Role of Canopy Management in Controlling High pH in Tannat Grapes and Wines

2012 ◽  
Vol 63 (4) ◽  
pp. 554-558 ◽  
Author(s):  
Andrés Coniberti ◽  
Virginia Ferrari ◽  
Laura Fariña ◽  
Francisco Carrau ◽  
Eduardo Dellacassa ◽  
...  
Keyword(s):  
High Ph ◽  
Canopy Management

The orientation of sickle hemoglobin fibers within fascicles

1988 ◽  
Vol 46 ◽  
pp. 400-401
Author(s):  
Christopher A. Miller ◽  
Bridget Carragher ◽  
William A. McDade ◽  
Robert Josephs
Keyword(s):  
Sickle Cell ◽  
Sickle Cell Anemia ◽  
Relative Orientation ◽  
Unit Cell ◽  
Red Cell ◽  
High Ph ◽  
Sickle Hemoglobin ◽  
Polar Crystal ◽  
Helical Configuration

Highly ordered bundles of deoxyhemoglobin S (HbS) fibers, termed fascicles, are intermediates in the high pH crystallization pathway of HbS. These fibers consist of 7 Wishner-Love double strands in a helical configuration. Since each double strand has a polarity, the odd number of double strands in the fiber imparts a net polarity to the structure. HbS crystals have a unit cell containing two double strands, one of each polarity, resulting in a net polarity of zero. Therefore a rearrangement of the double strands must occur to form a non-polar crystal from the polar fibers. To determine the role of fascicles as an intermediate in the crystallization pathway it is important to understand the relative orientation of fibers within fascicles. Furthermore, an understanding of fascicle structure may have implications for the design of potential sickling inhibitors, since it is bundles of fibers which cause the red cell distortion responsible for the vaso-occlusive complications characteristic of sickle cell anemia.

The role of calcium in high pH excursions for reactivated GAC

Carbon ◽  
2005 ◽  
Vol 43 (3) ◽  
pp. 511-518 ◽  
Author(s):  
David W. Mazyck ◽  
Fred S. Cannon ◽  
Morgana T. Bach ◽  
Ljubisa R. Radovic
Keyword(s):  
High Ph

Role of nickel and chrome in the active-passive transition in low-strength steels in media with high pH values

1989 ◽  
Vol 25 (1) ◽  
pp. 35-39
Author(s):  
A. V. Vasilik ◽  
S. I. Girnyi ◽  
R. K. Melekhov
Keyword(s):  
High Ph ◽  
Ph Values ◽  
Passive Transition ◽  
Low Strength

scholarly journals 6S RNA Regulation of pspF Transcription Leads to Altered Cell Survival at High pH

2006 ◽  
Vol 188 (11) ◽  
pp. 3936-3943 ◽  
Author(s):  
Amy E. Trotochaud ◽  
Karen M. Wassarman
Keyword(s):  
Direct Interaction ◽  
Independent Manner ◽  
Rna Regulation ◽  
Altered Expression ◽  
High Ph ◽  
6S Rna ◽  
Altered Cell ◽  
Similar Growth ◽  
Better Than

ABSTRACT 6S RNA is a highly abundant small RNA that regulates transcription through direct interaction with RNA polymerase. Here we show that 6S RNA directly inhibits transcription of pspF, which subsequently leads to inhibition of pspABCDE and pspG expression. Cells without 6S RNA are able to survive at elevated pH better than wild-type cells due to loss of 6S RNA-regulation of pspF. This 6S RNA-dependent phenotype is eliminated in pspF-null cells, indicating that 6S RNA effects are conferred through PspF. Similar growth phenotypes are seen when PspF levels are increased in a 6S RNA-independent manner, signifying that changes to pspF expression are sufficient. Changes in survival at elevated pH most likely result from altered expression of pspABCDE and/or pspG, both of which require PspF for transcription and are indirectly regulated by 6S RNA. 6S RNA provides another layer of regulation in response to high pH during stationary phase. We propose that the normal role of 6S RNA at elevated pH is to limit the extent of the psp response under conditions of nutrient deprivation, perhaps facilitating appropriate allocation of diminishing resources.

The Role of Adsorption in High pH Flooding

1988 ◽  
Author(s):  
T.S. Ramakrishnan ◽  
D.T. Wasan
Keyword(s):  
High Ph

Role of positive charge in the competitive effect of phosphate on sulfate sorption by an allophanic soil

Soil Research ◽  
1988 ◽  
Vol 26 (1) ◽  
pp. 171 ◽  
Author(s):  
KB Marsh ◽  
JK Syers ◽  
RW Tillman
Keyword(s):  
Soil Ph ◽  
Positive Charge ◽  
High Surface ◽  
Competitive Effect ◽  
High Ph ◽  
Ph Range ◽  
Allophanic Soil ◽  
Reduced Surface

The effect of phosphate (P) on the sorption of sulfate (S) by an allophanic soil with high surface positive charge was investigated in the pH range of 5.3-7.0 obtained by incubation with Ca(OH)2. The effect of P on S sorption was directly related to the effect of P on surface positive charge. At low soil pH, P reduced surface positive charge to a larger extent than at high pH and this was associated with a larger effect of P on S sorption.

Role of ENA ATPase in Na+ efflux at high pH in bryophytes

2009 ◽  
Vol 71 (6) ◽  
pp. 599-608 ◽  
Author(s):  
Ana Fraile-Escanciano ◽  
Blanca Garciadeblás ◽  
Alonso Rodríguez-Navarro ◽  
Begoña Benito
Keyword(s):  
High Ph ◽  
Na Efflux
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