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Qarshi davlat texnika universiteti (QarDTU) ilmiy repozitoriysi — universitetning professor-o'qituvchilari va talabalari tomonidan yaratilgan ilmiy ishlar, maqolalar, dissertatsiyalar va konferensiya materiallarini jamlagan ochiq elektron kutubxona.

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    QARSHI DAVLAT TEXNIKA UNIVERSITETI “YANGI O‘ZBEKISTON TARAQQIYOTIDA YOSH OLIMLARNING O‘RNI” MAVZUSIDAGI IQTIDORLI TALABALAR, MAGISTRLAR VA YOSH OLIMLAR HAMDA DOKTORANTLARNING ILMIY-AMALIY ANJUMANI
    (QARSHI DAVLAT TEXNIKA UNIVERSITETI “YANGI O‘ZBEKISTON TARAQQIYOTIDA YOSH OLIMLARNING O‘RNI” MAVZUSIDAGI IQTIDORLI TALABALAR, MAGISTRLAR VA YOSH OLIMLAR HAMDA DOKTORANTLARNING ILMIY-AMALIY ANJUMANI, 2026-07-12) Шодиева М.С.
    Расплав дефолианта хлората магния без добавки ПАВ и влаги кристаллизуется в течение 15 секунд при 13-180С. Введение в расплав дефолианта 1% ПАВ увеличивает продолжительность затвердевания расплава дефолианта на 1,5 секунды. Повышение количества добавки ПАВ в дефолианте до 3% затягивает процесс полного затвердевания расплава на 9,3 секунды.
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    QARSHI DAVLAT TEXNIKA UNIVERSITETI “YANGI O‘ZBEKISTON TARAQQIYOTIDA YOSH OLIMLARNING O‘RNI” MAVZUSIDAGI IQTIDORLI TALABALAR, MAGISTRLAR VA YOSH OLIMLAR HAMDA DOKTORANTLARNING ILMIY-AMALIY ANJUMANI
    (2026-06-12) Шодиева М.С.
    В настоящее время в хлопководстве Узбекистана и в других Республиках в качестве дефолианта широко применяются хлораты щелочных и щелочноземельных металлов, фосфорорганические препараты, «Супер ХМДж.», «УзДЕФ», «УзДЕФ-И» и «УзДЕФ-К» и др. [3-5]. Поэтому представляет интерес получение этих дефолиантов на основе местного сырья. Как известно, в большом количестве хлората натрия образуется при реакции диспропорции гипохлорита натрия.
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    ASSESSMENT OF THE EFFECT OF IRRIGATION METHODS ON THE GROWTH AND DEVELOPMENT OF RYE CROPS
    (Modern American Journal of Biological and Environmental Sciences, 2026-05-05) Vafoyeva Mavluda Bobomurodovna; Ro‘ziqulov Jahongir Orziqulovich; Yodgorova Gulnora Isroil qizi
    This article presents information on the impact of irrigation in the care of rye crops using traditional and modern resource-saving irrigation technologies on the vegetation period, as well as on plant height during the growth and development of rye. Scientific research was conducted in 2023-2025 in the conditions of light gray soils of the Karshi district. The rye varieties Shalola, Vakhshskaya-116 and Ns Savo were used as the objects of the experiment.
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    KUZGI BUG‘DOY YETISHTIRISHDA SUVTEJAMKORTEXNOLOGIYALARNI QO‘LLASH SAMARADORLIGI
    (XALQARO ILMIY-ILMIY-TEXNIK KONFERENSIYA TO‘PLAMI, 2026-03-12) Avlakulova Moxigul Meylievna
    Maqolada kuzgi bug‘doyning Qashqadaryo viloyati sharoiti uchun rayonlashtirilgan ”Turon” navini yetishtirishda yomg‘irlatib sug‘orish usulini qo‘llash bo‘yicha o‘tkazilayotgan dala tajribalarining dastlabki natijalari keltirilgan. Ma’lumki respublikamizda oziq-ovqat xavfsizligini ta’minlash, aholiningdonmahsulotlariga bo‘lgan talabini qondirish maqsadida keng miqyosdagi sug‘oriladigan maydonlarda don ekinlari, jumladan kuzgi bug‘doy navlari yetishtirib kelinadi. Keyingi yillarda suv resurslaridan foydalanish imkoniyatining qisqarib borishi natijasida bug‘doyni sug‘orishning an’anaviy usulida suvdan foydalanish samaradorligi kamligi tufayli oshiqcha suv isrofgarchiligigayo‘l qo‘yilmoqda. Shu munosabat bilan ushbu maqola g‘allani sug‘orishda tejamkor hisoblangan yomg‘irlatib sug‘orish usulidan foydalanish bo‘yicha olib borilayotgan dala tadqiqotlari asosida yozilgan.
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    Water shock when starting pumps in automated pumping stations
    (AIP conference proceedings, 2025-07-15) Sobir Jonkobilov; Bektemir Jonkobilov, Shohruh Bahodirov, Jahongir Ruzikulov, Murodilla Ulugmuradov
    The article is devoted to the study of water hammer when starting pumps in automated pumping stations with low inertia of moving masses and taking into account pressure losses when filling the elastic capacity of the pipeline. The article provides an analysis of scientific works devoted to the determination of shock pressure during the startup of pumping stations. The article presents an analytical study of shock pressure during the startup of automated pumping stations, which provides an accurate assessment of the optimal parameters of pumping units and pressure systems. The article obtained dependence for calculating the shock pressure when starting up automated pumping stations, taking into account energy loss along the length of the pipeline; it increases the reliability of the pressure system and ensures resource saving when designing pressure-hydraulic systems. A graphic-analytical method is proposed to determine the shock pressure during a hydraulic shock when starting a pump with an open valve installed at the beginning of the pressure pipeline. The results of theoretical studies are compared with experimental data on shock pressures when starting the main pumps of pumping stations. At the same time, a reliable agreement was obtained between the results of calculations of pressure pipelines based on the proposed dependence on water hammer and experimental data.