bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cellular, Humoral, and Histopathologic Analysis in Rats Implanted with Orthodontic Nickel Brackets
Authors: Pereira Cássio Vicente , Kaminagakura Estela , Bonan Paulo Rogério Ferreti , Bastos Renata Avelar , Pereira Luciano José 
Published: August 2007

Abstract
Objective: To determine the immune response related to nickel and nickel-free orthodontic appliances using cellular (total and differential leukocytes) and humoral (IgA) quantification.
Materials and Methods: Thirty-five Wister rats were randomly distributed into three groups (A, B, and C). In the A group, the animals were subdivided into three subgroups (A1: control, without brackets; A2: nickel-free brackets; and A3: nickel brackets) with seven animals in each group; the animals were sacrificed after 14 days. Groups B and C received only nickel brackets and were kept for 14 days. After this period, the implants were removed and the rats were sacrificed. In group B, the animals were sacrificed 2 days after the appliance removal (16 days in total); and in group C, the animals were sacrificed 7 days after the brackets removal (21 days in total). Total and differential leukocyte number, IgA quantification and histopathologic analysis were done. Histopathologic analysis of subcutaneous tissue related to the orthodontic brackets was done as well.
Results: There were significant differences between the number of leukocytes for the nickel-implanted animals and the nickel-free and control groups after 14 days of implantation (P &lt; .05). However, there was no significant difference among groups A1, A2, and A3 for the differential number of leukocytes and for the IgA quantification, except for the number of monocytes, which was three times higher in the nickel group (A3). The histopathologic findings did not show differences between groups.
Conclusions: Nickel did not promote significant adverse biological effects.
Strain Mapping at the Atomic Scale in Highly Mismatched Heterointerfaces
Authors: Sánchez A. M. , Lozano J. G. , García R. , Herrera M. , Ruffenach S. , Briot O. , González D. 
Published: August 2007

AbstractA complete characterization of dislocation network in a highly mismatched interface with high spatial resolution has been performed. The interface between InN quantum dots and a (0001) GaN substrate contains three noninteracting sets of regularly‐spaced misfit dislocations lying along <110> directions. The network has a “Star of David” form, with each star bounding a hexagonal region which is pseudomorphic. These misfit dislocations form a threading dislocation network at the island edges due to free surface forces.
Collective Response from a Cationic Tetrahedral Fluorene for Label‐Free DNA Detection
Authors: Liu B. , Dan T. T. T. , Bazan G. C. 
Published: August 2007

AbstractA cationic water‐soluble tetrahedral molecule bearing four phenylene‐bis(fluorene) optical units, namely tetrakis[4‐(2‐(9,9,9′,9′‐tetrakis(N,N,N‐trimethylammoniumhexyl)‐7,2′‐bifluorenyl))‐phenyl]methane hexadecanebromide, was designed and synthesized. Fluorescence resonance energy transfer (FRET) experiments between the tetrahedral molecule and fluorescein‐labeled double stranded DNA (dsDNA‐Fl) or single stranded DNA (ssDNA‐Fl) were undertaken. Due to its specific shape and spatial registry, the tetrahedral molecule shows improved FRET efficiencies to dsDNA‐Fl as well as improved selectivity between dsDNA and ssDNA, when compared to a cationic conjugated polymer with similar repeat units. 30‐Fold signal amplification for dsDNA/ethidium bromide (EB) and selective response between complementary and non‐complementary DNA indicates that tetrahedral molecules could be useful to amplify the optical response from EB‐based DNA protocols.
New Insights on Near‐Infrared Emitters Based on Er‐quinolinolate Complexes: Synthesis, Characterization, Structural, and Photophysical Properties
Authors: Artizzu F. , Marchiò L. , Mercuri M. L. , Pilia L. , Serpe A. , Quochi F. , Orrù R. , Cordella F. , Saba M. , Mura A. , Bongiovanni G. , Deplano P. 
Published: August 2007

AbstractErbium quinolinolates, commonly assumed to be mononuclear species with octahedral co‐ordination geometry, have been proposed as promising materials for photonic devices but difficulties in obtaining well defined products have so far limited their use. We report here the conditions to obtain in high yields three different kinds of pure neutral erbium quinolinolates by mixing an erbium salt with 8‐quinolinol (HQ) and 5,7‐dihalo‐8‐quinolinol (H5,7XQ: X = Cl and Br): i) the trinuclear complex Er3Q9 (1) which is obtained with HQ deprotonated by NH3 in water or ethanol/water mixtures; ii) the already known dimeric complexes based on the unit [Er(5,7XQ)3(H2O)2] [X = Cl (2) and Br (3)]; iii) the mononuclear [Er(5,7XQ)2(H5,7XQ)2Cl] [X = Cl (4) and Br (5)] complexes, obtained in organic solvents without base addition, where the ion results coordinated to four ligands, two deprotonated chelating, and two as zwitterionic monodentate oxygen donors. These results represent a further progress with respect to a recent reinvestigation on this reaction, which has shown that obtaining pure and anhydrous octahedral ErQ3, the expected reaction product, is virtually impossible, but failed in the isolation of 1 and of the neutral tetrakis species based on H5,7XQ ligands. Structural data provide a detailed description of the molecules and of their packing which involves short contacts between quinoxaline ligands, due to π–π interactions. Electronic and vibrational studies allow to select the fingerprints to distinguish the different products and to identify the presence of water. The structure/property relationship furnishes a satisfactory interpretation of the photo‐physical properties. Experimental evidence confirms that the most important quenchers for the erbium emission are the coordinated water molecules and shows that the ligand emission is significantly affected by the π–π interactions.
Azathioprine‐associated acute myeloid leukemia in a patient with Crohn's disease and thiopurine S‐methyltransferase deficiency
Authors: Yenson Paul R. , Forrest Donna , Schmiegelow Kjell , Dalal Bakul I. 
Published: August 2007

AbstractImmunosuppressive thiopurines like azathioprine, 6‐mercaptopurine, and thioguanine are commonly used in inflammatory and neoplastic disorders. A subset of these patients are genetically slow metabolizers due to point‐mutations in enzyme thiopurine S‐methyltransferase (TPMT), and are at a higher risk of hematologic toxicity and leukemogenesis. We present such a patient who was a slow metabolizer for azathioprine, and developed a rapidly lethal form acute myeloid leukemia after relatively low dose exposure to the drug. There was prominent hemophagocytic activity in the bone marrow, and cytogenetic analysis showed a complex karyotype with monosomy 7, but no involvement of chromosome 8. Am. J. Hematol., 2008. © 2007 Wiley‐Liss, Inc.
Dynamic reaction inside co‐rotating twin screw extruder. I. Truck tire model material/polypropylene blends
Authors: Lee Sung Hyo , Balasubramanian Maridass , Kim Jin Kuk 
Published: August 2007

AbstractWaste ground rubber tire (WGRT) is a complex composite containing various elastomers, carbon black, zinc oxide, stearic acid, processing oils, and other curatives. Most of the waste ground rubber tire is composed of mainly natural rubber (NR) and styrene butadiene rubber (SBR) in varying proportions. Blending it with other thermoplastic materials is difficult due to the inherent thermodynamic incompatibility. But, the compatibility can be increased by making the reactive sites in WGRT with suitable chemicals under optimum condition of shearing inside a twin screw extruder and it is said to undergo a dynamic reaction inside the extruder. To understand the mechanism of dynamic reaction process of a rubber/polyolefin blend, the blending of a truck tire model material rubber with polyolefin was first tried before it was applied to waste WGRT material. It was observed that the blends of a truck tire model rubber material and PP thermoplastic are physical mixture of two incompatible polymers in which a continuous plastic phase is largely responsible for the tensile properties. The rubber particles are the dispersed phase. The large particle size and the poor adhesion of these rubber particles are believed to be liable for the poor tensile properties. In case of blends of truck tire model material with isotactic polypropylene the tensile properties are found to be lower than that of its PP‐g‐MA counterpart which can be attributed to the reaction of the MA with the carbon black particles. A schematic representation of the possible interactions has been proposed. The effect of addition of compatibilizers such as SEBS and SEBS‐g‐MA has also been studied. The tensile and TGA studies indicate that the polarity of SEBS and SEBS‐g‐MA induces an increase in the performance characteristics for both types of polyolefins but the intensity of this increase is higher in the PP‐g‐MA based blends. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 106: 3193–3208, 2007
Aqueous polymer emulsions by chemical modifications of thermosetting alternating polyketones
Authors: Zhang Youchun , Broekhuis A. A. , Picchioni F. 
Published: August 2007

AbstractAqueous polymer emulsions were prepared by chemical modifications of thermosetting alternating polyketones in a one‐pot reaction. Polymeric amines derived from the polyketones can act as polymeric surfactants for the self‐emulsification of polyketones. The stability and structure of the emulsions with respect to the storage time at room temperature (20°C) at different experimental conditions were thoroughly studied by dynamic light scattering, rheology and Cryo‐SEM. Emulsions with an average particle size smaller than 1 μm and a viscosity less than 1 Pa·s could be achieved and remained stable for at least 1‐year. The prepared emulsions were qualified as wood adhesives for wood composite industry, according to the European Standard for wood adhesive testing. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Patient factors influencing conversion from laparoscopically assisted to open surgery for colorectal cancer
Authors: Thorpe H , Jayne D G , Guillou P J , Quirke P , Copeland J , Brown J M 
Published: August 2007

Abstract

Background
Intraoperative conversion from laparoscopically assisted to open surgery for colorectal cancer is thought to be influenced by several patient factors. Analysis of the Conventional versus Laparoscopic-Assisted Surgery In Colorectal Cancer (CLASICC) Trial data aimed to identify these risk factors.

Methods
Of 488 laparoscopically assisted procedures attempted, 143 (29·3 per cent) were converted to open operation. Patient factors considered in multivariable analyses were age, sex, previous abdominal incisions, body mass index (BMI), tumour site, tumour diameter, pathological tumour (pT) and pathological node (pN) stage, extent of tumour spread from the muscularis propria, liver and peritoneal metastases, and American Society of Anesthesiologists (ASA) grade. As BMI was missing for 30·7 per cent of patients, two approaches were employed: one considered BMI as a possible risk factor and one did not.

Results
When BMI was taken into consideration, male sex (odds ratio (OR) 2·07; P = 0·020), BMI (OR 1·10; P = 0·006) and extent of tumour spread from the muscularis propria (OR 1·08; P &lt; 0·001) were independent predictors of conversion. When BMI was not considered, extent of tumour spread (OR 1·07; P &lt; 0·001) and male sex (OR 2·05; P = 0·004) were again identified, as were tumour site (OR 2·11; P = 0·005) and ASA grade (II versus I, OR 0·92; III versus I, OR 2·74; P = 0·012).

Conclusion
Intraoperative conversion is more likely with larger BMI, in men, patients with rectal cancer, those graded ASA III or when there is greater local tumour spread.
Early Barriers in the Matrix Photochemical Formation of syn–anti Randomized FC(O)SeF from the OCSe:F2 Complex
Authors: Gómez Castaño Jovanny A. , Picone A. Lorena , Romano Rosana M. , Willner Helge , Della Védova Carlos O. 
Published: August 2007

AbstractThe photochemically induced reaction of OCSe and F2, isolated together in an Ar matrix at about 15 K, leads to formation of the hitherto‐unknown fluorocarbonylselenyl fluoride FC(O)SeF. The reaction occurs via a van der Waals complex OCSe⋅⋅⋅FF that favors very early formation of the anti conformer. The presence and subsequent decay of a band assigned to the FF vibration correlated with perturbed OCSe bands seems to confirm this hypothesis. Subsequent irradiation of the matrix leads to randomized FC(O)SeF by a photochemically induced conformational equilibrium between syn and anti forms. Another photochemical reaction channel is the formation of CO and SeF2 molecules, which are produced in the same matrix cage and then form a loose complex. The changes were monitored and the products characterized experimentally by their IR spectra, and the spectra analyzed in the light of the results of theoretical calculations.
Crystal Structures of New Pyrovanadates A2MnV2O7 (A: Rb, K).
Authors: Ben Yahia Hamdi , Gaudin Etienne , Darriet Jacques 
Published: August 2007

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, please click on HTML or PDF.
Vibrational Analysis Study of Aluminum Trifluoride Phases
Authors: Gross Udo , Ruediger Stephan , Kemnitz Erhard , Brzezinks Klaus‐Werner , Mukhopadhyay Sanghamitra , Bailey Christine , Wander Adrian , Harrison Nicholas 
Published: August 2007

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, please click on HTML or PDF.
Increased Lewis Acidity in Hafnium‐Substituted Polyoxotungstates.
Authors: Boglio Cecile , Micoine Kevin , Remy Pauline , Hasenknopf Bernold , Thorimbert Serge , Lacote Emmanuel , Malacria Max , Afonso Carlos , Tabet Jean‐Claude 
Published: August 2007

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, please click on HTML or PDF.
Characterization and Electrochemical Properties of Molecular Icosanuclear and Bidimensional Hexanuclear Cu(II) Azido Polyoxometalates.
Authors: Pichon Celine , Mialane Pierre , Dolbecq Anne , Marrot Jerome , Riviere Eric , Keita Bineta , Nadjo Louis , Secheresse Francis 
Published: August 2007

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, please click on HTML or PDF.
Enantioselective Organocatalytic Route to Trifluoromethyl‐β‐amino Acids Using Chiral Bases.
Authors: Michaut Valerie , Metz Francois , Paris Jean‐Marc , Plaquevent Jean‐Christophe 
Published: August 2007

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, please click on HTML or PDF.
Asymmetric Bioreduction of Activated Alkenes Using Cloned 12‐Oxophytodienoate Reductase Isoenzymes OPR‐1 and OPR‐3 from Lycopersicon esculentum (Tomato): A Striking Change of Stereoselectivity.
Authors: Hall Melanie , Stueckler Clemens , Kroutil Wolfgang , Macheroux Peter , Faber Kurt 
Published: August 2007

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, please click on HTML or PDF.
Steric Effects in the Baeyer—Villiger Oxidation of Ketones Catalyzed by Platinum(II) Lewis Acid Complexes with Coordinated Electron‐Donor Alkyl Diphosphines.
Authors: Sgarbossa Paolo , Scarso Alessandro , Michelin Rino A. , Strukul Giorgio 
Published: August 2007

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, please click on HTML or PDF.
Asymmetric Transfer Hydrogenation over Ru—TsDPEN Catalysts Supported on Siliceous Mesocellular Foam.
Authors: Huang Xiaohua , Ying Jackie Y. 
Published: August 2007

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, please click on HTML or PDF.
Highly Enantioselective Pd‐Catalyzed Asymmetric Hydrogenation of Activated Imines.
Authors: Wang You‐Qing , Lu Sheng‐Mei , Zhou Yong‐Gui 
Published: August 2007

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, please click on HTML or PDF.
Asymmetric Aza‐Michael Reactions Catalyzed by Cinchona Alkaloids.
Authors: Perdicchia Dario , Joergensen Karl Anker 
Published: August 2007

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, please click on HTML or PDF.
A Facile Solvent‐Free One‐Pot Three‐Component Mannich Reaction of Aldehydes, Amines and Terminal Alkynes Catalyzed by CuCl2.
Authors: Sharifi Ali , Mirzaei Mojtaba , Naimi‐Jamal M. Reza 
Published: August 2007

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, please click on HTML or PDF.
New Versions of Pd0‐Catalyzed Allylation of C‐Nucleophiles.
Authors: Lozanova A. V. , Ugurchieva T. M. , Veselovsky V. V. 
Published: August 2007

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, please click on HTML or PDF.
Substrate‐Directed Hydroformylation. Part 7. Directed Branched‐Regioselective Hydroformylation of 2‐Substituted Allylic o‐DPPB Esters.
Authors: Breit Bernhard , Gruenanger Christian U. , Abillard Olivier 
Published: August 2007

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, please click on HTML or PDF.
Synthesis of Unsaturated Dibasic Acid Esters from Five‐, Six‐, and Seven‐Membered Cycloalkanones.
Authors: Starostin E. K. , Furman D. B. , Ignatenko A. V. , Barkova A. P. , Kikishin G. I. 
Published: August 2007

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, please click on HTML or PDF.
Investigation of the Scope of a Co‐Mediated O→C Ring Contraction.
Authors: Meek Simon J. , Pradaux Fabienne , Demont Emmanuel H. , Harrity Joseph P. A. 
Published: August 2007

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, please click on HTML or PDF.
Carbanions with Two N Substituents: Nucleophilic Acyl‐Group‐Transfer Reagents.
Authors: Bojer Daniel , Kamps Ina , Tian Xin , Hepp Alexander , Pape Tania , Froehlich Roland , Mitzel Norbert W. 
Published: August 2007

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, please click on HTML or PDF.
Environmentally Benign Oxidation Reaction of Aldehydes to Their Corresponding Carboxylic Acids Using Pd/C with NaBH4 and KOH.
Authors: Lim Minkyung , Yoon Cheol Min , An Gwangil , Rhee Hakjune 
Published: August 2007

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, please click on HTML or PDF.
Pentafluorophenylation of β‐Aminoacrylates
Authors: Levin Vitalij V. , Dilman Alexander D. , Belyakov Pavel A. , Korlyukov Alexander A. , Struchkova Marina I. , Tartakovsky Vladimir A. 
Published: August 2007

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, please click on HTML or PDF.
Trifluoromethanesulfonylimides of Arenehydroxamic Acids and Their Aza Lossen Rearrangement.
Authors: Yagupolskii Lev M. , Shelyazhenko Svetlana V. , Maletina Irina I. , Sokolenko Liubov V. , Chernega Alexander N. , Rusanov Eduard B. , Tsymbal Ivan F. 
Published: August 2007

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, please click on HTML or PDF.
Aza‐Morita—Baylis—Hillman Reactions and Cyclizations of Conjugated Dienes Activated by Sulfone, Ester, and Keto Groups.
Authors: Sorbetti Jovina M. , Clary Kristen N. , Rankic Danica A. , Wulff Jeremy E. , Parvez Masood , Back Thomas G. 
Published: August 2007

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, please click on HTML or PDF.
Methylenedisalicylic Acid Derivatives: New PTP1B Inhibitors that Confer Resistance to Diet‐Induced Obesity.
Authors: Shrestha Suja , Bhattarai Bharat Raj , Chang Kyung Ja , Lee Keun‐Hyeung , Cho Hyeongjin 
Published: August 2007

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, please click on HTML or PDF.
A Facile Approach to the Synthesis of Chiral 2‐Substituted Benzofurans.
Authors: De Luca Lidia , Giacomelli Giampaolo , Nieddu Giammario 
Published: August 2007

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, please click on HTML or PDF.
Stereoselective Synthesis of β‐Carboethoxy‐γ‐lactams via Imino Mukaiyama Aldol‐Type Reaction of 1,4‐Bis(trimethylsilyloxy)‐1,4‐diethoxy‐1,3‐butadiene.
Authors: Pohmakotr Manat , Yotapan Nattawut , Tuchinda Patoomratana , Kuhakarn Chutima , Reutrakul Vichai 
Published: August 2007

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, please click on HTML or PDF.
An Alkoxide‐Directed Intermolecular [2 + 2 + 1] Annulation: A Three‐Component Coupling Reaction for the Synthesis of Tetrasubstituted α,β‐Unsaturated γ‐Lactams.
Authors: McLaughlin Martin , Takahashi Masayuki , Micalizio Glenn C. 
Published: August 2007

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, please click on HTML or PDF.
Synthesis of 2‐Indolylbenzimidazoles Using Fischer′s Indole Method.
Authors: Dubey P. K. , Babu Balaji , Narayana M. Venkata 
Published: August 2007

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, please click on HTML or PDF.
Synthesis and Structures of 1,1′‐Dinaphthopyrans.
Authors: Wang Bin , Li Minxiong , Xu Shansheng , Song Haibin , Wang Baiquan 
Published: August 2007

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, please click on HTML or PDF.