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Purpose – In this study, the possibility of the application of rice husks for adsorbing Mn(II) ion in the water phase has been studied.

Design/Methodology/Approach – Experimental studies have been initiated by preparing activated carbon from rice husks. The activation of rice husks was done using both physical and chemical treatment methods through heating at 110 °C and washing with citric acid activator at 0.2 M, 0.4 M, and 0.6 M. The adsorption tests were conducted as two part tests: preliminary and primary. The preliminary test was conducted to choose the best condition of four independent variables, i.e., contact time (0–120 minutes), activator concentrations (0.2, 0.4, and 0.6 M), initial Mn(II) concentrations (10, 20, 50, 100, 200, and 400 mg/L), and adsorption temperatures (30, 47, and 67 °C).

Findings – By identifying the substituted groups using Fourier Transform Infrared Spectroscopy after activation with citric acid, it was found that the highest transmittance percentage was present in activated carbon with 0.2 M of citric acid. The best adsorption capacity and efficiency was 13.87 mg/g and 79.60%, respectively, which were obtained at 200 mg/L initial concentration with a 0.2 M citric acid concentration for 120 min contact time at 47 °C. These results lead to a conclusion that rice husks after activation with citric acid can be applied as an adsorbent for Mn(II) adsorption in the water phase.

Research Limitations/Implications – The activated carbon produced was only applicable for the adsorption of Mn(II) ions from the water phase, but not applicable for the adsorption of other heavy metals ions.

Practical Implications – Rice husks were potentially prepared as an adsorbent for Mn(II) ion adsorption in the water phase that was low cost, environmental friendly, and easy to prepare.

Originality/Value – Activated carbon prepared from biomass was mostly carried out using acids at high concentrations while the study was conducted using weak acids (citric acid) at low concentrations.

The increasing accumulation of synthetic plastic waste in oceans and landfills, along with the depletion of non-renewable fossil-based resources, has sparked environmental concerns and prompted the search for environmentally friendly alternatives. Biodegradable plastics derived from lignocellulosic materials are emerging as substitutes for synthetic plastics, offering significant potential to reduce landfill stress and minimise environmental impacts. This study highlights a sustainable and cost-effective solution by utilising agricultural residues and invasive plant materials as carbon substrates for the production of biopolymers, particularly polyhydroxybutyrate (PHB), through microbiological processes. Locally sourced residual materials were preferred to reduce transportation costs and ensure accessibility. The selection of suitable residue streams was based on various criteria, including strength properties, cellulose content, low ash and lignin content, affordability, non-toxicity, biocompatibility, shelf-life, mechanical and physical properties, short maturation period, antibacterial properties and compatibility with global food security. Life cycle assessments confirm that PHB dramatically lowers CO₂ emissions compared to traditional plastics, while the growing use of lignocellulosic biomass in biopolymeric applications offers renewable and readily available resources. Governments worldwide are increasingly inclined to develop comprehensive bioeconomy policies and specialised bioplastics initiatives, driven by customer acceptability and the rising demand for environmentally friendly solutions. The implications of climate change, price volatility in fossil materials, and the imperative to reduce dependence on fossil resources further contribute to the desirability of biopolymers. The study involves fermentation, turbidity measurements, extraction and purification of PHB, and the manufacturing and testing of composite biopolymers using various physical, mechanical and chemical tests.

Derek Parfit’s non-identity problem calls into question the claims of both the state and individuals when they purport to act for the benefit of future children. This paper discusses how adoption of the non-identity argument as a legal argument could affect reproductive and family policy, demonstrating that it undermines the child-centric approach to assigning legal parentage. The paper concludes, however, that these non-identity problems can be solved by the expected value approach, which demonstrates that efforts to benefit future people can be logically coherent even if those efforts also affect the genetic identities of the future people.

Problem solving is a key skill for success in general chemistry, and yet it remains a persistent challenge for instructors to teach and for students to learn. One of the primary causes of this difficulty is that the majority of problem solving is actually deciding how to solve the problem – a task that experts do automatically and that befuddles novice students. The author created a decision-based learning (DBL) model for the general chemistry students to solve problems related to heat and enthalpy. The process of creating the decision model was enlightening to the author as an instructor. It revealed expert blind spots and made the author aware of places in the curriculum where the instruction was unclear or incomplete. When the author implemented the model with the students, it resulted in significant learning gains for students who worked with the model outside of class to practice problem solving. Additionally, the students reported improved attitudes toward problem solving such as decreased anxiety and being able to see the big picture. Since this initial foray into DBL, the author has incorporated explicit instruction for conditional knowledge construction in other parts of the curriculum. As the author works to make thinking more explicit, students are better able to master challenging problem-solving skills in chemistry.

Purpose – Description of the effects of the revolution in neuroscience and other areas of biology that can help to explain the roots of some portion of violent crime. The chapter reconsiders the role of brain chemistry in social behavior and violent behavior. To illustrate the interdisciplinary complexities entailed when linking brain chemistry to policy decisions concerning violent crime, this analysis has four main stages: first, why might SiFs (H2SiF6 and Na2SiF6, jointly called “silicofluorides” or SiFs) be dangerous? Second, what biochemical effects of SiF could have toxic consequences for humans? Third, on this basis a research hypothesis predicts children in communities using SiF should have increased uptake of lead from environmental sources and higher rates of behavioral dysfunctions known to be caused by lead neurotoxicity.

Design/methodology/approach – To illustrate the implications of the new issues involved, this chapter focuses on a public policy that inadvertently seems to increase rates of violent crime. Since violent behavior is one of the effects of lead neurotoxicity, the hypothesis is tested using multiple sources of data including rates of violent crime studied using a variety of multivariate statistical techniques (including analysis of variance, multiple regression, and stepwise regression).

Findings – Various data sources point to greater violence among individuals with greater exposure to SiFs.

Originality/value – Testing hypotheses linking neurotoxins to violent behavior reveals the generally unsuspected value of analyzing human social behavior and public policy from the perspective of evolutionary psychology.

Strategic Management, Business Ethics.

This case is suitable to be used in advanced undergraduate and MBA/MSc level.

The case accentuates the challenges faced by Geetanjali Woollens in its mechanical recycling business which is proving detrimental to its African business expansion plans. The case is developed from the episodes of divergence in January 2018 when the buyers’ non-acceptance of mechanically recycled products initiated a managerial dilemma between “business sustenance” and “sustainable business” for Geetanjali Woollens. Being associated with the recycling business for more than 25 years, Madhukar Ghosh, the General Manager at Geetanjali Woollen recycling unit, was delving upon practical, supply-chain-wide solutions to generate standard acceptance norms for mechanically recycled textiles. For him, ethical purpose of business existence was equally important as the profit motive. Bringing operational clarity and standardized regulatory framework still seemed a big challenge for international policymakers and torchbearers of environmental responsibility, and Governments and NGOs popularizing green initiatives. Lack of policy guidelines for business behavior was exacerbating the business functioning. Madhukar knew that consistent buyer policies and standard regulatory framework could clear some mist and induce maturity in the concept of circular economy. Some formalizations were expected till the end of December 2018, if the deadlines did not get pushed further.

The objectives of this case are as follows:

• to highlight the limitations that recycled apparel and textile products have and the concerns that emerge for buyers, designers, and consumers, due to these limitations;

• to highlight the myopic business vision with which the recycling business is suffering due to the lack of a formalized regulatory framework, which in turn is creating various system barriers and making recycling business an unattractive proposition;

• to appreciate the contribution of mechanical recycling of post-consumer textile waste as a closed-loop manufacturing technique in recouping the eco-impacts of increased disposal of apparel and textile products; and

• to promote discussions for innovative solutions for limitations and concerns related to substances of concern in the recycling business and deliberations for a more effective tracking of such substances to facilitate buyer acceptance of mechanically recycled products.

to highlight the limitations that recycled apparel and textile products have and the concerns that emerge for buyers, designers, and consumers, due to these limitations;

to highlight the myopic business vision with which the recycling business is suffering due to the lack of a formalized regulatory framework, which in turn is creating various system barriers and making recycling business an unattractive proposition;

to appreciate the contribution of mechanical recycling of post-consumer textile waste as a closed-loop manufacturing technique in recouping the eco-impacts of increased disposal of apparel and textile products; and

to promote discussions for innovative solutions for limitations and concerns related to substances of concern in the recycling business and deliberations for a more effective tracking of such substances to facilitate buyer acceptance of mechanically recycled products.

Sustainable atmospheric management today involves a complex set of issues arising from the deliberate or inadvertent use of the atmosphere as a repository for waste products arising from human activities. Urban pollution affects human health, building materials and vegetation. Acidic emissions and excess nutrients produce both acid rain and dry deposition that affect terrestrial, freshwater and ocean chemistry and ecosystems. The production and effects of atmospheric pollution can transcend national boundaries and thus mitigation will require cooperation on regional and global levels, as well as local action. Global pollution includes greenhouse gases and atmospheric particles which are changing the global climate and affecting human health. While technological solutions will play an important part, the large reductions in emissions necessary to achieve sustainability will involve adopting lifestyles that conserve energy and minimise pollution. These concerns were foreshadowed in the writings of Fritz Schumacher.

Purpose – This study was conducted to determine the effect of peel of Arabica coffee (PAC) with Win Prob Probiotic on crude fiber content and fiber fraction (neutral detergent fiber, NDF; acid detergent fiber, ADF; cellulose; hemicelluloses; and lignin). The hypothesis of this study is that PAC fermentation using Probiotic Win Prob can decrease the content of crude fiber and fiber fraction.

Design/Methodology/Approach – The research design applied was a factorial completely randomized design with three treatments and three replications. Factor A (probiotic dose) consisted of three doses: 2.5%, 5%, and 7%, in addition, there are three fermentation durations considered as factor B, which are 20, 30, and 40 days.

Findings – The result of this study indicates that the content of crude fiber and fiber fractions can decrease each amount of the variable of this study. The best treatment was obtained in A3B3 with 7% probiotic with 30 days of fermentation. Rough fiber PAC decreased up to 27.66% and NDF content decreased by 3.6%. Moreover, ADF content decreased up to 4.10%. The last lignin decreased by 18.75%.

Research Limitations/Implications – Only a small portion of coarse fiber and fiber fractions in PAC is fermented with Win Prob probiotics. So we can try other ways to reduce the coarse fiber and PAC fiber fractions such as the combination of ammonium and fermentation (amofer).

Originality/Value – The PAC has a high content of crude fiber and fiber fractions (NDF, ADF, cellulose, hemisellulose, and lignin), and so it is recommended as ruminants for feed ingredients.

Organizational change is a key mechanism to ensure the sustainability of healthcare systems. However, healthcare organizations are persistently difficult to change, and literature is riddled with examples of failed change endeavors. In this chapter, we attempt to unravel the underlying causes for failed organizational change. We distinguish three types of change with different levels of depth that require different change approaches. Transformations are the deepest forms of change where beliefs and principles need to be modified to successfully influence routines. Renewals are deep forms of change where principles need to be modified to successfully influence routines. Improvements are shallow forms of change where only modifications at the level of routines are needed. Using deoxyribonucleic acid (DNA) as our metaphor, we propose a theory of “organizational DNA” to understand organizations and these three types of organizational changes. We posit that organizations are made up of a double helix consisting of a so-called “social string,” which contains the “soft” interaction or communication among the organization's members, and a so-called “technical string,” which contains “hard” organizational aspects such as structure and technology. Ladders of organizational nucleotides (i.e., Routines, Principles, and Beliefs) connect this double helix in various combinations. Together, the double helix and accompanying nucleotides make up the DNA of an organization. Without knowledge of the architecture of organizational DNA and whether a change addresses beliefs, principles, and/or routines, we believe that organizational change is constrained and based on luck rather than change management expertise. Following this metaphor, we show that organizational change fails when it attempts to change one part of the DNA (e.g., routines) in a way that renders it incompatible with the connecting components (e.g., principles and beliefs). We discuss how the theory can be applied in practice using an exemplar case.