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Cari koleksi dengan cepat sesuai kebutuhan Anda.Perhaps the most significant change in plant electrophysiological studies that began some 25 years ago was a shift in focus frommore basic electrical and biophysical properties of plant membranes to pursuing the understanding of the plant physiological and cell biological functions of individual plant ion channel types. In the 1990s, ion channels were characterized as targets of upstream signal…
Captain Smith’s ‘‘Ivie’’ was well known to his Powhatan Indian neighbors. For centuries, they and other Native Americans had used it for medicine. Navajos made arrow poison from this native plant, and California’s Miwoks made theWestern version, it-tum in their language, into black dye for baskets (Balls, 1962). They were very aware of its harmful character—in Mexico, it was calle…
This book speaks to the technological infrastructure of time dissemination, distribution, and synchronization, specifically the architecture, protocols, and algorithms of the Network Time Protocol (NTP). NTP has been active in one form or another for over almost three decades on the public Internet and numerous private networks on the nether side of firewalls. Just about everything today that c…
A common theme in disease is death of cells. In diseases ranging from stroke to alcoholic cirrhosis of the liver, death of individual cells leads to irreversible functional loss in whole organs and ultimately mortality. For such diseases, prevention of cell death becomes a basic therapeutic goal. By contrast in neoplasia, the purpose of chemotherapy is to kill proliferating cancer cells. For ei…
To conclude, these chapters have highlighted recent developments in these disparate habitats; they have also outlined some of the challenges we face in moving our field forward. In my view, these chapters underscore two important points and, although, my observations are not particularly novel, they are worth emphasising. First, there is the overarching importance of an experimental approach (s…
Medications are an important component of health care, but each year their misuse results in over a million adverse drug events (ADEs) (IOM, 2007) that lead to office and emergency room visits as well as hospitalizations and, in some cases, death. As a patient’s most tangible source of information about what drug has been prescribed and how that drug is to be taken, the label on a container o…
The book contains five parts and concludes with an appendix on troubleshooting. Part I: Overview - This part of the book provides an introduction to the world of wireless technologies. This world is governed mostly by standards (guidelines) that, among other things, aid in ensuring interoperability among similar and countless wireless devices. Part II: Hardware - The standards discussed in Pa…
This book is about analog and digital filter design. The analog sections include both passive and active filter designs, a subject that has fascinated me for several years. Included in the analog section are filter designs specifically aimed at radio frequency engineers, such as impedance matching networks and quadrature phase all-pass networks. The digital sections include infinite impulse res…