Sheet masks are a cinch to use, require little formal beauty know-how, and make clean-up a total breeze. The Ariul 7 Days Sheet Mask is one of CVS’ highest rated beauty products and treats acne-prone and reddened skin with a dose of tea tree oil. You should check out these other incredible tea tree oil uses, too.

The NFC electronics operate in a low-power mode with minimal component count and a small footprint compared to alternative systems. The platform uses a dual-layer, copper-on-polyimide substrate (Pyralux AP8535R, DuPont, Wilmington, DE), laser patterned and populated with a radio frequency (rf) system on a chip that features an integrated microcontroller and a 14-bit analog-to-digital converter with ISO 15693 compatible rf front end. Figure 2A shows a simplified schematic illustration to highlight that amplification relies on a simple voltage follower design with a high-frequency filter that eliminates fluctuations introduced by the electric field of the primary NFC antenna. This NFC electronic subsystem magnetically couples to electrochemical sensors embedded in a disposable microfluidic substrate. Figure 2B shows a completed device adhered to surfaces with small radii of curvature to demonstrate the mechanical robustness of this coupling scheme. Figure 2 (C and D) shows the corresponding current (I) versus voltage (V) curves associated with the magnetic connection and the variation in phase response for the antenna in response to bending. These results highlight stable antenna performance metrics (i.e., Q factor and resonance peak position) even during mechanical deformations and under cyclical attachment/detachment conditions. Figure 2E shows I-V curves recorded at regular intervals during repeated cycles of magnetic attachment/detachment. Figure 2F exhibits the effect of bending on the impedance of magnetic contacts over a wide range of frequencies.

Fiat Chrysler has test roads at proving grounds that replicate notorious highway sections in North America. Such areas are then nicknamed, including Chalma Road at Chelsea Proving Grounds in Michigan, which imitates rough areas of Mexico.

Figure 7A and fig. S10 illustrate additional functionality of the device for potential long-term monitoring of sweat glucose and lactate levels over multiple days. The irreversible nature of the colorimetric assays limits them to a single-use mode, as the reagents cannot be recovered after reacting with sweat chloride and hydronium ion. The concentration range of sweat glucose varies among individuals and fluctuates depending on the blood glucose level. The blood glucose and, subsequently, sweat glucose concentration increases after consumption of food and then gradually stabilizes. Similarly, a previous report suggests correlation between sweat lactate and corresponding blood levels (22). The human trails aim to study these concentration fluctuations in blood and sweat and to explore possible correlations between the two. In the first set of studies, the subjects wear the device for two consecutive days and, on each day, execute a cycling exercise (15 to 20 min) in the morning in fasting state, followed by another cycling bout 20 min after consuming 150 g of sweetened drink and then again 2 hours after lunch in the evening. Separate measurements using commercial blood lactate (Lactate Plus; Nova Biomedical, MA) and blood glucose (Accu-Chek Nano Blood Glucose Meter, Roche Diabetes Care Inc.) meters capture blood lactate and glucose levels before and after each cycling bout, as points of comparison.

When it comes to properly storing food, most of us are making some colossal mistakes. Whether you have a terrible habit of overstocking your fridge or your cupboards are full of plastic storage containers, chances are you're committing some major food safety fouls when it comes to packing up last night's dinner.

Any clear or translucent material that transmits a high percentage of solar radiation is a candidate for solar food dryer glazing. Listed below are some of the possibilities.

A new artifact, freshly cut, is like a sponge: It collects molecules from the air, and this increases its mass slightly over time. The new artifacts used in this experiment are less than a year old and, therefore, in a stage of relatively rapid weight gain on the order of 7 micrograms (millionths of a gram) over six months. This might sound too tiny to matter, but even small changes—especially if they are unpredictable—can raise uncertainties in laboratory measurements.

The Ford Ranger spends days hooked up to a four-post shaker table to check for squeaks and rattles. This follows a run up the steep grades of the Davis Dam in Arizona and hot dusty terrain of the Australian Outback.

Thin, soft wearable sensors that intimately integrate with the human body offer unique capabilities in continuous, clinical quality recording of vital physiological parameters, with potential to transform modalities for health and performance monitoring (1–3). Recent advances in materials engineering (4), mechanics (5), and electronics (6) establish the foundations for stretchable (7, 8) and flexible (9) sensors that can conform to the complex, textured surface of skin. The results enable high precision sensing through an intimate skin interface, without irritation or discomfort. Much research in this area focuses on monitoring of physiologic and kinematic parameters related to body movements (10), oxygen saturation (11), biopotentials (12), surface pressure (13), temperature and thermal transport properties (14), stress/strain and elastic modulus (15), blood flow (16), and hydration (17). Comparatively less emphasis is on real-time and noninvasive measurements of chemical biomarkers (18–21). Recent reports demonstrate that the collection and chemical analysis of sweat can provide noninvasive means for tracking physiologically relevant electrolytes, metabolites, and small molecules (20, 21). Studies suggest that sweat lactate is an indicator of physical stress and can help to identify transitions from aerobic to anaerobic states (22–24) and that sweat glucose can serve, at least qualitatively, as a means for tracking blood glucose levels (25–27). Similarly, sweat chloride (28), pH (29), and average sweat rate (30) provide important insights into electrolyte balance, hydration status, and overall health. Each of these parameters can therefore separately define certain specific conditions of the human body. However, simultaneous analyses of all parameters can offer improved insights into the physiological state. In addition, the pH of sweat can affect the signals of enzyme-based electrochemical sensors. Hence, the integrated pH sensor can inform adjustments in interpreting the response of the enzymatic sensors to accurately quantify sweat glucose and lactate.

When are two nominally identical kilogram masses no longer identical? When each goes to a different place and adsorbs varying amounts of moisture and contaminants.

In the lab is a heat chamber that can be set to up to 110 degrees, and the humidity set between 10 and 90 percent. Inside the chamber, you can hop on one of the bikes or treadmills which will track your heart rate, core temperature, body mass, wattage, pace/speed and sweat rate. All of these factors are then used for sweat electrolyte and sodium balance tests, which can tell a person the amount of electrolytes he or she loses at a particular temperature, going a specific wattage, for a set amount of time.

But the expansion of polyurethane glue is a benefit only if the two surfaces are securely held together with screws, clamps or even tightly wrapped tape while the adhesive cures. Polyurethane glue expands to three or four times its initial thickness, said Danielle Guido, consumer affairs specialist for Gorilla Glue. “So if you don’t clamp it, it pushes the two surfaces apart.”