A novel 31P NMR method for the determination of purity for the military nerve agents sarin, soman, and VX has been developed. In contrast to more conventional quantitative NMR methods, stem coaxial inserts are placed into the sample tube to introduce reference material into the analysis without mixing or reaction with the analyte. All sample preparation is eliminated, and the analysis is comple...

Molecular cloning is utilized in nearly every facet of biological and medical research. We have developed a method, termed Hot Fusion, to efficiently clone one or multiple DNA fragments into plasmid vectors without the use of ligase. The method is directional, produces seamless junctions and is not dependent on the availability of restriction sites for inserts. Fragments are assembled based on ...

This paper presents the findings from a research study using computational fluid dynamics (CFD) on impact of different diameter Ball Tabulators Inserts (BTI) three-dimensional flow pattern and heat transfer characteristics within circular tube. analysis was carried under uniform flux conditions with BTI diameters (1, 2, 3, 4, 5, 6, 7, 8 mm). Fluid flow, pressure drop, dynamic pressure, velocity...

In the present study, heat transfer and thermal efficiency of double-pipe exchangers with novel Double-Perforated Inclined Elliptic (DPIE) turbulators were experimentally investigated. The range Reynolds number was between 5000 18,000 under turbulent flow regime. inclination angle elliptic inserts (?), perforation diameters (d) varied from 15° to 25°, 0.5 mm < d 1.5 mm, respectively. perforated...

Background: Tolmetin (Tol) is a pyrrole acetic acid derivative that acts as a highly effective topical anti-inflammatory agent. Topical administration of Tol is effective for the management of ocular inflammations.The aim of this study was to formulate and improve a topical ophthalmic delivery system of Tol. Materials and methods: In the present study, ocular inserts of Tol were prepared using ...

During a tracheotomy, the surgeon makes an incision through the front of the patient’s neck (the incision is known as a tracheostomy) to access the trachea and inserts a tracheostomy tube (see Fig. 1), which serves as an alternative airway to the mouth or nose. After insertion, a balloon is inflated to the diameter of the trachea, which fixes the tracheotomy tube in place, allows for positive p...

Numerical investigation for turbulent flow of nanofluid (Ethylene glycol/water-Al2O3) is carried out with a volume fraction 0.5%, 1%, and 1.5%. The diameter solid nanoparticles equal to 20 nm. range Reynolds number in this simulation from 6300 27500 through three-dimensional steel corrugated spirally tube. For enhancement the heat transfer performance internal horizontal tube, tube combined alu...

Abstract By differentiating titanium carbide (TiC) tool and cemented uncoated during the CNC machining of LDX 2101 steel, this experimental approach aims to diminish surface roughness (SR). The control group comprised inserts while featured TiC inserts. These drilling parameters were speed cutting, rate feed, cut depth. number groups was 2, there 27 samples used for each in trials. standard SR ...