bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Accrual Anomaly: Risk or Mispricing?
Authors: Hirshleifer David , Hou Kewei , Teoh Siew Hong 
Published: February 2011

We document considerable return comovement associated with accruals after controlling for other common factors. An accrual-based factor-mimicking portfolio has a Sharpe ratio of 0.16, higher than that of the market factor or the SMB and HML factors of Fama and French. According to rational frictionless asset pricing models, the ability of accruals to predict returns should come from the loadings on this accrual factor-mimicking portfolio. However, our tests indicate that it is the accrual characteristic rather than the accrual factor loading that predicts returns. These findings suggest that investors misvalue the accrual characteristic and cast doubt on the rational risk explanation. This paper was accepted by Brad Barber, Teck Ho, and Terrance Odean, special issue editors.
Market Madness? The Case of Mad Money
Authors: Engelberg Joseph , Sasseville Caroline , Williams Jared 
Published: February 2011

We use the popular television show Mad Money, hosted by Jim Cramer, to test theories of attention and limits to arbitrage. Stock recommendations on Mad Money constitute attention shocks to a large audience of individual traders. We find that stock recommendations lead to large overnight returns that subsequently reverse over the next few months. The spike-reversal pattern is strongest among small, illiquid stocks that are hard to arbitrage. Using daily Nielsen ratings as a direct measure of attention, we find that the overnight return is strongest when high-income viewership is high. We also find weak price effects among sell recommendations. Taken together, the evidence supports the retail attention hypothesis of Barber and Odean (Barber, B., T. Odean. 2008. All that glitters: The effect of attention and news on the buying behavior of individual and institutional investors. Rev. Financial Stud. 21(2) 785–818) and illustrates the potential role of media in generating mispricing. This paper was accepted by Brad Barber, Teck Ho, and Terrance Odean, special issue editors.
Promised Delivery Time and Capacity Games in Time-Based Competition
Authors: Shang Weixin , Liu Liming 
Published: February 2011

We investigate firms' competitive behaviors in industries where customers are sensitive to both promised delivery time (PDT) and quality of service (QoS) measured by the on-time delivery rate. To study the competition in PDT at the marketing level, we construct an oligopoly game with an external QoS requirement. We show that there exists a unique Nash equilibrium, and the equilibrium QoS exhibits a switching surface structure with respect to capacities. To study the competition in capacity at the strategic level, we construct a two-stage game in which the firms compete in terms of their capacities in stage 1 and in terms of PDT in stage 2. We show the existence of two different types of pure strategy equilibria and characterize them. This study provides the following insights: an index of time-based competitive advantage (ITCA) and the first-mover advantage determine the positions of the firms in time-based competition; either the well-known prisoner's dilemma or off-equilibrium behaviors due to different preferences for equilibria (when multiple equilibria exist) may lead the firms to overinvest in capacity, but no one may gain a competitive advantage; a uniform improvement in internal efficiency (i.e., a uniform capacity cost reduction) may harm everyone; quality differentiation (i.e., going beyond the QoS benchmark) plays a dual role in time-based competition, either helping a firm with a larger ITCA to compete more effectively, or helping a firm possibly with a smaller ITCA to preempt competitors and protect its market advantage. This paper was accepted by Paul H. Zipkin, operations and supply chain management.
Sharing Demand Information in Competing Supply Chains with Production Diseconomies
Authors: Ha Albert Y. , Tong Shilu , Zhang Hongtao 
Published: February 2011

This paper studies the incentive for vertical information sharing in competing supply chains with production technologies that exhibit diseconomies of scale. We consider a model of two supply chains each consisting of one manufacturer selling to one retailer, with the retailers engaging in Cournot or Bertrand competition. For Cournot retail competition, we show that information sharing benefits a supply chain when (1) the production diseconomy is large and (2) either competition is less intense or at least one retailer's information is less accurate. A supply chain may become worse off when making its information more accurate or production diseconomy smaller, if such an improvement induces the firms in the rival supply chain to cease sharing information. For Bertrand retail competition, we show that information sharing benefits a supply chain when (1) the production diseconomy is large and (2) either competition is less intense or information is more accurate. Under Bertrand competition a manufacturer may be worse off by receiving information, which is never the case under Cournot competition. Information sharing in one supply chain triggers a competitive reaction from the other supply chain and this reaction is damaging to the first supply chain under Cournot competition but may be beneficial under Bertrand competition. This paper was accepted by Martin Lariviere, operations management.
Circadian Rhythm of Circulating Fibroblast Growth Factor 21 Is Related to Diurnal Changes in Fatty Acids in Humans
Authors: Yu Haoyong , Xia Fuzhen , Lam Karen SL , Wang Yu , Bao Yuqian , Zhang Jialiang , Gu Yunjuan , Zhou Pengcheng , Lu Junxi , Jia Weiping , Xu Aimin 
Published: February 2011

BACKGROUND
Fibroblast growth factor (FGF) 21 is an endocrine factor actively involved in glucose and lipid metabolism in rodents. However, little is known about its physiological function and regulation in humans. This study investigated the diurnal changes in circulating FGF21 concentrations and their association with other metabolic markers in both obese and lean individuals.

METHODS
A total of 36 volunteers were assigned to 2 groups. One group received 3 standardized meals and another group was fasted for 24 h. Blood samples were drawn every 30 min throughout a 24-h period. Circulating FGF21 concentrations were measured with an in-house chemiluminescence immunoassay. The effects of fatty acids on hepatic production of FGF21 were determined by using real-time PCR.

RESULTS
In both the fasting and standardized meals groups, circulating FGF21 began to rise at midnight, reaching a peak in the early morning and then declining to basal concentrations early in the afternoon. Baseline concentrations of circulating FGF21 were much higher in obese individuals than in lean individuals (P &lt; 0.05). However, the magnitude of the nocturnal rise in circulating FGF21 was significantly blunted in obese individuals. The 24-h oscillatory pattern of circulating FGF21 resembled that of free fatty acids and cortisol, but was opposite to the patterns of insulin and glucose. Unsaturated fatty acids induced time-dependent expression of FGF21 mRNA in human hepatocytes.

CONCLUSIONS
These findings support the role of FGF21 as an important metabolic regulator that integrates the circadian rhythm with energy homeostasis in humans. Diurnal rhythms of circulating FGF21 could be partly caused by the oscillation of free fatty acids.
Aldose reductase: new insights for an old enzyme
Authors: Ramana Kota V. 
Published: February 2011

AbstractIn the past years aldose reductase (AKR1B1; AR) is thought to be involved in the pathogenesis of secondary diabetic complications such as retinopathy, neuropathy, nephropathy and cataractogenesis. Subsequently, several AR inhibitors have been developed and tested for diabetic complications. Although these inhibitors have found to be safe for human use, they have not been successful in clinical studies because of limited efficacy. Recently, the potential physiological role of AR has been reassessed from a different point of view. Diverse groups suggested that AR, in addition to reducing glucose, also efficiently reduces oxidative stress-generated lipid peroxidation-derived aldehydes and their glutathione conjugates. Because lipid aldehydes alter cellular signals by regulating the activation of transcription factors such as NF-κB and AP1, inhibition of AR could inhibit such events. Indeed, a wide array of recent experimental evidence indicates that the inhibition of AR prevents oxidative stress-induced activation of NF-κB and AP1 signals that lead to cell death or growth. Furthermore, AR inhibitors have been shown to prevent inflammatory complications such as sepsis, asthma, colon cancer and uveitis in rodent animal models. The new experimentalin vitroandin vivodata has provided a basis for investigating the clinical efficacy of AR inhibitors in preventing other inflammatory complications than diabetes. This review describes how recent studies have identified novel plethoric physiological and pathophysiological significance of AR in mediating inflammatory complications, and how the discovery of such new insights for this old enzyme could have considerable importance in envisioning potential new therapeutic strategies for the prevention or treatment of inflammatory diseases.
Crystallographic orientation relationship between bastnaesite, fluocerite and cerianite observed in a crystal from the pikes peak pegmatites
Authors: Müller Mathis M. , Kleebe Hans-Joachim , Lauterbach Stefan , Zito Gary 
Published: February 2011

AbstractThe crystallographic orientation relationship of a fluocerite (Ce,La)F3crystal overgrown with bastnaesite (Ce,La)[CO3]F from the Pikes Peak area in Colorado, USA was investigated by transmission electron microscopy. The epitaxial overgrowth of bastnaesite on fluocerite was confirmed by evaluating the electron diffraction patterns of both minerals. During the examination, a third mineral phase, which was unexpected in this phase assemblage, was detected and identified as cerianite, CeO2, by EDS analysis in conjunction with electron diffraction. Its orientation relationship to the two main mineral phases can be described as a syntactical growth. The La-concentration of bastnaesite changes with distance from the cerianite interface, as confirmed by EDS. The reduction in Ce-content in close proximity to the interface of cerianite yielded a model rationalizing the local precipitation of cerianite. For all three mineral phases, a special orientation relationship was established.
Paternity Testing: A Non‐Linkage Based Marker‐Assisted Selection Scheme for Outbred Forage Species
Authors: Riday Heathcliffe 
Published: February 2011

ABSTRACTIn many major perennial forage species, genomic tools and infrastructure development has advanced enough that their utilization in marker‐assisted selection (MAS) can be cheaply explored. This paper presents a paternity testing MAS in diploid red clover (Trifolium pratense L.). Utilizing individual plant phenotypes, known maternity, and molecular marker‐determined paternity, paternal and maternal breeding values are calculated and selection on both parents is accomplished. Paternity testing MAS is demonstrated in three red clover breeding populations utilizing permutation‐based truncation selection for a biomass‐persistence index trait. Permutation‐based truncation selection is accomplished by ranking parents based on 80% of total progeny per permutation. Parental rankings are then used to select among the remaining 20% of total progeny and average selection gains across all permutations are estimated. Paternity was determined from 11 simple sequence repeats (SSRs) amplified in two polymerase chain reactions (PCRs). Paternity‐based selection gains alone were more than double selection gains based on maternity alone. Inexplicably, the estimated paternal halfsib family additive genetic variance was four to five times greater than the maternal halfsib family additive genetic variance. Paternity testing MAS is implementable in other diploid forage species and allopolyploid forage species with one diploid genome and corresponding genome specific molecular markers.
Genetics of Fertility Restoration in A4‐Based, Diverse Maturing Hybrids of Pigeonpea [Cajanus cajan (L.) Millsp.]
Authors: Saxena K. B. , Sultana R. , Saxena R. K. , Kumar R. V. , Sandhu J. S. , Rathore A. , Kishor P.B. Kavi , Varshney R. K. 
Published: February 2011

ABSTRACTRecently, a breeding technology for hybrid pigeonpea [Cajanus cajan (L.) Millsp.] based on cytoplasmic‐nuclear male sterility (CMS) and partial natural outcrossing was developed at ICRISAT. The limited number of experimental hybrids tested has shown the presence of a considerable amount of hybrid vigor for seed yield. In the present study, one extra‐early‐ (120 d), two early‐ (150 d), and two late‐maturing (180 d) pigeonpea hybrids were studied to generate information on the genetics of fertility restoration of the A4 CMS system. In the extra‐early‐maturing hybrids, pollen fertility was controlled by a single dominant gene, whereas in the early‐ and late‐ maturing hybrids, male fertility was governed by two duplicate dominant genes. It was also observed that hybrids with two dominant genes produced a greater pollen load and expressed greater stability as compared with those carrying a single dominant gene. The information on the inheritance of fertility restoration will help in designing strategies for breeding elite hybrid parents, and it was concluded that for breeding hybrids with stable fertility restoration, the presence of two dominant genes is essential.
Soluble TWEAK and PTX3 in Nondialysis CKD Patients
Authors: Yilmaz Mahmut Ilker , Sonmez Alper , Ortiz Alberto , Saglam Mutlu , Kilic Selim , Eyileten Tayfun , Caglar Kayser , Oguz Yusuf , Vural Abdulgaffar , Çakar Mustafa , Egido Jesus , Altun Battal , Yenicesu Mujdat , Blanco-Colio Luis Miguel , Carrero Juan Jesús 
Published: February 2011

Summary

Background and objectives
Chronic kidney disease (CKD) conveys high mortality rates. Soluble TNF-like weak inducer of apoptosis (sTWEAK) and long pentraxin 3 (PTX3) are predictors of mortality in dialysis patients and determinants of endothelial dysfunction. Now, we hypothesize that both sTWEAK and PTX3 act as biomarkers of cardiovascular outcomes in nondialysis CKD patients.

Design, setting, participants, & measurements
Cross-sectional analysis in which flow-mediated dilation (FMD) and intima-media thickness (IMT) were assessed in 257 nondialysis stage 1 to 5 CKD patients (mean age, 52 ± 12 years; 130 men), together with biochemical measurements and sTWEAK and PTX3 assessments. Patients were followed for cardiovascular outcomes.

Results
PTX3 and IMT increased, whereas FMD and sTWEAK decreased across CKD stages (P < 0.001 for all). Both PTX3 and sTWEAK appeared as strong determinants of FMD in multivariate analysis. The univariate associations of sTWEAK and PTX3 with IMT were dependent on estimated GFR. After a median of 39 months (range, 2 to 43 months), 22 fatal and 57 nonfatal cardiovascular events occurred. In a Cox model excluding PTX3, decreasing sTWEAK concentration was associated with increased risk of cardiovascular events independently of basic confounders (age, gender, estimated GFR, C reactive protein, diabetes, and cardiovascular comorbidity) and FMD. In a model excluding sTWEAK, circulating levels of PTX3 were directly associated with cardiovascular outcomes independently of basic confounders, but this association was lost after adjustment for FMD.

Conclusions
Both PTX3 and sTWEAK levels associated with the endothelial dysfunction observed with progressive kidney failure. Additionally, both biomarkers impacted the predictability of cardiovascular outcomes.
New approaches in layer by layer synthesis of collagen/hydroxyapatite composite materials
Authors: Ilie Andreia , Andronescu Ecaterina , Ficai Denisa , Voicu Georgeta , Ficai Maria , Maganu Maria , Ficai Anton 
Published: February 2011

Abstract
The aim of this work was to increase our understanding of collagen (COLL)/ hydroxyapatite (HA) composite materials; more specifically, we focused on the study of the influence of the precursorconcentrations over the final content of deposited HA. We found that the increase of the precursor concentrations led to better mineralization (on the basis of the content of deposited mineral phase). Regardless of the precursor concentrations, the content of the deposited amount was found to increase with the increase of the number of deposited layers. Quantification of the mineral phase amount was achieved by gravimetric determination. Based on the determined deposition equation the number of layers can be easily determined in order to obtain composite materials with desired content of mineral phase.
Assessment of heavy metals emission from traffic on road surfaces
Authors: Pal Sudip , Wallis Steve , Arthur Scott 
Published: February 2011

Abstract
This study aims to analyse RDS heavy metal concentrations on road deposited sediment (RDS) using Riccarton Campus of Heriot-Watt University, Edinburgh, Scotland as a study site. RDS samples were collected at two transverse positions from different sites over a 4 month period in order to describe the influence of traffic on heavy metal emissions. The heavy metal concentrations of the RDS were determined by strong nitric acid digestion and atomic absorption spectrometry. The mean concentrations for Zn, Cu, Cd, Cr, Ni, Pb and Fe were found to be 213, 57, 1, 16, 15, 118, and 13497 mg kg-1 from samples near to the curb and 211, 79, 2, 15, 9, 35, and 14276 mg kg−1 from samples 1 m from the curb respectively. Furthermore for both positions the highest concentrations for all metals were associated with the finer fraction (<63 µm) and stronger correlations between the metals were found further from the curb than near the curb, indicating that metals accumulating on the road surface further from the curb may likely be from the same source (traffic), while the sources of metals near the curb are more diverse.
Surface properties of yeast cells during heavy metal biosorption
Authors: Kordialik-Bogacka Edyta 
Published: February 2011

Abstract
Properties of metal solution, environmental conditions and the type of biomaterials (microorganism genus, species or even strain) influence the mechanism of metal biosorption and consequently metal adsorption capacity, affinity and specificity. Cell surface properties determine the metal-microorganism interactions to a large extent. In this work the relationship between yeast surface properties and yeast’s ability to bind cadmium, lead and copper was studied. Surface charge and hydrophobicity before and after biosorption were determined using dye retention and solvent partition assays, respectively. There were differences in the surface charge and relative hydrophobicity among different yeast strains. A higher metal adsorption capacity for more negatively charged yeast cells was observed. Biosorption of heavy metals resulted in modifications to the surface charge and hydrophobicity of yeast cells. However, there were not statistically significant changes in the yeast surface charge and hydrophobicity after binding of heavy metals depending on the nature of the metal, initial metal concentration and solution pH.
C12 hydroxyester ethoxylates as nonionic surfactants
Authors: Materna Katarzyna , Tic Wilhelm , Sokołowski Adam , Hreczuch Wiesław 
Published: February 2011

Abstract
A series of ethoxylates of 2,2,4-trimethyl-1,3-pentanediol mono-isobutyrate representing a synthetic C12 hydroxyester hydrophobe was obtained. The solubility parameters, surface tension and critical micelle concentrations for model solutions were investigated. The new surfactants were found to produce extremely low foam levels and a non-standard surface interfacial behavior was determined. It was observed that the ethoxylates of the C12 hydroxyester formed an oriented monolayer at the interface regardless of their average polyaddition degree. Such behavior is different from the surface activities of commonly known linear nonionic surfactants and it indicates self organization of the surfactants at the interface. This feature offers possibility for application of these surfactants in nanotechnology as well as in the conventional cleaning processes.
Mechanochemical synthesis of some europium diketonates
Authors: Zaharieva Joana , Milanova Maria , Todorovsky Dimitar 
Published: February 2011

Abstract
Results on the influence of mechanoactivation (3–30 min) in a planetary ball mill on the composition, crystal structure, IR spectra and morphology of EuCl3·6H2O, dibenzoylmethane (HDBM) and mixtures of EuCl3·6H2O — HDBM and EuCl3·6H2O — HDBM — 1,10-phenathroline (phen) are presented. Mechanoactivation leads to a decrease of interplanar distances of the EuCl3·6H2O and HDBM and partial synthesis of Eu(DBM)3 and Eu(DBM)3·phen in the respective mixtures. The fluorescence properties of the products of activation (excitation and emission spectra, lifetime of the excited states) are similar to those of the complexes produced by the conventional “wet” methods, but the strongest excitation of the mechanochemically produced solid state samples is achieved at higher wavelength. Crystals of different forms (prismatic, needle-, long-length-leaf- and rod-like) are formed by mechanoactivation of the mentioned mixtures.
Innovative protocol for “ex vitro rooting” on olive micropropagation
Authors: Leva Annarita 
Published: February 2011

Abstract
The commercial micropropagation of olive trees is currently limited by the production cost. An ex vitro method for olive microshoot rooting could reduce both the production cost per plant and the propagation time. In this study a successful ex vitro rooting protocol tested on seven olive cultivars is reported. The explants of cv. Maurino were collected from fifth, sixth, and seventh proliferative subcultures carried out on MSM medium, while for the other cultivars the explants were collected from only seventh proliferative subculture. Continuous light during the rooting phase was a prerequisite for the success of the ex vitro protocol. The best source of microshoots for a high rooting percentage was the seventh proliferative subculture. Cvs. Coratina, Maremmano, Maurino, Picholine, and S. Francesco showed high rooting percentages with a range of 62–76%; whereas for cvs. Correggiolo and Frantoio the experimental conditions need to be optimised. Up to 90% of the rooted microplants survived, and continuous growth of shoots was subsequently observed. The proposed protocol can be easily applied to several different olive cultivars to produce microplants by commercial laboratories. The approach makes olive micropropagation in the nursery industry both possible and profitable.