摘要:
A circuit for increasing the stability of a sawtooth signal in regard to thermal drift comprises a conventional generator whose output is controlled by a loop circuit constituted by a switch controlled in opposition with respect to a switch connected in shunt on an integration capacitor, a low-pass filter having a cut-off frequency determined to select substantially the d.c. component and an operational amplifier network for determining the gain of the loop circuit which consequently produces a voltage corresponding to the mean value of the signal. The direct-current voltages and the passive components are so determined that the mean value of the sawtooth signal preferably corresponds to the reference zero potential.
摘要:
Described herein are compositions comprising a low abrasive silica and a fine silica thickener, and suspended elements, along with methods for making and using the same.
摘要:
An oral composition comprising an active component and an adhesive film forming component comprising bleached shellac and shellac wax for the treatment of teeth.
摘要:
Oral compositions are provided that comprise a propolis extract; an oral care active compound chosen from: a cationic antibacterial agent, an anti-attachment agent, a biofilm disruption agent, and an anti-inflammatory agent; and a source of fluoride ions. Further, in certain embodiments, the oral composition comprises an anionic polymeric linear polycarboxylate. The oral composition can be in a form of a mouth rinse, a dentifrice, a confectionary, a medicament, or a film. Methods of making and using the oral compositions are also provided.
摘要:
A bleaching agent is described particularly effective for low temperature bleaching of laundry while avoiding concomitant dye damage of bleach-sensitive dyed fabrics. The bleaching agent comprises particles of monoperoxyphthalic acid (MPPA) and/or a water-soluble salt thereof, said particles being at least partially coated with an effective amount of a substantially aliphatic fatty acid mixture comprised of at least 16% and no more than about 40%, by weight, of fatty acids having a chain length of from 20 to 22 carbon atoms, said mixture being substantially free of fatty acids having less than 14 carbon atoms.
摘要:
The present invention is directed to a dual phase mouth wash composition comprising a hydrophilic phase, a hydrophobic phase, and a hydrotrope, and methods of use thereof. The hydrophilic and hydrophobic phases remain separated and form a temporary emulsion when mixed. The emulsion spontaneously reverts back to the two original phases after rest, without the formation of a emulsion.
摘要:
The present invention is directed to a dual phase mouth wash composition comprising a hydrophilic phase, a hydrophobic phase, and a hydrotrope, and methods of use thereof. The hydrophilic and hydrophobic phases remain separated and form a temporary emulsion when mixed. The emulsion spontaneously reverts back to the two original phases after rest, without the formation of a emulsion.
摘要:
The invention provides high water content dentifrice compositions comprising a silica abrasive and a component containing microcrystalline cellulose and carboxymethylcellulose, as well as methods of making and using the same.
摘要:
An oral composition comprising an active component and an adhesive film forming component comprising bleached shellac and shellac wax for the treatment of teeth.
摘要:
An articulated device, consists of three parts (2, 5, 6), for permitting to wear or take off a wrist-watch (1) connected to a strap (7), of a sole length. The first part (2) of this device is so shaped as to receive and partially protect the watch (1). Said part (2) is formed by two parts (3, 4). The part (3) shaped as an annular frame is hinged, at one of its ends, to the intermediate part (5), which at its other end is pivotally connected, to the part (6), so that the parts (5, 6) can rotate in opposite directions to each other. The part (6), at one of its ends is hinged to the end portion (7b) of the strap (7), while the other end (7a) of this latter is hinged to the opposite end of the part (3). The hinge axes (x--x, y--y, w--w, z--z) of the parts (2, 5, 6) are parallel to each other. The articulated device comprises a spring locking means (15 to 22) including a manually controllable releasing means.