Transport of ⁸⁵Sr and ¹³⁷Cs under induced clay suspensions

“The purpose of this study was to evaluate the effect of induced clay suspensions on the transport of 85Sr and 137Cs in an aqueous environment. An instrumented flume was used as a model river to simulate an environment typical of a slow-moving, unpolluted, turbid stream. Modified longitudinal dispersion relationships were used to describe the transport of radionuclides in turbid streams. Data were derived from instantaneous release of 85Sr and 137Cs with suspended Attapulgite and Kaolinite clays. Continuous release of 137Cs with an Attapulgite clay suspension helped to establish uptake and transport characteristics for one environmental condition. Aquaria and laboratory studies preceded the model river experiments to define more specifically some of the physical and chemical characteristics. Suspended clay in the model river system produced a significant reduction in the transport of 137Cs. Conversely, the transport of 85Sr was not affected appreciably since most of the 85Sr remained in solution”—Abstract, pages iv-v

Innovative on-site soil disposal systems for septic tank effluent

Innovative on-site soil disposal systems for septic tank effluen

Effects of Adipose-Derived Biogenic Nanoparticle-Associated microRNA-451a on Toll-like Receptor 4-Induced Cytokines

Extracellular vesicles (EVs) are cell-released nanoparticles that transfer biomolecular content between cells. Among EV-associated biomolecules, microRNAs (miRNAs/miRs) represent one of the most important modulators of signaling pathways in recipient cells. Previous studies have shown that EVs from adipose-derived mesenchymal stromal cells (MSCs) and adipose tissue modulate inflammatory pathways in macrophages. In this study, the effects of miRNAs that are abundant in adipose tissue EVs and other biogenic nanoparticles (BiNPs) were assessed in terms of altering Toll-like receptor 4 (TLR4)-induced cytokines. TLR-4 signaling in macrophages is often triggered by pathogen or damage-induced inflammation and is associated with several diseases. This study demonstrates that miR-451a, which is abundant in adipose tissue BiNPs, suppresses pro-inflammatory cytokines and increases anti-inflammatory cytokines associated with the TLR4 pathway. Therefore, miR-451a may be partially responsible for immunomodulatory effects of adipose tissue-derived BiNPs