bluuebunny/crossref_metadata_2025_split huggingface dataset:
A New Binuclear Lutetium(III) Dimethyl-N-trichloroacetylamidophosphate Complex with a γ, γ'-Dipyridyl Bridge, {Lu[CCl3C(O)NP(O)(OCH3)2]3}2-μ(γ,γ'-dipy)
Authors: Trush Victor A. , Swiatek-Kozlowska Jolanta , Skopenko Victor V. , Amyrkhanov Vladimir M. 
Published: February 2015

Abstract
A new type of binuclear coordination compound of lutetium, {Lu2L6 · μ-(γ,γ '-dipy)} (where L = dimethyl-N-trichloroacetylamidophosphate anion and γ,γ '-dipy = 4,4'-dipyridyl), has been obtained. The IR spectroscopic data reveal that the ambidentate phosphoryl ligand is coordinated to the metal center in a bidentate manner via the phosphoryl and carbonyl oxygen atoms. The crystal and molecular structure of {Ln2L6-μ-(γ ,γ '-dipy)} has been determined by means of X-ray diffraction (triclinic, space group P i with parameters: a = 9.259(2), b = 12.530(3), c = 16.548(3) Å, α = 85.44(3)°, β = 75.64(3)°, γ = 70.56(3)°, Z = 1). The structure is made up of centrosymmetric binuclear molecules, in which the neutral heterocyclic ligand is coordinated to the metal centers in a bidentate bridging manner via its nitrogen atoms. The coordination number of each Lu(III) atom is 7 [60(L-) + N((γ ,γ '-dipy)]. Phosphoryl and carbonyl groups of the L- ligands are disposed in syn-position and are included in the six-membered chelate metallocycles. The coordination polyhedron of lutetium can be described as distorted mono-capped octahedron.
Reaktionen von C(NMe2)4 mit Carbonylverbindungen der 6. Gruppe. Kristallstrukturen von [C(NMe2)3][(CO)5CrC(O)NMe2], [C(NMe2)3]2[Mo2(CO)10] und [C(NMe2)3][(CO)4Mo(O2CNMe2)] / Reactions of C(NMe2,)4 with Group 6 Carbonyl Compounds. Crystal Structures of [C(NMe2 )3 ][(CO)5 CrC(O)NMe2], [C(NMe2)3]2[Mo2(CO)10] and [C(NMe2)3][(CO)4 Mo(O2CNMe2)]
Authors: Petz Wolfgang , Neumüller Bernhard , Lorberth Jörg , Megges Klaus , Massa Werner 
Published: February 2015

Abstract
The reaction of C(NMe2)4 (1) with M(CO)6 (M = Cr, W) in THF solution leads to the anionic carbamoyl complexes [C(NMe2)3][(CO)5MC(O)NMe2] (2a, M = Cr; 2c M = W). In the case of M = Mo the resulting complex 2b is not obtained; instead, the salts [C(NMe2)3]2[Mo2(CO)10] (3) and [C(NMe2)3][(CO)4Mo(O2CNMe2)] (4) are isolated. The crystal structures of 2a, 3, and 4 are presented. In the salt-like compounds no interatomic contacts between anion and cation exist, and the cations are disordered. The structure of 4 shows two independent molecules. The compounds were further characterized by IR and NMR spectroscopy.
Total Synthesis of S-(+)-Argentilactone
Authors: Saeed Muhammad , Abbas Muhammad , Khan Khalid Mohammad , Voelter Wolfgang 
Published: February 2015

Abstract
Asymmetrie Total Synthesis Asymmetrie total synthesis of S-(+)-argentilactone (2) was accomplished, using methyl-a-D-glucopyranoside (3) as carbohydrate template. Benzylidene acetal 5 was hydrolysed with tBuOOH/AlCl3 and further manipulated to produce the aldehyde 10. A Wittig reaction and subsequent oxidation of the anomeric position yielded the target argentilactone.
Synthesis and Crystal Structure of a Novel Polymeric Lead(II) Complex with Thiosemicarbazonato and Thiocyanate Ligands
Authors: Castiñeiras Alfonso , Domínguez Ricardo , Bresolin Leandro , Bordinhão Jairo , Bortoluzzi Adaílton João , Hörner Manfredo 
Published: February 2015

Abstract
A novel heptacoordinated thiosemicarbazonato lead(II) complex [Pb(4ML)(SCN)] (4ML = 2-Acetylpyridine-4N-methylthiosemicarbazonato) was synthesized and characterized by conventional methods (IR and elemental analysis) and single-crystal X-ray diffraction. [Pb(4ML)(SCN)] shows an unusual polymeric structure in which the lead atom is hexa-coordinate, the deprotonated thiosemicarbazone both chelates and bridges, and the thiocyanate group acts as bridge between lead(II)-thiosemicarbazonate fragments. There is hydrogen-bonding between the polymeric chains. The complex crystallizes in the triclinic space group P 1̅̅ with a = 7.461(2), b = 9.572(2), c = 11.235(2) Å, α = 66.51(3), β = 84.01(3), γ = 68.75(3)°, V = 685.1(2) Å3, Z = 2.
Effect of a Thermal Treatment on the Activity of Carbon-Supported Pt, Pt+W and Pt+Mo Electrocatalysts for Methanol Oxidation Reactions
Authors: Gökağaç Gülsün , Leger Jean-Michel 
Published: February 2015

Abstract
Previous studies on carbon supported Pt, Pt+W and Pt+Mo indicated that Pt+Mo was the most active electrocatalyst at low potentials and that Pt+W has similar properties as pure Pt in methanol oxidation. Those samples were thermally treated at 900 °C in a hydrogen gas atmosphere for 6 hours to observe the effect on metal particle sizes and on their distribution on carbon support. It was found that thermally treated Pt+Mo/XC-72 remains the most active catalyst at all potentials compared to the other heated samples. The heat treatment caused the sintering of small particles leading to a decrease in activity of the catalysts except Pt+Mo/XC-72. The heat treated samples were characterised by voltammetry, X-ray diffraction, transmission electron microscopy and energy dispersive X-ray analysis techniques. The methanol oxidation reaction was followed by in-situ FTIR spectroscopy to identify products and adsorbed species on the surface of electrode.
Synthese und Struktur oxoverbrückter, M(CO)5 geschützter Hexa-Germanium-Käfigverbindungen /Synthesis and Structure of Oxo-Bridged, M (CO)5 Protected Hexagermanium Cage Compounds
Authors: Renner Gerd , Huttner Gottfried , Rutsch Peter 
Published: February 2015

Abstract
Na2[M2(CO)10] and GeCl4 react to give the compounds [(CO)5MGeCl3]- , 1a - 1c (M = Cr, Mo, W). From M(CO)5·THF and Gel2 in the presence of I- compounds [(CO)5MGeI3]-, 2a - 2c (M = Cr, Mo, W) are obtained. Compounds 2a and 2c react with alkoholates or thiolates to produce the cage compounds [{(CO )5Cr}6Ge6(μ2-OH )2(μ3- O)6]2-, 3, [{(CO)5Cr}6Ge6 - (μ2-OEt)2(μ2-O)4(μ3-O)2]2- , 4, and [{(CO)5W }6Ge6(OR)2(μ2- O)2(μ3-O)4]2- , 5. A structural pattern common to all these compounds is an idealised octahedral arrangement of six germanium atoms. Each of these six germanium atoms binds to an M(CO)5 protective group. The germanium atoms are integrated in the core of the cage compounds by μ3-O , μ2-O and μ2-OH bridges. The co-ordination number of germanium is generally four, with one bond radiating to the external M(CO)5 building block. In compounds 3 and 4 the remaining three germanium bonds radiate to the bridging groups within the cage. Compounds 5 contain two germanium centres which are linked to the cage by only two bonds and with the two remaining bonds to the external M(CO)5 entity and to a terminal OR or SR group. Syntheses and structures of compounds 1 - 5 are described.
CD-Spectroscopic Investigations for the Determination of the Absolute Configuration of (4R,6S,7S)-Serricomin
Authors: Fleischhauer Jörg , Gabriel Sven , Enders Dieter , Wollmer Axe 
Published: February 2015

Abstract
The absolute configuration of the conformationally flexible (4R,6S,7S)-serricornin, a non­ natural isomer of the female-produced sex pheromone of the cigarette beetle (Lasioderma serricorne), was determined by comparison of measured and calculated circular dichroism spectra. The rotational strengths were calculated by means of the semiempirical CNDO/2S-method. The total synthesis was accomplished by the SAMP/RAMP-hydrazone method.
Der Bankenstresstest 2014 im Vorfeld des Single Supervisory Mechanism: Theorie und Empirie zu einem Lackmustest der neuen europäischen Bankenregulierung
Authors: Horsch Andreas , Kleinow Jacob 
Published: February 2015

Zusammenfassung
Zu den Konsequenzen der Krisenprozesse auf den Finanzmärkten zählt unter anderem eine massive Regulierung bestimmter Finanzintermediäre. Insbesondere sind Anzahl und Befugnisse bankaufsichtlicher Organisationen seit 2007 ausgebaut worden. Im Zuge dessen wird zu selten aus ökonomischer Sicht analysiert, inwieweit die einzelnen Regulierungen zu rechtfertigen sind. Der Beitrag fokussiert eines der neuen Regulierungsinstrumente und prüft, inwieweit es im Sinne einer Marktdisziplinierung tatsächlich wirksam wird: Hierzu wird erstmals der jüngste Stresstest der europäischen Bankenregulierer per Ende 2014 analysiert. Dabei geht der Beitrag mit Hilfe der Ereignisstudienmethodik der Forschungsfrage nach, ob und inwieweit dieser reformierte Stresstest einen Informationsgehalt für diejenigen Kapitalmarktteilnehmer besessen hat, die (potenzielle) Aktionäre der bewerteten Banken waren. Aus der Event Study resultieren abnormale Renditen von hoher Signifikanz, die klare Aussagen hinsichtlich der Hypothesen über einen Zusammenhang von Testergebnis und Kursentwicklung und damit letztlich über den Informationsgehalt des Stresstests zulassen. Die Veröffentlichung der Stresstest-Resultate hat demnach grundsätzlich Einfluss auf den Wert der getesteten Banken. Zudem unterscheiden sich die Resultate für durchgefallene Banken von denen der anderen Institute.
Assessment of the Insertion of Reprocessed Fuels and Combined Thorium Fuel Cycles in a PWR System
Authors: Monteiro Fabiana. B. A. , de Faria Rochkhudson. B. , Fortini Ângela , Da Silva Clarysson A. M. , Pereira Cláubia 
Published: February 2015

ABSTRACTThe insertion of reprocessed fuel spiked with thorium in a typical PWR fuel element considering (TRU-Th) cycle was simulated using different fissile materials that varied from 5.5% to 7.0%. The reprocessed fuels were obtained using the ORIGEN 2.1 code from a burned PWR standard fuel (33,000 MWd/tHM burned), with 3.1% of initial enrichment, which was remained in the cooling pool for five years and then reprocessed using UREX+ technique. The kinf, hardening spectrum and the fuel evolution during the burnup were evaluated. This study was performed using the SCALE 6.0
Replacement Zircaloy for Silicon Carbide as Fuel Cladding Material in PWR – A Neutronic Evaluation
Authors: de Faria Rochkhudson B. , Torres Felipe , Monteiro Fabiana B. A. , Pereira Claubia 
Published: February 2015

ABSTRACTSilicon carbide (SiC) has a potential to replacement zircaloy as fuel cladding material due to its high temperature tolerance, chemical stability and low neutron affinity. These characteristics may improve the economic and safety of nuclear reactors. Previous work has examined the possible use of SiC as a fuel cladding material in a PWR (Pressurized Water Reactor) environment. However, the advantage thermo mechanical and neutronic analysis replacement zircaloy cladding is not clear. Literature reviews has been done to predict the thermo mechanical behavior of SiC in high temperatures. The neutronic analysis was made using the SCALE 6.0 (Standardized Computer Analysis for Licensing Evaluation) code. This codes system is widely accepted and used worldwide for safety analysis and criticality of nuclear reactors has been utilized to model a typical fuel element of a PWR. It was used the CSAS6 and TRITON modules. The goals are to evaluate the behavior of the infinite multiplication factor (kinf) and neutron flux using SiC as a fuel cladding material.
Nanoparticles Amplified QCM Sensor for Enzyme Activity Evaluation
Authors: Stoytcheva M. , Zlatev R. , Montero G. , Valdez B. , Schorr M. 
Published: February 2015

ABSTRACTThis investigation introduces a new very simple and efficient approach for QCM sensor response amplification, developed for hydrolases activity determination. For this purpose, the QCM crystal surface was modified with nanoparticles loaded enzyme substrate. During the enzymatic substrate degradation, the heavier nanoparticles were also released from the sensitive layer together with the substrate degradation products. Nanoparticles removal resulted in QCM signal amplification due to the higher nanoparticles specific mass compared with the specific mass of the substrate.The suggested concept was successfully applied for creating of simple biosensing platforms for trypsin and lipase activity determination in real time using respectively SiO2nanoparticles loaded olive oil and Ag nanoparticles loaded gelatin as enzyme substrates. Up to 10 times amplification of the QCM signal was reached applying the proposed approach compared with the common one.
Low Resistive and Low Absorptive Nitride-Based Tunnel junctions
Authors: Minamikawa Daichi , Takasuka Daiki , Ino Masataka , Iwaya Motoaki , Takeuchi Tetsuya , Kamiyama Satoshi , Akasaki Isamu 
Published: February 2015

ABSTRACTWe have investigated two approaches for an alternative hole injection with a tunnel junction targeting deep UV-LEDs. One was an AlGaN-based tunnel junction. We fabricated the AlGaN-based tunnel junctions with various AlN mole fractions (0～0.2) grown on conventional blue-LEDs by MOVPE. A 7.5 nm heavily Mg-doped GaN/15 nm heavily Si-doped Al0.2Ga0.8N tunnel junction showed a large voltage drop, 5.31 V at 20 mA, under reverse bias. The other was a GaInN-based tunnel junction. We prepared Ga0.6In0.4N tunnel junctions with various thicknesses and Si doping levels grown on the blue LEDs by MOVPE. A 2 nm heavily Mg-doped Ga0.6In0.4N/3 nm heavily Si-doped GaN tunnel junction showed only 0.12 V drop at 20mA under reverse bias. Since an absorption of the thin GaInN tunnel junction was estimated to be less than 10 %, such a tunnel junction with small bandgap and thin layer thickness is a practical approach to obtain a low resistive and low absorptive hole injection in the deep UV-LEDs.
Nanosize effect in Germanium Nanowire Growth with Binary Metal Alloys
Authors: Biswas Subhajit , O’Regan Colm , Morris Michael A. , Holmes Justin D. 
Published: February 2015

ABSTRACTThis article describes feasible and improved ways towards enhanced nanowire growth kinetics by reducing the equilibrium solute concentration in the liquid collector phase in a vapor-liquid-solid (VLS) like growth model. Use of bi-metallic alloy seeds (AuxAg1-x) influences the germanium supersaturation for a faster nucleation and growth kinetics. Nanowire growth with ternary eutectic alloys shows Gibbs-Thompson effect with diameter dependent growth rate. In-situ transmission electron microscopy (TEM) annealing experiments directly confirms the role of equilibrium concentration in nanowire growth kinetics and was used to correlate the equilibrium content of metastable alloys with the growth kinetics of Ge nanowires. The shape and geometry of the heterogeneous interfaces between the liquid eutectic and solid Ge nanowires were found to vary as a function of nanowire diameter and eutectic alloy composition.
Effects of Alloying Elements on the Temperature Dependence of Yield Stress in L12-Co3(Al,W)
Authors: Chin Zhenghao M. T. , Okamoto Norihiko L. , Inui Haruyuki 
Published: February 2015

ABSTRACTThe effects of alloying elements (Ni/Ta) on the temperature dependence of yield stress in Co3(Al,W) with the L12 structure have been investigated through compression tests of nearly single-phase polycrystalline alloys in the temperature range between room temperature to 1,473K. Compared with a ternary Co3(Al,W), a Ni/Ta-added Co3(Al,W) alloy exhibits a higher γ΄ solvus temperature and lower onset temperature of the yield stress anomaly (positive temperature dependence of yield stress), suggesting that the CSF energy is increased by Ni/Ta addition. As a consequence, the high-temperature strength in Co3(Al,W) is considerably enhanced.
Oroantral Fistula Resulting From Chronic Periodontitis: A Rare Case Report
Authors: Shetty Lakshmi , Kulkarni Deepak , Pradhan Raunak 
Published: February 2015

Introduction: The aim of this case report is to highlight a rare case of periodontitis contributing to an oroantral fistula (OAF), which was closed with a pedicled buccal fat pad (PBF). Extraction of a tooth is often a cause for an OAF in patients. The rarity of the presented OAF is because the periodontally affected teeth were in proximity to the right maxillary sinusitis.Case Presentation: A 49‐year‐old male patient presented with nasal regurgitation of fluids with right maxillary sinusitis. It was not clear whether the OAF was attributable to the periodontal condition or anatomic changes in the sinus floor. It was concluded that periodontal disease contributed to the OAF, and the teeth were extracted with coverage of the area with a PBF. The results were excellent, with complete healing of the OAF.Conclusions: Poor oral hygiene together with smoking cause chronic periodontitis (CP), which can induce oral/antral communication, leading to a fistula. The OAF in this case was effectively closed with a PBF. Creating awareness among underserved patients about oral hygiene and maintaining a healthy oral status could prevent CP and complications such as oral and antral fistulous tracts.
Relationship Between Quality Improvement Implementation and Accreditation Seeking in Local Health Departments
Authors: Chen Li-Wu , Nguyen Anh , Jacobson Janelle J. , Gupta Niodita , Bekmuratova Sarbinaz , Palm David 
Published: February 2015

Objectives. We examined the relationship between quality improvement (QI) maturity and accreditation attributes of US local health departments (LHDs), specifically those in Nebraska. Methods. Using 2011 Nebraska LHD QI survey data, we conducted Spearman correlation analyses between QI maturity domains and accreditation attributes. Using the 2010 National Association of County and City Health Officials’ National Profile of LHDs, we conducted logistic regression analyses to examine the relationships between specific QI strategies and attitude toward seeking accreditation. Results. Leaders’ commitment to and length of time engaged in QI were positively associated with LHDs’ general attitude toward seeking accreditation. Use of QI strategies and integration of QI policies and practices were positively associated with LHDs’ confidence in their capacity to obtain accreditation. LHDs that had used at least 1 QI framework and at least 1 QI technique in the past year were more likely to agree that they would seek accreditation within 2 years of the national accreditation program. Conclusions. Experience with and expertise in QI implementation play an important role in LHDs’ decision to seek accreditation, and their accreditation-seeking efforts may benefit from prior implementation of systematic QI strategies.
Comments: Community Engagement
Authors: Donnelly John 
Published: February 2015

Editor's column
The growth in unconventionals production and the spotlight on hydraulic fracturing have heightened public concern about oil and gas industry operations and raised the stakes for those working in the industry. News media reports, movies, Internet blogs, and political debate have combined to add scrutiny to upstream operations and their potential impact on health, the environment, and local communities.
It has become not only an industry and company issue, but an individual one as well. Many engineers and other staff in the industry are getting questions about their companies’ operations from neighbors and others in their communities. Hydraulic fracturing is usually the focal point. Even though fracturing has been used by the industry since the late 1940s, many believe it is a new technology that potentially threatens water supplies and spawns other negative effects. Anti-fracturing initiatives are currently being proposed in numerous cities and states around the United States. A number of resources are available to help members of the industry answer these questions. SPE’s www.energy4me site offers information on hydraulic fracturing and other industry technologies, classroom resources for teachers, and industry careers. Other industry-affiliated associations, including the American Petroleum Institute (API) and the Independent Petroleum Association of America, provide materials as well.
The API recently issued what it calls the “gold standard” for how companies and management should engage with communities affected by exploration and development of unconventional oil and gas resources. ANSI-API Bulletin 100-3 was released after 3 years of discussions with producers, community leaders, US state regulators, property owners, and other stakeholders.
Offshore Bonanza
Authors: Moffat Jim 
Published: February 2015

Middle East Rig Market
Jim Moffat, chief executive officer of UAE-based oil and gas construction and engineering group Lamprell, says offshore drilling rig construction in the Middle East is booming.
What are your company’s main activities in the oil and gas industry and the region?
Lamprell, based in the United Arab Emirates (UAE) and with operations throughout the region, has played a prominent role in the development of the energy industry in the Middle East for more than 35 years and is the regional market leader in the rig construction business. Lamprell is a leading provider of diversified engineering and contracting services to the onshore and offshore oil and gas and renewable energy industries and, since its initial public offering in 2006, it has established leading market positions in the construction of shallow-water drilling jackup rigs, liftboats, land rigs and rig refurbishment, as well as an international reputation for complex onshore and offshore process modules and topsides. Lamprell employs approximately 10,000 people across multiple facilities, with its primary facilities located in Hamriyah, Sharjah, and Jebel Ali, all of which are in the UAE. In addition, the group has facilities in Saudi Arabia through a joint venture agreement and Kuwait.
What major operations are you are currently involved in?
So far in 2014, we have delivered five major projects, namely the NDC3 jackup rig Qarnin (to the National Drilling Company); Nexen Petroleum’s production, utilities, and quarters deck for the Golden Eagle Area Development in the North Sea; the NDC4 Marawwah jackup rig; the Seajacks Hydra jackup vessel; and, most recently, the Millennium Offshore Services’ major rig refurbishment project. We still have the Leighton and Jalilah B offshore construction projects to deliver in the third quarter of this year as well as the EDC2 (to the Eurasia Drilling Company) and NDC5 newbuild jackups in the fourth quarter. We also currently have eight rig refurbishment projects, all of which will be delivered in 2014 to suit client’s operating schedules.