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1. |
Record Nr. |
UNINA9910709975403321 |
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Autore |
Matthai Howard Frederick <1913-> |
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Titolo |
Water resources of the San Francisco Bay area, California / / by H.F. Matthai [and three others] |
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Pubbl/distr/stampa |
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Washington, D.C. : , : United States Department of the Interior, Geological Survey, , 1957 |
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Descrizione fisica |
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1 online resource (v, 55 pages) : illustrations, maps + + 5 plates |
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Collana |
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Geological Survey Circular ; ; 378 |
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Soggetti |
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Water-supply - California - San Francisco Bay Area |
Water-supply |
California San Francisco Bay Area |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references (pages 44-45). |
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2. |
Record Nr. |
UNINA9910711960503321 |
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Autore |
Barnes Ivan <1931-> |
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Titolo |
Field measurement of alkalinity and pH / / by Ivan Barnes |
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Pubbl/distr/stampa |
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[Washington, D.C.] : , : United States Department of the Interior, Geological Survey, , 1964 |
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Descrizione fisica |
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1 online resource (17 pages) : illustrations |
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Collana |
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Geological Survey water-supply paper ; ; 1535-H |
Geochemistry of water |
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Soggetti |
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Water - Analysis |
Hydrogen-ion concentration - Measurement |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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"Method for determinations of pH in the field and of end points for alkalinity titrations." |
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Nota di bibliografia |
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Includes bibliographical references (page 17). |
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3. |
Record Nr. |
UNINA9910299462503321 |
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Autore |
Freni Pierluigi |
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Titolo |
Innovative Hand Exoskeleton Design for Extravehicular Activities in Space / / by Pierluigi Freni, Eleonora Marina Botta, Luca Randazzo, Paolo Ariano |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2014 |
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ISBN |
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Edizione |
[1st ed. 2014.] |
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Descrizione fisica |
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1 online resource (98 p.) |
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Collana |
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PoliMI SpringerBriefs, , 2282-2577 |
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Disciplina |
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Soggetti |
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Aerospace engineering |
Astronautics |
Robotics |
Automation |
Ceramics |
Glass |
Composite materials |
Biomedical engineering |
Aerospace Technology and Astronautics |
Robotics and Automation |
Ceramics, Glass, Composites, Natural Materials |
Biomedical Engineering and Bioengineering |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references at the end of each chapters. |
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Nota di contenuto |
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Introduction -- Users' Requirements -- State of the Art -- The Solution -- Concept Layout -- Conclusions. |
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Sommario/riassunto |
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Environmental conditions and pressurized spacesuits expose astronauts to problems of fatigue during lengthy extravehicular activities, with adverse impacts especially on the dexterity, force and endurance of the hands and arms. A state-of-the-art exploration in the field of hand exoskeletons revealed that available products are unsuitable for space applications because of their bulkiness and mass. This book proposes a novel approach to the development of hand |
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exoskeletons, based on an innovative soft robotics concept that relies on the exploitation of electroactive polymers operating as sensors and actuators, on a combination of electromyography and mechanomyography for detection of the user’s will and on neural networks for control. The result is a design that should enhance astronauts’ performance during extravehicular activities. In summary, the advantages of the described approach are a low-weight, high-flexibility exoskeleton that allows for dexterity and compliance with the user’s will. |
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