Abstract:
A tree harvester includes a body and a harvesting system coupled to the body. The tree harvester further includes a control system coupled to the body. The control system is configured to receive data from the harvesting system regarding a characteristic of a harvested tree and control operation of the harvesting system based on the data. The harvesting system is configured to remove an intermediate portion of the harvested tree below a tree crown and graft the tree crown to a tree stump.
Abstract:
A method for sealing a leak in a pipeline used to transport fluid includes positioning a sealing device within the pipeline, moving the sealing device through the pipeline to a leak location, and internally generating an inflation pressure to inflate the sealing device to substantially cover a leak opening and limit release of the fluid from the pipeline.
Abstract:
An electrical power generation system includes a first fuel cell having a first responsiveness, a second fuel cell having a second responsiveness different from the first responsiveness, and a controller coupled to the first fuel cell and the second fuel cell. The controller is configured to engage the first fuel cell to satisfy at least a portion of a base load and selectively engage the second fuel cell to satisfy at least a portion of a load increase.
Abstract:
Systems, devices, methods, and compositions are described for providing an actively-controllable disinfecting implantable device configured to, for example, treat or prevent an infection in a biological subject.
Abstract:
Methods, apparatuses, computer program products, devices and systems are described that include accepting one or more blood vessel sleeve dimensions based on blood vessel data from an individual; and making a rapid-prototyped blood vessel sleeve at least partly based on the one or more blood vessel sleeve dimensions.
Abstract:
Methods and articles are provided for reducing the amount of water consumed by a plant over a period of time, sequestering CO 2 , and producing electricity, where each method includes providing the plant with a composition including at least about 0.1 (wt./wt. or vol./vol.) % CO 2 and/or at least about 0.1 wt./wt.% of a composition that generates CO 2 . An apparatus is also disclosed for providing the plant with a composition including CO 2 and/or a composition that generates CO 2 .
Abstract:
A thermal insulator includes a plurality of layers. At least some of the layers include phononic crystals having a phononic bandgap, wherein heat transporting phonons within a selected range of frequencies are substantially blocked by each phononic crystal layer. The plurality of layers thermally isolate a first region from a second region, wherein the first region is at one end of the plurality of layers and the second region is at the other end of the plurality of layers.
Abstract:
An electrochemical device (such as a battery) includes at least one electrode having a fluid surface and one or more sensors configured to detect an operating condition of the device. Fluid-directing structures may modulate flow or retain fluid in response to the sensors. An electrolyte within the device may also include an ion-transport fluid, for example infiltrated into a porous solid support.
Abstract:
A method and system for the thermoelectric conversion of nuclear reactor generated heat including upon a nuclear reactor system shutdown event, thermoelectrically converting nuclear reactor generated heat to electrical energy and supplying the electrical energy to a mechanical pump of the nuclear reactor system.
Abstract:
Methods and related systems for modulating neural activity by repetitively blocking conduction in peripheral neural structures with electrical stimuli are disclosed. Methods and systems for reversing effects of blocking stimuli and/or for producing substantially permanent conduction block are also disclosed.