Planetary Dynamics and Habitable Planet Formation In Binary Star Systems

Whether binaries can harbor potentially habitable planets depends on several factors including the physical properties and the orbital characteristics of the binary system. While the former determines the location of the habitable zone (HZ), the latter affects the dynamics of the material from which terrestrial planets are formed (i.e., planetesimals and planetary embryos), and drives the final architecture of the planets assembly. In order for a habitable planet to form in a binary star system, these two factors have to work in harmony. That is, the orbital dynamics of the two stars and their interactions with the planet-forming material have to allow terrestrial planet formation in the habitable zone, and ensure that the orbit of a potentially habitable planet will be stable for long times. We have organized this chapter with the same order in mind. We begin by presenting a general discussion on the motion of planets in binary stars and their stability. We then discuss the stability of terrestrial planets, and the formation of potentially habitable planets in a binary-planetary system.Comment: 56 pages, 29 figures, chapter to appear in the book: Planets in Binary Star Systems (Ed. N. Haghighipour, Springer publishing company

Managing State In A Microservice

this report takes a close look at the problem of state in modern applications, how it affects the architecture. Popularity of microservices raised the issue of information acquisition. Analyzing solutions to this problem is the main topic of the article. Multiple approaches to communication were examined with a focus on defining its advantages and disadvantages. Coupling, availability and consistency were analysed, suitable use cases were defined and ways to negate drawbacks were suggested. Microservice architecture implies multiple sources of data so accessing required information is a task in and of itself. This article will review many approaches to dealing with state within a service: stateless microservice, command query responsibility segregation principle, on demand direct communication with and without caching on top and event sourcing

Impacts of Variability and Uncertainty in Solar Photovoltaic Generation at Multiple Timescales

The characteristics of variability and uncertainty of PV solar power have been studied extensively. These characteristics can create challenges for system operators who must ensure a balance between generation and demand while obeying power system constraints at the lowest possible cost. A number of studies have looked at the impact of wind power plants, and some recent studies have also included solar PV. The simulations that are used in these studies, however, are typically fixed to one time resolution. This makes it difficult to analyze the variability across several timescales. In this study, we use a simulation tool that has the ability to evaluate both the economic and reliability impacts of PV variability and uncertainty at multiple timescales. This information should help system operators better prepare for increases of PV on their systems and develop improved mitigation strategies to better integrate PV with enhanced reliability. Another goal of this study is to understand how different mitigation strategies and methods can improve the integration of solar power more reliably and efficiently

The Optical Instrumentation of the ATLAS Tile Calorimeter

The purpose of this Note is to describe the optical assembly procedure called here Optical Instrumentation and the quality tests conducted on the assembled units. Altogether, 65 Barrel (or LB) modules were constructed - including one spare - together with 129 Extended Barrel (EB) modules (including one spare). The LB modules were mechanically assembled at JINR (Dubna, Russia) and transported to CERN, where the optical instrumentation was performed with personnel contributed by several Institutes. The modules composing one of the two Extended Barrels (known as EBA) were mechanically assembled in the USA, and instrumented in two US locations (ANL, U. of Michigan), while the modules of the other Extended barrel (EBC) were assembled in Spain and instrumented at IFAE (Barcelona). Each of the EB modules includes a subassembly known as ITC that contributes to the hermeticity of the calorimeter; all ITCs were assembled at UTA (Texas), and mounted onto the module mechanical structures at the EB mechanical assembly locations.The Tile Calorimeter, covering the central region of the ATLAS experiment up to pseudorapidities of ±1.7, is a sampling device built with scintillating tiles that alternate with iron plates. The light is collected in wave-length shifting (WLS) fibers and is read out with photomultipliers. In the characteristic geometry of this calorimeter the tiles lie in planes perpendicular to the beams, resulting in a very simple and modular mechanical and optical layout. This paper focuses on the procedures applied in the optical instrumentation of the calorimeter, which involved the assembly of about 460,000 scintillator tiles and 550,000 WLS fibers. The outcome is a hadronic calorimeter that meets the ATLAS performance requirements, as shown in this paper

The Production and Qualification of Scintillator Tiles for the ATLAS Hadronic Calorimeter

The production of the scintillator tiles for the ATLAS Tile Calorimeter is presented. In addition to the manufacture and production, the properties of the tiles will be presented including light yield, uniformity and stability

Association of polymorphic markers in innate immunity receptor genes with the risk of primary adrenal insufficiency

Primary adrenal insufficiency is a disease resulting from bilateral destruction of the adrenal cortex. The most common etiological factors are autoimmune disorders and infectious diseases, which indicates the key role of the immune system in the development of this pathology. Activation of innate immune receptors leads to transcription of genes for pro-inflammatory cytokines and type I interferons, which contributes to the further development of the inflammatory process, activating both adaptive and innate immunity. The role of pattern recognition receptors and type I interferons has been previously shown in many autoimmune pathologies, but their significance in primary adrenal insufficiency is still not well understood. To gain a broader understanding of the occurring processes, innate immune receptors are being studied at both the molecular and genetic levels. Thus, the purpose of our work was to study polymorphic markers in the genes of interferon, NOD- and RIG-like receptors and their association with the risk of developing primary adrenal insufficiency. The biomaterial was collected from patients with primary adrenal insufficiency and from healthy individuals and was examined using real-time polymerase chain reaction. It was found that among the six polymorphic markers (rs2257167 in the IFNAR1 gene, rs2229207 in the IFNAR2 gene, rs2075822 in the NOD1 gene, rs8057341 and rs3135499 in the NOD2 gene and rs1990760 in the IFIH1 gene), there are only two sufficient predictors of the risk of developing primary adrenal gland disease: rs2257167 (IFNAR1) and rs2229207 (IFNAR2). The association of heterozygous genotypes of the polymorphic markers rs2257167 (IFNAR1) and rs2229207 (IFNAR2) with the risk of developing pathology, as well as the protective role of the CC genotype of the polymorphic marker rs2257167 (IFNAR1) was shown. The results obtained can be used for early diagnostics of the disease. These data can contribute to a better understanding of the pathogenesis of primary adrenal insufficiency and serve as the basis for further research in the field of personalized medicine. These markers can also be studied in connection with the severity of primary adrenal insufficiency, complications, as well as in connection with the effectiveness of the therapy

Hydrogen Macro System Model User Guide, Version 1.2.1

The Hydrogen Macro System Model (MSM) is a simulation tool that links existing and emerging hydrogen-related models to perform rapid, cross-cutting analysis. It allows analysis of the economics, primary energy-source requirements, and emissions of hydrogen production and delivery pathways

Purdue Hydrogen Technology Program

Presented at the 2006 DOE Hydrogen, Fuel Cells & Infrastructure Technologies Program Annual Merit Review in Washington, D.C., May 16-19, 2006

The Kidneys and Aldosterone/Mineralocorticoid Receptor System in Salt-Sensitive Hypertension

Strong evidence supports the ability of the aldosterone/mineralocorticoid receptor (MR) system to dominate long-term blood pressure control. It is also increasingly recognized as an important mediator of cardiovascular and renal diseases, particularly in the presence of excessive salt intake. In a subgroup of individuals with metabolic syndrome, adipocyte-derived aldosterone-releasing factors cause inappropriate secretion of aldosterone in the adrenal glands during salt loading, resulting in the development of salt-induced hypertension and cardiac and renal damage. On the other hand, emerging data reveal that aldosterone is not a sole regulator of MR activity. We have identified the signaling crosstalk between MR and small GTPase Rac1 as a novel pathway to facilitate MR signaling. Such a local control system for MR can also be relevant to the pathogenesis of salt-sensitive hypertension, and future studies will clarify the detailed mechanism for the intricate regulation of the aldosterone/MR cascade