Ultrasonic study of water adsorbed in nanoporous glasses.

Thermodynamic properties of fluids confined in nanopores differ from those observed in the bulk. To investigate the effect of nanoconfinement on water compressibility, we perform water sorption experiments on two nanoporous glass samples while concomitantly measuring the speed of longitudinal and shear ultrasonic waves in these samples. These measurements yield the longitudinal and shear moduli of the water-laden nanoporous glass as a function of relative humidity that we utilize in the Gassmann theory to infer the bulk modulus of the confined water.

Bacterial dynamics of sugarcane silage in the tropics.

The objective of this study was to evaluate changes in the bacterial community in sugarcane silage, in distinct soil types along the storage period. We depicted the bacterial community associated with sugarcane, before and after ensiling, through a massive sequencing of the gene 16S rRNA using MiSeq platform. The ensilage process shifted the composition of the bacterial community from the heterofermentative lactic acid bacteria Leuconostoc to bacteria belonging to the genera Acinetobacter, Ralstonia and Novosphingobium.

A Strong Test of Atomically Detailed Models of Molecular Adsorption in Zeolites Using Multilaboratory Experimental Data for CO Adsorption in Ammonium ZSM-5.

A recent international interlaboratory study led by the U.S. National Institute of Standards (NIST) reported CO adsorption isotherms measured independently by 11 groups on reference material RM 8852, an ammonium ZSM-5 zeolite.

Arthroscopic arthodesis of subtalar joint.

Isolated subtalar arthrodesis is well accepted for treatment of pathologic conditions of the subtalar joint associated with pain, instability, and deformity that do not respond to conservative treatment. The most frequent indications are primary talocalcaneal or posttraumatic arthrosis; congenital malformations (coalition); or inflammatory diseases. In the last years, arthroscopic subtalar arthrodesis has become an established technique in treatment of the subtalar arthrosis in the absence of deformities, misalignment and bone loss.

Endoscopic therapy of superficial bladder cancer in high-risk patients: Holmium laser versus transurethral resection.

Many lasers are widely used in urological surgery for several applications. Their use to treat the superficial bladder cancer (SBC) is safe and minimally invasive. The Holmium:YAG (Ho:YAG) laser represents the pinnacle of laser technology in Urology.