This article covers the process of developing strength qualities in 14-15-year-old judokas, its scientific foundations, and practical methods. The influence of physiological changes in adolescence on sports training, methods of strength development used in training, and their effectiveness were scientifically analyzed. The results of experiments on the influence of a set of special exercises, plummetric exercises, paired judo exercises, and strength exercises performed in one's own weight are presented. According to the research results, the age of 14-15 is the most optimal period for the formation of strength qualities in judokas, and correctly chosen training technologies lead to a stable increase in sports results.
This study investigates the biogeochemical composition of the atmosphere in the southern regions of Uzbekistan (Surkhondarya and Kashkadarya regions). The research identifies the natural and anthropogenic sources of air pollutants, characterises the physicochemical composition of dust–aerosol particles (PM₂.₅ and PM₁₀), and demonstrates their significance within an integrated environmental monitoring system. Seasonal sampling campaigns were conducted at five monitoring sites from 2023 to 2024. Atomic absorption spectrometry (AAS) and inductively coupled plasma–optical emission spectrometry (ICP-OES) were employed to quantify heavy metal concentrations, while ion chromatography determined major anion and cation profiles. Biogeochemical indices (Igeo, PI, ERI) were computed for each site, and spatial distribution was mapped using GIS. Results indicate that PM₂.₅ and PM₁₀ concentrations exceed WHO guideline values by 3–7-fold during summer, with heavy metals Fe, Mn, Pb, Zn, and Cu showing marked seasonal peaks. Source apportionment attributes 52% of PM₁₀ to soil erosion and dust storms, 21% to industrial emissions, and 14% to transport. Ecological risk assessment classified two sites in Surkhondarya Valley as 'moderately hazardous' and one as 'highly hazardous'. Integration of biogeochemical analysis into routine monitoring is scientifically substantiated and recommended.
O‘zbekiston iqtisodiyotida oziq-ovqat sohasini rivojlantirishda qishloq xo‘jaligining tutgan o‘rni va strategik ahamiyati tahlil qilinadi. Qishloq xo‘jaligi mamlakat yalpi ichki mahsulotining muhim tarkibiy qismi bo‘lib, aholini sifatli va xavfsiz oziq-ovqat mahsulotlari bilan ta’minlash, eksport salohiyatini oshirish hamda oziq-ovqat xavfsizligini mustahkamlashda asosiy omil hisoblanadi. Maqolada agrar sohada amalga oshirilayotgan islohotlar, klaster tizimi, zamonaviy agrotexnologiyalar va innovatsion logistika yechimlarining oziq-ovqat ishlab chiqarish hajmi hamda samaradorligiga ta’siri yoritib beriladi. Shuningdek, qishloq xo‘jaligida resurslardan samarali foydalanish, qo‘shilgan qiymat zanjirini rivojlantirish va qayta ishlash sanoatini kengaytirish orqali ichki bozor barqarorligini ta’minlash masalalariga alohida e’tibor qaratiladi. Tadqiqot natijalari shuni ko‘rsatadiki, qishloq xo‘jaligini modernizatsiya qilish, raqamlashtirish va eksportga yo‘naltirilgan ishlab chiqarishni qo‘llab-quvvatlash oziq-ovqat tarmog‘ini barqaror rivojlantirishning muhim sharti hisoblanadi hamda sohani yanada rivojlantirish bo‘yicha taklif va amaliy tavsiyalar ishlab chiqilgan.
Mazkur maqolada muammoli ta’lim texnologiyasining o‘quvchilarda mustaqil fikrlash ko‘nikmalarini shakllantirishdagi o‘rni tahlil qilinadi. Tadqiqot jarayonida eksperimental va nazorat guruhlari bilan ishlanib, muammoli ta’lim metodlarining samaradorligi aniqlangan. Natijalar muammoli vaziyatlarga asoslangan ta’lim modeli o‘quvchilarning tahliliy, tanqidiy va ijodiy fikrlash darajasini sezilarli oshirishini ko‘rsatdi.