Results 41 to 50 of about 15,630 (267)
Determination of Nitrate Nitrogen in Nitrates and Fertilizers. [PDF]
Journal of Industrial & Engineering Chemistry, 1920 n ...
openaire +2 more sources
Advanced Engineering Materials, EarlyView.The microstructure of Cr‐rich Cr‐Si‐alloys is maintained by alloying with Ge, Pt, and Mo. The effects of these elements on A15‐phase fraction, partitioning, microstructural stability, grain size, and hardness are combinable. Molybdenum is found to be the most promising alloying element for microstructural stability during high‐temperature exposure.
Anke Silvia Ulrich +6 more
wiley +1 more source
Engineered P450 biocatalysts show improved activity and regio-promiscuity in aromatic nitration
Scientific Reports, 2017 Nitroaromatics are among the most important and commonly used chemicals but their production often suffers from multiple unsolved challenges. We have previously described the development of biocatalytic nitration processes driven by an engineered P450 ...
Ran Zuo +6 more
doaj +1 more source
The Role of Specific Ion Effects in Ion Transport: The Case of Nitrate and Thiocyanate [PDF]
J. Phys. Chem. C 2020, 124, 1, 573-581, 2019 The selective transport of trivalent rare earth metals from aqueous to organic environments with the help of amphiphilic "extractants" is an industrially important process. When the amphiphilic extractant is positively charged or neutral, the coextracted background anions are not only necessary for charge balance but also have a large impact on ...
arxiv +1 more source
Advanced Engineering Materials, EarlyView.The authors explore thermally initiated diazonium chemical surface modification as a means of improving the mechanical performance of milled carbon fibers in epoxy matrix systems at varying loadings by weight. They report significant improvements at <1% w/w loading through examination of flexural and tensile strength and modulus.
Ben Newman +4 more
wiley +1 more source
SINTESIS 6-NITRO VERATRALDEHID (3,4-DIMETOKSI-6-NITRO BENZALDEHID) DARI VANILIN DENGAN HNO3 DAN CAMPURAN HNO3-H2SO4 [PDF]
Molekul, 2009 The synthesis of 6-nitro veratraldehyde from vanillin was used HNO3 and a mixture of HNO3 and H2SO4. The reaction steps were (I) methylation of vanillin and (2) nitration of the methylation product.
Undri Rastuti, Jumina, Sabirin Matsjeh
doaj
Frontiers in Immunology, 2018 CXCL12 is a chemotactic cytokine that attracts many different cell types for homeostasis and during inflammation. Under stress conditions, macrophages and granulocytes produce factors such as peroxynitrite as a consequence of their oxidative response ...
Rik Janssens +19 more
doaj +1 more source
Hybrid Framework Materials: Next‐Generation Engineering Materials
Advanced Engineering Materials, EarlyView.Hybrid organic–inorganic materials merge the unique properties of organic and inorganic compounds, enabling applications in optoelectronics, gas storage, and catalysis. This review explores metal‐organic frameworks, hybrid organic–inorganic perovskites, and the emerging field of hybrid glasses, emphasizing their structures, functionalities, and ...
Jay McCarron +2 more
wiley +1 more source
Metal- and acid-free, TBN-mediated direct CH nitration of arenes
Journal of Saudi Chemical Society, 2019 A metal-free, acid-free, direct and eco-friendly nitration methodology has been developed. A tert-butyl nitrite efficiently promotes the direct CH nitration of electron-rich arenes with good to excellent yields and regioselectivities.
Guangqiang Xu +4 more
doaj
Eleven-year, 22-year and ~90-year solar cycles discovered in nitrate concentrations in a Dome Fuji (Antarctica) ice core [PDF]
arXiv, 2022 Ice cores are known to yield information about astronomical phenomena as well as information about past climate. We report time series analyses of annually resolved nitrate variations in an ice core, drilled at the Dome Fuji station in East Antarctica, corresponding to the period from CE 1610 to 1904.
arxiv