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The purpose of this study is to investigate the aesthetic blackening coating formed by a hydrothermal process, focusing on the formation of magnetite and the oxide adhesion for improving the corrosion resistance of the steel.

The aesthetic black coating was applied on AISI 4140 steel using a hydrothermal process with a non-toxic solution consisted of ferrous sulphate hydrate (FeSO4·7H₂O), sodium hydroxide (NaOH) and hydrazine hydrate (N2H4·H₂O). Upon process parameters temperature and time, the morphology of the coatings and oxidation kinetics were investigated by using scanning electron microscopy and X-ray diffraction (XRD) analysis. Furthermore, the samples with coatings were subjected to the adhesion test using a tensile testing machine equipped with a charge-coupled device (CCD) camera.

From the formation parameters due to temperature and time for the conversion coatings, it was found that the oxidation kinetics had special characteristics which were in accordance with a linear rate law and Arrhenius relation. For the samples blackened, the XRD analysis results revealed that the magnetite was successfully formed on the surface of the steel. On the other hand, increasing the blackening temperature worsened the scale adhesion as observed by the lower strain provoking the first spallation and the higher sensitivity of the oxide to spall out with the imposed strain.

The effects of parameters of the formation of conversion coatings were investigated to understand the kinetics of the coatings. Furthermore, a tensile adhesion test using a CCD camera was applied to evaluate the adhesion between the native oxide formed by conversion coating.

The purpose of this paper is to synthesise a tetrakisazo reactive dye and to characterise its dyeing property to meet the demand for better black reactive dyes.

The novel tetrakisazo navy-blue reactive dye based on 4,4′-diaminostilbene-2,2′-disulphonic acid was designed and synthesized. The dyeing behaviour of it on cotton fabric was discussed. The synergistic blackening effect and absorbance spectra were investigated by absorbance and reflectance spectra, K/S and colorimetric data.

The exhaustion and fixation of the designed reactive dye were higher than 20 per cent than those of the commercial reactive dye, CI Reactive Black 5. The novel reactive dye has complementary with Reactive Red SPB and Reactive Yellow C-5R in absorbance spectra from 360 to 700 nm. Three reactive dyes had synergistic effect in colour deepening properties. The dyed cotton fabric possessed high K/S value and low reflectance in the whole visual spectrum range from 360 to 700 nm.

Comparison with the commercial Reactive Black DN-RN, the blackness of the dyed fabrics with the mixture dyes was greatly improved and the fastness properties on cotton fabrics were also good.

The paper is an original research work. Because the mixture dyes had better blackness and good fastness properties, it would have wide application in the dyeing of cotton fabric.

This article describes an automatic installation at the Fabrique Nationale D'Armes de Guerre, Belgium

The spirits industry is a major economic contributor worldwide, often requiring years of maturation in barrels that is associated with significant release of ethanol into the surrounding environment. This provides carbon nutrition for colonisation of black fungal growths, one type being Baudoinia compniacensis, or Whisky Black. Although growth is localised in production areas, numerous sites exist globally, and this paper's purpose is to investigate the extent and implications of colonisation.

The paper presents and discusses the results of a visual survey of the area surrounding a site where whisky is maturing in nearby bonded warehouses. The evaluation considers radial zoning distance from the ethanol source and material substrate types and surface textures. Classical key stages of Building Pathology, namely manifestation, diagnosis, prognosis and therapy, are considered.

Key findings are that the colonisation of the fungus is non-uniform and dependent on the substrate building material. Additionally, rougher-textured building materials displayed heavier levels of fungal manifestation than smooth materials. Aspects such as distance, wind direction and moisture are considered relative to the extent and level of fungal growth.

This investigation provides the first assessment of the extent and nature of the fungal growth in properties built in surrounding areas to bonded warehouses. Such information can facilitate open dialogue between stakeholders that recognise the aspirations of values of corporate social responsibility, whilst balancing the economic importance of distilling with recognition of the fungus's impact on property values and appropriate recurring remedial treatments.

PHOSPHATING is a process designed to provide steel surfaces with a scuff‐resistant coating, capable of rapid break‐in. A glance through a microscope will reveal that this process is far more than a mere blackening of the surface.

The aim of the present paper was to investigate the inhibition performance of the OF and/or IM on L360 steel in CO₂/H₂S environments. The pipeline steel surface usually has been pre-treated before using in the oil/gas field, such as by passivation, blackening, and phosphiding. The effectiveness of inhibition can vary because there are many differences between the metal matrix and the treated film.

Imidazoline (IM) was synthesized by using oleic acid and diethylenetriamine, and its composition was verified using Fourier transform infrared spectroscopy. The oxide film (OF) covering a sample of L360 steel was characterized using X-ray diffraction, and its surface morphology was observed using scanning electron microscope. Electrochemical impedance spectroscopy measurements were conducted to study the inhibition performance of IM- and/or OF-covered L360 steel in the CO₂/H₂S environments.

The results show that IM and OF can prevent corrosion on L360 steel in CO₂/H₂S environments, and the synergistic inhibition effect of IM and OF was very evident. A possible model is proposed to explain the synergistic inhibition effect in the CO₂/H₂S environments of IM and OF on L360 steel.

Few reports have concerned the effect of the OF on the inhibitor’s performance, especially in CO₂/H₂S systems. The aim of the present study was to investigate the inhibition performance of the OF and/or IM on L360 steel in CO₂/H₂S environments. A model is proposed to explain the synergistic inhibition effect mechanism between IM and OF.

The factories are instructed as to what kinds of pack they are to produce, and their product is controlled by samples sent at specified times to the research laboratory. With greater and less attention to detailed steps the whole of agriculture and the food industry in Italy is so controlled. In Germany can be noted as an example the development on a large scale of the fishing industry in the Baltic—the scrapping of the privately‐owned small fishing boats in that sea—the launching of large vessels with their factory vessels in attendance— the keenness with which every step in the development of fish preservation has been followed—the official tests on such methods as the American Birdseye Quick Freezing, the German Heckerman process, the English Z process, and the building and the equipping of the large factories where the whole of the waste fish products are worked up into edible and useful products. This last is the keynote of the German system : waste nothing. The recovery of waste fats has been practised in Germany in an intensive fashion for several years. There have been in Germany other changes of a more subtle character, and not so obvious to the outside world. The food laws of Germany were such that the nation could be justly proud of them, but for some time there has been a distinct slackening of the control—as for example in the use of preservatives. These were strictly limited in kind and number—but even before the present phase the blind eye of the official had often been turned towards the use of disallowed preservatives and I am given to understand that certain chemicals, erstwhile forbidden, can now be used officially. It may be policy for our Ministry of Health to aid in the present critical situation by relaxing some of the regulations at present in force. Those preservatives to be released would not in any way lower the nutritional value of the foods, nor would there be allowed any of those preservatives against which a case has been made in respect of their physiological action. The impetus given to research work by totalitarian states should be an inspiration to the democracies. One of the first things the Italian Government took in hand after their conquest of Abyssinia was a scientific survey of the natural products of the country. A recent issue of Nature states that the first number of a new official Italian journal contains the results of the first three years' work on the fish of the inland waters of the former Ethiopia. As Nature points out, the far greater areas of British Eastern Africa have been subjected simply to spasmodic and short‐termed scientific examinations, chiefly resulting from the initiative of private individuals or of institutions. It is to be stressed, however, that the stimulus given to scientific studies of food production and manufacture both in Germany and Italy was activated by abnormal conditions. In neither the one nor the other can it be said that the development was a natural one—in both it was originated by the desire of the government to make the country as self‐sufficient as possible in case of war, and therefore the whole idea was abnormal and biased. In this country and in the United States the development has followed much sounder lines. In this country the standard of living has become remarkably high, although perhaps somewhat lop‐sided. One might quote the example of bread. The loaf as we know it to‐day is made almost wholly from wheat flour, derived from that portion of the wheat kernel which gives the whitest flour. The Ministry of Health has, I think, been very properly concerned to maintain our high standard and has looked with disfavour on flours which, in order to simulate that particular white portion of the wheat grain, have been bleached. America is the only other country in the world where the people demand white loaves of such delicate and even texture. There much be something very attractive to the public in this type of loaf: some of us remember the fiasco of the standard bread, and members of the bakery trade know what a small proportion of their sales are concerned with brown loaves. The general character of the bread in continental European countries is very different; even the delightful loaves of France, generally well baked, are dark in comparison, although in no sense “ brown ” or “ whole‐meal.” In most countries flours other than wheat are incorporated. We may have to incorporate potato‐flour, but if this is done in any large quantity the resultant loaf has an entirely different texture. It is obvious that the dividing line between the scope of agriculture and that of the food industry is essentially ill‐defined. The importance, however, of the pre‐industrial treatment is such that it is really impossible to dissociate the scientific work of the agriculturalist from that of the industrialist. To quote examples :— Under the aegis of the Food Investigation Board a study has been made of the production of bacon in this country, with remarkably successful results to the farmer, to the bacon‐curer and to the consumer. Similarly the extensive series of experiments carried out by the Food Investigation Board on the storage of fruit has had great success, and the economic effect on the fruit trade, not only here, but also in the Dominions and Colonies cannot be estimated at the moment. An agricultural study of great importance to the housewife was undertaken by the Potato Marketing Board; this was concerned with the blackening of potatoes and was unfortunately not concluded when the war brought a sudden halt to the work. The problem of obtaining “ figures ” for characteristics of food is the most difficult with which the chemist has to deal. There is no method by which palatability can be registered, for it is compounded of many factors which themselves are not possible of measurement. Flavour, appearance and edibility are all concerned. It is comparatively simple to connect softness on the palate of a cream centre of a chocolate with the size of the grain of the sugar crystals, or the smoothness of an ice cream with the size of the ice‐crystals, but to express the texture of a cake in terms measuring the reaction of the palate, or the toughness or tenderness of a beef‐steak are far more difficult. This last example has been considered in some detail. Much work has been done at the Low Temperature Station at Cambridge on methods of judging the tenderness of meat. There is no simple method of reproducing the complicated movement of the jaws in mastication—but the consumer of the steak judges the tenderness by the reactions of his jaws to the muscle fibre, and the problem is complicated by the fact that the judgment of a person with a denture is entirely different from that of a person with his natural teeth; it has been estimated, for example, that the pressure which can be applied during mastication is only, even by those with the most perfect denture, one tenth that of normal. A somewhat complicated instrument has been designed and constructed at the Research Station at Karlsruhe in order to make possible investigations on the problem of the toughness of meat. Sufficient data have not yet been accumulated to pass judgment on its efficiency but it appears to be the most satisfactory attempt yet made to enable definite measurements of the toughness of meat to be determined. These are but examples of the general trend of scientific work in food production and manufacture, examples of the range of subjects and problems being attacked with an ever increasing vigour.

FOR a number of years, the X‐ray macro‐structural examination of metals, alloys and other raw materials has been success‐fully applied in many factories for the detection of internal defects, fractures, cracks, blow‐holes, piping, etc. It has recently been possible also to develop microstructural examination to such an extent that besides being used in research laboratories it is now applied to the practical inspection and testing of materials.

AVIATION development, stimulated already to a considerable extent by radio and the invention of instruments which make it possible to fly without being able to see the earth, is impeded to some extent by the lack of lighting appliances which supply sufficient illumination for effecting emergency landings with safety, or for landing on aerodromes in the ordinary course of air traffic, or for reconnoitring of the region over which a flight is being made.

Some misconception appears to have arisen in respect to the meaning of Section 11 of the Food and Drugs Act, 1899, owing, doubtless, to the faulty punctuation of certain copies of the Act, and the Sanitary Record has done good service by calling attention to the matter. The trouble has clearly been caused by the insertion of a comma after the word “condensed” in certain copies of the Act, and the non‐insertion of this comma in other copies. The words of the section, as printed by the Sanitary Record, are as follows: “Every tin or other receptacle containing condensed, separated or skimmed milk must bear a label clearly visible to the purchaser on which the words ‘Machine‐skimmed Milk,’ or ‘Skimmed Milk,’ as the case may require, are printed in large and legible type.”