Recombinant Human Gastric Intrinsic Factor [His]

Background and study aims The repair costs of gastrointestinal endoscopes account for a significant proportion of the total budget of an endoscopy unit. This study evaluated the repair costs of small-caliber endoscopes and conventional endoscopes used in esophagogastroduodenoscopy (EGD). Patients and methods A retrospective analysis of upper gastrointestinal endoscope damage and repair costs between April 2012 and May 2019 was performed at the Toyoshima Endoscopy Clinic. Conventional endoscopes (GIF-H260, GIF-HQ290, and GIF-H290Z) were used for transoral EGD while small-caliber endoscopes (GIF-XP260N and GIF-XP290N) were used for transnasal or transoral EGD. Results Three small-caliber endoscopes and five conventional endoscopes were used for 1,031 procedures and 31,192 procedures, respectively. The number of procedures/damage incidence for small-caliber endoscope and conventional endoscopes was 344 and 1950, respectively. Damage incidence for small-caliber endoscopes was significantly higher than for conventional endoscopes ( P = 0.014). Repair costs/procedure were $ 5.95 +/- $132 for small-caliber endoscopes and $2.41 +/- $115 for conventional endoscopes. Repair costs/procedure for small-caliber endoscopes were more than twice those for conventional endoscopes. Conclusions Small-caliber endoscopes are more fragile than conventional endoscopes.

Columnar-structured Mg97.27Zn2.54Y0.19 alloy with the preferred growth direction of < 224 over bar 3 & rang;, and Mg98.01Zn1.84Y0.13Zr0.03 alloy with the preferred growth direction of < 112 over bar 0 & rang; were prepared using the directional solidification technique and then tensile tested at 250-300 degrees C. The results showed that the Mg97.27Zn2.54Y0.19 alloy with columnar dendritic structure experienced a significant deformation strengthening period when stretched at 250 degrees C, and a typical dynamic recrystallization stage at 300 degrees C, which were mainly accounted for its well-developed secondary dendrites, a large number of branch-shaped second phases distributed in the longitudinal grain boundary, and less granular second phases existing in the crystal. While in the whole test temperature range (250-300 degrees C), the stress-strain curves of Mg98.01Zn1.84Y0.13Zr0.03 alloys with cellular dendritic crystals showed a steady deformation state because of the second phases with strip distributing in the longitudinal grain boundary, which was induced by a balance between the deformation strengthening and the dynamic recrystallization. Especially at 300 degrees C, this steady deformation state existed in the strain of 5.6%-36%. The good uniform plastic deformation was closely related to the small misorientations between columnar grains, the associated movement of grains by grain boundary slipping, and the less percentage of dynamically recrystallized grains which could do harm to the orientation continuity of the columnar crystals. Graphic The directionally solidified Mg98.01Zn1.84Y0.13Zr0.03 and Mg97.27Zn2.54Y0.19 alloys with different orientation and grain morphology show different high temperature mechanical properties at 250 degrees C and 300 degrees C.