90 research outputs found
Results of medical studies during long-term manned flights on the orbital Salyut-6 and Soyuz complex
Results of tests made on the crews of the Salyut-6 and Soyuz complex are presented. The basic results of studies made before, during and after 96-day and 140-day flights are presented in 5 sections: characteristics of flight conditions in the orbital complex; the cardiovascular system; the motor sphere and vestibular analyzer; biochemical, hematologic and immunologic studies; and recovery measures in the readaptation period
Drought and smut resistance of millet (Panicum miliaceum L.) seedlings
The aim of the work was to study the impact of drought on the millet (Panicum miliaceum L.) seed germination and morphological parameters of seedlings and to identify millet genotypes with balanced rhizo- and organogenesis under arid conditions. Since the soil drought weakens plant immunity during seed germination and provokes development of various diseases, especially smut (Sorosporium destruens (Schlecht) Yanki), it is necessary to identify plant genotypes with high resistance to virulent smut races. We studied resistance of 28 millet varieties to 13Β smut races registered in Ukraine. The osmotic PEG 6000 (23Β %) was used to simulate soil drought during the seed germination. After six days of incubation, seed germinability was assessed and the length of shoots and roots of seedlings was measured. The stress resistance of millet varieties was evaluated by the root length/shoot length ratio (R/S). Water deficit in the soil decreased seed germinability to 50.12Β %. Morphological changes were more pronounced in shoots (decrease in length by 77.3Β %) than in roots (decrease by 37.7Β %). Under favorable weather conditions, the rhizo- and organogenesis in seedlings was even (R/S=0.75Β±0.02). In case of soil drought, the ratio R/S dropped to 2.19Β±0.03. Most of the varieties were resistant to smut races Rs 1, Rs 5βRs 7, and Rs 9βRs 11; in addition, around 10Β % of the studied varieties was highly resistant (9β8 points) to smut races Rs 2, Rs 8, Rs 12, and Rs 13. Millet genotypes resistant to Rs 3 smut race were not found. Thus, the varieties with R/S ratio around one and higher should be considered the most valuable genetic material in selection for drought resistance. High R/S ratios were observed in the varieties Zapovitne (1.77), Zolushka (1.54), Olitan (1.4), Skado (1.79) and Danilo (1.79). The varieties Olitan and Danilo were highly resistant to the smut races Rs 1, Rs 4, RsΒ 7, Rs 9βRs 11, while the varieties Novokyivske 0.1 (2.17) and Konstantynivske (2.22) to the smut races RsΒ 1, Rs 4βRsΒ 7, Rs 9βRs 12. The variety Bila Altanka was not affected by the most virulent smut races Rs 2, Rs 8 and Rs 13. We recommend to include these millet genotypes in selection for drought and smut resistance
ΠΠ°Π³ΡΡΠ½ΡΠ΅ ΠΏΡΠΈΠ΅ΠΌΡ Π΄Π»Ρ ΠΊΡΠΏΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈΡΡΡΠΏΠΎΠ² ΡΠ°Ρ ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ Ρ Π΄Π΅ΡΠ΅ΠΈΜ: ΠΎΡΠ΅Π½ΠΊΠ° ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΎΠ±Ρ ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ
Background: Vagal techniques constitute the first line of medical care for terminating paroxysmal supraventricular tachycardia in children and adults due to ease of application, relative safety and possibility of avoiding injection of antiarrhythmic drugs. Effectiveness of vagal techniques depends on the method of execution, as well as a range of clinical and electrophysiological factors, which require study and specification. Objective: Our aim was to study effectiveness of the modified Valsalva test for terminating paroxysmal tachycardia in children. Methods: Effectiveness of the Valsalva test for terminating paroxysmal tachycardia induced in the course of a transesophageal electrophysiological examination in children aged 7β18 years was studied retrospectively. Results: Data of 306 children (mean age β 13.1 Β± 3.2 years) were analyzed; 130 of them (42.5%) suffered from paroxysmal AV nodal reentrant tachycardia (PAVNRT), 176 β from paroxysmal AV reentrant tachycardia involving an additional AV connection (PAVRT). Valsalva test was effective in 88 children (28.8%) β 44 children (33.8%) with PAVNRT and 44 children (25.1%) with PAVRT. In most cases, tachycardia was terminated by means of anterograde block: PAVRT β in 65.5% of the cases, PAVNRT β in 92.7% of the cases. Children with ineffective Valsalva test featured longer duration of the disorder (p = 0.035), higher rate of the initial sinus rhythm before a tachycardic paroxysm (p = 0.043) and higher rhythm rate during tachycardia (p = 0.019), as well as high level of AV node conduction (p = 0.038). Conclusion: Valsalva test terminates paroxysmal tachycardia in not more than 1/3 of children with paroxysmal AV reentrant tachycardia. Test effectiveness depends on duration of the disorder and electrophysiological characteristics of AV node conduction. Valsalva test is especially effective in the onset of tachycardic paroxysm and terminates it by means of anterograde AV node block in most cases.Β ΠΠ°Π³ΡΡΠ½ΡΠ΅ ΠΏΡΠΈΠ΅ΠΌΡ ΡΠ²Π»ΡΡΡΡΡ ΠΏΠ΅ΡΠ²ΠΎΠΈΜ Π»ΠΈΠ½ΠΈΠ΅ΠΈΜ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΈΜ ΠΏΠΎΠΌΠΎΡΠΈ ΠΏΡΠΈ ΠΊΡΠΏΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΠΏΡΠΈΡΡΡΠΏΠΎΠ² ΡΡΠΏΡΠ°Π²Π΅Π½ΡΡΠΈΠΊΡΠ»ΡΡΠ½ΠΎΠΈΜ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ Ρ Π΄Π΅ΡΠ΅ΠΈΜ ΠΈ Π²Π·ΡΠΎΡΠ»ΡΡ
, ΡΡΠΎ ΡΠ²ΡΠ·Π°Π½ΠΎ Ρ ΠΏΡΠΎΡΡΠΎΡΠΎΠΈΜ ΠΈΡ
Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ, ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠΈΜ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡΡΡ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡΡ ΠΈΠ·Π±Π΅ΠΆΠ°ΡΡ Π²Π²Π΅Π΄Π΅Π½ΠΈΡ Π°Π½ΡΠΈΠ°ΡΠΈΡΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ². ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ Π²Π°Π³ΡΡΠ½ΡΡ
ΠΏΡΠΈΠ΅ΠΌΠΎΠ² Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ ΡΠ΅Ρ
Π½ΠΈΠΊΠΈ ΠΈΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΡΠ΄Π° ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ°ΠΊΡΠΎΡΠΎΠ², ΠΊΠΎΡΠΎΡΡΠ΅ Π½ΡΠΆΠ΄Π°ΡΡΡΡ Π² ΠΈΠ·ΡΡΠ΅Π½ΠΈΠΈ ΠΈ ΡΡΠΎΡΠ½Π΅Π½ΠΈΠΈ. Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ: ΠΈΠ·ΡΡΠΈΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΈΜ ΠΏΡΠΎΠ±Ρ ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ Π΄Π»Ρ ΠΊΡΠΏΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈΡΡΡΠΏΠΎΠ² ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ Ρ Π΄Π΅ΡΠ΅ΠΈΜ. ΠΠ΅ΡΠΎΠ΄Ρ: Π² ΡΠ΅ΡΡΠΎΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΎΡΠ΅Π½ΠΈΠ²Π°Π»ΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΡΠΎΠ±Ρ ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ Π΄Π»Ρ ΠΊΡΠΏΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈΡΡΡΠΏΠΎΠ² ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ, ΠΈΠ½Π΄ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π² Ρ
ΠΎΠ΄Π΅ ΡΡΠ΅ΡΠΏΠΈΡΠ΅Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Ρ Π΄Π΅ΡΠ΅ΠΈΜ Π² Π²ΠΎΠ·ΡΠ°ΡΡΠ΅ ΠΎΡ 7 Π΄ΠΎ 18 Π»Π΅Ρ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ: ΠΈΠ·ΡΡΠ΅Π½Ρ Π΄Π°Π½Π½ΡΠ΅ 306 Π΄Π΅ΡΠ΅ΠΈΜ (ΡΡΠ΅Π΄Π½ΠΈΠΈΜ Π²ΠΎΠ·ΡΠ°ΡΡ 13,1 Β± 3,2 Π³ΠΎΠ΄Π°), ΠΈΠ· Π½ΠΈΡ
130 (42,5%) Ρ ΠΏΠ°ΡΠΎΠΊΡΠΈΠ·ΠΌΠ°Π»ΡΠ½ΠΎΠΈΜ ΠΠ-ΡΠ·Π»ΠΎΠ²ΠΎΠΈΜ ΡΠ΅ΡΠΈΠΏΡΠΎΠΊΠ½ΠΎΠΈΜ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠ΅ΠΈΜ (ΠΠΠΠ£Π Π’) ΠΈ 176 (57,5%) Ρ ΠΏΠ°ΡΠΎΠΊΡΠΈΠ·ΠΌΠ°Π»ΡΠ½ΠΎΠΈΜ ΠΠ-ΡΠ΅ΡΠΈΠΏΡΠΎΠΊΠ½ΠΎΠΈΜ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠ΅ΠΈΜ Ρ ΡΡΠ°ΡΡΠΈΠ΅ΠΌ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΠ-ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ (ΠΠΠΠ Π’). ΠΡΠΎΠ±Π° ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ Π±ΡΠ»Π° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½Π° Ρ 88 (28,8%) Π΄Π΅ΡΠ΅ΠΈΜ: Ρ 44 (33,8%) Ρ ΠΠΠΠ£Π Π’ ΠΈ 44 (25,1%) Ρ ΠΠΠΠ Π’. Π Π±ΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²Π΅ ΡΠ»ΡΡΠ°Π΅Π² ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΡ ΠΊΡΠΏΠΈΡΠΎΠ²Π°Π»Π°ΡΡ Π·Π° ΡΡΠ΅Ρ Π°Π½ΡΠ΅ΡΠΎΠ³ΡΠ°Π΄Π½ΠΎΠΈΜ Π±Π»ΠΎΠΊΠ°Π΄Ρ: ΠΠΠΠ Π’ β Π² 65,5%, ΠΠΠΠ£Π Π’ β Π² 92,7% ΡΠ»ΡΡΠ°Π΅Π². ΠΠ΅ΡΠΈ Ρ Π½Π΅ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΈΜ ΠΏΡΠΎΠ±ΠΎΠΈΜ ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ ΠΈΠΌΠ΅Π»ΠΈ Π±ΠΎΠ»Π΅Π΅ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠΈΜ Π°Π½Π°ΠΌΠ½Π΅Π· Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ (Ρ = 0,035), Π±ΠΎΠ»ΡΡΡΡ ΡΠ°ΡΡΠΎΡΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΠΈΠ½ΡΡΠΎΠ²ΠΎΠ³ΠΎ ΡΠΈΡΠΌΠ° ΠΏΠ΅ΡΠ΅Π΄ Π²ΠΎΡΠΏΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈΠ΅ΠΌ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ (Ρ = 0,043) ΠΈ Π±ΠΎΠ»ΡΡΡΡ ΡΠ°ΡΡΠΎΡΡ ΡΠΈΡΠΌΠ° Π²ΠΎ Π²ΡΠ΅ΠΌΡ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ (Ρ = 0,019), Π° ΡΠ°ΠΊΠΆΠ΅ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΈΠΈΜ ΡΡΠΎΠ²Π΅Π½Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΠ΅ΡΠ΅Π· ΠΠ-ΡΠ·Π΅Π» (Ρ = 0,038). ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅: ΠΏΡΠΎΠ±Π° ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ ΠΊΡΠΏΠΈΡΡΠ΅Ρ ΠΏΡΠΈΡΡΡΠΏ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ Π½Π΅ Π±ΠΎΠ»Π΅Π΅ ΡΠ΅ΠΌ Ρ 1/3 Π΄Π΅ΡΠ΅ΠΈΜ Ρ ΠΏΠ°ΡΠΎΠΊΡΠΈΠ·ΠΌΠ°Π»ΡΠ½ΡΠΌΠΈ ΠΠ-ΡΠ΅ΡΠΈΠΏΡΠΎΠΊΠ½ΡΠΌΠΈ ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΡΠΌΠΈ. ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΡΠΎΠ±Ρ Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π°Π½Π°ΠΌΠ½Π΅Π·Π° Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΠ-ΡΠ·Π»ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ. ΠΡΠΎΠ±Π° ΠΠ°Π»ΡΡΠ°Π»ΡΠ²Ρ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½Π° Π² Π½Π°ΡΠ°Π»Π΅ ΠΏΡΠΈΡΡΡΠΏΠ° ΡΠ°Ρ
ΠΈΠΊΠ°ΡΠ΄ΠΈΠΈ ΠΈ Π² Π±ΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²Π΅ ΡΠ»ΡΡΠ°Π΅Π² ΠΊΡΠΏΠΈΡΡΠ΅Ρ Π΅Π³ΠΎ Π·Π° ΡΡΠ΅Ρ Π°Π½ΡΠ΅ΡΠΎΠ³ΡΠ°Π΄Π½ΠΎΠΈΜ Π±Π»ΠΎΠΊΠ°Π΄Ρ ΠΠ-ΡΠ·Π»Π°.
Modeling of complex of catalase Β«ΠΒ» from Saccharomyces Cerevisiae with NADPH for its geometry prediction
NADPH weakly binds to Catalase Β«ΠΒ» from Saccharomyces cerevisiae, so geometry of bound ligand is not known from X-ray crystallography. To resolve this issue com-plexes of catalase Β«ΠΒ» from Saccharomyces cerevisiae with NADPH and it s frag-ments - inorganic momophosphates and 2 ,5 -ADP was modeled with molecular me-chanics methods. Binding site of NADPH 2 -phosphate in KATA was detected and models of 2β,5 -ADP as individual molecule and as fragment of NADPH in complexes with catalase Β«ΠΒ» were proposed. These model data are in good agreement with known experimental results (electron density). Position of nicotinamid-ribosid is not determined.ΠΠ°ΡΠ°Π»Π°Π·Π° Β«ΠΒ» ΠΈΠ· Saccharomyces cerevisiae ΠΎΠ±ΡΠ°Π·ΡΠ΅Ρ ΡΠ»Π°Π±ΡΠΉ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ Ρ ΠΠΠΠ€Π2, ΠΏΠΎΡΡΠΎΠΌΡ Π΅Π³ΠΎ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡ Π² ΡΠ΅Π½Π³Π΅Π½ΠΎΡΡΡΡΠΊΡΡΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
Π½Π΅ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π°. Π¦Π΅Π»Ρ Π½Π°ΡΡΠΎΡΡΠ΅ΠΉ ΡΠ°Π±ΠΎΡΡ - ΠΏΡΠ΅Π΄ΡΠΊΠ°Π·Π°Π½ΠΈΠ΅ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΠΈ ΠΠΠΠ€Π2 ΠΈ Π΅Π³ΠΎ ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠΎΠ² - Π½Π΅ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠΎΠ½ΠΎΡΠΎΡΡΠ°ΡΠΎΠ² ΠΈ 2',5'-ΠΠΠ€ Π² ΡΠ²ΡΠ·Π°Π½Π½ΠΎΠΌ Ρ ΡΠ΅ΡΠΌΠ΅Π½ΡΠΎΠΌ ΡΠΎΡΡΠΎΡΠ½ΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°ΡΡΠ΅ΡΠΎΠ² ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΈ Π½Π°Π΄Π΅ΠΆΠ½ΠΎ Π»ΠΎΠΊΠ°Π»ΠΈΠ·ΠΎΠ²Π°ΡΡ ΡΠ°ΠΉΡ ΡΠ²ΡΠ·ΡΠ²Π°Π½ΠΈΡ 2 -ΡΠΎΡΡΠ°ΡΠ° ΠΠΠΠ€Π2 Π² ΡΡΠΎΠΉ ΠΊΠ°ΡΠ°Π»Π°Π·Π΅, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠΈΡΡ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΡΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ 2',5'-ΠΠΠ€ Π² ΡΠΎΡΠΌΠ΅ ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠΎΠ»Π΅ΠΊΡΠ»Ρ ΠΈ Π² ΡΠΎΡΡΠ°Π²Π΅ ΠΠΠΠ€Π2 Π² ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ΅ Ρ ΠΊΠ°ΡΠ°Π»Π°Π·ΠΎΠΉ Β«ΠΒ», ΡΠΎΠ³Π»Π°ΡΡΡΡΠΈΠ΅ΡΡ Ρ ΠΈΠ·Π²Π΅ΡΡΠ½ΡΠΌΠΈ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠΌΠΈ Π΄Π°Π½Π½ΡΠΌΠΈ ΠΏΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ. ΠΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ Π½ΠΈΠΊΠΎΡΠΈΠ½Π°ΠΌΠΈΠ΄Π½ΠΎΠΉ ΡΠ°ΡΡΠΈ ΠΠΠΠ€Π2 Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π°Π½Π°Π»ΠΈΠ·Π° ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ ΠΎΠΊΠΎΠ½ΡΠ°ΡΠ΅Π»ΡΠ½ΠΎ Π½Π΅ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ
New early Triassic Lingulidae (Brachiopoda) genera and species from South China
Two new genera, Sinolingularia gen. nov. and Sinoglottidia gen. nov., together with three new species, Sinolingularia huananensis gen. et sp. nov., Sinolingularia yini gen. et sp. nov. and Sinoglottidia archboldi gen. et sp. nov., are described on the basis of a large collection of well-preserved specimens from several sections straddling the Permian - Triassic boundary in South China. <br /
Trade with Endogenous Transportation Costs: The Value of LNG Exports
This paper investigates the economic value of trade when prices of transportation services are endogenous to cross-market price spreads. This is relevant for liquefied natural gas (LNG) exports. LNG transportation capacity is limited in the short-run, and long lead-times are involved in extending the transportation infrastructure. We establish empirically that LNG transportation costs have been endogenous to regional gas prices spreads. As such, transportation service providers have been able to capture part of the price spread. We proceed to develop a method to value LNG exports under conditions of endogenous transportation costs and market integration. We use this method to quantify the effect of endogenous transportation costs on the value of LNG exports from the US to Japan. Our analysis shows that when transportation costs are correctly treated as endogenous, the LNG export benefit can drop by as much as 20-50% relative to the case of exogenous cost
Unified -deformation of one-parametric q-deformed oscillator algebras
We define a generalized -deformed oscillator
algebra and study the number of its characteristics. We describe the structure
function of deformation, analyze the classification of irreducible
representations and discuss the asymptotic spectrum behaviour of the
Hamiltonian. For a special choice of the deformation parameters we construct
the deformed oscillator with discrete spectrum of its "quantized coordinate"
operator. We establish its connection with the (generalized) discrete Hermite I
polynomials
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