Basic principles Reinforced concrete is an important material in today's construction industry. Motorway bridges, office buildings and tunnels are all designed to take advantage…
Abstract
Basic principles Reinforced concrete is an important material in today's construction industry. Motorway bridges, office buildings and tunnels are all designed to take advantage of the properties of reinforced concrete.
The total number of samples analysed in 1911 was 103,221, an increase of 2,472 samples over the number for the previous year. The principal increases were the following: Milk…
Abstract
The total number of samples analysed in 1911 was 103,221, an increase of 2,472 samples over the number for the previous year. The principal increases were the following: Milk, 2,954; flour, 405; bread, 291; and spirits, 255. The principal decreases occurred in lard, 973; cheese, 285; and margarine, 208.
Michael J. Mullins, David K. Luttrull and Hans Schumacher
Boric acid has been used for many years as a catalyst inhibitor and crosslinking agent to increase the glass transition temperature of epoxy resins for printed circuit boards…
Abstract
Purpose
Boric acid has been used for many years as a catalyst inhibitor and crosslinking agent to increase the glass transition temperature of epoxy resins for printed circuit boards (PCB), as well as in the glass fibre reinforcement. Recent regulation related to boric acid and its salts by the ECHA, a regulatory agency in the EU, may limit the use of these materials. The purpose of this paper is to describe the implications of this new regulation and to propose an analytical procedure that is relevant to PCB's.
Design/methodology/approach
Potential analytical procedures, including dissolution in acid and aqueous extraction followed by boric acid titration, are discussed and evaluated.
Findings
The use of acid for the digestion of prepreg, laminates and PCBs has the potential to greatly overstate the concentration of boric acid in PCBs.
Originality/value
An aqueous extraction method (German DIN 38414‐4) gives results that represent a worst‐case leaching process. It is proposed that it becomes the official analytical method for printed circuit boards in order to comply with the ECHA regulation.
Details
Keywords
The general quality of milk supplied by the cows will also affect the question, and in this connection it may be noted that Mr. Lehmann stated to the Departmental Committee that…
Abstract
The general quality of milk supplied by the cows will also affect the question, and in this connection it may be noted that Mr. Lehmann stated to the Departmental Committee that Dutch cows do not produce a milk so rich in fat as these of Switzerland; an examination of the figures given tends to corroborate this view. Dutch milks appear to require concentration to a higher degree in order to provide as large a proportion of fat as Swiss or Norwegian made milk.
According to a report just issued by Dr. ARTHUR NEWSHOLME, the Principal Medical Officer of the Local Government Board, it appears that a majority of the staff of the Medical…
Abstract
According to a report just issued by Dr. ARTHUR NEWSHOLME, the Principal Medical Officer of the Local Government Board, it appears that a majority of the staff of the Medical Department of the Board have been engaged in assisting to establish as favourable sanitary conditions as possible at the training centres for the new troops so that the risks associated with the concentration and feeding of large numbers of men under temporary conditions should be reduced to a minimum.
When this book is filmed, as assuredly it must be filmed, Sir Barnes will take his rightful place as a household name along with R. J. Mitchell after “The First of the Few” and…
Abstract
When this book is filmed, as assuredly it must be filmed, Sir Barnes will take his rightful place as a household name along with R. J. Mitchell after “The First of the Few” and Douglas Bader after “Reach for the Sky”.
The revelations that have been made concerning the insanitary conditions under which large quantities of important food products are prepared in the United States for consumption…
Abstract
The revelations that have been made concerning the insanitary conditions under which large quantities of important food products are prepared in the United States for consumption in this country have attracted, for the time being, the attention that the subject deserves.
The war against tuberculosis, which has been commenced under the auspices of HIS MAJESTY THE KING, if energetically prosecuted, must in the end result in placing that dread…
Abstract
The war against tuberculosis, which has been commenced under the auspices of HIS MAJESTY THE KING, if energetically prosecuted, must in the end result in placing that dread disease under a control similar to that which, among the more enlightened nations, is being gradually but surely established over many of the preventible diseases which have been the scourges of the human race. The establishment of Sanatoria, and the great extension of the more rational and scientific methods of treatment which the existence of such institutions will of necessity bring about, should lead to the saving of the lives of great numbers of sufferers who, under the old conditions, would have drifted inevitably to death. Cure is good, but prevention is better than cure, and it must not be thought that the war can be successfully carried on upon curative lines alone. It is now well known that there is a special predilection or idiosyncrasy in those who are attacked by tuberculosis; and, while relaxing no efforts to find and apply curative measures, attention to such enormously important factors as the nature and quality of the food supply and general hygienic conditions, must be fully maintained. A far more effective control than that which at present exists must be established over the milk and meat supplies of the people, so that the ingestion of the poison by those who are specially susceptible may as far as possible be prevented. Particularly will it be necessary to ensure that the supplies of milk and other food to the Sanatoria which are to be established shall be uninfected, and that they shall also be pure and of good quality. At the present time those terms are certainly not generally applicable to the supplies of most of our hospitals and large institutions, and it should be one of the first duties of those who will be concerned in the management of the new Sanatoria to see that no exception can be taken to the food supplied to the inmates.
At a meeting of the Council of the Royal Borough of Kensington on the 9th May, Councillor R. DUDLEY BAXTER, Chairman of the Law and General Purposes Committee of the Council…
Abstract
At a meeting of the Council of the Royal Borough of Kensington on the 9th May, Councillor R. DUDLEY BAXTER, Chairman of the Law and General Purposes Committee of the Council, brought up a Report as follows:—
In reference to the administration of the Sale of Food and Drugs Acts by the various local authorities in England and Wales during the year 1908 the following remarks appear in…
Abstract
In reference to the administration of the Sale of Food and Drugs Acts by the various local authorities in England and Wales during the year 1908 the following remarks appear in the recently issued report of the Local Government Board for that year. “Our attention has been drawn to the practice which has been adopted recently by certain local authorities of inviting applicants for the office of public analyst to state the terms upon which they are prepared to accept the appointment. We consider the offering of such appointment ‘on tender’ as open to strong objection, and we trust that the practice will be discontinued.”