D. Joe Irvine 🇨🇦 (@DJoeIrvine) header
D. Joe Irvine 🇨🇦 (@DJoeIrvine) profile picture

Technology Development and New Ventures; Commercialization of Innovation; retired from uOttawa; new landscape painter; cottager 🇨🇦

Ottawa
Joined August 2009
Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)Photo by D. Joe Irvine 🇨🇦 (@DJoeIrvine)
D. Joe Irvine 🇨🇦 retweeted
Please enjoy my cartoon for Thursday's @TorontoStar
134
917
40
3,203
31,749
D. Joe Irvine 🇨🇦 retweeted
I think Picard fixed the timeline.
235
1,912
130
14,518
180,628
D. Joe Irvine 🇨🇦 retweeted
📢 Announcing the recipients of the 2026 AGE-WELL Honorary Fellow Award: Olive Bryanton, Rich McAloney & Frank Knoefel. This award recognizes members who have made substantial contributions to research and/or innovation in the #AgeTech sector & to AGE-WELL. Congratulations! 🎉
2
5
126
D. Joe Irvine 🇨🇦 retweeted
I'm a cardiologist. Back against the kitchen wall, knees bent, two minutes. Rest. Four times. In a 100-person randomized trial, doing that 3 days a week for 4 weeks lowered systolic pressure about 9 points more than in people who didn't. Save this one.
Four weeks of wall squats reduced systolic blood pressure by nearly 10 points in adults with high blood pressure. Researchers then compared continuing three sessions weekly with reducing to two, one, or none for another month. Systolic pressure remained roughly 7 mmHg below starting levels in the once- and twice-weekly groups. Continuing three sessions weekly produced the greatest reduction of about 14 mmHg. In those who stopped completely, blood pressure moved back toward baseline. This fits with a previous analysis of randomized trials that identified isometric exercise, which involves holding a muscle contraction, as an effective way to lower resting blood pressure. What interests me is the practical question - how much of an exercise benefit can we preserve when we temporarily have less time? This study suggests that reducing the frequency can retain part of the benefit for up to a month.
186
2,757
58
26,450
1,221,283
D. Joe Irvine 🇨🇦 retweeted
Mac Hughes finishes T4 with an impressive 19-under performance at the VidantaWorld Mexico Open! Let's go, @MacHughesGolf 💪
2
3
1
70
2,501
D. Joe Irvine 🇨🇦 retweeted
Toronto went all out this year for Halloween 🎃
70
635
62
3,041
171,806
D. Joe Irvine 🇨🇦 retweeted
This wins Halloween
162
1,443
83
10,076
317,541
D. Joe Irvine 🇨🇦 retweeted
Happy Halloween!! 🎃 👻
39
32
3
1,250
103,784
D. Joe Irvine 🇨🇦 retweeted
🗞️ #NSERC research story: New @uOttawa & @CHEO Research Institute study sheds light on how motor control develops. A big step, identifying the neural changes behind motor control by observing zebrafish go from clumsy swimmers to graceful gliders. Read▶️ tinyurl.com/44ubrfze
3
8
885
D. Joe Irvine 🇨🇦 retweeted
SIR PATRICK STEWART (1940-2026) Before everything else, Patrick was defined by being born and bred in Yorkshire, the proud county in the north of England which he loved to the end. You could hear it in his accented voice and in the stern honesty with which he told you what he thought and felt. Yorkshiremen have no truck with half-truths or avoidance of big issues. He wore his heart on his sleeve, which made him a man to rely on, to admire and in my case, love. We first met as ambitious young actors with the Royal Shakespeare Company half a century ago but we weren’t in the same productions. My first strong memory was a few years later, meeting him in the street in central London when he told me about an offer to take over a leading part in 'Star Trek'. “But Patrick think of your stage career in the UK. Do you really want to risk—getting lost in Hollywood for years and years?”. Well, he took the risk and thank goodness for us all that he did for not just his devoted Trekkies but film and theatre audiences, who marvelled at his using international celebrity to star in a string of cinema successes ('X-Men' of course) and in great classical plays by Shakespeare, Ibsen, Arthur Miller, Peter Shaffer, Pinter and Beckett at Stratford-upon-Avon, in London’s West End and on Broadway. America was his adopted home, where he met his adored Sunny who has cared for him through sickness and health, through thick and thin. But he never forsook his origins: and the proudest achievement of the most respected and beloved actor of his generation on either side of the Atlantic, was his appointment as Chancellor of Huddersfield University in Yorkshire. His farewell performance in 'Avengers: Doomsday' is yet to be seen. Ian McKellen 29 October 2026 Photo: University of Huddersfield
3,370
91,996
4,325
474,730
6,887,687
D. Joe Irvine 🇨🇦 retweeted
In lieu of flowers, memorial contributions may be made to: Johns Hopkins Alzheimer’s Disease Research Center Fund    alzresearch.org/giving/ Alzheimer’s Foundation of America Caregiver Resources     alzfdn.org/donate/ Photo Credit: Tommy Garcia
6,676
79,737
17,356
345,521
11,822,734
D. Joe Irvine 🇨🇦 retweeted
UPDATE: We are able to expand eligibility for No Limit to university students in the U.S. and Canada. (Plus recent grads from ’25 or ’26.) Apply to the closest regional event. Registration now open.
Announcing No Limit: a bot building tournament hosted by @Sequoia, @citsecurities and @OpenAI. Teams of 1 or 2 get 60 minutes to build a pokerbot from scratch. Agents play thousands of games across six scored rounds. Open to university students and recent grads (‘25 or ‘26). Regionals in Boston, Pittsburgh and the Bay Area in early November. Top five teams from each fly to the Finals. $100K grand prize.
12
18
8
310
99,359
D. Joe Irvine 🇨🇦 retweeted
Please enjoy my cartoon for Tuesday's @TorontoStar
64
894
39
2,908
32,684
D. Joe Irvine 🇨🇦 retweeted
Obama: The big trade war Trump started now is with that well-known evil empire... Canada! I mean, these are the people who gave us maple syrup and Martin Short. They're the nicest people! And he's picking a fight with them.
18
321
16
1,344
40,676
D. Joe Irvine 🇨🇦 retweeted
He was Satyendra Nath Bose, an Indian physicist whose quiet brilliance in the 1920s forever altered our understanding of the quantum world. In 1924, Bose, then a 30-year-old professor in British India, sent a groundbreaking manuscript directly to Albert Einstein. The paper offered a novel, more elegant derivation of Planck's law for blackbody radiation by treating light quanta (photons) as indistinguishable particles—a radical departure from classical statistical methods. Impressed by its insight, Einstein personally translated the work into German and facilitated its publication in the prestigious Zeitschrift für Physik. This exchange sparked a brief but profound collaboration. Einstein extended Bose's statistical approach to material atoms, predicting a bizarre new state of matter at ultra-low temperatures: what we now call a Bose-Einstein condensate (BEC), where particles behave as a single quantum wave. Bose's original framework became known as Bose-Einstein statistics, and the class of particles that obey it—those with integer spin, including photons, gluons, W and Z bosons, and the Higgs boson—was later named bosons in his honor by Paul Dirac. Unlike fermions (matter particles like electrons), which obey the Pauli exclusion principle and cannot occupy the same quantum state, bosons can pile into identical states en masse. This "social" behavior underpins extraordinary macroscopic phenomena: the coherent light of lasers, the zero-resistance flow in superconductors, and the collective quantum coherence in BECs. Despite the monumental impact—his statistics describe half of all fundamental particles and enabled key advances in quantum field theory, condensed matter physics, and particle physics—Bose remained remarkably unassuming. He continued teaching at universities in Dhaka and Calcutta (now Kolkata), mentored students, pursued ideas in X-ray crystallography, unified field theory, and other areas, and never sought the spotlight. Nominated several times for the Nobel Prize (notably for Bose-Einstein statistics and his later work), he was never awarded it, and his name rarely appears in popular accounts of 20th-century physics. There's a poignant humility in his story: a man whose legacy literally names one of the two fundamental families of particles in the universe, yet whose personal fame never matched the scale of his contribution. Bose reminds us that true influence often arrives without fanfare. Some breakthroughs echo through textbooks and technologies, while their creators work in the background, content to let the universe carry their ideas forward—even if history's spotlight rarely finds them.
100
236
12
1,371
86,786
D. Joe Irvine 🇨🇦 retweeted
Germany's largest news magazine has a new title for Canadian PM @MarkJCarney Der Spiegel cover calls Mark Carney "Der bessere Amerikaner," the better American, and the hope of the free world. 💯
82
390
21
1,229
19,055
D. Joe Irvine 🇨🇦 retweeted
The discoverer of the neutron (James Chadwick) was a student of the man who discovered the proton (Ernest Rutherford), who in turn was a student of the man who discovered the electron (JJ Thompson).
16
130
8
1,667
39,937
D. Joe Irvine 🇨🇦 retweeted
Corey Conners continues his excellent play through two days @PGATour in Bermuda. 4-under 67 on Friday and he's currently T1! One thing of note for this week: Has gone away from cross-handed putting and is back in a traditional style.
2
6
40
1,733
D. Joe Irvine 🇨🇦 retweeted
Il y a douze ans jour pour jour, le caporal Nathan Cirillo a été tué alors qu’il montait la garde devant la Tombe du Soldat inconnu, et plusieurs autres personnes ont été blessées. Deux jours auparavant à Saint-Jean-sur-Richelieu, au Québec, l’adjudant Patrice Vincent avait été tué lors d’une autre attaque. Les attaques d’octobre 2014 ont marqué notre pays à jamais, mais elles n’ont pas changé qui nous sommes. pm.gc.ca/fr/nouvelles/declar…
58
85
4
503
25,558