939 research outputs found
Hampered Subcomponent Self-Assembly Leads to an Aminal Ligand: Reactivity with Silver(I) and Copper(II)
No full textEfficient luminescence from fluorene- and spirobifluorene-based lanthanide complexes upon near-visible irradiation
No full textSynthesis and Luminescence Properties of Dinuclear Gold(I) and Silver(I) Complexes Bearing Heteroditopic NHC Ligands
No full text
Instantaneous Kinematics and Singularities of Two Types of Under-Actuated Parallel Wrists
No full textS-(nS)PU-SPU and S-(nS)PU-2SPU are two out of three types of under-actuated wrists that are generated from the “ordinary” wrists of type S-3SPU (fully-parallel wrists), by replacing a spherical pair (S) with a nonholonomic spherical pair (nS) according to the rules stated in [1]. Position analysis, controllability, and path planning of these two wrist types have been addressed and solved in two previous papers [2, 3] of this author. Their kinetostatics and singularity analysis have not been addressed, yet; and they are studied in this paper.
[1] Grosch, P., Di Gregorio, R., and Thomas, F., 2010, “Generation of under-actuated manipulators with nonholonomic joints from ordinary manipulators,” ASME J. of Mechanisms and Robotics, 2(1): 011005-(8 pages).
[2] Di Gregorio R., 2011, “Under-Actuated Nonholonomic Parallel Wrists,” In: Proc. of the 13th World Congress in Mechanism and Machine Science (IFToMM 2011), Guanajuato, México, 19-25 June, 2011, Paper No. A12-264
[3] Di Gregorio, R., 2011, “On the S-(nS)PU-SPU and S-(nS)PU-2SPU under-actuated wrists,” Procs. of the ASME 2011 International Design Engineering Technical Conference & Computers and Information in Engineering Conference, IDETC/CIE 2011, August 28-31, 2011, Washington (DC, USA), Paper No.: DETC2011-47541
Co-authorship network dataset on psoriasis research papers from Medline database (1942-2013).
No full textA ".xlsx" file which provides data used by Gregorio González-Alcaide & collaborators in the article “Evolution of cooperation patterns in psoriasis research: co-authorship network analysis of papers in Medline (1942-2013).” The worksheet “labels” describes every variable. The worksheet “dataset” presents the following data:
PMID: PubMed Identifier for indexed documents in Pubmed used for the study. PMIDs do not change over time or during processing and are never reused.
DP: Date that the article was published.
FAU: Author name for articles published. From 2002 forward, the full author name of authors is provided, if available.
FAU-Revised: Author name after cleansing process. A standardization process of the variations in signatures from single authors was carried out. The main discrepancies we found were caused by one or more first or last names being included, the authors’ first names being either spelled out or abbreviated to the initials, and typos
Co-authorship network dataset on psoriasis research papers from Medline database (1942-2013).
No full textA ".xlsx" file which provides data used by Gregorio González-Alcaide & collaborators in the article “Evolution of cooperation patterns in psoriasis research: co-authorship network analysis of papers in Medline (1942-2013).” The worksheet “labels” describes every variable. The worksheet “dataset” presents the following data:
PMID: PubMed Identifier for indexed documents in Pubmed used for the study. PMIDs do not change over time or during processing and are never reused.
DP: Date that the article was published.
FAU: Author name for articles published. From 2002 forward, the full author name of authors is provided, if available.
FAU-Revised: Author name after cleansing process. A standardization process of the variations in signatures from single authors was carried out. The main discrepancies we found were caused by one or more first or last names being included, the authors’ first names being either spelled out or abbreviated to the initials, and typos
Copper-silica nanocomposites tailored by the sol-gel route
No full textNanocomposite silica glassy layers (host) containing copper-based species (guest) were developed and tailored by the sol-gel route. The systems were obtained by starting from ethanolic solutions of tetraethoxysilane (Si(OC2H5)4, TEOS) and copper(II) acetate (Cu(CH3COO)2‚4H2O) in a single-step process and subsequently annealed ex situ under different atmospheres (air, nitrogen, or 4% H2 in N2 mixture). In particular, the attention was focused on the possibility of tailoring the system composition and microstructure through a proper choice of the treatment temperatures (100-900 °C), duration (1-5 h), and environment. The composite evolution under annealing was investigated by glancing incidence X-ray diffraction, optical absorption spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and atomic force microscopy. Pure copper-silica-based nanosystems, with guest composition ranging from CuO to Cu and controllable particle size and distribution, were obtained. The stepwise formation of CuO, Cu2O, and Cu nanoclusters in the silica network as a function of the adopted conditions is critically discussed, highlighting the crucial points involved in the design and development of composites endowed with peculiar chemicophysical properties
The Role of Ligand Topology in the Decomplexation of Luminescent Lanthanide Complexes by Dipicolinic Acid
No full textIn this study, we present the aqueous solution behavior of twoluminescent lanthanide antenna complexes (Eu3+1,Dy3+9)with different ligand topologies in the presence of dipicolinicacid (DPA, pyridine- 2,6-dicarboxylic acid). Macrocyclic (1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid, DO3A, 9) and acyclic(1,4,7-triazaheptane-1,1,7,7-tetraacetic acid, DTTA, 1 ) ligandshave been selected to form a ratiometric pair in which Dy3+9acts as a reference and Eu3+1 acts as a probe for the recog-nition of DPA. The pair of luminescent complexes in water re-veals the capability to work as a DPA luminescent sensor. Thechange of emission intensity of Eu3+indicates the occurr enceof a new sensitization path for the lanthanide cation throughexcitation of DPA. NMR evidence implies the presence of free1 and mass spectrometry shows the formation of emitting[EuDPA2]as a result of a ligand exchange reaction
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