Extra lepton pair emission corrections to Drell-Yan processes in PHOTOS and SANC

In the paper we present results for final state emissions of lepton pairs in decays of heavy intermediate states such as Z boson. Short presentations of PHOTOS and SANC algorithms and physics assumptions are given. Numerical distributions of relevance for LHC observables are shown. They are used in discussions of systematic errors in the predictions of pair emissions as implemented in the two programs. Suggestions for the future works are given. Present results confirm, that for the precision of 0.3% level, in simulation of final state the pair emissions can be avoided. For the precision of 0.1-0.2%, the results obtained with the presented programs should be enough. To cross precision tag of 0.1%, the further work is however required.Comment: 21 pages, 12 figure

QED Bremsstrahlung in decays of electroweak bosons

Isolated lepton momenta, in particular their directions are the most precisely measured quantities in pp collisions at LHC. This offers opportunities for multitude of precision measurements. It is of practical importance to verify if precision measurements with lep- tons in the final state require all theoretical effects evaluated simultaneously or if QED bremsstrahlung in the final state can be separated without unwanted precision loss. Results for final state bremsstrahlung in the decays of narrow resonances are obtained from the Feynman rules of QED in an unambiguous way and can be controlled with a very high precision. Also for resonances of non-negligible width, if calculations are appropriately performed, such separation from the remaining electroweak effects can be expected. Our paper is devoted to validation that final state QED bremsstrahlung can indeed be separated from the rest of QCD and electroweak effects, in the production and decay of Z and W bosons, and to estimation of the resulting systematic error. The quantitative discussion is based on Monte Carlo programs PHOTOS and SANC, as well as on KKMC which is used for benchmark results. We show, that for a large classes of W and Z boson observables as used at LHC, theoretical error on photonic bremsstrahlung is 0.1 or 0.2%, depending on the program options used. An overall theoretical error on QED final state radiation, i.e. taking into account missing corrections due to pair emission and interference with initial state radiation is estimated respectively at 0.2% or 0.3% again depending on the program option used.Comment: 1+28 pages, 20 figure

Control of electrochemical dimensional processing on the basis of synergy of controllable factors

© Published under licence by IOP Publishing Ltd. The article considers the factors that influence the electrochemical dimensional processing, which have synergistic connections. It is revealed that the size of the interelectrode gap is of great importance for ensuring the quality of processing, and methods for adjusting the gap during processing are proposed

Management of processes of electrochemical dimensional processing

© Published under licence by IOP Publishing Ltd. In different industries a lot high-precision parts are produced from hard-processed scarce materials. Forming such details can only be acting during non-contact processing, or a minimum of effort, and doable by the use, for example, of electro-chemical processing. At the present stage of development of metal working processes are important management issues electrochemical machining and its automation. This article provides some indicators and factors of electrochemical machining process

The analysis and selection of methods and facilities for cutting of naturally-deficit materials

The comparison of perspective methods is done in the article, such as laser, plasma and combined electro-diamond methods of hard processed materials cutting. There are the review and analysis of naturally-deficit materials cutting facilities. A new electrode-tool for the combined cutting of naturally-deficit materials is suggested. This electrode-tool eliminates electrical contact between the cutting electrode-tool and side surfaces of the channel of cutting workpiece cut, which allows to obtain coplanar channels of cut

Problems of development of electrochemical production of Russia and possibility of their decision

© Published under licence by IOP Publishing Ltd. The relevance of the study of the current state of electrochemical production is that electrochemistry every year is becoming increasingly important in the domestic industry. The development of electrochemical methods of processing leads to an increase in both the processing capacity and the achievement of new technical effects, significantly increasing the strength, durability and other performance parameters of the parts

Influence of introduction of robotics on increase in efficiency of electrochemical production

© Published under licence by IOP Publishing Ltd. The relevance of the study of the impact of the introduction of robotics to improve production efficiency is that it affects the level of development of domestic engineering. The article offers an economic justification of the use of the robot to automate the process of electrochemical machining of workpieces, in order to improve the quality of parts and improve production efficiency

New electrode-tool for the combined kerf of electrically conductive materials

© Published under licence by IOP Publishing Ltd. The article explains the choice of combination electrodiamond cutting as the most suitable method for separating solid, hard-processing deficient alloys. When processing by this method, the electrode-tool comes into electrical contact with the side surfaces of the cut channel, giving rise to excessive metal removal is not controllable. To solve this problem, it introduced a new electrode-tool

E.Coli derived camelid antibodies as a sensor for P53 in saliva

Oral squamous cell carcinoma (OSCC) is a malignant tumor with 640,000 new cases annually in the world [1]. Saliva testing is non-invasive procedure that is capable to detect potential biomarkers for OSCC. It was shown that elevated level of p53 protein was identified in OSCC patients at different stages of the disease (ibid). Camelid antibodies containing only variable regions, nanobodies (VHH) and single-chain variable regions (scFv) with VH and VL, are becoming popular in many biological studies including diagnostic applications. It was identified that VL region alone showed higher affinity to p53 than VHH, and dimerization of VL region with another one increases the affinity up to 10 folds [2]. Camelid antibodies have similar affinity to its substrate as human antibodies and can be conjugated to other proteins without functional lose. They can be expressed and secreted in many organisms including E.Coli in high amount, which reduces the cost of antibodies production. Thus, the aim of this project is to design a biosensor, based on available sequence of antibodies, to detect p53 in saliva samples for OSCC diagnosis

SH-Synthesis of Nanostructured Materials Based on SiO2+Al+CaSiO3 with Wollastonite after Ultrasonic Treatment

This paper presents the results of a complex study of the structure and properties of wollastonite after ultrasonic treatment (UST) and its effect on the development of the process of technological combustion (SHS) of systems based on quartz, the structure and properties of synthesized composition materials. Ultrasonic treatment of wollastonite of the brand FW100 was carried out in water and 5% aqueous solutions of different alcohols and acids at 40 and 100 kHz as well as at simultaneous UST action of 40 and 100 kHz during 20-60 minutes. In the presence of different organic modifying additives during UST there takes place not only milling of wollastonite particles and erosion of their surface but also different complex structural changes on the surface of particles and their capsulation into colloidal conglomerates. All the structural changes taking place in wollastonite particles under the conditions of UST result also in the change of the chemical activity of the material, which effects the thermal characteristics of the combustion process (SH-synthesis) of the systems containing UST modified wollastonite in the charge mixture. It is stated that, when introducing wollastonite after ultrasonic treatment into SHS-charge, there takes place a more complete conversion of initial components in the combustion process. The greatest amount of corundum and nanocrystalline silicon is formed, when using wollastonite treated in water, aqueous solution of polyvinyl alcohol and acetylsalicylic acid. The synthesized samples are characterized by high stable values of strength (up to 73 MPa) and indices of electric insulation properties