132,269 Works

Voxel-wise co-analysis of macro- and microstructural brain alteration in Mild Cognitive Impairment and Alzheimer's disease using anatomical and diffusion MRI

Cardenas, Valerie ; Tosun, Duygu ; Chao, Linda ; Fletcher, P. Thomas ; Joshi, Sarang; Weiner, Michael; Schuff, Norbert


Burkhard Wrenger
Mutlicopter UAV capable of carrying a payload of up to 1.5 kg and a flight time up to 30 min. with instrumentation. The data acquisition system consists of several sensors attached to the AMOC measurement board (up to 24 bit resolution, up to 500 Hz, data storage onboard (up to 100Hz) and simultanous telemetry to ground control station).

NEPS-Zusatzstudie Thüringen: Organisatorische Reform der Oberstufe in Thüringen (TH 1.0.0)

Hans-Günther Roßbach & NEPS, National Educational Panel Study, Bamberg (Germany)

Metal-Free Electrocyclization at Ambient Temperature: Synthesis of 1-Arylcarbazoles

Rajarshi Samanta, Katharina Kulikov, Carsten Strohmann & Andrey Antonchick
An efficient novel protocol for the construction of an hyellazole-inspired compound collection is described. Starting from 2,6-diarylacetanilides, the desired products were obtained using hypervalent iodine promoted electrocyclization. The mechanism of product formation was investigated through intramolecular competition experiments.

Demography of two tunda plants across their North American latitudinal ranges

Duke University & William Morris
All demographic rates were measured for two long-lived, non-clonal tundra plants (Silene acaulis and Polygonum viviparum) in multiple populations from 36 to 69 degrees N latitude, every year since populations were begun from 1995 to 2008 (depending on population) until the present. Soil temperature was also measured over the entire year in all populations since 2008.

ASTER satellite imagery, Deer Creek Center, Selma, OR USA, 8 Sep 2006

Deer Creek Field Station And Education Center
This is ASTER satellite imagery clipped to the boundary of Deer Creek Field Station and Educational Center for 8 September 2006. The original imagery was obtained from http://edcdaac.usgs.gov/main.asp.

EVS - European Values Study 1999/2000 (release 2, Mai 2006) - Island

Friòrik H. Jonsson & Stefan Olafsson
Moralische, religiöse, gesellschaftliche, politische, ökonomische und soziale Wertvorstellungen der Europäer. Themen: Das Fragenprogramm ist dreigeteilt: Neben einem gemeinsamen Fragenprogramm für alle Ländern gibt es ein freiwilliges Zusatzprogramm und weitere länderspezifische Fragen. Gemeinsames Fragenprogramm: Freizeit: Wichtigkeit der Lebensbereiche; Glücksgefühl; Mitgliedschaften und ehrenamtliche Tätigkeiten in Vereinen, Parteien, Organisationen, Bürgerinitiativen und Berufsorganisationen; Verkehrskreise in der Freizeit; Toleranz gegenüber Minderheiten, Andersgläubige und Ausländer; zwischenmenschliches Vertrauen; Selbstwirksamkeit (Skalometer); allgemeine Lebenszufriedenheit (Skalometer). Arbeitswelt: Wichtigkeit ausgewählter Merkmale beruflicher Arbeit (Skala); eigene Erwerbstätigkeit;...

Frequent soundings Site 2

Dominique Legain
Vaisala sounding system Digicora III with RS92 SGP radiosonde. Two ascent balloons, the first balloon is separated at a preset height (pressure sensor) above HBL and The second balloon set the fall rate. For each sounding launched, 2 atmospherics profiles are available. One a launching site, one other at landing site, depending of wind conditions.

The Polar Environment Atmospheric Research Laboratory (PEARL) and the International Arctic Systems for Observing the Atmosphere (IASOA)

James Drummond, Alan Manson, Bruce McArthur, David Hudak, Gordon Shepherd, Marianna Shepherd, Norman O'Neill, Thomas Duck & Thomas McElroy
Year-round (365/24) operation of the PEARL complex has been achieved with more than 25 operating instruments and associated data downloads and archiving. A particular strength of PEARL is the ability to collect data during the winter when there are few other measurements but the atmosphere undergoes important changes. This project encompassed eight sub-projects: Project 1: Validation of space-based cloud properties and precipitation characteristics. The measurements and studies at PEARL have enabled better understanding of current...

Sozio-oekonomisches Panel (SOEP), Daten der Jahre 1984-2010

Gert G. Wagner, Joachim R. Frick, Jürgen Schupp, Silke Anger, Marco Giesselmann, Jan Goebel, Markus Grabka, Elke Holst, Peter Krause, Martin Kroh, Elisabeth Liebau, Henning Lohmann, David Richter, Christian Schmitt, Daniel Schnitzlein & Juliana Werneburg
Das Sozio-oekonomische Panel (SOEP) ist eine repräsentative Wiederholungsbefragung, die bereits seit 1984 läuft. Im Auftrag des DIW Berlin werden jedes Jahr in Deutschland über 20.000 Personen aus rund 11.000 Haushalten von TNS Infratest Sozialforschung befragt. Die Daten geben Auskunft zu Fragen über Einkommen, Erwerbstätigkeit, Bildung oder Gesundheit. Weil jedes Jahr die gleichen Personen befragt werden, können langfristige soziale und gesellschaftliche Trends besonders gut verfolgt werden. Bereits im Juni 1990, also noch vor der Währungs-, Wirtschafts-...

Tandem Nucleophilic Addition/Fragmentation of Vinylogous Acyl Nonaflates for the Synthesis of Functionalized Alkynes, with New Mechanistic Insight

Paratchata Batsomboon, Brian Gold, Igor Alabugin & Gregory Dudley
Vinylogous acyl nonaflates, like the corresponding triflates, are subject to nucleophile-triggered fragmentation as part of a tandem process for generating functionalized alkynes. Advantages to the use of nonaflates in lieu of triflates include cost and stability. Computational analysis supports a postulated fragmentation mechanism involving a closed (cyclic) transition state with concerted extrusion of lithium sulfonate.

Cary Institute of Ecosystem Studies Hudson River Data: Kingston, New York.

Cary Institute Of Ecosystem Studies & David Fischer
This file contains METADATA, METHODS, and DATA USE POLICY information for selected data collected by the Cary Institute of Ecosystem Studies from the Hudson River. Many of these data have already been published (see our publication list at http://www.caryinstitute.org/IES_hudson_river_publications.asp).

PPS Arctic Canada (Present processes, Past changes, Spatio-temporal variability in the Arctic delimitation zone, Canada)

Karen Harper, Trevor Bell, Frank Berninger, Stephane Boudreau, Ryan Danby, Shawn Donaldson, Nancy Doubleday, Scott Green & Greg Henry
PPS Arctic Canada is a team of more than 170 researchers including 23 co-investigators, 3 post-doctoral fellows, 80 students from high school to graduate level and more than 70 northern residents and elders. Training and northern community involvement have been key components of our research project. Together with international researchers we developed common protocols and collected data during IPY to examine change at the tree line. Our multidisciplinary research team is developing methods for integrating...

Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from R/V Meteor research cruise along the WOCE Section AR12/AR24 (EXPOCODE 06MT19970515) in the North Atlantic Ocean from 1997-05-15 to 1997-06-08 (NCEI Accession 0162256)

Arne Körtzinger
NCEI Accession 0162256 includes Surface underway, chemical, meteorological and physical data collected from R/V Meteor research cruise along the WOCE SectionAR12/AR24 (EXPOCODE 06MT19970515) in the North Atlantic Ocean from 1997-05-15 to 1997-06-08. These data include measurements of mole fraction of CO2 in the equilibrator headspace (dry) at equilibrator temperature, mole fraction of CO2 measured in dry outside air, barometric pressure in the equilibrator headspace, water temperature in equilibrator, sea surface temperature, sea surface salinity and...

Furo[3,4-b]chromones, and not Pyrano[3,4-b]chromones, are Obtained by the Reaction of 3-Formylchromones with Isocyanides

Ana Neo, Leda Garrido, Jesús Díaz, Stefano Marcaccini & Carlos Marcos
The reaction of formylchromones with alkyl isocyanides was reinvestigated. In earlier reports from other research groups, two different structures were proposed for the products of this reaction. Herein, we provide unambiguous evidence that these products are chromenylmethylene furochromenones and not pyrano­chromones. Our structure assignment is based on X-ray diffraction analysis and two-dimensional NMR methods. The knowledge of the correct structure of these compounds is essential for the design of derivatives with potential applications as bioactive...

Water chemistry data for the River Frome, Dorset, UK, from 1965-2009

M. Bowes, H. Casey, J. Hilton, A. House & D. Leach
Data from weekly water quality monitoring of the River Frome at East Stoke, Dorset (National Grid Reference SY 867868). The dataset consists of nitrate, soluble reactive phosphorus, dissolved silicon, pH, alkalinity, potassium, sodium, calcium and magnesium concentrations for the entire 44-year monitoring period, with total phosphorus, total dissolved phosphorus, electrical conductivity, water temperature, chloride, sulphate and ammonium concentration data for periods within the monitoring period. Daily average river flow on the day of sampling (extracted...

Registration Year

  • 2012

Resource Types

  • Dataset

Data Centers

  • UC Santa Barbara
  • 4TU.Centre for Research Data
  • Geoforschungszentrum Potsdam
  • National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI)
  • GESIS Leibniz Institute for the Social Sciences
  • Digital Antiquity (TDAR)
  • UK Data Archive
  • figshare Academic Research System
  • Lawrence Berkeley National Laboratory (LBNL)
  • LDEO - Lamont-Doherty Earth Observatory, Columbia University
  • World Data Center for Climate
  • Oak Ridge National Laboratory - Atmospheric Radiation Measurement (ARM) Data Archive
  • Canadian Polar Data Network (CPDN)