Detector for imaging of explosions: present status and future prospects with higher energy X-rays

The detector for imaging of explosions (DIMEX) is in operation at the synchrotron radiation (SR) beam-line at VEPP-3 electron ring at Budker INP since 2002. DIMEX is based on one-coordinate gas ionization chamber filled with Xe-CO2(3:1) mixture at 7atm, and active Frisch-grid made of Gas Electron Multiplier (GEM). The detector has spatial resolution of ~0.2mm and dynamic range of ~100 that allows to realize the precision of signal measurement at a percent level. The frame rate can be tuned up to 8 MHz (125 ns per image) and up to 32 images can be stored in one shot. At present DIMEX is used with the X-ray beam from 2T wiggler that has ~20 keV average energy. Future possibility to install similar detector at the SR beam-line at VEPP-4 electron ring is discussed.Comment: 14 pages, 15 figures. Submitted to JINS

Detector for imaging of explosions: present status and future prospects with higher energy X-rays

The detector for imaging of explosions (DIMEX) is in operation at the synchrotron radiation (SR) beam-line at VEPP-3 electron ring at Budker INP since 2002. DIMEX is based on one-coordinate gas ionization chamber filled with Xe-CO2(3:1) mixture at 7atm, and active Frisch-grid made of Gas Electron Multiplier (GEM). The detector has spatial resolution of ~0.2mm and dynamic range of ~100 that allows to realize the precision of signal measurement at a percent level. The frame rate can be tuned up to 8 MHz (125 ns per image) and up to 32 images can be stored in one shot. At present DIMEX is used with the X-ray beam from 2T wiggler that has ~20 keV average energy. Future possibility to install similar detector at the SR beam-line at VEPP-4 electron ring is discussed.Comment: 14 pages, 15 figures. Submitted to JINS

The use of antimicrobial drugs in preterm newborn: the experience of creating the formulary

A serious problem of treatment of infectious disease in preterm infants is the lack of sufficient information on pharmacokinetics of antibiotics in this group of patients. This is due to the insufficient number of clinical trials with premature babies, so in practice is difficult for doctor to choose appropriate antibiotic dose and frequency of dosing him. We have summed up the experience of the American pediatric form NEOFAX, British pediatric form, some clinical trials results and selected the optimal dosing regimen of antibacterial drugs based on gestational and post-conceptual age. This will contribute to safety and efficiency in the treatment of infectious diseases in premature infants caused primarily problematic nosocomial pathogens, such as Acinetobacter spp., Klebsiella pneumonia, Pseudomonas aeruginosa, MRSA, and reduce the risk of adverse drug reactions

Исследование свойств эластомерных материалов, наполненных модифицированным техническим углеродом в сочетании со связующим агентом

Possibility of interaction between modified by proposed method carbon black and silane coupling agent is shown. It allows to optimize hysteresis properties of elastomer composites, while modified carbon black leads to increasing in its hardness at impact load.Показана возможность взаимодействия связующего агента (силана) с модифи-цированным предложенным способом техническим углеродом, что позволяет оптимизировать гистерезисные свойства эластомерных композитов, в то время как модифицированный технический углерод позволяет улучшить их упруго-прочностные свойства

The investigation of properties of elastomer materials filled with modified carbon black and coupling agent.

Possibility of interaction between modified by proposed method carbon black and silane coupling agent is shown. It allows to optimize hysteresis properties of elastomer composites, while modified carbon black leads to increasing in its hardness at impact load