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Article
Publication date: 28 November 2022

Jonathan Torres, Elijah Abo and Anthony Joseph Sugar

This study aims to present the optimization of parameters and effects of annealing and vapor smoothing post-processing treatments on the surface roughness and tensile mechanical…

295

Abstract

Purpose

This study aims to present the optimization of parameters and effects of annealing and vapor smoothing post-processing treatments on the surface roughness and tensile mechanical properties of fused deposition modeling (FDM) printed acrylonitrile butadiene styrene (ABS).

Design/methodology/approach

Full-factorial test matrices were designed to determine the most effective treatment parameters for post-processing. The parameters for annealing were temperature and time, whereas the parameters for the vapor smoothing were volume of acetone and time. Analysis of surface roughness and tensile test results determined influences of the levels of parameters to find an ideal balance between mechanical properties and roughness.

Findings

Optimal parameters for vapor smoothing and annealing were determined. Vapor smoothing resulted in significantly higher improvements to surface roughness than annealing. Both treatments generally resulted in decreased mechanical properties. Of all treatments tested, annealing at 100 °C for 60 min provided the greatest benefit to tensile properties and vapor smoothing with 20 mL of acetone for 15 min provided the greatest benefit to surface roughness while balancing effects on properties.

Originality/value

Vapor smoothing and annealing of FDM ABS have typically been studied independently for their effects on surface roughness and material properties, respectively, with varying materials and manufacturing methods. This study objectively compares the effects of each treatment on both characteristics simultaneously to recommend ideal treatments for maximizing the balance between the final quality and performance of FDM components. The significance of the input variables for each treatment have also been analyzed. These findings should provide value to end-users of 3D printed components seeking to balance these critical aspects of manufacturing.

Details

Rapid Prototyping Journal, vol. 29 no. 5
Type: Research Article
ISSN: 1355-2546

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Publication date: 1 March 1901

The Corporation of the City of London are about to appoint a Public Analyst, and by advertisement have invited applications for the post. It is obviously desirable that the person…

59

Abstract

The Corporation of the City of London are about to appoint a Public Analyst, and by advertisement have invited applications for the post. It is obviously desirable that the person appointed to this office should not only possess the usual professional qualifications, but that he should be a scientific man of high standing and of good repute, whose name would afford a guarantee of thoroughness and reliability in regard to the work entrusted to him, and whose opinion would carry weight and command respect. Far from being of a nature to attract a man of this stamp, the terms and conditions attaching to the office as set forth in the advertisement above referred to are such that no self‐respecting member of the analytical profession, and most certainly no leading member of it, could possibly accept them. It is simply pitiable that the Corporation of the City of London should offer terms, and make conditions in connection with them, which no scientific analyst could agree to without disgracing himself and degrading his profession. The offer of such terms, in fact, amounts to a gross insult to the whole body of members of that profession, and is excusable only—if excusable at all—on the score of utter ignorance as to the character of the work required to be done, and as to the nature of the qualifications and attainments of the scientific experts who are called upon to do it. In the analytical profession, as in every other profession, there are men who, under the pressure of necessity, are compelled to accept almost any remuneration that they can get, and several of these poorer, and therefore weaker, brethren will, of course, become candidates for the City appointment.

Details

British Food Journal, vol. 3 no. 3
Type: Research Article
ISSN: 0007-070X

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Publication date: 1 June 1901

The institution of food and cookery exhibitions and the dissemination of practical knowledge with respect to cookery by means of lectures and demonstrations are excellent things…

51

Abstract

The institution of food and cookery exhibitions and the dissemination of practical knowledge with respect to cookery by means of lectures and demonstrations are excellent things in their way. But while it is important that better and more scientific attention should be generally given to the preparation of food for the table, it must be admitted to be at least equally important to insure that the food before it comes into the hands of the expert cook shall be free from adulteration, and as far as possible from impurity,—that it should be, in fact, of the quality expected. Protection up to a certain point and in certain directions is afforded to the consumer by penal enactments, and hitherto the general public have been disposed to believe that those enactments are in their nature and in their application such as to guarantee a fairly general supply of articles of tolerable quality. The adulteration laws, however, while absolutely necessary for the purpose of holding many forms of fraud in check, and particularly for keeping them within certain bounds, cannot afford any guarantees of superior, or even of good, quality. Except in rare instances, even those who control the supply of articles of food to large public and private establishments fail to take steps to assure themselves that the nature and quality of the goods supplied to them are what they are represented to be. The sophisticator and adulterator are always with us. The temptations to undersell and to misrepresent seem to be so strong that firms and individuals from whom far better things might reasonably be expected fall away from the right path with deplorable facility, and seek to save themselves, should they by chance be brought to book, by forms of quibbling and wriggling which are in themselves sufficient to show the moral rottenness which can be brought about by an insatiable lust for gain. There is, unfortunately, cheating to be met with at every turn, and it behoves at least those who control the purchase and the cooking of food on the large scale to do what they can to insure the supply to them of articles which have not been tampered with, and which are in all respects of proper quality, both by insisting on being furnished with sufficiently authoritative guarantees by the vendors, and by themselves causing the application of reasonably frequent scientific checks upon the quality of the goods.

Details

British Food Journal, vol. 3 no. 6
Type: Research Article
ISSN: 0007-070X

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Publication date: 1 February 1970

Reports of a number of countries imposing a limited ban on the use of D.D.T. have appeared from time to time in the B.F.J., but in the last few months, what was a trickle seems to…

90

Abstract

Reports of a number of countries imposing a limited ban on the use of D.D.T. have appeared from time to time in the B.F.J., but in the last few months, what was a trickle seems to have become an avalanche. In Canada, for example, relatively extensive restrictions apply from January 1st, permitting D.D.T. for insect control in only 12 agricultural crops, compared with 62 previously; there is a reduction of maximum levels for most fruits to 1 ppm. Its cumulative properties in fat are recognized and the present levels of 7 ppm in fat of cattle, sheep and pigs are to remain, but no trace is permitted in milk, butter, cheese, eggs, ice cream, other dairy products, nor potatoes. A U.S. Commission has advised that D.D.T. should be gradually phased out and completely banned in two years' time, followed by the Report of the Advisory Committee on Pesticides and Other Toxic Chemicals recommending withdrawal in Britain of some of the present uses of D.D.T. (also aldrin and dieldrin) on farm crops when an alternative becomes available. Further recommendations include an end to D.D.T. in paints, lacquers, oil‐based sprays and in dry cleaning; and the banning of small retail packs of D.D.T. and dieldrin for home use in connection with moth‐proofing or other insect control. The Report states that “domestic users are often unaware that using such packs involve the risk of contaminating prepared food immediately before it is eaten”.

Details

British Food Journal, vol. 72 no. 2
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 1 May 1976

The way of thought and vision and memory is that they often come upon you unexpectedly, presenting nothing new but usually with a clarity and emphasis that it all seems new. This…

179

Abstract

The way of thought and vision and memory is that they often come upon you unexpectedly, presenting nothing new but usually with a clarity and emphasis that it all seems new. This will sometimes happen after a long period of indecision or when things are extremely difficult, as they have long been for the country, in most homes and among ordinary individuals. Watching one's life savings dwindle away, the nest‐egg laid down for security in an uncertain world, is a frightening process. This has happened to the nation, once the richest in the world, and ot its elderly people, most of them taught the habit of saving in early youth. We are also taught that what has been is past changing; the clock cannot be put back, and the largesse—much of it going to unprincipled spongers—distributed by a spendthrift Government as token relief is no answer, not even to present difficulties. The response can only come by a change of heart in those whose brutal selfishness have caused it all; and this may be a long time in coming. In the meantime, it is a useful exercise to consider our assets, to recognize those which must be protected at all costs and upon which, when sanity returns, the future depends.

Details

British Food Journal, vol. 78 no. 5
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 1 April 2004

Georgios I. Zekos

Investigates the differences in protocols between arbitral tribunals and courts, with particular emphasis on US, Greek and English law. Gives examples of each country and its way…

11846

Abstract

Investigates the differences in protocols between arbitral tribunals and courts, with particular emphasis on US, Greek and English law. Gives examples of each country and its way of using the law in specific circumstances, and shows the variations therein. Sums up that arbitration is much the better way to gok as it avoids delays and expenses, plus the vexation/frustration of normal litigation. Concludes that the US and Greek constitutions and common law tradition in England appear to allow involved parties to choose their own judge, who can thus be an arbitrator. Discusses e‐commerce and speculates on this for the future.

Details

Managerial Law, vol. 46 no. 2/3
Type: Research Article
ISSN: 0309-0558

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Publication date: 1 February 1995

Fred J. Hay

Anthropology was a late‐comer to the Caribbean and only after World War II did the study of Caribbean culture and societies become less exceptional. Early in this century when…

159

Abstract

Anthropology was a late‐comer to the Caribbean and only after World War II did the study of Caribbean culture and societies become less exceptional. Early in this century when anthropology was first making itself over as an ethnographic science, anthropologists concentrated on tribal peoples. For most of the post‐Columbian era, the Caribbean region, with a few minor exceptions, was without indigenous tribal societies. Even after anthropology turned its attention to the study of peasantries, Caribbean peasantries were ignored in favor of more stable and tradition‐oriented peasant societies in other parts of Latin America. When anthropologists began to study Caribbean peoples in a more serious and systematic fashion, they found that they had to develop new concepts to explain the variation, flexibility, and heterogeneity that characterized regional culture. These concepts have had a significant impact on social and cultural theory and on the broader contemporary dialogue about cultural diversity and multiculturalism.

Details

Reference Services Review, vol. 23 no. 2
Type: Research Article
ISSN: 0090-7324

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Article
Publication date: 1 January 1978

In the Court of Appeal last summer, when Van Den Berghs and Jurgens Limited (belonging to the Unilever giant organization) sought a reversal of the decision of the trial judge…

189

Abstract

In the Court of Appeal last summer, when Van Den Berghs and Jurgens Limited (belonging to the Unilever giant organization) sought a reversal of the decision of the trial judge that their television advertisements of Stork margarine did not contravene Reg. 9, Margarine Regulations, 1967—an action which their Lordships described as fierce but friendly—there were some piercing criticisms by the Court on the phrasing of the Regulations, which was described as “ridiculous”, “illogical” and as “absurdities”. They also remarked upon the fact that from 1971 to 1975, after the Regulations became operative, and seven years from the date they were made, no complaint from enforcement authorities and officers or the organizations normally consulted during the making of such regulations were made, until the Butter Information Council, protecting the interests of the dairy trade and dairy producers, suggested the long‐standing advertisements of Reg. 9. An example of how the interests of descriptions and uses of the word “butter” infringements of Reg. 9. An example af how the interests of enforcement, consumer protection, &c, are not identical with trade interests, who see in legislation, accepted by the first, as injuring sections of the trade. (There is no evidence that the Butter Information Council was one of the organizations consulted by the MAFF before making the Regulations.) The Independant Broadcasting Authority on receiving the Council's complaint and obtaining legal advice, banned plaintiffs' advertisements and suggested they seek a declaration that the said advertisements did not infringe the Regulations. This they did and were refused such a declaration by the trial judge in the Chancery Division, whereupon they went to the Court of Appeal, and it was here, in the course of a very thorough and searching examination of the question and, in particular, the Margarine Regulations, that His Appellate Lordship made use of the critical phrases we have quoted.

Details

British Food Journal, vol. 80 no. 1
Type: Research Article
ISSN: 0007-070X

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Publication date: 1 February 1981

“Streets broad and narrow”. In terms of shops and retail trade, it was always the narrow streets of town centres which attracted the trade, although the shops were small cramped…

153

Abstract

“Streets broad and narrow”. In terms of shops and retail trade, it was always the narrow streets of town centres which attracted the trade, although the shops were small cramped for space, but always a cosy, friendly air. Few ever became vacant and although interspersing chain shops seemed to break the rhythm, most were privately owned, run through the years by generations of the same family. The shops removed the proverbial meanness of narrow streets; the lights, the shopping crowds, especially on Saturday nights; shop frontmen bawling their prices, the new boys calling the late editions—all this made shopping an attractive outing; it still does. There were the practical advantages of being able to cross and re‐cross the street, with many shops on both sides within the field of vision. The broad highway had none of these things and it was extremely rare for shops to exist both sides of the street, and still less to flourish. It is much the same to this day. Hygiene purists would find much to fault, but it was what the public wanted and curiously, there was very little food poisoning; it would be untrue to say outbreaks never occurred but they were extremely rare.

Details

British Food Journal, vol. 83 no. 2
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 1 December 1901

The Departmental Committee appointed to inquire into the use of preservatives and colouring matters in the preservation and colouring of food, have now issued their report, and…

48

Abstract

The Departmental Committee appointed to inquire into the use of preservatives and colouring matters in the preservation and colouring of food, have now issued their report, and the large amount of evidence which is recorded therein will be found to be of the greatest interest to those concerned in striving to obtain a pure and unsophisticated food‐supply. It is of course much to be regretted that the Committee could not see their way to recommend the prohibition of all chemical preservatives in articles of food and drink; but, apart from this want of strength, they have made certain recommendations which, if they become law, will greatly improve the character of certain classes of food. It is satisfactory to note that formaldehyde and its preparations may be absolutely prohibited in foods and drinks; but, on the other hand, it is suggested that salicylic acid may be allowed in certain proportions in food, although in all cases its presence is to be declared. The entire prohibition of preservatives in milk would be a step in the right direction, although it is difficult to see why, in view of this recommendation, boric acid should be allowed to the extent of 0·25 per cent. in cream, more especially as by another recommendation all dietetic preparations intended for the use of invalids or infants are to be entirely free from preservative chemicals; but it will be a severe shock to tho3e traders who are in the habit of using these substances to be informed that they must declare the fact of the admixture by a label attached to the containing vessel. The use of boric acid and borax only is to be permitted in butter and margarine, in proportions not exceeding 0·5 per cent. expressed as boric acid, without notification. It is suggested that the use of salts of copper in the so‐called greening of vegetables should not be allowed, but upon this recommendation the members of the Committee were not unanimous, as in a note attached to the report one member states that he does not agree with the entire exclusion of added copper to food, for the strange reason that certain foods may naturally contain traces of copper. With equal truth it can be said that certain foods may naturally contain traces of arsenic. Is the addition of arsenic therefore to be permitted? The Committee are to be congratulated upon the result of their labours, and when these recommendations become law Great Britain may be regarded as having come a little more into line— although with some apparent reluctance—with those countries who regard the purity of their food‐supplies as a matter of national importance.

Details

British Food Journal, vol. 3 no. 12
Type: Research Article
ISSN: 0007-070X

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