Different Ni-based oxygen carriers were prepared by dry impregnation using -Al2O3 as support. The reactivity, selectivity during methane combustion, attrition rate and agglomeration behaviour of the oxygen carriers were measured and analyzed in a termogravimetric analyzer and in a batch fluidized bed during multicycle reductionoxidation tests. * Manuscript

Genocide studies is simultaneously an emerging and accepted category of scholarly inquiry. The field is robust and at a critical turning point as more disciplines engage the subject. This article identifies two areas within the field that suggest the need for further scholarly attention. First, it urges a renewed attention to the processional nature of genocide and the implications that flow fr...

Doctoral student attrition is a troubling and costly phenomenon. Alarmingly, 40-60% of doctoral students will not complete their Ph.D. Several explanations for this high and persistent attrition rate have been discussed in the extant literature, including questioning the quality, mental health, and motivation of doctoral students. However, stricter admission standards and empirical evidence pro...

In an important investigation of the longitudinal relation between marital adjustment and depressive symptoms, L. A. Kurdek (1998) reported an apparent failure to replicate prior findings reported by F. D. Fincham, S. R. H. Beach, G. T. Harold, and L. N. Osborne (1997). He attributed the diverging results to differences between the analytic approach taken in each of the studies. The authors rea...

Previous work shows that reputation results may fail in repeated games with long-run players with equal discount factors. We restrict attention to stage games where two players, with equal discount factors, move sequentially. A pure Stackelberg action is assumed to exist. One and two sided reputation results are provided. If one of the players is a Stackelberg type with positive probability, th...

Acknowledgements: We thank seminar participants at the Federal Reserve Bank of Chicago for helpful comments. 2 Abstract: This study presents evidence that the correlation in brothers' earnings has risen in recent decades. We use two distinct cohorts of young men from the National Longitudinal Surveys and estimate that the correlation in earnings between brothers rose from 0.26 to 0.45. This sug...

Treatment Evaluation with Multiple Outcome Periods under Endogeneity and Attrition This paper develops a nonparametric methodology for treatment evaluation with multiple outcome periods under treatment endogeneity and missing outcomes. We use instrumental variables, pre-treatment characteristics, and short-term (or intermediate) outcomes to identify the average treatment effect on the outcomes ...

Aims There is lack of consensus over what sample size should be used for pilot trials to inform the design of definitive randomised controlled trials. The majority of the existing recommendations focus on estimating the variation of a continuous outcome and relatively little attention is paid to binary outcomes. The aim of this research was to investigate the sample size required to precisely e...

College academic success and retention have traditionally been predicted using demographic and academic variables. This study moved beyond traditional predictors. A survey of 218 undergraduate students from a private Midwestern university revealed that emotional and social factors (e.g., stress, frequency of alcohol consumption) related to GPA and emotional factors (e.g., self-esteem, fatigue) ...