THE YACYRETA HOUSING COMPLEX: 20 YEARS LATER

The Pronuclei - 20 Years Later

The early mouse embryo is an excellent model to study chromatin changes that underlie zygotic gene activation. Chromatin remodelling in the fertilised mouse egg is intimately linked to protein synthesis and degradation, to protamine by histone replacement and to specific histone modifications. Roumen Tsanev made significant contributions in this field of research. He generated seminal data on p...

Case , 20 Years Later

The theory of abstract Case in the framework of Government and Binding played an important role in capturing cross-linguistic generalizations regarding order and constituency and accommodating exceptions to word order universals. Case was shown to be relevant even in languages without morphological case markings. Indeed, Li (1985, 1990) demonstrated that Case facilitated the understading of a w...

Hard Diffraction — 20 Years Later

The idea of diffractive processes with a hard scale involved, to resolve the underlying parton dynamics , was published 1985 and experimentally verified 1988. Today hard diffraction is an active research field with high-quality data and new theoretical models. The trend from Regge-based pomeron models to QCD-based parton level models has given insights on QCD dynamics involving perturbative glu...

Informed Consent 20 Years Later

The title of this paper is an allusion to a previous article, published in the Canadian Bar Review in 1991, entitled Informed Consent Ten Years Later: The Impact of Reibl v. Hughes. The purpose of the 1991 article was to examine developments in the law of informed consent following the seminal decision of the Supreme Court of Canada in Reibl v. Hughes. The 1991 study identified certain themes a...

Promoting polyarchy : 20 years later