A method for total calcium in serum was optimized, a dual double-beam atomic absorption spectrophotometer being used, with strontium as an internal reference. The effect of HCI and lanthanum concentrations on the signals of both calcium and strontium was determined. The final analysis was unaffected by known sources of interference in serum at a 50-fold dilution of serum in 50mmolar HCI contain...

Atomic Layer Deposition of Platinum on Strontium Titanate Surfaces Tremendous energy savings and environmental benefits are possible from improved catalysts for chemical manufacturing and emissions reduction. Breakthroughs in catalyst development will be enabled by precise methods for synthesizing nanostructured materials. Atomic layer deposition (ALD) is a thin film growth technique that is cu...

OBJECTIVE To determine the surgical outcome of patients with axial cervical spine fractures. METHODS The randomised double-blinded placebo-controlled clinical study was conducted at the Indus Hospital, Karachi, from August 2011 to August 2013. Patients were randomised to receive placebo or strontium ranelate postoperatively after surgical fixation of tibial diaphyseal fractures. Assessment of...

background and aims . the aim of this study was to evaluate the clinical desensitizing effects of potassium nitrate and strontium acetate in reduction of hypersensitivity. materials and methods . thirty eight patients who presented dental hypersensitivity were selected and randomly allo-cated into two groups. group i: patients who were treated by potassium nitrate 5% foam, and group ii: patient...

OBJECTIVES To estimate the clinical effectiveness and cost-effectiveness of strontium ranelate for the prevention of osteoporotic fractures in postmenopausal women, at different levels of absolute fracture risk. This considers secondary prevention in women who have sustained a previous fracture and primary prevention in those women without a previous fracture, as women with osteoporosis are asy...

The use of a radioactive check device containing Strontium 90 was investigated to carry out the redundancy checks of Farmer-type ionization chambers. It was not possible to meet the recommended tolerance limits of the redundancy checks without taking into account the angular response of the ionization chambers. The ionization chambers exhibited a maximum variation of 1% in the angular response ...

BEIs: Threshold limit values for chemical substances and physical agents biological exposure indices. Cincinnati, OH: American Conference of Governmental Industrial Hygienists. *ACGIH. 1999b. Strontium chromate. 1999 TLVs and BEIs: Threshold limit values for chemical substances and physical agents biological exposure indices. Cincinnati, OH: American Conference of Governmental Industrial Hygien...

We describe a simple strontium vapor cell for laser spectroscopy experiments. Strontium vapor is produced using an electrically heated commercial dispenser source. The sealed cell operates at room temperature, and without a buffer gas or vacuum pump. The cell was characterized using laser spectroscopy, and was found to offer stable and robust operation, with an estimated lifetime of >10 000 h. ...

Momentum distributions of strontium atoms are characterized by means of bimodal functional dependences, which properties depend on the laser field parameters. It is shown that ultracold fraction of atoms (T ≤ ħ/kB) can reach 60 %. The calculations are based on the quantum treatment of the problem with taking into account the recoil effect in full. The results can be used for ultradeep laser co...

The present study investigates the retention mechanisms of cesium and strontium for alkali-activated cements. Retention mechanisms such as adsorption and precipitation were examined in light of chemical interactions. Batch adsorption experiments and multi-technical characterizations by using X-ray diffraction, zeta potential measurements, and the N₂ gas adsorption/desorption methods were conduc...