摘要:

During an annual spring‐summer trapping program conducted in Maryland, (Z,Z) and (E,Z)‐3,1 3‐octadecadien‐l‐ol acetate (ODDA) were evaluated as baits for attracting Sesiidae species. Later, two different types of trap (Jackson and 3HB) were compared for effectiveness in luring or attracting the Sesiidae. Smaller numbers of adult clearwing moths and larger numbers of other lepidoptera were attracted to the baits dispensed from 3HB traps compared to Jackson traps. Over 5500 adult Sesiidae were trapped that season.

ISSN:0360-1226    

DOI:10.1080/10934528309375128

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

The sulphur content in the leaves ofLaurus nobilisL., and in soil was measured to estimate the level of SO2pollution in the Botanical Garden of Naples University. Annual samples were taken during 1980, 1981, and 1982 at 10 locations to obtain an overall view of the incidence of urban pollution.

ISSN:0360-1226    

DOI:10.1080/10934528309375129

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Based on the experimental data obtained for nitrification in a fixed film packed bed reactor, a rate expression of the following form has been developed under the shock load of trivalent arsenic, hexavalent chromium and fluoride, in pair:

ISSN:0360-1226    

DOI:10.1080/10934528309375130

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Measurements of the Total Organic Halogens (TOX) produced in the National WaterCarrier(NWC) of Israel after disinfection with chlorine dioxide revealed that compared to chlorine, ClO2forms only a very small amount of chlororganic compounds. Mixtures of Cl2and ClO2that have been reported to reduce the concentrations of both the chlorinated organics as well as the chlorite Ions produced by ClO2, were found not to be very useful because of the fact that high bromide concentrations are present In the NWC. Therefore high ratios of ClO2/Cl2are needed to reach a significant reduction in Trihalomethanes (THM's). The amount of THM's can however be satisfactorily reduced when ClO2is introduced a few hours before chlorine.

ISSN:0360-1226    

DOI:10.1080/10934528309375131

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Total aerobic bacteria, total coliforms, faecal coliforms and faecal streptococci were monitored in water samplescollected from twelve stations located in two water sources in Baghdad city. The samples were collected at a monthly intervals during the period December 1980 ‐December1981.

ISSN:0360-1226    

DOI:10.1080/10934528309375132

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

With the present state of knowledge of red tides, particularly in Florida coastal waters, the major challenge may be to explain why they do not occur more often. It appears that at least five major factors are responsible for this blessing. These are: (1) environmental stress, (2) enemy organisms, (3) currents and other hydrographic factors, (4) possibly critical‐nutrient limitation, and (5) photodynamic action. The significance of these factors are reviewed as a guide to potential management strategies.

ISSN:0360-1226    

DOI:10.1080/10934528309375133

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

ISSN:0360-1226    

DOI:10.1080/10934528309375134

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

The computerized Statistical Analysis System (SAS) for probit analysis was used in analyzing radiation dose response data. Sixty female and 60 male Sprague‐Dawley rats, aged 80±5 days and weighing 200–250 g each, were randomly assigned to six groups of 10 animals each. Each rat received a single total‐body exposure (rads) of Co gamma radiation of 0, 675, 700, 725, 750, or 775 at a dose rate of 304 rads/min. Mortalities were recorded during a 30‐day interval.

ISSN:0360-1226    

DOI:10.1080/10934528309375135

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

摘要:

Extracellular metabolites from cultures of the marine green algaNannochloris sp. were extracted with chloroform. The combined extracts ("Aponin"). known to be cytolytic toward the red tide organism,Ptychodiscus brevis, were tested for activity against isolated canine tracheal smooth muscle. The extracts were without discernable effect on the contractile response (at concentrations up to 10.0 μg per ml). The absence of an effect, in this instance, is particularly significant inasmuch as the cytolytic activity of aponin could be responsible for release of airborne toxins ofP brevis, and these toxins may cause coughing, sneezing, and watering eyes in normal persons, as well as wheezing in asthmatic patients. The absence of an effect of aponin provides further evidence that aponin is a potentially useful red‐tide management agent.

ISSN:0360-1226    

DOI:10.1080/10934528309375136

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor

ISSN:0360-1226    

DOI:10.1080/10934528309375137

出版商:Taylor & Francis Group    

年代:1983

数据来源: Taylor