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Bacterial ribosomes and plasmids Svedberg coefficient - the sedimentation coefficient s of a particle is used to characterize its behaviour in sedimentation processes, notably centrifugation. It is defined as the ratio of a particle's sedimentation velocity to the acceleration that is applied to it (causing the sedimentation). Youtube video: https://lnkd.in/gJKYBC88 #nikolaysgeneticslessons

My latest puplication in Talanta titled as "A zirconium metal–organic framework functionalized with a S/N containing carboxylic acid (MOF-808(Zr)-Tz) as an efficient sorbent for the ultrafast and selective dispersive solid phase micro extraction of chromium, silver and rhodium in water samples" is published. Please follow the link for fulltext: https://lnkd.in/dxWZ4Z7N

Reusing veins (Porphyry-Cu type deposits) Fractures reuse is more common than geoscientists believe. Photo shows at least 4 different hydrothermal event developed during a porphyry type system forming. Chronologically is possible apreciate: A-qz type vein reused by anhydrite (white-grey veins) in mid of pro-grade potassic imprint, later the hydrothermal fluid reused fracture plane developing grey-sericite haloes with abundant disseminated fine-grained chalcopyrite. During this slightly more acid event anhydrite become gypsum. Finally when the system was shutting down massive chalcopyrite precipitation anew reused the fracture forming an E-type veins.

Late Bn-Cpy mineralization inside A-qz type vein Photo exhibits late-chalcopyrite and -bornite semi-massive sulfides filling open space within early gray A-qz type vein. Usually hydrothermal fluids use pre-existing structures when the fluid-pressure are no available to generate own facturing framework.

Reusing veins (Porphyry-Cu type deposits) Fractures reuse is more common than geoscientists believe. Photo shows at least 4 different hydrothermal event developed during a porphyry type system forming. Chronologically is possible to appreciate: A-qz type vein reused by anhydrite (white-grey veins) in mid of pro-grade potassic imprint, later the hydrothermal fluid reused fracture plane developing grey-sericite halos with abundant disseminated fine-grained chalcopyrite. During this slightly more acid event anhydrite become gypsum. Finally when the system was shutting down massive chalcopyrite precipitation anew reused the fracture forming an E-type veins.

The structure of a pollen grain is characterized by two distinct layers: the intine and the exine. [1] INTINE: The intine is the inner layer of the pollen grain, located beneath the exine. It is primarily composed of cellulose and pectin, which are common plant cell wall components [2] EXINE: The exine is the outermost layer of the pollen grain and is composed of a substance called sporopollenin [3] GERM PORE: The germ pore is a specific feature found in the exine layer

Did the oxidation of thietane ring improve the pharmacologic response of compounds in comparison to oxetane or unoxidized thietane ring? Try our building blocks in your research https://lnkd.in/gaVCN6Zz.

At #Sepiolsa, we are exploring the unique properties of sepiolite and attapulgite in the article “Use of #sepiolite and #attapulgite clays at renders, plasters, skim coats and wall putty: one step beyond rheology”. Discover how these special clays of mineral origin provide differentiated pseudoplasticity to plasters, plasters, mortars, and wall putties thanks to their outstanding ability to form three-dimensional networks in aqueous liquid media. The fibrous structure of sepiolite, with hydroxyl groups on its surface, allows for unique interactions with water molecules via hydrogen bonds. This results in a unique #pseudoplastic behaviour, where viscosity decreases with increasing shear rate, overcoming the initial resistance of the formed network and facilitating a more agile flow. At Sepiolsa we make the most of the rheological advantages of sepiolite and #attapulgite to provide greater performance in multiple industrial applications. Take a closer look at our article and discover the full potential of these special mineral #clays. #coatings #mortars #plasters #enduit #skimcoat #plaster #wallputty

I'm sharing this for those who haven't read our article yet: “Use of #sepiolite and #attapulgite clays at #renders, #plasters, #skimcoats and #wallputty: one step beyond rheology” Follow Rheoplus and SEPIOLSA for further insights!

Solution FridayFun_12-01-2024 Triflic anhydride activates the substrate for nucleophilic attack by hydrazine. The resulting intermediate undergoes a [3,3]-sigmatropic rearrangement to form a ring-opened species similar to a Zincke intermediate.Tautomerization, followed by ring closure, yields the desired five-membered ring. Rearomatization, by the expulsion of the amidine nucleofuge, affords the pyrazole product.