SlideShare a Scribd company logo

Oral presentation

•
•
M
Matthew Dent

BEB801 Project

Engineering
1 of 17
Download to read offline
TESTING CONDITIONS TEST # Date Power (W) Pressure (mTorr) Time (min) Power Source (DC/RF) 1 11 May 40 10 60 DC 2 19 May 100 5 90 DC 3 7 June (BILAYER) TOP 100 5 15 DC BOTTOM 40 10 60
CHARACTERIZATION RESULTS TEST # Thickness (nm) Adhesion Test Resistance (Ω) 1 50 FAIL (Peeled-off after 7 min) 17.9 2 390 - 400 FAIL (Peeled-off after 5 min) 6.18 3 BILAYER TOP: 385-390 FAIL (Peeled-off after 5 min) 7.8 BOTTOM: 10-15
Oral presentation
Oral presentation
Oral presentation
Oral presentation
Oral presentation
Oral presentation
Oral presentation
Oral presentation

Recommended

FLAC 4
FLAC 4FLAC 4
FLAC 4Mohammadhossein Gholampoor
 
Pasos para presentar blog
Pasos para presentar blogPasos para presentar blog
Pasos para presentar blogjohanna estefania tituaña anchundia
 
Pasos para presentar blog
Pasos para presentar blogPasos para presentar blog
Pasos para presentar blogjohanna estefania tituaña anchundia
 
Bachelor degree
Bachelor degreeBachelor degree
Bachelor degreeGam Thi Hong Nguyen
 
Smartmedia Interactive Products for Business, Education, Entertainment
Smartmedia Interactive Products for Business, Education, EntertainmentSmartmedia Interactive Products for Business, Education, Entertainment
Smartmedia Interactive Products for Business, Education, EntertainmentSmartMedia srl / SmartMedia USA Inc / OOO SmartMedia Russia
 
Conceptos basicos de multimedia
Conceptos basicos de multimediaConceptos basicos de multimedia
Conceptos basicos de multimediacesar romero
 
La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...
La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...
La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...Alberto Pozzi
 
Cash
CashCash
CashDenise Neves
 

Recommended

FLAC 4
FLAC 4FLAC 4
FLAC 4Mohammadhossein Gholampoor
 
Pasos para presentar blog
Pasos para presentar blogPasos para presentar blog
Pasos para presentar blogjohanna estefania tituaña anchundia
 
Pasos para presentar blog
Pasos para presentar blogPasos para presentar blog
Pasos para presentar blogjohanna estefania tituaña anchundia
 
Bachelor degree
Bachelor degreeBachelor degree
Bachelor degreeGam Thi Hong Nguyen
 
Smartmedia Interactive Products for Business, Education, Entertainment
Smartmedia Interactive Products for Business, Education, EntertainmentSmartmedia Interactive Products for Business, Education, Entertainment
Smartmedia Interactive Products for Business, Education, EntertainmentSmartMedia srl / SmartMedia USA Inc / OOO SmartMedia Russia
 
Conceptos basicos de multimedia
Conceptos basicos de multimediaConceptos basicos de multimedia
Conceptos basicos de multimediacesar romero
 
La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...
La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...
La "sensazione di perdere un affare" - eCommerce: Convincere clienti incerti ...Alberto Pozzi
 
Cash
CashCash
CashDenise Neves
 
ISE_Newsletter_2011
ISE_Newsletter_2011ISE_Newsletter_2011
ISE_Newsletter_2011Tomas Rodriguez
 
Ppt bu naning uas
Ppt bu naning uasPpt bu naning uas
Ppt bu naning uasTiffana Maheswary Pragita Saputri
 
молочные продукты
молочные продуктымолочные продукты
молочные продуктыВспомогательный образовательный сайт
 
Certification of work from Eximbank
Certification of work from EximbankCertification of work from Eximbank
Certification of work from EximbankGam Thi Hong Nguyen
 
Presentation New
Presentation NewPresentation New
Presentation NewDr. Soumen Chatterjee
 
Trabajo de academia campo histórico social julio martín
Trabajo de academia campo histórico social julio martínTrabajo de academia campo histórico social julio martín
Trabajo de academia campo histórico social julio martínjuliomartin3113
 
estimation of irrigation requirement using remote sensing
estimation of irrigation requirement using remote sensingestimation of irrigation requirement using remote sensing
estimation of irrigation requirement using remote sensingNayan Rao
 
Nosología de Lumbalgia
Nosología de LumbalgiaNosología de Lumbalgia
Nosología de LumbalgiaIsaac Gonzalez
 
Glhimar
Glhimar Glhimar
Glhimar Hiniesta Mallofret
 
Introduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxIntroduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxupamatechverse
 
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICSAPPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICSKurinjimalarL3
 
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IVHARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IVRajaP95
 
★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR
★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR
★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR9953056974 Low Rate Call Girls In Saket, Delhi NCR
 
UNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its PerformanceUNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its Performancesivaprakash250
 
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur High Profile
 
SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )Tsuyoshi Horigome
 
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Christo Ananth
 
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).pptssuser5c9d4b1
 
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)Suman Mia
 
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICSHARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICSRajkumarAkumalla
 
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...ranjana rawat
 
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete RecordCCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete RecordAsst.prof M.Gokilavani
 

More Related Content

Viewers also liked

Certification of work from Eximbank
Certification of work from EximbankCertification of work from Eximbank
Certification of work from EximbankGam Thi Hong Nguyen
 
Trabajo de academia campo histórico social julio martín
Trabajo de academia campo histórico social julio martínTrabajo de academia campo histórico social julio martín
Trabajo de academia campo histórico social julio martínjuliomartin3113
 
estimation of irrigation requirement using remote sensing
estimation of irrigation requirement using remote sensingestimation of irrigation requirement using remote sensing
estimation of irrigation requirement using remote sensingNayan Rao
 
Nosología de Lumbalgia
Nosología de LumbalgiaNosología de Lumbalgia
Nosología de LumbalgiaIsaac Gonzalez
 

Viewers also liked (9)

ISE_Newsletter_2011
ISE_Newsletter_2011ISE_Newsletter_2011
ISE_Newsletter_2011
 
Ppt bu naning uas
Ppt bu naning uasPpt bu naning uas
Ppt bu naning uas
 
молочные продукты
молочные продуктымолочные продукты
молочные продукты
 
Certification of work from Eximbank
Certification of work from EximbankCertification of work from Eximbank
Certification of work from Eximbank
 
Presentation New
Presentation NewPresentation New
Presentation New
 
Trabajo de academia campo histórico social julio martín
Trabajo de academia campo histórico social julio martínTrabajo de academia campo histórico social julio martín
Trabajo de academia campo histórico social julio martín
 
estimation of irrigation requirement using remote sensing
estimation of irrigation requirement using remote sensingestimation of irrigation requirement using remote sensing
estimation of irrigation requirement using remote sensing
 
Nosología de Lumbalgia
Nosología de LumbalgiaNosología de Lumbalgia
Nosología de Lumbalgia
 
Glhimar
Glhimar Glhimar
Glhimar
 

Recently uploaded

Introduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxIntroduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxupamatechverse
 
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICSAPPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICSKurinjimalarL3
 
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IVHARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IVRajaP95
 
UNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its PerformanceUNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its Performancesivaprakash250
 
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur High Profile
 
SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )Tsuyoshi Horigome
 
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Christo Ananth
 
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).pptssuser5c9d4b1
 
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)Suman Mia
 
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICSHARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICSRajkumarAkumalla
 
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...ranjana rawat
 
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete RecordCCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete RecordAsst.prof M.Gokilavani
 
OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...
OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...
OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...Soham Mondal
 
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur EscortsHigh Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur High Profile
 
Porous Ceramics seminar and technical writing
Porous Ceramics seminar and technical writingPorous Ceramics seminar and technical writing
Porous Ceramics seminar and technical writingrakeshbaidya232001
 
VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130
VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130
VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130Suhani Kapoor
 
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur EscortsHigh Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escortsranjana rawat
 
The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...
The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...
The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...ranjana rawat
 

Recently uploaded (20)

Introduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxIntroduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptx
 
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICSAPPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
APPLICATIONS-AC/DC DRIVES-OPERATING CHARACTERISTICS
 
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IVHARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
 
★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR
★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR
★ CALL US 9953330565 ( HOT Young Call Girls In Badarpur delhi NCR
 
UNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its PerformanceUNIT - IV - Air Compressors and its Performance
UNIT - IV - Air Compressors and its Performance
 
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
 
SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )
 
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
 
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
 
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
Software Development Life Cycle By Team Orange (Dept. of Pharmacy)
 
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICSHARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
 
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
 
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete RecordCCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
CCS335 _ Neural Networks and Deep Learning Laboratory_Lab Complete Record
 
Roadmap to Membership of RICS - Pathways and Routes
Roadmap to Membership of RICS - Pathways and RoutesRoadmap to Membership of RICS - Pathways and Routes
Roadmap to Membership of RICS - Pathways and Routes
 
OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...
OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...
OSVC_Meta-Data based Simulation Automation to overcome Verification Challenge...
 
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur EscortsHigh Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Meera Call 7001035870 Meet With Nagpur Escorts
 
Porous Ceramics seminar and technical writing
Porous Ceramics seminar and technical writingPorous Ceramics seminar and technical writing
Porous Ceramics seminar and technical writing
 
VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130
VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130
VIP Call Girls Service Kondapur Hyderabad Call +91-8250192130
 
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur EscortsHigh Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
 
The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...
The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...
The Most Attractive Pune Call Girls Budhwar Peth 8250192130 Will You Miss Thi...
 

Oral presentation

  • 1.
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. TESTING CONDITIONS TEST # Date Power (W) Pressure (mTorr) Time (min) Power Source (DC/RF) 1 11 May 40 10 60 DC 2 19 May 100 5 90 DC 3 7 June (BILAYER) TOP 100 5 15 DC BOTTOM 40 10 60
  • 9. CHARACTERIZATION RESULTS TEST # Thickness (nm) Adhesion Test Resistance (Ω) 1 50 FAIL (Peeled-off after 7 min) 17.9 2 390 - 400 FAIL (Peeled-off after 5 min) 6.18 3 BILAYER TOP: 385-390 FAIL (Peeled-off after 5 min) 7.8 BOTTOM: 10-15