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I. Introduction Early estimatiOons Oof pH values in plant cells
were based UPOon determina- tiOons Oof the electrOomOotive fOorce
(EMF) develOoped between a standard hydrOo- gen electrOode and the
fluid expressed frOom crushed tissues Oor liberated by cutting
large algal cells such as thOose Oof Valonia, Chara Oor Nitella.
These EMF values were then translated intOo terms Oof hydrQgen iOon
CQncentratiQn Qn the assumptiQn that the numerical value Qf the EMF
in VOolts depended entirely UPOon the cOoncentratiOon Qf hydrOogen
iQns. Then hydrQgen iQn COoncentratiOon measured in this way was
fQund tOo act in biOoIQgical reactiQns, mainly enzyme activity, in
such a way that the apparent hydrQgen iOon cOoncentratiOon was
related lQgarithmically tOo the prQcess investigated. SQ SORENSEN
in 1909 intrQduced the pH scale based upOon what he called the 1
"hydrOogen-iOon eXPOonent. " He defined PH+ as -(1 (1909, p. 28,
nQt p. 4) Oog PH;) and PH+ became pH as a matter Qf tYPOographical
cQnvenience. As far as living, uncrushed, plant cells were
cOoncerned, the available fluid was usually soo minute in amQunt,
except in special cases, that hydrOogen electrQde methQds were nOot
applicable tOo a general survey. AttentiOon was therefQre directed
tOo pH indicatOors. These indicatQrs vary in cOoIQur, usually frQm
Qne cQIOour tOo anOother cQIQur with dichrQic inter- mediate tints
within a range Oof 1.
For collectors of wartime and post-war Zeiss cameras, from both
East and West Germany, including Voigtlander, and the Soviet
clones. The authors unravel the complex story of the Zeiss Stiftung
and provide comprehensive tables of all models.
This is a reproduction of a book published before 1923. This book
may have occasional imperfectionssuch as missing or blurred pages,
poor pictures, errant marks, etc. that were either part of the
original artifact, or were introduced by the scanning process. We
believe this work is culturally important, and despite the
imperfections, have elected to bring it back into print as part of
our continuing commitment to the preservation of printed
worksworldwide. We appreciate your understanding of the
imperfections in the preservation process, and hope you enjoy this
valuable book.++++The below data was compiled from various
identification fields in the bibliographic record of this title.
This data is provided as an additional tool in helping to ensure
edition identification: ++++ The Master's Joy: The Servant's
Reward, A Sermon Occasioned By The Death Of The Rev. W.
Heudebourck; Preached By J. Small; And An Address Delivered At The
Interment, By T. Golding. To Which Are Added, Extracts From Mr.
Heudebourck's Diary James Small (of Axminster.), Thomas Golding,
William Heudebourck
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
INTRODUCTION TO MARINE BIOLOGY sparks curiosity about the marine
world and provides an understanding of the process of science.
Taking an ecological approach and intended for non-science majors,
the text provides succinct coverage of the content while the photos
and art clearly illustrate key concepts. Studying is made easy with
phonetic pronunciations, a running glossary of key terms,
end-of-chapter questions, and suggestions for further reading at
the end of each chapter. The open look and feel of INTRODUCTION TO
MARINE BIOLOGY and the enhanced art program convey the beauty and
awe of life in the ocean. Twenty spectacular photos open the
chapters, piquing the motivation and attention of students, and
over 60 photos and pieces of art are new or redesigned.
New to this edition, this lab manual has been specially designed to
help students learn more about marine life and their habits.
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