Technical Library | 2021-02-17 22:41:48.0
This review provides an overview of electrochemical sensors for nitrogen species, especially, ammonium, nitrate, and nitrite. Due to the extensive anthropogenic activities, the concentration of nitrogen species has been dramatically increased in the environment. In particular, fertilizers containing ammonium and nitrate have been extensively used in agriculture where as nitrite-included additives or preservatives have been used in food industry. Since excessive nitrogen species have an adverse effect to environment and human health such as eutrophication and methemoglobinemia (blue baby syndrome), efforts have been made to develop efficient monitoring methods. On that account, the U.S Environmental Protection Agency (EPA) established the maximum contaminant level (MCL) for nitrate and nitrite to be 10mg/L nitrate-N and 1mg/L nitrite-N in drinking water, respectively. Typical analytical methods for nitrogen species are chromatography or spectrometry. However, these methods require expensive instrumentations, skilled operator, and considerable sample pretreatment and analysis time. As an alternative approach, electrochemical sensors have been explored to monitor nitrogen species owing to its simplicity, superior sensitivity, versatility, rapidity, field applicability, and selectivity. In this review, electrochemical based detection methods for nitrogen species especially ammonium, nitrate and nitrite are systematically discussed, including the fundamentals of electrochemical techniques, sensing mechanisms, and the performance of each sensor. doi.org/10.1016/j.snr.2020.100022
Technical Library | 2023-06-02 17:37:43.0
This presentation of Nano Dimension Ltd. (the"Company") contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act and other securities laws. Words such as "expects," "anticipates, " "intends, " "plans, " "believes, " "seeks, " "estimates" and similar expressions or variations of such words are intended to identify forward-looking statements. For example, the Company is using forward-looking statements when it discuss the potential of its products, strategic growth plan, its business plan and investment plans, the size fits addressable market, market growth, and expected recurring revenue growth. Forward-looking statements are no historical facts, and are based upon management's current expectations, beliefs and projections, many of which, by their nature, are inherently uncertain. Such expectations, beliefs and projections are expressed in good faith. However, there can be assurance that management's expectations, beliefs and projections will be achieved, and actual results may differ materially from what is expressed in or indicated by the forward-looking statements. Forward-looking statements are subject to risks and uncertainties that could cause actual performance or results to differ materially from those expressed in the forward-looking statements. For a more detailed description of the risks and uncertainties affecting the Company, reference is made to the Company's reports filed from time to time with the Securities and Exchange Commission ("SEC"), including, but not limited to, the risks detailed in the Company's annual report for the year ended December 31st, 2020, filed with the SEC. Forward-looking statements speak only as of the date the statements are made. The Company assumes no obligation to update forward-looking statements to reflect actual results, subsequent events or circumstances, changes in assumptions or changes in other factors affecting forward-looking information except to the extent required by applicable securities laws. If the Company does update one or more forward-looking statements, no inference should be drawn that the Company will make additional updates with respect thereto or with respect to other forward-looking statements.
Technical Library | 2020-03-08 11:35:53.0
A sample for Larry Bush's Maintenance Policies and Procedures - 2nd Edition (A 415-page book in PDF format. Those who purchase also receive 150 support files in editable format to customize and use as samples and templates.)
Technical Library | 2020-03-08 11:47:14.0
Lubrication Grease, use the right one for the job. Insight into lubrication classification. selection and application of greases. Compare the properties of greases and check those used in your equipment that are suited to the service.
Technical Library | 2020-03-24 23:34:07.0
Installing time : November 24 to December 2 ,2019 Participants： Customer from (Elaraby , Egypt) Service engineer：Peter (1 Click SMT)
Technical Library | 2020-04-29 03:25:11.0
1CLICKSMT has recently installed a odd form component inserting and wave soldering line for a security products manufacturer.
Technical Library | 2020-05-21 06:58:35.0
1CLICKSMT has recently installed a conformal coating line for a photoelectric devices manufacturer in Thailand.
Technical Library | 2020-07-15 18:49:03.0
Via Filling • Through Hole Vias - IPC-4761 – Plugging – Filling – Filled & Capped • MicroviaFilling and Stacked Vias
Technical Library | 2020-02-05 18:20:06.0
Consortium Projects - Thermal Cycling Reliability Consortium projects allow for joint research to investigate the reliability of multiple solder alloys under a variety of environmental stress conditions. Project jointly sponsored by iNEMI and HDP User Group and including CALCE and Universal consortium currently assessing 15 third-generation solder alloys..
Technical Library | 2020-02-18 09:56:24.0
Glob Top, Dam and Fill & Flit Chip Underfill To protect PCBs from damaging outside influences, they are coated with a thin layer of casting resin or protective finish during the conformal coating process. In addition to sealing the entire circuit board, it is possible to pot only sections or individual components on the substrate. Different methods ranging from "glob top" to "dam and fill" and "flip chip underfill" have been developed for this purpose.
