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Chemical routes to top-down nanofabrication
Chemical Society Reviews, 2013In fabricating materials at the nanometer scale, nanotechnologists typically employ two general strategies: bottom-up and top-down. While the bottom-up approach constructs nanomaterials from basic building blocks like atoms or molecules, the top-down approach produces nanostructures by deconstructing larger materials with the use of lithographic tools (
Hai-Dong, Yu +3 more
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Chemical Topping Burley Tobacco
2018The act of topping tobacco (Nicotiana tabacum L.) involves the removal of the terminal bud or inflorescence of the tobacco plant. This practice ordinarily is accomplished by manually removing the top of each tobacco plant in an entire field which is labor intensive and costly.
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Biorefineries for the production of top building block chemicals and their derivatives
Metabolic Engineering, 2015Due to the growing concerns on the climate change and sustainability on petrochemical resources, DOE selected and announced the bio-based top 12 building blocks and discussed the needs for developing biorefinery technologies to replace the current petroleum based industry in 2004.
Sol Choi +3 more
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Specialty firms top chemical profitability
Chemical & Engineering News Archive, 1982Specialty chemical firms' profitability generally declined last year, but they continued to dominate C&EN's rankings of profitability measures among U.S. chemical companies. However, there are some changes in the profitability lineup for 1981. No longer do the small mineral and fertilizer companies head up all of the rankings.
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Hindered asymmetric top states for chemical reactions
The Journal of Chemical Physics, 1975A computational method for development of hindered asymmetric top rotational wavefunctions for atom–diatom chemical reactions is presented. The external rotation of the triatomic system is that of a nonrigid asymmetric top that is in no way hindered.
Susan H. Harms, Robert E. Wyatt
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TOP 50 U.S. Chemical Producers
Chemical & Engineering News Archive, 2004OWING TO FLAT SALES GROWTH AND a paucity of merger and acquisition activity, C&EN's 2003 survey of the top US.
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A Top Down Chemically Embodied Artificial Life Computation
The 2020 Conference on Artificial Life, 2020In my laboratory we are interested in creating the conditions that allow an artificial life form to emerge. But how do we know when our chemical system is really on the path to life?
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