Methodological advances in on-chip technology enable high-throughput drug screening, such as droplet-array sandwiching technology. Droplet-array sandwiching technology involves upper and lower substrates with a droplet-array designed for a one-step process. This technology is, however, limited to batch manipulation of the droplet-array. Here, we propose a method for selective control of individual droplets, which allows different conditions for individual droplet pairs. Electrowetting-on-dielectric (EWOD) technology is introduced to control the height of the droplets so that the contact between droplet-pairs can be individually controlled. Circular patterns 4 mm in diameter composed of electrodes for EWOD and hydrophilic-hydrophobic patterns for droplet formation 4 μl in volume were developed. We demonstrate the selective control of the droplet height by EWOD for an applied voltage up to 160 V and selective control of the contact and transport of substances. Presented results will provide useful method

TY - JOUR. T1 - A highly efficient bead extraction technique with low bead number for digital microfluidic immunoassay. AU - Huang, Cheng Yeh. AU - Tsai, Po Yen. AU - Lee, I. Chin. AU - Hsu, Hsin-Yun. AU - Huang, Hong Yuan. AU - Fan, Shih Kang. AU - Yao, Da Jeng. AU - Liu, Cheng Hsien. AU - Hsu, Wen-Syang. PY - 2016/1/1. Y1 - 2016/1/1. N2 - Here, we describe a technique to manipulate a low number of beads to achieve high washing efficiency with zero bead loss in the washing process of a digital microfluidic (DMF) immunoassay. Previously, two magnetic bead extraction methods were reported in the DMF platform: (1) single-side electrowetting method and (2) double-side electrowetting method. The first approach could provide high washing efficiency, but it required a large number of beads. The second approach could reduce the required number of beads, but it was inefficient where multiple washes were required. More importantly, bead loss during the washing process was unavoidable in both methods. ...

We present an architectural design and optimization methodology for performing biochemical reactions using two-dimensional electrowetting arrays. We define a set of basic microfluidic operations and leverage electronic design automation principles for system partitioning, resource allocation, and operation scheduling. Fluidic operations are carried out by properly configuring a set of grid points. While concurrency is desirable to minimize processing time, the size of the two-dimensional array limits the number of concurrent operations of any type. Furthermore, functional dependencies between the operations also limit concurrency. We use integer linear programming to minimize the processing time by automatically extracting parallelism from a biochemical assay. As a case study, we apply our optimization method to the polymerase chain reaction.

Researchers of the department of Physics of Complex Fluids of the University of Twentes MESA+ institute have succeeded in increasing the effectivity of condensation through gravity-driven electrowetting. We have been able ...

Electrokinetics applications, such as dielectrophoresis and electrowetting can be accurately simulated using FLOW-3D CFD software.

INSTITUTE OF PHYSICSPUBLISHING J.Phys.: Condens. Matter 17 (2005) R705 R774 JOURNAL OFPHYSICS: CONDENSED MATTER doi: / /17/28/r01 TOPICAL REVIEW Electrowetting: from basics to applications

The widespread dissemination of CTX-M extended spectrum β-lactamases among Escherichia coli bacteria, both in nosocomial and community environments, is a challenge for diagnostic bacteriology laboratories. We describe a rapid and sensitive detection system for analysis of DNA containing the blaCTX-M …

Impedimetric measurement methods are a novel approach to the characterization of fluid in biological applications. Lab on a chip (LOAC) technologies could be combined with impedimetrics to benefit these applications. LOAC devices are currently being developed to pursue the miniaturization of larger scale processes. Current research shows great flexibility in using LOAC devices to reproduce biological processes such as those used in medical diagnostic applications. With a smaller form factor, testing that generally requires off-site lab usage can be deployed at the point-of-care. LOAC devices also have the potential to lower operating costs by reducing reagent volumes, labor costs, and cycle times.. Digital microfluidic devices (DMF) are one promising LOAC platform. These devices manipulate discrete droplets of fluid using electric fields. As such, DMF devices can create, move, merge, and mix droplets while eliminating mechanical components like channels, pumps, and valves. Manipulation of ...

Technical advances in electrowetting-on-dielectric (EWOD) over the past few years have extended our attraction to three-dimensional (3D) devices capable of providing more flexibility and functionality with larger volumetric capacity than conventional 2D planar ones. However, typical 3D EWOD devices require c

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The appellate courts decision deals a blow to a 2017 Columbia University lawsuit that alleged Illumina infringed one of the invalidated patents.

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A portable electronic device having an adaptable skin covering a substantial portion of the portable electronic device and configured to display a customizable image. The image to be displayed may be input from a user of the portable electronic device, or may be transmitted to the portable electronic device through a wireless communication network. In a preferred embodiment, the adaptable skin is touch sensitive, and the skin image to be displayed includes indicia for selection. The adaptable display may be any adaptable display technology, including electrophoretic displays, electrowetting displays, dielectrophoresis displays, bistable LCDs, and preferably electrochromic displays. A wireless communication network and methods for providing skin images to a portable electronic device are also disclosed.

A display or light-modulating device incorporates one or more measures of liquid that obstruct or filter light that passes onto or through the liquid; a space distribution of different light-modulating filters, optical instrument or materials or of materials that change the frequency or color of light passing onto or through them, to emit a different frequency or color of light; and means to apply electrowetting effect to controllably modulate the location or shape of one or more measures of a polar or conductive liquid, so that at least some portion of one or more light-obstructing or light-filtering measures of liquids is caused to be located between one or more light sources and the space distribution of light-modulating filters, optical instruments or light-modulating materials, or said space distribution of materials that change the frequency or color of light passing onto or through them, to emit a different frequency or color of light, thereby controllably modulating properties of light emitted

A series of microactuators for manipulating small quantities of liquids, and methods of using these for manipulating liquids, are disclosed. The microactuators are based on the phenomenon of electrowetting and contain no moving parts. The force acting on the liquid is a potential-dependent gradient of adhesion energy between the liquid and a solid insulating surface.

The vector stencils library Resistors contains 14 element symbols of resistors for drawing electronic schematics, circuit diagrams and electrical drawings. A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Resistors act to reduce current flow, and, at the same time, act to lower voltage levels within circuits. Resistors may have fixed resistances or variable resistances, such as those found in thermistors, varistors, trimmers, photoresistors and potentiometers. The current through a resistor is in direct proportion to the voltage across the resistors terminals. This relationship is represented by Ohms law ... Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors can be composed of various compounds and films, as well as resistance wires (wire made of a high-resistivity alloy, such as nickel-chrome). Resistors are also implemented within

A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the same inductor. Subsequently, the capacitors are alternately discharged for their corresponding light emitters through the same inductor. Also, the magnetic susceptibility of the LED drive circuit is reduced by using magnetic flux canceling in the inductor. In one embodiment, a toroidal inductor is used with geometric symmetry and its magnetic flux. In another embodiment, a dual core closed bobbin shielded inductor is used.

The biological function of a gene often depends on spatial context, and an atlas of transcriptional regulation could be instrumental in defining functional elements across the genome. Despite recent advances in single-cell RNA sequencing and in situ RNA imaging, fundamental barriers limit the speed, genome-wide coverage, and resolution of de novo transcriptome assembly in space. Here, I discuss potential next-generation approaches for the de novo assembly of the transcriptome in space, and propose more efficient methods of detecting long-range spatial variations in gene expression. Finally, I discuss future in situ sequencing chemistries for visualizing biological pathways and processes in tissues so that genomics technologies might be more easily applied to conditions of human health and disease.. ...

AUTOMATED DNA SEQUENCERS FOR SALE Three ABI 373 DNA sequencers are available for sale. Please contact Dr. Eric Rappaport (rappaport at email.chop.edu) with offers or questions. Details of the equipment configuration follow: Two 373 units with Stretch upgrades: Filters - 5-filter wheel (can choose between 2 different sets of 4 different dyes). Chemistries - Standard Taq (FS) terminator, dye primer or ABI T7 DNA polymerase sequencing chemistry. All current Genescan chemistries, including microsatellite panels, primers labeled during synthesis with standard ABI dyes (6-Fam, Hex, Tet, Tamra) or (6-Fam, Hex, Tamra, and Rox). Gel lengths - Multiple gel (well-to-read) lengths including 48 cm (standard long-read [,650 nt] sequencing length), 34 (shorter sequence reads [550-600 nt] or high-resolution Genescan applications), 24 (microsatellite applications) 12 (lower-resolution Genescan applications) or 6 (lower-resolution Genescan applications). Scan Speed - 1X, BaseSprinter (2X, but limited to middle ...

It combined an in vitro paired-tag library with emulsion PCR, an automated microscope, and ligation-based sequencing chemistry to sequence an E. coli genome at an accuracy of > 99.9999% and a cost approximately 1/10 that of Sanger sequencing. تکنولوژی توالی یابی SOLID یا oligonucleotide Ligation and detection... https://biotecher.ir/wp-content/uploads/2018/12/Sequencing-by-oligonucleotide-Ligation-and-detection.png, تکنولوژی توالی یابی SOLID یا oligonucleotide Ligation and detection, 2020-05-06 - 16:52 توسط zhila zolfagharian, 2020-05-01 - 14:14 توسط این ایمیل که توی آگهی زدین فک کنم اشتباهه، من هرچی براشون درخواست ارشال میکنم ، برگشت میخوره میگه گیرنده اشتباهه, تمامی حقوق برای زیست‌فن محفوظ است. صحت توالی های خوانده شده با استفاده از این تکنولوژی، در مقایسه با سیستم های ...

DNA sequence chromatograms are interpreted to produce nucleotide sequences (basecalling) and corresponding base call quality estimates but whilst these derived views are more commonly used, the traces remain the ultimate reference source for any queries about that particular sequencing reaction. All commonly used sequence assembly packages (for example Bonfield at al, 1995), include proprietary trace browsers to help the user (finisher) distinguish poor quality data from good and so work backwards to recreate a representation of the original sequence. Furthermore, in regions with either trace artifacts specific to a particular sequencing chemistry, or general background contamination, an experienced finisher might be able to diagnose correctly the underlying problem and provide a better basecall when provided with a suitable view of the original trace. As with contig assembly, trace availability can increase the success rate of STS development from ESTs by enabling an optimal estimation of the ...

Original Message ----- ,From: ,[email protected], ,To: Michael Tope ,[email protected],; AMPS ,[email protected], ,Sent: Saturday, January 24, 2004 6:05 AM ,Subject: Re: [Amps] Alpha 78 B- Resistor , , ,, ** GLOBAR-KANTHALs Type SP resistors are superior to garden-variety ,, wirewound resistors for glitch service. (phone order # 716 286 7610) ,, , ,Even if I replace the 25 ohm wirewound with a globar style ,resistor, it is still shunted with R112 and R113 which ,for a voltage divider which drives the plate overcurrent ,relay circuit. These are small carbon composition resistors ,that will likely flash over during an anode glitch. ** AGREED ,On the ,other hand, if I put a 25 ohm globar in series with the ,anode, during a glitch the anode supply will try to divide ,between the anode glitch resistor and R111 in the B- ,return. In this case, R111 would flash over and the anode ,glitch R would take the full anode voltage and ultimately limit the glitch ,current to a safe value, so ...

It is the drawing of the total plant of low temperature liquid nitrogen grinding pulverizer machine including feeding screw conveying machine and vibrating screening machinerushing chamber and the electric control cabinet are displayed for your reference onlyemarks the storage tank for liquid nitrogen is supplied by customers.

Weve all been there. A big bag of resistors all mixed up. Maybe you bought them cheap. Maybe your neatly organized drawers spilled. Of course, you can excruciatingly read the color codes one by one. Or use a meter. But either way, it is a tedious job. [Ishanns] solution was to build an automatic sorter that directly measures the value using a voltage divider, rather than rely on machine vision as is often the case in these projects. That means it could be modified to do matching for precise circuits (e.g., sort out resistors all marked 1K that are more than a half-percent away from one nominal value).. There is a funnel that admits one resistor at a time into a test area where it is measured. A plate at the bottom rotates depending on the measured value. In the current implementation, the resistor either falls to the left or the right. It wouldnt be hard to make a rotating tray with compartments for different values of resistance. It looks like you have to feed the machine one resistor at a ...

TY - JOUR. T1 - Effects of virtual resistor in power electronic converter on subsynchronous oscillation damping. AU - Rizqiawan, Arwindra. AU - Fujita, Goro. AU - Funabashi, Toshihisa. AU - Nomura, Masakatsu. PY - 2011/11. Y1 - 2011/11. N2 - Virtual impedance concept provides the impedance effects without need to put real physically impedance in the circuit. In power system, oscillation will not occur as long as the impedance seen by turbine-generator set is passive. In order to ensure the impedance is seen as passive by the turbine-generator set, a series resistor can be placed in the system. This paper proposes implementation of virtual resistor concept in grid connected power electronic converter to replaced the aforementioned series resistor, then analyze its impact on subsynchronous oscillation phenomena. It can be shown that virtual resistor can improve the negative region of converter input admittance. Moreover, it also gives us better damping in system involving grid connected ...

Probably the most common type of variable inductor today is one with a moveable ferrite magnetic core, which can be slid or screwed in or out of the coil. Moving the core farther into the coil increases the permeability, increasing the magnetic field and the inductance. Many inductors used in radio applications (usually less than 100 MHz) use adjustable cores in order to tune such inductors to their desired value, since manufacturing processes have certain tolerances (inaccuracy). Sometimes such cores for frequencies above 100 MHz are made from highly conductive non-magnetic material such as aluminum.[21] They decrease the inductance because the magnetic field must bypass them.. Air core inductors can use sliding contacts or multiple taps to increase or decrease the number of turns included in the circuit, to change the inductance. A type much used in the past but mostly obsolete today has a spring contact that can slide along the bare surface of the windings. The disadvantage of this type is ...

A capacitor is charged to store the necessary Joules of energy to be discharged across the torso/heart, modelled by the resistor on the right. When the toggle switch is flipped from CHARGE to SHOCK we want all the energy to pass through the torso, but we also want to control the duration of the discharge. Adding an inductor in series with C and R, the torso resistance creates a second order circuit and gives the designer another parameter to control timing. What would be wrong with adding a resistor in series where the inductor is? The inductor can store magnetic energy, but, like the capacitor, does not dissipate energy. Next comes the math necessary to develop the equations and formulas that reveal the timing of the circuit: Use Kirchoffs current law. There are two nodes: one between the capacitor and inductor, and the other between the inductor and the resistor. We assume you remember from the tutorial, or your exposure to circuits, that 1/sC is the Laplace transform version of capacitor ...

EWOD 1 (1 pt): Short interval: Run: 4 rounds of 90s on, :60s off EWOD 2 (1 pt): Long interval: Run: Repeat 800m, recover 2:00 until form/pace deteriorates. EWOD 3 (2 pts): Choose ONE of the following ...

Li-cor was designed for use with dye primer rather than dye terminator chemistry, hence Licor software is not reading the output gels correctly and is producing corrupted SCF files. Does anyone have experience or information about this? Thank you for your help Aedin ...

Defects and jagged surfaces at the edges of nanosized platinum and gold particles are key sites for chemical reactivity, a new study found.

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Resistor elements for MOS integrated circuits are made by an ion implant step compatable with a self-aligned N-channel silicon-gate process. The resistor elements are beneath the field oxide in the finished device, although the implant step is prior to formation of the thick oxide. Resistors of this type are ideally suited for load devices in static RAM cells.

The NPort 5650-8-DT device servers support selectable 1 kilo-ohm and 150 kilo-ohms pull high/low resistors and a 120-ohm terminator. In some critical environments, termination resistors may be needed to prevent the reflection of serial signals. When using termination resistors, it is also important to set the pull high/low resistors correctly so that the electrical signal is not corrupted. Since no set of resistor values is universally compatible with all environments, NPort 5600-8-DT device servers use DIP switches to allow users to adjust termination and pull high/low resistor values manually for each serial port.. ...

So… you just want to light up an LED. What resistor should you use?. Maybe you know the answer, or maybe everyone already assumes that you should know how to get to the answer. And in any case, its a question that tends to generate more questions before you actually can get an answer: What kind of LED are you using? What power supply? Battery? Plug-in? Part of a larger circuit? Series? Parallel?. Playing with LEDs is supposed to be fun, and figuring out the answers to these questions is actually part of the fun. Theres a simple formula that you use for figuring it out, Ohms Law. That formula is V = I × R, where V is the voltage, I is the current, and R is the resistance. But how do you know what numbers to plug into that formula to get out the right resistor value?. To get the V in our formula, we need to know two things: the voltage of our power supply, and the voltage of our LEDs.. Lets start with a concrete example. Suppose that we are using a 2 × AA battery holder (like this one from ...

Resistors are electrical components which limit the flow of electrons passing through in an electric circuit. Buy worlds best resistors at an affordable price, we provide guaranteed to each of our product. Order Now!. ...

What do you do if youre laying out a PCB, and you need to jump over a trace, but dont want to use a via? The usual trick is using a zero Ohm resistor to make a bridge over a PCB trace. Zero Ohm resistors - otherwise known as wire - are a handy tool for PCB designers who have backed themselves into a corner and dont mind putting another reel on the pick and place machine. Heres a new product from Keystone that is basically wire on a tape and reel. Its designed to jump traces on a PCB where SMD zero ohm resistors and through-hole jumpers arent possible. I suppose you could also use it as a test point. Theyre designed for high current applications, but before we get to that, lets consider how much power is dissipated into a zero ohm resistor.. By the way, as of this writing, Mouser is showing 1,595 for Keystones 5100TR PCB jumpers in stock. They come on a reel of 1,000, and a full reel will cost you $280. This is significantly more expensive than any SMD zero ohm resistor, and it means ...

Hi everybody, How can I measure an unknown inductor? I cant use oscillator and can use digital multimeter. If you can, please help me. Thank... Zaw

The SC54B Series are fixed low current unshielded surface mount inductors with inductance range from 10uH - 220uH and DC resistance from 0.1Ω - 1.57Ω.

The SCNR3015 Series are fixed low current unshielded surface mount inductors with inductance range from 1.0uH - 47uH and DC resistance from 0.038Ω - 1.64Ω.

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The unit features single L-N mode protection only, as witnessed by the parallel connection of the PCB across the live and neutral with no reference to earth. A single MOV is used, suggesting the surge absorbance capabilities is relatively limited. The MOV is protected by a nearby thermal fuse, rated at 130 degrees C. The input has EMI/spike suppression provided by an X2 safety capacitor rated at 0.1uF. Aside from this, the remaining components are used to drive the LED - half-wave rectified AC is passed through a resistor to the indicator LED. The resistor value cannot be ascertained reliably as the resistor is the culprit, causing heat that has damaged the colour banding and caused burn marks around it.. This board does not disconnect the load upon failure of the surge protection element. In fact, the surge protection element is practically self-contained, and relies on the tripping of the thermal fuse to indicate its failure. Should the MOV (and or capacitor) not be present or be open circuit, ...

Im signing up for classes and know no one that is going for nursing. So, what do you recommend? Chemistry on Tuesday and Thursdays or just Thursday? I already have A&P on Mon., Wed., and Fri.

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The quality of indoor air is of increasing concern because it is closely related to human health. An air handling unit (AHU) can be used to control the quality of indoor air with respect to particulate matter and CO2, as well as providing air conditioning by regulating the temperature and the humidity. Electrostatic precipitators have high collection efficiencies and low pressure drops. However, their chargers can generate ozone, which is a drawback of applying them to indoor air control. In this study, we compared four discharging electrodes: a 50-µm tungsten wire, a 100-µm tungsten wire, 16-µm aluminum (Al) foil, and carbon fabric composed of 5-10-µm fibers. The carbon-fabric electrode exhibited superior particle collection efficiency and lower ozone generation for a given power consumption compared to the 50- and 100-µm tungsten wires, or the Al foil electrode. This low-ozone-generating, micro-sized electrode can be applied as an electrostatic precipitator in AHUs for indoor air control.

An electrostatic precipitator (ESP) is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit. In contrast to wet scrubbers which apply energy directly to the flowing fluid medium, an ESP applies energy only to the particulate matter being collected and therefore is very efficient in its consumption of energy (in the form of electricity).[citation needed] The first use of corona discharge to remove particles from an aerosol was by Hohlfeld in 1824. However, it was not commercialized until almost a century later. In 1907 Frederick Gardner Cottrell, a professor of chemistry at the University of California, Berkeley, applied for a patent on a device for charging particles and then collecting them through electrostatic attraction-the first electrostatic precipitator. Cottrell first applied the device to the collection of sulphuric acid mist and lead oxide fumes ...

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Electrostatic precipitator (ESP) systems and methods are provided. A system includes at least one corona discharge electrode and at least one collector (and likely, at least a pair of collector electrodes) that extend downstream from the corona discharge electrode. An insulated driver electrode is located adjacent the collector electrode, and where there is at least a pair of collector electrodes, between each pair of collector electrodes. A high voltage source provides a voltage potential to the at least one of the corona discharge electrode and the collector electrode(s), to thereby provide a potential different therebetween. The insulated driver electrode(s) may or may not be at a same voltage potential as the corona discharge electrode, but should be at a different voltage potential than the collector electrode(s).

ABSTRACT Electrostatic precipitators (ESPs) are widely used to eliminate particulate matter emissions from industrial sources. However, the complex electrohydrodynamics (EHD) flow in ESPs can cause controversial conclusions on particle collection. This paper established an ESP model with an additional source term added to the equation of gas momentum conservation. Correlations between particle motion behaviors and EHD flow characteristics were investigated regarding various discharge voltage, particle size, and electrode position. Results show that the EHD flow presented a back-and-forth distribution between the electrode and plate. The peak value of vy can be as high as 0.15 m s-1. The EHD flow can cause four possible types of particle motion status. The dominant factor for particle motion switched between the electric force and drag force along with the particle motion trajectory. There existed an escaping window at the ESP inlet. Particles released from this window penetrated through the ESP

Dust has electrical resistivity properties: Dust collection efficiency is expected to be high in the area where there is normal resistance. Most aerosols fall under the category of normal electrical resistivity. Particles belonging to the low resistivity group show a loss of charge as they reach the collecting plates, thereby reducing the dust collection efficiency to a great extent. As the electrical resistivity increases, the dust collection efficiency of the industrial electrostatic precipitator decreases. There is also the chance of partial discharge from the dust collected at the collecting plates, resulting in frequent flashovers. As a result, there is a reduction in the applied voltage an also in the discharge current. Further increase in the electrical resistivity of the dust particles increases the discharge current to an abnormal range, thereby reducing the applied voltage, a phenomenon called the back corona. A recent development, termed as the moving electrode electrostatic ...

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[158 Pages Report] Air Quality Control Systems Market report categorizes the Global Market by Technology (Flue Gas Desulfurization (FGD), Electrostatic Precipitators, Nitrogen Oxide (NOx) Control Systems, Scrubber & Mercury Control Systems) & Geography (Asia-Pacific, Europe, Americas, Middle East and Africa)

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Baris N. Ozbay,1 Justin T. Losacco,2 Robert Cormack,3 Richard Weir,1 Victor M. Bright,4 Juliet T. Gopinath,3 Diego Restrepo,2 and Emily A. Gibson1,* 1Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045, USA 2Department of Cell and Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045, USA 3Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Colorado 80309, USA 4Department of Mechanical Engineering, University of Colorado Boulder, Colorado 80309, USA *Corresponding author: [email protected] ...

An electrostatic precipitator for purifying air from charged particles. The precipitator includes at least a pair of electrode elements (R and A) spaced apart by a gap distance (a). The electrode elements are moisture-proof. At least one of the electrode elements is composed of a high ohmic cellulose material and is coated with a thin moisture-proof layer.

dry electrostatic precipitators DRY ESP, wet electrostatic precipitators WESP, scrubbers wet absorber WAB, venturi scrubber, spray scrubber, bed scrubber, fabric filters FAB, bag fil

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Modern bioaerosol sampling and analysis techniques that enable rapid detection of low bioagent concentrations in various environments are needed to help us understand the causal relationship between adverse health effects and bioaerosol exposures and also to enable the timely biohazard detection in case of intentional release. We have developed a novel bioaerosol sampler, an electrostatic precipit

Herein, we describe a micro-nuclear magnetic resonance (μNMR) relaxometer miniaturized to palm-size and electronically automated for multi-step and multi-sample chemical/biological diagnosis. The co-integration of microfluidic and microelectronic technologies enables an association between the droplet manage

In an image sensor incorporating a variable focus lens of the electrowetting type, means are provided for reducing or substantially eliminating the occurrence of ghost images. A variable focus lens of the above-mentioned type comprises a housing (5) provided with a first fluid (A) and an axially displaced second fluid (B), the two fluids being non-miscible, in contact over a meniscus (14) and having different indices of refraction. First and second electrodes (2, 12) are provided and the shape of the to meniscus (14) is controllable in dependence on the application of a voltage between the first and second electrodes (2, 12). Various methods of reducing or substantially eliminating the occurrence of ghost images are prepared, including the alteration of the optical properties of an inner and/or outer wall of the housing (5), to reduce the reflectivity thereof, provision of means in the image sensor to intercept ghosting and appropriate selection of the material or combination of materials of which the

Method and apparatus are provided for tempering exhaust or flue gases emanating from a chemical recovery furnace to maintain the gases at a temperature above the dew point thereby preventing condensation and significantly reducing corrosion. The apparatus of this invention includes a gas fired heating unit which heats up sufficient quantities of air to a temperature in excess of the dew point and directs this heated air into an exhaust duct of the recovery furnace and/or into a dust collection device, such as an electrostatic precipitator, located downstream of the recovery furnace. The introduction of heated air into the system may also be utilized to preheat the duct work and precipitator prior to initial operation of the recovery furnace to avoid condensation in a cold system during start-up.

The vector stencils library Inductors contains 41 symbols of inductor elements for drawing electronic circuit diagrams. |br|An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowing through an inductor changes, the time-varying magnetic field induces a voltage in the conductor, according to Faradays law of electromagnetic induction, which opposes the change in current that created it. |br|An inductor is characterized by its inductance, the ratio of the voltage to the rate of change of current, which has units of henries (H). Inductors have values that typically range from 1 µH (10-6H) to 1 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and

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This paper presents a small tube/wire type electrostatic precipitator (ESP). In the ESPs present form, particle charging and collecting voltages and airflow rates were individually varied throughout 200 ambient temperature test runs ranging from 10 to 30 kV in increments on 5 kV and 0.5 m/s to 1.5 m/s, respectively. It was repeatedly observed that, at input air velocities of between 0.5 and 0.9 m/s and voltage settings of 20 kV to 30 kV, the collection efficiency remained above 95%. The outcomes of preliminary tests at combustion flue temperatures are, at present, inconclusive although indications are that there is little or no drop in comparable performance during ideal test conditions. A limited set of similar tests was carried out during which the collecting electrode was grounded, having been disconnected from the static generator. The collecting efficiency fell significantly, and for that reason, this approach was not pursued further. The collecting efficiencies during ambient temperature ...

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A turnkey emission control project (conversion of electrostatic precipitator to pulse-jet fabric filter and a wet lime flue gas desulfurization retrofit) including complete engineering, procurement, construction, startup and commissioning for Huntington Station Unit #2.

High-voltage power supplies with thyristor controllers are the classic high-voltage supply source for electrostatic precipitators.

HTG) is to empower precision medicine at the local level. The companys HTG EdgeSeq technology, which automates sample and targeted library preparation for next-generation sequencing, received its first US Patent in 2014. Continuous improvements led to the 2017 launch of its new direct-target sequencing chemistry for DNA analysis. Additional information is available at www.htgmolecular.com.. ...

the mission of HTG Molecular Diagnostics (HTG) is to empower precision medicine at the local level. The companys HTG EdgeSeq technology, which automates highly multiplexed molecular profiling of minute samples for next-generation sequencing, received its first US patent in 2014. Continuous improvements led to the 2017 launch of HTGs new direct-target sequencing chemistry for DNA analysis offered in the companys VERI/O services laboratory. Additional information is available at www.htgmolecular.com.. CONTACT: ...

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Malvern, PA - Vishay Precision Group, Inc. [1] [NYSE: VPG [2]] has announced that its Vishay Foil Resistors brand (VFR) has released a new video that demonstrates the shunt calibration of strain gages using Bulk Metal Foil resistors. Providing long-term accuracy and stability regardless of the operating environment, foil resistors provide a cost-effective and convenient alternative to using certified weight standards for calibration.. Link to video: http://www.vishaypg.com/foil-resistors/videos/?video=51 [3]. Used extensively in structural testing and monitoring applications, strain gages are fundamental sensing devices that function as the building blocks in transducers, including pressure, load, and torque transducers. For calibration, it is especially useful to utilize shunt resistors when the location of the strain gage beam makes it impractical or extremely difficult to periodically check the accuracy of the bridge circuit using a weight standard.. To illustrate how strain gage measurement ...

Summary. Crowbar Resistors are used to prevent damage to the inverter circuits attached to rotor side when a fault occurs in the grid.. The global Crowbar Resistors market was xx million US$ in 2018 and is expected to xx million US$ by the end of 2025, growing at a CAGR of xx% between 2019 and 2025.. This report studies the Crowbar Resistors market size (value and volume) by players, regions, product types and end industries, history data 2014-2018 and forecast data 2019-2025; This report also studies the global market competition landscape, market drivers and trends, opportunities and challenges, risks and entry barriers, sales channels, distributors and Porters Five Forces Analysis.. Geographically, this report is segmented into several key regions, with sales, revenue, market share and growth Rate of Crowbar Resistors in these regions, from 2014 to 2025, covering. North America (United States, Canada and Mexico). Europe (Germany, UK, France, Italy, Russia and Turkey etc.). Asia-Pacific ...

View Liquid Metal Fork pictures and then jump to the homepage to watch the funniest and most amazing videos selected by our editors

Stock video footage Large drops of liquid metal fall on the white surface and it is stain, leaving large blots and making large splashes and blots. Photographed in slow motion with alpha channel as ...

H. Kim, D.A. Boysen, J.M. Newhouse, B.L. Spatocco, B. Chung, P.J. Burke, D.J. Bradwell, K. Jiang, A.A. Tomaszowska, K. Wang, W. Wei, L.A. Ortiz, S.A. Barriga, S.M. Poizeau, and D.R. Sadoway, Liquid Metal Batteries: Past, Present, and Future, Chem. Rev, 113, 2075-2099 (2013).. ...

Learn fresh ways to create interest in your chemistry lab. These easy, engaging, and safe activities are sure to produce a reaction from your students. Designed for the new teacher, but the experienced can find something useful, too.

Lets say the armrest is broken in your vintage car. As things stand, you would need a lot of luck and persistence to find the right spare part. But in the world of Industrie 4.0 and production with batch sizes of one, you can simply scan the armrest and print it out. This is made possible by the first ever 3D scanner capable of working autonomously and in real time. The autonomous scanning system will be on display at the Hannover Messe Preview on February 6 and at the Hannover Messe proper from April 23 to 27, 2018 (Hall 6, Booth A30). ...

Figure 3. Heres what a water molecule would look like. There is also a peptide builder under the menu entry Build→Insert→Peptide. This dialog window lets you build up a peptide by selecting the amino acids, the terminating fragments and the structure of the peptide. The available structures are straight chain, alpha helix and beta sheet. You can make global adjustments to your molecule by adjusting the hydrogen bonds. You can do a global replacement of changing hydrogens to methyl groups. You also can change the number of hydrogen atoms based on the pH of the molecule. You can save this molecule in several different formats, including CML, GAMESS Input, Gaussian Input, MDL SDfile, PDB, NWChem Input, Sybyl Mol2 and XYZ. Once you are done building your molecule, one of the first things you may want to do is get an idea of what it actually looks like. As a first approximation, you can use the Optimize Geometry function, located under the Extensions menu item. This actually goes through your ...

The accomplishments in the study of the failure mechanisms in metal thin film resistors is presented. The films studied were of the same type employed by several of the major manufacturers of thin film resistive networks. Experiments were carried out to identify the principal physical mechanisms contributing to the degradation of these devices. Chief among these were homogenization of the film composition, stress relief, and ion migration. A computer analysis of manufacturers test data was carried out to determine the nature of the behavior function. The computer was also used to derive from experimental data, an empirical expression for the test resistors as a function of environment, deposition parameters, and time. As a part of this program, the Fourth Annual Physics of Failure in Electronics Symposium was conducted. An evaluation of the symposium is presented. (Author)(*RESISTORS

In this paper, issues related to frequency and noise performance of a CMOS active inductor are addressed. A 2nd order RF bandpass filter based on the active inductor has been implemented in a 0.35 μm CMOS process. Tuned at 900MHz with Q=40, the filter has 27dB SFDR and total current consumption including buffer stage is 17mA with 3V power supply. Experimental results also show the possibility of using them to build higher order RF filter and VCO.. ...

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