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Peptides analysis in blood plasma using on-line system of supported liquid membrane and high-performance liquid chromatography [An article from: Analytica Chimica Acta]
This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
The potential of using supported liquid membrane (SLM) technique, combined with reversed-phase high-performance liquid chromatography (RP-HPLC) has been investigated for the determination of peptides in human blood plasma. The peptides studied were "D"LLeu"D"LPhe, MetLeuPhe, GlyLeuTyr and ValGluProIleProTyr. The carrier (Aliquat 336) was incorporated in membrane phase in order to facilitate the transport of investigated peptides. After extraction, the analyte-enriched acceptor phase was directly injected into an HPLC system for analysis. With SLM, high selectivity and efficiency were achieved for extraction of peptides in aqueous solutions. Lower extraction efficiency was obtained in plasma sample. The limiting factors were the presence of salts and proteins in blood plasma. The necessary of ultrafiltration application before the SLM was required in order to improve its stability. The minimum quantifiable concentration was 90-130ng/ml of the investigated peptides based on 0.5ml plasma. The standard curve was linear over the concentration range of 0.05-10@mg/ml.
PCA106: Non-Liquid Reflections
Made Explore (Highest #490). Thanks! :)
Assignment: PCA106 – Non-Liquid Reflections
Date: May 9-23, 2010
Image Tag: pca106
From: Lea and Luna (Lea)
Reflections are fun to capture, but doing so without water or the aid of any type of liquid is a bit more of a challenge.
What it Took
Looking at the world to find reflections that were not on water was cool. And, when paying attention, it was neat to see that they are everywhere. WIT was choosing which reflection to select and submit for the assignment, first. Work has been exceptionally heavy for the past month, so, making time to go out and shoot has been a challenge. All of my captures were from "in the moment" opportunities of everyday life (which, I guess, you could argue are the way images become inspired). I'm not in love with the ones I found, but am motivated to keep looking for reflections in interesting places to capture.
The one submitted for the assignment is a building in downtown Baltimore when we had lunch last week (Baltimore has a ton of mirrored buildings, which I never noticed before this assignment, so thanks, Lea!). It has a totally reflective surface, is blue, and has outcroppings that make it reflect back on itself, which creates mirrors within mirrors, and an abstract feel. Post-processing included a significant crop to isolate the reflection, "auto enhance" under "quick fixes" in Aperture, and an additional .2 in vibrancy. The original photo is in the comments section, below, as are some, "also rans" for the assignment.
Camera: Canon EOS Rebel T1i
Lens: Canon ef 70-200mm f/2.8
Focal Length: 70mm
Exposure Value: 0
Shutter Speed: 1/125 sec.
Flash: off; did not fire
Post-processing: see above
DXDL-60Z ?????Liquid Packaging Machine
Suitable for packing liquid of food, medicament and chemical. Such as pesticide, shampoo, body foam bath lotion, facial cream, ingredient oil, fruit sauce, tomato ketchup and vinegar.
A. Controlled by step motor, the system features high precision, and the length of the bag can be accurately changed without adjusting other parts. It achieves complete logo when packing color packing materials.
B. The paper feeding part applies dead-weight motor paper pressing and conveying structure, the paper conveying length is extended one time, with flat bag making and no side mismatch. The speed and length of bag achieve stepless adjustment, the packing speed and length of bag can be adjusted in rated range without replacing parts.
C. Unique in-laidembeded mouth sealing, enhanced hot sealing mechanism, intelligent temperature control by temperature controller, featuring fine head balance, fine packing performance, low noise, clear sealing texture and strong sealing performance.
D. Rotating roller rolling knife bag cutting mechanism, achieving straight line-shaped cutting pattern cutting and straight line-shaped continuous cutting, the cutter features stable and reliable with easy operation.
Range of measuring1-50ml or 50-100ml
Bag SizeL: 50-120mm W: 40-100mm
Source Voltage380V/50Hz, 220V/50-60Hz
Packing materialPaper/PE, PET/AL, Foil/PE, Nylon/PE, Tea leaf filtering paper etc.
Overall Dimension625(L)* 750(W)*1550(H)mm
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