eChapters

Introduction 
There are terrible consequences of climate change for the planet and all human endeavors. According to statistics provided by the Bureau of Social and Economic Affairs which indicate the rate of increase in global human population is frightening; by 2050 (Rebello et al., 2010), the population is expected to surpass 9.8 billion people. Thus, throughout the course of 30 years from now, the community will encounter several issues that will threaten the survival of the majority of living things on Earth. These issues include the shortage of energy, global warming, greenhouse effects, poisonous gas emissions, and abrupt changes in the environment. The usage of natural fuels as our primary source of energy has raised issues in international scientific organizations, which are working to address one of the key causes of these problems (Zhu et al., 2016). The one method to address the issue is to find an environmentally sustainable fossil fuel replacement that can meet the world’s expanding energy needs (Dincer et al., 2000). Biofuels are one of the viable options and it is an alternative to fossil fuels since they are affordable and harmless to the surroundings (Ma et al., 2014). Various countries around the world are utilizing them to partially substitute the consumption of natural fuels. For example, Brazil uses sugarcane, while parts of Asia and Europe primarily rely on palm oil for production. In the case of biofuels made from microalgae, the United States, Brazil, China, and Japan are the biggest producers. Currently, biofuel generation predominantly relies on three distinct generations of raw organic resources, as outlined by Zhu et al. (2016) and Brennan et al. (2016). These groups represent different sources and technologies utilized to produce biofuels on a global scale. Biofuels classified as first-generation are those derived from feedstocks that are suitable for human intake, such as wheat, sugarcane, maize, palm oil, and sugar beet. Biofuels classified as secondgeneration are derived from lignin and cellulosic feedstock, which consists of non-food crop portions including husks, stems, and leaves that are often thrown away (Kalnes et al., 2007 ; Naik et al., 2010 ; Zhu et al., 2016). However, these biofuel sources can partially fulfill the world’s energy demands. One method to overcome this limitation involves third-generation biofuels, which are generated by cultivating single-celled photosynthetic microorganisms capable of converting carbon dioxide and sunlight into biomass and lipid molecules used in biofuel production (Abomohra et al., 2017).

Nanomaterials have emerged as promising candidates for revolutionizing sensing and detection technologies, offering unprecedented capabilities in sensitivity, selectivity, and miniaturization. The current chapter provides a concise overview of recent advancements in the utilization of nanomaterials for sensing and detection applications. It encompasses a diverse range of nanomaterials, including nanoparticles, nanotubes, and nanowires, each exhibiting unique properties that enable enhanced performance in sensing applications. The integration of nanomaterials into sensing platforms has demonstrated remarkable progress in various fields, such as environmental monitoring, healthcare diagnostics & security applications.

This section explores how nanoparticles have a significant influence on sensing and detection, explaining how they have revolutionized analytical capabilities. Our trip through many kinds of nanomaterials, such as metal nanoparticles, semiconductor nanomaterials, and carbon-based structures, aims to explore their distinct features and how they might be used for novel sensing methods. The intricacies behind sophisticated sensor technologies are clarified through an examination of plasmonic sensing, quantum dot applications, and conductive nanomaterial responses. In order to improve selectivity, the chapter emphasises surface modifications and biomimetic coatings as key components of strategic functionalization techniques.

Nanomedicine, an interdisciplinary field at the intersection of nanotechnology and medicine, has emerged as a promising avenue for addressing complex health challenges. One area of significant interest is the application of nanotechnology in maintaining and improving gut health. This chapter provides a concise overview of the current state of research in nanomedicine's role in promoting gastrointestinal well-being.

Nanoparticles, with their unique physicochemical properties, offer novel approaches for targeted drug delivery, imaging, and diagnostics in the gastrointestinal tract. Engineered nanoparticles can navigate the harsh conditions of the digestive system, delivering therapeutic agents precisely to the intended sites within the gut.

Nanomaterials, a cornerstone of nanotechnology, encompass a broad array of particles showcasing remarkable properties and diverse applications. This chapter outlines the classifications and applications of various nanomaterials, including organic, semiconductor, metal, metal oxide, and carbon-based nanoparticles. Each type offers unique characteristics, such as biodegradability, optical and electrical properties, making them valuable in fields like drug delivery, electronics, and catalysis. Furthermore, this study focuses on the interactions of nanoparticles with living organisms, emphasizing their impact on immune systems across plants, invertebrates, and humans. 

Bipolar plates (BPPs) are essential components of proton exchange membrane fuel cells, performing functions related to gas distribution, current collection, thermal management, water management, and cell separation. This chapter examines conventional and advanced materials used for BPPs, with particular emphasis on nanoparticle-enhanced composite systems. The incorporation of nanoparticles can improve electrical and thermal conductivity while reducing weight and supporting environmental sustainability. Materials, synthesis and fabrication techniques, and additive manufacturing approaches are discussed. The chapter also considers cost and scalability because these factors influence the wider commercialization of fuel-cell technologies. Nanoparticle-reinforced composites are presented as promising lightweight alternatives for sustainable energy applications.

Introduction

Nanotechnology is a scientific and technological field that manipulates matter at the nanoscale to create, design, characterize, and use structures, systems, and devices with novel properties (Sattler 2016). Nanoparticles are one of the most important products of nanotechnology, as they exhibit different features from their bulk counterparts due to their size and shape (Sabir et al., 2014). Nanoparticles have applications in various disciplines, such as materials science, medicine, agriculture, physics, and chemistry.

Synthesis of nanoparticulate metal composites (NMCP) presents a multitude of advantages compared to conventional dosage forms. Acne, a multifactorial skin condition, predominantly involves the pilosebaceous unit and is primarily caused by bacterial species such as Propionibacterium acnes and Acne vulgaris. A staggering 95% of the global population is afflicted by acne. Leveragitng NMCP strategies holds immense promise for innovating novel, efficacious, and low-dose treatments for managing acne. This review delves into various nanotechnological methodologies tailored for effectively addressing acne. Methods: This review encompasses recent advancements pertaining to NMCP carriers aimed at treating acne.

Introduction

Nanopesticides are pesticides that use nanomaterials or nanotechnology to improve their effectiveness and safety in agriculture. Nanomaterials are materials that have at least one dimension between 1 and 200 nm. Nanomaterials have different properties than their bulk counterparts, such as higher surface area, reactivity, and mobility. Nanopesticides can be formulated in various ways, such as nanosized active ingredients, molecular active ingredient nanocarrier complexes, or active ingredients encapsulated or coated by nanomaterials (Deka et al., 2021; Xu et al., 2022).

The hazardous toxic metals like cadmium (Cd), arsenic (As), mercury (Hg), lead (Pb), and chromium (Cr), which have detrimental health effects, are naturally discharged into the atmosphere in various ways viz., industrial wastes, anthropogenic sources, etc. Heavy metal pollution of the atmosphere has become a frightening ecological concern that has created serious threats to the ecosystem. These metals have been identified as group I, human carcinogens due to their persistence in the surroundings and bio-magnification in biological systems. Thus, the removal of heavy metals from the atmosphere becomes a serious matter from the biological and environmental point of view. In the past following techniques adoptedfor toxic heavy metals remediation were classified are bioadsorption, ion exchange, membrane filtration, flotation, and solvent extraction techniques.

Introduction 
Modern energy policies place a strong emphasis on developing low-carbon energy sources while also ensuring that society has enough energy security. However, because fossil fuels play such a vital part in the global energy system, measures to reduce GHG emissions from fossil fuels must be found. Researchers and scientists are examining the characteristics of materials at the nanoscale level to identify compounds that might boost the efficiency of the energy sources we now use. The physical properties of several materials (such as strength, heat conductivity, and reflectance) alter at the nanoscale in comparison to their bulk properties. When compared to their bulk properties, several materials have distinct physical properties at the nanoscale (such as strength, electrical and thermal conductivity, and reflectance). several materials on a nanoscale. Additionally, materials with nanostructures are more suited for material-to-material interactions due to their higher surface to unit weight volume ratio. This is a useful characteristic as many chemical and electrical reactions take place at surfaces and are greatly impacted by the chemical composition of the reactant and the surface’s structure. The goal of nanotechnology research in the fossil fuel industry is to create novel catalysts that will improve the energy efficiency of the fossil fuel breakdown process. Given that heavy crude oil contains sulphur. The transformation of coal into liquid fuels for use in transportation requires the employment of several kinds of catalysts. Furthermore, because of their structure and the presence of electrons in their outer orbitals, which increases the potential for chemical reactions, the majority of typical catalysts used in cars today rely on valuable metals like platinum. Concerns about the supply of precious metals are raised by the industrialised world’s transport networks’ explosive expansion. Finding more affordable and readily available substitutes is imperative given the scarcity and high cost of these materials, and this will be emphasised in the researchers’ upcoming work. Additionally, because of their unique qualities that relate to the phenomena of corrosion resistance or their exceptionally strong qualities that are advantageous in turbomachinery components, nanomaterials are also helpful in power systems (1) . The application of nanotechnology in the production of resistant ceramics for use as insulators in gearbox lines results in smooth coatings that reduce the likelihood of fouling in cooling water intakes. Additionally, nanotechnology can improve a material’s conductivity and produce a superconductor at ambient temperature rather than a superconducting characteristic at very high temperatures. Renewable energy sources—also known as “green energy”—such as solar, wind, and ocean energy— allow countries to reduce their reliance on petroleum and address environmental problems related to the use of fossil fuels. In these technologies, nanotechnology is also employed. Mao and Chen concentrated their research efforts on developing nanotechnologies for a select group of renewable energy sources, including fuel cells, solar cells, hydrogen storage, and hydrogen generation. This research aims to provide a comprehensive comparative analysis of nanotechnology’s application to the development of sustainable energy systems, including nanomaterials, nanofluids, and nanostructures.

Introduction 
The creation of molecular-scale machinery and gadgets at a few nanometers (10^-9 m), known as nanotechnology, has a substantial impact on this topic and dramatically reduces the size of a cell. To assess how nanoparticles affect the synthesis and production of biofuels, particularly biodiesels, a variety of nanomaterials, including nanofibers, nanotubes, and nanometals, are being used (1). Research on biodiesel has shown that utilizing nanotechnology and nanomaterials can be a useful approach to implementing low-cost techniques that improve manufacturing quality. Because of their tiny size and special qualities, such as a high surface area-to-volume ratio, catalytic activity, considerable crystallinity, adsorption capacity, and stability, nanoparticles (NPs) are useful in the generation of biodiesel (2). Because of their high potential recovery properties, metal oxide nanoparticles and carbon nanotubes are frequently used as nanocatalysts in the synthesis of biofuel and biodiesel (3, 4).This chapter critically evaluates the application of nanotechnology in the manufacturing and enhancement of biodiesel, addressing key challenges and potential advancements. Microalgae have been identified as a potentially useful feedstock for biodiesel production. The process of harvesting microalgae can be made much more efficient by employing a range of nanoparticles. Additionally, cost-cutting is facilitated by the recycling of nanomaterials and their incorporation into procedures including cell disruption, extraction, and harvesting. Furthermore, an array of nanocatalysts holds promise for enhancing the efficiency of biodiesel conversion (5). Classification of nanoparticles based on physical attributes as shown in (Fig.1). However, there is a growing emphasis on improving combustion efficiency and reducing harmful emissions in the engine industry and its associated fields. Several studies indicate that the introduction of nanoadditives into blends of diesel and biodiesel fuels has yielded significant results.

Nanotechnology has been successfully applied in various fields such as agriculture, biochemistry and medicine. However, its application in food systems has been new and is yet to be scrutinised. It offers a range of physical and chemical benefits that can be employed in production, development, fabrication, packaging, storage and food distribution systems. These novel nanomaterials such as nanocapsules, nanocomposites, nanoemulsions, nanoencapsulation, nano packaging, nanotubes and nanosensors have been used to improve food quality with better shelf life. However, there is concern about the safety of these nanomaterials, especially because of partial knowledge about the effects of these materials on human health.

Despite substantial advances in the diagnostics and treatment of diseases, parasitic infections are a major global health issue causing significant mortality and morbidity. Currently, chemotherapeutic antiprotozoal drugs, anthelmintic and anti-ectoparasitic agents are used to treat, but resistance to these drugs has developed due to overuse. In this scenario, nanoparticles are proving a major breakthrough in the treatment and control of parasitic diseases. In the last decade, there has been enormous development in the field of nano medicine for parasitic control. Gold and silver nanoparticles have shown promising results in the treatments of various types ofparasitic infections. These nanoparticles are synthesized through the use of various conventional and molecular technologies and have shown great efficacy. 

Agriculture serve as a backbone in improving economic growth of a country as well as it provides a base in meeting various needs of people in direct and indirect ways. The recent advancement in nanotechnology has shown a path to develop traditional agriculture into a sustainable practice. Several nanochemicals emerged as promising agents for better plant growth, used as fertilizer, pesticides, control weeds and also used as antimicrobial agents in food packaging. Nanotechnology may act as sensor for checking soil health of agriculture fields.

Nanotechnology epitomizes one of the most dynamic and transformative fields in modern science and technology. This multidisciplinary domain bridges chemistry, physics, biology, along with engineering, enabling the creation of materials and devices with extraordinary properties and applications. The book chapter reflects the research and patenting trends in nanotechnology. USA leading the global share for most patents granted followed by South Korea, Japan, China and Germany for the top five spots contributing more than 76% of all the granted patents by EPO & USPTO related to nanotechnology. Nanotechnological products in relation to sub-industrial areas of medicine, food, agriculture, cosmetics, environment, and renewable energies are also highlighted in chapter. 

Introduction
Education and Its Evolution
Education is a process of learning, which involves both formal and informal modes of learning, which transforms the behaviour, skills, knowledge attitudes, and beliefs of the learner. For this reason, it is more deliberate than other education activities since it is a deliberate effort to create learning in a bid to achieve set goals and objectives. Ordinarily, education is characterized by a systematic learning system that is complemented by curricula and instructional materials in different disciplines. This includes talking and explaining, discussing and questioning, performing and observing so as to reach individual students. Communication is also considered as necessary as education is a process of interconnecting people, exchanging information, and learning how to deal with society members. It also develops critical skills such as analysis and developing insights, due to its capacity to offer information to be analyzed, find solutions and then make sound decisions. Education implies character building and it shapes people into responsible members of society. Education also fosters a construct of perpetuity learning which in this case is strengths toward self and career. There is the principle of non-selectiveness as one of the basic principles of education, as education must be provided to all so that all students should be given an equal opportunity. Learners’ understanding and progress can be measured therefore, assessment and evaluation were part of the program to ensure that teaching strategies can be improved. In addition, it has a 96 | Sustainable Development Goals, Health & Education sociocultural function of passing on a culture from one generation to another, and thus preserving social and cultural development and growth. In its strictest sense education is learning as it is getting acquainted with information as well as has the added dimension of moulding positive character in the learners so that they and society can be the better for it. From antiquity to the present, education has undergone tremendous change, having a huge impact on the advancement of society. When education was first developed in ancient communities, it took the form of apprenticeships, oral traditions, and storytelling to impart cultural values, religious convictions, and useful survival skills. For the elite, it was frequently reserved, preventing access for the general public and preserving social hierarchies. A teacher-centered approach limited student interaction and critical thinking, and the curriculum prioritized memorization and rote learning with a focus on mythology and societal responsibilities. In comparison, the goal of contemporary education is to develop students’ ability to think critically, be creative, and solve problems in a formal, structured manner. Regardless of one’s background, access to it is considered a fundamental right that fosters inclusivity and social fairness. The curriculum’s diversity promotes inquiry and discovery by including technology, the arts, and the sciences. A variety of student-centered, modern teaching techniques are used to improve critical thinking and participation. Education is now a key factor in social and economic development as a result of this change, encouraging creativity and producing knowledgeable citizens who take an active role in solving global issues. After all, if education in the past served to uphold hierarchical institutions, education today aims to dismantle obstacles and promote equality in society.

INTRODUCTION

The discipline of Agrometeorology, an applied science is less than fifty years old. Its services are operationally used by individual farmers in developed countries, and by agricultural or development services in more than half of the countries of the world. Its contribution to agricultural production by examining forecast is sought in virtually all countries. In many countries, the respective governments have expressed the desire to use meteorological information to a much larger extent in day-to-day farm planning and operations. The climate database is used for the development of practical criteria in planning and management of irrigated and rainfed crop production system (Martin Smith, 2000).

Though a huge set of Agromet data exists in India, its utility has not been effective due to the scattered location of these data sources and the impediments for free flow of data to the users to analyze and interpret for real-time decision making in agriculture. There is also a considerable time lag between the actual observation and data availability. In view of the importance and the immediate exigency to centralize the database system for helping the researchers and planners, a central agrometeorological databank facility funded by DST from 1998 to 2003 and later by ICAR with the following objectives was established at Central Research Institute for Dryland Agriculture (ICAR), Hyderabad.