This study investigates the utilization of nano-composite hydrogels for the removal of methyl violet from aqueous solutions, leveraging a Fenton-like reaction mechanism. The nano-composite hydrogel demonstrated exceptional efficiency in dye removal, attributed to the synergistic effects of the hydrogel matrix and the catalytic activity of embedded nano-particles. This process generates hydroxyl radicals under mild conditions, leading to the effective breakdown of various industrial dyes. The kinetics of dye removal, the reusability of the nano-composite, and the influence of operational parameters such as different amounts of nano-composite, pH, , temperature, and dye concentration were systematically explored. The findings underscore the potential of nano-composite hydrogel as a promising, environmentally friendly solution for wastewater treatment and dye removal.

Ushbu maqolada fazoviy tasvirlarni tahlil qilish asosida inson yuzini aniqlash muammosi ko‘rib chiqiladi. Yuzni aniqlash — kompyuter ko‘rish (Computer Vision) va biometrik identifikatsiya sohalarining dolzarb yo‘nalishlaridan biri hisoblanadi. Ayniqsa, raqamli tasvirlarni chastota sohasida ifodalash orqali ularning asosiy xususiyatlarini ajratib olish va tahlil qilish, sun’iy intellektga asoslangan tizimlar uchun katta ahamiyatga ega. Fourier o‘zgarishlari raqamli tasvirlarni fazodan chastotaga o‘tkazishga imkon beradi, bu esa yuzni aniqlash vazifasini ancha soddalashtiradi. Maqolada DFT (Diskret Fourier o‘zgarishi) va uning ikki o‘lchamli (2D) ko‘rinishlari, tasvirni tahlil qilishda foydalaniladigan algoritmlar, tajriba natijalari, grafik tahlillar, sun’iy neyron tarmoqlari bilan integratsiya holatlari keng yoritilgan.

Mazkur maqolada siyosiy ijtimoiylashuv jarayonida an’analar va innovatsiyalarning o‘zaro aloqadorligi tahlil qilinadi. Jamiyatda shakllangan qadriyatlar va zamonaviy texnologiyalarning uyg‘unlashuvi yosh avlodning siyosiy ongini shakllantirishda qanday rol o‘ynashi haqida fikr yuritiladi. Muallif hayotiy misollar va insoniy qarashlar orqali ushbu jarayonning mohiyatini ochib berishga harakat qiladi.

Language acquisition is a fundamental aspect of human development and has been the subject of extensive study across multiple disciplines, including linguistics, cognitive science, psychology, and education. Understanding how individuals acquire language, whether their first language (L1) or a second/foreign language (L2), is crucial for the development of effective teaching methodologies and learning environments. This paper provides an in-depth examination of the primary theories that attempt to explain the process of language acquisition. The Behaviorist Theory, pioneered by B.F. Skinner, emphasizes imitation, reinforcement, and habit formation. In contrast, the Nativist Theory, led by Noam Chomsky, argues for an innate, biological capacity for language learning, proposing the existence of a “language acquisition device” (LAD). The Cognitive Theory, influenced by Jean Piaget, highlights the role of mental processes and developmental stages in language learning, while the Social Interactionist Theory, associated with Lev Vygotsky, stresses the importance of social context and interaction in the acquisition of language.

In our study, we examined white laboratory rats born from control and experimental mothers with hypothyroidism. As a result of morphological analysis of the pancreas in different periods of postnatal ontogenesis, significant changes in the delay in the development and formation of individual components of the vascular wall were revealed compared to the control group. From the first days after the start of the experiment, changes in the arterial wall were noted in all experimental animals. The results show that morphological changes in the cells of the pancreas and its blood vessels occur in the offspring born from mothers with hypothyroidism.