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Topic: Differential scanning calorimeter

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	Calorimeter Summary
		A calorimeter is a device used for calorimetry, the science of measuring the heat of chemical reactions or physical changes as well as heat capacity.
		Differential scanning calorimetry is a workhorse technique in many fields, particularly in polymer characterization.
		In particle physics, a calorimeter is a component of a detector that measures the energy of entering particles.
	www.bookrags.com /Calorimeter (1422 words)

	Differential scanning calorimetry - Wikipedia, the free encyclopedia
		Differential scanning calorimetry (DSC) is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference are measured as a function of temperature.
		By observing the difference in heat flow between the sample and reference, differential scanning calorimeters are able to measure the amount of energy absorbed or released during such transitions.
		Using DSC, it is possible to observe the small energy changes that occur as matter transitions from a solid to a liquid crystal and from a liquid crystal to an isotropic liquid.
	en.wikipedia.org /wiki/Differential_scanning_calorimeter (1797 words)

	Calorimeter -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-08)
		The word calorimeter is derived from (Unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure) calorie, a unit of (A form of energy that is transferred by a difference in temperature) heat.
		A constant-volume calorimeter is a calorimeter in which the ((chemistry) a process in which one or more substances are changed into others) chemical reaction occurs within a rigid vessel whose volume cannot change.
		Differential scanning calorimetry is a workhorse technique in many fields, particularly in (A naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers) polymer characterization.
	www.absoluteastronomy.com /encyclopedia/c/ca/calorimeter.htm (1005 words)

	Calorimeter - Wikipedia, the free encyclopedia
		A calorimeter is a device used for calorimetry, the science of measuring the heat of chemical reactions or physical changes.
		Differential scanning calorimetry is a workhorse technique in many fields, particularly in polymer characterization.
		In particle physics, a calorimeter is a component of a detector that measures the energy of entering particles.
	en.wikipedia.org /wiki/Calorimeter (836 words)

	Calorimeter (Site not responding. Last check: 2007-10-08)
		This kind of calorimeter is a common component in a high-energy particle physics experimental apparatus.
		Most particles enter the calorimeter and initiate a particle shower, much like a cosmic ray shower, and the particles' energy is deposited in the calorimeter, collected, and measured.
		Typically, calorimeters are segmented transversely to provide information about the direction of the particle or particles, as well as the energy deposited, and longitudinal segmentation can provide information about the identity of the particle based on the shape of the shower as it develops.
	www.usedaudiparts.com /search.php?title=Calorimeter (966 words)

	Differential Scanning Calorimeter
		Differential scanning calorimetry is a thermal analysis technique that detects the temperatures and heat flows caused by changes in heat capacity or by endothermic and exothermic processes of materials as a function of time and temperature.
		The DSC Q100 operates in a temperature range from 93 K to 823 K because it is equipped with a liquid nitrogen cooling system.
		The resulting temperature difference between sample and reference, which is needed to define the differential heat flow, is measured by area thermocouples on the underside of each platform.
	www.uni-oldenburg.de /tchemie/16633.html (463 words)

	Differential Scanning Calorimeter
		The operation of a Differential Scanning Calorimeter (DSC) is based on measurement of the thermal response of an unknown specimen as compared with a standard when the two are heated uniformly at a constant rate.
		The Stanton-Redcroft DSC consists of a furnace containing two identical crucibles, each of which rests on a thin plate located inside the measurement head.
		The DSC is used to measure specific heat capacity (100 to 1200
	www.ms.ornl.gov /htmlhome/tpuc/dsc.html (255 words)

	Effect of Polyols on the Conformational Stability and Biological Activity of a Model Protein Lysozyme
		Differential scanning calorimeter (DSC) was used to measure the thermodynamic parameters, mid point transition temperature and calorimetric enthalpy, in order to evaluate conformational stability.
		DSC is ideally suited to the study of protein thermal denaturation in solution since it measures the forces stabilizing the conformational structure directly and is therefore model independent.
		Differential scanning calorimetry of thermal unfolding of the methionine repressor protein (MetJ) from Escherichia coli.
	www.aapspharmscitech.org /view.asp?art=pt040342&pdf=yes (3541 words)

	Abstract
		Differential scanning calorimetry (DSC) is a primary technique for measuring the thermal properties of materials.
		Furthermore, traditional DSC systems are limited to taking one measurement at a time, and a new sample must be loaded between each measurement.
		In differential mode, it is necessary to measure the voltage drop across both sensors as well as the differential voltage.
	www.deas.harvard.edu /vlassak_group/Combinatorial_DSC.htm (2558 words)

	SCINCO - FROM THE LEADERS IN ANALYCAL INSTRUMENT SOLUTIONS
		The DSC N-650 Differential Scanning Calorimeter measures heat flow of a sample as a function of temperature or time.
		This temperature differential is proportional to the heat absorbed or given off by the sample during a temperature program.
		The calorimeter is calibrated with reference standard materials and the thermal analysis software applies calibration factors to precisely and accurately determine the temperature range of a sample transition and the enthalpy of the transition.
	www.scinco.com /eng/product/product_info_detail.asp?no=43 (375 words)

	Differential Scanning Calorimetry
		Use a differential scanning calorimeter to determine the heat capacity of a solid.
		DSC data is often plotted as “heat flow” vs. temperature or time.
		This is the DSC you will be using in the lab.
	chem.nicholls.edu /pchem/DSCspht.htm (1016 words)

	CSC - Calorimetry Sciences Corp. - calorimeter - microcalorimeter, nanocalorimer (Site not responding. Last check: 2007-10-08)
		6300 Nano Differential Scanning Calorimeter Serries III (N-DSCIII)
		The CSC Nano II Differential Scanning Calorimeter (Nano II -DSC) is designed specifically for the measurement of absolute heat capacities of biopolymers in dilute solution.
		The Multi-Cell Differential Scanning Calorimeter (MC-DSC) is designed for the study of biopolymer stability in dilute solution and has sufficient sensitivity to study the unfolding of most proteins at concentrations in the 1 mg/ml range.
	www.calscorp.com /Calorimeters.html (624 words)

	NETZSCH Services
		Differential Scanning Calorimetry (DSC) is one of the most frequently used techniques in the field of thermal characterization of solids and liquids.
		Applying this technique, a sample is placed inside a crucible which is then placed inside the measurement cell (furnace) of the DSC system along with a reference pan which is normally empty.
		are the new DSC heat flux sensor and a new furnace.
	www.laserflash.com /dsc200pc.htm (412 words)

	Differential Scanning Calorimetry (Site not responding. Last check: 2007-10-08)
		The differential scanning calorimeter measures the heat absorption of a sample as a function of temperature.
		The two cells are heated with a constant power input to their heaters during a scan.
		The usual practice is to record a reference baseline for the experimental scan; this is subtracted from the experimental data to yield C
	info.bio.cmu.edu /courses/03438/LecS00/DSC.html (761 words)

	Instrument Specialists, Inc \|\| Products - Pressure Differential Scanning Calorimeter (DSC) (Site not responding. Last check: 2007-10-08)
		Pressure DSC is differential scanning calorimetry under either high or low-pressure conditions.
		DSC results are often different for samples analyzed in open versus hermetically sealed pans due to changes in pressure inside sealed pans.
		The heart of the pressure DSC is a heat flux plate designed for to measure small energy changes with reliability versus not just versus temperature but also versus pressure.
	www.instrument-specialists.com /products_pressure-dsc.html (214 words)

	Fusible polyimide and composite polyimide film - Patent 6808818
		A fusible polyimide showing a fusion endothermic peak in a differential scanning calorimeter has a recurring unit of the following formula (1): ##STR1## in which Ar.sup.1 is a mixture of residues of tetracarboxylic dianhydrides composed of 12-25 mol.
		The invention resides in fusible polyimide showing a fusion endothermic peak in a differential scanning calorimeter (DCS), preferably at a temperature of 340-380.degree.
		The invention further resides in a composite polyimide film comprising a polyimide substrate sheet and a fusible polyimide film united to the substrate sheet, in which the fusible polyimide film shows a fusion endothermic peak in a differential scanning calorimeter, preferably at a temperature of 340-380.degree.
	www.freepatentsonline.com /6808818.html (3967 words)

	Instrument Specialists, Inc \|\| Products - Thermal Analyzers - Differential Scanning Calorimeter (DSC) (Site not responding. Last check: 2007-10-08)
		The sensor of the DSC is the heat flux plate which is designed to give superior performance and rugged reliability.
		Examples of measurements with DSC are Melt enthalpy, Glass transition, Heat of Crystallization, Purity Determination and Heat Capacity...
		is differential scanning calorimetry under either high or low-pressure conditions.
	www.instrument-specialists.com /products_thermal-analyzers.html (398 words)

	MicroDifferential Scanning Calorimeter
		Differential scanning calorimetry (DSC) is a technique in which an approximately linear temperature profile is imposed on an isolated system, while a reaction takes place in one part of the system.
		The differential aspect of the measurement allows only small differences to be amplified, eliminating large common-mode signals, and greatly enhancing the sensitivity.
		There are many potential applications for differential scanning calorimetry in the area of biotechnology.
	www.cstl.nist.gov /div836/836.04/SensorProj/Microcal.html (1212 words)

	Binghamton University Physics Dept. (Site not responding. Last check: 2007-10-08)
		The DSC is used to obtain thermodynamic and kinetic data for the different metal alloys being studied by Rich Chromik and others in the lab.
		As the two calorimeters are heated the difference in power needed by the calorimeters to cause the identical temperature change is measured.
		From this DSC scan and others, we determined the heat of reaction to be -4.3 +/-0.3 kJ/mol.
	www.binghamton.edu /physics/cotts/dsc.html (229 words)

	Thermo Mechanical
		Photo- calorimetry and pressure DSC accessories are also available, making the Q1000 the best-equipped analyzer to meet the needs of the most demanding researcher.
		Two Differential Scanning Calorimeters (DSC), the DSC 7 and the Pyris 1, both by Perkin Elmer.
		The differential temperature loop maintains identical temperatures between the reference and sample pans regardless of the different amount of heat needed to enter the sample side.
	www.usm.edu /mrsec/facilities/thermo.htm (1823 words)

	Materials Science (Site not responding. Last check: 2007-10-08)
		A Modulated Differential Scanning Calorimeter, TA Instruments Model 2920, is used to determine the thermal properties of polymers.
		The scan velocity range is from 1.6 to 400 kHz (0.1 to 25.3 cm/sec).
		The scan velocity range is from 1.6 to 100 kHz (0.1 to 6.3 cm/sec).
	www.dt.navy.mil /code60/code645/polymers/facilities.htm (546 words)

	MS&E 403/404 - Differential Scanning Calorimetry Experiment
		Differential Scanning Calorimetry (DSC) is a convenient and highly accurate method for performing thermal analysis on a wide variety of materials.
		This type of DSC includes two heating discs which are in thermal contact with one another and are isolated from the environment.
		If transitions occur at similar temperatures, additional DSC experiments at slower rates may be necessary at this point in order to get more accurate estimates of compositions.
	people.ccmr.cornell.edu /~mseugrad/dsclab.html (1337 words)

	NETZSCH Services
		The high level of flexibility provided by the user-exchangeable furnace systems is further enhanced with interchangeable measuring heads for DTA, DSC and specific heat measurements for different areas of application.
		The unique design of these heads, which includes positive crucible placement and specially-coated radiation shields, permits the quantitative determination of specific heat, transformation enthalpies and temperatures, etc. In addition, a newly developed micrometer adjustment system allows fast, easy and accurate optimization of the baseline after exchange of the measuring head.
		With its robust construction and rotational symmetry, the new DSC sensor, designed especially for specific heat measurements at high temperatures, combines long-term mechanical stability and reduced influence from operational inconsistencies.
	www.laserflash.com /dsc404c.htm (334 words)

	[No title]
		Temperature scans across the dynamic spectrum of mechanical absorptions are commonly required for characterization of polymers, especially for elastomers.
		Bomb or flame calorimeters involve adiabatic systems where the change in temperature can be translated, using the heat capacity of the system, into the enthalpy or energy content of a material such as in determination of the calorie content of food.
		Sometimes the enthalpy of crystallization, which has occurred in the DSC measurement, is subtracted from this value to adjust the enthalpy as an estimate of the enthalpy associated with the original sample.
	www.eng.uc.edu /~gbeaucag/Classes/Analysis/Chapter3.html (4924 words)

	calorimeter on Encyclopedia.com (Site not responding. Last check: 2007-10-08)
		Differential scanning calorimeters sensor provides increased sensitivity.(Product: intruments)
		Research-Grade DSC At a QC Price.(new, cost-effective differential scanning calorimeter from Instrument Specialists Inc.)(Brief Article)(Statistical Data Included)
		Maxine Smith, a clinical dietitian with Akron City Hospital in Akron, Ohio, uses a MedGem Indirect Calorimeter to measure Chris Mettee's resting metabolic rate.
	www.encyclopedia.com /html/X/X-calorimter.asp (203 words)

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