Genome Maintenance by Selenoprotein H in the Nucleolus (OR11-03-19)

The Nucleolus: In Genome Maintenance and Repair

The nucleolus is the subnuclear membrane-less organelle where rRNA is transcribed and processed and ribosomal assembly occurs. During the last 20 years, however, the nucleolus has emerged as a multifunctional organelle, regulating processes that go well beyond its traditional role. Moreover, the unique organization of rDNA in tandem arrays and its unusually high transcription rates make it pron...

nt - p h / 03 03 03 8 v 2 19 M ar 2 00 3 Ancilla - assisted quantum process tomography

Complete and precise characterization of a quantum dynamical process can be achieved via the method of quantum process tomography. Using a source of correlated photons, we have implemented several methods, each investigating a wide range of processes, e.g., unitary, decohering, and polarizing. One of these methods, ancilla-assisted process tomography (AAPT), makes use of an additional “ancilla ...

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

The Wellesley News (1931-03-19)

Lecture 19 : 4 . 1 . 03

Approximation algorithms are used when we know a problem is hard. It is a way to consider optimization versions of function problems. For instance, given a 3-CNF formula, finding a maximal truth assignment is essentialy a MAX3SAT. Approximation algorithms return solutions that are close to the optimal in some way. So, if OPT (x) is the optimal solution for problem x, and A(x) is our approximate...