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A new approach was suggested for creating nano-dimensional materials based on water-soluble polymers. Nano-seized Al-contained structures were synthesized; such structures were screened by a cover of sodium-carboxymethylcellulose by heating up to 70-80 degrees of Celsius of a sodium-carboxymethylcellulose's polymere with Al microparticles with dimension less than 20 mkm. Morphological features of created composites were researched. It was established that agglomerates of received particles were reached values of 300-600 nm and consisted of tubular types' structures with dimensions 80-100 nm.

This paper aims to examine the unsteady stagnation-point flow, heat and mass transfer of upper-convected Oldroyd-B nanofluid along a stretching sheet. The thermal conductivity is taken in a temperature-dependent fashion. With the aid of Cattaneo–Christov double-diffusion theory, relaxation-retardation double-diffusion model is advanced, which considers not only the effect of relaxation time but also the influence of retardation time. Convective heat transfer is not ignored. Additionally, experiments verify that with sodium carboxymethylcellulose (CMC) solutions as base fluid, not only the flow curve conforms to Oldroyd-B model but also thermal conductivity decreases linearly with the increase of temperature.

The suitable pseudo similarity transformations are adopted to address partial differential equations to ordinary differential equations, which are computed analytically through homotopy analysis method (HAM).

It is worth noting that the increase of stagnation-point parameter diminishes momentum loss, so that the velocity enlarges, which makes boundary layer thickness thinner. With the increase of thermal retardation time parameter, the nanofluid temperature rises that implies heat penetration depth boosts up and the additional time required for nanofluid to heat transfer to surrounding nanoparticles is less, which is similar to the effects of concentration retardation time parameter on concentration field.

This paper aims to explore the unsteady stagnation-point flow, heat and mass transfer of upper-convected Oldroyd-B nanofluid with variable thermal conductivity and relaxation-retardation double-diffusion model.

Differences in the laws and regulations with respect to basic materials, optional ingredients and food additives authorised in ice‐cream manufacture in the EC members states were studied. No substantial differences exist regarding most of the basic materials. However, there are differences in certain of these materials, e.g. non‐milk fats, skimmed milk powder or sweetners other than sucrose. More differences exist among the optional ingredients and food additives. Most of the food additives authorised by each state ae in the list of additives approved by the EC Council. Compositional requirements for different ice‐cream types were also studied.

DURING October and November 1957 B.P. Exploration Co. Ltd. made a number of trials at their Egmanton oilfield in Nottinghamshire to compare the relative merits of turbodrilling and rotary drilling techniques. Although the details of these results are not of direct interest from a lubrication point of view the part played by the drilling fluid in these techniques is worthy of note.

The coatings industry is in large measure a function of the world around it. Advances in related disciplines are scrutinised carefully by coatings chemists because of the ramifications that these new discoveries and inventions may have if applied directly to the coatings area. This is certainly true relative to new resins and other raw materials. It applies also to the development of new energy forms which reflect themselves in new ways to cure coatings. Accordingly, some of these newer advances which could eventually have important ramifications in the coatings industry will be reviewed here.

Intense interest has been shown in creating new and effective biocide agents as a result of changes in bacterial isolates, bacterial susceptibility to antibiotics, an increase in patients with burns and wounds and the difficulty of treating infections and antimicrobial resistance. Woven, nonwoven and knitted materials are used to make dressings; however, nonwoven dressings are becoming more popular because of their softness and high absorption capacity. Additionally, textiles have excellent geometrical, physical and mechanical features including three-dimensional structure availability, air, vapor and liquid permeability, strength, extensibility, flexibility and diversity of fiber length, fineness and cross-sectional shapes. It is necessary to treat every burn according to international protocol and along with it has to focus on particular problems of patients and the best possible results.

The objective of this paper is to conduct a thorough examination of research pertaining to the utilization of textiles, as well as alternative materials and innovative techniques, in the context of burn wound dressings. Through a critical analysis of the findings, this study intends to provide valuable insights that can inform and guide future research endeavors in this field.

In the past years, there have been several dressings such as xeroform petrolatum gauze, silver-impregnated dressings, biological dressings, hydrocolloid dressings, polyurethane film dressings, silicon-coated nylon dressings, dressings for biosynthetic skin substitutes, hydrogel dressings, newly developed dressings, scaffold bandages, Sorbalgon wound dressing, negative pressure therapy, enzymatic debridement and high-pressure water irrigation developed for the fast healing of burn wounds.

This research conducts a thorough analysis of the role of textiles in modern burn wound dressings.

Safety precautions in the use of raw materials, in manufacturing and processing, marketing and enforcement of food and drug law on purity and quality may appear nowadays to be largely a matter of routine, with manufacturers as much involved and interested in maintaining a more or less settled equilibrium as the enforcement agencies. Occasionally the peace is shattered, eg, a search and recovery operation of canned goods of doubtful bacterial purity or containing excess metal contamination, seen very much as an isolated incident; or the recent very large enforcement enterprise in the marketing of horseflesh (and other substitutions) for beef. The nationwide sale and distribution of meat on such a vast scale, only possible by reason of marketing methods — frozen blocks of boneless meat, which even after thawing out is not easily distinguishable from the genuine even in the eye of the expert; this is in effect only a fraud always around in the long ago years built up into a massive illicit trade.

Reports from the south‐east of England that housewives have been purchasing packets of “ glitter ” consisting of powdered glass, lacquered, coated with silver and sometimes dyed, for the purpose of decorating their cakes makes one wonder seriously whether we Britons are any more of a thinking race than our coloured brethren of London and other large centres, who report has it, consume large quantities of canned cat and dog meat as a sandwich spread. In the first case, although the so‐called “ glitter ” was never prepared for use as a cake decoration, the manufacturers concerned have given an assurance that in future packets will be labelled that the contents are not for eating !

This study aims to explore the use of knitted rag by synthesizing different grades of carboxymethyl cellulose (CMC) by applying multiple-step carboxymethylation techniques.

CMC was synthesized from knitted rag, a cellulosic waste of textile and garment industries, in aqueous ethanolic sodium hydroxide and subsequently mono-chloroacetic acid reaction medium. Low-substituted to high-substituted products were obtained from single-step to seven-step carboxymethylation of cellulose. In this way, it was possible to produce low-cost and different grades of substituted carboxymethylated cellulose. The synthesized CMC was characterized, and their physical properties were investigated. The structure of CMC and grafted CMC were investigated by Fourier transform infrared spectroscopy.

Solubility, CMC content, degree of substitution and molecular weight of CMC were increased gradually with the increase in the number of reaction steps, although fourth step attained the optimum. The cellulosic waste of knitted rag can easily be used to produce value-added products such as CMC and other cellulose derivatives, and that will ultimately reduce the pollution problems from this waste.

Grafting of prepared CMC film with methyl methacrylate monomer increased their strength, although decreased rigidity and moisture content because the incorporation of hydrophobic methyl methacrylate monomer was observed.

The purpose of this paper is to explore the previously unreported phenomenon in which changes occur to the particle size distributions of calcium carbonate fillers, used in papermaking, when exposed to high intensity ultrasound.

Commercial paper pulps sonicated at a frequency of 20 kHz are found to produce aggregates of their mineral filler constituents. The effects of sonication on isolated long and short fibre, and ground and precipitated calcium carbonate filler systems are also investigated both with and without the presence of dispersants. The findings are supported by particle size analysis and scanning electron microscopy of the sonicated systems.

It is clearly shown that exposure to high intensity ultrasound induces filler aggregation. However, the effect only occurs when paper fibres and fillers coexist and is not apparent for suspensions of filler only or fibre only slurries. Furthermore, the treatment overrides the effect of dispersants used to keep filler in suspension during the manufacturing process. An accompanying fall in pH with increasing sonication times is also noted and is linked to these changes. It is proposed that radical species produced in the slurries during sonication may explain the observed phenomenon.

The role of pH is not clearly understood and needs further study.

The findings may be of interest in paper manufacture where uniform dispersal of fillers throughout the pulp is of significant importance.

The phenomenon described in this paper has not previously been reported or explored. Further studies may add to knowledge of filler dispersions and their behaviour in papermaking.