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In DSC, a small sample is heated in a way that generates a very precise change in temperature with respect to time.
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DSC and small
In a differential scanning calorimeter ( DSC ), heat flow into a sample — usually contained in a small aluminium capsule or ' pan '— is measured differentially, i. e., by comparing it to the flow into an empty reference pan.
In a heat flux DSC, both pans sit on a small slab of material with a known ( calibrated ) heat resistance K. The temperature of the calorimeter is raised linearly with time ( scanned ), i. e., the heating rate
A modulated temperature differential scanning calorimeter ( MTDSC ) is a type of DSC in which a small oscillation is imposed upon the otherwise linear heating rate.
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.
DSC and sample
Differential scanning calorimetry or DSC is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature.
Generally, the temperature program for a DSC analysis is designed such that the sample holder temperature increases linearly as a function of time.
DSC measures the energy required to keep both the reference and the sample at the same temperature whereas DTA measures the difference in temperature between the sample and the reference when they are both put under the same heat.
Simultaneous Thermal Analysis ( STA ) generally refers to the simultaneous application of Thermogravimetry ( TGA ) and differential scanning calorimetry ( DSC ) to one and the same sample in a single instrument.
The test conditions are perfectly identical for the TGA and DSC signals ( same atmosphere, gas flow rate, vapor pressure of the sample, heating rate, thermal contact to the sample crucible and sensor, radiation effect, etc .).
DSC and is
A computerized setting circle is called a " digital setting circle " ( DSC ).
DSC is an initialism or abbreviation used in many fields:
An important tool in establishing this is thermal analysis techniques like DSC or DTA and increasingly also, thanks to the advent of synchrotrons temperature-dependent powder diffraction.
An alternative technique, which shares much in common with DSC, is differential thermal analysis ( DTA ).
The result of a DSC experiment is a curve of heat flux versus temperature or versus time.
This transition from amorphous solid to crystalline solid is an exothermic process, and results in a peak in the DSC signal.
DSC is used widely for examining polymeric materials to determine their thermal transitions.
DSC is used in the study of liquid crystals.
DSC is widely used in the pharmaceutical and polymer industries.
For the polymer chemist, DSC is a handy tool for studying curing processes, which allows the fine tuning of polymer properties.
The cross-linking of polymer molecules that occurs in the curing process is exothermic, resulting in a positive peak in the DSC curve that usually appears soon after the glass transition.
DSC, alone or in combination with hot-stage microscopy, is able to differentiate between different polymorphic structures and, by using different heating rates, can investigate the transformations which occur during the polymorphic transformation.
An example is oxidation induction time ( OIT ) by DSC which can determine the amount of oxidation stabiliser present in a thermoplastic ( usually a polyolefin ) polymer material.
DSC is used to determine the curing properties of the resins used in composite materials, and can also confirm whether a resin can be cured and how much heat is evolved during that process.
Nevertheless, at present the term thermal analysis is usually reserved for a narrow range of techniques that measure changes in the physical properties of foods with temperature ( TG / DTG, DTA, DSC and Transition temperature ).
DSC and way
Document Structuring Conventions, or DSC, is a set of standards for PostScript, based on the use of comments, which primarily specifies a way to structure a PostScript file and a way to expose that structure in a machine-readable way.
The addition of structure, with DSC comments exposing that structure, helps provide a way for, e. g., an intelligent print spooler to have the ability to rearrange the pages for printing, or for a page layout program to find the bounding box of a PostScript file used as a graphic image.
Some DSC comments serve a second function, specifying a way to tell the document manager to do certain things, like inserting a font or other PostScript code ( collectively called resources ) into the file.
DSC and very
Digital Selective Calling or DSC is a standard for sending pre-defined digital messages via the medium frequency ( MF ), high frequency ( HF ) and very high frequency ( VHF ) maritime radio systems.
DSC and precise
The second method, Differential Scanning Calorimetry ( DSC ), allows for more precise determination of phase transitions and transition enthalpies.
The term DSC was coined to describe this instrument which measures energy directly and allows precise measurements of heat capacity.
DSC and temperature
Top: A schematic DSC curve of amount of energy input ( y ) required to maintain each temperature ( x ), scanned across a range of temperatures.
Normalized DSC curves using the baseline as the reference ( left ), and fractions of each conformational state ( y ) existing at each temperature ( right ), for two-state ( top ), and three-state ( bottom ) proteins.
Simultaneous TGA-DTA / DSC measures both heat flow and weight changes ( TGA ) in a material as a function of temperature or time in a controlled atmosphere.
DSC and with
The DECT media access control layer also provides encryption services with the DECT Standard Cipher ( DSC ).
Modern calorimeters are frequently supplied with automatic devices to provide a quick read-out of information, one example being the DSC or differential scanning calorimeter.
* June 14 – 15 – A Vickers Vimy piloted by John Alcock DSC with navigator Arthur Whitten Brown makes the first nonstop transatlantic flight, from St. John's, Newfoundland, to Clifden, Connemara, Ireland.
Oil painting by Kenneth King from the National Maritime Museum of IrelandThe first Q-ship victory was on 23 June 1915, when U-40 was sunk off Eyemouth by the submarine HMS C24, cooperating with the decoy vessel Taranaki, commanded by Lieutenant Frederick Henry Taylor CBE DSC RN.
File: Nikon F viewfinder DSC 6506. jpg | A Nikon F body with detached pentaprism viewfinder, showing the focusing screen
In 2004, the Kodak ( Sigma ) DSC Pro SLR / c ( USA / Japan ) digital SLR was loaded with optical performance profiles on 110 lenses so that the on-board computer could correct the lateral chromatic aberration of those lenses, on-the-fly as part of the capture process.
* Transmitting a digital distress signal by activating ( or pressing ) the distress button ( or key ) on a marine radio equipped with Digital Selective Calling ( DSC ) over the VHF ( channel 70 ) and / or HF frequency bands.
Then, during missions in September 1918, Kindley earned the Distinguished Service Cross ( DSC ), Distinguished Service Cross with Oak Leaf Cluster and the British Distinguished Flying Cross.
* BMW: Co engineering partner and inventor with Robert BOSCH GmbH and Continental ( TEVES ) Dynamic Stability Control ( DSC ) ( including Dynamic Traction Control )
* Ford: AdvanceTrac with Roll Stability Control ( RSC ) and Interactive Vehicle Dynamics ( IVD ) and Electronic Stability Program ( ESP ); Dynamic Stability Control ( DSC ) ( Australia only )
* This DSC is a plain silver cross with rounded edges.
Permanently mounted marine VHF radios on sea-going vessels are required to have certification of some level of " Digital Selective Calling " ( DSC ) capability, to allow a distress signal to be sent with a single button press.
Recreational vessels do not need to comply with GMDSS radio carriage requirements, but will increasingly use the Digital Selective Calling ( DSC ) VHF radios.
A GMDSS system may include High Frequency ( HF ) radiotelephone and radiotelex ( narrow-band direct printing ) equipment, with calls initiated by digital selective calling ( DSC ).
DSC distress alerts, which consist of a preformatted distress message, are used to initiate emergency communications with ships and rescue coordination centers.
Because a DSC signal uses a stable signal with a narrow bandwidth and the receiver has no squelch, it has a slightly longer range than analog signals, with up 25 percent longer range and significantly faster.
DSC senders are programmed with the ship's Maritime Mobile Service Identity ( MMSI ) and may be connected to the ship's Global Positioning System ( GPS ), which allows the apparatus to know who it is, what time it is and where it is.
Sir John William Alcock KBE, DSC ( 5 November 1892 – 18 December 1919 ) was a Captain in the Royal Air Force who, together with navigator Lieutenant Arthur Whitten Brown, piloted the first non-stop transatlantic flight from St. John's, Newfoundland to Clifden, Connemara, Ireland.
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