23 research outputs found
Lightweight Energy Absorbers for Blast Containers
Kinetic-energy-absorbing liners made of aluminum foam have been developed to replace solid lead liners in blast containers on the aft skirt of the solid rocket booster of the space shuttle. The blast containers are used to safely trap the debris from small explosions that are initiated at liftoff to sever frangible nuts on hold-down studs that secure the spacecraft to a mobile launch platform until liftoff
(2, 2, 8, 8-Tetramethyl-5-oxa-4,6-diphospha-3, 6-nonadien)tetrakis[dicarbonyl-(methylcyclopentadienyl)mangan], der erste komplexierte Bis(phosphavinyl)ether
Der Komplex eines neuartigen Liganden ist die Titelverbindung 1. Sie entsteht aus [(CH3C5H4)Mn(CO)2Β·thf] und (CH3)3C-C=P vermutlich unter H2O-Aufnahme. Im paramagnetischen Komplex 1 fungiert der Bis(phosphavinyl)ether als 8-Elektronendonor gegenΓΌber den vier (CH3C5H4)Mn(CO)2-Einheiten
ΠΡΠΎ ΠΌΠ°Π»ΠΎΠ²ΡΠ΄ΠΎΠΌΡ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ½Ρ ΡΠ°Π±Π»ΠΈΡΡ Π―ΠΊΠΎΠ²Π° ΠΠΈΠ»ΠΈΠΏΠ° ΠΡΠ»ΠΈΠΊΠ°
Π£ ΡΡΠ°ΡΡΡ ΠΎΠΏΠΈΡΠ°Π½ΠΎ ΠΌΠ°Π»ΠΎΠ²ΡΠ΄ΠΎΠΌΡ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ½Ρ ΡΠ°Π±Π»ΠΈΡΡ ΠΏΡΠΎΡΠ΅ΡΠΎΡΠ° ΠΡΠ°ΠΆΡΡΠΊΠΎΠ³ΠΎ ΡΠ½ΡΠ²Π΅ΡΡΠΈΡΠ΅ΡΡ Π―ΠΊΠΎΠ²Π° ΠΠΈΠ»ΠΈΠΏΠ° ΠΡΠ»ΠΈΠΊΠ°. ΠΠΈΠΊΠΎΠ½Π°Π½ΠΎ ΠΊΠΎΡΠΎΡΠΊΠΈΠΉ Π°Π½Π°Π»ΡΠ· ΡΠΊΠ»Π°Π΄Ρ ΡΠ° ΡΡΡΡΠΊΡΡΡΠΈ ΡΠ°Π±Π»ΠΈΡΡ, ΡΠΎ Π½Π΅ ΡΡΠ»ΡΠΊΠΈ ΡΠΈΡΠΎΠΊΠΎ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈΡΡ Π² Π°ΡΠΈΡΠΌΠ΅ΡΠΈΡΡ, Π°Π»Π³Π΅Π±ΡΡ, ΡΠ΅ΠΎΡΡΡ ΡΠΈΡΠ΅Π» Ρ Π² ΡΠ΅ΠΎΡΡΡ Π°Π»Π³Π΅Π±ΡΠ°ΡΡΠ½ΠΈΡ
ΡΡΠ²Π½ΡΠ½Ρ, Π°Π»Π΅ ΠΉ ΠΌΠ°Π»ΠΈ ΡΠΈΡΠΎΠΊΠ΅ ΠΏΡΠ°ΠΊΡΠΈΡΠ½Π΅ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ.Π ΡΡΠ°ΡΡΠ΅ ΠΎΠΏΠΈΡΠ°Π½Ρ ΠΌΠ°Π»ΠΎΠΈΠ·Π²Π΅ΡΡΠ½ΡΠ΅ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ°Π±Π»ΠΈΡΡ ΠΏΡΠΎΡΠ΅ΡΡΠΎΡΠ° ΠΡΠ°ΠΆΡΠΊΠΎΠ³ΠΎ ΡΠ½ΠΈΠ²Π΅ΡΡΠΈΡΠ΅ΡΠ° Π―ΠΊΠΎΠ²Π° Π€ΠΈΠ»ΠΈΠΏΠΏΠ° ΠΡΠ»ΠΈΠΊΠ°. ΠΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ ΠΊΠΎΡΠΎΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΠΈ ΡΡΡΡΠΊΡΡΡΡ ΡΠ°Π±Π»ΠΈΡ, ΠΊΠΎΡΠΎΡΡΠ΅ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ ΡΠΈΡΠΎΠΊΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈΡΡ Π² Π°ΡΠΈΡΠΌΠ΅ΡΠΈΠΊΠ΅, Π°Π»Π³Π΅Π±ΡΠ΅, ΡΠ΅ΠΎΡΠΈΠΈ ΡΠΈΡΠ΅Π» ΠΈ Π² ΡΠ΅ΠΎΡΠΈΠΈ Π°Π»Π³Π΅Π±ΡΠ°ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ, Π½ΠΎ ΠΈ ΠΈΠΌΠ΅Π»ΠΈ ΡΠΈΡΠΎΠΊΠΎΠ΅ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅.The unknown mathematical tables by Jakob Pilip Kulik β the professor of Prague University, are described in this article. The analysis of the content and structure of tables was conducted, they were not only used widely in arithmetic, algebra, the theory of numbers and in the Theory of equalizations of algebra, but They had a wide practical application