surface benchmark
51Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …
52Current sea level rise — This article is about the current and future rise in sea level associated with global warming. For sea level changes in Earth s history, see Sea level#Changes through geologic time. Sea level measurements from 23 long tide gauge records in… …
53Datum (geodesy) — Geodesy Fundamentals Geodesy · …
54Keratoconus — Classification and external resources The conical cornea that is characteristic of keratoconus ICD 10 H …
55Computational chemistry — is a branch of chemistry that uses principles of computer science to assist in solving chemical problems. It uses the results of theoretical chemistry, incorporated into efficient computer programs, to calculate the structures and properties of… …
56Gene therapy — using an Adenovirus vector. A new gene is inserted into an adenovirull. If the treatment is successful, the new gene will make a functional protein. Gene therapy is the insertion, alteration, or removal of genes within an individual s cells and… …
57Excavation (archaeology) — The term archaeological excavation has a double meaning.# Excavation is the best known and most commonly used within the science of archaeology. In this sense it is the exposure, processing and recording of archaeological remains. # The term is… …
58Hurricane Camille — Infobox Hurricane Name=Hurricane Camille Type=hurricane Year=1969 Basin=Atl Image location=Hurricane camille.jpg Formed=August 14, 1969 Dissipated=August 22, 1969 1 min winds=175 Pressurepre=≤ Pressure=905 Da Inflated=1 Fatalities=259 directcite… …
59Flat roof — A flat roof is a type of covering of a building. In contrast to the sloped form of a roof, a flat roof is horizontal or nearly horizontal. Materials that cover flat roofs should allow the water to run off freely from a very slight… …
60Dye-sensitized solar cell — A selection of dye sensitized solar cells A dye sensitized solar cell (DSSC, DSC or DYSC[1]) is a low cost solar cell belonging to the group of thin film solar cells.[2] …
