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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1945 25
1946 111
1947 138
1948 169
1949 134
1950 164
1951 196
1952 162
1953 221
1954 197
1955 205
1956 207
1957 217
1958 227
1959 221
1960 203
1961 211
1962 278
1963 471
1964 715
1965 575
1966 588
1967 774
1968 944
1969 941
1970 929
1971 958
1972 987
1973 947
1974 882
1975 785
1976 673
1977 613
1978 501
1979 590
1980 540
1981 576
1982 511
1983 531
1984 569
1985 559
1986 531
1987 425
1988 408
1989 444
1990 516
1991 526
1992 471
1993 500
1994 483
1995 480
1996 467
1997 585
1998 478
1999 501
2000 690
2001 1299
2002 1281
2003 1418
2004 1553
2005 1951
2006 2069
2007 2366
2008 2357
2009 2333
2010 2516
2011 2661
2012 2730
2013 3039
2014 3259
2015 3335
2016 3375
2017 3310
2018 3517
2019 2836
2020 305
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68,272 results
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Page 1
Nitrogen metabolism in photosynthetic bacteria wastewater treatment: A novel nitrogen transformation pathway.
Yang A, et al. Bioresour Technol 2019. PMID 31561156
Nitrogen removal from wastewater is a worldwide environmental problem. Photosynthetic bacteria (PSB) were reported to have a great potential in treating varieties of nitrogen-contaminated wastewater. ...Over 90% nitrogen removal efficiencies were obtained under suitable condition. 35 ~ 51% of removed nitrogen was transformed to N(2) and N(2)O. ...
Nitrogen removal from wastewater is a worldwide environmental problem. Photosynthetic bacteria (PSB) were reported to have a great po
Nitrogen and sulfur metabolisms of Pseudomonas sp. C27 under mixotrophic growth condition.
Guo H, et al. Bioresour Technol 2019. PMID 31561980
This study is the first to reveal the pathways of nitrogen and sulfur metabolisms, identifying a total of 47 proteins that are related to the nitrogen metabolism and seven proteins to the sulfur metabolism of strain C27 using iTRAQ and LC-MS/MS techniques. The proposed pathway of nitrogen metabolism for strain C27 from external nitrate to nitrogen gas and phosphate with a coupled ammonia cycle is based on the identified proteins, and suggests that nitrate was not essential for nitrogen metabolism and could be replaced by nitrite as the sole nitrogen source for C27....
This study is the first to reveal the pathways of nitrogen and sulfur metabolisms, identifying a total of 47 proteins that are relate …
The analysis of nitrogen load and simulation uncertainty using SWAT in a catchment with paddy field in China.
He Q, et al. Water Sci Technol 2019. PMID 31661459
Excessive load of nitrogen from anthropogenic sources is a threat to sustaining a healthy aquatic ecosystem. The difficulty in identifying the critical source areas (CSAs) of nitrogen load and apportioning the in-stream nitrogen to individual sources spatially and seasonally has made the Soil and Water Assessment Tool (SWAT) useful for analyzing nitrogen load at the catchment scale. However, the uncertainty of the nitrogen load simulated by SWAT has rarely been analyzed. The two simulations with the highest or the lowest PBIAS of total nitrogen (TN) load were proposed in this study to represent the range of the prediction uncertainty and therefore were used to generate the uncertainty of CSAs and nitrogen source apportionment. ...
Excessive load of nitrogen from anthropogenic sources is a threat to sustaining a healthy aquatic ecosystem. The difficulty in identi …
Evolution and regulation of nitrogen flux through compartmentalized metabolic networks in a marine diatom.
Smith SR, et al. Nat Commun 2019. PMID 31591397 Free PMC article.
Using a combination of transcriptomics, proteomics, metabolomics, fluxomics, and flux balance analysis to examine short-term shifts in nitrogen utilization in the model pennate diatom in Phaeodactylum tricornutum, we obtained a systems-level understanding of assimilation and intracellular distribution of nitrogen. Chloroplasts and mitochondria are energetically integrated at the critical intersection of carbon and nitrogen metabolism in diatoms. ...
Using a combination of transcriptomics, proteomics, metabolomics, fluxomics, and flux balance analysis to examine short-term shifts in ni
Nitrogen-fixing bacteria and Oxalis - evidence for a vertically inherited bacterial symbiosis.
Jooste M, et al. BMC Plant Biol 2019. PMID 31646970 Free PMC article.
BACKGROUND: Plant-endophyte symbioses often revolve around nitrogen metabolism, and involve varying degrees of intimacy. Although evidence for vertical inheritance of nitrogen-fixing endophytic bacteria is increasing, it is confined mostly to crop plants, and to date no such system has been reported for geophytes. ...Communities of nitrogen-fixing and plant growth-promoting Bacillus endophytes were found to associate with selected Oxalis hosts from nitrogen-deficient environments of the Cape. ...
BACKGROUND: Plant-endophyte symbioses often revolve around nitrogen metabolism, and involve varying degrees of intimacy. Although evi …
Nitrogen removal mechanism and microbial community changes of bioaugmentation subsurface wastewater infiltration system.
Jia L, et al. Bioresour Technol 2019. PMID 31557654
Limited nitrogen removal capacity (mainly nitrate, NO(3)(-)-N) remains a major challenge for subsurface wastewater infiltration system (SWIS). Two nitrogen-removing strains have been isolated from SWIS and inoculated to SWIS to investigate the effect of bioaugmentation on nitrogen removal performance and mechanism. ...
Limited nitrogen removal capacity (mainly nitrate, NO(3)(-)-N) remains a major challenge for subsurface wastewater infiltration syste …
[Simultaneous Nitrogen and Phosphorus Removal and Kinetics by the Heterotrophic Nitrifying Bacterium Acinetobacter junii NP1].
Yang L, et al. Huan Jing Ke Xue 2019. PMID 31854780 Chinese.
The heterotrophic nitrification process of strain NP1 was accompanied by simultaneous phosphorus accumulation, and the appropriate ratio of nitrogen to phosphorus was beneficial for the simultaneous removal of nitrogen and phosphorus. When the ratio of nitrogen to phosphorus was 5:1, the maximum ammonia nitrogen and phosphate removal rates reached 99.21% and 88.35%, respectively. ...
The heterotrophic nitrification process of strain NP1 was accompanied by simultaneous phosphorus accumulation, and the appropriate ratio of …
Nitrogen containing functional groups of biochar: An overview.
Leng L, et al. Bioresour Technol 2020 - Review. PMID 31690478
Nitrogen containing functional groups of biochar have a wide range of applications, such as adsorption of pollutants, catalysis, and energy storage. ...However, there is no review available specifically on the development of biochar technologies concerning nitrogen-containing functional groups. ...
Nitrogen containing functional groups of biochar have a wide range of applications, such as adsorption of pollutants, catalysis, and
Bacterial community structure and response to nitrogen amendments in Lake Shenandoah (VA, USA).
Reynoso G, et al. Water Sci Technol 2019. PMID 31661447
To evaluate the impact of nitrogen loading on the microbial community structure of shallow freshwater lakes, water samples collected from Lake Shenandoah (Virginia, USA) were incubated with two concentrations of either ammonium, nitrate, or urea as a nitrogen source. The potential impact of these nitrogen compounds on the bacterial community structure was assessed via 16S rRNA amplicon sequencing. ...
To evaluate the impact of nitrogen loading on the microbial community structure of shallow freshwater lakes, water samples collected …
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