Time and pressure dependent recoil into gas measurements of perturbed angular correlations have been carried out following the reactions24, 26Mg+18O. The levels and |g|-values measured are:39K: 2,814 keV, 1.15(12); 3,598 keV, 0.54(5);40K: 2,543 keV, 0.63(15);41K: 2,528 keV, 0.82(19); 2,774 keV, 0.46(7); 4,983 keV, 0.74(30). Meanlives measured for the41K levels are 220(5) ps, 80(2) ps and 106(3) ps, respectively. 相似文献
This paper describes a miniaturized microsphere-based immunoassay integrated into a microfluidic device for rapid quantitation of insulin. Analysis of bionic pancreas studies have revealed that the rates of absorption of insulin analogs vary from patient to patient, and even within patients on different occasions. Thus development of an approach to monitor insulin continuously allows the pharmacokinetic characteristics of insulin analogs to be determined in real-time. The authors have developed a microsphere-based continuous flow assay in a microfluidic chip that allows for the detection of insulin within seconds with high sensitivity and specificity. The method was applied to near real-time monitoring of clinical samples. Calibration plot were established for different insulin analogs such as insulin aspart (Novolog), insulin lispro (Humalog), and regular human insulin (RHI) and the insulin detection limit was 0.26 ng.mL?1 (44 pM). This sensitivity allows to detect the fasting insulin levels of T1D patients, which are reported in the range of 50–180 pM (0.3–1 ng.mL?1), after treatment with subcutaneous insulin administration. This fast approach was also applied to sera collected in intervals from T1D patients after a bolus of insulin aspart delivery. The insulin profile obtained by this method is similar to the basal and peak insulin levels as determined using the standard non-continuous ELISA reference method. In our perception, this assay will improve healthcare by personalizing diagnostics for better clinical outcome and provide real-time feedback on sensing and actuation.
We present a two-part systematic density functional theory (DFT) study of the electronic structure of selected transition
metal phthalocyanines. We use a semi-local generalized gradient approximation (GGA) functional, as well as several hybrid
exchange-correlation functionals, and compare the results to experimental photoemission data. Here, we study the intermediate
spin systems MnPc and FePc. We show that DFT calculations of these systems are extremely sensitive to the choice of functional
and basis set with respect to the obtained electronic configuration and to symmetry breaking. Interestingly, all simulated
spectra are in good agreement with experiment despite the differences in the underlying electronic configurations. 相似文献
This paper is about “strong” ideals on small cardinals. It is shown that a typical property of large cardinal measures does
not transfer to these ideals. More specifically, that precipitous ideals onPω1λ spaces may not project down to precipitous ideals on “smaller”Pω1λ′ spaces. Also, that the existence of a presaturated ideal on the bigger space does not imply the existence of a presaturated
ideal on the smaller space. 相似文献
It has been demonstrated that with suitably spaced carbon foils, tilted with respect to the particle momentum, a large polarization can be generated in high spin nuclei by the tilted foil atomic polarization. Two experiments have been carried out with such polarized high spin isomers: a measurement of the sign of the quadrupole moment of the 10+ isomer in54Fe, and a new attempt of higher sensitivity at detecting a possible positive parity admixture to the 17/2– isomer in93Tc.On leave from the Hahn-Meitner Institut, Berlin, W. Germany.On leave from Physics Department, Brooklyn College of the City of New York, Brooklyn, New York. 相似文献
The magnetic moment of the 4+, 3.55 MeV level of 18O has been determined to be |g| = 0.62 ± 0.10 in a perturbed angular correlation measurement on nuclei recoiling into gas and vacuum. Analysis of the recoil-into-gas data using the Abragam-Pound model agrees with analysis of the recoil-into-vacuum data using a model for the electronic ensemble described in a previous communication. The value of the g-factor shows the 4+ wave function to consist mainly of the configuration. 相似文献
Undesirable phototoxic and photoallergic reactions accompanying a justified increased use of sunscreen active ingredients within cosmetic products have encouraged the development of new products safer for human use. The sol-gel microencapsulation technology developed utilizes an interfacial polymerization process, allowing for the achievement of transparent silica glass microcapsules with sizes ranging between 0.3–3 microns and a characteristic core-shell structure. Within the sol-gel microcapsule structure a UV absorber core, constituting roughly 80% of the final product weight, is enclosed within a silica shell. These advanced sunscreen actives are then incorporated into a suitable cosmetic vehicle to achieve high Sun Protection Factors (SPF), while affording an improved safety profile, as the penetration of the UV absorbers is markedly reduced. 相似文献
We report results from a pioneering experiment to measure the g factors of isomeric states of neutron-rich nuclei around 68Ni, far from the valley of β stability.For the first time, the time-dependent perturbed angular distribution method was applied in combination with the heavy-ion-γ correlation technique to study g factors of spin-aligned isomers produced in a projectile fragmentation reaction and mass-separated. Some technical aspects are discussed and illustrated with preliminary results. 相似文献