bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and Structure of Boron Compounds Bearing Tridentate Ligands with 1,3-Bicarbonylbenzene Skeleton
Authors: Nakatsuji Jun-ya , Yamamoto Yohsuke 
Published: June 2010

Abstract
In order to examine differences in structure due to the electronic nature of the oxygen ligand, several organoboron compounds bearing ester 8a–8c and amide 13a and 13b ligands were prepared and crystallographically analyzed. In the ester ligand systems, the pinacolato derivative 8a and catecholato derivative 8b took a pentacoordinate structure, while fluorenyl derivative 8c took a tetracoordinate structure instead of pentacoordinate due to the strong electrophilic nature of the boron atom. In contrast to the ester ligand systems, no pentacoordinate species were found in the amide ligand systems. The pinacolato derivative 13a is tricoordinated, and catecholato derivative 13b is tetracoordinated. These results could be due to the steric effect of the diisopropylamide ligand together with the electronic effects. The VT NMR study and the DFT calculations reveal that the energy difference between the tetracoordinate and pentacoordinate structure in 8c is very small, and indicated that the electronic nature and steric effects of the ligand greatly affect the coordination state of the boron atom.
Synthesis and Structures of Lithium Salts of Stannole Anions
Authors: Saito Masaichi , Kuwabara Takuya , Ishimura Kazuya , Nagase Shigeru 
Published: June 2010

Abstract
1-Lithio-1-phenyl- and 1-lithio-1-trimethylsilylstannoles were synthesized and the corresponding lithium salts of stannole anions were characterized by X-ray diffraction analysis. The five-membered rings of the two lithium salts are planar with remarkable alternation of the C–C bonds, suggesting that they are both non-aromatic. Theoretical calculations are also carried out to discuss their electronic nature.
Quantification of unbound prednisolone, prednisone, cortisol and cortisone in human plasma by ultrafiltration and direct injection into liquid chromatrography tandem mass spectrometry
Authors: Ionita I A , Akhlaghi F 
Published: June 2010

Background The existing methods for quantitative analysis of free corticosteroids require high volume of plasma and laborious extraction processes. Development of ultrafiltration followed by the liquid chromatrography tandem mass spectrometry (LC-MS/MS) method that requires 300 μL of plasma, does not entail any offline extraction and achieves good sensitivity was described. Methods Unbound corticosteroids were separated by the ultrafiltration of plasma using Microcon® centrifugal filter devices (10,000 Dal nominal molecular weight limit). A 30 μL aliquot of the ultrafiltrate was directly injected into a two-dimensional high-performance liquid chromatography clean-up and separation system coupled with API-4000 mass spectrometer. The clean-up was performed on a Strata-X on-line extraction cartridge. A Zorbax-SB Phenyl, Rapid Resolution HT (2.1 × 100 mm) column was employed to chromatographically resolve cortisol and prednisolone from each other, from cortisone and prednisone as well as from interferences found in plasma from stable kidney transplant recipients. Results Intra- and inter-run imprecision and inaccuracy within ±15% were achieved during a three-batch validation for quality control samples at six concentrations in ultrafiltrate from charcoal-stripped plasma and three concentrations from normal plasma, over a 2000-fold dynamic range. The lower limit of quantification was 0.100 ng/mL for all four corticosteroids. Conclusions A highly selective, sensitive, simple and robust LC-MS/MS method was developed for the simultaneous quantification of free cortisol, cortisone, prednisolone and prednisone. The performance of the Strata-X on-line extraction cartridge was maintained for over 700 injections. The assay was successfully applied for the analysis of the analytes in over 500 plasma samples from stable kidney transplant recipients.
The increased plasma C-reactive protein and interleukin-6 levels in patients undergoing coronary artery bypass grafting surgery are associated with the interleukin-6−174G > C gene polymorphism
Authors: Wypasek E , Undas A , Sniezek-Maciejewska M , Kapelak B , Plicner D , Stępień E , Sadowski J 
Published: June 2010

Background The interleukin-6 (IL-6) promoter −174G/C polymorphism (rs1800795) is associated with enhanced systemic inflammatory response to injury. However, data on the effect of this polymorphism on inflammatory markers in patients undergoing coronary artery bypass grafting surgery (CABG) are inconsistent. The aim of our study was to investigate whether −174G/C IL-6 polymorphism affects plasma IL-6 and C-reactive protein (CRP) concentrations in patients undergoing CABG. Methods A total of 179 consecutive white patients (77% men, aged 65 ± 8.6 standard deviation [SD] y) scheduled for elective isolated CABG were studied. Pre- and postoperative CRP and IL-6 levels were analysed in relation to the 174G/C IL-6 polymorphism determined by using TaqMan single-nucleotide polymorphism genotyping technique. Results The genotype distribution was as follows: GG –46 (26%), GC –93 (52%) and CC –40 (22%). The C allele carriers had higher baseline CRP (4.1 ± 0.35 versus 2.4 ± 0.59 mg/L, P = 0.02) and IL-6 levels (3.0 ± 0.17 versus 2.2 ± 0.3 pg/mL, P = 0.02) than GG patients. Five to seven days after CABG, CRP levels rose by 54% ( P = 0.03), and IL-6 levels tended to be higher ( P = 0.07) in −174C allele carriers than the non-carriers. There were no associations between −174G/C IL-6 polymorphism and any demographic-, clinical- or procedure-related variables as well as major adverse cardiovascular events. Multivariate regression analysis, including sex, age, body mass index, hypercholesterolaemia, smoking, hypertension diabetes, identified CG + CC genotype as the only independent predictor of preoperative CRP and IL-6 levels. Conclusions The presence of the −174C allele determines to some extent higher plasma CRP and IL-6 concentrations pre- and postoperatively in CABG patients.
Copper monoethanolamine adsorption in wood and its relation with cation exchange capacity (CEC)
Authors: Lee Myung Jae , Cooper Paul 
Published: June 2010

Abstract
To investigate the chemical adsorption capacity of copper-monoethanolamine (Cu-Mea) components on wood, the Na+ cation exchange capacity (CEC) of red pine (Pinus resinosa Ait.) was determined and compared with the adsorption capacity of free Mea, Cu2+ and Cu-Mea complexes. Red pine showed higher CEC as pH increased. Free Mea adsorption as a function of pH followed the Na adsorption curve except at pH over 9, when it exceeded the CEC. Below pH 5, where Cu-Mea complexes do not form, divalent Cu2+ was adsorbed as if it were monovalent. Cu-Mea adsorbed up to the CEC at pH 9.0–9.5 apparently as [CuMea]+, whereas the complex in solution is predominantly of the form [Cu(Mea)2]+. FTIR analysis showed that the same sites of wood are related to Mea, Na, and Cu adsorption.
Factors That Influence the Effectiveness of Child Protection Teams
Authors: Kistin Caroline J. , Tien Irene , Bauchner Howard , Parker Victoria , Leventhal John M. 
Published: June 2010

OBJECTIVES:More than $55 million is spent on hospital-based child protection teams (CPTs) annually, but there is no consensus on what makes CPTs effective. The objective of this study was to create expert consensus on tasks that CPTs should perform and factors that contribute to effectiveness.METHODS:A modified Delphi approach was used to create expert consensus among professionals with experience working on or with hospital-based CPTs. Three initial rounds of surveys were conducted; a first round of open-ended questions generated topics related to CPT tasks and factors related to team effectiveness. A Likert scale (range: 1–7) determined rank. In the fourth round, participants ranked the top 5 variables associated with effectiveness.RESULTS:Twenty-six (90%) of 29 participants completed the first 3 rounds, and 20 (67%) completed the final ranking. Experts believed that CPTs should provide communication of findings to appropriate agencies (mean Likert score: 7.0), court testimony (7.0), medical consultations (6.9), multidisciplinary case review (6.6), and forensic interviews (6.0). CPT success should be determined by professionals who use CPT services (6.6) and CPT members (6.5). Variables that were ranked most often as critical to effectiveness included interdisciplinary collaboration (95% of participants), provision of resources (80%), and team collegiality (75%). Variables that were ranked as most detrimental included inadequate staffing (85%) and lack of collegiality (80%).CONCLUSIONS:A multidisciplinary team working in a collegial atmosphere seems to be the major key to CPT effectiveness. In addition to providing services, CPTs should focus on improving collegiality and interdisciplinary collaboration and should seek performance feedback from referring professionals and CPT members.
Teilsicherheitsfaktoren für die Berechnung von Großkraftwerken
Authors: Glowienka Simon , Hansen Heribert 
Published: June 2010

AbstractDie Baustrukturen von Großkraftwerken werden in Deutschland u. a. auf Basis der VGB‐Richtlinie R 602 U berechnet und bemessen. In dieser Richtlinie sind unter Berücksichtigung der Besonderheiten des Großkraftwerksbaus Einwirkungen und Teilsicherheitsfaktoren definiert. Während die Lasten auf diese Randbedingungen abgestimmt wurden, hat man die Teilsicherheitsfaktoren auf der Lastseite aus der DIN 1055‐100 entnommen und lediglich die Kombinationsbeiwerte angepasst. Diese Sicherheitsbeiwerte tragen jedoch den speziellen Randbedingungen eines Kraftwerks oder Schwerindustriebaus nur bedingt Rechnung. Im Rahmen des Beitrags werden die Teilsicherheitsbeiwerte auf der Einwirkungsseite – insbesondere für das Konstruktionseigengewicht – für die Bemessung von Stahlbetonteilen vor diesem Hintergrund kritisch diskutiert und ein optimierter, wissenschaftlich abgesicherter Vorschlag unterbreitet.Partial Safety Factors for the Design of Power PlantsIn Germany power plants are designed in accordance to VGB regulation R 602 U. In this code load actions and partial safety factors are applied taking the special characteristics of power plants into consideration. The actions are defined regarding these circumstances, however the safety coefficients are assumed according to DIN 1055‐100 and only the combination coefficients are adjusted. However it has to be recognized that the partial safety factors in DIN 1055‐100 are calibrated for building constructions and thus do not consider the specialities of power plants in an adequate manner. In this paper the partial safety factors for the design of power plants and other heavy industry buildings are discussed for structural concrete elements and a scientific based optimized approach for the safety factor for dead load is presented.
Grundlagen des Lebensdauermanagements im Kraftwerksbau
Authors: Pfister Tobias , Lehnen Dieter , Bockhold Jörg , Meyer Joachim 
Published: June 2010

AbstractDer Begriff des “Lebensdauermanagements” rückt im Kraftwerksbau auch bei der Planung von Neubauten verstärkt in das Blickfeld der Betreiber. Darüber hinaus werden für Bestandsbauwerke unter dem Einfluss von Laufzeitverlängerungen Maßnahmen erforderlich, die die Restlebensdauer zuverlässig bewerten und sicherstellen können. Der vorliegende Beitrag zeichnet die rechtlichen Rahmenbedingungen nach, aus denen sich das Erfordernis eines aktiven Lebensdauermanagements ergibt und stellt die Vorgehensweise und grundlegenden Elemente einer derartigen begleitenden Überwachungsstrategie dar.Fundamentals of Lifetime Management in Power PlantsThe concept of “lifetime management” moves more and more into the focus of power plant owners, also in the context of new constructions. Additionally, for existing buildings there is a demand for methods, which are able to estimate the remaining lifetime in a reliable way. The present contribution collocates the legal general conditions, which lead to a requirement of an active lifetime management, and presents the procedure and basic elements of such an accompanying inspection strategy.
Querkraftbemessung von bügel‐ oder wendelbewehrten Bauteilen mit Kreisquerschnitt
Authors: Bender Michél , Mark Peter , Stangenberg Friedhelm 
Published: June 2010

AbstractFür bügel‐ oder wendelbewehrte Stahlbetonbauteile mit Kreisquerschnitt – mit oder ohne zusätzlich drückenden Normalkräften – werden aus dem speziellen inneren Schubfluss die Spannungen in Bügeln und im geneigten Druckfeld abgeleitet und in Widerstandsgleichungen zur Querkraftbemessung umgesetzt. Die Gleichungen besitzen die bekannte Form aus DIN 1045‐1 bzw. EC2 und sind erweitert durch einen so genannten Wirksamkeitsfaktor, welcher die Widerstände gegenüber Rechteckquerschnitten auf rund 75% herabsetzt. Alternativ zur bekannten Gleichungsart wird eine additive Widerstandsform aus Betontraganteilen, Fachwerkwirkung und Sprengwerk für die maßgebende Zugstrebentragfähigkeit vorgeschlagen. Eine umfangreiche Versuchsserie verifiziert die Ansätze und zeigt Einzeleffekte von Bügelspannungen, Bewehrungsgrad und Bügelaktivierung sowie Wendel‐ und Normalkrafteinflüsse.Shear Design of Members with Circular Sections Reinforced by Stirrups or SpiralsFor RC members with circular sections the stresses within stirrups or spiral reinforcements as well as within the inclined compression field are derived from the specific inner shear flow and elaborated to gain equations for the shear resistances. The equations use the established scheme of DIN 1045‐1 or EC 2 extended by an efficiency factor reducing resistances compared to rectangular sections to about 75%. Alternatively, an additive approach for the resistance of the tensile strut is proposed. It sums up from concrete contributions, strut‐and‐tie actions as well as arch contributions introduced by axial forces. Both approaches are verified to experimental data taken from extensive test series. The characteristics of stirrup stresses and stirrup activation as well as effects from the shear reinforcement ratio, the use of inclined spirals and axial forces are presented.
Querkraftbemessung nach DIN 1045‐1
Authors: Heuer Andreas 
Published: June 2010

AbstractIm vorliegenden Beitrag werden Arbeitshilfen für die Querkraftbemessung nach DIN 1045‐1 entwickelt. Unter Anwendung der vorgestellten Bemessungstabellen erfolgt die Bestimmung der Querkraftbewehrung auf sehr einfache Weise. Der Aufwand bei der Bemessung wird auf ein Minimum reduziert, positive Nebeneffekte bestehen in der Übersichtlichkeit und Wirtschaftlichkeit der Bemessungsergebnisse – auch bei Querkraft unter dem Einfluss von Längsspannungen.Aus dem vorgestellten Nomogramm für Vollplatten lässt sich in Abhängigkeit vom Rechenwert der bezogenen Querkraft – τEd = VEd/z, der Betonfestigkeit und der statischen Höhe direkt bestimmten, welche Längsbewehrung erforderlich ist, um Querkraftbewehrung zu vermeiden.Die wichtigsten Bemessungshilfen – Diagramme für Bauteile ohne Querkraftbewehrung sowie eine Bemessungstabelle für die Querkraftbemessung ohne Längskraft – sind im Anhang als Arbeitsblatt zusammengefasst.Shear Force Design according to DIN 1045‐1. A simple procedureIn the present paper are deduced worksheets for lateral force design according to DIN 1045‐1. By using the tabulars the amount of shear reinforcement can be determined in a very simple way. There are positive side effects in the clarity and economy of the calculation results – even with shear force under the influence of longitudinal stresses.Beside the tabulars a nomogram for the design of solid slabs is presented. It is possible to determine in a direct way the amount of main reinforcement, wich is required in order to eliminate the assembling of reinforcement stirrups in dependence on the related shear force – τEd = VEd/z, the concrete strength and the effective depth.The basic measuring tools for the design without a longitudinal force are summarized in the annex as a worksheet.
ChemInform Abstract: Crystal Structure, Ferromagnetic Ordering and Magnetic Anisotropy for Two Cyano‐Bridged Bimetallic Compounds of Formula Mn2(H2O)5Mo (CN)7×nH2O.
Authors: LARIONOVA J. , SANCHIZ J. , GOHLEN S. , OUAHAB L. , KAHN O. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Dimeric and Polymeric Pnictidostannate(IV) Anions — Preparation and Crystal Structures of Na2K3[SnP3], Na2Cs3[SnP3] and Na2K3[SnBi3].
Authors: ASBRAND M. , EISENMANN B. , ENGELHARDT H. , ROESSLER U. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: (NH4)2Na3 (V3W3O19)×12H2O.
Authors: XU Y. , XU J.‐Q. , YANG G.‐Y. , WANG T.‐G. , XING Y. , LIN Y.‐H. , JIA H.‐Q. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Bright UV‐Blue Luminescent Colloidal ZnSe Nanocrystals.
Authors: HINES M. A. , GUYOT‐SIONNEST P. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Comparative Study of the Crystal—Chemical Behavior of Zr4+, Tb4+ and U4+ Ions in MF2—M′F4 Systems (M: Ca, Sr, Ba, Cd; M′: Zr, Tb, U).
Authors: LARGEAU E. , EL‐GHOZZI M. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Phase Relations and Chemical Transport of the Compounds in the Ternary System Re/Mo/O.
Authors: FELLER J. , OPPERMANN H. , KUCHARKOWSKI R. , DAEBRITZ S. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Gas Chromatography—Mass Spectrometry of the Stereoisomers of Heterocyclic Compounds. Part 2a. Perhydroxanthenes.
Authors: BOBYLEVA M. S. , KULIKOV N. S. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: From Disymmetric Molecules to Chiral Polymers: A New Twist for Supramolecular Synthesis?
Authors: ZAWOROTKO M. J. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Attainment of syn‐Selectivity for Boron‐Mediated Asymmetric Aldol Reactions of Carboxylic Esters.
Authors: LIU J.‐F. , ABIKO A. , PEI Z. , BUSKE D. C. , MASAMUNE S. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Enantioselective Catalysis. Part 121. Chiral Phosphane Ligands with Additional Oxygen Functionalities.
Authors: BRUNNER H. , RUECKERT T. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Amine Additives Greatly Expand the Scope of Asymmetric Hydrosilylation of Imines.
Authors: VERDAGUER X. , LANGE U. E. W. , BUCHWALD S. L. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Two‐Step Phosphorus‐Mediated Substitution of Hydroxy Groups in Selected Primary Alcohols for Fluorinated Alkyl or Aryl Substituents: The Molecular Structure of 1,1‐Bis(fluorosulfonyl)‐1‐fluoro‐2‐phenylethane.
Authors: KOLOMEITSEV A. , SHTAREV A. , CHABANENKO K. , SAVINA T. , YAGUPOLSKII YU. , GOERG M. , PRZYBOROWSKI J. , LORK E. , ROESCHENTHALER G.‐V. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Tributyltin Cyanide‐Catalyzed Addition of Methyl Cyanoformate to Aldehydes in Organic Solvents.
Authors: SHIN D.‐S. , JUNG Y.‐S. , KIM J.‐J. , AHN C. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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 of Five, Six‐, and Seven‐Membered Heterocycles by Intramolecular Ring Opening Reactions of 3‐Oxetanol Derivatives.
Authors: BACH T. , KATHER K. , KRAEMER O. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Asymmetric Fluorination of Enolates with Nonracemic N‐Fluoro‐2,10‐camphorsultams.
Authors: DAVIS F. A. , ZHOU P. , MURPHY C. K. , SUNDARABABU G. , QI H. , HAN W. , PRZESLAWSKI R. M. , CHEN B.‐C. , CARROLL P. J. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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.