نتایج جستجو برای: pollution indexes
تعداد نتایج: 92531 فیلتر نتایج به سال:
The agricultural use of soils is limited by their contamination with various compounds and low contents nutrients. We aimed to study the unique Yamal Experimental Station determine heavy metals assess potential fertility.
 Established in 1932, (Salekhard, Russia) has bred new varieties vegetable crops open protected ground. In August 2021, we made a soil section 40 pits 0–10 cm layer. X-ra...
Understanding the evolution characteristics and driving mechanisms of eutrophic lake ecosystems, especially over long time scales, remains a challenge. Little research on ecosystem mutation has been conducted using long-term series data. In this study, water quality indicators, as well ecological indexes, natural meteorological factors, socio-economic were collected for Tai Lake to enable us st...
During its journey, the river water suffers natural or anthropic contamination, deteriorating quality. This impact can be qualified by determining pollution Indexes (IPO). The work aimed to evaluate spatial and temporal variation of IPOs in high Andean micro-basin Chumbao River. study included section from 13°46'38.4” S, 73°15'32.3” W at 4079 m altitude up 13°35'26.4” 73°27'00.8” 2572 altitude....
Targeting specific locations within agricultural watersheds for installing vegetative buffers has been advocated as a way to enhance the impact of buffers and buffer programs on stream water quality. Existing models for targeting buffers of Hortonian, or infiltration-excess, runoff are not well developed. The objective was to improve on an existing soil survey–based approach that would provide ...
Heavy metals in agricultural soil pose human health risks through food consumption. In a novel study for Trinidad, concentration and pollution index levels of heavy were assessed from 18 farms using the X-Ray fluorescence technique, then to evaluate Geo-accumulation Nemerow’s Integrated Pollution indexes. Toxic elements Pb As present but quality due anthropogenic input was found as unpolluted. ...
This study aims to determine the impact of financial development on green ecology promote cleaner production. Particularly, it estimates evolution characteristics green-ecology 37 cities from Yangtze River Delta and determines using projection pursuit model, Moran’s Index, regression model. Results found that index showed an upward trend in East was higher than West. The its composition indexes...
PURPOSE This study examined whether any of a series of segmental and whole-word measures of articulatory competence captured more of the variance in impressionistic ratings of severity of involvement in speech delay. It also examined whether knowing the age of the child affected severity ratings. METHOD Ten very experienced speech-language pathologists rated severity of involvement from conve...
Tourism has become a very important and dynamic sector both in the world economy and particular in the developing countries. Its growth affects not only the activities directly linked to tourism but also other sectors. Tourism is already an important sector in some developing countries and will become so for others. Developing countries have been fast growing in tourism industry terms in the wo...
A comparative study was performed on the initial and final bacillary indexes of 213 multibacillary leprosy patients who received 12 doses (Group 1: 128 patients) or 24 doses (Group 2: 85 patients) of multidrug therapy (MDT/WHO) to measure the effectiveness of the two regimens. All patients were evaluated at treatment baseline, 12 months, and 24 months. The reduction in bacillary levels and mean...
In order to evaluate the graduates attending second-round examination objectively, this study established graduate second-round examination evaluate system based on Analytic Hierarchy Process (AHP) and Fuzzy comprehensive evaluation method. Evaluation indexes in the system included knowledge structure, scientific research ability and comprehensive quality of graduates attending second-round exa...
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