The Gulf of Guinea belongs to the most scarcely sampled marine basins in oceans world. We have analyzed diversity and distribution patterns cumacean communities on shelf slope, along coast Ghana. material was collected October November 2012 using a van Veen grab (0.1 m 2 ) nine transects. Six stations were located at each transect (25, 50, 100, 250, 500, 1,000 m). Sixty-three species Cumacea re...

Several years ago considerable interest was aroused by the discovery by van Veen and Hyman (1) of a new naturally occurring sulfur-containing amino acid which they had isolated from the djenkol bean (Pithecolobium lobatum) and named djenkolic acid. They showed that it was probably the cysteine thioacetal of formaldehyde. This structure was confirmed by du Vigneaud and Patterson (2) who synthesi...

macrobentos frequency and biomass was investigated in the gorgan bay in 2011. five sampling sites were chosen to collect benthos and sediment from the bay using a van veen grab sampler. samples were collected seasonally. macrobenthos were indentified and their biomass was recorded. sediment heavy metals concentration were measured using atomic absorption spectroscopy. a total of 11 families bel...

A medium access control (MAC) protocol (NULLHOC) for ad hoc networks of nodes with antenna arrays is presented. The antenna array is used for transmit and receive beamforming with the purpose of increasing spatial reuse by directing nulls at active transmitters and receivers in the neighborhood. In contrast to previous work with directional antennas, our approach is applicable to multipath chan...

Citation Van der Veen, Annemarthe G. et al. " Role of the Ubiquitin-like Protein Urm1 as a Noncanonical Lysine-directed Protein Modifier. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits yo...

We discuss the problem of recognizing permuted Van der Veen (VdV) matrices. It is well known that the TSP with a VdV matrix as distance matrix is pyramidally solvable. In this note we solve the problem of recognizing permuted strong VdV matrices. This yields an O(n4) time algorithm for the TSP with a permuted Euclidean VdV matrix. The problem, however, of recognizing permuted VdV matrices in ge...