نتایج جستجو برای: Dietary Reconstruction

تعداد نتایج: 321880  

2014
Ricardo Fernandes Andrew R. Millard Marek Brabec Marie-Josée Nadeau Pieter Grootes

Human and animal diet reconstruction studies that rely on tissue chemical signatures aim at providing estimates on the relative intake of potential food groups. However, several sources of uncertainty need to be considered when handling data. Bayesian mixing models provide a natural platform to handle diverse sources of uncertainty while allowing the user to contribute with prior expert informa...

1999
Dale A. Schoeller

The isotopic composition of an element records information about its history. Given a fossil, it is possible to analyse the isotopic composition of the elements in the fossil and to use this to reconstruct the diet that the animal consumed. The process of dietary reconstruction, however, is far from simple. Biological systems are quite complex and can themselves introduce isotopic fractionation...

Journal: :Science 2006
Matt Sponheimer Benjamin H Passey Darryl J de Ruiter Debbie Guatelli-Steinberg Thure E Cerling Julia A Lee-Thorp

Traditional methods of dietary reconstruction do not allow the investigation of dietary variability within the lifetimes of individual hominins. However, laser ablation stable isotope analysis reveals that the delta13C values of Paranthropus robustus individuals often changed seasonally and interannually. These data suggest that Paranthropus was not a dietary specialist and that by about 1.8 mi...

2017
Cristel Bender Cristel Rhiannon Bender Frank L’Engle Williams Laurie Rhode Godfrey Bethany Livermore Turner

The purpose of this study is to identify the currently supported diet and dietary niches of the Malagasy subfossil and extant lemurs. The study was conducted partially in Tsinjoarivo and Antananarivo, Madagascar in the summer of 2013. Samples were analyzed and microwear determined that the dietary niches were aligned with current literature. Grit accumulation occurs more frequently in disturbed...

Journal: :Diseases of The Esophagus 2022

Abstract The incidence of anastomotic leakage in esophagectomy and reconstruction surgery is reported over 10%. We have used subtotal stomach (SS) for reconstruction. retrospectively examined the results SS reconstruction, postoperative weight changes, quality life. SNS to deal with dietary problems. also devised a method combined oral nutritional supplementation by conceot ‘Taking ONS along me...

Journal: :PloS one 2016
Klervia Jaouen Paul Szpak Michael P Richards

Carbon and nitrogen stable isotope ratios of bone collagen are an established method for dietary reconstruction, but this method is limited by the protein preservation. Zinc (Zn) is found in bioapatite and the isotopic compositions of this element constitute a very promising dietary indicator. The extent of fractionation of Zn isotopes in marine environments, however, remains unknown. We report...

Journal: :Ecology 2006
James A Estrada Aaron N Rice Lisa J Natanson Gregory B Skomal

We conducted stable 13C and 15N analysis on white shark vertebrae and demonstrated that incremental analysis of isotopes along the radius of a vertebral centrum produces a chronological record of dietary information, allowing for reconstruction of an individual's trophic history. Isotopic data showed significant enrichments in 15N with increasing sampling distance from the centrum center, indic...

The Present study carried out on the bone samples collected from Roopkund Lake in Chamoli Garhwal, Uttarakhand, which is located 5029 meters from main sea level in between Nanda Ghunghti and Trishuli peak. This historical site belongs to the 9th century A.D.  All the samples selected for the study were dried in room temperature, as well as in hot air ovens at 32 degree Celsius. The Cleaning, pr...

2014
Daniel Robert Arno Sattler Silke Altmann Manfred Infanger Nauras Abuagela Sarah Maj Schneegans Hans-Georg Damert Armin Kraus

OBJECTIVE We introduce our surgical technique in two male genital reconstruction cases out of 15 post-bariatric patients. METHODS At our Department for Plastic Surgery at the University Hospital Magdeburg, 15 patients, 6 male and 9 female, underwent a surgical abdominoplasty after weight loss in 2009. RESULTS The average weight of the 15 patients was preoperatively 197.2 kg and the average ...

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