bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Approach towards Synthesis of Nanoarchitectured LiNi1/3Co1/3Mn1/3O2 Cathode Material for Lithium Ion Batteries
Authors: Hua Weibo , Wang Yanjie , Zhong Yanjun , Wang Guoping , Zhong Benhe , Fang Baizeng , Guo Xiaodong , Liao Shixuan , Wang Haijiang 
Published: January 2015

AbstractTo explore advanced cathode materials for lithium ion batteries (LIBs), a nanoarchitectured LiNi1/3Co1/3Mn1/3O2 (LNCM) material is developed using a modified carbonate coprecipitation method in combination with a vacuum distillation‐crystallisation process. Compared with the LNCM materials produced by a traditional carbonate coprecipitation method, the prepared LNCM material synthesized through this modified method reveals a better hexagonal layered structure, smaller particle sizes (ca. 110.5 nm), and higher specific surface areas. Because of its unique structural characteristics, the as‐prepared LNCM material demonstrates excellent electrochemical properties including high rate capability and good cycleability when it is utilized as a cathode in the lithium ion battery (LIB).
Sensitive Determination of Five Priority Haloacetic Acids by Electromembrane Extraction with Capillary Electrophoresis
Authors: Zhang Xiaoli , Zhang Haitao , Liu Yan , Guo Lin , Ye Jiannong , Chu Qingcui 
Published: January 2015

AbstractA method for sensitive determination of five priority haloacetic acids in drinking water has been developed for the first time based on electromembrane extraction (EME) prior to CZE with capacitively coupled contactless conductivity detection (CZE‐C4D). The target analytes were extracted from 10 mL of the sample solution (donor phase), through the supported liquid membrane (using a polypropylene membrane supporting 1‐octanol), and into 10 µL of 50 mmol/L NaAc solution (acceptor phase). The extracted solution was directly analyzed by CZE‐C4D without derivatization. Several factors that affect separation, detection and extraction efficiency were investigated. Under the optimum conditions, five haloacetic acids (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid) could be well separated from other components coexisting in water samples within 23 min, exhibiting a linear calibration over two orders of magnitude (r⪖0.9943); the enrichment factors at 430–671 were obtained in a 30 min of extraction, and the limits of detection were in the range of 0.17–0.61 ng/mL. The intraday relative standard deviations for peak areas investigated at 10 ng/mL were between 1.2% and 9.7% for the combined EME‐CZE‐C4D procedure. This approach offers an attractive alternative to the officially proposed method for purified drinking water analysis, which requires derivatization procedure prior to gas chromatography analysis.
Transition Metal Free Chemoselective Reduction of α,β‐Unsaturated Ketones to Saturated Ketones Using Tosyl Hydrazide as a Hydrogen Donor
Authors: Girish Yarabally R , Raghavendra Kanchipura R , Nagaraja Dasappa , Kumar Kothanahally S Sharath , Shashikanth Sheena 
Published: January 2015

AbstractAn efficient, inexpensive and simple method for the reduction of various α,β‐unsaturated ketones to corresponding saturated ketones using tosyl hydrazide as a hydrogen donor in DMF using calcium oxide powder has been reported. A variety of enones underwent reduction without forming undesirable side products. High chemoselectivity, broad functional group tolerance and good yields are the noteworthy features of this protocol.
Interaction of Plasma Proteins with Tri‐quaternary Ammonium Salt Cationic Surfactant Studied by QCM‐D
Authors: Xi Man , Zhang Baoyan 
Published: January 2015

AbstractA tri‐quaternary ammonium salt cationic surfactant was synthesized. Its structure was confirmed by using Fourier‐transform infrared spectroscopy, 1H nuclear magnetic resonance spectroscopy, and X‐ray photoelectron spectroscopy analyses. Three model surfaces, including Au‐CH3, Au‐OH and Au‐COOH, were fabricated. Adsorptions of surfactant on the three model surfaces and subsequent plasma proteins adsorption were investigated by quartz crystal microbalance with dissipation (QCM‐D). The mass of surfactant on the Au‐COOH surface was the largest, followed by that on the Au‐CH3 surface, and that on the Au‐OH surface. These results suggested that the main driving force of surfactant immobilization was electrostatic interaction followed by hydrophobic interaction. Based on the results obtained, we concluded that the protein mass adsorbed on Au‐CH3‐S, Au‐OH‐S, and Au‐COOH‐S surfaces depended on the protein size and orientation. The mass and thickness of S on the Au‐COOH surface is the largest and the protein adsorption capacity of Au‐COOH‐S surface is inferior to that of Au‐CH3‐S. The Au‐COOH‐S surface could inhibit lysozyme adsorption, maintain the adsorption balance of bovine serum albumin, and induce fibrinogen‐binding protein adsorption.
Highly Enantioselective Direct Asymmetric Aldol Reaction Catalyzed by 4,5‐Methano‐L‐proline
Authors: Zhang Yukun , Zhu Jun , Yu Na , Yu Han 
Published: January 2015

AbstractThe 4,5‐methano‐L‐proline was used as chiral organocatalysts in direct asymmetric aldol reactions. Under the optimal conditions, excellent enantioselectivities (up to 99% ee) were obtained with high chemical yields (up to 95%) for a series of aldehydes using only 5 mol% catalyst loading. To show the practicality of the method, the reaction was tested at a large scale. The reaction was complete in 16 h, and the aldol product was obtained in 86% yield and 93% ee.
Synthesis and Catalytic Activity of a Grubbs‐Hoveyda Pre‐catalyst Having a Trimeric Resting State
Authors: Liu Guiyan , Wu Bin , Wang Jianhui 
Published: January 2015

AbstractA Grubbs‐Hoveyda pre‐catalyst having a trimeric resting state based on 2,4,6‐trichloro‐1,3,5‐triazine was synthesized and the complex was characterized by NMR, HRMS and elemental analysis. The activity of this complex for ring‐closing metathesis (RCM) was investigated. The catalytic system possesses high catalytic activity for many different olefin substrates.
Non‐parametric generalized linear mixed models in small area estimation
Authors: Torabi Mahmoud , Shokoohi Farhad 
Published: January 2015

AbstractMixed models are commonly used for the analysis of small area estimation. In particular, small area estimation has been extensively studied under linear mixed models. Recently, small area estimation under the linear mixed model with penalized spline (P‐spline) regression model, for fixed part of the model, has been proposed. However, in practice there are many situations that we have counts or proportions in small areas; for example a dataset on the number of asthma physician visits in small areas in Manitoba. In particular, the covariates age, genetic, environmental factors, among other covariates seem to predict asthma physician visits, however, these relationships may not be linear (see Section 5). In this paper, small area estimation under generalized linear mixed models using P‐spline regression models is proposed to cover Normal and non‐Normal responses. In particular, the empirical best predictor of small area parameters with corresponding prediction intervals are studied. The performance of the proposed approach is evaluated through simulation studies and also by a real dataset. The Canadian Journal of Statistics 43: 82–96; 2015 © 2015 Statistical Society of Canada
Synthesis and Characterization of Bio‐Inspired Diiron Complexes and Their Catalytic Activity for Direct Hydroxylation of Aromatic Compounds
Authors: Wang Xiao , Zhang Tianyong , Yang Qiusheng , Jiang Shuang , Li Bin 
Published: January 2015

AbstractThree [FeFe]‐hydrogenase model complexes [(μ‐dmedt){Fe(CO)3}2] [1; dmedt = SCH(CH3)CH(CH3)S], [(μ‐dmedt){Fe(CO)3}{Fe (CO)2PPh3}] (1‐PPh3), and [(μ‐dmest){Fe(CO)3}2] [1‐O; dmest = SCH(CH3)CH(CH3)S(O)], 1‐O were synthesized and characterized. These model complexes, which are generally used as the functional biomimics of the hydrogen‐producing dinuclear active site in [FeFe]‐hydrogenase, were used as efficient catalysts for the selective hydroxylation of aromatic compounds to phenols under mild conditions. Because both the dithiolato‐sulfur site and the Fe–Fe bond in the model complexes were possible active oxidation sites, DFT calculations were used to investigate the oxygenated products, that is, the S‐oxygenated products or the Fe‐oxygenated forms of the model complexes, which may be involved in the catalytic cycle. The experimental and computational results indicate that the thermodynamically favored Fe‐oxygenated intermediates dominate the hydroxylation of the aromatic compounds. A possible mechanism for the hydroxylation is also proposed.
Pyrididine–Carboxylate Ligands as Double‐Bridge Spacers in CuI Metallacycles
Authors: Wu Xialu , Zhang Wenhua , Zhang Xinhai , Ding Nini , Hor T. S. Andy 
Published: January 2015

AbstractThe addition of pyridine‐3‐carboxylic acid (3‐PyCOOH), (E)‐3‐(pyridin‐3‐yl)acrylic acid (3‐PyCH=CHCOOH), or 3‐(pyridin‐4‐yl)benzoic acid (3‐PyPhCOOH) to the Lewis acidic [Cu(dppf)(NCMe)2][BF4]·2MeCN·2H2O [1·2MeCN·2H2O, dppf = 1,1′‐bis(diphenylphosphanyl)ferrocene] in the presence of NEt3 afforded the complexes [Cu2(dppf)2(3‐PyCOO)2]·3CHCl3 (2·3CHCl3), [Cu2(dppf)2(3‐PyCH=CHCOO)2]·CH2Cl2·C6H14 (3·CH2Cl2·C6H14), and [Cu2(dppf)2(3‐PyPhCOO)2]·CH2Cl2 (4·CH2Cl2) with a common metallomacrocycle core and doubly bridging pyridine–carboxylate ligands as spacers. These dinuclear complexes have been structurally characterized by single‐crystal X‐ray crystallography, and their emission activities have been studied.
Photoluminescent One‐Dimensional Coordination Polymers from Suitable Pyridine Antenna and LnCl3 for Visible and Near‐IR Emission
Authors: Matthes Philipp R. , Eyley Jennifer , Klein Johannes H. , Kuzmanoski Ana , Lambert Christoph , Feldmann Claus , Müller‐Buschbaum Klaus 
Published: January 2015

AbstractThe series of one‐dimensional coordination polymers ∞1[LnCl3(bipy)(py)2]·py [bipy = 4,4′‐bipyridine, py = pyridine; Ln = Gd, Tb, Dy, Ho, Er, Yb] as well as ∞1[Lu2Cl5(bipy)2(py)4]∞1[LuCl4(bipy)] were synthesized by the reactions of anhydrous LnCl3 with bipy and py. The formation of extended zigzag chains and saltlike band structures with cationic and anionic strands is observed. Pyridine and 4,4′‐bipyridine ligands serve as suitable antennas for lanthanide‐based luminescence in the visible and near‐infrared range through effective sensitization by the ligands followed by emission through the emissive intra‐4f transitions of the Ln3+ (Tb3+, Dy3+, Er3+, Yb3+) ions. For ∞1[GdCl3(bipy)(py)2]·py, phosphorescence of the coordinated 4,4′‐bipyridine ligand with excitation‐dependent chromaticity leads to ligand‐based emission in the visible range. These processes cannot be observed for the free ligand. The coordination polymers also extend the range of photoluminescence properties of related complexes and metal–organic frameworks (MOFs) and show high efficiency with a quantum yield of 86 % for the Tb3+ compound.
Rhenium(I) Complexes with Alkynylphosphane Ligands: Structural, Photophysical, and Theoretical Studies
Authors: Kondrasenko Ilya , Kisel Kristina S. , Karttunen Antti J. , Jänis Janne , Grachova Elena V. , Tunik Sergey P. , Koshevoy Igor O. 
Published: January 2015

AbstractA family of mono‐ and bidentate alkynylphosphanes has been used for the preparation of the rhenium(I) phenanthroline complexes [Re(phen)(CO)2(L)2]+ (L = monophosphane), [{Re(phen)(CO)3}2(L)]2+ (L = diphosphane), and [{Re(phen)(CO)2}2(L)2]2+ (L = diphosphane). The dicarbonyl compounds display intense luminescence at 298 K both in solution and in the solid state (Φem ≤ 44 %). The tricarbonyl complexes demonstrate a strong dependence of the emission efficiency on the ancillary ligand L through a pronounced π–π* contribution of the diphosphane to the electronic transitions, as confirmed by TDDFT studies. In the solid state, the complexes [Re(phen)(CO)2(L)2]+ display significant luminescence rigidochromism that is influenced by the structure of the phosphane substituents. The latter provide a means to fine‐tune the photophysical properties of this class of luminophores through variation of the stereochemical characteristics of the ligands that are not directly involved in the electronic transitions.
Electrochemical hematocrit determination in a direct current microfluidic device
Authors: Lee Hwi Yong , Barber Cedrick , Rogers Jessika A. , Minerick Adrienne R. 
Published: January 2015

Hematocrit (HCT) tests are widely performed to screen blood donors and to diagnose medical conditions. Current HCT test methods include conventional microhematocrit, Coulter counter, CuSO4 specific gravity, and conductivity‐based point‐of‐care (POC) HCT devices, which can be either expensive, environmentally inadvisable, or complicated. In the present work, we introduce a new and simple microfluidic system for a POC HCT determination. HCT was determined by measuring current responses of blood under 100 V DC for 1 min in a microfluidic device containing a single microchannel with dimensions of 180 μm by 70 μm and 10 mm long. Current responses of red blood cell (RBC) suspensions in PBS or separately plasma at HCT concentrations of 10, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 70 vol% were measured to show feasibility of the microfluidic system for HCT determination. Key parameters affecting current responses included electrolysis bubbles and irreversible RBC adsorption; parameters were optimized via addition of nonionic surfactant Triton X‐100 into sample solution and carbonizing electrode surfaces. The linear trend line of current responses over a range of RBC concentrations were obtained in both PBS and plasma. This work suggested that a simple microfluidic device could be a promising platform for a new POC HCT device.
Cross‐linked aggregation of glutamate decarboxylase to extend its activity range toward alkaline pH
Authors: Dinh Thu Huong , Jang Nan Young , McDonald Karen A , Won Keehoon 
Published: January 2015

AbstractBACKGROUNDGamma(γ)‐aminobutyric acid (GABA) is produced through an α‐decarboxylation reaction of L‐monosodium glutamate (MSG) using glutamate decarboxylase (GAD). The pH rise caused by the reaction inactivates the enzyme catalyst, which is active only under acidic conditions, and consequently leads to low reaction conversions. Employment of conventional acids and buffers inevitably forms salts, which result in serious problems in separation and purification of GABA. It is essential to render GAD active even at neutral and alkaline pHs. In the present study, we first apply a cross‐linked aggregation method in order to extend the active range of GAD toward alkaline pH.RESULTSGAD from Escherichia coli was prepared as cross‐linked enzyme aggregate (CLEA) in which the enzyme was precipitated using ammonium sulfate (60% saturation) and then cross‐linked with glutaraldehyde (2%) in sodium acetate buffer (0.2 mol L−1, pH 4.6). The cross‐linked aggregation extended an active pH range of GAD from 5.5 up to 8.0; as a result, the reaction conversion of 1 mol L−1 MSG into GABA was improved from 13% to 22%. Moreover, the CLEA of GAD was easily recovered after the reaction and reused retaining >95% of its initial activity during the first four cycles and >60% activity at the 10th cycle.CONCLUSIONCross‐linked aggregation could make GAD active even at neutral and alkaline pHs. It is shown to be a useful method capable of facilitating recovery and reuse of the enzyme as well as increasing the reaction conversion by extending the active pH range of GAD. © 2015 Society of Chemical Industry
Lipid degradation and sensory characteristics of ripened sausages packed in modified atmosphere at different carbon dioxide concentrations
Authors: Summo Carmine , Pasqualone Antonella , Paradiso Vito Michele , Centomani Isabella , Centoducati Gerardo , Caponio Francesco 
Published: January 2015

AbstractBACKGROUNDConflicting results about the effect of modified atmosphere packaging (MAP) rich in CO2 on the quality of different kinds of meat products are present in the literature. In this study, the degree of lipid degradation and the sensory characteristics of ripened sausages packed in modified atmosphere at three different carbon dioxide (CO2) concentrations were evaluated during 5 months of storage.RESULTSThe degree of hydrolytic degradation of the lipid fraction was found to decrease with increasing CO2 concentration. Similarly, oxidative phenomena occurred at a lower rate when the CO2 concentration increased. The variations in CO2 concentration influenced the perception of rancid flavor in the examined sausages.CONCLUSIONAn increase in CO2 concentration in MAP slowed down the evolution of lipid oxidation owing to the minor extent of hydrolytic degradation, whose products have pro‐oxidant activity. This effect was more evident in the first 2 months of storage. © 2015 Society of Chemical Industry
Do‐It‐Yourself Projects as Path toward Female Empowerment in a Gendered Market Place
Authors: Wolf Marco , Albinsson Pia A. , Becker Cherylynn 
Published: January 2015

ABSTRACTThe role of women as homeowners and heads of households are changing the dynamics in which women engage in do‐it‐yourself (DIY) behavior. Because there is limited extant theory associated with female involvement in DIY behavior, a qualitative study using in‐depth interviews was conducted. Through grounded theory analysis several themes emerged during the coding process, and the themes of empowerment were especially relevant to the informants in this study. Five dimensions of empowerment were identified: empowerment through project initiation, production mastery, adding economic value to goods and services, unleashing creative potential, and empowerment through ownership. The findings show women's involvement in DIY behavior and the consumption of DIY‐related goods is closely tied to the concept of female empowerment.
Consumer–Brand Relationships: A Contrast of Nostalgic and Non‐Nostalgic Brands
Authors: Kessous Aurélie , Roux Elyette , Chandon Jean‐Louis 
Published: January 2015

ABSTRACTThis research examined how consumer–brand relationships change when one contrasts brands perceived as nostalgic with brands perceived as non‐nostalgic. Paired comparisons of brands in six product categories revealed that brand attachment, self‐brand connections, and storytelling, as well as, the propensity to offer the brand as a gift and collect brand‐derived products, depend on the nostalgic status of the brand. On a sample of 606 consumers, the results showed that a brand's nostalgic status has a positive effect on attachment, self‐brand connections, and storytelling. These effects had not previously been considered in nostalgia research. Furthermore, the nostalgic status of a brand has positive effects in terms of intention to purchase the brand as a gift and collect brand‐derived products. Moreover, ANOVA results illustrate that consumer relationships with nostalgic brands are systematically stronger than with non‐nostalgic brands. Finally, results indicated that product category moderates all of the dimensions of brand relationships while gender does not.
Surgical treatment of systemic sclerosis—is it justified to offer peripheral sympathectomy earlier in the disease process?
Authors: Momeni Arash , Sorice Sarah C. , Valenzuela Antonia , Fiorentino David F. , Chung Lorinda , Chang James 
Published: January 2015

PurposeSystemic sclerosis (SSc) is a rare connective tissue disease associated with significant digital vasculopathy. Peripheral sympathectomy is frequently offered late in the disease process after severe digital ischemia has already occurred with patients being symptomatic for numerous years. The purpose of the present study was to analyze the results of peripheral sympathectomy in patients with a confirmed diagnosis of SSc.Patients and methodsA retrospective analysis of 17 patients (26 hands) who underwent peripheral sympathectomy between January 2003 and September 2013 was performed. Data regarding patient demographics, clinical features, and postoperative outcomes were retrieved. Of note, preoperative pain was present in all patients with a mean duration of 9.6 years prior to peripheral sympathectomy.ResultsPain improvement/resolution was seen in 24 hands (92.3%). Digital ulcers healed in all patients with only two patients (two hands; 7.7%) requiring surgical intervention for ulcer recurrence 6 months and 4.5 years later. Minor complications were seen in seven hands (26.9%); including infection, wound opening, and stitch abscess, but none required surgical intervention. Seven of eight patients queried would have preferred surgical treatment at an earlier point in the disease process.ConclusionPeripheral sympathectomy is a well‐tolerated procedure in patients with SSc and is associated with predictable pain relief and ulcer healing in the majority of patients. In light of these findings it seems prudent to offer surgical treatment not as a last resort but rather earlier in the disease process to decrease the duration that patients suffer pain. © 2015 Wiley Periodicals, Inc. Microsurgery 35:441–446, 2015.
An energy‐momentum method for in‐plane geometrically exact Euler–Bernoulli beam dynamics
Authors: Sansour Carlo , Nguyen Tien Long , Hjiaj Mohammed 
Published: January 2015

SummaryNonlinear geometrically exact rod dynamics is of great interest in many areas of engineering. In recent years, the research was focused towards Timoshenko‐type rod theories where shearing is of importance. However, in many general model of mechanisms and spatial deformations, it is desirable to have a displacement‐only formulation, which brings us back to the classical Bernoulli beam. While it is well known for linear analysis, the Bernoulli beam is not as common in geometrically exact models of dynamics, especially when we want to incorporate the rotational inertia into the model. This paper is about the development of an energy‐momentum integration scheme for the geometrically exact Bernoulli‐type rod. We will show that the task is achievable and devise a general framework to do so. Copyright © 2014 John Wiley & Sons, Ltd.
Post‐relapse survival in patients with Ewing sarcoma
Authors: Ferrari Stefano , Luksch Roberto , Hall Kirsten Sundby , Fagioli Franca , Prete Arcangelo , Tamburini Angela , Tienghi Amelia , DiGirolamo Stefania , Paioli Anna , Abate Massimo Eraldo , Podda Marta , Cammelli Silvia , Eriksson Mikael , Brach del Prever Adalberto 
Published: January 2015

BackgroundPost‐relapse survival (PRS) was evaluated in patients with Ewing sarcoma (EWS) enrolled in chemotherapy protocols based on the use of high‐dose chemotherapy with busulfan and melfalan (HDT) as a first‐line consolidation treatment in high‐risk patients.ProcedureEWS patients enrolled in ISG/SSG III and IV trials who relapsed after complete remission were included in the analysis. At recurrence, chemotherapy based on high‐dose ifosfamide was foreseen, and patients who responded but had not received HDT underwent consolidation therapy with HDT.ResultsData from 107 EWS patients were included in the analysis. Median time to recurrence (RFI) was 18 months, and 45 (42%) patients had multiple sites of recurrence. Patients who had previously been treated with HDT had a significantly (P = 0.02) shorter RFI and were less likely to achieve a second complete remission (CR2). CR2 status was achieved by 42 (39%) patients. Fifty patients received high‐dose IFO (20 went to consolidation HDT). The 5‐year PRS was 19% (95% CI 11 to 27%). With CR2, the 5‐year PRS was 48% (95% CI 31 to 64%). Without CR2, median time to death was six months (range 1–45 months). According to the multivariate analysis, patients younger than 15 years, recurrence to the lung only, and RFI longer than 24 months significantly influenced the probability of PRS.ConclusionsAge, pattern of recurrence, RFI, and response to second‐line chemotherapy influence post‐relapse survival in patients with recurrent Ewing sarcoma. No survival advantage was observed from chemotherapy consolidation with HDT. Pediatr Blood Cancer 2015;62:994–999. © 2015 Wiley Periodicals, Inc.