background: aggressive embryo and receptive endometrium are necessary for successful implantation. on this time endometrium transformates to receptive state, which permits embryonic implantation. studies about embryonic implantation and endometrial receptivity are always a hot spot in the field of reproductive medicine. objective: to investigate the expression pattern of meis1 during peri-impla...

Silica-based aerogels bearing a novel aminophosphonate-containing substituent were prepared. Pd2+ and Cu2+ ions introduced into aerogel matrix to form chelated complexes with aminophosphonate moiety. Both securely retain Me2+ after supercritical drying (SCD) in CO2. In silica matrix, Pd complex is reduced metallic treatment by gaseous H2 at 120 °C. lyogel can also be upon SCD isopropanol. Pd-co...

The ylide-functionalized diisopropyl phosphine (prYPhos) promotes Pd-catalyzed Suzuki-Miyaura couplings of aryl chlorides and bromides with arylboronic acids. Using Pd2(dba)3/prYPhos as the catalyst K2CO3 base, various (hetero)biaryls were synthesized in 45–98% yields at mild reaction conditions, tolerating sensitive functional groups steric hindrance. electron rich, sterically demanding ligand...

Synthesized [email protected] nanoparticles (NPs) were fully characterized by spectroscopic techniques and (scanning) transmission electron microscopy to resolve the presence of a Fe(OH)2-like phase. The different phases detected in core–shell nanostructure these NPs corroborated Mössbauer X-ray photoelectron spectroscopies. Metallic iron (Fe0), ferrous (FeII) hydroxide, magnetite (FeIII2FeIIO4...

Three periodic mesoporous materials, i.e., two organosilicas with either ethylene or phenylene bridges and one silica, have been used as supports for Pd nanoparticles. All Pd-supported samples (1.0 wt%) were prepared by the incipient wetness method and subsequently reduced in an H₂ stream at 200 °C. Both hydrogen chemisorption and temperature programmed reduction experiments revealed significan...

BACKGROUND Ultrasound (US) is a sensitive method for detecting joint/tendon inflammation in patients with rheumatoid arthritis (RA). Subclinical inflammation is often found in patients with RA in composite score remission. The purpose of the present study was to explore whether US of only the hands is sufficient to identify subclinical inflammation in patients with established RA in clinical re...

Aims: Gamma-glutamyl transferase (GGT), an enzyme present on the endothelium, is involved in the release of nitric oxide (NO) from S-nitrosoglutathione (GSNO) and in the GSNO-induced vasodilation. Endogenous GSNO is a physiological storage form of NO in tissues while exogenous GSNO is an interesting candidate for compensating for the decreased NO bioavailability occurring during cardiovascular ...

For a prime p and positive integers l < k < h < p with d = (h, k, l, p−1), we show that M , the number of simultaneous solutions x, y, z, w in Zp to xh + yh = zh + wh, xk + yk = zk + wk, xl + yl = zl + wl, satisfies M ≤ 3d(p− 1) + 25hkl(p− 1). When hkl = o(pd2) we obtain a precise asymptotic count on M . This leads to the new twisted exponential sum bound ∣∣∣∣∣ p−1 ∑ x=1 χ(x)e ∣∣∣∣∣ ≤ 3 4 d 1 2...

A catalyst composed of Pd2(dba)3 and (S)-Siphos-PE provides excellent results in Pd-catalyzed alkene carboamination reactions between aniline derivatives bearing pendant alkenes and aryl or alkenyl halides. These transformations generate tetrahydroquinolines and tetrahydroquinoxalines that contain quaternary carbon stereocenters with high levels of asymmetric induction. In addition this catalys...