نتایج جستجو برای: high purity
تعداد نتایج: 2067265 فیلتر نتایج به سال:
Nanoscale patterning of fullerene materials with peculiar intrinsic electronic and optical properties is crucial importance for their widespread applications. However, it remains a daunting challenge current methods that suffer from both complicated lithography procedures additives photopolymers or photochemicals detrimental to the pristine fullerene. Here, we developed contamination-free laser...
We propose a simple five-layer structure for creating red structural color, which has high color purity and brightness. The design is based on the superposition of silver substrate multilayer silicon material. Absorption at shorter wavelengths effectively guaranteed, reflection longer well enhanced. peak reflectivity 91% colorimetric 0.9. Moreover, designed displays angle-invariant performance ...
intoduction: therapeutic radiopharmaceuticals are radiolabeled molecules to deliver sufficient doses of ionizing radiation to specific disease sites such as bone metastases, brain and liver tumors and bone marrows malignancies including multiple myeloma. among some therapeutic radiopharmaceuticals, 166ho-1,4,7,10 -tetraazacyclo dodecane-1,4,7,10 tetraethylene phosphonic acid (166ho-dotmp) is us...
The isolation of semiconducting carbon nanotubes (CNTs) to ultrahigh (ppb) purity is a prerequisite for their integration into high-performance electronic devices. Here, a method employing column chromatography is used to isolate semiconducting nanotubes to 99.9% purity. The study finds that by modifying the solution preparation step, both the metallic and semiconducting fraction are resolved a...
The preparation of stable amorphous pemetrexed disodium of pharmaceutical purity as well as the process optimization for the preparation of the hemipentahydrate form of pemetrexed disodium are described. Analytical methods for the polymorphic and chemical purity studies of pemetrexed disodium and pemetrexed diacid forms were developed. The physicochemical properties of the amorphous and hydrate...
A method utilizing aminopropyl bonded phase (Bond Elut) columns has been developed to separate lipid mixtures into individual classes in high yield and purity. Up to ten lipid mixtures can be processed in 1 hr and the columns are reusable after suitable washing. Although the method was developed with standard lipid mixtures, it was shown that it is also applicable to biological extracts. Due to...
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