نتایج جستجو برای: saltwater concentration

تعداد نتایج: 382117  

Journal: :Journal of the American Mosquito Control Association 1991
T G Floore C B Rathburn J C Dukes B W Clements A H Boike

The efficacy of sustained release Altosid sand granules to control adult Aedes taeniorhynchus and Culex quinquefasciatus emergence was investigated. Sand granules applied at a 7-day preflood application rate of 5.6 kg/ha controlled 99% of the Ae. taeniorhynchus emergence in saltwater plots for 44 days posttreatment and 35% of Cx. quinquefasciatus in freshwater plots. A 5.6 kg/ha rate controlled...

Journal: :نشریه بازیافت آب 0
مینا ارست کاشان، دانشگاه کاشان، دانشکدة منابع طبیعی و علوم زمین، گروه جغرافیا و اکوتوریسم غلامرضا زهتابیان تهران، دانشگاه تهران، دانشکدة منابع طبیعی، گروه احیای مناطق خشک و کوهستانی محمد جعفری تهران، دانشگاه تهران، دانشکدة منابع طبیعی، گروه احیای مناطق خشک و کوهستانی حسن خسروی تهران، دانشگاه تهران، دانشکدة منابع طبیعی، گروه احیای مناطق خشک و کوهستانی

management of unconventional water management in agricultural lands reduces environmental risks and increases its productivity. the purpose of this study was evaluating and comparing the effect of wastewater, saltwater and brackish water on some soil physical and chemical properties. for this purpose, five study sites including control area, irrigation with saltwater, brackish water wastewater ...

Journal: :The Journal of experimental biology 2013
Charles I Abramson Ibrahim Cakmak Meghan E Duell Leah M Bates-Albers Enoc M Zuniga Loma Pendegraft Amanda Barnett Carmen L Cowo Joshua J Warren Aaron C Albritton-Ford John F Barthell John M Hranitz Harrington Wells

Honey bees (Apis mellifera anatolica) were subjected to sequential trials where they were given the choice between a feature-positive and a feature-negative feeding plate. The 'feature' being manipulated is the presence of a single blue circle among three circles marking the location of a small sucrose reward. That is, a 'feature-negative' target had three white circles, while a 'feature-positi...

Journal: :اکو هیدرولوژی 0
هانیه نجف زاده کارشناس ارشد بیابان‏زدایی، دانشکدۀ منابع طبیعی، دانشگاه تهران غلامرضا زهتابیان استاد، دانشکدۀ منابع طبیعی، دانشگاه تهران حسن خسروی استادیار، دانشکدۀ منابع طبیعی، دانشگاه تهران علی گلکاریان استادیار، دانشکدۀ منابع طبیعی، دانشگاه فردوسی مشهد

this research was conducted in order to study the effect of climate and geology factors on groundwater sources in mahvelat plain. in order to study the groundwater quality and quantity considering groundwater resources including wells and qanats; using groundwater surface, electric conduction (ec) and the total density solution (tds), the maps of groundwater surface fluctuation and quality para...

2018
Mohammad Reza Vesali Naseh Roohollah Noori Ronny Berndtsson Jan Adamowski Elaheh Sadatipour

Although Iran's Ghaen Plain provides saffron to much of the world, no regional groundwater quality (GQ) assessment has yet been undertaken. Given the region's potential for saltwater intrusion and heavy metal contamination, it is important to assess the GQ and determine its main probable source of pollution (MPSP). Such knowledge would allow for informed mitigation or elimination of the potenti...

2017
Martina Siena Monica Riva

We analyze the combined effects of aquifer heterogeneity and pumping operations on seawater intrusion (SWI) in coastal aquifers, a phenomenon which is threatening Mediterranean and worldwide regions. We conceptualize the aquifer as a three-dimensional randomly heterogeneous porous medium, where the spatial distribution of permeability is uncertain. The geological setting of our study is pattern...

2009

Growth of American eels, Anguilla rostrata (Lesueur), sampled in saltwater bays and adjacent freshwater ponds in the southern Gulf of St. Lawrence, Canada, was estimated by otolith annulus back-calculation, and related to salinity of growth habitat as determined using otolith strontium:calcium ratios. Eels resident in salt water grew on average in length 2.2 times faster than freshwater residen...

2012
Sun Woo Chang Prabhakar Clement

[1] Sea level rise and reduction of groundwater fluxes due to changes in rainfall patterns are the two major climate change–induced hydrological variables that can severely affect saltwater intrusion in coastal aquifers. In this study we use a combination of laboratory experiments and numerical simulations to study the impacts of changes in one of these climate change–induced hydrological varia...

Journal: :Forensic science international 2005
Bao-Li Zhu Takaki Ishikawa Li Quan Dong-Ri Li Dong Zhao Tomomi Michiue Hitoshi Maeda

There appears to be very poor investigation of postmortem serum calcium (Ca) and magnesium (Mg) for diagnostic evidence to determine the cause of death. The aim of the present study was a comprehensive analysis of the serum levels in relation to the causes of death in routine casework. Autopsy cases (total, n=360; 5-48 h postmortem), including blunt injury (n=76), sharp injury (n=29), asphyxiat...

2003
E. Abarca J. Carrera X. Sánchez-Vila

The effect of heterogeneity on seawater intrusion is analyzed. Heterogeneity in hydraulic properties such as hydraulic conductivity is well known to significantly affect groundwater flow and solute transport. Yet, few studies [Mc Kribbin and O`Sullivan, 1980; Schincariol and Schwartz, 1990; Schincariol et al., 1997 and 1998; Simmons et al., 2001] have focused on evaluating the impact of heterog...

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