A product quality analysis and control system is provided. The product quality analysis and control system includes a processing system that is configured to receive data of objective qualities of a product from multiple data gathering modules. Each of the multiple data gathering modules is respectively positioned at corresponding nodes of a supply chain and is configured to receive from sensors data of objective qualities of a product when the product is at each of the corresponding nodes. The processing system includes a model repository and a data evaluation module. The data evaluation module is configured to select, from the model repository, a model associated with a type of the product and to use the model to analyze the data to identify changes in the objective qualities along the supply chain.

The present disclosure provides compositions and methods related to COVID-19 detection. In particular, the present disclosure provides plasmonic metal nanoparticles (MNPs) for use in assays to detect and/or quantify neutralizing antibodies to SARS-CoV-2 in a sample. The compositions and methods of the present disclosure provide a portable, inexpensive, rapid, and accurate antibody assay platform that can be used to evaluate protective immune responses in individuals who have recovered from COVID-19 infection, as well as the efficacy, strength, and duration of vaccines that are under development or in clinical trials.

The present application provides a trypsin detection film, a preparation method therefor, application thereof and a trypsin detection kit, which relates to the technical field of trypsin detection. The preparation method for the trypsin detection film comprises the following steps: providing a polymer film substrate; immersing the polymer film substrate in a dye solution to attach a dye to the polymer film substrate, so as to obtain a trypsin detection film.

A method of detecting the presence of an NBOMe in a sample which comprises of contacting the sample with an activated p-quinone such as 2,3,5,6-tetrachloro-1,4-benzoquinone (TCBQ) and an aldehyde, for example acetaldehyde, and optionally a buffer and observing a colour change, which when present, correlates with the presence of an NBOMe. The ingredients may be provided in the form of a kit which can include a colour standard or comparison chart.

Disclosed here are systems and methods for collecting and/or screening of a pancreatic secretion, using a capsule endoscope comprising an imaging system and a trypsin sensor, and a tether coupled to the capsule endoscope.

A system for monitoring an analyte concentration in liquid is provided. The system includes a coupon comprising an absorbent body with a window through the absorbent body wherein the liquid is maintained in said window by capillary action and surface tension. A reactant is in the absorbent body wherein the reactant is capable of diffusing into the window to react with an analyte in the liquid, or the reactant is able to react with the analyte within the coupon itself, with color-indicating by-products of the reaction diffusing into the window, wherein the analyte is present in an analyte concentration, to form a reactant with a color wherein the color has an intensity which correlates to the analyte concentration. A light source is provided which is capable of passing light into the window wherein the light is attenuated by the color proportional to the analyte concentration to form attenuated light. A detector is provided which is capable measuring an intensity of the attenuated light. Alternatively, the color change can be read by eye and compared to a color chart relating the color to an analyte concentration.

Copper nanoclusters (CuNCs), thymine-modified hyaluronic acid (TMHA), and poly(copper nanoclusters) (PCuNCs) are disclosed. In certain embodiments, the TMHA is represented by formula I, wherein the degree of substitution of theymine in the HA is in a range of 1-50%, and wherein n for GlcA-GlcNAc repeats is an integer, from 10 to 10,000.

In some embodiments, the present disclosure is directed to coatings or thin films comprising a dye or stain embedded within a matrix, e.g. a polymer matrix.

The two-dimensional material (such as graphene, hBN) based Paper Microfluidic Device will detect various analytes, which can be related to disease conditions, to minimize guesswork for a common individual to recognize a certain analyte, and faster confirmation of analytes for professionals. It will enable to predict an increase of analyte concentrations through machine learning, be applicable in both medical and non-medical fields, have a refill enclosure, and a GPS activated app to contact nearby critical infrastructure in cases of medical applications. This will have the ability to detect analytes far faster than any traditional analyte detection systems in both medical and non-medical fields.

The present invention provides a method of producing a test strip for measuring a calcium concentration in a body fluid test sample obtained from a living body (human or animal) by a colormetric change, and a test strip for measuring a calcium concentration in a human or animal body fluid test strip by a colormetric change.