bluuebunny/crossref_metadata_2025_split huggingface dataset:
Triphenylamine Derivatives Containing Nitronyl Nitroxide and Iminyl Nitroxide‐Syntheses, Characterization, Crystal Structures and Magnetic Studies
Authors: Zhang De‐Qing , Wang Zhe‐Ming , Ding Liang , Zhang Bin , Xu Wei , Zhu Dao‐Ben , Yan Chun‐Hua 
Published: September 2010

AbstractNew triphenylamine derivatives 1, 2, 3, and 4 were synthesized and characterized by IR, FAB‐MS, EPR and EA. All of them displayed similar absorption and fluorescence spectra except compound 1, for which a possible explanation was proposed. Quasi‐reversible oxidation waves at about 0.76 V (vs. SCE) and 1.1 V for nitronyl nitroxide and iminyl nitroxide respectively as well as irreversible one at about 1.5 V for triphenylamine group were detected with cyclic voltammetry for compounds 1, 2, 3 and 4. Crystal structures of 2 and 4 were determined by X‐ray diffraction analysis. Their crystal data are as follows: for 2: monoclinic, C2/c, a = 1.69914 (4), b = 1.37435(5), c = 1.24621(5) ran, β= 106.553(2)°, V = 2.7896(2) nm3 Z = 4; for 4: orthorhombic, Pbca, a = 1.95970(6), b = 1.33096(4), c = 4.84691(14) nm, V = 12.6421(7) nm3, Z = 8. Magnetic studies indicated that all of them showed antiferromagnetic properties in solid state, but with strong intermolecular spin‐spin coupling as indicated by the relatively large values of 6, in particular for 4 (θ = −12 K). Possible spin‐spin interaction mechanism was suggested based on the crystal structures of 2 and 4.
Conductivity of I2‐Doped Hightrans‐1,4‐Polybutadiene
Authors: Shi Chen‐Jun , Xue Huai‐Guo , Shen Zhi‐Quan , Zhang Yi‐Feng , Li Yong‐Fang , Yang Chun‐He 
Published: September 2010

AbstractHightrans‐l,4‐polybutadiene ( −96% (trans)) was prepared by lanthanum naphthenate catalytic system. The conductivity of obtained polybutadiene doped with iodine reaches about −100 s/cm, which is 2 orders of magnitude higher than the value reported.4,5During the I2‐doping, the conjugated sequence was formed through double bond shifting reaction. According to the relationship between conductivity and temperature, conducting mechanism of doped hightrans‐l,4‐polybutadiene is fit on variable range hoping (VRH) model.
A Novel Greenish Blue‐emitting Amorphous Molecular Material: 2,5‐Bis {4‐[2‐naphthyl (phenyl) amino ] phenyl} thiophene
Authors: Liu Ping , Tong Zhen 
Published: September 2010

AbstractA novel greenish blue‐emitting amorphous molecular material, 2,5‐bis{4‐[2‐naphthyl(phenyl)amino]phenyl thiophene (BN‐pA‐1T), was designed and synthesized. Its molecular properties, glass‐forming property, and application to an organic EL device were investigated.
Production of Carbon Nanotubes over Pre‐reduced LaCoO3 by Using Fluidized‐bed Catalytic Reactor
Authors: Liu Bao‐Chun , Tang Shui‐Hua , Liang Qi , Gao Li‐Zhen , Zhang Bo‐Lan , Qu Mei‐Zhen , Yu Zuo‐Long 
Published: September 2010

AbstractA technique has been developed to grow carbon nanotubes by flowing acetylene over pre‐reduced LaCoO3 catalyst in a fluidized‐bed catalytic reactor. Carbon nanotubes were characterized by means of SEM and TEM. The pre‐reduced LaCoO3 catalyst was found to be effective in producing carbon nanotubes with even diameter. The effects of reduction temperature of LaCoO3 on the growth of carbon nanotubes were investigated. This process can easily be scaled up.
Synthesis and Antibacterial Activity of 3‐(5‐Methylisoxazol‐3‐yl) −1,2,4‐triazolo [3,4‐b]‐1,3,4‐thiadiazine Derivatives
Authors: Hui Xin‐Ping , Xu Peng‐Fei , Wang Qin , Zhang Qi , Zhang Zi‐Yi 
Published: September 2010

AbstractThe condensed products 2‐10 of 4‐amino‐5‐mercapto‐3‐(5‐methylisoxazol‐3‐yl)‐l,2,4‐triazole (1) with chloroacetaldehyde, 2‐bromocyclohexanone, chloranil, ωbromo‐ω‐(1H‐1, 2,4‐triazol‐l‐yl)acetophenone, 2‐bromo‐4′‐substituted acetophenones and 2‐bromo‐6′‐methoxy‐2′‐acetonaphthone were described. The antibacterial activities were also evaluated.
2D Hydrogen Bonded Copper (II) Coordination Network Constructed by the Combination of Flexible and Rigid Ligands
Authors: Xie Yong‐Shu , Liu Qing‐Liang , Du Chen‐Xia , Jiang Hui , Xu Xiao‐Long , Zhu Yu , Xue Yi 
Published: September 2010

AbstractComplex [Cu(2,2′‐bipy)(H2L1)] (ClO4)2(1) has been synthesized by the self‐assembly of Cu(ClO4)2 with a rigid ligand 2,2′‐bipyridine and a flexible potential tetradentate ligand N, N'‐bis(hydroxyethyl)ethylenediamine (H2L1). Crystal analyses reveal that the potentially tetradentate ligand H2L1 acts in a tridentate mode by the coordination of one hydroxyl oxygen atom and two amino nitrogen atoms. The Cu(II) atom coordinates additionally with two bipyridyl nitrogen atoms, giving a distorted square pyramidal geometry. Each complex molecule is connected with four surrounding molecules along the ac plane by multiple hydrogen bonds, leading to 2D sheets constituted with 0.7874 nm × 1.0891 nm metallomacrocyclic rectangles. Each vertex of the rectangle is occupied by a copper atom, and the four sides are comprised of multiple hydrogen bonds.
Synthesis of Transition Metal‐Modified Carbon Nitride Polymers for Selective Hydrocarbon Oxidation
Authors: Ding Zhengxin , Chen Xiufang , Antonietti Markus , Wang Xinchen 
Published: September 2010

AbstractModification of graphitic carbon nitride (g‐C3N4) photocatalyst with transition metals was achieved with a simple soft‐chemical approach using dicyandiamide monomer and metal chloride as precursors, in combination with a thermal‐induced polycondensation at 600 °C under nitrogen atmosphere. The resultant organic–inorganic hybrid materials were thoroughly characterized by a variety of techniques, including X‐ray diffraction (XRD), UV/Vis spectroscopy, X‐ray photoelectron spectroscopy (XPS), N2‐sorption, transmission electron microscopy (TEM), photoluminescence (PL), and FTIR. Benzene hydroxylation and styrene epoxidation reactions were employed to evaluate the catalytic/photocatalytic activity of the synthesized g‐C3N4‐based catalysts. Results showed that Fe‐ and Cu‐modified g‐C3N4 were active for the hydroxylation of benzene to phenol using H2O2 under mild conditions. It was also found that g‐C3N4 could promote the catalytic epoxidation of styrene using molecular oxygen as the primary oxidant; after modification with Co and Fe, the catalytic performance for styrene epoxidation with O2 could be significantly improved, especially when coupled with visible‐light irradiation.
Variables affecting the quantitation of CD22 in neoplastic B cells
Authors: Jasper Gregory A. , Arun Indu , Venzon David , Kreitman Robert J. , Wayne Alan S. , Yuan Constance M. , Marti Gerald E. , Stetler‐Stevenson Maryalice 
Published: September 2010

AbstractBackground:Quantitative flow cytometry (QFCM) is being applied in the clinical flow cytometry laboratory for diagnosis, prognosis, and assessment of patients receiving antibody‐based therapy. ABC values and the effect of technical variables on CD22 quantitation in acute lymphoblastic leukemia (ALL), chronic lymphocytic leukemia (CLL), mantle cell lymphoma (MCL), follicular lymphoma (FCL), hairy cell leukemia (HCL) and normal B cells were studied.Methods:The QuantiBrite System® was used to determine the level of CD22 expression (mean antibody bound per cell, ABC) by malignant and normal B cells. The intra‐assay variability, number of cells required for precision, effect of delayed processing as well as shipment of peripheral blood specimens (delayed processing and exposure to noncontrolled environments), and the effect of paraformaldehyde fixation on assay results were studied.Results:The QuantiBRITE method of measuring CD22 ABC is precise (median CV 1.6%, 95% confidence interval, 1.2–2.3%) but a threshold of 250 malignant cells is required for reliable CD22 ABC values. Delayed processing and overnight shipment of specimens resulted in significantly different ABC values whereas fixation for up to 12 h had no significant effect. ABC measurements determined that CD22 expression is lower than normal in ALL, CLL, FCL, and MCL but higher than normal in HCL.Conclusions:CD22 expression was atypical in the hematolymphoid malignancies studied and may have diagnostic utility. Technical variables such as cell number analyzed and delayed processing or overnight shipment of specimens impact significantly on the measurement of antigen expression by QFCM in the clinical laboratory. Published 2010 Wiley‐Liss, Inc.
Simultaneous spectrofluorimetric determination of amlodipine besylate and valsartan in their combined tablets
Authors: Shaalan Rasha A. , Belal Tarek S. 
Published: September 2010

AbstractAmlodipine, a dihydropyridine calcium channel blocker, and valsartan, an angiotensin II receptor blocker, are co‐formulated in a single‐dose combination for the treatment of hypertension. The combination is used by patients whose blood pressure is not adequately controlled on either component monotherapy. This work describes a simple, sensitive, and reliable spectrofluorimetric method for the simultaneous determination of the two antihypertensive drugs; amlodipine besylate (AML) and valsartan (VAL) in their combined tablets. The method involved measurement of the native fluorescence at 455 nm (λEx 360 nm) and 378 nm (λEx 245 nm) for AML and VAL, respectively. Analytical performance of the proposed spectrofluorimetric procedure was statistically validated with respect to linearity, ranges, precision, accuracy, selectivity, robustness, detection, and quantification limits. Regression analysis showed good correlation between fluorescence intensity and concentration over the concentration ranges 0.2–3.6 and 0.008–0.080 µg mL−1 for AML and VAL, respectively. The limits of detection were 0.025 and 0.0012 µg mL−1 for AML and VAL, respectively. The proposed method was successfully applied for the assay of the two drugs in their combined pharmaceutical tablets with recoveries not less than 98.85%. No interference was observed from common pharmaceutical additives. The results were favourably compared with those obtained by a reference spectrophotometric method. Copyright © 2010 John Wiley & Sons, Ltd.
5‐HT1A receptor binding is increased after recovery from bulimia nervosa compared to control women and is associated with behavioral inhibition in both groups
Authors: Bailer Ursula F. , Bloss Cinnamon S. , Frank Guido K. , Price Julie C. , Meltzer Carolyn C. , Mathis Chester A. , Geyer Mark A. , Wagner Angela , Becker Carl R. , Schork Nicholas J. , Kaye Walter H. 
Published: September 2010

AbstractObjectiveBecause altered serotonin (5‐HT) function appears to persist after recovery from bulimia nervosa (RBN), we investigated the 5‐HT1A receptor, which could contribute to regulation of appetite, mood, impulse control, or the response to antidepressants.MethodThirteen RBN individuals were compared to 21 healthy control women (CW) using positron emission tomography and [carbonyl‐11C]WAY100635 ([11C]WAY).ResultsRBN had a 23–34% elevation of [11C]WAY binding potential (BP)P in subgenual cingulate, mesial temporal, and parietal regions after adjustments for multiple comparisons. For CW, [11C]WAY BPP was related negatively to novelty seeking, whereas for RBN, [11C]WAY BPP was related positively to harm avoidance and negatively related to sensation seeking.DiscussionAlterations of 5‐HT1A receptor function may provide new insight into efficacy of 5‐HT medication in BN, as well as symptoms such as the ability to inhibit or self‐control the expression of behaviors related to stimulus seeking, aggression, and impulsivity. © 2010 by Wiley Periodicals, Inc. Int J Eat Disord 2011
The efficacy of a brief motivational intervention for individuals with eating disorders: A randomized control trial
Authors: Geller Josie , Brown Krista E. , Srikameswaran Suja 
Published: September 2010

AbstractObjectiveIndividuals with eating disorders are often ambivalent about recovery, and previous research has shown that readiness for change predicts enrollment in intensive treatment, symptom change, dropout, and relapse. Given the demonstrated importance of readiness for change, researchers and clinicians have turned to investigating interventions designed to enhance motivation. The purpose of this research was to determine the efficacy of Readiness and Motivation Therapy (RMT), a five‐session individual preparatory intervention for individuals with eating disorders.MethodParticipants completed the Readiness and Motivation Interview and measures of eating disorder symptomatology, self‐esteem, and psychiatric symptoms at intake. One hundred eighty‐one participants were randomly assigned to the treatment (RMT) or wait‐list control condition and were reassessed at 6‐week and 3‐month follow‐up; 113 completed assessments at all three time points and primary analyses were based on these individuals.ResultsSurprisingly, improvements in readiness for change, depression, drive for thinness, and bulimia symptoms occurred over time in both RMT and control conditions. However, at post and at follow‐up, individuals who received RMT were less likely to have high ambivalence than were those from the control condition.DiscussionRMT may be of benefit to highly reluctant, clinically challenging patients and help them make better use of future, action‐oriented treatment. © 2010 by Wiley Periodicals, Inc. Int J Eat Disord 2011
Suppression of electromagnetic radiation noise from wireless modules in the millimeter‐wave band by means of alumina containing carbon black
Authors: Takase Yasuharu , Hashimoto Osamu , Matsumoto Kouta , Kumada Taketo 
Published: September 2010

AbstractUnwanted electromagnetic (EM) radiation generated from wireless modules in the millimeter‐wave band used for car radar creates errors and results in performance degradation of electronic equipment. In this paper, to reduce these unwanted EM waves, an optimal design to add the function of EM wave absorption to the lid for the module is examined. Alumina‐containing carbon black is used as a wave absorption material for the lid. Absorption of 20 dB or more is obtained as a measured result with the cover added for EM wave absorption at 60 GHz. The wireless module was also analyzed in the millimeter‐wave band with the designed material used for the lid. The radiation and the reflection of electric power were greatly reduced by the loss electric power from the lid. Therefore, effective data for suppressing unwanted EM radiation noise from wireless modules in the millimeter‐wave band can be provided. © 2010 Wiley Periodicals, Inc. Electron Comm Jpn, 93(10): 25–33, 2010; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.10216 3
Synthesis, Characterization and Luminescence Properties of Dipyridin‐2‐ylamine Ligands and Their Bis(2,2′‐bipyridyl)ruthenium(II) Complexes and Labelling Studies of Papain from Carica papaya
Authors: Haquette Pierre , Jacques Julien , Dagorne Samuel , Fosse Céline , Salmain Michèle 
Published: September 2010

AbstractTwo luminescent polypyridyl RuII complexes including dipyridin‐2‐ylamine (dpa) ligands functionalized by a maleimide group, namely [Ru(bpy)2(1a–b)](PF6)2 (bpy = 2,2′‐bipyridyl; 1a = 1‐[4‐(dipyridin‐2‐ylamino)butyl]‐1H‐pyrrole‐2,5‐dione; 1b = 1‐[5‐(dipyridin‐2‐ylamino)pentyl]‐1H‐pyrrole‐2,5‐dione), were synthesized, and the X‐ray structure of [Ru(bpy)2(1b)](PF6)2 was solved. The photophysical properties of these complexes and the starting dipyridin‐2‐ylamine ligands were studied. Upon excitation at their maximum of absorption, the dpa ligands exhibited weak luminescence because of quenching by the maleimide group. Conversely, the complexes displayed noticeable luminescence, with an emission wavelength at 600 nm that originated from a metal‐to‐ligand charge‐transfer (MLCT) triplet state. Reaction of the ligands and the complexes with the cysteine endoproteinase papain was shown to occur at the single free cysteine (Cys25) as expected by the usual reactivity of maleimides. The resulting bioconjugates displayed luminescence assigned to the attached fluorophore, and luminescence enhancement was observed with respect to the starting reagents. The circular dichroism spectrum of one of the papain–RuII bioconjugates displayed a typical bisignate band in the near‐UV range, indicating that the reaction of papain with the rac complex appeared to be stereoselective in favour of the Δ enantiomer.
Methylation of Ylidene‐Triazenes: Insight and Guidance for 1,3‐Dipolar Cycloaddition Reactions
Authors: Tennyson Andrew G. , Moorhead Eric J. , Madison Brian L. , Er Joyce A. V. , Lynch Vincent M. , Bielawski Christopher W. 
Published: September 2010

AbstractReaction of 1,3‐dimesitylimidazolylidene (1) with p‐functionalized phenyl azides 2 (a: H, b: OCH3, c: NO2) afforded the respective imidazolylidene‐triazenes 3 in good yields (65–99 %). Subsequent treatment with methyl iodide produced the corresponding methylated products 4 in near‐quantitative yields (99 %). Analysis by NOESY 1D NMR spectroscopy and single‐crystal X‐ray diffraction revealed that the methylation reaction was regioselective and occurred at the nitrogen atom most distal from the heterocycle. Consistent with the formation of ionic salts, the 1H NMR signals for the imidazole protons in 4 were shifted > 0.5 ppm downfield compared to 1, indicating the accumulation of positive charge. Similarly, the λmax values recorded for 4 exhibited a much narrower range than those for 3 (16 vs. 77 nm, respectively), suggesting that the frontier orbital energies within the former were dominated by Coulombic effects (i.e., the acquisition of positive charge) as opposed to electronic effects from the electron‐donating or withdrawing groups of the aryl azide. Whereas computational analyses revealed that the observed regioselectivity of the methylation reaction may be explained by thermodynamics, kinetic factors (e.g., sterics) may also be important contributors and render one reaction pathway significantly more accessible due to a lower activation energy.
Determination of genetic damage and urinary metabolites in fuel filling station attendants
Authors: Rekhadevi P.V. , Mahboob M. , Rahman M.F. , Grover Paramjit 
Published: September 2010

AbstractFuel (diesel and petrol) constitutes a complex mixture of volatile flammable liquid hydrocarbons among them benzene (BZ), toluene (TOL), and xylene (XYL) are considered to be the most hazardous, predominantly BZ because of its carcinogenic potency. Exposure to these compounds may have an impact on the health of the exposed subjects. Hence, genotoxicity and quantitative analysis of these compounds was performed in blood and urine samples of 200 workers exposed to fuel in filling stations and compared to controls. The level of genetic damage was determined by micronucleus test (MNT) in buccal epithelial cells (BEC) and chromosomal aberrations (CA) assay in peripheral blood lymphocytes (PBL) of fuel filling station attendants (FFSA) and compared to a matched control group. Urine analysis for BZ and its metabolites, phenol (Ph), trans, trans‐Muconic Acid (t, t‐MA), and S‐Phenyl Mercapturic Acid (S‐PMA) was done in all the study subjects. The results of our study revealed that exposure to BTX in petrol vapors induced a statistically significant increase in the frequency of micronuclei (MN) and CA in the exposed subjects than in controls (P < 0.05). There was a significant rise in the levels of urinary BZ, Ph, t, t‐MA, and S‐PMA in the exposed subjects. Our study highlights the significance of MNT, CA, and urinary metabolites as potential biological exposure indices of genetic damage in FFSA. This study suggests the need for regular monitoring of FFSA for possible exposure to BTX as a precautionary and preventive step to minimize exposure and reduce the associated health risks. Environ. Mol. Mutagen., 2011. © 2010 Wiley‐Liss, Inc.
Bi‐directional coupled tuned mass dampers for the seismic response control of two‐way asymmetric‐plan buildings
Authors: Lin Jui‐Liang , Tsai Keh‐Chyuan , Yu Yi‐Jer 
Published: September 2010

AbstractThis paper proposes bi‐directional coupled tuned mass dampers (BiCTMDs) for the seismic response control of two‐way asymmetric‐plan buildings subjected to bi‐directional ground motions. The proposed BiCTMD was developed from the three‐degree‐of‐freedom modal system, which represents the vibration mode of a two‐way asymmetric‐plan building. The performance of the proposed BiCTMD for the seismic response control of elastic two‐way asymmetric‐plan buildings was verified by investigating the reductions of the amplitudes of the associated frequency response functions. In addition, the investigation showed that the proposed BiCTMD is effective in reducing the seismic damage of inelastic asymmetric‐plan buildings. Therefore, the BiCTMD is an effective approach for the seismic response control of both elastic and inelastic two‐way asymmetric‐plan buildings. Copyright © 2010 John Wiley & Sons, Ltd.
Response of white sucker (Catostomus commersoni) to pulp and paper mill effluent in the Androscoggin River, Maine, USA
Authors: Mower Barry F , Munkittrick Kelly R , McMaster Mark E , Van Beneden Rebecca J 
Published: September 2010

AbstractAdverse effects of pulp and paper mill effluent on fish populations have been well documented in many countries over the last two decades. Some of the initial studies were at mills with conventional chlorine bleaching and no secondary effluent treatment. Following installation of secondary treatment, changes in bleaching technology to elemental chlorine-free bleaching, and other process changes, adverse effects on fish were reduced or eliminated at some mills. Because no two mills are exactly alike, it is difficult to predict adverse impacts of any given mill on fish populations. In 1994, a study of female white sucker (Catostomus commersoni) in the Androscoggin River, Maine, USA, showed induction of mixed function oxidase, reductions in gonad size and plasma estradiol, and an increase in plasma testosterone in fish downstream of discharges from three large bleached kraft pulp and paper mills, and host community municipal sewage treatment plants (STP). After all three mills switched to elemental chlorine-free bleaching in the late 1990s, studies from 2001 to 2003 found that the pattern of reproductive impacts on white sucker populations measured in 1994 was not repeated. In addition, population estimates of white sucker from 2002 to 2003 using mark–recapture techniques found that densities and biomass were well within the range of those of a reference population, and of those reported in the literature for unimpacted populations. Detailed studies immediately above and below each mill/sewage treatment plant showed no evidence of reproductive effects. However, a clear pattern of eutrophication was noted, which increased cumulatively downstream below each mill/STP. Environ. Toxicol. Chem. 2011;30:142–153. © 2010 SETAC