Nitrogen-containing organic compounds play an essential role in modern organic chemistry due to their wide range of chemical reactivity and biological significance. Among such compounds, N,N'-dimethylaminobenzaldehyde cyanohydrin (DMABDS) represents an interesting molecule containing both a cyanohydrin functional group and an electron-donating dimethylamino substituent. These structural features strongly influence the chemical behavior of the compound and make it a promising intermediate in organic synthesis. Reactions between DMABDS and various amines attract considerable attention because they lead to the formation of new carbon–nitrogen bonds and generate a variety of nitrogen-containing derivatives. The present work discusses the interaction of DMABDS with primary, secondary, and aromatic amines, focusing on the mechanistic aspects of these transformations and the properties of the resulting products. The study also highlights possible applications of these reactions in the synthesis of functional organic compounds with potential relevance to pharmaceutical chemistry and materials science.

Hujayra sitoskeleti eukariot hujayralarning ichki tayanch tizimi bo‘lib, u hujayra shaklini saqlash, mexanik barqarorlikni ta’minlash, organoidlarning joylashuvini boshqarish, hujayra ichki transportini amalga oshirish va hujayra bo‘linishida ishtirok etish kabi ko‘plab muhim biologik vazifalarni bajaradi. Sitoskelet hujayra sitoplazmasida joylashgan murakkab oqsil tolalar tarmog‘idan iborat bo‘lib, asosan mikrofilamentlar, oraliq filamentlar va mikronaychalardan tashkil topadi. Ushbu strukturalarning har biri o‘ziga xos molekulyar tuzilishga, dinamik xossalarga va fiziologik funksiyalarga ega. Mikrofilamentlar ko‘proq aktin oqsilidan tuzilgan bo‘lib, hujayra harakati, qisqarish va membrana shakllanish jarayonlarida faol qatnashadi. Oraliq filamentlar mexanik mustahkamlikni ta’minlaydi hamda to‘qimalarning strukturaviy yaxlitligini saqlaydi. Mikronaychalar esa tubulin oqsilidan tashkil topib, hujayra ichida moddalarning tashilishi, mitoz hushtagi hosil bo‘lishi va kiprikchalar hamda xivchinlar harakatida ishtirok etadi. Sitoskelet tizimi faqat tayanch apparati emas, balki hujayra signalizatsiyasi, differensiallanish, migratsiya, immun javob, regeneratsiya va embrional rivojlanish jarayonlarida ham muhim o‘rin tutadi. Zamonaviy sitologiya va molekulyar biologiyada sitoskelet elementlarining patologik o‘zgarishlari saraton, neyrodegenerativ kasalliklar, mushak distrofiyalari va irsiy sindromlar bilan bog‘liqligi aniqlangan. Mazkur maqolada sitoskeletning strukturaviy komponentlari, ularning ultrastrukturasi, molekulyar tashkil topishi va hujayra hayotidagi funksional ahamiyati keng yoritiladi.

Mazkur maqolada Said Ahmadning “Kelinlar qo‘zg‘oloni” va “Farmonbibi arazladi” komediyalarida frazeologizmlarning lingvopoetik xususiyatlari tahlil qilinadi. Asarlarda qo‘llangan frazeologik birliklarning semantik, stilistik hamda funksional jihatlari aniq misollar asosida o‘rganildi. Tadqiqot natijasida frazeologizmlar qahramon xarakterini ochish, dialoglarni jonlantirish va komik effekt yaratishda muhim vosita ekanligi aniqlandi.

This article scientifically analyzes the pedagogical conditions for increasing the effectiveness of preventive work with juvenile offenders. It also highlights the mechanisms of educational influence, individual approach, cooperation among prevention subjects, and the introduction of modern pedagogical technologies.

Post-stroke cognitive impairment (PSCI) represents one of the most significant complications following an Insult, contributing substantially to long-term disability and reduced quality of life. Cognitive deficits may involve memory, attention, executive function, and language abilities, often persisting even after physical recovery. Despite advances in acute stroke management, the burden of cognitive dysfunction remains underrecognized and undertreated. This study aims to evaluate the effectiveness of structured neurorehabilitation strategies in improving cognitive outcomes among post-stroke patients. A prospective observational cohort design was employed, involving 150 patients diagnosed with ischemic or hemorrhagic stroke. Cognitive function was assessed using standardized neuropsychological tools, and individualized rehabilitation programs were implemented over a six-month period. Preliminary findings suggest that targeted cognitive rehabilitation, combined with physical therapy and psychosocial support, significantly improves cognitive performance and functional independence. These results highlight the importance of early identification and personalized intervention in managing PSCI.