Magnetic nanoparticles supported oxime palladacycle as a highly efficient and separable catalyst for room temperature Suzuki–Miyaura coupling reaction in aqueous media

A novel magnetic nanoparticle-supported oxime palladacycle catalyst was successfully prepared and characterized. The magnetically recoverable catalyst was evaluated in the room temperature Suzuki–Miyaura cross-coupling reaction of aryl iodides and bromides in aqueous media. The catalyst was shown to be highly active under phosphine-free and low Pd loading (0.3 mol%) conditions. The catalyst could be easily separated from the reaction mixture using an external magnet and reused for six consecutive runs without significant loss of activity.

Light capsules shaped by curvilinear meta-surfaces

We propose a simple yet efficient method for generating in-plane hollow beams with a nearly full circular light shell without the contribution of backward propagating waves. The method relies on modulating the phase in the near field of a centrosymmetric optical wave front, such as that from a high-numerical-aperture focused wave field. We illustrate how beam acceleration may be carried out by using an ultranarrow non-flat meta-surface formed by engineered plasmonic nanoslits. A mirror-symmetric, with respect to the optical axis, circular caustic surface is numerically demonstrated that can be used as an optical bottle.

Multi-Element Analysis of Spanish Date Palm (Phoenix dactylifera L.) by Inductively Coupled Plasma-Based Techniques. Discrimination Using Multivariate Statistical Analysis

The elemental analysis of Spanish palm dates by inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry is reported for the first time. To complete the information about the mineral composition of the samples, C, H, and N are determined by elemental analysis. Dates from Israel, Tunisia, Saudi Arabia, Algeria and Iran have also been analyzed. The elemental composition have been used in multivariate statistical analysis to discriminate the dates according to its geographical origin. A total of 23 elements (As, Ba, C, Ca, Cd, Co, Cr, Cu, Fe, H, In, K, Li, Mg, Mn, N, Na, Ni, Pb, Se, Sr, V, and Zn) at concentrations from major to ultra-trace levels have been determined in 13 date samples (flesh and seeds). A careful inspection of the results indicate that Spanish samples show higher concentrations of Cd, Co, Cr, and Ni than the remaining ones. Multivariate statistical analysis of the obtained results, both in flesh and seed, indicate that the proposed approach can be successfully applied to discriminate the Spanish date samples from the rest of the samples tested.

Silica Microparticles Supported Gold and Copper Ferrite Nanoparticles: A Magnetically Recyclable Bimetallic Catalyst for Sonogashira Reaction

Novel silica supported gold and copper ferrite nanoparticles (NPs) have been synthesized, characterized and used as a separable dual catalyst in Sonogashira type reaction. These Au.CuFe2O4@Silica NPs show a high efficiency as catalyst in the alkynylation not only of aryl iodides but also aryl bromides. By using only 0.5 mol% loading and t-BuOK as base in N,N-dimethylacetamide as solvent, aryl iodides react at 115 ºC in 1 d, whereas for aryl bromides the cross-coupling takes place at 130 ºC in 2 d. The catalyst can be successfully recycled using an external magnet for four consecutive runs.

Gold Nanoparticles Supported on Polyacrylamide Containing a Phosphorus Ligand as an Efficient Heterogeneous Catalyst for Three-Component Synthesis of Propargylamines in Water

Gold nanoparticles supported on a polyacrylamide containing a phosphinite ligand have been synthesized and characterized using different techniques such as TEM, SEM, EDX, XPS, and solid UV analyses. The new material was successfully applied as a heterogeneous catalyst for the three-component A3 coupling of amines, aldehydes, and alkynes to give propargylamines. Reactions are performed in neat water at 80 °C with only 0.05 mol% catalyst loading. The heterogeneous catalyst is recyclable during seven consecutive runs with small decrease in activity.

Red Sea Region, North Africa, ca. 1730 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Carte de l'Egypte, de la Nubie, de l'Abyssinie &c., par Guillaume de l'Isle, de l'Academie Royal a Paris. It was published by Chez Henri de Leth, a l'enseigne du Pecheur ca. 1730. Scale [ca. 1:9,250,000]. Covers the Red Sea region, North Africa including portions of the Middle East and Europe. Map in French.The image inside the map neatline is georeferenced to the surface of the earth and fit to the Africa Sinusoidal projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, major roads, cities and other human settlements, territorial boundaries, shoreline features, and more. Relief shown pictorially. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Indian Ocean Region, ca. 1690 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Nova tabula Indiae Orientalis. It was published by Carolus Allard excudit, between 1690 and 1710. Scale [ca. 1:5,500,000]. Covers the Indian Ocean Region. Map in Latin. The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Miller Cylindrical projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, roads, cities and other human settlements, territorial boundaries, shoreline features, and more. Relief shown pictorially.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

India & South Asia, 1773 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: The East Indies including more particularly the British Dominions on the Continent of India, by John Blair ; T. Kitchin, senr. sculpsit. It was published by J. Blair in 1773. Scale [ca.1:7,000,000]. Covers India, Sri Lanka, Bangladesh, Bhutan, Nepal, and portions of Maldives, Iran, Afghanistan, Pakistan, China, Burma, and Indonesia. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Kalianpur 1975 India Zone III projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial and administrative boundaries, shoreline features, and more. Relief shown pictorially.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Middle East and South Asia, 1903 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: A map of the countries between Constantinople and Calcutta : including Turkey in Asia, Persia, Afghanistan and Turkestan. It was published by Edward Stanford in 1903. Scale 1:6,969,600. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Asia North Lambert Conformal Conic coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial boundaries, roads, railroads, ferry routes, shoreline features, and more. Relief shown by hachures and spot heights. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Caucasus, 1802 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Charte der Laender am Caucasus nach den besten vorhandenen, Charten, Reisen und astronomischen Orstbestimugen gezeichnet von I. C. M. Reinecke. It was published by Im Verlage des Industrie Comptoirs in 1802. Scale [ca. 1:2,100,000]. Covers the Caucasus. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to a modified 'Europe Lambert Conformal Conic' projection with a central meridian of 44 degrees East projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial and provincial boundaries, shoreline features, and more. Relief shown by hachures. Includes note. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection as part of the Open Collections Program at Harvard University project: Islamic Heritage Project. Maps selected for the project represent a range of regions, originators, ground condition dates, scales, and purposes. The Islamic Heritage Project consists of over 100,000 digitized pages from Harvard's collections of Islamic manuscripts and published materials. Supported by Prince Alwaleed Bin Talal and developed in association with the Prince Alwaleed Bin Talal Islamic Studies Program at Harvard University.

Caucasus, 1854 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Karte der Kaukasus-Länder und der angränzenden Türkischen und Persischen Provinzen Armenien, Kurdistan, und Azerbeidjan, bearbeitet und gezeichnet von H. Kiepert. It was published by Bei Dietrich Reimer in 1854. Scale 1:1,500,000. Covers the Caucasus. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to a modified 'Europe Lambert Conformal Conic' projection with a central meridian of 44 degrees East projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, roads, railroads, churches, territorial boundaries, shoreline features, and more. Relief shown by hachures and spot heights. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection as part of the Open Collections Program at Harvard University project: Islamic Heritage Project. Maps selected for the project represent a range of regions, originators, ground condition dates, scales, and purposes. The Islamic Heritage Project consists of over 100,000 digitized pages from Harvard's collections of Islamic manuscripts and published materials. Supported by Prince Alwaleed Bin Talal and developed in association with the Prince Alwaleed Bin Talal Islamic Studies Program at Harvard University.

Turkey, Middle East, and the South Caucasus, 1771 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Turcia Asiatica : exhibens Natoliam modernam, in suos beglirbegatus divisam, itemque reliquos beglirbegatus, sive gubernationes et Prfecturas generales, in regionibus Georgiæ, Armeniæ, Mespotamiæ, Syriæ et Arabiæ sitos, una cum Mari Nigro, Mari Azowiensi, Mari di Marmora, et Mari Ægeo, atque adiacentibus Insulis : C. P. S. C. M. = Carte de la Turquie asiatique contenant la Natolie moderne divisée en les beglerbeys &c., ex novissimis subsidiis ac relationibus ad normam legitimae proiectionis in usum belli praesentis delineata impensis homannianorum heredum. It was published by Homannianorum Heredum in 1771. Scale [ca. 1:4,800,000]. Covers Turkey and portions of the Middle East and the South Caucasus. Map in Latin with title in French. The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Miller Cylindrical projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial and provincial boundaries, shoreline features, and more. Relief shown pictorially. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection as part of the Open Collections Program at Harvard University project: Islamic Heritage Project. Maps selected for the project represent a range of regions, originators, ground condition dates, scales, and purposes. The Islamic Heritage Project consists of over 100,000 digitized pages from Harvard's collections of Islamic manuscripts and published materials. Supported by Prince Alwaleed Bin Talal and developed in association with the Prince Alwaleed Bin Talal Islamic Studies Program at Harvard University.

Arabian Peninsula and Middle East, 1654 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Carte des trois Arabies : tirée en partie de l'Arabe de Nubie, en partie de diuers autres autheurs, par le S. N. Sanson d'Abbeville Geographe ordinaire du Roy ; J. Somer sculp. It was published by Chez Pierre Mariette in 1654. Scale [ca. 1:7,500,000]. Map in French and Latin. Covers the Arabian Peninsula. The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Miller Cylindrical projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial boundaries, shoreline features, and more. Relief shown pictorially. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection as part of the Open Collections Program at Harvard University project: Islamic Heritage Project. Maps selected for the project represent a range of regions, originators, ground condition dates, scales, and purposes. The Islamic Heritage Project consists of over 100,000 digitized pages from Harvard's collections of Islamic manuscripts and published materials. Supported by Prince Alwaleed Bin Talal and developed in association with the Prince Alwaleed Bin Talal Islamic Studies Program at Harvard University.

Arabian Peninsula, ca. 1747-1767 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Carte de la coste d'Arabie, Mer Rouge et Golfe de Perse : tir�e de la Carte de l'Oc�an Oriental publi�e en 1740 par Ordre de Mgr le Comte de Maurepas augment�e sur des remarques particuli�res et dress�e sur des observations astronomiques = Kaart van de Kust van Arabi�, de Roode-Zee en de Gulf van Persi� Gemaakt na de Fransse-Kaart van den Ooster-Ocean uitgegeven A. 1740 op Bevel van den Hre Grave de Maurepas Vermeederd op byzondere Aanmerkingen, en geschikt volgens Sterrekundige-Waarnemingen, J. V. Schley. It was published by Pierre de Hondt between 1747 and 1767. Scale [ca. 1:14,000,000]. Covers the Arabian Peninsula. Map in French and Dutch. The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Gall Stereographic projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, shoreline features, and more. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection as part of the Open Collections Program at Harvard University project: Islamic Heritage Project. Maps selected for the project represent a range of regions, originators, ground condition dates, scales, and purposes. The Islamic Heritage Project consists of over 100,000 digitized pages from Harvard's collections of Islamic manuscripts and published materials. Supported by Prince Alwaleed Bin Talal and developed in association with the Prince Alwaleed Bin Talal Islamic Studies Program at Harvard University.

Ottoman Empire, 1899 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Empire Ottoman : division administrative, dressée d'après le Salnamé 1899/1317 par R. Huber. It was published by F. Loeffler in 1899. Scale 1:1,500,000. Covers the Ottoman Empire. Map in French. The image inside the map neatline is georeferenced to the surface of the earth and fit to a modified 'Europe Lambert Conformal Conic' projection with a central meridian of 38 degrees East projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, roads, railroads, territorial and administrative boundaries, shoreline features, and more. Includes index, tables of statistics and insets: Crete -- [Vilayets Andrinople, Salonique, Monastir, Janina, Uskub, Scoutari, Constantinople] -- [Beyrouth] -- [Basra]. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection as part of the Open Collections Program at Harvard University project: Islamic Heritage Project. Maps selected for the project represent a range of regions, originators, ground condition dates, scales, and purposes. The Islamic Heritage Project consists of over 100,000 digitized pages from Harvard's collections of Islamic manuscripts and published materials. Supported by Prince Alwaleed Bin Talal and developed in association with the Prince Alwaleed Bin Talal Islamic Studies Program at Harvard University.