Trinitrophenol (Mouse) IgG ELISA Kit

To evaluate surgically induced refractive change (SIRC) by manifest refraction and corneal power changes using an automated keratometer and Scheimpflug rotating camera, and to find the best keratometric measurements reflecting SIRC after hyperopic laser-assisted in situ keratomileusis (LASIK). This retrospective study included 18 eyes of 18 patients undergoing hyperopic LASIK using the Schwind Amaris 750S excimer laser. All measurements were performed preoperatively and 12 months postoperatively. Cycloplegic manifest refractions were performed and keratometric measurements were obtained via an RK-5 automated keratometer and a Pentacam rotating Scheimpflug camera. Sim K, true net power (TNP), and total corneal refractive power (TCRP) at 2.0 to 5.0mm were analyzed using a Scheimpflug camera. The mean manifest refractive changes in the spherical equivalent (SE) at the corneal plane were 2.32 +/- 1.65 D at 12 months postoperatively. The refractive power changes by the automated keratometer and Sim K were significantly less than SIRC (P=. 043 and P=. 048, respectively). Both TNP and the TCRP in the 5.0mm zone produced lesser mean differences with SIRC (0.05 D and 0.06 D) and showed closer agreements with SIRC on Bland-Altman plots and higher correlation coefficients with SIRC. Corneal power measured on the anterior corneal surface underestimated SIRC. TCRP at the 5.0 mm zone provided by a Pentacam Scheimpflug camera reflected the SIRC accurately and precisely, and would be applicable for prediction of intraocular power before cataract surgery and follow-up measurement of corneal refractive power.

3,4,5-Trinitro-1H-pyrazole (TNP) is a novel all-carbon nitrated azole energetic compound with excellent potential, whose explosion and safety performance is affected by its crystal morphology. In this study, an attachment energy (AE) model was employed to study the growth habit of TNP in vacuum and predict the results of the growth habit of the TNP crystals grown from benzene, toluene, dichloromethane and water by the molecular dynamics simulation. The interactions between the solvent molecules and crystal faces were analyzed. The period bond chains (PBCs) of the crystal faces were calculated. The TNP crystals were obtained by the natural cooling experiments in benzene, toluene, dichloromethane and water, respectively. The {1 0 0} crystal form had the largest morphological importance for the TNP crystal habit in vacuum, followed by the {0 1 1} and {0 0 1} forms in turn. The crystal morphology was significantly influenced by the he interactions between the solvent molecules and crystal face. There were three different crystal shapes that are flaky, columnar, and blocky. The aspect ratios of the habit in benzene, toluene, dichloromethane and water were 19.42, 5.65, 5.31 and 3.55, respectively. The predicted TNP morphologies qualitatively agreed with those from the experiment.