Size Dependence of the Tetragonal to Orthorhombic Phase Transition of Ammonia Borane in Nanoconfinement.

We have investigated the thermodynamic property modification of ammonia borane via nanoconfinement. Two different mesoporous silica scaffolds, SBA-15 and MCM-41, were used to confine ammonia borane. Using in situ Raman spectroscopy, we examined how pore size influences the phase transition temperature from tetragonal () to orthorhombic () for ammonia borane.

Marker-Dependent Cleavage of RNA by Binary (split) DNAzyme (BiDz) and Binary DNA Machines (BiDM).

Oligonucleotide gene therapy (OGT) can be used to suppress specific RNA in cells and thus has been explored for gene therapy. Despite extensive effort, there is no clinically significant OGT for treating cancer. Low efficiency of OGT is one of the problems.

The corrosion behavior of borosilicate glass in the presence of cementitious waste forms.

Borosilicate glasses are widely used for radioactive waste disposal due to their ability to incorporate a variety of contaminants and radionuclides while exhibiting high durability in various disposal scenarios. This research evaluated the dissolution of borosilicate glass using both single-pass-flow-through (ASTM C1662-18) and product consistency test (ASTM C1285-21) methods with different solutions, including a cementitious-contacted water (called grout-contacted, GC, from this point) and solutions with varying levels of dissolved cementitious species such as Si, Ca, Al. The results indicated that the presence of Ca plays a crucial role in suppressing glass corrosion, as evidenced by the slower normalized dissolution rates, which were one order of magnitude lower for boron and two orders of magnitude lower for rhenium, observed in both Ca-amended and GC solutions compared to the pH 12 buffer solution.

High-pressure high-temperature synthesis of NdRe.

In this study, we report the synthesis of a new cubic neodymium-rhenium metallic alloy NdRe through the utilization of high pressure and laser heating in a diamond anvil cell. NdRe crystallizes in the space group with a lattice parameter equal to 7.486 (2) Å and Z = 8 at 24 (1) GPa and 2,200 (100) K.

RNase H-dependent DNA thresholder modulated by cancer marker concentration.

Threshold antisense oligonucleotide constructs were designed to cleave mRNA within different biomarker concentrations. The mRNA cleavage is activated by 2.6, 7.