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STUDY OF PF-RING INFRASTRUCTURE IMPROVEMENTS FOR THE PF UPGRADE PLAN
STUDY OF PF-RING INFRASTRUCTURE IMPROVEMENTS FOR THE PF UPGRADE PLANopenaire
COD CORRECTION AT THE PF RING BY NEW ORBIT FEEDBACK SCHEME
COD CORRECTION AT THE PF RING BY NEW ORBIT FEEDBACK SCHEMEopenaire
DESIGN AND PROPERTIES OF A NEW DCCT CHAMBER FOR THE PF-RING AT KEK
DESIGN AND PROPERTIES OF A NEW DCCT CHAMBER FOR THE PF-RING AT KEKopenaire
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On Generalizations of PF-Rings
Communications in Algebra, 2004Abstract A ring R is called a right WPF-ring (weak PF-ring) if R is a semiperfect right simple-injective ring with essential right socle. The class of right WPF-rings is broader than that of right PF-rings. In this article, we study and provide several characterizations of this new class of rings.
Jianlong Chen +2 more
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JP Journal of Algebra, Number Theory and Applications, 2017
Summary: Let \(R\) be a commutative ring and \(S\) be the monoid generated by \(\{u\}\) with 0 added, with the relation \(u^n=0\), where \(n\geq2\) is a natural number. In this paper, we show that if \(R\) is a PF-ring in the sense that every finitely generated projective \(R\)-module is free, then the monoid ring \(R[S]\) is also a PF-ring.
Paykan, Kamal, Arjomandfar, Abbas
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Summary: Let \(R\) be a commutative ring and \(S\) be the monoid generated by \(\{u\}\) with 0 added, with the relation \(u^n=0\), where \(n\geq2\) is a natural number. In this paper, we show that if \(R\) is a PF-ring in the sense that every finitely generated projective \(R\)-module is free, then the monoid ring \(R[S]\) is also a PF-ring.
Paykan, Kamal, Arjomandfar, Abbas
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Upgrade of the PF Ring Vacuum Control System
Proceedings of the 2005 Particle Accelerator Conference, 2006Vacuum control system of the KEK Photon Factory (PF) storage ring has been upgraded in the summer of 2004 for the first time since the PF ring operation started in 1982. The new vacuum control system is based on PLC (Programmable Logic Controller) and EPICS (Experimental Physics and Industrial Control System)[1].
Y. Tanimoto, T. Nogami, T. Obina
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The pure spectrum of a PF-ring
Commentarii mathematici Universitatis Sancti Pauli = Rikkyo Daigaku sugaku zasshi, 1988An ideal I of a commutative ring R is called pure, if for every \(x\in I\) there is \(y\in I\) such that \(xy=x\). The ring R is called a PF-ring (resp. PP-ring) if every principal ideal is a flat (resp. projective) R-module. The aims of the paper are: (1) A characterization of pure ideals in a PF-ring; (2) A description of the set of purely prime ...
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Improvement of the PF ring vacuum system
Applied Surface Science, 2001For an upgrade of the PF ring, about half of the vacuum ducts were replaced by newly made or improved ones, which were designed and manufactured to achieve the required beam lifetime. The concept of pumping was maintained. Every vacuum duct was pre-baked and installed with care so as not to introduce contamination caused by exposure to the atmosphere ...
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Catalytic Enantioselective Ring-Opening Reactions of Cyclopropanes
Chemical Reviews, 2021Vincent Pirenne +2 more
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C–C Bond Cleavages of Cyclopropenes: Operating for Selective Ring-Opening Reactions
Chemical Reviews, 2021Ruben Vicente
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