نتایج جستجو برای: in situ crystallization
تعداد نتایج: 16986145 فیلتر نتایج به سال:
In situ investigations on the nucleation and crystallization processes are essential for understanding of the formation of solids. Hence, the results of such experiments are prerequisites for the rational synthesis of solid materials. The in situ approach allows the detection of precursors, intermediates, and/or polymorphs, which are mainly missed in applying ex situ experiments. With a newly d...
Solid-state NMR spectroscopy is a well-established and versatile technique for studying the structural and dynamic properties of solids, and there is considerable potential to exploit the power and versatility of solid-state NMR for in-situ studies of chemical processes. However, a number of technical challenges are associated with adapting this technique for in-situ studies, depending on the p...
Acta Crystallographica Section A: Foundations and Advances publishes articles reporting fundamental advances in all areas of crystallography in the broadest sense. This includes metacrystals such as photonic or phononic crystals, i.e. structures on the mesoor macroscale that can be studied with crystallographic methods. The central themes are, on the one hand, experimental and theoretical studi...
Despite significant progress in high-throughput methods in macromolecular crystallography, the production of diffraction-quality crystals remains a major bottleneck. By recording diffraction in situ from crystals in their crystallization plates at room temperature, a number of problems associated with crystal handling and cryoprotection can be side-stepped. Using a dedicated goniometer installe...
این پژوهش به منظور بررسی تغییرات ترکیب شیمیایی و ارزش غذایی سیلوی سورگوم با افزودن مولتی آنزیم و مخمر به روش in vitro و in situ انجام شد. بدین منظور علوفه سورگوم در مرحله شیری بودن دانه ها در خرداد ماه برداشت و جهت سیلو نمودن به قطعات 4 - 2 سانتی متری خرد گردید. سپس با استفاده از مولتی آنزیم در سه سطح(صفر،3 و 6 گرم در کیلوگرم ماده خشک) و مخمر ساکارومایسیس سرویسیه در سه سطح(صفر، 5/2 و 5گرم در کی...
a new method was used to prepare abs/pa6 blends by in situ polymerization and compatibilization method. in this process, ε-caprolactam monomer was polymerized in presence of abs via activated anionic polymerization to produce pa6. the main ingredients of the reaction mixture included: monomer ()ε-caprolactam), catalyst na-caprolactamate), microactivator hdi)( and macro-activator sma)(. then, in...
Atomistic understanding of crystallization in solids is incomplete due to the lack of appropriate materials and direct experimental tools. Metallic glasses possess simple metallic bonds and slow crystallization kinetics, making them suitable to study crystallization. Here, we investigate crystallization of metallic glass-forming liquids by in-situ heating metallic glass nanorods inside a transm...
The Microcapillary Protein Crystallization System (MPCS) embodies a new semi-automated plug-based crystallization technology which enables nanolitre-volume screening of crystallization conditions in a plasticware format that allows crystals to be easily removed for traditional cryoprotection and X-ray diffraction data collection. Protein crystals grown in these plastic devices can be directly s...
این پژوهش به منظور بررسی تغییرات ترکیبات شیمیایی و ارزش غذایی سیلوی کاه کنجد با افزودن اوره، ملاس و آنزیم به روش in vitro و in situ انجام شد. بدین منظور کاه کنجد جمع آوری و جهت سیلو نمودن به قطعات 4-2 سانتی متری خرد گردید. سپس با استفاده از اوره( 5 درصد)، ملاس(10 درصد) و آنزیم ( 3 گرم به ازای هر کیلوگرم ماده خشک) قبل از سیلو مخلوط و درون سطل های 5 کیلویی پلاستیکی سیلو شدند و بعد از 45 روز باز ش...
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