Results 31 to 40 of about 1,334,534 (293)
Enantioselective protonation [PDF]
Nature Chemistry, 2009 Enantioselective protonation is a common process in biosynthetic sequences. The decarboxylase and esterase enzymes that effect this valuable transformation are able to control both the steric environment around the proton acceptor (typically an enolate) and the proton donor (typically a thiol).
Mohr, Justin T. +2 more
openaire +3 more sources
Longitudinal Quantitative Analysis of Radiation Oncology Staff Illness in a New York City Center during COVID-19: The Impact of New Guidelines on Operations and Employee Health [PDF]
International Journal of Particle Therapy, 2020 Purpose: The novel coronavirus (COVID-19) forced radiation oncology clinics to overhaul operational policies, but the effect on employee safety has not, to our knowledge, been reported.
Shaakir Hasan, DO +4 more
doaj +1 more source
Folding model analysis of proton radioactivity of spherical proton emitters [PDF]
, 2005 Half lives of the decays of spherical nuclei away from proton drip line by proton emissions are estimated theoretically. The quantum mechanical tunneling probability is calculated within the WKB approximation.
C. Samanta +3 more
core +1 more source
Saturation of optimality limits in hadron-hadron scatterings [PDF]
, 2003 In this paper the optimal unitarity lower bound on logarithmic slope of the diffraction peak is investigated. It is shown that the unitarity lower bound is just the optimal logarithmic slopes predicted by the principle of least distance in space of ...
Ion, D. B., Ion, M. L.
core +3 more sources
Implementation of Monte Carlo based PET verification of ion beam delivery into a TPS
Radiation Medicine and Protection, 2022 Objective: To develop and implement an ion beam teletherapy verification system based upon simulations of induced radioactivity and comparison with patient positron emission tomography (PET) scans.
Pablo Yepes +7 more
doaj +1 more source
Frontiers in Psychiatry, 2023 ObjectiveMeaninglessness poses a significant psychological challenge for cancer patients, negatively affecting their quality of life and increasing the risk of suicide.
Shuman Wang +17 more
doaj +1 more source
Journal of Medical Case Reports, 2022 Background Breast cancer infrequently metastasizes to the sternum as solitary metastasis. We experienced successful treatment with proton beam therapy for a case of sternal metastasis of breast cancer.
Yojiro Ishikawa +8 more
doaj +1 more source
Sensors, 2022 Several detectors have been developed to measure radiation doses during radiotherapy. However, most detectors are not flexible. Consequently, the airgaps between the patient surface and detector could reduce the measurement accuracy.
Dong-Seok Shin +10 more
doaj +1 more source
Constituent quark model for nuclear stopping in high energy nuclear collisions [PDF]
, 1996 We study the nuclear stopping in high energy nuclear collisions using the constituent quark model. It is assumed that wounded nucleons with different number of interacted quarks hadronize in different ways.
Choi, T. K., Maruyama, M., Takagi, F.
core +3 more sources
Tracking Aqueous Proton Transfer by Two-Dimensional Infrared Spectroscopy and ab Initio Molecular Dynamics Simulations. [PDF]
, 2019 Proton transfer in water is ubiquitous and a critical elementary event that, via proton hopping between water molecules, enables protons to diffuse much faster than other ions.
Fayer, Michael D +5 more
core +2 more sources