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41.
Mishra Durgesh Kumar Bhowmik Chiranjib Bhowmik Sumit Pandey Krishna Murari 《Environmental science and pollution research international》2022,29(29):43556-43587
Environmental Science and Pollution Research - Research on phase change material (PCM) for thermal energy storage is playing a significant role in energy management industry. However, some hurdles... 相似文献
42.
Singh Tripti Pal Dan Bahadur Bhatiya Ashok Kumar Mishra Pradeep Kumar Hashem Abeer Alqarawi Abdulaziz Abdullah AbdAllah Elsayed Fathi Gupta Vijai Kumar Srivastava Neha 《Environmental science and pollution research international》2022,29(41):61811-61820
Environmental Science and Pollution Research - Over the years, biodegradation has been an effective technique for waste water treatment; however, it has its own limitations. In order to achieve a... 相似文献
43.
Begum Shamima Mishra Soumya Ranjan Ahmaruzzaman Md. 《Environmental science and pollution research international》2022,29(58):87347-87360
Environmental Science and Pollution Research - The n–n-type ZnO–SnO2 nanocomposite was fabricated using malic acid following a simple one-pot co-precipitation method. The fabricated... 相似文献
44.
A distinct seasonal variation in the enzyme activities and carbon dioxide evolution in soil, with a maximum in summer, was observed in soil treated with carbaryl and in control soil. There was no significant difference in the rate of enzyme activity between 0 and 10 cm and 10 and 20 cm depth of soil. Carbaryl insecticide applied at a normal agricultural dose did not have any inhibitory effect on soil enzyme activity, or on the rate of CO(2) evolution. However, the cellulase activity was greater in the surface soil of the control plot than in the treated plot. 相似文献
45.
Removal of congo red from aqueous solution by bagasse fly ash and activated carbon: kinetic study and equilibrium isotherm analyses 总被引:7,自引:0,他引:7
Present investigation deals with the utilisation of bagasse fly ash (BFA) (generated as a waste material from bagasse fired boilers) and the use of activated carbons-commercial grade (ACC) and laboratory grade (ACL), as adsorbents for the removal of congo red (CR) from aqueous solutions. Batch studies were conducted to evaluate the adsorption capacity of BFA, ACC and ACL and the effects of initial pH (pH(0)), contact time and initial dye concentration on adsorption. The pH(0) of the dye solution strongly affected the chemistry of both the dye molecules and BFA in an aqueous solution. The effective pH(0) was 7.0 for adsorption on BFA. Kinetic studies showed that the adsorption of CR on all the adsorbents was a gradual process. Equilibrium reached in about 4h contact time. Optimum BFA, ACC and ACL dosages were found to be 1, 20 and 2 g l(-1), respectively. CR uptake by the adsorbents followed pseudo-second-order kinetics. Equilibrium isotherms for the adsorption of CR on BFA, ACC and ACL were analysed by the Freundlich, Langmuir, Redlich-Peterson, and Temkin isotherm equations. Error analysis showed that the R-P isotherm best-fits the CR adsorption isotherm data on all adsorbents. The Freundlich isotherm also shows comparable fit. Thermodynamics showed that the adsorption of CR on BFA was most favourable in comparison to activated carbons. 相似文献
46.
Nikhilesh Bishoyee Anshuman Dash Anshuman Mishra Sitakant Patra S. S. Mahapatra 《Journal of Polymers and the Environment》2010,18(3):177-187
Fly ash is a solid waste generated in huge quantities from coal fired thermal power stations during the combustion of coal.
In India, less than half of this is used as a raw material for concrete manufacturing and construction; the remaining is directly
dumped on land side as land fill or simply piled up. Only a small fraction of it is used in development of high valued product.
Due to environmental regulations, new ways of utilizing fly ash are being explored in order to safeguard the environment and
provide useful ways for its utilization and disposal. With its richness in various metal oxides, it has tremendous potential
to be utilized as a filler material in polymer composites. These days glass reinforced polyester composites find widespread
application in erosive environment due to several advantages like high wear resistance, strength-to-weight ratio, and low
cost. The cost of the composites can be further brought down using cheaper filler materials. To this end, this work uses fly
ash in composite making and thereby suggests a new way of better utility of this industrial waste. It includes the processing,
characterization and study of the erosion behavior of a class of such fly ash filled polyester-glass fiber composites. The
engineering application of composites demands that it should have high wear resistance, low density and high tensile strength.
In order to assess the behavior of composites satisfying multiple performance measures, a grey-based Taguchi approach has
been adopted. After thorough analysis of factors, optimal factor settings have been suggested to improve multiple responses
viz., erosive wear rate, density, flexural strength and tensile strength. This technique eliminates the need for repeated
experiments; thus saves time and material. The systematic experimentation leads to determination of significant process parameters
and material variables that predominantly influence the multiple responses. 相似文献
47.
Summary A comparative study of Survey of India topo-maps of 1929 and land satellite imageries in False Colour Combination (FCC) of
1975 indicates a loss of 43% and 46% of the reserved forest around Sambalpur and Jharsuguda respectively, besides other forest
types in a radius of twenty miles. Deforestation is found to be an accelerating process where the rate of loss is estimated
to be more during 1970–75 and 1960–70 in comparison to 1950–60 from a semilogarithmic trend curve between 1929 and 1975. This
curve also fits to a hypothesis that the rate of deforestation is faster after 1950 (after developmental plan periods came
into force).
An analysis of the climatic data indicates a decrease in rainfall and number of rainy days, and morning relative humidity.
The mean minimum and maximum temperature, evening relative humidity and atmospheric pressure show increasing trends.
Relationships between forest loss and climatic parameters are significant for morning relative humidity, rainy days, maximum
temperature and atmospheric pressure.
Considering the loss of storage capacity of the Hirakud reservoir due to severe deforestation in the catchment area, suggestions
are given for natural forest preservation.
Arttabandhu Mishra graduated in Science (Zoology Honours) and Education from Utkal University; postgraduated from Berhampur
University, India. At present he is a Lecturer in School of Life Sciences, Sambalpur University and Secretary of Orissa Environmental
Consciousness Society. His fields of interests are Productivity and Energetics of Forest Ecosystems, Environmental Education
and Community Education. He has published seven papers on the above fields and a number bf popular articles. He tries to use
folk literature as media to carry scientific messages.
Madhab C. Dash, obtained his B.Sc. (Hens), M.Sc. from Utkal University, India and Ph.D. from University of Calgary, Canada.
At present he is Professor and Head, School of Life Sciences, Sambalpur University, a fellow of the Zoological Society of
India, the National Institute of Ecology and the National Academy of Sciences, India. His major areas of research and writing
are on the functional role of soil organisms in the decomposer subsystem of ecosystems, He has published seventy-five papers
on taxonomy, biology, population ecology, metabolic functions, energy flow modelling, role in soft fertility and waste conditioning
ability of Oligochaetes, nematodes, protozoa and soil microorganisms. Professor Dash has contributed specialised chapters
in major treaties published by Cambridge University Press, UK; John Wiley and Sons, USA; and Academic Press, New York, USA. 相似文献
48.
Krishna?MalakarEmail author Trupti?Mishra Anand?Patwardhan 《Environment, Development and Sustainability》2018,20(2):841-864
Provision of drinking water is considered to be an essential public service. Ensuring adequate water supply remains a challenge in Indian cities that are experiencing rapid growth and often exhibit a mismatch between increasing demands and inadequate supply infrastructure. This study quantifies the existing inequality in water supply within Indian cities through Lorenz curve, Gini coefficient as well as Theil indices. Two types of Theil indices are estimated to gain different perspectives: water supply and population-weighted. Both the Theil indices are disaggregated, according to economic and regional categorisation of the cities, to explore the within- and between-group inequality. The water supply and population-weighted Theil indices provide different outlook of the inequality amongst the cities. But the population-weighted index is often better and pragmatic. Further, the inequality in access to tap water in India is studied by estimating modified Lorenz curves and Theil indices. Again, the Theil indices are decomposed into within and between components according to economic and regional grouping of states. The results suggest that there is disparity in supply of water in India, and infrastructure has to be boosted to meet the growing demand. This study is a step towards quantification of water supply inequality. The approach used in the study can contribute to monitoring of water supply equity as well as in formulating sustainable and equitable water policies. 相似文献
49.
50.
Krishna Giri J. P. N. Rai Shailesh Pandey Gaurav Mishra Rajesh Kumar Deep Chandra Suyal 《Chemistry and Ecology》2017,33(9):817-825
Isoproturon (IPU)-degrading soil bacteria were isolated from herbicide-applied wheat fields. These isolates were identified using cultural, morphological, biochemical and 16S rRNA sequencing methods. 16S rRNA sequences of both the bacterial isolates were compared with NCBI GenBank data base and identified as Bacillus pumilus and Pseudoxanthomonas sp. A soil microcosm study was carried out for 40 days in six different treatments. Experimental results revealed maximum 95.98% IPU degradation in treatment 6 where bacterial consortia were augmented in natural soil, followed by 91.53% in treatment 5 enriched with organic manure as an additional carbon source. However, only 14.03% IPU was degraded in treatment 1 (control) after 40 days. In treatments (2–4), 75.59%, 70.92% and 77.32% IPU degradation was recorded, respectively. IPU degradation in all the treatments varied significantly over the control. 4-Isopropylaniline was detected as IPU degradation by-product in the medium. The study confirmed that B. pumilus and Pseudoxanthomonas sp. performed effectively in soil microcosms and could be employed profitably for field-scale bioremediation experiments. 相似文献