TY - JOUR. T1 - Evaluation of interaction between triphenyltin chloride and anions in organic solvents by electrophoresis and conductometric titration. AU - Koizum, Sadayuki. AU - Imato, Toshihiko. AU - Ishibashi, Nobuhiko. PY - 1993/1/1. Y1 - 1993/1/1. N2 - Interactions between triphenyltin chloride (TPTCl) and several anions in organic solvents were evaluated by using a paper electrophoresis and a conductometric titration. Nitrobenzene solutions containing trioctylmethylammonium chloride (TOMACl),(TOMASCN), nitrate (TOMANO3) and perchlorate (TOMAClO4) were used as impregnating solutions for the paper electrophoresis. The 0.1 M TPTCl nitro-benzene solution was spotted on the filter paper impregnated with the nitrobenzene solution of above quaternary ammonium salts. After electrophoresis, the TPTCl spots on the filter paper was detected by spraying a mercury (I) nitrate solution which leads color development. The TPTCl spot migrated toward the anode during electrophoresis when TOMACl and TOMASCN ...

Fresh foods occupy an important position in the human diet. A growing number of consumers are attracted by fresh foods due to their high nutritional value, healthy image, and appealing taste. Electronic tongue based on the concept of global selectivity is a sensor technology that has developed rapidly since last century (1998). Compared with human panelists, it has the advantages of measuring toxic substances, conducting objective analysis and having no detection fatigue. In this paper, the principle, types, and characteristics of electronic tongue are described. The application of electronic tongue to measure sensory and safety index is discussed. Finally, the development of miniaturization of electronic tongues is presented ...

In this paper, three data compression methods are investigated to determine their ability to reduce large data sets obtained by a voltammetric electronic tongue without loss of information, since compressed data sets will save data storage and computational time. The electronic tongue is based on a combination of non-specific sensors and pattern recognition tools, such as principal component analysis (PCA). A series of potential pulses of decreasing amplitude are applied to one working electrode at a time and resulting current transients are collected at each potential step. Voltammograms containing up to 8000 variables are subsequently obtained. The methods investigated are wavelet transformation (WT) and hierarchical principal component analysis (HPCA). Also, a new chemical/physical model based on voltammetric theory is developed in order to extract interesting features of the current transients, revealing different information about species in solutions. Two model experiments are performed, ...

Cava is a quality sparkling wine produced in Spain. As a product with a designation of origin, Cava wine has to meet certain quality requirements throughout its production process; therefore, the analysis of several parameters is of great interest. In this work, a portable electronic tongue for the analysis of Cava wine is described. The system is comprised of compact and low-power-consumption electronic equipment and an array of microsensors formed by six ion-selective field effect transistors sensitive to pH, Na+, K+, Ca2+, Cl−, and CO32−, one conductivity sensor, one redox potential sensor, and two amperometric gold microelectrodes. This system, combined with chemometric tools, has been applied to the analysis of 78 Cava wine samples. Results demonstrate that the electronic tongue is able to classify the samples according to the aging time, with a percentage of correct prediction between 80% and 96%, by using linear discriminant analysis, as well as to quantify the total acidity, pH, volumetric

The detection of myoglobin (Myo), cardiac troponin I (cTnI), creatine kinase-MB (CK-MB), and b-type natriuretic peptide (BNP) plays a vital role in diagnosing cardiovascular diseases. Here we present single site-specific polyaniline (PANI) nanowire biosensors that can detect cardiac biomarkers such as Myo, cTnI, CK-MB, and BNP with ultra-high sensitivity and good specificity. Using single PANI nanowire-based biosensors integrated with microfluidic channels, very low concentrations of Myo (100 pg/mL), cTnI (250 fg/mL), CK-MB (150 fg/mL), and BNP (50 fg/mL) were detected. The single PANI nanowire-based biosensors displayed linear sensing profiles for concentrations ranging from hundreds (fg/mL) to tens (ng/mL). In addition, devices showed a fast (few minutes) response satisfying respective reference conditions for Myo, cTnI, CK-MB, and BNP diagnosis of heart failure and for determining the stage of the disease. This single PANI nanowire-based biosensor demonstrated superior biosensing reliability with the

0073]A further exemplary optional aspect of the present invention provides an apparatus, comprising: a control module that includes a microcontroller, which is generally in a power save mode for a first adaptive time period, with a duration of the first adaptive time period varying depending on responses from external devices; [0074]the microcontroller periodically determines if the first adaptive time period has expired; [0075]if the microcontroller determines that the first adaptive time period has not expired, the microcontroller determines if an interactive unit has been actuated for one of a first and second actuation durations, with the first actuation duration shorter than the second actuation duration; [0076]if microcontroller determines that the interactive unit has not been actuated for one of the first and second actuation durations, the microcontroller maintain the power save mode; [0077]if the microcontroller determines that the interactive unit has been actuated for second ...

A comparison between microprocessor and microcontroller - which focus on the difference between both. This article will teach you Microprocessor vs Microcontroller.

Calculate the percentage of nitrogen and oxygen in ammonium nitrate. [Relative molecular mass of ami nium nitrate is 80, H = 1, N = 14, O = 16). (b) A bag of fertiliser contains 14.52 kg of ammonium nitrate (NH4NO3). singhamanpratap0249 singhamanpratap0249 Answer: total mass is (14+4+14+3×16). The percent composition is used to describe the percentage of each element in a compound. ›› Ammonium Nitrate molecular weight. Mass percentage of oxygen in Ammonium nitrate = Number of oxygen atoms in NH4NO3 times their mass/ Molecular mass of NH4NO3*100% = (16*3/80)*100% = … The mass and atomic fraction is the ratio of one elements mass or atom to the total mass or atom of the mixture. The percent composition can be found by dividing the mass of each component by total mass. Convert grams Ammonium Nitrate to moles or moles Ammonium Nitrate to grams. 80. there is 2molecule of nitogen then the mass of N is 28. Molecular weight calculation: 14.0067 + 1.00794*4 + 14.0067 + 15.9994*3 ›› Percent ...

Researchers at Universitat Autonoma de Barcelona have developed an electronic tongue which can identify different types of cava wines, thanks to a combination of sensor systems and advanced mathematical procedures. The device ...

Two different azo molecules functionalized graphene oxide (GO) through an ester linkage have been synthesized for the first time. Chemical structure of the azo-GO hybrids was confirmed by Fourier transform infrared spectroscopy and UV-visible spectroscopy. The GO functionalized with 5-((4-methoxyphenyl)azo)-salicylaldehyde was further characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). The SEM studies demonstrated that the morphology of the azo-GO hybrid was found to be similar to the GO sheets but slightly more wrinkled. Further, TEM image of azo-GO indicates some dark spots on the GO sheets due to azo functionalization. AFM results also reveal that the azo functionalization increases the thickness of GO sheet to 4-5 nm from 1.2-1.8 nm. Both the azo-hybrids show absorption band around 379 nm due to the $π$-$π$* transition of the trans azo units. Photoluminescence spectra of azo-GO hybrids show a strong ...

Coordination of uranyl (U(VI)) with carboxylate groups on functionalized graphene oxide (GO) surfaces has been shown to alter the reduction potential of the sorbed uranium ion. A quantitative measure of the reduction potential and qualitative estimation of sorption/desorption processes was determined using c

Silicon-Interface Scattering in Carbon Nanotube Transistors. Slava V. Rotkin. Physics Department & Center for Advanced Materials and Nanotechnology Lehigh University. Acknowledgements. Dr. A.G. Petrov (Ioffe) Prof. J.A. Rogers (UIUC) Dr. V. Perebeinos and Dr. Ph. Avouris (IBM) Slideshow 4029954 by preston

Phys Rev B 2009, 79:205211.CrossRef 3. Kumar M, Singh Selleck Roscovitine VN, Mehta BR, Singh JP: Tunable synthesis of indium oxide octahedra, nanowires and tubular nanoarrow structures under oxidizing and reducing ambients. Nanotechnology 2009, 20:235608.CrossRef 4. Han SY, Herman GS, Chang CH: Low-temperature, high-performance, solution-processed indium oxide thin-film transistors. J Am Chem Soc 2011, 133:5166-5169.CrossRef 5. Elouali S, Bloor LG, Binions. R, Parkin IP, Carmalt CJ, Darr JA: Gas sensing with nano-indium oxides (In 2 O 3 ) prepared via continuous hydrothermal flow synthesis. Langmuir 2012, 28:1879-1885.CrossRef 6. Lee D, Ondrake J, Cui T: A conductometric indium oxide semiconducting nanoparticle enzymatic biosensor array. Sensors 2011, 11:9300-9312.CrossRef 7. Reyes-Gil KR, Reyes-Garcia EA, Raftery D: Nitrogen-doped In 2 O 3 thin film electrodes for photocatalytic water splitting. J Phys Chem C 2007, 111:14579-14588.CrossRef 8. Gan J, Lu X, Wu J, Xie S, Zhai T, Yu M, Zhang Z, ...

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The Food Safety Authority of Ireland (FSAI) has announced that a batch of Girolomoni Organic Penne Rigata Whole Emmer Wheat Pasta is being recalled because of the detection of of an elevated level of the mycotoxin ochratoxin A.. The recalled pasta was sold in 500g packs labelled with a best before date of 25/06/16. The product was manufactured in Italy and imported into Ireland. Recall notices are being displayed in shops supplied with the product and consumers are being advised not to eat the recalled pasta.. More information about the recall can be found on the FSAI website here and more information about ochratoxin A can be found on Food Safety Watch in our ochratoxin factsheet.. ...

This Datasheet describes about MB9B400A Series, Which are a highly integrated 32-bit microcontroller that target for high-performance and cost-sensitive embedded control applications. The MB9B400A Series are based on the ARM® Cortex®-M3 Processor and on-chip Flash memory and SRAM, and peripheral functions, including Motor Control Timers, ADCs and Communication Interfaces (CAN, UART, CSIO, I2C, LIN).

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Electroanalytical methods are a class of facility in analytical chemistry, which study an analyte by calibrating the potential (volts) and/or power (amperes) in an electrochemical cell containing the analyte. The three main divisions are potentiometry (the difference in electrode potentials is calibrated), coulometry (the cells current is measured over time), and voltammetry (the cells current is measured while strongly altering the cells potential). A sensor is equipment that detects and reacts to some type of input from the physical environment. A biosensor is an analytical apparature, used for the exposure of an analyte that combines a biological compound with a physicochemical detector. The sensitive biological components e.g. tissue, microorganisms, organelles, cell receptors, enzymes, antibodies, nucleic acids, etc. is a biologically borrowed material or biomimetic component that interacts binds or recognizes) with the analyte under study. The conductometric transducer is a miniature ...

A hybrid haptic feedback system in which a host computer and haptic feedback device share processing loads to various degrees in the output of haptic sensations, and features for efficient output of haptic sensations in such a system. A haptic feedback interface device in communication with a host computer includes a device microcontroller outputting force values to the actuator to control output forces. In various embodiments, the microcontroller can determine force values for one type of force effect while receiving force values computed by the host computer for a different type of force effect. For example, the microcontroller can determine closed loop effect values and receive computed open loop effect values from the host; or the microcontroller can determine high frequency open loop effect values and receive low frequency open loop effect values from the host. Various features allow the host to efficiently stream computed force values to the device.

A serial interface for facilitating communication between an outside computer and a microcontroller located on a printed circuit board enables the computer to read the contents of a RAM location or write to any RAM location in the microcontroller. The methodology used in association with this invention is preferably utilized across a two-wire asynchronous bus where one of the lines is dedicated to transmissions from the microcontroller and the other line is dedicated to transmissions from the computer to the microcontroller.

The invention provides an inexpensive and electrically isolated remote monitoring apparatus for monitoring the operational status of any oxygen concentrator by specifically monitoring the standard set of high and low pressure diagnostic light emitting diodes provided with most concentrators. Flexible boots enclose the respective optodetectors and are forceably pushed over the diagnostic diodes of the oxygen concentrator so that any light emitted by either diode is detected by the respective optodetector. The optodetectors are further connected to a microcontroller. A telephone line interface port connects to the microcontroller and provides for a telephonic communication link between the microcontroller and a remote computer. When a malfunction is detected and analyzed by the microcontroller, both the type of malfunction and a location code is transmitted to the remote computer.

Renesas Electronics America Inc. announced today for its RL78 microcontroller family new compiler support from IAR Systems, real-time operating systems (RTOS) from Micrium and CMX Systems, and Wi-Fi® (802.11n) support from Redpine Signals, Inc.

Although there are starch based flocculants available, it is the various polyacrylamide compounds that are most commonly used in the mining and petroleum industries. It is primarily used as a method for enhancing the sedimentation of solids in the water treatment processes as well as a mobility control agent in enhanced oil recovery processes. It is most commonly the non-ionic and anionic polyacrylamide compounds which are used in these industries. The charge density of the polyacrylamide will have an effect on its efficacy in these given implementations. There are a number of methods which are traditionally used to determine the carboxylate content of the polyacrylamide. They are conductometric and potentiometric titrations as well as infrared spectroscopy. However, the titration methods are time consuming and the infrared spectroscopy is limited by poorly resolved spectra of carboxylate carbonyl and the amide carboxyl adsorption peaks.. W.M Leung, D.E. Axelson and D. Syme have proposed ...

Two questions: what reaction forms between ammonium nitrate, black iron oxide, and sucrose; and a story related question.. So heres the whole story:. So I was playing around a few months ago and stumbled upon a mixture that generated something similar to Black Snakes (firework). I recently decided to demo this mixture to someone, but I could not find my notes about the experiment, so I decided to try to replicate the mixture from what I remembered.. I am certain that the mixture contained ammonium nitrate, black iron oxide, and some sort of fuel (probably sucrose, impure in the form of powdered sugar). Combining these three ingredients (one part by volume, whatever particle sizes I have), and igniting with a lighter, the mixture does form black snaking ash, and turns red and crumbles as it cools.. Q1: So, what kind of reaction has taken place between the black iron oxide, ammonium nitrate, and sucrose?. If I leave out any one of the ingredients, the ash snake does not form, so all three ...

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Several spectroscopic methods based on mid-infrared quantum cascade lasers for the ultrasensitive detection of nitric oxide have been developed with detection limit in ppbv and sub-ppbv range. We...

San Corporation is a professional manufacturer and supplier of Ammonium Nitrate, PPAN and CPAN in Qingdao, China. - How to Make Ammonium Nitrate?

Mycotoxins are a diverse group of compounds comprised of hundreds of secondary metabolic products from various fungal species. Sigma-Aldrich offers a wide range of products for mycotoxin detection programs across the food supply chain.

SKF sensorized traction motor bearing units combine our sealed, pre-lubricated bearing unit expertise with SKF speed and temperature sensor equipment. The result? A design that incorporates all bearing features and the option for integrated electrical insulation and full-featured sensor technology in a ready-to-mount unit ...

With the growth of smart sensors being part of everyones everyday life, data driven applications are acquiring more and more relevance in the electronics consumer market. Smartwatches for fitness tracking, camera for security and multimedia entertaining as well as biomedical devices as ECG and EEG wearable devices for health care applications are just few of these examples. Typically, the data streams coming from sensors are processed on servers in the cloud. This requires the data to be sensed by a physical device driven by a microcontroller, possibly pre-processed and eventually sent to the network wirelessly (as using Bluetooth low power WiFi radios) where the packet goes through router and switches until it finally arrives to the server in the cloud which will process it and possibly give feedbacks to the users or to the microcontroller for closed-loop applications. As these smart-sensors are usually battery-powered, they are designed to be energy efficient. Most of the power is spent in ...

Im only loosely involved in 802.15.4 projects for now, and not actively following the latest developments and standards. Having said that, a friend of mine has gotten involved in creating small, wireless modules called RadioBlocks.. They use an IEEE 802.15.4 radio combined with a small ARM Cortex-M0 microcontroller. They use an open-source mesh networking software we created called SimpleMesh, so most of my recent work on 802.15.4 has been around this project. The mesh software is designed to do the basic job of sending a block of data to another node, and otherwise staying out of the way. I previously did a lot of work using IPv6 on such small sensor networks, but havent been active in that area lately.. At Dalhousie, Im working on the area of side-channel analysis of cryptographic systems, specifically power analysis. This area has a simple idea: if you have a microcontroller or other embedded controller, it typically has some internal data bus. When those data lines switch state, it takes ...

Part Number: MSP430F2617 Hello, I understand how to apply the calibration data to a reading. My question is, does the calibration cancel all or just a portion

An actuating mechanism for a door includes a first antenna block having a first integrated microcontroller electrically connected to a first transceiver device and a first antenna. A second antenna block having a second integrated microcontroller is electrically connected to a second transceiver device and a second antenna. A processor device is electrically connected between the first and second microcontrollers and a first switch. The first and second antennas receive a first radio frequency signal from a third, mobile transceiver device. The processor device measures a time difference of arrival (TDOA) of the first radio frequency signal. The processor device computes a direction of arrival (DOA). The DOA measurement is compared against a predefined range of DOAs. The processor device sends a control signal to the first switch to actuate the door in the event of a match.

Textbooks and Solutions Manual. Find interactive solution manuals to the most popular college math, physics, science, and engineering textbooks. No printed PDFs!

Robert] wanted more out of his GE Color Effects G-35 LED Christmas lights. He reverse engineered and then hacked the protocol the lights use to communicate so that he can control each bulb. A 26-bit frame contains a 6-bit address, an 8-bit brightness value, and a 12-bit color value. The daisy chain topology of the data bus allows for modular bulbs with addresses enumerated during the startup of the string of lights. With this information, a 5 volt capable microcontroller is able to control a whole string of these lights with a refresh rate of up to 24Hz. In this case, [Robert] used an ATtiny13A microcontroller to control the string of lights. You can see a video of them in action after the break.. Also taken apart and analyzed, were the wireless transmitter and receiver that came with the lights, revealing a cheap ISM band receiver and transmitter module pair. Perhaps they will be useful for another project. We look forward to seeing people put these hacked lights to use throughout the ...

When it comes to energy consumption comparisons of MCU/SoC systems, is one benchmark enough or do we need a parametric benchmark?

STMicroelectronics continues to make the STM32 family of richly featured and energy-efficient microcontrollers more easily accessible for designers

Abstract: A novel ultrasonic technique (sampled cw method) is used to probe into the viscosity of vortex systems in untwinned and twinned YBCO single crystals. Motion of the flux lines in the superconducting sample is induced via coupling with the moving ionic lattice in the bulk of the sample. Hence, the observed dissipation has its origin in the (induced) motion of the vortices with respect to the ionic background of conduction charge carriers. In the experiments which were performed, pronounced field-dependent attenuation changes were observed which are indicative of transitions from a soft vortex system at low fields to a rigid vortex system at high fields. [Research supported by Office of Naval Research and C. Hucho was supported by Deutsche Forschungsgemeinschaft.] [sup ...

Maple, M., Butch, N., Frederick, N., Ho, P., Jeffries, J., Sayles, T., ... Pietraszko, A. (2006). Field-dependent ordered phases and Kondo phenomena in the filled skutterudite compound PrOs4As12. Proceedings of the National Academy of Sciences of the United States of America. 103(18), 6783-9 ...

Devine, J.R.; Holmes, M.R.J., 1963: Field experiments comparing ammonium nitrate, ammonium sulphate and urea applied repetitively to grassland

Im in grade 8 and have question about the rate of deccomposision of a human. what im asking is will an endothermic reaction in a human body slow down the rate of deccomposision, ive done my own experiments and came up with these results the cooler the human body is the slower the rate of deccomposision is! in my experiment i used Ammonium Nitate and water to create the endothermic reaction! i injected the ammonium nitrate and water mixture into raw meat and a pig carcus to serve as a more realistic human analog! so im tryin to comfirm my conclusion or to see if there are any more variable i should try to control? Thanks Brandon ...

Ammonium nitrate is one of the important inorganic salts in chemistry which is made up of two nitrogen atoms, three oxygen atoms and four hydrogen atoms. Therefore its formula is derived from this configuration.

Procurement Resource provides latest prices of Ammonium Nitrate. Each price database is tied to a user-friendly graphing tool dating back to 2014, which provides a range of functionalities: configuration of price series over user defined time period; comparison of product movements across countries; customisation of price currencies and unit; extraction of price data as excel files to be used offline.

Dont Blow It. If these two components are mixed, they will react and form ammonium nitrate. A ball mill can most accurately be described as a piece of equipment that .... ...

THIS PROPOSAL ENVISIONS DETERMINING THE FEASIBILITY OF USING PHOTOFABRICATION TECHNOLOGY TO PRODUCE LOW COST ATMOSPHERIC CORROSION SENSORS. UNLIKE CONVENTIONAL ATMOSPHERIC CORROSION SENSORS WHICH MEAS ... ...

As a reactive oxygen species (ROS), peroxynitrite (ONOO−) generated by nitric oxide (NO) and superoxide anion (O2˙−) plays important roles in physiological and pathological processes in the brain. However, the lack of reliable and durable analytical methods in vivo is still a bottleneck to understanding the

In this study we present a novel silver complex of hyaluronan-lipoate (SHLS12) in a gel-state form. NMR analysis, conductometry and elemental analysis demonstrated stable non-covalent interactions between silver ions and the polysaccharide-lipoate backbone, whereas rheological investigations confirmed its gel-like physical-chemical behavior. Biological studies showed the ability of SHLS12 to exert a straightforward activity against different bacterial strains grown in sessile/planktonic state. The biocompatibility was also proved toward two eukaryotic cell lines. By considering both its ability to preserve antibacterial properties when exposed to the serum protein BSA and its low susceptibility to be degraded by hyaluronidase enzyme, this novel complex may be considered as a promising biomaterial for future in vivo applications.. ...

Imagine a force F acting on some object at a distance r from its axis of rotation. We can break up the force into tangential (Ftan), radial (Frad) (see Figure 1). (This is assuming a two-dimensional scenario. For three dimensions -- a more realistic, but also more complicated situation -- we have three components of force: the tangential component Ftan, the radial component Frad and the z-component Fz. All components of force are mutually perpendicular, or normal.) From Newtons Second Law, Ftan = m atan However, we know that angular acceleration ...

NEC developed the technology to build high-performance carbon nanotube transistors using the ink-jet printing technology. The technology makes it possible to create more elaborate circuits than the conventional printing technology for higher performance of a transistor. A carbon nanotube transistor is applicable to a thin and bendable display should it be printed on a plastic substrate. The company improved the refinement method of nanotube and increased the purity of nanotube contained in the ink. Besides, it devised the composition of the ink to prevent the exhaust nozzle of a printer from getting clogged even if high concentration ink is used. In the experiment, the technology successfully created a circuit with lines of about 70 micrometers wide. The width of a line that the current technology can print is about several hundreds of micrometers. NEC plans to put the newly-developed technology into practical use in five years. ...

That is, theyre looking for an electronics material that both conducts electricity better and allows for smaller transistors. One key material being researched for that purpose is carbon, in the form of carbon nanotubes. Carbon nanotubes are molecules of carbon that are structured as cylinders on the nanoscale. For the past few years, researchers have been using carbon nanotubes to make transistors instead of silicon. Now a team at USC has created a carbon nanotube transistor that has an extrinsic frequency (which defines its practical performance limit) of 25 GHz - 40% faster than the current record holder, which operates at 15 GHz. That makes the teams nanotube transistor the fastest in the world. ...

This work presents a lab-made automated flow-batch system for headspace single-drop microextraction and on-drop conductometric sensing ammonium. Sample and NaOH answer are concurrently pumped right into a response chamber (RC), the place ammonium is transformed to ammonia by elevating pH. The transformed ammonia then diffuses into the headspace of the RC, and reacts with a 100 mM boric acid drop. The conductivity of the drop is measured by an on-drop conductivity probe, which is made by two stainless-steel contacting electrodes. The end result exhibits that the growing charge of conductivity has a linear relationship to the ammonium focus in pattern (R2 = 0.9945). This methodology has a linear vary as much as 400 μM, a restrict of detection 2.eight μM, a relative normal deviation of 3.0% (200 μM, n = 10) and carryover coefficient 0.028. Measurements of river waters, lake waters and wastewaters have been demonstrated. The recoveries have achieved from 99.Zero to 114%. This methodology avoids ...

This work presents a lab-made automated flow-batch system for headspace single-drop microextraction and on-drop conductometric sensing ammonium. Sample and NaOH answer are concurrently pumped right into a response chamber (RC), the place ammonium is transformed to ammonia by elevating pH. The transformed ammonia then diffuses into the headspace of the RC, and reacts with a 100 mM boric acid drop. The conductivity of the drop is measured by an on-drop conductivity probe, which is made by two stainless-steel contacting electrodes. The end result exhibits that the growing charge of conductivity has a linear relationship to the ammonium focus in pattern (R2 = 0.9945). This methodology has a linear vary as much as 400 μM, a restrict of detection 2.eight μM, a relative normal deviation of 3.0% (200 μM, n = 10) and carryover coefficient 0.028. Measurements of river waters, lake waters and wastewaters have been demonstrated. The recoveries have achieved from 99.Zero to 114%. This methodology avoids ...

The response of magnetic nanoparticles (MNPs) to an oscillating magnetic field outside the linear response region is important for several applications including magnetic hyperthermia, magnetic resonance imaging and biodetection. The size and magnetic moment are two critical parameters for the performance of a colloidal MNP dispersion. We present and demonstrate the use of optomagnetic (OM) and AC susceptibility (ACS) measurements vs. frequency and magnetic field strength to obtain the size and magnetic moment distributions including the correlation between the distributions. The correlation between the size and the magnetic moment contains information on the morphology and intrinsic structure of the particle. In OM measurements, the variation of the second harmonic light transmission through a dispersion of MNPs is measured in response to an oscillating magnetic field. We solve the Fokker-Planck equations for MNPs with a permanent magnetic moment, and develop analytical approximations to the ACS and

Synergism effect between hydrochlorothiazide and propranololin patients is indicated in the management of hypertension.4,5 This fixed combination is not indicated for initial therapy of hypertension. Hypertension requires therapy dosage rationalized to the individual patient. If the fixed combination represents the dosage determined, its use may be more convenient in patient management. Being widely used drugs, several methods have been reported for their determination in pharmaceutical formulations. Hydrochlorothiazide has been determined by liquid chromatography/tandem mass spectrometry,6,7 High performance liquid chromatography, HPLC, and time resolved chemiluminescence.8,9 In the case of propranolol, several methods have been proposed for determination of propranolol using atomic absorption spectrometric,10spectrofluorimetry,11 conductometric titration and chromatography.12-16. To our knowledge, there is not a proposed method for simultaneous determination of hydrochlorothiazide and ...

Cellulose from wood fibers can be modified for use in flame-retardant composites as an alternative to halogen-based compounds. For this purpose, sulfite dissolving pulp fibers have been chemically modified by phosphorylation, and the resulting material has been used to prepare cellulose nanofibrils (CNF) that have a width of approximately 3 nm. The phosphorylation was achieved using (NH4)2HPO4 in the presence of urea, and the degree of substitution by phosphorus was determined by X-ray photoelectron spectroscopy, conductometric titration, and nuclear magnetic resonance spectroscopy. The presence of phosphate groups in the structure of CNF has been found to noticeably improve the flame retardancy of this material. The nanopaper sheets prepared from phosphorylated CNF showed self-extinguishing properties after consecutive applications of a methane flame for 3 s and did not ignite under a heat flux of 35 kW/m2, as shown by flammability and cone calorimetry measurements, respectively.. ...

A composition of redox-reagent containing metal-containing complex and thionine or its derivative as electron transfer mediator for use in an electrochemical biosensor, and a biosensor containing the same are provided. With the increase in reaction rate between redox enzyme-thionine (or its derivati

if youre dealing with household chemicals anyway, just look in your first aid kit. odds are you should have an instant cold pack, and as long as it dosent say ammonium nitrate free, it should contain a sizable quantity of NH_4NO_3. if you dont have any just go to wal-mart and be sure that the package does not say ammonium nitrate free or it will not contain any ammonium nitrate. this is by far the easiest method as you will not have to deal with complex and sometimes dangerous chemical reactions.. Select as Best AnswerUndo Best Answer ...

One of their objectives is to provide their customers with high quality seasonings. To develop new seasoning more rapidly than just traditional evaluation systems, they have been working with the FOX Electronic Nose since 1997 and the ASTREE Electronic Tongue since 2001. The electronic nose and tongue have been used for R&D purposes for product development as well as for monitoring the batch to batch consistency of their products. These achievements were highlighted by two presentations about the rancidity evaluation using an electronic nose and on product development combining sensory techniques (5th International Symposium on Olfaction and Electronic Nose in Baltimore, USA). The Electronic Nose is now an established technique alongside their more traditional evaluation systems by humans, GC-MS and MS-PAK. Kyowa Hakko are using their R&D results as part of their Food Ingredients Catalogs. ...

Magnetically suspended control moment gyro(MSCMG) is the primary attitude actuator of large spacecraft,and the MSCMG gimbal servo system control precision is one of the main factors which affect gyroscopic torque accuracy.In order to enhance the MSCMG gimbal servo system disturbance suppression ability and control precision,a disturbance observer based on angular acceleration for MSCMG gimbal servo system was proposed.Using angle,Kalman filter estimates the velocity,which was sent to the state observer to acquire the precise angular acceleration.Angular acceleration and current were used as inputs of disturbance observer to obtain compensatory current.Then the compensatory current was sent to the input of current loop to compensate various disturbances.The disturbance observer has characteristics of simple structure and good disturbance suppression ability.The experimental result shows that this method can effectively improve the velocity precision and stability of the MSCMG gimbal servo system.

Carbon nanotubes may take over from silicon as processors get smaller and more energy-efficient, and IBM has just announced a fresh breakthrough in making the technology viable.

In January 2012, the Joint IED Defeat Organization (JIEDDO), a counter-IED task force within the Pentagon, put out a request for ways to neutralize ammonium nitrates effectiveness in explosives. In March, Fleming submitted his proposal: Add iron sulfate. Its a common enough substance. Iron sulfate is a waste product at steel foundries, for example, which produce 4 to 6 tons of the stuff for every ton of titanium. Iron sulfate is already used as a soil conditioner in the more desert like areas of the American West, where the ground tends toward the overly alkaline. If anything, Fleming says, Afghan farmers should benefit from the additive.. The real reason to do it, though, is this: To unlock the destructive chemical potential of ammonium nitrate, bomb-makers have to process it. (Fleming has asked us not to specify how; suffice it to say, its a low-tech procedure.) And if iron sulfate is present when the would-be bombers try to do this chemistry, it sets off an irreversible reaction. The ...

The ammonium nitrate in this proposal would be used in explosives manufacture, but is not itself explosive. The specificition for this product is similar to that of NITRAM, and is a prilled, high density 99.5% purity material. The logistics of the transport operations will determine whether the ammonium nitrate is immediately transhipped by road or rail to Kalgoorlie and how much remains in interim storage.. ...

OSHA has a new video on inspections under its ammonium nitrate emphasis program. Even if your site does not store ammonium nitrate, the 10-minute video gives a good overview of an OSHA enforcement inspection. If your site has team members who have not participated in an OSHA enforcement inspection before, this video could be a good tool to review OSHA enforcement inspection procedures during an upcoming safety meeting. https://www.youtube.com/watch?v=a_6jx2Nwm68&feature=youtu.be

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worldnow id=8848977 width=420 height=278 type=video]. WEST (CBS 11 NEWS) - Investigators have now ruled what many have suspected: the ammonium nitrate stored at the West Fertilizer Companys plant exploded.. But the 29 state and federal agencies involved in the probe still dont know what triggered the blast, and the fire that began at the facility before that.. On Monday, the state announced the fire began in the fertilizer and seed building, but that investigators ruled out that the blaze began in the bin holding the ammonium nitrate.. ...

Dear Sirs, There are the Porous Prill Ammonium nitrate(PPAN) and Crystallized Prill Ammonium nitrate (CPAN) in Vietnam with the specifications as follows: */ S...

One of the advantages of the gaphene oxide is its easy dispersability in water and other organic solvents, as well as in different matrixes, due to the presence of the oxygen functionalities. This remains as a very important property when mixing the material with ceramic or polymer matrixes when trying to improve their electrical and mechanical properties.. On the other hand, in terms of electrical conductivity, graphene oxide is often described as an electrical insulator, due to the disruption of its sp2 bonding networks. In order to recover the honeycomb hexagonal lattice, and with it the electrical conductivity, the reduction of the graphene oxide has to be achieved. It has to be taken into account that once most of the oxygen groups are removed, the reduced graphene oxide obtained is more difficult to disperse due to its tendency to create aggregates.. Functionalization of graphene oxide can fundamentally change graphene oxides properties. The resulting chemically modified graphenes could ...

CROSS. The present application is a Continuation-in-Part of U.S. application Ser. No. 09/620,191, filed Jul. 20, 2000, which has issued as U.S. Pat. No. 6,488,828 on Dec. 3, 2002.. FIELD OF THE INVENTION. The present invention relates to a biosensor for use in determining the concentration of an analyte in a sample.. BACKGROUND AND SUMMARY OF THE INVENTION. Electrochemical biosensors are known. They have been used to determine the concentration of various analytes from biological samples, particularly from blood. Biosensors are described in U.S. Pat. Nos. 5,288,636; 5,413,690; 5,762,770; 5,798,031; and 5,997,817, the disclosure of each of which are hereby incorporated by reference. Storage containers for test strips are also known. See U.S. Pat. Nos. 5,788,064 and 5,985,675.. According to the present invention, a recloseable biosensor is provided that comprises a substrate formed to include a sample site, a cover including first and second ends and a middle portion between the ends, the first ...

Biosensors are devices that use biological components to detect important analytes. Biosensing systems have various applications in areas such as medicine, environmental monitoring, and process control. Classical biosensors are often based on bacteria or purified enzymes that have limitations on efficiency or stability. I have developed several new biosensors to overcome these disadvantages. Two preliminary biosensors were first created based on the extremely strong and specific interaction between biotin and (strept)avidin. Both biosensors showed high sensitivity and reliability for measuring biotin with detection limits of 50-1000 pg/ml and 20-100 ng/ml, respectively. Following these, a new biosensor was developed by coupling a mobile, functionalized microsurface with cell-free expression approaches. This biosensor demonstrated a dynamic range of 1- 100 ng/ml. In addition, I also explored the possibility of combining these biosensing systems with engineered living cells. By leveraging the ...

Devices in the S6E2C1 Series are highly integrated 32-bit microcontrollers with high performance and competitive cost. This series is based on the ARM Cortex-M4F processor with on-chip flash memory and SRAM. The series has peripherals such as motor control timers, A/D converters, and communications interfaces (USB, CAN, UART, CSIO (SPI), I2C, LIN).

Embedded control of process plants is the state-of-the art development gaining importance by research community. Field Programmable Gate Array (FPGA) is a versatile tool for implementing embedded controller. In this paper the process of interfacing the Shell and Tube Heat Exchanger (STHE) with Compact Reconfigurable Input Output (CRIO) based FPGA through VDPID03DAQ card has been presented. The STHE VTPA-H-353 is a versatile and reliable computer based temperature process having microcontroller based data acquisition hardware unit. The DAQ card used for data acquisition consists of analog to digital converter, digital to analog converter and a microcontroller on a single board. A graphical program has been developed for the real time data acquisition using CRIO based FPGA. CRIO-9012 was interfaced with RS232 to the data acquisition card of STHE process plant. FPGA acts as a standalone processor instead of the PC for controlling the process plant.. ...

Where Ham Radio Meets Open-Source Electronics. Microcontroller technology has exploded in popularity among ham radio operators. The new generation of single-board microcontrollers is easier than ever to use, bringing together hardware and software for project-building radio amateurs can easily dive into. With inexpensive microcontroller platforms such as the popular open-source Arduino board readily available parts, components and accessory boards, the possibilities are limitless: beacon transmitters, keyers, antenna position control, RTTY and digital mode decoders, waterfall displays, and more.. Editor Leigh L. Klotz, Jr, WA5ZNU has assembled this first edition of Ham Radio for Arduino and PICAXE to help introduce you to the fun and rewards of experimenting with microcontrollers. Klotz and many other contributors have designed projects that will enhance your ham radio station and operating capabilities. Or, take it to the next step, using these projects as a launch pad for creating your own ...

Lauderdale, 711: Meridian, 725: Sioux Falls(Mitchell), 754: Butte-Bozeman, 603: Joplin-Pittsburg, 661: San Angelo, 600: Corpus Christi, 503: Macon, 557: Knoxville, 658: Green Bay-Appleton, 687: Minot-Bsmrck-Dcknsn(Wlstn), 642: Lafayette, LA, 790: Albuquerque-Santa Fe, 506: Boston( Manchester), 565: Elmira( Corning), 561: Jacksonville, 571: afford Island-Moline, 705: Wausau-Rhinelander, 613: Minneapolis-St. Salem, 649: Evansville, 509: do Wayne, 553: Marquette, 702: La Crosse-Eau Claire, 751: Denver, 807: San Francisco-Oak-San Jose, 538: Rochester, NY, 698: Montgomery-Selma, 541: Lexington, 527: Indianapolis, 756: Corrections, 722: Lincoln & Hastings-Krny, 692: Beaumont-Port Arthur, 802: Eureka, 820: Portland, OR, 819: Seattle-Tacoma, 501: New York, 555: Syracuse, 531: Tri-Cities, TN-VA, 656: Panama City, 539: Tampa-St. Crk, 616: Kansas ...

In this project, the energy value keeps a server and each user are supplied an energy meter. This energy meter includes an ARM7 microcontroller, LCD display, GSM module, potential transformers, current transformers and a relay. The Microcontroller estimates the consumption of an energy by counting the o/p of current & potential transformers on the basis of an interrupt. Then the household meter obtains the equivalent unit and is triggered.. As the consumer uses energy, the equivalent units are removed from the whole balance and the residual units are displayed using the LCD. After the utilization of the owed energy, the energy meter automatically detaches the load from the main power line using the relay until the consumer recharges again. Thus the system avoids the irregularities connected with the traditional billing system and guarantee revenue collection.. Thus, this is all about controlling of electricity theft, using smart prepaid energy meter. Furthermore, any queries regarding this ...

The search for new quantum states of matter has been one of the forefront endeavors of condensed matter physics. ~The two-dimensional Kitaev quantum spin liquid (QSL) is of special interest as an exactly solvable spin-liquid model exhibiting exotic fractionalized excitations. Recently, alpha-RuCl3 has been identified as a candidate system for exhibiting some aspects of Kitaev QSL physics.~ ~The spins in this material exhibit zig-zag order at low temperatures, and show both low energy spin wave excitation arising from the ordered state as well as a continuum excitation extending to higher energies that has been taken as evidence for QSL relate Majorana fermions.~ ~In this talk, we show that the application of an in-plane magnetic field suppresses the zig-zag order possibly resulting in a state devoid of long-range order. Field-dependent inelastic neutron scattering on single-crystal shows a remarkable effect on the excitation spectrum above the critical field ...

Pasquardini, L., Berneschi, S., Barucci, A., Cosi, F., Dallapiccola, R., Insinna, M., Lunelli, L., Conti, G. N., Pederzolli, C., Salvadori, S. and Soria, S. (2013), Whispering gallery mode aptasensors for detection of blood proteins. J. Biophoton., 6: 178-187. doi: 10.1002/jbio.201200013 ...

The emergence of biosensor has triggered a revolution in many fields.It is an analytical device that uses biological or biochemical reactions to detect analytes and mainly consists of biological component and sensor.The

Neural Networks for an Analysis of the Hemometabolites Biosensor Response: 10.4018/ijehmc.2013100106: In this work, the concentration dependent response of amperometric biosensor array for the biomarkers glucose, cholesterol and urease was explored, using

In 2019, Export of Double Salts and Mixtures of Calcium Nitrate and Ammonium Nitrate from Egypt was 924549 US Dollars. Discover more data with NationMaster!

Ammonium Nitrate (AN) market research report - global and country capacity, production, consumption, prices, trade, forecast, manufacturers, upstream and downstream markets

We produce and source around one million tons of Ammonium Nitrate for our North America explosives and fertilizer business. Browse the website for more details.

Synthesis of Graphene Oxide GO by Modified Hummers Method and Its Thermal Reduction to Obtain Reduced Graphene Oxide rGO*. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.

ive been trying to do this question all summer to no joy. ive got a flywheel in motion which then has a torque applied for short period and i need to find the angular acceleration. i know its something to do with inertia but im completely lost cheers ...

The elements of the data logger include an acceleration sensor, a GPS module, a micro-controller, an SD card and a WiFi interface. The sensor measures the freight trains acceleration along three axes. At the same time, the GPS module determines the vehicles position and stores the data along with the acceleration values on the SD card. These parameters can be used to pinpoint the trains speed and the amount of energy available to it. That way, we can fine-tune the energy converter and tailor it to the application involved, the researcher adds.. The data logger is already in use in freight cars, trucks and machinery. Spies and his team are currently working to develop a complete tracking system that includes not only a GSM module and a GPS receiver but also a vibration converter that turns mechanical energy into electrical energy. The researchers are showcasing a prototype of the IIS data logger at the Sensor+Test 2012 trade fair, May 22-24 in Nuremberg, in Hall 12, Booth 202.. ...

A black box for cars is a video recording device with an acceleration sensor and a GPS receiver module. It can record any situation happening in front of a vehicle and store the information in the form of digital images into a built-in memory card. A vehicles black box is not a newly developed technology, but an application of existing video-recording technologies for the purpose of increasing road safety. This simple technology also has played a crucial role in solving or clarifying causes related to traffic crashes. Above all, the black box for vehicles has resulted in a decrease of traffic crashes, thus saving lives ...

New research proposes the use of electronic tongues for detecting bladder cancer in its early stages. The device is cheap, noninvasive, and easy to use....

This semiconductor gas sensor detects the presence of alcohol gas at concentrations from 0.04 mg/L to 4 mg/L, a range suitable for making a breathalyser. The sensors simple analog voltage interface requires only one analog input pin from your microcontroller.

We study memory devices consisting of singlewalled carbon nanotube transistors with charge storage at the SiO2/nanotube interface. We show that this type of memory device is robust, withstanding over 10 operating cycles, with a current drive capability up to 10 A at 20 mV drain bias, thus competing with state-of-the-art Si-devices. We find that the device performance depends on temperature and pressure, while both endurance and data retention are improved in vacuum.