melting temperature


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tem·per·a·ture mid·point (Tm, tm),

the midpoint in the change in optic properties (absorbance, rotation) of a structured polymer (for example, DNA) with increasing temperature.
Synonym(s): melting temperature

melting temperature

The point in a DNA hybridisation reaction at which 50% of the nucleotides are annealed (linked) to their complement (i.e., are double-stranded), which is a function of the stringency of the hybridising conditions.
References in periodicals archive ?
The softening temperature (ST), melting temperature (MT), flowing temperature (FT) are defined as the temperatures at which the samples height decrease to 75%, 50% and 25% of the original height, respectively [11, 15].
The melting temperature before rolling is 165[degrees]C, and over 170[degrees]C after the heat treatment.
Thus, increasing pressure typically raises a material's melting temperature.
The net result is an apparent independence of the melting temperature on ethylene contents above ~12 wt % when only the peak melting temperature is recorded.
The free energy for the reduction of silica by magnesium in ductile base iron with 3.8% C and 1.8% Si at a melting temperature of 2600F (1427G) is -75,712 calories.
Experts have long viewed carbon conversion as the key technical challenge for LT:BLG because the melting temperature for kraft-liquor smelt creates an upper limit on operating temperature.
The foundry had steel with a melting temperature of 2700F (1482C) at the bottom of the furnace, followed by pig iron that melted at 2000F (1093C).
The topsheet is made of a carded web of fibers having a first melt temperature, while the polymeric sheet has a second melting temperature and a property of shrinking under the application of heat.
"The core can move and any variation from one shot to the next has a serious effect on the part." This is not made simpler by the fact that you're molding with resin nearly twice as hot as the melting temperature of the core metal.
Thermal [MI], g/10 min Properties Sample Supplier Condition-E Condition-P [T.sub.g], [degrees]C BLDPE Dow 0.47 -- -- HDPE Samsung 0.29 -- -- PS Dow -- 4.22 94.0 Thermal Properties Sample [T.sub.m], [degrees]C BLDPE 109.9 HDPE 132.5 PS -- [T.sub.g] = Glass transition temperature at the center of the transition region [T.sub.m] = Melting temperature at the melting peak Table 2 Temperature Profiles of the Extruder and the SR Module.
Its plasticizing barrel contains a streamlined spreader, and melting temperature is accurately controlled by a PID temperature controller which shows any deviation from setpoint for precise melt management, according to the manufacturer.