发布求助
文献互助 智能选刊 最新文献

Environmental letters最新文献

筛选
英文 中文
Interfaces of steam electric power plants with aquatic ecosystems. 蒸汽发电厂与水生生态系统的界面。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509435866
W T Waller
{"title":"Interfaces of steam electric power plants with aquatic ecosystems.","authors":"W T Waller","doi":"10.1080/00139307509435866","DOIUrl":"https://doi.org/10.1080/00139307509435866","url":null,"abstract":"Growth and reproduction may be stimulated by increased temperature in the cooling system and thermal plume during seasons when ambient water temperature is less than optimum, but growth, reproduction and survival are reduced when the elevated temperatures become excessive. Some fish species congregate in the warm thermal plumes during cold seasons but are excluded from this living space by temperatures above their preference in the summer. However, the warm refuge provided by a thermal plume in cold seasons can be a death trap if a power plant shuts down suddenly and exposes the fish to cold shock exceeding their lower thermal tolerance limits. The factors that tend to affect different segments of the biota are discussed.","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 4","pages":"405-30"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509435866","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12368906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effects of de-icing salt on ground water characteristics. 除冰盐对地下水特性的影响。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509437440
J E O'Brien, J C Majewski
{"title":"Effects of de-icing salt on ground water characteristics.","authors":"J E O'Brien,&nbsp;J C Majewski","doi":"10.1080/00139307509437440","DOIUrl":"https://doi.org/10.1080/00139307509437440","url":null,"abstract":"<p><p>The effect of \"road salt\" on the characteristics of Massachusetts drinking water supplies has been significant and cumulative rather than transient or seasonal. De-icing salt is essentially all sodium chloride. Calcium chloride accounted for only three percent of the total salt used. However, hardness content, as well as sodium ion concentration, has increased greatly in ground waters in the past decade. The changing composition of our water supplies has agricultural, economic, and public health implications. This study attempts to quantify the stoichiometry of these changes in concentration, which are in part due to an ion-exchange mechanism in the soil.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"8 4","pages":"303-13"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509437440","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11453759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
The photo-reduction of SO2. 二氧化硫的光还原。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509435856
E Y Eickenroht, E M Gause, J R Rowlands
{"title":"The photo-reduction of SO2.","authors":"E Y Eickenroht,&nbsp;E M Gause,&nbsp;J R Rowlands","doi":"10.1080/00139307509435856","DOIUrl":"https://doi.org/10.1080/00139307509435856","url":null,"abstract":"","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 3","pages":"279-91"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509435856","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11390759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The occurrence of mercury in amphibia. 汞在两栖动物中的出现。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509437428
A R Byrne, L Kosta, P Stegnar
{"title":"The occurrence of mercury in amphibia.","authors":"A R Byrne,&nbsp;L Kosta,&nbsp;P Stegnar","doi":"10.1080/00139307509437428","DOIUrl":"https://doi.org/10.1080/00139307509437428","url":null,"abstract":"<p><p>Studies have been made of the distribution of mercury and its occurrence as methylmercury in the organs of amphibia collected from different sites mainly in Slovenia, Yugoslavia, including the area around the mercury mine at Idrija. Liver accumulates the highest amounts of mercury, up to 2 ppm in apparent background areas, with values up to 0.5 ppm in muscle, where virtually all mercury is present in the methyl form. Results are reported for some other trace elements in liver. Amphibia may provide useful monitors of the occurrence and spread of mercury contamination.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"8 2","pages":"147-55"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509437428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12311386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Metal concentrations in the sewage, effluents, and sludges of some southern Ontario wastewater treatment plants. 安大略省南部一些污水处理厂的污水、流出物和污泥中的金属浓度。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509437458
B G Oliver, E G Cosgrove
{"title":"Metal concentrations in the sewage, effluents, and sludges of some southern Ontario wastewater treatment plants.","authors":"B G Oliver,&nbsp;E G Cosgrove","doi":"10.1080/00139307509437458","DOIUrl":"https://doi.org/10.1080/00139307509437458","url":null,"abstract":"<p><p>Aluminum, barium, berylliu, bismuth, cadmium, chromium, cobalt, copper, iron, lead, manganese, mercury, molybdenum, nickel, silver, strontium, vanadium and zinc concentrations in the sewage, effluents and sludges of ten southern Ontario wastewater treatment plants are reported. The efficiency for metal removal by a conventional activated sludge plant was determined. The effect of metal concentrations in receiving waters from residual metals in sewage effluents is discussed. The environmental hazards of disposing of sewage sludges with high metal content on agricultural land is considered.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 1","pages":"75-90"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509437458","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12360536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
A new mechanical disruption technique for organic enrichment of hi-vol samples. 大体积样品有机富集的机械破坏新技术。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509435813
J L Bove, V P Kukreja
{"title":"A new mechanical disruption technique for organic enrichment of hi-vol samples.","authors":"J L Bove,&nbsp;V P Kukreja","doi":"10.1080/00139307509435813","DOIUrl":"https://doi.org/10.1080/00139307509435813","url":null,"abstract":"<p><p>A mechanical disrupting technique capable of extracting the organic content from a high volume fiber glass filter is described. The method is rapid, inexpensive and reproducible.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"10 2","pages":"89-96"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509435813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12381186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Some of the growth characteristics of Gonyaulax tamarensis isolated from the gulf of maine. 缅因湾分离的塔玛氏Gonyaulax tamarensis的一些生长特性。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509435844
E J Cole, C M Yentsch, C S Yentsch, M Salvaggio
{"title":"Some of the growth characteristics of Gonyaulax tamarensis isolated from the gulf of maine.","authors":"E J Cole,&nbsp;C M Yentsch,&nbsp;C S Yentsch,&nbsp;M Salvaggio","doi":"10.1080/00139307509435844","DOIUrl":"https://doi.org/10.1080/00139307509435844","url":null,"abstract":"","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 2","pages":"153-66"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509435844","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12415863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Taxonomic difficulties in red tide and paralytic shellfish poison studies: the "tamarensis complex" of Gonyaulax. 赤潮和麻痹性贝类中毒研究的分类困难:Gonyaulax的“tamarensis复合体”。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509435840
F J Taylor
{"title":"Taxonomic difficulties in red tide and paralytic shellfish poison studies: the \"tamarensis complex\" of Gonyaulax.","authors":"F J Taylor","doi":"10.1080/00139307509435840","DOIUrl":"https://doi.org/10.1080/00139307509435840","url":null,"abstract":"<p><p>The type illustrations of the dinoflagellate Gonyaulax tamarensis contain an apparent reversal of the epithecal plates. Furthermore a culture from the type locality has been found not to be toxigenic. These two features have led a recent author to doubt the appropriateness of the allocation of toxic populations in the North Atlantic to this species or a variety of it (var. excavata Braarud). The latter has been raised to the status of a distinct species but the wrong name has been applied to it (G. excavata) as, according to the rules of priority, it should be G. phoneus (Woloszynska & Conrad) nov. comb. A history of this confused situation is provided. The criteria by which other similar species are recognised are summarised. The necessity for further study on the specific distinction of these taxa is stressed. G. conjuncta has been so inadequately described or rejected. Variability in the plate pattern of a culture of G. tamarensis var. excavata from British Columbia is illustrated and its bearing on the taxonomy of the group discussed. The presence of this toxic variety on the west coast of N. America is a new record for the Pacific Ocean.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 2","pages":"103-19"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509435840","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12416059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 32
Implications of dinoflagellate life cycles on initiation of Gymnodinium breve red tides. 鞭毛藻生命周期对短毛裸子赤潮形成的影响。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509435842
K A Steidinger
{"title":"Implications of dinoflagellate life cycles on initiation of Gymnodinium breve red tides.","authors":"K A Steidinger","doi":"10.1080/00139307509435842","DOIUrl":"https://doi.org/10.1080/00139307509435842","url":null,"abstract":"<p><p>Florida Gymnodinium breve red tides are initiated in off-shore (approx. 18 to 74 km) coastal waters primarily in late summer-fall months. Past culture studies by W. B. Wilson suggested that this species could have a sexual cycle, inferring the possibility of an alternation of cytological and/or morphological generations. This possibility is further supported by numerous recent advances in dinoflagellate life cycle work which are reviewed in detail. If G. breve has a benthic resting stage (hypnozygote), as is suggested, then seed populations or seed \"beds\" can possibly be pinpointed and mapped.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 2","pages":"129-39"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509435842","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12416061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 90
Aerobic photodegradation of X(N) chelates of (ethylenedinitrilo)tetraacetic acid (EDTA): implications for natural waters. (乙二腈)四乙酸(EDTA)的X(N)螯合物的有氧光降解:对天然水体的影响。
Environmental letters Pub Date : 1975-01-01 DOI: 10.1080/00139307509437453
H B Lockhart, R V Blakeley
{"title":"Aerobic photodegradation of X(N) chelates of (ethylenedinitrilo)tetraacetic acid (EDTA): implications for natural waters.","authors":"H B Lockhart,&nbsp;R V Blakeley","doi":"10.1080/00139307509437453","DOIUrl":"https://doi.org/10.1080/00139307509437453","url":null,"abstract":"<p><p>The behavior of several metal chelates [X(N)] of 1-14C-(ethylenedinitrilo) tetraacetic acid [EDTA] under irradiation from a wide spectrum Xenon arc lamp has been studied. In static tests at pH 4.5, chelates of Mn(II), Fe(II) and Co(II) photodegraded to give 14CO2 and CH2O. Chelates of Na(I), Mg(II), Ca(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) did not exhibit any significant photodegradation as measured by 14CO2 evolution. It is concluded that the photodegradation of Fe(III)-EDTA by sunlight will prevent EDTA build up in natural waters.</p>","PeriodicalId":11979,"journal":{"name":"Environmental letters","volume":"9 1","pages":"19-31"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00139307509437453","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11455752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 30
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信