35 research outputs found
Enrichment of colloidal solutions by nanoparticles in underwater spark discharge
The underwater spark discharge between manganese granules was studied. Optical emission spectroscopy meth-ods were used for diagnostics of such discharge plasma. The colloidal solution with manganese nanoparticles was produced by this discharge. The biological applications of this colloid were analyzed. The mechanism of metallic nanoparticle action and their transformation at interacting with biological objects were studied in Alternaria alternata culture.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΡΠΉ ΠΈΡΠΊΡΠΎΠ²ΠΎΠΉ ΡΠ°Π·ΡΡΠ΄ ΠΌΠ΅ΠΆΠ΄Ρ Π³ΡΠ°Π½ΡΠ»Π°ΠΌΠΈ ΠΌΠ°ΡΠ³Π°Π½ΡΠ°. ΠΠ»Ρ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΡΠ°ΠΊΠΎΠΉ ΡΠ°Π·ΡΡΠ΄Π½ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΌΠΈΡΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ. ΠΡΠΎΡ ΡΠ°Π·ΡΡΠ΄ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΡΡ Π΄Π»Ρ ΠΏΡΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΡ ΠΊΠΎΠ»Π»ΠΎΠΈΠ΄Π½ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠ° Ρ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΠ°ΠΌΠΈ ΠΌΠ°ΡΠ³Π°Π½ΡΠ°. ΠΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Ρ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ°ΠΊΠΎΠ³ΠΎ ΠΊΠΎΠ»Π»ΠΎΠΈΠ΄Π°. ΠΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΠΌΠ΅ΡΠ°Π»Π»Π° ΠΈ ΠΈΡ
ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΈΡ ΠΏΡΠΈ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Ρ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ°ΠΌΠΈ ΠΈΠ·ΡΡΠ°Π»ΠΈΡΡ Π½Π° ΠΊΡΠ»ΡΡΡΡΠ΅ Alternaria alternata.ΠΠΎΡΠ»ΡΠ΄ΠΆΡΠ²Π°Π»ΠΈ ΠΏΡΠ΄Π²ΠΎΠ΄Π½ΠΈΠΉ ΡΡΠΊΡΠΎΠ²ΠΈΠΉ ΡΠΎΠ·ΡΡΠ΄ ΠΌΡΠΆ Π³ΡΠ°Π½ΡΠ»Π°ΠΌΠΈ ΠΌΠ°ΡΠ³Π°Π½ΡΡ. ΠΠ»Ρ Π΄ΡΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΡΠ°ΠΊΠΎΡ ΡΠΎΠ·ΡΡΠ΄Π½ΠΎΡ ΠΏΠ»Π°Π·ΠΌΠΈ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΠΎΠΏΡΠΈΡΠ½ΠΎΡ Π΅ΠΌΡΡΡΠΉΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ. Π¦Π΅ΠΉ ΡΠΎΠ·ΡΡΠ΄ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈ Π΄Π»Ρ ΠΏΡΠΈΠ³ΠΎΡΡΠ²Π°Π½Π½Ρ ΠΊΠΎΠ»ΠΎΡΠ΄Π½ΠΎΠ³ΠΎ ΡΠΎΠ·ΡΠΈΠ½Ρ Π· Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΠ½ΠΊΠ°ΠΌΠΈ ΠΌΠ°ΡΠ³Π°Π½ΡΡ. ΠΡΠΎΠ°Π½Π°Π»ΡΠ·ΠΎΠ²Π°Π½Ρ Π±ΡΠΎΠ»ΠΎΠ³ΡΡΠ½Ρ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ ΡΡΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΎΡΠ΄Ρ. ΠΠ΅Ρ
Π°Π½ΡΠ·ΠΌ Π΄ΡΡ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΠ½ΠΎΠΊ ΠΌΠ΅ΡΠ°Π»Ρ ΡΠ° ΡΡ
ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΡΡ ΠΏΡΠΈ Π²Π·Π°ΡΠΌΠΎΠ΄ΡΡ Π· Π±ΡΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΈΠΌΠΈ ΠΎΠ±'ΡΠΊΡΠ°ΠΌΠΈ Π²ΠΈΠ²ΡΠ°Π»ΠΈΡΡ Π½Π° ΠΊΡΠ»ΡΡΡΡΡ Alternaria alternata
Investigation of Phenolic Compounds and Antioxidant Activity of <i>Sorbaria pallasii</i> (Rosaceae) Microshoots Grown In Vitro
Sorbaria pallasii is an endemic species of the Far East and Siberia and grows along the Goltsy altitudinal belt. Data on micropropagation and phytochemical characteristics of this plant are not available, probably because of the inaccessibility of the plant material. Morphogenesis initiation from flower buds of S. pallasii in vitro and micropropagation were performed here in the Murashige and Skoog medium supplemented with 5.0 Β΅M 6-benzylaminopurine and 0.0β1.0 Β΅M Ξ±-naphthylacetic acid; elongation was implemented in the same medium without the hormones. A well-growing sterile culture of S. pallasii was obtained; the number of microshoots per explant reached 5.7 Β± 1.2. Phytochemical analyses of in vitro propagated S. pallasii detected 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity in a water-ethanol extract from its microshoots and revealed phenolic compounds in it. The phenolic compounds that likely contribute to its biological activity are tannins (74.9 mg/g), phenolcarboxylic acids (30.8 mg/g), and catechins (13.3 mg/g). In the microshoot extract, high-performance liquid chromatography identified three catechins. Microshoots showed the highest concentration of (Β±)-catechin (3.03 mg/(g of absolutely dry mass; ADM)). Concentrations of epigallocatechin gallate (0.38 mg/(g of ADM)) and (β)-epicatechin (0.55 mg/(g of ADM)) were significantly lower. This study paves the way for further biotechnological and phytochemical research on S. pallasii
A refinement of a problem solution on small transverse vibrations of a straight section of a pipeline
Search for optimal control and design of self-optimizing system with linear speed by using analog computation facilities
Karyotypes and genome size of Adonis amurensis and Adonis apennina (Ranunculaceae) from Asian Russia
The karyotypes of Adonis amurensis from Amur Oblast,' and Adonis apennina from Altai Republic, Khakassia Republic, and Irkutsk Oblast' have been investigated. The karyotype formula was obtained as 2n = 2x =16 = 8m + 8sm(4sat) for all specimens. We estimated karyotype asymmetry through the calculation of the Coefficient of Variation of Chromosome Length (CVCL), Coefficient of Variation of Centromeric Index (CVCI), and Mean Centromeric Asymmetry (MCA), and determination of Stebbins asymmetry index. The chromosome set of Adonis amurensis was found to be more symmetrical than the chromosome set of Adonis apennina. The average absolute nuclear DNA content (2Π‘βvalue) was originally determined for Adonis amurensis and Adonis apennina by flow cytometry and attained on average 20.38 pg and 17.29 pg, respectivel