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Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir

Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 334-340 doi: 10.1007/s11783-009-0039-y

Abstract: The variation of TN/TP ratio was caused by a variation in TN rather than in TP when TN/TP<22.When TN/TP ≥ 22, the variation of TP affected the TN/TP ratio more significantly than TN.

Keywords： Three Gorges Reservoir     eutrophication     nitrogen     phosphorus     seasonal variation     chlorophyll    

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Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 106-116 doi: 10.1007/s11783-012-0474-z

Abstract: We assessed the spatial and seasonal variation in concentrations of total nitrogen and different nitrogenExamination of seasonal variation showed that there was a significant inverse relationship between nitrate

Keywords： nitrogen concentration     spatial and seasonal variation     stable nitrogen isotope     urban ecosystem     source    

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Assessment of temporal and spatial variations in water quality using multivariate statistical methods

Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 895-904 doi: 10.1007/s11783-014-0736-z

Abstract: This study evaluated the temporal and spatial variations of water quality data sets for the Xin'anjiangSecond and Third Period) and the eight sampling sites into three groups (Groups 1, 2 and 3) based on seasonaltemperature, electricity conductivity, total nitrogen, chemical oxygen demand and total phosphorus) for spatialvariation analysis, with 80.56% correct assignment.

Keywords： Xin'anjiang River     multivariable statistical analysis     temporal variation     spatial variation     water quality    

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Spatial and seasonal variations in bacterial communities of the Yellow Sea by T-RFLP analysis

Hongyuan WANG, Xiaolu JIANG, Ya HE, Huashi GUAN

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 194-199 doi: 10.1007/s11783-009-0018-3

Abstract: sandy shore, mud flat shore, and artificial harbor) at the Yellow Sea were chosen to investigate the spatialand seasonal variations in bacterial communities.The MDA analysis results of T-RFLP profiles coming from I and I both exhibited a significant seasonalcommunity shift for bacteria and a relatively low spatial variation among the four locations.

Keywords： terminal restriction fragment length polymorphism (T-RFLP)     bacterial community structure     marine microbial diversity     HhaI     MspI    

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REGIONAL ASSESSMENT OF SOIL NITROGEN MINERALIZATION IN DIVERSE CROPLAND OF A REPRESENTATIVE INTENSIVE AGRICULTURAL AREA

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 530-540 doi: 10.15302/J-FASE-2023515

Abstract: soil Nmin in cropland and its affecting factors are lacking, especially in relation to variationgreater understanding of the response of soil Nmin among cropland fields related to spatialvariation.

Keywords： cropland     gross nitrification rate     regulatory factors     soil nitrogen mineralization     spatial variation    

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Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 298-301 doi: 10.1007/s11708-008-0053-y

Abstract: A simulation was performed, which concerned the feasibility of seasonal underground thermal energy storage
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Reliability assessment of three-dimensional bearing capacity of shallow foundation using fuzzy set theory

Rajarshi PRAMANIK, Dilip Kumar BAIDYA, Nirjhar DHANG

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 478-489 doi: 10.1007/s11709-021-0698-8

Abstract: The spatial variability of the soil is incorporated for both isotropic and anisotropic fields, whichThe effect of the coefficient of variation of the friction angle of the soil on the probability of failurescale of fluctuation on the probability of failure is investigated, and the necessity for considering spatial

Keywords： finite element method     square footing     reliability analysis     fuzzy set theory     coefficient of variation     spatial    

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Numerical simulation of underground seasonal cold energy storage for a 10 MW solar thermal power plant

Zulkarnain ABBAS, Yong LI, Ruzhu WANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 328-344 doi: 10.1007/s11708-020-0676-1

Abstract: This paper aims to explore an efficient, cost-effective, and water-saving seasonal cold energy storageThe proposed seasonal cooling mechanism is designed for the areas under typical weather conditions toThe proposed seasonal cooling system is capable of enhancing the efficiency of a solar thermal power

Keywords： seasonal cold energy storage     borehole heat exchangers     typical meteorological data     TRNSYS     condenser cooling    

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Seasonal and treatment-process variations in invertebrates in drinking water treatment plants

Zhiling Wu, Xianchun Tang, Hongbin Chen

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1354-6

Abstract: Abstract • Seasonal and treatment-process variations in invertebrates in a DWTP were analyzed. • Theeach treatment stage in a drinking water treatment plant between May 2015 and April 2016 and analyzed seasonal

Keywords： Invertebrates     Drinking water     Seasonal variations     Treatment process    

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Temperature variation of concrete box girder bridge

Jian WANG, Zhi FANG,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 407-413 doi: 10.1007/s11709-009-0053-y

Abstract: On the basis of theoretical analysis and measurement on site, the temperature gradients and its variation

Keywords： temperature     transfer     correlation     radiation     variation    

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Assessment of liver volume variation to evaluate liver function

Cong Tong, Xinsen Xu, Chang Liu, Tianzheng Zhang, Kai Qu

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 421-427 doi: 10.1007/s11684-012-0223-5

Abstract:

In order to assess the value of liver volumetry in cirrhosis and acute liver failure (ALF) patients, we explored the correlation between hepatic volume and severity of the hepatic diseases. The clinical data of 48 cirrhosis patients with 60 normal controls and 39 ALF patients were collected. Computed tomography-derived liver volume (CTLV) and body surface area (BSA) of normal controls were calculated to get a regression formula for standard liver volume (SLV) and BSA. Then CTLV and SLV of all patients were calculated and grouped by Child-Turcotte-Pugh classification for cirrhosis patients and assigned according to prognosis of ALF patients for further comparison. It turned out that the mean liver volume of the control group was 1 058±337 cm3. SLV was correlated with BSA according to the regression formula. The hepatic volume of cirrhosis patients in Child A, B level was not reduced, but in Child C level it was significantly reduced with the lowest liver volume index (CTLV/SLV). Likewise, in the death group of ALF patients, the volume index was significantly lower than that of the survival group. Based on volumetric study, we proposed an ROC (receiver operating characteristic) analysis to predict the prognosis of ALF patients that CTLV/SLV<83.9% indicates a poor prognosis. In conclusion, the CTLV/SLV ratio, which reflects liver volume variations, correlates well with the liver function and progression of cirrhosis and ALF. It is also a very useful marker for predicting the prognosis of ALF.

Keywords： liver volume variation     cirrhosis     acute liver failure (ALF)    

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Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 94-98

Abstract:

For several reasons, the north area of the Dianchi Lake is prolific of blue-green alga. In this paper, the dynamic biomass of alga was investigated. Both of the concentrations of N and P in original water and in filtered water were also be monitored. The aim of the study is to figure out the alga's influence on the concentrations of N and P in the water, and to analyze the relationship between them by using the method of ecological stoichiometry. It is disclosed that from April to November is the main stage of alga blooming. Especially, alga blooms seriously and is uncontrolled from May to September. By data analysis, we find that the concentrations of N and P vary conforming to the dynamic of the biomass of alga, and there is positive correlation-ship between them. The correlation coefficient between the concentrations of N in water and alga's biomass is 0.955, between the concentrations of P in water and alga's biomass is 0.952. By taken the method of stoichiometry analysis, we find both the N∶P ratios of alga and water are not constant, and both of them have no significant ecological stoichiometry of the N∶P ratio. We also made correlation-ship analysis between the N∶P ratio of water and biomass of alga. The correlation-ship between them is 0.308, which illustrats that the biomass of alga is not related to the N∶P ratio of water. Thus we can declare that there is only one most efficient way to control blue-green alga booming, to reduce the concentration of N and P in water of eutrophic lakes.

Keywords： the Dianchi Lake     blue-green alga     the N∶P ratio     variation     ecological stoichiometry    

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Total phosphorus concentrations in surface water of typical agro- and forest ecosystems in China, 2004–2010

Juan XIE,Xinyu ZHANG,Zhiwei XU,Guofu YUAN,Xinzhai TANG,Xiaomin SUN,D.J. BALLANTINE

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 561-569 doi: 10.1007/s11783-013-0601-5

Abstract: the northern and north-western areas for both still and flowing surface water, however no distinct spatial

Keywords： Chinese Ecosystem Research Network (CERN)     total phosphorus (TP)     surface water     ecosystem type     spatialvariation    

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arsenic trioxide on proliferation and apoptosis of U266 cells and its relationship with the expression variation

ZHAN Rong, YU Qinghong, HUANG Haobo

Frontiers of Medicine 2008, Volume 2, Issue 4,   Pages 356-360 doi: 10.1007/s11684-008-0068-0

Abstract: the proliferation and apoptosis of myeloma cell line U266 and its relationship with the expression variation

Keywords： VEGF expression     expression variation     culture supernatant     labeling     concentration    

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Temporal variation of heavy metal pollution in urban stormwater runoff

Wen LI, Zhenyao SHEN, Tian TIAN, Ruimin LIU, Jiali QIU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 692-700 doi: 10.1007/s11783-012-0444-5

Abstract: surface) had significant effects on the strengths of the first flush effects, accounting for 72.9% of the variation

Keywords： urban stormwater     heavy metal pollution     temporal variation     event mean concentration     first flush effect    

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Title Author Date Type Operation

Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir

Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,

Journal Article

Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Journal Article

Assessment of temporal and spatial variations in water quality using multivariate statistical methods

Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG

Journal Article

Spatial and seasonal variations in bacterial communities of the Yellow Sea by T-RFLP analysis

Hongyuan WANG, Xiaolu JIANG, Ya HE, Huashi GUAN

Journal Article

REGIONAL ASSESSMENT OF SOIL NITROGEN MINERALIZATION IN DIVERSE CROPLAND OF A REPRESENTATIVE INTENSIVE AGRICULTURAL AREA

Journal Article

Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Journal Article

Reliability assessment of three-dimensional bearing capacity of shallow foundation using fuzzy set theory

Rajarshi PRAMANIK, Dilip Kumar BAIDYA, Nirjhar DHANG

Journal Article

Numerical simulation of underground seasonal cold energy storage for a 10 MW solar thermal power plant

Zulkarnain ABBAS, Yong LI, Ruzhu WANG

Journal Article

Seasonal and treatment-process variations in invertebrates in drinking water treatment plants

Zhiling Wu, Xianchun Tang, Hongbin Chen

Journal Article

Temperature variation of concrete box girder bridge

Jian WANG, Zhi FANG,

Journal Article

Assessment of liver volume variation to evaluate liver function

Cong Tong, Xinsen Xu, Chang Liu, Tianzheng Zhang, Kai Qu

Journal Article

Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Journal Article

Total phosphorus concentrations in surface water of typical agro- and forest ecosystems in China, 2004–2010

Juan XIE,Xinyu ZHANG,Zhiwei XU,Guofu YUAN,Xinzhai TANG,Xiaomin SUN,D.J. BALLANTINE

Journal Article

arsenic trioxide on proliferation and apoptosis of U266 cells and its relationship with the expression variation

ZHAN Rong, YU Qinghong, HUANG Haobo

Journal Article

Temporal variation of heavy metal pollution in urban stormwater runoff

Wen LI, Zhenyao SHEN, Tian TIAN, Ruimin LIU, Jiali QIU

Journal Article