Four new membersofpeptaibol antibiotics, designated as chrysospermins A, B, C, and D, were isolated from the mycelium of Apiocrea chrysosperma AplOl by solvent extraction, silica gel chromatographyand preparative recycling HPLC. Their structures as newnonadecapeptides were settled by detailed spectroscopic analysis and chemical degradation experiments. The chrysospermins display antibacterial a...

A dramatic shift in chemical engineering undergraduate education is proposed, based on discipline-wide workshop discussions that have taken place over the past year, to be developed and implemented over a ten-year period. Through this process broad concensus has been developed regarding basic principles for chemical engineering undergraduate eduction in the future; these principles address fund...

In this research, the chemical recycling of terephthalic acid from PET waste by using nano Fe3O4@Py-APTS as solid support was reported. The performance of organically modified nano magnetic was examined in detail and the results were compared with unsupported reactions as the model. By using the solid support, the required time for complete glycolysis, consumption of solvent and catalyst, decre...

background: economical category is an influential area which determines the activity potential in every business. studying the market is one of the effective methods in economical evaluations. recycling market is investigated in order to study and analysis current recycling market and to determine the rate of investment and business attractions in this field in isfahan province. methods: inform...

Short-fiber-reinforced thermoplastic composites (SFRTCs) and particle-filled (PFTCs) are widely used in various industrial sectors, from automotive to electronic appliances, building constructions domestic equipment. Their environmental impact could be significantly reduced through both open closed loop recycling, which allows a reduction of the usage new resources limit energy consumption CO2 ...

Recently, the Feringa Nobel Prize Scientist Joint Research Center demonstrated a green method to synthesize plastics from natural small thioctic acid (TA) monomers. This novel recycling system provides successful chemical using dual closed-loop process under mild operating conditions. Here, we discuss critical environmental sustainability dynamics of these systems and their potential support pl...

Estrogenic pollution and its control in aquatic systems have drawn substantial attention around the world. The chemical and biological assessment approaches currently utilized in the laboratory or field cannot give an integrated assessment of the pollution when used separately. In this study, in situ chemical and biological methods were combined to detect pollution in a water recycling system. ...