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ball milling biomolecular

  • High-Energy Ball Milling as Green Process To Vitrify

     · In this study the suitability of high-energy ball milling was investigated with the aim to vitrify tadalafil (TD) and improve its bioavailability. To achieve this goal pure TD as well as binary mixtures composed of the drug and Soluplus (SL) were coprocessed by high-energy ball milling. Modulated differential scanning calorimetry (MDSC) and X-ray powder diffraction (XRD) demonstrated that

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  • Preparation of Micrometer to SubmicrometerSized

     · ball-milling process that has been used to create micrometer-to sub-micrometer-sized mesoporous silica particles starting from a silica xerogel prepared by a surfactant self-assembly sol–gel process. We have studied various milling conditions such as milling

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  • "Variations in biocorona formation related to defects in

    Ball-milling utilizes mechanical stress to modify properties of carbon nanotubes (CNTs) including size capping and functionalization. Ball-milling however may introduce structural defects resulting in altered CNT-biomolecule interactions. Nanomaterial-biomolecule interactions result in the formation of the biocorona (BC) which alters nanomaterial properties function and biological

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  • Variations in biocorona formation related to defects in

     · Ball-milling utilizes mechanical stress to modify properties of carbon nanotubes (CNTs) including size capping and functionalization. Ball-milling however may introduce structural defects

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  • Researchers Develop Approach to Synthesize Ammonia in

     · Milling titanium powder in a vibratory ball mill with a stainless steel milling vessel modified to allow a steady gas flow of nitrogen and hydrogen resulted in the formation of titanium nitride (TiN) and the continuous synthesis of ammonia without the need for external heating or pressuring.

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  • Robust Buchwald–Hartwig amination enabled by ball-milling

     · Recently ball milling and other automated mechanochemical techniques have been explored as a means to conduct solvent-minimised reactions with several recent examples demonstrating additional opportunities to synthetic chemists such as decreased reaction times increased selectivity or differing reaction outcomes over solution results. 4 Indeed several palladium mediated processes have been explored through ball-milling. 5 It is also known that solid-state synthesis by ball-milling

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  • Spectrochimica Acta Part A Molecular and Biomolecular

     · Note that this compound (prepared by ball milling of LiBH 4 and KBH 4 in a ratio of 2 1 37 ) also contains an excess of LiBH 4. Table 1 List of the borohydrides whom IR spectra are included in the data collection. For each compound the filename and the reference from where the IR spectrum was taken (when available) are shown.

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  • Zinc-Mediated Reductive Cyclization of 60 Fullerene with

     · The zinc-mediated solvent-free reaction of 60 fullerene with enones and water and the subsequent treatment of a base afford various 60 fullerene-fused cyclopentanols using the ball-milling technique. A plausible reaction mechanism is proposed on the basis of control experiments. In addition the formed 60 fullerene-fused cyclopentanols can be further dehydrated to provide 60 fullerene

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  • High-Energy Ball Milling as Green Process To Vitrify

     · In this study the suitability of high-energy ball milling was investigated with the aim to vitrify tadalafil (TD) and improve its bioavailability. To achieve this goal pure TD as well as binary mixtures composed of the drug and Soluplus (SL) were coprocessed by high-energy ball milling. Modulated differential scanning calorimetry (MDSC) and X-ray powder diffraction (XRD) demonstrated that

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  • Variations in biocorona formation related to defects in

    Increased ball-milling time of SWCNTs resulted in enhanced structural defects. Following incubation in normal mouse serum label-free quantitative proteomics identified differences in the biomolecular content of the BC due to the ball-milling process.

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  • Planetary ball-mill as a versatile tool to controlled

     · In this study the mass of the sample (m p = 5 g) and the disk velocity (W d = 600 RPM) were fixed to evaluate the energy supplied by the ball-mill (Fig. 1 Table 1).Once the energy supplied is known different milling conditions can be compared only as a function of energy e.g. 15 min of milling using silicon nitride (Si 3 N 4 3.3 J/g) 20 min of milling using stainless steel (Fe 11.2 J/g

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  • Amorphization of organic compounds by ball milling

     · We have analyzed the effect of ball milling on a sample obtained by slow cooling from the liquid state. As an example in Figure 5 curve c we show the DSC curve for a sample milled for 20 h. The glass transition appears at 335 K and the crystallization takes place in two steps a smooth process just after the glass transition and the other

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  • Ball mill assisted synthesis of Na3MnCO3PO4 nanoparticles

     · Ball milling is hence widely used as a mechano-chemical synthesis method for fabrication of unique nanostructures required for battery electrodes. Franger et al. 21 have made a comparison between different LiFePO 4 synthesis routes such as solid-state reaction co-precipitation in aqueous medium hydrothermal method and mechano-chemical

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  • A Red‐Phosphorous‐Assisted Ball‐Milling Synthesis of Few

     · The use of MXenes is expected to increase by reducing their lateral size to the nanoscale. Herein using Ti 3 C 2 T x (T=O OH F) MXenes as an example we show that μm-sized MXenes can be reduced in size to ≈6 nm nanodots by ball-milling with red phosphorous (P). It is remarkable almost all starting MXenes were converted to nanodots with this method.

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  • Wetting properties of silicon films from alkyl-passivated

     · Author information (1)Department of Chemical and Biomolecular Engineering Tulane University 300 Lindy Boggs New Orleans LA 70118 USA. A facile and efficient method using high energy ball milling (HEBM) to produce surfaces with a static and advancing contact angle in the superhydrophobic regime consisting of alkyl-passivated crystalline

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  • Preparation and characterization of ball‐milled Nafion

     · A method for producing Nafion® powder from commercially available pellets and using this powder to produce membranes is described. A description of particle size distribution chemical composition and thermal properties of Nafion® powders prepared by high‐energy ball milling

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  • Thermal Stability of High-Energy Ball Milled Al Alloys

     · Abstract. High-energy ball milling (HEBM) is a non-equilibrium processing techniques that imparts extended solid solubilities of alloying elements and grain refinement to the nanoscale level this results in a thermodynamically metastable system.

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  • Nanostructures from Reactive High‐Energy Ball Milling

     · Nanostructures from Reactive High-Energy Ball Milling Brian S. Mitchell Tulane University Department of Chemical and Biomolecular Engineering 300 Lindy Boggs Building New Orleans Louisiana USA

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  • Consolidation of High-Energy Ball Milled Nanocrystalline

     · High-energy ball milling (HEBM) of Al and Al based alloys results in the nanocrystalline alloys in the form of powder which subsequently needs to be consolidated for engineering applications as well as for the investigation of associated properties. Consolidation of HEBM nanocrystalline alloy powders is

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  • An Overview of High-energy Ball Milled Nanocrystalline

    Dr. Rajeev Kumar Gupta is an Assistant Professor at the Department of Chemical Biomolecular Engineering at the University of Akron Ohio USA. He earned his PhD degree in Materials Engineering from Monash University Australia in 2010 and his BTech in Materials Metallurgical Engineering from the Indian Institute of Technology Kanpur India.

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  • Spectrochimica Acta Part A Molecular and Biomolecular

     · Note that this compound (prepared by ball milling of LiBH 4 and KBH 4 in a ratio of 2 1 37 ) also contains an excess of LiBH 4. Table 1 List of the borohydrides whom IR spectra are included in the data collection. For each compound the filename and the reference from where the IR spectrum was taken (when available) are shown.

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  • Fast and Selective Dehydrogenative C–H/C–H Arylation

     · Robust Buchwald–Hartwig amination enabled by ball-milling. Organic Biomolecular Chemistry 2019 17 (7) . DOI 10.1039/C8OB01781F. Joel Andersen James Brunemann James Mack. Exploring stable sub-ambient temperatures in mechanochemistry via a diverse set of enantioselective reactions.

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  • Zinc-Mediated Reductive Cyclization of 60 Fullerene with

     · The zinc-mediated solvent-free reaction of 60 fullerene with enones and water and the subsequent treatment of a base afford various 60 fullerene-fused cyclopentanols using the ball-milling technique. A plausible reaction mechanism is proposed on the basis of control experiments. In addition the formed 60 fullerene-fused cyclopentanols can be further dehydrated to provide 60 fullerene

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  • Amorphization of organic compounds by ball milling

     · We have analyzed the effect of ball milling on a sample obtained by slow cooling from the liquid state. As an example in Figure 5 curve c we show the DSC curve for a sample milled for 20 h. The glass transition appears at 335 K and the crystallization takes place in two steps a smooth process just after the glass transition and the other

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  • Facile solid state ball milling as a green strategy to

     · The ball-mill was a Retsch MM 2000 swing mill with a 10 cm 3 stainless steel double-walled beaker with fittings for circulating coolants. Two stainless steel balls of 12 mm diameter were used. Ball-milling was performed at 20 225 Hz frequency usually at room temperature (without circulating liquid and the temperature did not rise above 30 °C

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  • A Red‐Phosphorous‐Assisted Ball‐Milling Synthesis of Few

     · A Red-Phosphorous-Assisted Ball-Milling Synthesis of Few-Layered Ti 3 C 2 T x (MXene) Nanodot Composite Dr. Tianran Zhang Department of Chemical and Biomolecular Engineering National University of Singapore 10 Kent Ridge Crescent Singapore 119260 Singapore.

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  • Preparation of Micrometer‐ to Sub‐micrometer‐Sized

     · Preparation of Micrometer- to Sub-micrometer-Sized Nanostructured Silica Particles Using High-Energy Ball Milling. J. Eric Hampsey Department of Chemical and Biomolecular Engineering Tulane University New Orleans Louisiana 70118. Search for more papers by this author.

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  • A Red‐Phosphorous‐Assisted Ball‐Milling Synthesis of Few

     · A Red-Phosphorous-Assisted Ball-Milling Synthesis of Few-Layered Ti 3 C 2 T x (MXene) Nanodot Composite Dr. Tianran Zhang Department of Chemical and Biomolecular Engineering National University of Singapore 10 Kent Ridge Crescent Singapore 119260 Singapore.

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  • Silicon nanoparticles synthesised through reactive high

     · Chemical Biomolecular Engineering Tulane University New Orleans LA 70118 USA (Received 1 July 2014 final version received 15 November 2014) Alkyl-terminated silicon nanoparticles (SiNPs) were prepared through reactive high-energy ball milling with contamination of iron from the steel milling materials.

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  • Silicon nanoparticles synthesised through reactive high

     · Chemical Biomolecular Engineering Tulane University New Orleans LA 70118 USA (Received 1 July 2014 final version received 15 November 2014) Alkyl-terminated silicon nanoparticles (SiNPs) were prepared through reactive high-energy ball milling with contamination of iron from the steel milling materials.

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  • Silicon nanoparticles synthesised through reactive high

     · Chemical Biomolecular Engineering Tulane University New Orleans LA 70118 USA (Received 1 July 2014 final version received 15 November 2014) Alkyl-terminated silicon nanoparticles (SiNPs) were prepared through reactive high-energy ball milling with contamination of iron from the steel milling materials.

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