Cholesteric Soft Matter Molded Helical Photonic Architecture toward Volatility Monitoring of Organic Solvent

Advanced Photonics Research, 2021
Volatility monitoring of a tiny amount of organic solvent, which reflects the profound understanding of the micro‐environmental chemical physics effect, plays a significant role in chemical reactions.
Ning Shen, Mengting Hu, Xiao-Qian Wang, Pei-Zhi Sun, Cong-Long Yuan, Binghui Liu, Dong Shen, Zhi-Gang Zheng, Quan Li   +8 more
doaj   +1 more source