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1.
This essay recounts a controversy between a pioneer electrophysiologist, Emil du Bois-Reymond (1818-1896), and his student, Ludimar Hermann (1838-1914). Du Bois-Reymond proposed a molecular explanation for the slight electrical currents that he detected in frog muscles and nerves. Hermann argued that du Bois-Reymond's 'resting currents' were an artifact of injury to living tissue. He contested du Bois-Reymond's molecular model, explaining his teacher's observations as electricity produced by chemical decomposition. History has painted Hermann as the wrong party in this dispute. I seek to set the record straight.  相似文献   

2.
The torpedo effect was known long before electricity was discovered. How was it explained? In early accounts on the subject, Emil du Bois-Reymond found remarkable observations and hypotheses. In Antiquity, zoological interest is illustrated by Aristotle and followers, who were intrigued by torpedo's behaviour and capacity to act from a distance. Alexandrian physicists were more interested in the propagation, as for light, of its effect in matter, conceived as either corpuscular or continuous. The theory of nervous action is linked to these conceptions and separated in various hypotheses among which that on qualitative alteration. However, the medical approach of toxicology takes over this debate and brings back torpedo's property in the frame of pathology.  相似文献   

3.
4.
At the first International Congress of Physiologists in Basel, Switzerland, the Italian physiologist Angelo Mosso (1846-1910) discussed his findings on muscular fatigue while demonstrating the functioning of an ergograph (work recorder). One hundred sixteen years later, Mosso's career, scientific accomplishments, and legacy in the study of muscular fatigue were commemorated at the 2005 International Congress of Physiological Sciences. After receiving his degree in Medicine and Surgery from Turin, Italy, in 1870, Mosso was able to study and interact with renowned physiologists as Wilhelm Ludwig, Du Bois-Reymond, Hugo Kronecker, and Etienne Marey. By 1879, he was Professor of Physiology at the University in Turin, where he conducted research pertaining to blood circulation, respiration, physical education, high-altitude physiology, and muscular fatigue. Using tracings from the ergograph (concentric contractions of the flexor muscles of the middle finger that were volitionally or electrically stimulated), he was able to characterize muscle fatigue and to associate its occurrence with central or peripheral influences. He demonstrated that exercise would increase muscular strength and endurance while prolonging the occurrence of fatigue, which he postulated was a chemical process that involved the production of toxic substances such as carbonic acid. The phenomenon of contracture was described, and his collective studies led to the formulation of laws pertaining to exhaustion and to the 1891 publication of La Fatica (Fatigue). Besides La Fatica, Mosso will be remembered as a scientist with a love for physiology, a concern for the social welfare of his countrymen, and as one who sought to integrate physiological, philosophical, and psychological concepts in his experimental studies.  相似文献   

5.
The first part of this paper was published in Rivista di Biologia/Biology Forum 94 (2001). In the second part below an examination is made of the meaning of the term Metaphysics in some passages of the Darwinian Notebooks for the years 1836-1844. Metaphysics no longer defines a field of philosophical enquiries mainly concerning the being and the essence after the manner of Aristotle; it now refers to a kind of philosophy of mind after the manner of J. Locke's criticism of the Hypokeimenon. However Aristotle's Metaphysics also encompasses a treatment of the idea of causes, and of final cause particularly, in the explanation of events, and in the explanation of natural phenomena especially. The criticism of the idea of final cause in the interpretation of the world of life is one of Darwin's foundational acts in his early years. When conceiving his Système du monde, in the last years of the XVIII Century, Laplace could think that God is a hypothesis not really needed by science, as we are told. For the knowledge of organic nature to attain the status of science, it remained to be shown that since--certain of the exemplariness of Newton's Principles as much as cautious before the mystery of life--did not need the hypothesis of final ends in order to understand and explain the productions of the living nature: not only in the form of that final cause (the First Cause, the Vera Causa) in which Natural Theology still rested, but also in the form of nature's inner finality which still moulded Whewell's Kantian philosophy. Such demonstration is a very important subject in Darwin's early enquiries, where he criticises finalism as a projection of self-conceiving Man, likely inherited from a knowing of causality in nuce to be found also in animals.  相似文献   

6.
Conventional wisdom teaches that Thomas Huxley discredited Richard Owen in their debate over ape and human brains. This paper reexamines the dispute and uses it as a test case for evaluating the metaphysical realist, internal realist, and social constructivist theories of scientific knowledge. Since Owen worked in the Kantian tradition, his anatomical research illustrates the implications of internal realism for scientific practice. As an avowed Cartesian, Huxley offered a well developed attack on Owen's position from a metaphysical realist perspective. Adrian Desmond's political retrospective on the dispute affords the additional opportunity to contrast internal realism with social constructivism. I argue that since Huxley ultimately based his attack on his valuing Europeans as superior to blacks, his argument illustrates the hazards of accepting the metaphysical realist promise of value free science. Desmond overlooks this racial dimension of the dispute, and his work shows how social constructivism can distract the historian and philosopher from even the social meaning of science. As internal realists like Putnam have argued, values enter science not from without, but from within the very process of science itself.  相似文献   

7.
Robert Chambers and Thomas Henry Huxley helped popularize science by writing for general interest publications when science was becoming increasingly professionalized. A non-professional, Chambers used his family-owned Chambers' Edinburgh Journal to report on scientific discoveries, giving his audience access to ideas that were only available to scientists who regularly attended professional meetings or read published transactions of such forums. He had no formal training in the sciences and little interest in advancing the professional status of scientists; his course of action was determined by his disability and interest in scientific phenomena. His skillful reporting enabled readers to learn how the ideas that flowed from scientific innovation affected their lives, and his series of article in the Journal presenting his rudimentary ideas on evolution, served as a prelude to his important popular work, Vestiges of the Natural History of Creation. Huxley, an example of the new professional class of scientists, defended science and evolution from attacks by religious spokesmen and other opponents of evolution, informing the British public about science through his lectures and articles in such publications as Nineteenth Century. He understood that by popularizing scientific information, he could effectively challenge the old Tory establishment -- with its orthodox religious and political views -- and promote the ideas of the new class of professional scientists. In attempting to transform British society, he frequently came in conflict with theologians and others on issues in which science and religion seemed to contradict each other but refused to discuss matters of science with non-professionals like Chambers, whose popular writing struck a more resonant chord with working class readers. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

8.
One of the principal difficulties in assessing Science as aProcess (Hull 1988) is determining the relationship between the various elements of Hull's theory. In particular, it is hard to understand precisely how conceptual selection is related to Hull's account of the social dynamics of science. This essay aims to clarify the relation between these aspects of his theory by examining his discussion of the``demic structure' of science. I conclude that the social account cando significant explanatory work independently of the selectionistaccount. Further, I maintain that Hull's treatment of the demicstructure of science points us toward an important set of issues insocial epistemology. If my reading of Science as a Process iscorrect, then most of Hull's critics (e.g., those who focus solelyon his account of conceptual selection) have ignored promisingaspects of his theory.  相似文献   

9.
Chronobiology: a frontier in biology and medicine   总被引:1,自引:0,他引:1  
On the occasion of Franz Halberg's 70th birthday, some of his many achievements are reviewed. We provide a historical background to the development of chronobiology; offer insight into the current state of this new science; and sketch the promise of this discipline for health care and cure. As a tribute to Franz Halberg, in an era of fast-growing technology, an attempt is made to describe his perspective of tomorrow's medicine and biology. The many students he trained throughout his productive career face the challenge of deserving the trust he placed in them and of further implementing his vision. A leader in social pediatrics put it aptly: it will take several generations of researchers to study and master his life's work.  相似文献   

10.
This paper has been written in honor of John T. Edsall. Its purpose is to review briefly the status of science during his active years and the combination of personal qualities and upbringing which resulted in his enormous impact on the field of biochemistry. There was an unusual combination of deep knowledge and interest in many intellectual areas by no means restricted to science; the large number of individuals he met by intent or by chance, many to become fast friends for life, who themselves became distinguished in science; and last but not least his influence on science policy through very clear statements and his moral positions on questions of the day.  相似文献   

11.
Alexander von Humboldt was arguably the most influential scientist of his day. Although his fame has since lessened relative to some of his contemporaries, we argue that his influence remains strong—mainly because his approach to science inspired others and was instrumental in furthering other scientific disciplines (such as evolution, through Darwin, and conservation science, through Muir)—and that he changed the way that large areas of science are done and communicated. Indeed, he has been called the father of a range of fields, including environmental science, earth system science, plant geography, ecology and conservation. His approach was characterized by making connections between non‐living and living nature (including humans), based on interdisciplinary thinking and informed by large amounts of data from systematic, accurate measurements in a geographical framework. Although his approach largely lacked an evolutionary perspective, he was fundamental to creating the circumstances for Darwin and Wallace to advance evolutionary science. He devoted considerable effort illustrating, communicating and popularizing science, centred on the excitement of pure science. In biogeography, his influence remains strong, including in relating climate to species distributions (e.g. biomes and latitudinal and elevational gradients) and in the use of remote sensing and species distribution modelling in macroecology. However, some key aspects of his approach have faded, particularly as science fragmented into specific disciplines and became more reductionist. We argue that asking questions in a more Humboldtian way is important for addressing current global challenges. This is well‐exemplified by researching links between geodiversity and biodiversity. Progress on this can be made by (a) systematic data collection to improve our knowledge of biodiversity and geodiversity around the world; (b) improving our understanding of the linkages between biodiversity and geodiversity; and (c) developing our understanding of the interactions of geological, biological, ecological, environmental and evolutionary processes in biogeography.  相似文献   

12.
Values-led conservation   总被引:1,自引:0,他引:1  
In international nature conservation policy, value‐arguments based on science and economic rationalism increasingly overshadow the aesthetic and ethical arguments that originally inspired the conservation movement. We argue that this trend risks removing conservation from the public realm, in part because it facilitates the adoption by nongovernment conservation bodies of corporate values and/or their integration with government bureaucracies. By contrast, the explicit recognition of aesthetic and ethical values would complement arguments based on science and economic utility. We subscribe to a reformist view of globalization that accepts the inevitability of a globalizing world but argues that the process needs humanizing by incorporating quality of life values in the policy process. We argue that re‐emphasis of aesthetic and ethical arguments in international conservation policy would contribute to this goal by reasserting links between conservation bodies and the public, thereby leading to more effective action on the ground.  相似文献   

13.
The life of Joseph Dalton Hooker (1817–1911) provides an invaluable lens through which to view mid-Victorian science. A biographical approach makes it clear that some well-established narratives about this period need revising. For example, Hooker’s career cannot be considered an example of the professionalisation of the sciences, given the doubtful respectability of being paid to do science and his reliance on unpaid collectors with pretensions to equal scientific and/or social status. Nor was Hooker’s response to Darwin’s theories either straightforward or contradictory; it only makes sense as carefully crafted equivocation when seen in the context of his life and career. However, the importance of Hooker’s life is ultimately its typicality; what was true of Hooker was true of many other Victorian men of science.  相似文献   

14.
During the 1840s and the 1850s botanist Joseph Hooker developeddistinct notions about the proper characteristics of aprofessional man of science. While he never articulated theseideas publicly as a coherent agenda, he did share his opinionsopenly in letters to family and colleagues; this privatecommunication gives essential insight into his and his X-Clubcolleagues' public activities. The core aspiration of Hooker'sprofessionalization was to consolidate men of science into adutiful and centralized community dedicated to nationalwell-being. The nation in turn owed the scientific community forits ministration. When the government bestowed funds and statuson men of science it was rewarding science – not purchasing it. His proposed reforms were piecemeal, immediate, and above allpractical. He harbored no taste for vast millenariantransformation, and rested his conception of scientificprofessionalism upon a respectable High Victorian foundation ofpatronage and pillars of duty, reciprocity, intimacy, andinequality. The process of professionalization he envisioned wasas much shrewd compromise between existing interests as avindication of principle. His power and prestige from themid-1850s onward gave him considerable ability to carry out hisreform program, although his general success did occasion someundesired consequences for the status of natural-historypursuits. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

15.
Recent discussions and proposed rules and regulations regarding outpatient surgery facilities have raised the question of the appropriateness of general anesthesia versus heavy sedation. The controversy is based mostly on anecdotal information and the prejudice of the authors. A recent article that describes the improved platelet function induced by ketamine adds patient safety to the rationale for sedation. Most of us have trained in university settings where an entire department was devoted to general anesthesia and little true outpatient surgery was performed. When ambulatory facilities were available, they were usually staffed by anesthesiologists. Indeed, the first free-standing outpatient surgery center in Phoenix, Arizona, was owned and operated by a local group of anesthesiologists. Properly administered, diazepam and ketamine dissociative sedation is safe and effective for every aesthetic procedure, regardless of size or duration, and it should be available for all aesthetic surgeons. In the author's experience, more than 30,000 procedures have been performed with this method since 1966 without a single case of deep vein thrombosis or pulmonary embolus. In contrast, a former associate, because of his lack of experience, chose to use general anesthesia for a few larger cases in another facility. One of those cases, an abdominoplasty, resulted in a serious case of deep vein thrombosis with subsequent alleged disability and litigation. Therefore, the author is writing to share his extensive experience with his colleagues in hopes that these safe systems will become more widespread and to spare future patients the attendant unnecessary increased morbidity and mortality associated with general anesthesia.  相似文献   

16.
17.
This abstract is a prologue to this paper. Prior to his health failing, Martin Gibbs began writing remembrances of his education and beginning a science career, particularly on the peaceful uses of nuclear radiation, at the U.S. Brookhaven National Laboratory (BNL), Camp Upton, NY. Two years before his death Martin provided one of us (Govindjee) a draft text narrating his science beginnings in anticipation of publication in Photosynthesis Research. Govindjee edited his draft and returned it to him. Later, when it became difficult for him to complete it, he phoned Govindjee and expressed the desire that Govindjee publish this story, provided he kept it close to his original. Certain parts of Martin’s narrations have appeared without references (Gibbs 1999). The Gibbs family made a similar request since the narrations contained numerous early personal accounts. Clanton Black recently presented an elegant tribute on Martin Gibbs and his entire science career (Black 2008). Clanton was given the draft, which he and Govindjee then agreed to finish. This chronicle is their effort to place Gibbs’s narrations about his education and his maturation scientifically, in context with the beginnings of biological chemistry work with carbon-14 at the BNL (see Gibbs 1999). Further, these events are placed in context with those times of newly discovered radioisotopes which became available as part of the intensive nuclear research of World War II (WW II). Carbon-14, discovered during WW II nuclear research in 1940, was extremely useful and quickly led to the rapid discovery of new carbon metabolism pathways and biochemical cycles, e.g., photosynthetic carbon assimilation, within a decade after WW II.
GovindjeeEmail:
  相似文献   

18.
An appetizing smell of beetroot soup came wafting from the kitchen, with it the rhythmic sound of chopping... Ye Zhiqiu ... was in a mood to play some prank out of keeping with her age... So she tried to repress her elation, to behave like a middle-aged Chinese woman. Perhaps she didn't try hard enough, for a little of it came bubbling out as she called in her rusty French, “Qu'est-ce qu'on mange au dejeuner?” Mo Zheng promptly called back from the kitchen, “De la soupe au potiron, de saucisson et du pain.” Good lad, he hadn't forgotten his French. That came of his upbringing in a cultured family.1  相似文献   

19.
In this paper I characterize science in terms of both invisible hand social organization and selection. These two processes are responsible for different features of science. Individuals working in isolation cannot produce much in the way of the warranted knowledge. Individual biases severely limit how much secure knowledge an individual can generate on his or her own. Individuals working in consort are required, but social groups can be organized in many different ways. The key feature of the social organization in science is that only working scientists can confer the most important reward in science--use--and scientists must use each other's work in order to succeed in realizing this goal. An analysis of science as a selection process serves quite a different function. Individual scientists strive to come up with novel solutions to significant problems. The question then becomes how to be creative. From a selective perspective, science as a process involves the production of numerous alternatives and a selection among them. A single scientist solving an important problem makes science look very efficient. Treating science as a selection process casts it in a very different light. In this paper I combine an invisible hand mechanism with a selective perspective in order to explain why science is as successful as it is. I do not make recourse to evolutionary epistemology in any of its traditional senses.  相似文献   

20.
Conclusion It should be clear by now the extent to which many features of Thorpe's interpretation of animal behavior and of the animal mind rested, at bottom, not simply on conventional scientific proofs but on interpretive inferences, which in turn rested on a willingress to make extensions of human experience to animals. This, in turn, rested on his view of evolution and his view of reality. And these were governed by his natural theology, which was the fundamental stratum of his intellectual experience.Contrary to the scientific ethos, which restricts theory choice to scientific issues alone, Thorpe's career suggests that the actual reasons for theory choice among scientists often are not limited to science, but are multiple and may sometimes be difficult to discover. It is largely because Thorpe took a public part in the natural theology enterprise that we can know something about his religious beliefs and so can see their probable influence on his scientific decisions. Similar beliefs of other scientists are sometimes harder to get at. Most may be practically beyond discovery, for the ethos of science has discouraged public professions of personal belief in relation to scientific work.101 Yet does it seem plausible that, for example, the restriction of self-consciousness to humans by some scientists is a purely scientific decision?102 Surely not, any more than that the strong influence of natural theology on Thorpe's thought means that he was not a good scientist. His natural theology may have led him into incautious enthusiasms regarding the animal mind — such as the potential if unrealizable linguistic ability of chimpanzees — through a bias in favor of the continuity of emergents in a progressive evolutionary system, just as it led him to advocate animal consciousness long before the recent upsurge of interest, but the scientific integrity of his work overall is unimpeachable. And yet, that work is not comprehensible historically as science alone. Personal philosophy must not be discounted in writing the history of recent science. This somewhat obvious conclusion (obvious to historians of science) needs emphasis, for we are still prone to think that the sciences of our own time provide their own internal dynamic that is in itself sufficient to account for their content and development.  相似文献   

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