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Systematic analysis of the intravoxel incoherent motion threshold separating perfusion and diffusion effects: Proposal of a standardized algorithm
To systematically evaluate the dependence of intravoxel-incoherent-motion (IVIM) parameters on the b-value threshold separating the perfusion and diffusion compartment, and to implement and test an algorithm for the standardized computation of this threshold. Diffusion weighted images of the upper abdomen were acquired at 3 Tesla in eleven healthy male volunteers with 10 different b-values and ...


Foreign Institutional Investors and Corporate Governance in Emerging Markets: Evidence of a Split-Share Structure Reform in China
Using data on China’s split-share structure reform that floats non-tradable shares, we find that Qualified Foreign Institutional Investors (QFIIs) have greater influence over the controlling state shareholders than local mutual funds. QFIIs are less prone to political pressure and are more likely to participate in arm’s-length negotiation and monitoring in state-controlled companies. The pr...
Cross-Listing, Firm-Specific Information, and Corporate Governance: Evidence from Chinese A-Shares and H-Shares
We examine the impact of cross-listing on firm-specific information utilizing the unique features of the Chinese capital markets. By separating the trading activity of domestic Chinese investors from that of foreign non-Chinese investors, we are able to isolate each investor group’s relative ability to impound firm-specific information into stock prices. We show that the cross-listed H-shares...


In the Name of Charity: Political Connections and Strategic Corporate Social Responsibility in a Transition Economy
This study investigates whether firms in China use corporate social responsibility (CSR) to build political networks and, if so, how such CSR decisions affect firm performance. We bypass the empirical difficulty of measuring the value of political networks by using an event study approach. Specifically, we examine how abrupt termination of existing political connections caused by replacement of...
Evaluation of vinyl laurate in a battery of in vitro and in vivo tests for genotoxicity
Vinyl laurate is a potential residual monomer in chewing gum base formulated with polyvinyl acetate vinyl laurate copolymer (PVAcVL). The genotoxic potential of vinyl laurate was examined in a battery of in vitro and in vivo genotoxicity tests. Vinyl laurate was not mutagenic in Ames tests. In addition, it was not mutagenic in the HPRT mutation assay in L5178Y cells. An in vitro mammalian chrom...


Safety Evaluation of Se-methylselenocysteine as Nutritional Selenium Supplement: Acute Toxicity, Genotoxicity and Subchronic Toxicity
The significant toxicity of selenium emphasizes the need to assess the health risk of various selenocompounds as nutritional supplements. Se-methylselenocysteine (SeMC) was recently reported to be more bioactive but the toxicological effects have not been sufficiently characterized. This study aimed to evaluate the safety of SeMC and provide the Acceptable Daily Intake (ADI) for its use in huma...
Dynamics and Control of Infections on Networks
Random mixing in host populations has been a convenient simplifyingassumption in the study of epidemics, but neglects important differences incontact rates within and between population groups. For HIV/AIDS, theassumption of random mixing is inappropriate for epidemics that areconcentrated in groups of people at high risk, including female sex workers(FSW) and their male clients (MCF), injectio...

Personality cannot be predicted from the power of resting state EEG
In the present study we asked whether it is possible to decode personalitytraits from resting state EEG data. EEG was recorded from a large sample ofsubjects (N = 309) who had answered questionnaires measuring personality traitscores of the 5 dimensions as well as the 10 subordinate aspects of the BigFive. Machine learning algorithms were used to build a classifier to predicteach personality tr...
The Potential Impact of Increased Hospital Capacity to Contain and Control Ebola in Liberia
West Africa is currently experiencing a severe outbreak of Ebola virusdisease (EVD). As part of the international effort to address this outbreak,the United States has committed to building specialized Ebola treatmentfacilities with 1700 beds. However, the effectiveness of this increase in theavailable healthcare facilities to treat Ebola is unclear, especially in lightof the rapidly increasing...

Strontium content and collagen-I coating of Magnesium–Zirconia–Strontium implants influence osteogenesis and bone resorption
Our objective was to study the role of Collagen type-I (Col-I) coating on Magnesium–Zirconia (Mg–Zr) alloys, containing different quantities of Strontium (Sr), in enhancing the in vitro bioactivity and in vivo bone-forming and mineralisation properties of the implants. MC3T3-E1 osteoblast cell line was used to analyse the in vitro properties of Col-I coated and uncoated alloys. Cell viabili...
Outcomes in Emerging Adulthood for Maltreated Youth: A Clinical-Developmental Approach
The articles in this issue extend the study of child maltreatment to the years of emerging adulthood. This commentary examines their contributions through the lens of two prominent clinical-developmental frameworks: developmental psychopathology and positive youth development. The concepts of cumulative risk and resilience, both central to developmental psychopathology, are enriched by the find...

Ecología y Evolución de las Interacciones Bióticas
El estudio de las interacciones bióticas ha sido uno de los temas de investigación que más evidencias ha aportado a la teoría de la evolución de las especies. Por supuesto, la relevancia de las interacciones bióticas fue puesta de manifiesto por el infalible Charles Darwin, quien en muchos de sus escritos describió e intuyó que la forma en la que las especies entraban en contacto impon...
Volatile leaf and fruit oils of Pimenta guatemalensis (Myrtaceae) from Costa Rica
Volatile leaf and fruit oils of Pimenta guatemalensis (Myrtaceae) from Costa Rica Carlos Chaverri & José F. CiccióEscuela de Química and Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, 11501-2060, Costa Rica; jfciccio@gmail.com; carloschaverri@yahoo.com
Acute toxicity and sublethal effects of the mixture glyphosate (Roundup® Active) and Cosmo-Flux®411F to anuran embryos and tadpoles of four
Glyphosate is the most widely used herbicide in the world with application in agriculture, forestry, industrial weed control, garden and aquatic environments. However, its use is highly controversial for the possible impact on not-target organisms, such as amphibians, which are vanishing at an alarming and rapid rate. Due to the high solubility in water and ionic nature, the glyphosate requires...
Water absorption and dormancy-breaking requirements of physically dormant seeds of Sophora tomentosa L. and Erythrina speciosa Andr. (Fabaceae-Faboideae)
Water absorption and dormancy-breaking requirements of physically dormant seeds of Sophora tomentosa L. and Erythrina speciosa Andr. (Fabaceae-Faboideae)Carolina Maria Luzia Delgado1, Alexandre Souza de Paula2, Marisa Santos3 and Maria Terezinha Silveira Paulilo4 1-Departamento de Botânica, Universidade Federal de Santa Catarina, Florianópolis, 88040-900, Brazil; delgado_carol@yahoo.com.br2-...