Thin-layer immunoassay: A novel method for the detection of drugs in urine

1982 ◽  
Vol 4 (4) ◽  
pp. 328
Author(s):  
N.T. Lappas ◽  
L.C. Shugart ◽  
A.B. DeAngelo ◽  
T.L. Stockham
Keyword(s):  
Thin Layer ◽  
Novel Method

COUPLED GAS LIQUID – THIN LAYER CHROMATOGRAPHY: SIMULTANEOUS DETERMINATION OF PIPERITONE AND PIPERITONE OXIDE IN ESSENTIAL OILS

1963 ◽  
Vol 41 (6) ◽  
pp. 1535-1539 ◽  
Author(s):  
Ishwar C. Nigam ◽  
M. Sahasrabudhe ◽  
Leo Levi
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Mentha Piperita ◽  
The Novel ◽  
Mentha Arvensis ◽  
Japanese Mint ◽  
Novel Method ◽  
First Time ◽  
Layer Chromatography

Gas liquid and thin layer chromatography have been combined into a single microphysicochemical technique. The resolution of two terpenoids found in nature—piperitone and piperitone oxide—is described to illustrate the scope of the novel method of analysis. Occurrence of the epoxide in Mentha arvensis (Japanese mint), Mentha piperita (Mitcham peppermint), Eucalyptus dives Schauer, "Type" ("broad-leaved peppermint"), and Eucalyptus numerosa Maiden, var. "A" is reported for the first time. Its presence in these species should prove of biochemical as well as taxonomic interest.

Thin Layer Chromatography–Blotting, a Novel Method for the Detection of Phosphoinositides

2006 ◽  
Vol 139 (4) ◽  
pp. 663-670 ◽  
Author(s):  
Masahiro Furutani ◽  
Toshiki Itoh ◽  
Takeshi Ijuin ◽  
Kazuya Tsujita ◽  
Tadaomi Takenawa
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Novel Method ◽  
Layer Chromatography

Applications of Photoelectron Microscopy

1976 ◽  
Vol 34 ◽  
pp. 506-507
Author(s):  
William J. Baxter
Keyword(s):  
Electron Microscopy ◽  
Thermal Decomposition ◽  
Chemical Composition ◽  
Ultraviolet Radiation ◽  
Thin Layer ◽  
Edge Effects ◽  
Electron Optics ◽  
Surface Layers ◽  
Crystalline Orientation ◽  
Fluorescent Screen

In this form of electron microscopy, photoelectrons emitted from a metal by ultraviolet radiation are accelerated and imaged onto a fluorescent screen by conventional electron optics. image contrast is determined by spatial variations in the intensity of the photoemission. The dominant source of contrast is due to changes in the photoelectric work function, between surfaces of different crystalline orientation, or different chemical composition. Topographical variations produce a relatively weak contrast due to shadowing and edge effects.Since the photoelectrons originate from the surface layers (e.g. ∼5-10 nm for metals), photoelectron microscopy is surface sensitive. Thus to see the microstructure of a metal the thin layer (∼3 nm) of surface oxide must be removed, either by ion bombardment or by thermal decomposition in the vacuum of the microscope.

The removal and morphology of intact biofilms from implanted venous access devices

1995 ◽  
Vol 53 ◽  
pp. 1020-1021
Author(s):  
M.A. Gregory ◽  
G.P. Hadley
Keyword(s):  
Patient Selection ◽  
Surgical Oncology ◽  
Venous Access ◽  
Common Procedure ◽  
Indwelling Catheters ◽  
Careful Patient ◽  
Novel Method ◽  
The Subject ◽  
Vascular Catheters ◽  
Venous Access Devices

The insertion of implanted venous access systems for children undergoing prolonged courses of chemotherapy has become a common procedure in pediatric surgical oncology. While not permanently implanted, the devices are expected to remain functional until cure of the primary disease is assured. Despite careful patient selection and standardised insertion and access techniques, some devices fail. The most commonly encountered problems are colonisation of the device with bacteria and catheter occlusion. Both of these difficulties relate to the development of a biofilm within the port and catheter. The morphology and evolution of biofilms in indwelling vascular catheters is the subject of ongoing investigation. To date, however, such investigations have been confined to the examination of fragments of biofilm scraped or sonicated from sections of catheter. This report describes a novel method for the extraction of intact biofilms from indwelling catheters.15 children with Wilm’s tumour and who had received venous implants were studied. Catheters were removed because of infection (n=6) or electively at the end of chemotherapy.

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