SummaryThe placental transfer of maternal IgG is critical for infant protection against infectious pathogens. However, factors that modulate the placental transfer of IgG remain largely undefined. HIV-infected women have impaired placental IgG transfer, presenting a unique “disruption model” t...

The rate coefficients of H abstraction and OH addition reactions of 2,4,4-trimethyl-1-pentene with OH were determined by both canonical variational transition state theory and conventional transition state theory. The potential energy surfaces were calculated at CCSD(T)/6-311++G(d, p)//BHANDHLYP...

Experiments of ignition delay times on 2,4,4-trimethyl-1-pentene were performed behind reflected shock waves at pressure ranging from 2 atm to 10 atm, at equivalence ratios from 0.5 to 2.0, and with fuel concentrations of 0.5%, 0.75% and 1%. All ignition delay times follow the Arrhenius rule, an...

Excess enthalpy (HE) for the binary system of (methanol + 2,4,4-trimethyl-1-pentene) (TMP-1) is reported at T = 298.15 K and 101 kPa. (Liquid + liquid) equilibrium (LLE) for the same system is measured at atmospheric pressure (101 kPa). LLE for ternary system of (water + methanol + 2,4,4-trimeth...

The laminar flame speeds for 2,4,4-trimethyl-1-pentene/air mixtures have been measured in a constant volume combustion bomb, at initial temperatures of 400 and 450 K, initial pressures of 0.1 and 0.3 MPa, and equivalence ratios from 0.6 to 1.5. Both the linear and nonlinear models are used for e...

Laminar flame speeds of 2,4,4-trimethyl-1-pentene are investigated at equivalence ratios of 0.7–1.6, initial temperatures of 298–453 K and initial pressures of 0.1–0.5 MPa. The comparison between 2,4,4-trimethyl-1-pentene and iso-octane is also performed. Results show that 2,4,4-trimethyl-1-p...

The negative ion mode ESI mass spectral analysis of antimony(III)-D- and -L-tartrate (“tartar emetic”), in association with leucine enantiomeric isotopomers, revealed remarkable proton-assisted enantioselective molecular recognition phenomena. The current study infers that recognition of amino...

ObjectiveEnergy metabolism and insulin action follow a diurnal rhythm. It is therefore important that investigations into dysregulation of these pathways are relevant to the physiology of this diurnal rhythm.

Insulin resistance (IR) and β-cell dysfunction are key pathological features of type 2 diabetes mellitus, the aim of this study was to investigate the role of proinsulin level and proinsulin/insulin ratio in early prediction of beta cell dysfunction and insulin resistance in obese Egyptian adol...

Patients with Diabetic nephropathy (DN) have an increase in cardiovascular mortality, and since IR may be a contributing factor. Therefore, the aim of this study was to assess the role of pro insulin/insulin ratio as a predictor of insulin resistance in patients with diabetic nephropathy

Relative rate techniques were used to determine k(Cl + CF3CFCFCF3) = (7.27 ± 0.88) × 10−12, k(Cl + CF3CF2CFCF2) = (1.79 ± 0.41) × 10−11, k(OH + CF3CFCFCF3) = (4.82 ± 1.15) × 10−13, and k(OH + CF3CF2CFCF2) = (1.94 ± 0.27) × 10−12 cm3 molecule−1 s−1 in 700 Torr of air or N2 diluent at 296 ...

In this study, we synthesized a novel metal flavonoid complex and investigated its effects on the non-small cell lung cancer cell lines, A549 and toxicity on the human dermal fibroblast cell lines, HDFa. 1H, 13C NMR, single crystal X-ray diffraction and elemental micro analysis (C,H,N,S/O) were ...

Synthesis of Zn(II) and Ru(II) complexes were reported by using N4-macrocyclic Schiff base ligands under solvothermal conditions. The newly synthesized Zn(II) and Ru(II) complexes have been characterized by various physico-chemical techniques such as elemental analysis, molar conductance, HRMS, ...

A facile reflux approach was employed in the design of novel complexes using ruthenium(II) and quercetin for enhanced anticancer applications. The designed metal-based flavonoid complex was thoroughly characterized by employing powder XRD, 1H, 13C NMR, elemental analysis (C, H, N, S, O), FT-IR, ...

Infrared and Raman spectra have been obtained for 1,4 cis-dibromobutene-2 in the liquid, amorphous and crystalline phases. Normal coordinate calculations have been performed for several model conformations. These data show the SCS and SCS' conformations as the more stable isomers. The two i...

The positional isomerization 1,4-dichloro-2-butene ⇆ 3,4-dichloro-1-butene is strongly catalyzed by soluble iron complexes. Kinetic data and other observations point to a mechanism involving π-allyliron intermediate.

The teratogenic potential of 1,4-dichlorobutene-2 (1,4-DCB) was evaluated in the rat. From inhalation toxicity studies, particularly ongoing lifetime studies, exposure levels of 0, 0.5, and 5.0 ppm were selected. Rats were exposed for 6 hr per day on Days 6 through 15 of gestation (sperm-positiv...

The formation of mixed-valence copper complexes with dialkyl sulfides or triphenylphosphine in the catalytic isomerization of dichlorobutenes was investigated kinetically and spectroscopically (UV–Vis, IR, EPR, NMR). These species were prepared both starting from Cu(I) and Cu(II) compounds. The...

Sizes of micelles and compositions of aggregates in the aqueous solutions of the nonionic surfactant oxyethylated monoalkyl phenol (neonol AF9-10) were determined by NMR spectroscopy, NMR diffusometry and dynamic light scattering in a wide range of tem- peratures near the cloud point. The cloud ...

Diffusion coefficients, dielectric relaxation times and refraction coefficients were measured, and activation energies of translational and rotational mobilities were determined for a series of oxyethylated phenols (neonols AF9-n) p-C9H19C6H4-O(CH2CH2O)nH, n = 4, 6, 8, 9, 10, 12, at different te...