Concentrations of Fe, Mn, Cu, Zn, Co, Ni, Pb, Cd, B, and SiO2 in interstitial waters from bottom sediments of the Atlantis II and Discovery Deeps, Red Sea rift zone

Chemical analyzes show that interstitial waters from ore-bearing bottom sediments of the Atlantis II and Discovery Deeps are enriched in Fe, Mn, Cu, Ni, Co, Zn, Pb, and Cd compared to sea water. Enrichment factors of these trace elements in the interstitial waters of the Atlantis II Deep relative to the sea water vary within the following ranges: for Fe from 100 to 7000, for Mn from 19047 to 32738, for Zn from 500 to 1600, for Pb from 78333 to 190000, for Cu from 107 to 654. Comparison of average weighted concentrations of Fe, Mn, Zn, Pb, Cu, Ni in the bottom sediments and the interstitial waters of the Atlantis II Deep indicates common regularities and good relationship in distribution of these elements along sediment cores. Differences in concentrations and distribution of the studied trace elements in the interstitial waters of the Atlantis II and Discovery Deeps result from different chemical compositions of hydrothermal fluids entering these deeps.

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Marcas tip. de Simon Vincent en port. y en [et]8v (Silvestre. Marques, 266)

Practica iudiciaria / Ia[cobi] de bel[lo] visu sole[m]nis [et] iudicibus o[mn]ibus, aduocatisq[ue] [et] practicis cu[n]ctis nedu[m] vtilis[s]immo p[er]necessaria Practica Iudiciaria in materijs criminalib[us] ... Iacobi de bellouisu ; cu[m] additionib[us] celeberrimi d[omi]ni Honorati Pugeti ... ; Ad vngue[m] quoq[ue] p[er] Celsum Hugone[m] dissutu[m] …

Hojas imp. por ambas caras

Practica Baldi 1525 : perutilis ac vere aurea practica iuris vtriusq[ue] monarche ac luminis d[omi]ni Baldi de Vbaldis de perusio no[n] solum aduocatis, veru[m] procuratoribus, [et] alijs practica[n]tibus summe necessaria, cu[m] additionibus domini Anton

Pie de imprenta tomado del colofón

Metal-complex ionosilicas: Cationic mesoporus silica with Ni(II) and Cu(II) complexes in their framework

Metal-complex ionosilicas with cationic complexes into the mesoporous silica framework were prepared using anionic surfactants. The electrostatic interaction between the anionic surfactant and the cationic metal complexes incorporated in the silica framework allows for the fine tuning of the mesoporous structure. The gentle procedure of synthesis developed and mild ion-exchange extraction of the surfactant, allowed a cleaner route for the immobilization of homogeneous cationic catalysts in mesoporous silica, while protecting the structural and chemical integrity of the metal complexes.

Improved of Cr-Ni-Mo iron base alloys by vacuum melting and casting. Final report.

"Bureau of Ships, Department of the Navy. Contract no. NObs-77019, Index Number NS-013-119."

Index libro[rum] in hoc volumi[n]e co[n]te[n]to[rum] domini Symphoriani Champerij physici lugdun[ensi] : Libelli duo, primus De medicine claris scriptoribus in quinq[ue] partitus tractatus , secundus De legu[m] diuinaru[m] conditoribus una cu[m] impugnatione fecte machometice qua[m] arabes alchoranu[m] vocant ... ; Dyalogus d[omi]ni Symphoriani Cha[m]perij [et] Sebastiani Copini mollissonie[m]sis in legem machometicam ; Eiusdem d[omi]ni Symphoriani De corporu[m] animorumque morbis eorumdeque remediis opusculu[m] in duos partitu[m] libellos : primus introductiuus est in practica[m] Galeni, secundus Egritudinu[m] animoru[m] curatiuus ; Eua[n]gelice christianeq[ue] religionis excriptis ge[n]tiliu[m] [et] poetaru[m] [et] philosopho[rum] validissimis argume[n]tis co[m]probatio ; Eiusde[m] d[omi]ni Symphoriani Aphorismi siue collectiones medicinales ... Alexa[n]dri aphrodisei greci de febribus ; Opera parua Hippocratis nouiter de greco in latinum traducta lib. vii ; Epistole queda[m] ad ip[so]m[et] ... Symphorianu[m] cha[m]perium.

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The effect of iron on liquid film migration and sintering of an Al-Cu-Mg alloy

Analytical transmission electron microscopy indicates that liquid film migration occurs during sintering of an Al-Cu-Mg alloy, that intragranular liquid pools develop from migrating films and that iron segregates to these pools. It is suggested that a high localised iron concentration retards the liquid film migration rate by reducing the coherency strain in the retreating grain, causing a region of the film to detach from the boundary, thus forming an intragranular pool in the advancing grain. Alloys with low iron levels develop few intragranular pools and have high sintered densities. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

Strength-ductility behaviour of Al-Si-Cu-Mg casting alloys in T6 temper

A comparative study of the mechanical properties of 20 experimental alloys has been carried out. The effect of different contents of Si, Cu, Mg, Fe and Mn, as well as solidification rate, has been assessed using a strength-ductility chart and a quality index-strength chart developed for the alloys. The charts show that the strength generally increases and the ductility decreases with an increasing content of Cu and Mg. Increased Fe (at Fe/Mn ratio 0.5) dramatically lowers the ductility and strength of low Si alloys. Increased Si content generally increases the strength and the ductility. The increase in ductility with increased Si is particularly significant when the Fe content is high. The charts are used to show that the cracking of second phase particles imposes a limit to the maximum achievable strength by limiting the ductility of strong alloys. The (Cu + Mg) content (at.%), which determines the precipitation strengthening and the volume fraction of Cu-rich and Mg-rich intermetallics, can be used to select the alloys for given strength and ductility, provided the Fe content stays below the Si-dependent critical level for the formation of pre-eutectic alpha-phase particles or beta-phase plates.