The dynamics of water confined in two different types of reverse micelles are studied using ultrafast infrared pump-probe spectroscopy of the hydroxyl OD stretch of HOD in H2O. Reverse micelles of the surfactant Aerosol-OT (ionic head group) in isooctane and the surfactant Igepal CO 520 (nonionic head group) in 50/50 wt % cyclohexane/hexane are prepared to have the same diameter water nanopools...

We study the degree spectra and reverse-mathematical applications of computably enumerable and co-computably enumerable partial orders. We formulate versions of the chain/antichain principle and ascending/descending sequence principle for such orders, and show that the latter is strictly stronger than the latter. We then show that every ∅′-computable structure (or even just of c.e. degree) has ...

in this report, experimental investigation of waste water treatment by reverse osmosis to enable its reuse in cooling tower is presented. a polyamide spiral wound ro membrane followed by three filters as ro pretreatment (two activated carbon and one cartridge filter) and samples of tehran refinery treated waste water have been used. the effect of operating conditions such as pressure difference...

Recent technological advancements are raising the demand for valuable and critical metals. In a quest to find new resources, cobalt-rich ferromanganese crust (CRFC) is considered as alternative since it contains various metals, including cobalt (Co), nickel (Ni), manganese (Mn). The aim of this work was investigate efficiency (1) enhanced gravity separation by Falcon concentrator (2) reverse fl...

Background: Cell-based treatment approach using differentiated mesenchymal stem cells (MSCs) and mature chondrocytes has been considered as an advanced treatment for cartilage repair. We investigated the differentiated level of these two cell types that is crucial for their repair capacity for cartilage defect at a co-culture micro mass system. Methods: Passaged-2 MSCs isolated from the mouse b...

Combinational Photothermal-Immunotherapy In article number 2206441, Longjiang Zhang, Peng Huang, Zhongqiu Wang, and co-workers load dual-immune inhibitors nanomodulators for combinational photothermal-immunotherapy through regulating abnormal enzymatic metabolism of IDO, blocking PD-L1/PD-1 CD47/SIRPα to reverse immunosuppressive tumor microenvironment, prevent growth re-challenge.

Iron-based catalysts are the most suitable candidates for converting CO2 or CO2-rich syngas to hydrocarbons. However, several issues about mechanism of hydrogenation still unclear. In this work, we investigated performance an iron-based catalyst with H2/CO2, H2/CO/N2 and H2/CO/13CO2/N2 gas mixtures at same process conditions (T = 270°C, P 175 psi SV 3 NL/h/gcat). The rate was much lower than th...

cobalt ferrite is an important magnetic material due to their large magneto-crystalline anisotropy, high cohercivity, moderate saturation magnetization and chemical stability.in this study, cobalt ferrites nanoparticles have been synthesized by the co-precipitation method and a new microemulsion route. we examined the cation occupancy in the spinel structure based on the “rietveld with energies...