Polarization of negative muons implanted in the fullerene C60: Speculations about a null result

This chapter re-examines the view widely held by physicists that the luminiferous ether became an outdated concept in the early twentieth century and that Albert Einstein’s special relativity killed it. A second common narrative is that the null result of the 1887 Michelson–Morley ether-drift experiment led to Einstein’s theory and the demise of the ether. On the basis of these two simplified narratives, it has become part of the physicists’ ‘imagined past’ that the Michelson–Morley experiment provided the key evidence decreeing the end of the ether. Using scientometrics, this chapter argues that the first part of this idealised narrative is misleading and that the two parts of this narrative are deeply intertwined, as both had historical roots in the reception of Einstein’s relativity theories. In this perspective, the well-known episode of Dayton C. Miller’s repetition of the Michelson–Morley experiment in the 1920s appears in a new light.

Null-Result Test for Effect on Weight from Large Electrostatic Charge

Physics ◽

10.3390/physics3020013 ◽

2021 ◽

Vol 3 (2) ◽

pp. 160-172

Author(s):

G. Hathaway ◽

L. L. Williams

Keyword(s):

Scalar Field ◽

Long Range ◽

Buoyancy Force ◽

Weak Field ◽

Electrostatic Charge ◽

Measurement Precision ◽

Test Results ◽

Static Test ◽

Null Result ◽

Test Objects

We report test results searching for an effect of electrostatic charge on weight. For conducting test objects of mass of order 1 kg, we found no effect on weight, for potentials ranging from 10 V to 200 kV, corresponding to charge states ranging from 10−9 to over 10−5 coulombs, and for both polarities, to within a measurement precision of 2 g. While such a result may not be unexpected, this is the first unipolar, high-voltage, meter-scale, static test for electro-gravitic effects reported in the literature. Our investigation was motivated by the search for possible coupling to a long-range scalar field that could surround the planet, yet go otherwise undetected. The large buoyancy force predicted within the classical Kaluza theory involving a long-range scalar field is falsified by our results, and this appears to be the first such experimental test of the classical Kaluza theory in the weak field regime, where it was otherwise thought identical with known physics. A parameterization is suggested to organize the variety of electro-gravitic experiment designs.

Effect of fullerene C60 on morphofunctional state of seminiferous tubules of the testes after vitrification

Cryobiology ◽

10.1016/j.cryobiol.2020.10.211 ◽

2020 ◽

Vol 97 ◽

pp. 304

Author(s):

Nataliia Volkova ◽

Mariia Yukhta ◽

Larisa Sokil ◽

Lyudmyla Chernyshenko ◽

Lyudmyla Stepanyuk ◽

...

Keyword(s):

Fullerene C60 ◽

Seminiferous Tubules

Fullerene C60 promoted photochemical hydroamination reactions of an electron deficient alkyne with trimethylsilyl group containing tertiary N-alkylbenzylamines

RSC Advances ◽

10.1039/d1ra00166c ◽

2021 ◽

Vol 11 (11) ◽

pp. 5914-5922

Author(s):

Suk Hyun Lim ◽

Hannara Jang ◽

Dae Won Cho

Keyword(s):

Fullerene C60 ◽

Dimethyl Acetylenedicarboxylate ◽

Trimethylsilyl Group

C60-promoted photoaddition reactions of N-α-trimethylsilyl-N-alkylbenzylamines with dimethyl acetylenedicarboxylate (DMAD) were carried out.

A novel tricationic fullerene C60 as broad-spectrum antimicrobial photosensitizer: mechanisms of action and potentiation with potassium iodide

Photochemical & Photobiological Sciences ◽

10.1007/s43630-021-00021-1 ◽

2021 ◽

Vol 20 (3) ◽

pp. 327-341

Author(s):

Maximiliano L. Agazzi ◽

Javier E. Durantini ◽

Ezequiel D. Quiroga ◽

M. Gabriela Alvarez ◽

Edgardo N. Durantini

Keyword(s):

Potassium Iodide ◽

Broad Spectrum ◽

Mechanisms Of Action ◽

Fullerene C60

Viscous behaviour of o-xylene/fullerene C60 solutions

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.115416 ◽

2021 ◽

Vol 328 ◽

pp. 115416

Author(s):

V.P. Zhelezny ◽

K.Yu. Khanchych ◽

I.V. Motovoy ◽

A.S. Nikulina

Keyword(s):

Fullerene C60 ◽

Viscous Behaviour

POS1383 THE ASSOCIATION BETWEEN BARIATRIC SURGERY AND DUPUYTREN DISEASE: A COHORT STUDY FROM SWEDISH NATIONWIDE HEALTHCARE REGISTRIES

Annals of the Rheumatic Diseases ◽

10.1136/annrheumdis-2021-eular.4067 ◽

2021 ◽

Vol 80 (Suppl 1) ◽

pp. 974.3-975

Author(s):

T. Burkard ◽

J. Lane ◽

D. Holmberg ◽

A. M. Burden ◽

D. Furniss

Keyword(s):

Bariatric Surgery ◽

Body Mass Index ◽

Weight Loss ◽

Cohort Study ◽

Secondary Care ◽

High Body Mass Index ◽

Null Result ◽

Increased Risk ◽

Dupuytren Disease

Background:Dupuytren disease (DD) is multifactorial, with several genetic and environmental risk factors contributing to disease susceptibility. High body mass index, however, was suggested to be protective of DD.1 The impact of weight loss among obese patients on DD has not been assessed to date.Objectives:To assess the association between bariatric surgery and DD in a secondary care setting.Methods:We performed a propensity score (PS)-matched cohort study using data from Swedish nationwide healthcare registries (patient registry [secondary care], causes of death registry, prescribed drug registry). Patients aged 30-79 years who underwent bariatric surgery between 2006 and 2019 were matched to up to 2 obese bariatric surgery-free patients (called unexposed patients) based on their PS. PS-matching was carried out in risk set sampling to reduce selection bias, within 4 sequential cohort entry blocks to account for time trend biases. The outcome DD was defined as a diagnosis of DD in secondary care or partial or total fasciotomy of wrist or hand. After a 1-year run-in period, patients were followed in an “as-treated” approach. We applied Cox proportional hazard regression to calculate hazard ratios (HR) with 95% confidence intervals (CIs) of incident DD among bariatric surgery patients when compared to obese unexposed patients overall, and in subgroups of age, sex, bariatric surgery type, and by duration of follow-up.Results:A total of 34 959 bariatric surgery patients were PS-matched to 54 769 obese unexposed patients. A total of 71.6% of bariatric surgery patients were women. Bariatric surgery patients had a mean age of 45.5 years and a mean follow-up of 6.9 years. All patient characteristics in obese unexposed patients were highly similar. We observed 126 and 136 severe DD cases among bariatric surgery and obese unexposed patients, respectively. The risk of DD was significantly increased in bariatric surgery patients compared to obese unexposed patients (HR = 1.30, 95% CI 1.02-1.65). The risk of DD was higher in women (HR = 1.36, 95% CI 1.00-1.84) than in men (HR = 1.05, 95% CI 0.70-1.58). Age did not modify the risk of DD among bariatric surgery patients compared to obese unexposed patients. Malabsorptive bariatric surgery yielded an increased risk of DD when compared to obese unexposed patients (HR = 1.33, 95% CI 1.04-1.71), while restrictive bariatric surgery yielded a null result. The risk of DD increased with duration of follow-up (>5 years of follow-up: HR = 1.63, 95% CI 1.14-2.34, null result in earlier follow-up).Conclusion:Our results suggest that substantial weight loss is associated with a latent increased risk of severe DD in an obese population. This observation further strengthens current evidence that high body mass index is protective against DD. The latency of risk increase of DD after bariatric surgery may suggest that slowly adapting metabolic changes may be part of the mechanism of DD emergence.References:[1]Hacquebord JH, Chiu VY, Harness NG. The Risk of Dupuytren Surgery in Obese Individuals. J Hand Surg Am. 2017, 42: 149–55.Acknowledgements:We thank Prof. Dr. Jesper Lagergren (Karolinksa Institutet, Stockholm, Sweden) for hosting Dr. Theresa Burkard for a research stay at the Upper Gastrointestinal Surgery Group and making the data available for use. Furthermore, we thank Dr. Giola Santoni (Karolinksa Institutet, Stockholm, Sweden) for her technical support.Disclosure of Interests:None declared