Kã¼hne c (18 risultati)

Condizione: Good. Originele geà llustreerde hardcover, leeslint, geà llustreerde schutbladen, veel illustraties (waaronder foto's) in kleur en z/w, losse uitvouwbare kaart achterin, 4to.; Naam en datum op verso schutblad.

Hardcover. Condizione: Very Good. In zeer goede staat. Ongelezen. Hardcover met stofomslag. Inc. alle plaatjes.

Paperback. Condizione: New. Print on Demand. This book explores the chemical composition of the visual receptors within the retina, approaching the question through the lens of digestion experiments. The author builds upon groundbreaking work suggesting a substance within the retina is sensitive to light, and uses digestive chemistry to explore the nature of this substance within the context of broader digestive chemistry knowledge. The experiments described have led to the conclusion that the visual receptor can be destroyed by exposure to oxidizing agents, and that a combination of agents is necessary to destroy this receptor. This examination of the chemical nature of the visual receptor has implications for our understanding of the chemical nature of vision, and the early history and development of our understanding of sensory perception. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This captivating book unveils the fascinating inner workings of a suckling babe in its 39th week of life, providing profound insights into the enigmatic physiology of infancy. The author, a dedicated scholar, meticulously observed a young girl's intake of mixed nourishment and its subsequent consequences on her growth and development. The work masterfully situates this specific case study within the broader understanding of infant physiology, highlighting the unique nutritional needs and transformative processes occurring during this pivotal stage of life. Through meticulous analysis, the book explores the intricate relationship between nutrition, metabolism, and the infant's overall well-being. This groundbreaking study illuminates the complexities of infant physiology, offering invaluable knowledge for parents, pediatricians, and anyone seeking to comprehend the remarkable journey of human growth. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. Delving into the intricacies of biology, this book probes the relationship between blood speed and vascular structure, examining the groundbreaking work of Otto Frank, a renowned physiologist. Frank devised a novel method to measure blood velocity using a double catheter inserted into an artery, a technique that paved the way for significant advancements in cardiovascular research. The book offers a comprehensive historical perspective on the evolution of blood flow measurement techniques, highlighting Frank's pivotal contributions to the field. Through meticulous experimentation, Frank established a direct correlation between pressure and blood velocity, providing a foundation for understanding hemodynamics. This book not only chronicles Frank's groundbreaking research but also explores the broader implications of his findings, showcasing the transformative impact of scientific inquiry on our comprehension of physiological processes. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book explores the natural and artificial selection of fishes, detailing anatomical and physiological variations in fishes, with a particular focus on the evolution of the air-bladder into a breathing apparatus. The author shares insights into the development of the respiratory organs and explores the fascinating adaptations of fish species to their diverse aquatic environments. The book provides a comprehensive overview of the mechanisms and adaptations that have shaped the evolution of fish, offering a valuable resource for biologists and enthusiasts alike. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book delves into the debate on whether the central nervous system can be directly stimulated by external stimuli. The author examines historical perspectives on this subject, paying particular attention to the works of Van Deen, Fick, and Engelken. They present a series of experiments utilizing a unique unipole stimulation technique to investigate the excitability of the frog's medulla oblongata, specifically its anterior and posterior halves, as well as the gray and white matter. The experiments challenge established theories and provide new insights into the nature and localization of neural excitation. This book contributes significantly to the understanding of neural physiology and the ongoing scientific inquiry into the relationship between external stimuli and central nervous system responses. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. …

Paperback. Condizione: New. Print on Demand. This book delves into the effects of warmth and cold on blood vessels, exploring the history and science behind thermal effects on the body. The author examines how historical practitioners used temperature as a healing method, particularly in the form of baths. This book details experiments conducted to measure the effects of temperature changes on blood flow and vessel constriction. The author analyzes vessel reactions to extreme heat and cold as well as to constant temperatures over time, carefully distinguishing between direct and indirect stimulus on the vessels. This book is a valuable resource for students, scholars, and medical professionals researching the circulatory system, the history of medicine, or the effects of temperature on the body. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book explores the concept of harmony in vocal sounds. It builds on earlier research that demonstrated the absence of unharmonious tones in vocal sounds. The author sought to determine why the fundamental tone of the mouth cavity does not emerge in vocal sounds. The author conducted experiments using a reed organ pipe with attached resonators and observed that a sounding air lamella is incapable of exciting a resonator. The experiments also showed that the fundamental tone of a resonator is extinguished when an organ pipe is sounded. These findings provide empirical evidence for the conclusion that a sounding air lamella cannot excite a resonator. This book offers a unique perspective on the acoustics of vocal sounds and provides valuable insights into the mechanisms of speech production. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book delves into the science of how long it takes us to process complex visual information. The author conducted a series of experiments using different methods to measure the time it takes people to identify and understand images of varying complexity. The experiments focused on the time it takes to recognize numbers and how that time increases with the number of digits in the number. Results showed that identifying and understanding more complex images takes longer than identifying simple images, with the time difference between understanding single and multiple digit numbers being particularly noticeable. This increase in processing time for more complex images is due to the brain's need to process additional information and make more connections to understand what is being seen. These findings provide valuable insights into the fundamental processes of visual perception and help us to better understand how the brain works. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book, first published in 1896, offers a detailed chemical analysis of over 150 samples of breast milk taken from nearly 20 mothers across varying stages of the lactation period. The authors combine their research with a thorough survey of literature published up until the book's writing to give a comprehensive overview of knowledge on the topic. Going beyond simply recording data, they discuss how to interpret results, suggest potential sources of error, and identify areas where further research could be done. Particularly interesting is their study of 'extractive substances' which they isolated from the milk samples and which could not readily be categorized as proteins, fats, sugars, or ash. The authors' work sheds light on these substances, which would eventually be recognized as having significant biological roles. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book is a comprehensive exploration of the complex history of fever. It investigates the evolution of knowledge surrounding fever from ancient scientific beliefs to the present day. The author analyzes major figures and key concepts in the study of fever, exploring ideas like Rudolf Virchow's distinction between infectious and noninfectious fever. The book also examines the work of noted scientists such as Claude Bernard and Carl Ludwig, who made significant contributions to our understanding of fever and the human body's physiological response to it. Through its examination of historical texts, this book offers an invaluable resource for historians of science and students of medicine alike. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book is a thorough examination of motor nerve endings by a leading scientist. Its detailed account is placed within the context of scientific understanding from the mid-1800s to the present day. The author explores the multiple viewpoints of the scientific community, especially regarding the structure of motor nerve endings, and the book features first-hand images of specimens. The author's main argument is that the motor nerve ending is composed of axial trees and peripheral streams, countering the widely held belief that motor nerve endings consist solely of streams. The author provides extensive evidence from his own research to support his argument. Ultimately, this book is a valuable addition to the literature on motor nerve endings and will be of interest to anyone working in the field of neuroscience. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This engrossing book delves into the intricate coordination between the swallowing center and respiratory center in the brain, illuminating the complex interplay between these two physiological systems. The author thoroughly examines a range of studies and observations that have shaped our understanding of this fascinating subject, tracing the historical development of theories and discoveries. Central to the discussion is the phenomenon of 'swallowing breathing,' a unique type of respiratory movement triggered by the act of swallowing. The author meticulously analyzes the nature of this phenomenon, challenging prevailing assumptions and shedding new light on its physiological significance. The book's insights expand our comprehension of the intricate mechanisms that govern breathing and swallowing, highlighting their interdependence and the delicate balance maintained within the body's regulatory systems. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book examines the science of the chemical elements called "cystines". The author provides an overview of the historical research on cystines and shares their own analysis, including experiments and data that have led to the identification of four different albumoses. The analysis concludes that the four main albumoses, protalbumose, deuteroalbumose, heteroalbumose, and dysalbumose, are chemically similar but have diverse physical characteristics, as observed by their solubility in certain salt solutions and their behavior in the presence of acids and alkalis. In addition to their chemical characterization, the author notes their optical activity, which is to say their ability to rotate the plane of polarized light. This book's detailed scientific approach offers a deeper understanding of the composition and properties of cystines and contributes to the growing body of knowledge in this field. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book re-opens the question of whether peptones are impurities found in albumoses, or a distinct class of their own. The author sides with the latter, demonstrating that thoroughly purified peptones are free of albumose contaminants. The ability to eliminate all albumoses from peptone preparations was crucial, as earlier failures to do so led to the misconception that peptones were merely impure albumoses. This book not only provides a definitive answer to this question but also presents new methods for the preparation and purification of peptones, expanding our understanding of their chemical composition and physical properties. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condizione: New. Print on Demand. This book investigates the circulation of bile acids in humans and animals, a concept known as the enterohepatic circulation. In the 1800s, scientists believed that bile acids were synthesized and excreted by the liver and then eliminated via feces. However, the author presents various studies, including his own experiments, that challenge this simplistic view. His research demonstrates that a significant portion of bile acids are reabsorbed in the intestines, return to the liver via the blood or lymph, and then are re-secreted into the bile. This discovery reveals a complex and dynamic system for recycling bile acids, with important implications for understanding liver function and digestive health. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. …

Paperback. Condizione: New. Print on Demand. This book delves into the fascinating world of cell biology, exploring the intricate workings of the cell, the fundamental building block of all living organisms. The author takes a comprehensive approach, examining the historical development of cell theory, from its early beginnings to contemporary understandings. Through engaging prose, the book delves into core concepts such as cell structure, function, division, and genetics, providing a thorough foundation in cell biology. This book is perfect for students, biologists, and anyone interested in unraveling the mysteries of life at the cellular level, offering an invaluable resource for understanding the complexities of living systems and their boundless diversity. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…