Algae harvesting and cultivating systems and methods for producing high concentrations of algae product with minimal energy. In an embodiment, a dead-end filtration system and method includes at least one tank and a plurality hollow fiber membranes positioned in the at least one tank. An algae medium is pulled through the hollow fiber membranes such that a retentate and a permeate are produced.

Algae harvesting and cultivating systems and methods for producing high concentrations of algae product with minimal energy. In an embodiment, a dead-end filtration system and method includes at least one tank and a plurality hollow fiber membranes positioned in the at least one tank. An algae medium is pulled through the hollow fiber membranes such that a retentate and a permeate are produced.

A stand for the collection of stem cells from a placenta is disclosed. The stand includes a base with an upper surface adapted to hold a placenta during stem cell collection, a back support, and an upper platform with a surface suspended above the base and adapted to hold the placenta during collection of stem cells. The stand is preferably composed of cardboard or a similar material and is foldable between a folded configuration and an assembled configuration. The back support is hinged to the base and can move between a position parallel to the base in the folded configuration and a position perpendicular to the base in the assembled configuration.

The invention is a method of two-phase anaerobic digestion where monitoring and adjusting the nitrogen status (carbon to nitrogen molar ratio, i.e. C/N molar ratio or total or ammoniacal nitrogen content) enables maintaining optimum conditions during the process. The method improves the use of a variety of feedstock materials or facilitates monodigestion of one feedstock. Especially the introduction of nitrogen rich feedstock materials in the process is amended. A community of hydrolyzing and acidogenic microorganisms in the first phase digester performs ammonification i.e. release of organic nitrogen as ammonia. Nitrogen and phosphorus are removed and recovered from the digestate which then undergoes biogasification in the second phase of the process. Reject water from biogasification can be recycled within the process.

The invention is directed to a Perfusion device for biological tissues comprising a casing having two parts, a first part (1) and a second part (9), a holder (7) for a plurality of hollow penetration structures (8), wherein the hollow penetration structures (8) are provided with at least one orifice having fluid communication through the holder (7) a support (5) for the biological tissue (6) characterized in that the support (5) for the biological tissue (6) is positioned in the casing at a distance to the holder (7) that by joining the first part (1) and the second part (9) to form the casing, the hollow penetration structures (8) are in proximity to the holder (7).

Use of the perfusion device in a process for disaggregation of a biological tissue to yield target cells.

Systems, devices, and methods of the present disclosure assist with management of tubes and hoses during surgical procedures. The systems, devices, and methods provide for the proper opening and closing of tubes to facilitate performance of steps in a surgical procedure. Systems, devices, and methods of the present disclosure control fluid delivery to and from a medical device, including devices for tissue processing and cleaning.

Embodiments provided herein generally relate to methods and materials for ultrasound-mediated introduction of exogenous substances into microorganisms. Some embodiments relate to methods of introducing an exogenous material into a microorganism such as an algae. The methods can include, for example, providing a microorganism (e.g., algae); providing a population of bubbles that comprise one or more nucleic acid molecules and/or one or more polypeptide or one or more protein molecules; contacting the population of bubbles with the algae; applying ultrasound to the bubbles and algae with sufficient energy to cavitate one or more of bubbles comprising the one or more nucleic acid molecules in proximity to the algae; and maintaining the algae and the one or more burst bubbles comprising the one or more nucleic acid molecules in contact for a period of time sufficient to permit entry of at least one nucleic acid molecule into the algae.

Algae harvesting and cultivating systems and methods for producing high concentrations of algae product with minimal energy. In an embodiment, a dead-end filtration system and method includes at least one tank and a plurality hollow fiber membranes positioned in the at least one tank. An algae medium is pulled through the hollow fiber membranes such that a retentate and a permeate are produced.

A system for generating and using carbon dioxide comprises: (a) a closed system combustion stage for combusting a fuel in a furnace and producing an off gas containing carbon dioxide; and (b) an algae growth and oxygen generation stage for receiving off gas generated in the closed system combustion stage wherein the algae growth and oxygen generation stage through the action of algae: (i) converts carbon dioxide to a chemical product, and oxygen; and (ii) provides a gas stream to the closed system combustion stage, the gas stream comprising oxygen and carbon dioxide. The closed system combustion stage may, for example, be conducted in a power station. The system is also suitable for integration with crop cultivation, for example sugar cultivation, where carbon dioxide for algal growth may be sourced from combustion of plant material, fermentation of plant material or both.