Various methods and systems are provided for cryogenic heat transfer by nanoporous surfaces. In one embodiment, among others, a system includes a cryogenic fluid in a flow path of the system; and a system component in the flow path that includes a nanoporous surface layer in contact with the cryogenic fluid. In another embodiment, a method includes providing a cryogenic fluid; and initiating chilldown of a cryogenic system by directing the cryogenic fluid across a nanoporous surface layer disposed on a surface of a system component.

A liquid separator system having a gas phase zone, an aqueous phase zone and a denser liquid zone is used to separate mixtures of fluids. The separator can be used for separating molten sulfur from liquid redox solution or reslurry water. The system includes a vessel with a top part and a bottom part. The vessel has a larger diameter at the top part than at the bottom part. The system also includes an inlet for introducing a redox solution or reslurry water and molten sulfur, which is denser than redox solution or reslurry water, into the vessel. An outlet near the bottom part of the vessel allows a flow of the molten sulfur from the vessel. An interface control structure senses an interface level between the redox solution or reslurry water and the molten sulfur, and the interface control structure controls the flow of molten sulfur from the outlet. The interface control structure is adjusted to optimally alter the vertical height of the interface level within the vessel so that the residence time of the molten sulfur in the vessel does not decrease as the sulfur production throughput decreases, and so that the interface area of the molten sulfur and the redox solution is reduced as the sulfur throughput decreases. A pressure controller monitors the pressure in the vessel and adds or removes gas from a gas phase zone in the vessel to maintain a predetermined pressure regardless of the vertical height of the interface.

A method of producing a surface-treated carbon black powder dispersion includes subjecting carbon black fine particles having a volume average particle size of 100 nm to 20 μm to wet granulation and drying by heating to obtain granulated carbon black having a hardness of 12 cN or less and a pH of less than 7, grinding the granulated carbon black to obtain a ground product having a volume average particle size of 20 nm to 20 μm, and subjecting the ground product to wet oxidization in an aqueous medium. The resulting surface-treated carbon black powder dispersion exhibits excellent print density, print quality, discharge stability, and storage stability when used as an inkjet printer aqueous black ink.

For the safety of everyone, please do your part. Last Friday, health officers in Alameda and Contra Costa Counties and several of their Bay Area counterparts issued an order generally requiring workers and members of the public to wear face masks when they are out and about in the community. The orders were sweeping, and applied to most of the cases in which any of us leave our homes during this global health emergency.…

A device used to smooth a material's surface with abrasion. More specifically, the device is in the form of a glove or mitten with an abrasive layer that is placed over, and secured on, a user's hand to protect the user's hand and to provide an agile and flexible range of motion while sanding a material's surface.

A facemask for a helmet. The helmet includes a forehead area and two side areas. The facemask comprises a plurality of intersecting, integral metal supports forming a face protection area. The face protection area includes a top section, two side attachment sections and a front section. The top section can be shaped to conform to and attached to the forehead area of the helmet while each side attachment section can be shaped and formed to attach to one of the side areas of the helmet. Further, the front section can extend from the top section and each attachment section.

A surface covering kit is disclosed, comprising a plurality of generally rectangular panels (100). Each panel is provided with grooves (301, 302, 301', 302') forming an insertion channel (303) when two panels (100) are laid next to each other along their transverse sides (105, 105') in a common laying plane (101). An extraneous locking element (210) is received by the insertion channel (303), the extraneous locking element (210) having a longitudinal dimension and a cross-section perpendicular to said longitudinal dimension which forms a cross with at least four cross arms. The corresponding cross arms of the insertion channel have two parallel flank surfaces (1603, 1604) each, and each of the cross arms is oriented diagonally in a plane perpendicular to the panel plane (102).

A unitary safety surface tile is provided. The tile may interlock with at least one other tile. The tiles may be configured for disposing on a base of loose fill and for receiving a covering of loose fill. The tiles may include a plurality of hollow inverted pyramidal shaped pockets. Each of the pockets may connect to at least two other pockets along a top edge of each pocket. Each of the pockets may engage the base of loose fill and/or receive the covering of loose fill. Each of the pockets may include one or more apertures for allowing passage of fluid through each of the pockets. Each tile may further include a plurality of edges. The edges may border the plurality of pockets. Each of at least two of said plurality of edges may be adapted for engaging at least one edge of at least one other tile.

A patient interface assembly having an improved support for use in securing a patient interface device to the head of a patient overcomes the shortcomings of conventional headgear. The improved support provides a self-adjusting anchor point situated anterior to the ear of the patient that provides enhanced stability in mounting the patient interface device to the patient.

A system for determining an optimal hardness of a patient interface device includes a fit score determination unit structured to receive a 3-D model of the patient interface device and a 3-D model of a patient's face and to determine a fit score between the patient interface device and the patient's face based on the 3-D model of the patient interface device and the 3-D model of the patient's face, and a hardness determination unit structured to determine a hardness value of the patient interface device based on the determined fit score.

Several embodiments of straps and headgear assemblies are described. Some of the embodiments provide straps that can had varied elasticity over the length of the straps. Some of the embodiments provide adjustment mechanisms that facilitate customization of headgear to a user.

A surface scattering antenna with a tightly-coupled or tightly-connected array of radiators provides an adjustable antenna with broadband instantaneous bandwidth.

Microfluidic devices having an electrowetting configuration and an optimized droplet actuation surface are provided. The devices include a conductive substrate having a dielectric layer, a hydrophobic layer covalently bonded to the dielectric layer, and a first electrode electrically coupled to the dielectric layer and configured to be connected to a voltage source. The microfluidic devices also include a second electrode, optionally included in a cover, configured to be connected to the voltage source. The hydrophobic layer features self-associating molecules covalently bonded to a surface of the dielectric layer in a manner that produces a densely-packed monolayer that resists intercalation and or penetration by polar molecules or species. Also provided are microfluidic devices having an electrowetting configuration that further include a section or module having a dielectrophoresis configuration; systems that include any of the microfluidic devices in combination with an aqueous droplet and a fluidic medium immiscible with the medium of the aqueous droplet; related kits; and methods of manipulating droplets, optionally containing micro-objects such as biological cells, within the microfluidic devices.

A film is sputter-deposited on an essentially plane, extended surface of a substrate which has recesses therein, namely at least one of grooves, of holes, of bores, of vias, of trenches. So as to establish on one hand a homogeneous thickness distribution of the film along the addressed surface of the substrate and, on the other hand, a thick film deposition within the recesses, sputter deposition is performed first at a large distance between a sputter surface of a target and the addressed surface of the substrate and then at a reduced distance between the addressed surfaces.

A potentiostat/galvanostat employs a controller for providing digital control signals to a digital-to-analog converter (DAC) that generates an analog output signal in response to digital control signals. A high current driver produces a high current output in response to the analog output signal from the DAC. A high current monitor monitors the output from the high current driver to produce a feedback signal for the high current driver to control the current produced by the high current driver and to produce an output dependent on the current supplied from the high current driver for monitoring by the controller. A counter electrode contact for a counter electrode is connected with the output of the high current monitor. A working electrode contact for a working electrode is electrically connected with a fixed stable voltage potential to enable electrochemical analysis of material between the counter electrode and the working electrode. A low current driver produces a low current range output in response to an analog output signal from the DAC. A low current monitor monitors the working electrode contact to detect current at the working electrode contact to supply an output dependent on the current detected for monitoring by the controller and for providing a feedback signal to the low current driver in order to control the output of the low current driver to control current between the counter electrode contact and the working electrode contact.

Provided is a method for simply evaluating defects caused in interface states in oxide semiconductor thin films and protective films in TFTs having protective films formed on the surface of oxide semiconductor thin films without actually measuring the characteristics of the same. This evaluation method evaluates defects caused in the interface states by measuring electron states in the oxide semiconductor thin film by a contact method or noncontact method. The defects caused in the interface states are any of the following (1)-(3). (1) Threshold value voltage (Vth,) when a positive bias is applied to the thin-film transistor(2) Difference in threshold value voltage (ΔVth) before and after applying the positive bias to the thin-film transistor(3) Threshold value during the first measurement when a plurality of measurements is made of the threshold value voltage when a positive bias is applied to the thin-film transistor.

Viruses and other bioagents are of high medical and biodefense concern and their detection at concentrations well below the threshold necessary to cause health hazards continues to be a challenge with respect to sensitivity, specificity, and selectivity. Ideally, assays for accurate and real time detection of viral agents and other bioagents would not necessitate any pre-processing of the analyte, which would make them applicable for example to bodily fluids (blood, sputum) and man-made as well as naturally occurring bodies of water (pools, rivers). We describe herein a robust biosensor that combines the sensitivity of surface acoustic waves (SAW) generated at a frequency of 325 MHz with the specificity provided by antibodies and other ligands for the detection of viral agents. In preferred embodiments, a lithium tantalate based SAW transducer with silicon dioxide waveguide sensor platform featuring three test and one reference delay lines was used to adsorb antibodies directed against Coxsackie virus B4 or the negative-stranded category A bioagent Sin Nombre virus (SNV), a member of the genus Hantavirus, family Bunyaviridae, negative-stranded RNA viruses. Rapid detection (within seconds) of increasing concentrations of viral particles was linear over a range of order of magnitude for both viruses, although the sensor was approximately 50×104-fold more sensitive for the detection of SNV. For both pathogens, the sensor's selectivity for its target was not compromised by the presence of confounding Herpes Simplex virus type 1. The biosensor was able to detect SNV at doses lower than the load of virus typically found in a human patient suffering from hantavirus cardiopulmonary syndrome (HCPS). Further, in a proof-of-principle real world application, the SAW biosensor was capable of selectively detecting SNV agents in complex solutions, such as naturally occurring bodies of water (river, sewage effluent) without analyte pre-processing.

On Facebook, live streaming just got taken things a step further: with monetization. Many suspected monetizing virtual events was coming, and it seems to be rapidly arriving on the largest social network. Facebook has come forward with new updates to assert its dominance in this COVID-19 era of online entertainment and relationships. New Facebook Tools […]

The post Facebook Now Lets You Charge Entry To Livestream Events appeared first on DJ TechTools.

A surface machining method for a single crystal SiC substrate, including: a step of mounting a grinding plate which includes a soft pad and a hard pad sequentially attached onto a base metal having a flat surface, a step of generating an oxidation product by using the grinding plate, and a step of grinding the surface while removing the oxidation product, wherein abrasive grains made of at least one metallic oxide that is softer than single crystal SiC and has a bandgap are fixed to the surface of the hard pad.

A paperboard or fiberboard sheet is provided with at least one preapplied adhesive strip used to connect together and an adjacently positioned surface protector to form a dust-proof and/or liquid-proof seal between the two surface protectors.

An assembly comprising a duct (1) for passing a flow of cryogenic fluid, and a valve (2); the assembly being characterized in that the duct (1) includes an interface for inserting the valve, the interface forming an internal abutment (51) and an external abutment (52);the valve (2) being configured in such a manner as to be inserted into said insertion interface by sliding, the valve (2) comprising a valve body (3) presenting a first end (31) and a second end (32), the valve body (3) being adapted to be bolted in said insertion interface in such a manner that the first end (31) and the second end (32) come into abutment respectively against the internal abutment (51) and against the external abutment (52), the assembly including an internal sealing element (61) arranged between the internal abutment (51) and the first end (31), and an external sealing element (62) arranged between the external abutment (52) and the second end (32).

The BBC has defended its policy of using the term Islamic State when referring to the blood-soaked terrorists that claimed the lives of 30 Britons in Tunisia and tens of thousands of people in the Middle East.

FOOTBALL fans across Hampshire were left in utter misery after England lost 2-1 to Uruguay tonight.

AN AWARD-winning folk singer is bringing music fans from across the world into her little Hampshire cottage with her weekly Facebook live concerts.

HAMPSHIRE rail users can expect a week of disruptions.

PLANNERS last night backed three major waterfront developments that are set to change the face of Southampton’s waterfront.

SOUTHAMPTON has become the centre of a volunteer effort to provide medical and care staff with 3D-printed face protectors.

Would you like to have Siri respond to you when your device is covered or face down? Then you are in luck as Thomas Domville shows us how to make Hey Siri listen with the Facedown Detection or covered in iOS.

Facebook will be awarding financial support to over 30 local small businesses impacted by COVID-19. Policy Manager Diana Doukas was interviewed during this edition of WNCW's Friday Feature Interview of the Week to talk about this exciting news. Facebook, with a center located in Rutherford County, NC has partnered with groups across North Carolina to lend support in this crucial time of need. This discussion first aired on 88.7 FM on April 10th. Posted by Host and Producer of The Friday Feature- Paul Foster, WNCW Senior Producer, News Director, and Morning Edition Regional Host

Faculty, staff and some students with the College of Engineering and Technology at Western Carolina University are using 3D printers at the college's Rapid Center to develop visors for face shields for use by healthcare workers in the fight against the COVID-19 pandemic. Patrick Gardner, Director of the WCU Rapid Center, was i nterviewed in this Friday Feature piece. The interview first aired on April 17, 2020. Posted by Host and Producer of The Friday Feature- Paul Foster, WNCW Senior Producer, News Director, and Morning Edition Regional Host

The Pan American Health Organization this week warned of an impending humanitarian crisis in Haiti due to the coronavirus pandemic. Haiti has reported relatively few cases of COVID-19 but it shares the island of Hispaniola with the Dominican Republic, which is experiencing one of the worst outbreaks in the hemisphere. With the Dominican Republic under lockdown, thousands of laid off migrant workers have headed home to Haiti and presumably some of them are carrying the virus with them. "There is real danger of a large-scale outbreak followed by a humanitarian crisis in Haiti," said Carissa Etienne, the head of PAHO, in a briefing this week with reporters. She said Haiti's health-care system is ill-equipped to deal with an outbreak of a highly-infectious, potentially-fatal respiratory disease. And the measures used elsewhere to stem the spread of COVID-19 are impractical or impossible in Haiti. "It is extremely difficult to institute proper social distancing in Haiti," she said —

In the video, Tyra advises contestant Danielle Evans to close the gap in her front teeth, saying, 'Do you really think you can a have a covergirl contract with a gap in your mouth?'

Spoken word extravaganza to promote social enterprise once more.

Brad “Scarface” Jordan first came to the public’s attention as a member of Houston’s controversial group The Geto Boys. The trio - Scarface, Willie D, and Bushwick Bill - made dark, edgy, and often disturbing music. Their songs like “Mind Playing Tricks on Me” and “Damn It Feels Good to be a Gangsta” gained them legions of both fans and critics.

Scarface released his first solo album in 1991, and has since put out classics like Mr Scarface Is Back, The Diary, and The Fix, that continue his career-long streak of well-crafted storytelling and unflinching honesty and self-examination. Now he has a new project - a memoir written with Benjamin Meadows-Ingram called Diary of a Madman: The Geto Boys, Life, Death, and the Roots of Southern Rap, published by Harper Collins. The book covers his life with the same directness and power we’ve seen in his raps.

Our talk with Face covers his musical influences in great detail, and also finds time to cover his own career, the book, how he felt trapped by his own name, and lots more.

See http://theciphershow.com/episode/104/ for full show notes and comments.

Richard Lutz, in isolation, watches the world go by. 

The Dynamic Controls app for ROLI Dashboard turns a ROLI Lightpad Block into a highly customizable MIDI control surface, allowing you to design your own control layout using Buttons, Faders and XY Pads. Connect your Lightpad Block to the computer and launch ROLI Dashboard to load the Dynamic Controls app. Use Dashboard to edit the […]

The post Dynamic Controls 2 turns ROLI Lightpad Block into customizable MIDI control surface appeared first on rekkerd.org.

Questions implying that terrorism is encouraged under the Islamic faith elicited a public apology from Scottsdale Community College after they appeared on a class quiz.

Johan Andersson, the store's logistics boss whose team found them, had just read that hospitals were suffering from a shortage of masks amid the coronavirus outbreak so he rang up Sahlgrenska University Hospital - Sweden's biggest - in Gothenburg and asked if they were interested.

Bank of India, Bank of Baroda, Oriental Bank of Commerce, Allahabad Bank, Union Bank of India, and Bank of Maharashtra have jointly lent close to Rs 4,000 crore to the two Rotomac Group companies.

International brands have begun sharing prototypes of fashion masks in cotton and blends with Indian suppliers who are awaiting a nod from the Centre to export non-surgical masks.

Several apparel makers and fast-moving consumer goods companies had earlier stepped up to produce medical-grade masks as a philanthropic act when Covid-19 struck but now it is apparent that the pandemic is set to alter lifestyles for at least some time to come.

Even at locations open to deliveries, e-commerce players are facing manpower crunch due to travel restrictions on delivery partners.

Coronavirus has highlighted the digital divide among low-income as well as rural students. Schools that don’t send students home with laptops rushed them equipment so they could do their homework online. School administrators say some parents claim to have internet access, but it may only be through a phone plan. Districts have distributed hot spots for families without a plan or where service is undependable. Particularly in rural communities like Montmorency, reliable internet connectivity is a major hurdle. Montmorency is a K-8 district in Whiteside County with around 230 students. Alex Moore is the superintendent. “On a good day, I get four megabytes per second download speed, so I knew that was going to be an issue. About half of our families probably have decent internet,” said Moore. Even that “good day” download speed doesn’t meet the FCC’s minimum recommendation for e-learning. For many younger students, remote learning has to be pencil and paper. Schools like Somonauk set up

All Illinoisans are required to wear a mask when they are doing things like grocery shopping, using public transportation or any other activity where they can’t maintain a distance of six feet. This order went into effect May 1. But what about other things like walking or running outside? The Illinois Department of Public Health’s guidelines suggest that masks are not needed when you are doing things like mowing your lawn or even running and walking in your neighborhood. Sandra Martell is the public health administrator for Winnebago County . She said that although a mask isn’t required, people should be prepared. “I think it always becomes important for people to always be intentional about it. To have one with them if they need to wear one,” she said. “They see someone approaching them to be able to put that on or if they are going to pass someone, to make sure that they can put one on as well.” She said there is a theoretical risk that extends past a direct encounter. Martell said a

IT has been remarkably clear throughout this crisis that Local Government has been crucial – being responsible for getting large parts of the support promised by the Scottish Government out to those that need it most.

On this edition of Your Call’s Media Roundtable, we're discussing the COVID-19 outbreak in Iran, which continues to be the worst hit country in the Middle East. The virus has infected more than 76,000 people in Iran. More than 4,800 have died.

Fatima, now 17, was eating dinner with her family in Nigeria two years ago when she heard the gunshots. "Unknown to us, the village had been surrounded and was being invaded," she says. "We covered ourselves with [a] mattress and cried for help to no avail." Fatima and her mother fled into the bush, where they were separated; they didn't see each other again for 18 months. Fatima – and other women in conflict zones – are often perceived as victims. They may be in many cases, but they also hold multiple and sometimes conflicting identities: as fighters, breadwinners and leaders. Photographer Robin Hammond sought to capture the many roles they play in his series of portraits, "Making the Invisible Visible," which had its first public showing this past week at the Women Deliver 2019 Global Conference in Vancouver, Canada. Noraisa Macud, 52, fled the fighting between Philippine military forces and Islamic militants in Marawi, a predominantly Muslim city, in 2017. Hundreds of thousands of

The Pan American Health Organization this week warned of an impending humanitarian crisis in Haiti due to the coronavirus pandemic. Haiti has reported relatively few cases of COVID-19 but it shares the island of Hispaniola with the Dominican Republic, which is experiencing one of the worst outbreaks in the hemisphere. With the Dominican Republic under lockdown, thousands of laid off migrant workers have headed home to Haiti and presumably some of them are carrying the virus with them. "There is real danger of a large-scale outbreak followed by a humanitarian crisis in Haiti," said Carissa Etienne, the head of PAHO, in a briefing this week with reporters. She said Haiti's health-care system is ill-equipped to deal with an outbreak of a highly-infectious, potentially-fatal respiratory disease. And the measures used elsewhere to stem the spread of COVID-19 are impractical or impossible in Haiti. "It is extremely difficult to institute proper social distancing in Haiti," she said —

The Pan American Health Organization this week warned of an impending humanitarian crisis in Haiti due to the coronavirus pandemic. Haiti has reported relatively few cases of COVID-19 but it shares the island of Hispaniola with the Dominican Republic, which is experiencing one of the worst outbreaks in the hemisphere. With the Dominican Republic under lockdown, thousands of laid off migrant workers have headed home to Haiti and presumably some of them are carrying the virus with them. "There is real danger of a large-scale outbreak followed by a humanitarian crisis in Haiti," said Carissa Etienne, the head of PAHO, in a briefing this week with reporters. She said Haiti's health-care system is ill-equipped to deal with an outbreak of a highly-infectious, potentially-fatal respiratory disease. And the measures used elsewhere to stem the spread of COVID-19 are impractical or impossible in Haiti. "It is extremely difficult to institute proper social distancing in Haiti," she said —