bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of grave locations in Dedemezari Necropolis (Western Turkey) using magnetic field derivatives
Authors: Büyüksaraç A. , Arisoy M. Ö. , Bektaş Ö. , Koçak Ö. , Çay T. 
Published: November 2008

AbstractThe location of the study area for this research of a Middle Bronze Age Necropolis is situated in the west of Turkey near Afyonkarahisar. Magnetic surveying was carried out in two adjacent areas (Areas 4 and 5). Four trenches have been excavated so far and graves were located in positions interpreted from a magnetic survey carried out in 2005. Initial excavations have shown that cist, pithos and simple graves were placed randomly and it is suggested that Dedemezari Necropolis is similar to the well known necropoleis of Gordion and Sariket. This paper compares the results of some phase‐based filters which show improved performance as edge detectors in different ways. The filters are demonstrated on synthetic magnetic data and magnetic field data from Dedemezari Necropolis. Magnetic field derivatives, both vertical and horizontal, are common and useful tools for interpretation of the magnetic anomalies. Interpretation of magnetic field derivatives, separately or together, provide images of shallow bodies from magnetic data. The horizontal derivatives of the total magnetic field were computed in the space domain by means of finite‐difference relationships, and the vertical derivative was computed in the frequency domain by using fast Fourier transform filtering. Derivatives of the magnetic anomalies have been used for detection of causative bodies. The analytic signal (AS), the enhanced horizontal derivative (EHD), tilt derivative (TD), theta map, hyperbolic tilt angle (HTA) and total horizontal derivative (THDR) methods were applied not only to synthetic anomalies but also to the measured magnetic anomalies of Areas 4 and 5. However, AS and EHD produced the best results as the other methods created edge effects. Copyright © 2008 John Wiley & Sons, Ltd.
Ground‐penetrating radar survey for subfloor mapping and analysis of structural damage in the Sagrado Corazón de Jesús Church, Spain
Authors: Ramírez‐Blanco Manuel , García‐García Francisco , Rodríguez‐Abad Isabel , Martínez‐Sala Rosa , Benlloch Javier 
Published: November 2008

AbstractThis work presents the results of a ground‐penetrating radar (GPR) survey of the Sagrado Corazón de Jesús Church (seventeenth century AD). The church belongs to the artistic heritage of the Society of Jesus and is located in the old part of the city of Valencia (Spain). The GPR survey had two main objectives: discovering subfloor features and determining the causes of structural failure, particularly cracks and fractures detected in the building. For the fieldwork, 200 MHz and 400 MHz centre frequency antennae were used and a total of 53 profiles were acquired. The analysis of the reflection profiles and amplitude time‐slices showed the presence of a sloping substrate below part of the church. The slope of this substrate and the fact that the church had been built near the old Arab wall of the city (eleventh century AD) suggests that the church was built on top of a moat (ditch). The variable thickness and differential compaction of the subfloor layers probably caused differential settlings in the building and therefore be the origin of some of the structural failures observed in the church. There was also a reflection hyperbola in the profiles of the east transept of the church that was hypothesized to be the reflection from the ceiling of an undocumented crypt due to its shape, size and location. That reflection feature was tested using a boroscope and found to be a brick barrel‐vault crypt. Copyright © 2008 John Wiley & Sons, Ltd.
Understanding help seeking within the context of searching digital libraries
Authors: Xie Iris , Cool Colleen 
Published: November 2008

AbstractTo date, there has been little empirical research investigating the specific types of help‐seeking situations that arise when people interact with information in new searching environments such as digital libraries. This article reports the results of a project focusing on the identification of different types of help‐seeking situations, along with types of factors that precipitate them among searchers of two different digital libraries. Participants (N = 120) representing the general public in Milwaukee and New York City were selected for this study. Based on the analysis of multiple sources of data, the authors identify 15 types of help‐seeking situations among this sample of novice digital library users. These situations are related to the searching activities involved in getting started, identifying relevant digital collections, browsing for information, constructing search statements, refining searches, monitoring searches, and evaluating results. Multiple factors that determine the occurrences of each type of help‐seeking situation also are identified. The article concludes with a model that represents user, system, task, and interaction outcome as codeterminates in the formation of help‐seeking situations, and presents the theoretical and practical implications of the study results.
Controlling the Structure of Manganese(II) Phosphates by the Choice and Ratio of Organophosphate and Auxiliary Ligands
Authors: Murugavel Ramaswamy , Kuppuswamy Subramaniam , Gogoi Nayanmoni , Steiner Alexander , Bacsa John , Boomishankar Ramamoorthy , Suresh K. G. 
Published: November 2008

AbstractTetranuclear manganese(II) phosphates [Mn(dipp)(bpy)]4⋅4 H2O (1) and [Mn4(dmpp)2(dmppH)4(bpy)4(H2O)2]⋅H2O (2) have been prepared from Mn(OAc)2⋅4 H2O and 2,6‐diisopropylphenyl phosphate (dippH2) or 2,6‐dimethylphenyl phosphate (dmppH2) in the presence of 2,2′‐bipyridine (bpy). In contrast, the reaction between [Mn(bpy)2(OAc)(ClO4)]⋅H2O and dippH2 affords [Mn(bpy)2(dippH)]2⋅2 ClO4⋅2 CH3OH (3). The reactions of Mn(OAc)2⋅4 H2O, dippH2, and pyridine (py) or 3,5‐dimethylpyrazole (dmpz) in CH3CN under reflux afford hexanuclear complexes [Mn6(dipp)6(py)8]⋅2CH3CN (4) and [Mn6(dipp)6(dmpz)6(AcOH)2]⋅2 H2O (5), respectively. Although compounds 1 and 2 are tetrameric, the former is a closed cubane‐like structure resembling the D4R secondary building unit of zeolites, whereas the latter exists in a staircase structure with fused Mn2O4P2 rings. The core structure of 3 contains a Mn2O4P2 eight‐membered ring that resembles the S4R building block of zeolites. Single‐crystal X‐ray diffraction studies reveal that compounds 4 and 5 have a similar core structure and differ from each other by the neutral ligands coordinated to manganese ions. All six phosphate ligands exist in a doubly deprotonated [(RO)PO32−] form and exhibit two types of binding modes [5.222] and [3.111]. An interesting feature of compounds 1–5 is that although they are oligonuclear complexes, there is an absence of oxido bridges. The magnetic properties of compounds 1–5 have been investigated in the temperature range 5–298 K, and it was found that all the compounds obey the Curie law.
Probing the kinematics of early‐type galaxy halos using planetary nebulae
Authors: Coccato L. , Gerhard O. , Arnaboldi M. , Das P. , Douglas N.G. , Kuijken K. , Merrifield M.R. , Napolitano N.R. , Noordermeer E. , Romanowsky A.J. , Capaccioli M. , Cortesi A. , De Lorenzi F. , Freeman K.C. 
Published: November 2008

AbstractWe present first results of a study of the halo kinematics for a sample of early type galaxies using planetary nebulae (PNe) as kinematical tracers. PNe allow to extend up to several effective radii (Re) the information from absorption line kinematics (confined to within 1 or 2Re), providing valuable information and constraints for merger simulations and galaxy formation models.We find that the specific angular momentum per unit mass has amore complex radial dependence when the halo region is taken into account and that the halo velocity dispersion is related to the total galaxy luminosity, isophotal shape, and number of PNe per unit of luminosity. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
The orbital structure of the massive elliptical galaxy NGC 5846
Authors: Das P. , Gerhard O. , Coccato L. , Churazov E. , Forman W. , Finoguenov A. , Böhringer H. , Arnaboldi M. , Capaccioli M. , Cortesi A. , Lorenzi F. de , Douglas N. G. , Freeman K. C. , Kuijken K. , Merrifield M. R. , Napolitano N. R. , Noordermeer E. , Romanowsky A. J. 
Published: November 2008

AbstractWe use density and temperature profiles obtained from XMM‐Newton observations to derive a potential of NGC 5846 out to 11Re, thus probing the mass distribution deep into the halo. The inferred circular velocity is significantly higher than the extrapolation of dynamical models implying a halo, more massive than previously thought. Using an I ‐band surfacebrightness profile and a projected velocity dispersion profile consisting of long‐slit kinematic measurements and planetary nebulae (PNe) velocity dispersions, we solve the Jeans equations, assuming a non‐rotating spherical system. The solutions suggest a highly radially anisotropic galaxy outside 0.7Re with β ∼ 0.75. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Radial velocities, dynamics of stars and nebulosities with GAIA and VLT‐GIRAFFE
Authors: Martayan C. , Frémat Y. , Blomme R. , Jonckheere A. , Delle‐Luche C. , Sartoretti P. , Katz D. , Viala Y. , Floquet M. , Hubert A.‐M. , Neiner C. 
Published: November 2008

AbstractThis document is divided in two parts. The first part deals with the radial velocities (RV) distributions for B‐type stars and nebulosities observed with the VLT‐GIRAFFE in the Large and Small Magellanic Clouds towards the open clusters NGC2004 and NGC330. Thanks to the resolution of GIRAFFE spectra, we found that the RV distribution for the nebulosities in the LMC is bi‐modal. This bi‐modality can be interpreted, in term of dynamics, by the expansion of the LMC4 super‐bubble. The second part deals with the GAIA space mission and the determination of the radial velocities by using Radial Velocity Spectrometer (RVS) spectra. The methods to determine the radial velocities are presented as well as preliminary results on simulated RVS spectra. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Are ring galaxies the ancestors of giant low surface brightness galaxies?
Authors: Mapelli M. , Moore B. 
Published: November 2008

AbstractGiant low surface brightness galaxies (GLSBs), such as Malin 1, have unusually large and flat discs. Their formation is a puzzle for cosmological simulations in the cold dark matter scenario. We suggest that GLSBs might be the final product of the dynamical evolution of collisional ring galaxies. In fact, our simulations show that, approximately 0.5–1.5 Gyr after the collision which lead to the formation of a ring galaxy, the ring keeps expanding and fades, while the disc becomes very large (∼100 kpc) and flat. At this stage, our simulated galaxies match many properties of GLSBs (surface brightness profile, morphology, H I spectrum and rotation curve). (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Group 12 Dihalides: Structural Predilections from Gases to Solids
Authors: Donald Kelling J. , Hargittai Magdolna , Hoffmann Roald 
Published: November 2008

AbstractConnections between the structures of Group 12 dihalides in their vapor and crystal phases are sought and discussed. The molecular structures of all monomers and dimers (MX2: M=Zn, Cd, Hg and X=F, Cl, Br, I) were calculated at the density functional B3PW91 and MP2 computational levels. All the monomers are linear, with the mercury dihalide molecules having shorter bonds than their cadmium analogues; the ZnX2 and CdX2 structures are similar. The shorter HgX distances are traced back to relativistic effects. For the dimers, many possible geometrical arrangements were considered. The zinc and cadmium dihalide dimers have the usual D2h‐symmetry geometry, whereas the mercury dihalide dimers are loosely‐bound units with C2h symmetry. The origins of this C2h structure are discussed from different points of view, including frontier orbital interactions. The crystals of Group 12 dihalides span a wide range of structure types, from three‐dimensional extended solids to molecular crystals. There is an obvious connection between the structures and characteristics of monomers, their dimers, and the crystals they form. The similarities as well as startling differences from the Group 2 dihalides are analyzed.
Expressing Forest Origins in the Chemical Composition of Cooperage Oak Woods and Corresponding Wines by Using FTICR‐MS
Authors: Gougeon Regis D. , Lucio Marianna , De Boel Arnaud , Frommberger Moritz , Hertkorn Norbert , Peyron Dominique , Chassagne David , Feuillat François , Cayot Philippe , Voilley Andrée , Gebefügi Istvan , Schmitt‐Kopplin Philippe 
Published: November 2008

AbstractA non‐targeted, ultra‐high‐resolution mass spectrometric, direct analysis of oak‐wood extracts from two species (Quercus robur L. and Quercus petraea Liebl.) from three French forests, and of a wine aged in barrels derived therefrom has been performed to identify families of metabolites that could discriminate both the species and the geographical origin of woods. From 12 T ultra‐high‐resolution Fourier transform ion cyclotron resonance mass spectra of wood extracts, hundreds of mass signals were identified as possible significant biomarkers of the two species, with phenolic and carbohydrate moieties leading the differentiation between Q. robur and Q. petraea, respectively, as corroborated by both FTMS and NMR data. For the first time, it is shown that oak woods can also be discriminated on the basis of hundreds of forest‐related compounds, and particular emphasis is put on sessile oaks from the Tronçais forest, for which sugars are significantly discriminant. Despite the higher complexity and diversity of wine metabolites, forest‐related compounds can also be detected in wines aged in related barrels. It is only by using these non‐targeted analyses that such innovative results, which reveal specific chemodiversities of natural materials, can be obtained.
Molecular Self‐Recognition: Rotational Spectra of the Dimeric 2‐Fluoroethanol Conformers
Authors: Liu Xunchen , Borho Nicole , Xu Yunjie 
Published: November 2008

AbstractFluoroalcohols show competitive formation of intra‐ and intermolecular hydrogen bonds, a property that may be crucial for the protein‐altering process in a fluoroalcohol/water solution. In this study, we examine the intra‐ and intermolecular interactions of 2‐fluoroethanol (FE) in its dimeric conformers by using rotational spectroscopy and ab initio calculations. Three pairs of homo‐ and heterochiral dimeric FE conformers are predicted to be local minima at the MP2/6‐311++G(d,p) level of theory. They are solely made of the slightly distorted most stable G+g−/G−g+ FE monomer units. Jet‐cooled rotational spectra of four out of the six predicted dimeric conformers were observed and unambiguously assigned for the first time. All four observed dimeric conformers have compact geometries in which the fluoromethyl group of the acceptor tilts towards the donor and ensures a large contact area. Experimentally, the insertion of the OH group of one FE subunit into the intramolecular OH⋅⋅⋅F bond of the other was found to lead to a higher stabilisation than the pure association through an intermolecular OH⋅⋅⋅OH link. The hetero‐ and homochiral combinations were observed to be preferred in the inserted and the associated dimeric conformers, respectively. The experimental rotational constants and the stability ordering are compared with the ab initio calculations at the MP2 level with the 6‐311++G(d,p) and aug‐cc‐pVTZ basis sets. The effects of fluorination and the competing inter‐ and intramolecular hydrogen bonds on the stability of the dimeric FE conformers are discussed.
ChemInform Abstract: Density Functional Studies of Model Cerium Oxide Nanoparticles.
Authors: Loschen Christoph , Migani Annapaola , Bromley Stefan T. , Illas Francesc , Neyman Konstantin M. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Characterization of a Cadmium Germanium Phosphate CdGe(OH)3PO4 with an Open Framework.
Authors: Liu Yan , Yang Xiao‐Li , Wang Gui‐Li , Zhang Jun , Li Yi‐Zhi , Du Hong‐Bin , You Xiao‐Zeng 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Lanthanide Complexes of the Monovacant Dawson Polyoxotungstate [α2‐As2W17O61] 10‐ with 1D Chain: Synthesis, Structures, and Photoluminescence Properties.
Authors: Zhao Xin‐Yu , Liu Shu‐Xia , Ren Yuan‐Hang , Cao Jian‐Fang , Cao Rui‐Ge , Shao Kui‐Zhan 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ternary Magnesium Compounds Ln23Ni7Mg4 (Ln: La, Ce, Pr, Nd, Sm) with Pr23Ir7Mg4 Type Structure.
Authors: Tuncel Selcan , Hermes Wilfried , Chevalier Bernard , Rodewald Ute Ch. , Poettgen Rainer 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Effects of Aromatic Substituents of Electrochemically Generated Hypervalent Iodine Oxidant on Oxidation Reactions.
Authors: Amano Yoshiharu , Nishiyama Shigeru 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Iodine‐Catalyzed Allylic Alkylation of Thiols with Allylic Alcohols.
Authors: Zhang Xiaoxiang , Rao Weidong , Chan Philip Wai Hong 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: General and Efficient Copper‐Catalyzed Amidation of Saturated C—H Bonds Using N‐Halosuccinimides as the Oxidants.
Authors: Liu Xiaowei , Zhang Yongming , Wang Long , Fu Hua , Jiang Yuyang , Zhao Yufen 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nickel‐Catalyzed Cross‐Coupling Reactions of Alkyl Aryl Sulfides and Alkenyl Alkyl Sulfides with Alkyl Grignard Reagents Using (Z)‐3,3‐Dimethyl‐1,2‐bis(diphenylphosphino)but‐1‐ene as Ligand.
Authors: Kanemura Shigenari , Kondoh Azusa , Yorimitsu Hideki , Oshima Koichiro 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Iron(III) Tosylate in the Preparation of Dimethyl and Diethyl Acetals from Ketones and β‐Keto Enol Ethers from Cyclic β‐Diketones.
Authors: Mansilla Horacio , Afonso Maria M. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Observations on the Synthesis and Carbocyclization Reactions of 6‐Oxohexa‐2,3‐dienoates.
Authors: Gray Philip J. , Motherwell William B. , Sheppard Tom D. , Whitehead Andrew J. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium‐Catalyzed 1,4‐Addition of Terminal Alkynes to Unsaturated Carbonyl Compounds Promoted by Electron‐Rich Ligands.
Authors: Zhou Lei , Chen Liang , Skouta Rachid , Jiang Huan‐feng , Li Chao‐Jun 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Knoevenagel Condensation at Room Temperature.
Authors: Trotzki Ronald , Hoffmann Markus M. , Ondruschka Bernd 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Metal‐Catalyzed Reactions of Alkynes. Part 2. Palladium‐Catalyzed Trimerizations of Terminal Arylalkynes: Synthesis of 1,3‐Diaryl‐2‐arylethynyl‐1,3‐butadienes.
Authors: Wu Yao‐Ting , Lin Wei‐Chih , Liu Chia‐Ju , Wu Chuan‐Yi 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reaction of Perfluorobenzocycloalkenes with SiO2—SbF5 and Skeleton Transformations of Their Carbonyl Derivatives in SbF5 Medium.
Authors: Zonov Ya. V. , Karpov V. M. , Platonov V. E. , Gatilov Yu. V. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chemosensors Based on N‐(9‐Anthrylmethyl)benzene‐1,2‐diamine.
Authors: Tolpygin I. E. , Rybalkin V. P. , Shepelenko E. N. , Popova L. L. , Revinskii Yu. V. , Tsukanov A. V. , Dmitrieva O. I. , Dubonosov A. D. , Bren' V. A. , Minkin V. I. 
Published: November 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.