Nitrofoska, nurin mineralii murakkabi nitrogen, fosfor va kaliydor. 35—52% N, PjO| va K20 do­rad. Bo rohi bo omekhtai kislotai nitratu fosfat (dar omekhtagii am­miak va khloridi kaliy) vayron kardani appatit yo fosforit hosil mekunand. Nitrofoska az presipitat, ammo­fos va selitrai ammiaki iborat bu­da, hamchun nurii asosi baroi hama guna ziroat …

Nikotin (fransavi nicotine, az nomi diplomati fransavi J. Niko (J. Nicot), ki soli 1560 avvalii marotiba tamokuro ba Fransiya ovardaast, alkaloid, 1-metil-2- (3-piridil) -pirrolidin, C|0Hi4N2. Moei berang, bui makhsus dorad, t jushish 247° Selsiya, dar havo rangi jigari megirad; dar ob va halkunandahoi organiki nagz hal meshavad; khosiyati asosi dorad. …

Nistabati du adad, hosili taqsimest, ki dar natijai taqsim kardani adadi yakum ba adadi duyum hosil meshavad. Nisbati du buzurgii yakjinsa adadero memonad, ki hangomi buzurgii duyumro chun vohidi chenkuni qabul karda chen namudani buzurgii yakum hosil shudaast. Agar du buzurgi tavassuti yak vohidi chenkuni chen shuda boshand, Nisbati onho …

Nitropayvastho, payvasthoi organikie, ki dar molekulaashon yak yo yakchand nitroguruhi (—NOj) bo atomhoi karbon payvast dorand. Mo­no-, di- tri- va polinitropayvasthoro farq mekunand. Nitropayvastho alifati (nitroparafinho va nitroolefinho), aromati (nitroanilinho, nit­robenzol, nitrotoluol, nitronafta­lin va gayra), aromatiyu alifati (dar zanjiri alifatii pahluiashon nitroguruh dorand, masalan, fenilnitrometan SvNvSNgMOg, nitrostirol S*N*— —CH=CHNOj va …

Nil (ba zaboni misroyoni hozira lotini Nilus, yun. Neilos), daryoest dar Afrika. Tulash 6671 kilometr. Masohati havzaash 2870 dva. kilometr2. Havzan Nil territoriyai davlathoi Ruanda, Keniya, Tan­zaniya, Uganda, Efiopiya, Sudon va Misrro purra yo qisman faro girif- taast. Daryo ae pahnkuhi Afrikai Sharqi bo nomi Rukarara ogoz yofta, bad az …

Niso shahri qadim va asrimiyonagi (dimnai on holo dar masofai 18 kilometr Shimoli Garbi shahri Ashqobod voqe ast). Dar asri 3 to milodi— asri 3 milodi Niso az Shahriston (dimnai Nisoi Nav, taqriban 18 ga) va qarorgohi mustahkami shohi Port (dimnai Hisoi Kuhan, nomi qadimiash Mehrdodkart, taqriban 14 ga) iborat …

Nitrofos, nitrofosfat, nurii murakkabi mineralii nitrogenu fosfordor. Ba hisobi miyona 38% N va Ra ob dorad. Bo rohi bo omekhtai kislotahoi nitratu sulfat yo nitratu fosfat vayron namudani apatit yo fosforit va muntazam ammononii moddahoi ba reaksiya dokhilshavanda hosil menamoyaod. Nitrofos az presipitat, omekhtai selitrai am­miakiyu gips yo presipitat, ammofos …

Nisorii Tuni (soli tavallud nomalum — vafot 1560, Tun), shoiri fors-tojik. Az Gunobodi Khuroson. Dar hamon jo khatu savod barovarda, baroi tahsil ba shahri Tun raft va to okhiri hayot on jo mond. Dar ilmi nujum va hayat mahorati tom doshtaast. Beshtar ruboi, qita, muammo va masnavi gufta, dar sarchashmahoi …

Nitroefirho, efirhoi murak­kabi kislotai nitratu spirtho, ki dar molekulaashon yak yo yakchand guruhi nitrati (—ON02) bo atomi karbon payvast shuda dorand. Masalan, alkilnitratho, nitrati spirthoi duatoma, nitrathoi gliserin, nitra­ti sellyuloza va gayra.  Nitroefirho vobasta ba shumorai guruhhoi nitratii tarkibashon ba mono-, di- va polinitroefirho chudo meshavand. Nitroefirhoro dar sanoat bo …

Nisori (takhallus, nomash Bahouddpn Khojahasan yo Hasankhoja; 1516, Bukhoro —1597, hamon jo), shoir va olimi tojik. Az oilai Sayid Podshodkhojai adib. Nisori dar oila sa­vod barovarda, dar muhiti ilmiyu adabii Bukhoro ba kamol rasidaast. Chand muddat dar Balkh, Qazvin, Mashhad, Hirot va digar shahrhoi Osi­yoi Miyonayu Khuroson tahsil karda, aksar …