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Grand Canyon National Park Fire Managers Plan Prescribed Burns on North Rim

Fire managers at Grand Canyon National Park anticipate initiating two prescribed burns on the North Rim this week as weather and fuel moisture conditions allow. https://www.nps.gov/grca/learn/news/slopes-and-hse-rx.htm




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North Rim Fall Prescribed Burns

Fire managers will take advantage of favorable weather conditions over the next several weeks and initiate prescribed burns on the North Rim of Grand Canyon National Park. https://www.nps.gov/grca/learn/news/north-rim-fall-prescribed-burns.htm




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News Release: Fire Managers at Grand Canyon National Park Plan Prescribed Fire Adjacent to Grand Canyon Village

Grand Canyon National Park fire managers—working with resources from Sedona Fire Department, Lake Mead National Recreation Area, Rocky Mountain National Park, Zion National Park, and Kaibab National Forest—anticipate initiating a prescribed fire treatment this weekend as weather and fuel moisture conditions allows. https://www.nps.gov/grca/learn/news/long-jim-3-prescribed-fire.htm




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Fire Managers at Grand Canyon National Park Continue Prescribed Fire Operations

Grand Canyon National Park fire managers—working with resources from Sedona Fire Department, Lake Mead National Recreation Area, Rocky Mountain National Park, Zion National Park, Saguaro National Park and Kaibab National Forest—are continuing operations on the Long Jim III Prescribed Fire. https://www.nps.gov/grca/learn/news/prescribed-fire-continues.htm




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Fire Managers at Grand Canyon National Park Complete Ignition Operations on Long Jim III Prescribed Fire

Grand Canyon National Park fire managers completed ignition operations on the Long Jim III Prescribed Fire. Crews will now monitor the unit and mop up any areas along the fire’s perimeter that may threaten the holding line. https://www.nps.gov/grca/learn/news/long-jim-rx-ignitions-complete.htm




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Prescribed Fire Update: Favorable Conditions Allow Fire Managers to Continue Operations on North Rim of Grand Canyon National Park

National Park Service (NPS) and US Forest Service (USFS) fire managers, working together as the North Zone Interagency Fire Management Program, anticipate initiating more prescribed fire (Rx) treatments this week as weather and fuel moisture conditions allow on the North Rim of Grand Canyon National Park. https://www.nps.gov/grca/learn/news/north-zone-rx-fires.htm




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Fire Managers May Initiate Additional North Rim Prescribed Fire

Fire managers will take advantage of continued warm, dry weather conditions over the next several weeks and may initiate additional prescribed fires on the North Rim of Grand Canyon National Park. https://www.nps.gov/grca/learn/news/bright-angel-rx.htm




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Fire Managers Plan Prescribed Fire Adjacent to Grand Canyon South Entrance Road

Grand Canyon National Park fire managers anticipate initiating prescribed pile burning this week as weather and fuel moisture conditions allow. https://www.nps.gov/grca/learn/news/grca-south-rim-piles-project.htm




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Fire Managers at Grand Canyon Plan Prescribed Fire Adjacent to Grand Canyon Village

Grand Canyon National Park fire managers-working with resources from Lake Mead National Recreation Area, Rocky Mountain National Park, Zion National Park, Lake Meredith National Recreation Area, Bryce Canyon National Park, Saguaro National Park and Kaibab National Forest anticipate initiating a prescribed fire treatment as early as tomorrow, as weather and fuel moisture conditions allow. https://www.nps.gov/grca/learn/news/fire-managers-at-grand-canyon-plan-prescribed-fire-adjacent-to-grand-canyon-village.htm




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Fire Managers at Grand Canyon Initiate Prescribed Fire Adjacent to Grand Canyon Village

Grand Canyon National Park fire managers will initiate a prescribed fire treatment today, as weather and fuel moisture conditions allow. The Long Jim Prescribed Fire is adjacent to the developed area on the South Rim, east of South Entrance Road and south of Highway 64 (Desert View Drive) East. https://www.nps.gov/grca/learn/news/fire-managers-at-grand-canyon-initiate-prescribed-fire-adjacent-to-grand-canyon-village.htm




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Fire Managers at Grand Canyon Continue Prescribed Fire Adjacent to Grand Canyon Village

Grand Canyon National Park fire managers continue to treat the Long Jim Prescribed Fire unit, as weather and fuel moisture conditions allow. On Tuesday, June 18, 2019, crews successfully treated 180 acres. https://www.nps.gov/grca/learn/news/fire-managers-at-grand-canyon-continue-prescribed-fire-adjacent-to-grand-canyon-village.htm




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Fire Resources at Grand Canyon Complete Ignition Operations on Long Jim Prescribed Fire

Grand Canyon National Park fire resources completed ignition operations on the Long Jim Prescribed Fire. Crews will continue to patrol the unit and mop up any areas along the fires perimeter that may threaten the holding line. https://www.nps.gov/grca/learn/news/fire-resources-at-grand-canyon-complete-ignition-operations-on-long-jim-rx.htm




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Musician Uses Truck Bed to Play Drive-By Concerts for Friends in Quarantine – and the Video is Incredibly Heartwarming

Tanner Howe, a singer-songwriter from Huntington Beach, hoped that his performances would brighten up isolating neighborhoods—and he was 100% correct.

The post Musician Uses Truck Bed to Play Drive-By Concerts for Friends in Quarantine – and the Video is Incredibly Heartwarming appeared first on Good News Network.




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Cross browser tabbed pages with embedded links - revisited and updated

An update to one of my early 'one page' demonstrations to bring it up to date using the latest CSS techniques.




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Cross browser tabbed pages version 2

A second version of the tabbed pages with a default page open on entry.




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Mini tabbed pages version 2

A version of my mini tabbed pages with the ability to have a tab open on page entry.




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CSS only tabbed pages

CSS only tabbed pages with persist and several other features. For IE9+, Firefox, Opera, Safari and Chrome.




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CSS Tabbed Pages - Radio method

Using my latest techniques to produce and improved tabbed pages with persist




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Prescribed Fires Are Not Created Equal: Fire Season and Severity Effects In Ponderosa Pine Forests of The Southern Blue Mountains

In the mid-1990s, forest managers on the Malheur National Forest were concerned about their prescribed fire program. Although they have only a few weeks of acceptable conditions available in the spring and fall, they were worried that spring-season prescribed burning might be exacerbating black stain root disease and having negative effects on understory plants.




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Searing The Rhizosphere: Belowground Impacts of Prescribed Fires

A century of fire suppression has resulted in dense fuel loads within the dry pine forests of eastern Oregon . To alleviate the risk of stand-replacing wildfire, forest managers are using prescribed fire and thinning treatments. Until recently, the impact of these fuel treatments on soil productivity has been largely unknown. Such information is essential for making sound management decisions about the successful reintroduction of fire to the ecosystem to retain biodiversity of soil fungi and achieve the desired future condition of large ponderosa pines with low fuel loads. In a recent pair of studies, led by researchers at the PNW Forestry Sciences Laboratory in Corvallis, Oregon, novel molecular techniques were utilized to investigate the response of soil ecosystems to prescribed burning and thinning. The research compared impacts of the season of burn and various combinations of fuel-reducing treatments. Results suggest that overly severe fires can damage soil productivity and that less intense fires can be used to gradually reduce accumulations of fuel. The findings are currently being implemented in decisions about forest management and contribute important new information to the science.




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Juvenile tree growth on some volcanic ash soils disturbed by prior forest harvest

The effects of mechanical disturbance from traditional ground-based logging and site preparation on volcanic ash soil and associated tree growth were investigated by using two study approaches in a retrospective study. This research was conducted on volcanic ash soils within previously harvested units in the Blue Mountains of northeast Oregon and southwest Washington. We assessed soil and tree attributes and their association with higher and lower levels of soil disturbance. The two approaches were independent efforts that yielded very different results.




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A closer look: decoupling the effects of prescribed fire and grazing on vegetation in a ponderosa pine forest.

Scientists have had little information about how prescribed fire and cattle grazing—common practices in many Western ponderosa pine forests—affect plant abundance and reproduction in the forest understory. Pacific Northwest Research Station scientists began to explore how these practices affect vegetation in a five-year study of postfire vegetation in eastern Oregon ponderosa pine forests where cattle have been routinely pastured from late June or early July through early to mid August. For this area of eastern Oregon, they found that excluding cattle grazing during peak growing season increased native plant cover and grass flowering capability in ungrazed areas compared to grazed areas. Because vegetation was measured prior to releasing cattle on the land, the study's results tend to reflect lasting grazing impacts rather than simple consumption.




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An embedding of the Morse boundary in the Martin boundary. (arXiv:2004.14624v2 [math.GR] UPDATED)

We construct a one-to-one continuous map from the Morse boundary of a hierarchically hyperbolic group to its Martin boundary. This construction is based on deviation inequalities generalizing Ancona's work on hyperbolic groups. This provides a possibly new metrizable topology on the Morse boundary of such groups. We also prove that the Morse boundary has measure 0 with respect to the harmonic measure unless the group is hyperbolic.




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Measuring Social Bias in Knowledge Graph Embeddings. (arXiv:1912.02761v2 [cs.CL] UPDATED)

It has recently been shown that word embeddings encode social biases, with a harmful impact on downstream tasks. However, to this point there has been no similar work done in the field of graph embeddings. We present the first study on social bias in knowledge graph embeddings, and propose a new metric suitable for measuring such bias. We conduct experiments on Wikidata and Freebase, and show that, as with word embeddings, harmful social biases related to professions are encoded in the embeddings with respect to gender, religion, ethnicity and nationality. For example, graph embeddings encode the information that men are more likely to be bankers, and women more likely to be homekeepers. As graph embeddings become increasingly utilized, we suggest that it is important the existence of such biases are understood and steps taken to mitigate their impact.




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Anonymized GCN: A Novel Robust Graph Embedding Method via Hiding Node Position in Noise. (arXiv:2005.03482v1 [cs.LG])

Graph convolution network (GCN) have achieved state-of-the-art performance in the task of node prediction in the graph structure. However, with the gradual various of graph attack methods, there are lack of research on the robustness of GCN. At this paper, we will design a robust GCN method for node prediction tasks. Considering the graph structure contains two types of information: node information and connection information, and attackers usually modify the connection information to complete the interference with the prediction results of the node, we first proposed a method to hide the connection information in the generator, named Anonymized GCN (AN-GCN). By hiding the connection information in the graph structure in the generator through adversarial training, the accurate node prediction can be completed only by the node number rather than its specific position in the graph. Specifically, we first demonstrated the key to determine the embedding of a specific node: the row corresponding to the node of the eigenmatrix of the Laplace matrix, by target it as the output of the generator, we designed a method to hide the node number in the noise. Take the corresponding noise as input, we will obtain the connection structure of the node instead of directly obtaining. Then the encoder and decoder are spliced both in discriminator, so that after adversarial training, the generator and discriminator can cooperate to complete the encoding and decoding of the graph, then complete the node prediction. Finally, All node positions can generated by noise at the same time, that is to say, the generator will hides all the connection information of the graph structure. The evaluation shows that we only need to obtain the initial features and node numbers of the nodes to complete the node prediction, and the accuracy did not decrease, but increased by 0.0293.




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System and process for flushing residual fluid from transfer lines in simulated moving bed adsorption

A process according to various approaches includes flushing an intermediate transfer line between a raffinate stream transfer line and a desorbent stream transfer line away from the adsorptive separation chamber to remove residual fluid including desorbent from intermediate transfer line. The process may include directing the residual fluid flushed from the intermediate transfer line to a recycle stream to introduce the residual fluid into the adsorptive separation chamber.




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Method and apparatus for output of high-bandwidth debug data/traces in ICS and SoCs using embedded high speed debug

Methods and apparatus for output of high-bandwidth debug data/traces in electronic devices using embedded high-speed debug port(s). Debug data is received from multiple blocks and buffered in a buffer. The buffer's output is operatively coupled to one or more high-speed serial I/O interfaces via muxing logic during debug test operations. The buffered data is encoded as serialized data and sent over the one or more high-speed serial I/O interfaces to a logic device that receives serialized data and de-serializes it to generate parallel debug data that is provided to a debugger. The buffer may be configured as a bandwidth-adapting buffer that facilitates transfer of debug data that is received at a variable combined data rate outbound via the one or more high-speed serial I/O interfaces at a data rate corresponding to the bandwidth of the serial I/O interfaces.




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Verification module apparatus for debugging software and timing of an embedded processor design that exceeds the capacity of a single FPGA

A plurality of Field Programmable Gate Arrays (FPGA), high performance transceivers, and memory devices provide a verification module for timing and state debugging of electronic circuit designs. Signal value compression circuits and gigabit transceivers embedded in each FPGA increase the fanout of each FPGA. Ethernet communication ports enable remote software debugging of processor instructions.




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Virtualizing embedded devices

A device virtualization system is described herein that separates common computer processing tasks of an embedded device from the application-specific peripherals of the embedded device to allow at least some functions of the device to be offloaded to servers or other computing devices. The device virtualization system greatly simplifies management, configuration, and control of virtual embedded devices. Because much of the software of the device runs on the virtualization server, information technology (IT) personnel can be assigned to manage the virtualization server and to apply any updates and diagnose any problems that occur. Moreover, a single server or group of servers can be used to provide virtualization services for a wide variety of virtualized embedded devices for a wide variety of users. Thus, the system enhances the usefulness of embedded devices and allows a longer lifetime and wider variety of uses than embedded devices today.




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Silanes with embedded hydrophilicity, dispersible particles derived therefrom and related methods

The invention provides a silane compound that includes a hydrophobic group and a silane ester group linked by a hydrophilic group for use as a surface treatment to an inorganic material, such as a pigment, the silane including a hydrophobic group and a silane ester group linked by a hydrophilic group. The invention includes a coated particle including an inorganic material coated with the silane compound(s) and methods of improving the wettability and/or dispersibility of an inorganic material such as a pigment, wherein the method comprises depositing the silane compounds on the surface of a pigment.




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Stacked catalyst bed for Fischer-Tropsch

The present invention pertains to a reactor tube comprising a fixed bed of Fischer-Tropsch catalyst particles, wherein the catalyst particles in 5% to 40% of the fixed bed volume at the upstream end have an average outer surface to volume ratio (S/V) in the range of between 3.0 to 4.5 mm−1, and the catalyst particles in the remaining fixed bed volume have an average outer surface to volume ratio (S/V) in the range of between 4.5 to 8.0 mm−1, and wherein the difference between the average S/V of the particles at the upstream end and the average S/V of the particles in the remaining fixed bed volume is at least 0.5 mm−1.




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Stacked catalyst bed for Fischer-Tropsch

The invention pertains to a reactor tube comprising a fixed bed of Fischer-Tropsch catalyst particles, wherein the catalyst particles in 5%-40% of the fixed bed volume at the upstream end have an average outer surface to volume ratio (S/V) of between 3.0 to 4.5 mm-1, and the remaining catalyst particles have an average S/V of between 4.5 to 8.0 mm-1, and wherein the difference between the average S/V of the particles at the upstream end and the remaining fixed bed volume is at least 0.5 mm-1. Additionally the fixed bed volume at the upstream end shows a full-bed apparent catalytic activity per volume unit lower than the full-bed apparent catalytic activity per volume unit in the remaining fixed bed volume and/or the weight of catalytically active metal per weight unit at the upstream end is more than 70% lower than in the remaining fixed bed volume.




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Process and plant for the production of methanol with isothermal catalytic beds

A process for the synthesis of methanol, comprising the steps of reforming a hydrocarbon source obtaining a make-up gas feed (101), feeding said make up gas to a synthesis loop (L), converting said make up gas to methanol (108) in a substantially isothermal catalytic environment, wherein said catalytic environment comprises a plurality of isothermal catalytic beds (11, 12, 21) preferably arranged in series, and at least a portion of make-up gas (101) is mixed with recycle gas (112) from the loop (L), obtaining a gaseous mixture of fresh gas and recycle gas, and at least a portion of said gaseous mixture is directed between two consecutive catalytic beds acting as a quench gas. A related plant is also disclosed.




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Distributed management with embedded agents in enterprise apps

Distributed mobile device management including a plurality of management agents is disclosed. Management-related information may be retrieved from a storage location accessible to a plurality of management agents. The management-related information may have been provided to the storage location from a management agent associated with a managed application. And at least one operation may be performed based at least in part on the management-related information.




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Illumination device and method for embedding data symbols in a luminance output

The invention relates to embedding data symbols of a data signal into a luminance output of an illumination device. The device includes a controller configured for receiving a first base pattern and a second base pattern within a frame period, and generating a shifted second pattern by phase shifting the second base pattern within the frame period with respect to the first base pattern in response to the data signal such that the data symbols are embedded in the luminance output of the device. The device also includes a first light source configured to generate a first luminance output in response to the first base pattern and a second light source configured to generate a second luminance output in response to the shifted second pattern. The first and second luminance outputs have different output spectra and the luminance output of the illumination device comprises both the first and second luminance outputs. With this approach, the short-time average light output of the illumination device remains constant, decreasing the visible flicker and allowing the use of lower switching frequencies relative to the prior art approaches.




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Wound dressing inhibiting lateral diffusion of absorbed exudate

A wound dressing including a hydrophilic layer and a hydrophobic layer is described. The hydrophilic layer absorbs exudate from a wound and the hydrophobic layer absorbs the exudate from the hydrophilic layer and traps the exudate. Because the hydrophilic layer is used adjacent to the wound, the exudate is readily absorbed thereby reducing the risk of maceration and infection of the wound tissue by the exudate. The hydrophobic layer receives the absorbed exudate from the hydrophilic layer and traps the exudate through an interaction that in turn prevents lateral diffusion of the exudate through the bandage to healthy portions of the skin. The hydrophilic and hydrophobic layers are fabricated from polymer fibers that can be spun to include components that facilitate wound healing, such as poly(hexamethylene biguanide) and/or hyaluronic acid.




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Auger bed for a lateral leveling cleaning system

A cleaning system for use in a combine harvester including an auger bed mounted within a frame such that when the combine harvester is laterally inclined from the horizontal, the cleaning system, including the auger bed and a sieve, may be leveled or substantially leveled to a generally horizontal position. The auger bed can include a plurality of augers located side by side with their axes positioned generally longitudinally in the combine harvester.




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Mitigating write faults arising from disturbed lubrication events

Apparatus and method for detecting and compensating for lubrication disturbance (lube disturb) events on a rotatable data recording medium. In some embodiments, a lube disturb event is detected responsive to displacement of a data transducer away from a first memory location on a rotating data recording medium during a write operation to write data thereto. The lube disturb event arises responsive to a transfer of accumulated contamination from a data transducer to a lubrication layer on the rotating data recording medium and a smearing of the transferred accumulated contamination along the first memory location. The write data are stored to a different, second memory location instead of to the first memory location responsive to the detected lube disturb event.




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Substrate device or package using embedded layer of voltage switchable dielectric material in a vertical switching configuration

A substrate device includes an embedded layer of VSD material that overlays a conductive element or layer to provide a ground. An electrode, connected to circuit elements that are to be protected, extends into the thickness of the substrate to make contact with the VSD layer. When the circuit elements are operated under normal voltages, the VSD layer is dielectric and not connected to ground. When a transient electrical event occurs on the circuit elements, the VSD layer switches instantly to a conductive state, so that the first electrode is connected to ground.




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Trunk, cargo area, and truck bed storage press

An adjustable cargo storage press for organizing and securing cargo items stored in a cargo storage area of an automobile. The adjustable cargo storage press is disposed within or integrated with a cargo area of an automotive vehicle such as a trunk, bed or bed liner of a car, truck, or sport utility vehicle. The press prevents movement of cargo items and potential damage to the cargo items during transport. The press also maintains the position of the cargo items for easy removal from the cargo storage area. The press includes one or more hinged walls that lock in a vertical position and move towards each other along guide tracks. The one or more hinged walls compress the cargo items between the hinged walls, and fold flat when not in use so as not to limit cargo storage capacity of the cargo storage area.




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Laced strapping system for securing loads in open vehicle beds

Some embodiments include a novel laced strapping system that provides a plurality of attachment points by which a tie-down lace can adjust the fit of a cargo mesh webbing to secure loads of items in an open bed of a vehicle. In some embodiments, the vehicle is a pick-up truck with a cargo bed. In some embodiments, the mesh webbing comprises a first truck bed mesh, a second truck bed mesh, and the plurality of attachment points. In some embodiments, tie-down lace interconnects the attachment points to secure together the first mesh and the second mesh.




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Cargo bed stake pocket adapted for securing J-hook strap thereto

Stake pocket formations are secured to a cargo bed frame of a land vehicle such as trailers and flatbed trucks for removably supporting sidewall supporting members. The formations include sidewalls secured to and projecting from the frame and an end wall extending between the sidewalls. An opening extends through the end wall and is adapted to receive the terminal end of a J-hook therethrough. The J-hook is secured to the formation by inserting the terminal end thereof into the pocket placing an upper edge of the end wall into the J-hook gap and rolling/rotating the J-hook thereby inserting the terminal end into the opening. The J-hook cannot be removed from the pocket unless it is rolled/rotated in the opposite direction. While within the stake pocket and without strap tension, the J-hook abuts the trailer frame and formation end wall and is, thereby, maintained within the pocket.




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Side rail of a flatbed trailer for use with cargo restraint devices

A side rail of a floor assembly of a trailer, such as a flatbed trailer, including a channel formed in a top wall of the side rail and an aperture formed in the top wall of the side rail at a location spaced-apart from the channel. The channel extends along a length of the side rail and is configured to receive a first cargo restraint device therein. The aperture is configured to receive a second cargo restraint device therein.




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Portable and removable anchor for truck bed slots

An apparatus and method for providing a removable anchor for use in tying down a load, or for securing a winch cable for use in recovering a disabled vehicle or other load. The anchor may be removably attached to the deck/bed of a trailer or vehicle (e.g., a car carrier or wrecker/tow truck), using one or more slots or stake pockets located on a cargo surface of the deck. The removable anchor may include: a projection member shaped and sized to fit into a slot on the cargo surface, or to protrude through a stake pocket; a crown attached to, or integrally forming a part of, the projection member, and configured to receive and anchor one or more tie down connectors; and a key attached to, or integrally forming a part of, the projection member. The key can be passed into the slot and manipulated between removable and locked positions. Alternatively, the key may be used to removably secure the anchor to the stake pocket.




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Methods and systems for manipulating particles using a fluidized bed

The present invention comprises methods and systems for manipulation of media and particles, whether inert materials or biomaterials, such as cells in suspension cell culture. The methods and systems comprise use of an apparatus comprising a rotating chamber wherein the actions of the combined forces fluid flow force and centrifugal force form a fluidized bed within the rotating chamber.




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IC package with embedded transformer

Aspects of a method and system for configuring a transformer embedded in a multi-layer integrated circuit package are provided. In this regard, a windings ratio of a transformer embedded in a multi-layer IC package bonded to an IC may be configured, via logic, circuitry, and/or code in the IC, based on signal levels at one or more terminals of the transformer. The transformer may comprise a plurality of inductive loops fabricated in transmission line media. The integrated circuit may be flip-chip bonded to the multi-layer package. The IC may comprise a signal strength indicator enabled to measure signal levels input to or output by the transformer. The windings ratio may be configured via one or more switches in the IC and/or in the multi-layer package. The IC and/or the multi-layer package may comprise ferromagnetic material which may improve magnetic coupling of the transformer.




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Conditioning device and method for drying and controlling the temperature of a ballast bed

Conditioning device (24) and method for drying and/or controlling the temperature of a ballast bed (12) of a railway track system (10), wherein the railway track system (10) has sleepers (14) resting on the ballast bed (12) and rails (16) resting on the sleepers, wherein the conditioning device has a bogie (30) for moving the conditioning device (24). An outlet nozzle (36) for blowing temperature-controlled air into the ballast bed (12) via at least one blowing-in region (26) positioned between two adjacent sleepers (14) is connected to the bogie (30), as is at least one cover plate (42) for essentially air-tight coverage of an upper side, pointing essentially in the direction counter to the direction of gravity, of a side strip (20), provided next to the sleepers (14) in the direction of travel, of the ballast bed (12). In a method for drying and controlling the temperature of a ballast bed (12) of a railway track system (10), an upper side of the ballast bed (12) and/or at least one sleeper (14) and at least one rail (16) are sealed in an essentially air-tight fashion outside a blowing-in region (26) before temperature-controlled air is blown into the ballast bed (12) via the blowing-in region (26).




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Method and apparatus for prolonging the service life of a collective protection filter using a guard bed

A method for extending the service life of a Collective Protection (CP) filter includes: providing at least one CP filter comprising a filter bed; and passing an airstream through a guard bed configured to protect the filter bed by removing one or more of airborne contaminants and battlefield contaminants. An apparatus for extending the service life of a CP filter includes: a CP filter comprising a filter bed; and a guard bed configured to protect the filter bed by removing one or more of airborne contaminants and battlefield contaminants.




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Method and device for cleaning exhaust gases by way of fluidized bed reactors

The invention relates to a method for cleaning exhaust gases, in which an exhaust gas and a sorbent are combined in a fluidized bed reactor. In a subsequent filter system, solid matter is segregated, and thereafter, up to 99 per cent of the sorbent is re-channeled into the fluidized bed reactor, wherein the gas is subjected to a rotation around the flow axis in the fluidized bed reactor.




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Trackbed liner and related methods

A trackbed liner which has a particular utility in a railway trackbed, as well as in other trackbeds such as tram trackbeds. The trackbed liner may include an upper support layer; a lower support layer; and at least one middle filtration layer of a material having a plurality of pores and which is normally impermeable to liquid water. In use and under the load of a vehicle acting on the trackbed, the filtration layer permits passage of liquid water upwardly therethrough but restricts the passage of solids materials, so as to restrict pumping erosion of material located beneath the liner. The trackbed liner may be used to renovate a trackbed comprising ballast contaminated with clay particles. The method includes removing contaminated ballast; laying the trackbed liner; and locating fresh ballast on an upper surface of the liner to provide a renovated trackbed.