منابع مشابه
Many ways to loop DNA.
In the 1960s, I developed methods for directly visualizing DNA and DNA-protein complexes using an electron microscope. This made it possible to examine the shape of DNA and to visualize proteins as they fold and loop DNA. Early applications included the first visualization of true nucleosomes and linkers and the demonstration that repeating tracts of adenines can cause a curvature in DNA. The b...
متن کاملDoing the wave in many ways.
Because coherent beams march in step, they are perfect for interferome-try: the measurement of interference between two or more beams. Waves behave like a series of crests and troughs. When waves from two sources combine, what happens depends on the waves' phases—the timing of when their crests and troughs strike a given point. If the waves are in phase, then when they are combined, their crest...
متن کاملWhat is wrong with what is said?
The scientific flaws in medical research, especially as they relate to randomized controlled trials are rather uniform and the common denominator of such flaws is the attempt to prove, rather than falsify, the study hypothesis. This interactive educational exercise is an attempt to highlight these flaws in short scenarios.
متن کاملTruth and What Is Said
A notion of truth as applicable to events of fact-stating use (utterances) of a sentence type is arguably presupposed and required by our evaluative practices of the use of language. The truth of an utterance clearly depends on what the utterance says. This fundamental dependence seems to be captured by the schema that if an utterance u says that P , then u is true iff P . Such a schema may thu...
متن کاملThe many ways to cleave hyaluronan.
Hyaluronan is being used increasingly as a component of artificial matrices and in bioengineering for tissue scaffolding. The length of hyaluronan polymer chains is now recognized as informational, involving a wide variety of size-specific functions. Inadvertent scission of hyaluronan can occur during the process of preparation. On the other hand, certain size-specific hyaluronan fragments may ...
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: Studia Philosophica Estonica
سال: 2015
ISSN: 1736-5899,2228-110X
DOI: 10.12697/spe.2014.7.2.03