Results 41 to 50 of about 1,369,818 (304)

A study of the ring opening metathesis polymerization of polycyclic aromatic monomers and cyclopentenes with well defined initiators [PDF]

, 1994
This thesis describes studies into the ring opening metathesis polymerisation (ROMP) of polycyclic aromatic monomers and cyclopentenes. Chapter 1 reviews general aspects of ring opening metathesis polymerisation of relevance to the themes of this thesis.
Sugawara, Keiji
core  

Niobium Pentachloride Catalysed Ring Opening of Epoxides

Molecules, 2001
Epoxide ring opening is a frequently required transformation in Organic Synthesis. In this paper we describe the application of NbCl5 for this purpose using three different substrates.
Valquiria Aragão, Valdemar Lacerda, Mauricio Gomes Constantino   +2 more
doaj   +1 more source

Global Efforts to Reduce Paediatric Cancer Care Disparities in Radiotherapy: A Decade Change

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background We present an update on the status, needs and challenges faced by paediatric imaging and radiotherapy (RT) programmes globally after a previous survey conducted by the International Atomic Energy Agency (IAEA) 10 years prior. Methods We developed and distributed a 121‐question survey to radiation oncologists, medical physicists and ...
Raymond B. Mailhot Vega, Daniel J. Indelicato, Jeanette Parkes, Natia Esiashvili, Josué Hernández Benítez, Miriam Mikhail‐Lette, Olivera Cirajc Bjelac, Daniel Berger, Eva Ciurana, Yavuz Anacak, Lisbeth Cordero‐Mendez   +10 more
wiley   +1 more source

Ring-Opening Metathesis Polymerization from Surfaces

, 2016
Ring-Opening Metathesis Polymerization from ...
Robert R. Rossi (3006015), Marcus Weck (665771), Paul S. Weiss (1272021), Robert H. Grubbs (1318044), Jennifer J. Jackiw (3006012)   +4 more
core   +1 more source

Neuropsychological and Educational Outcomes in Shwachman–Diamond Syndrome—A Report From the North American Shwachman–Diamond Syndrome Registry

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Shwachman–Diamond syndrome (SDS) is a rare autosomal recessive ribosomopathy characterized by bone marrow failure and multisystem involvement, with emerging evidence of associated neurocognitive impairment. Methods We conducted a retrospective study of 240 individuals with biallelic Shwachman–Bodian–Diamond syndrome (SBDS) mutations
Jane Koo, Melissa Gerstle, Leah Cheng, Richard Cooper, Katherine Coyne, Claire Dusa, Naomi E. Joffe, Diana Schwarz, Sarah Steltz, Akiko Shimamura, Kasiani C. Myers, Thea Quinton   +11 more
wiley   +1 more source

Carbene-Assisted Arene Ring-Opening

Despite the significant achievements in dearomatization and C–H functionalization of arenes, the arene ring-opening remains a largely unmet challenge and is underdeveloped due to the high bond dissociation energy and strong resonance stabilization energy
Haoran Xu (484184), Ning Jiao (1457857), Zhibin Hu (102783), Minghui Zhu (1506775), K. N. Houk (1247004), Zengrui Cheng (5616209), Xiao-Song Xue (1433848)   +6 more
core   +2 more sources

Mechanical Behavior of Urban Rail Transit Station Structure Based on Existing Shield Tunnel Interval Underground Excavation Construction

Chengshi guidao jiaotong yanjiu
Objective Cancer Hospital Station on Shenzhen Rail Transit Line 14 adopts a scheme of large-diameter (8.5 m) shield tunnel expansion featuring tunnel-first and station-later.
ZHANG Zhongan, PAN Ye, GUO Zhenkun, ZHANG Jiaolong, GAO Yimin, LIU Xian   +5 more
doaj   +1 more source

Detailed Molecular Dynamics of the Photochromic Reaction of Spiropyran: A Semiclassical Dynamics Study

International Journal of Photoenergy, 2014
A realistic semiclassical dynamics simulation study is reported for the photoinduced ring-opening reaction of spiropyran. The main simulation results show that one pathway involves hydrogen out-of-plane (HOOP) torsion of phenyl ring nearby N atom in 254 ...
Gaohong Zhai, Shuai Shao, Shaomei Wu, Yibo Lei, Yusheng Dou   +4 more
doaj   +1 more source

Survival After Hematopoietic Stem Cell Transplantation in Diamond–Blackfan Anemia Syndrome: The Role of Iron Overload—A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT We assessed the effect of iron overload (IO) on mortality and complications following hematopoietic stem cell transplantation (HSCT) in patients with Diamond–Blackfan anemia syndrome (DBAS) in a systematic review of individual participant data and cohort data from observational studies.
Geoffrey Z. L. Kuppens, Evangelia Kiakou, Lieke de Zwart, Maurizio Miano, Eduard J. van Beers, Marc Bierings, Marije Bartels   +6 more
wiley   +1 more source

Ring-opening polymerization used to produce the fluorosilicone fluid.

, 2022
The two cyclotrisiloxane monomers (hexamethylcyclotrisiloxane and 1,3,5-trimenthyl 1,3,5-tris(3,3,3-trifluoropropyl)cyclotrisiloxane) are reacted along with hexamethyl disiloxane, which acts as a chain terminator.
Roberto Laos (1928638), Steven Benner (1928632)   +1 more
core   +1 more source