Info for
    • Future Students
    • Current Students
    • International Students
    • Indigenous Students
    • Professional and Part-time Learning
    • Guidance Counsellors
    • Parents
    • Employers & Partners
    • Alumni
    • Media
    • Faculty
Quick links
    • DC Connect
    • DC Mail
    • MyDC - students
    • MyCampus - employees
    • DC Apps
    • Full-time programs
    • Durham Lords
    • Campus Safety
    • Library
    • Online Learning
    • Notice of Service Disruption
    • Interactive Campus Maps
    • Locations

Download our Mobile app
Icon for Apple. App Store Icon for Android. Google Play
  • Campus Status
  • Ask DC
  • Land Acknowledgement
  • Campus Status
  • Medical icon for DC Are you Ok support services. Are you okay?
      • DC Connect
      • DC Mail
      • MyDC - students
      • MyCampus - employees
      • DC Apps
      • Hired
Menu
  • Medical icon for DC Are you Ok support services. Are you okay?
  • Campus Tour
  • Donate
  • Hire
  • Quick Links
    • DC Connect
    • DC Mail
    • MyDC - students
    • MyCampus - employees
    • DC Apps
    • Hired
  • Apply Now
    • Domestic icon Domestic application
    • International icon International application
Durham College logo
  • Programs and Courses
    • Full-Time Programs
    • New Programs for 2022
    • Programs for International Students
    • Bachelor’s Degrees
    • Graduate Certificate Programs
    • Fast-Track Programs
    • Co-operative Education Programs
    • Diploma to Degree Business Programs
    • Weekend delivery programs
    • Better Jobs Ontario Programs
    • Professional and Part-Time Learning
    • Online Learning Offerings
    • Corporate Training Services
    • Academic Upgrading
    • School College Work Initiative
    • Pathways: Further Your Education
    • Experiential Learning
    • Apprenticeships
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • Admissions
    • How to Apply
    • Admission Process
    • Admission Requirements
    • Important Dates
    • Credit Transfer
    • International Students
    • Transfer Options
    • Contact Admissions
    • Prior Learning Assessment and Recognition (PLAR)
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • Financial Info
    • Tuition and Fees
      • Program Fee Calculator
      • Other Fees to Consider
      • How to Pay
      • Withdrawals and Refunds
    • Financial Aid
      • OSAP
      • Scholarships, Bursaries and Awards
    • Financial Planning/Counselling
    • Program Fee Calculator
    • Budget Calculator
    • On-Campus Employment
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • Student Life
    • Campus Services
      • Campus Safety
      • Parking Information
      • Lockers
      • Campus Store
      • Test Centre
      • Computer Support
      • Sport and Recreation Services
      • Esports Gaming Arena
      • Food Services
      • Campus-ID/U-Pass
      • Study Spaces
      • Shop DC
    • Get Involved
      • Campus Emergency Response Team (CERT)
      • Campus Walk Program
      • Durham College Student Association (DCSA)
      • Esports Arena
      • Fast Start
      • Institute of Student Leadership (ISL)
      • Intramurals and Extramural Sports
      • Peer Tutoring
      • Research
      • Riot Radio
      • Working on Campus
    • Health and Wellness
      • Campus Health and Wellness Centre
      • Dental Clinic
      • Fine Motor Clinic
    • Student Services
      • First Peoples Indigenous Centre
      • Career Development
      • Access and Support Centre
      • Library
      • Office of the Registrar
      • Student Academic Learning Services (SALS)
      • Athletics
      • Durham College Student Association
      • Diversity
      • DC Pride Collective
      • Student Advisors
      • Co-operative Education (Co-op)
      • Outreach Services
      • Housing
      • Rights and Responsibilities
      • Peer Wellness Coaching
      • RISE (Reach, Include, Support and Elevate)
    • Support Services
    • Orientation
    • Social Media Hub
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • International
    • Study @ DC
      • International Programs
      • How to Apply
      • English Language Requirements
      • Admission Requirements by Country
      • Admission Information
      • Diploma-to-Degree Pathway Programs
      • Financial Information
      • Scholarships
    • New and Current Students
      • Arrival Guide
      • NEW International Students Guide
      • Health Insurance and Health Care
      • Transfer options
      • Housing
      • Student Support
      • Visas and Permits
      • Tax Information
    • Agents
    • Education Abroad
    • Global Projects and Partnerships
    • Contact us
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • About
    • Academic Schools
    • Accessibility
    • Anti-Black Racism Statement
    • College Quality Assurance Audit Process (CQAAP)
    • Community and Government Relations
    • DC at a Glance
    • EaRTH District
    • Giving to DC
    • Governance
    • History
    • Indigenization Statement
    • Land Acknowledgement
    • Mission, Vision and Values
    • Office of Research Services, Innovation and Entrepreneurship (ORSIE)
    • Performance Indicators
    • Program Advisory Committees
    • Services for Businesses
    • Strategy, Plans and Publications
    • Whitby Campus
    • Menu Item
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • Contact
    • Contact DC
    • DC on Social Media
    • Feedback
    • Live Chat
    • Locations
    • Staff Directory
    • Vendor Contact Information
    Explore
    Programs

    View programs

    • Icon of a directory. Contact student Recruitment
    • Icon of a book. Durham College Viewbook
    • Icon of a globe. International Viewbook
    • Icon of a directory. Contact Admissions
    • Icon of a clipboard. How to Apply
    • Icon of a calendar. Important Dates
    • Icon of an award and currency. Scholarships and Bursaries
    • Icon of a hand and currency. OSAP information
    • Icon of a calculator. Program Fee Calculator
    • Icon of a megaphone. MyDC - students
    • Icon of a laptop computer. DC Connect
    • Icon of a smartphone. DC Mobile App
    • Icon of a briefcase. Employment Opportunities
    • Icon of the Hire a co-op student. Hire a co-op student
    • Icon of the DC logo. Strategic Plan
    • Icon of a globe. International Programs
    • Icon for How to apply. How to apply
    • Icon of a megaphone. FAQs
    • Icon of a smartphone. DC Mobile App
    • Icon of a GPS device. Interactive Campus Map
    • Icon of a map marker. Locations

    Spring Programs
    and Courses

    View Calendar
    PPL course catalogue cover
    • This Month’s Highlights

    • Medical Cannabis Essentials for Health Professionals
    • Joint Health and Safety Committee (JHSC) Certification
    • Pathways to Early Childhood Education
    • All FAQs
    • OSAP Eligibility
  • Programs and courses
  • Admissions
  • Financial Aid
  • Student Life
  • International
  • About
  • Contact
  • Apply
  • Ask DC
  • Land Acknowledgement
  • DC Mobile
  • Explore DC
  • Home
  • Programs
  • Mechanical Engineering Technician – Non-Destructive Evaluation (fast-track)

Mechanical Engineering Technician – Non-Destructive Evaluation (fast-track)


Featured image for program.
Credential
Ontario College diploma
Location
Oshawa
OCAS Code
NDEF
Next Intake
September 2022
View all intakes
School
School of Science & Engineering Technology (SET)
Length
Two semesters
Delivery
This program may be delivered in an alternative format. Learn more
Featured image for program.
  • Overview
Apply Now
  • Domestic icon Domestic application
  • International icon International application
  • Overview
  • Program Details
  • Admission Requirements
  • Courses
  • Costs
  • Career Options
  • Transfer
  • Tech recommendations
  • Book a tour
  • Connect with us
  • Apply Now
    • Domestic icon Domestic application
    • International icon International application
  • Overview
  • Program Details
  • Admission Requirements
  • Courses
  • Costs
  • Career Options
  • Transfer
  • Tech recommendations
  • Book a tour
  • Connect with us

Program Overview

This program is designed specifically for applicants with existing academic credentials, students with a degree in a related field can expand their knowledge of the non-destructive evaluation (NDE) industry and complete an advanced diploma in fewer semesters. Students learn about materials and specific testing methods in order to examine cars, trains, airplanes, spacecraft, towers, bridges, ships, power plants and amusement park rides to identify and analyze possible defects.

With training and education in non-destructive evaluation you will be well-prepared to begin your career in industry to test and evaluate components for internal or external flaws, using ultrasonic, radiographic, magnetic and many other methods, allowing people to live and work in a safe environment.

As a graduate, you will become an integral part of assuring the safety and integrity of our infrastructure, components and structures that are built or are in service in our society.

Intakes and Availability

Date Domestic Availability International Availability
September 2022OpenOpenApply now
ProgramHighlights
  • DC Experience
  • Success Stories
  • Resources
  • DC Experience
  • Success Stories
  • Resources
Play
Slider
DC supporting Ontario’s workforce in acquiring in-demand skills with new micro-credential
Durham College 2022 Viewbook
Go Green
2022 Viewbook
Read Now
Other Resources
  • Graduate Employment Report [PDF]
  • Attend a Program Information Webinar
  • Financial Aid Information
Hands On
Inspection
Attention to Detail

Admission Requirements

  • Ontario Secondary School Diploma (OSSD) or Mature Student Status
  • Grade 12 English (C or U)
  • Grade 12 Mathematics (C, M or U)

To be considered for the fast-track (credit transfer) pathway a specific educational background is required as follows:

  • Degree or diploma in either mechanical engineering, electrical engineering, material science or physics completed within the last five years
  • One post-secondary physics course
  • One post-secondary calculus course
  • One post-secondary statistics course
  • One post-secondary electricity course
  • Proof of English Language Proficiency 
  • Additional information may be requested to demonstrate practical lab experience

International applicants should contact the International Admissions office for information about the application requirements.

Tuition

  • Year one domestic: $2,974 (CAD)
  • Year one international: $14,438 (CAD)

View full costs

Semester 1 Courses

  • Metallurgy for Non-Destructive (METL 1132)
  • Introduction to Non-Destructive Testing (NDTE 1100)
  • Non-Destructive Testing- Liquid Penetrant (NDTE 1102)
  • Non-Destructive Testing- UT Ultrasonic I (NDTE 3101)
  • Visual Testing (VISU 3100)

View all courses

Hands On
Hands On
Inspection
Inspection
Attention to Detail
Attention to Detail

Technology recommendations

To help students succeed in programs with remote learning requirements, Durham College’s IT Services department has identified minimum technology recommendations. While these are not program requirements, these suggestions will help ensure students have the right tools to support a quality remote learning experience.

View all recommendations

Career Options

WHAT YOU COULD BE:

  • Non-destructive testing inspector
  • Non-destructive testing analyst
  • Integrity and reliability inspector and specialist
  • Quality assurance and/or control lead
  • Non-destructive testing system designer
  • Pipeline inspector
  • R&D specialist
  • Welding inspector

View all career options

Connect with us

Program related questions?

Email
Live Chat

Application related questions?

Email
Live Chat

International Students

Email
Live Chat
905.721.2000 ext. 7697

Domestic students

905.721.3000

Connect with us

Program related questions?

Email
Live Chat

Application related questions?

Email
Live Chat

International Students

Email
Live Chat
905.721.2000 ext. 7697

Domestic students

905.721.3000

Program Details

If you are a domestic or internationally educated professional with a Bachelor of Science (BSc) degree, you may be eligible for a compressed, fast-track opportunity to complete your diploma requirements in two semesters.

This program will provide you with the training and hands-on experience necessary to begin a career in non-destructive evaluation/testing (NDE/NDT). In combination with your degree those skills will allow for you to assess the data collection from the inspections and provide reports to senior management.

NDT inspectors engage in the examination and testing of cars, trains, airplanes, space craft towers, bridges, ships, power plants, amusement park rides etc. You will learn how to examine these objects without causing damage or impairment to their future use, hence the term non-destructive. You will also learn how testing in this fashion is used to detect possible internal or external defects and examine the properties of the object.

At the end of the program, you will be eligible to take method-specific certification exams regulated by the Canadian General Standards Board if you have 70 per cent or better in the related NDT courses.

Program Learning Outcomes

  1. Complete all work in compliance with current legislation, standards, regulations and guidelines.
  2. Apply quality control and quality assurance procedures to meet organizational standards and requirements.
  3. Comply with current health and safety legislation, as well as organizational practices and procedures.
  4. Apply sustainability best practices in workplaces.
  5. Use current and emerging technologies to support the implementation of mechanical engineering projects.
  6. Analyze and solve mechanical problems by applying mathematics and fundamentals of mechanical engineering.
  7. Interpret, prepare and modify mechanical engineering drawings and other related technical documents.
  8. Contribute to the design and the analysis of mechanical components, processes and systems applying fundamentals of mechanical engineering.
  9. Manufacture, assemble, maintain and repair mechanical components according to required specifications.
  10. Verify the specifications of materials, processes and operations to support the design and production of mechanical components.
  11. Contribute to the planning, implementation and evaluation of projects.
  12. Develop strategies for ongoing personal and professional development to enhance work performance.

Admission Requirements

  • Ontario Secondary School Diploma (OSSD) or Mature Student Status
  • Grade 12 English (C or U)
  • Grade 12 Mathematics (C, M or U)

To be considered for the fast-track (credit transfer) pathway a specific educational background is required as follows:

  • Degree or diploma in either mechanical engineering, electrical engineering, material science or physics completed within the last five years
  • One post-secondary physics course
  • One post-secondary calculus course
  • One post-secondary statistics course
  • One post-secondary electricity course
  • Proof of English Language Proficiency 
  • Additional information may be requested to demonstrate practical lab experience

International applicants should contact the International Admissions office for information about the application requirements.

Courses

The courses listed below are for incoming students. If you are a current student, please refer to your program of study for the year you began your program. Your program of study can be found on MyDC.

Semester 1

  • Metallurgy for Non-Destructive (METL 1132)
  • Introduction to Non-Destructive Testing (NDTE 1100)
  • Non-Destructive Testing- Liquid Penetrant (NDTE 1102)
  • Non-Destructive Testing- UT Ultrasonic I (NDTE 3101)
  • Visual Testing (VISU 3100)

Semester 2

  • topics In Nde (METO 4200)
  • Non Destructive Testing - Magnetic Particle (NDTE 2101)
  • Non-Destructive Testing - Ultrasonic II (NDTE 3102)
  • Non Destructive Testing - Eddy Current (NDTE 4101)
  • Radiography & Radiation Safety (RAD 4101)

Courses and course descriptions are subject to change. Please note that as a result of COVID-19 the 2022-23 program of study may be modified to accommodate program delivery changes.

Costs

Career Options

WHAT YOU COULD BE:

  • Non-destructive testing inspector
  • Non-destructive testing analyst
  • Integrity and reliability inspector and specialist
  • Quality assurance and/or control lead
  • Non-destructive testing system designer
  • Pipeline inspector
  • R&D specialist
  • Welding inspector

WHERE YOU COULD WORK:

  • Aerospace, automotive, transportation and manufacturing companies
  • Defense and military
  • Power generation and utilities
  • Oil, gas and petrochemical companies
  • Service and inspection companies
  • NDE equipment manufacturing

Program Transfer, Degree Completion and Additional Credentials

Graduates may also be eligible to apply their academic credits toward further study through Durham College’s partnerships with many Canadian and international colleges and universities.

Technology Recommendations

To help students have the best remote learning experience possible, Durham College’s IT Services department has identified technology recommendations for each program based on course needs and software requirements. While not required, students may want to consider these suggestions if they are purchasing a computer or laptop for the upcoming academic year.

Processor: i7
RAM: 16GB
Storage: 256GB SSD
Operating System: Microsoft Windows 10 Professional or Education x64 SP1
Internet Browser: Internet Explorer 11 or Google Chrome (newest version) or Firefox (newest version)
Network Adapter: 802.11ac 2.4/5 GHz wireless adapter
Camera: Webcam/built-in camera
Internet connection

Questions regarding technology recommendations can be directed to the IT Service Desk  or the school office.

Land Acknowledgement

Durham College is situated on the traditional lands of the First Peoples of the Mississaugas of Scugog Island First Nation. These lands are covered under the Williams Treaties and rest within the traditional territory of the Anishinaabeg. We offer our gratitude to the Indigenous Peoples who care for and, through the treaty process, share the lands on which we live, learn, teach and prosper today.

Photo icon

Many of the photos on this website were taken prior to the COVID-19 pandemic.

  • Future Students
  • Current Students
  • International Students
  • Indigenous Students
  • Professional and Part-time Learning
  • Alumni
  • Parents
  • Employers & Partners
  • Guidance Counsellors
  • Media
Oshawa Campus

2000 Simcoe St. N.
Oshawa, ON, Canada L1G 0C5

Whitby Campus

1610 Champlain Avenue
Whitby, ON, Canada L1N 6A7

905.721.2000
dccares@durhamcollege.ca
Campus Maps

  • Hire a Student
  • Careers at DC
  • Giving to DC
  • Ask DC
  • Staff Directory
  • Smoke-free Campus
Accessibility |  Legal & Privacy
  • Notice of Service Disruption
  • Info Centre for Employees (ICE)
  • Centre for Teaching and Learning
  • Anti-Black Racism Statement
  • Indigenization Statement
  • Land Acknowledgement
Copyright Durham College 2022
GTA Top Employer
Greenest Employer
Top Researcher