bluuebunny/crossref_metadata_2025_split huggingface dataset:
Superior Reactivity of Thiosemicarbazides in the Synthesis of 2‐Amino‐1,3,4‐oxadiazoles.
Authors: Dolman Sarah J. , Gosselin Francis , O'Shea Paul D. , Davies Ian W. 
Published: April 2007

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, please click on HTML or PDF.
Asymmetric Synthesis of (+)‐CP‐99,994 (Ia) and (+)‐L‐733,060 (Ib) from Enantiomerically Pure (3S,4S)‐4‐(tert‐Butylcarbamoyl)‐4‐phenyl‐1‐buten‐3‐ol.
Authors: Oshitari Tetsuta , Mandai Tadakatsu 
Published: April 2007

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, please click on HTML or PDF.
Catalyst‐ and Pressure‐Dependent Reductive Cyclizations for the Diastereoselective Synthesis of Hexahydropyrrolo[1,2‐a]quinoline‐5‐carboxylic Esters.
Authors: Bunce Richard A. , Schammerhorn James E. , Slaughter LeGrande M. 
Published: April 2007

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, please click on HTML or PDF.
Thermolysis of 5‐Azido‐4‐arylpyridazin‐3(2H)‐ones: An Efficient and Versatile Synthesis of Pyridazino[4,5‐b]indoles.
Authors: Haider Norbert , Wobus Andrea 
Published: April 2007

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, please click on HTML or PDF.
Recyclization of Hydrazides of 2‐Carboxyphenyldifurylmethanes: Synthesis of Novel 4,10‐Dihydro‐3H‐pyridazino[1,6‐b]isoquinolin‐10‐one System.
Authors: Butin Alexander V. , Dmitriev Artem S. , Abaev Vladimir T. , Zavodnik Valery E. 
Published: April 2007

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, please click on HTML or PDF.
Novel Derivatives of Methyl and Ethyl 2‐(4‐Oxo‐8‐Aryl‐2H‐3,4,6,7‐tetrahydroimidazo[2,1‐c] [1,2,4]triazin‐3‐yl)acetates from Biologically Active 1‐Aryl‐2‐hydrazinoimidazoles: Synthesis Crystal Structure and Antiproliferative Activity.
Authors: Sztanke Krzysztof , Rzymowska Jolanta , Niemczyk Maciej , Dybala Izabela , Koziol Anna E. 
Published: April 2007

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, please click on HTML or PDF.
Zirconium‐Mediated Synthesis of Azepanes and Benzazepanes.
Authors: Macfarlane Donald P. S. , Norton David , Whitby Richard J. , Tupper David 
Published: April 2007

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, please click on HTML or PDF.
Cesium Alkyltrifluoroborates from Asymmetric Boronic Esters.
Authors: Matteson Donald S. , Maliakal Davis , Pharazyn Philip S. , Kim Byung Ju 
Published: April 2007

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, please click on HTML or PDF.
Enyne Metathesis—Oxidation Sequence for the Synthesis of 2‐Phosphono Pyrroles: Proof of the “Yne‐then‐Ene” Pathway.
Authors: Dieltiens Nicolai , Moonen Kristof , Stevens Christian V. 
Published: April 2007

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, please click on HTML or PDF.
Iridoid Glycosides and Cucurbitacin Glycoside from Neopicrorhiza scrophulariiflora.
Authors: Kim Ik Hwi , Uchiyama Nahoko , Kawahara Nobuo , Goda Yukihiro 
Published: April 2007

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, please click on HTML or PDF.
Synthesis of (2R,3S,4S)‐4‐Aryl‐3‐hydroxyprolinols.
Authors: Chang Meng‐Yang , Lin Chun‐Yu , Wu Tsun‐Cheng 
Published: April 2007

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, please click on HTML or PDF.
Highly Enantioselective Organocatalytic Addition of Unmodified Aldehydes to N‐Boc Protected Imines: One‐Pot Asymmetric Synthesis of β‐Amino Acids.
Authors: Vesely Jan , Rios Ramon , Ibrahem Ismail , Cordova Armando 
Published: April 2007

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, please click on HTML or PDF.
Total Synthesis of Pachastrissamine (Jaspine B) Enantiomers from D‐Glucose.
Authors: Ramana C. V. , Giri Awadut G. , Suryawanshi Sharad B. , Gonnade Rajesh G. 
Published: April 2007

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, please click on HTML or PDF.
A Stereoselective Synthesis of N‐β‐D‐Glycosyl Amides by a Ritter‐Type Reaction.
Authors: Song Xuezheng , Hollingsworth Rawle I. 
Published: April 2007

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, please click on HTML or PDF.
Efficient and Highly Enantioselective Formation of the All‐Carbon Quaternary Stereocenter (I) of Lyngbyatoxin A (II).
Authors: Vital Paulo , Tanner David 
Published: April 2007

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, please click on HTML or PDF.
Palladium‐Catalyzed Approach to 1,2‐Disubstituted Carbocyclic Nucleoside Analogues of 5‐Alkynyl and 5‐Alkenyl Uracil
Authors: Gonzalez Moa Maria J. , Besada Pedro , Teran Carmen 
Published: April 2007

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, please click on HTML or PDF.
Total Inversion of cis‐C5 Maxacalcitol into Its trans‐C5 Isomer via the Sulforene Intermediate.
Authors: Yamauchi Tsuyoshi , Suzuki Koji , Shimizu Hitoshi , Kato Masahiro 
Published: April 2007

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, please click on HTML or PDF.
Synthesis of Murisolin (Ia), (15R, 16R, 19R, 20S)‐Murisolin A (Ib), and (15R, 16R, 19S, 20S)‐16,19‐cis‐Murisolin (Ic) and Their Inhibitory Action with Bovine Heart Mitochondrial Complex I.
Authors: Hattori Yasunao , Kimura Yuka , Moroda Aki , Konno Hiroyuki , Abe Masato , Miyoshi Hideto , Goto Tetsuhisa , Makabe Hidefumi 
Published: April 2007

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, please click on HTML or PDF.
Methods for the Construction of [1,2]Isoindolo‐Condensed Benzazepines, Benzazocines, Quinolines, and Isoquinolines. Part 1. Isoindolobenzazepines, Isoindolobenzazocines
Authors: Boltukhina E. V. , Zubkov F. I. , Varlamov A. V. 
Published: April 2007

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, please click on HTML or PDF.
TEMPO (2,2,6,6‐Tetramethylpiperidine‐N‐oxyl) — An Important Reagent in Alcohol Oxidation and Its Application in the Synthesis of Natural Products
Authors: De Souza Marcus Vinicius Nora 
Published: April 2007

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, please click on HTML or PDF.
C7‐Substituted Estranes and Related Steroids
Authors: Morais Goreti Ribeiro , Yoshioka Naho , Watanabe Masataka , Mataka Shuntaro , Oliveira Cristina das Neves , Thiemann Thies 
Published: April 2007

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, please click on HTML or PDF.
Lebensmittelverpackungen: Alltäglich und doch unscheinbar
Authors: Welle Frank 
Published: April 2007

AbstractFast alle Lebensmittel werden heute in Verpackungen angeboten. Damit das Aroma des Lebensmittels auch beim Verbraucher ankommt, müssen Verpackungen optimal auf die abgefüllten Lebensmittel abgestimmt sein. Mit speziellen Verbundfolien, Additiven, Sauerstoff‐ und Lichtbarrieren werden Verpackungen auf die Lebensmittelgruppen abgestimmt. Mit “Aktiven und Intelligenten Verpackungen” wird weiterhin versucht, aktiv die Schlüsselparameter des Qualitätserhalts zu beeinflussen sowie den Lebensweg des verpackten Lebensmittels aufzuzeigen. All diese Entwicklungen dienen dazu, frische Lebensmittel mit einer langen Haltbarkeit und einem hohen Genusswert auf den Markt zu bringen.
Satz vom Igel zähmt widerborstige Nanopartikel
Authors: Groß Michael 
Published: April 2007

AbstractDer Satz vom Igel besagt, dass man die Borsten eines aufgerollten Igels nicht glattkämmen kann, ohne auf mindestens eine kahle Stelle zu treffen. Dieser Satz ermöglicht es selbst biologisch unbedarften Mathematikern, einen Igel von einem borstigen Fahrradschlauch zu unterscheiden. Beim Torus ginge das Glattkämmen nämlich problemlos.
Heavy rotating string—a nonlinear eigenvalue problem
Authors: Kolodner Ignace I. 
Published: March 2007

AbstractRotations of a heavy string with one endpoint free are considered. According to the linear theory, a string of a given length can rotate only at certain eigenvelocities of rotation w1 which form a discrete spectrum. It is shown that according to the more accurate non‐linear theory, a string can rotate at any velocity ω > ω1, and that for each w in the range ωn < ω < ωn+1 there are exactly n distinct modes of rotation.
Tracking cell proliferation using the far red fluorescent dye SNARF‐1
Authors: Magg T. , Albert Michael H. 
Published: March 2007

AbstractBackground:The [3H]thymidine incorporation assay and staining of living cells with fluorescent dyes like carboxyfluorescein diacetate, succinimidyl ester (CFSE) have evolved as valuable methods for studying T cell responses. To assess proliferation of cells already labeled by FITC, CFSE, GFP, or other “green” molecules or to simultaneously track two otherwise indistinguishable cell populations in mixed cell cultures, it would be desirable to have a dye with distinct fluorescent properties for this application.Methods:We analyzed the dilution of the far red fluorescent dye SNARF‐1 in proliferating cells by flow cytometric analysis. The results were compared with the CFSE dilution technique as well as the [3H]thymidine incorporation assay.Results:Staining of primary human lymphocytes revealed that SNARF‐1 labeling was equivalent to CFSE for estimating proportions of proliferating cells in stimulated cell cultures and yielded results comparable to [3H]thymidine incorporation. We showed that SNARF‐1 offers the possibility to simultaneously analyze the proliferation of phenotypically indistinguishable subsets of hematopoietic cells and can also be used to track uniformly proliferating, non hematopoietic cells like HEK293.Conclusions:In summary, we have demonstrated that labeling of cells with SNARF‐1 allows for estimating cell proliferation of cells of hematopoietic and non‐hematopoietic origin. © 2007 Clinical Cytometry Society
Luminex technology for anti‐HLA antibody screening: Evaluation of performance and of impact on laboratory routine
Authors: Colombo Maria Bernadette , Haworth Simone Elisabeth , Poli Francesca , Nocco Angela , Puglisi Giuseppe , Innocente Annalisa , Serafini Marta , Messa Piergiorgio , Scalamogna Mario 
Published: March 2007

AbstractThe recent introduction of new technologies such as Luminex has provided alternative methods to the Complement Dependent Cytotoxicity (CDC) test for HLA specific antibody detection. In this study we compared the results obtained with CDC to those obtained using a Luminex method with the aim of evaluating the impact of this new technology on antibody screening policies in our transplant setting.A total of 1,421 sera, acquired from patients on the waiting list for a kidney transplant or following transplantation, were tested by both methodologies. CDC was performed using a whole lymphocyte population comprising a panel of 52 cells. The percentage panel reactive antibodies (PRA) and antibody specificity were evaluated using Lambda Scan Analysis software. For the Luminex method sera screening and identification of antibody specificity were carried out using the LABScreen Mixed and LABScreen PRA respectively.The overall concordance between the results obtained using the CDC and the Luminex methods was 85%. HLA antibody specificity was confirmed in 96% of the sera which tested positive using the Luminex system and serum positivity corresponded with a previous sensitisation event in these individuals. Using the Luminex method 18% of patients on the waiting list were considered and managed as sensitised as compared to 7% when testing with CDC alone. The Luminex method was able to detect a number of antibody specificities significantly more frequently than the CDC method and in addition the CDC method failed to detect some of the antibody specificities detected by the Luminex system.Based on this comparison study we have incorporated the Luminex methodology into our screening strategy. © 2007 Clinical Cytometry Society
Seismic resistance of precast concrete shear walls
Authors: Caccese Vincent , Harris Harry G. 
Published: March 2007

AbstractThe earthquake resistance of stacked precast concrete simple shear walls found typically in Large Panel buildings of the cross‐wall type is studied. Physical model testing on a small shaking table facility and analytical techniques are compared. Results of the testing of four models to failure portrayed the non‐linear effects of rocking and shear slip that were assumed in several analytical studies but were never before measured experimentally. The physical model studies are supplemented with an independent mathematical analysis using a modified version of the dynamic, non‐linear computer code Drain 2–D. Correlation of the analytical and experimental results show that the computer study can be used to predict the overall shear wall response. Results of the small scale model and the mathematical model studies indicate that the simple shear wall behaves in a non‐linear manner, even for low magnitudes of base acceleration. Non‐linear effects, usually concentrated in only one or two joints, reduced force levels and increased displacements. The four small scale models that were tested withstood high magnitudes of base acceleration without collapse.
Ambient vibration test of an anchorage of South Bisan‐seto suspension bridge
Authors: Higashihara Hiromichi , Moriya Tamotsu , Tajima Jiro 
Published: March 2007

AbstractDynamical properties of an anchorage of South Bisan‐seto Suspension Bridge are determined by means of in situ measurement of the ambient vibrations. This anchorage, being located in the sea, is tall and slender; its natural frequencies are expected to be low. On the other hand, the elasticity of the ground estimated from the conventional geological data is highly dispersed. It even suggests the possibility of resonance between the towers and this anchorage. It is therefore necessary to know its natural frequencies precisely. Seismic motions and microtremors are acquired and used properly. The observation is repeated every year during the period of construction of the anchorage so that its inertial properties change significantly. First modes of the longitudinal and the transversal vibrations of the anchorage are identified and their frequencies determined. The elasticity modulus estimated from these natural frequencies is about five times as large as that of the geological survey while it is consistent with that obtained from the velocity of the elastic waves of the ground.
Stiffness deterioration measured on a steel‐reinforced concrete building
Authors: Minami Tadao 
Published: March 2007

AbstractEarthquake observations and microtremor measurements were conducted on a 12‐storey steel‐reinforced concrete building just after its completion. Marked stiffness deterioration was observed over the following five‐year period, during which time several earthquakes were recorded and two additional series of microtremor measurements were made. The large contribution made by non‐structural elements (especially the curtain walls that cover all sides of the building) to the apparent stiffness of the entire building was lost during this period. Both ageing effects and stiffness reductions depend greatly on the amplitude of the structural response of this building.
Dynamic soil–structure interaction of a single‐span bridge
Authors: Crouse C. B. , Hushmand B. , Martin G. R. 
Published: March 2007

AbstractExperimental and analytical studies were conducted to determine dynamic soil–structure interaction characteristics of a single‐span, prestressed‐concrete bridge with monolithic abutments supported by spread footings. The experimental programme, consisting of harmonic forced vibration excitation of the bridge in the transverse and longitudinal directions, revealed the presence of four modes in the frequency band, 0 to 11 Hz, and the onset of a fifth mode at 14 Hz, the highest frequency attained during the tests. The fundamental mode at 4.7 Hz was the primary longitudinal bending mode of the deck and had a relatively low damping ratio (ζ1), that was approximately 0.025 of critical. The second and third modes at 6.4 Hz and 8.2 Hz were the primary twisting modes of the deck which involved substantial transverse rocking, transverse translation and torsion of the footings. As expected, the damping ratios associated with these two modes, ζ2 = 0.035 and ζ3 = 0.15, were directly related to the relative amounts of deck and footing motion. The fourth mode at 10.6 Hz was the second twisting mode of the deck and involved relatively little motion of the footings and abutment walls, which was consistent with the low damping, ζ4 = 0.02, observed in this mode. The response data at 14 Hz suggested that the fifth mode beyond this frequency was the second longitudinal bending mode of the deck involving longitudinal translation and bending of the abutment walls.A three‐dimensional finite element model of the bridge, with Winkler springs attached to the footings and abutment walls to represent the soil–structure interaction, was able to reproduce the experimental data (natural frequencies, mode shapes and bridge response) reasonably well. Although the stiffnesses assigned to the Winkler springs were based largely on the application of a form of Rayleigh's principle to the experimental data, these stiffnesses were similar to theoretical foundation stiffnesses of the same size footings on a linearly elastic half space and theoretical lateral stiffnesses of a rigid retaining wall against a linearly elastic backfill.
Dynamic modelling of masonry buildings: Storey mechanism model as a simple alternative
Authors: Tomaževič Miha 
Published: March 2007

AbstractThe dynamic behaviour of a four‐storeyed masonry building model subjected to simulated earthquake loading has been investigated. The observations of damage propagation during shaking tests indicated the storey mechanism action of model building. Since the predominant effect of the first natural mode of vibrations has been also observed, the idea of simple mathematical modelling has been followed in the calculations. Two simple analytical models have been compared when evaluating the dynamic response of the model building: a four degrees of freedom shear system and an equivalent single degree of freedom system. Three hysteresis rules have been taken into account for modelling the non‐linear behaviour of the model. Satisfactory correlation between the measured and calculated response has been obtained in most cases.
Frictional characteristics of Teflon–steel interfaces under dynamic conditions
Authors: Constantinou M. C. , Caccese John , Harris Harry G. 
Published: March 2007

AbstractAn experimental study to assess the frictional characteristics of Teflon–steel interfaces under dynamic conditions is described. Tests were conducted on unfilled Teflon sliding on stainless steel polished to a surface roughness of less than 0.05 μm CLA. The bearing pressure was 1.38, 3.45 and 6.9 N/mm2, the frequency of sliding was 0.5 and 1 Hz and the acceleration of excitation, imposed by a small shaking table, was between 0.05 and 0.5g. It was found that friction drops with decreases in the acceleration of excitation and drops with increases in the bearing pressure. It was observed that Teflon–steel interfaces have the tendency to slide continuously regardless of the value of acceleration. This is very important in base isolation applications because it prevents high frequency input to the structure.
Seismic behaviour of girder bridges for horizontally propagating waves
Authors: Somaini Dario R. 
Published: March 2007

AbstractThe results obtained from a parametric study on the influence of horizontally propagating waves for the earthquake behaviour of continuous girder bridges are presented. The investigation is performed for floating‐supported bridges excited by an earthquake acting in their vertical planes. The shallow foundations are assumed to be supported on the surface of either a visco‐elastic halfspace or a visco‐elastic layer resting on an elastic halfspace. Steady‐state response for harmonic excitation and transient response for an artificial time history are investigated. Approximate equations describing the influence of horizontally propagating waves are presented and criteria are derived indicating when an increase of the internal forces and of the relative motion between the girder and the abutments can be expected.
Boundary element method applied to linear soil–structure interaction on a heterogeneous soil
Authors: Chapel François 
Published: March 2007

AbstractAn extension of the boundary element method to heterogeneous domains composed of horizontal layers is here proposed. It includes a numerical computation of the corresponding Green's functions, thanks to an inverse Hankel transform of the closed form solutions obtained in the spectral domain with suitable variables derived from displacements and stress vectors to obtain the decoupling between P–SV and SH waves. Transmission and reflection operators are introduced to avoid the problem of overflowing exponentials met with in Thomson–Haskell matrices.Applications are given in the soil–structure interaction field to compute the impedances of surface and embedded circular foundations resting on a viscoelastic halfspace.
A transmitting boundary for the dynamic finite element analysis of cross anisotropic soils
Authors: Werkle Horst 
Published: March 2007

AbstractThe problem of the transmitting boundary used in the dynamic finite element analysis of layered axisymmetric soil models with non‐axisymmetric displacements is considered. Each layer is modelled as a homogeneous, viscoelastic cross anisotropic medium with a vertical axis of material symmetry.