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Journal articles on the topic 'Floodgates'

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Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Zhang, Xin Zhou, Yin Yan Song, and Shao Ming Chen. "Simulation Study on Deposition Downstream Floodgates in Estuarine." Applied Mechanics and Materials 580-583 (July 2014): 2037–40. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.2037.

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Siltation in the rivers downstream of floodgates is serious in China, making the discharge capacity of rivers decrease obviously and threatening the flood control in upper rivers. Tidal wave deformation is one conclusive dynamic factor leading to siltation downstream of floodgates in estuaries. A 2-D numerical model of tide and sediment transport is established to simulate the distribution of sediment siltation downstream of the floodgate, and several conclusions are obtained in this paper which can provide some theoretical basis for the prediction and analysis of the siltation characteristics in lower reach caused by floodgates in estuaries.

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2

Fan, Zhongya, Zhong Wang, Yiping Li, Wencai Wang, Chunyan Tang, and Fantang Zeng. "Water Level Fluctuation under the Impact of Lake Regulation and Ecological Implication in Huayang Lakes, China." Water 12, no. 3 (March 4, 2020): 702. http://dx.doi.org/10.3390/w12030702.

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Water level fluctuation (WLF) in shallow lakes in the middle and lower reaches of the Yangtze River has been a concern of many researchers. This work aims to investigate the effects of climate change and regulation of floodgates and the Three Gorges Dam (TGD) on WLF and lake volume in Huayang Lakes during the past 52 years. The results revealed that precipitation is the dominant factor that leads to seasonal variation of lake levels, whereas regulation of floodgates and TGD are the key drivers of hydrology regime change in the past 20 years. Natural lake regime has higher water level when there is more precipitation and less lake volume. Floodgates and TGD regulations have changed this pattern since 2003, causing less difference in water level in spite of more precipitation and lake recession. Under the combined impacts of floodgates and TGD regulations, Huayang Lakes have experienced a prolonged outflow time since 2003 and the contribution rate caused by the floodgates and TGD regulations has increased by 19.90%. Additionally, the water level of Huayang Lakes decreased by approximately 0.3~0.5 m from September to November, but it showed no alteration from January to March in the past two decades. This indicated that floodgate regulations used for agricultural irrigation and fishery culture dominate the hydrology regime in winter and early spring. This study is beneficial for aquatic ecosystem protection in floodgate-controlled lakes under the circumstance of climate change and vigorous anthropology activities.

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3

Rais, Rais, and Yerry Febrian Sabanise. "Sistem Monitoring Pintu Air Bendungan Menggunakan Mikrokontroler Wemos D1 R1 Berbasis Website." Journal of Innovation Information Technology and Application (JINITA) 1, no. 01 (December 26, 2019): 51–60. http://dx.doi.org/10.35970/jinita.v1i01.85.

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Floodgate monitoring is related to water level monitoring. Problems that occur Weir information about the water level, water runoff, level, status of floodgates and recap results that can be seen on the web in real-time are not yet available, so monitoring the floodgates is difficult, less effective and maximum. Weir officials must go back and forth from the weir to the guard post and then to the control to move the floodgates. The purpose of the design of a sluice monitoring system is based on the website. Assist officers in monitoring floodgates to make it more effective and maximal. Using Wemos D1 R1 Microcontroller, Ultrasonic Sensor HC-SR04 to read water level, DC Motor moves the floodgates. LCD displays runoff and level. Siren as a danger warning. The trial results show that the system that has been made runs well. The system is able to open the floodgates through control of the web and runs automatically. Water runoff and level can be displayed on the LCD. Weir information about water levels, water runoff, levels, sluice status, and recap results can be viewed on the web in real time.

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4

Scott, David C., Michael Arbeider, Jennifer Gordon, and Jonathan W. Moore. "Flood control structures in tidal creeks associated with reduction in nursery potential for native fishes and creation of hotspots for invasive species." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 7 (July 2016): 1138–48. http://dx.doi.org/10.1139/cjfas-2015-0311.

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Habitat connectivity is important for maintaining biodiversity and ecosystem processes yet globally is highly restricted by anthropogenic actions. Anthropogenic barriers are common in aquatic ecosystems; however, the effects of small-scale barriers such as floodgates have received relatively little study. Here we assess fish communities in ten tributaries over the spring–summer season of the lower Fraser River (British Columbia, Canada), five with floodgates and five reference sites without barriers, located primarily in agricultural land use areas. While the Fraser River supports the largest salmon runs in Canada, the lower Fraser river–floodplain ecosystem has numerous dikes and floodgates to protect valuable agricultural and urban developments. Floodgate presence was associated with reduced dissolved oxygen concentrations, threefold greater abundance of invasive fish species, and decreased abundances of five native fish species, including two salmon species. These findings provide evidence that floodgates decrease suitable habitat for native fishes, and become hotspots for non-native species. Given climate change, sea-level rise, and aging flood protection infrastructure, there is an opportunity to incorporate biodiversity considerations into further development or restoration of this infrastructure.

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5

Hussen Hajjaj, Sami Salama, Mohamed Thariq Hameed Sultan, Muhammad Hafizuddin Moktar, and Seng Hua Lee. "Utilizing the Internet of Things (IoT) to Develop a Remotely Monitored Autonomous Floodgate for Water Management and Control." Water 12, no. 2 (February 12, 2020): 502. http://dx.doi.org/10.3390/w12020502.

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In recent years, floods have increased in frequency and intensity, causing tremendous hardship. In badly affected regions, mostly the rural areas, Weir-type floodgates are the only measure against floods. However, these manually operated gates are numerous and scattered over vast areas. This makes flood mitigation efforts very challenging, which causes severe devastation. Current solutions to automate the floodgates are expensive, black-boxed, and focused on individual gates. In this paper, we present a Centralized Flood Monitoring and Coordination System developed through the Internet of Things (IoT) and other open-source technologies. For this work, we developed a working prototype of an autonomous floodgate that opens/closes according to the level of water. We also developed the required program to allow the gate controller to publish its data through the IoT gateway to the cloud. The data was then captured and viewed on a number of IoT clients, both for individuals and groups of floodgates, in real time. The developed system proved successful as the autonomous gates were monitored remotely through the established IoT framework, with room for future development and improvement. This paper serves as a proof of concept and a preparation for real, on-site implementation of the IoT-floodgates.

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6

Kroon, Frederieke J., and Dean H. Ansell. "A comparison of species assemblages between drainage systems with and without floodgates: implications for coastal floodplain management." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 11 (November 1, 2006): 2400–2417. http://dx.doi.org/10.1139/f06-134.

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Coastal floodplains provide essential nursery habitat for a large number of fish and prawn species, many of which are commercially and recreationally important. Human activities in coastal floodplains, such as those associated with agriculture and (or) development, can have detrimental impacts on this nursery function. We examined the potential role of flood mitigation structures, in particular tidal floodgates, in depleting estuarine and inshore fisheries stocks in eastern Australia. We compared species assemblages (abundance and biomass) in reference and gated drainage systems in the Clarence River floodplain (New South Wales, Australia) over a 1-year period. We subsequently determined which environmental variables were associated with the observed patterns in species assemblages. Our results show that abundance, biomass, and assemblages of juvenile fishes and invertebrates differed significantly and consistently between drainage systems with and without floodgates. The major environmental variables of concern in systems with floodgates were (i) presence of a floodgate, (ii) elevated concentrations of nutrients, and (iii) abundance of aquatic weeds. We discuss our findings in light of potential strategies to improve coastal floodplain management for fisheries production purposes.

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7

Bhabha, Homi K., and Henry Louis Gates. "Opening the Floodgates." Poetics Today 8, no. 1 (1987): 181. http://dx.doi.org/10.2307/1773009.

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8

Powell, Kendall. "Open the floodgates!" Nature 420, no. 6914 (November 2002): 356–58. http://dx.doi.org/10.1038/420356a.

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9

Rogers, David. "Waiting for the floodgates." Construction Research and Innovation 4, no. 3 (September 2013): 18–19. http://dx.doi.org/10.1080/20450249.2013.11873894.

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10

Kelly, James. "Editorial: Opening the floodgates?" Proceedings of the Royal Irish Academy, Section C 113, no. -1 (January 1, 2013): vii—xi. http://dx.doi.org/10.3318/priac.2013.113.12.

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11

McPhaden, Michael J. "The Floodgates of Change." Eos, Transactions American Geophysical Union 94, no. 1 (January 1, 2013): 5. http://dx.doi.org/10.1002/2013eo010011.

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12

Leslie, Mitch. "Closing the calcium floodgates." Journal of Cell Biology 205, no. 2 (April 21, 2014): 128. http://dx.doi.org/10.1083/jcb.2052iti2.

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13

James, P. S. "Economic Loss: The Floodgates." Denning Law Journal 2, no. 1 (October 30, 2012): 97–107. http://dx.doi.org/10.5750/dlj.v2i1.161.

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14

Boys, Craig A., and Bruce Pease. "Opening the floodgates to the recovery of nektonic assemblages in a temperate coastal wetland." Marine and Freshwater Research 68, no. 6 (2017): 1023. http://dx.doi.org/10.1071/mf15445.

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Tidally active wetlands are important nurseries for fish and crustaceans; however, urban development involving structural flood mitigation has fragmented and destroyed much of this habitat, often leading to losses in fisheries productivity. The present study demonstrated that some of these impacts may be reversible if rehabilitation projects are implemented over a sufficiently long time. The incremental opening of eight floodgates at a temperate coastal wetland in Australia afforded the opportunity to monitor water quality and nekton assemblages in a tidal creek over 11 years, encompassing pre-floodgate opening, opening of one gate, three gates and finally all eight gates. Floodgate opening enhanced both water quality and nektonic assemblages relative to a control creek whose barrier remained in place. A doubling in species richness occurred and many commercially important species increased in abundance, including Metapenaeus macleayi (15 times more), Acanthopagrus australis (62 times more), Liza argentea (10 times more) and Gerres subfasciatus (19 times more). Recovery to a condition similar to unrestricted reference creeks was achieved once all eight gates were opened. The study illustrated that reinstating tidal flushing can recover nursery habitats and enhance populations of economically valuable species.

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15

Blaine Metting, F., and Margaret F. Romine. "Microbial genomics: The floodgates open." Trends in Microbiology 5, no. 3 (March 1997): 91–92. http://dx.doi.org/10.1016/s0966-842x(97)01003-2.

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16

Buesseler, Ken O. "Opening the floodgates at Fukushima." Science 369, no. 6504 (August 6, 2020): 621–22. http://dx.doi.org/10.1126/science.abc1507.

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17

Gandhi, C. S., and D. C. Rees. "BIOCHEMISTRY: Opening the Molecular Floodgates." Science 321, no. 5893 (August 29, 2008): 1166–67. http://dx.doi.org/10.1126/science.1162963.

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18

Minghong, Chen, Fang Hongwei, Zheng Yi, and He Guojian. "Integrated Flood Management for Beiyun River, China." Journal of Hydrology and Hydromechanics 61, no. 3 (September 1, 2013): 177–87. http://dx.doi.org/10.2478/johh-2013-0023.

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Abstract Beiyun River Basin is holistically suffering a water shortage and relatively concentrated flood risk. The current operation (level-control) of dams and floodgates, which is in passive defense mode, cannot meet the demands of both flood control and storm water resources. An integrated flood forecasting and management system is developed by the connecting of the hydrological model and hydrodynamic model and coupling of the hydrodynamic model and hydraulic model for dams and floodgates. Based upon the forecasted runoff processes, a discharge-control operation mode of dams and floodgates is proposed to be utilized in order to well regulate the flood routing in channels. The simulated water level, discharge, and water storage volume under different design conditions of rainfall return periods and floodgates operation modes are compared. The results show that: (1) for small floods, current operation modes can satisfy the objectives, but discharge-control operation can do better; (2) for medium size floods, since pre-storing of the floods affects the discharge of follow-up floods by floodgates, the requirement of flood control cannot be satisfied under current operations, but the discharge-control operation can; (3) for large floods, neither operation can meet the requirement because of the limited storage of these dams. Then, the gravel pits, wetlands, ecological lakes and flood detention basins around the river must be used for excess flood waters. Using the flood forecasting and management system can change passive defense to active defense mode, solving the water resources problem of Beijing city and Beiyun River Basin to a certain extent.

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19

Amato, I. "Cell-like Biosensor Opens Ionic Floodgates." Science News 135, no. 8 (February 25, 1989): 117. http://dx.doi.org/10.2307/3973639.

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20

Jenkins, Philip. "The Last Floodgates of the World." Chesterton Review 25, no. 1 (1999): 65–69. http://dx.doi.org/10.5840/chesterton1999251/238.

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21

Moss, Jonathan, and Anna Williams. "Opening the floodgates to the brain." Science 367, no. 6483 (March 12, 2020): 1195–96. http://dx.doi.org/10.1126/science.aba8801.

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22

Pease, B., and B. Green. "OBSERVING FISH BEHAVIOUR AT TIDAL FLOODGATES." Society of Wetland Scientists Bulletin 24, no. 3 (September 2007): 29–30. http://dx.doi.org/10.1672/0732-9393(2007)24[29:ofbatf]2.0.co;2.

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23

Burke, Daniel P., and Kevin J. McGough. "PTO opens floodgates on animal patents." Bio/Technology 11, no. 3 (March 1993): 270. http://dx.doi.org/10.1038/nbt0393-270.

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24

Handayani, Yanolanda Suzantry, and Adhadi Kurniawan. "Rancang Bangun Prototipe Pengendali Pintu Air Berbasis SMS (Short Message Service) Untuk Pengairan Sawah Menggunakan Arduino." JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER 10, no. 2 (November 30, 2020): 34–41. http://dx.doi.org/10.33369/jamplifier.v10i2.15330.

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AbstrakCurrently opening and closing the floodgates for rice fields is still using the manual method, the manual method certainly still requires more effort to do this. Therefore it is necessary to develop a floodgate controller prototype using SMS (Short Message Service) with Arduino as the microcontroller, before making it into a larger form.This research uses experimental research methods. This research was conducted in the robotics laboratory of the Electrical Engineering Study Program, Faculty of Engineering, Bengkulu University. The results of the study, the time to send the fastest SMS when the fields need water is 10.21 seconds and the time to send the fastest SMS when the water needs for the fields is sufficient is 10.00 seconds using the Tri SIM card and the longest time to send SMS when the fields need water is 16.28 seconds and the sending time The longest SMS when the water requirement for rice fields is sufficient is 16.71 seconds using an Indosat SIM card. The performance of the floodgate controller prototype can open and close properly according to the command given via SMS service on the cellphone.Kata kunci: Module SIM800L, sensor ultrasonic, motor servo, Arduino Uno R3.

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25

Jong, Mun Chan, Li Yang Xie, Hak Jin Song, Sun Jong Jon, Myong Il Kim, and Xiao Lv. "Lifetime Estimation of Chain Plates for Floodgates Working in Seawater by Continuum Fatigue-Creep Damage Theory and Transient Analysis of Diffusion Process of Hydrogen." Advanced Materials Research 1095 (March 2015): 452–57. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.452.

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Lifetime estimation of chain plates made of 45Cr high strength steel for floodgates working in seawater has been performed by considering fatigue-creep crack initiation and hydrogen assisted crack propagation at the plate. According to the records of operating history of the floodgates, average lifetime of the chain plate is in range of 18~22 years. Estimated lifetime of the chain plate by continuum fatigue-creep damage theory and transient analysis of the diffusion process of atomic hydrogen in the metallic lattice is in range of 19~25 years.

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26

Tsvetkova, Ludmila. "Saint Petersburg Flood Protection Dam as Tool to Solve the Environmental Tasks." Key Engineering Materials 828 (December 2019): 202–7. http://dx.doi.org/10.4028/www.scientific.net/kem.828.202.

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The paper grounds the necessity to conduct the large-scale field experiment on manoeuvring with the floodgates of Saint Petersburg Flood Protection Complex (FPC). The paper presents the results of I-stage experiment and the program of II-stage experiment. The aim of the experiment is the verification of the possibility to manage the hydrological, sanitary and ecological state of the Neva Bay and the eastern part of the Gulf of Finland of the Baltic sea by means of manoeuvring with Flood Protection Complex floodgates. In order to develop the program of field experiment implementation it was necessary to assess the sanitary and ecological state of water ecosystem under present conditions. The assessment was based on monitoring data concerning the certain priority parameters obtained from the selected representative measuring points. On the basis of the analysis of water quality and the state of the Neva Bay and the eastern part of the Gulf of Finland the scheme for manoeuvring with floodgates of the FPC together with the sequence of order of their opening and closing was developed. Recommendations regarding the conditions and terms of conducting the experiment were developed.

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27

Chernetsky, Vitaly, Edward Hogan, Askold Melnyczuk, Michael Naydan, Mykola Riabchuk, Oksana Zabuzhko, Volodymyr Dibrova, Halyna Hryn, Oksana Zabuzhko, and Marco Carynnyk. "Opening the Floodgates: The New Ukrainian Writing." Slavic and East European Journal 41, no. 4 (1997): 674. http://dx.doi.org/10.2307/309837.

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28

Druker, Brian J. "Molecularly Targeted Therapy: Have the Floodgates Opened?" Oncologist 9, no. 4 (July 2004): 357–60. http://dx.doi.org/10.1634/theoncologist.9-4-357.

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29

Stone, Edward J. "OCC opens floodgates with first union opinion." Banks in Insurance Report 12, no. 9 (January 1997): 1–4. http://dx.doi.org/10.1002/bir.3820120902.

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30

Sebastiá-Frasquet, María-Teresa, Jesús A. Aguilar-Maldonado, Eduardo Santamaría-Del-Ángel, and Javier Estornell. "Sentinel 2 Analysis of Turbidity Patterns in a Coastal Lagoon." Remote Sensing 11, no. 24 (December 6, 2019): 2926. http://dx.doi.org/10.3390/rs11242926.

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Coastal lagoons are transitional ecosystems with complex spatial and temporal variability. Remote sensing tools are essential for monitoring and unveiling their variability. Turbidity is a water quality parameter used for studying eutrophication and sediment transport. The objective of this research is to analyze the monthly turbidity pattern in a shallow coastal lagoon along two years with different precipitation regimes. The selected study area is the Albufera de Valencia lagoon (Spain). For this purpose, we used Sentinel 2 images and in situ data from the monitoring program of the Environment General Subdivision of the regional government. We obtained Sentinel 2A and 2B images for years 2017 and 2018 and processed them with SNAP software. The results of the correlation analysis between satellite and in situ data, corroborate that the reflectance of band 5 (705 nm) is suitable for the analysis of turbidity patterns in shallow lagoons (average depth 1 m), such as the Albufera lagoon, even in eutrophic conditions. Turbidity patterns in the Albufera lagoon show a similar trend in wet and dry years, which is mainly linked to the irrigation practice of rice paddies. High turbidity periods are linked to higher water residence time and closed floodgates. However, precipitation and wind also play an important role in the spatial distribution of turbidity. During storm events, phytoplankton and sediments are discharged to the sea, if the floodgates remain open. Fortunately, the rice harvesting season, when the floodgates are open, coincides with the beginning of the rainy period. Nevertheless, this is a lucky coincidence. It is important to develop conscious management of floodgates, because having them closed during rain events can have several negative effects both for the lagoon and for the receiving coastal waters and ecosystem. Non-discharged solids may accumulate in the lagoon worsening the clogging problems, and the beaches next to the receiving coastal waters will not receive an important load of solids to nourish them.

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31

O’Sulltvan, Janet. "NUISANCE, HUMAN RIGHTS AND SEWAGE—CLOSING THE FLOODGATES." Cambridge Law Journal 63, no. 3 (November 2004): 552–54. http://dx.doi.org/10.1017/s0008197304306677.

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32

SULLIVAN, MICHELE G. "Patient Portals: Not the Open Floodgates Physicians Fear." Clinical Psychiatry News 36, no. 2 (February 2008): 63. http://dx.doi.org/10.1016/s0270-6644(08)70120-6.

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33

Krosnar, Katka. "EU expansion will open patient floodgates, minister warns." BMJ 328, no. 7445 (April 15, 2004): 912.3. http://dx.doi.org/10.1136/bmj.328.7445.912-b.

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34

Donleavy, Gabriel D. "Floodgates and accountability: issues in an orbital theory." International Journal of Economics and Accounting 3, no. 2 (2012): 101. http://dx.doi.org/10.1504/ijea.2012.048068.

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35

Vogel, L. "Panel's recommendations could open privatization floodgates, delegates warn." Canadian Medical Association Journal 183, no. 13 (August 29, 2011): E991—E992. http://dx.doi.org/10.1503/cmaj.109-3979.

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36

Louët, Sabine. "IPO floodgates unlikely to open after Ark floatation." Nature Biotechnology 22, no. 4 (April 2004): 367–68. http://dx.doi.org/10.1038/nbt0404-367.

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37

Keogh, Andrew. "Rape trauma syndrome – Time to open the floodgates?" Journal of Forensic and Legal Medicine 14, no. 4 (May 2007): 221–24. http://dx.doi.org/10.1016/j.jcfm.2006.08.005.

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38

Geiger, Tamar, and Ronen Zaidel-Bar. "Opening the floodgates: proteomics and the integrin adhesome." Current Opinion in Cell Biology 24, no. 5 (October 2012): 562–68. http://dx.doi.org/10.1016/j.ceb.2012.05.004.

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39

Michel, Denis. "How transcription factors can adjust the gene expression floodgates." Progress in Biophysics and Molecular Biology 102, no. 1 (January 2010): 16–37. http://dx.doi.org/10.1016/j.pbiomolbio.2009.12.007.

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40

Curran, Louise. "The EU clothing market in 2008 – opening the floodgates?" Journal of Fashion Marketing and Management: An International Journal 13, no. 3 (July 10, 2009): 305–10. http://dx.doi.org/10.1108/13612020910974456.

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41

Periáñez, Raúl, Fangli Qiao, Chang Zhao, Govert de With, Kyung-Tae Jung, Chalermrat Sangmanee, Guansuo Wang, Changshui Xia, and Min Zhang. "Opening Fukushima floodgates: Modelling 137Cs impact in marine biota." Marine Pollution Bulletin 170 (September 2021): 112645. http://dx.doi.org/10.1016/j.marpolbul.2021.112645.

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42

Wicaksono, Dimas Priatmoko, Didik Harijianto, and Nurul Jannah Asid. "Analisis Dan Evaluasi Sistem Drainase (Studi Kasus: Ruas Jl. Coklat, Kel. Bongkaran Kec. Pabean Cantikan, Kota Surabaya)." Ge-STRAM: Jurnal Perencanaan dan Rekayasa Sipil 3, no. 2 (September 30, 2020): 94. http://dx.doi.org/10.25139/jprs.v3i2.3103.

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The city of Surabaya is one of the big cities in Indonesia. Like other cities, Surabaya also has problems, especially problems regarding flooding. The problem of flooding in the city of Surabaya can be classified into 2 (two). Namely, drainage problems due to natural factors and man-made. One of the roads that are still regularly flooded in Surabaya when it rains is Jalan Coklat. In this study the authors analyzed using secondary data from related agencies from field observations. These data include rainfall data, inundation data, tide data and dimensions of existing canals and other complementary structures. From these data, it can be obtained that the average rainfall value is 97.54 mm / day, the rain intensity is 214.88 mm / hour for the 10th period, while the Flood Debit Q Planning is 0.95 m3 / sec, and the discharge in the existing channel can be 0, 849 m3 / second. From the Tide Data, it is obtained that the peak of the tide is 150 cm high on December 13, 2016 and the lowest low tide is 130 cm on January 25, 2016. From the calculation and analysis results in the area that affects the occurrence of inundation is the channel dimension with Width: 50 x Height: 80 cm From the analysis of the calculation of the redesign using the box culvert, the dimensions of each box are obtained, namely the width of the box culvert: 80 x height: 100 x length: 120 cm for the 10th period with a capacity of 2.227 m3 / second. If the rainfall is high in the area and the water level in the Kalimas river is overflowing, the results of the analysis need to install a floodgate with the dimensions of the sluice gate Width: 60 x Height: 180 x Thickness: 1 cm so that when there is back water in the jl area . Brown floodgates function and when the rainfall is also high, the floodgates are already operating, so to reduce water puddles, it is necessary to use the help of a pump. From the analysis results, the pump capacity is 2.5 m3 / second.

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43

Corlett, Angelo, and Kimberly Unger. "The collateral damage of opening floodgates: Problems with Kevin R. Johnson’s arguments for U.S. immigration reform." Filozofija i drustvo 24, no. 4 (2013): 299–314. http://dx.doi.org/10.2298/fid1304299c.

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This article is a critical discussion of Kevin R. Johnson?s discussion of current U.S. immigration policy and of his own proposal regarding open immigration as his views are set forth in his book, Opening the Floodgates, as well as some of his other works on the topic.

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44

Sammut, J., I. White, and MD Melville. "Acidification of an estuarine tributary in eastern Australia due to drainage of acid sulfate soils." Marine and Freshwater Research 47, no. 5 (1996): 669. http://dx.doi.org/10.1071/mf9960669.

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Episodic acidification (pH <5) of estuarine tributaries caused by the oxidation of sulfidic floodplain sediments is widespread in eastern Australia. Drainage and flood mitigation works promote oxidation and the export of sulfuric acid and dissolved aluminium and iron into streams. This paper examines the acidification of a tidal reach on the Richmond River, New South Wales. Acid discharge is controlled by the floodplain water balance, drainage of shallow acid groundwater, and tidal floodgate operation. Floodgates store acid waters for more than six months. Acid discharges ranged from short pulses during light rains to ~950 t of sulfuric acid in a major flood that acidified the reach for over seven weeks. Extensive iron flocs accompanied acidification and coated the benthos. The chemistry of the reach reflected mixing of acid groundwater with upland waters and showed pH-dependent enhancement or depletion of species relative to chloride. Concentrations of monomeric aluminium were over 300 times larger than local (ANZECC) guidelines and 90 km of the river were acidified after floods. The estimated rate of sulfuric acid production from the floodplain is ~300 kg ha-1 year-1 and discharge may occur for over 1000 years. Management options are considered; however, the long-term consequences of acidification of tidal reaches are unknown.

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45

Mitra, Dana. "Opening the Floodgates: giving students a voice in school reform." FORUM 43, no. 2 (2001): 91. http://dx.doi.org/10.2304/forum.2001.43.2.14.

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Allen Kimel, R., and Susan B. Sinnott. "The materials science and engineering undergraduate enrollment floodgates are open." MRS Bulletin 43, no. 4 (April 2018): 257–61. http://dx.doi.org/10.1557/mrs.2018.78.

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THORLAKSON, LORI. "Building Firewalls or Floodgates? Constitutional Design for the European Union*." JCMS: Journal of Common Market Studies 44, no. 1 (March 2006): 139–59. http://dx.doi.org/10.1111/j.1468-5965.2006.00617.x.

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Dick, Todd M., and Olusegun O. Osunkoya. "Influence of tidal restriction floodgates on decomposition of mangrove litter." Aquatic Botany 68, no. 3 (November 2000): 273–80. http://dx.doi.org/10.1016/s0304-3770(00)00119-4.

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Hill, David. "Japan Looks to Self-Elevating Floodgates For Increased Tsunami Protection." Civil Engineering Magazine Archive 85, no. 6 (June 2015): 42–43. http://dx.doi.org/10.1061/ciegag.0001008.

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Whybrow, Jonathan. "Opening the floodgates: the price of modernisation of child law." Journal of Children's Services 5, no. 2 (June 30, 2010): 60–63. http://dx.doi.org/10.5042/jcs.2010.0302.

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