نتایج جستجو برای: 84606 185622 moghadam
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introduction small and medium-sized enterprises (smes) bring a broad range of benefits beyond growth of national income, providing important opportunities for employment, and are a key source of an outlet for entrepreneurial creativity and ideas. however, it is estimated that smes are responsible around 60 percent of carbon dioxide emissions and 70 percent of all pollution globally. therefore, ...
Optoelectronic devices, such as solar cells and light-emitting diodes, well transparent electronic rely on efficient light–matter interactions usually require top electrodes that are deposited onto a device layer stack. Magnetron sputtering, established in the coating industry, is most common technique to deposit materials. Nevertheless, this process may result irreversible damage underlying se...
•MOFs containing [2]rotaxane molecular shuttle ligands•Solvent-assisted linker exchange to access highly crystalline MOFs•Co-ligands dictate the translational position of rotaxane macrocycle•2H solid-state NMR reveals interaction two dynamic components Molecular rotors, motors, and mechanically interlocked molecules are all that can be utilized assemble more complex machines. In order do this m...
•COFs are shown to be frequently unstable in-plane mechanical shear•A method of COF monolith formation that enables hierarchical porosity is presented•Hierarchical mesopores enable improved gas uptake and selectivity•Hierarchical can accurately modeled via lattice-gas methods Porous materials used industrially as macroscopic pellets exhibiting interstitial space porosity. Although conventional ...
•Highly flexible 18-crown-6-ether functionality was embedded into a chiral Zr-MOF•An unprecedented solid-state topology transition behavior observed•The process captured by single-crystal and powder X-ray diffraction•The resultant Zr-MOF can enantioseparate lansoprazole, with up to 98% ee Zr-carboxylate metal-organic frameworks (MOFs) are well known as structurally robust materials strong coord...
Militant groups, like all organizations, face crucial decisions about the strategies that they employ. In this article, we assess why some militant organizations successfully diversify into multiple tactics while others limit themselves to just one or a few. This is an important puzzle because militants with increasingly diversified tactics are more likely to stretch counterterrorist defenses, ...
A continuous microflow system was developed with efficient catalyst recycling for a Mizoroki-Heck reaction of iodobenzene with butyl acrylate, using a low-viscosity ionic liquid ([bmim]NTf2) as the reaction medium. Using a CPC CYTOS Lab System as the microreaction apparatus, in combination with an originally developed microextraction/catalyst recycling system, the reaction medium, which contain...
در این مطالعه، به منظور بررسی تغییرات خاکشناختی منطقة حسینآباد حپشلو در اثر کشت آتریپلکس، پس از بازدید عرصة مورد مطالعه، دو سایت نزدیک به هم هر یک به مساحت یک هکتار انتخاب شد، که در یک سایت بوتهکاری با گونة آتریپلکس کانسنس انجام شده بود، و سایت مجاور، که شاهد درنظر گرفته شد، فاقد بوته بود. با روش تصادفی- سیستماتیک و با استقرار 3 ترانسکت به طول 100 متر در هر سایت نمونهبرداری انجام شد. در سا...
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