Okufanele Ukubheke Ephanelini Elibomvu Le-LED Ukuze Uvuselele Isikhumba

Uma unesifiso sokwazi ukuthi iphaneli ebomvu ye-LED ingathuthukisa ngempela ukuthungwa kwesikhumba sakho, ithoni, kanye nokubukeka kwaso sonke, awuwedwa. Imakethe igcwele amadivayisi athembisa ukuvuselelwa okumangalisayo, futhi ukuhlukanisa izici ezisekelwe yisayensi ne-hype yokumaketha kubalulekile ukuze uthole imiphumela oyifunayo. Lesi sihloko sikuhambisa ezintweni ezibaluleke kakhulu okufanele uzicabangele lapho ukhetha iphaneli ebomvu ye-LED, ukuze ukwazi ukwenza isinqumo esinolwazi esifanelana nemigomo yesikhumba sakho nezidingo ezingokoqobo.

Kungakhathaliseki ukuthi umusha ekwelashweni kokukhanya noma usukulungele ukuthuthukisa idivayisi yakho ekhona, izigaba ezilandelayo zizochaza imininingwane yobuchwepheshe, ikhwalithi yokwakha, iziqinisekiso zokuphepha, kanye nokusetshenziswa kwansuku zonke. Qhubeka ufunda ukuze ufunde ukuthi yini ebaluleke kakhulu nokuthi ungawubona kanjani umkhiqizo olinganisela ukusebenza kahle, induduzo, kanye nenani lesikhathi eside.

Ubude begagasi namandla okukhipha

Ukukhetha ubude be-wavelength obufanele nokuqonda amandla okukhipha kuyisisekelo sokuthi iphaneli ye-LED ebomvu izoletha ukuvuselelwa kwesikhumba okunenjongo yini. Ukwelashwa ngokukhanya okubomvu kuvame ukusebenzisa ubude be-wavelength kububanzi obubomvu obubonakalayo (cishe ama-nanometer angamakhulu ayisithupha namashumi amabili kuya kwamakhulu ayisithupha namashumi ayisithupha) kanye nama-nanometer aseduze ne-infrared (cishe ama-nanometer angamakhulu ayisishiyagalombili neshumi kuya kwamakhulu ayisishiyagalombili namashumi amahlanu). Lawa mabanga angena ezicutshini ngendlela ehlukile: ubude be-wavelength obubomvu obubonakalayo bumuncwa kakhulu yi-mitochondria nama-chromophores ezingqimbeni zesikhumba ezingaphezulu futhi kungakhuthaza ukukhiqizwa kwe-collagen, kunciphise ukuvuvukala, futhi kusheshise ukuphulukiswa kwamanxeba. Ububanzi be-wavelength obuseduze ne-infrared bufinyelela ezicutshini ezijulile, kuthinte ama-fibroblast kanye nezimpendulo zemithambo yegazi futhi kungaba usizo ekunciphiseni imigqa ejulile, kuthuthukiswe ukuqina, futhi kukhuthaze ukujikeleza kwegazi. Iphaneli esezingeni eliphezulu izokhetha ubude be-wavelength obufanele obusekelwe ezinzuzweni ezihlosiwe noma inikeze inhlanganisela yama-diode abomvu nama-NIR ukuze kuqondiswe ekujuleni kwesikhumba okuningi.

Amandla okukhipha abalulekile ngoba anquma ukuthi isikhumba sakho sithola amandla angakanani ngempela ngesikhathi seseshini. Ukushiswa kokukhanya kuvame ukulinganiswa ngama-milliwatts ngesentimitha lesikwele, futhi idivayisi yasekhaya ewusizo ivame ukuletha amazinga okukhanya okwenza izikhathi zokwelapha zibe wusizo—ziphansi kakhulu futhi izikhathi ziba zinde kakhulu; amandla aphezulu kakhulu ngaphandle kwezinyathelo zokuphepha ezanele angabangela ukushisa okungafuneki. Umthamo wamandla, noma ukushelela, okulinganiswa ngama-joules ngesentimitha lesikwele, kuhlanganisa ukushiswa kokukhanya nesikhathi sokuvezwa futhi yilokho ekugcineni okuqhuba i-photobiomodulation (izimpendulo zamaseli ekukhanyeni). Funa isiqondiso somkhiqizi ngamanani wamandla anconyiwe kanye nobude besikhathi seseshini obuhambisana nezifundo ezibuyekezwe ontanga. Uma inkampani inikeza amagrafu noma amashadi abonisa ukushiswa kokukhanya ebangeni elihlukahlukene, lokho kucaca kuyisibonakaliso esinamandla; ukushiswa kokukhanya kuyawa ngebanga, ngokuvamile ngokushesha, ngakho amaphaneli alungiselelwe ukusondelana kanye nokukhishwa okufanayo aletha imiphumela engcono futhi ehambisanayo.

Enye imininingwane okufanele icatshangelwe ukuthi ngabe iphaneli isebenzisa yini ukuphuma kwegagasi okuqhubekayo noma izindlela ze-pulsed. Ukucindezela ngezinye izikhathi kungavumela amandla aphezulu aphezulu ngenkathi kunciphisa umthwalo wokushisa, futhi ezinye izifundo ziphakamisa ukuthi amaphrothokholi e-pulsed angasebenzisana ngendlela ehlukile nezinqubo zamaselula. Kodwa-ke, ukuhambisana nokuphindaphinda kubalulekile kunezici zesimanje: ukukhipha okuqhubekayo okuthembekile okunobude begagasi obuqinisekisiwe nolwazi lomthamo kuvame ukukhetha kunezimangalo zokumaketha ngaphandle kwedatha. Okokugcina, qaphela imininingwane engacacile njenge-"amandla aphezulu" angenazo izinombolo. Imikhiqizo emihle ibala ubude begagasi obuqondile, ukukhanya okukhanyayo ebangeni elijwayelekile lokusebenza, izikhathi zokwelashwa ezilindelekile zokufinyelela ama-joules anconyiwe ngesentimitha lesikwele, nokuthi umkhiqizo uyaqhubeka noma u-pulsed. Lezi yizilinganiso ezinquma ukuthi iphaneli ye-LED ebomvu inamandla ayisisekelo okukhiqiza ukuvuselelwa kwesikhumba okwelaphayo.

Ikhwalithi ye-LED kanye nokwakhiwa kwamaphaneli

Ikhwalithi yama-LED ngokwawo kanye nokwakhiwa kwephaneli kuthinta kokubili ukusebenza kanye nokuphila isikhathi eside. Ama-diode chips asezingeni eliphezulu aletha umphumela oqhubekayo we-spectral kanye nokukhanya okuzinzile phakathi nezinkulungwane zamahora, kuyilapho ama-LED asezingeni eliphansi angabonisa ukuzulazula okukhulu kobude be-wavelength kanye nokuqina ngokuhamba kwesikhathi. Abakhiqizi be-semiconductor namamodeli e-chip abalulekile: abenzi bamadivayisi abaningi abadumile badalula izinhlobo ze-LED noma okungenani izinhlobo ze-diode abazisebenzisayo, futhi amaphaneli akhiwe ngama-LED aphezulu avame ukubiza kakhulu kodwa futhi ahlala isikhathi eside futhi agcina umkhiqizo wawo wokwelapha. Hlola izilinganiso ezifana nokuphila okulindelekile emahoreni nokuthi inkampani inikeza izinketho zokufaka esikhundleni noma inqubomgomo yesevisi ecacile yokuwohloka kwe-diode.

Ukwakhiwa kwamaphaneli kuhlanganisa ukuphathwa kokushisa, ukwakheka kokukhanya, kanye nokuqina komshini. Izinki zokushisa, amafeni, noma amafin okupholisa angasebenzi asiza ekugcineni ukusebenza kahle kwe-diode kanye nokuphila isikhathi eside; Ama-LED asebenza kahle kakhulu ezindaweni ezilawulwayo zokushisa, futhi ukupholisa okubi kungasheshisa ukwehluleka. Ama-optics—kungakhathaliseki ukuthi amalensi, ama-diffuser, noma inhlanganisela—adlala indima ebalulekile ekuletheni ukukhanya okufanayo endaweni yokwelashwa. Ngaphandle kokusabalalisa okwanele noma amalensi aklanywe kahle, ungathola izindawo ezishisayo kanye nomthamo ongalingani, lapho ezinye izindawo zesikhumba zithola amazinga okwelapha kuyilapho izindawo eziseduze zingaphumeleli. Hlola izithombe zomkhiqizo namashidi emininingwane ukuthola izinkomba: izikhala ezifanayo zama-diodes, ama-diffuser ekhwalithi, kanye ne-chassis eqinile ye-aluminium konke kusikisela ukwakheka okucatshangelwe kahle.

Ukwakheka okubonakalayo nakho kunquma ukuthi ukukhanya kulethwa ngama-engeli afanele. Amanye amaphaneli asebenzisa ama-reflector nama-lens anombala odongeni ukugxila ekukhanyeni, kanti amanye asebenzisa ama-diode e-wide-angle kanye nama-diffuser acacile ukuze andise ukumbozwa okulinganayo. Lobu bunjiniyela bokukhanya bubalulekile ngoba ukuvuselelwa kwesikhumba kuncike ekulinganisweni okuqhubekayo endaweni yokwelashwa. Izindawo zokufaka eziqinile, izintambo eziqinile, kanye ne-electronics evalwe (ikakhulukazi uma idivayisi ingasetshenziswa ezindaweni ezinomswakama njengezindlu zangasese noma ama-spa) nakho kubonisa ikhwalithi yokwakha ephezulu. Cabanga ngezixhumi, ukuthembeka kokunikezwa kwamandla, nokuthi umenzi usebenzisa yini okokufaka okuhlanganisiwe kanye nokuvikelwa kokukhuphuka.

Okokugcina, ukwakhiwa kuthinta ukuphatheka kanye nokubekwa. Amaphaneli enzelwe ukusetshenziswa ekhaya angase abe lula futhi eze nezitendi noma amabhande, kuyilapho amadivayisi asezingeni lomtholampilo ebeka phambili ukuqina kanye nezici zomtholampilo. Amaphaneli amahle azofaka phakathi ukwenza ngokwezifiso okulula ukukusebenzisa—njengezitendi ezilungisekayo, ihadiwe yokulenga, noma izingalo ezihlanganisiwe—ezihlanganiswe nokwakhiwa okuqinile ukuze idivayisi ihlale iphephile futhi izinzile ngesikhathi sokwelashwa. Ukuphila isikhathi eside kanye nokusebenza kuncike kulezi zimfanelo zomzimba, ngakho hlola ikhwalithi ye-LED kanye nokwakhiwa ngokucophelela kunokuthenga kuphela ngentengo noma ukubukeka.

Indawo Yokwelapha kanye Nosayizi Wephaneli

Ubukhulu bephaneli nendawo eliphatha ngqo kuthinta ukuthi idivayisi izoba usizo kangakanani ohlelweni lwakho. Idivayisi encane ephathwayo ingase ibe lula ukwelapha izindawo ezinkulu njengobuso bonke, intamo, noma i-décolletage. Ngakolunye uhlangothi, iphaneli enkulu izomboza isikhumba esiningi ngesikhathi esisodwa, inciphise izikhathi zeseshini futhi inikeze ukumbozwa okuhlala njalo, kodwa kungase kungabi lula ukuyigcina nokuyibeka endaweni yayo. Cabanga ukuthi yiziphi izindawo ofuna ukwelapha ngazo njalo bese ukhetha usayizi wephaneli ohambisana nalezo zidingo, ukhumbula ukuthi ukumbozwa kanye nokulula kuvame ukuba yizinto ezishintshashintshayo.

Ukumbozwa okufanayo kuhlobene ne-geometry yephaneli kanye nesikhala se-diode. Amaphaneli anama-diode amancane ashiya izikhala ezinciphisa umthamo osebenzayo kwezinye izindawo, kanti amaphaneli anobuningi be-diode ephezulu kanye nokusabalala okungcono aqinisekisa ukuthi yonke ingxenye yendawo yokwelashwa ithola umthamo wokwelapha. Ukuze kulungiswe ubuso, amaphaneli anosayizi wokumboza ubuso bonke kanye nentamo engenhla ngesikhathi esisodwa awusizo kakhulu; ekwelashweni komzimba, amaphaneli amakhulu noma ukusetha okuhlanganisiwe okungahlanganiswa kungangcono. Cabanga ngendlela ozobeka ngayo iphaneli maqondana nesikhumba sakho: izikhonkwane ezingenhla, izitendi ezilungisekayo, noma imichilo engenazandla ingenza izikhathi ezinde ziphathwe kahle futhi zihambisane.

Ibanga ukusuka esikhumbeni liyisici esibalulekile. Ukukhanya okulethwa esikhumbeni kwehla ngebanga, ngakho abakhiqizi bavame ukucacisa amabanga okwelashwa afanele lapho ukukhanya okushiwo kusebenza khona. Amaphaneli aklanyelwe ukusebenza amasentimitha ambalwa ukusuka esikhumbeni anganikeza umthamo ophumelelayo kakhulu kanye nezikhathi ezimfushane, kodwa kumele futhi agcine ukusatshalaliswa kokukhanya okulinganayo kulelo banga. Uma uhlose ukusebenzisa iphaneli emabanga amakhulu kancane ukuze uthole induduzo noma ukwelapha izindawo ezinkulu, hlola ukuthi ukukhanya kushintsha kanjani ngebanga—ezinye izinkampani zishicilela ama-curve okubola abonisa ukuqina emazingeni ahlukene. Lawa ma-curve akutshela ukuthi idivayisi ihlala isebenza yini emabanga okusetshenziswa angokoqobo.

Izinto eziwusizo njengokuphatheka kalula, izinketho zokufaka, nokuthi iphaneli lingasetshenziswa yini esimweni sezokwelapha nazo zibalulekile. Amaphaneli aklanyelwe ukusetshenziswa kochwepheshe angaba makhulu futhi afaka izici ezinjengamasondo, ozimele abagoqekayo, noma amayunithi axhumene ukuze ambozwe kahle. Kubasebenzisi basekhaya, funa ibhalansi: iphaneli enikeza ukumbozwa okwanele kobuso nentamo, kulula ukuyibeka njalo, futhi igcina ngaphandle komzamo ongadingekile. Ekugcineni, khetha usayizi wephaneli ngokusekelwe ekutheni ufuna ukwelapha kuphi, ukuthi ufuna ukwelapha kangaki, kanye nokusebenza kahle kokuhlanganisa izikhathi empilweni yansuku zonke ukuze ugcine ukwelashwa okuvamile nokusebenzayo.

Izici Zokuphepha kanye Nezitifiketi

Ukuphepha kufanele kube yinto eza kuqala lapho kuhlolwa noma iyiphi idivayisi ehloselwe ukuletha amandla emzimbeni. Amaphaneli e-LED abomvu asezingeni eliphezulu afaka phakathi izindlela zokuvikela ukuvimbela ukushisa ngokweqile, amaphutha kagesi, kanye nezingozi zamehlo. Ukuvikelwa kokushisa ngokweqile kuvame ukuhilela izinzwa zokushisa ezikhipha noma ezivala idivayisi uma amazinga okushisa angaphakathi enyuka ngaphezu kwemingcele ephephile. Izinsiza zamandla eziklanywe kahle zinokuvikelwa kokukhuphuka kanye nama-fuse agcwele ukuze kuncishiswe ingozi yokwehluleka kukagesi. Uma umenzi enikeza idatha yokusebenza kokushisa noma echaza ukuxhumana kokuphepha okwakhelwe ngaphakathi, lokho kukhanya kusikisela ukuthi inkampani ibeka phambili ukuvikelwa komsebenzisi kanye nobuqotho bedivayisi besikhathi eside.

Ukuphepha kwamehlo kuvame ukungaqondwa kahle: ukukhanya okubomvu nokuseduze kwe-infrared kungaba yinto engakhululekile noma engaba yingozi ku-retina uma kuvezwa isikhathi eside, eduze, ikakhulukazi kumadivayisi anamandla aphezulu noma asebenzisa i-pulsed. Amanye amaphaneli afaka izibuko noma ancoma izibuko zokuvikela amehlo, kanti amanye athembele ebangeni nasekuqondisweni ukuze anciphise ingozi. Funa isiqondiso esicacile esivela kumenzi mayelana nokuvikelwa kwamehlo, amabanga anconyiwe, kanye nezindlela zokuvimbela ukusetshenziswa eduze kwamehlo. Amadivayisi asetshenziswa ezindaweni zobungcweti angafaka izihlangu noma imishayo elungisekayo ukuze kuncishiswe ukuvezwa kwamehlo ngqo.

Izitifiketi kanye nemvume yokulawula inikeza ukuqinisekiswa okuzimele kwekhwalithi yokuphepha kanye nokukhiqiza. Funa izimpawu eziqashelwayo ezifana ne-UL noma i-ETL yokuphepha kukagesi, i-CE yokuhambisana ne-European, i-RoHS yezinto ezinobungozi ezinqunyelwe, kanye nanoma yikuphi ukuvunyelwa kwe-FDA noma uhlu lwe-510(k) olufanele izimangalo zokwelapha. Ukuvunyelwa kwe-FDA kubaluleke kakhulu e-US lapho idivayisi imakethwa ukusetshenziswa kwezokwelapha noma ukwelashwa okuthile; noma kunjalo, akuwona wonke amaphaneli abathengi afuna ukuvunyelwa kwe-FDA, futhi ukungabikho kwalokho akusho ukuthi ingozi iyingozi ngokuzenzakalelayo. Esikhundleni salokho, linganisa izitifiketi kanye nezinye izici ezifana nemibhalo eqinile, ukuhlolwa kwelebhu yomuntu wesithathu, kanye nezinkomba zesifundo somtholampilo.

Ukucaca komkhiqizi mayelana nokuhlolwa kubalulekile: izilinganiso zokukhanya ezivela eceleni, amaphrofayili okushisa, kanye nokukhishwa kwe-electromagnetic, kanye nokuhlolwa kokuthembeka kwesikhathi eside, kuyaqinisekisa. Futhi qinisekisa iziqinisekiso kanye nokusekelwa kwamakhasimende—izinkampani ezisekela imikhiqizo yazo ngeziqinisekiso eziqinile, izinqubomgomo zokubuyisa ezicacile, kanye nensizakalo yamakhasimende efinyelelekayo ngokuvamile zinomthwalo wemfanelo omkhulu. Okokugcina, bheka izithiyo zokuphikisana kanye nesiqondiso sokuphepha: abantu abakhulelwe, abathatha imithi ethinta ukukhanya, noma abanezimo ezithile zezokwelapha kufanele baxhumane nochwepheshe wezempilo ngaphambi kokusebenzisa ukwelashwa kokukhanya. Izici zokuphepha kanye nezitifiketi ezithembekile, kuhlanganiswe nemiyalelo ecacile yokusebenzisa, kunciphisa ubungozi futhi kusize ukuqinisekisa ulwazi lokwelashwa olusebenzayo nolungenakukhathazeka.

Ukulula Kokusebenzisa kanye Nokucabangela Okusebenzayo

Ngisho nephaneli esebenza kahle ngokwezokwelapha ingasetshenziswa kancane uma kunzima ukuyisebenzisa noma ukuyinakekela. Ukulula kokusebenzisa kuhlanganisa izilawuli ezinembile, izinhlelo ezihleliwe, izibali zeseshini, kanye nezinketho zokufaka noma zokubeka ezivumela ukwelashwa okuqhubekayo. Amadivayisi anobungani bomsebenzisi avame ukufaka izixhumi ezilula ezinezinkomba ezicacile zamandla, ubukhali, kanye nenqubekela phambili yeseshini. Izindlela ezilungiselelwe kusengaphambili zokwelapha ubuso noma umzimba, noma ikhono lokugcina izilungiselelo ezenziwe ngokwezifiso, kwenza kube lula ukunamathela ezinqumweni ezinconywayo ngaphandle kokubala okuyinkimbinkimbi. Izibali zesikhathi ezimisa iseshini ngokuzenzakalelayo uma umthamo wamandla onconywayo usufinyelelwe zivimbela ukwelashwa ngokweqile noma okunganele, okuwusizo kakhulu kubasebenzisi basekhaya.

Ukuhlanza nokulungisa kuyizinto ezibalulekile kodwa ezibalulekile. Amaphaneli asetshenziswa esikhumbeni esingenalutho noma ezindaweni ezihlanganyelwe kufanele abe nezindawo ezilula ukuzisula ngezibulala-magciwane ezifanele ngaphandle kokulimaza i-optics noma i-electronics. Izembozo ezisuswayo nezihlanzwayo, i-circuitry evaliwe, nezinto ezingagqwali konke kuthuthukisa ukusetshenziswa kwesikhathi eside. Uma idivayisi isebenzisa izingxenye ezingashintshwa njengezi-diffuser noma amalensi, hlola ukutholakala kanye nezindleko zezipele. Isheduli yokulungisa ecacile kanye nemiyalelo eqondile yandisa isikhathi sokuphila kwephaneli futhi igcine ukusebenza kahle.

Cabanga ngendlela idivayisi ehlangana ngayo nomkhuba wakho wansuku zonke. Amaphaneli adinga indawo engahlelekile, izikhathi zokusetha ezinde, noma ukuhlanganiswa okuyinkimbinkimbi cishe awakwazi ukusetshenziswa njalo. Izinketho ezingenazandla njengezitendi, amabhande, noma izingalo ezilungisekayo zenza kube lula ukuphumula ngesikhathi seseshini, ukwenza imisebenzi eminingi, noma ukugcina isimiso esijwayelekile. Ukuphatheka kahle kubalulekile uma uhamba noma unesitoreji esilinganiselwe. Isisindo, ubukhulu, nokuthi idivayisi iyaphuka yini ukuze ithuthwe ngaphandle kokufaka engcupheni kuzothinta ukuthi ifanelana nendlela yakho yokuphila.

Ukusekelwa kwamakhasimende kanye newaranti kuyingxenye yenzuzo engokoqobo. Abakhiqizi abahle banikeza isevisi yamakhasimende ephendulayo, izinsiza zokuxazulula izinkinga ezicacile, kanye nemigomo yewaranti efanele emboza amaphutha kanye nokuguguleka okufanele. Ukubuyekezwa kwabasebenzisi kanye nempendulo yomphakathi kungakhanyisa okuhlangenwe nakho kwangempela ngokuthembeka, isevisi yangemva kokuthengisa, nokuthi ngabe idivayisi isebenza njengoba ikhangisiwe. Okokugcina, cabanga ngezindleko eziphelele zobunikazi: iphaneli engabizi edinga ukulungiswa njalo noma ehluleka kusenesikhathi ingase ibize kakhulu ngokuhamba kwesikhathi kunenketho ebiza kancane, eyakhiwe kangcono. Kala intengo yokuqala ngokuqhathanisa nezici, isikhathi sokuphila esilindelekile, ukwesekwa, nokuthi ngabe idivayisi inikeza izinzuzo ezibonakalayo ezihambisana nobufakazi bezokwelapha kanye nezidingo zakho zomuntu siqu.

Ngamafuphi, ukukhetha iphaneli ye-LED ebomvu yokuvuselela isikhumba kudinga ukunakwa ezintweni eziningana ezixhumene. Ubude bamagagasi namandla okukhipha kunquma imiphumela yezinto eziphilayo kanye nezikhathi zokwelapha ezisebenzayo. Ikhwalithi ye-LED kanye nokwakhiwa kwephaneli kuthinta ukuzinza kokusebenza kanye nokuphila isikhathi eside, kuyilapho usayizi wephaneli kanye nendawo yokwelapha kuthinta ukulula kanye nokumbozwa. Izici zokuphepha, izitifiketi, kanye nokucaca komkhiqizi kuvikela izingozi futhi kuqinisekisa ukuhambisana nemithetho. Okokugcina, ukulula kokusebenzisa, ukugcinwa, kanye nokusekelwa kunquma ukuthi uzoyisebenzisa yini idivayisi njalo ngokwanele ukuze ubone imiphumela. Ukulinganisela lezi zinto—kuhlanganiswe nokulindela okungokoqobo mayelana nezikhathi nemiphumela—kuveza ithuba elihle kakhulu lokuthola ukuvuselelwa kwesikhumba okunenjongo.

Uma ususa amaphuzu amabili kulesi sihloko, mawabe yilawa: okokuqala, beka phambili amadivayisi anikeza imininingwane ecacile yobuchwepheshe kanye nesiqondiso sokulinganisa esisekelwa ubufakazi; okwesibili, cabanga ngendlela iphaneli elizofanelana ngayo nendlela yakho yokuphila kanye nezidingo zokuphepha ukuze ukwazi ukugcina ukwelashwa okuvamile nokusebenzayo. Ukuhlola okucatshangelwe kusengaphambili konga isikhathi nemali futhi kwandisa amathuba okuthi utshalomali lwakho luzohlinzeka ngezinzuzo zangempela nezihlala njalo esikhumbeni sakho.