Search

This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2022. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.

Bachelor Thesis from the year 2019 in the subject Chemistry - Organic Chemistry, grade: 4.0 = A, University of Cape Coast, language: English, abstract: Dichapetalum madagascariense. Poir belongs to the family Dichapetalacease. In this present study, the antibacterial activity of the ethyl acetate extract of the root was investigated by soxhlet extraction process. Agar well diffusion method was employed to evaluate antibacterial activity of extracts against Gram positive and Gram negative bacteria. The root extract was effective in causing inhibition of some of the test bacteria. The highest and least inhibitory activities were observed against Staphylococcus aureus and Pseudomonas aeruginosa respectively, while Escherichia coli was resistant. The extract was more effective in inhibiting the growth of Staphylococcus aureus as compared to the standard antibiotic used as a positive control. The solvent for extraction, ethyl acetate, did not affect the biological activity of the crude extract.

Bacterial infections have become more difficult, and sometimes impossible, to treat due to antibiotic resistance, which occurs when bacteria develop the ability to defeat the available drugs designed to kill them. According to the Centers for Disease Control and Prevention, each year, 2 million Americans become sick with antibiotic-resistant infections, and of that, about 23,000 die. This book examines the challenges related to antibiotic resistance, the development and use of diagnostic testing to identify antibiotic resistance, the development of treatments for resistant infections, and appropriate antibiotic use.

Every two years, industry leaders and practitioners from around the world gather at the Rapid Excavation and Tunneling Conference (RETC), the authoritative program for the tunneling profession, to learn about the most recent advances and breakthroughs in this unique field. The information presented helps professionals keep pace with the ever-changing and growing tunneling industry. This book includes the full text of 106 papers presented at the 2021 conference. Though the tunneling industry continues to develop both technically and contractually, one notable adaptation of the last two years has been the onset and management of COVID-19. The hallmarks of tunneling professionals include adaptability, resiliency, optimism, and management of change. These are traits that have been recently put to an entirely new challenge over the last year or so. We have truly witnessed why what we do is deemed “essential” infrastructure. The COVID-19 pandemic has impacted each of us, personally and professionally, and while times have been hard, we are fortunate to work in a field that is able to meet the challenge and thrive thereafter. Congratulations are in order to everyone in our industry for keeping the planning and development of projects moving forward and for maintaining safe and productive worksites in these challenging times.

Manual of Clinical Microbiology Twelfth Edition Revised by a collaborative, international, interdisciplinary team of editors and authors, this edition includes the latest applications of genomics and proteomics and is filled with current findings regarding infectious agents, leading-edge diagnostic methods, laboratory practices, and safety guidelines. This edition also features three new chapters on accreditation, Mycobacterium tuberculosis complex, and human herpesvirus 8. This seminal reference of microbiology continues to set the standard for state-of-the-science laboratory practice as the most authoritative reference in the field of microbiology.

Revised by a collaborative, international, interdisciplinary team of editors and authors, this edition includes the latest applications of genomics and proteomics and is filled with current findings regarding infectious agents, leading-edge diagnostic methods, laboratory practices, and safety guidelines. This seminal reference of microbiology continues to set the standard for state-of-the-science laboratory practice as the most authoritative reference in the field of microbiology.

We tend to see history and evolution springing from separate roots, one grounded in the human world and the other in the natural world. Human beings have, however, become probably the most powerful species shaping evolution today, and human-caused evolution in other species has probably been the most important force shaping human history. This book introduces readers to evolutionary history, a new field that unites history and biology to create a fuller understanding of the past than either can produce on its own. Evolutionary history can stimulate surprising new hypotheses for any field of history and evolutionary biology. How many art historians would have guessed that sculpture encouraged the evolution of tuskless elephants? How many biologists would have predicted that human poverty would accelerate animal evolution? How many military historians would have suspected that plant evolution would convert a counter-insurgency strategy into a rebel subsidy? With examples from around the globe, this book will help readers see the broadest patterns of history and the details of their own life in a new light.

So you think modern medicine has the whole virus game figured out? Think again. And it's not even a question of'if'we'll be hit by some new and deadly diseaseýit's'when.'The war on germs is being fought on many frontsýfrom the skirmishes with disease-carrying mosquitoes that cross oceans hidden away in airline wheel wells to the high-profile battle against terrorists wielding deadly bioweapons. Today's bold headlines would have us believe that the biggest threat comes from bioterrorism. But don't underestimate Mother Nature, perhaps the most savage bioterrorist of all. Assisted by the increasing ease with which peopleýand the germs they carryýmove across international borders, she's an effective force to be reckoned with, a key player on this battlefield. As author Madeline Drexler makes clear, we'd do best not to ignore her.Human beings and the pathogens that attack them are crossing paths more and more frequently, particularly as modern life grows increasingly complex. Whatever the infectious agent may be, whether it's pandemic flu, foodborne illness, a debilitating disease carried far and wide by biting insects, or some new microbial horror we have yet to detect, keen surveillance and rapid response are really the only weapons in our arsenal.Secret Agentslooks at today's new and emerging infectionsýthose that have increased in attack rate or geographic range, or threaten to do soýand tells the stories of scientists racing to catch up with invisible adversaries superior in both speed and guile. Each chapter focuses on a different threat: foodborne pathogens, antibiotic resistance, animals and insectborne diseases, pandemic influenza, infectious causes of chronic disease, and bioterrorism, including the latest information on the public health threats posed by anthrax and diseases such as smallpox.Based in part on material collected from the Forum on Emerging Infections hosted by the Institute of Medicine in Washington, D.C., Secret Agents is ultimately as engaging as it is disturbing. Drexler's thorough survey of the field of infectious disease, supplemented by extensive interviews with today's top researchers, yields a compelling portrait of a world engaged in a clandestine war.Emerging infections are among the many secret ties that bind the world into an organic whole. We know that infectious disease is an inescapable part of life, but we need to begin thinking globally and acting locally if we are to avoid the menace of a catastrophic outbreak of some new plague. Secret Agentssounds a clear and compelling call to take up arms against the organic predators among us.

The Direct Detection of Microorganisms in Clinical Samples focuses on the most practical and widely used procedures for direct detection of microorganism in clinical specimens. It considers application to virology, mycology, and bacteriology. Organized into three parts, the book begins with established techniques for visualization of intact organism in clinical samples. The book then deals with immunologic techniques for detecting soluble microbial antigens. The last part considers diverse non-immunologic methods for detecting soluble constituents of organisms and their metabolites. Clinical microbiologists, infectious disease clinicians and researchers, and individuals working in analogous areas will find this book invaluable.

Why does tuberculosis, a disease which is both curable and preventable, continue to produce over 50,000 new cases a year in South Africa, primarily among blacks? In answering this question Randall Packard traces the history of one of the most devastating diseases in twentieth-century Africa, against the background of the changing political and economic forces that have shaped South African society from the end of the nineteenth century to the present. These forces have generated a growing backlog of disease among black workers and their families and at the same time have prevented the development of effective public health measures for controlling it. Packard's rich and nuanced analysis is a significant contribution to the growing body of literature on South Africa's social history as well as to the history of medicine and the political economy of health.