ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Cambridge University Press
  • 2010-2014  (1,663)
  • 1935-1939
  • 1925-1929
  • 2010  (1,663)
Collection
Years
  • 2010-2014  (1,663)
  • 1935-1939
  • 1925-1929
Year
  • 1
    Publication Date: 2010-01-01
    Description: We describe progress in developing a novel miniaturized laser-heated “microfurnace” aimed at preparing ultra-small (∼5 μg) graphite samples from CO2 (Smith et al. 2006, 2007, 2010). Recent effort has focused on automation of the process using a LabVIEW interface, which has permitted feedback control of the catalyst temperature as the reaction proceeds and the logging of reaction parameters. We trialed a number of different pure iron catalysts as well as Fe2O3 (which is reduced in situ to iron) and discuss the reaction rates. We studied the graphite morphology by scanning electron microscopy (SEM) and found there is a marked difference in graphite morphology with catalyst type. We assessed how each catalyst performs in the cesium sputter ion source of the ANTARES Accelerator Mass Spectrometry (AMS) facility. We utilized a quadrupole mass spectrometer to study the gas composition during the reaction, in order to better understand the underlying chemical reactions for such small samples and to better estimate the overall efficiency of the process. Results show that all CO2 is converted to CO by reduction on the iron catalyst within a few minutes of applying laser power. The reaction pressure stabilizes after 40 min; however, some CO is not converted to graphite. The cold trap temperature of –80 ° is effective at trapping H2O, so there is little CH4 production.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2010-01-01
    Description: A new and unique radiocarbon accelerator mass spectrometry (AMS) facility has been constructed at the Woods Hole Oceanographic Institution. The defining characteristic of the new system is its large-gap optical elements that provide a larger-than-standard beam acceptance. Such a system is ideally suited for high-throughput, high-precision measurements of 14C. Details and performance of the new system are presented.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2010-01-01
    Description: We measured the radiocarbon ages of 165 single-year tree rings from a Japanese Choukai Jindai cedar using accelerator mass spectrometry (AMS). By wiggle-matching the Choukai_AMS data set to the IntCal04 calibration data using OxCal v 3.10 and using the variation of the correlation coefficients between the Choukai_AMS and IntCal04 data sets, we precisely re-estimated that the 321 Choukai Jindai cedar tree rings range from 780 to 460 cal BC with an accuracy of 8 yr. The Choukai_AMS data set is older than the 3 raw data sets of European tree rings that comprise IntCal04. The Belfast and Seattle data sets are younger by −21.3 ± 5.5 and −22.7 ± 5.6 14C yr, respectively. The Choukai Jindai cedar is ∼22 14C yr older than the European tree rings, which is equivalent to an offset of −2.8‰ in 14C. In addition, the Choukai_AMS data set correlates well with the Belfast and Seattle data sets, with correlation coefficients of 0.89 and 0.68, respectively, between the temporal profiles. Hence, the temporal profile of the Choukai 14C ages shows a global variation.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2010-01-01
    Description: The article reports the first radiocarbon dating of a live African baobab (Adansonia digitata L.), by investigating wood samples collected from 2 inner cavities of the very large 2-stemmed Platland tree of South Africa. Some 16 segments extracted from determined positions of the samples, which correspond to a depth of up to 15–20 cm in the wood, were processed and analyzed by accelerator mass spectrometry (AMS). Calibrated ages of segments are not correlated with their positions in the stems of the tree. Dating results indicate that the segments originate from new growth layers, with a thickness of several centimeters, which cover the original old wood. Four new growth layers were dated before the reference year AD 1950 and 2 layers were dated post-AD 1950, in the post-bomb period. Formation of these layers was triggered by major damage inside the cavities. Fire episodes are the only possible explanation for such successive major wounds over large areas or over the entire area of the inner cavities of the Platland tree, able to trigger regrowth.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2010-01-01
    Description: Three factors—contamination, a dietary reservoir effect, and a regional δ14C anomaly—are considered as possible contributing explanations for an almost 2-century offset between the historically documented age of 612 BCE and the calibrated ages of 9 14C determinations obtained on 3 human skeletons directly associated stratigraphically with an archaeologically—and historically—defined 612 BCE event at the ancient site of Nineveh in northern Mesopotamia (Iraq). We note that on the order of a 1% (∼80 yr) offset caused by one or a combination of these 3 factors, or other as yet unidentified additional factor(s), would be sufficient to move the average measured 14C age of these bone samples within the major “warp” in the 14C timescale during the mid-1st millennium BCE. We provide what we believe to be sufficient evidence that contamination is not a major factor in the case of these bone samples. At this time, we lack appropriate data to determine with sufficient rigor the degree to which a dietary reservoir effect may be contributing to the offset. At present, a posited regional δ14C anomaly does not appear to be supported on the basis of data from several other localities in the Near East of similar age. One purpose of presenting this data set is to solicit comparisons with 14C values obtained on samples from additional, historically well-documented, known-age archaeological contexts for this time period in this and adjacent regions.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2010-10-01
    Description: This paper seeks to explain the success of two NGOs in creating standards for calculating and reporting greenhouse gas (GHG) emissions at the level of an entire company. These emissions accounting standards, called the Greenhouse Gas Protocol, have been widely adopted by multinational firms, emissions reporting registries, and even an emissions trading scheme. The paper traces the widespread adoption of the standards, and then offers an explanation for this successful instance of private regulation. It presents a supply and demand model of private entrepreneurial authority—where private actors project authority without delegation by states. The two NGOs were successful rule-makers because they were able meet a demand for three benefits to potential users of the standard: reduced transaction costs, first-mover advantage, and an opportunity to burnish their reputation as environmental leaders. The paper also explains the supply of private authority—that is, why we see entrepreneurial authority rather than delegation by states. The disagreement among developed countries on the appropriate role for emissions trading in the climate regime delayed action on developing firm-level accounting methodologies. Moreover, the relative weakness of the focal institution in the climate regime—the climate change Secretariat—meant that there was no obvious international organization to take up the task of creating new measurement tools.
    Print ISSN: 1369-5258
    Electronic ISSN: 1469-3569
    Topics: Political Science , Economics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2010-08-01
    Description: The globalization of production and finance is responsible for much of the variation in political contestation over exchange rates since the end of Bretton Woods. On the one hand, globalization increases the salience of the policy decisions that affect exchange rates, as more firms and their workers engage more in international trade and compete more against imports. On the other hand, globalization offers firms a myriad of opportunities to manage their exchange rate risk, through operational and financial hedging. But hedging is available to only certain types of economic actors and in certain situations of exchange rate risk. In this way, globalization has redrawn traditional political cleavages on exchange rates. This argument is tested with an original survey of US firms, labor unions, and trade associations on their preferences and political activity on exchange rate policy.
    Print ISSN: 1369-5258
    Electronic ISSN: 1469-3569
    Topics: Political Science , Economics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2010-04-01
    Description: The paper examines the use of free trade agreements (FTAs) by Japanese firms. The FTAs analyzed include Japan's FTAs with Mexico, Malaysia and Chile. Based on 1,688 responses to a questionnaire survey conducted in 2008, the study finds that the utilization rate of FTAs ranges between 32.9% (Japan-Mexico FTA) and 12.2% (Japan-Malaysia FTA). The survey results and the statistical analysis of the determinants of the use of FTAs reveal obstacles to using FTAs that include difficulty in obtaining the certificate of origin that is required to use the FTA, lack of knowledge of FTAs, and the small FTA tariff preference that is the difference between the most-favored-nation (MFN) and FTA tariff rates.
    Print ISSN: 1369-5258
    Electronic ISSN: 1469-3569
    Topics: Political Science , Economics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2010-10-01
    Description: In this concluding essay to the special issue on Private Regulation in the Global Economy, I review the main findings, focused on the answers that the papers in this issue jointly suggest to the three sets of core questions noted in the introductory essay: (1) How do private bodies attain regulatory authority? Why do private regulators provide governance and why do the targets of these rules comply? (2) Who governs? Who are the key actors in private regulation and what are their motivations? (3) What is the effect of the rise of private regulation on public regulatory authority and capacity? I then identify and discuss several key issues to develop a research agenda for what I call “global private politics.”
    Print ISSN: 1369-5258
    Electronic ISSN: 1469-3569
    Topics: Political Science , Economics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2010-12-01
    Description: This contribution is a reaction to the striking fact that the political aspect of CSR has remained largely hidden in most of the scientific and practice-oriented management literature. This work intends to illuminate the political dimension of CSR in that the changing stance of the European Commission toward CSR between 2001 and 2006 is analyzed and interpreted as a result of political processes within an “issue arena”. For this case study written documents from the most important actors are used (EU Commission, EU Parliament, the Council, advocacy groups and lobbies for industry and civil society CSR platforms) as well as interviews with high ranking representatives of these institutions (conducted in the spring of 2008).
    Print ISSN: 1369-5258
    Electronic ISSN: 1469-3569
    Topics: Political Science , Economics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...