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This paper aims to reveal the tribochemical reaction mechanism on the nano-cutting interface between HMX crystal and diamond tool.

Molecular dynamics simulation of HMX crystal nano-cutting by the reactive force field is carried out in this paper. The affinity of activated atoms and friction damage at the different interface have been well identified by comparing two cutting systems with diamond tool or indenter. The analyses of reaction kinetics, decomposition products and reaction pathways are performed to reveal the underlying atomistic origins of tribocatalytic reaction on the nano-cutting interface.

The HMX crystals only undergo damage and removal in the indenter cutting, while they appear to accelerate thermal decomposition in the diamond cutting. the C-O affinity is proved to be the intrinsic reason of the tribocatalytic reaction of the HMX-diamond cutting system. The reaction activation energy of the HMX crystals in the diamond cutting system is lower, resulting in a rapid increase in the decomposition degree. The free O atoms can induce the asymmetric ring-opening mode and change the decomposition pathways, which is the underlying atomistic origins of the thermal stability of the HMX-diamond cutting system.

This paper describes a method for analyzing the tribochemical behavior of HMX and diamond, which is beneficial to study the thermal stability in the nano-cutting of HMX.

The learning outcomes of this case are in understanding core concepts of brand management and brand dilution. Assessment of macro-economic risks and proper positioning strategies are the key take-away from this case. The case gives an understanding of how brands are built and positioned, and the pitfalls of poor brand planning and assessment that could lead to brand dilution. The case is useful for highlighting the importance of brand management and the challenges of re-positioning. The discussions would shed light on why it is important to plan and manage spending on marketing for brand building activities, and why brands would suffer when spending is reduced. This case is a teaching case and not a research case. It will help participants assimilate available information in combination with existing academic theories and publications to help develop an accurate assessment and prognosis of the events leading until the point of slicing the case.

Reid & Taylor in 2015 had been reduced to a discounter brand offering extended end-of-season sales when most other competitors have ended their promotions. In the 17 years since its big-budget launch in the Indian market in one of the most memorable brand introductions, Reid & Taylor changed its ambassador twice and repositioned itself thrice. The case would allow participants to delve deeper into aspects of marketing spending, brand management, positioning and advertising effectiveness. The case brings to the fore discussions on marketing, specifically on branding, positioning and its related advertising in the textile sector for a brand that has not been studied in academic literature until the present time. The discussion allows for novelty, involving both forward- and backward-looking assessments and evaluations to help participants better imbibe learnings in brand management and positioning.

The case is suitable for a graduate-level (Master’s level) course in marketing and brand management. This case is suitable for elective courses that discuss positioning and brands.

Teaching notes are available for educators only.

CSS 8: Marketing

This study explores a reactor model designed to describe the decomposition, ignition and combustion of energetic materials in combination with real experimental data for these energetic materials. Spatial uniformity is initially assumed which reduces the system of partial‐differential‐equations to a system of ordinary‐differential‐equations that can be easily solved numerically. The phase‐plane is explicitly presented and examined to illustrate how chemistry and temperature evolve in time. The computations provide an understanding of the vast different timescales that exist and illustrate the singularity structure. Following this the effect of including this chemical regime in an environment typically induced by the combustion of these materials, that is within a compressible fluid flow, is pursued.

The purpose of this paper is to provide details of recent developments in sensors for detecting explosives and chemical warfare agents.

Following an introduction, this paper first discusses a selection of new sensing techniques aimed at detecting explosives and explosive devices. It then considers new developments in sensors for detecting chemical warfare agents. Brief concluding comments are drawn.

This paper shows that a diversity of sensor technologies is being investigated, including various advanced optical methods, nanomaterials, microelectromechanical system, electronic noses, biosensors and electrochemical techniques, several of which offer levels of sensitivity in the parts-per-trillion region. These not only have the potential to yield improved devices for detecting explosives and chemical weapons but may also play a role in health care, environmental monitoring, drug detection and industrial health and safety.

In an era of escalating terrorism and military conflicts, this provides a timely review of new technologies for detecting explosives and chemical warfare agents.

The purpose of this article is to provide information about interactions between pink-pigmented facultative methylotroph (PPFM) organisms and plants, their molecular mechanisms of methylotrophic metabolism, application of PPFMs in agriculture, biotechnology and bioremediation and also to explore lacuna in PPFMs research and direction for future research.

Research findings on PPFM organisms as potent plant growth promoting organisms are discussed in the light of reports published by various workers. Unexplored field of PPFM research are detected and their application as a new group of biofertilizer that also help host plants to overcome draught stress in poorly irrigated crop field is suggested.

PPFMs are used as plant growth promoters for improved crop yield, seed germination capacity, resistance against pathogens and tolerance against drought stress. Anti-oxidant and UV resistant properties of PPFM pigments protect the host plants from strong sunshine. PPFMs have excellent draught ameliorating capacity.

To meet the ever increasing world population, more and more barren, less irrigated land has to be utilized for agriculture and horticulture purpose and use of PPFM group of organisms due to their draught ameliorating properties in addition to their plant growth promoting characters will be extremely useful. PPFMs are also promising candidates for the production of various industrially and medicinally important enzymes and other value-added products. Wider application of this ecofriendly group of bacteria will reduce crop production cost thus improving economy of the farmers and will be a greener alternative of hazardous chemical fertilizers and fungicides.

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