Several temporal paradoxes exist in physics. These include General Relativity's grandfather and ontological paradoxes and Special Relativity's Langevin-Einstein twin-paradox. General relativity paradoxes can exist due to a Gödel universe that follows Gödel's closed timelike curves solution to Einstein's field equations. A novel biological temporal paradox of General Relativity is proposed based on reproductive biology's phenomenon of heteropaternal fecundation. Herein, dizygotic twins from two different fathers are the result of concomitant fertilization during one menstrual cycle. In this case an Oedipus-like individual exposed to a Gödel closed timelike curve would sire a child during his maternal fertilization cycle. As a consequence of heteropaternal superfecundation, he would father his own dizygotic twin and would therefore generate a new class of autofraternal superfecundation, and by doing so creating a 'twin-father' temporal paradox.
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http://dx.doi.org/10.1016/j.pbiomolbio.2017.10.004 | DOI Listing |
Bull Math Biol
January 2025
Department of Mathematics, Vivekananda College, Kolkata, West Bengal, 700063, India.
The extinction of species is a major threat to the biodiversity. Allee effects are strongly linked to population extinction vulnerability. Emerging ecological evidence from numerous ecosystems reveals that the Allee effect, which is brought on by two or more processes, can work on a single species concurrently.
View Article and Find Full Text PDFWearable Technol
December 2024
College of Engineering, University of Michigan, Ann Arbor, MI, USA.
Internal and external rotation of the shoulder is often challenging to quantify in the clinic. Existing technologies, such as motion capture, can be expensive or require significant time to setup, collect data, and process and analyze the data. Other methods may rely on surveys or analog tools, which are subject to interpretation.
View Article and Find Full Text PDFCureus
December 2024
Department of Dermatology, Asahikawa Medical University, Asahikawa, JPN.
Eczematous paradoxical reactions are commonly associated with anti-interleukin-17A (anti-IL-17A) antibodies. However, IL-23 p19 inhibitors can also cause similar cutaneous manifestations. We present a case of a 77-year-old Japanese woman with palmoplantar pustulosis (PPP), who developed eczematous lesions on her face, neck, and dorsum of the hands 10 weeks after initiating guselkumab treatment.
View Article and Find Full Text PDFPsychol Rev
January 2025
Department of Experimental Psychology, University of Groningen.
Time is a central dimension against which perception, action, and cognition play out. From anticipating when future events will happen to recalling how long ago previous events occurred, humans and animals are exquisitely sensitive to temporal structure. Empirical evidence seems to suggest that estimating time prospectively (i.
View Article and Find Full Text PDFUnited European Gastroenterol J
December 2024
Division of Gastroenterology and Hepatology, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, School of Medicine, Shanghai Institute of Digestive Disease, Renji Hospital, Shanghai Jiao Tong University, Shanghai, China.
Background And Objective: With limited evidence connecting paradoxical inflammatory bowel disease (paradoxical IBD) to the newest biologics and Janus kinase inhibitors, our study aims to investigate the occurrence of paradoxical IBD induced by these agents in treating other immune-mediated inflammatory diseases (IMIDs). We aim to identify associated risk signals, the primary affected population, and the risk profile changes over time.
Methods: We performed disproportionality analysis to evaluate paradoxical IBD risk signals using data from the FDA Adverse Event Reporting System.
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