194 results about "Absorption time" patented technology

An augmented, adaptive algorithm utilizing model predictive control (MPC) is developed for closed-loop glucose control in type 1 diabetes. A linear empirical input-output subject model is used with an MPC algorithm to regulate blood glucose online, where the subject model is recursively adapted, and the control signal for delivery of insulin and a counter-regulatory agent such as glucagon is based solely on online glucose concentration measurements. The MPC signal is synthesized by optimizing an augmented objective function that minimizes local insulin accumulation in the subcutaneous depot and control signal aggressiveness, while simultaneously regulating glucose concentration to a preset reference set point. The mathematical formulation governing the subcutaneous accumulation of administered insulin is derived based on nominal temporal values pertaining to the pharmacokinetics (time-course of activity) of insulin in human, in terms of its absorption rate, peak absorption time, and overall time of action. The MPC algorithm is also formulated to provide control action with an integral effect, and in essence minimizes overall drug consumption. When employed as a modulator in an automated integrated glucose-control system for type 1 diabetes, the control algorithm provides the system with self-learning capability that enables it to operate under unrestricted activity of the subject.

The invention relates to a novel liquid injection, infiltration and pre-charging process for lithium ion batteries. The process comprises the following steps: (S1) carrying out vacuum operation on a lithium ion battery before liquid injection, injecting a predetermined amount of electrolyte, and filling a proper amount of film forming additive gas into the battery after injection of electrolyte is finished; (S2) employing the manner of cyclical fluctuation negative pressure infiltration, wherein, fluctuation of negative pressure is expressed with a waveform function instead of a simple first grade linear function; (S3) carrying out formation under the conditions of changing negative pressure and changing temperature, wherein, the negative pressure and temperature both increase gradiently with time, a charging current is not constant and varies in a manner of small gradient increase. The invention enables a predetermined amount of electrolyte to be rapidly absorbed by anode and cathode materials and diaphragms of the battery, and absorption time is short while full absorption is realized, thereby improving the utilization rate of the electrolyte and shortening time for liquid injection; addition of a proper amount of film forming additive gas is beneficial for the formation of SEI membranes and enables inreversible capacity loss of the battery in initial charge to be reduced; the method of pre-charging brought forward in the invention enables uniform and stable SEI membranes to form on the surface of electrodes, thereby improving safety performance and electrochemical performance of lithium ion batteries; the process is simple and is easy to control, investment cost for equipment used in the process is low, and the process is easy to realize.

The present invention provides a liquid handling member that expands upon absorption of body liquid and contracts upon desorption of the body liquid. The liquid handling member of the present invention further exhibits an 80 percent absorption time of less than 2 seconds. The present invention further provides a device for handling body liquids which comprises the liquid handling member of the present invention.

The invention discloses a composite graphite material and a preparation method and application thereof. The method comprises the steps of (1) mixing activated natural graphite, an artificial graphite precursor and asphalt evenly and carrying out fusing and pelletizing in an inert atmosphere; and (2) mixing the fused and pelletized product with a graphitized catalyst evenly and carrying out high-temperature graphitization to obtain the composite graphite material. An electrode plate prepared from the composite graphite material disclosed by the invention has the advantages of high compaction density, a high liquid absorption rate of the electrode plate and good compatibility with an electrolyte, the compaction density is greater than 1.75g/cm<3> and the liquid absorption time is smaller than equal to 60s; furthermore, the further assembled battery is high in capacity and good in rate capability and cycle performance, the initial deintercalation specific capacity is greater than 360.5mAh/g and the initial efficiency is greater than 93.5%; the capacity retention ratio of the finished battery is greater than 85% after 500 charge-discharge cycles at a room temperature.

The invention relates to a method for gathering carbon dioxide, in particular to a method for gathering carbon dioxide by using high-stability alkaline ionic liquid, wherein carbon dioxide gas is absorbed by taking alkalescent quaternary phosphonium type ion liquid as an absorbent; the absorption pressure is 0.0001-0.2MPa; the absorption temperature is 10-70 DEG C; the absorption time is 0.1-2h; the absorbed carbon dioxide can be desorbed easily; the desorption temperature is within 80-150DEG C; and the desorption time is within 0.1-3h. In the invention, the high-stability alkaline ionic liquid is applied to the chemical gathering of carbon dioxide so that a high-capacity, low-energy consumption and recyclable gathering method of carbon dioxide is realized and a potential method is provided for the industrial gathering of carbon dioxide.

The invention discloses a method for removing humic acid pollutant in water by magnetic chitosan particle. Magnetic chitosan particle carries out absorption removal on humic acid pollutant in water under the condition that pH value is 3-8, absorption time is 1-24h, and temperature is 15-45 DEG C. The invention adopts magnetic chitosan particle to absorb and remove humic acid pollutant in water and shows strong absorption performance. Besides, the preparation of absorbing agent of the invention is simple, operation is convenient, cost is low, treatment effect is obvious, reproducibility is good, and rapid magnetic separation can be realized. Thus, the magnetic chitosan particle is used for removing humic acid pollutant in water, and favourable economic and environmental benefits can be obtained.

The invention relates to a process for adsorbing and recycling palladium in waste liquor containing palladium by ion exchange resin, belonging to the technical field of the separation method utilizing the ion exchange resin as sorbent to treat liquid. The step of the process is to dispose weakly acidic acrylic acid type cation exchange resin as absorption bed layers and utilize the absorption bed layers to absorb the waste liquor containing palladium, absorption time is 40-60 minutes, and operation temperature is 25-85DEG C. Utilizing hydrochloric acid to desorb the waste liquor containing palladium, desorption time is 60-80 minutes, and the operation temperature is 25-85DEG C. Evaporating, concentrating and crystallizing the desorption liquor containing palladium after desorbing, and at last, recycled palladium compound PdCl2 is obtained. The process also can employ repeated cycle to absorb and desorb 2-8 times. The recovery rate of palladium can reach above 72% by employing the process of the invention. Recovery cost is low. The required equipment and technique is simple, and the operation is easy. Resin is easy to regenerate, and the resin after desorption can be used in repeated cycle.

The invention discloses a method used for preparing propylene oxide. The method is characterized in that propylene, oxygen, hydrogen, a solvent and a catalyst are mixed for contact reaction at the temperature of 0 to 8 DEG C and the pressure of 0.1 to 3.0 MPa; the molar ratio between the propylene, the oxygen and the hydrogen is 1:(0.1 to 10):(0.1 to 10) and the mass ratio between the propylene and the catalyst is (0.1 to 50):1 and the mass ratio between the solvent and the catalyst is (10 to 1000):1; the catalyst appears as a palladium-loaded hollow titanium-silicate molecular sieve with MFI structure, and the radial length of the grain hollow cavity on the molecular sieve is between 5 and 300 nanometers; and benzene absorption is measured to be at least 70 milligram/gram under the conditions that the temperature is 25 DEG C, the P/P0 is equal to 0.10 and the absorption time is one hour; and a hysteresis loop exists between an absorption isotherm for cryogenic nitrogen absorption and a desorption isotherm. The method has high propylene conversion rate and high propylene oxide selectivity; especially the effective availability of hydrogen is higher and the stability of activity is better.

[Problem] To provide, at low cost, a disposable diaper that presents no difficulties in disposable diaper manufacture in humid climates, and that has a minimal amount of flowback, and rapid absorption time.

[ Solution] Provided is a particulate water-absorbing agent having as the principal component a poly (meth)acrylic acid (salt)-based water absorbing resin, wherein the water-absorbing agent has a particle size distribution of a weight average particle diameter of 300 to 500 μm, a blocking ratio after moisture absorption when left for one hour at 25° C. and 90% relative humidity of 20% or less, a surface tension of 60 mN/m or more, and a gel capillary absorption (GCA) of 28.0 g/g or more.

The invention discloses a novel composite core material for paper diapers and a preparation method of the novel composite core material. The novel composite core material is prepared from a fluffy non-woven fabric, a polymer absorbent material and dust-free paper, wherein wood pulp fiber is embedded into the bottom layer of the fluffy non-woven fabric. The novel composite core material has the advantages that the phenomenon that agglomerating and lumping are generated in the using process is effectively avoided; meanwhile, the fault phenomenon generated after longitudinal and transverse stretching is reduced, and the skin friendliness and the comfort degree are improved; after urine seeps downwards to arrive at the embedded wood pulp fiber, the urine diffuses around, therefore, the absorption speed of the urine is increased, the liquid absorption time of the polymer absorbent material is prolonged, and the reverse seepage amount of the urine is decreased.

The present invention is directed to absorbent composites comprising superabsorbent materials. The superabsorbent material has: an Absorption Time of about 5+10 a² minutes or greater, where a is the mean particle size of the superabsorbent material in millimeters; a capacity of about 15 g/g or greater; a Drop Penetration Value of about 2 seconds or less; and, a ½ Float Saturation of 50% or less. The present invention is further directed to fiber-containing fabrics and webs comprising superabsorbent materials and their applicability in disposable personal care products.

The invention discloses a novel sensor, and specifically discloses a molecularly-imprinted photonic crystal (MIPC) which is used for detecting organophosphorus toxicants timely and quickly. The MIPC employs methylphosphonic acid and ethylphosphonic acid as imprinting templates. An intensity of a reflectance spectrum of the corresponding imprinted photonic crystal decreases significantly with the increase of the concentration of a target compound or with the absorption time. The MIPC also shows some practical application values, and shows effects of low detection limit and high sensitivity in detections for the organophosphorus toxicants such as sarin, soman, VX and R-VX prototypes.

The invention relates to a glycerol levulose injection liquid and a preparation method thereof, belonging to the technical field of medicine preparation. The invention provides the clinic with a composite dehydrating and depressurizing preparation which takes effective quickly in terms of dehydration and depressurization, achieves long effect maintaining, few side effects, can provide energy support and is stable in terms of medicinal liquid. The prescription of the glycerol levulose injection liquid provided by the invention is composed of glycerol, fructose, mannitol, sorbitol, glucose and sodium chloride, injection water. The preparation process is as the following: the mannitol, sorbitol, fructose and glucose are heated and dissolved with the addition of a certain amount of water, undergoes active carbon absorption and decarbonization and is then added with glycerol and a certain amount of injection water; the PH value of the medicinal liquid is adjusted after the treatment of active carbon absorption and is separately placed after a content qualification; the glycerol levulose injection liquid is obtained after sterilization of the medicinal liquid. The key of the preparation method lies in the technical parameters such as whole-process temperature control, material addition sequence, time for heating and standing static, the amount of the active carbon, active carbon absorption time, PH value of the medicinal liquid, etc.

The invention provides a medical dressing with a tissue inducing function for fading scars and a preparation method of the medical dressing. The medical dressing with the tissue inducing function forfading the scars contains a medical polyurethane film with porosity and thickness, a liquid absorbing layer and a back lining layer; the liquid absorbing layer and the back lining layer are sequentially laminated above the medical polyurethane film; medical polyurethane is a contact wound layer marking contact with the skin. According to the medical dressing provided by the invention, the medicalpolyurethane film with the tissue inducing function, certain porosity and the thickness is used as a cell migration stent layer for coating a wound; in the wound healing process, cells slowly migrateand grow by a film stent structure of the medical dressing disclosed by the invention; due to inconsistent degradation time of a degradable material, tissue absorption time is inconsistent, migrationand growth uniformity degree of the wound cells is inconsistent, and further a skin tissue-like structure is formed and generation of large scars is prevented.

The invention provides a scar-free regenerated medicinal dressing with a tissue induction function and a preparation method of the scar-free regenerated medicinal dressing. The scar-free regenerated medicinal dressing comprises absorbable medical membranes, a liquid absorption layer and a back lining layer, wherein the absorbable medical membranes have tissue induction functions and are differentin degradation time; the liquid absorption layer and the back lining layer are sequentially overlapped on the absorbable medical membrane; the absorbable medical membrane is a trauma contact layer incontact with skin. The absorbable medical membranes which have tissue induction functions and are different in degradation time are adopted as a cell crawling bracket layer for covering a wound, cellsslowly crawl and grow through a membrane bracket structure of the dressing in the wound healing process, because of different degradation times of degradable materials, tissue absorption times are different, wound cells have different crawling and growth uniformity degrees, then skin texture like structures are formed, and large-size scars are avoided.

The invention relates to the technical field of sewage treatment, in particular to a method for improving the dewatering performance of excess sludge. Firstly, the pH value is regulated by acid liquid; Fe<2+> and H2O2 are added; then, hydraulic cavitation treatment is used; further, bound water, absorbed water, interstitial water and free water in sludge are partially removed; the water content in the sludge is further reduced to a value about 50 percent from 98 percent or more; the solid content is reduced by about 20 percent; the capillary tube water absorption time of the sludge is reduced; the content of polysaccharide and protein in sludge treatment supernate is improved; the sludge dewatering performance and the dehydrated water quality are improved; the operation method is simple; the energy consumption is low; the cost is low.

The invention relates to the field of molecular sieves, and mainly provides a molecular sieve containing precious metals, a preparation method and applications thereof. The molecular sieve containing precious metals comprises precious metal elements, a silicon element, and an oxygen element. The pore volume of the molecular sieve is 0.3 cm3/g or more. The total specific surface area is 200 m2/g or more. The external surface area is 30 m2/g or more. The external surface area accounts for 7 to 55% of the total specific surface area. The benzene absorption amount is at least 65 mg for each gram of molecular sieve under following conditions: temperature: 25 DEG C, P/P0=0.10, and absorption time: 1 hour. Under N2 static absorption tests, the micro pore size distribution is in a range of 1.0 to 1.8 nm. The invention also provides an alkene direct oxidation method. The provided molecular sieve containing precious metals has a special physico-chemical structure, the benzene absorption amount is high, and the micro pore size distribution is in a range of 1.0 to 1.8 nm. The molecular sieve can achieve a good catalytic effect, when being applied to reactions that generate circular molecules and alkene molecules or reactions that circular molecules and alkene molecules participate in.

The invention relates to a method for catching carbon dioxide by adopting alcohol amine type ion liquid, which is used for catching carbon dioxide gas by using alcohol amine type ion liquid based on metallic cation chelate as absorbing agents. The absorption pressure is 0.0001 to 0.2MPa, the absorption temperature is 30 DEG C to 120 DEG C, the absorption time is 0.1 to 2 hours, the desorption temperature is between 80 DEG C and 150 DEG C, and the desorption time is between 0.1 hours and 3 hours. The method has the advantages that the ion liquid is easy to prepare, the stability is good, the absorption capacity is high, the desorption is easy, and the like. The method belongs to a carbon dioxide catching method with the industrial application potential.

The invention discloses an evaluation method for the physical and chemical action of a drilling fluid and a shale formation, belongs to the technical field of petroleum and gas drilling, and relates to the technical field of petroleum and gas drilling well wall stability and mining geology. The method mainly comprises the following steps that shale in a mine field is observed and described, and a shale core is prepared and screened; the interval transit time and the resistivity of the shale core at the different water absorption time points are tested; the hydration strength of the shale is evaluated according to the interval transit time of the shale core at the different water absorption time points; the hydration speed of the shale is evaluated according to the changing condition of the resistivity of the shale core at the different water absorption time points. According to the evaluation method, operation is convenient, results are accurate and reliable, and the hydration characters of the shale can be quantitatively evaluated to provide a basis for adjusting the density of drilling fluid slurry.

The invention provides a dexibuprofen medical composition that can improve dissolution and a preparation method thereof, relating to the method technology field that improves the dissolution rate of the dexibuprofen medical compositions which comprise amino acid, sodium carbonate and sodium bicarbonate, being added with proper amount of other pharmaceutic adjuvant to form a new dexibuprofen medical composition. The dexibuprofen medical composition added with solubilization composition can be dissolved quickly in vivo and in vitro to shorten the absorption time and to improve the bioavailability of the blood plasma, thus resisting disease more quickly and effectively.

The invention discloses a method for adsorptively removing sulfate ions in water by using a composite material with a laminated structure. An L-zinc aluminum glutamate hydrotalcite/zinc aluminum nitrate hydrotalcite composite material is prepared by using a co-precipitation method to adsorptively treat the sulfate ions in the water. An experiment shows that absorption of the sulfate ions in the water by using the material has the characteristics of short absorption time, high adsorption capacity, high applicability and recyclability. In addition, the composite material in the method has the advantages of low cost, no pollution and easy separation, and has wide development and application prospects.