60,043 research outputs found
Rivers Ribble and Hodder - habitat improvement
In order to improve the habitat of the Rivers Ribble and Hodder in the north west of England it is necessary to assess existing fish stocks.
To assist the Ribble Fisheries Association a test census of stock has been made on the rivers Hodder and Ribble. The fish have been taken by electro fishing techniques. The following fish were collected over six days in September 1965: dace, chub, grayling, eel, salmon and trout. This short report summarises the findings of the survey
Fisheries in a changing scene [includes section on proposed Morecambe Bay barrage scheme]: paper presented at Association of River Authorities, Annual Conference, Morecambe, 1967
The report looks at trends developing in the area of the Lancashire River Authority which will, by the turn of the century, bring tremendous pressures to bear on its natural resources, particularly land and water. It looks at difficulties maintaining an environment suitable for all, human or otherwise, including construction of energy plants and increasing population. It explores the scheme of harnessing water on Morecambe Bay, including fishery advantages and disadvantages. The report looks at fish deaths and diseases in Morecambe Bay and the Lancashire area, providing statistics
Salmon stocking by the Lancashire River Authority: investigations into the requirements and methods best suited to the area
All species of fish are able to propagate and maintain their numbers provided that no adverse influence occurs to change the compatible environment, the salmon is no exception.
Propagation of fish by artificial means has long been a subject of discussion amongst fishery workers and views have been expressed (both favourable and unfavourable) on the merits of the various methods employed.
In an attempt to discover whether artificial propagation was necessary and also to find the best methods of propagation to adopt in the various rivers, a phased programme of investigation into natural spawning efficiency and the results obtained by various methods of artificial propagation was started in the Lancashire River Board area during 1957.
The object being to seek information on:
(1) The survival of ova from natural spawnings
to the eyed and alevin stages.
(2) The population density of feeding fry (from
natural spawnings) at various intervals of development.
(3) The viability of green ova and eyed ova- when
planted artificially.
(4a) The survival to 0+ parr from implants of eyed
ova unfed fry and fed fry.
(4b) Populations per unit area of 0+ parr from various planting densities of eyed ova, unfed fry and fed fry.
Sampling stations were selected on the Rivers Ribble, Lune and Wyre watersheds for the purpose of marking and examination of natural salmon redds
MS-101: Miscellaneous 18th and 19th Century British Letter Collection
This artificial collection consists of 40 letters between various parties, written between 1771 and 1887. The letters share no single origin or destination, and are therefore divided chronologically rather than by subject or author/recipient. Included in the collection is a group of newspaper clippings from the early 20th century pertaining to the Portland Vase, as well as biographical information on the 3rd Duke of Portland.https://cupola.gettysburg.edu/findingaidsall/1148/thumbnail.jp
NASA Research in Aeropropulsion
The role of the Lewis Research Center in aeronautical propulsion is described. The state of the art in engine systems and components are discussed and some of the problems that confront the civil and military aeronautic sectors are addressed. Some of the programs that are under way are summarized with emphasis on the future needs and opportunities in aeronautics
Does “Evaluating Journal Quality and the Association for Information Systems Senior Scholars Journal Basket…” Support the Basket with Bibliometric Measures?
We re-examine “Evaluating Journal Quality and the Association for Information Systems Senior Scholars Journal Basket…” by Lowry et al. (2013). They sought to use bibliometric methods to validate the Basket as the eight top quality journals that are “strictly speaking, IS journals” (Lowry et al., 2013, pp. 995, 997). They examined 21 journals out of 140 journals considered as possible IS journals. We also expand the sample to 73 of the 140 journals. Our sample includes a wider range of approaches to IS, although all were suggested by IS scholars in a survey by Lowry and colleagues. We also use the same sample of 21 journals in Lowry et al. with the same methods of analysis so far as possible. With the narrow sample, we replicate Lowry et al. as closely as we can, whereas with the broader sample we employ a conceptual replication. This latter replication also employs alternative methods. For example, we consider citations (a quality measure) and centrality (a relevance measure in this context) as distinct, rather than merging them as in Lowry et al. High centrality scores from the sample of 73 journals do not necessarily indicate close connections with IS. Therefore, we determine which journals are of high quality and closely connected with the Basket and with their sample. These results support the broad purpose of Lowry et al., finding a wider set of high quality and relevant journals than just MISQ and ISR, and find a wider set of relevant, top quality journals
Multistage multiple-reentry turbine Patent
Multistage, multiple reentry, single rotor, axial flow turbin
Commentary: Battles Won, but War on Vet Homelessness Continues
In his second inaugural address, Abraham Lincoln called upon Americans to care for him who shall have borne the battle and for his widow and his orphan ... These words have proven so influential that the Department of Veterans Affairs has adopted them as its motto. But how well have we as a nation risen to this call? [excerpt
- …