Olefinho, alkenho, qatori gomologii karbogidridhoi noseri (formulai umumiashon Sp N2p) zanjirashon kushod, ki yak bandi duchandai karbon-karbon dorand. Olefinho ba payvasthoi asikli mansuband. Uzvi avvalini Olefinho etilen SN2=SN2 ast. Binobar in onhoro karbogidridhoi etileni niz menomand. Etilen va gomologhoi nazdiki on (propilen SNz = SN—SNz, butenho CJla, amplenho S5N10 va …

Olimov Mirzorahmat (1891, Khu­jand, Leninobodi hozira — 15. 6. 1971, Dushanbe), naqqoshi tojik. Rassomi Khalqii Respublikai Sovetii Sotsialistii  Tojikiston  (1959). Azoi KPSS az soli 1969. Yake az muborizon va barpokunandagoni faoli Hokimiyati Soveti dar Tojikiston. Dar oilai naqqosh Mirzoolim Nosirov tavallud yoftaast. Sanati naqqoshiro avval az padar va badtar az …

Oktyabristho, «Ittifo qi 17 o k t ya b r », partiyai kontrrevolyu- tsionii pomeshikoni kalon va bur­juaziyai tijoratiyu sanoati dar Rossiya, qanoti rosta liberalizmi Rossiya. Partiyam Oktyabristho badi nashri Manifest 17 oktyabri 1905 (nomash az hamin jost), avvalhoi noyabri 1905 avval dar Moskva, bad dar Peter­burg ba vudud omada, …

Olekma, daryoest dar viloyathoi Chita, Amur va RASS Equtistoni RSFSR, shokhobi rosti daryoi Lena. Sarobash dar nishebihoi shimoli qatorkuhi Muroy (Olyokminskiy Stanovik). Avval ba Shimoli Sharq va bad ba Shimoli Garb jori shuda, dar nazdikii shahri Olyokminsk ba daryoi Lena hamroh meshavad. Tulash 1436 kilometr, masohati havzaash 210 hazor kilometr2. …

Olimpiada (yunoni olympias), 1) musobiqahoest, ki dar shahri Olimpiyai Yunoni Qadim dar dar 4 sol guzaronida meshudand (nigared Bozihoi olim­pi). Hisobi vaqtro muarrikh Time muayyan kardaast. Soli 776 to milod soli nakhustini Olimpmada hisob meyobad. 2) Dar harakati olimpii hozirazamon dar davomi 4 sol guzaronidani musobaqae, ki dar soli yakumi …

Oktyabr, piryakhi sershokhai vodigiest dar Pomiri Sharqi (rayoni Mur- gobi Viloyati Avtonomii BadakhshoniKuhi). Dar nishebii janubii qatokuhi Pasi Oloy va nishebii sharqii qatorkuhi Zulumart voqe ast. Tulash 19 kilometr, masohat umumiash 32 kilometr2. Nuqtai balandtarinash 6780 metr, past- tarinash— 4440 metr. Khatti barf dar balandii 5200 metr mushohida meshavad. Az …

Oli Xujand, Khonadoni khujandiyon, sulolaest, ki az solhoi 70 asri 11 to okhiri asri 12 riyosati mazhabi shofeiya, badtar khukumati viloyati Isfahonro dar ikhtiyor dosht. Nufuz va maqomi khonadoni Khujandiyonro qayd karda, shoiron va muarrikhonu tazkiranavison onhoro fozilu ilmdust va marifatparvar ba qalam dodaand. Ba Oli Xujand Abubakr Muhammad ibni …

Olimpiya (Olympia), shahri qadimi yunoni dar Elida (qismi shimoli garbii Peloponnes), markazi din, parastishgohi Zevs va joi guzaroni­dani Bozihoi olimpi; muhimtarin markazi sanati Yunoni Qadim. An­sambli memorii Olimpiya asosan asrhoi 7—4 to milod tashakkul yoftaast. Olimpiya ba­di galabai masehiyat ru ba tanaazul nihod, soli 426 boshad, bo farmoni imperatorya Rim …

Oktyabr, posyolkai tipi shahri, markazi rayoni  Kommunistii viloyati Qurgonteppa. Dar sari rokhi moshingardi Vakhsh — Qurgonteppa voqe ast. Az Oktyabr to nazdiktarin stansiyai rohi ohan— Qurgopteppa 16 kilolmetr. Aholiash 4600 nafar (1981), asosan tojikon, inchunin uzbekho, rusho va gayra. Maktabi miyona, khonai madaniyat, kinoteatr, kitobkhona, 2 bogchai bachagon, shubai aloqa, …

Olivin (az lotini oliva — zaytun) p e r i dot, zabarjad, minerali asosi az guruhi Olivin. Tarkibi khimiyaviash (Mg, FejiSiOJ. 8—12%, bazan to 20% FeO va 45—50% MgO dorad. Sistemai kristallbandiash rombi. Dar shakli agregathoi donador va kristallhoi takhtachayu prizmamonand vomekhurad. Rangash bunafshi baland, sabzi zardtob, bazan berang. Sakhtiash …