William Algaard, Alan Agar and Nenad Bicanic
A novel integral form time‐integration algorithm for pseudodynamic testing is proposed, based on the Newmark implicit algorithm. The scheme builds on the recently proposed…
Abstract
A novel integral form time‐integration algorithm for pseudodynamic testing is proposed, based on the Newmark implicit algorithm. The scheme builds on the recently proposed integral form of the Newmark explicit algorithm which exhibits improved abilities to handle rapidly varying loads and stiffness properties during pseudodynamic testing, but displays some numerical damping and conditional stability. The enhancement is based on the inclusion of an additional term in the displacement predictor, which not only renders the algorithm more consistent, but it eliminates numerical damping and makes the algorithm unconditionally stable.
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There have always been traditional differences between the various regions of the British Isles. For example, meat consumption is greater in the North than the South; most…
Abstract
There have always been traditional differences between the various regions of the British Isles. For example, meat consumption is greater in the North than the South; most families take some meat at every meal and this extends to the children. The North is the home of the savoury meat products, eg., faggots, rissoles and similar preparations and a high meat content for such foods as sausages is expected; between 80 and 90% with the cereal only present for binding purposes. Present minimum meat contents would be considered a swindle, also the nature of the lean meat and the lean meat/fat ratio. The high water content similarly would have been unacceptable.
Since world attention has been focussed on the quality and safety of drugs, thought is being given to improving the methods of dealing with this branch of control under the Food…
Abstract
Since world attention has been focussed on the quality and safety of drugs, thought is being given to improving the methods of dealing with this branch of control under the Food and Drugs Act, 1955. This work is entirely different to the several projects now being undertaken, such as the Government‐sponsored “safety committee” dealing with the clinical testing of new drugs before sale; this deals mainly with toxicity trials, therapeutic efficiency and adverse reactions and is designed to prevent such catastrophies as the recent drug‐induced deformities of babies. The recently proposed scheme of the Association of British Pharmaceutical Industry for an advisory centre had similar objectives.
Nour Mani, Nhiem Tran, Alan Jones, Azadeh Mirabedini, Shadi Houshyar and Kate Fox
The purpose of this study is therefore to detail an additive manufacturing process for printing TiD parts for implant applications. Titanium–diamond (TiD) is a new composite that…
Abstract
Purpose
The purpose of this study is therefore to detail an additive manufacturing process for printing TiD parts for implant applications. Titanium–diamond (TiD) is a new composite that provides biocompatible three-dimensional multimaterial structures. Thus, the authors report a powder-deposition and print optimization strategy to overcome the dual-functionality gap by printing bulk TiD parts. However, despite favorable customization outcomes, relatively few additive manufacturing (AM) feedstock powders offer the biocompatibility required for medical implant and device technologies.
Design/methodology/approach
AM offers a platform to fabricate customized patient-specific parts. Developing feedstock that can be 3D printed into specific 3D structures while providing a favorable interface with the human tissue remains a challenge. Using laser metal deposition, feedstock powder comprising diamond and titanium was co-printed into TiD parts for mechanical testing to determine optimal manufacturing parameters.
Findings
TiD parts were fabricated comprising 30% and 50% diamond. The composite powder had a Hausner ratio of 1.13 and 1.21 for 30% and 50% TiD, respectively. The flow analysis (Carney flow) for TiD 30% and 50% was 7.53 and 5.15 g/s. The authors report that the printing-specific conditions significantly affect the integrity of the printed part and thus provide the optimal manufacturing parameters for structural integrity as determined by micro-computed tomography, nanoindentation and biocompatibility of TiD parts. The hardness, ultimate tensile strength and yield strength for TiD are 4–6 GPa (depending on build position), 426 MPa and 375 MPa, respectively. Furthermore, the authors show that increasing diamond composition to 30% results in higher osteoblast viability and lower bacteria count than titanium.
Originality/value
In this study, the authors provide a clear strategy to manufacture TiD parts with high integrity, performance and biocompatibility, expanding the material feedstock library and paving the way to customized diamond implants. Diamond is showing strong potential as a biomedical material; however, upscale is limited by conventional techniques. By optimizing AM as the avenue to make complex shapes, the authors open up the possibility of patient-specific diamond implant solutions.
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Millions of the British people have for some years now been struggling valiantly to live with hard times, watching them day by day grow worse but always hopefully that the cloud…
Abstract
Millions of the British people have for some years now been struggling valiantly to live with hard times, watching them day by day grow worse but always hopefully that the cloud had a silver lining; that one day, reason and a sense of direction would prevail. Tyranny in many forms is a feature of history; the greatest epics have been risings of ordinary people to overthrow it. The modern form of tyranny is that of Money; the cruel and sinister ways in which it can be obtained and employed and the ineffectiveness of any measures taken to control the evils which result. Money savings over the years and the proverbial bank book, once the sure safeguard of ordinary people, are whittled away in value, never to recover. Causes always seemed to be contained within the country's own economy and industrial practices, and to this extent should have been possible of control. The complex and elaborate systems constructed by the last Government were at least intended for the purpose, but each attempt to curb excessive demands for more money, more and more for doing less and less— the nucleus of inflation—produced extreme reactions, termed collectively “industrial strife”. Every demand met without compensatory returns in increased work, inevitably led to rises in prices, felt most keenly in the field of food and consumer goods. What else would be expected from such a situation?
Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some…
Abstract
Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.
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“A rose would smell as sweet by any other name,” but does the name make any difference to the composition of a member of the sausage family? Apparently, it does. In two recent…
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“A rose would smell as sweet by any other name,” but does the name make any difference to the composition of a member of the sausage family? Apparently, it does. In two recent cases at Hull (see Legal Proceedings, this issue), it was contended that a meat‐burger should contain 80% meat, similar to the recommendation of the Food Standards Committee for canned meat, and it was shown that meat‐burgers in the district had an average meat content complying with this standard—84% in 42 samples. In one case in question, the meat content was 31% and the retailer claimed in defence that when informed by inspectors of the 80% requirement, he decided to call his products just burgers, which left him free to adopt any composition he desired. The comments of the magistrates are not known, except that they considered the case an interesting one and dismissed it!
In years past, when life seemed simpler and the Law much less complicated, jurists were fond of quoting the age‐old saying: “All men are equal before the Law.” It was never…
Abstract
In years past, when life seemed simpler and the Law much less complicated, jurists were fond of quoting the age‐old saying: “All men are equal before the Law.” It was never completely true; there were important exemptions when strict legal enforcement would have been against the public interests. A classic example was Crown immunity, evolved from the historical principle that “The King can do no wrong”. With the growth of government, the multiplicity of government agencies and the enormous amount of secondary legislation, the statutes being merely enabling Acts, this immunity revealed itself as being used largely against public interests. Statutory instruments were being drafted within Ministerial departments largely by as many as 300 officers of those departments authorized to sign such measures, affecting the rights of the people without any real Parliamentary control. Those who suffered and lost in their enforcement had no remedy; Crown immunity protected all those acting as servants of the Crown and the principle came to be an officials' charter with no connection whatever with the Crown. Parliament, custodian of the national conscience, removed much of this socially unacceptable privilege in the Crown Proceedings Act, 1947, which enabled injured parties within limit to sue central departments and their officers. The more recent system of Commissioners—Parliamentary, Local Authority, Health Service—with power to enquire into allegations of injustice, maladministration, malpractice to individuals extra‐legally, has extended the rights of the suffering citizen.
The Fatstock and Meat Marketing Committee was set up in April, 1962, “To investigate the organisation of the marketing and distribution of fatstock and carcase meat in the United…
Abstract
The Fatstock and Meat Marketing Committee was set up in April, 1962, “To investigate the organisation of the marketing and distribution of fatstock and carcase meat in the United Kingdom, and the existing facilities and present methods employed; to consider whether changes are desirable; and to make recommendations.”
Without aspiring to emulate Robert Browning's song thrush, we venture to repeat an admonition on smoking in the food trade of almost a decade ago. (The Smoking Habit, 1962, BFJ…
Abstract
Without aspiring to emulate Robert Browning's song thrush, we venture to repeat an admonition on smoking in the food trade of almost a decade ago. (The Smoking Habit, 1962, BFJ, 64, 79). The first time it coincided with a little research we had undertaken, which later saw the light of day epitomized in article form and was enthusiastically (sic) commented upon in sections of the press and then died as if it had never been born. (Tobacco and Lung Cancer, 1965, Med. Offr., 2955, 148). Now, it coincides with the most concentrated, officially inspired, campaign, so far, mounted against the evils of smoking. The most striking fact about all these national efforts every few years is the lack of success in real terms. A marketing organization achieving such poor results would count it a costly failure. It would be unfair to say that none have given up, but with a habit so ingrained, determination is required and in many, if not most, of those able to refrain, the craving is so great that they are smoking again within a week or so. Overall, the smoking population is enormous, including, as it does, girls and women‐folk. Once, it was undignified for a woman to be seen smoking. We recall a visit by Queen Mary to the village Manor House, just after the First War; she was an expert in antique furniture and came to see the manor's collection. When Her Majesty asked for a cigarette, the village rang with astonishment for days. Nothing as amazing had happened since Cavaliers and Roundheads tethered their horses beneath the three great poplars which stood on the green. “Queen Mary! 'er smokes!”