New results on exclusive hadron production in e+e− annihilation obtained in experiments with the SND detector at the VEPP-2M and VEPP-2000 e+e− colliders are presented.
SND tracking system—Tests with cosmic muons Aulchenko, V.M.; Bogdanchikov, A.G.; Botov, A.A. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
2009, 2009-1-00, Letnik:
598, Številka:
1
Journal Article
Recenzirano
Tracking system of the SND detector is fully assembled, equipped and tested with cosmic muons in 2007. During these tests operation conditions of the system were checked and optimized and main ...parameters of the system were measured. Design values of gas gain, detection efficiency and space resolution were achieved. Tracking system is ready for installation into the SND detector and coming data taking at the VEPP-2000
e
+
e
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-collider in Novosibirsk.
In order to develop methods and means of maintaining normal human functioning under conditions of desynchronizes, the effect of mexidol on the level of corticosterone in the blood serum and the state ...of the cells of the beam zone of the adrenal cortex of rats after light or dark deprivation and physical activity to a state of fatigue.
The experiments were performed on 7 groups of rats (10 animals each) in the spring. The model of physical activity is the method of forced swimming of rats until exhaustion in its own modification. For the induction of experimental desynchronizes, the animals of the experimental groups were kept around the clock for 10 days with artificial bright light of 150 LX or a complete darkening of 2-3 LX. Mexidol was administered intramuscularly at a dose of 10 mg/kg animal 30 minutes before the swimming test. Control animals under similar conditions were administered 0.9% sodium chloride solution. The level of corticosterone in the serum was determined using enzyme immunoassay. The measurements were carried out on a programmable photometer for STAR FAX 303 PLUS microsamples (USA). Histological analysis of the adrenal glands was carried out according to standard methods. Microscopy of preparations, imaging and measurements were carried out using an Axio Lab A1 microscope, an AxioCamERc 5s camera and ZEN 2012 software («Carl Zeiss Microscopy», Germany). Statistical processing of the results was carried out using standard parametric and non-parametric methods, depending on the nature of the distributions.
Mexidol under combined successive stress loads - desynchronizes and physical activity - demonstrated anti-stress properties not only at the level of corticosterone in the blood serum of rats, but also at the level of adrenal glands. The severity of this effect of the drug depended on the number of stress loads (isolated physical or shown in conditions of desynchronizes), the phase of stress and the nature of deprivation. Under natural lighting conditions and after light deprivation, when animals were in the anxiety phase of varying severity, the drug worked more reliably than after dark deprivation in conditions of developing depletion. Nevertheless, even in the latter case, he showed himself as a means of preventing exhaustion in animals and the breakdown of adaptation.
Advanced heart failure V. V. Kalyuzhin; A. T. Teplyakov; I. D. Bespalova ...
Bi͡u︡lletenʹ Sibirskoĭ medit͡s︡iny,
04/2021, Letnik:
20, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The authors of the article have analyzed the problem of advanced heart failure (AHF). Despite significant and, it is not an exaggeration to say, revolutionary achievements in clinical pharmacology, ...cardiac surgery and implantation arrhythmology, the number of patients with chronic heart failure (CHF) in many countries is not decreasing, and in some, for example, in Russia, it is increasing. At the same time, unfortunately, often the immediate and longterm results of the so-called optimal therapy of CHF are disappointing for both the patient and the doctor. In 2007, experts from The Heart Failure Association of the European Society of Cardiology proposed the term AHF to refer to CHF in which optimal drug therapy, as well as cardiac resynchronization therapy, are not effective, which causes repeated hospitalizations and justifies the need for the advanced treatment methods such as heart transplantation and mechanical circulatory support, and/or transition to palliative care. The agreed positions of experts from the established cardiological communities in the Old and New Worlds on the definition, diagnostic criteria and treatment of AHF have been changing over time. Unfortunately, this evolution has not yet arrived at a consensus. The lecture consistently addresses the issues of terminology, diagnosis, prognostic stratification and routing of patients with AHF, as well as short- and long-term strategies for treating these patients.
Recent results on e+e− annihilation to hadrons from SND experiment at VEPP-2000 and VEPP-2M colliders are presented. Corresponding data set is about 100 pb−1 of integrated luminosity collected at the ...energy region s below 2 GeV. The processes e+e−→K+K−, π0γ, ηπ+π−π0 and ωπ0η have been studied.
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