Systems and methods are disclosed for providing virtual assays of an oil sample such as crude oil based on near infrared (NIR) spectroscopy carried out on the oil sample, and the density of the oil sample. The virtual assay provides a full range of information about fractions of the oil sample including naphtha, gas oil, vacuum gas oil, vacuum residue, and other information about the properties of the oil sample. Using the system and method herein, the virtual assay data pertaining to these several fractions of the oil sample and the oil sample itself are obtained without the need to fractionate the oil sample into the several components.

A drag reducing efficiency test is performed on a sample. The sample includes a crude-oil based fluid and a drag reducing agent. The sample is placed within an inner volume defined by a sample housing. A sensing portion of a sensor is submerged in the sample within the sample housing. The sensor includes a disk (sensing portion) and a supporting rod. A lid is placed on the sample housing to isolate the sample within the inner volume. The sensor is coupled to an air bearing motor. The sensor is rotated by the air bearing motor at a plurality of shear rates. For each shear rate, the sensor measures a torque applied by the sample on the disk in response to the disk rotating while submerged in the respective sample at the respective shear rate.

The invention relates to a method for determining the intrinsic viscosity [η] of an aqueous polymer solution at a temperature T, wherein the aqueous polymer solution comprises at least one acrylamide-based polymer in an aqueous solvent, the aqueous solvent having a salinity of from 6 to 250 g/L, the method comprising the steps of: —providing a single universal relation R.sub.1 between (i), the product of polymer concentration and intrinsic viscosity C.Math.[η], and (ii) specific viscosity at zero shear rate η.sub.sp; —performing a measurement of the dynamic viscosity of the aqueous polymer solution at one polymer concentration C.sub.1, at temperature T and at various shear rates; —determining from said measurement the zero-shear viscosity η.sub.0 of the aqueous polymer solution at polymer concentration C.sub.1 and at temperature T; —calculating the specific viscosity at zero shear rate of the aqueous polymer solution at polymer concentration C and at temperature T as η.sub.sp=(η.sub.0−η.sub.s)/η.sub.s, where η.sub.s is the zero-shear viscosity of the aqueous solvent; —estimating the intrinsic viscosity [η] of the aqueous polymer solution at temperature T by applying the universal relation R.sub.1 to the calculated specific viscosity at zero shear rate η.sub.sp and polymer concentration C.sub.1.

A smear staining machine and a smearing control method and device thereof. The viscosity of the test sample is used for guiding the configuration of at least on smearing parameter. Since the viscosity of the test sample presents multiple influences of many effecting parameters, it is more suitable for presenting the characteristics of the test sample. Therefore, better smearing effect could be acquired by referring the viscosity of the test sample to get the smearing parameter.

A smear staining machine and a smearing control method and device thereof. The viscosity of the test sample is used for guiding the configuration of at least on smearing parameter. Since the viscosity of the test sample presents multiple influences of many effecting parameters, it is more suitable for presenting the characteristics of the test sample. Therefore, better smearing effect could be acquired by referring the viscosity of the test sample to get the smearing parameter.

Systems and techniques are described making use of a vibratory transducer and a reflector spaced from the vibratory transducer to form a cavity for receiving a fluid between the vibratory transducer and the reflector, wherein the vibratory transducer is vibrated to generate a wave in the cavity, which propagates through fluid in the cavity from a surface of the vibratory transducer and is being reflected by the reflector to generate a counter-propagating wave in the cavity. Based on the wave generated at the vibratory transducer and the counter-propagating wave generated at the reflector in combination, an indication of the energy returned to the vibratory transducer by the reflector is determined. One or more material properties of the fluid are determined based on the determined indication of the energy returned to the vibratory transducer.

Systems and techniques are described making use of a vibratory transducer and a reflector spaced from the vibratory transducer to form a cavity for receiving a fluid between the vibratory transducer and the reflector, wherein the vibratory transducer is vibrated to generate a wave in the cavity, which propagates through fluid in the cavity from a surface of the vibratory transducer and is being reflected by the reflector to generate a counter-propagating wave in the cavity. Based on the wave generated at the vibratory transducer and the counter-propagating wave generated at the reflector in combination, an indication of the energy returned to the vibratory transducer by the reflector is determined. One or more material properties of the fluid are determined based on the determined indication of the energy returned to the vibratory transducer.

A method includes generating a 3D computer-coded model of a component and performing simulations on the model to determine an onset of gross plastic deformation in a plurality of regions of the component, wherein the model is stored in a computer-readable medium.

A method includes generating a 3D computer-coded model of a component and performing simulations on the model to determine an onset of gross plastic deformation in a plurality of regions of the component, wherein the model is stored in a computer-readable medium.

Some embodiments of a blood coagulation testing system include an analyzer console device and a single-use cartridge component configured to releasably install into the console device. In some embodiments, the blood coagulation testing system can operate as an automated thromboelastometry system that is particularly useful, for example, at a point-of-care site.