bluuebunny/crossref_metadata_2025_split huggingface dataset:
Acoustic and reservoir properties of microporous carbonate rocks: Implication of micrite particle size and morphology
Authors: Regnet J. B. , Robion P. , David C. , Fortin J. , Brigaud B. , Yven B. 
Published: December 2014

AbstractThis integrated study provides significant insight into parameters controlling the acoustic and reservoir properties of microporous limestones, improving the knowledge of the relationships among petrophysic and microstructural content. Petrophysical properties measured from laboratory and logging tools (porosity, permeability, electrical conductivity, and acoustic properties) have been coupled with thin section and scanning electron microscope observations on the EST205 borehole from the Oxfordian limestone aquifer of the eastern part of the Paris Basin. A major achievement is the establishment of the link between micrite microtexture types (particle morphology and nature of intercrystal contacts) and the physical response, introducing a new effective and interesting rock‐typing approach for microporous reservoirs. Fluid‐flow properties are enhanced by the progressive augmentation of intercrystalline microporosity and associated pore throat diameter, as the coalescence of micrite particles decreases. Concerning acoustic properties, the slow increase of P wave velocity can be seen as a reflection of crystal size and growing contact cementation leading to a more cohesive and stiffer micrite microtexture. By applying poroelasticity theory on our samples, we show that velocity dispersion can be a very useful tool for data discrimination in carbonates. This dispersion analysis highlights the presence of microcracks in the rocks, and their overall effect on acoustic and transport properties. The presence of microcracks is also confirmed with observations and permeability measurements under high confining pressure. Finally, a possible origin of high porous levels in neritic limestones is a mineralogical transformation of carbonates through freshwater‐related diagenesis during subaerial exposure time. Finally, by applying poroelasticity theory on our samples, we show that velocity dispersion can be a very useful tool for data discrimination in carbonates.
Plasma levels of apolipoprotein E and risk of dementia in the general population
Authors: Rasmussen Katrine L. , Tybjærg‐Hansen Anne , Nordestgaard Børge G. , Frikke‐Schmidt Ruth 
Published: December 2014

ObjectiveThe apolipoprotein E (APOE) ε4 allele is a major genetic risk factor for Alzheimer disease and dementia. However, it remains unclear whether plasma levels of apoE confer additional risk. We tested this hypothesis.MethodsUsing 75,708 participants from the general population, we tested whether low plasma levels of apoE at study enrollment were associated with increased risk of future Alzheimer disease and all dementia, and whether this association was independent of ε2/ε3/ε4 APOE genotype.ResultsMultifactorially adjusted hazard ratios (HRs) for Alzheimer disease and all dementia increased from the highest to the lowest apoE tertile (p for trends < 1 × 10−6). Multifactorially adjusted HRs for lowest versus highest tertile were 2.68 (95% confidence interval [CI] = 2.04–3.52) and 1.80 (95% CI = 1.52–2.13) for Alzheimer disease and all dementia, respectively. After further adjustment for ε2/ε3/ε4 APOE genotype, plasma apoE tertiles remained associated with Alzheimer disease (p for trend = 0.007) and all dementia (p for trend = 0.04). Plasma apoE tertiles did not interact with ε2/ε3/ε4 APOE genotype on risk of Alzheimer disease (p = 0.53) or all dementia (p = 0.79). In a subanalysis, the −219G>T GT promoter genotype, associated with low plasma apoE levels, remained significantly associated with increased risk of Alzheimer disease after adjustment for ε2/ε3/ε4 APOE genotype (HR = 1.56, 95% CI = 1.05–2.30).InterpretationLow plasma levels of apoE are associated with increased risk of future Alzheimer disease and all dementia in the general population, independent of ε2/ε3/ε4 APOE genotype. This is clinically relevant, because no plasma biomarkers are currently implemented. Hence, plasma levels of apoE may be a new, easily accessible preclinical biomarker. Ann Neurol 2015;77:301–311
Porous and Shape‐Anisotropic Single Crystals of the Semiconductor Perovskite CH3NH3PbI3 from a Single‐Source Precursor
Authors: Kollek Tom , Gruber Dominik , Gehring Julia , Zimmermann Eugen , Schmidt‐Mende Lukas , Polarz Sebastian 
Published: December 2014

AbstractSignificant progress in solar‐cell research is currently made by the development of metal–organic perovskites (MOPs) owing to their superior properties, such as high absorption coefficients and effective transport of photogenerated charges. As for other semiconductors, it is expected that the properties of MOPs may be significantly improved by a defined nanostructure. However, their chemical sensitivity (e.g., towards hydrolysis) prohibits the application of methods already known for the synthesis of other nanomaterials. A new and general method for the synthesis of various (CH3NH3)PbI3 nanostructures from a novel single‐source precursor is presented. Nanoporous MOP single crystals are obtained by a crystal‐to‐crystal transformation that is accompanied by spinodal demixing of the triethylene glycol containing precursor structure. Selective binding of a capping agent can be used to tune the particle shape of the MOP nanocrystals.
Total Synthesis of Leucosceptroids A and B
Authors: Guo Sheng , Liu Jie , Ma Dawei 
Published: December 2014

AbstractLeucosceptroids A and B are sesterterpenoids with potent antifeedant and antifungal activities. A more efficient gram‐scale total synthesis of leucosceptroid B and the first total synthesis of leucosceptroid A are presented. The key transformations include an aldol reaction between a substituted dihydrofuranone and an (S)‐citronellal‐derived aldehyde, a SmI2‐mediated intramolecular ketyl–olefin radical cyclization, and final‐stage alcohol oxidation.
Experimental analysis of the influence of pellet shape on single screw extrusion
Authors: Längauer Manuel , Liu Keyan , Kneidinger Christian , Schaffler Gernot , Purgleitner Bianca , Zitzenbacher Gernot 
Published: December 2014

ABSTRACTExtrusion technology is one of the most prominent methods for processing polymers. The shape of polymer pellets plays an important role in conveying solid material through the extruder and thus directly influences the mass flow rate. In the course of this article, the influence of the pellet shape of a polypropylene homopolymer on the processing conditions using a smooth barrel single‐screw extruder is evaluated. Especially the mass flow rate, the melt temperature, and the pressure build up in the barrel are investigated. It can be shown that processing long cylindrical pellets leads to a higher mass flow rate than comparable experiments with virgin pellets or short cylinders. Additionally, screw cool and pull‐out tests, measurements of the external coefficient of friction as well as the bulk density of the different pellet geometries are performed. The interaction of the screw geometry and the pellet shape is found to have the biggest influence. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41716.
Biologische Invasionen
Authors: Kegel Bernhard 
Published: December 2014

AbstractDie Verschleppung von fremden Pflanzen‐ und Tierarten durch den Menschen ist eines der größten Umweltprobleme unserer Zeit. Nach einer Phase der Akklimatisation, der bewussten Einführung fremder Arten, erfolgt die Verbreitung heute durch Gefangenschaftsflüchtlinge und “blinde Passagiere”. Nur ein kleiner Teil dieser Neobiota kann sich in den Empfängerländern halten und noch weniger werden invasiv und entwickeln sich zu Schädlingen. Die ökologischen und ökonomischen Schäden sind trotzdem immens und erfordern nicht selten drastische und teure Bekämpfungsmaßnahmen.
Der Asiatische Marienkäfer als Modell
Authors: Vilcinskas Andreas , Schmidtberg Henrike 
Published: December 2014

AbstractDer Asiatische Marienkäfer Harmonia axyridis hat in der Invasionsbiologie eine prominente Stellung als Modell eingenommen, da er besonders geeignet ist, um Hypothesen zu prüfen, die das erfolgreiche Ausbreiten von eingeführten Arten erklären. Aktuelle Forschungen implizieren, dass er mit Parasiten assoziiert ist, die auch einheimische Marienkäfer infizieren können, wenn diese seine Eier oder Larven fressen. Neben diesen “Biowaffen” reichert er in seiner Hämolymphe auch kleine Moleküle an, die als chemische Waffen gegen Krankheitserreger und Fressfeinde dienen. Die Anwendung modernen genetischer Methoden soll die Anpassungen auf molekularer Ebene entschlüsseln, die seinen invasiven Erfolg vermitteln.
Eingeschleppt und eingewandert: Neozoen und stürmische Arealerweiterer
Authors: Petrischak Hannes 
Published: December 2014

AbstractViele Arten, die mit oder ohne aktive Hilfe des Menschen in neue Regionen vordringen, breiten sich bevorzugt im Siedlungsbereich aus. Im Umfeld der Häuser liefern höhere Temperaturen und ein gutes Nahrungsangebot ideale Voraussetzungen, um sich in der fremden Umgebung zu etablieren. Während Neozoen gezielt oder unabsichtlich aus der Ferne eingeschleppt worden sind, erweitern einige Tiere aus eigener Kraft ihre Areale. Die meisten von ihnen stammen aus dem Mittelmeergebiet.
Malignant peripheral nerve sheath tumor of the third eyelid in a 3‐year‐old Rhodesian Ridgeback
Authors: vom Hagen Franziska , Romkes Gwendolyna , Kershaw Olivia , Eule J. Corinna 
Published: December 2014

Key Clinical MessageA 3‐year‐old Rhodesian Ridgeback was presented with conjunctivitis, enlargement of the third eyelid and a dorsotemporal deviation of the right eye. A mass within the third eyelid was detected and excised. The histopathologic examination showed a malignant peripheral nerve sheath tumor, which most likely is a neurofibrosarcoma based on immunohistochemistry.
Kinetics Analysis of Heterogeneous Oxidation of Coal Particles in Supercritical Water
Authors: Ma Honghe , Wang Shuzhong , Zhou Lu , Ma Suxia , Fan Jiang , Xu Donghai 
Published: December 2014

AbstractLittle research has been conducted on the heterogeneous kinetics of coal oxidation in supercritical water (SCW). Therefore, the oxidation of coal particles in SCW coupled with heat and mass transfer was investigated. The real coal particle temperature was estimated in terms of a simplified heat balance. With increasing particle temperature, the rate‐limiting step of the oxidation reaction gradually changed from the surface reaction to the mass transfer of oxygen. According to this result, the reaction rate model was built. The model could be used to predict the quantitative relationship among the particle size, the particle temperature, and the time to complete oxidation.
ChemInform Abstract: Endohedrally Filled [Ni@Sn9]4‐and [Co@Sn9]5‐Clusters in the Neat Solids Na12Ni1‐xSn17 and K13‐xCo1‐xSn17: Crystal Structure and 119Sn Solid‐State NMR Spectroscopy.
Authors: Hlukhyy Viktor , Stegmaier Saskia , van Wuellen Leo , Faessler Thomas F. 
Published: December 2014

AbstractThe title Zintl phases are prepared by reactions of the corresponding elemental alkali metals with pre‐prepared M‐Sn alloys (M: Ni, Co) at 550—880 °C for 48 h.
ChemInform Abstract: Design and Synthesis of a New Layered Thermoelectric Material LaPbBiS3O.
Authors: Sun Yun‐Lei , Ablimit Abduweli , Zhai Hui‐Fei , Bao Jin‐Ke , Tang Zhang‐Tu , Wang Xin‐Bo , Wang Nan‐Lin , Feng Chun‐Mu , Cao Guang‐Han 
Published: December 2014

AbstractThe quinary oxysulfide LaPbBiS3O is prepared by solid state reaction of a stoichiometric mixture of La2S3, Bi2S3, and PbO (evacuated quartz tube, 940 K, 25 h).
ChemInform Abstract: C@KCu7S4 Microstructure for Solid‐State Supercapacitors.
Authors: Dai Shuge , Xi Yi , Hu Chenguo , Hu Baoshan , Yue Xule , Cheng Lu , Wang Guo 
Published: December 2014

AbstractThe hybrid supercapacitor based on a carbon‐coated KCu7S4 electrode shows outstanding electrochemical performances with a large specific capacitance of 352 F/g at the scan rate of 10 mV/s, high energy density of 26.2 W h/kg, and high power density of 994.8 W/kg.
ChemInform Abstract: Hypervalent Iodine Catalyzed Cyclization of Aryl‐Substituted Alkanoic Acids.
Authors: Li Tingting , Xiang Changbin , Zhang Bijun , Yan Jie 
Published: December 2014

AbstractAryl‐substituted lactones (II), (IV), and (VI) are directly prepared from corresponding aryl‐substituted alkanoic acids, catalyzed by in situ generated hypervalent iodine intermediate from iodobenzene.
ChemInform Abstract: Photocatalytic Hydrogenation of Alkenes to Alkanes in Alcoholic Suspensions of Palladium‐Loaded Titanium(IV) Oxide Without the Use of Hydrogen Gas.
Authors: Imamura Kazuya , Okubo Yuki , Ito Tomohiko , Tanaka Atsuhiro , Hashimoto Keiji , Kominami Hiroshi 
Published: December 2014

AbstractAlkenes [(I), (II), (V), and (VI)] are hydrogenated to the corresponding alkanes by utilization of photocatalytically formed H species as hydrogenating agents.
ChemInform Abstract: Pd—Co Bimetallic Nanoparticles Supported on Graphene as a Highly Active Catalyst for Suzuki—Miyaura and Sonogashira Cross‐Coupling Reactions.
Authors: Feng Yi‐Si , Lin Xin‐Yan , Hao Jian , Xu Hua‐Jian 
Published: December 2014

AbstractThe catalyst can be recycled and reused at least 5 times with only a slight decrease in conversion.
ChemInform Abstract: Direct Synthesis of α‐Ketothioamides from Aryl Methyl Ketones and Amines via I2‐Promoted sp3 C—H Functionalization.
Authors: Li Hong‐Zheng , Xue Wei‐Jian , Wu An‐Xin 
Published: December 2014

AbstractThe important synthons are readily available in the presence of NaSH.
ChemInform Abstract: A Facial Protocol for the Synthesis of Benzofuran Derivatives by the Reaction of o‐Hydroxy Aryl Ketone, Amine and Chloroacetyl Chloride.
Authors: Xia Shuai , Wang Xiu‐Hua , Liu Ji‐Qiang , Liu Chang , Chen Jian‐Bin , Zuo Hua , Xie Yong‐Sheng , Dong Wen‐Liang , Shin Dong‐Soo 
Published: December 2014

AbstractThe title compounds (V) are obtained by N‐acylation, O‐alkylation, and intramolecular condensation reactions starting from readily available substituted o‐hydroxy aryl ketones and chloroacetyl arylamides under mild reaction conditions.
ChemInform Abstract: Synthesis of [1]Benzothieno[3,2‐b][1]benzothiophene (BTBT) (Va) and Its Higher Homologs [ct.(VI)] Through Palladium‐Catalyzed Intramolecular Decarboxylative Arylation.
Authors: Minami Sojiro , Hirano Koji , Satoh Tetsuya , Miura Masahiro 
Published: December 2014

Abstract6 examples
ChemInform Abstract: One‐Pot Synthesis of 4H‐Chromenes by Tandem Benzylation and Cyclization in the Presence of Sodium Bisulfate on Silica Gel.
Authors: Aoyama Tadashi , Yamamoto Takumi , Miyota Saki , Hayakawa Mamiko , Takido Toshio , Kodomari Mitsuo 
Published: December 2014

AbstractApplication of 1,3‐di‐tert‐butylpentan‐1,3‐dione as the diketone or 2‐(hydroxy‐tert‐butyl‐methyl)phenol as the o‐hydroxybenzylic alcohol fails to give the desired chromenes.
ChemInform Abstract: Efficient Solvent‐Free Synthesis of Benzothiazine‐Fused Pyrrolo[3,4‐c]coumarins: Cycloaddition Reactions Between Coumarin‐Based Dihydrobenzothiazoles and Isocyanides.
Authors: Khoobi Mehdi , Ramazani Ali , Mahdavi Mohammad , Foroumadi Alireza , Emami Saeed , Joo Sang Woo , Slepokura Katarzyna , Lis Tadeusz , Shafiee Abbas 
Published: December 2014

AbstractA new and unusual method for the synthesis of the title compounds (III) (8 examples) is developed involving ring‐opening of coumarin‐based dihydrobenzothiazoles (I) and subsequent [4 + 1] cycloaddition reaction with isocyanides (II).
ChemInform Abstract: Synthesis of a Vinylchlorine‐Containing 1,3‐Diol from a Marine Cyanophyte.
Authors: Wang Xiao‐Long , Yang Yang‐Yang , Chen Hui‐Jun , Wu Yikang , Ma Dong‐Sheng 
Published: December 2014

AbstractThe stereoselective synthesis of the title diol (6R,8S)‐(E)‐1‐chlorotridec‐1‐ene‐6,8‐diol (I) and its (6R,8R)‐diastereomer (II) is described.
ChemInform Abstract: Nanoalloy Catalysts for Electrochemical Energy Conversion and Storage Reactions
Authors: Shan Shiyao , Luo Jin , Wu Jinfang , Kang Ning , Zhao Wei , Cronk Hannah , Zhao Yinguang , Joseph Pharrah , Petkov Valeri , Zhong Chuan‐Jian 
Published: December 2014

AbstractReview: focus on Pt‐based nanoalloys; 132 refs.
ChemInform Abstract: Structure Design and Performance of LiNixCoyMn1‐x‐yO2 Cathode Materials for Lithium‐Ion Batteries: A Review
Authors: Zhao Xinru , Wang Jinxian , Dong Xiangting , Liu Guixia , Yu Wensheng , Wang Limin 
Published: December 2014

AbstractReview: 76 refs.
ChemInform Abstract: 2‐Amino‐3‐cyanopyridine: a Bioactive Scaffold
Authors: Manna Kuntal , Ghosh Partha Sakha , Das Manik , Banik Udayan , Das Ashish 
Published: December 2014

AbstractReview: recent developments in the synthesis from chalcones/aldehydes and ketones and heir use in pharmacology as bioactive scaffolds; 32 refs.
ChemInform Abstract: Coupling of Single, Double, and Triple‐Decker Metal‐Phthalocyanine Complexes to Ferromagnetic and Antiferromagnetic Substrates
Authors: Lodi Rizzini Alberto , Krull Cornelius , Mugarza Aitor , Balashov Timofey , Nistor Corneliu , Piquerel Raoul , Klyatskaya Svetlana , Ruben Mario , Sheverdyaeva Polina M. , Moras Paolo , et al. et al. 
Published: December 2014

AbstractReview: 111 refs.
Bio‐Based Nitriles from the Heterogeneously Catalyzed Oxidative Decarboxylation of Amino Acids
Authors: Claes Laurens , Matthessen Roman , Rombouts Ine , Stassen Ivo , De Baerdemaeker Trees , Depla Diederik , Delcour Jan A. , Lagrain Bert , De Vos Dirk E. 
Published: December 2014

AbstractThe oxidative decarboxylation of amino acids to nitriles was achieved in aqueous solution by in situ halide oxidation using catalytic amounts of tungstate exchanged on a [Ni,Al] layered double hydroxide (LDH), NH4Br, and H2O2 as the terminal oxidant. Both halide oxidation and oxidative decarboxylation were facilitated by proximity effects between the reactants and the LDH catalyst. A wide range of amino acids was converted with high yields, often >90 %. The nitrile selectivity was excellent, and the system is compatible with amide, alcohol, and in particular carboxylic acid, amine, and guanidine functional groups after appropriate neutralization. This heterogeneous catalytic system was applied successfully to convert a protein‐rich byproduct from the starch industry into useful bio‐based N‐containing chemicals.
Cross‐Metathesis of Biosourced Fatty Acid Derivatives: A Step Further Toward Improved Reactivity
Authors: Vignon Paul , Vancompernolle Tom , Couturier Jean‐Luc , Dubois Jean‐Luc , Mortreux André , Gauvin Régis M. 
Published: December 2014

AbstractThe improved catalytic conversion of bioresources, namely unsaturated fatty acid derivatives, is presented. The targeted reaction is ruthenium‐catalyzed cross‐metathesis with functionalized olefins (α,β‐unsaturated esters), that affords shorter diesters. These can be used as biosourced (pre)monomers for the production of polyesters. It is demonstrated that switch from terminal to internal cross‐metathesis partners (that is, from methyl acrylate to methyl crotonate) allows use of ppm‐level catalyst loadings, while retaining high productivity and selectivity. This was exemplified on a commercial biosourced fatty acid methyl esters mixture, using minimal purification of the substrate, on a 50 g scale. We propose that this improved catalytic behavior is due to the sole presence of more stable alkylidene intermediates, as the notoriously unstable ruthenium methylidene species are not formed using an internal functionalized olefin.
When to increase or reduce sodium loading in the management of fluid volume status during acute decompensated heart failure
Authors: Hirotani Shinichi , Masuyama Tohru 
Published: December 2014

AbstractSodium restriction has been believed to be indispensible to manage fluid overload during acute decompensated heart failure (ADHF). However, recently, it was reported that a change in aggression of sodium and water restriction did not affect the outcome of ADHF. In contrast, current data suggest that small amount of hypertonic saline solution with high‐dose furosemide produces an improvement in haemodynamic and clinical parameters without any severe adverse effects. In this perspective, first, we are going to describe the effects of sodium loading on neurohormonal activation, body's sodium balance, and renal function in chronic heart failure and the efficacy of loop diuretics in ADHF. Then, we are going to explain the possible mechanisms by which sodium loading enhances the efficacy of loop diuretics and about the clinical conditions during which sodium loading should be avoided.
Comparing the effects of tetrabromobisphenol-A, bisphenol A, and their potential replacement alternatives, TBBPA-bis(2,3-dibromopropyl ether) and bisphenol S, on cell viability and messenger ribonucleic acid expression in chicken embryonic hepatocytes
Authors: Ma Melissa , Crump Doug , Farmahin Reza , Kennedy Sean W. 
Published: December 2014

Abstract

A market for alternative brominated flame retardants (BFRs) has emerged recently due to the phase out of persistent and inherently toxic BFRs. Several of these replacement compounds have been detected in environmental matrices, including wild birds. A chicken embryonic hepatocyte (CEH) assay was utilized to assess the effects of the BFR, tetrabromobisphenol-A (TBBPA), and its replacement alternative, tetrabromobisphenol A bis(2,3-dibromopropyl ether [TBBPA-DBPE]) on cell viability and messenger ribonucleic acid (mRNA) expression. Bisphenol A (BPA) and 1 of its replacement alternatives, bisphenol S (BPS), were also screened for effects. Both TBBPA and BPA decreased CEH viability with calculated median lethal concentration (LC50) values of 40.6 μM and 61.7 μM, respectively. However, the replacement alternatives, TBBPA-DBPE and BPS, did not affect cell viability (up to 300 μM). Effects on mRNA expression were determined using an Avian ToxChip polymerse chain reaction (PCR) array and a real-time (RT)-PCR assay for the estrogen-responsive genes, apolipoproteinII (ApoII) and vitellogenin (Vtg). A luciferase reporter gene assay was used to assess dioxin-like effects. Tetrabromobisphenol-A altered mRNA levels of 4 genes from multiple toxicity pathways and increased luciferase activity in the luciferase reporter gene assay, whereas its alternative, TBBPA-DBPE, only altered 1 gene on the array, Cyp1a4, and increased luciferase activity. At 300 μM, a concentration that decreased cell viability for TBBPA and BPA, the BPA replacement, BPS, altered the greatest number of transcripts, including both ApoII and Vtg. Bisphenol A exposure did not alter any genes on the array but did up-regulate Vtg at 10 μM. Characterization of the potential toxicological and molecular-level effects of these compounds will ideally be useful to chemical regulators tasked with assessing the risk of new and existing chemicals. Environ Toxicol Chem 2014;9999:1–11. © 2014 SETAC