Mersey & Weaver Fisheries Advisory Committee 21st June, 1978

This is the report from the Mersey and Weaver Fisheries Advisory Committee meeting, which was held on the 21st June, 1978. It covers information on the monitoring of radioactivity in migratory fish, fishing offences and prosecutions and the income from sale of rod and line licences. It also includes the report by the area fisheries officer on river conditions and fishing, and an update on Tintwistle hatchery and Worthington Stock Pools. Included in this report is also the pollution incidents, fish mortalities, fisheries management and the stocking numbers of coarse fish, brown trout and rainbow trout by the Angling Associations. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South & West Cumberland Fisheries Advisory Committee 26th June, 1978

This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 26th June, 1978. It covers information on the monitoring of radioactivity in migratory fish, fishing offences and prosecutions and the income from the sale of rod and line licences. It also includes the review of discharge consent conditions, illegal netting and water quality. It also covers the report by the area fisheries officer on river conditions and fishing, migratory fish movements, and an update on Holmwrangle hatchery. Included in this report is also the fish mortalities, survey and research work on Ennerdale Lake, In-River engineering works on the Derwent, Calder, Irt and Esk, and the stocking numbers of salmon and sea trout by the Water Authority. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Eden and District Fisheries Advisory Committee 27th June, 1978

This is the report from the Eden and District Fisheries Advisory Committee meeting, which was held on the 27th June, 1978. It covers information on the monitoring of radioactivity in migratory fish, fishing offences and prosecutions, and the income from the sale of rod and line licences. Also included is the review of discharge consent conditions and illegal netting, and the report by the area fisheries officer. This covers information on river conditions and fishing, migratory fish movements, Holmwrangle hatchery, fish mortalities, fish diseases, coarse fish removals from Brunstock Beck, and In-River engineering works. Also included in the report is the stocking numbers of salmon and sea trout by the Water Authority. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 28th June, 1978

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 28th June, 1978. It covers information on the monitoring of radioactivity in migratory fish, fishing offences and prosecutions, the income from the sale of rod and line licences, the review of discharge consent conditions, illegal netting and issues relating to Worthington and Stocks reservoir. It also covers the report by the area fisheries officer on river conditions and fishing, migratory fish movements, Langcliffe hatchery, fish mortalities and stocking numbers of brown trout, rainbow trout and coarse fish by the Angling Associations. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Lune, Wyre & Furness Fisheries Advisory Committee 3rd July, 1978

This is the report from the Lune, Wyre and Furness Fisheries Advisory Committee meeting, which was held on the 3rd July, 1978. It covers information on the monitoring of radioactivity in migratory fish, fishing offences and prosecutions, the income from sale of rod and line licences, the review of discharge consent conditions, illegal netting, the Morecambe and Heysham sewerage scheme and fish counting work. It also covers the report by the area fisheries officer on river conditions and fishing for Lune, Furness, Wyre and tributaries. Also covered in the report is information on migratory fish movements, fish monitoring stations, Middleton hatchery, fish mortalities, fish diseases, biological work and stocking numbers of brown trout, rainbow trout and coarse fish by the Angling Associations. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Lune, Wyre and Furness Fisheries Advisory Committee 15th January, 1979

This is the report from the Lune, Wyre and Furness Fisheries Advisory Committee meeting, which was held on the 15th January, 1979. It covers information on the proposed net limitation order and new fishery byelaws for the Rivers Lune and Wyre, the proposed byelaws for Skerton Weir, issues with the electric fish diversion screens for the Lune and the Wyre, and the monitoring of levels of radioactivity in migratory fish. The section on the report by the area fisheries officer on fishing activities includes river conditions and fishing for the Lune, Wyre and Furness and figures for migratory fish counted at Haverthwaite on the River Leven, Broadraine, Forge Weir and Skerton Weir on the River Lune and Duddon Hall. Also included is an update on Middleton Hatchery, fish disease, fish mortalities and net catch figures for 1978 of grilse, salmon and sea trout for the Lune, Kent, Leven and Duddon. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

Caracterização de reservatórios não convencionais Shale Gas na Formação Barreirinha Bacia do Amazonas

Os folhelhos pretos devonianos da Formação Barreirinha caracterizamse pela alta radioatividade na porção basal, grande extensão areal, espessura e profundidade de soterramento variável que vão de exposição na superfície até mais de 3000 m. Eles são as principais rochas geradoras do sistema petrolífero convencional da Bacia do Amazonas, e recentemente foram consideradas como promissores plays de gás não convencional. Folhelhos são geralmente caracterizados por uma matriz fechada, que faz com que sejam relativamente impermeáveis em relação ao fluxo de gás, a menos que ocorram fraturas, e dependendo das suas características geológicas e geoquímicas podem funcionar com um Sistema Petrolífero autossuficiente, atuando tanto como rocha fonte, quanto como reservatório de gás (reservatório Shale Gas). Assim, o gás natural termogênico ou biogênico gerado pode ser armazenado em folhelhos ricos em matéria orgânica na forma livre, adsorvida, ou em estado dissolvido. Em contraste com os sistemas petrolíferos convencionais, reservatórios Shale Gas, possuem mecanismos de aprisionamento e armazenamento únicos, sendo necessária a utilização de técnicas de avaliações específicas. No entanto, folhelhos prolíficos geralmente podem ser reconhecidos a partir de alguns parâmetros básicos: arquitetura geológica e sedimentar, propriedades geoquímicas e petrofísicas e composição mineralógica. Tendo em vista a carência de pesquisas de caráter descritivo, com cunho exploratório dos folhelhos geradores da Formação Barreirinha, esta dissertação tem como objetivo introduzir uma metodologia de identificação de intervalos de folhelho gerador com potencial para reservatório Shale Gas. Começando com uma investigação regional sobre o contexto geológico e sedimentar, seguido de uma avaliação abrangente enfocando as características geoquímicas, petrofísicas e litofácies dos folhelhos a partir da integração de parâmetros obtidos de perfis geofísicos de poço, análises geoquímicas e aplicação dos conceitos de Estratigrafia de Sequencia.

Impact Assesment of ionising Radiation on Wildlife

This is the Impact Assessment of ionising Radiation on Wildlife document produced by the Environment Agency in 2001. This report describes the behaviour and transport of radionuclides in the environment, considers the impact of ionising radiation on wildlife, and makes recommendations on an approach for the Impact assessment of ionising radiation on wildlife for England and Wales. The assessment approach focuses on three ecosystems representative of those considered potentially most at risk from the impact of authorised radioactive discharges, namely a coastal grassland (terrestrial ecosystem); estuarine and freshwater ecosystems. The likely scale of the impact on wildlife is also assessed in light of a preliminary analysis based on this assessment approach. The report demonstrates the behaviour and transfer of radionuclides in a number of different ecosystem types. Particular emphasis is placed on exposure pathways in those ecosystems most likely to be impacted by the authorised discharges of radioactivity within England and Wales. The use of biomarker techniques is reviewed in the report, and their application to the study of exposure to multiple contaminants is discussed.

鱼类对藻类消化吸收的研究——(Ⅰ)白鲢对斜生栅藻的消化与吸收

斜生栅藻对~(32)磷有很强的吸收积累能力,吸收率在98％以上。白鲢对用3种不同强度的~(32)磷标记的斜生栅藻中的~(32)磷也有较高的摄取率,平均在43.59—59.78％之间。~(32)磷在白鲢各组织中积累和分布的比放射性(specific radioactivity)大小顺序为:肠>肝>骨>肉>脑。白鲢各组织的总放射性(total radioactivity)大小顺序为:肉>肠>骨>肝>脑,肌肉中~(32)磷的含量占各组织中~(32)磷的48—70％,说明白鲢能消化吸收斜生栅藻。

FATE OF 2 PHENYLBENZOYLUREA INSECTICIDES IN AN ALGAE CULTURE SYSTEM (SCENEDESMUS-SUBSPICATUS)

The bioaccumulation, elimination and degradation of C-14-labelled diflubenzuron (DFB) and of 1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea (CCU) was studied in a laboratory algae culture system of scenedesmus subspicatus. Algae were exposed at an initial concentration of 200 mug/l for seven days. Neither substance had an inhibitory effect on the growth of algae. The half life of DFB and CCU was 3 and 1 days, respectively, as measured by HPLC. The distribution of C-14 between medium and algae was measured. In the case of DFB radioactivity in algae increased steadily and levelled off at approximately 60 % after 5 days. Due to algae growth BCF values decreased from 4310 to 889 for DFB and from 6719 to 304 for CCU during the exposure period. The relationship between algae density and bioconcentration could be correlated by an adsorption isotherm. Elimination of both compounds was rapid during the first hours.

Theoretical Analysis and New Formulae for Half-Lives of Proton Emission

The proton radioactivity half-lives of spherical proton emitters are calculated by the cluster model with the contribution of a centrifugal potential barrier considered separately. The results are compared with the experimental data and other theoretical data, and good agreement is found for most nuclei. In addition, two formulae are proposed for the proton decay half-life of spherical proton emitters through the least squares fit to the experimental data available, and could reproduce the experimental half-lives successfully.

Experimental study of two-proton correlated emission from S-29 excited states

An experiment of a S-29 beam bombarding a Au-197 target at an energy of 49.2 MeV/u has been performed to study the two-proton correlated emission from S-29 excited states. Complete-kinematics measurements were carried out in the experiment. The relative momentum, opening angle, and relative energy of two protons, as well as the invariant mass of the final system, were deduced by relativistic-kinematics reconstruction. The Si-27-p-p coincident events were picked out under strict conditions and the phenomenon of p-p correlations was observed among these events. The mechanisms of two-proton emission were analyzed in a simple schematic model, in which the extreme decay modes like He-2 cluster emission, three-body phase-space decay, and two-body sequential emission were taken into account. Associated with the Monte Carlo simulations, the present results show that two protons emitted from the excited states between 9.6 MeV and 10.4 MeV exhibit the features of He-2 cluster decay with a branching ratio of 29(-11)(+10)%.

Theoretical study on spherical proton emission

The proton radioactivity half-lives of spherical proton emitters are investigated within a generalized liquid drop model (GLDM), including the proximity effects between nuclei in a neck and the mass and charge asymmetry. The penetrability is calculated in the WKB approximation and the assault frequency is estimated by the quantum mechanism method considering the structure of the parent nucleus. The spectroscopic factor is taken into account in half-life calculation, which is obtained by employing the relativistic mean field (RMF) theory. The half-lives within the GLDM are compared with the experimental data and other theoretical values. The results show that the GLDM works quite well for spherical proton emitters when the assault frequency is estimated by the quantum mechanical method and the spectroscopic factor is considered.

Structure of upper-g(9/2)-shell nuclei and shape effect in the Ag-94 isomeric states

Using a shell model which is capable of describing the spectra of upper g(9/2)-shell nuclei close to the N = Z line, we study the structure of two isomeric states 7(+) and 21(+) in the odd-odd N = Z nucleus Ag-94. It is found that both isomeric states exhibit a large collectivity. The 7(+) state is oblately deformed, and is suggested to be a shape isomer in nature. The 21(+) state becomes isomeric because of level inversion of the 19(+) and 21(+) states due to core excitations across the N = Z = 50 shell gap. Calculation of spectroscopic quadrupole moment indicates clearly an enhancement in these states due to the core excitations. However, the present shell model calculation that produces the 19(+)-21(+) level inversion cannot accept the large-deformation picture of Mukha et al.