2585results about How to "Reduce evaporation" patented technology

The invention provides exemplary systems, methods, and apparatus for distinctly allocating liquids containing chemical compositions or compounds to known locations in an organized manner so that assays may be performed on the compositions, or so that the chemical compositions may be combined with other distinct chemical compositions or reagents prior to evaluation. In an exemplary embodiment, the invention includes a multiwell plate for handling articles such as resin beads suspended in a liquid. The plate comprises a plurality of wells. The wells in turn have a capillary hole that is adapted to (i) retain articles in the well, and (ii) retain liquid in the well while the liquid is not subjected to extrinsic forces, such as centrifugation or vacuum.

Methods and devices for reducing evaporation of sample materials from the wells of multiwell plates are disclosed which find particular utility when the plates are placed in a stacked configuration. An example of the methods includes providing at least a first multiwell plate which is configured to be placed in a stacked configuration with at least one second multiwell plate, the at least first multiwell plate having a plurality of wells for receiving sample material therein and opposing side walls which extend around the plate and which define a ridge spaced inwardly of the side walls and extending around the plate between the side walls and the plurality of wells, the method including at least partially filling the ridge with a liquid such as water or buffer solution. The ridge can include one or more ribs which extend upwardly from a lower surface of the ridge to help reduce sloshing of the liquid contained within the ridge and to add structural strength and rigidity to the multiwell plate. The second multiwell plate can be provided with a downwardly extending flange which extends around a lower surface of the plate and which is configured to be removably received by the ridge of the at least first multiwell plate such that when the second multiwell plate is removably positioned on top of the at least first multiwell plate in a stacked configuration, the flange extends at least partially into the ridge and contacts the liquid to thereby create a substantial evaporation barrier to minimize evaporation of sample liquids in the wells of the at least first multiwell plate.

An apparatus and a method are disclosed for providing point of care testing for osmolarity of a bodily fluid. An apparatus is disclosed as having a fluid pathway passing through it for receiving and testing a sample fluid. The invention permits osmolarity testing of a sample fluid wherein the sample fluid has a volume of less than approximately 30 nL, and implements a method and device to measure fluid osmolarity in a clinical setting quickly and accurately, while also reducing evaporation of the fluid.

Antimicrobial compositions having a rapid antiviral and antibacterial effectiveness, and a persistent antiviral effectiveness, are disclosed. The antimicrobial compositions contain (a) a disinfecting alcohol, (b) a blend containing a C12 to C22 alcohol and an ethoxylated C12 to C22 alcohol, such as a cetearyl alcohol and cetereth-20 blend, a cetearyl alcohol, steareth-20, and steareth-10 blend, or a mixture thereof, (c) an optional organic acid, and (c) water.

An antibacterial fluid may be applied to a tubular medical cannula for access to a patient. The fluid comprises a typically metabolizable antibacterial formulation having a viscosity of at least about 5,000 cp. The cannula may then be inserted into the patient with an increased lubricity for a reduction of pain, while at the same time, unlike silicones, preferred materials do not readily accumulate in the patient. The tubular medical cannula may be a rigid, hollow needle, sharp or blunt, a spike, or a flexible catheter. Also, the viscous antibacterial fluid may be used to lock a catheter or other cannula while implanted in the patient, for storage purposes. The formulation is typically an alcohol plus a viscosity increasing agent.

An antibacterial fluid may be applied to a tubular medical cannula for access to a patient. The fluid comprises a typically metabolizable antibacterial formulation having a viscosity preferably greater than 150,000 cp. The cannula may then be inserted into the patient with an increased lubricity for a reduction of pain, while at the same time, unlike silicones, preferred materials do not readily accumulate in the patient. The fluid may be placed on the skin. The tubular medical cannula may be a rigid, hollow needle, sharp or blunt, a spike, or a flexible catheter. Also, the viscous antibacterial fluid may be used to lock a catheter or other cannula while implanted in the patient, for storage purposes. The formulation is typically an alcohol plus a viscosity increasing agent and optionally a surfactant, a clotting agent, and / or EDTA.

Construction for greening housetop comprises base layer, moisture retention device, and planting layer arranged on the base layer, wherein the moisture retention device is arranged between the base layer and planting layer and contacts with the planting layer partly. The base layer, moisture retention device and planting layer together create a circumstance for steady and long term plant growth like ground. The construction can guarantee normal growth of plants in natural condition especially in bad conditions, and can make full use of nuisanceless natural resources such as rainwater.

A method of treating meibomian gland dysfunction. Heat is applied to the inside of the eyelid to provide conductive heat transfer to the meibomian glands. The application of heat assists in the expression of obstructions or occlusions in the meibomian glands to restore sufficient sebum flow to the lipid layer to treat dry eye. Temperatures at the meibomian glands reach desired levels more quickly and efficiently when heating the inside of the eyelid. Reaching such higher temperature levels may be instrumental in removing obstructions in the meibomian glands. Less time may also be required to reach desired temperature levels when applying heat to the inside of the eyelid. A force may also be applied to the inside of the patient's eyelid to improve conductive heat transfer and reduce blood flow in the eyelid that causes convective heat loss. Thus, the application of force can further increase the temperature level and / or reduce the time to reach desired temperature levels for removing obstructions.

Compositions and personal care articles are described comprising a complexed perfume and a coating material which acts to retain the perfume in the complexed state and to keep out other competing materials.

The invention discloses a method for realizing zero emission of dyeing wastewater with high salinity in printing and dyeing enterprises. The method comprises the following steps that: the wastewater enters a regulating reservoir first for homogenizing, and then enters a reaction tank, ferrous sulfate is added into the reaction tank to regulate the pH value and perform a coagulation reaction, effluent enters a sedimentation basin for precipitating after the reaction, supernate of the sedimentation basin is treated by an electrochemical reactor, enters a secondary sedimentation basin so as to remove scummings and dregs and enters an aeration tank for aerating, and the supernate is filtered by a manganese sand filter for deferrization after the aerating; the filtered effluent is treated by using an ultrafiltration membrane, concentrated water of the ultrafiltration membrane returns to the regulating reservoir, and fresh water enters a nanofilter membrane for treating; the fresh water outputted by the nanofilter membrane enters a reverse osmosis membrane, the outputted concentrated water returns to the regulating reservoir or is evaporated directly; and concentrated water of the reverse osmosis membrane enters an electrodialyzer, electrodialytic fresh water is refluxed to be used as inflow of the reverse osmosis membrane, and electrodialytic concentrated water enters an evaporator for evaporating. Vapor generated by evaporating can be used for printing and dyeing production, residues generated by the evaporating are used as solid wastes, and water pollutants are not discharged in the whole process.

A method for processing a substrate is provided which includes generating a fluid meniscus to process the substrate and applying the fluid meniscus to a surface of the substrate. The method further includes reducing evaporation of fluids from a surface in the substrate processing environment.

The invention provides a treatment system and treatment method for biochemical effluent of industrial wastewater. The treatment system comprises a flocculation sedimentation unit, a filtration unit, an advanced oxidation unit, an ultrafiltration unit, a reverse osmosis unit, a nanofiltration unit, an electrodialysis unit and an evaporation unit which are sequentially connected; and the water production outlet of the ultrafiltration unit is connected with the water inlet tank of the reverse osmosis unit, and the concentrated-water outlet of the reverse osmosis unit is connected with the water inlet of the nanofiltration unit. According to the invention, the treatment system and the treatment method utilize the coupling and synergistic effects of a physical-chemical method and a membrane technology to overcome the limitation of using a single technology, and the advanced treatment and desalination reuse of the industrial wastewater are realized; and the treatment system and the treatmentmethod have the advantages of strong adaptability to raw water, a high recovery rate of fresh water, a high concentration multiple of concentrated water, low energy consumption of evaporation and crystallization and the like, greatly improve the reuse rate of the industrial wastewater, reduce the amount of wastewater discharging, can be applied to the deep treatment and desalination reuse of various effluent wastewater, and promote the promotion and application of the technology in related industries.

A group-III nitride crystal growth method, comprising the steps of: a) preparing a mixed molten liquid of an alkaline metal and a material at least comprising a group-III metal; b) growing a group-III nitride crystal of the group-III metal and nitrogen from the mixed molten liquid and a material at least comprising nitrogen; and c) setting a predetermined crystal growth condition according to a zone defined by a pressure and a temperature in said step b).

An apparatus for treating meibomian gland dysfunction. A lid warmer may be attached onto a patient's eye to apply heat on the inside of the eyelid to provide conductive heat transfer to the meibomian glands. The application of heat assists in the expression of obstructions or occlusions in the meibomian glands to restore sufficient sebum flow to the lipid layer to treat dry eye. Temperatures at the meibomian glands reach desired levels more quickly and efficiently when heating the inside of the eyelid. Reaching such higher temperature levels may be instrumental in removing obstructions in the meibomian glands. Less time may also be required to reach desired temperature levels when applying heat to the inside of the eyelid. An eyecup may also be employed to generate a force on the outside of the patient's eyelid to improve conductive heat transfer and reduce blood flow in the eyelid that causes convective heat loss. Thus, the application of force can further increase the temperature level and / or reduce the time to reach desired temperature levels for removing obstructions.

A closure for a tubular access port in a medical fluid flow line or other container comprises a removable cap for enclosing and sealing the tubular access port. The cap has a closed end wall. The end wall carries an extending poker to facilitate the pushing of an antiseptic-carrying material into a lumen of the access port. The poker has an outer diameter that is less than the inner diameter of the access port. A method of using the poker is also described.

A bag culture system for large-scale production of solanaceous vegetables comprises a plurality of culture troughs, a plurality of culture bags, a water inlet pipe, a reservoir, a water pump, a fertilizing device, a filter, a drip irrigation main pipe, a plurality of drip irrigation branch pipes and a plurality of emitters. The culture troughs are formed in parallel on the floor of a solar greenhouse by recessing. Two rows of upright culture bags are disposed in each culture trough. The reservoir is located inside the greenhouse. The water pump is disposed in the reservoir, and an outlet of the water pump is connected with a liquid inlet end of the drip irrigation main pipe. An outlet end of the fertilizing device is connected with a liquid inlet end of the drip irrigation main pipe. The filter is disposed on the drip irrigation main pipe. The rear of the drip irrigation main pipe is arranged above one ends of the culture troughs. One drip irrigation branch pipe is disposed above each row of culture bags, and one ends of the drip irrigation branch pipes are connected with the drip irrigation main pipe simultaneously. Each drip irrigation branch pipe is provided with the emitters, while each emitter is above a round hole of each culture bag. The bag culture system has the advantages that production environment can be improved, water and fertilizer can be economized, utilization rate of fertilizer is increased, spread of soil-borne diseases is avoided, and the like.

The invention provides a distributed underground reservoir suitable for storing underground water in open mining areas. The distributed underground reservoir comprises a plurality of reservoir bodies located underground, recharge water pipelines and connecting pipelines. Each reservoir body comprises a reservoir bottom, a dam and reservoir fillers, and the reservoir fillers fully fill a semi-closed area enclosed by each reservoir bottom and each dam. The lower ends of the recharge water pipelines are positioned in the reservoir fillers, and the upper ends of the recharge water pipelines extend above the ground. Besides, the reservoir bodies are communicated with one another by the connecting pipelines penetrating through the dams. The invention further provides a construction method of the distributed underground reservoir. The distributed underground reservoir can contain underground water outflowing during mining, occupancy of the ground and evaporation of moisture are reduced, stored superfluous water among the reservoir bodies can be automatically distributed, and storage of water resources in other places during stripping of an open pit mine is achieved by the aid of the recharge water pipelines so that water resources are protected.

A culture dish (1) comprising a basic structure (2) with a number of macro wells (4) for culturing oocytes and embryos, the culture dish further comprising a lid (3) with a movable part (8), the movable part (8) having an opening (11) adapted to the size of the macro wells (4), the movable part (8) being movable between a first position where all macro wells are closed by the lid (3) and further positions where for each further position (11) the opening (11) is aligned with one of the macro wells (4) to allow access to this macro well (4) through the opening (11) in the lid (3).

Methods and apparatus for assaying biological materials employ multi-well substrates as described herein. The substrates include a plurality of wells, typically each of several nanoliters volume or smaller having consistent dimensions and formed in a rigid substrate such as a glass disk. Each well may be provided with a circumferential lip to minimize crosstalk between wells and / or facilitate optical location of the individual wells during interrogation. Samples are provided to the individual wells and assayed by an optical technique employing fluorescence, polarization, reflectance, or the like. A scanning laser system may be employed for this purpose. The substrate may rotate during the scan to allow consistent interrogation of the wells without stopping and starting the rotation. Multiple rotations may also be employed repeatedly interrogate the samples for use in a kinetic study, for example.

The invention discloses a two-layer coated water-retaining sustained-release fertilizer and a preparation method thereof. The two-layer coated water-retaining sustained-release fertilizer comprises fertilizer particles and two-layer coatings coating the surfaces of the fertilizer particles; an inner-membrane controlled-release layer is made of carrageenan and soluble potassium salt or soluble ammonium salt; and an outer-membrane water-retaining layer is made of high water absorption resin. The two-layer coated water-retaining sustained-release fertilizer provides various nutrient elements required by plants, and improves the sustained release property of the nutrient elements; meanwhile, through the combination of the fertilizer and the water absorption resin, the two-layer coated water-retaining sustained-release fertilizer has multiple functions of absorbing and retaining water, performing sustained release, conditioning soil and the like.

Microfluidic devices for cell culturing and methods for using the same are disclosed. One device includes a substrate and membrane. The substrate includes a reservoir in fluid communication with a passage. A bio-compatible fluid may be added to the reservoir and passage. The reservoir is configured to receive and retain at least a portion of a cell mass. The membrane acts as a barrier to evaporation of the bio-compatible fluid from the passage. A cover fluid may be added to cover the bio-compatible fluid to prevent evaporation of the bio-compatible fluid.

The invention provides a composite amino acid ecological nutritious agent, which comprises sea weed fermentation liquor, fermentation liquor of animal leftover bits and pieces, trace elements, and biological bacterium. The functions of the agent include stimulating growth, suppressing pathogenic agent and reinforcing immunization.

A method, device and system for detecting the presence of microorganisms in an air sample taken from either a gaseous or liquid environment are described. The method including the steps of a) capturing with a filter microorganisms from the air sample; b) recovering from the filter with a liquid at least some microorganisms captured by the filter in step a); and c) detecting the presence of the at least some microorganisms in the liquid. The device and system include a chamber through which the air sample to be examined is circulated; a filter for capturing microorganisms susceptible to be present in the air sample; a liquid cooperating with the filter for recovering captured microorganisms therefrom; and a detector for detecting the presence of microorganisms in the liquid. The method, device and system are particularly useful for the continuous and on-site control, monitoring and detection of microorganisms, such as bacteria, parasites, fungi, viruses and the like, which may be present in an air sample, taken from an air duct of a ventilation system.

The invention relates to a method for extracting precious metal from a disabled auto-exhaust catalyst, which comprises the following steps: 1. lixiviating precious metal from the disabled auto-exhaust catalyst by a hydrometallurgy process and obtaining precious metal concentrates after permuting lixivium; 2. lixiviating slag, collecting precious metal of the slag by a pyrometallurgy process to obtain a precious metal phase and selectively lixiviating base metal in the precious metal phase to obtain precious metal concentrates; and 3 combining the precious metal concentrates obtained in the first two steps and refining the precious metal concentrates to produce platinum, palladium and rhodium products. The invention compensates the deficiency that the percent recovery of the precious metal is low by simply treating the disabled auto-exhaust catalyst with the hydrometallurgy process and has the advantages that the contents of platinum, palladium and rhodium in the waste slag are smaller than 1g / t and the product purity reaches 99.95 percent.

Disclosed is a process for fabricating luminescent porous material, the process comprising pre-treating a substrate (e.g. crystalline silicon) with laser radiation (e.g from a Nd:YAG laser) in a predetermined pattern followed by exposing the irradiated substrate to a chemical stain etchant (e.g. HF:HNO3:H2O) to produce a luminescent nanoporous material. Luminescent porous material having a luminescence maximum greater than about 2100 meV may be produced by this method. Such nanoporous materials are useful in optoelectronic and other semiconductor devices.