The University of Cambridge researchers who examined owl feathers found that feathers were made up of microscopic coverings and a porous elastic fringe on the trailing edge that scatters sound without having adverse impacts on aerodynamics.
They copied the structure on 3D-printed plastic and tested it on a wind turbine in a wind tunnel. The researchers were able to register significantly reduced noise levels. They believe it could be applied to aircraft propellers or even computer fans to muffle noise.
Dawa ya Uchafu Ukeni Kwa kawaida mwanamke hutokwa na majimaji mepesi (vaginal fluids) yenye rangi nyeupe au ya njano. Inapotokea anatokwa na majimaji yenye ute mzito wenye rangi nyeupe au kahawia na yanatoa harufu kali na muwasho, hiyo huwa ni ishara ya ugonjwa uitwao wa kutokwa uchafu ukeni ujulikanao kwa kitaalamu kama ‘Vaginosis’. Mwanamke mwenye tatizo hili hujisikia vibaya na anaweza akaacha kushiriki tendo la ndoa ama kwa kuhofia maumivu au kwa kuona aibu kwani mwanaume ni vigumu kuvumilia harufu hiyo au hata kuuona tu huo ute ute kwani humjengea hisia kwamba mwenza wake atakuwa na magonjwa ya zinaa au si mwaminifu kwa ujumla. Kinachosababisha kutokwa na uchafu ukeni: • Kuwa na wapenzi wengi • Baadhi ya dawa za uzazi wa mpango • Kusafisha uke kwa kutumia dawa zenye kemikali • Uchafu • Uvutaji sigara • Pombe • Maambukizi ya Bakteria au bakteria wabaya wanapozidi ukeni Dalili: • Kutokwa na uchafu usio wa kawaida • Kutokwa na uchafu wenye harufu kali kama s
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