Abstract Chemical modification of poly(vinyl alcohol) (PVA) with different monomers is a convention method for the development its properties. In this study, new multifunctional membranes (PVA-A) 1–3 , (PVA-P) (PVA-AG) and (PVA-PG) were designed synthesized by reaction PVA heterocyclic compounds [ N ʹ-bi- α -azido succinimide (A), -phthalimido- (P)] using glutaraldehyde (G) as cross-linker, res...

N-Methyl-Nʹ-propyltrimethoxysillylimidazolium chloride was prepared as ionic liquid (IL) containing silylating agent and then used for modification of the internal surface of SBA-15 to gain a heterogeneous ionic liquid catalyst. Subsequently, the obtained SBA-IL was characterized using various techniques, including SEM and TEM images, FT-IR, X-ray diffraction, TGA/DTA and BET ...

Identifying vulnerable groups and/or individuals’ cardiorespiratory fitness (CRF) is an important challenge for clinicians/researchers alike. To quantify CRF accurately, the assessment of several variables now standard practice including maximal oxygen uptake ( V ʹ CO 2 ) and ventilatory efficiency, latter assessed using minute ventilation/carbon dioxide production E / slope. Recently, referenc...

Residual doses may cause overestimation of electron spin resonance (ESR) ages for fluvial sediments. However, ESR residual in outburst megaflood sediments have rarely been evaluated. The Jinsha River, situated the southeastern Tibetan Plateau, is characterized by active faults, narrowed canyons, and dammed lakes. Consequently, river a rare opportunity reconstruction study flood events from pale...

introductapplication of neural network of multi layers perceptron (mlp) in site selection of municipal solid ‎waste landfilling with emphasis on hydrogeomorphic characteristics (case study: fereydoonshahr city)‎introduction‏:‏cities are at the nexus of a further threat to the environment, namely the production of an increasing ‎quantity and complexity of wastes. the estimated quantity of munici...