Spherical converging shock waves with incoming Mach number 1.18 are generated in a conical test chamber fitted to conventional square-section tube. A wave cutter is employed ensure proper transition from the square cylindrical straight pipe installed upstream of convergent section. The incident planar transformed into spherical by use an ellipsoidal membrane acting as gas lens separating two ga...

A new design for implementation of x-ray diffraction experiments is proposed. The exploitation of the imaging plate technique opens new possibilities to carry out diffraction experiments. The detector chamber in Debye–Scherrer geometry equipped with an image plate takes advantage of this technology such as high resolution, high sensitivity, linearity in intensity, and linearity over the detecto...

PURPOSE This study aimed to quantify the impact of exposure to high altitude on individual layers of the cornea in regard to central corneal thickness (CCT) and the geometry of the anterior chamber angle (ACA). This work is related to the Tübingen High Altitude Ophthalmology study. METHODS Anterior segment spectral domain optical coherence tomography was used to quantify changes in individual...

Recent advances in operating and manipulating DNA have provided unique experimental possibilities many fields of research, especially gene therapy. Researchers deployed techniques, theoretical, to study the structure changes due external perturbation. It is crucial understand structural dynamical molecules a confined state control self-assembly chamber or nano-channel for various applications. ...

During the porthole die extrusion, separated metal streams are welded together in welding chamber. The conditions under which this occurs and integrity of weld seam extrudate impacted by design bridge, including features such as its shape dimensions. In research, commercial finite element method (FEM) software package, DEFORM, was used to run a series simulation experiments order quantitatively...

A large number of particle detectors employ liquid argon as their target material owing to its high scintillation yield and ability drift ionization charge over distances. Scintillation light from is peaked at 128 nm a wavelength shifter required for efficient detection. In this work, we directly compare the achieved in two identical chambers, one which equipped with PolyEthylene Naphthalate (P...

background : in recent years tissue engineering developed to replace or repair damaged tissues using cell and biomaterial. one of the most important fields of tissue engineering is simulation of in vivo micro environment of body tissues. this study aimed to develop culture chamber and cell biomaterial sheet engineering for the reconstruction of cartilage tissue. methods : stainless steel cultur...

introduction for dose measurement in megavoltage (mv) photon beams with ion chambers, the effect of volume occupied by the air cavity is not negligible. therefore, the result of measurement should be corrected with a displacement perturbation correction factor (pdis) or using an effective point of measurement (epom). the aim of this study is to calculate the epom for cylindrical ion chamber and...

This report describes the conceptual design of a particle detector that could be deployed underground for tracking cosmic-ray muons to enable tomographic reconstruction of the overlying ground and structures. The concept of cosmic-ray muon tomography has been known for a long time but seldom used in practice since the first demonstration. Developments in technology and methods of particle detec...

Peter W. Lipman U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA e-mail: [email protected] Abstract Diverse subsidence geometries and collapse processes for ash-flow calderas are inferred to reflect varying sizes, roof geometries, and depths of the source magma chambers, in combination with prior volcanic and regional tectonic influences. Based largely on a revie...