David Cullen

Jan 19, 2025 | trucknews.com | David Cullen

In a stunning but logical move, the California Air Resources Board (CARB) on Jan. 13 withdrew its request for a statutory waiver from the U.S. EPA that CARB would have required to implement its game-changing Advanced Clean Fleets (ACF) rule.

Nov 19, 2024 | trucknews.com | David Cullen

Elected again to the presidency of the U.S., Donald Trump wasted no time making good on campaign promises by rapidly rolling out most of his picks for key Cabinet positions by Nov. 13, barely a week after the polls closed. American voters gave the Republicans a trifecta of victory: Trump will take office next year with his party controlling both the House and the Senate. This will mark the first time Republicans have had full control of Congress and the White House since 2018.

Oct 26, 2024 | scholarsarchive.byu.edu | David Cullen |Richard R. Vanfleet |Brigham Young

Keywordsfingerprinting, aluminum oxide, electron energy-loss spectroscopy, EELSCollegePhysical and Mathematical SciencesDepartmentPhysics and AstronomyAbstractThe alpha, gamma, and kappa phases of aluminum oxide were analyzed using transmission electron microscopy. Micro- and nano-powders of alpha and gamma alumina were donated by Dr. Bartholomew of the BYU Chemical Engineering Department and Alpha Aesar.

Sep 7, 2024 | truckinginfo.com | David Cullen

We spoke at length with Lane Kidd, managing director of the Washington, D.C.-based Alliance for Driver Safety & Security (known as the Trucking Alliance) about which issues the carrier-driven and safety-focused lobbying group is most engaged with this year, from the ELD mandate to younger drivers. The interview was lightly edited for length and clarity. HDT: To help set the stage, can you tell us about the Trucking Alliance, its membership, and its stated mission?

Aug 22, 2024 | nature.com | Longsheng Cao |Fernando Soto |Dan Li |Tao Deng |Enyuan Hu |David Cullen | +3 more

AbstractHydrogen oxidation reaction in alkaline media is critical for alkaline fuel cells and electrochemical ammonia compressors. The slow hydrogen oxidation reaction in alkaline electrolytes requires large amounts of scarce and expensive platinum catalysts. While transition metal decoration can enhance Pt catalysts’ activity, it often reduces the electrochemical active surface area, limiting the improvement in Pt mass activity.