摘要:
Systems, methods, and devices for analyzing small volumes of fluidic samples, as a non-limiting example, less than twenty microliters are provided. The devices are configured to make a first sample reading, for example, measure an energy property of the fluid sample, for example, osmolality, make a second sample reading, for example, detecting the presence or concentration of one or more analytes in the fluid sample, or make both the first sample reading and the second sample reading, for example, measuring the energy property of the fluid sample as well as detecting the presence or concentration of one or more analytes in the fluid sample.
摘要:
A device and a system are for measuring fluid potential in a plant tissue by measuring pressure changes caused due to osmosis of the plant fluid. The measuring device includes a compartment having a ridged body configured for containing an osmoticum. The compartment has at least one opening; at least two selective barrier layers, such as a membrane positioned at least over the openings of the compartment; and at least one pressure sensor configured for detecting changes in pressure of fluid in the compartment. The selective barrier is located for selectively allowing water transfer between the plant fluid and the osmoticum in the compartment. The compartment is configured such that there is a direct contact between the plant fluid and the osmoticum therein via the selective barrier.
摘要:
In accordance with the invention, a fluid sample is measured with a tear film measuring system that includes a processing device that receives a sample chip comprising a sample region configured to contain an aliquot volume of sample fluid, the processing device configured to perform analysis of osmolarity and of one or more biomarkers within the sample fluid, wherein the analysis of biomarkers includes normalization of biomarker concentration values.
摘要:
The invention relates to a method of analysing a sample of free cells, in particular blood cells. Blood platelet counts are obtained by agitating a blood cell suspension in the presence of air and counting the number of small particles in the suspension both before and after agitation. Cell friability is determined by subjecting a sample of cells to stress in vitro and detecting the number of cell fragments caused by the applied stress. Since applied stress affects red blood cell fragments and platelets differently, it is possible to distinguish between the two types of cells.
摘要:
In accordance with the invention, a fluid sample is measured with a tear film measuring system that includes a processing device that receives a sample chip comprising a sample region configured to contain an aliquot volume of sample fluid, the processing device configured to perform analyses of osmolarity and of one or more biomarkers within the sample fluid, wherein the analysis of biomarkers includes normalization of biomarker concentration values.
摘要:
A sensor (1) and method for measuring the concentration of one or more chemical substances within a solution. The sensor includes a body of saturated hydrogel (103) held within a sensor body (100). A window (107) allows flow-through of the chemical substance to be measured. The hydrogel (103) is held under a predetermined compressive force within the sensor body (100) such that the hydrogel (103) exerts a base pressure. A pressure sensor (111) such as a strain gauge senses the pressure exerted by the hydrogel (103) within the sensor body (100). The sensed pressure is stored or displayed. The hydrogel (103) is reactive to the one or more chemical substances so that contact causes the hydrogel (103) to either increase the pressure above the base pressure under which the hydrogel (103) to either increase the pressure above the base pressure under which the hydrogel (103) is held or to decrease the pressure relative to the base pressure of the hydrogel (103).