How Your Eyeglasses are Made
نویسندگان
چکیده
منابع مشابه
How Fertilizer Recommendations Are Made
Recommendation, as we use the word here, means advice from a soil or crop specialist to those deciding how much of, what form of, and when to apply a fertilizer to a soil to benefit growth of a plant or crop. Recommendations of fertilizers and soil amendments must consider the interactions of all the factors discussed in this manual, including the soil, the crop, the climate, the beneficial eff...
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Aim: To establish the type and accuracy of sphygmomanometers in current use. Design and setting: Cross-sectional, observational study in 38 Oxfordshire primary care
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We propose a straightforward method to estimate the purity of vesicle preparations by comparing the ratio of nano-vesicle counts to protein concentration, using tools such as the increasingly available NanoSight platform and a colorimetric protein assay such as the BCA-assay. Such an approach is simple enough to apply to every vesicle preparation within a given laboratory, assisting researchers...
متن کاملHow Good are Your Types?
Software engineers primarily use two orthogonal means to reduce susceptibility to faults: software testing and static type checking. While many strategies exist to evaluate the effectiveness of a test suite in catching bugs, there are few that evaluate the effectiveness of type annotations in a program. This problem is most relevant in the context of gradual or optional typing, where programmer...
متن کاملNew insights into how seeds are made
Citation: Sabelli PA and Larkins BA (2015) New insights into how seeds are made. It is difficult to overstate the importance of seeds for the evolutionary success of the spermato-phytes and the development of human cultures and their survival. For hundreds of millions of years since their appearance in the Devonian period, seed plants have colonized many environments , thanks in part to several...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1909
ISSN: 0036-8733
DOI: 10.1038/scientificamerican12251909-489