CONCRETE 3D PRINTER Introduction , Working , Types , Applications , Advantages & Disadvantages

CONCRETE 3D PRINTINGThree dimensional printing (3DP) is a manufacturing process that builds layers to create a three- dimensional solid object from a digital model. It allows for mass customization and complex shapes that cannot be produced in other ways, eliminates the need for tool production and its associated labour, and reduces waste stream. Because of these advantages, 3DP has been increasingly used in different areas.

CONCRETE 3D PRINTER  Introduction , Working , Types , Applications , Advantages & Disadvantages 1

including medical, automotive, aerospace, construction, etc. 3D printing for civil structures can significantly reduce the construction time and cost.However, unlike applications of 3DP in other areas, civil structures are typically large scale, with length or height spanning hundreds of meters.

They are subjected to complex loadings, including gravity, wind, seismic, etc. Therefore, it is challenging to develop suitable printing tools and materials. As a result, 3DP of civil structures is still at a primitive stage.

1. Contour crafting 2. Concrete printing 3.

CON print 3DThis Three are Extrusion based techniquesThe extrusion-based technique is analogous to the fussed deposition modelling (FDM) method which extrudes cementitious material from a nozzle mounted on a gantry, crane or a 6-axes robotic arm to print a structure layer by layer.This technique has been aimed at on-site construction applications such as large-scale building components with complex geometries, and has a great potential to make a significant and positive contribution to the construction industry. A schematic of the extrusion based technique is illustrated in Figure1.

CONCRETE 3D PRINTER  Introduction , Working , Types , Applications , Advantages & Disadvantages 2

Contour crafting (CC) technology has been developed at the university of Southern California, USA. This technology uses the extrusion-based technique to extrude two layers of cementitious mixture to build a vertical concrete formwork. Custom-made reinforcement ties are manually inserted between layers (at every 30 cm horizontal and 13 cm vertically) while the CC machine is constantly extruding the layers.

Trowel-like Gins are attached to the print head to create smooth extruded surfaces. Once the extruded formwork is completed, concrete is then manually poured to a height of 13 cm and a second batch is poured on top of the first batch after one hour. A one hour delay batch is to control the lateral pressure of the concrete by allowing it to partially cure and harden.

The chief advantagesThe superior surface finish and the greatly enhanced of fabrication. Other key advantage of CC is possibility of integration with other robotics methods for installing internal components such as pipes, electrical conductors, and reinforcement modules to enhance mechanical property. The CC technology currently produces vertical elements largely in compression.

When doorway or window is required a lintel is placed to bridge the gap and the wall can be placed above. Therefore, it avoids the cantilever problem.Drawbacks for the CC technology :1.

This technology is limited to vertical extrusion, hence yielding 2. 5 D topologies (vertical extension of a planar shape),2. The initial formwork and trowel system can be rather complex to implement for production, depending on the size and shape of the object being printed.

3.The interrupted sequential casting of concrete within the formwork due to hydrostatic pressure and weak mechanical properties of the extruded concrete may result in weakened interfacial zones between the layers. 2.

Concrete PrintingConcrete Printing technology has been developed by a team at Loughborough University in the United Kingdom. This technology also uses the extrusion-based technique and to some extent is similar to the cc technology.However, the concrete Printing technology has been developed to retain 3D freedom and has, smaller resolution of deposition, which allows for greater control of internal and external geometries In addition, the material used in Concrete Printing is a high performance fiber-reinforced fine-aggregate concrete resulting in superior material properties to those obtained in the CC technology.

Concrete printing requires additional support to create overhangs and other freeform features. It use, second material, in a similar manner to the FDM method. The disadvantage of this process is that an additional deposition device is needed for the second material resulting in more maintenance, cleaning and control instructions and the secondary structure must be cleaned away in a post processing operation.

Drawbacks of Concrete Printing Technology(1) The trade-off necessary for maintaining its dimensional accuracy makes the process quite slow with regards to the envisioned industrial application,(2) Although the technology initially aimed at the veneration of 3D topologies rather than 2.5 D. the use of second material to support overhangs reduces the efficiency and flexibility of the process while increasing its material cost,(3) Dimensions and possibilities in terms of shape-design are limited by the dimensions of the printing frame3.

and Concrete Printing technologies, while demonstrating many technological advantages, are subjected inherent limitations such as the necessity of using new and advanced machinery, small mineral some aggregate sizes (fine-aggregate mortar rather than concrete), and limited size of the printed elements (i. e. the size of the 3D printer must be larger than the size of the element to be printed).

To overcome these limitations, a novel approach for 3DCP technology for on-site construction, named CONPrint 3D, is currently being developed at the TU Dresden, Germany, which intends to bring 3DCP directly into the building sites. The main advantages of CONPrint 3D technology are high geometrical flexibility, usage of commonly used construction machinery and low dependency skilled labour. READ MORE (Working,Advantages,Disadvantages,purposes)Originally published at

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Brief Analysis of the Importance of Preventive Maintenance Management on Medical Equipment
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Brief Analysis of the Current Development Status and Trend of Chinese Medical Device
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Let's Briefly Introduce the Application of Enzymes Immune Detector in Pesticides and Food
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How Does the Magnetic Pearl Nucleic Acid Extraction Extract Nucleic Acid and Where Is the Advantage?
How Does the Magnetic Pearl Nucleic Acid Extraction Extract Nucleic Acid and Where Is the Advantage?
  Author:MeCan Medical–ultrasound machine manufacturersAs one of the current effective epidemic prevention and control methods, nucleic acid extraction and testing are no stranger to everyone. Prior to this, the method of extracting the traditional nucleic acid was chemical cracking and cylindrical method. However, with the rapid development of gene diagnosis, genetically modified food detection, and personalized medical care, traditional nucleic acid extraction technology can no longer meet the needs of today's biotechnology. As a result, magnetic pearl nucleic acid extraction came into being.No. A commercialized reagent that used the magnetic bead method to extract DNA and successfully applied for patents in the United States appeared in 1998. The magnetic bead method first absorbs the free nucleic acid molecule to the surface of the magnetic particles by cracking the cells, while the protein and polysaccharides are left in the solution. Under the influence of the magnetic field, the magnetic particles are separated from the liquid to discard the liquid to eliminate the liquid Later, the purified nucleic acid molecules were obtained after being eluted.The magnetic bead method uses the principle of combining and dissipating the magnetic acid activity group with a magnetic granular activity group under certain conditions to avoid the loss of nucleic acid during the extraction process as much as possible, and it can also remove the interference substances in the specimen (such as hemoglobin The effects of bilirubin and lipid blood), obtain high -quality nucleic acid templates. With the development of magnetic bead method extraction technology, DNA extraction has really begun to achieve standardization, rapidness and automation.The kits based on the magnetic acid extractor of the Magnetic Pearl Method are also widely used. Nucleic acid extraction kit does not require any organic solvent and no need to repeat centrifugation. At present, it can extract high -quality DNA and RNA from full blood, serum, plasma, saliva, urine, feces, cerebrospinal fluid, tissue and cells, and shorter time. The recovery rate is higher. And it can be automated and uninvited through mechanical equipment.In addition, the principle of magnetic pearl method is safe and non -toxic, and does not use toxic reagents such as benzene and chloroform in traditional methods. Mainstream nucleic acid extraction methods at home and abroad.
What Is the Extraction Step of the Magnetic Pearl Nucleic Acid Extract Instrument and What Are the C
What Is the Extraction Step of the Magnetic Pearl Nucleic Acid Extract Instrument and What Are the C
  Author:MeCan Medical–ultrasound machine manufacturersThe nucleic acid extract instrument is a supporting nucleic acid extract reagent from the motion to complete the sample nucleic acid extraction work. In the detection of the new crown, nucleic acid extraction is a very important step. At present, the extraction principle of nucleic acid extract instruments on the market is mainly divided into two types: magnetic bead method and membrane adsorption method, of which magnetic bead method occupies the mainstream market. So, what is the extraction step of the magnetic pearl nucleic acid extract instrument?Step 1: Add samples to the cracking solution.Step 2: In the cracking solution, the rupture cells release the nucleic acid to the cracking solution to transfer the magnetic beads to the cracking solution step 3: Fully mix the nucleic acid to adsorb the specific package on the surface of the magnetic beads.Step 4: Repeat the surface of the magnetic beads to remove impurities such as the unnecessary nucleic acid, protein or salt that are not needed.Step 5: Move the magnetic beads into the eluing solution and mix it fully. The nucleic acid is falling off from the surface of the magnetic bead and dissolved into the elution buffer.The magnetic pearl nucleic acid extract instrument is matched with different types of magnetic pearl nucleic acid extract reagents, and multiple samples are operated at the same time, which automatically separate the extraction and purification DNA/RNA from multiple samples such as blood, cells, tissues, viruses. The instrument uses a special magnetic stick adsorption, transfer, and releases magnetic beads to achieve the transfer of sample/magnetic bead/nucleic acid, avoiding liquid treatment, and increasing the degree of automation.Nucleic acid detection, as an important means of screening of new crown virus screening, is expected to maintain a high position for a period of time at home and abroad. The corresponding nucleic acid extract will be very strong in a considerable period of time. The operation is automated, fast, and simple, which provides a strong guarantee for the detection of new crown nucleic acid.
What Is the Working Principle of Magnetic Pearl Nucleic Acid Extract Instrument? What Are the Charac
What Is the Working Principle of Magnetic Pearl Nucleic Acid Extract Instrument? What Are the Charac
  Author:MeCan Medical–ultrasound machine manufacturersNucleic acid extraction instrument is an instrument that uses a supporting nucleic acid extract reagent from the motion to complete the sample nucleic acid extraction work. It is widely used in various fields such as disease control centers, clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, animal husbandry and molecular biology research. In fact, with the normalized management of the epidemic, the nucleic acid extract instrument, as one of the commonly used equipment tested by various hospitals, has a higher frequency and the number of purchases has continued to rise. In fact, although everyone is familiar with the term of the nucleic acid extract instrument now, but it is very familiar with the term, but it is very familiar with the term of the nucleic acid extract instrument, but it is very familiar with the term, but it is very familiar with the term. I do nt know how to work and test the method of working principles. Let s take a closer look at the editor of Prank Medical Equipment.There are many classifications of nucleic acid extract instruments. In fact, the most commonly used is magnetic bead method. How does this method work? Magnetic pearl nucleic acid extract instrument is generally divided into two types: suction method and magnetic stick method. The specific operation process is as follows:First, suction method. The extraction of nucleic acids is achieved by fixed magnetic beads and metastasis liquids. Generally, the transfer of the robotic arm is generally controlled by the operating system.1. Crack. Add a cracking solution to the sample to achieve mixing and adequate reactions of the reaction solution through mechanical exercise and heating, cell cracks, and release nucleic acids.2. Adsorption. Add magnetic beads to the sample cracking solution and mix it in full. Use magnetic beads to adsorb nucleic acid under high salt and low pH value. Under the action of magnetic fields, the magnetic beads are separated from the solution. Mo the liquid out of the waste liquid tank and abandon the head.3. Washing. Remove the external magnetic field, add the new suction head to add the washing buffer, mix it fully, remove the impurities, and remove the liquid out of the magnetic field.4. Requesting. Withdrawing the magnetic field and adding the new suction head to add the elution buffer, fully mixed, the combined nucleic acid is separated from the magnetic bead, so as to obtain a purified nucleic acid.Second, magnetic stick method. By fixed liquids, the magnetic acid is separated to achieve the separation of nucleic acids. The principle and process are the same as the pumping method. The difference is the method of separation of magnetic beads and liquids. The magnetic stick method is to separate the magnetic beads from the waste liquid through the adsorption of the magnetic rod to the next step to achieve the extraction of nucleic acid.In fact, the characteristics of this magnetic pearl nucleic acid extract instrument is that it can achieve automation, high -throughput operations, safe and reliable operations, high efficiency, and pollution -free. Therefore, it is recognized by many buyers. When choosing a nucleic acid extraction instrument equipment, no matter which type of device is selected, you must have a basic understanding of it. You cannot judge the quality of the product from the price alone. For more product details, you can consult: 400-6656 -888.
What Are the Advantages of Magnetic Pearl Nucleic Acid Extraction Instrument? Look at These 4 Points
What Are the Advantages of Magnetic Pearl Nucleic Acid Extraction Instrument? Look at These 4 Points
  Author:MeCan Medical–ultrasound machine manufacturersIn recent years, the nucleic acid extract in the principle of magnetic beads has become the mainstream nucleic acid extraction equipment. So, what are the advantages of magnetic pearl nucleic acid extract? The magnetic bead method nucleic acid extract instrument is based on the magnetic beads, using magnetic beads to adsorb nucleic acid under high salt and low pH, separates the characteristics of separation from nucleic acid under the low salt and high pH value, and then use mobile magnetic beads or transfer liquid to achieve nucleic acids. The entire extraction process.The weight of the magnetic pearl nucleic acid extract instrument is the adsorption ability of magnetic beads and nucleic acids, which directly affects the output of the extraction nucleic acid. The principle of the magnetic bead method is to crack the cell first, and then combine the nucleic acid and the magnetic bead by binding the liquid. Wash the residual protein and salt ions with the washing solution. Then separate the nucleic acid and magnetic beads.This technology can separate high -purity nucleic acids from samples such as animals and plants, body fluids, and environment. Suitable for downstream applications such as PCR, Q-PCR, molecular hybridization, sequencing, etc. Because of its highly friendly operation of magnetic beads, high nucleic acid purity, and simple automation, it has been widely used in the fields of molecular cloning, molecular hybridization, and molecular diagnosis. The specific advantages of the magnetic pearl nucleic acid extraction device are reflected:1. It can realize automation and massive operations. At present, there are hundreds of pellet nucleic acid extract instruments. The extraction time of a sample can be treated with more than a hundred samples. Perform fast and timely response.2. The operation is simple and short. The entire extraction process is only four steps, and most of them can be completed within 15-40 minutes.3. Safe and non -toxic, do not use toxic reagents such as benzene and chloroform in traditional methods to reduce damage to experimental operators.4. The specific combination of magnetic beads and nucleic acids makes the extracted nucleic acid high purity and large concentration.The magnetic pearl nucleic acid extract instrument is matched with different types of magnetic pearl nucleic acid extract reagents, and multiple samples are operated at the same time, which automatically separate the extraction and purification DNA/RNA from multiple samples such as blood, cells, tissues, viruses. The instrument uses a special magnetic stick adsorption, transfer, and releases magnetic beads to achieve the transfer of sample/magnetic bead/nucleic acid, avoiding liquid treatment, and increasing the degree of automation.The fully automatic nucleic acid extraction instrument of Proven Medical Device manufacturers is based on the magnetic rod on the magnetic rod to adsorb magnetic beads and move the magnetic beads to different reagent grooves. It can apply the extraction of nucleic acids and proteins of various samples. Just add detection samples and reagents and 96 deep -hole plates. Each independent experimental cabin can run 2 96 deep -hole plates at the same time. 24 samples. It is suitable for both a small amount of sample extraction and the high -throughput extraction required for a large amount of samples.
What Is the Principle of Magnetic Pearl Nucleic Acid Extraction Instrument? What Are the Advantages?
What Is the Principle of Magnetic Pearl Nucleic Acid Extraction Instrument? What Are the Advantages?
  Author:MeCan Medical–ultrasound machine manufacturersIn recent years, the nucleic acid extract in the principle of magnetic beads has become the mainstream nucleic acid extraction equipment. Speaking of magnetic beads, then we must first understand what is magnetic beads? Magnetic beads are formed by a certain tissue package being absorbed by the core of the four -iron oxidation triple iron. It can be adsorbed by the magnet. At the same time, there are magical little beads that can adsorb (binding) nucleic acids that can be adsorbed by the surface bread. It can achieve automation and high -throughput of nucleic acid extraction.Magnetic beads are generally divided into three layers of structure: inner layers: the kernels for supporting structures, such as polystyrene. The middle layer: the magnetic layer, the role is to adsorb the magnets on the magnetic frame, which is to separate the nucleic acid and the reactive solution. The material is usually Fe3O4. Outer layer: modified layer, generally a negative group.The weight of the magnetic pearl nucleic acid extract instrument is the adsorption ability of magnetic beads and nucleic acids, which directly affects the output of the extraction nucleic acid. The principle of the magnetic bead method is to crack the cell first, and then combine the nucleic acid and the magnetic bead by binding the liquid. Wash the residual protein and salt ions with the washing solution. Then separate the nucleic acid and magnetic beads.This technology can separate high -purity nucleic acids from samples such as animals and plants, body fluids, and environment. Suitable for downstream applications such as PCR, Q-PCR, molecular hybridization, sequencing, etc. Because of its highly friendly operation of magnetic beads, high nucleic acid purity, and simple automation, it has been widely used in the fields of molecular cloning, molecular hybridization, and molecular diagnosis. The specific advantages of the magnetic pearl nucleic acid extraction device are reflected:1. It can realize automation and massive operations. At present, there are hundreds of pellet nucleic acid extract instruments. The extraction time of a sample can be treated with more than a hundred samples. Perform fast and timely response.2. The operation is simple and short. The entire extraction process is only four steps, and most of them can be completed within 15-40 minutes.3. Safe and non -toxic, do not use toxic reagents such as benzene and chloroform in traditional methods to reduce damage to experimental operators.4. The specific combination of magnetic beads and nucleic acids makes the extracted nucleic acid high purity and large concentration.The fully automatic nucleic acid extraction instrument of Proven Medical Device manufacturers is based on the magnetic rod on the magnetic rod to adsorb magnetic beads and move the magnetic beads to different reagent grooves. It can apply the extraction of nucleic acids and proteins of various samples. Just add detection samples and reagents and 96 deep -hole plates. Each independent experimental cabin can run 2 96 deep -hole plates at the same time. 24 samples. The PLH-96 (4x24) nucleic acid extract instrument is suitable for a small amount of sample extraction and the high-throughput extraction required for a large amount of samples.
What Kind of Home Ventilator to Buy Snoring? How to Choose-Pulang Medical
What Kind of Home Ventilator to Buy Snoring? How to Choose-Pulang Medical
  Author:MeCan Medical–ultrasound machine manufacturersWe need to understand which types of household ventilator can be divided into two categories, one is used to treat sleep ventilator with sleep disorders such as snoring and obstructive respiratory apnea, and the other is used to treat slow treatment slow treatment Pulmonary disorders such as lung, slow slow support, and respiratory dysfunctional disorders. The two are slightly different in patterns, parameters, and algorithms. The models are also different.Our common home ventilator is mainly divided into these modes, namely: CPAP, APAP, Auto BPAP and other modes. It is mainly for snoring patients. Which mode of home respiratory machine is good? The editor of the Proven Medical Equipment manufacturer will introduce it in detail.1. Single horizontal ventilator -CPAPSingle -horizontal ventilator CPAP is a single horizontal ventilator. This mode is the basis of the ventilator. The advantage is that the principle is simple, the technology is mature, and there is no special differentiation between the brands. The price is also cheaper, suitable for buying in patients with snoring.2. Dual -level ventilator -BPAPThe BPAP of the dual -horizontal ventilator will provide a higher inhalation pressure and a lower exhalation pressure. When the patient is inhaled, the pressure is large. When the patient exhales, the pressure is less. It can help patients to complete their breath smoothly, and comfort can be described as greatly improved.We must have a certain consciousness of the danger of snoring. If we are serious, in early intervention, under the guidance of a doctor, use household ventilator to assist, at the same time improve our own daily life, good eating habits, exercise more, improve ourselves Snoring. If you want to know more about the product information of more home ventilator, you can consult: 400-6656-888.
How to Use Sleep Ventilator? Tell You These Five Operation Steps
How to Use Sleep Ventilator? Tell You These Five Operation Steps
  Author:MeCan Medical–ultrasound machine manufacturersHousehold ventilator is mainly home medical devices for crowds such as snoring and breathing. This ventilator is mainly used during sleep, so it is also called sleep ventilator. With the continuous development of science and technology, sleep ventilator products are constantly iterating. Small and light, complete function, simple operation, and more and more become the demand for the use of the majority of users. Many people buy sleep ventilator but don't understand how to use it. Let's take a look at it.Sleep ventilator operation steps:Step 1: Add water to the humidifierTake out the water tank in the wetter, and then add pure water. The high water line is marked on the water tank, which does not exceed the water level line.Step 2: Connect the pipelineOrdinary pipelines are regardless of positive and negative. The pipelines of the sleep ventilator connect the host outlet and connect the air mask. If it is a heating pipeline, one end with a power -on interface is needed to connect to the host outlet, and the other end is connected to the pneumatic mask.Step 3: Connect the power supplyThis step is not difficult for everyone. It is like using any home appliances to connect the power supply before, and the sleep ventilator is no exception. One end of the power cord is inserted on the socket and the other is inserted on the machine.Step 4: wear a ventilatorRegardless of whether you use nasal pad masks, nasal masks, or full -faced masks, you must adjust the headband and mask to the place where you feel comfortable. The tightness can be adjusted freely, and the mask can not leak.Step 5: bootAfter all preparations are completed, just press the boot key to turn on the sleep ventilator treatment mode. Some vessels have intelligent startup functions, that is, wearing a breathing machine mask to breathe once, and the ventilator will automatically turn on. You can manually press the switch without a smart ventilator. The vast majority of the ventilator is pressed gently. A small number of machines need to be pressed.In addition, there is also a very important step is parameter settings. This link is operated by professionals, that is, after buying sleep ventilator, professionals will perform parameter settings according to your situation. If you encounter problems during use, please contact the professionals to seek help. Remember not to adjust your ginseng or change the treatment mode at will.
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