37 results on '"Acker, Helmut"'
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2. A Small Flexible pH-Electrode for Esophageal Monitoring
3. A Double-Channel Ion-Selective Microelectrode with the Possibility of Fluid Ejection for Localization of the Electrode Tip in the Tissue
4. A Low-Noise, Rapid Microelectrode
5. Measurements of Potassium Activities and Membrane Potentials in Tumor Cells
6. Carrier Based Ion-Selective Liquid Membrane Electrodes and their Medical Applications
7. Ionized Calcium Secretion in the Duodenal Juice of Normals, Chronic Alcoholics and Patients with Different Stages of Chronic Alcoholic Pancreatitis
8. Microelectrodes for Novel Anions and their Application to Some Neurophysiological Problems
9. Continuous Recording of K+ and Ca2+ Pancreatic Juice of Conscious Rats Provided with an Extracorporeal Pancreatic Loop
10. Intracellular pH in Purkinje Fibers. Effect of Extracellular Acidosis in a CO2/HCO3- and HEPES Containing Medium
11. Adenosine 3’–5’ Cyclic Monophosphate (cAMP)-Induced Changes in Intracellular Ionic Activities: Relation to Epithelial Ion Transport
12. Intracellular pH, Na+ and Ca2+ Activity Measurements in Mammalian Heart Muscle
13. Intracellular Electro-Chemical Studies of Single Renal Tubule Cells and Muscle Fibers
14. New Ion-Selective Membranes
15. Intracellular K+ Activity of Cardiac Purkinje Fibers During Temperature Change
16. Intracellular Ion Activity (K+ Ca2+ and Cl-) and Membrane Potential of Frog Muscle in Vitro
17. Intracellular Potassium Activity in Normal and Hypoxic Guinea Pig Papillary Muscle
18. Micro-Electrode Measurement of Skin pH in Post-Operative Intensive Care Patients
19. The Use of K+ Sensitive Electrodes to Gain an Understanding of Myocardial Ischemia
20. The Electrogenic Na-K Pump in the Sheep Cardiac Purkinje Fibre
21. Measurements of Myocardial Extracellular Na+ K+ Ca2+, and H+ Using Ion-Selective Electrodes During Ischemia
22. Role of Calcium in the Chemoreceptive Process of the Carotid Body
23. Effects of Lithium Application Upon Extracellular Potassium Structures of the Peripheral and Central Nervous System of Rats
24. Intracellular Applications of Ca2+-Selective Microelectrodes in Voltage-Clamped Shail Neurons
25. Possible Potassium Sources in Activated Loci of Mammalian Neocortex as Reflected by Electrical Currents and Potassium Changes in the Extracellular Space
26. The Kinetics of the Potassium Concentration in Brain Extracellular Fluid During Respiratory and Metabolic Disturbances
27. The Ability of the Peptide Backbone to Bind Anions as well as Cations — Implications for Peptide Carriers, Channels and Electrodes
28. Distribution of Intra- and Extracellular K+ in the Leech Central Nervous System Studied Using Double-Barrelled Ion-Sensitive Microelectrodes
29. The Role of Extracellular Potassium and Hydrogen Activities in the Brain Cortex for Regulation of Cerebral Microcirculation in the Cat During Generalized Seizures and Specific Sensory Stimulation
30. Calibration Standards for Multi Ion Analysis in Whole Blood Samples
31. Clinical Evaluation of a Nova 1 Sodium/Potassium Electrode in a Cardiac Surgical Intensive Care Unit
32. Intravascular K+-Sensitive Electrodes for Clinical Monitoring
33. Lactate Measurements with an Enzyme Optode that Uses Two Oxygen Fluorescence Indicators to Measure the PO2 Gradient Directly
34. Bio-Electrodes for L-Histidine: A Pseudomonas Bacterial Electrode and a Histidine Ammonia-Lyase Enzyme Electrode
35. Recent Developments in the Field of Enzyme Membrane Electrodes
36. Fluorinert Liquids and the Use of Microelectrodes
37. Experience with Direct-Dip Potentiometry of Blood Serum Electrolytes
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