Таджикистан – Энциклопедия на таджикском языке КИТОБАМ

POLYaRIZATSIYaI RUShNOI, yake az khosiyathoi umdai afkanishoti optiki (rushnoi)-ro guyand, ki az nobarobarqimatii samthoi gunogun dar hamvorii ba samti iur (samti pahnshavii mavji rushnoi) amudi iborat ast. Polyarizatsiyai rushnoi gufta inchunin kharakteristikahoi geometriero niz menomand, ki makhsusiyathoi in nobarobarqimatiro inikos mekunand. Sarfi nazar az on ki hodisahoi bo Polyarizatsiyai rushnoi …

POLIELEKTROLITHO,  elektrolithoi polimeri, polimerhoe, kn dar mahlulho ba ionho judo (dissotsiatsiya) shuda metavonand. Polielektrolitho ba kislotahoi polimeri (masalan, kislotahoi poliakrilat), asoshoi polimeri (polivinilpiridiniy) va poliamfol i t h o (sopolimerhoe, ki dar tarkibashon ham guruhhoi asosi va ham guruhhoi kislotagi dorand) taqsim meshavand. Muhimtarin biopolimerho — safedaho va kislotahoi nukleat …

POLIBUTADIENHO [—SN2—SN=  SN—SN2—], yak nav polimerhoi sipteziand; mahsuloti polimerizatsiyai butadien. Bo ingredienthoi khoka va moe omekhta, bo kauchukhoi tabii va sintezi payvast, dar benzol va galogenhosilayu alkilhosilahoi on, galogenhosilai karbogidridhoi alifati hal meshavand. Polibutadienho vobasta ba tarzi polimerizatsiya yo sharoiti reaksiya (navi initsiator yo katalizatori istifodashavanda, harorati reaksiya va gayra) …

POLIKARPOV Nikolay Nikolaevich (8. 7. 1892, slobodai Georgievskaya, hozira rayoni Linini viloyati Orël—30. 7. 1944, Moskva), aviakonstruktori soveti, Qahramoni Mehnati Sotsialisti (1940). Badi khatmi Instituti politekhnikii Petrograd va kurshoi aviatsiya va havopaymoii nazdi in institut (1916) dar zavodi Rusu Baltika (Petrograd) kor karda, dar kori sokhtmoni samolyoti «Ilya Muromets» ishtirok …

POLLINOZHO, bemorihoi allergiero guyand, ki dar natijai gardi guli rastanihoro nafas kashidan paydo meshavand.