Detection of adulteration of locust bean gum with guar gum by capillary electrophoresis and polarized light microscopy

2000 ◽  
Vol 17 (1) ◽  
pp. 3-15 ◽  
Author(s):  
Cheryl L. Flurer ◽  
John B. Crowe ◽  
Karen A. Wolnik
Keyword(s):  
Capillary Electrophoresis ◽  
Light Microscopy ◽  
Guar Gum ◽  
Polarized Light ◽  
Polarized Light Microscopy ◽  
Locust Bean Gum ◽  
Locust Bean

Ferroelastic domains and phase transitions in organic–inorganic hybrid perovskite CH3NH3PbBr3

2021 ◽  
Author(s):  
Maryam Bari ◽  
Alexei A. Bokov ◽  
Zuo-Guang Ye
Keyword(s):  
Phase Transitions ◽  
Electric Field ◽  
Light Microscopy ◽  
Domain Structure ◽  
Polarized Light ◽  
External Stress ◽  
Polarized Light Microscopy ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Ferroelastic Domains

Polarized light microscopy reveals twin domains and symmetry of the phases in CH3NH3PbBr3 crystal; domain structure remains unresponsive to electric field but changes under external stress, confirming ferroelasticity while ruling out ferroelectricity.

scholarly journals Exploiting the Binocular Head in Polarized Light Microscopy

1994 ◽  
Vol 2 (4) ◽  
pp. 16-16
Author(s):  
Walter C. McCrone
Keyword(s):  
Light Microscopy ◽  
Polarized Light ◽  
Polarized Light Microscopy ◽  
The Other ◽  
Monocular Viewing ◽  
Area Of Interest

Having been brought up on monocular microscopes I find the omnipresent binocular systems a luxury. To support this viewpoint I'd like to suggest some benefits you may not have considered.Because I'm used to monocular viewing I sometimes use two different oculars, say 10X and 25X, in order to scan quickly to find an area of interest and then to examine the detail with higher magnification. Occasionally I use both oculars simultaneously and “concentrate” on either image to the exclusion of the other. A better way is to set the interocular distance at the extreme setting most different from your own interocular distance. By moving your head about a centimeter either way you can use either ocular.

Structural Morphology of Rabbit Patella and Suprapatella Cartilage by Microscopic MRI and Polarized Light Microscopy

Cartilage ◽  
2021 ◽  
pp. 194760352199088
Author(s):  
Hannah Mantebea ◽  
Syeda Batool ◽  
Mouhamad Hammami ◽  
Yang Xia
Keyword(s):  
Articular Cartilage ◽  
Light Microscopy ◽  
Design Method ◽  
Strong Dependence ◽  
Polarized Light ◽  
Polarized Light Microscopy ◽  
Structural Morphology ◽  
Pixel Resolution ◽  
Patellar Cartilage ◽  
Quantitative Results

Objective In order to appreciate the roles articular cartilage of sesamoid bones and sesamoid fibrocartilage play in anatomy and pathology, the articular cartilage of the patella ( n = 4) and suprapatella ( n = 4) (a sesamoid fibrocartilage) of 12 to 14 weeks old New Zealand rabbits were studied qualitatively and quantitatively. Design/Method The intact knee joints and block specimens from the joints were imaged using microscopic magnetic resonance imaging (µMRI) at a 97.6-µm pixel resolution for the former and 19.5-µm resolution for the latter. Histological sections were made out of the µMRI-imaged specimens, which were imaged using polarized light microscopy (PLM) at 0.25-, 1-, and 4-µm pixel resolutions. Results The patella cartilage varied in thickness across the medial to lateral ends of the sesamoid bone with the central medial aspect slightly thicker than the lateral aspect. The suprapatella fibrocartilage decreased proximally away from the knee joint. Quantitative results of patellar cartilage showed strong dependence of fiber orientation with the tissue depth. Three histological zones can be clearly observed, which are similar to articular cartilage from other large animals. The sesamoid fibrocartilage has one thin surface layer (10 µm thick) of parallel-arranged structured fibers followed immediately by the majority of random fibers in bulk tissue. T2 relaxation time anisotropy was observed in the patellar cartilage but not in the bulk fibrocartilage. Conclusion Given the different functions of these 2 different types of cartilages in joint motion, these quantitative results will be beneficial to future studies of joint diseases using rabbits as the animal model.

High-Resolution Fiber and Fiber Tract Imaging Using Polarized Light Microscopy in the Human, Monkey, Rat, and Mouse Brain

2016 ◽  
pp. 369-389 ◽  
Author(s):  
Karl Zilles ◽  
Nicola Palomero-Gallagher ◽  
David Gräßel ◽  
Philipp Schlömer ◽  
Markus Cremer ◽  
...  
Keyword(s):  
High Resolution ◽  
Light Microscopy ◽  
Mouse Brain ◽  
Polarized Light ◽  
Polarized Light Microscopy ◽  
Fiber Tract

scholarly journals FORMULATION AND EVALUATION OF FAST DISSOLVING FILMS OF ELETRIPTAN HYDROBROMIDE

2017 ◽  
Vol 9 (2) ◽  
pp. 59
Author(s):  
K. Pallavi ◽  
T. Pallavi
Keyword(s):  
Drug Release ◽  
Xanthan Gum ◽  
Guar Gum ◽  
Methyl Cellulose ◽  
Synthetic Polymers ◽  
Locust Bean Gum ◽  
Solvent Casting ◽  
Casting Method ◽  
Disintegration Time ◽  
Locust Bean

Objective: The main aim of the present research was to develop an oral fast dissolving polymeric film (FDF) with good mechanical properties, faster disintegration and dissolution when placed on the tongue.Methods: Eletriptan hydrobromide is prescribed for the treatment of mild to a moderate migraine. The polymers selected for preparing films were Pullulan, Maltodextrin (MDX), Acacia, Sodium alginate (SA), Locust bean gum (LBG), Guar gum (GG), Xanthan gum (XG), Polyvinyl alcohol (PVA), Polyvinyl pyrrolidine (PVP), Hydroxyl propyl methyl cellulose (HPMC) E5, and HPMC E15. Twelve sets of films FN1–FN12 were prepared by solvent casting method with Pullulan and combination of Acacia, MDX, SA, LBG, GG, XG, PVA, PVP, HPMC E5 and HPMC E15. Five sets of films FS1–FS5 were prepared using synthetic polymers like PVA, PVP, HPMC E5 and HPMC E15.Results: From all the prepared polymer formulations, FN2, FN8, and FS3 were selected based on disintegration time, and drug release and amongst this three FN2 was optimised based on its disintegration time (D. T). The percent drug release of the optimised film was compared with the percent release of the pure drug.Conclusion: The optimised formulation had a D. T of 16 s and a percent drug release of 97.5% in 10 min in pH 6.8 phosphate buffer and 100.6% drug release in 10 min in 0.1N HCl.

Viscoelastic properties of xanthangalactomannan mixtures: comparison of guar gum with locust bean gum

1997 ◽  
Vol 34 (3) ◽  
pp. 165-175 ◽  
Author(s):  
Catherine Schorsch ◽  
Catherine Garnier ◽  
Jean-Louis Doublier
Keyword(s):  
Viscoelastic Properties ◽  
Guar Gum ◽  
Locust Bean Gum ◽  
Locust Bean
Sign in / Sign up

Export Citation Format

Share Document