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Construction of electronic cigarettes. An electronic cigarette is a handheld battery -powered vaporizer that simulates smoking, but without tobacco combustion. [ 1] E-cigarette components include a mouthpiece (drip tip [ 2] ), a cartridge (liquid storage area), a heating element / atomizer, a microprocessor, a battery, and some of them have an ...
Vaporizer (inhalation device) A vaporizer or vaporiser, colloquially known as a vape, is a device used to vaporize substances for inhalation. Plant substances can be used, commonly cannabis, tobacco, or other herbs or blends of essential oil. [ 1 ] However, they are most commonly filled with a combination propylene glycol, glycerin, and drugs ...
The dart, usually .50 caliber (12.7 mm) [citation needed], is a ballistic syringe loaded with a solution and tipped with a hypodermic needle. The dart is propelled from the gun by compressed gas, and it is stabilized in flight by a tailpiece consisting of a tuft of fibrous material. The needle may be plain or collared, with a barb-like ring to ...
The DART spacecraft was the first spacecraft to use a new type of high-gain communication antenna, a Spiral Radial Line Slot Array (RLSA). The circularly-polarized antenna operated at the X-band NASA Deep Space Network (NASA DSN) frequencies of 7.2 and 8.4 GHz , and had a gain of 29.8 dBi on downlink and 23.6 dBi on uplink.
Diffusing Alpha-emitters Radiation Therapy or DaRT is an alpha-particle -based radiation therapy for the treatment of solid tumors. [1] [2] This therapy was developed at Tel Aviv University in Israel, by Professors Itzhak Kelson and Yona Keisari. The treatment is delivered by the intratumoral insertion of metal tubes called “seeds”, which ...
A Nevada teenager was hospitalized after his vape pen exploded in his mouth, leaving him with injuries consistent with "a close-range gunshot wound." Austin Adams, now 18, ...
Arrow poisons are used to poison arrow heads or darts for the purposes of hunting and warfare. They have been used by indigenous peoples worldwide and are still in use in areas of South America, Africa and Asia. Notable examples are the poisons secreted from the skin of the poison dart frog, and curare (or 'ampi'), a general term for a range of ...
In mass spectrometry, direct analysis in real time ( DART) is an ion source that produces electronically or vibronically excited-state species from gases such as helium, argon, or nitrogen that ionize atmospheric molecules or dopant molecules. The ions generated from atmospheric or dopant molecules undergo ion-molecule reactions with the sample ...