Results 81 to 90 of about 152,218 (276)

The Effect of Testing Lag on Chemical Indexes of Karst Water

open access: yesYankuang ceshi, 2019
BACKGROUND Sample testing is important for studying hydrogeology, engineering geology and environmental geology in Karst areas. The inconvenience of transportation, the difficulty of sample shipping and the delayed sample analyses by testing laboratory ...
ZHOU Chang-song   +5 more
doaj   +1 more source

Cumulative Impacts of Development on Water Quality and Endangered Species in the Bull and West Bull Creek Watersheds [PDF]

open access: yes, 1993
This article mentions Waller Creek as a representative for urban creeks in Austin In comparison to the focus of this report, Bull Creek, Waller Creek has a notably lower Water Quality Index.Waller Creek Working ...
City of Austin Environmental and Conservation Services Department
core   +1 more source

Mapping Palaeolithic Imprints: Spatial Analysis of Hand Stencils in El Castillo Cave (Spain) Through Geomatic Techniques

open access: yesArchaeometry, EarlyView.
ABSTRACT We present the application of a new quantitative approach to space study in Palaeolithic cave art. Using GIS, we analysed the distribution and position of hand stencils in El Castillo cave to track the gestures and behaviours of Palaeolithic societies.
Olga Spaey   +7 more
wiley   +1 more source

A Conceptualized Groundwater Flow Model Development for Integration with Surface Hydrology Model

open access: yes, 2017
A groundwater system model was developed and calibrated in the study area of Lehman Creek watershed, eastern Nevada. The model development aims for integrating the surface hydrologic model - precipitation runoff modeling system (PRMS) model - with the ...
Ahmad, Sajjad, Chen, Chao, Kalra, Ajay
core   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

open access: yesBoreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo   +5 more
wiley   +1 more source

PECCI Code (Python Estimation for Carbon Concentration and Isotopes) for Calculating the Concentration and Stable Carbon Isotopic Composition of Dissolved Inorganic Carbon (DIC) in Precipitation for northwestern Arkansas [PDF]

open access: yes, 2014
In karst settings, hydrograph separations using isotopic tracers are commonly and effectively used to quantify the proportions of rain rapidly delivered to springs along fractures and conduits during storm events.
Hays, Phillip D., Knierim, Katherine J.
core   +2 more sources

Preclinical models for evaluating psychedelics in the treatment of major depressive disorder

open access: yesBritish Journal of Pharmacology, EarlyView.
Psychedelic drugs have seen a resurgence in interest as a next generation of psychiatric medicines with potential as rapid‐acting antidepressants (RAADs). Despite promising early clinical trials, the mechanisms which underlie the effects of psychedelics are poorly understood.
Laith Alexander   +5 more
wiley   +1 more source

Analysis of karst leakage conditions and pipeline characteristics in the main blocked area of Yibasan reservoir, Yunnan

open access: yesCarsologica Sinica
Reservoir leakage is a significant challenge in the construction of water conservancy projects in karst areas. Yibasan reservoir is a key water source project planned for Wenshan Prefecture in Yunnan Province.
Chen SONG   +7 more
doaj   +1 more source

Are we hallucinating or can psychedelic drugs modulate the immune system to control inflammation?

open access: yesBritish Journal of Pharmacology, EarlyView.
Psychedelic drugs that activate 5‐HT2A receptors have been long used for cultural, medicinal and recreational purposes. Interest in psychedelics for treating psychiatric disorders has resurged recently and is well documented; less well recognised are their anti‐inflammatory properties. Growing evidence now demonstrates that psychedelics modulate immune
Omar Qureshi   +10 more
wiley   +1 more source

Characteristics of heavy metal element content and health risk assessment in groundwater in Zhaojue area, Sichuan Province, China

open access: yesScientific Reports
Groundwater serves as the primary drinking water source for residents in the Zhaojue area, located in the hinterland of the Daliang Mountains in Sichuan Province.
Yongsheng Lin   +6 more
doaj   +1 more source

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