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Wenru Liu et al.
Chemosphere, 258, 127290-127290 (2020-06-15)
Biomass segregation between granules/biofilm and flocs is widespread in anammox-based processes. The segregation of biomass allows for easy control of processes stability. The goal of this study is to understand the biomass segregation in two anoxic anammox reactors respectively operated
Andrea Penoni et al.
Journal of the American Chemical Society, 131(2), 653-661 (2008-12-20)
The thermal reaction between nitrosoarenes and alkynes produces N-hydroxyindoles as the major products. The mechanism of these novel reactions has been probed using a combination of experimental and computational methods. The reaction of nitrosobenzene (NB) with an excess of phenyl
Ming Zeng et al.
Environmental science and pollution research international, 27(28), 35381-35391 (2020-07-01)
Single-stage autotrophic nitrogen removal offers advantages of low energy and carbon consumptions. Based on previous work about a novel composite membrane aerated biofilm (CMAB), two microbial entrapping patterns (mixed and stratified patterns) were evaluated for their applicability to artificially regulate
Robert E Kyne et al.
Organic letters, 12(17), 3796-3799 (2010-08-07)
Addition of nitrosobenzene to pinacol allylboronates leads to oxidation of the organoboron with concomitant rearrangement of the substrate alkene. This reaction appears to proceed by allylboration of the nitroso group in analogy to carbonyl and imine allylation reactions. Remarkably, the
Mohammad S Askari et al.
Chemical communications (Cambridge, England), 47(28), 8055-8057 (2011-06-18)
The reaction of nitrosobenzene with copper(I) complexes of a tetradentate ligand led to two novel species that are best described as copper(II) complexes of an O-bonded nitrosobenzyl radical anion, in either the singlet or the triplet spin-state. Both states were
Xiang Li et al.
Bioresource technology, 281, 303-308 (2019-03-04)
For municipal wastewater with low temperature and ammonium, conventional oxygen-limited have difficulty achieving long-term stable inhibition of nitrite oxidizing bacteria (NOB) and stable nitritation. So a partial nitrification-anaerobic ammonium oxidation integrated reactor with independent partitions was used to investigate the
Grant C Wallace et al.
Environmental science. Processes & impacts, 19(5), 758-767 (2017-05-04)
Electron donating capacity (EDC) values were determined for a set of pore water samples collected from the sediments of four separate wetlands in the Cottonwood Lakes Study Area in Jamestown, ND by mediated electrochemical analysis, reaction with substituted nitro(so)benzenes, and
Joshua N Payette et al.
Journal of the American Chemical Society, 130(37), 12276-12278 (2008-08-30)
While bond formation processes have traditionally garnered the attention of the chemical community, methods facilitating bond breaking remain relatively undeveloped. We report a novel, transition-metal-free oxidative C-C bond cleavage process for a broad range of ester and dicarbonyl compounds involving
Karol Trojanowicz et al.
Environmental technology, 42(7), 1023-1037 (2019-09-03)
An explanation of possible mechanism of efficient PN/A in hybrid bioreactors was presented. The bottleneck process is nitritation. Surplus nitrite production by ammonium oxidizing bacteria (AOB) is required for assuring the activity of anammox bacteria and eliminating nitrite oxidizing bacteria
Long Zhao et al.
The journal of physical chemistry letters, 9(10), 2620-2626 (2018-05-03)
The formation of the simplest polycyclic aromatic hydrocarbon (PAH), naphthalene (C10H8), was explored in a high-temperature chemical reactor under combustion-like conditions in the phenyl (C6H5)-vinylacetylene (C4H4) system. The products were probed utilizing tunable vacuum ultraviolet light by scanning the photoionization
Long Zhao et al.
Angewandte Chemie (International ed. in English), 58(48), 17442-17450 (2019-09-05)
Polycyclic aromatic hydrocarbons (PAHs) represent the link between resonance-stabilized free radicals and carbonaceous nanoparticles generated in incomplete combustion processes and in circumstellar envelopes of carbon rich asymptotic giant branch (AGB) stars. Although these PAHs resemble building blocks of complex carbonaceous
Jui-Hung Yen et al.
Cells, 9(4) (2020-04-09)
Differentiation therapy is an alternative strategy used to induce the differentiation of blast cells toward mature cells and to inhibit tumor cell proliferation for cancer treatment. Nobiletin (NOB), a polymethoxyflavone phytochemical, is present abundantly in citrus peels and has been
Pei-Yi Chen et al.
Journal of agricultural and food chemistry, 66(51), 13423-13434 (2018-12-07)
Nobiletin, a dietary citrus flavonoid, has been reported to possess several biological activities such as antioxidant, anti-inflammatory, and anticancer properties. The aim of this study was to investigate the antileukemic effects of nobiletin and its underlying mechanisms on human acute
Jialin Li et al.
Chemosphere, 227, 26-33 (2019-04-15)
The partial nitritation-anammox (PNA) process is the most promising technique to treat municipal sewage; however, nitrite oxidizing bacteria (NOB) are a hindrance to achieve PNA. This study investigated the effects of selectively discharging flocs (<200 μm) to washout NOB in a
Asuman Deveci Ozkan et al.
Immunopharmacology and immunotoxicology, 42(2), 93-100 (2020-02-13)
Background: Toll-like receptors (TLRs) are often expressed in natural immune cells as well as in tumor cells. TLR4 exhibits both tumor promoting and tumor-suppressing roles and higher TLR9 expression is an important marker of poor prognosis in prostate cancer (PCa).
Alexandre Lemire et al.
The Journal of organic chemistry, 70(6), 2368-2371 (2005-03-12)
[reaction: see text] A new methodology for the stereoselective synthesis of trans-2-substituted 3-amino-1,2,3,6-tetrahydropyridines is reported. The preparation of these 3-aminopiperidines is achieved by cycloaddition of nitrosobenzene with 2-substituted 1,2-dihydropyridines followed by chemoselective reduction of the cycloadducts. Enantioenriched 1,2-dihydropyridine derivatives are
Masaaki Kitajima et al.
The Science of the total environment, 766, 142314-142314 (2020-10-21)
Collecting biofilm samples from drinking water distribution systems (DWDSs) is challenging due to limited access to the pipes during regular operations. We report here the analysis of microbial communities in biofilm and water samples collected from sensors installed in a
Siping Wei et al.
Organic & biomolecular chemistry, 7(20), 4241-4247 (2009-10-02)
The reactivity and catalytic performance of 2-ethylpyrido[1,2-c][1,2,4]-triazol-3-ylidene 6 have been comprehensively investigated. The carbene 6 has shown unusual properties owing to the effect of the pyrido-annulation. While formohydrazide 8 and hydrazine 9 are obtained via the destruction of the triazole
Aldrichimica Acta, 12, 23-23 (1979)
Cancan Jiang et al.
Water research, 161, 590-600 (2019-06-27)
The incomplete denitrification due to insufficient carbon resource in the wastewater treatment plants (WWTPs) resulted in low nitrogen removal efficiency, which has become a widespread problem in China and all around the world. Reducing the requirement of carbon source by
Yujiro Hayashi et al.
The Journal of organic chemistry, 69(18), 5966-5973 (2004-09-18)
The direct proline-catalyzed asymmetric alpha-aminoxylation of aldehydes and ketones has been developed using nitrosobenzene as an oxygen source, affording alpha-anilinoxy-aldehydes and -ketones with excellent enantioselectivity. Reaction conditions have been optimized, and low temperature (-20 degrees C) was found to be
Christopher H Switzer et al.
Journal of inorganic biochemistry, 118, 128-133 (2012-10-31)
The oxonitrate(1-) anion (NO(-)), the one-electron reduction product of nitric oxide and conjugate base of HNO, has not been synthesized and isolated due to the inherent reactivity of this anion. The large scale synthesis and characterization of a stable NO(-)
Jun Wu
Environmental science and pollution research international, 24(33), 25839-25848 (2017-09-25)
The low ammonium concentration, low temperature, presence of organic matter, and large variation of influent ammonium load pose serious challenges for the application of PN/AMX (partial nitrification-anammox) reactor in the mainstream wastewater treatment. Previous mathematical simulation studies of PN/AMX granule
Wenlin Jia et al.
Bioresource technology, 259, 214-220 (2018-03-21)
Static magnetic field (SMF) with the intensity of 15 mT was applied during partial nitrification (PN) process to evaluate the impacts on nitrogen transformation and microbial characteristics. Results showed that the startup period of PN process at ambient temperature was markedly
Ernst M Bomhard et al.
Critical reviews in toxicology, 35(10), 783-835 (2006-02-14)
Aniline (in the form of its hydrochloride) has been shown to induce a rather rare spectrum of tumors in the spleen of Fischer 344 rats. The dose levels necessary for this carcinogenic activity were in a range where also massive
Guoyuan Qi et al.
Biochimica et biophysica acta, 1863(6), 549-562 (2018-03-05)
Circadian clock plays a principal role in orchestrating our daily physiology and metabolism, and their perturbation can evoke metabolic diseases such as fatty liver and insulin resistance. Nobiletin (NOB) has been demonstrated to possess antitumor and neuroprotective activities. The objective
Zhaoming Zheng et al.
Bioresource technology, 283, 213-220 (2019-03-26)
The simultaneous partial nitrification, anammox and denitrification (SNAD) process for treating mainstream wastewater was investigated under different intermittent aeration modes. By controlling the aeration time of 20, 60 and 180 min during the intermittent modes, the oxygen concentration remained 3.50, 1.45
Chemical Reviews, 94, 1621-1621 (1994)
Metalloenzymes: Natural product nitrosation.
Roland D Kersten et al.
Nature chemical biology, 6(9), 636-637 (2010-08-20)
Yunjie Ma et al.
Environmental science & technology, 51(11), 6146-6155 (2017-04-28)
Autotrophic ammonium oxidation in membrane-aerated biofilm reactors (MABRs) can make treatment of ammonium-rich wastewaters more energy-efficient, especially within the context of short-cut ammonium removal. The challenge is to exclusively enrich ammonium-oxidizing bacteria (AOB). To achieve nitritation, strategies to suppress nitrite-oxidizing
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