[Lebitso la Selatine]Huperzia serratum

[Mohloli] Huperziceae setlama se tsoang Chaena

[Ponahalo]Sootho ho isa bosoeu

[Motsoako]Huperzine A

[Tlhaloso]Huperzine A 1% - 5%, HPLC

[Solubility] E qhibiliha ka chloroform, methanol, ethanol, e qhibiliha hanyenyane metsing.

[Karolo ea boholo] 80 Mesh

[Tahlehelo ha o omisoa] ≤5.0%

[Heavy Metal] ≤10PPM

[Masala a chefo e bolaeang likokoanyana] EC396-2005, USP 34, EP 8.0, FDA

[Storage] Boloka sebakeng se pholileng le se omileng, qoba ho khanya le mocheso.

[Shelofo bophelo] 24 Likhoeli

[Package] E pakiloe ka meropa ea pampiri le mekotla e 'meli ea polasetiki ka hare.

[Huperzine A ke eng]

Huperzia ke mofuta oa boriba bo melang Chaena. E amana le mosi oa lihlopha (lelapa la Lycopodiaceae) 'me litsebi tse ling tsa limela li tsejoa e le Lycopodium serratum. Boriba bohle bo lokisitsoeng bo ne bo sebelisoa ka moetlo. Litokisetso tsa kajeno tsa litlama li sebelisa feela alkaloid e ka thōko e tsejoang e le huperzine A. Huperzine A ke alkaloid e fumanoang huperzia e tlalehiloeng ho thibela ho senyeha ha acetylcholine, ntho ea bohlokoa e hlokoang ke tsamaiso ea methapo ho fetisetsa boitsebiso ho tloha seleng ho ea ho sele. Lipatlisiso tsa liphoofolo li bontšitse hore bokhoni ba huperzine A ba ho boloka acetylcholine bo ka ba boholo ho feta ba lithethefatsi tse ling tsa ngaka. Ho lahleheloa ke mosebetsi oa acetylcholine ke tšobotsi e ka sehloohong ea mathata a mangata a boko, ho akarelletsa lefu la Alzheimer's. Huperzine A e ka boela ea ba le phello e sireletsang liseleng tsa boko, ea eketsa bokhoni ba eona ba ho thusa ho fokotsa matšoao a mathata a mang a boko.

[Mosebetsi] Ha e sebelisoa mekhoeng e meng ea phekolo, ho fumanoe hore huperzine A e sebetsa e le cholinesterase inhibitor, mofuta oa moriana o sebelisetsoang ho thibela ho senyeha ha acetylcholine (k’hemik’hale e hlokahalang bakeng sa ho ithuta le ho hopola).

Ha e sebelisoe feela e le phekolo ea lefu la Alzheimer, huperzine A e boetse e boleloa hore e ntlafatsa ho ithuta le mohopolo le ho sireletsa khahlanong le ho fokotseha ha kelello ho amanang le lilemo.

Ho phaella moo, ka linako tse ling huperzine A e sebelisetsoa ho matlafatsa matla, ho eketsa ho falimeha, le ho thusa ho phekola myasthenia gravis (lefu la autoimmune le amang mesifa).

Video ena e u bontša mokhoa oa ho bitsa Japonica

Lenane la lipina tsa Khemistri: https://www.youtube.com/playlist?list=PL_hX5wLdhf_KyuOalV6rwHjo810Zaa6xq

ho feta ho https://scitech.quickfound.net/

Kakaretso ea hore na li-plastiki le liraba tsa maiketsetso li etsoa joang.

Kenya filimi e kentsoeng pele e nang le video le molumo o ntlafalitsoeng.

Filimi ea sechaba e tsoang ho Laeborari ea Congress Prelinger Archives, e hahelletsoeng hanyane ho tlosa mats'oafo a sa lekanang, 'me likarolo li lokisitsoe,' me ho sebelisoa tokiso ea khanya e fapaneng le mebala le phokotso ea lerata la video.
Pina ea molumo e ne e boetse e sebetsoa ka mokhoa o tloaelehileng oa molumo, phokotso ea lerata, phokotso ea ho khaola, le / kapa ho lekana (molumo o hlahisoang, leha o sa phethahala, o lerata haholo ho feta oa mantlha).

https://creativecommons.org/licenses/by-sa/3.0/

https://en.wikipedia.org/wiki/Polymer

Polymer ke molek'hule e kholo (macromolecule) e entsoeng ka likarolo tse pheta-phetoang tsa sebopeho. Li-sub-units tsena hangata li hokahantsoe ke li-complete chemical bond. Leha lentsoe polymer ka linako tse ling le nkuoa ho bolela lipolasetiki, ha e le hantle le akaretsa sehlopha se seholo sa metsoako e nang le lisebelisoa tsa tlhaho le tsa maiketsetso tse nang le mefuta e mengata e fapaneng.

Ka lebaka la mefuta e mengata e sa tloaelehang ea thepa ea polymeric, e bapala karolo ea bohlokoa le e fumanehang hohle bophelong ba letsatsi le letsatsi. Karolo ena e tloha ho li-plastiki tsa maiketsetso tse tloaelehileng le li-elastomer ho ea ho li-biopolymer tsa tlhaho tse kang nucleic acid le liprotheine tse bohlokoa bophelong.

Lisebelisoa tsa tlhaho tsa polymeric tse kang shellac, amber, boea, silika le rabara ea tlhaho li 'nile tsa sebelisoa ka lilemo tse makholo. Ho na le li-polymer tse ling tsa tlhaho tse fapaneng, joalo ka selulose, e leng eona karolo ea mantlha ea lehong le pampiri. Lethathamo la li-polymers tsa maiketsetso le kenyelletsa rabara ea maiketsetso, Bakelite, neoprene, nylon, PVC, polystyrene, polyethylene, polypropylene, polyacrylonitrile, PVB, silicone, le tse ling tse ngata.

Hangata, mokokotlo o sa khaotseng oa polymer o sebelisetsoang ho lokisa li-plastiki o na le liathomo tsa carbon. Mohlala o bonolo ke polyethylene ('polythene' in British English), eo yuniti ea eona e pheta-phetoang e thehiloeng ho ethylene monomer. Leha ho le joalo, mehaho e meng e teng; mohlala, likarolo tse kang silicon li etsa lisebelisoa tse tloaelehileng tse kang li-silicone, mehlala e le Silly Putty le sealant e sa keneleng metsi. Oksijene e boetse e fumaneha hangata ka mokokotlong oa polymer, joalo ka polyethylene glycol, polysaccharides (ka libopo tsa glycosidic), le DNA (ka li-phosphodiester bond).

Li-polymers li ithutoa mafapheng a k'hemistri ea polymer, fisiks ea polymer, le saense ea polymer…

Polymerization ke mokhoa oa ho kopanya limolek'hule tse ngata tse nyane tse tsejoang ka hore ke li-monomers ho ketane kapa marang-rang a kopaneng. Nakong ea ts'ebetso ea polymerization, lihlopha tse ling tsa lik'hemik'hale li ka 'na tsa lahleha ho tloha monomer e' ngoe le e 'ngoe. Ho joalo, ho etsa mohlala, ho polymerization ea PET polyester. Li-monomers ke terephthalic acid (HOOC-C6H4-COOH) le ethylene glycol (HO-CH2-CH2-OH) empa unit e pheta-phetoang ke -OC-C6H4-COO-CH2-CH2-O-, e lumellanang le motsoako oa li-monomers tse peli tse nang le tahlehelo ea limolek'hule tse peli tsa metsi. Karolo e ikhethileng ea monoma e 'ngoe le e' ngoe e kenyellelitsoeng ho polymer e tsejoa e le yuniti e pheta-phetoang kapa masala a monomer…

https://en.wikipedia.org/wiki/Synthetic_rubber

Rabara ea maiketsetso ke mofuta ofe kapa ofe oa elastomer ea maiketsetso, ka linako tsohle e leng polymer. Elastomer ke thepa e nang le thepa ea mochini (kapa ea lintho tse bonahalang) eo e ka senyehang haholo tlas'a khatello ea maikutlo ho feta lisebelisoa tse ngata 'me e ntse e khutlela boholong ba eona ba pele ntle le ho senyeha ho sa feleng.Ho hlahisoa li-rabara tse ka bang limilione tse likete tse 15 selemo le selemo,' me ea seo. chelete ea bobeli borarong ke ea maiketsetso...

Natural vs rabara ea maiketsetso

Rabara ea tlhaho, e tsoang ho latex, haholo-holo ke poly-cis-isoprene e nang le mesaletsa ea litšila. Le hoja e bontša lintho tse ngata tse babatsehang, rabara ea tlhaho hangata e tlaase ho li-rabara tsa maiketsetso, haholo-holo mabapi le botsitso ba eona ba mocheso le ho lumellana ha eona le lihlahisoa tsa peterole.

Rabara ea maiketsetso e entsoe ka polymerization ea mefuta e fapaneng ea li-precursors tse thehiloeng ho peterole tse bitsoang monomers. Li-rubber tsa maiketsetso tse atileng ka ho fetisisa ke li-rabara tsa styrene-butadiene (SBR) tse nkiloeng ho copolymerization ea styrene le 1,3-butadiene. Liraba tse ling tsa maiketsetso li lokiselitsoe ho tloha ho isoprene (2-methyl-1,3-butadiene), chloroprene (2-chloro-1,3-butadiene), le isobutylene (methylpropene) e nang le karolo e nyenyane ea isoprene bakeng sa ho hokahanya. Li-monomer tsena le tse ling li ka tsoakoa ka likarolo tse fapaneng ho kopanngoa ho hlahisa lihlahisoa tse nang le mefuta e mengata ea 'mele, ea mochini le ea lik'hemik'hale. Li-monomers li ka hlahisoa li hloekile 'me ho eketsoa ha litšila kapa li-additives li ka laoloa ke moralo ho fana ka thepa e nepahetseng. Polymerization ea li-monomers tse hloekileng li ka laoloa hamolemo ho fana ka karolo e lakatsehang ea cis le trans double bond…