There's a growing need for physician-scientists who can see from both sides of the table. Miguel Tovar/University of Houston

Physician-scientists are a group of specialized researchers at the intersection of medicine and technology. Earning both medical degrees and Ph.D.s, they offer a perspective beyond the scope of clinical practice.

Three such researchers discussed how they make the connections between discovery and patient care.

Why a dual education matters

Shaun Xiaoliu Zhang, director of the Center for Nuclear Receptors and Cell Signaling at the University of Houston and M.D. Anderson professor of biology and biochemistry, knows exactly what the clinical demands are.

"I can see from the M.D. perspective, but at the same time I have a Ph.D. — I know how to design research properly," he says. "In the clinic, you're faced with reality that a patient is struggling but you don't have the tools to treat those patients. If you engage in research you can create a tool."

Zhang says clinicians know the need but may struggle to design a solution. A Ph.D., on the other hand, may only know basic research.

Renowned hormone researcher Jan-Åke Gustafsson, Robert A. Welch professor of biology and biochemistry and founding director of the Center for Nuclear Receptors and Cell Signaling, agrees.

"The dual education makes it possible for you to see which diseases are in need of more research, drugs and so on," he says.

Physician-scientists are the driving force behind many advances of modern medicine.

"The way I look at it is, practicing medicine is relatively easy but coming up with the next diagnostic device or the next treatment for a disease is way more difficult, way more challenging," says Chandra Mohan, Hugh Roy and Lillie Cranz Cullen Endowed professor of biomedical engineering at UH.

"You see patients with certain diseases, and you know there's a dire need for better diagnostics, earlier treatment, earlier diagnosis with fewer side effects," he says.

While researchers spend time primarily in the laboratory and clinical practitioners interact with patients, they both want to make an impact.

"We have made some discoveries which have led to the development of new drugs and better understanding of certain diseases," says Gustafsson. "There's a great satisfaction that it may help people to get healthy."

Traditional research brings value to a university

The synergy of this dual education makes these investigators valuable not only to academia, but also to medical science.

"I can't imagine doing translational research without medical training," Zhang says. "If you have this part without the other, you don't know where to go. With medical training, you know exactly which direction to go."

Mohan echos that assessment.

"When you start doing research there are so many questions you can answer," he says. "Sometimes there are questions which are just too basic. They're too far removed from how it will impact a patient's life. So what are the most important questions? I think questions that really make a difference in the patient's life are the most important."

Zhang notes that the National Institutes of Health has switched its funding philosophy — once focused on basic science, it now is more interested in translational research, with a direct relationship to patient health.

As physician-scientists, these "translators" of medical research are able to bridge the chasm.

Amr Elnashai, vice president/vice chancellor of research and technology transfer at UH, says physician-scientists play an important role.

"The increasing importance of deploying technology in medicine renders it essential for a progressive research university to hire medical Ph.D. holders who are in an ideal position to bridge the gap between engineering and science on the one hand, and the broad field of medicine on the other," he says.

Research groups that bring both fields together not only have a much higher probability of impacting lives by adopting the latest technology in medical applications, he adds, but they also give interdisciplinary teams greater access to specific funding pursue such solutions.

In that sense, says Elnashai, medical Ph.D. researchers play an important part of the future research university.

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This article originally appeared on the University of Houston's The Big Idea.

Nitiya Spearman is the internal communications coordinator for the UH Division of Research.

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How Houston innovators played a role in the historic Artemis II splashdown

safe landing

Research from Rice University played a critical role in the safe return of U.S. astronauts aboard NASA’s Artemis II mission this month.

Rice mechanical engineer Tayfun E. Tezduyar and longtime collaborator Kenji Takizawa developed a key computational parachute fluid-structure interaction (FSI) analysis system that proved vital in NASA’s Orion capsule’s descent into the Pacific Ocean. The FSI system, originally developed in 2013 alongside NASA Johnson Space Center, was critical in Orion’s three-parachute design, which slowed the capsule as it returned to Earth, according to Rice.

The model helped ensure that the parachute design was large enough to slow the capsule for a safe landing while also being stable enough to prevent the capsule from oscillating as it descended.

“You cannot separate the aerodynamics from the structural dynamics,” Tezduyar said in a news release. “They influence each other continuously and even more so for large spacecraft parachutes, so the analysis must capture that interaction in a robustly coupled way.”

The end result was a final parachute system, refined through NASA drop tests and Rice’s computational FSI analysis, that eliminated fluctuations and produced a stable descent profile.

Apart from the dynamic challenges in design, modeling Orion’s parachutes also required solving complex equations that considered airflow and fabric deformation and accounted for features like ringsail canopy construction and aerodynamic interactions among multiple parachutes in a cluster.

“Essentially, my entire group was dedicated to that work, because I considered it a national priority,” Tezduyar added in the release. “Kenji and I were personally involved in every computer simulation. Some of the best graduate students and research associates I met in my career worked on the project, creating unique, first-of-its-kind parachute computer simulations, one after the other.”

Current Intuitive Machines engineer Mario Romero also worked on Orion during his time at NASA. From 2018 to 2021, Romero was a member of the Orion Crew Capsule Recovery Team, which focused on creating likely scenarios that crewmembers could encounter in Orion.

The team trained in NASA’s 6.2-million-gallon pool, using wave machines to replicate a range of sea conditions. They also simulated worst-case scenarios by cutting the lights, blasting high-powered fans and tipping a mock capsule to mimic distress situations. In some drills, mock crew members were treated as “injured,” requiring the team to practice safe, controlled egress procedures.

“It’s hard to find the appropriate descriptors that can fully encapsulate the feeling of getting to witness all the work we, and everyone else, did being put into action,” Romero tells InnovationMap. “I loved seeing the reactions of everyone, but especially of the Houston communities—that brought me a real sense of gratitude and joy.”

Intuitive Machines was also selected to support the Artemis II mission using its Space Data Network and ground station infrastructure. The company monitored radio signals sent from the Orion spacecraft and used Doppler measurements to help determine the spacecraft's precise position and speed.

Tim Crain, Chief Technology Officer at Intuitive Machines, wrote about the experience last week.

"I specialized in orbital mechanics and deep space navigation in graduate school,” Crain shared. “But seeing the theory behind tracking spacecraft come to life as they thread through planetary gravity fields on ultra-precise trajectories still seems like magic."

UH breakthrough moves superconductivity closer to real-world use

Energy Breakthrough

University of Houston researchers have set a new benchmark in the field of superconductivity.

Researchers from the UH physics department and the Texas Center for Superconductivity (TcSUH) have broken the transition temperature record for superconductivity at ambient pressure. The accomplishment could lead to more efficient ways to generate, transmit and store energy, which researchers believe could improve power grids, medical technologies and energy systems by enabling electricity to flow without resistance, according to a release from UH.

To break the record, UH researchers achieved a transition temperature 151 Kelvin, which is the highest ever recorded at ambient pressure since the discovery of superconductivity in 1911.

The transition temperature represents the point just before a material becomes superconducting, where electricity can flow through it without resistance. Scientists have been working for decades to push transition temperature closer to room temperature, which would make superconducting technologies more practical and affordable.

Currently, most superconductors must be cooled to extremely low temperatures, making them more expensive and difficult to operate.

UH physicists Ching-Wu Chu and Liangzi Deng published the research in the Proceedings of the National Academy of Sciences earlier this month. It was funded by Intellectual Ventures and the state of Texas via TcSUH and other foundations. Chu, founding director and chief scientist at TcSUH, previously made the breakthrough discovery that the material YBCO reaches superconductivity at minus 93 K in 1987. This helped begin a global competition to develop high-temperature superconductors.

“Transmitting electricity in the grid loses about 8% of the electricity,” Chu, who’s also a professor of physics at UH and the paper’s senior author, said in a news release. “If we conserve that energy, that’s billions of dollars of savings and it also saves us lots of effort and reduces environmental impacts.”

Chu and his team used a technique known as pressure quenching, which has been adapted from techniques used to create diamonds. With pressure quenching, researchers first apply intense pressure to the material to enhance its superconducting properties and raise its transition temperature.

Next, researchers are targeting ambient-pressure, room-temperature superconductivity of around 300 K. In a companion PNAS paper, Chu and Deng point to pressure quenching as a promising approach to help bridge the gap between current results and that goal.

“Room-temperature superconductivity has been seen as a ‘holy grail’ by scientists for over a century,” Rohit Prasankumar, director of superconductivity research at Intellectual Ventures, said in the release. “The UH team’s result shows that this goal is closer than ever before. However, the distance between the new record set in this study and room temperature is still about 140 C. Closing this gap will require concerted, intentional efforts by the broader scientific community, including materials scientists, chemists, and engineers, as well as physicists.”

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This article originally appeared on EnergyCapitalHTX.com.