Stable isotope ratio variations are regulated by physical and chemical laws. These rules depend on a relation with mass differences between isotopes. New classes of isotope variation effects that deviate from mass dependent laws, termed mass independent isotope effects, were discovered in 1983 and have a wide range of applications in basic chemistry and nature. In this special edition, new applications of these effects to physical chemistry, solar system origin models, terrestrial atmospheric and biogenic evolution, polar paleo climatology, snowball earth geology, and present day atmospheric sciences are presented.
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http://dx.doi.org/10.1073/pnas.1312926110 | DOI Listing |
Br J Hosp Med (Lond)
January 2025
Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
The relationship between retinal fundus hemorrhage and the severity of coronary artery lesions remains unclear. This study aimed to explore the incidence of fundus hemorrhage in patients at high risk of coronary heart disease (CHD) and to examine its correlation with the SYNTAX score, a tool used to assess the complexity of coronary artery disease. This retrospective study consecutively enrolled patients undergoing coronary angiography (CAG) at Beijing Anzhen Hospital Hospital from June 2019 to January 2020.
View Article and Find Full Text PDFInt J Gynaecol Obstet
January 2025
Division of Gynecologic Oncology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada.
Objective: The objective of this paper is to study the association between obesity and tumor recurrence in patients with vulvar cancer.
Methods: This is a retrospective study including vulvar cancer patients from 2003 to 2022. Our primary outcome was progression-free survival (PFS) stratified by status of obesity, defined as body mass index (BMI) >30.
J Clin Med
January 2025
Division of General Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Dapi Road, Niaosong District, Kaohsiung 833, Taiwan.
Pancreaticoduodenectomy (PD) is a major surgery associated with significant morbidity and mortality, especially in older adult patients. Malnutrition is a common complication in these patients and is linked to poorer outcomes. This study aimed to investigate the associations between preoperative nutritional status using the Geriatric Nutritional Risk Index (GNRI) and postoperative outcomes in older adult patients who underwent PD.
View Article and Find Full Text PDFJ Clin Med
January 2025
Division of Cardiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria.
Extracellular volume (ECV) by cardiovascular magnetic resonance (CMR) imaging is associated with disease burden and clinical outcomes. Recent studies in patients with valvular heart disease (VHD) have suggested that the indexed total ECV (iECV) = ECVx(LV/1.05)/body surface area may supersede ECV in terms of prognostication.
View Article and Find Full Text PDFMolecules
January 2025
Research and Innovation Centre, Fondazione Edmund Mach, 38098 San Michele all'Adige, TN, Italy.
This study explores the impact of geographical origin, harvest time, and cooking on the volatile organic compound (VOC) profiles of wild and reared seabream from the Adriatic and Tyrrhenian Seas. A Proton Transfer Reaction-Time of Flight-Mass Spectrometry (PTR-ToF-MS) allowed for VOC profiling with high sensitivity and high throughput. A total of 227 mass peaks were identified.
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