Large-scale application of alginate-poly-L-lysine (alginate-PLL) capsules used for microencapsulation of living cells is hampered by varying degrees of success, caused by tissue responses against the capsules in the host. A major cause is proinflammatory PLL which is applied at the surface to provide semipermeable properties and immunoprotection. In this study, we investigated whether applicati...

Biofouling causing an increase in plastic density and sinking is one of the hypotheses to account for unexpectedly low amount buoyant debris encountered at ocean surface. Field surveys show that polyethylene polypropylene, two most abundant plastics, both occur below surface sediments, experimental studies confirm biofouling can cause these plastics sink. However, quantifying actual fouled are ...

Abstract This study endeavors to augment the antibacterial and anti‐biofouling properties of thin‐film composite polyamide membranes by subjecting them modification with chitosan silver nanoparticle materials through UV‐induced graft polymerization technique. Various surface assessment methods were employed, efficiency membrane performance was demonstrated flux retention filtration process, whi...

Milli-channel baffle labyrinths are widely used in drip irrigation systems. They induce a pressure drop enabling irrigation. However, with section thickness that is measured mm 2 , they sensitive to clogging, which reduces the performance and service life of system. The impact chlorination (1.5 ppm free chlorine during 1 h application) flushing (0.18 MPa) on biofouling non-pressure-compensating...

OBJECTIVE We characterized electrode stability over twelve weeks of impedance and neural recording data from four chronically-implanted Utah arrays in two rhesus macaques, and investigated the effects of glial scarring and interface interactions at the electrode recording site on signal quality using a computational model. APPROACH A finite-element model of a Utah array microelectrode in neur...

Biofouling from microorganisms, plants, barnacles, mussels or algae is a major problem for marine structures. Fouling leads to increased fuel costs due frictional resistance on ships, and reduces reserve buoyancy of floating offshore structure, in addition causing cage deformation structural fatigue, impacting endurance materials. The intrusion invasive aquatic species (IAS) new environments by...

Manganese oxidizing bacteria colonizing the titanium surfaces exposed to seawater were characterized by periodically retrieving the coupons over a period of two years. About 20% of the initial colonizers were capable of oxidizing manganese, and the dominant manganese oxidizing bacteria were those belonging to Gram negative Pseudomonas spp. Gram positive, Bacillus spp, were also observed, though...

Members of the marine bacterial genus Pseudoalteromonas are efficient producers of antifouling agents that exert inhibitory effects on the settlement of invertebrate larvae. The production of pigmented secondary metabolites by Pseudoalteromonas has been suggested to play a role in surface colonization. However, the physiological characteristics of the pigments produced by Pseudoalteromonas rema...