The measurement and interpretation of the stable isotope composition of any material or molecule has widespread application in disciplines ranging from the earth sciences to ecology, anthropology, and forensics. The naturally occurring differences in the abundance of the stable isotopes of carbon, nitrogen, oxygen, and many other elements provide valuable insight into environmental conditions and sources, fluxes, and mechanisms of material transfer. Because isotopic variations in nature are very small, the measurement itself requires cutting edge analytical instrumentation using isotope ratio mass spectrometry (IRMS) as well as rigorous data reduction procedures for calibration and quality control. The isoreader package implements an easily extendable interface for IRMS data from common instrument vendor file formats and thus enables the reading and processing of stable isotope data directly from the source. This provides a foundational tool for platform-independent, efficient and reproducible data reduction.

/pdf/isoreader-an-r-package-to-read-stable-isotope-data-files-for-1it47zyiwc.pdf

Isoreader: An R package to read stable isotope data files for reproducible research

Fifty years ago, the Department of Orthopaedics was founded and became the newest clinical department of the College of Medicine and Philippine General Hospital, University of the Philippines. This year 2021, we celebrate its Golden Anniversary. Even in its infancy, the department has given due emphasis on research as much as its commitment to training and service. It was one of the first if not the first clinical department to hold an Annual Research Forum and even a research unit was organized by its first Chair, Dr. Jose Silao. Much later, a small biomechanical testing unit was put up. Time and again, its staff and trainees have contributed to the continuing studies in Orthopaedics. These include a better understanding of essential surgical anatomy, validation of surgical procedures, new approaches to the treatment of many Orthopaedic pathologies, and innovations in implants and devices. The generation of new knowledge is a mandate for all university colleges and units and the Department of Orthopaedics takes this seriously. It takes pride in being recognized as a university-based training program. It hammers into the consciousness of its staff and trainees the importance of research. It uses research training for its residents as an important tool in inculcating in them the art of critical thinking, a must in our present-day evidence-based medical practice. This Orthopaedic issue of the Acta Medica Philippina is a fitting way of honoring the department’s long research tradition. The ease with which we gathered publishable researches for this issue just shows the vibrancy of research in the department and how much it has grown from its beginning in 1971. The founding fathers of the department will be proud to see that the department takes seriously the challenge to excel in Training, Service, and Research. I heartily congratulate and profusely thank the authors and editorial staff for coming out with this special Orthopaedic Issue of the Acta Medica Philippina.
Juanito S. Javier, MD, MChOrth Chair Department of Orthopedics Philippine General HospitalUniversity of the Philippines Manila

/pdf/message-of-the-department-chair-x1aev593t6.pdf

Message of the Department Chair

Ana-Voica Bojar1,2*, Andrzej Pelc3 and Christophe Lécuyer4,5 Department of Geology, Salzburg University, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria Department of Mineralogy, Universalmuseum Joanneum, Weinzöttlstrasse 16, A-8045 Graz, Austria Mass Spectrometry Laboratory, Institute of Physics, Maria Curie-Skłodowska University, Plac Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland Laboratoire de Géologie de Lyon, CNRS UMR 5276, Université Claude Bernard Lyon 1, France Institut Universitaire de France, 103 Boulevard Saint-Michel, 75005 Paris, France

Stable isotope studies of the water cycle and terrestrial environments: introduction

Multi-proxy strategy for determining palaeoclimate parameters in the Ruby Ranch Member of the Cedar Mountain Formation

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Multi-proxy strategy for determining palaeoclimate parameters in the Ruby Ranch Member of the Cedar Mountain Formation