scholarly journals Investigation of the effect of pH adjustment on the stability of nanofluid

2018 ◽  
Author(s):  
Sadik Umar ◽  
Fauziah Sulaiman ◽  
Nurhayati Abdullah ◽  
Saiful Najmee Mohamad
Keyword(s):  
Effect Of Ph ◽  
Ph Adjustment ◽  
The Stability

Instant 99mTc-Labelled Glucoheptonate Kit for Kidney Imaging

1983 ◽  
Vol 22 (05) ◽  
pp. 246-250 ◽  
Author(s):  
M. Al-Hilli ◽  
H. M. A. Karim ◽  
M. H. S. Al-Hissoni ◽  
M. N. Jassim ◽  
N. H. Agha
Keyword(s):  
Sodium Hydroxide Solution ◽  
Normal Subjects ◽  
Organ Distribution ◽  
Stable Complex ◽  
Scintillation Camera ◽  
Ph Adjustment ◽  
The Mean ◽  
The Stability ◽  
Kidney Imaging ◽  
Mean Concentration

Gelchromatography column scanning has been used to study the fractions of reduced hydrolyzed 99mTc, 99mTc-pertechnetate and 99mTc-chelate in a 99mTc-glucoheptonate (GH) preparation. A stable high labelling yield of 99mTc-GH complex in the radiopharmaceutical has been obtained with a concentration of 40-50 mg of glucoheptonic acid-calcium salt and not less than 0.45 mg of SnCl2 2 H2O at an optimal pH between 6.5 and 7.0. The stability of the complex has been found significantly affected when sodium hydroxide solution was used for the pH adjustment. However, an alternative procedure for final pH adjustment of the preparation has been investigated providing a stable complex for the usual period of time prior to the injection. The organ distribution and the blood clearance data of 99mTc-GH in rabbits were relatively similar to those reported earlier. The mean concentration of the radiopharmaceutical in both kidneys has been studied in normal subjects for one hour with a scintillation camera and the results were satisfactory.

The stability of Fe(III)-As(V) co-precipitate in the presence of ascorbic acid: Effect of pH and Fe/As molar ratio

Chemosphere ◽  
2019 ◽  
Vol 218 ◽  
pp. 670-679 ◽  
Author(s):  
Zidan Yuan ◽  
Guoqing Zhang ◽  
Jinru Lin ◽  
Xiangfeng Zeng ◽  
Xu Ma ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Molar Ratio ◽  
Effect Of Ph ◽  
Acid Effect ◽  
The Stability

scholarly journals Ekstraksi dan Uji Stabilitas Zat Warna Alami dari Bayam Merah (Alternanthera amoena Voss)

KOVALEN ◽  
2020 ◽  
Vol 6 (3) ◽  
pp. 212-217
Author(s):  
Khairuddin ◽  
Joy Noldy Baciang ◽  
Indriani ◽  
Nov Irmawati Inda
Keyword(s):  
Sun Exposure ◽  
Natural Dye ◽  
Natural Dyes ◽  
Stability Test ◽  
Stability Testing ◽  
Effect Of Ph ◽  
Color Degradation ◽  
The Stability ◽  
Better Than

Research on the extraction and stability test of natural dye from red spinach (Alternanthera amoena Voss) has been carried out. This study aims to determine the effect of pH and length of sun exposure on the stability of the dye from red spinach. Extraction using the maceration method with ethanol solvent and measurement using a UV-Vis spectrophotometer. Stability testing is carried out at pH 2-5 and sun exposure for 1-4 hours using a dark and light container. The results obtained, at pH 2 and pH 3, anthocyanins were more stable, compared to pH 4 and 5 which had greater color degradation. In exposure to sunlight, dark containers with a degradation percentage of 31.70% were better than clear containers with a percentage of 48.78%. Keywords: Anthocyanin, red spinach, natural dyes stability.

scholarly journals Effect of pH on the stability of quartz in a multi-phase system of kaolinite, hydrous Al (hydr)oxide and quartz

2019 ◽  
Vol 1 (5) ◽  
Author(s):  
Abdullah Musa Ali ◽  
Eswaran Padmanabhan ◽  
Abubakar Mijinyawa ◽  
Mohammed Yerima Kwaya
Keyword(s):  
Phase System ◽  
Effect Of Ph ◽  
The Stability ◽  
Multi Phase

Effect of pH on the stability of sodium ampicillin solutions

1974 ◽  
Vol 31 (8) ◽  
pp. 745-751 ◽  
Author(s):  
Enrico F. Raffanti ◽  
James C. King
Keyword(s):  
Effect Of Ph ◽  
The Stability

The Effect of pH Adjustment of 0.5% Bupivacaine on the Latency of Epidural Anesthesia

1990 ◽  
Vol 10 (2) ◽  
pp. 104
Author(s):  
R. A. Stevens ◽  
A. Schubert ◽  
L. Spitzer ◽  
W. L. Chester ◽  
D. Brandon ◽  
...  
Keyword(s):  
Epidural Anesthesia ◽  
Effect Of Ph ◽  
Ph Adjustment

Effect of pH and temperature on the stability of cylindrospermopsin. Characterization of decomposition products

2016 ◽  
Vol 15 ◽  
pp. 129-134 ◽  
Author(s):  
Michal Adamski ◽  
Paweł Żmudzki ◽  
Ewelina Chrapusta ◽  
Beata Bober ◽  
Ariel Kaminski ◽  
...  
Keyword(s):  
Decomposition Products ◽  
Effect Of Ph ◽  
The Stability
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