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A partly shared plant signaling route used in arbuscular mycorrhizal and root-nodule symbioses. Nuclear calcium oscillations and CCaMK are central elements; partner-specific reception and downstream programs remain distinct.
A high-pass filter attenuates low frequencies relative to a specified higher-frequency pass-band. A simple first-order RC high-pass has the displayed transfer function, with a zero at zero frequency and a pole at . Combining a high-pass with a low-pass makes a band-pass, but its attainable selectivity depends on pole structure rather than gain alone.
Gallium phosphide is a compound semiconductor of gallium and phosphorus, with chemical formula . Its electronic band structure determines which photon energies can excite mobile charge carriers and which transitions can produce light.
Its bulk band gap is indirect: a transition near the lowest gap involves a change of crystal momentum, so a phonon or another momentum-transfer mechanism matters. Consequently a band gap value alone does not predict an efficient light-emitting diode. Impurity states, radiative and nonradiative recombination, and extraction of emitted photons all affect the observable device output.
An increase of electrical conductivity due to light-generated mobile carriers. Generation, recombination, trapping and mobility determine the observable response.
A carrier regime in which conduction electrons and valence holes are dilute enough to use Boltzmann approximations to Fermi-Dirac occupations. Typically and are required for both species.
An energy barrier at a metal–semiconductor contact. Depletion width and tunneling depend on doping; interface states can limit simple work-function predictions.
A contact with approximately linear, nonrectifying current–voltage behavior and suitably low contact resistance in its operating range.
Reduction of electronically active surface states or of minority-carrier access to them. Chemical bond termination and electrostatic field effects can both suppress surface recombination.
Recombination of charge carriers through surface or interface states. Surface passivation and suitable wider-band-gap window or field layers can reduce minority-carrier losses in a photovoltaic device.
An organic solid supporting electronic charge transport; conjugation, intermolecular packing and disorder influence its properties.
Production of different mature RNA sequences from the same precursor by changing which splice sites or exons are used. A cassette exon can be included in one transcript isoform and skipped in another.
The junction between segments joined during RNA splicing. A read crossing an exon–exon junction can distinguish a processed transcript from the corresponding unspliced precursor.
The precursor-RNA branch-site position whose reactive group initiates the first transesterification in spliceosomal RNA splicing.
A pyrimidine-rich precursor-RNA segment involved in recognition near many spliceosomal splice sites.
An auxiliary splicing factor system involved in recognition of the polypyrimidine tract and 3′ splice-site region. Competition with its recruitment can alter use of alternative acceptors.
A small nuclear ribonucleoprotein involved in 5′ splice-site recognition. Its association and productive communication with other sites are distinct steps.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact