Gregor Schmid
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View article: GALILEI G6 Lens Professional
GALILEI G6 Lens Professional Open
The Galilei G6 is an anterior segment tomographer/topographer based on Scheimpglug and Placido technologies. Additionally, optical biometry is performed with a partial coherence interferometer. A robust anterior corneal topography is obtai…
View article: Repeatability and reproducibility of the galilei G6 and its agreement with the pentacam® AXL in optical biometry and corneal tomography
Repeatability and reproducibility of the galilei G6 and its agreement with the pentacam® AXL in optical biometry and corneal tomography Open
The Galilei G6 and Pentacam® AXL measurements show evidence of repeatability, reproducibility, and agreement for examined parameters. Certain caution needs to be applied in cases with moderate or severe corneal cylinder, due to discrepanci…
View article: Repeatability and reproducibility of the galilei G6 and its agreement with the pentacam® AXL in optical biometry and corneal tomography
Repeatability and reproducibility of the galilei G6 and its agreement with the pentacam® AXL in optical biometry and corneal tomography Open
To assess the repeatability and reproducibility of corneal measurements performed by the Galilei G6 and determine its agreement with the Pentacam® AXL. 105 eyes underwent examination by both devices, measuring nine parameters. Paired t-tes…
View article: Noise characteristics of a reduced blade count rotor with improved stage efficiency
Noise characteristics of a reduced blade count rotor with improved stage efficiency Open
A reduction in rotor blade count in combination with a gain in aerodynamic performance is a desirable design goal for gas turbines to reduce the overall operational costs. Reducing the number of blades provokes inherently an increase in bl…
View article: Purge flow effects on rotor hub endwall heat transfer with extended endwall contouring into the disk cavity
Purge flow effects on rotor hub endwall heat transfer with extended endwall contouring into the disk cavity Open
Efficiency improvements for gas turbines are strongly coupled with increasing turbine inlet temperatures. This imposes new challenges for designers for efficient and adequate cooling of turbine components. Modern gas turbines inject bleed …
View article: Purge Flow Effects on Rotor Hub Endwall Heat Transfer with Extended EndwallContouring into the Disk Cavity
Purge Flow Effects on Rotor Hub Endwall Heat Transfer with Extended EndwallContouring into the Disk Cavity Open
Efficiency improvements for gas turbines are strongly coupled with increasing turbine inlet temperatures. This imposes new challenges for designers for efficient and adequate cooling of turbine components. Modern gas turbines inject bleed …
View article: Purge Flow Effects on Rotor Hub Endwall Heat Transfer with Extended Endwall Contouring into the Disk Cavity
Purge Flow Effects on Rotor Hub Endwall Heat Transfer with Extended Endwall Contouring into the Disk Cavity Open
Efficiency improvements for gas turbines are strongly coupled with increasing turbine inlet temperatures. This imposes new challenges for designers for efficient and adequate cooling of turbine components. Modern gas turbines use bleed air…
View article: Effect of purge air on rotor endwall heat transfer of an axial turbine
Effect of purge air on rotor endwall heat transfer of an axial turbine Open
In order to gain in cycle efficiency, turbine inlet temperatures tend to rise, posing the challenge for designers to cool components more effectively. Purge flow injection through the rim seal is regularly used in gas turbines to limit the…
View article: Novel high-pressure turbine purge control features for increased stage efficiency
Novel high-pressure turbine purge control features for increased stage efficiency Open
Rim seals throttle flow and have shown to impact the aerodynamic performance of gas turbines. The results of an experimental investigation of a rim seal exit geometry variation and its impact on the high-pressure turbine flow field are pre…
View article: Experimental diagenesis of organo-mineral structures formed by microaerophilic Fe(II)-oxidizing bacteria
Experimental diagenesis of organo-mineral structures formed by microaerophilic Fe(II)-oxidizing bacteria Open
Twisted stalks are organo-mineral structures produced by some microaerophilic Fe(II)-oxidizing bacteria at O2 concentrations as low as 3 μM. The presence of these structures in rocks having experienced a diagenetic history could indicate m…