46 results about "Surface ph" patented technology

Method and article for providing a rapid, broad spectrum bacterial control, and a rapid and persistent antiviral control on an inanimate surface is disclosed. In the method, a compound or composition capable of lowering surface pH to less than about 4 is applied to the surface, and preferably is allowed to remain on the surface, and the nonvolatile components of the composition can form a barrier film or layer on a treated surface.

Industrial waste derived adsorbents were obtained by pyrolysis of sewage sludge, metal sludge, waste oil sludge and tobacco waste in some combination. The materials were used as media to remove hydrogen sulfide at room temperature in the presence of moisture. The initial and exhausted adsorbents after the breakthrough tests were characterized using sorption of nitrogen, thermal analysis, XRD, ICP, and surface pH measurements. Mixing tobacco and sludges result in a strong synergy enhancing the catalytic properties of adsorbents. During pyrolysis new mineral phases are formed as a result of solid state reaction between the components of the sludges. High temperature of pyrolysis is beneficial for the adsorbents due to the enhanced activation of carbonaceous phase and chemical stabilization of inorganic phase. Samples obtained at low temperature are sensitive to water, which deactivates their catalytic centers.

A method of forming an ink-jet image comprising the steps of: i. ejecting ink compositions from an ink-jet head onto a recording medium; and ii. forming an image, wherein a) the recording medium is a porous type medium having a porous ink absorbing layer on a non-water absorptive support, b) the ink-jet head has a plurality of nozzles which eject more than two ink compositions respectively, and one ink composition is a clear ink, and one ink composition is a color ink, c) the clear ink contains water dispersible microscopic resin particles having an average diameter of 10-200 nm of more than 1 weight %, and d) pH of the ink compositions is 6.5-11.0, and an absolute value of a difference, between an ink composition pH and film surface pH of the recording medium, is less than 4.0.

The invention discloses a ruthenium/aluminum oxide catalyst, as well as a preparing method and application thereof. The carrier of the catalyst is Al2O3, and Ru is used as an active ingredient of the catalyst, wherein the loading capacity of the Ru is 3.0% to 8.0%, and the grain diameter of the Ru is 1nm to 5nm. The catalyst has a specific surface area of 100-500m<2>/g, a pore volume of 0.8-1.2ml/g and a pore diameter of 2-50nm. Macro-porous aluminum oxide is used as a carrier precursor, water in micro-pores is effectively removed through baking pre-processing, the surface potential of hydrogen distribution and the pore diameter distribution are changed, and the dispersion degree of the ruthenium is improved. The prepared catalyst is used for the hydrogenation of dimethyl terephthalate (DMT) to prepare dimethyl cyclohexanedicarboxylates (DMCD). The activity of the catalyst is not reduced after being used in a 5000ml autoclave for 20 times. The conversion rate of the DMT is 99.3% to 100%, and the selectivity of the DMCD is 95.5% to 96.4%. Through simple distillation and purification, the purity of the DMCD is bigger than 99.5%. The preparing method has the advantages of mild technical conditions, simple equipment, no emission of three wastes, investment saving, low energy consumption and easy realization of industrialization.

The invention discloses a convex array probe clamping sleeve assembly and a convex array probe assembly. The clamping sleeve assembly includes a clamping sleeve and a solid medical ultrasonic coupling patch; the clamping sleeve is used for clamping the solid medical ultrasonic coupling patch so as to allow an external convex probe to contact a surface of the solid medical ultrasonic coupling patch; the other surface of the solid medical ultrasonic coupling patch faces outward and is used for detection. The solid medical ultrasonic coupling patch can be clamped on the convex array probe; the solid medical ultrasonic coupling patch is used in ultrasonic operation, an output ultrasonic image is clear in a far-field end, an intermediate-field end, and a near-field end; when the solid medical ultrasonic coupling patch is used, the conventional liquid coupling agent can be avoided, and the user experience is improved. The ultrasonic coupling patch is solid and flexible, and is flat and glossy in surface; a moisture retaining liquid adheres to a surface of a solid gel tablet, the surface pH is neutral, and probe sound lens corrosion or rupture can be avoided; the clamping sleeve can protect the probe from falling.

The present invention refers to an ink jet receiving sheet having a surface pH value lower than 5.0 and comprising a support and at least a receiving layer containing a binder selected from the group consisting of gelatin and gelatin derivatives and at least a salt of a metal selected from the IIA and IIB groups of the periodic table of elements or complexes which comprise said metal salts.

The ink jet receiving sheet of the invention provides minimum post printed drop sweating after stressed ageing in the resulting image, still maintaining a good glossiness.

The present invention provides a method and apparatus for measuring the rate of calcium oxalate scale formation in a continuously flowing solution having a pH of approximately 2 to 3, the method comprising measuring the deposition of calcium oxalate scale from the solution on a quartz crystal microbalance s speed. The microbalance has a top surface and a second bottom surface spaced from the solution, wherein the pH of the solution adjacent the microbalance is measured by a surface pH measuring assembly and electrochemically controlled within the range of about 3.5 to 9, Wherein, the working electrode (23) is coated with conductive material or made of conductive material. Hydrogen gas on the working electrode evolved in large quantities at a potential more negative than that required to achieve a pH of 3.5-9 in the solution close to the microbalance.

The invention discloses a cleaning method applicable to components with surface adhesion substance being Ceramic. The method comprises the following steps of 1, conducting chemical cleaning, wherein soaking treatment is conducted on a workpiece through an ammonium hydroxide and hydrogen peroxide solution, wherein the adopted ammonium hydroxide and hydrogen peroxide solution is prepared from H2O2,H2O and NH4OH according to the volume ratio of (2.5-3.5): (3.5-4.5): (0.5-1.5); 2, rinsing the workpiece through pure water; 3, conducting a neutralization reaction through nitric-fluoric acid, wherein the adopted nitric-fluoric acid is prepared from nitric acid and hydrofluoric acid, and the volume ratio of HNO3 to HF to H2O is (17-23): (0.5-1.5): (17-23); 4, conducting wiping; 5, soaking the workpiece in DIWater for 10 minutes or above at the normal temperature; 6, conducting a workpiece surface PH test; 7,conducting ultrasonic oscillation cleaning; 8, conducting a workpiece surface PH test;9, conducting CDA blowing; 10, conducting ultrasonic oscillation cleaning; 11, conducting heating and drying; and 12, conducting natural cooling.

An object of the present invention is to provide a water dispersion paper having quick water dispersion property and high strength (printability) and whose paper surface pH is 6 to 8 (neutral range), and also to provide a water dispersion coated paper designed to ensure quick water dispersion property and prevent discoloration over time.

A water dispersion paper made of wood pulp and/or non-wood pulp, wherein said water dispersion paper is characterized in that purified pulp containing α-cellulose by 88 percent by weight or more accounts for 15 to 95 percent by weight of all pulp, as well as a water dispersion coated paper having a water-soluble coating layer on said water dispersion paper.

A method for making a lithographic printing plate precursor is disclosed comprising the steps of a. providing a lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer, a photopolymerizable coating comprising a photopolymerizable composition, and an overcoat layer comprising a water soluble low molecular weight acid, wherein said overcoat layer has a surface pH-value ranging between 1 to 6; b. image-wise exposing the precursor; c. optionally heating the exposed precursor; d. processing the obtained precursor by applying a gum solution and optionally brushing the precursor, and/or by mounting the precursor on a plate cylinder of a lithographic printing press and rotating the plate cylinder while feeding dampening liquid and/or ink to the coating. The printing plate obtained after imaging and processing in an off-press configuration with a gum solution or in an on-press configuration with fountain solution and ink shows an improved roll-up performance in the start-up of a printing process on a printing press.

The present invention relates to an ammonium ionic sieve, its preparation method and application. Said ammonium ionic sieve is made up by using kaoline modified by modifying agent and distilled water. Its preparation method includes the following steps: a). pulverizing kaoline raw material, grinding and sieving; b). heating the sieved sample in muffle furnace to obtain activated kaoline; c). uniformly mixing the activated kaoline, modifying agent and water and stirring them; d). heating mixture, drying, cooling and soaking the obtained product in distilled water, washing until the sample surface pH value is less than 10; and e). drying the obtained product in drying oven so as to obtain the invented ammonium ionic sieve.

The invention belongs to the technical field of chemical catalysts and relates to a catalyst for preparing isobutene through isobutane dehydrogenation and a preparation method thereof. 0.5-10.0% by mass of silicon oxide is added into an alumina carrier, then the alumina carrier is loaded with vanadium oxide with a vanadium content of 3.0-11.0% by mass and then 0.1-5.0% by mass of an alkali metal or an alkaline earth metal as a cocatalyst is added into the alumina carrier. Silicon oxide is introduced into the alumina carrier so that an alumina carrier pore structure and surface properties are improved and vanadium oxide active site distribution is changed. Through use of an alkali metal and an alkaline earth metal, catalyst surface pH and electron properties are improved, a conversion rate and selectivity of isobutane dehydrogenation preparation of isobutene are improved and a catalyst service life is prolonged.

The invention discloses a preprocessing method for glass fiber cloth. The preprocessing method is characterized by comprising the following process steps: (1) processing on the glass fiber cloth for 30-60 minutes at 400 to 550 DEG C; (2) soaking the glass fiber cloth for 1-5 minutes by utilizing 0.1M HCl solution; (3) processing the glass fiber cloth by utilizing 2.5-4M HCl+HNO3 mixed solution with the temperature of 92-100 DEG C for 120-240 minutes; (4) washing the glass fiber cloth until the surface pH is higher than 6; and (5) drying the glass fiber cloth for 5-30 minutes at 105 to 120 DEG C. The glass fiber cloth processed by utilizing the method disclosed by the invention has the silicon dioxide content higher than 93% (percentage by weight) and the characteristics of porous structure and high specific surface area, surface activity, temperature tolerance and acid-base resistance. The preprocessing method has the advantages of simple processing process, high production efficiency, low cost, stable product quality and the like and is suitable for large-scale production of photocatalytic carrier materials.

The invention discloses a germanium plane mirror chemical polishing method by using an electric field effect to improve acidity and basicity of a processing area. The germanium plane mirror chemical polishing method comprises the following steps of manufacturing a high dielectric constant vacuum sucker and a high dielectric constant polishing disc; coating high-temperature silver pastes on the nonworking end surfaces of the polishing disc and a base disc, connecting electrodes, and carrying out insulating treatment; and vacuumizing a germanium plane mirror on the porous ceramic base disc, andpolishing with a chemical polishing solution. The polishing principle of the method is that the high dielectric constant ceramic polishing disc is used, after the polishing disc and the vacuum adsorption ceramic base disc are connected with electrodes, a strong electric field is generated in a polishing area, and hydrogen ions or hydrogen oxygen ions move to the workpiece surface, so that the surface acidity and alkalinity of a workpiece are improved, the corrosiveness of the polishing solution to the workpiece surface is improved, and under the shear action of hydraulic pressure fluid, the surface of the workpiece is subjected to chemical non-contact polishing. According to the germanium plane mirror chemical polishing method by using the electric field effect to improve acidity and basicity of the processing area, the pH value of the workpiece surface can be controlled by the electric field, and through chemical non-contact polishing, the quality of the workpiece surface is improved, and the surface wear is avoided.

The invention discloses a drug-loaded structure of a titanium metal surface pH controlled-release drug and a preparation method of the drug-loaded structure. The structure comprises a titanium dioxidenanotube grown on the surface of titanium metal and a composite coating encapsulated on the surface of the titanium dioxide nanotube and containing folic acid and zinc oxide quantum dots; the preparation method comprises the following steps: after treating the titanium metal, allowing titanium dioxide nanotube to grow on the surface of the titanium metal by anodic oxidation, then loading a drug into the tube, and encapsulating the titanium dioxide nanotube with the prepared composite containing the folic acid and the zinc oxide quantum dots. According to the invention, the folic acid and a zinc oxide quantum dot coating in the drug-loading structure disclosed by the invention can control drug release in response to the pH, the slow release of zinc oxide in an acidic environment enhances an antibacterial cycle, the addition of the folic acid can promote cell proliferation and differentiation and facilitate the healing of a bacterial infection area, and both the folic acid and zinc oxide can be degraded in a human body, therefore, the drug-loading structure is harmless to a human body. The preparation method disclosed by the invention is simple, easy to operate and less in resourceconsumption, and has no influence on the environment.

This invention involves one kind of reorganization craft which can spin the purified cotton fabric feel crisply to slide, soft has the elasticity and has the natural style, its characteristic lies in after reorganizes in the craft to use the highly concentrated alkali silk to increase the fabric's gloss,then increases the laundering working procedure to the fabric surface pH value near neutrality, prevented the fabric body bone stiff and increases the soft slippery feeling; When stereotypia baiting; Reduces the soft medicinal preparation the amount, after drying carries on roll chasing the working procedure with under 80 DEG C +/-5 DEG C temperatures and 38 - 48 tons pressures, finally uses 40 ~ 60 meters/minute vehicle speeds to carry on shrinks in advance; Reorganizes after this craft, the purified cotton to spin the fabric feel crisply to slide, soft has the elasticity and has the natural style, the economic efficiency greatly increases.

Disclosed is a method of administration and device for the improved bioavailability of leukotriene receptor antagonists. This method and device involve an alkaline surface pH oral film dosage form designed to deliver leukotriene receptor antagonists, such as Montelukast, to the stomach in an amorphous precipitate suspended in aqueous medium. Also disclosed is a device and method for treating a disease, such as a neurodegenerative disease or condition associated with neuroinflammation induced by a leukotriene. The device is a film unit dosage form having an alkaline surface pH film layer and a safe and effective amount of Montelukast. The device is configured and formulated to predominantly achieve enteral delivery of the Montelukast. The method includes enterally delivering to a human or an animal in need of treatment, a safe and effective amount of Montelukast capable of crossing the blood-brain barrier.

In a photothermographic material having an image-forming layer and a protective layer on a support, (A) a nucleating agent having a particular structure is added to at least one of the layers formed on the image-forming layer side of the support and NH4+ content in all the layers formed on the image-forming layer side is controlled to be 0.06 mmol/m2 or less, or (B) a nucleating agent and an organic acid compound having a particular structure are added to at least one of the layers formed on the image-forming layer side so that film surface pH is substantially unchanged. This photothermographic material is characterized by low fog, high Dmax, little increase of fog during storage and little temperature and humidity dependency upon heat development.