نتایج جستجو برای: chemical flooding

تعداد نتایج: 391195  

Various researches on laboratory and field scale illustrate that manipulating the ionic composition and the ion concentration of injected water can affect the efficiency of water flooding and the interaction of injected water with rock and other fluids present in porous media. The objectives of this paper are to investigate parameters that affect low salinity water flooding; mainly the effect o...

Journal: :Journal of environmental monitoring : JEM 2005
Nick D Bryan Jenny Barlow Peter Warwick Sarah Stephens Jenny J W Higgo David Griffin

Pulsed column experiments using Co, fulvic acid and porous sediment packing, along with up/down-flooding experiments using Eu, humic acid and intact sandstone blocks have been performed. The elution of metal and humic and their distribution along the sandstone columns have been measured. A mixed equilibrium and kinetic coupled chemical transport model has been used to simulate the results. In b...

2004
Christian Maihöfer

Geocasting is the delivery of a message to nodes within a geographical region. With geocast, new services and applications are feasible like finding friends that are nearby, geographic advertising and accident or wrong–way driver warning on a motorway. In this paper we present a survey on geocast routing protocols. The protocols mainly differ in whether they are based on flooding, directed floo...

2015
Amandine Merlin Anne Bonis Christian F. Damgaard François Mesléard Maura (Gee) Geraldine Chapman

The aim of the study is to investigate the relative importance of plant-plant interactions with regard to flooding and drought effect on perennial plant performances in wetlands. Flooding is expected to be the major driver and, accordingly, the importance of drought is hardly if ever taken into account. Focusing on five widespread species, the growth, the survival and the competitive ability of...

2017
Kristina A Dahl Melanie F Fitzpatrick Erika Spanger-Siegfried

Tidal flooding is among the most tangible present-day effects of global sea level rise. Here, we utilize a set of NOAA tide gauges along the U.S. East and Gulf Coasts to evaluate the potential impact of future sea level rise on the frequency and severity of tidal flooding. Using the 2001-2015 time period as a baseline, we first determine how often tidal flooding currently occurs. Using localize...

Journal: :NHM 2010
Changli Yuan Mojdeh Delshad Mary F. Wheeler

Abstract. With the depletion of oil reserves and increase in oil price, the enhanced oil recovery methods such as polymer flooding to increase oil production from waterflooded fields are becoming more attractive. Effective design of these processes is challenging because the polymer chemistry has a strong effect on reaction and fluid rheology, which in turn has s strong effect on fluid transpor...

2014
Zebin Liu Ruimei Cheng Wenfa Xiao Quanshui Guo Na Wang

Distylium chinense is an evergreen shrub used for the vegetation recovery of floodplain and riparian areas in Three Gorges Reservoir Region. To clarify the morphological and physiological responses and tolerance of Distylium chinense to off-season flooding, a simulation flooding experiment was conducted during autumn and winter. Results indicated that the survival rate of seedlings was 100%, an...

Journal: :Computer Networks 2010
Konstantinos Oikonomou Dimitrios Kogias Ioannis Stavrakakis

Probabilistic flooding has been frequently considered as a suitable dissemination information approach for limiting the large message overhead associated with traditional (full) flooding approaches that are used to disseminate globally information in unstructured peer-to-peer and other networks. A key challenge in using probabilistic flooding is the determination of the forwarding probability s...

Journal: :EURASIP J. Adv. Sig. Proc. 2016
Elvin Isufi Henry Dol Geert Leus

Flooding-based protocols are a reliable solution to deliver packets in underwater sensor networks. However, these protocols potentially involve all the nodes in the forwarding process. Thus, the performance and energy efficiency are not optimal. In this work, we propose some advances of a flooding-based protocol with the goal to improve the performance and the energy efficiency. The first idea ...

2011
Eung Seok Kim Hyun Il Choi

There has been an increase in the occurrence of sudden local flooding of great volume and short duration caused by heavy or excessive rainfall intensity over a small area, which presents the greatest potential danger threat to the natural environment, human life, public health and property, etc. Such flash floods have rapid runoff and debris flow that rises quickly with little or no advance war...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید