impacts of excessive phosphorus in water bodies

... a series of effect of sea level rise, water reduction and increasing demand of water users is expected to be more serious in the future Salinity profile was simulated by the couple of HD and ... infrastructure in low-lying areas; and (5) Increased pollution of the aquatic environment in the coastal zone and salinity intrusion of the Huong River lead to water scarcity This in turn results in conflicts ... high risk of flooding during wet season Additionally, salinity intrusion is another threat during the dry season, especially in low-lying areas This may lead to a drop in food yields which in turn...

Ngày tải lên: 05/03/2014, 16:20

... significant increase in rainfall in wet season resulting in an increase in river flow By contrast, the decreasing trend of river flow in dry season is a consequence of the decline of rainfall and increase ... infrastructure in low-lying areas; and (5) Increased pollution of the aquatic environment in the coastal zone and salinity intrusion of the Huong River lead to water scarcity This in turn results in conflicts ... a series of effect of sea level rise, water reduction and increasing demand of water users is expected to be more serious in the future Salinity profile was simulated by the couple of HD and...

Ngày tải lên: 20/02/2017, 22:21

... focused on the impacts of shrimp farming on the salinisation of the soil and contamination of ground water since it encroaches on agriculture and the use of freshwater for farming It is argued ... intensive farmer in Vinh Ha, stated: None of us has participated in a specific training for disease prevention and treatment Some of us joined general training only Most of the training was just based ... productivity of fishing in commune went down Findings from group discussion shown that 224 of Con in Ba Con area in Vinh Ha have been completely converted into shrimp farms and 80% of lagoon water surface...

Ngày tải lên: 02/11/2012, 10:15

... adjustment of the pH of the solution was done using 1.0N NaOH and 1.0N H2SO4 The effect of the initial pH of the solution was evaluated using pH values of 3, 7, 5.8 and 10 For the effect of initial ... obtained, maintaining the PCB/hydrogen peroxide ratio in the solution in all the experimental runs - 11 - Journal of Water and Environment Technology, Vol.3, No.1, 2005 In order to verify the main ... dechlorination occurring in the early stages of the reaction and/or formation of reaction intermediates as reaction progressed The drastic increase in the pH observed in the 35.29mM may indicate...

Ngày tải lên: 05/09/2013, 09:08

... sample [26] 2.2.2.3 Investigation of sterilizing capability of nano MnO2 adsorbents The routine monitoring of the bacteriological quality of drinking water relies on the use of the indicator organisms ... laterite in water 3.3.1 Investigation the influence of Mn2+ in sterilizing capability The experiment was performed to analysis the influence of Mn2+ on water sterilizing capability of MnO2 nanoparticles ... investigated in following time 3.2 Investigation of sterilizing capability of nano manganese dioxide In this research, total coliform was chosen as indicating bacteria for all bacterial removing investigation...

Ngày tải lên: 10/02/2014, 15:24

... Materials and methods To study the influence of waste water from some main factories on water quality of To Lich river, in this research findings previous studies of river water quality were collected ... surveying, site selecting and sampling the river’s water and industrial waste water from some main factories to analyze and compare The water samples were preserved and analyzed in the Laboratory of ... studies’ findings [1, 2, 4] 3.2 The composition of waste water from factories into To Lich river 3.1 Current Status of To Lich river water quality According to the analytic results of river water...

Ngày tải lên: 14/03/2014, 15:20

... US including the Tar-Pamlico Basin in North Carolina (case of point-point source trading also allowing for point-non-point trade), the case of Lake Dillon and the case of the Cherry Creek Basin ... measuring the concentration of salts, the nature and origins of which are well understood Salt pollution usually originates in the mining industry (salt mines, but also mine water from coal mines, ... MDBC-MURRAY DARLING BASIN COMMISSION (2001) Water Trading: Managing the Water Resources of the Murray-Darling Basin, Available online: www.mdbc.gov.au (7.6.01) MDBC-MURRAY DARLING BASIN MINISTERIAL...

Ngày tải lên: 15/03/2014, 16:20

... options but is lacking in China’s current policy decision making Our objective is to establish such a link by quantifying the impacts of air pollution in eastern China on public health in 2000, and ... in Zaozhuang which supplies 2% of total energy needs (10% of the energy needs in the residential and commercial sectors) in three surrounding municipalities—Jining and Linyi in Shandong Province ... reflected in the market price of coal, in 2020 the price of coal in China should be more than eight times higher than in 2000 3.3 Health benefits of potential technology changes in Zaozhuang in 2020...

Ngày tải lên: 15/03/2014, 20:20

... Raman scattering of a cylindrical phage Thus a continuum approach, when used cautiously, is a method of choice due to its relative simplicity and ease of interpretation In building a continuum model, ... is a linear combination of Bessel functions of the 1st and 2nd kinds, and the angular dependence is sinusoidal being proportional to sin(nθ) and cos(nθ) where n is an integer, n = [0,∞] Since ... pushing against the water on the exterior or against the water/ DNA solution in the interior cavity of the virus Axial modes produce displacements of the atoms that are parallel to the axis of...

Ngày tải lên: 20/06/2014, 02:20

... of concerning issues on clean water It is necessary to assess the quality of water used in industry, household activities and drinking purpose Understanding of the importance of clean water in ... Mechanism of sterilization of MnO2 coated on calcined laterite in water 33 3.3.1 Investigation the influence of Mn2+ in sterilizing capability 33 3.3.2 Examine the mechanism of sterilization of ... maintain a residual disinfecting agent throughout the distribution system, in which water may remain for days before reaching the consumer Following the introduction of any chemical disinfecting...

Ngày tải lên: 09/01/2015, 08:53

... while the wind induced flow exerts a drag on the water surface and causes floating objects to move in the wind direction Wind induced flow also causes the circulation of water, mixing the water surface ... In the study by Alvarez-Vazquez et al [29], the strategy consists of the injection of clean water from a reservoir at a nearby point into the river in order to dilute the contaminant in the water ... water velocity in uence the water surface Water velocities play a key role in the near field and wind induced water velocity is an important factor in the far field Under these in uences, the water...

Ngày tải lên: 09/09/2015, 10:06

... occurring in the molting cycle of shrimp (Cobb and Bryant F, 1977) Stage of molt Status of cuticle Events Postmolt Initially soft becoming increasingly harder - Continued water absorption Intermolt ... 21:00 h Amount of feed based on shrimp feeding requirement through observation of feeding activity of shrimp Salinity water was 2‰ Determination of molting intervals of shrimp: Molting of shrimp were ... a a Mean of molting interval Molting interval Fig.5: Molting intervals of white shrimp (L.vannamei) 4.2.2.2 Weight gain of white shrimp after molting After first molting, WG of shrimp in the 20-10-10...

Ngày tải lên: 22/09/2015, 12:38

... Strathclyde, Scotland nd A THESIS SUBMITTED FOR THE DEGREE OF MASTERS OF ENGINEERING DIVISION OF BIOENGINEERING NATIONAL UNIVERSITY OF SINGAPORE 2008 ii DEDICATION I would like to dedicate this ... LOADING AND UNLOADING OF MZ CHANNEL 71 FIGURE 3-41 : INCLINOMETERS CALIBRATION AT ZERO 72 FIGURE 3-42: SAGGITAL PLANE INCLINOMETER CALIBRATION 73 FIGURE 3-43: INCLINOMETER ... slide is in the plane of interest An alignment reading was then performed by sliding the forks of the frame between the lower pair of wedges on the leg The pointer was then pushed onto the pointer...

Ngày tải lên: 05/10/2015, 19:01

... structure of L-Serine Amino acids are the building blocks of proteins which are linear chains of amino acids There are twenty common amino acids used to synthesize protein in human body Eight of them ... TRANSFORMATION OF L-SERINE IN WATER WANG XIAO CHENG (B.ENG, TJU) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF CHEMICAL AND BIOMOLECULAR ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE ... dominated by Van Der Waals interactions Infrared rule If hydrogen bonds dominate in the unit cell, they mainly determine the oscillatory motion of the cell And if the binding energy of the intermolecular...

Ngày tải lên: 16/10/2015, 11:59

... effects of probiotics to the growth and survival rates of cobia larvae in order to determine suitable level of probiotics 1.3 Content of the study Study on the effect of probiotics supplemented in water ... females spawn many times per year In the spawning season, they gather in small groups and start spawning in sea shore or open sea The fecundity of female in peak of spawning season was estimated from ... the surrounding water Probiotics are defined as microbial cells that are administered in such a way as to enter the gastrointestinal tract and to be kept alive with the aim of improving health...

Ngày tải lên: 18/11/2015, 22:22

... president of the National Academy of Engineering The Institute of Medicine was established in 1970 by the National Academy of Sciences to secure the services of eminent members of appropriate professions ... all heightened interest in the role of scientific and engineering research in creating jobs, generating innovative technologies, spawning new industries, improving health, and producing other economic ... on measuring the impacts of federal investments in research 4 MEASURING THE IMPACTS OF FEDERAL INVESTMENTS IN RESEARCH Remarks of Congressman Rush Holt (D-NJ) At the beginning of the workshop,...

Ngày tải lên: 04/04/2017, 08:51

... MINISTRY OF EDUCATION AND TRAINING NHA TRANG UNIVERSITY THAI MINH QUANG ASSESSING CORAL BLEACHING AND DISEASES IN THE NINH HAI COASTAL WATERS OF NINH THUAN PROVINCE UNDER IMPACTS OF EL NINO IN ... purpose of assessing of the resilience of the corals Therefore, in this study "Assessing coral bleaching and diseases in the Ninh Hai coastal waters of Ninh Thuan province under impacts of El Niño in ... RECOMMENDATION During in May to June 2016, Ninh Hai reefs underwent a mass bleaching event as a result of an increasing anomaly of sea surface temperature (>30oC in May) under impacts of El Nino Bleaching...

Ngày tải lên: 28/10/2017, 21:38

... among three main types of water, namely continental waters which are mainly from the Gulf of Tonkin, offshore surface water of the North of Sea East and upwelling from high salty water below the ... into BinhDinh Rain and storm are the main natural disasters serious damaging people and fishing gears here Stormy season combined with the rainy season increases the severity of flooding during ... temperature of dry season will increase faster than temperature of rainy season The trend of rainfall in dry season decreases while rainfall 30 in rainy season increases in all scenarios The annual rainfall...

Ngày tải lên: 28/10/2017, 21:39

... large amounts of water Depending on the structure of the alkyl chain, the endocrine impact of each isomer is different [18,19] Our results confirm the in uence of the structure of the nonyl residue ... pressure inside the inlet was adjusted at 64,673 Pa and total flow of 48.6 mL/min at setpoint The purge flow of split venting was set at 45.0 mL/min after Injection volume was ␮L The washing between two ... temperature was increased to 300 ◦ C at a rate of 30 K/min and then kept at this temperature for Concentrations of 4-NP in all water samples were calculated by comparing the sum of the peak areas of all...

Ngày tải lên: 11/12/2017, 20:30