Bøker av Raj Kumar

"Whispers of Serendipity" is a heartfelt novel that explores the transformative power of love amidst chance encounters and the beauty found in embracing imperfections. Set in the enchanting city of Serendipity, this captivating story follows Emma and Gabriel as they navigate the dance of fate, learning to cherish their flaws and nurture an authentic and lasting connection. With themes of resilience, vulnerability, and the enduring power of love, this novel leaves readers inspired to believe in the magic of serendipity and the profound growth that comes from embracing love's imperfections.

Compact wireless antennas with metamaterials are a revolutionary advancement in antenna technology that offers significant benefits in terms of size reduction and enhanced performance. Metamaterials are artificially engineered structures with unique electromagnetic properties that can manipulate and control the propagation of electromagnetic waves. Traditional wireless antennas are typically limited by their physical size, which is directly proportional to the operating frequency. However, by leveraging the properties of metamaterials, engineers have been able to design compact antennas that can operate efficiently across a wide range of frequencies, including those used for wireless communication, such as Wi-Fi, Bluetooth, and cellular networks. The key advantage of using metamaterials in compact wireless antennas is their ability to manipulate the electromagnetic waves in unconventional ways. By carefully designing the structure and arrangement of the metamaterial elements, it becomes possible to achieve properties like negative refractive index, which allows bending and focusing of electromagnetic waves. This enables the creation of antennas that can radiate and receive signals more efficiently, leading to improved performance and increased range. Moreover, metamaterial-based antennas can be designed to exhibit unique electromagnetic properties, such as beam steering, beam shaping, and polarization control. These capabilities provide flexibility and adaptability, allowing the antennas to be dynamically reconfigured to optimize signal reception in different environments or to establish directional communication links. Another significant advantage of compact wireless antennas with metamaterials is their potential for integration into small devices and systems, such as smartphones, wearables, Internet of Things (IoT) devices, and autonomous vehicles. The reduced size and improved performance of these antennas enable seamless integration without compromising the overall functionality and form factor of the devices. In conclusion, compact wireless antennas with metamaterials offer a transformative solution to the challenges of antenna miniaturization and performance enhancement. Their ability to manipulate electromagnetic waves in unconventional ways opens up new possibilities for improved wireless communication systems across various applications, paving the way for a more connected and efficient future.

This book describes the development of polymer composites with varying weight percentages of CSP/WSP (1:1) particulates and epoxy resin as the matrix material, fabricated using a hand lay-up technique resulting in six specimens. Physical properties such as density, moisture content, and dimensional stability were investigated, indicating the improved dimensional stability of CSP/WSP (1:1) reinforced epoxy composites with 2.5 wt.% particulates. The flammability behavior, flexural properties, and impact characteristics of the composites were also studied using statistical software and ANOVA to identify dominating parameters. Results showed that filler load and speed had an ascending effect on flexural properties. The composites were found to have promising physical and mechanical properties, indicating their potential for various engineering applications. The addition of CSP and WSP as reinforced particles to contribute the development of a new class of epoxy-based composites. This book highlights the importance of selecting suitable materials for matrix, reinforcement, and particulate and investigating physical and mechanical properties for the development of new composite.

Even after losing, you have to keep it in any condition,The ever-passionate desire to win,After autumn, when spring comes,So will give enthusiasm, don't keep despair.Drink the pain and sing the song of happiness,Laughing, humming something,In a smile, forget all your sorrows,Wake yourself up from your dreams, wake others up.

Research work on Micro-propagation techniques of Kinnow mandarin was carried out at the TCL, SKRAU, Bikaner. Several aspects such as establishment of axenic culture, axillary bud proliferation, rooting in micro-shoots and in-vitro shoot tip grafting formed various parts of the entire investigation. The mercuric chloride (0.1 %) is the best treatment for establishment of aseptic culture. Among auxin used singly for shoot regeneration parameters lower levels of NAA were found better than IAA. Among cytokinin, BAP was found better for shoot multiplication whereas, kinetin was better for length of shoots. The higher level of cytokinins had negative effect on all parameters. The combination of cytokinins with auxin had better synergetic effect. Lower levels NAA and IBA were found better as compared to higher levels. The synergetic effect of both had pronounced effect. In in-vitro shoot tip grafting experiments, kinnow/Carrizo (12 days old) seedling was found better rootstock than others. Among PGRs 2,4-D was better as pre treatment for increasing success of STG. In green house, maximum survival of plantlets was recorded in Rough lemon and STG on carrizo.

This book will familiarise students with the basics of some of the well-known experimental molecular biotechnology and related disciplines. The book intends to give balanced exposure to experimental techniques, procedures, and data analysis. The book will be useful for undergraduate students as a supplementary/reference text.

Agroforestry is the growing of both trees and agricultural crops on the same piece of land. They are designed to provide tree and other crop products and at the same time protect, conserve, diversify and sustain vital economic, environmental, human and natural resources. Agroforestry differs from traditional forestry and agriculture by its focus on the interactions amongst components rather than just on the individual components themselves. Agroforestry is recently gained great importance nationally and internationally due to its role in providing large number of ecosystem services. This book covers all basic and applied aspect of agroforestry e.g. planning, designing, tree improvement, management, ecosystem services, climate change, industrialization, engineering and, agroforestry programmes and policy in an easy and understandable manner. The book has been prepared to serve as a reference book to all the stakeholders engaged in activities related to agroforestry development. This book can also be useful for teachers and students engaged in the field of agriculture, environmental science and engineering, climate science, policy planning and land use system designing, etc.

This experimental manual provides comprehensive information about the designing and execution of the experimental protocols for radioprotective drug screening. The manual divided into seven sections. Each section arrange in chronological order from preliminary to advance methods to evaluate a drug molecule for its probable radioprotective properties. This manual is first of its kind in the area of radiation biology and radioprotection. Preliminary in vitro assay (section I) designed to evaluate in vitro antioxidant activity of test compound which are integral part of radioprotection. Secondary methods (Section II) designed to evaluate radioprotective efficacy of test compound towards biomacromolecules i.e. proteins, enzymes and plasmid DNA. The third section (Section III) of this manual dedicated to evaluate in vitro radioprotective potential of test compound in cell culture in terms of colony forming unit (CFU), superoxide dismutase, catalase, glutathione reductase, glutathione-s-transferase, and lysosomal membrane stability. Radiation induced gemonic DNA damage and apoptosis is the common cause of cell death in cells. Therefore, to assess DNA damage and apoptosis inhibitory activity of the test compound a complete section (section IV) was formulated. Further, to estimate mitochondrial DNA damage and perturbation in oxidative phosphorylation as well its modulation by radioprotective drug molecule detailed protocols were mentioned in section V and section VI of the manual. Last but not the least, section VII of this manual was designed to evaluate immune system radioprotection by radioprotective compound. The manual arranged in systematic manner, by follow the protocols of this manual researcher can confirm and classify the radioprotective efficacy of the test molecule.

Comprehensive guide to traumatic brain injury discussing numerous conditions resulting from head trauma, as well as basic epidemiology, biomechanics and pathology.