| Sponsor | Speaker | Description |
| William Dick | William Dick -- Scientech Club Historian | TR's 1902 Visit to Indy: (Also OK for Emergency Use)(Sub: 3/30/2022) President Theodore Roosevelt was the first President to campaign in the non general election years. He came to Indianapolis when a medical emergency happened to him. |
| William McNiece | William McNiece -- Associate Professor of Anesthesia, Indiana University School of Medicine | Caisson Disease -- Our Understanding Over Time: (Sub: 3/6/2023) This is a talk I originally prepared for the Society for Industrial Archeology. It looks at the development of the use of underwater construction caissons and the related caisson disease. It is primarily a historical view. |
| Helmi Banta | Dr. Greg Smith -- He is the Senior Conservation Scientist at Newfields. PhD in physical analytical chemistry from Duke University and completed post doctoral research at the National Gallery of Art in Washington DC. , the National Synchrotron Light Source at Brookhaven in NY and University College in London | Authenticating a Nazca Tunic using combined dye analysis and radiocarbon dating on a single yarn : (Sub: 3/11/2023) The accessioning of ancient textiles into museum collections often requires objective information regarding the object’s appropriateness and authenticity before purchase or gift acceptance. In the case of colored fabrics, the identification of dyestuffs consistent with the attributed time period and culture builds confidence and reduces the chances of the object being a simple forgery or fake produced using modern materials. Moreover, this information adds to the technical, cultural, and conservation knowledge regarding the object. Increasingly, chronometric age estimates in the form of radiocarbon dating are also needed to establish the object’s age or to further prove the materials match the purported date range of the textile. Each of these analyses consumes a small sample of the object, and typically they are conducted separately by different laboratories on individual sample yarns. This report demonstrates for the first time the sequential, combined analysis of dyes by liquid chromatography with radiocarbon dating of the same residual dye-extracted sample. The chemicals and solvents used in various dye extraction protocols are shown not to contaminate the extracted yarns for radiocarbon dating purposes. The approach was used in the authentication study of an ancient Nazca tunic made from natural fibers (wool) and dyes (indigoids, anthraquinones, and flavonoids) shown to have most likely been produced between 595 and 665 CE. |
| Rick Whitener | Alan Schmidt, Jim Willson, Dick Carter | Nobel Prizes for 2022 in Chemistry and Physics: (Sub: 3/22/2023) Alan Schmidt will cover the prize awarded to Carolyn R. Bertozzi, Morten Meldal and K. Barry Sharpless “for the development of click chemistry and bioorthogonal chemistry”.
Jim Willson or Dick Carter will cover the prize awarded to Alain Aspect, John F. Clauser and Anton Zeilinger “for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science” |
| Rick Whitener | Jeff Rasley and Benny Ko -- Jeff and Benny and President and Vice President of the Scientech Foundation | Annual Meeting, Elections and Report of Scientech Foundation activities: (Sub: 3/22/2023) Per our bylaws, this is a required meeting to allow the members to elect officers for 2024. After the election, our Scientech Foundation President and Vice President will report on the activities which occurred in 2023 and plans for 2024. |
| Rick Whitener | Rick Whitener -- B.A. in Economics from Davidson College. Worked in banking for 20 years. Worked in IT for 50 years. Current president of Scientech Club. | The Economic Contributions of Older Americans: (Sub: 3/22/2023) The talk will cover the ways that older Americans impact the US and the global economy. These include employment, consumption, investment, charitable contributions, and bequests. It will also review how non-paid activities such as volunteer work impact the economy.
There will be a short review of the economic history of senior adult poverty and how senior activities have reduced poverty for others. Some math will be involved. |
| Steve Springer | Briony Horgan -- Planetary scientest at Purdue who helps plan with Nasa for the use of the Rovers on Mars including Perseverance currently in the Jezero crater | Roving on Mars: (Sub: 3/23/2023) See above |