bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fluorescencing behavior of thin solid films based on polyelectrolyte‐surfactant complex and dye molecules
Authors: Seliverstova Evgeniya , Ibrayev Niyaz , Kudaibergenov Sarkyt 
Published: November 2012

AbstractThis article is devoted to investigation of interaction between polycomplex and dye molecules assembled in fluorescent thin solid Langmuir‐Blodgett (LB) films. Preparation procedure of organosoluble stoichiometric polycomplex based on cationic polyelectrolyte and anionic surfactant is described. Formation of mixed monolayers consisting of polyelectrolyte‐surfactant complex (PSC) and dye molecules–Nile Red (NR) at water‐air interface is shown. Assembling conditions of LB films based on PSC and NR are defined and the spectral‐luminescent properties of obtained films are studied. It is shown that when nonamphiphilic NR and PSC are mixed the excellent monolayers formed, which can easily be transferred onto solid substrates by Langmuir‐Blodgett method with a high transfer coefficient. Absorption and fluorescence spectra of mixed LB films reveal the formation of dimers and existence of monomers in LB films. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Student perspectives of imaging anatomy in undergraduate medical education
Authors: Machado Jorge Américo Dinis , Barbosa Joselina Maria Pinto , Ferreira Maria Amélia Duarte 
Published: November 2012

AbstractRadiological imaging is gaining relevance in the acquisition of competencies in clinical anatomy. The aim of this study was to evaluate the perceptions of medical students on teaching/learning of imaging anatomy as an integrated part of anatomical education. A questionnaire was designed to evaluate the perceptions of second‐year students participating in a clinical anatomy course over three consecutive academic years. A principal component analysis was used to evaluate the dimensionality of the questionnaire. The variables were summarized using frequencies, mean, median, 25th percentile, 75th percentile, minimum, and maximum. The results demonstrated that students felt the teaching of imaging anatomy influenced learning in the clinical anatomy course (mean = 4.5, median = 5.0) and subsequent clinical courses (mean = 4.4, median = 4.0). Regarding the imaging techniques used in the demonstration of anatomical structures, computed tomography (median = 5.0) and magnetic resonance imaging (median = 5.0) were highly rated. Students suggested the use of additional support material (37.6%) and favored a more practical approach. In conclusion, the results of this work highlight the value of imaging anatomy in learning human anatomy. Students' comments pointed out a need to focus teaching/learning programs toward a more practical rather than theoretical approach as well as a need to provide a better fit between sectional anatomy and clinical cases using imaging anatomy. In order to provide an optimal learning environment to students, it also seems important to create improved media material as an additional resource tool. Anat Sci Educ. © 2013 American Association of Anatomists.
Anforderungen an die Wärmedämmung der Gebäudehülle: ein Vergleich zwischen EnEV 2009 und EnEV 2007
Authors: Hänel Klaus , Brummack Sven 
Published: November 2012

AbstractIm Hinblick auf die Anforderungen an die Dämmung der Gebäudehülle hat sich ein Wechsel der Bezugsgrößen und Abhängigkeiten von der Energieeinsparverordnung (EnEV) 2007 zur EnEV 2009 vollzogen. Deshalb ist ein direkter Vergleich der beiden Vorschriften, zumindest bei Neubauten, nicht ohne weiteres möglich. Im folgenden Artikel wird die Möglichkeit eines allgemein gültigen Vergleichs der beiden Anforderungsniveaus untersucht. Daraus lassen sich für den Planer Schlüsse im Hinblick auf die Einhaltung der Anforderungen und deren Auswirkung auf den Entwurf und die Konstruktion ziehen. Abschnitt 1 behandelt dabei den Neubau von Wohngebäuden, Abschnitt 2 den Neubau von Nichtwohngebäuden und Abschnitt 3 die Bestandsgebäude.Comparison of the heat insulation requirements for building envelopes between EnEV 2007 and EnEV 2009. The heat insulation requirements for building envelopes depending on reference values and various conditions have been changed from EnEV 2007 (German Building Energy Conservation Ordinance) to EnEV 2009. Therefore, a direct comparison of both regulations is not possible, especially for new buildings. In this article the possibility of a generally valid comparison of both requirement levels is examined. Conclusions for the design of residential buildings, commercial buildings and refirbishment of existing buildings are given.
Systematischer Ansatz zur Abschätzung länderspezifischer Produktökoprofile am Beispiel Portlandzement
Authors: Colodel Cecilia Makishi , Sedlbauer Klaus , Eyerer Peter , Kranert Martin 
Published: November 2012

AbstractIn einer global vernetzten Marktwirtschaft beschränken sich die Herstellung und Anwendung verschiedener Baumaterialien nur noch selten auf einzelne Länder. Umweltprobleme nehmen weltweit zu und länderspezifische ökologische Produktprofile gewinnen immer mehr an Relevanz. Bei der Erstellung von Ökobilanzen werden aufgrund mangelhafter länderspezifischer ökologischer Daten die benötigen Daten zurzeit entweder direkt in dem zu untersuchenden Land über Literatur oder direkte Datenaufnahme erhoben oder es werden bereits vorhandene Daten von anderen Ländern ohne Anpassung komplett übernommen. Während technische Informationen, wie z. B. Prozessablauf, Druck, Temperatur, Ausgangsstoffe, übertragen werden können, kann bei der Ökobilanzierung der alleinige Austausch von Sachbilanzdaten in Fällen länderspezifischer Situationen zu falschen Ergebnissen und Schlüssen führen. Dieser Beitrag stellt einen systematischen Ansatz zur Abschätzung länderspezifischer Sachbilanzdaten dar und wendet ihn beispielhaft an einem Zementherstellungsprozess an. Die Verfügbarkeit der Länderindikatoren in Statistiken und die Möglichkeit qualitativ hochwertige realitätsnahe ökologische Produktprofile mit überschaubarem zeitlichen und finanziellen Aufwand zu erstellen, sind Vorteile dieser Methode.Systematic approach for the estimation of country‐specific product eco‐profile using the Portland cement as example. In a globalised world, where construction materials are produced and assembled in different countries, country‐specific eco‐profile gain even more relevance. Nevertheless, many countries still face the problem of having very few or no ecological product profiles at all, being often ‘forced’ to use data from other countries, e.g. European background data, in order to fill in their gaps or even for being able to perform a Life Cycle Assessment (LCA). Whereas methodology transfer among countries can take place, simply transfer of life cycle inventory data can lead to wrong results and conclusions. In this article, a systematic approach for the transferability of data between countries is proposed and applied on the Portland cement production process as example. The availability of country indicators data and the possibility of producing more appropriate country‐specific eco‐profiles with feasible time and effort can be seen as the main advantages of this approach.
“Wachstum” oder “Revolution”? Ernst Cassirer und die Wissenschaftsgeschichte
Authors: Ferrari Massimo 
Published: November 2012

Abstract“Growth” or “Revolution”? Ernst Cassirer and History of Science. Ernst Cassirer's contributions to history of science have been long time neglected. The aim of this paper is to show the historical and philosophical framework of Cassirer's engagement in this field, starting from his seminal work about the problem of knowledge in science and philosophy of the modern age. Moreover the author suggests that Cassirer's late studies about Galilei and the origins of mathematical science are of some interest in order to comprehend both his commitment to contemporary history of science (from Burtt to Koyré) and his intellectual heritage for our agendas in a post‐Kuhnian era.
Report on the Implementation and Results of an Outcomes‐focused Evaluation of Child Sexual Abuse Interventions in the UK
Authors: Coren Esther , Thomae Manuela , Hutchfield Jemeela , Iredale Wendy 
Published: November 2012

This paper presents the implications and findings of a longitudinal evaluation of a UK charity's network of therapeutic projects for their effectiveness in improving child outcomes following child sexual abuse. Eight intervention projects across England and Wales participated in this one group pre‐ and post‐test evaluation leading to a final sample of 42 children. We collected qualitative and quantitative data via the individual projects. These data included responses from the children's parents, the therapists and from the children themselves. The findings of this evaluation indicate improvements in the children's outcomes in some domains but persistence of problems in others. No deterioration was observed. We conclude the article by addressing the strengths and limitations of the evaluation and suggesting recommendations for future practitioner‐researcher collaborations. Copyright © 2012 John Wiley & Sons, Ltd.‘A longitudinal evaluation of a UK charity's network of therapeutic projects’Key Practitioner Messages

This paper presents findings from a longitudinal evaluation of a UK charity's network of therapeutic projects for their effectiveness in improving child outcomes following child sexual abuse.

Eight intervention projects nationally participated leading to a final sample of 42 children. Children included in this evaluation showed improvement on most measures but the strength of the findings is limited by the lack of comparison group and the number of children and young people recruited.
Rapid Pyrolysis of Wheat Straw in a Bench‐Scale Circulating Fluidized‐Bed Downer Reactor
Authors: Ding T. , Li S. , Xie J. , Song W. , Yao J. , Lin W. 
Published: November 2012

AbstractThe effects of acid washing treatment on the pyrolysis product distribution and product properties were investigated in a bench‐scale circulating fluidized‐bed (CFB) downer reactor with wheat straw as feedstock. The acid treatment not only removes most of the inorganic species present in the biomass but also alters the distribution of the remaining organic constituents. It was found that the removal of the inorganic species increases the yield of liquid product and reduces char formation and gas yield. CO and CO2 are the dominant components in the gaseous product, accounting for over 90 %. The concentration of CO in the gaseous product increases after acid treatment, while the CO2 concentration decreases. The oxygen and water contents in the liquid product are decreased on acid treatment, leading to a relatively high heating value and viscosity. More volatiles can be found in the char derived from the acid‐treated wheat straw than from the raw wheat straw. This may suggest that a longer residence time is needed for pyrolysis of the acid‐treated wheat straw in order to obtain the maximal yield of volatile matter.
Hydrogen Transfer in SAM‐Mediated Enzymatic Radical Reactions
Authors: Hioe Johnny , Zipse Hendrik 
Published: November 2012

AbstractS‐Adenosylmethionine (SAM) plays an essential role in a variety of enzyme‐mediated radical reactions. One‐electron reduction of SAM is currently believed to generate the C5′‐desoxyadenosyl radical, which subsequently abstracts a hydrogen atom from the actual substrate in a catalytic or a non‐catalytic fashion. Using a combination of theoretical and experimental bond dissociation energy (BDE) data, the energetics of these radical processes have now been quantified. SAM‐derived radicals are found to react with their respective substrates in an exothermic fashion in enzymes using SAM in a stoichiometric (non‐catalytic) way. In contrast, the catalytic use of SAM appears to be linked to a sequence of moderately endothermic and exothermic reaction steps. The use of SAM in spore photoproduct lyase (SPL) appears to fit neither of these general categories and appears to constitute the first example of a SAM‐initiated radical reaction propagated independently of the cofactor.
meso‐Thiaporphyrinoids Revisited: Missing of Sulfur by Small Metals
Authors: Kamiya Hiroki , Kondo Takeshi , Sakida Takafumi , Yamaguchi Shigeru , Shinokubo Hiroshi 
Published: November 2012

AbstractFacile synthesis of meso‐aryl‐substituted 5,15‐dithiaporphyrins and 10‐thiacorroles has been achieved by sulfidation of α,α′‐dichlorodipyrrin metal complexes with sodium sulfide in DMF. Thiacorrole metal complexes exhibit distinct aromaticity due to 18 π‐conjugation including the lone pair on sulfur, whereas dithiaporphyrins are nonaromatic judging from 1H NMR spectra, X‐ray analysis, and absorption spectra. We have found that NiII and AlIII dithiaporphyrin complexes undergo smooth thermal sulfur extrusion reaction to give the corresponding thiacorrole complexes, whereas free base, ZnII, PdII, and PtII dithiaporphyrin complexes did not exhibit the similar reactivity. The DFT calculations have elucidated a reaction pathway involving an episulfide intermediate, which can explain the markedly different reactivity among dithiaporphyrin metal complexes.
ChemInform Abstract: Synthesis of 1,2,5‐Thiadiazepine Derivatives by Ring Enlargement of 1, 2‐Thiazetidin‐3‐one 1,1‐Dioxides with 3‐Amino‐2H‐azirines.
Authors: MIHOVA T. R. , LINDEN A. , HEIMGARTNER H. 
Published: November 2012

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: A Re‐Investigation of the Crystal Structure and Luminescence of BaCa2MgSi2O8:Eu2+.
Authors: Park Cheol‐He , Kim Tae‐Hoon , Yonesaki Yoshinori , Kumada Nobuhiro 
Published: November 2012

AbstractA combined powder X‐ray and neutron Rietveld method reveals that BaCa2MgSi2O8 crystallizes in the trigonal space group P$\bar 3$ with Z = 1 and not in the previously reported space group P$\bar 3$m1.
ChemInform Abstract: Variations Modulo 4‐4+, 4+3‐3+4‐, 4‐5+, 5‐4+4‐5+4‐4+ with Rare Earth Carbide Halides.
Authors: Mattausch Hansjuergen , Simon Arndt 
Published: November 2012

AbstractThe new compounds Pr8(C2)4Cl5 (I), Pr14(C2)7Cl9 (II), Pr22(C2)11Cl14 (III), Ce2(C2)Cl (IV), La2(C2)Br (V), Ce2(C2)Br (VI), Pr2(C2)Br (VII), Ce18(C2)9Cl11 (VIII), and Ce26(C2)13Cl16 (IX) are synthesized by heating mixtures of LnX3 (Ln: Ce, La, Pr; X: Cl, Br), Ln, and carbon, or mixtures of LnX3 and Ln2C3/Ln for several days between 750 and 1200 °C.
ChemInform Abstract: Iodide Substitution in Lithium Borohydride, LiBH4—LiI.
Authors: Rude Line H. , Groppo Elena , Arnbjerg Lene M. , Ravnsbaek Dorthe B. , Malmkjaer Regitze A. , Filinchuk Yaroslav , Baricco Marcello , Besenbacher Flemming , Jensen Torben R. 
Published: November 2012

AbstractSolid solutions of Li(BH4)1‐xIx are prepared from LiBH4 and α‐LiI by high‐energy ball milling and heat treatment at 245 or 285 °C.
ChemInform Abstract: Highly Stable Cooperative Distortion in a Weak Jahn—Teller d2 Cation: Perovskite‐Type ScVO3 Obtained by High‐Pressure and High‐Temperature Transformation from Bixbyite.
Authors: Castillo‐Martinez Elizabeth , Bieringer Mario , Shafi Shahid P. , Cranswick Lachlan M. D. , Alario‐Franco Miguel Angel 
Published: November 2012

AbstractA new ScVO3 perovskite phase is synthesized from the cation‐disordered bixbyite‐type ScVO3 at 8 GPa and 1073 K.
ChemInform Abstract: Technetium Dichloride: A New Binary Halide Containing Metal—Metal Multiple Bonds.
Authors: Poineau Frederic , et al. et al. 
Published: November 2012

AbstractTcCl2 is synthesized by reaction of Tc metal (freshly prepared by H2 reduction of TcO2 at 750 °C) with Cl2 gas (sealed Pyrex tube, 450 °C, 24 h).
ChemInform Abstract: Asymmetric Conjugate Addition to Cyclic Enone Catalyzed by Cu‐NHC Complexes with C2 Symmetry.
Authors: Shan Fengjun , Jiang Lan , Li Zhengning , Zhao Defeng 
Published: November 2012

AbstractIf cyclopent‐2‐enone (IV) instead of cyclohex‐2‐enone (I) is used for the title reaction, the stereochemistry is reversed and the enantioselectivity is much lower.
ChemInform Abstract: Synthesis of Oxadiazoles and Pyrazolones as an Antimycobacterial and Antimicrobial Agents.
Authors: Thaker K. M. , Ghetiya R. M. , Tala S. D. , Dodiya B. L. , Joshi K. A. , Dubal K. L. , Joshi H. S. 
Published: November 2012

AbstractAll newly synthesized compounds are tested for their antibacterial and antitubercular activity.
ChemInform Abstract: Enantioselective gem‐Chlorofluorination of Active Methylene Compounds Using a Chiral Spiro Oxazoline Ligand.
Authors: Shibatomi Kazutaka , Narayama Akira , Soga Yoshinori , Muto Tsubasa , Iwasa Seiji 
Published: November 2012

AbstractThe reaction of phosphonates proceeds with a lower selectivity toward monochlorination and thus dichlorinated by‐products are also formed.
ChemInform Abstract: Sulfonic Acid Containing Cation‐Exchanger Resin “INDION‐770” and Copper(I) Salts: A Novel Reusable Catalyst for N‐Arylation of NH‐Heterocycles with Haloarenes.
Authors: Joseph P. J. Amal , Priyadarshini S. , Kantam M. Lakshmi , Maheswaran H. 
Published: November 2012

AbstractThe novel protocol is very economical, stable to both air and moisture, and applicable for cross‐coupling of a variety of electron‐rich or electron‐deficient iodoarenes, bromoarenes and activated chloroarenes with NH heterocycles.
ChemInform Abstract: m‐Terphenyl Ethers, a New Hydroxy Protecting Group Cleavable under Reductive Single Electron Transfer Reaction Conditions.
Authors: Azzena Ugo , Mocci Sarah , Pisano Luisa 
Published: November 2012

AbstractIt is demonstrated, that m‐terphenyl ethers such as (III) and (VIII) and, to a lesser extent analogous 2,6‐dimethoxyphenyl ethers (V), can be cleaved under SET conditions using alkali metals in THF.
ChemInform Abstract: Optically Pure Polyfluoroalkanesulfinamides: Synthesis and Application as Promising and Monitorable Chiral Auxiliaries.
Authors: Liu Li‐Juan , Chen Ling‐Jun , Li Peng , Li Xiao‐Bo , Liu Jin‐Tao 
Published: November 2012

AbstractThe title amides are efficient and easily removable chiral auxiliaries.
ChemInform Abstract: A Novel Atom‐Efficient, One‐Pot Synthesis of Sulfonylguanidines and Sulfamoylguanidines.
Authors: Lange Jos H. M. , Verhoog Stefan , Sanders Hans J. , von Loevezijn Arnold , Kruse Chris G. 
Published: November 2012

AbstractThe described synthetic methodology exhibits a broad application, but sterically demanding amines, such as (IIg), appear to limit the scope.
ChemInform Abstract: An Easy Access to Styrenes: trans Aryl 1,3‐, 1,4‐ and 1,5‐Dienes, and 1,3,5‐Trienes by Hiyama Cross‐Coupling Catalyzed by Palladium Nanoparticles.
Authors: Chatterjee Tanmay , Dey Raju , Ranu Brindaban C. 
Published: November 2012

AbstractInstead of aryl bromides (I), the corresponding aryl iodides can be used as well.
ChemInform Abstract: Asymmetric Addition of Arylboronic Acids to Cumulene Derivatives Catalyzed by Axially Chiral N‐Heterocyclic Carbene—Pd2+ Complexes.
Authors: Liu Zhen , Gu Peng , Shi Min 
Published: November 2012

AbstractThe method affords allenes which can be further transformed on a 2 mmol scale into dihydropyrans or an aldehyde without loss of enantioselectivity.
ChemInform Abstract: Phosphane‐Free Green Protocol for Selective Nitro Reduction with an Iron‐Based Catalyst.
Authors: Sharma Upendra , Verma Praveen Kumar , Kumar Neeraj , Kumar Vishal , Bala Manju , Singh Bikram 
Published: November 2012

AbstractUsing hydrazine hydrate as hydrogen source and only 0.5 mol% of iron phthalocyanine/FeSO4 as catalyst, a variety of aromatic or heteroaromatic nitro compounds is reduced to the corresponding amines.
ChemInform Abstract: SO3H‐Functionalized Ionic Liquids: Green, Efficient and Reusable Catalysts for the Facile Dehydration of Aldoximes into Nitriles.
Authors: Davoodnia Abolghasem , Khojastehnezhad Amir , Bakavoli Mehdi , Tavakoli‐Hoseini Niloofar 
Published: November 2012

AbstractThe title reaction is environmentally friendly, has an easy work‐up, and the catalyst can be recycled and reused for several times.
ChemInform Abstract: A General Method for Palladium‐Catalyzed Reactions of Primary Sulfonamides with Aryl Nonaflates.
Authors: Shekhar Shashank , Dunn Travis B. , Kotecki Brian J. , Montavon Donna K. , Cullen Steven C. 
Published: November 2012

AbstractThe reaction allows an efficient access to a wide range of N‐aryl sulfonamides.
ChemInform Abstract: One‐Pot Synthesis of Symmetrical and Unsymmetrical Aryl Sulfides by Pd‐Catalyzed Couplings of Aryl Halides and Thioacetates.
Authors: Park Namjin , Park Kyungho , Jang Mihee , Lee Sunwoo 
Published: November 2012

AbstractAryl alkyl sulfides are also available.
ChemInform Abstract: Methyl Sulfinates as Electrophiles in Friedel—Crafts Reactions. Synthesis of Aryl Sulfoxides.
Authors: Yuste Francisco , Hernandez Linares Angelica , Mastranzo Virginia M. , Ortiz Benjamin , Sanchez‐Obregon Ruben , Fraile Alberto , Garcia Ruano Jose Luis 
Published: November 2012

AbstractAlCl3‐mediated treatment of phenols, anisoles, and N‐substituted anilines with methyl sulfinates allows a new and mild access to aromatic sulfoxides.
ChemInform Abstract: Synthesis of Allyl Aryl Sulfone Derivatives from Baylis—Hillman Acetates in Water.
Authors: Karnakar Konkala , Shankar Jilla , Murthy Sabbavarapu Narayana , Nageswar Yadavalli Venkata Durga 
Published: November 2012

AbstractThe reaction is conducted under environmentally benign conditions.
ChemInform Abstract: Photoinduced Carbamoylation of Ethereal C—H Bonds Using Pentafluorophenyl Isocyanate.
Authors: Kamijo Shin , Hoshikawa Tamaki , Inoue Masayuki 
Published: November 2012

AbstractThe reaction proceeds with high chemoselectivity toward the etheral position allowing the carbamoylation of sterically hindered tertiary C—H bonds.
ChemInform Abstract: Effect of Counterions and Central Cores of Tripodal Imidazolium Salts on Palladium‐Catalyzed Suzuki—Miyaura Cross‐Coupling Reactions.
Authors: Zhong Rui , Wang Ya‐Nong , Guo Xu‐Qing , Hou Xiu‐Feng 
Published: November 2012

AbstractAmong a variety of benzene‐, nitrogen‐, or carbon‐centered tripodal imidazolium salts bearing different counterions, the benzene‐centered hexafluorophosphate salt (TIMB) shows the best activity as ligand in the Suzuki—Miyaura cross coupling of aryl iodides or bromides (I) with arylboronic acids (II).
ChemInform Abstract: Mizoroki—Heck‐Type Reaction Mediated by Potassium tert‐Butoxide.
Authors: Shirakawa Eiji , Zhang Xuejing , Hayashi Tamio 
Published: November 2012

AbstractThe transition metal free reaction of various aryl halides with excess stilbenes (5 equiv.) proceeds through aryl radical intermediates and the iodides are found to be generally the most effective substrates.
ChemInform Abstract: Gold Catalyzed Carbocyclization of Phenyl Substituted Allylic Acetates to Synthesize Benzocycle Derivatives.
Authors: Liu Heng , Wang Ya‐Hui , Zhu Li‐Li , Li Xiao‐Xiao , Zhou Wen , Chen Zili , Hu Wen‐Xiang 
Published: November 2012

AbstractThe cyclization of allylic acetates of type (I) and several structurally related analogues affords benzocyclohexanes in generally good yields.
ChemInform Abstract: A New Approach to Fused Furan Ring Systems and Benzofurans: Intramolecular Cyclization Reactions of Unsaturated Acyloxy Sulfone Derivatives.
Authors: Liu Yuan , Jacobs Hollie K. , Gopalan Aravamudan S. 
Published: November 2012

AbstractThe LiN(Tms)2‐mediated intramolecular cyclization is followed by TosOH‐catalyzed dehydration and double bond isomerization.
ChemInform Abstract: Bismuthtriflate‐Catalyzed Reaction of N‐Alkylisatins with Allyltrimethylsilane.
Authors: Meshram Harhadas M. Meshram Harhadas M. , Ramesh Palakuri , Reddy B. Chennakesava , Kumar G. Santosh 
Published: November 2012

AbstractAllyl‐substituted 3‐hydroxyoxindoles are obtained by reaction of allyltrimethylsilane with substituted isatins (I).