Assessment of commercially available and experimental hydrogen electrodes

NASA Lewis Research Center is currently involved in advanced cell component development for nickel-hydrogen cells and batteries. Long life, high energy density, improved performance and reliability are required for energy storage systems in future space missions. Commercially available as well as experimental hydrogen electrodes were assessed and copared to the state-of-the-art hydrogen electrode that is currently being used in nickel-hydrogen batteries. These electrodes were evaluated by scanning electron microscopy and standard electrochemical polarization measurements. Production variables such as Teflon content and platinum catalyst loading were considered in order to assess various hydrogen electrods with regard to the different electrode manufacturing processes

Nickel-hydrogen component development

Light weight energy storage systems for future space missions are investigated. One of the systems being studied is the nickel hydrogen battery. This battery is designed to achieve longer life, improve performance, and higher energy densities for space applications. The nickel hydrogen component development is discussed. Test data from polarization measurements of the hydrogen electrode component is presented

Chromium electrodes for REDOX cells

An improved electrode having a gold coating for use in the anode compartment of a REDOX cell is described. The anode fluid utilizes a chromic/chromous couple. A carbon felt is soaked in methanol, rinsed in water, dried and then heated in KOH after which it is again washed in deionized water and dried. The felt is then moistened with a methanol water solution containing chloroauric acid and is stored in a dark place while still in contact with the gold-containing solution. After all the gold-containing solution is absorbed in the felt, the latter is dried by heat and then heat treated at a substantially greater temperature. The felt is then suitable for use as an electrode and is wetted with water or up to two molar HCl prior to installation in a REDOX cell. The novelty of the invention lies in the use of KOH for cleaning the felt and the use of alcohol as a carrier for the gold together with the heat treating procedure

Conflation of short identity-by-descent segments bias their inferred length distribution

Identity-by-descent (IBD) is a fundamental concept in genetics with many applications. In a common definition, two haplotypes are said to contain an IBD segment if they share a segment that is inherited from a recent shared common ancestor without intervening recombination. Long IBD segments (> 1cM) can be efficiently detected by a number of algorithms using high-density SNP array data from a population sample. However, these approaches detect IBD based on contiguous segments of identity-by-state, and such segments may exist due to the conflation of smaller, nearby IBD segments. We quantified this effect using coalescent simulations, finding that nearly 40% of inferred segments 1-2cM long are results of conflations of two or more shorter segments, under demographic scenarios typical for modern humans. This biases the inferred IBD segment length distribution, and so can affect downstream inferences. We observed this conflation effect universally across different IBD detection programs and human demographic histories, and found inference of segments longer than 2cM to be much more reliable (less than 5% conflation rate). As an example of how this can negatively affect downstream analyses, we present and analyze a novel estimator of the de novo mutation rate using IBD segments, and demonstrate that the biased length distribution of the IBD segments due to conflation can lead to inflated estimates if the conflation is not modeled. Understanding the conflation effect in detail will make its correction in future methods more tractable

EIU Ensemble Previews USO Concert Act

U ovom diplomskom radu implementirana je mobilna aplikacija radio postaje Radio Student za operacijski sustav Android . Unutar rada nalazi se pregled odabranih postojećih web i mobilnih rješenja hrvatskih i inozemnih radio postaja te su, na temelju provedene analize, odabrani funkcijski zahtjevi za implementaciju. Prema odabranim funkcionalnostima, razvijen je prototip aplikacije u web alatu za prototipiranje - Proto.io na temelju kojeg su testirani zahtjevi aplikacije. Također, pojašnjeni su pojmovi vezani uz Android operacijski sustav te su opisani njegova arhitektura i aplikacijske komponente. Nadalje, prikazana je upotreba nekih klasa i metoda koje su korištene u izradi ove mobilne aplikacije. Završena aplikacija omogućuje korisniku slušanje sadržaja radio postaje Radio Student putem interneta, uvid u program radio postaje u realnom vremenu te prikazivanje arhive radijskog sadržaja na zahtjev.In this graduate thesis, a mobile application was implemented for radio station Radio Student and Android operating system. Within the work there is a review of the selected existing web and mobile solutions of Croatian and foreign radio stations and, on the basis of the analysis carried out, chosen functional requirements for implementation. According to the selected functionalities, the prototype of the application was developed in the web tool Proto.io and functionality test was made. Also, the terms are explained related to the Android operating system and its architecture and application components are described. In addition, some of the classes and methods used in making this mobile app are shown. Developed application allows users to listen to the radio station Radio Student content via the Internet, view the program of the radio station in real time, and display the archive on demand

Cross‐Cultural Headache Care Within the United States: Speaking the Unspoken

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/162745/2/head13878.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/162745/1/head13878_am.pd

Fireside Chat | Luke Charleston ’08 in Complex Financings and Transactions

https://digitalcommons.nyls.edu/filler_institute_events/1005/thumbnail.jp