836results about How to "Control volume" patented technology

In a disk array device for cooling respective sections including a HDD by a fan, drop of cooling efficiency by the difference of conditions of HDD mounted and unmounted sections is prevented and the use of a dummy HDD is deleted / eliminated. A housing contains a HDA mounted on the HDD, a power controller board for performing control to the HDD, a power unit for supplying power to each section, a fan for cooling the housing therein, and a backboard for connecting all the sections. On one backboard surface, the HDA is mounted, which has a cooling function for making cooling air flowing in the housing and exhausting air from the housing via a region on which the HDA are mounted and via a vent hole on the backboard. For the vent hole, a shutter is mounted, which has a mechanism for adjusting an open area rate of the vent hole by opening when the HDA is mounted and closing when removed.

For a controller that manages managed forwarding elements that forward data in a network, a method for configuring the managed forwarding elements is described. The method computes forwarding state and pushes the computed forwarding state to the managed switching elements. The forwarding state defines forwarding behaviors of the managed switching elements. The method configures the managed switching elements to exchange forwarding state with each other. The method configures the managed switching elements by configuring a first managed forwarding element to send a forwarding state information request to a second managed forwarding element and by configuring the second managed forwarding element to (1) respond to the forwarding state information request by looking up a forwarding state information repository and (2) update the forwarding state information repository with forwarding states information received from a third managed forwarding element.

For a controller of a distributed network control system comprising several controllers for managing forwarding elements that forward data in a network, a method for managing the forwarding elements is described. The method changes a set of data tuples stored in a relational database of the first controller that stores data tuples containing data for managing a set of forwarding elements. The method sends the changed data tuples to at least one of other controllers of the network control system. The other controller receiving the changed data tuples processes the changed data tuples and sends the processed data tuples to at least one of the managed forwarding elements.

A controller for managing several managed switching elements that forward data in a network is described. The controller includes an interface for receiving input logical control plane data in terms of input events data. The controller includes a converter for converting the input logical control plane data to output logical forwarding plane data by processing the input events data. The logical forwarding plane data is for subsequent translation into physical control plane data. The controller includes an input scheduler for (1) categorizing the input events data into different groups based on certain criteria and (2) supplying the input events data into the converter in a manner that each different group of input events data is processed separately by the converter.

Microfluidic cartridges for agglutination reactions are provided. The cartridges include a microfluidic reaction channel with at least two intake channels, one for an antigen-containing fluid and the other for an antibody-containing fluid, conjoined to a reaction channel modified by incorporation of a downstream flow control channel. At low Reynolds Number, the two input streams layer one on top of the other in the reaction channel and form a flowing, unmixed horizontally-stratified laminar fluid diffusion (HLFD) interface for an extended duration of reaction. Surprisingly, the design, surface properties, and flow regime of microfluidic circuits of the present invention potentiate detection of antibody mediated agglutination at the stratified interface. Antigen:antibody reactions involving agglutination potentiated by these devices are useful in blood typing, in crossmatching for blood transfusion, and in immunodiagnostic agglutination assays, for example.

For a particular controller for managing managed forwarding elements that forward data in a network, a method for computing forwarding state using a set of inputs from a first controller and a second controller that is a back up controller for the first controller is described. The method receives a first subset of the set of inputs from the first controller. After failure of the first controller, the method receives a second subset of the set of inputs from the second controller. At least one input of the second subset of the set of inputs is duplicative of an input in the first subset. The method computes forwarding state using the first and second subsets of the inputs but without using the duplicative input.

A controller for distributing logical control plane data to other controllers is described. The controller includes an interface for receiving user inputs to define logical datapath sets. The controller includes a translator for translating the user inputs to output logical control plane data. The logical control plane data is for subsequent translation into logical forwarding plane data by several other controllers. The controller includes a scheduler for (1) storing the output logical control plane data in a plurality of storage structures, each storage structure corresponding to one of the other controllers and (2) sending the output logical control plane data to the other controllers from the corresponding storage structure.

A device used to treat heart disease by decreasing the size of a diseased heart, or to prevent further enlargement of a diseased heart. The device works by limiting the volume of blood entering the heart during each cardiac cycle. The device partitions blood within the heart, and protects the heart from excessive volume and pressure of blood. The device is placed within the interior of the heart, particularly within a ventricular cavity. The device is a hollow sac, with two openings, which simulates the shape and size of the interior lining of a ventricle of a normal heart. It allows the ventricle to fill through one opening juxtaposed to the annulus of the inflow valve to a predetermined, normal volume, and limits filling of the heart beyond that volume. It then allows blood to be easily ejected through the second opening through the outflow valve. By limiting the amount of blood entering the ventricle, the ventricle is not subjected to the harmful effect of excessive volume and pressure of blood during diastole, the period of the cardiac cycle when the heart is at rest. This allows the heart to decrease in size, or to reverse remodel, and to recover lost function. In some applications, a second device may be simultaneously placed inside the heart to take up excessive space between the heart and the primary device.