This reaction allows for new olefins to be synthesized and used as raw materials in polymers, perfumes, drugs and agrochemical industrial products, also serving as the starting point for more complex organic molecules. Catalytic systems are based mainly on the metals W, Mo, Re and Ru. The metal-alkylidenes synthesized by Schrock, [Mo(CHR)(NAr)(OR f ) 2 ], Grubbs, [Ru(CHR)(PCy 3 ) 2 Cl 2 ], Herr...

In this article we study the problem of fair division. In particular we study a notion introduced by J. Barbanel that generalizes super envy-free fair division. We give a new proof of his result. Our approach allows us to give an explicit bound for this kind of fair division. Furthermore, we also give a theoretical answer to an open problem posed by Barbanel in 1996. Roughly speaking, this ques...

Introduction: In America, it is common knowledge that smoking cigarettes is bad for one’s health; however, it is less well known that secondhand smoke exposure can affect the neurological health of children. According to the Centers for Disease Control and Prevention, in the U.S. 1 in 5 children are at greater risk for mental health problems due to postnatal ETS exposure (Centers for Disease Co...

Methods The clinically more affected wrist of 88 JIA patients was studied with CR according to adapted Sharp/van der Heijde score (SHS) method and MRI by using the OMERACT RA-MRI-score, coupled with standard clinical assessment. One-year CR follow-up was available in 65 patients, whereas one-year MRI follow-up was available in 51 patients. Serum CTX-I, C1-2C, C2C were measured by ELISA assays i...

This study aims to investigate the relationship between subjective happiness and autobiographical memories having a controlled emotional state from three aspects: high ratio of positive emotional memories; intensity of positive emotions; and differences in expression or transmission of the experienced events. The participants were 186 Japanese undergraduates who were administered the Japanese v...

Public health interventions are directed to influence the (state of a) risk factor, either by behavioral or environmental changes. Therefore, environmental health risk assessments are highly relevant for public health decision making and policy development. The credibility of an environmental health risk assessment depends, to a large extent, on the strength of the scientific evidence on which ...

Introduction Supported rhenium oxide catalysts have a wide range of catalytic applications, such as olefin metathesis, hydrodesulfurization, hydrogenation and NH3-SCR. Hence, the practical importance of rhenium oxide catalysts has resulted in extensive investigation of the surface structure of supported rhenium oxide catalysts. The molecular structure of supported rhenium oxides has been mainly...

is concerned with the development of health systems based on primary health care. Its support to countries is organized through three sub-programmes, reflecting the different levels and approaches necessary in implementing an integrated primary health care strategy. The sub-prograrnmes are: National Health Systems and Policies; The Current Concerns series is intended to give a wider audience to...