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991.
Progress in Boronic Acid-Based Fluorescent Glucose Sensors 总被引:1,自引:0,他引:1
Effective management of diabetes relies on the frequent monitoring of blood glucose concentrations. The current approach of blood sampling and glucose concentration determination in vitro) presents many problems. Therefore, there is a drive for the development of non-invasive and continuous monitoring of glucose concentrations. The use of implanted glucose fluorescent sensors represents a promising approach. Due to its strong interaction with diol moieties, the boronic acid group often plays a critical role in the design of such glucose sensors. This paper reviews the progress in this area during the last ten years. 相似文献
992.
Bakshi MS Kaur I Sood R Singh J Singh K Sachar S Singh KJ Kaur G 《Journal of colloid and interface science》2004,271(1):227-231
Mixed micelle formation by tetradecyltrimethylammonium (TTAB) and tetradecyltriphenylphosphonium bromides (TTPB) with benzyldimethyltetradecylammonium chloride (BTDACl) was studied with the help of conductivity and Kraft point measurements. The BTDACl + TTAB mixtures showed synergistic interactions whereas those of BTDACl + TTPB indicated weak antagonistic behavior. From Kraft temperature measurements, the enthalpy of fusion (H(1)(0)) from solid hydrated BTDACl to the liquid state in the presence of TTAB or TTPB was computed. It was found that DeltaH(1)(0) was much more positive for BTDACl + TTPB than for BTDACl + TTAB mixtures. 相似文献
993.
The mixed-micelle formation by hexadecyltrimethylammonium bromide (HTAB) with hexadecyltriphenylphosphonium bromide (HTPB) and hexadecyltributylphosphonium bromide (HTBB), and by hexadecylpyridinium bromide (HPyBr) with HTPB and HTBB has been studied with the help of conductivity, viscometry, and NMR studies. The conductivity studies showed close-to-ideal mixing in all cases with weak synergistic interactions. The relative viscosity is more sensitive than the conductivity and demonstrated that the micellization of HTAB, HPyBr, HTPB, and HTBB proceeded through the appearance of a minimum, whereas their mixtures showed a strong maximum in each case. NMR measurements suggested that bulky head groups of HTPB and HTBB induce significant steric hindrance in the mixed state upon mixing with HTAB and HPyBr. The appearance of the maximum shown by the relative viscosity in the mixed-micellization process is due to steric compulsions, which may also lead to some structural transitions. 相似文献
994.
Subodh Kumar Maninder Singh Hundal Navneet Kaur Rajinder Singh Harjit Singh 《Tetrahedron letters》1995,36(52):9543-9546
The structures of Ag selective 1 show that methyl and benzyl substituent at amide nitrogen in 1c and 1d induce optimal molecular organisation and electron rich character in the parent, electron deficient, water coordinated macrocycle 1 a. Whereas bulky benzyl substituent and longer spacer cause much molecular disorganisation in 1f. 相似文献
995.
Solvolytic reactions between monobromoacetic acid and metal oxides, carbonates, oxalates, formates, sulphites, nitrates, nitrites and chlorides form monobromoacetates. In the case of transition metals, a molecule of solvent is also attached to the solvolysed products. The solvolysed products have been investigated by IR, magnetic susceptibility and molar conductance measurements. Lewis bases form adducts with these products. The solvolytic reactions have been explained on the bases of autoionization of monobromoacetic acid reported earlier1 as, 2CH2BrCOOH ? CH2BrCOOH2++ CH2BrCOO?. 相似文献
996.
Summary A new reagent has been proposed for the determination of beryllium. The method is based on the reaction between beryllium and carminic acid, forming a Be-carminic acid complex at pH 4. The absorption is measured at 580 nm. The molar absorptivity is 2.25×103 mol–1 cm–1. Beer's law is obeyed from 0.4 ppm to 1.6 ppm of beryllium. The effects of pH, reagent concentration and interferences from foreign ions have been studied. The method has been applied to the determination of beryllium in polluted water and blood samples.
Spektralphotometrische Bestimmung von Beryllium mit CarminsÄure相似文献
997.
We describe a simple method to measure the top quark mass in the
channel that may be useful in Run II of D? detector. The method is validated by applying it to the Run Ib eμ data. 相似文献
998.
Ghatee and Hashemi [M. Ghatee, S.M. Hashemi, Ranking function-based solutions of fully fuzzified minimal cost flow problem, Inform. Sci. 177 (2007) 4271–4294] transformed the fuzzy linear programming formulation of fully fuzzy minimal cost flow (FFMCF) problems into crisp linear programming formulation and used it to find the fuzzy optimal solution of balanced FFMCF problems. In this paper, it is pointed out that the method for transforming the fuzzy linear programming formulation into crisp linear programming formulation, used by Ghatee and Hashemi, is not appropriate and a new method is proposed to find the fuzzy optimal solution of multi-objective FFMCF problems. The proposed method can also be used to find the fuzzy optimal solution of single-objective FFMCF problems. To show the application of proposed method in real life problems an existing real life FFMCF problem is solved. 相似文献
999.
Kaur Harsimaran Chakraborty N. Juglan K. C. Kumar Harsh 《Journal of solution chemistry》2021,50(8):1079-1102
Journal of Solution Chemistry - The interlinkage among the molecules of polyethylene glycols (PEG-200 and PEG-600) in aqueous D-Mannitol solutions are analyzed in the current investigation from the... 相似文献
1000.
This report describes formation of soft vesicular structures by a tetrapeptide and its disruption triggered by potassium ions. 相似文献