Hozirgi vaqtda polimer chiqindilar ko’payib atrof muhitga katta zarar keltiryapti. Shuning uchun ularni kamaytirish ularning o’rniga tabiiy polimerlar olish dolzarb hisoblanadi. Bunday tabiiy polimerlar turli xil agressiv muhitda parchalanib ketadi. Bunday bioparchalanuvchi polimerlar an’anaviy polimerlarga qaraganda ancha qimmatroqdir. Arzonroq bioparchalanuvchi polimerlar olish uchun polimer kompozitlardan foydalanish bilan bog’liq bo’ladi.

Surxon vohasida esa Sherobod, Denov, Boysun, Sarijo’y va Yurchi kabi bekliklar bo’lgan va bular turli davrlarda tashkil etilib yugatilib turilgan. Ushbu maqolada esa Surxon vohasining shimoliy qismida joylashgan bekliklarni tadqiq qilamiz.

This article explores the pathophysiological mechanisms underlying the development of hypertension, with a special emphasis on the hormonal factors that contribute to elevated blood pressure. Hypertension, one of the most prevalent cardiovascular disorders worldwide, results from a complex interplay between genetic predisposition, environmental influences, and dysregulation of multiple physiological systems. The article discusses how alterations in renal function, vascular resistance, and sympathetic nervous system activity lead to chronic elevation of arterial pressure. Particular attention is given to the renin-angiotensin-aldosterone system (RAAS), vasopressin, and other endocrine factors such as catecholamines and natriuretic peptides. The review also highlights the feedback loops and receptor sensitivities that sustain hypertensive states over time. Understanding these hormonal contributions is essential for identifying therapeutic targets and improving the management of hypertensive patients. Overall, the paper aims to provide a comprehensive view of how hormonal imbalance acts as a key driver in the pathogenesis of hypertension.

Mazkur maqolada sport tadbirlarida marketing strategiyalarining tutgan o‘rni, ularning qo‘llanilish shakllari va samaradorlik darajasi har tomonlama tahlil qilinadi. Sport sohasi zamonaviy jamiyatda nafaqat sog‘lom turmush tarzini targ‘ib qiluvchi ijtimoiy institut, balki katta iqtisodiy salohiyatga ega bo‘lgan tarmoq sifatida ham maydonga chiqmoqda. Xususan, yirik sport tadbirlarining muvaffaqiyatli tashkil etilishi ularning marketing jihatdan to‘g‘ri rejalashtirilganligiga bog‘liq. Maqolada sport marketingining asosiy strategiyalari — brending, raqamli marketing, homiylik aloqalari, auditoriya bilan ishlash va tomoshabinlar tajribasini boshqarish kabi yo‘nalishlar alohida ko‘rib chiqiladi.

Matematika fanini o‘qitishning dolzarb muammolari haqida.