777 research outputs found
GeneSet2miRNA: finding the signature of cooperative miRNA activities in the gene lists
GeneSet2miRNA is the first web-based tool which is able to identify whether or not a gene list has a signature of miRNA-regulatory activity. As input, GeneSet2miRNA accepts a list of genes. As output, a list of miRNA-regulatory models is provided. A miRNA-regulatory model is a group of miRNAs (single, pair, triplet or quadruplet) that is predicted to regulate a significant subset of genes from the submitted list. GeneSet2miRNA provides a user friendly dialog-driven web page submission available for several model organisms. GeneSet2miRNA is freely available at http://mips.helmholtz-muenchen.de/proj/gene2mir/
Mapping global extraction of abiotic and biotic raw materials
Reducing global environmental and social impacts related to final consumption is a significant societal as well
as scientific challenge, especially as production and consumption are increasingly geographically disconnected
via complex supply chains. Tracing the interlinkages between consumption and production as well as related
impacts in a spatially explicit way can contribute to overcoming this challenge. Currently, the spatial resolution
of global models of raw material extraction, trade and consumption is limited to the national level. Thus, they
fail to link specific supply chains to the actual geographical location of production and related impacts. Detailed
global spatiotemporal datasets would allow tracing the heterogeneity of environmental and social conditions within
producing countries. In this contribution, we present our preliminary results mapping global biotic and abiotic
raw materials extraction in 5-arc-minutes (around 10 km x 10 km at the equator) grid cell level, starting from
the year 2000. Our datasets will include around 60 different raw materials, covering crops, fishery, fossil energy
resources, metal ores and non-metallic minerals. In the future, our database will also include spatially explicit data
on environmental and social impacts related to the extraction of these raw materials. The new database, methods,
and algorithms will be openly available to the research community and the wider public, supporting open and
reproducible science. Our novel database will allow developing new methods to assess the interlinkages between
consumption and various environmental and social impacts related to extraction on a grid cell level. It can boost
the spatially explicit assessments of supply chains and consumption patterns in both developed and developing
countries, which is crucial for the design of international policy instruments to achieve sustainable production and
consumption patterns
A Unique LnIII{[3.3.1]GaIII Metallacryptate} Series That Possesses Properties of Slow Magnetic Relaxation and Visible/NearâInfrared Luminescence
A new family of [3.3.1] metallacryptates with the general composition [LnGa6(H2shi)(Hshi)(shi)7(C5H5N)] (Lnâ1; shi3â=salicylhydroximate; Ln = Pr, Nd, SmâYb) has been synthesized and characterized. Lnâ1 display both interesting magnetic and luminescent properties. Smâ1 has sharp emission bands in the visible and the nearâinfrared (NIR) regions with quantum yield values (QSmL) of 1.64(9) and 5.5(2).10â2â%, respectively. Tbâ1 exhibits a weak green emission (QTbL=1.89(3).10â1â%) while Prâ1, Ndâ1, Hoâ1, Erâ1, and Ybâ1 possess emission bands in the NIR range with QPrL=3.7(2).10â3â%, QNdL=1.71(5).10â1â%, QHoL=1.1(2).10â3â%, QErL=7.1(2).10â3â% and QYbL=0.65(3)â%. Ndâ1, Dyâ1, and Ybâ1 display slow magnetization relaxation in an applied field, where only Dyâ1 has been observed to follow an Orbach process (Ueff=12.7â
K). The combination of NIR emission with magnetic properties makes Ndâ1 and Ybâ1 attractive candidates as smart materials addressable in two manners.A twoâforâone scaffold: A new LnIIIâencapsulating metallamacrocyclic scaffold was synthesized and structurally determined to resemble cryptands. This metallacryptand can bind a wide variety of LnIII ions of different natures and demonstrates the ability to sensitize their characteristic emissions in the visible and/or nearâinfrared. Slow magnetic relaxation was also observed for selected LnIII.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/145255/1/chem201801355.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/145255/2/chem201801355_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/145255/3/chem201801355-sup-0001-misc_information.pd
Magnetic moments of Coulomb excited states for radioactive beams of Te and Xe isotopes at REX-ISOLDE
First identification of large electric monopole strength in well-deformed rare earth nuclei
Excited states in the well-deformed rare earth isotopes Sm and
Er were populated via ``safe'' Coulomb excitation at the Munich MLL
Tandem accelerator. Conversion electrons were registered in a cooled Si(Li)
detector in conjunction with a magnetic transport and filter system, the
Mini-Orange spectrometer. For the first excited state in Sm at
1099 keV a large value of the monopole strength for the transition to the
ground state of could be extracted. This confirms the interpretation of the lowest
excited state in Sm as the collective -vibrational
excitation of the ground state. In Er the measured large electric
monopole strength of clearly identifies the state at 1934 keV to be the
-vibrational excitation of the ground state.Comment: submitted to Physics Letters
Study of 2 beta-decay of Mo-100 and Se-82 using the NEMO3 detector
After analysis of 5797 h of data from the detector NEMO3, new limits on neutrinoless double beta decay of Mo-100 (T-1/2 > 3.1 x 10(23) y, 90% CL) and Se-82 (T-1/2 > 1.4 x 10(23) y, 90% CL) have been obtained. The corresponding limits on the effective majorana neutrino mass are: 1.4 x 10(22) y (90% CL) for Mo-100 and T-1/2 > 1.2 x 10(22) y (90% CL) for Se-82. Corresponding bounds on the Majoron-neutrino coupling constant are < (0.5-0.9) x 10(- 4) and <(0.7-1.6) x 10(- 4). Two-neutrino 2beta-decay half-lives have been measured with a high accuracy, (T1/2Mo)-Mo-100 = [7.68 +/- 0.02(stat) +/- 0.54(syst)] x 10(18) y and (T1/2Se)-Se-82 = [10.3 +/- 0.3(stat) +/- 0.7(syst)] x 10(19) y. (C) 2004 MAIK "Nauka/Interperiodica"
Measurement of double beta decay of Âčâ°â°Mo to excited states in the NEMO 3 experiment
The double beta decay of Âčâ°â°Mo to the 0_{1}^{+} and 2_{1}^{+} excited states of Âčâ°â°Ru is studied using the NEMO 3 data. After the analysis of 8024 h of data the half-life for the two-neutrino double beta decay of Âčâ°â°Mo to the excited 0_{1}^{+} state is measured to be T_{1/2}^{2v} = [5.7_{-0.9}^{+1.3} (stat.) ± 0.8 (syst.)] x 10ÂČâ° y. The signal-to-background ratio is equal to 3. Information about energy and angular distributions of emitted electrons is also obtained. No evidence for neutrinoless double beta decay to the excited 0_{1}^{+} state has been found. The corresponding half-life limit is T_{1/2}^{0v} (0âșâ0_{1}^{+}) > 8.9 x 10ÂČÂČ y (at 90% C.L.). The search for the double beta decay to the 2_{1}^{+} excited state has allowed the determination of limits on the half-life for the two neutrino mode T_{1/2}^{0v} (0âșâ2_{1}^{+}) > 1.1 x 10ÂČÂč y (at 90% C.L.) and for the neutrinoless mode T_{1/2}^{0v} (0âșâ2_{1}^{+}) > 1.6 x 10ÂČÂł y (at 90% C.L.)
Low-energy Coulomb excitation of Fe and Mn following in-beam decay of Mn
Sub-barrier Coulomb-excitation was performed on a mixed beam of Mn and
Fe, following in-trap decay of Mn at REX-ISOLDE,
CERN. The trapping and charge breeding times were varied in order to alter the
composition of the beam, which was measured by means of an ionisation chamber
at the zero-angle position of the Miniball array. A new transition was observed
at 418~keV, which has been tentatively associated to a
transition. This fixes the relative
positions of the -decaying and states in Mn for
the first time. Population of the state was observed in Fe
and the cross-section determined by normalisation to the Ag target
excitation, confirming the value measured in recoil-distance lifetime
experiments.Comment: 9 pages, 10 figure
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