Life before and after implementation of an acoustic noise reduction enclosure

2005 ◽  
Vol 109 (1092) ◽  
pp. 65-74
Author(s):  
B. Timmins
Keyword(s):  
Wind Tunnel ◽  
Noise Reduction ◽  
Acoustic Noise ◽  
Financial Health ◽  
Two Phase ◽  
North West ◽  
The North ◽  
Close Proximity ◽  
Before And After ◽  
Increase Productivity

Abstract This paper looks back on the designs and ambitions of ARA in resolving a long term acoustic noise problem which threatened ARA with closure. This paper today briefly looks back to the original issues but deals more fully with the later phases of a two phase project implementation and construction. ARA is now a truly ‘silent site’, where closure was once threatened, ARA has achieved the implementation of a bespoke noise reduction enclosure where 24-hour running has proved to be a reality. This paper looks at the design and construction phases, the ‘before and after’ noise footprints and at some of the financial benefits ARA has achieved. The ARA transonic wind tunnel is sited on an industrial estate on the north west perimeter of Bedford. When it was first built it was on an original farm site with no appreciable residential houses in close proximity. Since the early 1950s there has been considerable residential development around the ARA site resulting in the local householders complaining about the wind tunnel acoustic noise. In early 1999 ARA was obliged to consider several options for noise reduction measures to reduce the noise to within UK government statutory requirements. This paper deals briefly with the original noise nuisance characteristics and footprint, the noise reduction design and method that ARA selected and shows the construction phases, the further noise treatment ARA had to do on other major ancillary equipment to make ARA a truly quiet industrial site. The paper shows how ARA has utilised the resulting benefits of these investments to increase productivity and reduce costs, and the influence it has had on ARA’s financial health.

scholarly journals A Series of Humanly-Fashioned Flints Found in the Cliffs and on the Shore at Mundesley, Norfolk

1920 ◽  
Vol 3 (2) ◽  
pp. 219-243
Author(s):  
J. Reid Moir
Keyword(s):  
Present Author ◽  
The South ◽  
North West ◽  
The North ◽  
Close Proximity ◽  
Made In

When visiting Mundesley, in Norfolk, in September, 1916, the present author found upon the shore, in close proximity to an exposure of clay which he now considers to be referable to the Cromer Forest Bed Series, a very finely-made and large flint flake, of human manufacture. This discovery induced him to again visit Mundesley, and during this year (1919) close upon three weeks have been spent in an examination of the stretch of cliffs and shore lying between Trimingham, to the north-west of Mundesley, and Bacton, which lies to the south-east.The author's researches have been greatly helped by the co-operation of three friends, Professor A. S. Barnes, Mr. Walter B. Nichols, and the Hon. Robert Gathorne-Hardy, who accompanied him to Mundesley, and to whom he offers his warmest thanks. He would, however, wish to make it clear that these gentlemen are in no way responsible for the statements made in this paper. For these the author is solely responsible.

scholarly journals Four Departmental Asylums in the North-West of France

1874 ◽  
Vol 19 (88) ◽  
pp. 541-552
Author(s):  
J. Wilkie Burman
Keyword(s):  
Small Town ◽  
Great Majority ◽  
Waste Paper ◽  
Maintenance Rate ◽  
North West ◽  
The North ◽  
Walking Tour ◽  
Large Numbers ◽  
Close Proximity ◽  
Lunatic Asylums

In the course of a walking tour, during last summer, I visited, en route, four of the Departmental Lunatic Asylums in the North-West of France, principally with a view to see how they would stand comparison with our own Provincial or County Asylums. Such a comparison, however, could scarcely, I find, be made on a fair basis; for though, undoubtedly, the great majority of the patients in the French Departmental Asylums are paupers, and maintained at the expense of the several Departments, yet, in all, there are associated with these paupers large numbers of pensionnaires, who are maintained by theirfriends and divided into four or five classes, and treated according to their rate of payment. It is obvious, moreover, that the better general and special arrangements, due to and supported by the higher rates of payment of the pensionnaires, would prevent such associated asylums as these from being fairly compared, as to their tout ensemble, with our own County Asylums—in which, as a rule, the patients are all paupers, and chargeable to the different unions, and in which the arrangements are for paupers only, and so constituted as to keep the maintenance rate as low as is compatible with efficiency. Seeing, then, that it was impossible to institute any fair general comparison between the French Departmental Asylums, which I lately visited, and our own County Asylums, I determined, whilst not failing to pay all due regard to the arrangements for, and treatment of, the pensionnaires, to pay more particular attention to the condition and treatment of the pauper patients in the Asylums visited, and to take my notes accordingly. These rough notes, instead of consigning them to the waste paper basket, as has been the fate of former notes of visits made by me to Continental Asylums, I have, this time, determined to offer to my professional brethren, in the hope that they may afford, perhaps, some few crumbs of information and of interest. It will be necessary for me, however, before going further, to state—that, as the principal object of my tour was walking and not mad-house hunting, I did not follow out any predetermined plan as to which particular asylums I should visit. Indeed, it was not until I had well started on my tour that I conceived the laudable idea of endeavouring to combine a little instruction with my amusement, and the result was that I merely visited those asylums which were in close proximity to the route which I had arranged for myself previous to starting. The asylums to which I paid these hap-hazard visits, then, were the following:—1st, “L'Asile de Lehon,” Dinan; 2nd, “L'Asile St. Athanase,” Quimper; 3rd, “L'Asile St. Méen,” Rennes; and 4, “L'Asile de Pontorson,” situated in the small town of that name; and I shall record my notes of them, seriatim, in the order in which they were visited.

scholarly journals Four Departmental Asylums in the North-West of France

1874 ◽  
Vol 19 (88) ◽  
pp. 541-552
Author(s):  
J. Wilkie Burman
Keyword(s):  
Small Town ◽  
Great Majority ◽  
Waste Paper ◽  
Maintenance Rate ◽  
North West ◽  
The North ◽  
Walking Tour ◽  
Large Numbers ◽  
Close Proximity ◽  
Lunatic Asylums

In the course of a walking tour, during last summer, I visited, en route, four of the Departmental Lunatic Asylums in the North-West of France, principally with a view to see how they would stand comparison with our own Provincial or County Asylums. Such a comparison, however, could scarcely, I find, be made on a fair basis; for though, undoubtedly, the great majority of the patients in the French Departmental Asylums are paupers, and maintained at the expense of the several Departments, yet, in all, there are associated with these paupers large numbers of pensionnaires, who are maintained by theirfriends and divided into four or five classes, and treated according to their rate of payment. It is obvious, moreover, that the better general and special arrangements, due to and supported by the higher rates of payment of the pensionnaires, would prevent such associated asylums as these from being fairly compared, as to their tout ensemble, with our own County Asylums—in which, as a rule, the patients are all paupers, and chargeable to the different unions, and in which the arrangements are for paupers only, and so constituted as to keep the maintenance rate as low as is compatible with efficiency. Seeing, then, that it was impossible to institute any fair general comparison between the French Departmental Asylums, which I lately visited, and our own County Asylums, I determined, whilst not failing to pay all due regard to the arrangements for, and treatment of, the pensionnaires, to pay more particular attention to the condition and treatment of the pauper patients in the Asylums visited, and to take my notes accordingly. These rough notes, instead of consigning them to the waste paper basket, as has been the fate of former notes of visits made by me to Continental Asylums, I have, this time, determined to offer to my professional brethren, in the hope that they may afford, perhaps, some few crumbs of information and of interest. It will be necessary for me, however, before going further, to state—that, as the principal object of my tour was walking and not mad-house hunting, I did not follow out any predetermined plan as to which particular asylums I should visit. Indeed, it was not until I had well started on my tour that I conceived the laudable idea of endeavouring to combine a little instruction with my amusement, and the result was that I merely visited those asylums which were in close proximity to the route which I had arranged for myself previous to starting. The asylums to which I paid these hap-hazard visits, then, were the following:—1st, “L'Asile de Lehon,” Dinan; 2nd, “L'Asile St. Athanase,” Quimper; 3rd, “L'Asile St. Méen,” Rennes; and 4, “L'Asile de Pontorson,” situated in the small town of that name; and I shall record my notes of them, seriatim, in the order in which they were visited.

DEVELOPMENT OF THE NORTH RANKIN FIELD, NORTH WEST SHELF, AUSTRALIA

1983 ◽  
Vol 23 (1) ◽  
pp. 164
Author(s):  
M. David Agostini
Keyword(s):  
Seismic Survey ◽  
Process Equipment ◽  
Two Phase ◽  
Gas Field ◽  
North West ◽  
The North ◽  
Christmas Trees ◽  
High Level ◽  
Inflow Performance ◽  
Standard Steel

The North Rankin gas field discovered in 1971, has been evaluated by a series of appraisal wells and refinement of this is underway through the use of a 3D seismic survey. Extensive production testing on two wells was used to establish reservoir fluid characteristics, inflow performance and to predict reservoir behaviour.The North Rankin 'A' platform has been constructed of a standard steel jacket design. Components of the structure were built in Japan, Singapore, Geraldton, Jervoise Bay and Adelaide. Provision exists for 34 wells to be drilled from the structure to exploit the southern end of the North Rankin field.Simultaneous drilling and producing activities are planned, requiring well survey and deviation control techniques that will provide a high level of confidence. Wells will be completed using 7 inch tubing, fire resistant christmas trees, and are designed to be produced at about 87 MMSCFD on a continuous basis. Process equipment on this platform is designed to handle 1200 MMSCFD and is intended primarily to dry the gas and condensate and to transfer gas and liquid to shore in a two phase 40 inch pipeline. The maintenance of offshore equipment is being planned to maximise the ratio between planned and unplanned work.The commencement of drilling activities is planned for mid 1983, with commissioning of process equipment occurring in the second quarter of 198 The North Rankin 'A' platform will initially supply the WA market at some 400 MMSCFD offshore gas rate, requiring 7 wells. The start of LNG exports is planned for April 1987. The intial gas for this will be derived from the North Rankin 'A' platform.

PETROLEUM EXPLORATION PREVIEW FOR 1967

1967 ◽  
Vol 7 (1) ◽  
pp. 16
Author(s):  
M. A. Condon
Keyword(s):  
Financial Incentives ◽  
Petroleum Exploration ◽  
North West ◽  
The North ◽  
Oil Markets ◽  
Before And After ◽  
Timor Sea ◽  
The Government ◽  
Average Size ◽  
The Cost

Exploration for petroleum in Australia paused in 1966 and this pause is likely to continue in 1967.The number of wells drilled and seismic activity will both be slightly less in 1967 than in 1966, but the work will generally be directed to more specific targets. The cost of exploration will be somewhat higher than in 1966.During the year off-shore drilling should increase and it is expected that five mobile rigs will be drilling in the offshore areas by the end of the year. The immediate structural targets available for these rigs are in the Gippsland, Bass and Otway Basins (Victoria-Tasmania), the North-West Shelf and Timor Sea-Bonaparte Gulf, and in the Gulf of Papua.Onshore exploration will be concentrated in the western Australian basins, the Surat Basin, the central Great Artesian Basin, and the Gidgealpa region of the southwestern Great Artesian Basin.The success or otherwise of the off-shore drilling will determine the rate of exploration over the next few years. If important discoveries are made off-shore, these may and probably would result in more intensive exploration of the same stratigraphic intervals onshore.The exploration patterns of Australia and several other countries before and after first commercial discovery are compared. This indicates that Australian discovery came early, as compared with other countries, where production has developed since the war, but that post-discovery effort in Australia has been very much less. The main obvious differences appear to be that in Australia the average size of the exploration concession is very much larger and the number of operators (having regard to the areas concerned) is much smaller, than in the other successful countries.There has been a gradual movement towards reducing the size of operating areas in Australia either by obligatory relinquihment or by farmout, but if discoveries are to be made at a satisfactory rate more operators are needed in every basin.The economic environment of Australia vis-a-vis Middle East oil and oil markets is probably the main basic reason for the peculiar exploratory pattern, which has impelled the Government to provide financial incentives to encourage exploration and development.

scholarly journals Wind tunnel test analysis to determine pantograph noise contribution on a high-speed train

2019 ◽  
Vol 11 (10) ◽  
pp. 168781401988477
Author(s):  
Hee-Min Noh
Keyword(s):  
Wind Tunnel ◽  
Noise Reduction ◽  
High Speed ◽  
Acoustic Noise ◽  
Microphone Array ◽  
Wind Tunnel Test ◽  
Full Scale ◽  
Scale Model ◽  
Test Analysis ◽  
Noise Contribution

In this study, we investigated the characteristics and the influence of the aero-acoustic noise generated from a pantograph using various experimental approaches in a wind tunnel. First, the noise generated at various flow velocities was measured and analyzed using a full-scale pantograph model. Then, the noise generated from the main position of the pantograph was derived using a microphone array attached to one side of a wind tunnel. The noise contributions of the main components of the pantograph were derived from the noise measurements obtained from a step-by-step disassembly of the full-scale model. In addition, the noise reduction achieved by panhead collectors, which are some of the most important noise sources on a pantograph, was examined by studying the results obtained when varying their geometry. In order to analyze the noise-reduction effect achieved by varying the height of the collector, different types of collectors were fabricated and wind tunnel tests were conducted. Through this study, we have investigated the aero-acoustic noise contribution of the major components of a pantograph, and we have developed effective noise-reduction measures for the panhead collector.

scholarly journals Economic burden of cardiovascular diseases before and after Iran’s health transformation plan: evidence from a referral hospital of Iran

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Vahid Alipour ◽  
Hamed Zandian ◽  
Vahid Yazdi-Feyzabadi ◽  
Leili Avesta ◽  
Telma Zahirian Moghadam
Keyword(s):  
Cardiovascular Diseases ◽  
Economic Burden ◽  
Indirect Costs ◽  
Structured Interviews ◽  
Cross Sectional ◽  
Direct And Indirect Costs ◽  
North West ◽  
The North ◽  
Hospitalization Costs ◽  
Before And After

Abstract Background Different countries have set different policies to control and decrease the costs of cardiovascular diseases (CVDs). Iran was aiming to reduce the economic burden of different disease by a recent reform from named as health transformation plan (HTP). This study aimed to examine the economic burden of CVDs before and after of HTP. Methods This cross-sectional study was conducted on 600 patients with CVDs, who were randomly selected from a specialized cardiovascular hospital in the north-west of Iran. Direct and indirect costs of CVDs were calculated using the cost of illness and human capital approaches. Data were collected using a researcher-made checklist obtained from several sources including structured interviews, the Statistical Center of Iran, Iran’s Ministry of Cooperatives, Labor, and Social Welfare, the central bank of Iran, and the data of global burden of disease obtained from the Institute for Health Metrics and Evaluation to estimate direct and mortality costs. All costs were calculated in Iranian Rials (IRR). Results Total costs of CVDs were about 5571 and 6700 billion IRR before and after the HTP, respectively. More than 62% of the total costs of CVDs accounted for premature death before (64.89%) and after (62.01%) the HTP. The total hospitalization costs of CVDs was significantly increased after the HTP (p = 0.038). In both times, surgical services and visiting had the highest and lowest share of hospitalization costs, respectively. The OOP expenditure decreased significantly and reached from 54.2 to 36.7%. All hospitalization costs, except patients’ OOP expenditure, were significantly increased after the HTP about 1.3 times. Direct non-medical costs reached from 2.4 to 3.3 billion before and after the HTP, respectively. Conclusion Economic burden of CVDs increased in the north-west of Iran after the HTP due to the increase of all direct and indirect costs, except the OOP expenditure. Non-allocation of defined resources, which coincided with the international and national political and economic challenges in Iran, led to unsustainable resources of the HTP. So, no results of this study can be attributed solely to the HTP. Therefore, more detailed studies should be carried out on the reasons for the significant increase in CVDs costs in the region.

Economic Burden of Cardiovascular Diseases Before and After the Iran’s Health Transformation Plan: A Cross-Sectional Study on Referral Hospital in the North-West of Iran

2020 ◽  
Author(s):  
Vahid Alipour ◽  
Hamed Zandian ◽  
Vahid Yazdi-Feyzabadi ◽  
Leili Avesta ◽  
Telma Zahirian Moghadam
Keyword(s):  
Economic Burden ◽  
Indirect Costs ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Direct And Indirect Costs ◽  
North West ◽  
The North ◽  
Hospitalization Costs ◽  
Before And After

Abstract Background Different countries have set different policies to control and decrease the costs of Cardiovascular Diseases(CVDs). Iran aiming reducing the economic burden of different disease by a recent reform from named as health transformation plan(HTP). This study aimed to examine economic burden of CVDs before and after of HTP, Methods This cross-sectional study was conducted on 600 patients with CVDs, who were randomly selected from a specialized cardiovascular hospital in the north-west of Iran. Direct and indirect costs of CVDs were calculated using cost of illness and human capital approaches. Data were collected using a researcher-made checklist obtained from several sources including structured interviews, the Statistical Center of Iran, Iran's Ministry of Cooperatives, Labor, and Social Welfare, central bank of the Iran, and the data of global burden of disease obtained from the Institute for Health Metrics and Evaluation to estimate direct and mortality costs. All costs were calculated in Iranian Rials(IRR). Results Total costs of CVDs were about 5571 and 6700 billion IRR before and after the HTP, respectively. More than 62% of the total costs of CVDs accounted for premature death before (64.89%) and after(62.01%) the HTP. The total hospitalization costs of CVDs was significantly increased after the HTP (p=0.038). In both times, surgical services and visiting had the highest and lowest share of hospitalization costs, respectively. The OOP expenditure decreased significantly and reached from 54.2% to 36.7%. All hospitalization costs, except patients' OOP expenditure, were significantly increased after the HTP about 1.3 times. Direct non-medical costs reached from 2.4 to 3.3 billion before and after the HTP, respectively. Conclusion The economic burden of CVDs after the HTP increased in the north-west of Iran due to the increase of all direct and indirect costs, except the OOP expenditure. Non-allocation of defined resources, which coincided with the international and national political and economic challenges in Iran, led to unsustainable resources of the HTP. So, no results of this study can be attributed solely to the HTP. Therefore, studies that are more detailed should be carried out on the reasons for the significant increase in CVDs costs in the region.

The structure of the Central-Eastern Rif (Morocco) and the disregarded subduction of the North-West African paleo-margin

2020 ◽  
Author(s):  
Oriol Gimeno ◽  
Dominique Frizon de Lamotte ◽  
Rémi Leprêtre ◽  
Faouziya Haissen ◽  
Achraf Atouabat ◽  
...  
Keyword(s):  
Late Eocene ◽  
West African ◽  
North African ◽  
Tectonic Event ◽  
North West ◽  
The North ◽  
Before And After ◽  
Rif Belt ◽  
Thrust Sheets ◽  
Gravity Driven

<p>The Rif Belt (Northern Morocco) forms the western edge of the Alpine-Himalayan orogenic system developed during the convergence between the Africa and Eurasia plates. Compared to other mountains belts, the External Rif, which preserves remnants of the North African paleo-margin, presents two unusual features: (1) the presence of metamorphic massifs [External Metamorphic Massifs (EMMs)] and (2) the existence of large allochthonous thrust-sheets that travelled far away [the Higher Nappes]. In this contribution, we combined structural, stratigraphic and metamorphic data, complemented by new field observation and thermochronology results, to revisit the structure of the External Rif and to review its Cenozoic evolution. The External Rif was the site of a poly-phased tectonic evolution recorded before and after of a major unconformity: the so-called “Mesorif Unconformity” postdating an important Midde-Late Eocene deformation. This tectonic event is well-preserved in the North-African paleo-margin because of its under-thrusting (“subduction”) below the Maghrebian Tethys, the former oceanic domain separating Iberia from Africa. The MP-LT metamorphism, recorded in the EMMs (Temsamane Units in Morocco), is a direct vestige of this process.  By contrast, traces of this event are absent in the oceanic units of the Intrarif Domain, element of the Maghrebian Tethys. After the “Mesorif Unconformity”, i.e. during the Miocene, the regional geodynamics is dominated by the westward translation of the Alboran Domain and the coeval deformation of the Ketama Unit (Intrarif) in front of it. This process results directly from the subduction of the Maghrebian Tethys, which happened at that time. The docking of the Ketama Unit against the already exhumed EMMs allowed an uplift and the subsequent detachment of the top of its lithostratigraphic pile, individualizing the Higher Nappes. During their gravity-driven travel towards the foredeep basin, they dragged at their floor the already exhumed Senhadja Nappes, inherited from the distal-most part of the NW African margin. All these elements are integrated in a coherent model integrating the External Rif in the geodynamics of the West Mediterranean.</p>

scholarly journals Zooplankton community structure before and after Mnemiopsis leidyi arrival

2019 ◽  
Vol 41 (6) ◽  
pp. 803-820
Author(s):  
Emanuela Fiori ◽  
Margherita Benzi ◽  
Carla Rita Ferrari ◽  
Cristina Mazziotti
Keyword(s):  
Temporal Dynamics ◽  
Zooplankton Community ◽  
Mnemiopsis Leidyi ◽  
Zooplankton Abundance ◽  
Zooplankton Community Structure ◽  
North West ◽  
The North ◽  
Before And After ◽  
Emilia Romagna Region ◽  
Time Periods

Abstract In the present study, the temporal dynamics of zooplankton community of the North West Adriatic Sea (coastal area of Emilia-Romagna region, Italy) was monitored over 12 years. The distribution and abundance of zooplankton species were investigated in relation to physical and biological parameters (temperature, salinity, dissolved oxygen and chlorophyll-a). Since November 2015 the non-indigenous copepod Pseudodiaptomus marinus, Sato, 1913 has been observed in the study area. During summer 2016, the American comb jelly Mnemiopsis leidyi, A. Agassiz, 1865 was recorded there for the first time and its presence was continuously monitored since that time (weekly observations from August 2016 to December 2017). Our study confirmed that the environmental conditions of the study area were suitable for M. leidyi growth. In addition, due to the combined effects of temperature, salinity and food availability M. leidyi was able to survive during winter months. Particular attention was then given to zooplankton abundance and community changes between two time periods: before and after M. leidyi arrival. Statistical analysis revealed significant differences in zooplankton abundance between the two time periods and a decrease in species diversity and evenness was observed during summer 2016.

Sign in / Sign up

Export Citation Format

Share Document