836 research outputs found

    The role of microorganisms in the weathering of rocks. 1 - Microflora of the surface layer of rocks

    Get PDF
    Microbiological analyses of surface layers of rocks to determine role of microorganisms in weathering of rock

    The role of microorganisms in the weathering of rocks. 2 - Focal distribution of microorganisms on the surface of rocks

    Get PDF
    Microorganism growth in synthetic medium using rock as mineral nutrient source, and rock weathering due to microorganism

    EAS spectrum in the primary energy region above 10 to the 15th power eV by the Akeno and Yakutsk array data

    Get PDF
    The extensive air showers spectrum on scintillation desity Rko in primary energy region E sub approx. 10 to the 15th power - 10 to the 20th power eV on the Yakutsk array data and recent results of the Akeno is given

    All particle energy spectrum of cosmic rays in 10 to the 15th power - 10 to the 20th power eV region

    Get PDF
    Average estimations of the shower energy components are presented and their sum gives E sub 0 (Rho sub 600) - an average function of the relation of E sub 0 with the shower size parameter Rho sub 600 measured at the Yakutsk extensive air showers (EAS) array. Using this relation to the EAS spectrum obtained at the Akeno and Yakutsk arrays the energy spectrum of the cosmic ray total flux within 15 lg (E sub 0,eV) 20 by the EAS methods is recovered

    Fluctuations of development maximum depth and nuclear composition of primary cosmic radiation

    Get PDF
    The extensive air showers (EAS) cascade curves from the Cerenkov light lateral distribution measurements are recovered and the maximum depth fluctuations of the shower development theta x sub m both on the Cerenkov and charged EAS components are defined. At E sub 0 approximates 10 to the 18th power eV the mean content of protons is greater than 85%, and p-air cross section theta sub 0 p-air 750mb

    On athermic mechanism of materials radiation embrittlement

    Get PDF
    To elucidate the mehanisms of radiation embrittlement of materials the temperature dependence of mechanical properties of irradiated materials has been studiedyesBelgorod State Universit

    Π‘Π ΠΠ’ΠΠ˜Π’Π•Π›Π¬ΠΠ«Π™ ΠΠΠΠ›Π˜Π— Π­ΠšΠ—ΠžΠ‘ΠžΠœ ΠšΠ›Π•Π’ΠžΠš Π­Π‘Π’Π ΠžΠ“Π•Π-Π Π•Π—Π˜Π‘Π’Π•ΠΠ’ΠΠžΠ“Πž РАКА ΠœΠžΠ›ΠžΠ§ΠΠžΠ™ Π–Π•Π›Π•Π—Π«

    Get PDF
    The exosomes involvement in the pathogenesis of tumors is based on their property to incorporate into theΒ recipient cells resulting in the both genomic and epigenomic changes.Β  Earlier we have shown that exosomesΒ from different types of estrogen-independent breastΒ  cancer cells (MCF-7/T developed by long-term tamoxifenΒ treatment, and MCF-7/M)Β  developed by metformin treatment were able to transfer resistance to the parentΒ MCF-7Β  cells. To elucidate the common features of the both types of resistant exosomes, theΒ  proteome andΒ microRNA cargo of the control and both types of the resistant exosomes wereΒ  analyzed. Totally, more thanΒ 400 proteins were identified in the exosome samples. Of theseΒ  proteins, only two proteins, DMBT1 (Deleted inΒ Malignant Brain Tumors 1) and THBS1Β  (Thrombospondin-1), were commonly expressed in the both resistantΒ exosomes (less thanΒ  5% from total DEPs) demonstrating the unique protein composition of each type of theΒ resistant exosomes. The comparative analysis of the miRNA differentially expressed inΒ  the both MCF-7/T andΒ MCF-7/M resistant exosomes revealed 180 up-regulated and 202Β  down-regulated miRNAs. Among them,Β 4 up-regulated and 8 down-regulated miRNAs wereΒ  associated with progression of hormonal resistance ofΒ breast tumors. The bioinformaticalΒ  analysis of 4 up-regulated exosomal miRNAs revealed 2 miRNAs, mir-Β 101and mir-181b, which up-regulated PI3K signalingΒ  supporting the key role of PI3K/Akt in the developmentΒ of the resistant phenotype of breast cancer cells.УчастиС экзосом Π² ΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Π΅Π·Π΅ злокачСствСнных ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅ΠΉ основано Π½Π° ΠΈΡ… способности ΠΏΡ€ΠΎΠ½ΠΈΠΊΠ°Ρ‚ΡŒ Π²Π½ΡƒΡ‚Ρ€ΡŒΒ  ΠΊΠ»Π΅Ρ‚ΠΎΠΊ-Ρ€Π΅Ρ†ΠΈΠΏΠΈΠ΅Π½Ρ‚ΠΎΠ², вызывая Π² послСдних каскад гСнСтичСских ΠΈ эпигСнСтичСских ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ. Π Π°Π½Π΅Π΅Β ΠΌΡ‹Β  ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, Ρ‡Ρ‚ΠΎ экзосомы, ΠΏΡ€ΠΎΠ΄ΡƒΡ†ΠΈΡ€ΡƒΠ΅ΠΌΡ‹Π΅ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π°ΠΌΠΈ эстрогСн-нСзависимых сублиний клСток  Ρ€Π°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ (MCF-7/T, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½ΠΎΠΉ Π² Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ Π΄Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΊΡƒΠ»ΡŒΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ ΠΊΠ»Π΅Ρ‚ΠΎΠΊΒ Π²Β  присутствии антиэстрогСна тамоксифСна, ΠΈ MCF-7/M, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½ΠΎΠΉ Π² Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ ΠΊΡƒΠ»ΡŒΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡΒ ΠΊΠ»Π΅Ρ‚ΠΎΠΊ с  ΠΌΠ΅Ρ‚Ρ„ΠΎΡ€ΠΌΠΈΠ½ΠΎΠΌ), способны ΠΈΠ½Π΄ΡƒΡ†ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Ρ€Π΅Π·ΠΈΡΡ‚Π΅Π½Ρ‚Π½ΠΎΡΡ‚ΡŒ Π² Ρ€ΠΎΠ΄ΠΈΡ‚Π΅Π»ΡŒΡΠΊΠΈΡ… ΠΊΠ»Π΅Ρ‚ΠΊΠ°Ρ… MCF-7.Β Π’ настоящСй Ρ€Π°Π±ΠΎΡ‚Π΅Β  для исслСдования Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½Ρ‹Ρ… особСнностСй состава экзосом рСзистСнтных клСток Π±Ρ‹Π» ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Β  ΡΡ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΏΡ€ΠΎΡ‚Π΅ΠΎΠΌΠ° ΠΈ профиля ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠš ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½Ρ‹Ρ… экзосом и экзосом, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΎΡ‚Β  рСзистСнтных сублиний. Π’ Ρ†Π΅Π»ΠΎΠΌ Π² ΠΎΠ±Ρ€Π°Π·Ρ†Π°Ρ… экзосом Π±Ρ‹Π»ΠΎ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½ΠΎΒ Π±ΠΎΠ»Π΅Π΅ 400 Π±Π΅Π»ΠΊΠΎΠ², ΠΈΠ· ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ…Β  Ρ‚ΠΎΠ»ΡŒΠΊΠΎ 2 Π±Π΅Π»ΠΊΠ°, DMBT1 (Deleted in Malignant Brain Tumors 1) ΠΈ THBS1Β (Thrombospondin-1), Π±Ρ‹Π»ΠΈΒ  гипСрэкспрСссированы Π² ΠΎΠ±ΠΎΠΈΡ… Ρ‚ΠΈΠΏΠ°Ρ… рСзистСнтных экзосом (ΠΌΠ΅Π½Π΅Π΅ 5 % ΠΎΡ‚Β ΠΎΠ±Ρ‰Π΅Π³ΠΎ количСства Π±Π΅Π»ΠΊΠΎΠ²,Β  Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎ экспрСссированных Π² экзосомах рСзистСтных ΠΊΠ»Π΅Ρ‚ΠΎΠΊ), Ρ‡Ρ‚ΠΎΒ ΡΠ²ΠΈΠ΄Π΅Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΡƒΠ΅Ρ‚ ΠΎΠ± ΡƒΠ½ΠΈΠΊΠ°Π»ΡŒΠ½ΠΎΠΌΒ  составС ΡΠΊΠ·ΠΎΡΠΎΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… Π±Π΅Π»ΠΊΠΎΠ² для ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ Ρ‚ΠΈΠΏΠ° рСзистСнтных ΠΊΠ»Π΅Ρ‚ΠΎΠΊ.Β Π‘Ρ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ·Β  состава ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠš, Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎ экспрСссированных Π² ΠΎΠ±ΠΎΠΈΡ… вариантах экзосом рСзистСнтных ΠΊΠ»Π΅Ρ‚ΠΎΠΊ,Β  выявил 180 гипСрэкспрСссированных ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠš ΠΈ 202 ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠš с ΠΏΠΎΠ½ΠΈΠΆΠ΅Π½Π½ΠΎΠΉ экспрСссиСй. Π‘Ρ€Π΅Π΄ΠΈ Π½ΠΈΡ… 4Β  гипСрэкспрСссированных ΠΈ 8 гипоэкспрСссированных ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠšΒ ΠΎΠΊΠ°Π·Π°Π»ΠΈΡΡŒ ассоциированы с Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠ΅ΠΌΒ  Π³ΠΎΡ€ΠΌΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ рСзистСнтности ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Ρ€Π°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹. БиоинформатичСский Π°Π½Π°Π»ΠΈΠ· 4Β  гипСрэкспрСссированных ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠš выявил 2 ΠΌΠΈΠΊΡ€ΠΎΠ ΠΠš, mir-101ΠΈΒ mir-181b, ΡƒΡ‡Π°ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… Π² стимуляции PI3KΒ  сигналинга, ΡΠ²ΠΈΠ΄Π΅Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΡƒΡ ΠΎ Π²Π°ΠΆΠ½ΠΎΠΉ Ρ€ΠΎΠ»ΠΈ послСднСго Π²Β Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠΈ Π³ΠΎΡ€ΠΌΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ рСзистСнтности  ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Ρ€Π°ΠΊΠ° ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹.

    Hypothesis of functional organ as a psychophysiological scientific basis of medical qigong

    Get PDF
    Application features of medical qigong in world and in Russia were described. Special exercises and practice qigong regarded as psychotherapeutic complex of psychic self-regulation techniques. It was hypothesized of the channels of qigong as functional organs, formed as a result of systematic training
    • …
    corecore