Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
The study of ultracold molecules is a science of its own. Ultracold molecules provide the possibility to investigate fundamental chemical processes or to…
An international team of researchers led by X-ray scientist Christoph Bostedt of the U.S. Department of Energy's (DOE) Argonne National Laboratory and Tais…
The invention relates to a method which produces repeated and reproducible 4D-movements of a phantom model for measurements in PET, SPECT, CT and radio oncologic accelerators. According to the invention, the usable phantoms illustrate realistic tumor geometries with-out interfering glass and plastic partitions. With the help of the invention, PET-, SPECT- and CT-data can be evaluated. Additionally new algorithms of re-construction and the influence of ana-tomic movements on medical imaging can be tested for all of the three tech-niques. With the help of a kinematic con-catenation which consists of two rota-tional and one prismatic joint, the 3D-movements of the phantom models can be adapt on trajectories analog to the human respiration.
Every year, thousands of people lose their way in forests and mountain areas. In Switzerland alone, emergency centers respond to around 1,000 calls annually…
Detecting tornadoes that sweep across Mars. Discovering meteors that fall to Earth. Investigating strange lightning that flashes from Earth's atmosphere into…
The study has been published in the respected academic journal PNAS (Proceedings of the National Academy of Sciences of the United States of America).
On the occasion of this anniversary, a celebration was held at the APEX base station in Sequitor, San Pedro de Atacama, including a visit to the APEX telescope…
Researchers at the French National Centre for Scientific Research, CNRS, and the University of Lorraine have recently developed a design for a coiled-up…
The present invention describes a measur-ing device that allows for the accurate de-termination of intraocular pressure by attaching a measuring body to the closed eyelid. The measuring principle is based on the subjective intraocular pressure es-timation by the palpating finger and will be implemented in an objective measuring method by the device described herein.
The existing development is based on an approximation of the contour of the in-dented eye which flattens the enveloping tissue and simultaneously adapts to the contour of the eye’s surface. In the broad-est sense it is as an adaptation of covering eyelid tissue to an expanded surface of the eye. The device basically consists of two pressure units made from silicone, which are independently and resiliently mounted from another. The pressure of the first membrane is applied via a struc-turally designed spring and serves to smooth the upper eyelid and the indirect fixation of the eyeball. The pressure of the second membrane is applied via two springs and is continuously increased to-wards measurement point when no further flattening of the second membrane is visi-ble. Consequently, the pressure character-istics of the eye are transferred from the first membrane to the second membrane. The flattening is monitored by an LED light reflex and the maximum value can thus be easily determined.
The present invention is of particular ad-vantage for measurements of intraocular pressure in patients with an injured or dis-eased cornea.
This steel mounting part provides a fully rigid connectiv ity between tubular composite column and reinforced concrete slab.
Simultaneously, it solves punching shear problems in the reinforced concrete slab by increasing its shear capacity.
The quantum state of a molecular ion has been measured live and in a non-destructive fashion for the first time
Superconductors have long been confined to niche applications, due to the fact that the highest temperature at which even the best of these materials becomes…
Researchers assumed that tiny objects would instantly blow up when hit by extremely intense light from the world's most powerful X-ray laser at the Department…
Slated for launch in 2018, NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2) also will carry a 3-D printed part made of polyetherketoneketone (PEKK),…
The world of quantum mechanics happens only in small scales around a few nanometers. In this nanoworld, particles can behave like waves, and vice versa and…
Researchers at the Goethe University have discovered an important mechanism for superconductivity in a metallic compound containing ytterbium, rhodium and…
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