Temperature sensitive dopamine-imprinted (N,N-methylene-bis-acrylamide cross-linked) polymer and its potential application to the selective extraction of adrenergic drugs from urine

2006 ◽  
Vol 1114 (2) ◽  
pp. 239-249 ◽  
Author(s):  
Roongnapa Suedee ◽  
Vatcharee Seechamnanturakit ◽  
Bhutorn Canyuk ◽  
Chitchamai Ovatlarnporn ◽  
Gary P. Martin
Keyword(s):  
Potential Application ◽  
Selective Extraction ◽  
Temperature Sensitive ◽  
Adrenergic Drugs

Selective Transport of Water-Soluble Proteins from Aqueous to Ionic Liquid Phase via a Temperature-Sensitive Phase Change of These Mixtures

2012 ◽  
Vol 65 (11) ◽  
pp. 1548 ◽  
Author(s):  
Yuki Kohno ◽  
Nobuhumi Nakamura ◽  
Hiroyuki Ohno
Keyword(s):  
Phase Change ◽  
Aqueous Phase ◽  
Selective Dissolution ◽  
Selective Extraction ◽  
Soluble Proteins ◽  
Water Soluble ◽  
Temperature Sensitive ◽  
Salting Out ◽  
Key Factor ◽  
The Difference

Mixtures of some ionic liquids (ILs) and water show reversible phase change between a homogeneous mixture and phase-separated state by a small change in temperature. Some water-soluble proteins have been migrated from the aqueous to the IL phase. When tetrabutylphosphonium 2,4,6-trimethylbenzenesulfonate was used as an IL, cytochrome c (Cyt.c) was found to be extracted from the water phase to the IL phase. Conversely, both horseradish peroxidase (HRP) and azurin remained in the aqueous phase. This selective extraction was comprehended to be due to the difference in solubility of these proteins in both phases. The separated aqueous phase contained a small amount of IL, which induced the salting-out of Cyt.c. On the other hand, condensed IL phase promoted the salting-in of Cyt.c. As a result, Cyt.c was preferably dissolved in the hydrated IL phase rather than aqueous phase. In the case of HRP, there was only a salting-out profile upon increasing the concentration of IL, which induced selective dissolution of HRP in the aqueous phase. These results clearly suggest that the profile of salting-out and salting-in for proteins is the key factor to facilitate the selective extraction of proteins from aqueous to the IL phase.

scholarly journals Facile Fabrication of a Self-Healing Temperature-Sensitive Sensor Based on Ionogels and Its Application in Detection Human Breath

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 343 ◽  
Author(s):  
Fengxia Wang ◽  
Shaohui Zhang ◽  
Yunlin Zhang ◽  
Qihang Lin ◽  
Yun Chen ◽  
...  
Keyword(s):  
Electrical Property ◽  
Potential Application ◽  
High Sensitivity ◽  
Temperature Sensitive ◽  
Self Healing ◽  
Human Breath ◽  
Detection Range ◽  
Facile Fabrication ◽  
Sensitive Sensor ◽  
Healing Temperature

The biocompatible strechable ionogels were prepared by a facile solution-processed method. The ionogels showed outstanding stretchable and self-healing properties. The electrical property could revert to its original state after 4 s. The repaired ionogels could still bear stretching about 150%. Moreover, the ionogels exhibited high sensitivity and wide-detection range to temperature. The temperature-sensitive sensor could detect the human breath frequency and intensity, showing potential application in detecting disease.

Dynamic Colour Change of Multifunctional Thermochromic-Fluorescent Pigments

2016 ◽  
Vol 859 ◽  
pp. 162-168 ◽  
Author(s):  
Ondrej Panák ◽  
Markéta Držková ◽  
Marie Kaplanová ◽  
Marta Klanjšek Gunde
Keyword(s):  
High Temperature ◽  
Potential Application ◽  
Fluorescent Dyes ◽  
Colour Change ◽  
Fluorescent Dye ◽  
Formaldehyde Resin ◽  
Temperature Sensitive ◽  
Melamine Formaldehyde ◽  
Colour Difference ◽  
Reflectance Measurements

The aim of presented paper was to prepare and characterise multifunctional thermochromic-fluorescent pigments with potential application in anti-counterfeiting patterns in security printing. Pigments were prepared by microencapsulation of chosen thermochromic system into melamine formaldehyde resin and the resin was modified with Uranine and Acid Red 52 fluorescent dyes, respectively. The fluorescence at low and high temperature was measured by spectrofluorometer. The concentration of 2.3 × 10–5 grams of fluorescent dye per one gram of polymer is sufficient for detection of fluorescence of modified polymeric shell. The dynamic colour change of prepared pigments was analysed in terms of cumulative colour difference obtained from reflectance measurements. Resulting multifunctional pigments exhibit much lower colour contrast and wider temperature sensitive interval in comparison with the bulk thermochromic system. However, the concept of two levels of verification based on two types of colour change embodied in one pigment has been approved.

Intraarterial gelation of injectable cationic pH/temperature-sensitive radiopaque embolic hydrogels in a rabbit hepatic tumor model and their potential application for liver cancer treatment

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47687-47697 ◽  
Author(s):  
Cong Truc Huynh ◽  
Quang Vinh Nguyen ◽  
Jae Seung Lym ◽  
Bong Sup Kim ◽  
Dai Phu Huynh ◽  
...  
Keyword(s):  
Liver Cancer ◽  
Cancer Treatment ◽  
Potential Application ◽  
Tumor Model ◽  
Hepatic Tumor ◽  
Local Temperature ◽  
Temperature Sensitive ◽  
Amino Ester

Radiopaque embolic solutions employing cationic poly(amino ester urethane)-based copolymers are injected into a rabbit hepatic tumor artery and form hydrogels in response to local temperature and pH for chemoembolization.

Oncogenesis and the Lucké Virus

1968 ◽  
Vol 26 ◽  
pp. 200-201
Author(s):  
A. E. Vatter ◽  
J. Zambernard
Keyword(s):  
Rna Viruses ◽  
Vegetative State ◽  
Temperature Sensitive ◽  
Structural Level ◽  
Oncogenic Viruses ◽  
Dna Viruses ◽  
Leopard Frogs ◽  
Renal Adenocarcinoma ◽  
Induced Tumors ◽  
Northern Leopard Frogs

Oncogenic viruses, like viruses in general, can be divided into two classes, those that contain deoxyribonucleic acid (DNA) and those that contain ribonucleic acid (RNA). The RNA viruses have been recovered readily from the tumors which they cause whereas, the DNA-virus induced tumors have not yielded the virus. Since DNA viruses cannot be recovered, the bulk of present day investigations have been concerned with RNA viruses.The Lucké renal adenocarcinoma is a spontaneous tumor which occurs in northern leopard frogs (Rana pipiens) and has received increased attention in recent years because of its probable viral etiology. This hypothesis was first advanced by Lucké after he observed intranuclear inclusions in some of the tumor cells. Tumors with inclusions were examined at the fine structural level by Fawcett who showed that they contained immature and mature virus˗like particles.The use of this system in the study of oncogenic tumors offers several unique features, the virus has been shown to contain DNA and it can be recovered from the tumor, also, it is temperature sensitive. This latter feature is of importance because the virus can be transformed from a latent to a vegetative state by lowering or elevating the environmental temperature.

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