Publications by authors named "Azmatullah Khan"

Background: Black garlic, also known as fermented garlic, is a useful food that may have therapeutic benefits. The aim of this study was to analyze the impact of fermented garlic and orlistat therapy on obese rats.

Methods: A total of 40 male albino rats (245-250 g) were fed either an HFD ( = 32) or a normal diet ( = 8) for 6 weeks; therefore we randomly assigned the rats into: group I (normal diet), group II (HFD), groups III and IV (HFD with fermented garlic), and group V (orlistat for) 6 weeks.

View Article and Find Full Text PDF

Background: About 80% of tympanic membrane tears consequential of middle ear infections or trauma restore spontaneously. Myringoplasty is the procedure to fix the perforation which fails to heal. It is of two types; overlay and underlay techniques.

View Article and Find Full Text PDF

Intense efforts have been made to eliminate toxic volatile organic compounds (VOCs) in indoor environments, especially formaldehyde (FA). In this study, the removal performances of gaseous FA using two metal-organic frameworks, MOF-5 and UiO-66-NH, and two covalent-organic polymers, CBAP-1 (EDA) and CBAP-1 (DETA), along with activated carbon as a conventional reference material, were evaluated. To assess the removal capacity of FA under near-ambient conditions, a series of adsorption experiments were conducted at its concentrations/partial pressures of both low (0.

View Article and Find Full Text PDF

The adsorption characteristics of four aromatic hydrocarbons (i.e., benzene, toluene, xylene, and styrene) onto ground-activated carbon were investigated both independently and as a mixture of the four at <10 Pa partial pressures (e.

View Article and Find Full Text PDF

Covalent-organic polymers (COPs) are recognized for their great potential for treating diverse pollutants via adsorption. In this study, the sorption behavior of benzene and toluene was investigated both individually and in a binary mixture against two types of COPs possessing different -NH functionalities. Namely, the potential of COPs was tested against benzene and toluene in a low inlet partial pressure range (0.

View Article and Find Full Text PDF

The effective removal technique is necessary for the real world treatment of a hazardous pollutant (e.g., gaseous benzene).

View Article and Find Full Text PDF

To effectively remove gaseous pollutants from air using sorbents, a thorough knowledge of the actual sorption performance is needed at ambient conditions rather than at unrealistically high-pressure conditions, as is commonly presented in the literature. To this end, the sorbent capacities of gaseous benzene were evaluated at a constant sorbent bed inlet pressure (50 ppm or ~5 Pa) in 1 atm of N, room temperature (298 K), a fixed flow rate (50 mL min), and equal outlet sampling intervals (5 min). The benzene adsorption patterns were investigated against six sorbent types in a total of 17 different forms: 1- zeolite in five forms: beads (ZB), ground to 212 µm (ZG212), beads ground to 300 µm (ZG300), coarsely ground/washed zeolite (ZWc), and coarsely ground/washed/thermally treated zeolite (ZTc), 2- activated carbon in two forms: 212 µm (ACd212) and granular (ACdg), 3- Carbopack-X (CX), 4- Tenax TA (TA), 5- used black tea leaves of 150 or 300 µm in three forms: dry (TD150/TD300), wet (TW150/TW300), and wet dust (TWd), and 6- used ground coffee in either dry (CD) or wet forms (CW).

View Article and Find Full Text PDF

The concentrations of C-C volatile aromatic hydrocarbons (AHCs) in air were measured at an urban air quality monitoring station in Jong-Ro, Seoul, Korea, between 2013 and 2015. Their temporal patterns (e.g.

View Article and Find Full Text PDF
Article Synopsis
  • The study monitored sulfur dioxide (SO) levels in Seoul's Yong-san district from 1987 to 2013, finding a slight overall reduction in concentration amid rising urbanization and industrialization.
  • Mean SO levels decreased from 6.57 ppb in 1987-1988 to 5.29 ppb in 2004-2013, showing a correlation with other pollutants like carbon monoxide (CO) due to stricter emissions regulations.
  • Seasonal trends were observed, particularly in the last two periods, influenced by coal heating and weather, demonstrating the impact of both human activities and environmental conditions on air quality.
View Article and Find Full Text PDF