160 Matching Annotations
  1. Sep 2023
    1. can we build one of these kinds of shapes for animal communication
      • for: question, question - universal meaning shape for animal communication

      • comment

        • this would be an amazing project for TPF and BEing journeys. Could we actually talk to animals and plants to ask them about how we humans are treating them?
  2. Jun 2023
    1. To date, serine integrases have not been used extensively in plant systems

      although they have been shown to work in principle in Arabidopsis23, Nicotiana benthamiana2421, barley25 and wheat26

  3. Sep 2022
    1. if we want to deliver a thousand terawatt hours a year using these systems you could use 142 00:29:07 coal-fired power stations or 30 000 solar pv arrays or 12 309 wind turbine arrays of average size 00:29:18 where each array is like 10 win windows this is this is where we're getting the extra numbers from so each of these sites will have to be built and constructed and maintained and then when they wear out they need to 00:29:30 be decommissioned so renewables have a much lower energy return on energy invested ratio than fossil fuels and they and the the truth is they may not be strong enough to power the next industrial era 00:29:45 so gas and hydro power generation has to balance with demand supply and demand has to balance otherwise the grid will age

      !- for : EROI, energy density - lower energy density = more plants

  4. Aug 2022
  5. May 2022
    1. The cycle thermal efficiency (net power/heat input) for a supercritical vaporgenerator will exceed that for a subcritical cycle.
    2. A possible advantage to using the recuperative preheaters is that they reducethe heat load on the condenser and cooling tower. The lower capital cost for asmaller condenser and cooling tower must be compared to the extra cost for therecuperators; over the long haul, the resulting higher efficiency should meanlower operating cost
    3. The features that distinguish the Kalinacycles (there are several versions) from other binary cycles are as follows
    4. Given thesmall size of turbines using organic working fluids, practical considerations maylead to an alternative design using two separate turbines; see Figure 8.13.
    5. Dual-pressure binary plant: pressure-enthalpy process diagram
    6. Dual-pressure binary plant: Simplified schematic flow diagram
    7. The Carnot efficiency is the highest possible efficiency

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    Annotators

    1. therefore the gases should be removed from the condenser. This can be achieved byinstalling vacuum pumps, compressors, or steam ejectors. The condenser heat removalis done either by using a cooling tower or through cold air circulation in the condenser.The condensate forms a small fraction of the cooling water circuit, a large portion ofwhich is then evaporated and dispersed into the atmosphere by the cooling tower. Thecooling water surplus (blow down) is disposed of in shallow injection wells. In singleflash condensation system, the condensate does have direct contact with the coolingwater.
    2. Single flash power plants are classified according to their steam turbines types, i.e., theturbine exit conditions. Two such basic types are the single flash with a condensationsystem and the single flash back pressure system. In the first type, a condenser oper-ating at very low pressure is used to condensate the steam leaving the steam turbine.The condenser should operate at low vacuum pressure to maintain a large enthalpy dif-ference across the expansion process of the steam turbine, hence resulting in a higherpower output. The geothermal fluid usually contains non-condensable gases which arecollected at the condenser. Such a collection of gases may raise the condenser pressure,
  6. Aug 2021
  7. Jun 2021
  8. May 2021
  9. Apr 2021
  10. Nov 2020
    1. heterotrophs

      A heterotroph is an organism that eats plants or animals for nutrients and energy. The words is derived from Greek as hetero means other and trophe means nourishment. Organisms are either autotrophs or heterotrophs.

  11. Sep 2020
    1. Translocating plants is nothing new. Humans have been moving plants, particularly edible, medicinal, and more recently ornamental, species throughout our history (Mack, 1999; Mack and Lonsdale, 2001). Modern horticultural and agricultural industries are responsible for wide scale translocations. This includes intra-continental plant transport, as in Europe where 73% of commercially available plant species have commercial northern range limits that exceed natural northern range limits by an average of 1000 km. Restoration ecologists have been moving species from site to site for decades in attempts to revegetate marginal or highly impacted areas, or in response to large disturbances such as wildfire. Conservation biologists around the world have been translocating and reintroducing populations for decades. For example, in the United States the federally threatened Cirsium pitcheri (Pitcher’s thistle), extirpated from the state of Illinois since the early 1900s, was reintroduced back to the state in 1991 (Pati Vitt 2009). Translocating plants is not without risk, the most problematic is the potential for a species to become invasive in its introduced range. Intercontinental movement of species has indeed resulted in problems with invasive species, but the vast majority of introduced species do not become invasive.

      Many of the ideas Humboldt presented to demonstrate how geography determines the plant life growing in a particular place were conceived much earlier when he met George Forster. He had been on Captain James Cook’s second round-the-world expedition. Forster had a broad knowledge of vegetation in very different environments and opened Humboldt’s eyes to how plant life varied with access to water, altitude, and distance from the equator. At several points in the essay, Humboldt noted the environmental damage done by agriculture as forests were replaced by fields that quickly lost their fertility, leaving a degraded and useless landscape that affected local weather patterns. (Flannery 2019)\

      Flannery, Maura. Humboldt: Essay on the Geography of Plants. September 23, 2019. https://herbariumworld.wordpress.com/2019/09/23/humboldt-essay-on-the-geography-of-plants/ (accessed September 9, 2020).

      Pati Vitt, Kayri Havens, Andrea T. Kramer, David Sollenberger, Emily Yates. Assisted migration of plants: Changes in latitudes, changes in attitudes. Acadedmic Article, Biological Conservation, 2009.

  12. Aug 2020
    1. enabling precise control over agronomically-relevant outputs such as flowering time, stress response, or the biosynthesis of added value metabolites.
  13. Jun 2020
    1. The California Coastal Commission protects, conserves, & restores the coast for current & future generations.

      Posts on replanting native flora.

    1. Partners Remove Invasive Plants from Monterey Bay Dune Habitats. Because of the invasive nature and habitat-altering qualities of the iceplant and European beachgrass, both species are considered major threats to native coastal dune species at the Martin Dunes and within the Monterey Bay Dunes Complex.

  14. May 2019
  15. Apr 2019
    1. Balm of Mecca[edit] Forskal found the plant occurring between Mecca and Medina. He considered it to be the genuine balsam-plant and named it Amyris opobalsamum Forsk. (together with two other varieties, A. kataf Forsk. and A. kafal Forsk.).[4] Its Arabic name is abusham or basham, which is identical with the Hebrew bosem or beshem.[6] Bruce found the plant occurring in Abyssinia.[3] In the 19th century it was discovered in the East Indies also.[4] Linnaeus distinguished two varieties: Amyris gileadensis L. (= Amyris opobalsamum Forsk.), and Amyris opobalsamum L., the variant found by Belon in a garden near Cairo, brought there from Arabia Felix. More recent naturalists (Lindley, Wight and Walker) have included the species Amyris gileadensis L. in the genus Protium.[4] Botanists enumerate sixteen balsamic plants of this genus, each exhibiting some peculiarity.[6] There is little reason to doubt that the plants of the Jericho balsam gardens were stocked with Amyris gileadensis L., or Amyris opobalsamum, which was found by Bruce in Abyssinia, the fragrant resin of which is known in commerce as the "balsam of Mecca".[3] According to De Sacy, the true balm of Gilead (or Jericho) has long been lost, and there is only "balm of Mecca".[6] Newer designations of the balsam plant are Commiphora gileadensis (L.) Christ., Balsamodendron meccansis Gled. and Commiphora opobalsamum.
    2. Cancamon[edit] The lexicographer Bar Seroshewai considered the Arabic dseru (ﺿﺮﻭ), a tree of Yemen known as kamkam (ﮐﻤﮑﺎﻡ) or kankam (ﮐﻨﮑﺎﻡ), Syriac qazqamun (ܩܙܩܡܘܢ), Greek κάγκαμον, Latin cancamum, mentioned by Dioscorides (De materia medica 1.32) and Pliny (Hist. Nat. 12.44; 12.98).[28][30][31] Cancamon has been held for Balsamodendron kataf,[31] but also as Aleurites laccifera (Euphorbiaceae), Ficus spec. (Artocarpeae), and Butea frondosa (Papilionaceae).[32] Sanskrit kunkuma (कुनकुम) is saffron (Crocus sativus).
    3. Pine[edit] The Greek word ῥητίνη, used in the Septuagint for translating tsori, denotes a resin of the pine, especially Pinus maritima (πεύκη).[26][27] The Aramaic tserua (ܨܪܘܐ) has been described as the fruit of Pinus pinea L., but it has also been held for stacte or storax.[28] The Greek ῥητίνη ξηρά is a species of Abietineae Rich
    4. Terebinth[edit] Bochart strongly contended that the balm mentioned in Jer. 8:22 could not possibly be that of Gilead, and considered it as the resin drawn from the terebinth or turpentine tree.[6] The Biblical terebinth is Hebrew eloh (אֵלׇה), Pistacia terebinthus L.[24] or P. palaestina Boiss
    5. Zukum[edit] Ödmann and Rosenmüller thought that the pressed juice of the fruit of the zukum-tree (Eleagnus angustifolius L.) or the myrobalanus of the ancients, is the substance denoted; but Rosenmüller, in another place, mentioned the balsam of Mecca (Amyris opobalsamum L.) as being probably the tsori. Zukum oil was in very high esteem among the Arabs, who even preferred it to the balm of Mecca, as being more efficacious in wounds and bruises. Maundrell found zukum-trees near the Dead Sea. Hasselquist and Pococke found them especially in the environs of Jericho. In the 19th century, the only product in the region of Gilead which had any affinity to balm or balsam was a species of Eleagnus
    6. Mastic[edit] Celsius (in Hierobotanicon) identified the tsori with the mastic tree, Pistacia lentiscus L. The Arabic name of this plant is dseri or dseru, which is identical with the Hebrew tsori. Rauwolf and Pococke found the plant occurring at Joppa

      Plants

      Assuming that the 'tsori' was a plant product, several plants haven been proposed as its source.

  16. Jan 2019
    1. The usage of these terms is complicated by total or partial polyteny (synapsis of endoreduplicated chromosomes), as is discussed below.

      Learn more about this.

  17. Jul 2018
  18. Jun 2018
  19. ktakahata.github.io ktakahata.github.io
    1. niccars/] The botanical name of this medicinal shrub is Guilandina.
  20. Oct 2017
  21. Jan 2017
  22. Oct 2016
    1. Eventually cells stuck together to form creatures with many cells. Plants and animals came out of the sea onto land and became ever more complex and aware