OBJECTIVE To evaluate trends and reproductive outcomes of gestational surrogacy in the United States. DESIGN Retrospective cohort study. SETTING Infertility clinics. PATIENT(S) IVF cycles transferring at least one embryo. INTERVENTION(S) Use of a gestational carrier. MAIN OUTCOME MEASURE(S) Trends in gestational carrier cycles during 1999-2013, overall and for non-U.S. residents; repr...

the carrier facilitated transport of lithium picrate was studied using a series of non-cyclic polyethers containing different end groups and chain lengths through bulk liquid membrane (blm) and supported liquid membrane (slm) systems. the various membrane supports used are viz. ptfe, cellulose nitrate, and dialysis membrane and onion membrane. the amount of li+ transported depends upon the stru...

the radioisotope 67ga (t 1/2 = 78 h) in extensively used as single photon marker for detecting the presence of malignancy and the diagnosis of inflammatory diseases. the high tumor specificity of carrier-free 67ga make it one of the most interesting radionuclides in nuclear medicine for in vivo scanning studies.67ga is a cyclotron produced radioisotopes and is one of the radiopharmaceuticals wh...

We report a method to promote photoluminescence emission in graphene materials by enhancing carrier scattering instead of directly modifying band structure in multilayer reduced graphene oxide (rGO) nanospheres. We intentionally curl graphene layers to form nanospheres by reducing graphene oxide with spherical polymer templates to manipulate the carrier scattering. These nanospheres produce hot...

Carrier phase positioning is a reliable approach that offers better accuracies than pseudorange-based positioning. It relies on carrier phase measurements that originate from the carrier tracking loop. The performance of this loop dictates the quality of the phase measurements and consequently the quality of the final positioning solution. Carrier phase jitter, which is the metric of carrier lo...

Saccharopolyspora erythraea acyl-carrier protein, highly expressed from a T7-based expression plasmid in Escherichia coli, can be selectively released from the cells in near-quantitative yield by a single cycle of freezing and thawing in a neutral buffer. Electrospray mass spectrometry was used to confirm that the recombinant S. erythraea acyl-carrier protein over-expressed in E. coli is presen...

A molecular dynamics simulation of vapor phase nucleation has been performed with 40,000 Lennard-Jones particles for the target gas and 0-160,000 particles for the carrier gas. Three carrier gas models are adopted, including a soft-core model, a Lennard-Jones model, and a modified Lennard-Jones model in which the attractive interaction can be adjusted. The effect of the carrier-gas pressure is ...