Poly (propylene fumarate) (PPF), a linear unsaturated polyester consisting of alternating propylene glycol and fumaric acid units, can be cured in vivo to fill the skeletal defects with minimal surgical intervention. Many different methods have been reported for synthesizing PPF, but none of them gives a clear method. The present paper introduces two new methods in PPF synthesis: Modified reflu...

Abstract The Future Circular Collider FCC-ee aims at unprecedented luminosities to be obtained with the crab-waist collision scheme. In this paper we describe mechanical model of interaction region layout including its assembly procedure. After a discussion on requirements and constraints, present engineered design vacuum chamber cooling system, bellows, vertex outer tracker detectors their int...

Stochastic cooling of the spectrometer ring (SRing) at High Intensity Heavy-Ion Accelerator Facility (HIAF) project in China, which is used mainly for experiments with radioactive fragment beams, applied to speed up process a stored ion beam. In this study, both Faltin traveling wave structure and novel slot-ring standing based on ceramic vacuum chamber are discussed evaluated pickup/kicker SRi...

Abstract Nanochanneled silicon targets with high positron/positronium (Ps) conversion rate and efficient Ps cooling were produced. Morphological parameters of the nanochannels, such as their diameter length, adjusted to get a large fraction thermalized at room temperature being emitted into vacuum. measurements conducted combining single-shot positron annihilation lifetime spectroscopy Doppler ...

Honey is a natural liquid that commonly used as an addition to food or drinks and has properties thatare believed increase endurance cure various diseases. different characteristics basedon taste, aroma, color. This can not be separated from the physico-chemical content of honey. Highwater in honey reduce shelf life because it cause fermentation by yeast.So, this study, cassava was processed us...

In the present work, a mesoporous multiphase amorphous crystal nanopowder Bi2O3 with specific surface area of up to 23 m2/g was produced by pulsed electron beam evaporation in vacuum. Influence thermal annealing (200-500 °C) powders air is investigated. The formation droplets size 3-5 nm on all large nanoparticles constituting framework 3D agglomerates found due extrusion liquid bismuth from vo...

Following a brief historical overview on the origin and the evolution of Schottky noise we discuss applications in the field of beam diagnostics in particle accelerators. A very important aspect of Schottky diagnostics is the fact that it is a non perturbing method. Essentially statistics based, it permits to extract beam relevant information from rms (root mean square) noise related to the mov...

Abstract The article presents the results of analysis methodological approaches to development a mobile space simulator test facility following low-budget project under conditional name Metamorphosis. was performed at Institute Aeronautics Riga Technical University together with Cryogenic and Vacuum Systems Ltd., company specializing in production vacuum cryogenic equipment, extensive experienc...