bluuebunny/crossref_metadata_2025_split huggingface dataset:
Altered local spontaneous activity in frontal lobe epilepsy: a resting‐state functional magnetic resonance imaging study
Authors: Dong Li , Li Hechun , He Zhongqiong , Jiang Sisi , Klugah‐Brown Benjamin , Chen Lin , Wang Pu , Tan Song , Luo Cheng , Yao Dezhong 
Published: September 2016

AbstractPurposeThe purpose of this study was to investigate the local spatiotemporal consistency of spontaneous brain activity in patients with frontal lobe epilepsy (FLE).MethodEyes closed resting‐state functional magnetic resonance imaging (fMRI) data were collected from 19 FLE patients and 19 age‐ and gender‐matched healthy controls. A novel measure, named FOur‐dimensional (spatiotemporal) Consistency of local neural Activities (FOCA) was used to assess the spatiotemporal consistency of local spontaneous activity (emphasizing both local temporal homogeneity and regional stability of brain activity states). Then, two‐sample t test was performed to detect the FOCA differences between two groups. Partial correlations between the FOCA values and durations of epilepsy were further analyzed.Key FindingsCompared with controls, FLE patients demonstrated increased FOCA in distant brain regions including the frontal and parietal cortices, as well as the basal ganglia. The decreased FOCA was located in the temporal cortex, posterior default model regions, and cerebellum. In addition, the FOCA measure was linked to the duration of epilepsy in basal ganglia.SignificanceOur study suggested that alterations of local spontaneous activity in frontoparietal cortex and basal ganglia was associated with the pathophysiology of FLE; and the abnormality in frontal and default model regions might account for the potential cognitive impairment in FLE. We also presumed that the FOCA measure had potential to provide important insights into understanding epilepsy such as FLE.
Direct and Co‐catalytic Oxidation of Hydroxylamines to Nitrones Promoted by Rhodium Nanoparticles Supported on Carbon Nanotubes
Authors: Prakash Praveen , Gravel Edmond , Nguyen Dinh‐Vu , Namboothiri Irishi N. N. , Doris Eric 
Published: September 2016

AbstractRhodium nanoparticles were assembled on carbon nanotubes, and the resulting nanohybrid was studied in the aerobic oxidation of hydroxylamines to nitrones. Two catalytic systems were developed (i.e., direct or co‐catalytic) and both operated to provide high yields of the products, under mild conditions, but with their own specificity as regards the kinetics and regioselectivity of the transformation. In addition, the in situ cycloaddition of the produced nitrones with different alkynes was investigated.
Copper‐Catalyzed Amidation of Primary and Secondary Alkyl Boronic Esters
Authors: Mori‐Quiroz Luis M. , Shimkin Kirk W. , Rezazadeh Sina , Kozlowski Ryan A. , Watson Donald A. 
Published: September 2016

AbstractThe oxidative copper‐catalyzed cross‐coupling of functionalized alkyl boronic esters with primary amides is reported. Through the identification of appropriate diketimine ligands, conditions for efficient coupling of both primary and secondary alkyl boronic esters with diverse primary amides, including acetamide, have been developed.
ChemInform Abstract: Truly Transparent p‐Type γ‐CuI Thin Films with High Hole Mobility.
Authors: Yamada Naoomi , Ino Ryuichiro , Ninomiya Yoshihiko 
Published: September 2016

Abstractγ‐CuI thin films are prepared by iodination (closed system, I2, 25 °C, 60 min) of Cu3N thin films (20—30 nm) prepared by r.f.
ChemInform Abstract: The High‐Pressure Polymorph of Ca4Te5O14 and the Mixed‐Valent Compound Ca13TeVI2/3TeIV3.75 O15(BO3)4(OH)3.
Authors: Weil Matthias , Heymann Gunter , Huppertz Hubert 
Published: September 2016

AbstractHot press annealing of a stoichiometric mixture of Ca(OH)2 and TeO2 yields a high‐pressure modification of Ca4Te5O14 (I) (h‐BN crucible in multianvil press, 8 GPa, 900 °C, 10 min) and minor amounts of Ca13TeVI2/3TeIV3.75 O15(BO3)4(OH)3 (II) resulting from the reaction with the h‐BN crucible used in the high‐pressure set‐up.
ChemInform Abstract: Syntheses, Structure Elucidation, and Characterization of the Borate‐Nitrates RE[B5O8(OH)(H2O)] NO3·2H2O [RE: Nd (x = 0.85), Sm (x = 0)].
Authors: Ortner Teresa S. , Wurst Klaus , Joachim Bastian , Huppertz Hubert 
Published: September 2016

AbstractNd[B5O8(OH)(H2O)0.85] NO3·2H2O (I) and Sm[B5O8(OH)]NO3·2H2O (II) are prepared by hydrothermal reaction of Nd(NO3)3·6H2O or Sm(NO3)3·6H2O, and H3BO3 as reactant and flux in a 1:5 molar mixture without the need for additional H2O (autoclave, 513 K, 3 d).
ChemInform Abstract: Ca2Mg5GeN6 — A Layered Nitridomagnesogermanate.
Authors: Poesl Christine , Schnick Wolfgang 
Published: September 2016

AbstractThe title compound is synthesized from mixtures of Ca, Mg, Ge, NaN3, and EuF3 in a Na flux (Ta ampule, 780 °C, 48 h).
ChemInform Abstract: First Evidence of a Water‐Soluble Plutonium(IV) Hexanuclear Cluster.
Authors: Tamain Christelle , Dumas Thomas , Guillaumont Dominique , Hennig Christoph , Guilbaud Philippe 
Published: September 2016

AbstractSingle crystals of the PuIV hexanuclear cluster [Pu6(OH)4O4]12+ stabilized by 1,4,7,10‐tetraazacyclododecane‐1,4,7,10‐tetraacetic acid (DOTA) ligands are grown from an aqueous protonated DOTA solution to which a HNO3 solution of PuO2 is given (pH 0.5, overnight).
ChemInform Abstract: Copper Polytellurite‐Chlorides with A2+ Cations (A: Cd, Pb) Obtained by CVT Reactions.
Authors: Zinyakhina Diana O. , Siidra Oleg I. , Charkin Dmitri O. , Nazarchuk Evgeniy V. , Bubnova Rimma S. 
Published: September 2016

AbstractSingle crystals of Pb5Cu2(Te4O11)Cl8 (I) and CdCu2(Te3O8)Cl2 (II) are obtained by chemical vapor transport reactions of either a 3:1:1 mixture of CuCl2, TeO2, and PbO or a 1:2:1 mixture of CuCl2, TeO2, and CdO (evacuated quartz tube, 450→430 °C, 24 h).
ChemInform Abstract: Polyhedral Bismuth Polycations Coordinating Gold(I) with Varied Hapticity in a Homoleptic Heavy‐Metal Cluster.
Authors: Mueller Ulrike , Isaeva Anna , Richter Janine , Knies Maximilian , Ruck Michael 
Published: September 2016

AbstractSingle crystals of [Au(Bi8)2](AlCl4)5 are obtained from the reaction of AuCl, BiCl3, and Bi in the ionic liquid [bmim]Cl·4AlCl3 (evacuated silica tubes, 180 °C, 16 h).
ChemInform Abstract: Asymmetric Induction at Remote Quaternary Centers of Cyclohexadienones by Rhodium‐Catalyzed Conjugate Hydrosilylation.
Authors: Naganawa Yuki , Kawagishi Mayu , Ito Jun‐ichi , Nishiyama Hisao 
Published: September 2016

AbstractAn enantioselective conjugate hydrosilylation of prochiral γ,γ‐disubstituted cyclohexadienones furnishes cyclohexenones with a chiral quaternary γ‐carbon atom.
ChemInform Abstract: An Enantio‐ and Diastereoselective Chemoenzymatic Synthesis of α‐Fluoro β‐Hydroxy Carboxylic Esters.
Authors: Howard James K. , Mueller Marion , Berry Alan , Nelson Adam 
Published: September 2016

AbstractThe trans‐o‐hydroxybenzylidene pyruvate hydratase/aldolase (HBPA) from Pseudomonas putida catalyses the reactions between fluoropyruvate and many (hetero)aromatic aldehydes to yield aldol adducts without subsequent dehydration.
ChemInform Abstract: Intramolecular Cyclizations of Cyclopropenes with Indole.
Authors: Zhu Peng‐Long , Tang Xiang‐Ying , Shi Min 
Published: September 2016

AbstractThe TFA‐mediated intramolecular cycloisomerization of substrates (I) gives rise to azocino[5,4‐b]indoles (II), whilst the reaction of aryl‐substituted cyclopropenes (III) does not stop at the stage of azocino[5,4‐b]indoles, but affords tetracyclic products (IV).
ChemInform Abstract: A General and Selective Rhodium‐Catalyzed Reduction of Amides, N‐Acyl Amino Esters, and Dipeptides Using Phenylsilane.
Authors: Das Shoubhik , Li Yuehui , Lu Liang‐Qiu , Junge Kathrin , Beller Matthias 
Published: September 2016

AbstractThe title reaction proceeds successfully with the simple catalyst Rh(cod)(acac) which reveals an excellent chemoselectivity in the presence of various sensitive functional groups.
ChemInform Abstract: Silver‐Catalyzed Denitrative Sulfonylation of β‐Nitrostyrenes: A Convenient Approach to (E)‐Vinyl Sulfones.
Authors: Keshari Twinkle , Kapoorr Ritu , Yadav Lal Dhar S. 
Published: September 2016

AbstractThe utilization of β‐nitrostyrenes (readily available by the Henry reaction) for a highly stereoselective, convenient, and catalytic synthesis of (E)‐vinyl sulfones at room temperature is investigated.
ChemInform Abstract: Chemo‐, Regio‐, and Stereoselective Copper(II)‐Catalyzed Boron Addition to Acetylenic Esters and Amides in Aqueous Media.
Authors: Nelson Amanda K. , Peck Cheryl L. , Rafferty Sean M. , Santos Webster L. 
Published: September 2016

AbstractThe use of unsymmetrical diboron reagent pinBBdan (II) allows a mild and efficient copper(II)‐catalyzed β‐borylation of alkynoates to give the functionalized acrylates (III) in good yield.
ChemInform Abstract: Organocatalytic Enantioselective Nucleophilic Alkynylation of Allyl Fluorides Affording Chiral Skipped Ene‐Ynes.
Authors: Okusu Satoshi , Okazaki Hiroki , Tokunaga Etsuko , Soloshonok Vadim A. , Shibata Norio 
Published: September 2016

AbstractOn the basis of silyl/fluoride activation an organocatalytic enantioselective nucleophilic alkynylation of Baylis—Hillman type fluorides with silylalkynes is developed to give skipped ene‐ynes.
ChemInform Abstract: Nickel‐Catalyzed Stereoselective Dicarbofunctionalization of Alkynes.
Authors: Li Zhaodong , Garcia‐Dominguez Andres , Nevado Cristina 
Published: September 2016

AbstractA radical‐mediated, three‐component coupling reaction of terminal alkynes, areneboronic acids, and alkyl halides leads to trisubstituted alkenes with high regio‐ and stereoselectivity.
ChemInform Abstract: Palladium(0)‐Catalyzed Intermolecular Carbocyclization of (1,n)‐Diynes and Bromophenols: An Efficient Route to Tricyclic Scaffolds.
Authors: Bai Lu , Yuan Yini , Liu Jingjing , Wu Jiaoyu , Han Lingbo , Wang Hui , Wang Yaoyu , Luan Xinjun 
Published: September 2016

AbstractA dearomative cyclization of bromophenols with diynes affords novel tricyclic spiro compounds.
ChemInform Abstract: Palladium‐Catalyzed Stereospecific Allylation of Nitroacetates with Enantioenriched Primary Allylic Amines.
Authors: Xu Jing‐Kun , Wang Yong , Gu Yonghong , Tian Shi‐Kai 
Published: September 2016

AbstractNitroacetates undergo allylation with enantiopure allylic amines followed by one‐pot decarboxylation to afford homoallylic nitro compounds with excellent retention of configuration.
ChemInform Abstract: Re‐Entry of Tin in N‐Alkylation: First Example of a Homogeneous Heterobimetallic Pd—Sn Catalyst for Base and Additive Free Alkylation of Amine and Surrogates with Alcohol.
Authors: Mohanty Anuradha , Roy Sujit 
Published: September 2016

AbstractThe title reaction provides N‐alkylated amines and amides in good yields and is applied to the synthesis of benzazoles.
ChemInform Abstract: Overcoming Naphthoquinone Deactivation: Rhodium‐Catalyzed C‐5 Selective C—H Iodination as a Gateway to Functionalized Derivatives.
Authors: Jardim Guilherme A. M. , da Silva Eufranio N. Jr. , Bower John F. 
Published: September 2016

AbstractThe method represents the first catalytic, directed method for ortho‐functionalizations of simple naphthoquinones.
ChemInform Abstract: Auto‐Oxidative Hydroxysulfenylation of Alkenes.
Authors: Huo Congde , Wang Yajun , Yuan Yong , Chen Fengjuan , Tang Jing 
Published: September 2016

AbstractThe reaction of alkenes (I) and (IV) with aryl thiols (II) under air atmosphere followed by reaction of intermediate hydroperoxides with PPh3 leads to β‐hydroxysulfides (III) and (V), respectively.
ChemInform Abstract: A Chiral Disulfoxide Ligand for the Efficient Rhodium‐Catalyzed 1,2‐Addition of Arylboroxines to N‐Tosylarylimines.
Authors: Zhao Guang‐Zhen , Sipos Gellert , Salvador Alvaro , Ou Arnold , Gao Pengchao , Skelton Brian W. , Dorta Reto 
Published: September 2016

Abstractaffording enantiomerically pure diarylmethylamines
ChemInform Abstract: Synthesis and Application of Chiral Spiro Cp Ligands in Rhodium‐Catalyzed Asymmetric Oxidative Coupling of Biaryl Compounds with Alkenes.
Authors: Zheng Jun , Cui Wen‐Jun , Zheng Chao , You Shu‐Li 
Published: September 2016

AbstractThe coupling between 1‐(naphthalen‐1‐yl)benzo[h]isoquinoline and various styrene derivatives as well as unsaturated esters, amides and phosphonates proceeds under mild conditions and delivers the products in high yields and with often very high enantiomeric excesses.
ChemInform Abstract: Pd(II) Pincer Type Complex Catalyzed Tandem C—H and N—H Activation of Acetanilide in Aqueous Media: A Concise Access to Functionalized Carbazoles in a Single Step.
Authors: Arumugam Vignesh , Kaminsky Werner , Nallasamy Dharmaraj 
Published: September 2016

AbstractFunctionalized carbazoles [34 examples] are prepared using a Pd(II) pincer‐type complex as catalyst in a very low amount (0.01 mol%).
ChemInform Abstract: Rhodium‐Catalyzed [2 + 2 + 2] Cycloadditions of Diynes with Morita—Baylis—Hillman Adducts: A Stereoselective Entry to Densely Functionalized Cyclohexadiene Scaffolds.
Authors: Fernandez Marti , Parera Magda , Parella Teodor , Lledo Agusti , Le Bras Jean , Muzart Jacques , Pla‐Quintana Anna , Roglans Anna 
Published: September 2016

AbstractThe title reaction proceeds with complete diastereoselectivity and high enantioselectivity through a kinetic resolution of the M‐B‐H adducts.
ChemInform Abstract: Exploration of the Diastereoselectivity in an Unusual Grignard Reaction and Its Application Towards the Synthesis of Styryl Lactones 7‐epi‐(+)‐Goniodiol and 8‐epi‐(‐)‐Goniodiol.
Authors: Chavan Subhash P. , Khatod Harshali S. , Das Tamal , Vanka Kumar 
Published: September 2016

Abstract7‐Epi‐(+)‐goniodiol (X) and 8‐epi‐(‐)‐goniodiol (XI) can be prepared using this method as a key step starting from enantiomerically enriched substrate (IVb).
ChemInform Abstract: Palladium‐Catalyzed Incorporation of Atmospheric CO2: Efficient Synthesis of Functionalized Oxazolidinones.
Authors: Garcia‐Dominguez Patricia , Fehr Lorenz , Rusconi Giulia , Nevado Cristina 
Published: September 2016

AbstractStarting from propargylamines and aryl halides an efficient procedure for the incorporation of atmospheric CO2 is developed which leads to a stereocontrolled, atom‐economic and high‐yielding synthesis of previously inaccessible heterocycles.
ChemInform Abstract: Zinc Iodide‐Mediated Direct Synthesis of 2,3‐Dihydroisoxazoles from Alkynes and Nitrones.
Authors: Xiao Zu‐Feng , Ding Ting‐Hui , Mao Sheng‐Wei , Ning Xiao‐Shan , Kang Yan‐Biao 
Published: September 2016

AbstractThe Zn‐mediated [3 + 2] cycloaddition of nitrones and non‐electron‐deficient terminal alkynes is described.
ChemInform Abstract: Copper‐Catalyzed C—N/C—O Coupling in Water: A Facile Access to N‐Coumaryl Amino Acids and Fluorescent Tyrosine & Lysine Labels.
Authors: Kumari Santosh , Shakoor S.M. Abdul , Bajaj Kiran , Nanjegowda S.h. , Mallu P. , Sakhuja Rajeev 
Published: September 2016

AbstractA mild and efficient protocol is developed for the Ullman type coupling between 4‐chlorocoumarins and unprotected amino acids to give N‐coumaryl derivatives (III).
ChemInform Abstract: Enantioselective N‐Heterocyclic Carbene‐Catalyzed [3 + 3] Annulation of α,β‐Unsaturated Esters with Methyl Ketoimine.
Authors: Xia Wenjing , Yao Hong , Liu Dan , Zhao Linxiang , Zhou Yu , Liu Hong 
Published: September 2016

AbstractA novel strategy for the asymmetric construction of δ‐lactams is reported.
ChemInform Abstract: Palladium‐Catalyzed Deaminative Phenanthridinone Synthesis from Aniline via C—H Bond Activation.
Authors: Yedage Subhash L. , Bhanage Bhalchandra M. 
Published: September 2016

AbstractA series of N‐methoxybenzamides is coupled with anilines to produce the desired phenanthridinone scaffold in one pot via C—C/C—N bond formation.
ChemInform Abstract: Synthesis of Novel Imidazo[1,2‐a]pyridin‐2‐amines from Arylamines and Nitriles via Sequential Addition and I2/KI‐Mediated Oxidative Cyclization.
Authors: Tian Xianhai , Song Lina , Wang Manman , Lv Zhigang , Wu Jie , Yu Wenquan , Chang Junbiao 
Published: September 2016

AbstractA series of new imidazopyridinamines is prepared by a solvent‐free reaction of arylamines with aryl substituted acetonitriles followed by oxidative cyclization of the amidine intermediates.
ChemInform Abstract: Ligand‐Controlled Synthesis of Azoles via Ir‐Catalyzed Reactions of SulfoxoniumYlides with 2‐Amino Heterocycles.
Authors: Phelps Alicia M. , Chan Vincent S. , Napolitano Jose G. , Krabbe Scott W. , Schomaker Jennifer M. , Shekhar Shashank 
Published: September 2016

AbstractThe regioselective reaction under conditions A) produces a series of the desired, pharmaceutically relevant, N‐heterocyles together with low amounts of β‐ketoamines.
ChemInform Abstract: Efficient Iron‐Catalyzed Kumada Cross‐Coupling Reactions Utilizing Flow Technology under Low Catalyst Loadings.
Authors: Buono Frederic G. , Zhang Yongda , Tan Zhulin , Brusoe Andrew , Yang Bing‐Shiou , Lorenz Jon C. , Giovannini Riccardo , Song Jinhua J. , Yee Nathan K. , Senanayake Chris H. 
Published: September 2016

AbstractThe first continuous flow iron‐catalyzed Kumada cross‐coupling is developed for the coupling of 2‐chloropyrazine and various aryl Grignard reagents using low catalyst loadings (0.5 mol‐%).
ChemInform Abstract: A Facile Access to Novel Heterocyclic Analogues of Chalcone from Newly Synthesized Ketone Containing Isoxazole and a Benzoxazinone Ring.
Authors: Verma Nishant , Kumar Sumit , Ahmed Naseem 
Published: September 2016

AbstractCompounds (IIIa‐c,e) and (Va,c,e) show antibacterial activity.
ChemInform Abstract: Synthesis and Solution Structure of 1H‐Benzo‐1,5‐diazepine Derivatives with a Perfluoroalkyl Side Chain.
Authors: Desens Willi , Winterberg Marleen , Michalik Dirk , Langer Peter 
Published: September 2016

AbstractThe reaction of perfluorinated 3,5‐dioxoesters with 1,2‐diaminobenzene and 2,3‐diaminonaphthaline is described.
ChemInform Abstract: Base‐Metal‐Catalyzed Regiodivergent Alkene Hydrosilylations.
Authors: Du Xiaoyong , Zhang Yanlu , Peng Dongjie , Huang Zheng 
Published: September 2016

AbstractA series of iron and cobalt phosphine‐iminopyridine complexes is prepared and their ability to catalyze the hydrosilylation of alkenes is demonstrated.
ChemInform Abstract: Nambiscalarane, a Novel Sesterterpenoid Comprising a Furan Ring, and Other Secondary Metabolites from Bioluminescent Fungus Neonothopanus nambi.
Authors: Tsarkova Aleksandra S. , Dubinnyi Maxim A. , Baranov Mikhail S. , Oguienko Anastasia D. , Yampolsky Ilia V. 
Published: September 2016

AbstractNovel nambiscalarane (I) is isolated together with six previously known compounds.
ChemInform Abstract: A General, Concise Strategy That Enables Collective Total Syntheses of over 50 Protoberberine and Five Aporhoeadane Alkaloids within Four to Eight Steps.
Authors: Zhou Shiqiang , Tong Rongbiao 
Published: September 2016

AbstractA 4‐step approach is developed which allows the access to the 13‐methylprotoberberine skeleton [cf.
ChemInform Abstract: Chemical Constituents from Termite‐Associated Xylaria acuminatilongissima YMJ623.
Authors: Cho Ting‐Yu , Wang Guei‐Jane , Ju Yu‐Ming , Chen Mei‐Chuan , Lee Tzong‐Huei 
Published: September 2016

AbstractThree unreported benzofurans namely acumifurans A‐C (I)‐(III) are isolated from the ethyl acetate extract of a fermented broth of termite nest fungus.
ChemInform Abstract: The Dynamic Covalent Chemistry of Esters, Acetals and Orthoesters
Authors: Brachvogel Rene‐Chris , von Delius Max 
Published: September 2016

AbstractReview: [fundamental aspects of three related reversible covalent reactions and their uses in dynamic combinatorial libraries and the self‐assembly of stimuli‐responsive molecules and materials; 63 refs.
ChemInform Abstract: Renewability Is Not Enough: Recent Advances in the Sustainable Synthesis of Biomass‐Derived Monomers and Polymers
Authors: Llevot Audrey , Dannecker Patrick‐Kurt , von Czapiewski Marc , Over Lena C. , Soeyler Zafer , Meier Michael A. R. 
Published: September 2016

AbstractReview: [102 refs.
Management of Hypertension With a Fixed‐Dose (Single‐Pill) Combination of Bisoprolol and Amlodipine
Authors: Gottwald‐Hostalek Ulrike , Sun Ningling , Barho Christian , Hildemann Steven 
Published: September 2016

AbstractHypertension is currently one of the greatest global health care challenges. Although many effective drugs are available, combinations of 2 or more medications are often required to meet clinical targets. Combination therapy has several advantages over monotherapy: lower doses of each drug can be used to achieve therapeutic goals; lower doses may lead to fewer adverse events, facilitating patient adherence; and using multiple drugs with different modes of action may be more effective in treating multifactorial diseases, including hypertension. Adherence is an important consideration when requiring patients to self‐administer multiple medications; as the number of concurrent medications increases, patient adherence tends to decrease. Recent evidence suggests that fixed‐dose combinations (FDCs) may be more effective than free‐dose combinations, as they provide all necessary medications in a single convenient tablet/single‐pill combination. Among combinations of hypertension medications, a β‐blocker such as bisoprolol with a calcium channel blocker such as amlodipine is an effective combination therapy for hypertension, with distinct and complimentary modes of action. With advantages over free‐dose combinations, the FDC of bisoprolol/amlodipine is thus an effective and convenient treatment for hypertension, allowing more patients to achieve their therapeutic goals, while potentially reducing the burden of hypertension on health care systems.
Comparative study of dislocation density characterizations on silicon
Authors: Gallien B. , Bailly S. , Duffar T. 
Published: September 2016

During production of silicon ingots for photovoltaic application, defects are created inside the crystal. Among these defects which impact photovoltaic efficiency, there are dislocations, linear defects mainly due to thermal stresses during ingot processing. Characterization of dislocations could take different ways. In this study, a comparison of 4 characterization methods for dislocation density in silicon is performed: one using manual counting, one using computer treatment of SEM pictures and two using optical dispersion evaluation. In order to show the strengths and weaknesses of each method, measurements are made on the same sample.Characteristic features of the sample, used for characterization, and all methods are first described. Then the procedure used for pairwise comparison of these methods is given. These coupled results are discussed in order to explain the differences observed in the dislocation density measured on the sample.Conclusions of this study give the application domain of each method. Remarks are formulated in order to help choosing a method consistent with the characterization purposes and the resources granted to it.
Reevaluation of phase relations in the chemical system neodymium lutetium oxide NdLuO3
Authors: Hirsch Tamino , Uecker Reinhard , Klimm Detlef 
Published: September 2016

The phase relations in the system with the overall chemistry Nd2O3:Lu2O3 around 1:1 were investigated by x‐ray diffraction (XRD) of annealed powders and by differential thermal analysis (DTA). A mixture of rare earth oxide solid solutions in the cubic C and in the monoclinic B rare earth oxide structure was determined in the temperature range 1200 to 1650 °C. The C‐phase is dominated by Lu content while the B‐phase is Nd rich. With rising annealing temperature, the portion of Nd in the C‐phase is increased and lowered for the B‐phase. Different facilitation possibilities for P‐NdLuO3 perovskite formation were discussed and examined but no evidence for stability of this phase could be found experimentally. Two thermal signals of phase transitions were detected. The first occurs at 1908 °C and disappears in second heating run if the temperature is raised too much. Furthermore, a second one was detected at 2121 °C.