Phosphorus fragments

Phosphorus.

Synthesis of Phosphorus, Arsenic and Antimony Ylides Containing the 1,3- Dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione Fragments

The ylides Ph3E-C6H6N2O3 (7, E = P (a), As (b), Sb (c)) have been prepared through the reaction of Ph3E and 5bromo-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione (5-bromo-1,3-dimethylbarbituric acid) 6 in the presence of triethylamine. Their characterisation was performed by nuclear magnetic resonance (NMR), mass spectrometry (MS) and elemental analysis.

fragments in persian

this article shows that persian fragments are derived via a'-movement of the remnant plus tp deletion. evidence like case-matching, binding effects, and scope and bound pronouns show that persian fragments result from the application of deletion rule. but prior to this application, fragments are extracted out of the ellipsis site and moved to the left periphery of the sentence. evidence li...

Skolem fragments

W. V. Quine splits the fundamental question of ontology—What is there?—into two questions: What does a theory say that there is? and What theories ought we adopt? Of these, only the former seems amenable to philosophical treatment. Quine thus attempts to formulate an adequate criterion of ontological commitment. Syntactically, the initially existentially quantified sentences of a theory appear ...

ARTILLERY SHELL FRAGMENTS IN THE HEART: DIAGNOSIS AND MANAGEMENT

Delayed evaluation and management of penetrating cardiac injuries especially mortar fragments were performed in 30 war victims in the Shahid Rajai Heart Hospital, Tehran. All were men with a mean age of 20.7 years. Pleuritic chest pain was the most common symptom (53.3%), while physical examination was negative in the majority of cases (66.8%). 50 percent of the cases had pericardial effus...