Results 91 to 100 of about 848,265 (305)

On the scattering of protons by protons [PDF]

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1948
Abstract The features of the scattering of protons by protons are calculated using the Møller-Rosenfeld version of the meson theory of nuclear forces. A comparison with the experimental material suggests that the neutron-proton interaction is slightly stronger than that between two protons.
openaire   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Retrospective Analysis of CT-based Habitat Analysis for Predicting pCR and Survival of ESCC Treated by Neoadjuvant Chemoradiotherapy and Esophagectomy

Technology in Cancer Research & Treatment
Introduction This study sought to develop a predictive model using CT-based habitat radiomics to forecast pathological complete response (pCR) and progression-free survival (PFS) in esophageal squamous cell carcinoma (ESCC) patients receiving ...
Shujun Zhang MS, Wei-Xiang Qi MD, Feng Wang MD, Yibin Zhang MS, Jiayi Chen MD, Shengguang Zhao MD   +5 more
doaj   +1 more source

The preliminary results of proton and carbon ion therapy for chordoma and chondrosarcoma of the skull base and cervical spine

Radiation Oncology, 2019
Purpose To evaluate the short-term outcomes in terms of tumor control and toxicity of patients with skull base or cervical spine chordoma and chondrosarcoma treated with intensity-modulated proton or carbon-ion radiation therapy.
Xiyin Guan, Jing Gao, Jiyi Hu, Weixu Hu, Jing Yang, Xianxin Qiu, Chaosu Hu, Lin Kong, Jiade J. Lu   +8 more
doaj   +1 more source

Substituent Effects on the Intramolecular Proton Transfer in [omega]-Phenylalkylbenzenium Ions [PDF]

, 1985
Bäther W, Kuck D, Grützmacher H-F. Substituent Effects on the Intramolecular Proton Transfer in [omega]-Phenylalkylbenzenium Ions. Organic Mass Spectrometry.
Bäther, Wolfgang, Wolfgang Bäther, Grützmacher, Hans-Friedrich, Dietmar Kuck, Kuck, Dietmar, Hans‐Fr. Grützmacher   +5 more
core   +1 more source

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

FEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer, Pawel Rubach, Zbigniew Dauter, Wojciech Dec, Dariusz Brzezinski, Marta Kulik, Wladek Minor, Mariusz Jaskolski   +7 more
wiley   +1 more source

Improving total bone marrow and lymphoid irradiation: feasibility of intensity-modulated proton therapy (IMPT) and dosimetric comparison with helical tomotherapy (HT)

Radiation Oncology
Background and purpose This study aims to develop and validate a novel whole-body intensity-modulated proton therapy (IMPT) approach for total marrow/lymphatic irradiation (TMI/TMLI) and compare its efficacy to helical tomotherapy (HT).
Dayananda Shamurailatpam Sharma, Arjunan Manikandan, Gaganpreet Singh, Sanjib Gayen, Sham Sundar, Aishwarya G, Rangasamy S, Mahammood Suhail, Rajesh S, Ganapathy Krishnan, Revathi Raj, Srinivas Chilukuri, Jose Easow, Rakesh Jalali   +13 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Carbon ion radiotherapy boost in the treatment of glioblastoma: a randomized phase I/III clinical trial

Cancer Communications, 2019
Background Glioblastoma (GBM) is a highly virulent tumor of the central nervous system, with a median survival 
Lin Kong, Jing Gao, Jiyi Hu, Rong Lu, Jing Yang, Xianxin Qiu, Weixu Hu, Jiade J. Lu   +7 more
doaj   +1 more source

Recent insights into the molecular mechanism of ubiquinol oxidation by cytochrome bc1

FEBS Open Bio, EarlyView.
The review reflects on the mechanism of the catalytic reaction in cytochrome bc1: the electron bifurcation that involves the separation of two electrons derived from the quinol oxidation to opposite sides of the enzyme across the membrane. This review summarizes the long‐standing effort to understand the mechanism of quinol oxidation catalyzed by ...
Anna Wójcik‐Augustyn, Artur Osyczka, Marcin Sarewicz   +2 more
wiley   +1 more source