نتایج جستجو برای: anti solvent
تعداد نتایج: 416275 فیلتر نتایج به سال:
We report polarization coherent anti-Stokes Raman scattering (P-CARS) microscopy that allows vibrational imaging with high sensitivity and spectral selectivity. The nonresonant background signals from both Raman scatterers and the solvent are efficiently suppressed in P-CARS microscopy. We demonstrate P-CARS imaging of unstained cells based on the contrast of the protein amide I band.
Toxicodendron dermatitis results from a reaction to an oil soluble oleoresin that is present in many parts of the poison ivy and poison oak plants. Prophylactic measures include avoidance, protective clothing, barrier creams and hyposensitization. Treatments include washing the area immediately with a solvent suitable for lipids and the use of anti-inflammatory agents, especially corticosteroids.
Sym-triazines have been documented for their antitumor, antimicrobial and anti-cancer actions. The present work aims to derive a variety of 1,3,5-triaryl-1,3,5-hexahydrotriazine using ultrasound assisted reactions from the reactions of aryl amines with aqueous formaldehyde. Furthermore, a special study on the different solvents and revealed that mixture of water and ethanol was found to be the ...
مقدمه : توکسوپلاسما گوندی یکی از شایع ترین تک یاخته های انگلی انسان و حیوان در تمام کشور های جهان است. در این مطالعه هدف تشخیص توکسوپلاسما در مغز رت های وحشی شهر تهران با استفاده از روش های رنگ آمیزی گیمسا، تزریق صفاقی و خوراکی به موش سوری بود. مواد و روش کار: تعداد 40 سر رت وحشی از مناطق مختلف تهران جمع آوری شد. از مغز رت های وحشی اسمیر روی لام تهیه و با رنگ گیمسا رنگ آمیزی شد. در روش دوم از ...
A simple protocol for the efficient preparation of aryl and heteroaryl substituted dihydropyrimidinone has been achieved via initial Knoevenagel, subsequent addition, and final cyclization of aldehyde, ethylcyanoacetate, and guanidine nitrate in the presence of piperidine as a catalyst in solvent-free under microwave irradiation. The synthesized compounds showed a good anti-inflammatory, antiba...
A reagent-controlled, diastereo- and enantioselective synthesis of anti- and syn-β-hydroxy-α-phenyl carboxylates has been achieved by the proper choice of solvent, temperature, alkoxy group, and amine for the diisopinocampheylboron-mediated asymmetric enolization-aldolization of phenylacetates. The pure diastereomers can be readily separated by column chromatography.
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