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Aardrykskunde

Graad 5

Gesondheid en welsyn

Module 34

Siektes: miv/vigs

MIV / VIGS-EMBLEEM

Aktiwiteit 1

Om ‘n konsep te definieer

[lu 1.3]

  • Na ‘n deeglike groepgesprek, formuleer kortliks ‘n definisie vir MIV , asook vir VIGS om die verskil duidelik te maak.

M iv:______________

Vigs:________________

Hierdie siekte het ‘n uitwerking op miljoene mense op ons kontinent alleen – so ook dwarsoor die wêreld. Die feit dat daar nog geen geneesmiddel hiervoor ontdek is nie, maak dit ‘n baie gevreesde siekte.

DIE MIV-VIRUS VEROORSAAK DIE SIEKTE VIGS

Die letters VIGS staan vir

Verworwe

Immuniteits-

Gebrek-

Sindroom

  • Oorsprong en aard:‘n Mens se liggaam het ‘n ingeboude immuniteitstelsel wat hom teen siektes en infeksies help beskerm. Die MIV-virus tas hierdie stelsel aan en verhoed dat dit effektief funksioneer. Die virus kom in die mens se liggaamsvloeistowwe voor en verswak die immuniteitstelsel sodat die liggaam dit moeilik vind om teen siektes soos TB, longontsteking en diarree te baklei. Daar kan slegs deur middel van ‘n bloedtoets vasgestel word of iemand met die virus besmet is.Soos met baie van die ander siektes, versprei Vigs makliker in digbevolkte gebiede, veral waar mense nie gesonde kos inneem nie. Die MIV-virus kan op die volgende maniere van een persoon na ‘n ander oorgedra word:
  • Wanneer ‘n persoon wat met die virus besmet is, onbeskermde seks (sonder die gebruik van ‘n kondoom) met iemand anders het en die semen of vaginale vloeistof met dié van ‘n ander meng.
  • Wanneer die bloed van ‘n besmette persoon met dié van ander meng. Dit kan tydens bloedoortappings gebeur, of as besmette spuitnaalde of skeermeslemme gebruik word.
  • ‘n Swanger vrou wat met die virus besmet is, kan dit na haar baba oordra.

Sedert hierdie gevreesde siekte in ongeveer 1980 vir die eerste keer gediagnoseer is, het dit baie vinnig versprei.

Aktiwiteit 2

Om statistiek met behulp van ‘n grafiek uit te beeld

[lu 1.1; 1.7]

  • Gebruik die volgende statistiese gegewens en stel ‘n blokgrafiek saam om die toename in MIV-gevalle tussen 1990 en 1999 uit te beeld.
Jaar Persentasie mense wat na raming met MIV besmet is
1990 0,7 %
1991 1,7 %
1992 2,2 %
1993 4 %
1994 7,6 %
1995 10,4 %
1996 14,2 %
1997 17 %
1998 22,8 %
1999 22,4 %

(Onthou om duidelike askalibrering en byskrifte, asook ‘n verklarende opskrif, vir jou grafiek te verskaf.)

  • Tipes simptome:
  • ‘n verswakte liggaam wat baie vatbaar is vir ander siektes.
  • Behandeling:

Hoewel vigs nog ‘n ongeneeslike siekte is, kan lyers wel sekere medikasie neem om die simptome te verlig. Die medikasie is egter baie duur.

  • Deurbraak:

Die MIV-virus is ‘n baie slim kalant wat die liggaam stilletjies binnedring en dan die eienskappe van ander liggaamselle aanneem. Sodoende kan dit ongemerk in die liggaam rondbeweeg en die menslike immuniteitselle infekteer. Navorsers aan die Pasteur-instituut in Frankryk voel dat hulle baie naby aan ‘n deurbraak is. Lees die koerantberig en bespreek die inhoud daarvan in jul groepe.

deurbraak in stryd teen vigs kom dalk binnekort

(SAPA-AFP)

In ‘n moontlike deurbraak in die stryd teen MIV/vigs is teenliggaampies gestimuleer wat die MI-virus dalk kan keer om menslike immuniteitselle te infekteer, het Franse navorsers onlangs bekend gemaak.

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
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Source:  OpenStax, Sosiale wetenskappe: aardrykskunde graad 5. OpenStax CNX. Sep 22, 2009 Download for free at http://cnx.org/content/col10985/1.2
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