Behavior of Weathering Steel in Artificial Harsh Environment.

The safety and durability of engineering structures, like bridges, which are designed from weathering steels, are conditioned by the development of a sufficiently protective layer of corrosion products. Air pollution, the microclimate around the bridge, the time of wetness, the structural solution of the bridge, and the position and orientation of the surface within the bridge structure all influence the development of protective layers on the surface of the weathering steel. The condition of the formed patina relies on the working conditions of the structure.

Steel ribbed dome structural performance with different node connections and bracing system.

The conventional design of steel structure objects relies on a first-order elastic analysis, where the entire object is treated as a set of individual structural elements requiring time-consuming, semi-empirical design calculations. Such an approach leads to inefficient design time and excessive material consumption and may additionally result in designing on the verge of structural safety. The AEC sector's technological and digitization advancement process forces designers to use advanced design methods.

Mixed quantum/classical calculations of rotationally inelastic scattering in the CO + CO system: a comparison with fully quantum results.

An updated version of the CO + CO potential energy surface from [R. Dawes, X. G.

H2O-HCN complex: A new potential energy surface and intermolecular rovibrational states from rigorous quantum calculations.

In this work the H2O-HCN complex is quantitatively characterized in two ways. First, we report a new rigid-monomer 5D intermolecular potential energy surface (PES) for this complex, calculated using the symmetry-adapted perturbation theory based on density functional theory method. The PES is based on 2833 ab initio points computed employing the aug-cc-pVQZ basis set, utilizing the autoPES code, which provides a site-site analytical fit with the long-range region given by perturbation theory.

Analysis of the Possibility of Using Cenospheres in the Production of Cement Mortars for Use in an Elevated Temperature Environment.

The topic of research included in this article was the evaluation of the influence of cenospheres on selected parameters of mortar cement. Samples were designed as CEM I 42.5 R Portland cement with the application of different additive amounts.

Collisional energy transfer in the CO-CO system.

An accurate determination of the physical conditions in astrophysical environments relies on the modeling of molecular spectra. In such environments, densities can be so low ( ≪ 10 cm) that local thermodynamical equilibrium conditions cannot be maintained. Hence, radiative and collisional properties of molecules are needed to correctly model molecular spectra.

Vibration Energy Signal Information for Measure Dynamic Preferences of Ceramic Building Materials Using Experimental Modal Analysis Methodology.

Building constructions and their elements must meet requirements related to stability and strength. These are the conditions that determine the safety of the structure during both construction and operation. Safety assessment is based on diagnostic tests, aimed at checking the quality of the erected objects or locating damage to structural elements that arise during operation.

The Use of Modal Analysis in Addition Percentage Differentiation, and Mechanical Properties of Ordinary Concretes with the Addition of Fly Ash from Sewage Sludge.

Production cost reduction and constraints on natural resources cause the use of waste materials as substitutes of traditional raw materials to become increasingly important. The dynamic development of sewerage systems and sewage treatment plants leads to increases in the produced sewage sludge. According to the Waste Law, municipal sewage sludge can be used if it is properly stabilized.

An adaptive phase-locking insight to unravel mRNAs synchrony from microarray experiments.

A bulk mRNA expression time course can slow or advance modulating in phase the averaged expression of each gene within the cell-cycle. This is also a synchronism induced at the cycle start to recognize periodic genes. Consistent with the above, a novel adaptive phase-locking insight into microarray experiment is provided.

Insight into DNA periodicity by a single-channel sequence data approach.

It has not been obvious how to map a genomic sequence into the numbers to elucidate its periodicities by digital signal processing (DSP) in accord with the underlying biology [1]. The well known DNA spectra and their extensions appear the A-T-C-G--base-wise by Fourier (FT), wavelet (WT) or related transforms of the indicatory functions (IF-s) of these bases. The IF assumes either 1-in the presence or 0-in the absence of the indicated base in sequence.

Variations of road traffic noise in residential areas.

The ability to predict road noise in urban area is important. The community noise equivalent level (L(den)) varies from day to day (weekdays, weekends, holidays, etc.).

Is DNA code periodicity only due to CUF-codons usage frequency?

The triplet code for proteins and functional RNA has been either from the universal pattern of ancient RNA (-H1) [1], with a key role of an uneven codon usage frequency (CUF) in the periodic patterns origination, or a reading frame monitoring device (RFMD -H2) [2- 4]. H1 has lately been upheld [1] but in a single sequence sensitive way [1]. Since H1 and H2 are not mutually exclusive [2, 3, 4], a single sequence-wise sensitive approach by a resonant recognition model (RRM) has become the attempt described in this paper to challenge H1 and H2 in eukaryotes case as a novelty.

[The application of aerodynamic method for the evaluation of the efficiency of the vocal, articulation and respiratory organs during singing and playing wind instruments].

This paper discusses the application of the aerodynamic method for the estimation of the efficiency of the vocal articulation and respiratory organ during singing and playing wind instruments. An evaluation of the vocal and respiratory organ was carried out on the basis of an analysis and correlation between the following parameters: PV--phonation volume, MPT--maximum phonation/playing time, SP--subglottal/blowing pressure, MFR--mean flow rate, GR--glottal resistance, EP--expiratory power, W--work. Volume and airflow was measured by a pneumotachometr with an electronic spirometer.

Self-organizing algorithms for generalized eigen-decomposition.

We discuss a new approach to self-organization that leads to novel adaptive algorithms for generalized eigen-decomposition and its variance for a single-layer linear feedforward neural network. First, we derive two novel iterative algorithms for linear discriminant analysis (LDA) and generalized eigen-decomposition by utilizing a constrained least-mean-squared classification error cost function, and the framework of a two-layer linear heteroassociative network performing a one-of-m classification. By using the concept of deflation, we are able to find sequential versions of these algorithms which extract the LDA components and generalized eigenvectors in a decreasing order of significance.

[A study of the phenomenon of voice intonation: analysis, usage and diagnosis].

The aim of this work was to study the average rise time (RT) and average flow rate (MRT) in utterance. Data were collected from 48 singers and 44 patients. The group of patients included cases of modulus vocale, polypus laryngis, paresis bilateralis, hemiparesis, and CA laryngis.

[Aeroacoustic and pneumotachometric studies in the evaluation of vicarious voice in laryngectomy patients].

The aim the study was showed some spirometric and aerodynamic parameters of the respiratory system and of vicarious voice at laryngectomized patients, which were performed in plethysmographic cabin and by using of pneumotachometer. Clinical material stated 20 laryngectomized men, aged 45-77 years, who were divided into two groups (by Pruszewicz): A-well or very well speaking and B-bad speaking. The obtained results showed that laryngectomized well or very well speaking made bigger work of the respiratory system during vicarious voice than bad speaking ones.

[Scribner's shunt as a first step in creation of a Brescia type fistula].

The aim of this paper is to present the advantages of performing a vascular access in two steps in uremic patients requiring urgent hemodialysis. In 15 patients age 28-68 yrs. (mean 50 yrs.