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Studies on "Perfect" Hyperbranched Chains Free in Solution and Confined in a Cylindrical Pore
by Lianwei LiLianwei Li's Ph. D. thesis solves a long-standing problem in polymer physics: how does a hyperbranched chain pass through a cylindrical pore smaller than its size under an elongational flow field? The question was asked by the Nobel Laureate, the late Professor de Gennes in the 70s but has never been seriously addressed through real experiments. This thesis outlines how Lianwei Li developed a novel polymerization strategy using a seesaw-type macromonomer to prepare a set of "defect-free" hyperbranched chagins with different overall molar masses and controllable uniform subchain lengths. The author then unearthed how the critical (minimum) flow rate at which a hyperbranched chain can pass through the pore, is dependent on the overall molar mass and the subchain length. The experimental results give a unified description of polymer chains with different topologies passing through a small cylindrical pore, which enables us to separate chains by their topologies instead of their sizes in ultrafiltration. In addition, this research also reveals how the chain structure of amphiphilic hyperbranched block and graft copolymers affect their solution properties, including the establishments of several classic scaling laws that relate the chain size and the intrinsic viscosity to the overall molar mass and the subchain length, respectively. This work has led to numerous publications in high-impact peer-reviewed journals.
Studies on Porous Monolithic Materials Prepared via Sol–Gel Processes
by George HasegawaThis thesis focuses on porous monolithic materials that are not in the forms of particles, fibers, or films. In particular, the synthetic strategy of porous monolithic materials via the sol-gel method accompanied by phase separation, which is characterized as the non-templating method for tailoring well-defined macropores, is described from the basics to actual synthesis. Porous materials are attracting more and more attention in various fields such as electronics, energy storage, catalysis, sensing, adsorbents, biomedical science, and separation science. To date, many efforts have been made to synthesize porous materials in various chemical compositions--organics, inorganics including metals, glasses and ceramics, and organic-inorganic hybrids. Also demonstrated in this thesis are the potential applications of synthesized porous monolithic materials to separation media as well as to electrodes for electric double-layer capacitors (EDLCs) and Li-ion batteries (LIBs). This work is ideal for graduate students in materials science and is also useful to engineers or scientists seeking basic knowledge of porous monolithic materials.
Studies on the 2011 Off the Pacific Coast of Tohoku Earthquake (Natural Disaster Science and Mitigation Engineering: DPRI reports)
by Hiroshi KawaseThe Tohoku earthquake on March 11, 2011, officially designated the “Off the Pacific Coast of Tohoku, Japan Earthquake” by the Japan Meteorological Agency caused an unprecedentedly severe disaster in the northeastern part (Tohoku) of the Japanese island of Honshu. This first volume of the series Natural Disaster Science and Mitigation Engineering: DPRI Reports covers various aspects of investigations of scientific findings as well as issues related to the disaster and the subsequent evacuation necessitated by the earthquake. The series presents recent advances in natural disaster sciences and mitigation technologies developed in Japan, which will be valuable for the mitigation of disasters of a similar kind resulting from future events around the world.
Studies on the Confocal Laser Microscope (SpringerBriefs in Applied Sciences and Technology)
by Abdallah Mohamed HamedThis book provides a thorough exploration of various modulated apertures and their impact on improving microscope resolution, with a focus on confocal scanning laser microscopy (CSLM). Over the course of eleven chapters, it looks at both the theoretical aspects and practical applications of different aperture shapes. Chapters 1 and 2 review apertures with linear, quadratic, and concentric black-and-white (B/W) zones, along with linear-quadratic and polynomial designs. Additionally, apertures with Hamming, Cauchy, rectangular, and hexagonal shapes are analyzed for their potential to enhance imaging performance. Chapter 3 presents the computation of coherent transfer functions (CTFs) for selected modulated apertures, offering insights into their influence on imaging quality. Chapter 4 focuses on confocal microscopes, exploring how these apertures affect the imaging of microscopic objects. A theoretical study of coherent non-scanned laser microscopes (CNSM) is covered in Chapter 5. Chapter 6 addresses the computation of lateral and axial point spread functions (PSFs) in confocal imaging systems that use binary amplitude masks, while Chapter 7 investigates the effects of misalignment errors combined with wavefront aberrations in systems using linear and quadratic apertures. In Chapter 8, diffraction intensity is calculated for a confocal microscope with a laterally displaced truncated Gaussian aperture, extending the principles of Marechal microscopy to confocal scanning microscopy. Chapters 9 and 10 examine spatial coherence in confocal optical systems, particularly in the context of quadratic and concentric B/W apertures. The book concludes in Chapter 11 with an application of cardiac apertures in CSLM, demonstrating their use in processing cardiac images. This work serves as a valuable reference for researchers and professionals interested in advancing microscope resolution through innovative aperture design and analysis.
Studies on Urban Vehicular Ad-hoc Networks
by Minglu Li Hongzi ZhuWith the advancement of wireless technology, vehicular ad hoc networks (VANETs) are emerging as a promising approach to realizing "smart cities" and addressing many important transportation problems such as road safety, efficiency, and convenience. This brief provides an introduction to the large trace data set collected from thousands of taxis and buses in Shanghai, the largest metropolis in China. It also presents the challenges, design issues, performance modeling and evaluation of a wide spectrum of VANET research topics, ranging from realistic vehicular mobility models and opportunistic routing, to real-time vehicle tracking and urban sensing applications. In addition to the latest research and techniques, the reader will also learn the trace-driven methodologies and tools of performance modeling and analysis, network protocol design and optimization, and network simulation, thus keeping pace with the fast moving VANET research and development.
Studies to Combat COVID-19 using Science and Engineering
by Dana Barry Hideyuki KanematsuThis unique book provides excellent examples of ongoing, leading-edge research related to viruses, especially COVID-19. It is written from the viewpoint of various scientific fields including materials science. It introduces and describes viruses (submicroscopic infectious agents that replicate inside the living cells of an organism), various infections caused by viruses (human to human, human to other organisms to humans, humans to materials to humans, etc.), not only from the viewpoint of medical research but also from other scientific disciplines. A major focus of the book is the COVID-19 virus. Highlighted topics include the evolution of COVID-19, transmission of virus particles through the air, virus spread through various materials, detection of the virus by testing wastewater, the development and testing of vaccines and therapeutic drugs, and the preparation for future viruses and pandemics. This includes reform in funeral services to properly and safely accommodate very large numbers of bodies in a pandemic, like those seen in New York City when it was the epicenter for the virus in the United States. This book serves as an excellent and very informative guide (practical book) for engineers and researchers of various backgrounds and as a great academic textbook.
Study Guide for Alive and Well at the End of the Day: The Supervisor's Guide to Managing Safety in Operations, Second Edition
by Paul D. BalmertSTUDY GUIDE FOR Alive and Well at the End of the Day Teaching aid underscoring the principles of effective safety leadership The Second Edition of Alive and Well at the End of the Day provides industrial leaders in operations with practical solutions to the tough safety leadership challenges they must manage. The book describes in detail the nature of those challenges (what makes them that tough) and offers proven best practices to successfully deal with them. The Study Guide is designed as a teaching aid for the Alive and Well book. Created by the highly experienced training specialists of Balmert Consulting, the Study Guide uses training best practices to help affix the concepts of Alive and Well in the minds of professional students. The use of strategically-crafted questions—both at the beginning and end of each review session—allows the student to work with the material conceptually, becoming more familiar and facile with it. Alive and Well is designed to teach front-line supervisors of workers in a wide range of industries how to help and guide their employees to understand the risks involved in the various aspects of their work, and how to cope with those risks and to plan and execute their jobs in ways that can help eliminate injuries. The topic of the Study Guide is the content of the book; its purpose is to help both supervisors and those reporting to them to more sharply focus on the principles in the book; to more fully understand and remember them; and to be able to apply them in everyday work situations.
A Study into the Design of Steerable Microphone Arrays (SpringerBriefs in Electrical and Computer Engineering)
by Chiong Ching Lai Sven Erik Nordholm Yee Hong LeungThe book covers the design formulations for broadband beamformer targeting nearfield and farfield sources. The book content includes background information on the acoustic environment, including propagation medium, the array geometries, signal models and basic beamformer designs. Subsequently it introduces design formulation for nearfield, farfield and mixed nearfield-farfield beamformers and extends the design formulation into electronically steerable beamformers. In addition, a robust formulation is introduced for all the designs mentioned.
Study of Ecological Engineering of Human Settlements
by Jianfeng ZhangThis book analyzes the theory of ecological engineering of human settlements and provides case studies on the improvement of degraded lands and vegetation restoration, especially focusing on saline-alkali land, abandoned land, water source areas, and the impact of green belts on noise and air quality on the highways. In addition, it discusses the issue of biodiversity conservation strategies in rural landscape construction and demonstrates experiment measurement and field survey methods. The results obtained are supplemented by numerical calculations, presented in the form of tables and figures.As the first monograph on this subject, the book provides a wealth of ideas and resources for researchers, professionals and practitioners in the field of human settlements.
Study of Excess Electronic Recoil Events in XENON1T (Springer Theses)
by Evan ShockleyThis thesis summarizes the original analysis work performed by the author on data from XENON1T, a search for dark matter with a ton-size noble liquid detector operated at Gran Sasso Underground Laboratory in Italy. The nature of dark matter is one of the most open and pressing questions of modern physics, and the unique data acquired with this detector allows the exploration and investigation of several potential scenarios. The analysis of Dr. Shockley searches for a class of elusive elementary particles that interact with the electrons of ordinary atoms, instead of the nucleus. Results of the analysis present, with high confidence, an excess with respect to the expected background. Beyond more mundane explanations, this additional rate of electron-mediated interactions might be a first hint of physics beyond the standard model. This accessible thesis provides details on the detector, the data, and the theory, delivering to the reader an in-depth and coherent picture of the search for physics beyond the standard model.
Study of Movement Speeds Down Stairs
by James A. Milke Bryan L. HoskinsThe Study of Movement Speeds Down Stairs closely examines forty-three unique case studies on movement patterns down stairwells. These studies include observations made during evacuation drills, others made during normal usage, interviews with people after fire evacuations, recommendations made from compiled studies, and detailed results from laboratory studies. The methodology used in each study for calculating density and movement speed, when known, are also presented, and this book identifies an additional seventeen variables linked to altering movement speeds. The Study of Movement Speeds Down Stairs is intended for researchers as a reference guide for evaluating pedestrian evacuation dynamics down stairwells. Practitioners working in a related field may also find this book invaluable.
Study of New Ternary Rare-Earth Intermetallic Germanides with Polar Covalent Bonding: Beyond the Zintl Picture (Springer Theses)
by Riccardo FrecceroThe thesis focuses on the syntheses, structural characterizations and chemical bonding analyses for several ternary R–M–Ge (R = rare earth metal; M = another metal) intermetallics. The challenges in understanding the main interactions governing the chemistry of these compounds, which lead to our inability to predict their formation, structure and properties, are what provided the motivation for this study. In particular, the R2MGe6 (M = Li, Mg, Al, Cu, Zn, Pd, Ag), R4MGe10-x (M = Li, Mg), R2Pd3Ge5, Lu5Pd4Ge8, Lu3Pd4Ge4 and Yb2PdGe3 phases were synthesized and structurally characterized. Much effort was put into the stabilization of metastable phases, employing the innovative metal flux method, and into the accurate structure solution of twinned crystals. Cutting-edge position-space chemical bonding techniques were combined with new methodologies conceived to correctly describe the Ge–M, Ge–La and also La–M polar-covalent interactions for the La2MGe6 (M = Li, Mg, Al, Cu, Zn, Pd, Ag) series. The present results constitute a step forward in our comprehension of ternary germanide chemistry as well as providing a good playground for further investigations.
Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis (Springer Theses)
by Boyang ShenThis thesis introduces a systematic study on Second Generation (2G) High Temperature Superconductors (HTS), covering a novel design of an advanced medical imaging device using HTS, and an in-depth investigation on the losses of HTS.The text covers the design and simulation of a superconducting Lorentz Force Electrical Impedance Tomography. This is potentially a significant medical device that is more efficient and compact than an MRI, and is capable of detecting early cancer, as well as other pathologies such stroke and internal haemorrhages. It also presents the information regarding the fundamental physics of superconductivity, concentrating on the AC losses in superconducting coils and tapes.Overall, the thesis signifies an important contribution to the investigation of High Temperature Superconductors. This thesis will be beneficial to the development of advanced superconducting applications in healthcare as well as more broadly in electrical and energy systems.
A Study of Ship Manoeuvrability
by R. P. GokarnThis book presents various aspects of Ship Manoeuvrability in a form that can be understood without undue effort. Beginning with the equations of motion, the book describes the main manoeuvring mathematical models with their application in the numerical simulation of various manoeuvres. The other topics covered in the book range from manoeuvring model tests and full-scale trials through rudder hydrodynamics and design to manoeuvring standards and guidelines. This book also discusses ship autopilots and dynamic positioning. Finally, it provides a description of unconventional rudders and propulsion devices used for manoeuvring. The book has more than 180 figures to explain various concepts and 40 exercises with partial solutions to confirm that the reader has understood the subject. The book also includes recent developments in the subject and can be a valuable reference for beginners, researchers, and professionals interested in the field.
A Study of the Fukushima Daiichi Nuclear Accident Process: What caused the core melt and hydrogen explosion?
by Michio IshikawaWritten by an expert in the field, this book is perfect for those who would like to know what happened at the Fukushima Daiichi Nuclear Power Plant. Part 1 of the book studies how core melts occurred in Fukushima Daiichi units 1, 2, and 3, respectively, based on evidence from the Three-Mile Island core melt accident and fuel behavior experiments performed in the 1970s under the cooperation between the United States, Germany, and Japan. This information explains the accident processes without contradicting data from Fukushima, which was published in the TEPCO report. The hydrogen explosions in units 1, 3, and 4 are also explained logically in conjunction with the above core melt process. Part 2 clarifies how the background radiation level of the site doubled: The first rise was just a leak from small openings in units 1 and 3 associated with fire-pump connection work. The second rise led to direct radioactive material release from unit 2. Evacuation dose adequacy and its timing are discussed with reference to the accident process, and the necessity for embankments surrounding nuclear power plants to increase protection against natural disasters is also discussed. New proposals for safety design and emergency preparedness are suggested based on lessons learned from the accident as well as from new experiences. Finally, a concept for decommissioning the Fukushima site and a recovery plan are introduced.
A Study on Antimicrobial Effects of Nanosilver for Drinking Water Disinfection (Springer Theses)
by Xu YangThis thesis examines the feasibility of using silver nanoparticles (AgNPs) as a viable disinfectant. It explores the opportunities and challenges of using AgNPs as an antimicrobial agent, and includes the latest research findings. It compares three kinds of AgNPs with regard to their antibacterial and antiviral effects; their sustainability in real water matrices; and their antiviral mechanisms. The outcome of this research equips the water industry with a better understanding of the capacity, extent and mechanisms of nanosilver disinfection. It is of interest to graduate students, academics and researchers in the area of nanotechnology and environmental engineering.
A Study on Catalytic Conversion of Non-Food Biomass into Chemicals: Fusion of Chemical Sciences and Engineering (Springer Theses)
by Mizuho YabushitaThe topic of this thesis is catalytic conversion ofnon-food, abundant, and renewable biomass such as cellulose and chitin tochemicals. In biorefinery, chemical transformation of polymers to valuablecompounds has attracted worldwide interest for building sustainable societies. First, the current situation of this hot research area has been summarized wellin the general introduction of the thesis, which helps readers to becomefamiliar with this topic. Next, the author explains high-yielding production ofglucose from cellulose by using an alkali-activated carbon as a catalyst,resulting in a yield of glucose as high as 88%, which is one of the highestyields ever reported. The characterization of carbon materials has indicatedthat weak acid sites on the catalyst promote the reaction, which is markedlydifferent from reported catalytic systems that require strong acids. Inaddition, the first catalytic transformation of chitin with retention of N-acetyl groups has been developed. Thecombination of mechanocatalytic hydrolysis and thermal solvolysis enables theproduction of N-acetylated monomers ingood yields of up to 70%. The catalytic systems demonstrated in this thesis areunique in the fields of both chemistry and chemical engineering, and their highefficiencies can contribute to green and sustainable chemistry in the future. Meanwhile, mechanistic studies based on characterization, thermodynamics,kinetics, and model reactions have also been performed to reveal the roles ofcatalysts during the reactions. The results will be helpful for readers todesign and develop new catalysts and reaction systems.
Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR
by Jian YangBased on a detailed analysis of the signal model of the moving target, this thesis focuses on the theories and applications of ground moving target indicator (GMTI) and ground moving target imaging (GMTIm) algorithms in synthetic aperture radar/ ground moving target indicator (SAR/GMTI mode), wide-area surveillance ground moving target indication (WAS-GMTI) mode and frequency modulated continuous wave synthetic aperture radar (FMCW SAR) systems. The proposed algorithms can not only indicate and image fast-moving targets, but are also effective in the context of slow-moving target processing. The system design scheme combines the mechanical scanning mode and the airborne SAR system, while the azimuth moving target indication algorithm employs the additional range walk migration induced by FMCW SAR systems. In addition, the non-ideal errors that deteriorate the performance of GMTIm algorithms in real SAR data processing are discussed, and suitable compensation methods are provided.
Study on Heterotrophic-Autotrophic Denitrification Permeable Reactive Barriers (HAD PRBs) for In Situ Groundwater Remediation
by Fei Liu Huade Guan Lingling Zhu Hongyan Hu Guoxin Huang Howard Fallowfield"Heterotrophic-Autotrophic Denitrification Permeable Reactive Barriers (HAD PRBs) for Groundwater in Situ Remediation" is an unmatched reference work on PRBs for groundwater in situ remediation. It proposes a novel HAD PRB approach for nitrate-contaminated groundwater remediation, and provides a systematic and clear explanation of design concepts and denitrification mechanisms. The book consists of four chapters, each of which covers key aspects of HAD PRBs. It provides rich, easy-to-follow illustrations, tables and references. Unique as a comprehensive reference work on the subject, it will serve as a valuable resource for all engineers and scientists active in environmental science and engineering, groundwater science, engineering and molecular biology. Prof. Fei Liu works at China University of Geosciences (Beijing), China. Dr. Guoxin Huang works at Beijing Academy of Food Sciences, China. Both Prof. Howard Fallowfield and Prof. Huade Guan work at Flinders University, Australia. Assistant Engineer Lingling Zhu works at Geological Publishing House, China. Assistant Engineer Hongyan Hu works at Hydrogeology and Engineering Geology Prospecting Institute of Heilongjiang Province, China.
Study on Microextrusion-based 3D Bioprinting and Bioink Crosslinking Mechanisms (Springer Theses)
by Liliang OuyangThis book presents a comprehensive study on microextrusion-based 3D bioprinting technologies for bioinks with various crosslinking mechanisms, chiefly focusing on the bioprinting process and bioink properties to provide readers with a better understanding of this state-of-the-art technology. Further, it summarizes a number of general criteria and research routes for microextrusion-based 3D bioprinting using three experimental studies based on shear-thinning, thermo-sensitive and non-viscous hydrogel bioinks. The book also presents sample applications in the areas of stem cells and cell matrix interaction. The book highlights pioneering results in the development of bioprinting technologies and bioinks, which were published in high-quality journals such as Advanced Materials, Biofabrication and ACS Biomaterials Science & Engineering. These include an in-situ crosslinking strategy that overcomes the viscosity limits for bioinks, which is virtually impossible using conventional strategies, and can be generalized for other bioink formulations.
A Study on Radio Access Technology Selection Algorithms (SpringerBriefs in Electrical and Computer Engineering)
by Leijia Wu Kumbesan SandrasegaranThis book discusses the basic idea of Common Radio Resource Management (CRRM), especially on the Radio Access Technologies selection part of CRRM. It introduces two interaction functions (information reporting function and RRM decision support function) and four interaction degrees (from low to very high) of CRRM. Four possible CRRM topologies (CRRM server, integrated CRRM, Hierarchical CRRM, and CRRM in user terminals) are described. The book presents different Radio Access Technologies selection algorithms, including single criterion and multiple criteria based algorithms are presented and compares them. Finally, the book analyses the advantages and disadvantages of the different selection algorithms.
Study on Signal Detection and Recovery Methods with Joint Sparsity (Springer Theses)
by Xueqian WangThe task of signal detection is deciding whether signals of interest exist by using their observed data. Furthermore, signals are reconstructed or their key parameters are estimated from the observations in the task of signal recovery. Sparsity is a natural characteristic of most of signals in practice. The fact that multiple sparse signals share the common locations of dominant coefficients is called by joint sparsity. In the context of signal processing, joint sparsity model results in higher performance of signal detection and recovery. This book focuses on the task of detecting and reconstructing signals with joint sparsity. The main contents include key methods for detection of joint sparse signals and their corresponding theoretical performance analysis, and methods for joint sparse signal recovery and their application in the context of radar imaging.
A Study on Spin Mechanics Phenomena in Spin-Lattice Coupled Systems (Springer Theses)
by Hiroki ArisawaThis book presents an experimental investigation of spin-mechanical phenomena in spin-lattice coupled systems. The author demonstrates that the resonant mechanical vibration of a micro magnetic mechanical oscillator changes in response to the magnetization process in the oscillator. The author also investigates a spin-current-induced volume modulation effect in a giant magnetostrictive material. The results presented here accelerate the exploration of cross-correlation effects between spintronics and micromechanics and provide insight into magnetomechanical properties associated with a spin current.
Study on the Optimal Allocation of Water Resources Systems and the Comprehensive Utilization of Water Resources in Arid-Semiarid Multiple Mining Areas
by Dong ShuningArid-semiarid regions have suffered from sharp conflicts among water resource utilization, mining, and the environmental protection. Sustainable development in these regions requires a close coordination between economy, society and the environment. Based on systematic hydrogeological investigations, laboratory and in-situ tests, and application of innovative methodologies including theoretical analysis modeling and prediction to study water resource distribution (including surface water, groundwater, mine water and coal mine domestic water) in mining areas, this dissertation provides detailed analysis of the current situation and trend of water uses in domestic supply, agriculture and industry. It evaluates the status development and utilization, evolution trend, exploitation and utilization potential of water resources in Shen-Dong Coal Mine area, one of China's extra-large coal bases. Incorporated with the long and intermediate terms' development strategies of this area, the dissertation lays out a scientific allocation scheme of water resources in different hydrological years and proposes a planning mode of water resources development and utilization and a technical scheme for comprehensive water resources utilization to provide technical supports for the optimal allocation, rational exploitation, comprehensive utilization and scientific management of water resources. This dissertation is one of the best in Chang'an University because of the volume of reliable data, defensible scientific analysis, and world significance of the research results.
Study on the Zero-Backlash Roller Enveloping Precision Reducer
by Xingqiao DengThis book aims to describe the basis meshing theory of roller enveloping worm gear and provides the new design and manufacturing method for solving the problem of backlash in gearing transmission. Also, it presents a new efficient numerical calculation means to predict the lubrication properties for two complex surface meshing in space. Our results provide a series of new viewpoints for design precision reducer.