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amcangyfrifir y bydd y costau gwresogi ac awyru rhwng 30 a 50 y cant o'r rhai a geir mewn adeiladau mwy confensiynol
heating and ventilation costs are estimated to be between 30 and 50 per cent of those of more conventional buildings
byddai gwahardd yr ysmygwr rhag bod unrhyw le yn agos at y bar yn ymdrin hefyd , i ryw raddau , â phroblem cyflogeion , fel y byddai system awyru
banning the smoker from being anywhere near the bar would also address , to some degree , the problem of employees , as would ventilation
canolbwyntiodd prif feysydd ein gwaith ar ba un a oes tystiolaeth i brofi bod mwg tybaco amgylcheddol yn niweidiol i iechyd , effeithiolrwydd systemau awyru ac echdynnu a sut y byddai unrhyw waharddiad yn effeithio ar yr economi
the main areas of our work focused on whether there is evidence to prove that environmental tobacco smoke is damaging to health , the effectiveness of ventilation and extraction , and on how any ban would impact on the economy
archwiliwyd pa un a fyddai system awyru yn ddigon i gael gwared ar yr elfennau a all niweidio person nad yw'n ysmygu , er enghraifft , mewn tafarnau a chlybiau
we did examine whether ventilation equipment would be sufficient to remove the elements that can damage a non-smoker in , for example , pubs and clubs
ar ôl dod i'r casgliad bod tystiolaeth rymus o niwed i iechyd , bu inni ystyried pa un a allai systemau echdynnu ac awyru ddiddymu'r risg mewn mannau amgaeedig
having concluded that there is powerful evidence of damage to health , we considered whether extraction and ventilation could eliminate the risk in enclosed places
collir tua 40 y cant o wres drwy waliau sydd heb eu hinsiwleiddio , collir 20 y cant drwy awyru , a chollir 20 y cant ar ben hynny drwy ffenestri sydd wedi'u hinsiwleiddio'n wael
some 40 per cent of heat is lost through uninsulated walls , 20 per cent is lost through ventilation , and a further 20 per cent is lost through poorly insulated windows
erys y risg ar ôl awyru , oherwydd mae'r mân ronynnau sy'n achosi canser yn aros , ac yn treiddio i'n hysgyfaint oherwydd eu maint eithriadol o fach
the risk remains after ventilation , because the minute cancer-causing particles remain , and those get right down into our lungs because of their extremely small size
barn cymdeithas meddygol prydain , a rennir gan gyrff iechyd cyhoeddus eraill , yw nad yw systemau awyru yn cael gwared â'r mân sylwedd gronynnol sy'n treiddio i'r ysgyfaint a'r thoracs
the british medical association's view , which is shared by other public health bodies , is that ventilation does not remove the fine particulate matter that penetrates the lungs and thorax