Abstract:
A method and system of aligning a probe to wells includes holding the probe at one potential and holding the wells at a different potential, moving the probe to an estimated center position above a selected well, lowering the probe into the selected target well, moving the probe in positive and negative directions along first and second axial dimensions until changes in potential are detected at the probe to indicate electrical contact between the probe and the selected well, and calculating a center location of the selected well along the first and second axial dimensions as mid-points between the points of contact for the respective axial dimensions. The method and system further include lowering the probe into contact with a floor of the selected well and calculating a center location along a third axial dimension as a predetermined distance above the position of the probe. The method and system determine center locations for other wells based on known spacing between wells and the calculated center locations of one or more selected wells.
Abstract:
The present invention relates to systems and methods of temperature referencing for melt curve data collection. More specifically, the present invention relates to systems and methods for collecting DNA melt curve data for a DNA sample and a temperature reference material.
Abstract:
An automatic pipette assembly for an isothermal titration micro calorimetry system, comprising a pipette housing, a syringe with a titration needle arranged to be inserted into a sample cell for supplying titrant, and a linear activator for driving a plunger in the syringe, the titration needle is rotatable with respect to the housing and is provided with a stirring paddle arranged to stir fluid in the sample cell, wherein the automatic pipette assembly comprises a stirring motor for driving the rotation of the titration needle. There is also provided an isothermal titration micro calorimetry system.
Abstract:
The invention relates to improvements in methods of processing thermal profiles, and systems (200) for rapidly and precisely collecting and detecting energetic materials, such as explosives, and non-energetic materials such as drugs and other contraband.
Abstract:
The invention relates to a temperature controlling process and apparatus for investigation of thermal phase transformations, wherein a sample (2) and a reference substance (1) are placed into a furnace (3) with rising temperature of a predetermined rate operated by a programmed temperature controller (4), the temperatures of sample (2) and reference substance (1) are sensed by temperature sensors (5, 6), the difference between the temperatures (Ts; Tr) of the sample (2) and reference substance (1) is determined by a temperature difference measuring device (9), the output signal being Q-DTAt, which, in turn, is coupled to an element forming a signal proportional to the temperature difference, and when a difference between the temperature of the sample (2) T'?s? and that of the reference substance (1) T'?r? is generated, these are measured by the known quasi-static heating technique, and a difference is kept between them automatically and controlled by the transformation itself continuously at such a value that the transformation should take place at a constant rate orders of magnitude smaller than in the other known solutions. The essence of the invention lies in that the integration of signal Q-DTAt obtained as a function of time and proportional to the difference in the temperatures of the sample (2) T'?s? and reference substance (1) T'?r?, then transforming the signal INTEGRAL Q-DTAt obtained at the output of integrating unit (18) as a function of time into a signal depending on the temperature of the sample, INTEGRAL Q-DTAT.
Abstract:
The invention is directed to a differential analysis method and apparatus wherein a sample and reference are subjected to an externally applied disturbance, such as temperature change, in accord with a temperature program comprising two or more linear segments of equal time duration, and the measured differential signal is processed into real and imaginary components relating, respectively, to the energy storage and energy loss portions of the signal.
Abstract:
The present invention relates to an ethylene polymer comprising moieties according to Formula (IB): wherein R is a moiety comprising ≥1 and ≤10 carbon atoms; wherein R 1 and R 2 are each individually hydrogen or a moiety comprising ≥1 and ≤5 carbon atoms, R 1 and R 2 may be the same or different; wherein the ethylene polymer has a molecular weight distribution of ≥ 3.0 and ≤ 40.0; the ethylene polymer has a melting temperature of ≥ 115 °C; the ethylene polymer has a density ≥ 935 and ≤ 960 kg/m3; the ethylene polymer is essentially free from chromium, hafnium, zirconium and tetrahydrofuran; for the fraction of the ethylene polymer having a molecular weight > 100 kg/mol, the intrinsic viscosity of the ethylene polymer is related to the molecular weight according to the inequality: log I.V . M - 3.10 Such polymers have high density, high purity and good processability, whilst maintaining barrier properties for oxygen and water vapour at a level similar to high-density polyethylenes produced via catalytic processes.
Abstract:
A process for producing a seed slurry (SSY) in a seed slurry apparatus (SSA) from solid seed particles (SSP)is disclosed, the seed slurry apparatus (SSA) comprising an input zone (IZ) and a heating zone (HZ), the input zone (IZ) feeding the heating zone (HZ) and the heating zone (HZ) comprising a heating arrangement (HA), said process comprising the steps of feeding the solid seed particles (SSP) from the input zone (IZ) into the heating zone (HZ), the solid seed particles having a seed composition, the seed composition comprising triglycerides, heating said seed composition in said heating zone (HZ) by means of said heating arrangement (HA) to obtain a seed slurry (SSY) at least partly on the basis of partly melted seed composition, wherein said heating involves measuring a seed slurry temperature representation of the seed slurry and said heating is at least partly controlled on the basis of the measured seed slurry temperature representation. Furthermore, a seed slurry apparatus (SSA) and use of a seed slurry (SSY) and a seed slurry apparatus (SSA) is disclosed.