Results 51 to 60 of about 108,120 (190)

Synthesis and Reactivity of Iridium(III) Dihydrido Aminocarbenes [PDF]

, 2008
Iridium complexes supported by the PNP amidophosphine scaffold (PNP = [N(2-PiPr2-4-Me-C6H3)2]−) perform the selective double C−H activation of methyl amines to produce iridium(III) dihydrido aminocarbenes.
Grubbs, Robert H., Whited, Michael T.
core   +1 more source

High-temperature oxidation and erosion-resistant refractory coatings [PDF]

, 1970
Various refractory coating systems were evaluated for rocket nozzle applications by actual rocket test firings. A reference is noted which identifies failure mechanisms and gives results of the firing tests for 18 coating systems.
Peterson, D. A., Winter, J. M.
core   +1 more source

Automated evaluation of organ sparing in prostate stereotactic body radiation therapy using dose-gradient metrics

Physics and Imaging in Radiation Oncology
Background and purpose: Traditional dose-volume histogram (DVH) metrics used in radiotherapy plan evaluation lack spatial information and are sensitive to organ volume variations. This study investigated the use of Dose Gradient Curves (DGCs) as a robust,
Geert De Kerf, Michaël Claessens, Thibaut D’homme, Piet Dirix, Piet Ost, Dirk Verellen   +5 more
doaj   +1 more source

Iridium complexes bearing a PNP ligand, favoring facile C(sp^3)–H bond cleavage [PDF]

, 2011
Hydrogen iodide is lost upon reaction of PNP with IrI_3, where PNP = 2,6-bis-(di-t-butylphosphinomethyl)pyridine to give crystallographically characterized Ir(PNP)*(I)_2, which reacts with H_2 to give Ir(PNP)(H)(I)_2.
Goddard, William A., III, Lokare, Kapil S., Nielsen, Robert J., Periana, Roy A., Yousufuddin, Muhammed   +4 more
core   +1 more source

Multi-institutional generalizability of a plan complexity machine learning model for predicting pre-treatment quality assurance results in radiotherapy

Physics and Imaging in Radiation Oncology
Background and purpose: Treatment plans in radiotherapy are subject to measurement-based pre-treatment verifications. In this study, plan complexity metrics (PCMs) were calculated per beam and used as input features to develop a predictive model. The aim
Michaël Claessens, Geert De Kerf, Verdi Vanreusel, Isabelle Mollaert, Victor Hernandez, Jordi Saez, Núria Jornet, Dirk Verellen   +7 more
doaj   +1 more source

Stereotactic body radiotherapy (SBRT) as a treatment for localized prostate cancer: a retrospective analysis

Radiation Oncology
Background External beam radiotherapy (EBRT) is a standard treatment for localized prostate cancer, with recent advancements favoring a reduced number of treatment sessions.
Brecht De Cooman, Tibaut Debacker, Thomas Adams, Guy Lamberts, Bart De Troyer, Marc Claessens, Geert De Kerf, Carole Mercier, Piet Dirix, Piet Ost   +9 more
doaj   +1 more source

Analysis of iridium-augmented GPS positioning performance

The Journal of Engineering, 2019
Although the global positioning system (GPS) has a series of advantages such as global and high precision, there are still many deficiencies, in many cases, GSP cannot meet the requirements of the positioning accuracy.
Liu Xiao, Zhang Lei
doaj   +1 more source

Thermocouples of molybdenum and iridium alloys for more stable vacuum-high temperature performance [PDF]

, 1978
Thermocouples providing stability and performance reliability in systems involving high temperatures and vacuums by employing a bimetallic thermocouple sensor are described.
Morris, J. F.
core   +1 more source

Structure-property relationships of photofunctional diiridium(II) complexes with tetracationic charge and an unsupported Ir–Ir bond

Communications Chemistry, 2022
In contrast to the extensively studied dirhodium(II) complexes and iridium(III) complexes, neutral or dicationic dinuclear iridium(II) complexes with an unsupported ligand are underdeveloped.
Fangrui Zheng, Yuhong Yang, Siye Wu, Shunan Zhao, Yifan Zhu, Huimin Su, Jun-Feng Dai, Zeyin Yan, Lung Wa Chung, Keith Man-Chung Wong   +9 more
doaj   +1 more source

Gold and palladium as indicators of an extraterrestrial component in the Cetaceous/Tertiary boundary layer at Woodside Creek and Chancet Quarry, Marlborough, New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Earth Sciences at Massey University [PDF]

, 1998
It is widely believed that a large meteorite approximately 10 km in diameter impacted Earth at the termination of the Cretaceous Period with cosmic velocity, vaporising itself, along with a greater mass of the terrestrial target rocks into a cloud of hot
Cook, Andrew William
core