Determination of Hydrogen Bonds in GROMACS: A New Implementation to Overcome Memory Limitation.

This work introduces a new faster implementation of the hydrogen bond network (complex arrangement of hydrogen bonds between or within molecules) search algorithm in biomacromolecules and their environment. Existing implementation of such an algorithm in GROMACS [Abraham et al. .

DSSP in GROMACS: Tool for Defining Secondary Structures of Proteins in Trajectories.

This work describes a fast implementation of a software algorithm associated with determination of protein secondary structure based on the Define Secondary Structure of Proteins (DSSP) algorithm. This implementation is fully compatible with the DSSP v.4 and DSSP v.

Efficient Cherenkov-type optical-to-terahertz converter with terahertz beam combining.

A nonlinear structure for efficient Cherenkov-type terahertz emission from ultrashort laser pulses is proposed, modeled, and experimentally demonstrated. The structure comprises a thin (a few tens of micrometers thick) layer of lithium niobate sandwiched between two silicon prisms. A focused-to-a-line laser pulse propagates in the layer and generates a Cherenkov wedge of terahertz radiation in the prisms.

Coherence properties of a 2.6-7.5 μm frequency comb produced as a subharmonic of a Tm-fiber laser.

We study the temporal coherence of an ultrabroadband frequency comb produced in a degenerate GaAs optical parametric oscillator (OPO) pumped by a stabilized Tm-fiber comb, by observing multiheterodyne beats in the RF domain. We infer that in such a regime the OPO automatically produces a stable frequency comb that is phase and frequency locked to the pump. By varying intracavity dispersion, we achieve a comb spanning 2.

[Prognostic significance of cell proliferation, microvascular density and androgen receptor level in prostatic adenocarcinoma].

Our study was concerned with prognostic significance of immunophenotypical features of prostate adenocarcinoma such as Ki-67 proliferation, androgen receptors (AR), microvascular density (MVD) in the stroma and tumor glands. Ki-67, AR and MVD expression correlated inversely with PSA level during hormonotherapy (r=0.24-0.