OBJECTIVE To compare the risk of ectopic pregnancy (EP) after embryo transfer on day 3(D3-ET) and day 5(D5-ET). DESIGN Meta-analysis. PATIENTS Women with pregnancy resulting from in vitro undergoing in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). RESULT(S) Twenty-two studies were identified through research conducted using the PubMed, Embase, and Cochrane database...

Zipper, Medel & Prager (1969) reported a depressive effect on the implantation rate in the rabbit with intrauterine copper wires. They postulated that the effect of the copper IUD was local rather than systemic because only minute quantities of copper were necessary to produce the antifertility effect (Zipper, Tatum, Pastene, Medel & Rivera, 1969). The exact mechanism of the action of copper ha...

This paper describes how to response of oscilloscopes, especially at low fre MHz to 1 GHz. The method uses the phas standard mixer calibrated by three-mixer reference phase. We describe basic principles obtained using a balanced mixer and a real-tim GHz BW).

Denice M. Hodgson, Atta Behfar, Leonid V. Zingman, Garvan C. Kane, Carmen Perez-Terzic, Alexey E. Alekseev, Michel Pucéat, and Andre Terzic Division of Cardiovascular Diseases, Departments of Medicine, Molecular Pharmacology, and Experimental Therapeutics, and Physical Medicine and Rehabilitation, Mayo Clinic College of Medicine, Rochester, Minnesota 55905; and Centre de Recherches de Biochimie...

Polydimethylsiloxane (PDMS) elastomer is used in a wide range of biomaterial applications including microfluidics, cell culture substrates, flexible electronics, and medical devices. However, it has proved challenging to 3D print PDMS in complex structures due to its low elastic modulus and need for support during the printing process. Here we demonstrate the 3D printing of hydrophobic PDMS pre...

4-Hydroxyphenylacetate 3-hydroxylase (HpaB and HpaC) of Escherichia coli W has been reported as a two-component flavin adenine dinucleotide (FAD)-dependent monooxygenase that attacks a broad spectrum of phenolic compounds. However, the function of each component in catalysis is unclear. The large component (HpaB) was demonstrated here to be a reduced FAD (FADH(2))-utilizing monooxygenase. When ...

spectral decomposition is a powerful tool for analysis of seismic data. fourier transform determines the frequency contents of a signal. but for analysis of non-stationary signals, 1-d transform to frequency domain is not sufficient. in early years, transforming of seismic traces into time and frequency domain was done via windowed fourier transform, called a short time fourier transform (stft)...

ated at the level of regulated gene rearrangement—an individual B cell makes only one productive (in-frame) gene rearrangement at each locus, the second allele being excluded from expression. One of the outstanding questions in immunology is how productive V(D)J re-Several types of evidence support the hypothesis that V(D)J recombinase activity is regulated by the accessibility of rearranging l...

Ataxia-telangiectasia (A-T) is a multisystem hereditary disease fea turing neurodegeneration, immunodeficiency, extreme cancer proneness, chromosomal instability, and radiosensitivity. A-T is found in many ethnic groups, and is genetically heterogeneous: four complementation groups have been identified in A-T so far. Attempts to isolate the A-T gene are based in part on gene transfer experiment...

but not DA reuptake, produce neither significant reinforcement in animal models nor euphoria in humans. Laboratory of Molecular and Developmental Neuroscience Moreover, antidepressants do not produce dependence in humans even with very long-term use. In addition, Massachusetts General Hospital Harvard Medical School lesioning of DA terminals within the NAc or full pharmacological blockade of DA...