Microemulsion represents an attractive platform for fundamental and applied biomedical research because the emulsified droplets can serve as millions of compartmentalized micrometer-sized reactors amenable to high-throughput screening or online monitoring. However, establishing stable emulsions with surfactants that are compatible with biological applications remains a significant challenge. Mo...

Polycondensation of 9-mesityl-10-methylacridinium-bridged organosilane in the presence of a nonionic surfactant yielded a mesostructured organosilica solid with a functional framework that exhibited long-lived photoinduced charge separation.

Aimed to obtain a type of oil displacement with both surface activity and polymer performances, this paper based on mixing initiators at low temperatures, prepared a type of anion–nonionic surface–active polymer oil displacement agent (ANSP–1) by introducing polymerizable anion–nonionic surfmer (ANS–1), acrylamide (AM) and acrylic acid (AA). Structure of ANSP–1 was measured by FTIR. Laboratory ...

High performance liquid chromatography (HPLC) is the preferred analytical technique for the separation and identification of surfactants in consumer products. Although many HPLC columns are available for surfactant analysis, none of these columns provide optimal selectivity for the analysis of anionic, nonionic, cationic, and amphoteric surfactants. This article describes an HPLC column, Acclai...

been characterized quite well using a variety of techniques individually and in combination over the last decade. Interest in these surfactant systems stems from a broad application base. These surfactant systems, or “detergents” have found application in oil recovery due to enhanced solubility, higher cloud points, and lower Krafft points than the corresponding pure surfactant in solution. The...

The precursor of an RNA molecule from T4-infected Escherichia coli cells (p2Sp1 RNA) has the capacity to cleave itself at specific positions ((UpA (137-138) and CpA (170-171)) within a possible loop and stem structure. This specific cleavage requires at least a monovalent cation and nonionic detergents. To confirm that the sequence-specific cleavage occurs autolytically, we studied the selectiv...

The intravascular administration of the ionic radiocontrast agent sodium iothalamate (2.9 g of iodine/kg body wt) to rats induced an increase in plasma concentration of immunoreactive endothelin from 21.3 +/- 1.2 to 36 +/- 3 fmol/mL, preceded by a transient rise in the plasma level of atrial natriuretic peptide and associated with a fall in RBF. Equi-iodine amounts of the nonionic agents ioxagl...

The fraction in which direct contact occurs between micellar-phase phenanthrene and the bacterial cell surface was estimated by measuring the toxicity of nonionic surfactant (Tween 80 and Triton X-100) solutions to the phenanthrene-degrading bacterium, Pseudomonas putida P2. Cell viability of completely dissolved phenanthrene decreased by 30% at concentrations greater than 0.3 mg L(-1), which i...

We compared the loss of resistance (LOR) technique and fluoroscopy with the LOR technique, fluoroscopy, and epidurography for interlaminar epidural injection. A total of 371 patients with symptomatic lumbosacral radiculopathy were enrolled; 17 had a history of allergy to iodinated contrast medium or seafood. Each patient was given an oral steroid before and after the procedure. A Tuohy needle w...