Features
Kat Braz
The Purdue Herbaria

An insider’s look at a university collection so valuable, the professor who built it once stole it back.

The earliest herbarium—a collection of plant samples preserved for scientific study—dates to 16th-century Italy, when the Bologna physician and botanist Luca Ghini (1490–1556) sought to make plant material available to his students in winter when the plants were dead or dormant.

The specimens were flattened between two pieces of paper to remove moisture. Once dried, they were mounted on paper sheets with notations on the plant’s name, where the plant was gathered, and any distinctive features. The pages were bound into volumes to enable transport from one location to another, thus making plant material from faraway places available indefinitely.

The Purdue Herbaria
Features
Kat Braz
A Window into Westwood Manor

The Stewarts at Westwood

Robert Bruce Stewart (HDR M’68), known as R.B., joined the Purdue University staff as controller in 1925. At that time, Purdue enrolled 3,000 students, the physical plant was worth $3 million, and the endowment totaled $340,000.

Stewart, who went on to become the university’s first vice president and treasurer, is credited by many with influencing the character and growth of Purdue University. He spent 36 years building the university both fiscally and physically.

A Window into Westwood Manor
Profiles
Kat Braz
A Story in Stones

Geochemist Marissa Tremblay ’12 analyzes Antarctic rocks to unravel Earth’s climate chronology and predict the planet’s future environment

A geologic field excursion to Death Valley during spring break her first year at Barnard set Marissa Tremblay ’12 on course to becoming a scientist. She entered college intending to pursue a law degree, but stepping foot on that vast, desolate desert landscape marked with sand dunes ignited a curiosity to uncover the stories in stones.

A Story in Stones
Features
Kat Braz
Call of the Wild

50 Years of Wolf Park

Founded by Purdue ethologist Erich Klinghammer in 1972, Wolf Park began as an experiment to study wolf behavior. The pioneering research conducted there over the past 50 years contributed to a better understanding of the apex predator and facilitated its reintroduction into the wild.

Call of the Wild
Profiles
Kat Braz
Come From Away

Twenty Years After 9/11 Longhorn Reflects on the Unexpected Detour—and the Subsequent Broadway Show—that Altered His Life’s Trajectory

On the morning of September 11, 2001, Kevin Tuerff and his then-partner, also named Kevin, were on an Air France flight bound for New York City. The couple had just wrapped up a European vacation and they were eager to get home. A sudden drop in elevation over the Atlantic Ocean was the first sign that something was amiss. Then came an announcement from the cockpit.

Come From Away

Engineering

A Milestone in Machine Learning

A Milestone in Machine Learning

Savoie research team builds largest dataset of reaction mechanisms in existence

Theoreticians have worked in tandem with experimentalists since the dawn of the scientific age. The advent of machine learning facilitated computational work on a larger scale and a faster timetable. While data about the properties of specific molecules has been available for years, predications of how those molecules would react in different environments and under various conditions remained elusive.

After developing the automated computational method YARP — Yet Another Reaction Program — two years ago, a research team led by Brett Savoie, the Charles Davidson Associate Professor of Chemical Engineering, applied YARP’s technology to build the largest dataset of reaction mechanisms in existence.

A Solid Foundation for the Future

A Solid Foundation for the Future

Donation of House Honors Al Altschaeffl, who Contributed to Many Iconic Campus Structures

What do Mackey Arena, Neil Armstrong Hall of Engineering, the Bell Tower and the Gateway to the Future arch have in common? They are among the more than 170 building projects across campus with soil foundations designed by Al Altschaeffl (BSCE 1952, MSCE 1955 PhD 1960), a professor of civil engineer-ing with expertise in geotechnical engineering who continued to consult on projects following his retirement from the University in 2000.

Tree Segmentation

Tree Segmentation

New methodology may one day map forests around the world

What if we could map every tree on the planet?

It’s a question that drives the work of Joshua Carpenter (MS’20), a PhD student and researcher in the Geospatial Data Science Lab supervised by Jinha Jung, Assistant Professor of Civil Engineering.

Just as the field of precision agriculture uses high technology sensor and analysis tools to measure the growth and health of fields of crops, Carpenter is developing methodologies that could one day be similarly applied to forests around the globe.

Hazards Lurk in Fresh-Scented Cleaning Products

Hazards Lurk in Fresh-Scented Cleaning Products

Mopping produces pollutants similar to vehicle emissions

The fresh-scented products used to clean our homes and offices come with risks to our respira-tory health. The chemicals used to create scents such as lemon and pine pollute indoor air with nano-sized particles in similar ways that motor emissions affect the air we breathe outdoors, according to a new study published in the journal Science Advances.

Building a Better Computational Model

Building a Better Computational Model

Physics equations drive optimization of complex engineered systems

Computational models allow researchers to analyze and design complex systems, but development can be a slow process. Leifur Leifsson, associate professor and principal investigator of the Computational Design Lab, uses physics equations to optimize engineered systems for aircraft and space systems as well as microwave systems, nondestructive testing systems and food-water-energy systems.

An Arm for Yaretzi

An Arm for Yaretzi

Telescoping prosthesis enables 10-year-old girl to bow violin

It’s atypical to see a piano as part of a grade school orchestra ensemble, but that’s exactly what Zayra Vincent encountered when she visited the Burgin Elementary School music room this spring. There, in the back of the Arlignton, Texas, classroom, a smiling 10-year-old girl plucked out notes on the keyboard with one finger.

Tech Titans of Silicon Valley

Tech Titans of Silicon Valley

Innovative Boilermakers whose work impacts the daily lives of millions

From his fourth-floor home office perched on so-called Billionaires Row, Keith Krach (IE’79) can see the entirety of the San Francisco Bay and the famous Golden Gate Bridge that spans the strait connecting the bay to the Pacific Ocean. It’s an impressive vista and a far cry from his hometown of Rocky River, Ohio, a Cleveland suburb.