Active Sampling Device for Determining Pollutants in Surface and Pore Water

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. We designed and evaluated an active sampling device, using as analytical targets a family of pesticides purported to contribute to honeybee colony collapse disorder. Simultaneous sampling of bulk water and pore water was accomplished using a low-flow, multi-channel pump to deliver water to an array of solid-phase extraction cartridges. Analytes were separated using either liquid or gas chromatography, and analysis was performed using tandem mass spectrometry (MS/MS). Achieved recoveries of fipronil and degradates in water spiked to nominal concentrations of 0.1, 1, and 10 ng/L ranged from 77 ± 12 to 110 ± 18%. Method detection limits (MDLs) were as low as 0.040–0.8 ng/L. Extraction and quantitation of total fiproles at a wastewater-receiving wetland yielded concentrations in surface water and pore water ranging from 9.9 ± 4.6 to 18.1 ± 4.6 ng/L and 9....

Constable: Girl with autism shares art — and joy — with patients

  She’d rather draw than sleep: Mackenzie Collins, 12, shows some of her cartoon animals in her Arlington Heights bedroom. Mark Welsh | Staff Photographer   In a matter of seconds, Mackenzie Collins, 12, draws this cartoon cat wearing a hospital gown. The Arlington Heights girl created a series of cartoon animals inspired by images in the elevators at Lurie Children’s Hospital in Chicago. Mark Welsh | Staff Photographer   Inspired by animals used in the elevators to designate floors at Lurie Children’s Hospital in Chicago, Mackenzie Collins, 12, of Arlington Heights turns them into cartoon creatures she draws and names. Mark Welsh | Staff Photographer   During her medical appointments at Lurie Children’s Hospital in Chicago, Mackenzie Collins, 12, passes out hundreds of drawings she makes of cartoon creatures she calls her “Lurie Animals.” Making her fellow patients smile makes her happy. Mark Welsh | Staff Photographer   The white cat in this illustration helps patients and their parents remember what floor to go to at Lurie’s Childrens Hospital in Chicago. It also inspires Mackenzie Collins, 12, of Arlington Heights to create hundreds ...

Singing in the Rubble: A Musical Map of the Cold War in Paweł Pawlikowski’s Cold War

Suddenly jazz became a major taboo in Soviet society until Stalin’s death. In Western Europe, by contrast, mainly in Paris, jazz took off after the Nazis’ defeat in the hues of Miles Davis and Dave Brubeck. These postwar musicians reimagined the red-hot extemporaneous rhythms of the bebop movement for the more relaxed, pastel-like style of what’s been called “cool jazz.” They counteracted the wild exuberance of the war years with musical nonchalance. It’s not by chance that in 1957, Davis released his acclaimed album Birth of the Cool. This is the sort of music that Pawlikowski uses in Cold War to introduce us to 1950s Paris. Laid-back, suave, cymbal snare tails – one hears hints of “Take Five.” A map collector, a filmmaker, an amateur ornithologist – Peter Greenaway, in his short film A Walk through H (1978), leads viewers on a colorful bird-watching tour across make-believe lands by way of maps, ninety-two of them. Nearly every shot of the film is a static image of mapped territory overlaid by routes denoting the flight patterns of various species of birds. Sometimes Greenaway’s maps themselves even look like birds. This experiment in avian cartography challenges viewers to re...

Global Calcium Hypochlorite Market to Cross US$ 6 Bn by 2027

Global Calcium Hypochlorite Market is expected to rise from its initial estimated value of USD 598.96 billion in 2018 to an estimated value of USD 774.81 billion by 2026, registering a CAGR of 3.27% in the forecast period of 2019-2026. Increase in the environment concerns and water consumption is the major factor for the growth of this market. Calcium Hypochlorite market research report also directs the manufacturer about planning of advertising and sales promotion efforts and makes it more effective. This report has been prepared by considering various steps for collecting, recording and analysing market data. Calcium Hypochlorite market report covers strategic profiling of key players in the market, comprehensively analyzing their core competencies, and drawing a competitive landscape for the market. It also delivers list of the leading competitors and provides the insights about strategic industry analysis of the key factors influencing the Chemical and Materials industry. The Calcium Hypochlorite market report is a professional and a detailed report focusing on primary and secondary drivers, market share, leading segments and geographical analysis. Calcium hypochlorite is an...

In the world of BIM (as described in the International Standard, ISO 19650), managing the information

In the world of BIM (as described in the International Standard, ISO 19650), managing the information created on a project is the key driver – from defining what is required, through creation of the information to finally sharing it between various parties for contractual purposes. It’s the process that counts and ensuring everyone involved understands the benefits and works to deliver them. In an ideal world, the existing information we use to make decisions on built assets would be correct… but we all know that is rarely the case! ‘Legacy’ information is used on almost all projects in the AEC industry but the varying accuracy of these sometimes incredibly old documents means we’re not always acting upon the best information. Where speed is important, one particular use case of FARO’s ScanPlan can help quickly determine how accurate the information is and make the measured visual documentation immediately shareable. Aimed at the gap between traditional survey methods and ‘full’ 3D laser scanning – the ScanPlan is a useful handheld device that enables users to accurately (to 30mm at 20m range) survey a space by simply walking around while pointing the device at the space boundar...

Safely Remove Drill Chuck; Receive Motor, Gearbox, and Clutch

There’s a treasure trove of usefulness inside of an electric drill. [Steven Dufresne], Hackaday writer and the mad scientist behind Rimstar.org, kindly documented how to safely and reliably remove the chuck from a drill motor. You may think this is easy, but once in a while you’ll come across a drill determined to hold onto all its bits. We certainly were entertained by the lengths [Steven] went to in the video below to get a Black and Decker to give up its chuck. An understanding of how the chuck and gearbox are connected, combined with the right tools and a bit of force, gets you a motor, gears and gearbox, and a clutch. There’s not much left in the drill after that, and you can put some or all of those components to new use — like using them for the drive system of a BB-8 Droid. Many projects (like this walking scooter) make use of cordless drills as motor sources. Being able to skip the chuck in order to interface directly to the shaft is useful for those projects where the drill is at least a semi-permanent part of the build. Ask your friends, neighbors, and at work. Cheap cordless drills and screw guns have been around for a long time. It’s usually the batteries that go a...

EZVIZ introduces its analogue and wireless CCTV systems – Cameras – Press Release

LONDON, 23rd NOVEMBER 2018, EZVIZ Inc., the global smart home security brand, is ensuring consumers have complete peace of mind in knowing their homes are secure and protected with the introduction of its ezWireless CCTV kit and analogue ‘Everyday’ and ‘Crispr’ wired CCTV kits. The EzWireless CCTV kit is available from Very and Rymans from £399.99 whilst the analogue kits are available from Rymans and Toolstation from £198.98. All of the kits are weatherproof (IP66), feature motion detection and night vison and work with IFTTT & EZVIZ Alarm Systems. EzWireless CCTV Kit – 4 x 1080p Cameras, 1x 8 Channel Wireless NVR with 1TB HDD (works with Alexa + Google Home Assistant) The ezWireless CCTV Kit is a comprehensive Wi-Fi smart security camera package which comes complete with 4x ezGuard Plus cameras and a Network Video Recorder (NVR) with 1TB memory capacity to ensure every moment is captured. The ezGuard 1080p resolution Wi-Fi cameras have a built-in strobe light and 100db alarm to help deter intruders or unexpected guests. This can be set automatically to activate upon movement detection or manually via the EZVIZ app on smartphones and has the ability to communicate wit...

Industrial Tape Market Analysis by Key Players, Size, Competitive Analysis, Global and Regional Forecast

“Global Industrial Tape Market Analysis, Forecast & Outlook (2019-2024)” provides an extensive research and detailed analysis of the present market along with future outlook. The Industrial Tape Market report covers the analysis of key stake holders of the Industrial Tape industry. Key players of Industrial Tape market are being profiled along with their respective financials and growth strategies Access Global Industrial Tape Market Research Report Details at: at https://www.pioneerreports.com/report/358828    Industrial tapes include both adhesive tapes, non-adhesive tapes and special purpose tapes. Adhesive tapes are used for joining materials. Non-adhesive tapes and special purpose tapes are used in a variety of specific applications such as thread sealing, electrical insulation, electronic die or device carrying (TAB), EMI/RFI shielding, static discharge control, x-ray shielding or x-ray photo marking, part identification, label or display protection, sealing, seaming, welding, floor marking/directions, heat sinks, thermal protection, bundling cables or products, non-skid/antislip, slide/glide/friction reduction, and more. There are major five classification of industr...

Herbicide Application: Effective Management of Hard Water in Spray Solutions

Water quality is a frequently overlooked factor that can adversely affect the performance of pesticides, especially herbicides. Besides pH, water “hardness” is a key concern, with much of the agricultural water sources across the U.S. exhibiting high concentrations of calcium, magnesium, iron, sodium, and aluminum. These hard-water cations — especially calcium and magnesium — can wreak havoc in a spray tank when not managed. Weak acid herbicides, such as glyphosate and 2,4-D, are most susceptible, but no herbicide chemistries are completely immune to the negative effects of hard water, including dicamba and sulfonylurea (SU) herbicides. Use of ammonium sulfate (AMS) in spray solutions only counters the effects of calcium hard-water cations, providing no protection whatsoever from magnesium and the others. Iowa applicator Jason Winegar of Nutrien Ag Solutions has been able to eliminate having to handle and pour 50-pound bags of ammonium sulfate into his sprayer while in the field. “When you do a good job of addressing hard water, the herbicides mix, blend, and apply much better,” says Jason Winegar, an applicator at Nutrien Ag Solutions in Dunlap, IA. “You get more uniform spray ...