scholarly journals Refugees and the Borders of Europe: A Minor Contribution

2015 ◽  
Vol 27 (1) ◽  
pp. 1-4
Author(s):  
Elena Loizidou
Keyword(s):  
Minor Contribution ◽  
A Minor

scholarly journals The Influence of La and Ce on Microstructure and Mechanical Properties of an Al-Si-Cu-Mg-Fe Alloy at High Temperature

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 384
Author(s):  
Andong Du ◽  
Anders E. W. Jarfors ◽  
Jinchuan Zheng ◽  
Kaikun Wang ◽  
Gegang Yu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Temperature ◽  
Intermetallic Phases ◽  
High Temperature Strength ◽  
Thermal Expansion Mismatch ◽  
Strengthening Mechanisms ◽  
High Temperature Mechanical Properties ◽  
Minor Contribution ◽  
A Minor

The effect of lanthanum (La)+cerium (Ce) addition on the high-temperature strength of an aluminum (Al)–silicon (Si)–copper (Cu)–magnesium (Mg)–iron (Fe)–manganese (Mn) alloy was investigated. A great number of plate-like intermetallics, Al11(Ce, La)3- and blocky α-Al15(Fe, Mn)3Si2-precipitates, were observed. The results showed that the high-temperature mechanical properties depended strongly on the amount and morphology of the intermetallic phases formed. The precipitated tiny Al11(Ce, La)3 and α-Al15(Fe, Mn)3Si2 both contributed to the high-temperature mechanical properties, especially at 300 °C and 400 °C. The formation of coarse plate-like Al11(Ce, La)3, at the highest (Ce-La) additions, reduced the mechanical properties at (≤300) ℃ and improved the properties at 400 ℃. Analysis of the strengthening mechanisms revealed that the load-bearing mechanism was the main contributing mechanism with no contribution from thermal-expansion mismatch effects. Strain hardening had a minor contribution to the tensile strength at high-temperature.

scholarly journals Cleavage of DNA and RNA by PLD3 and PLD4 limits autoinflammatory triggering by multiple sensors

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Amanda L. Gavin ◽  
Deli Huang ◽  
Tanya R. Blane ◽  
Therese C. Thinnes ◽  
Yusuke Murakami ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Inflammatory Diseases ◽  
Type I ◽  
Multiple Sensors ◽  
Dna And Rna ◽  
Elevated Type ◽  
Minor Contribution ◽  
Ifn Γ ◽  
A Minor ◽  
Rna And Dna

AbstractPhospholipase D3 (PLD3) and PLD4 polymorphisms have been associated with several important inflammatory diseases. Here, we show that PLD3 and PLD4 digest ssRNA in addition to ssDNA as reported previously. Moreover, Pld3−/−Pld4−/− mice accumulate small ssRNAs and develop spontaneous fatal hemophagocytic lymphohistiocytosis (HLH) characterized by inflammatory liver damage and overproduction of Interferon (IFN)-γ. Pathology is rescued in Unc93b13d/3dPld3−/−Pld4−/− mice, which lack all endosomal TLR signaling; genetic codeficiency or antibody blockade of TLR9 or TLR7 ameliorates disease less effectively, suggesting that both RNA and DNA sensing by TLRs contributes to inflammation. IFN-γ made a minor contribution to pathology. Elevated type I IFN and some other remaining perturbations in Unc93b13d/3dPld3−/−Pld4−/− mice requires STING (Tmem173). Our results show that PLD3 and PLD4 regulate both endosomal TLR and cytoplasmic/STING nucleic acid sensing pathways and have implications for the treatment of nucleic acid-driven inflammatory disease.

Chemistry of SiO2 Plasma Deposition

1990 ◽  
Vol 204 ◽  
Author(s):  
Donald L. Smith ◽  
Andrew S. Alimonda ◽  
Tzu-Chin Chuang
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Plasma Deposition ◽  
Electron Trapping ◽  
Electrical Characteristics ◽  
Rf Power ◽  
Film Analysis ◽  
Minor Contribution ◽  
Thermal Oxide ◽  
A Minor

ABSTRACTThe chemistry of SiO2 deposition from N20-SiH4 plasma was studied by line-ofsight mass spectrometry coupled with film analysis. If rf power and N2O flow are sufficient, more than enough O atoms are available to convert all of the SiH4 to SiO2, and good electrical characteristics (IV and breakdown) are then obtained with or without He dilution. Gas-phase SimHn(OH)p species make a minor contribution to the deposition and may be the source of the OH in the film. Both [OH] and electron trapping are much larger than for thermal oxide, with or without He dilution.

The formation of ferromanganese nodules in the southwest Indian Ocean; an abiotic process

2014 ◽  
Vol 78 (4) ◽  
pp. 941-955
Author(s):  
B. E. Van Dongen ◽  
N. J. Ashton ◽  
R. A. D. Pattrick
Keyword(s):  
Organic Matter ◽  
Indian Ocean ◽  
Depositional Environments ◽  
Higher Plant ◽  
Southwest Indian Ocean ◽  
Ferromanganese Nodules ◽  
Naturally Occurring ◽  
Minor Contribution ◽  
Geochemical Analyses ◽  
A Minor

AbstractFerromanganese nodules have been recognized widely as potentially important resources for strategic metals. However it remains unclear if the formation of these nodules is purely an abiotic process or if microorganisms are involved in their formation. To determine the microbial contributions, detailed organic geochemical analyses were performed on ferromanganese nodules collected from across the southwest Indian Ocean. These analyses reveal the presence of specific terrestrial, marine and petroleum derived biomarkers, consistent with formation in a marine setting with a substantial influx of terrestrially derived (higher plant detritus) and naturally occurring petroleum-related organic matter. In contrast, only trace amounts of general bacterial biomarkers, commonly present in these types of depositional environments, were present. This indicates that the formation of these ferromanganese nodules is predominantly an abiotic process although a minor contribution from microbial mediated processes to the growth of these nodules cannot be completely ruled out.

scholarly journals The metabolism of neuropeptides. Hydrolysis of peptides by the phosphoramidon-insensitive rat kidney enzyme ‘endopeptidase-2’ and by rat microvillar membranes

1988 ◽  
Vol 255 (1) ◽  
pp. 45-51 ◽  
Author(s):  
S L Stephenson ◽  
A J Kenny
Keyword(s):  
Substance P ◽  
Rat Kidney ◽  
Peptide Fragments ◽  
Hydrophobic Amino Acid ◽  
Prolonged Incubation ◽  
Minor Contribution ◽  
Kidney Enzyme ◽  
Hydrophobic Amino Acid Residue ◽  
A Minor ◽  
Hydrolysis Of

Endopeptidase-2, the second endopeptidase in rat kidney brush border [Kenny & Ingram (1987) Biochem. J. 245, 515-524] has been further characterized in regard to its specificity and its contribution to the hydrolysis of peptides by microvillar membrane preparations. The peptide products were identified, after incubating luliberin, substance P, bradykinin and angiotensins I, II and III with the purified enzyme. The bonds hydrolysed were those involving a hydrophobic amino acid residue, but this residue could be located at either the P1 or P1′ site. Luliberin was hydrolysed faster than other peptides tested, followed by substance P and bradykinin. Human alpha-atrial natriuretic peptide and the angiotensins were only slowly attacked. Oxytocin and [Arg8]vasopressin were not hydrolysed. No peptide fragments were detected on prolonged incubation with insulin, cytochrome c, ovalbumin and serum albumin. In comparison with pig endopeptidase-24.11 the rates for the susceptible peptides were, with the exception of luliberin, much lower for endopeptidase-2. Indeed, for bradykinin and substance P the ratio kcat./Km was two orders of magnitude lower. Since both endopeptidases are present in rat kidney microvilli, an assessment was made of the relative contributions to the hydrolysis of luliberin, bradykinin and substance P. Only for the first named was endopeptidase-2 the dominant enzyme; for bradykinin it made an equal, and for substance P a minor, contribution.

Chemical Shift. VII. The Long-range Shielding Effects of the Cyano Group

1972 ◽  
Vol 50 (14) ◽  
pp. 2351-2356 ◽  
Author(s):  
J. W. ApSimon ◽  
H. Beierbeck ◽  
D. K. Todd
Keyword(s):  
Chemical Shift ◽  
Long Range ◽  
Field Effect ◽  
Cyano Group ◽  
Electric Field Effect ◽  
Minor Contribution ◽  
Anisotropy Effect ◽  
A Minor ◽  
Good Agreement ◽  
Shielding Effects

Using the methods described in parts I–VI of this series, we have examined the long-range shielding effects of the cyano group upon the C-18 and -19 methyl protons in several cyano-steroids and the ring protons in 2-endo- and 2-exo-cyanonorbornenes.It was found that the most important shielding mechanism of the cyano group is its electric field effect, with the magnetic anisotropy effect making at most a minor contribution to the screening. However, only in the cases of the cyano-steroids was good agreement obtained between the calculated and the experimental shifts.

Relation between Growth Precursors and Film Properties for Plasma Deposition of a-Si:H at Rates up to 100 Å/s

2000 ◽  
Vol 609 ◽  
Author(s):  
W.M.M. Kessels ◽  
A.H.M. Smets ◽  
J.P.M. Hoefnagels ◽  
M.G.H. Boogaarts ◽  
D.C. Schram ◽  
...  
Keyword(s):  
Substrate Temperature ◽  
Deposition Rate ◽  
Surface Reaction ◽  
Film Growth ◽  
Plasma Deposition ◽  
Reaction Probability ◽  
Film Properties ◽  
Deposition Rates ◽  
Minor Contribution ◽  
A Minor

ABSTRACTFrom investigations on the SiH3 and SiH radical density and the surface reaction probability in a remote Ar-H2-SiH4 plasma, it is unambiguously demonstrated that the a-Si:H film quality improves significantly with increasing contribution of SiH3 and decreasing contribution of very reactive (poly)silane radicals. Device quality a-Si:H is obtained at deposition rates up to 100 Å/s for conditions where film growth is governed by SiH3 (contribution ∼90%) and where SiH has only a minor contribution (∼2%). Furthermore, for SiH3 dominated film growth the effect of the deposition rate on the a-Si:H film properties with respect to the substrate temperature is discussed.

Sign in / Sign up

Export Citation Format

Share Document