Mathematical Interpretation of a Thirteen Hundred Year Old Stone Masonry Observatory
نویسندگان
چکیده
منابع مشابه
A hundred-year-old insight into the gut microbiome!
As the National Institutes of Health-funded Human Microbiome Project enters its second phase, and as a major part of this project focuses on the human gut microbiome and its effects on human health, it might help us to travel a century back in time and examine how microbiologists dealt with microbiome-related challenges similar to those of the 21st century using the tools of their time. An arti...
متن کاملSwimming With A Hundred Year Old Snapping Turtle
man-to-human transmission occurred is a scientifi c judgment. We agree with Uyeki and Bresee that statistical modeling can provide useful and supportive insights, and we hope that epidemiologic teams who investigate and control potential infectious disease outbreaks will carry the TranStat software (2) into the fi eld with them. We are grateful that Uyeki and Bresee point out that immediate imp...
متن کاملChankillo: a 2300-year-old solar observatory in coastal Peru.
The Thirteen Towers of Chankillo run north to south along a low ridge within a fourth-century B.C.E. ceremonial complex in north coastal Peru. From evident observing points within the adjacent buildings to the west and east, they formed an artificial toothed horizon that spanned-almost exactly-the annual rising and setting arcs of the Sun. The Chankillo towers thus provide evidence of early sol...
متن کاملFour hundred-million-year-old vesicular arbuscular mycorrhizae.
The discovery of arbuscules in Aglaophyton major, an Early Devonian land plant, provides unequivocal evidence that mycorrhizae were established >400 million years ago. Nonseptate hyphac and arbuscules occur in a specialized meristematic region of the cortex that continually provided new cells for fungal infection. Arbuscules are morphologically identical to those of living arbuscular mycorrhiza...
متن کاملA Numerical Model for Multi-leaf Stone Masonry
ABSTRACT This paper presents a non-linear finite element material model for the analysis of the mechanical behavior of multi-leaf masonry, which is quite frequently used in ancient stone masonry buildings. A damage model, previously developed by some of the authors for brittle materials (namely, concrete) was adapted to fit the experimental stress−strain behavior of stone masonry. To this end, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nexus Network Journal
سال: 2008
ISSN: 1590-5896,1522-4600
DOI: 10.1007/s00004-007-0085-3