The use of positron emitters in medical imaging was first suggested by Wrenn and coworkersl, and Sweet’, and the first prototype Positron Emission Tomography (PET) scanner WM built by Brownell and Sweets as shown in Fig. 22.1. A radiopharmaceutical labeled with a positron emitter is distributed within a biological target. The emitted /3+ annihilates with an electron of the surrounding tissue to...

The implementation of renewable energy sources, and geothermal energy in particular, is becoming increasingly important in Germany. However, geothermal power generation is a high risk, capital intensive technology and its future use will depend on how successfully it can be integrated within the German power grid infrastructure. For this to happen, its inherent operational risks must be reduced...

This article considers the possibility of using unconventional geothermal resources in enhanced systems (EGSs) under Polish geological conditions. In order to obtain additional environmental benefits, EGS CO2 as a medium were analyzed. addition production clean energy, this allows for storage during energy process. The aim paper is analyze conditions EGS-CO2 systems. Criteria established select...

The decline and loss of species is inevitable in the face of growing human pressures on the environment but, according to one group of senior researchers, a standard framework is needed to assess the rate of this decline if researchers wish to be effective and policymakers are to take note.

Abstract We present the results of deep ground-based U -band imaging Extended Groth Strip (EGS) field, and creation a best resolution mosaic depth following seeing-sorted stacking method Ashcraft et al. The analysis uses 324 images taken from 2012 March to 2021 June using Large Binocular Camera. includes 16.4% with FWHM ≤ 0.″9, while 73.5% 1.″6. Each image’s zero-point was matched SDSS u , acco...

*Correspondence: [email protected] 1EOST, Université de Strasbourg/CNRS, 5 rue René Descartes, 67000 Strasbourg, France Full list of author information is available at the end of the article Abstract Background: Observations in enhanced geothermal system (EGS) reservoirs of induced seismicity and slow aseismic slip ruptures on related faults suggest a close link between the two phenom...

Engineered geothermal systems (EGS) present an opportunity to expand the implementation of geothermal power. There has been some interest in the possible application of CO2 as a heat extraction fluid in these systems instead of water, due to a variety of inherent benefits, including being a nonpolar fluid, low viscosity at the temperatures and pressures within the reservoir and a large buoyancy...

Before the end of epoch reionization, Hydrogen in Universe was predominantly neutral. This leads to a strong attenuation Ly$\alpha$ lines $z\gtrsim6$ galaxies intergalactic medium. Nevertheless, has been detected up very high redshifts ($z\sim9$) for several especially UV luminous galaxies. Here, we test what extent galaxy's local environment might impact transmission such sources. We present a...