نتایج جستجو برای: fresh water production

تعداد نتایج: 1155445  

2017
Somaya Madkour Abeer sheta Fatma Badr El Dine Yasser Elwakeel Nermine AbdAllah

BACKGROUND Criminal offenders have a fundamental goal not to leave any traces at the crime scene. Some may suppose that items recovered underwater will have no forensic value, therefore, they try to destroy the traces by throwing items in water. These traces are subjected to the destructive environmental effects. This can represent a challenge for forensic experts investigating fingerprints. ...

2013
Bruce R. Conard

The word ―sustainability‖ is often used in business in the belief that the current ways of doing things will be able to be continued with only minor changes to balance economic development with related environmental and social issues. There are, however, immense challenges that threaten the very sustainability of our global society, let alone individual businesses or developments. A few of the ...

2008
K. Beaugelin-Seiller J. Garnier-Laplace R. Gilbin C. Adam

As there is no scientific reason to discriminate between chemicals and radioactive substances in terms of environmental risk assessment methodology (ERA), it is now generally recognised (Garnier-Laplace et al., 2006) that the classical ERA method (EC, 2003) may be applied to both of these substances. This is of particular interest in the case of uranium that presents a double ecotoxicity, chemi...

Journal: :Ambio 2003
Jonathan W Moore Daniel E Schindler Mark D Scheuerell Danielle Smith Jonathan Frodge

Nutrient pollution and associated eutrophication of freshwaters threaten the ecological integrity and the services provided to humans by lakes. We examined how human residential development influenced the level of lake eutrophication in the Seattle, WA, USA, region. We surveyed 30 lakes and measured 3 indicators of eutrophication: concentrations of chlorophyll-a and phosphorus, and the proporti...

2014
Matthew D. Taylor Dylan E. van der Meulen Matthew C. Ives Chris T. Walsh Ivars V. Reinfelds Charles A. Gray

Physicochemical variability in estuarine systems plays an important role in estuarine processes and in the lifecycles of estuarine organisms. In particular, seasonality of freshwater inflow to estuaries may be important in various aspects of fish lifecycles. This study aimed to further understand these relationships by studying the movements of a top-level estuarine predator in response to phys...

ژورنال: اکوبیولوژی تالاب 2020
minabi, ebrahim, morammazi, jasem, Yavari, vahid,

Due to fresh water resource limits and environmental damage caused by aquaculture waste using systems based on sustainable development at the global level is highly regarded. Aquaponics or fish and plant co-culture system is one of the new approaches to achieve aquaculture sustainable development. In this study which was conducted , in 2015, at Ahvaz Azadegan warm water fish culture complex, 6 ...

Journal: :journal of agricultural science and technology 2011
f. cheng h. sun h. shi zh. zhao q. wang

to investigate the effects of regulated deficit irrigation (rdi) on the growth, yield and quality of ‘yali’ pears, field experiments for c (fully watered control), ew [early withholding of irrigation, water stress from pullulation to 25 days after flower bloom (dafb)], mw (mid-growth withholding of irrigation, water stress from 25 dafb to 80 dafb), and lw (late withholding of irrigation, water ...

Journal: :Rural and remote health 2007
Jessica J Whelan Karen Willis

INTRODUCTION Access to safe drinking water is essential to human life and wellbeing, and is a key public health issue. However, many communities in rural and regional parts of Australia are unable to access drinking water that meets national standards for protecting human health. The aim of this research was to identify the key issues in and barriers to the provision and management of safe drin...

Journal: :Integrative and comparative biology 2012
Harvey B Lillywhite François Brischoux Coleman M Sheehy Joseph B Pfaller

Recent investigations of water balance in sea snakes demonstrated that amphibious sea kraits (Laticauda spp.) dehydrate in seawater and require fresh water to restore deficits in body water. Here, we report similar findings for Pelamis platurus, a viviparous, pelagic, entirely marine species of hydrophiine ("true") sea snake. We sampled snakes at Golfo de Papagayo, Guanacaste, Costa Rica and de...

Journal: :Comparative biochemistry and physiology. Part A, Molecular & integrative physiology 2002
Mary-Anne Lea Francesco Bonadonna Mark A Hindell Christophe Guinet Simon D Goldsworthy

The estimation of milk consumption in free-ranging seals using tritium dilution techniques makes the key assumption that the animals drink no pre-formed water during the experimental period. However, frequent observations of unweaned Antarctic fur seal pups drinking water at Iles Kerguelen necessitated the testing of this assumption. We estimated water flux rates of 30 pups (10.7+/-0.3 kg) in f...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید