sagari snrakshak (shark dhaal)

mahasagar rakshak heey shark dhaal tantradnyanacha vapar pratirupan upkarananche utpadak aahe. sagari snrakshak electronic upkarane sharkche halle rokhanyasathi vidyutchumbakiy kshetra tayar karatat aanee surfer, scooba diverse, snorkelers, bhalafek, sagari kayak machchimar, naukanchya jaltaran kshetra aanee sagari masemarisathi vapartat. sharkche halle rokhanyasathi prabhavita nirdharit karnyasathi swatantra chachanya pratirupan bajarpethetil kahee vidyut upkarananpaiki heey eka manale jaate, jaree heey lakshat aale aahe qee shark shiild tantradnyan serve paristhitinmadhye karya karat nahee, tarr flinder vidyapithachya naveen modelling sanshodhanat asey mhatale aahe qee vaiyaktik electronic pratibandhakancha yogya vapar haah bhavishyatil mrutyu aanee dukhapati rokhanyasathi eka prabhavi marg aahe, assa andaj aahe qee hii upkarane pudhil 50 varshant kinarpattivar 1063 austreliyan lokanche jeevan vachavu shakatat. 
itihas.
shark vikarshan tantradnyanat vaparlela mool tarang-prakar grem charter, sherman ripley aanee norman starkey yaa teen shodhakanni tayar keela hota aanee 1995 madhye podd holdings limited yaa nettle shark board aanee dakshin aafrikechya sarkarchya anshatah malkichya sanyukt upkram companyne too jaaree keela.
1990 chya dashakachya uttaradhat kwazulu-nettle shark boardney sharkpod (snrakshak sagari upkaran kinwa fakt podd) haah pahila vidyut shark pratibandhak vikasit keela. 2001 madhye, kwazulu-natal shark mandalane sharkpodche vitaran thambavale. bauddhik sampattiche serve adhikar dakshin austreliyatil seachange technology holdings yaa companyla denyat aale hote, jyanni vividh naveen arj paytant vikasit kele, parinami april 2002 madhye shark shiild yaa brand navane vyavsayik utpadan shreni tayar jhaali.
2007 madhye, shark shieldney mool mool aanee aanee jaagi utpadananchi tisari pidhi sadar kelee, kelee scooba7 jaaga ghetali) samavisht karnyasathi deu kelelya utpadananchi shreni vadhavali aanee done naveen designs sadar kelyah kelyah friedam7 jaaga ghetali), eka ashtapailu paryay jyacha vapar scooba diverse, bhalafek, boater aanee kaykarsah samudra-vaparkartyanchya vistrut shrenidware keela jaau shakato; aanee aanee, surfboardver kinwa stand-up paddleboardver surferspasoon sanrakshn denyasathi basavanyasathi design kelele aahe.
shark shiild tantradnyan pudhe austreliyan company seachange technology holdings pti limitedne vikasit kele aanee aktoobar 2006 madhye sthapan jhalelya shark shiild pti limited yaa tyachya vyapari companyne tyache vyaparikaran kele. seachange technology holdings pti limitedne 2018 madhye tyache naav badaloon ocean guardian holdings limited asey kele aanee shark shiild pti limited samudra snrakshak mhanoon vyapar karat hote.
2016 madhye, paschim austreliya sarkarchya sanshodhan aanee vikas nidhisah, mahasagar sanrakshakane friedam + surf yaa done vela vishvavijete surfer tomm caroll yanchya bhagidarit tayar kelelya utpadanachi ghoshana kelee, jeey visheshtah sarfarsasathi tayar kele gele aahe. naveen rachanene junya surf 7 chaa magcha antena kadhoon takala, jyachya jaagi surfboardchya khalchya bajula sticker-patal antena deela gela, jyat purnapane hastantaraniy power module tail padchya kikarmadhye sthit hote.
janewari 2019 madhye companyne shark shiild tantradnyanavar aadharit jagatil pahila handheld electrical shark deterrent espere navachi ghoshana kelee. espearchi rachana pramukhyane bhala machchimar, gotakhor aanee snorkelersasathi kelee gelee aahe. jahajanchya bhovati eka surakshit jaltaran kshetra tayar karnyasathi karnyasathi samavisht karnyasathi sagari snrakshak utpadan shrenicha aanakhi vistar karnyat aala aanee samudratil machchimaranna shark naan gheta tyanche maase utarvinyat madat karnyasathi karnyasathi.
26 meey 2017 roji paschim austreliya sarkarne vaidnyanikdrushtya siddha jhalelya vidyut shark pratibandhakansathi $200 grahak savalat lagoo kelee. mahasagar snrakshak friedam 7 aanee friedam + surf hii ekmev utpadane manjur aahet.
paramparik sagari khelanvyatirikt, polis aanee naudalansah vividh sarkari sansthanmadhye sagari snrakshak utpadane vaparali jaatat aanee nirmiti sadasyandvare 'uthal' aanee 'yaa donhi chitrapatanchya chitrikaranat vaparali jaatat. lamb pallyachi jaltaranpatu dyna nyad hiney kyuba teey florida paryant pinjaryashivay tichya vikrami pohanyachya krasingmadhye shark shieldchya madatine purn kele.
karyakshamta.
serve chondrichthiyanschya nakanmadhye 'empule auph laurenzini' navache atyant sanvedanshil vidyut receptors asatat. jail bharalelya yaa chhotya pishavyanna, visheshtah eka meetarpeksha qamee antaravar, shikarikadoon vidyut pravah jaanavato. jailey atyant pravahakeey asate aanee chhidra ughadatana vidyut kshamata ampulamadhye hastantarit karnyas anumati dete. ann pajtana kinwa shodhat asatana teey yaa alp-shrenichya sanvedakancha vapar karatat. teey lamb pallyachya sajeev vastooncha magova ghenyasathi vidyut receptorscha vapar karat naheet; audition aanee ghran yasarkhya itar indriye prathamik chalak aahet.
sagari snrakshak upkarane eka vidyut kshetra tayar karatat jee sharkchya lorenzinichya empulavar parinam karnari apriy sanvedana nirman karate. jevha shark maidanachya parisarat yeto, tevha tyala aniyantrit snayu aakunchan hote, jyamule too tyaa bhagatoon paloon jaato.
done electrodavarun kshetra prakshepit kele jaate, jeey vaparkartyala vedhanare lambvartulakar kshetra tayar karate. shet tayar karnyasathi donhi electrode panyat budavale jaane aavashyak aahe. dakshin aafrikechya rashtriy antaral sansthene 2012 madhye kelelya sanshodhanat shark shiild vidyut kshetracha vyas sumare 4-5 meater asalyacha andaj vartavanyat aala aahe.
shark heey sambhavya shikari pranyandvare utpadit vidyutchumbakiy dalikade aakarshit hotat, tarr sharkchya kavchadvare utsarjit honare electronic kshetra sharkla upkaranakade aakarshit karat nahee, tyamule vaparkartyachya parisarat shark aakarshit honyacha dhoka vadhanar nahee. sharkche sanvedanatmak avyav qamee-voltage pravanatesathi (> 5 aine. vhee. see. emm.) tivra sanvedanshil asatat, jyamule tyanna qamee antarane 1 teey 8 heartz darmyanchi atishay qamee-varanvarta asaleli electronic kshetre shodhata yetat, jyanantar itar indriye (drushti, chemoriception aanee mechanoreception) sharkla tyacha shikar pakadanyat madat karatat. electronic shark pratibandhak jyaa shreneet shikarasarkhya uttejananchya (sumare 1-100 envy/semee) samatulya kshetra utsarjit karato, tee tyanchya alp-shrenichya shodh sulbhatepeksha khoop pudhe aahe. jarr sharkney upkaranakade bhet dilee, tarr vidyut kshetrachi takad jitaki jawal yete titaki majboot hote aanee lavkarach sharkla atyant aswasthata hote, jyamule tyala door valave lagate. yaa parinamache pratirupan pratirupan vaidnyanik abhyasatoon asey disun yete qee 3 meater antaravar utpadit utpadan heey shikaradvare utpadit utpadanapeksha barech jaast aahe aanee 6 meater trijyechya palikade lakshaniyaritya khalee yete, jithe teey sharkchya alp-shreni shodhanyachya kshamatechya palikade aahe.
chachani aanee sanshodhan.
mool sharkpodchi dier betavar aath varshe pramukhyane mothya mothya sharks chachani karnyat aalee hotee aanee 1997 madhye austreliya aanee dakshin aafriketil mothya mothya shark, tiger shark, hammerhead shark aanee sharkchya itar prajatinviruddha ronn teller aanee valery teller yanni chachani kelee tevha sharkla rokhanyat yashasvi tharalele heey pahile electronic upkaran hote; sakaratmak parinamansah tyanni tyabaddal 'shark podd' navacha mahitipat tayar keela.
2003 madhye, see. eff. smitt, sankhyiki vibhag, pretoriya vidyapith, dakshin africa aanee vhee. pedmers, pranishastra vibhag, durban-westwhill vidyapith, dakshin africa (pedmeyers tyaveli nettle shark boardware niyukt kele gele hote) yanni "vidyut vikarshak vapartana sharkchya hallyachya sambhavyatecha andaj lavat sanshodhan kele". sharkpodchya chachanyanchya done malikanmadhye, vijevar hallah karnyasathi aavashyak asalelya velenusar, veej bund aanee veej chaloo (sakriy) paristhitit mahitee gola kelee gelee. pahila prayog purn jhalyanantar (jyamadhye 98 paach minitanchya sakriy kalavadhit 8 halle yashasvi jhaale) aanee dusra prayog purn jhalyanantar (jyamadhye 24 daha minitanchya sakriy kalavadhit konatehi yashasvi halle nondavale gele naheet) swatantrapane nishkarsh kadhale gele. sarvasadharanpane, jastit jaast 5 minitant hallyachi sambhavyata power-auph modmadhye sumare 0.7 varoon power-aun modmadhye sumare 0.08 paryant aanee jastit jaast 10 minitanchya kalavadhit 0.90 teey 0.16 paryant qamee jhaali.
2010 madhye, dakshin austreliyatil vyavsayik aarogya, suraksha aanee kalyankari kayadyanche prashasana karnyasathi jababdar asalelya sarkari sansthene, dakshin austreliyatil suraksha karya dakshin austreliyane shark shiild friedam 7 utpadanachya parinamkaraktecha abhyas karnyasathi dakshin austreliyan sanshodhan aanee vikas sansthela niyukt kele. sanshodhan chamoone dakshin austreliyachya nepchyoon betanvar, aanee dakshin aafriketil seal betavar, anukrame sthir chaara (naisargik shikar) aanee gatishilpane odhalelya seal decoy yaa donhikade mothya sharkchya pratisadachi chachani karnare kshetriy prayog kele, tyanchya nishkarshanche dastaivajikaran eka sanshodhan ahavalat kele jyache shirshak aaheh aaheh sharkchya (" carcrodon carcheria ") vartanavar shark shiild electric deterrentche parinam". dakshin austreliyatil nepchyoon betanvar sthir chaara vaparoon ekoon 116 chachanya ghenyat aalya aanee dakshin aafriketil seal betajaval seal decoy vaparoon 189 tooe aayojit karnyat aale. sthir chaara chachanyandarmyan ghetalelya betschya pramanavar pratibandhakane parinam keela nahee. pratibandhamule sthir chaara ghenyasathi lagnara vel aanee pratyek drushtikonatun parasparsanvadachi sankhya vadhali. shark shieldtmcha prabhav serve sharkvar eksaman navhata. jevha teey sakriy jhaale tevha pratibandhakchya 2 meterchya aat parasparsanvadachi sankhya qamee jhaali. pratibandhak sakriy asatana gatishil seal decoy touu darmyan konatehi ullanghan jhaale nahee aanee keval done prushthbhagavaril parasparsanvad disun aale, tarr pratibandhak sakriy nastana 16 ullanghane aanee 27 prushthbhagavaril parasparsanvadanchya tulanet. jaree mothya sharkla aakarshit karnyachya yantrachya kshamateche moolyankan karnyasathi gola keleli bareek-praman sthitee aanee upasthiti/anupasthitichi mahitee eka feripurati maryadit hotee, parantu aamchya nikalanni asey soochit kele nahee qee shark pratibandhakankade aakarshit jhaale hote. yaa pratibandhakacha mothya sharkchya vartanavar parinam jhaala, parantu serve paristhitinmadhye tyanna rokhale kinwa mage hatvale nahee.
julai 2016 madhye, western austreliya vidyapithatil neurocology gatatil shark sanshodhakanni plos vanvar shark shiild shark pratibandhakchya parinamkaraktecha abhyas prakashit keela hota, "kitee jawal aahe? mothya sharkchya vartanavar pranghatak nasalelya vidyut shark pratibandhakcha parinam. yaa sanshodhan pathkala paschim austreliya sarkarne nidhi puravala hota aanee tyat uva ocean instituteche sanchalak pradhyapak shaun collin, sahyogi pradhyapak nathan haart aanee dow. rayan kempster yancha samavesh hota. sudharit styrio-camera pranalicha vapar karoon, vyavsayikdrushtya upalabdh asalelya vaiyaktik vidyut shark pratibandhak (shark shiild friedam 7) chya upasthitit pandhare shark (carcarodon carcheria) aanee bated lakshya yanchyatil vartanukisambandhi parasparsanvadache praman sanshodhanane nishchit kele. styrio-camera pranaline see chya vartanukichya pratisadanche moolyankan saksham kele.carcheria jevha tyanna naisargikaritya naisargikaritya vijepeksha anek putt jaast shaktishali pranghatak nasalelya vidyut kshetracha samna karatat. tyanchya pahilya nirikshan kelelya bhetivar, serve see. karchariyanna sarasarine (±std) mage hatvale gele. truti) 131 (±10.3) seey. mea. chee nikatata, jee 9.7 (± 0.9) v/m chya sarasari voltage pravahashi sambandhit hotee. tyanantarchya pratyek samna, tyanchi nikatata sarasari 11.6 centimeterne qamee jhaali, jee prati samna sarasari 2.6 (± 0.5) vhee/meterne vidyut kshetrachya sahishnutet vaadh honyashi sambandhit hotee. sahishnutet vaadh hounahi, sharkchya sakriy kavchasah pratyek chachanichya kalavadhisathi sharkla parasparsanvad karnyapasoon rokhale jaat rahile. shivay, vidyut avarodhak sharkna aakarshit karatat yaa siddhantala nishkarsh konatehi samarthan dett naheet. yaa abhyasache parinam, pranghatak nasalelya sharkchya vidyut pratibandhakanchya parinamkaraktecha, seechya vartanavar tyacha prabhav asalyacha parimanatmak purava detat.carcheria aanee itar shark pratibandhak tantradnyanachya chachanisathi eka achook paddhat.
paddhat western austreliya vidyapithachya sanshodhanacha aadhava ghetana, austreliyan bhaugolik masikane 'gret white shark deterrent jawaljawal 100 takke prabhavi' yaa shirshakacha eka lekh prakashit keela.
2016 madhye, austreliyan grahak samarthan gut nivadine kelelya abhyasat asey aadhalun aale qee mahasagar snrakshak (shark dhaal) haah ekmev swatantrapane chachani kelela shark vikarshak prabhavi hota.
2018 madhye nyu south wells rajya sarkarne sarfarsasathi paach vaiyaktik shark pratibandhakanchya prabhavitechi chachani ghenyasathi flinders vidyapithane kelelya sanshodhanasathi nidhi deela. flinderne ghetalelya betschee takkewari, betapasoonche antar, pasachi sankhya aanee sharkchi pratikriya pahili jaau shakate qee nahee yachee tulana karoon sarfarsasathi vikasit kelelya paach vaiyaktik shark pratibandhakanchi chachani kelee. dakshin austreliyatil nepchyoon betanchya sagari udyanat ekoon 297 yashasvi chachanya jhalya, jyaa darmyan 44 vegvegalya mothya shark (carcarodon carcheria) chaa yaa betavar sanvad jhaala aanee ekoon 1413 paas jhaale. pratibandhakanchi parinamkarakta badaloo shakali, jyat friedam + sarfmule sharkchya vartanavar sarvadhik parinam hoto aanee ghetalelya charachi takkewari 96 takkyanvarun (niyantran mandalachya tulanet) 40 takkyanparyant qamee hote. friedam surf + sakriy asatana sharkche pattyashi asalele sarasari antar 1.6 ± 0.1 metervaroon 2.6 ± 0.1 meetarparyant vadhale. itar pratibandhakancha mothya sharkchya vartanavar maryadit kinwa mojata yenyajoga parinam jhaala nahee. shakti vishleshanachya aadhare, vishvasarhpane shodhala jaau shakanara sarvat lahan prabhav aakar 15 takke hota, joou prathamach prabhav aakarabaddal mahitee pradan karato joou eka pratibandhak abhyas vishvasarhpane shodhu shakato.
shark shiild tantradnyanacha samavesh asalele sharkche halle.
shark shiild tantradnyanacha samavesh asalelya teen dnyat mrutyu jhaale aahet; paul buckland (2002), pieter clarkson (2011) aanee garry johnson (2020). 
paul bucklandne shark podd upkaran ghatale hote, jeey dakshin aafriket vikasit kelelya utpadanachi pahili aavrutti hotee. mrutyunivarkane assa nishkarsh kadhala qee heey upkaran chukiche paridhan kele gele hote aanee pudhil shifaras kelee; "mhanoon mea shifaras karato qee, mrutyunivarak kayadyachya kalam 25 (2) nusar, vyavsayik aanee manoranjak gotakhoranni, sharkchya upasthiticha dhoka asalelya panyat kaam kartana, 'shark podd' kinwa 'shark shiild' prakarche shark vikarshak upkaran ghalave, parantu upkarane utpadakachya soochanannusar vaparali jaavi aanee panyat sampoorn kalavadhisathi chaloo thewali jaavi.""
pieter clarkson nehmich sharkche kavach ghalat asey, jyachi pushti hallyanantar panyachya prushthbhagavar yantrachya shepatitun lahan lahan vastoonchya upasthitine hote. mrutyunidankartyanchya nishkarshanmadhye shark dhaal tantradnyanacha mukhya sandarbh hotah "shree. clarkson nehmich sharkchi dhaal ghalat asey, jee tyane tyachya pattyala jodaleli hotee. heey batteriever chalanare upkaran aahe jeey chaloo aanee bund kele jaau shakate aanee konatyahi sharkla teey jawal yetach mage hatavanyasathi design kelele aahe. shree. rodd mhanala qee kadhikadhi shree. clarkson jevha talashi asato tevha sharkche kavach bund karat asey parantu bahutek vela too panyat pravesh kelyavar teey chaloo karat asey aanee nantar prushthbhagavar aalyavar teey punha bund karat asey. shree. 17 februwari 2011 roji ghadalelya ghatanechya velee shree. clarkson yanni sharkche kavach chaloo kele hote qee nahee heey rodla maheet navhate."
sharkchya hallyachya velee garry johnsonne friedam 7 upkaran ghatale hote. johnson samudraspativaril eka khadkaparyantchi resha surakshit karat asatana dhakka lagnyacha dhoka qamee karnyasathi heey upkaran tatpurte bund kele gele asanyachi shakyata aahe. durdaivane, yaa kalat jevha upkaran bund hote, tyaa chhotya kshanant, johnsonver eka mothya mothya sharkney hallah keela aanee tyala thaar marle.

