gebhart/patrepeval huggingface dataset:
Ribosomal Structure and Genetics (2014)

This chapter summarizes the current knowledge about Bacillus ribosomes and translation factors. Much of the information concerning Bacillus ribosome structure and function has been obtained from work with Bacillus stearothermophilus, while most of the genetic analysis has been carried out with B. subtilis. Available information about ribosome structure and genetics in other gram-positive systems are also summarized in this chapter. B. subtilis contains 10 rRNA operons.The sequences of the rrnB and rrnO operons have been determined; they show an organizational pattern identical to that of the E. coli rRNA operons, containing genes for 16S, 23S, and 5S rRNA in that order. Ribosomal-protein gene characterization was initiated by the isolation and mapping of mutations conferring resistance to antibiotics that were known to target the translational machinery. A number of mutants that have alterations in components of the translational apparatus and exhibit defects in sporulation have been identified. These include mutants with altered sensitivity to antibiotics that act on the ribosome and temperature-sensitive mutants that result in spore-minus or spore-conditional phenotypes. In E. coli, sequences in the promoter regions of genes sensitive to the stringent response have been identified, and it has been proposed that (p)ppGpp acts directly as an effector in modulating promoter recognition by RNA polymerase. Expression of a fusion of the B. subtilis rrnO promoter to lacZ was repressed by induction of the stringent response by the addition of serine hydroxamate in wild-type strains but not in a relA-minus mutant.
Security of fixed and wireless computer networks (2003)

A few decades ago, most computers were stand-alone machines: they were able to process information using their own resources. Later, computer systems were connected to each other enabling a computer system to exchange data with another computer and to use resources of another computer. With the coupling of computer systems, security items emerge: in general the link between computers is not protected by thorough physical means. That enables an attacker to tap or modify information on the link. In this article, a description of the architecture of a wired and a wireless computer network is given. For both types of networks, threats to the process of information exchange are indicated. Security services and security mechanisms are addressed aiming to secure the information exchange between computer systems.
Speech modeling with time varying amplitude and phase (2002)

Formant transitions contain important information related to hearing and perception. The concept of moving poles is used in this paper in relation to the time-varying impulse response model of the vocal tract and describes the trajectory of a formant. The model allows for amplitude modulation as well as other nonstationarities present such as formant bandwidth variations. The moving poles are modeled as polynomial functions of time, whose linear (albeit suboptimal) estimates ate obtained from the higher-order ambiguity function. An overall optimal but nonlinear least squares scheme is developed to improve upon the linear estimates and both algorithms are tested by simulations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Statistical Characteristics of Solutions of the System of the Stochastic Transfer Model (2021)

This paper proposes a new stochastic transport model formalized in differential equations with random parameters. Explicit formulas for the mathematical expectation and the second-moment function for solving the corresponding equations are given. The estimation of the influence of random factors on the system, in the case of replacing the random coefficient of the equation by its mathematical expectation, is determined. An example with the Gaussian distribution of the random coefficients is also presented and discusser. This paper shows that the proposed model is applicable to the description of heat and moisture transfer processes in the surface layer of the atmosphere.
ON THE TYROSINATE INVOLVEMENT IN THE SCHIFF BASE DEPROTONATION IN THE PROTON PUMP CYCLE OF BACTERIORHODOPSIN (1984)

Abstract— The ultraviolet transient absorption assigned to the tyrosinate species in bacteriorhodopsin is followed in time and as a function of pH. Both its rise time and titration curve closely resemble those observed for the production of the M 412 intermediate. These results may support a recently proposed mechanism that couples tyrosinate production to the Schiff base deprotonation in the proton pump of bacteriorhodopsin.
Raman spectroscopy and strain mapping in individual Ge-SixGe1-x core-shell nanowires (2012)

Core-shell Ge-SixGe1-x nanowires (NWs) are expected to contain large strain fields due to the lattice-mismatch at the core/shell interface. Here we report the measurement of core strain in a NW heterostructure using Raman spectroscopy. We compare the Raman spectra, and the frequency of the Ge-Ge mode measured in individual Ge-Si0.5Ge0.5 core-shell, and bare Ge NWs. We find that the Ge-Ge mode frequency is diameter-independent in GeNWs with a value similar to that of bulk Ge, 300.5 cm-1. On the other hand, Ge-Si0.5Ge0.5 core-shell nanowires reveal a strain-induced blue shift of the Ge-Ge mode, dependent on the relative core and shell thicknesses. Using lattice dynamical theory we determine the strain in the Ge core, and show that the results are in good agreement with values calculated using a continuum elasticity model.
High Speed Silicon based optical modulators (2012)

In the last 8 years carrier depletion modulators have become the mainstream high data rate building block for high performance silicon photonics link. In this work we describe carrier depletion MZI and ring modulators, cavity structures for modulation enhancement and QCSE modulators, all of which are under development as part of the UK Silicon Photonics project and the European HELIOS project.
Altered Renal Expression of Angiotensin II Receptors, Renin Receptor, and ACE-2 Precede the Development of Renal Fibrosis in Aging Rats (2010)

Age-related intrarenal activation of the RAS preceded the development of severe renal fibrosis, suggesting that it contributes to the increased susceptibility to renal injury observed in the elderly.