Kutheni Ufanele Ucinge NgeMagnesium Kwisiqhelo Sakho Kwaye Nantsi Into Omele Uyazi?

Ezinye zezona zibonelelo zixhaphakileyo ze-magnesium ziquka:

•Inciphisa ukuqaqamba kwemilenze
•Inceda ukuphumla nokuzola
•Inceda ekulaleni
•Ukuthintela ukudumba
•Nciphisa ukuqaqamba kwemisipha
•Ibhalansi yeswekile egazini
•Yi-electrolyte ebalulekileyo egcina isigqi sentliziyo
•Gcina impilo yamathambo: I-Magnesium isebenza ne-calcium ukuxhasa ukusebenza kwamathambo nezihlunu.
•Ibandakanyeka kwimveliso yamandla (ATP): I-Magnesium ibalulekile ekuveliseni amandla, kwaye ukunqongophala kwe-magnesium kunokukwenza uzive udiniwe.

Nangona kunjalo, kukho isizathu sokwenene sokuba i-magnesium ibalulekile: I-magnesium ikhuthaza impilo yentliziyo kunye nemithambo yegazi. Umsebenzi obalulekileyo we-magnesium kukuxhasa imithambo yegazi, ngakumbi i-inside lining yayo, ebizwa ngokuba yi-endothelial layer. I-magnesium iyimfuneko ukuvelisa iikhompawundi ezithile ezigcina imithambo yegazi ikwithoni ethile. I-magnesium yi-vasodilator enamandla, enceda ezinye iikhompawundi zigcine imithambo yegazi ithambile ukuze ingabi lukhuni. I-magnesium ikwasebenza nezinye iikhompawundi ukuthintela ukwakheka kweeplatelet ukuze kuthintelwe ukuqhekeka kwegazi, okanye ukuqhekeka kwegazi. Ekubeni unobangela wokuqala wokufa kwihlabathi liphela sisifo sentliziyo, kubalulekile ukufunda okungakumbi nge-magnesium.

I-FDA ivumela eli bango lezempilo lilandelayo: "Ukutya ukutya okune-magnesium eyaneleyo kunokunciphisa umngcipheko woxinzelelo lwegazi oluphezulu. Nangona kunjalo, i-FDA igqiba ngelithi: Ubungqina abungqinelani kwaye abunasiphelo." Kufuneka batsho oku kuba kukho izinto ezininzi ezibandakanyekayo.

Ukutya okunempilo nako kubalulekile. Ukuba utya ukutya okungenampilo, okufana nokutya okutyebileyo kwiicarbohydrate, ukuthatha i-magnesium yodwa akuyi kuba nampembelelo ingako. Ngoko ke kunzima ukubona unobangela kunye nesiphumo kwisondlo xa kufikwa kwezinye izinto ezininzi, ingakumbi ukutya, kodwa ingongoma kukuba, siyazi ukuba i-magnesium inempembelelo enkulu kwinkqubo yethu yentliziyo.

I-Magnesiumyenye yezona zinto zibalulekileyo emzimbeni womntu kwaye yeyona cation yesibini ibalulekileyo kwiiseli zomntu. I-magnesium kunye ne-calcium zigcina uxinano lwamathambo, imisebenzi yokuxinana kwemithambo-luvo kunye nemisipha. Uninzi lwezidlo zemihla ngemihla zityebile kwi-calcium, kodwa azinawo i-magnesium. Ubisi, umzekelo, lulona mthombo uphambili we-calcium, kodwa alunakubonelela nge-magnesium eyaneleyo. I-magnesium yinxalenye ebalulekileyo ye-chlorophyll, enika izityalo umbala wazo oluhlaza, kwaye ifumaneka kwimifuno eluhlaza. Nangona kunjalo, yinxalenye encinci kakhulu ye-magnesium kwizityalo ekwimo ye-chlorophyll.

I-Magnesium idlala indima ebalulekileyo kwimisebenzi yobomi bomntu. Isizathu sokuba abantu bahlale bephila sixhomekeke kuthotho lweempendulo ezintsonkothileyo ze-biochemical emzimbeni womntu ukuze kugcinwe imisebenzi yobomi. Ezi mpendulo ze-biochemical zifuna ii-enzymes ezingenakubalwa ukuze zisebenze. Izazinzulu zamanye amazwe zifumanise ukuba i-magnesium inokuvula iinkqubo zee-enzyme ezingama-325. I-Magnesium, kunye ne-vitamin B1 kunye ne-vitamin B6, ithatha inxaxheba kwimisebenzi yee-enzymes ezahlukeneyo emzimbeni womntu. Ke ngoko, kufanelekile ukubiza i-magnesium njengomqalisi wemisebenzi yobomi.

I-Magnesium ayinakukwazi nje kuphela ukwenza imisebenzi yee-enzymes ezahlukeneyo emzimbeni, kodwa ikwalawula ukusebenza kwemithambo-luvo, igcine uzinzo lwezakhiwo ze-nucleic acid, ithathe inxaxheba ekuqulunqweni kweproteni, ilawule ubushushu bomzimba, kwaye inokuchaphazela iimvakalelo zabantu. Ke ngoko, i-magnesium ithatha inxaxheba phantse kuzo zonke iinkqubo ze-metabolic zomzimba womntu. Nangona i-magnesium ilandela i-potassium kuphela kumxholo wangaphakathi kweseli, ichaphazela "iindlela" apho i-potassium, i-sodium, kunye ne-calcium ions zidluliselwa ngaphakathi nangaphandle kweeseli, kwaye idlala indima ekugcineni amandla e-membrane yebhayoloji. Ukungabikho kwe-magnesium kuya kubangela ingozi kwimpilo yabantu.

I-magnesium ikwabalulekile ekuvelisweni kweproteni kwaye ikwabaluleke kakhulu ekuvelisweni kweehomoni emzimbeni womntu. Ingadlala indima ekuvelisweni kweehomoni okanye ii-prostaglandins. Ukunqongophala kwe-magnesium kunokubangela i-dysmenorrhea ngokulula, into eqhelekileyo phakathi kwabasetyhini. Kwiminyaka edlulileyo, iingcali bezineembono ezahlukeneyo, kodwa idatha yophando lwamva nje lwangaphandle ibonisa ukuba

I-Dysmenorrhea inxulumene nokunqongophala kwe-magnesium emzimbeni. Ama-45% ezigulana ezine-dysmenorrhea zinamanqanaba e-magnesium aphantsi kakhulu kunesiqhelo, okanye angaphantsi komndilili. Kuba ukunqongophala kwe-magnesium kunokwenza abantu baxinezeleke ngokweemvakalelo kwaye konyuse ukukhutshwa kwee-hormone zoxinzelelo, okukhokelela ekwandeni kwe-dysmenorrhea. Ke ngoko, i-magnesium inceda ekunciphiseni iintlungu zokuya exesheni.

Umthamo we-magnesium emzimbeni womntu ungaphantsi kakhulu kunowe-calcium nezinye izondlo. Nangona ubungakanani bayo buncinci, akuthethi ukuba inefuthe elincinci. Isifo sentliziyo sinxulumene kakhulu nokunqongophala kwe-magnesium: izigulana ezifa ngenxa yesifo sentliziyo zinezinga eliphantsi kakhulu le-magnesium ezintliziyweni zazo. Ubungqina obuninzi bubonisa ukuba unobangela wesifo sentliziyo asikuko ukubetheka kwemithambo yegazi yentliziyo, kodwa kukuxinana kwemithambo yegazi yentliziyo okubangela i-hypoxia yentliziyo. Amayeza anamhlanje aqinisekisile ukuba i-magnesium idlala indima ebalulekileyo ekulawuleni umsebenzi wentliziyo. Ngokuthintela i-myocardium, yenza buthathaka isigqi sentliziyo kunye nokuhanjiswa kwe-excitation, okuluncedo ekuphumleni nasekuphumleni kwentliziyo.

Ukuba umzimba awunayo i-magnesium eyaneleyo, iya kubangela ukuxinana kwemithambo yegazi enika igazi kunye neoksijini entliziyweni, nto leyo enokubangela ukuba intliziyo ibambeke ngequbuliso kwaye ibulale. Ukongeza, i-magnesium ikwanomphumo omhle kakhulu wokukhusela kwinkqubo yentliziyo. Inokunciphisa umxholo we-cholesterol egazini, ithintele i-arteriosclerosis, yandise imithambo yegazi yentliziyo, kwaye yonyuse ukuhanjiswa kwegazi kwi-myocardium. I-magnesium ikhusela intliziyo ekonakaleni xa ukuhanjiswa kwegazi kwayo kuvaliwe, ngaloo ndlela inciphisa ukufa ngenxa yokuhlaselwa yintliziyo. Ngaphezu koko, izazinzulu zifumanise ukuba i-magnesium inokuthintela ukonakala kwenkqubo yentliziyo evela kumayeza okanye izinto ezinobungozi kokusingqongileyo kwaye iphucule isiphumo sokulwa netyhefu kwinkqubo yentliziyo.

I-Magnesium kunye neMigraines

Ukunqongophala kweMagnesium kudla ngokuba yi-migraine. I-Migraine sisifo esiqhelekileyo, kwaye izazinzulu zonyango zinembono ezahlukeneyo ngesizathu sayo. Ngokwedatha yamva nje, i-migraine inxulumene nokunqongophala kwe-magnesium engqondweni. Izazinzulu zonyango zaseMelika zibonise ukuba i-migraine ibangelwa kukungasebenzi kakuhle kwe-metabolic yeeseli zemithambo-luvo. Iiseli zemithambo-luvo zifuna i-adenosine triphosphate (ATP) ukuze inike amandla ngexesha le-metabolism.

I-ATP yi-polyphosphate apho i-phosphoric acid e-polymerized ikhutshwa xa i-hydrolyzed kwaye ikhupha amandla afunekayo kwi-metabolism yeseli. Nangona kunjalo, ukukhululwa kwe-phosphate kufuna inxaxheba yee-enzymes, kwaye i-magnesium inokuvula umsebenzi wee-enzymes ezingaphezu kwama-300 emzimbeni womntu. Xa i-magnesium ingenawo emzimbeni, umsebenzi oqhelekileyo weeseli zemithambo-luvo uyaphazamiseka, nto leyo ekhokelela kwi-migraine. Iingcali ziqinisekisile le ngxoxo ingentla ngokuvavanya amanqanaba e-magnesium ebuchotsheni kubantu abanesifo se-migraine kwaye zafumanisa ukuba uninzi lwabo lwalunamanqanaba e-magnesium ebuchotsheni angaphantsi komndilili.

I-Magnesium kunye ne-Leg Cramps

I-magnesium ifumaneka kakhulu kwiiseli zemithambo-luvo kunye nemisipha emzimbeni womntu. Yi-neurotransmitter ebalulekileyo elawula uvakalelo lwemithambo-luvo kwaye iphumze izihlunu. Ngokwezonyango, ukunqongophala kwe-magnesium kubangela ukungasebenzi kakuhle kwemithambo-luvo kunye nemisipha, okubonakala ngokuyintloko njengokungaphumli ngokweemvakalelo, ukucaphuka, ukungcangcazela kwemisipha, i-tetany, ukuxhuzula, kunye ne-hyperreflexia. Abantu abaninzi bathambekele ekubeni "namaqhuqhuva" emilenzeni xa ulele ebusuku. Ngokwezonyango Ibizwa ngokuba "sisifo sokuxhuzula", ingakumbi xa ubanjwa ngumkhuhlane ebusuku.

Abantu abaninzi ngokubanzi bathi oku kubangelwa kukunqongophala kwe-calcium, kodwa ukongezwa kwe-calcium kukodwa akunakusombulula ingxaki yokuqaqamba kwemilenze, kuba ukunqongophala kwe-magnesium emzimbeni womntu kunokubangela ukuqaqamba kwemisipha kunye neempawu zokuqaqamba kwemilenze. Ngoko ke, ukuba unengxaki yokuqaqamba kwemilenze, kufuneka wongeze i-calcium kunye ne-magnesium ukuze usombulule ingxaki.
Kutheni i-magnesium ingenalo? Ungayongeza njani i-magnesium?

Ekutyeni kwemihla ngemihla, iintlanzi zininzi kakhulu, kwaye ziqulathe iikhompawundi ezininzi ze-phosphorus, eziya kuthintela ukufunxwa kwe-magnesium. Izinga lokulahleka kwe-magnesium kwirayisi emhlophe ecociweyo kunye nomgubo omhlophe liphezulu ukuya kuthi ga kwi-94%. Ukusela kakhulu kubangela ukufunxwa kakubi kwe-magnesium emathunjini kwaye kwandisa ukulahleka kwe-magnesium. Imikhwa efana nokusela ikofu enamandla, iti enamandla kunye nokutya ukutya okunetyuwa eninzi kunokubangela ukunqongophala kwe-magnesium kwiiseli zabantu.

I-Magnesium “yimbangi ye-calcium kwindawo yokusebenza”. I-calcium ihlala ngaphandle kweeseli ezininzi. Nje ukuba ingene kwiiseli ezahlukeneyo, iya kukhuthaza ukuqiniswa kwemisipha, ukuxinana kwemithambo-luvo, ukuvuseleleka kwemithambo-luvo, ukukhutshwa kweehomoni ezithile kunye nokuphendula koxinzelelo. Ngamafutshane, iya kwenza yonke into ibe nomdla; kwaye ukusebenza okuqhelekileyo komzimba, rhoqo, udinga ukuzola. Ngeli xesha, i-magnesium iyadingeka ukutsala i-calcium kwiiseli - ngoko ke i-magnesium iya kunceda ukukhulula izihlunu, intliziyo, imithambo yegazi (uxinzelelo lwegazi oluphantsi), isimo sengqondo (ukulawula ukukhutshwa kwe-serotonin, ukunceda ukulala), kunye nokunciphisa amanqanaba akho e-adrenaline, ukunciphisa uxinzelelo lwakho, kwaye ngamafutshane, thoba izinto.

Ukuba akukho magnesium yaneleyo kwiiseli kwaye i-calcium iyaqhubeka, abantu abavuyayo baya kuba novuyo olugqithisileyo, nto leyo ekhokelela kwiintlungu zentliziyo, ukubetha kwentliziyo ngokukhawuleza, iingxaki zentliziyo ngequbuliso, uxinzelelo lwegazi oluphezulu, kunye neengxaki zeemvakalelo (uxinzelelo, ukudakumba, ukungakwazi ukugxininisa, njl.njl.), ukungalali, ukungalingani kwamahomoni, kwanokufa kweeseli; ngokuhamba kwexesha, kunokukhokelela ekuqinisweni kwezicubu ezithambileyo (njengokuqina kweendonga zemithambo yegazi).

Nangona i-magnesium ibalulekile, abantu abaninzi abafumani ngokwaneleyo ekutyeni kwabo kuphela, nto leyo eyenza ukuba i-magnesium supplementation ibe lukhetho oludumileyo. I-magnesium supplements iza ngeendlela ezahlukeneyo, nganye ineenzuzo zayo kunye namanqanaba okufunxwa, ngoko ke kubalulekile ukukhetha uhlobo olufanela iimfuno zakho. I-Magnesium threonate kunye ne-magnesium taurate zikhetho ezilungileyo.

I-Magnesium L-Threonate

I-Magnesium threonate yenziwa ngokudibanisa i-magnesium kunye ne-L-threonate. I-Magnesium threonate ineenzuzo ezibalulekileyo ekuphuculeni ukusebenza kwengqondo, ukunciphisa ixhala kunye nokudakumba, ukunceda ekulaleni, kunye nokukhusela ingqondo ngenxa yeempawu zayo ezikhethekileyo zeekhemikhali kunye nokungena okusebenzayo ngakumbi komqobo wegazi-ingqondo.

Ingena kwiBlood-Brain Barrier: I-Magnesium threonate ibonakalisiwe isebenza ngakumbi ekungeneni kwi-blood-brain barrier, iyinika ithuba elikhethekileyo ekwandiseni amanqanaba e-magnesium yobuchopho. Izifundo zibonise ukuba i-magnesium threonate inokunyusa kakhulu i-magnesium concentrations kwi-cerebrospinal fluid, ngaloo ndlela iphucula ukusebenza kwengqondo.

Iphucula ukusebenza kwengqondo kunye nenkumbulo: Ngenxa yokuba ikwazi ukunyusa amanqanaba e-magnesium engqondweni, i-magnesium threonate inokuphucula kakhulu ukusebenza kwengqondo kunye nenkumbulo, ingakumbi kubantu abadala kunye nabo baneengxaki zengqondo. Uphando lubonisa ukuba ukongezwa kwe-magnesium threonate kunokuphucula kakhulu amandla okufunda engqondo kunye nokusebenza kwememori yexesha elifutshane.

Ukuphelisa ixhala kunye noxinzelelo: I-magnesium idlala indima ebalulekileyo ekuqhubeni kwemithambo-luvo kunye nokulinganisela kwe-neurotransmitter. I-magnesium threonate inokunceda ekunciphiseni iimpawu zoxinzelelo kunye noxinzelelo ngokunyusa ngempumelelo amanqanaba e-magnesium engqondweni.

Ukhuseleko lwe-Neuro: Abantu abasengozini yezifo ze-neurodegenerative, ezifana nesifo sika-Alzheimer kunye nesifo sikaParkinson. I-Magnesium threonate inefuthe lokukhusela i-neurodegenerative kwaye inceda ukuthintela nokucothisa ukuqhubela phambili kwezifo ze-neurodegenerative.

I-Magnesium Taurate

I-Magnesium Taurate sisongezelelo se-magnesium esidibanisa izibonelelo ze-magnesium kunye ne-taurine.

Ukufumaneka okuphezulu kwe-bioavailability: I-Magnesium taurate inokufumaneka okuphezulu kwe-bioavailability, oko kuthetha ukuba umzimba unokufunxa kwaye usebenzise olu hlobo lwe-magnesium ngokulula.

Ukunyamezelana kakuhle kwesisu: Ngenxa yokuba i-magnesium taurate inezinga eliphezulu lokufunxwa kwindlela yesisu, ihlala inokubangela ukungonwabi kwesisu.

Ixhasa impilo yentliziyo: I-Magnesium kunye ne-taurine zombini zinceda ekulawuleni ukusebenza kwentliziyo. I-Magnesium inceda ekugcineni isigqi sentliziyo esiqhelekileyo ngokulawula uxinano lwe-calcium ion kwiiseli zemisipha yentliziyo. I-Taurine ineempawu ze-antioxidant kunye ne-anti-inflammatory, ikhusela iiseli zentliziyo kuxinzelelo lwe-oxidative kunye nomonakalo wokudumba. Izifundo ezininzi zibonise ukuba i-magnesium taurine ineenzuzo ezibalulekileyo zempilo yentliziyo, yehlisa uxinzelelo lwegazi oluphezulu, yehlisa ukubetha kwentliziyo okungaqhelekanga, kwaye ikhusela kwi-cardiomyopathy. Ifanelekile ngakumbi kubantu abasengozini yesifo sentliziyo.

Impilo yeNkqubo yeNervous: I-Magnesium kunye ne-taurine zombini zidlala indima ebalulekileyo kwinkqubo yenervous. I-Magnesium yi-coenzyme ekuhlanganisweni kwee-neurotransmitters ezahlukeneyo kwaye inceda ukugcina umsebenzi oqhelekileyo wenkqubo yenervous. I-Taurine ikhusela iiseli zenervous kwaye ikhuthaza impilo ye-neuronal. I-Magnesium taurate inokuphelisa iimpawu zokuxhalaba kunye nokudakumba kwaye iphucule umsebenzi opheleleyo wenkqubo yenervous. Kubantu abanexhala, ukudakumba, uxinzelelo olungapheliyo kunye nezinye iimeko ze-neurological

I-Antioxidant kunye ne-anti-inflammatory: I-Taurine ine-antioxidant enamandla kunye ne-anti-inflammatory, enokunciphisa uxinzelelo lwe-oxidative kunye neempendulo zokuvuvukala emzimbeni. I-Magnesium ikwanceda ekulawuleni inkqubo yomzimba yokuzikhusela kunye nokunciphisa ukudumba. Uphando lubonisa ukuba i-magnesium taurate inokunceda ekuthinteleni iintlobo ngeentlobo zezifo ezingapheliyo ngenxa yeempawu zayo ze-antioxidant kunye ne-anti-inflammatory.

Iphucula impilo ye-metabolism: I-Magnesium idlala indima ebalulekileyo kwi-metabolism yamandla, ukukhutshwa kunye nokusetyenziswa kwe-insulin, kunye nokulawulwa kweswekile yegazi. I-Taurine ikwanceda ukuphucula uvakalelo lwe-insulin, inceda ukulawula iswekile yegazi, kwaye iphucule i-metabolic syndrome kunye nezinye iingxaki. Oku kwenza i-magnesium taurine isebenze ngakumbi kunezinye izongezo ze-magnesium kulawulo lwe-metabolic syndrome kunye nokuxhathisa i-insulin.

I-taurine kwi-magnesium taurate, njenge-amino acid eyahlukileyo, ikwanazo neziphumo ezininzi:
I-Taurine yi-amino acid yendalo equlethe i-sulfur kwaye yi-amino acid engeyiyo iproteni kuba ayithathi nxaxheba ekuhlanganisweni kweproteni njengezinye ii-amino acid. Eli candelo lisasazeke kakhulu kwizicubu ezahlukeneyo zezilwanyana, ngakumbi entliziyweni, engqondweni, emehlweni, nakwimisipha yamathambo. Ikwafumaneka kwiintlobo ngeentlobo zokutya, njengenyama, intlanzi, iimveliso zobisi, kunye neziselo zamandla.

I-Taurine emzimbeni womntu inokuveliswa kwi-cysteine ​​​​phantsi kwesenzo se-cysteine ​​​​sulfinic acid decarboxylase (Csad), okanye ingafunyanwa ekutyeni kwaye ifunxwe ziiseli ngokusebenzisa abathuthi be-taurine. Njengoko ubudala bukhula, uxinzelelo lwe-taurine kunye ne-metabolites yayo emzimbeni womntu luya kuncipha kancinci kancinci. Xa kuthelekiswa nabantu abancinci, uxinzelelo lwe-taurine kwi-serum yabantu abadala luya kuncipha ngaphezulu kwe-80%.

1. Xhasa impilo yentliziyo:
Ilawula uxinzelelo lwegazi: I-Taurine inceda ekunciphiseni uxinzelelo lwegazi kwaye ikhuthaza ukujikeleza kwegazi ngokulawula ibhalansi ye-sodium, i-potassium kunye ne-calcium ions. I-Taurine inokunciphisa kakhulu amanqanaba oxinzelelo lwegazi kwizigulana ezine-hypertension.
Ikhusela intliziyo: Inefuthe le-antioxidant kwaye ikhusela i-cardiomyocytes ekonakaleni okubangelwa luxinzelelo lwe-oxidative. Ukongezwa kweTaurine kunokuphucula ukusebenza kwentliziyo kwaye kunciphise umngcipheko wesifo sentliziyo.

2. Khusela impilo yenkqubo yemithambo-luvo:
Ukukhusela i-Neuroprotection: I-Taurine inefuthe lokukhusela i-neurodegenerative, ithintela izifo ze-neurodegenerative ngokuzinzisa ii-membranes zeseli kunye nokulawula ukuxinana kwe-calcium ion, ithintela ukuvuseleleka okukhulu kwe-neuronal kunye nokufa.
Isiphumo sokuthomalalisa: Inefuthe lokuthomalalisa kunye nelokuxhalaba, inceda ukuphucula imeko yeemvakalelo kunye nokunciphisa uxinzelelo.

3. Ukukhusela umbono:
Ukukhuselwa kwe-retina: I-Taurine yinxalenye ebalulekileyo ye-retina, inceda ukugcina ukusebenza kwe-retina kunye nokuthintela ukuwohloka kombono.
Isiphumo se-antioxidant: Singanciphisa umonakalo wee-free radicals kwiiseli ze-retinal kwaye sibambezele ukwehla kokubona.

4. Impilo ye-metabolic:
Ilawula iswekile egazini: I-Taurine inceda ekuphuculeni uvakalelo lwe-insulin, ilawule amanqanaba eswekile egazini, kwaye ithintele i-metabolic syndrome.
Ukuguqulwa kwamafutha emzimbeni: Kunceda ekulawuleni ukuguqulwa kwamafutha emzimbeni kwaye kunciphisa amanqanaba e-cholesterol kunye ne-triglyceride egazini.

5. Ukusebenza kwezemidlalo:
Ukunciphisa ukudinwa kwemisipha: I-Taurine inokunciphisa uxinzelelo lwe-oxidative kunye nokuvuvukala okuveliswa ngexesha lokuzilolonga kwaye inciphise ukudinwa kwemisipha.
Ukuphucula ukunyamezela: Kunokuphucula amandla okuncitshiswa kwemisipha kunye nokunyamezela, kuphucule ukusebenza kwezemidlalo.