The theory of flotation. Determination of sufficient time for flotation process, features

Представлена концепція визначення достатнього часу процесу флотації у водному середовищі.Представлена концепция определения достаточного времени процесса флотации в водной среде.The concept of determining the sufficiency of flotation process time in aqueous medium is presented

Subcarrier Wave Quantum Key Distribution in Telecommunication Network with Bitrate 800 kbit/s

In the course of work on creating the first quantum communication network in Russia we demonstrated quantum key distribution in metropolitan optical network infrastructure. A single-pass subcarrier wave quantum cryptography scheme was used in the experiments. BB84 protocol with strong reference was chosen for performing key distribution. The registered sifted key rate in an optical cable with 1.5 dB loss was 800 Kbit/s. Signal visibility exceeded 98%, and quantum bit error rate value was 1%. The achieved result is a record for this type of systems

Magnetic resonance imaging on sodium nuclei: potential medical applications of 23Na MRI

Sodium is a key element in a living organism. The increase of its concentration is an indicator of many pathological conditions. 23Na magnetic resonance imaging (MRI) is a quantitative method that allows to determine the sodium content in tissues and organs in vivo. This method has not yet entered clinical practice widely, but it has already been used as a clinical research tool to investigate diseases such as brain tumors, breast cancer, stroke, multiple sclerosis, hypertension, diabetes, ischemic heart disease, osteoarthritis. The active development of the 23Na MRI is promoted by the growth of available magnetic elds, the expansion of hardware capabilities, and the development of pulse sequences with ultra-short echo time

Antidiabetic Biguanides as Anti-Aging Drugs

Evidence has emerged that metformin and other antidiabetic biguabides are promising candidates for pharmacological interventions leading to slowing down of aging, prolonged life span and preventing or postponing age-associate diseases, including cancer. In this chapter, the available data on effects of biguanides in rodents are summarized and discussed

Antidiabetic Biguanides as Anti-Aging Drugs

Evidence has emerged that metformin and other antidiabetic biguabides are promising candidates for pharmacological interventions leading to slowing down of aging, prolonged life span and preventing or postponing age-associate diseases, including cancer. In this chapter, the available data on effects of biguanides in rodents are summarized and discussed