bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self‐Organization of a Highly Integrated Silicon Nanowire Network on a Si(110)–16 × 2 Surface by Controlling Domain Growth
Authors: Hong Ie‐Hong , Liao Yen‐Chieh , Yen Shang‐Chieh 
Published: October 2009

AbstractHere, bottom‐up nanofabrication for the two‐dimensional self‐organization of a highly integrated, well‐defined silicon nanowire (SiNW) mesh on a naturally‐patterned Si(110)–16 × 2 surface by controlling the lateral growths of two non‐orthogonal 16 × 2 domains is reported. This self‐ordered nanomesh consists of two crossed arrays of parallel‐aligned SiNWs with nearly identical widths of 1.8–2.5 nm and pitches of 5.0–5.9 nm, and is formed over a mesoscopic area of 300 × 270 nm2 so as to show a high integration density in excess of 104 µm−2. These crossed SiNWs exhibit semiconducting character with an equal band gap of ∼0.95 eV as well as unique quantum confinement effect. Such an ultrahigh‐density SiNW network can serve as a versatile nanotemplate for nanofabrication and nanointegration of the highly‐integrated metal‐silicide or molecular crossbar nanomesh on Si(110) surface for a broad range of device applications. Also, the multi‐layer, vertically‐stacked SiNW networks can be self‐assembled through hierarchical growth, which opens the possibility for creating three‐dimensionally interconnected crossbar circuits. The ability to self‐organize an ultrahigh‐density, functional SiNW network on a Si(110) surface represents a simple step toward the fabrication of highly‐integrated crossbar nanocircuits in a very straightforward, fast, cost‐effective, and high throughput process.
Use of Commercially Available Ruthenium Fischer‐Type Carbenes for Ring‐Closing Metathesis Reactions: Scope and Limitations of an in situ Activation Procedure
Authors: Wallace Debra J. 
Published: October 2009

AbstractAn evaluation of two commercially available Fischer‐type ruthenium carbenes in a range of ring‐closing diene and enyne metathesis reactions has been carried out. A method to activate such catalysts for ring‐closing reactions is presented.
Palladium‐Catalyzed Isomerization of exo‐Methylenic Allylic Alcohols
Authors: Fordred Paul S. , Niyadurupola D. Gangani , Wisedale Richard , Bull Steven D. 
Published: October 2009

AbstractTreatment of allylic alcohols containing a 1,1‐disubstituted alkene with a palladium catalyst and hydrogen gas (1 bar) results in facile isomerization to their corresponding trisubstituted (E)‐allylic alcohols, along with small amounts of the corresponding hydrogenated products.
Efficient Solvent‐Free Robinson Annulation Protocols for the Highly Enantioselective Synthesis of the Wieland–Miescher Ketone and Analogues
Authors: Bradshaw Ben , Etxebarría‐Jardi Gorka , Bonjoch Josep , Viózquez Santiago F. , Guillena Gabriela , Nájera Carmen 
Published: October 2009

AbstractA highly efficient (93% overall yield) and enantioselective (94% ee) synthesis of the Wieland–Miescher ketone (10‐g scale) through a solvent‐free Robinson annulation procedure is reported. The process involves only 1 mol% triethylamine as the base in the initial Michael process and the organocatalyst N‐tosyl‐(Sa)‐binam‐L‐prolinamide (2 mol%) and benzoic acid (0.5 mol%) for the intramolecular aldol process. This green protocol is applied to a wide range of valuable building block analogues of the Wieland–Miescher ketone (10 examples). Among these, a noteworthy compound for terpene synthesis is the 8a‐allyl derivative, which is prepared in 93% yield and 97% ee in a process allowing the recovery and reutilization of the organocatalyst. Furthermore, a one‐pot, two‐step process has also been developed.
Immobilization of Porphyrinatocopper Nanoparticles onto Activated Multi‐Walled Carbon Nanotubes and a Study of its Catalytic Activity as an Efficient Heterogeneous Catalyst for a Click Approach to the Three‐Component Synthesis of 1,2,3‐Triazoles in Water
Authors: Sharghi Hashem , Beyzavi Mohammad Hassan , Safavi Afsaneh , Doroodmand Mohammad Mahdi , Khalifeh Reza 
Published: October 2009

AbstractAn efficient, regioselective, one‐pot and two‐step synthesis of β‐hydroxy 1,4‐disubstituted 1,2,3‐triazoles from a wide range of non‐activated terminal alkynes and epoxides and sodium azide by way of a three‐component click reaction using a catalytic amount of [meso‐tetrakis(o‐chlorophenyl)porphyrinato]copper(II) (5 mol%) in excellent isolated yields is described. The reactions were performed in water as a green solvent at ambient temperature without any additives. By performing two reaction steps in one pot and purifying only at the final step, this procedure excludes any interim purification of in situ generated organic azide intermediates, which significantly improves the overall yield and reduces the reaction time. To benefit from the recovery and reuse of the catalyst, a new heterogeneous catalyst was prepared by simple and successful impregnation of the catalyst onto activated multi‐walled carbon nanotubes (AMWCNT). The heterogeneous catalyst was characterized by powder X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic forced microscopy (AFM), and thermogravimetric (TG) analysis to estimate the amount of nitrogen adsorption, and Raman and FT‐IR spectroscopy. Leaching experiments after ten successive cycles showed that the catalyst is most strongly anchored to the AMWCNT support. Mechanistically, porphyrinatocopper catalyzes each step of the reaction in different ways as a bifunctional catalyst including epoxide ring opening by azide delivery to epoxide, forming in situ generated 2‐azido alcohols followed by activation of the CC triple bond of the starting terminal alkynes by forming a porphyrinatocopper‐acetylide intermediate and thereby promoting the [3+2]‐cycloaddition reaction as the key step to form the triazole framework.
Continuous Hydrogen Generation from Formic Acid: Highly Active and Stable Ruthenium Catalysts
Authors: Boddien Albert , Loges Björn , Junge Henrik , Gärtner Felix , Noyes James R. , Beller Matthias 
Published: October 2009

AbstractThe ruthenium‐catalyzed decomposition of formic acid was investigated with respect to continuous hydrogen generation and long‐term stability of the catalytic systems. A highly active and stable system is presented, which was studied in batch and continuous modes for up to two months. The optimized catalyst system containing N,N‐dimethyl‐n‐hexylamine with an in situ generated catalyst from (benzene)ruthenium dichloride dimer [RuCl2(benzene)]2 and 6 equivalents of 1,2‐bis(diphenylphosphino)ethane (dppe) reached at room temperature a total turnover number (TON) of approximatly 260,000 with average turnover frequency (TOF) of about 900 h−1. Only hydrogen and carbon dioxide were detected in the produced gas mixture which makes this system applicable for direct use in fuel cells.
Homobenzotetramisole‐Catalyzed Kinetic Resolution of α‐Aryl‐, α‐Aryloxy‐, and α‐Arylthioalkanoic Acids
Authors: Yang Xing , Birman Vladimir B. 
Published: October 2009

AbstractEffective kinetic resolutions of α‐aryl‐, α‐aryloxy‐, and α‐arylthioalkanoic acids have been achieved via in situ generation of their symmetrical anhydrides and enantioselective alcoholysis in the presence of homobenzotetramisole (HBTM) 3.
Efficient Propargylation of Aldehydes and Ketones Catalyzed by Titanocene(III)
Authors: Justicia José , Sancho‐Sanz Iris , Álvarez‐Manzaneda Enrique , Oltra J. Enrique , Cuerva Juan M. 
Published: October 2009

AbstractWe describe a novel method for the propargylation of a wide range of aldehydes and ketones catalyzed by titanocene(III) complexes under mild reaction conditions and compatible with many functional groups. Homopropargylic alcohols are obtained as the sole products even when ketones are used as starting materials, which is unusual in Barbier‐type propargylations.
Spectral characterization of static mixers. The S‐shaped micromixer as a case study
Authors: Garofalo F. , Adrover A. , Cerbelli S. , Giona M. 
Published: October 2009

AbstractWe investigate the steady‐state performance of a planar micromixer composed of several S‐shaped units. Mixing efficiency is quantified by the decay of the scalar variance downstream the device for generic feeding conditions. We discuss how this decay is controlled by the spectral properties of the advection‐diffusion Floquet operator,
$ \cal F $, that maps a generic scalar profile at the inlet of a single unit into the corresponding profile at the unit outlet section. Two advantages characterize the Floquet operator approach —(i) it allows to analyze an arbitrarily long device and (ii) it provides a quantitative assessment of mixing efficiency that is independent of the feeding conditions and that depends solely on the interaction between advection and diffusion. © 2009 American Institute of Chemical Engineers AIChE J, 2010
Worldly Perspectives: Egypt
Authors: De Palo Giuseppe , Trevor Mary B. 
Published: October 2009

AbstractA new monthly column looks at business ADR in countries around the world. Designed for international practitioners who may be doing business “over there,” Giuseppe De Palo of Rome, and Mary B. Trevor, of St. Paul, Minn., analyze the state of commercial conflict resolution, going beyond the default international arbitration practices, to the potential for true alternatives with cost savings and better results. The column opens this month in Egypt, with more Middle East later this quarter.
Polymeric Janus Particles
Authors: Wurm Frederik , Kilbinger Andreas F. M. 
Published: October 2009

AbstractSince de Gennes’ Nobel lecture in 1991, in which he coined the term “Janus grains”, research into asymmetric particles has boomed. Macroscopic, microscopic and nanoscopic particles have been prepared in which certain parts of their surface differ in chemical composition, polarity, color, or any other property. Spherical, cylindrical, disc‐like, snowman‐, hamburger‐, and raspberry‐like structures have been synthesized from organic or inorganic materials or even as hybrids of both. Synthetic strategies towards such particles vary greatly from simple polymer mixtures to the bulk self‐assembly of sophisticated terpolymers to immobilization methods of symmetric particles. Polymeric Janus particles are particularly promising, as they can often be prepared cheaply and sometimes even on larger scales.
Histological, Immunocytochemical, and Morphometrical Analyses of Pancreatic Islets in the BSB Mouse Model of Obesity
Authors: Slavin Bernard G. , Zarow Chris , Warden Craig H. , Fisler Janis S. 
Published: October 2009

AbstractThis article presents biochemical data on the BSB mouse model of multigenic obesity indicating increased percentage body fat, increased fasting plasma insulin, and increased insulin resistance in male and female obese mice compared with lean controls. Plasma glucose was significantly increased only in male obese mice. Morphological and morphometrical analyses of pancreatic islets showed increased islet size and number in all obese mice compared with lean controls. Immuno‐staining results for insulin‐positive islet cells showed greater levels of insulin in male and female obese versus lean mice, while the percent or proportion of insulin immuno‐staining, as expected, was not significantly different between obese and lean. The percent or proportion of immuno‐staining for islet glucagon and somatostatin showed reduced staining in islets from obese compared with lean mice. The significance of these findings shows, for the first time, the morphologic appearance of pancreatic islets and the quantitative distribution of the three major islet cell hormonal populations in BSB obese mice. The correlation between this descriptive information and physiological data might lend insights to the cause of obesity‐related diabetes. Anat Rec, 2010. © 2009 Wiley‐Liss, Inc.
Effects of fatty acids on metabolism and cell growth of human colon cell lines of different transformation state
Authors: Habermann Nina , Christian Bernd , Luckas Bernd , Pool‐Zobel Beatrice L. , Lund Elizabeth K. , Glei Michael 
Published: October 2009

AbstractEpidemiological studies suggest that high fish intake is associated with a decreased risk of colorectal cancer which has been linked to the high content of the n − 3 polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in some fish. In this study, two different cell lines are compared in relation to their response to EPA and DHA versus the plant derived PUFAs, linoleic acid (LA), γ‐linolenic acid (GLA), and α‐linolenic acid (ALA) and to the ubiquitous arachidonic acid (ARA). The uptake of 100 μM of each fatty acid (FA) was determined using GC. The 4′,6‐diamidino‐2‐phenylindole assay for DNA quantification and the Cell‐Titer‐Blue™ assay were used to determine cell survival and metabolic activity at 2–72 h after treatment. All FAs were utilized more efficiently by the human colon adenoma cell line LT97 than by the adenocarcinoma cell line HT29. LT97 were more susceptible than HT29 cells to the growth inhibitory activities of all FAs except for DHA where both were equally sensitive. Inhibition of survival and metabolic activity by EPA and DHA increased with treatment time in both cell lines. ALA or GLA were less growth inhibitory than EPA or DHA and ARA had intermediary activity. The data show that the tested FAs are incorporated into colon cells. Furthermore, adenoma cells are more susceptible than the adenocarcinoma cells. © 2009 International Union of Biochemistry and Molecular Biology, Inc.
Combining Medium Effects and Cofactor Catalysis: Metal‐Coordinated Synzymes Accelerate Phosphate Transfer by 108
Authors: Avenier Frédéric , Hollfelder Florian 
Published: October 2009

AbstractThe systematic exploration of the modification of polyethylene imine with guanidinium and octyl groups has led to the identification of a catalyst, CD6, which accelerates the phosphate transfer reaction of HPNP (2‐hydroxypropyl‐4‐nitrophenyl phosphate) in the presence of divalent metals such as Zn2+, Co2+, Mg2+ or Ni2+. CD6 exhibits saturation kinetics that are described by Michaelis–Menten parameters Km ranging from 2.5–8 mM and kcat ranging from 0.0014–0.09 s−1. For ZnII–CD6 this corresponds to an overall acceleration kcat/kuncat of 3.8×105 and a catalytic proficiency (kcat/Km)/kuncat of 1.5×108. Catalysis by ZnII–CD6 is specifically inhibited by inorganic phosphate, allowing turnover regulation by product inhibition. This effect stands in contrast to ZnII‐catalysed transesterification of HPNP in water or by the synzymes CoII–CD6 and NiII–CD6, with which no such interference by product is observed. These characteristics render synzyme ZnII–CD6 an efficient enzyme model that reflects enzyme‐like properties in a wide range of features.
ChemInform Abstract: Theoretical Study of Mg+—X and [X—Mg—Y]+ Complexes Important in the Chemistry of Ionospheric Magnesium (X, Y: H2O, CO2, N2, O2, and O).
Authors: Plowright Richard J. , McDonnell Thomas J. , Wright Timothy G. , Plane John M. C. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Neutron Diffraction Study of the in situ Oxidation of UO2.
Authors: Desgranges Lionel , Baldinozzi Gianguido , Rousseau Gurvan , Niepce Jean‐Claude , Calvarin Gilbert 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: SQUID Magnetometry, EPR and XPS Characterization of Y3Al5O12: Co, Si Single Crystals.
Authors: Talik E. , Szubka M. , Skrzypek D. , Zarek W. , Kusz J. , Lukasiewicz T. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Second‐Harmonic Generation and Crystal Structure of the Diamond‐Like Semiconductors Li2CdGeS4 and Li2CdSnS4.
Authors: Lekse Jonathan W. , Moreau Meghann A. , McNerny Katie L. , Yeon Jeongho , Halasyamani P. Shiv , Aitken Jennifer A. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Topotactic Transformation of the Cationic Conductor Li4Mo5O17 into a Rock Salt Type Oxide Li12Mo5O17.
Authors: Pop N. , Pralong V. , Caignaert V. , Colin J. F. , Malo S. , Van Tendeloo G. , Raveau B. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ferromagnetism and Magnetocaloric Effect Around 95 K in the Laves Phase EuRh1.2Zn0.8.
Authors: Hermes Wilfried , Harmening Thomas , Poettgen Rainer 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: An Unusual Binary Phosphorus—Tellurium Anion and Its Seleno‐ and Thio‐Analogues: P4Ch22‐ (Ch: S, Se, Te).
Authors: Rotter Christiane , Schuster Michael , Karaghiosoff Konstantin 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Novel Metallo‐Organically Templated Pentaborate: Acetato[N,N′‐bis(2‐aminoethyl)ethane‐1,2‐diamine]zinc(II) 4,4′,6,6′‐Tetrahydroxy‐2,2′‐spirobi[cyclotriboroxane] (1‐).
Authors: Wu Shu‐Li , Liu Huan‐Xin , Jiang Xiao , Shao Zhi‐Dong , Liang Yun‐Xiao 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: (Sr1‐xCax)(11+16y‐25z)/2 (Si1‐yAly)16 (N1‐zOz)25 (x = 0.24, y = 0.18, z = 0.19). A Novel Sialon with a Highly Condensed Silicate Framework.
Authors: Kechele Juliane A. , Oeckler Oliver , Schmidt Peter J. , Schnick Wolfgang 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Series of New Infrared NLO Semiconductors, ZnY6Si2S14, AlxDy3(SiyAl1‐y)S7, and Al0.33Sm3SiS7.
Authors: Guo Sheng‐Ping , Guo Guo‐Cong , Wang Ming‐Sheng , Zou Jian‐Ping , Xu Gang , Wang Guo‐Jian , Long Xi‐Fa , Huang Jin‐Shun 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Na10(Na,Mn)7Mn43 (PO4)36: A New Synthetic Fillowite‐Type Phosphate.
Authors: Hatert Frederic , Keller Paul , Lissner Falk , Schleid Thomas 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Indium‐Based Perovskites: A New Class of Near‐Room‐Temperature Multiferroics.
Authors: Belik Alexei A. , Furubayashi Takao , Matsushita Yoshitaka , Tanaka Masahiko , Hishita Shunichi , Takayama‐Muromachi Eiji 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Combination of a Binaphthol‐Derived Phosphite and a C1‐Symmetric Phosphinamine Generates Heteroleptic Catalysts in Rh‐ and Pd‐Mediated Reactions.
Authors: Pignataro Luca , Lynikaite Benita , Colombo Raffaele , Carboni Stefano , Krupicka Martin , Piarulli Umberto , Gennari Cesare 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Enantioselective Reduction of Prochiral Ketones Employing Sprouted Pisum sativa as Biocatalyst.
Authors: Yadav Jhillu S. , Reddy Basi V. Subba , Sreelakshmi Chittamuru , Rao Adari Bhaskar 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Enantioselective Diels—Alder Reaction Catalyzed by Chiral Imidazolidinone.
Authors: Wang Yongjiang , Xu Xiaoliang , Pei Wen 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Solvent‐Free Condensations of Ketones with Malononitrile Catalyzed by Methanesulfonic Acid/Morpholine System.
Authors: Gora M. , Kozik B. , Jamrozy K. , Luczynski M. K. , Brzuzan P. , Wozny M. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Gold(I) Catalysis: Selective Synthesis of Six‐ or Seven‐Membered Heterocycles from Epoxy Alkynes.
Authors: Dai Lun Zhi , Shi Min 
Published: October 2009

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