Jalousie window sustainable living. A commonly accepted advantage of jalousie windows is their ability to be left part way open in heavy rains as a way to maintain desirable ventilation, whether a sunshower or prolonged tropical storm. An experiment in 1960 tested the efficacy of jalousie windows in tropical climates to exclude rain while still allowing for air flow. A major issue with excluding rain while allowing air flow is that both tend to come from the same direction. The angled slatted jalousie windows give the impression of solving this issue, however, the actual efficacy of the windows to let in air
Types of membership of Opus Dei for the contributions that they may have made to Opus Dei during their time in the organisation, this applies to all categories of membership. When, however, someone leaves the prelature unlawfully (i.e. without the permission of the Prelate) he or she commits mortal sin. Nevertheless, the Congregation for Bishops states: "The laity incorporated in the Prelature Opus Dei continue to be faithful of the dioceses in which they have their domicile or quasidomicile and are, therefore, under the jurisdiction of the diocesan bishop in what the law lays down for all the ordinary faithful". Types of membership of Opus Dei