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Nanomechanical systems necessitate components with unparalleled precision and minimal frictional resistance to achieve optimal performance. Nanobearings represent a critical class of components that facilitate rotational or linear motion at the nanoscale. This paper presents a comprehensive classification of nanobearings, encompassing their structural attributes, materials employed, and operational mechanisms. Additionally, it provides a detailed mathematical formulation that describes the static and dynamic behav...

Water pollution from untreated wastewater discharge is a major public health concern in the ancient city of Bukhara, Uzbekistan. The city lacks adequate wastewater treatment facilities, leading to the release of contaminated water into the environment. This has resulted in the deterioration of water quality in local water bodies, posing serious risks to human health. One of the primary sources of pollution is the discharge of domestic and industrial wastewater into the Shavkat aria canal, which flows through the c...