Week 2: Why and How in Engineering Design

Cable Management for iKMC : Designing for Simplicity, Comfort, and Clinical Efficiency

Our first project focuses on developing a cable management system to support integrated Kangaroo Mother Care (iKMC), a lifesaving approach that promotes continuous skin-to-skin contact between mothers and their newborns.

In many hospitals especially those with limited resources the cables connected to monitoring devices and life-support equipment often become tangled or obstruct care, reducing safety and comfort for both mother and infant.

To tackle this challenge, we conducted thorough research and observation, concentrating on:

  • The number, type, and routing of cables used in iKMC environments

  • Existing cable organization solutions and their shortcomings

  • Materials such as fabric, Velcro (Velcro), and support structures suitable for clinical use

Now, in the design phase, we are creating multiple concept models using SolidWorks. These models will be 3D printed for evaluation. Our approach is iterative developing a range of functional prototypes, testing them, and refining the design to achieve the best balance of usability, safety, and comfort.

Some concepts under consideration include:

  • A tray mounted to a support structure or chair to organize and route cables

  • Velcro-based systems that allow flexible attachment and repositioning

  • Cloth pins with cable-holding holes, offering lightweight and reusable solutions

  • A garment-integrated solution with built-in cable channels for wearable convenience

Each concept is designed with clinical workflows, mother-and-child movement, and easy cleaning in mind. We’re excited to move into prototyping and testing in the coming weeks.


Giant Cheetos Machine : Troubleshooting, Testing, and Thermal Observation

Our second project involves troubleshooting a Giant Cheetos extrusion machine that was producing burnt products and frequently jamming.

To better understand the machine’s behavior, we attached three thermocouples along the extruder barrel to monitor temperature changes during operation. We also used a tachometer to measure the motor’s rotational speed.

Key observations include:

  • High friction between the screw and certain dies, causing excessive heat and material blockage
  • Some dies stuck and halted the motor, while others fit better but still failed to produce consistent output
  • A sample mixture of 50% water and 50% grits extruded briefly, but the motor jammed again

From these findings, we identified critical issues:

  • Moisture content in the grits is crucial too little water leads to burning and blockages
  • The 5HP motor running at 3450 RPM is too fast for extrusion and needs to be reduced to a safer speed (350 to 500 RPM)
  • A small gap between the screw and die may contribute to inconsistent material flow

Next steps include:

    • Developing methods to safely control or reduce motor speed
    • Conducting further tests with different moisture ratios to find the optimal mix
    • Making mechanical adjustments to improve screw-die interaction

Beyond the Projects: Cooking Together

Apart from our technical projects, we had a wonderful opportunity to cook and share a meal together with fellow interns. This experience was a great way to strengthen our team spirit and learn the importance of collaboration and communication in a work environment.

Cooking together helped us bond beyond our daily tasks, exchange ideas in a relaxed setting, and recharge from the pressures of work.


Reflection

These past two weeks have reinforced that engineering is not just about building things it’s about deeply understanding real-world problems and solving them with empathy and creativity.

Whether improving cable safety in neonatal care or troubleshooting mechanical and thermal challenges in food extrusion, these projects have strengthened my design, problem-solving, and user-centered thinking skills.

This experience reminds me why I chose biomedical engineering: to create practical solutions that improve lives.

Week 1: My Internship Story at Rice360

My Journey to Rice University: A Grateful Beginning to an Unforgettable Internship

My name is Edward Lowassa Ndonyo, a recent graduate from Muhimbili University of Health and Allied Sciences (MUHAS) in Tanzania, where I earned my Bachelor’s degree in Biomedical Engineering with First Class honors. In addition to my biomedical training, I also have practical experience in electrical installation, CCTV systems and lighting decoration and design. I’m also skilled in Microsoft Office, MATLAB, programming languages like C, C++, Python, JavaScript, as well as HTML, CSS, Django for web development and AutoCAD for electrical design.

📘 Visual overview of my final year project (click to expand Project summary)

Project Title: Management System for Prenatal, Postnatal and Pediatric Clinic

Project Overview:
This project, developed by Edward L. Ndonyo at Muhimbili University of Health and Allied Sciences, presents a comprehensive web-based management system designed to digitize and streamline healthcare services for prenatal, postnatal, and pediatric clinics in Tanzania. The system addresses critical challenges in Tanzania’s manual healthcare system, where over 80% of maternal deaths are attributed to inadequate maternity care and preventable complications.

Problem Statement and Motivation:
Tanzania’s healthcare system currently relies on paper-based record keeping, which creates significant barriers to effective patient care. The manual system suffers from multiple limitations including data accessibility issues, increased vulnerability to errors, difficulty in tracking patient records, challenges in statistical analysis, and inability to implement automated reminders for appointments. With 2.6 million infant deaths annually worldwide (80% preventable) and 800 daily maternal deaths from preventable causes, the need for an efficient digital solution is critical.

System Architecture and Technical Implementation:
The system was developed using Django 4.2 as the backend framework, with HTML5, CSS3, and JavaScript (ES6+) powering the frontend interface. The architecture implements a Relational Database Management System (RDBMS) with carefully designed entity relationships including one-to-many and one-to-one connections between patients, visits, medical records, and healthcare providers.

  • Database Design: Structured to efficiently manage, validate, and secure patient data with unique identifier generation for each child.
  • User Interface: Intuitive web-based interface designed for healthcare providers with minimal technical training.
  • SMS Integration: Infobip API integration for automated appointment reminders and notifications.
  • Analytics Tools: Python-based data processing using Pandas and Matplotlib for visualization and reporting.
  • Task Scheduling: Celery and Celery Beat for managing asynchronous tasks and appointment scheduling.

Core Functionality Includes:

  1. Patient Data Management: Digital profiles for mothers and children with accurate, validated record keeping.
  2. Appointment and Visit Tracking: Automated tracking and SMS reminders to improve clinic attendance.
  3. Automated Notification System: SMS for confirmations, reminders, and follow-ups.
  4. Growth and Development Monitoring: Visual growth charts and vaccination tracking.
  5. Data Analytics and Reporting: Dashboards, regional statistics, and PDF report generation.
  6. Birth Certificate Integration: Generates birth certificate application files with potential for RITA integration.

The images below showcase key aspects of the project, including the system’s workflow, child growth monitoring charts, patient follow-up interface, and a snapshot from the final year project presentation.


This summer, I was honored to be selected as one of the five international interns for the Rice360 Global Health Technologies Internship Program at Rice University in Houston, Texas. This opportunity has been a life-changing step in both my academic and professional journey, a chance to grow, learn, and contribute meaningfully alongside brilliant minds from around the world.

Getting Here: From Tanzania to Texas

Thanks to the generous support of our sponsors and the coordination of the Rice360 team, my travel from Dar es Salaam to Houston was smooth and exciting. I departed on June 4, 2025, and after a brief connection in Amsterdam, I arrived in Houston on June 5. The following day, we were warmly welcomed with a wonderful group lunch alongside the other international interns, Michelle, and other team members. That same day, we toured the Rice campus to get familiar with the university, a beautiful and inspiring place that would become our new workspace.


Exploring Houston

On June 7, we had a chance to explore the city. We visited the Houston Zoo and Hermann Park, where we bonded as a group and enjoyed our first real weekend in this new environment. It was the perfect way to relax and prepare for the exciting work ahead.


The SEED Program Begins

The official kickoff of the internship program, SEED (Summer Experience in Engineering Design), took place on June 9. We were introduced to our wonderful supervisor, Dr. Kevin Holmes, and received an overview of the projects we’d be tackling over the summer. Representatives from our client organization joined us to present real-world problems in global health that required innovative solutions.

The next day, we were divided into teams, and I was assigned to a group working on two fascinating projects:

  • Cable Management in iKMC (improved Kangaroo Mother Care) – focused on organizing and securing cables for medical devices in neonatal care settings.
  • Giant Cheetos Machine – a creative engineering challenge to build a fun, interactive mechanism inspired by Cheetos snacks.

Design Thinking in Action

From June 11 to June 13, we dedicated our time to brainstorming, conducting deep research, and making direct observations to understand each project from all angles. We discussed feasibility, user needs, potential constraints, and worked toward identifying the most effective and impactful solutions. It was intense but fulfilling work, exactly what I hoped for from this internship.


💖 A Heartfelt Thank You to Mr. Kamal and Mrs. Eleanor Shah

None of this would be possible without the generous support of my sponsors, Mr. Kamal and Mrs. Eleanor Shah, who made this internship a reality for me. Your investment in global health and education is having a direct and meaningful impact. I am truly grateful for the opportunity to learn, grow, and contribute in such a world-class environment. Your support is not only helping shape my future, but also the lives of those I aim to serve through biomedical innovation

Technical Triumphs and Team Adventures: A Look Back at Weeks 4-6 of My Internship at OEDK

Hello Everyone!

Welcome back to my blog! I’m Alinafe, and I’m excited to share with you the highlights and experiences from Weeks 4 through 6 of my internship at OEDK. These weeks have been filled with technical challenges, exciting adventures, and memorable events that have shaped my learning journey. Let’s dive into what we accomplished and experienced during this time!

 

Week 4: Gel Modification and Prototype Development

  1. Gel Modification Methods

This week, our main focus was on enhancing the gel used for imaging by modifying its properties to improve its performance.

Unfortunately, this DIY approach didn’t work as planned, leading us to order a commercial air pump .

commercial pump
commercial pump

Despite our efforts, the commercial pump also failed to achieve the desired results.

    • Next, we used a syringe to modify our gel . While this method was somewhat effective, it did not gave us required results.
    • syringe method

  • Electric Stirrer Success:
    • Our breakthrough came with the use of an electric stirrer, which proved to be the most effective method for creating small, uniform bubbles in the gel (Figure 5). This tool allowed us to achieve the precise bubble size we needed for our project, marking a significant step forward.
  1. Prototype Development
  • Testing and Iteration:
    • We created test prints and models using different materials to evaluate their effectiveness ). While Material A  and B did not work as expected, Material C demonstrated clear imaging results, which was a promising development for our project
      Test print model
      Test print model
      Model with material B
      Model with material B

      A Fun Break: Houston Zoo Visit

      During a busy week, we took a break and visited the Houston Zoo:

      • Exploring the Zoo:
        • We saw lions, monkeys, colorful birds, and many other animals. It was a fun and relaxing way to take a break from work.
      • Learning About Animals:
        • We learned about animal conservation and the zoo’s efforts to protect endangered species.
      • Team Fun:
        • It was a great chance for us to relax, enjoy the day together, and share our favorite animals.
        • The zoo

       

       

Week 5: Testing, Reflection, and Client Engagement

This week was a bit quieter due to the Independence Day holiday, offering us time for reflection and preparation for the next stages of our project.

  1. Testing and Client Interaction
    Model creation
    Model creation
  • Model Testing Outcome:
    • We had a meeting to test our models and found that Material A and B did not yield satisfactory results. However, Material C showed potential, leading us to focus on refining this material
  • Client Collaboration:
    • Our client was responsive and supportive throughout Week 5 and Week 6. Their timely feedback and availability for discussions helped us navigate challenges effectively and stay on track with our project goals.
  1. Team Building Activities
  • Bike Ride Adventure:
    • Led by Professor Nodskov, we enjoyed a 3-mile bike ride from the bike shop to the post and back. It was a great and fun opportunity to bond with my team members, enjoy the outdoors, and take a break from our usual routine.
      Bike ride moments
  • Ice Skating Fun:
    • Our team went ice skating at Galleria Mall, organized by Brooke and Rohan . We started off wobbly on the ice but ended up having a fantastic time as we learned to skate and cheered each other on. It was a fun and memorable experience for all of us.
      Beautiful moments

Week 6: Final Model Refinement, Challenges, and NASA Visit

Week 6 was crucial for finalizing our model and dealing with unexpected challenges, including the effects of Hurricane Berly.

  1. Final Model Preparation and Hurricane Impact
  • Model Refinement and Testing:
    • We focused on perfecting our final model for gel testing, making necessary adjustments and conducting thorough tests to ensure it met all specifications.
  • Hurricane Berly Disruption:
    • Hurricane Berly caused significant disruptions, including power outages for off-campus students . While our project materials remained safe, the storm impacted communication and work schedules, challenging us to adapt and find solutions.
  1. Inspiring Visit to NASA
  • NASA Exploration:
    • We visited NASA’s Johnson Space Center led by Rohan and Renee, where we explored fascinating exhibits. Highlights included:
      • Spaceships and Rockets: We saw detailed models of historic and current spacecraft, including Apollo missions and Mars rovers.
      • Mission Control Centers: We got a behind-the-scenes look at the control rooms used for managing space missions.
      • Astronaut Exhibits: We viewed real spacesuits and learned about astronaut training and experiences.
      • Presentations: We attended talks from NASA experts and astronauts, gaining insights into space exploration’s history and future goals .
        One of the interesting things we saw

Conclusion

These past three weeks have been transformative, combining technical progress with team bonding and inspirational experiences. We tackled challenges in gel modification, refined our prototype, and navigated the disruptions caused by Hurricane Berly. Our adventures included a fun bike ride, an enjoyable ice skating session, and an inspiring visit to NASA.

Thank you for following along on this journey, and I look forward to sharing more insights with you soon!

 

Exploring New Horizons: My OEDK Internship Experience

Greetings from Houston! 🌟

I’m Penina Macha, a third-year Computer Engineering student from Dar es Salaam Institute of Technology. A week ago, I stepped off a plane into the heart of Texas to start my internship at Rice University’s Oshman Engineering Design Kitchen (OEDK). Surrounded by cutting-edge technology and innovative projects, my first week has been an exhilarating blend of learning and discovery. Let’s dive into this adventure together!

Martel CollegeInternsInterns

Embarking on my first international journey, I was at the prestigious Rice University in Houston, USA. This opportunity was a significant milestone in my academic and personal life. The first week was very eye-opening, I got to see new things, meet new people, and experience being in a new environment. To my surprise summer isn’t just about the heat but also unexpected rainfall and longer days where the sun just won’t set until it’s 8 pm 😂.

I immediately fell in love with the campus of Rice University, it has amazing scenery and its buildings are simply perfect to fulfill any student’s needs and more. The OEDK, known for fostering creativity and innovation, was everything I had imagined and more. The facility is loaded with small tools to large equipment that can be used in engineering and design, truly the environment is a haven for any aspiring engineer. From 3D printers to advanced prototyping equipment, the resources available here are vast. This is undeniably an engineer’s playground where all the creativity and innovation happens and new technologies are born.

On Monday, we were introduced to various projects, and I was immediately drawn to a health-related topic that caught my interest: the Artemis High Flow Nasal Cannula. This device, essential for respiratory support promised a challenging yet rewarding exploration into the intersection of engineering and healthcare. As I delve deeper into the project on the Artemis High Flow Nasal Cannula, the potential impact of our work becomes increasingly clear. This device, crucial for patients requiring respiratory support, is a testament to how engineering can make a tangible difference in healthcare. The prospect of contributing to such a meaningful project is both humbling and exhilarating.

Collaboration and Mentorship
One of the standout aspects of my first week was the collaborative spirit and the mentorship available. The OEDK fosters a culture of teamwork, and I had the privilege of working alongside talented peers and mentors who are experts in their fields. I am happy to work alongside Dr. Kevin Holmes, our Research Supervising Professor, and Michelle Nodskov, our Education Programs Coordinator not forgetting our Team Leads Shifan Liu and Renee Wrysinski who together make our Internship experience incredibly enriching.

Reflections and Aspirations
Reflecting on my first week, I am filled with gratitude for this incredible opportunity. The exposure to advanced engineering practices, the collaborative environment of students from 4 different countries in Africa together with Rice University students, and the cultural experiences have already begun to shape my aspirations and broaden my horizons. I am eager to continue this journey, delve deeper into the project, and embrace the learning and growth that lie ahead.

Conclusion
The first week at Rice University’s Oshman Engineering Design Kitchen has been a whirlwind of new experiences, learning, and inspiration. From the initial introduction to the Artemis High Flow Nasal Cannula project to exploring the vibrant city of Houston, every moment has been enriching. As I move forward, I am excited about the possibilities and the knowledge that this unique opportunity will bring.

Stay tuned for more updates as I continue to navigate this incredible journey of innovation and discovery!