In the paper, the importance of the Narpay canal in the economy, changes in the quality of groundwater in its basin, pollution of groundwater due to anthropogenic influence, and the hydrochemical regime of groundwater in the basin of the Narpay canal are studied.
| Mualliflar | J K Fayzullaev |
|---|---|
| Jurnal | Samarqand davlat universiteti ilmiy tadqiqotlar axborotnomasi |
| Nashr sanasi | 2022-06-10 |
| Jild | 5 |
| Son | 135/2 |
| Betlar | 1-10 |
| Til | en |
| DOI | 10.59251/2181-1296.v5.1352.1172 |
DOI: 10.59251/2181-1296.v5.1352.1172 · Maqolaning asl sahifasi · PDF
Ushbu maqolada o‘zgaruvchan zichlikga ega nodivergent cross-diffuzion tenglamalar sistemasining sifat xossalarini o‘rganilgan. Global va asimptotik yechimlar haqida teoremalar isbotlangan hamda ulardan kelib chiqadigan…
Benzaldegid va uning molekulasida turli hil o‘rinbosarlar saqlagan hosilalarini element organik birikmalar asosida tayyorlangan katalizatorlar yordamida fenilatsetilen ishtirokida katalitik etinillash reaksiyasi orqali…
Cu2+ va Ni2+ kationlarining 1,3,5-tris-(betta oksietil) geksagidro-s-triazin bilan hosil qilgan komplekslarining strukturaviy barqarorligi, molekulada elektron zichlik taqsimoti orqali reaksion markazlarning holati…
Maqolada Ziaddin-Zirabuloq togʻlari lixenoflorasida tarqalgan epigey lishayniklar tahlili keltirilgan. Olib borilgan tadqiqotlar natijasida lixenofloradan 6 turga mansub epigey lishayniklar (Thalloidima sedifolia, T…
Nurota tog‘-kon sanoati Respublikamizning rangli metallurgiya hamda kamyob yer metallari qazib olish sanoati uchun eng istiqbolli hududlardan biri hisoblanadi. XX asrning ikkinchi yarmida Qo‘ytoshda molibden va…
Ushbu maqolada ta’lim jarayonining sifatini belgilovchi asosiy xususiyatlar kо‘rsatib berilgan hamda oliy о‘quv yurtidagi sifat tizimi tushunchasining asosini ifodalovchi qoidalar keltirilgan. Muallif tomonidan ta’limni…
Two series of the novel an aryl(heteryl)idene containing pyrazolo[3,4-d]pyrimidin-4-one targets (5a-o and 6a−o) were performed applying by the condensation of tricyclic pyrazolo[3,4-d]pyrimidin-4-ones (3 and 4) with the…
We study a two-particle discrete Schrödinger operator associated with a system of three particles moving on the three-dimensional cubic lattice depending on the interaction magnitude and particles mass ratio . We…
Экспериментально измерено удельное электросопротивление, коэффициент Холла и термо-электродвижущая сила аморфных сплавов на основе Ti и Cu с 5 % добавками магнитных металлов Ni, Fe и Co в интервале температур 77-1000К…
Various five and six-membered analogs of deoxyvasicinone alkaloid was synthesized and systematically studied. Tricyclic pyrimidine derivatives were obtained via one step in good yields. Some compounds exhibited moderate…
Samarqand davlat universiteti ilmiy tadqiqotlar axborotnomasi — barcha maqolalar