347 results about "Desiccation" patented technology

This invention relates to chromosomal engineering via DNA repair process. The process of the invention comprises the steps of: 1) submitting at least one source of biological activity, e.g. Deinococcus radiodurans, to radiation, desiccation and/or chemical treatment liable to damage the DNA, so as to substantially shatter its chromosomes into short fragments; 2) annealing complementary single strand tails extended by the synthesis templated on partially overlapping DNA fragments of said shattered chromosomes; 4) converting the resulting long linear DNA intermediates into intact circular chromosomes, by means of a RecA dependent homologous recombination; whereas at least one foreign source of genetic material, e.g. DNA, can be introduced during steps 2 and/or 3; and 4) optionally separating and collecting the recombined chromosomes thus obtained.

A refrigerated unit is well suited for storing fruits and vegetables. A household-sized refrigerated unit includes a storage space for retaining fruits and vegetables. The temperature within the storage space is controllable within a range of approximately 40-65 degrees Fahrenheit. The humidity level within the storage space is regulated to prevent unnecessary desiccation of the fruit and vegetables, and to prevent excessive condensation. The unit is provided with a mechanism for regulating the level of ethylene gas within the storage space to either retard or accelerate ripening, as desired.

The invention discloses a circulating sludge biological fermentation tower which comprises a tower body, an openable tower cover, a storage tank and a plurality of rotatable fermentation devices, wherein the openable tower cover is arranged on the top of the tower body; the storage tank is arranged at the bottom of the tower body; the rotatable fermentation devices are arranged in the tower body in parallel; the fermentation devices divide an inner cavity of the tower body into a plurality of layers of fermentation bins along the axial direction; the lower part of each layer of fermentation device is provided with a ventilating oxygen supply pipeline communicated with a blower; the upper part of each layer of fermentation device is provided with an air outlet pipeline communicated with aninduced draft fan and a monitoring device; the monitoring device is controlled by a control room; and a mechanism for driving the fermentation devices and the tower cover to move, the blower and the induced draft fan are all controlled by the control room. The invention also discloses a circulating sludge biological processing system and a processing method. By the circulating sludge biological fermentation tower, the circulating sludge biological processing system and the processing method, industrial biological fermentation desiccation treatment can be continuously and stably carried out onsludge under the conditions of high efficiency and low energy consumption.

Living cellular material may be preserved by incubating the cellular material in a culture medium containing at least one sugar, particularly for at least three hours, and then subjecting the cellular material to a preservation protocol, such as freezing, vitrification, freeze-drying and desiccation.

The invention provides a naturally occurring strain of Lactobacillus crispatus with advantageous characteristics. The strain colonizes mucosal surfaces, particularly vaginal surfaces. The strain is also capable of rapid growth in a number of conditions and is highly viable after desiccation. Moreover, the strain is capable of preventing and reducing pathogenic infection of vaginal mucosa.

The invention relates to a treatment method of sludge generated by urban sewage treatment plant and industrial sludge and discloses a sludge treatment method based on hydrothermal carbonization. The sludge treatment method comprises four steps: sludge preheating treatment, hydrothermal carbonization, waste heat recovery and dehydration desiccation. By adopting the sludge treatment method, as the sludge is converted to hydrothermal carbon by adopting a hydrothermal carbonization technology, pathogenic microorganisms in the sludge are completely killed, most heavy metal pollutants in the sludge are dissolved out, and organic toxic substances in the sludge are effectively decomposed, so that the energy recovery utilization rate is high, and the sludge treatment method is clean, environment-friendly, rapid and effective and has high product additional values.

The invention discloses a mass concrete construction method of a super-thick foundation, comprising the following steps of: (1) binding the steel bars on a base plate of the foundation, and fixing cooling water pipes on a steel bar fixing frame, wherein the cooling water pipes are evenly distributed at the inside layers of the foundation; (2) blending the concrete; (3) pouring the concrete; (4) carrying out press polishing to the concrete on the surface of the foundation before the final setting of the concrete of the foundation; and (5) maintaining the foundation. The invention adopts the anti-cracking concrete so as to reduce the cement content and decrease the generation of the heat of hydration; the embedding of the cooling water pipes can shorten the emission time of the heat in the concrete and decrease the maintenance time of the concrete structure; the press polishing is carried out to the surface of the concrete structure to ensure that the desiccation fissures are prevented; and maintaining the concrete with preserved temperature and humidity can improve the quality of the concrete. The invention has the effects of at least improving the work efficiency by 4 times, greatly saving the cost, improving the work efficiency and paving the way for the advanced construction of the next process.

The invention discloses an auxiliary spouting method for improving the uniformity of microwave drying of granular fruits and vegetables, which belongs to the technical field of the processing of fruit and vegetable food. Pretreated fruits and vegetables are placed into a microwave spouting drying bed, the microwave power and the air intake heating temperature are preset, then the central air intake volume and the air intake angle of the spouting bed are adjusted to ensure that a dried material spouts in the spouting bed in different forms, the air intake pressure and the air intake angle are adjusted according to different drying stages of the material at the same time, and the microwave energy received by the material is more uniform than that of the prior fixation or fluidization mode; and the microwave adopts internal heating, so the moisture of the dried fruits and vegetables is effectively and quickly evaporated to achieve the aim of uniform drying. Through the auxiliary spouting method, the material is uniformly heated in a microwave field, the moisture is evaporated quickly, the drying time is greatly shortened, the prior color and luster, shape and nutrient substances of the dried fruits and vegetables can be furthest retained, and the dried fruits and vegetables have porous structures and good rehydration property, thereby obtaining a high-quality dehydrated fruit and vegetable product.

The invention discloses a method for preparing mulberry leaf tea. The method comprises the following processing steps that: 1, mulberry leaf picking; 2, air-drying and withering; 3, rotating; 4, desiccating at high temperature; 5, spreading for cooling; 6, secondary desiccation at high temperature; 7, rolling; 8, initial drying; 9, winnowing; 10, chopping; and 11, baking. The invention provides the method for preparing mulberry leaf tea without physical and chemical pollution of plant diseases and insect pests, mud, faecal pollution of birds and insects, pesticide pollution, air pollution and the like.

The invention mainly aims to provide a sludge desiccation system. A technical scheme is as below: a sludge desiccation system comprises a drying chamber communicating with a hot-air pipeline and an auxiliary heat source pipeline; the drying chamber comprises a wet sludge inlet, a dry sludge outlet, a moisture exhaust and a sludge conveyor belt inside the drying chamber; the hot-air pipeline is communicating with a solar heat collector, which is communicating with a blower fan through an air channel; and the auxiliary heat source pipeline is provided with a temperature control valve. The desiccation system not only utilizes solar energy and heat tail gas or steam discharged by a factory effectively to enhance desiccation efficiency and desiccation effect, but also enhances operating stability of the desiccation system.

The invention relates to a kind of hot-wind desiccation controlling system. It includes a sensor group(1), a water sensor of the material(2), a transducer(3), a impedance transducer(4), a controller(6),a converter(9),a blowdown device(10) and a superior computer(13). The output signal of the sensor group(1) and the water sensor of the material(2) connect with the input end of the controller(6) individually through the transducer(3) and the impedance transducer(4). The input and the output interface of the controller (6) and the output and the input interface of the superior computer (13) realize the two-direction communication through the communication interface. The output interface of the controller (6) connects with the blowdown device (10) of the hot-wind desiccation chamber through the converter (9). The input quantity and the change rule of the system is not predefined but determined real time by the superior computer according to the online measuring value. It can save the energy loss, increase the desiccation efficiency and security and improve the hot-wind desiccation quality farthest as the character of the material in desiccation.

The invention provides treatment method and device for riverway and lake heavy metal pollution bottom sludge. The treatment method comprises the following steps: removing heavy metal pollution bottom sludge from a riverway or a lake through cutter-suction environmental dredging, transporting the heavy metal pollution bottom sludge to the shoreside, directly sieving and dehydrating the heavy metalpollution bottom sludge, and dividing the removed heavy metal pollution bottom sludge into gravels, coarse sands, fine sands, clay particles and dehydration solution; adding a heavy metal adsorption agent in the dehydration solution, removing heavy metals through settlement, discharging supernate into water, and sending precipitate after dehydration to a dangerous solid waste landfill to be treated; and respectively carrying out subsequent treatment on solid with different particle sizes. The treatment device comprises a sieving cylinder body and a sludge dehydrator, wherein the bottom surface of the sieving cylinder body is communicated with a feeding hole of the sludge dehydrator, and a gravel sieve net, a coarse sand sieve net and a fine sand sieve net are sequentially arranged in the sieving cylinder body from top to bottom. With the adoption of the treatment method and device, the riverway and lake heavy metal pollution bottom sludge collected by cutter-suction dredging is directly classified and treated without desiccation, the treatment period is short, and the cost is low.

Disclosed herein is a novel bacteriophage which has specific bactericidal activity against one or more Salmonella bacteria selected from the group consisting of Salmonella Enteritidis, Salmonella Typhimurium, Salmonella Gallinarum, and Salmonella Pullorum without affecting beneficial bacteria, in addition to showing excellent tolerance to acid, heat and desiccation. The novel bacteriophage can be widely used as an active ingredient for therapeutic agents, animal feeds or drinking water, cleaners and sanitizers for preventing and treating the infectious diseases caused by Salmonella Enteritidis, Salmonella Typhimurium, Salmonella Gallinarum or Salmonella Pullorum including salmonellosis, Salmonella food poisoning, Fowl Typhoid, and Pullorum disease or for controlling the salmonella bacteria.

The present invention provides a system and method for removing contaminating moisture from a deposition chamber prior to use. Dry air, preferably hot dry air, is blown into the deposition chamber where it absorbs and removes moisture. This is done by connecting a desiccation system including a blower and a dryer to the deposition chamber. The deposition chamber is also provided with a vacuum source; this may be connected to the deposition chamber using the same line as that used for the desiccation source, or may be connected through a separate line. The dry air may re-circulate through the chamber during this flushing method, or the dry air may flow through the deposition chamber continuously. A heat exchanger may also be provided to efficiently reuse hot air used to recharge the desiccation system. The desiccation system and method are particularly suited for decontaminating a magnetron sputtering deposition chamber.

The invention refers to a method of preparing wood fiber for road. The method is as follows: use scrap newspapers as raw materials, and after cleaning &purifying, soaking and pulping, compound it and ultra-small powder of denatured kaolin under normal temperature and pressure, the kaolin's magnitude is 11%-23% (wt%) of fiber's; then after dehydration, desiccation and scatterning, the fiber production is made into scattered-shape wood fiber; then the wood fiber is mixed with pitch solution under normal temperature and pressure and stirring condition, then control the temperature to be 70-100 degree C to make solvent oil volatilize and then cool it for circular utilization; then extrude the fiber to shape and cool it to obtain the grain-shape road wood fiber.

The invention relates to a treatment technology for combination of mechanical deep dehydration of sludge, biological drying and resource utilization, which consists of three parts of mechanical deep dehydration of the sludge, biological drying and resource utilization. The treatment technology comprises the following steps: firstly, dirty and wet sludge is subjected to dehydration by the mechanical method through a diaphragm high-pressure plate and frame filter press, and the water content is reduced to less than 65 percent; secondly, the sludge which is subjected to mechanical dehydration is dried by using biological energy, and the water content of the sludge is reduced to between 30 and 35 percent again; and finally, dried sludge after dehydration is used for producing fertilizer and building materials, wherein the production of the fertilizer adopts the compound fertilizer producing technique, that is, the dried sludge is subjected to nutrition adaptation, granulation, drying and bagging; and the production of the building materials adopts the sintering technique, that is, the dried sludge is subjected to mixture, green brick briquetting, drying and sintering. High-temperature flue gas generated during brick baking is utilized by a waste heat boiler, and tail gas is treated and exhausted after reaching the standards. The three working procedures of the technology are organically combined and conditional mutually, and the technology realizes reduction, innoxiousness and stability of the sludge, and simultaneously creates economic benefit.

A composition for treating contact lens is a nursing solution containing sodium hyaluronate, and can be used for cleaning, sterilizing and storing contact lens, and wetting eye and lens, preventing eye's desiccation and irritation.

This invention discloses a semi-conducting and xerantic-type clothes dryer, which is characterized in that the air outlet of heating chamber connected with air inlet pipe, its air inlet connected with air outlet pipe, the air outlet of xerantic chamber connected with air outlet pipe, its air inlet connected with air channel, the orifice of air outlet pipe directly connected with air channel. According to the invention, dividing circulated air from drying barrel into two parts, one part is to heater for heating, and the other is delivered to heat absorber for cooling and is delivered to heater for heating again after delivered to the xerantic chamber for dehumidification. Two parts air are marshaled in the heater and are delivered to drying barrel for circulating use after heated. The dryer can improve heating efficiency and desiccation effect, and shorten the drying time.

The invention discloses a fluid-bed drying system. The system comprises a main drying machine, a feeding device, a 1 heat exchanger, a 2 heat exchanger, a 3 heat exchanger, a 4 heat exchanger, a 1 scum skimmer, a 2 scum skimmer, a 1 cyclone separator, a 2 cyclone separator, a 1 bag dust collector, a 2 bag dust collector, a 1 water film deduster, a 2 water film deduster, a 1 gas liquid separator, a 2 gas liquid separator, a vibrating screen and a fluidized bed cooling device. Three air flows with different temperatures are input into different positions of a bed body of the main drying machine, air outlet directions of air ports of a pore plate of the main drying machine are different, a middle bed is equipped with a variable cross-section air passage, thus increasing drying and staying time of materials in the main drying machine, the materials output from the main drying machine are cooled by desiccation and cooling air in the fluidized bed cooling device to further reduce moisture of finished product and discharge temperature of the finished product, thus realizing good drying and cooling effect.

The invention discloses perennial sowthistle health-care tea, which is prepared by using the Sonchus L. plant perennial sowthistle as the raw material and carrying out steps of rinsing, high temperature desiccation, airing, slice processing, tea-leaf curing and rolling processing, second tea-leaf curing, rolling, drying and packing. The perennial sowthistle health-care tea can be directly drunk and also can be drunk with other teas such as black tea, scented tea, green tea and oolong tea. The product provided by the invention is convenient to drink, has a good taste and strong incense, is an ideal tea substitute, has a natural Perennial sowthistle medical value, and has an active effect of effectively reducing the harm of hazardous substances in tobaccos to smokers and passive smokers.