Abstract: A power tool, comprises an activation trigger, an impact assembly comprising a hammer and an output shaft, a motor arranged to drive the hammer of the impact assembly, an impact sensor configured to sense one or more impact events of the impact assembly, and a motor controller configured to activate the motor in response to a user input via the activation trigger, determine an impacting state of the impact assembly based on the impact sensor output, in response to determining the impacting state of the impact assembly, to measure an impact progression of the impact assembly based on the impact sensor output, and deactivate the motor in response to measuring a predefined impact progression.

Abstract: The present invention discloses coated hydrophobic polyphenol nanoparticles, preparation method therefor and application thereof. The preparation method for coated hydrophobic polyphenol nanoparticles includes: (1) obtaining a hydrophobic polyphenol nanoparticles suspension; (2) injecting a catechin aqueous solution and a metal salt aqueous solution into the hydrophobic polyphenol nanoparticles suspension to obtain a composite nanoparticles suspension; (3) removing excess catechin and metal ions from the composite nanoparticles suspension to obtain a coated hydrophobic polyphenol nanoparticles suspension. The present invention provides an application of the coated hydrophobic polyphenol nanoparticles in the preparation of pectin gel. The coated hydrophobic polyphenol nanoparticles exhibit significantly enhanced biological activity and long-term stability, developing a pectin gel with long-term stability.

Abstract: A method for extracting and purifying Dendrobium officinale polysaccharides comprises following steps: (1) fully disperse Dendrobium officinale powder in pure water to obtain crude liquid; (2) removing insoluble impurities from the crude liquid through a microfiltration membrane to obtain permeate 1 and retentate 1; (3) performing macroporous ultrafiltration treatment of the permeate 1 and collect permeate 2 and retentate 2; (4) adding an aqueous solution of edible alkali metal inorganic salt to the retentate 2, fully stirring and dissolving to obtain polysaccharide crude liquid, performing macroporous ultrafiltration treatment and collecting permeate 3 and retentate 3; (5) combining the permeate 2 and permeate 3, adding the combined permeate into an electrodialysis device for desalination, and collecting dilute solution and concentrated solution; (6) performing microporous ultrafiltration treatment of the dilute solution and collect retentate 4 and permeate 4; (7) carrying out freeze-drying of the retentate

Abstract: This invention provides a method for preparing electrospraying particles to improve stability of polyphenol including the following steps: preparing a pectin-silica composite; adding polyphenolic compounds into the pectin-silica composite to prepare a core solution; and coaxial electrospraying the core solution and a shell solution to prepare electrospraying particles loaded polyphenol. This method utilizes a pectin-silica composite as a polyphenol loading carrier, improves the encapsulating efficiency of polyphenols, reduces the contact probability of polyphenols with oxygen and water, and improves the stability of polyphenols; and an acidic aqueous solution is used as a shell solution to synergize with the pectin-silica composite to further improve the stability of polyphenols.

Abstract: A method for extracting and purifying Dendrobium officinale polysaccharides comprises following steps: (1) fully disperse Dendrobium officinale powder in pure water to obtain crude liquid; (2) removing insoluble impurities from the crude liquid through a microfiltration membrane to obtain permeate 1 and retentate 1; (3) performing macroporous ultrafiltration treatment of the permeate 1 and collect permeate 2 and retentate 2; (4) adding an aqueous solution of edible alkali metal inorganic salt to the retentate 2, fully stirring and dissolving to obtain polysaccharide crude liquid, performing macroporous ultrafiltration treatment and collecting permeate 3 and retentate 3; (5) combining the permeate 2 and permeate 3, adding the combined permeate into an electrodialysis device for desalination, and collecting dilute solution and concentrated solution; (6) performing microporous ultrafiltration treatment of the dilute solution and collect retentate 4 and permeate 4; (7) carrying out freeze-drying of the retentate

Abstract: The invention discloses a method for preparing a water-soluble phytosterol nano-dispersion system with intestinal targeted release function, which comprises the following steps: preparing a phytosterol solution; preparing an ethanol aqueous solution containing pectin; then adding zein to obtain a zein pectin solution; mixing the phytosterol solution and the zein pectin solution by means of ultrasonic treatment to obtain a nanoparticle dispersion liquid; rotavaping the nano-particle dispersion liquid to remove ethanol and water to obtain a zein/pectin loaded phytosterol nano-dispersion system. In this invention, not only an ultrasonic method and an anti-solvent method are adopted, but also a pectin component is added with zein as an entrapping agent, which ensures an effective entrapping of phytosterol by zein while further facilitating to form a more compact interface structure and improving a stability of the nano-dispersion system.

Abstract: This invention provides a method for preparing electrospraying particles to improve stability of polyphenol including the following steps: preparing a pectin-silica composite; adding polyphenolic compounds into the pectin-silica composite to prepare a core solution; and coaxial electrospraying the core solution and a shell solution to prepare electrospraying particles loaded polyphenol. This method utilizes a pectin-silica composite as a polyphenol loading carrier, improves the encapsulating efficiency of polyphenols, reduces the contact probability of polyphenols with oxygen and water, and improves the stability of polyphenols; and an acidic aqueous solution is used as a shell solution to synergize with the pectin-silica composite to further improve the stability of polyphenols.

Abstract: A saw for use with a blade coolant that includes a main body, a blade supported for rotation by the main body, and a drive member coupled to the blade and operable to rotate the blade. The saw further includes a coolant supply that is removably coupled to the main body and configured to store the blade coolant. A valve is coupled to the coolant supply, and the valve includes a valve member movable between an open position and a closed position. The valve member is held in the open position when the coolant supply is connected to the main body of the saw and the valve member is biased toward the closed position when the coolant supply is disconnected from the main body of the saw.

Abstract: The invention is a tamperproof electronic voting machine with intuitive user interfaces that is accessible and usable by voters with a wide range of disabilities, including those voters that are blind, deaf, blind deaf, or have dexterity disabilities. The voting machine preferably records votes through a button based interface or an ink probe interface. The invention accommodates cumulative voting and instant runoff voting.

Abstract: A tamper proof electronic voting machine with intuitive user interfaces.

Abstract: The present invention is an ink-based electronic voting apparatus that generates a paper ballot for every voter. The voter marks a ballot with a probe as he/she would with a conventional ink-based system. In one embodiment, the paper ballot is situated underneath the surface of an input board electrically connected to a computer. A vote is cast when the probe is depressed onto the ballot at a designated input point. The electrical interaction between the probe and the input board generates a vote signal for recording and causes ink to be released from the probe to mark a corresponding spot on the paper ballot. As such, votes are electronically recorded for fast tabulation while paper ballots are generated for manual and/or optical scanner recounts to safeguard against computer errors and tampering. Furthermore the voting apparatus has a built-in mechanism to prevent undervoting and overvoting and thus increases valid votes.

Abstract: The present invention is an ink-based electronic voting apparatus that generates a paper ballot for every voter. The voter marks a ballot with a probe as he/she would with a conventional ink-based system. In one embodiment, the paper ballot is situated underneath the surface of an input board electrically connected to a computer. A vote is cast when the probe is depressed onto the ballot at a designated input point. The electrical interaction between the probe and the input board generates a vote signal for recording and causes ink to be released from the probe to mark a corresponding spot on the paper ballot. As such, votes are electronically recorded for fast tabulation while paper ballots are generated for manual and/or optical scanner recounts to safeguard against computer errors and tampering. Furthermore the voting apparatus has a built-in mechanism to prevent undervoting and overvoting and thus increases valid votes.

Abstract: The present invention is an ink-based electronic voting apparatus that generates a paper ballot for every voter. The voter marks a ballot with a probe as he/she would with a conventional ink-based system. In one embodiment, the paper ballot is situated underneath the surface of an input board electrically connected to a computer. A vote is cast when the probe is depressed onto the ballot at a designated input point. The electrical interaction between the probe and the input board generates a vote signal for recording and causes ink to be released from the probe to mark a corresponding spot on the paper ballot. As such, votes are electronically recorded for fast tabulation while paper ballots are generated for manual and/or optical scanner recounts to safeguard against computer errors and tampering. Furthermore the voting apparatus has a build-in mechanism to prevent undervoting and overvoting and thus increases valid votes.

Abstract: The present invention is an ink-based electronic voting apparatus that generates a paper ballot for every voter. The voter marks a ballot with a probe as he/she would with a conventional ink-based system. In one embodiment, the paper ballot is situated underneath the surface of an input board electrically connected to a computer. A vote is cast when the probe is depressed onto the ballot at a designated input point. The electrical interaction between the probe and the input board generates a vote signal for recording and causes ink to be released from the probe to mark a corresponding spot on the paper ballot. As such, votes are electronically recorded for fast tabulation while paper ballots are generated for manual and/or optical scanner recounts to safeguard against computer errors and tampering. Furthermore the voting apparatus has a build-in mechanism to prevent undervoting and overvoting and thus increases valid votes.