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31.
Sultana Afreen Kathuria Ajay Gaikwad Kirtiraj K. 《Environmental Chemistry Letters》2022,20(2):1479-1495
Environmental Chemistry Letters - Food wastage is a major concern for sustainable health and agriculture. To reduce food waste, classical preservation techniques such as drying, pasteurization,... 相似文献
32.
Akkala Siva Ram Kumar Kaviti Ajay 《Environmental science and pollution research international》2022,29(32):48020-48056
Environmental Science and Pollution Research - Clean water production using green energy supply plays a significant role in the globe’s health and economic development. In recent years, so... 相似文献
33.
Mortality caused by the aqueous extracts of leaf and stem bark of four plants belonging to family Euphorbiaceae and Apocynaceae against freshwater fish Channa punctatus has been reported. It was found that dilute aqueous solutions of leaf and stem bark were active in killing the fishes. The toxic effect of stem bark of all the plants were time as well as dose dependent. There was significant negative correlation between LC50 and exposure periods. Thus, the LC50 values of stem bark extracts of Euphorbia royleana, Jatropha gossypifolia, Nerium indicum and Thevelia peruviana were decreased from 0.050 g/l (24 h) > to 0.020 g/l (96 h); 4.61 g/l (24 h) > to 4.34 g/l (96 h); 0.097 g/l (24 h) > to 0.041 g/l (96 h) and 4.05 g/l (24 h) > to 3.17 g/l (96 h), respectively. It has been suggested that these plant products cannot be used directly in freshwater bodies, without their detailed studies on long-term effects on non-target organism as well their structure activity relationship. 相似文献
34.
Learning,retention and coding of nest-associated visual cues by the Australian desert ant, <Emphasis Type="Italic">Melophorus bagoti</Emphasis> 总被引:3,自引:0,他引:3
Ajay Narendra Aung Si Danielle Sulikowski Ken Cheng 《Behavioral ecology and sociobiology》2007,61(10):1543-1553
A variety of social insects use visual cues for homing. In this study, we examine the possible factors affecting the learning
and retention of nest-associated visual cues by the Australian desert ant Melophorus bagoti and the manner in which such cues are encoded by foraging ants. We placed four prominent cylindrical landmarks around a nest
and trained foragers from that nest to a food source. Ants were tested with the landmark array in a distant testing field
after (1) a known number of exposures to the landmarks (1, 3, 7 or 15 trials, spread over a period of 1 day, 2 days or ≥3 days)
and (2) after a known period of delay (0, 24, 48, 96 or 192 h). The results show that a combination of an increase in training
trials and an increase in number of training days affected the acquisition of landmark memory. Moreover, once the landmarks
were learnt, they became a part of long-term memory and lasted throughout the ants’ foraging lifetime. To examine visual cue
encoding behaviour, ants trained under similar conditions for 4 days were tested with (1) an identical landmark array, (2)
landmarks of the same size used in training, but placed at twice the distance from each other, and (3) landmarks whose dimensions
were doubled and placed at twice the distance from each other. In conditions (1) and (3), the ants searched extensively at
the centre of the four landmarks, suggesting that, similar to the Saharan ant (genus Cataglyphis) and the honeybee, M. bagoti too uses a snapshot to match the view of the landmarks around the nest. But contrary to the snapshot model, in condition
(2), the ants did not search extensively at the centre of the landmarks, but searched primarily 0.5 m from the landmark, the
distance from each landmark to the nest during training. We discuss how various search models fare in accounting for these
findings. 相似文献
35.
Analysis of summer and winter vegetable samples during 2002–2003 for pesticidal contamination was carried out on Gas Chromatograph-Electron
Capture Detector with capillary columns. The contamination levels of winter vegetables (average concentration of 4.57, 6.80
and 5.47 ppb respectively for Lindane, Endosulphan and DDT) were found to be slightly higher than the summer vegetables (average
concentration of 4.47, 3.14 and 2.82 ppb respectively for Lindane, Endosulphan and DDT). The concentration of these organochlorine
pesticides in summer and winter vegetables were well below the established tolerances but continuous consumption of such vegetables
even with moderate contamination level can accumulate in the receptor's body and may lead to chronic effects that could be
fatal. 相似文献
36.
V. Deepesh Virendra Kumar Verma K. Suma Swathi Ajay A. Gnanavelu M. Madhusudanan 《Journal of Material Cycles and Waste Management》2016,18(2):273-286
This study investigated the feasibility of using fresh activated sewage sludge as inoculum for the microbial valorization of segregated municipal solid waste and evaluated the quality of organic soil amendment generated. Organic fraction of municipal solid waste, which consisted of vegetative (vegetable, fruit and flower) wastes was seeded with activated sewage sludge and processed by rapid aerobic microbial treatment. Efficacy of microbial valorization process and quality of final product were assessed by physico-chemical analysis. Suitability of final product was assessed with regard to heavy metal content, pesticide residues, microbiological quality and phytotoxicity. Quality of the soil amendment generated was compared with the control product generated with a commercial microbial inoculum. Phytotoxicity experiments indicated the stimulatory effect of sewage sludge seeded soil amendment on plant growth but inhibition was observed in closed growth test due to the evolution of gaseous phytotoxic agents. The study suggests that segregated municipal solid waste can be effectively valorized with activated non-dewatered sewage sludge as inoculum and the quality of soil amendment generated was comparable to compost intended for unrestricted applications. 相似文献
37.
Ajay Batish Tejinder P Singh 《International journal of occupational safety and ergonomics》2008,14(2):223-235
This paper describes an assessment tool for analysing material handling tasks and its application for material handling tasks prevalent in engine bearing industry. After a close observation of material handling tasks spread over many days, a list of tasks and parameters/variables affecting those tasks was made. Ergonomic conditions present in these tasks and their deficiencies were then identified and on the basis of the relationships between the tasks and their affinities, categories were developed. Using the data of those categories and various conditions and parameters, an assessment tool called MHAC (material handling assessment chart) was developed. 相似文献
38.
Landslides in the Garhwal Lesser Himalaya, UP, India 总被引:1,自引:0,他引:1
The Garhwal Lesser Himalaya is one of the most fascinating segments of the Himalayan arc and in many ways quite unique in its geomorphological features and geological setting. Although it has a mild and mature topography in comparison with the Central and Outer Himalayas, with its deeply dissected valleys it is more immature than other areas such as the Himachal and Kumaon Lesser Himalayas. Debris flows, rock falls and slow mass rock movements are frequent within this part of the Himalayas. The frequent landslides in the area are controlled by the trends of the rocks and slopes, the structural features and the rock lithologies. Correlating all these factors, this paper illustrates how the slopes on the ridges parallel to the Himalayan trend (i.e. WNW–ESE) are the most susceptible for the mass failure. 相似文献
39.
Knowledge of climate change vulnerability and impacts is a prerequisite for formulating locally relevant climate change adaptation policies. A participatory approach has been used in this study to determine climate change vulnerability, impacts and adaptation aspects for the Kangsabati River basin, India. The study approach involved engaging with stakeholders representing state (sub-national), district and community levels, through an interactive brainstorming method, to understand stakeholder perceptions regarding (a) local characteristics which influence vulnerability, (b) climate change impacts and (c) relevant adaptation options. The study reveals that vulnerability varies across upstream, midstream and downstream sections of the river basin. Suggested adaptation options, in this predominantly agricultural basin, are found to be applicable across spatial scales. Stakeholder perceptions, regarding vulnerability and impacts, vary with the level of interaction, academic background and type of experience. Interaction confirms the notion that stakeholders have inherent knowledge regarding adaptation, reveals their preferences and ability to think unconventionally. We discuss limitations of the approach while demonstrating its ability to deliver locally relevant and acceptable adaptation options, which could facilitate implementation. We conclude that engaging stakeholders at multiple levels was highly effective in assessing locally relevant aspects of climate change vulnerability, impacts and applicable adaptation options in the Kangsabati River basin. Based on this assessment, a sub-basin scale is recommended for evaluating these aspects, especially for water resources and agricultural systems, through multi-level stakeholder input. 相似文献
40.
Shrivastava JN Kumar A Bhatnagar VP 《Journal of environmental biology / Academy of Environmental Biology, India》2006,27(4):705-707
Aspergillus was found as a dominant fungi to associate with brands of bindis. Among three potencies of four homeopathic drugs, Lycopodium 1M, Sulphur 1M, and Sepia 30 showed maximum inhibition zone of Aspergillus niger in inhibition zone technique. In poison food technique, Sepia 30M, Tellurium 30M, Sulphur 1M and Lycopodium 200 showed maximum percentage inhibition against A. niger 相似文献