The application of jet fuel in gas turbines and diesel engines adheres to the Army’s single-fuel forward policy, streamlining supply chains. To ensure precise engine combustion numerical studies, surrogate fuels mechanisms should faithfully replicate real properties traits. In this work, a new four-component containing 39.05% n-dodecane/21.79% isocetane/11.49% decalin/27.67% toluene by mole fra...

ing exogenous nucleotides into mammalian cells is critical for both basic sciences and clinical applications, such as gene therapy. Among various methods for gene transfection, lipofection using cationic liposomes is considered to be a promising way to deliver a foreign gene to target cells. Although many kinds of cationic liposomes have been developed for lipofection, further studies are still...

The realization of biofuels and chemicals requires the development highly active selective catalysts, which are resistant to deactivation. A conventional ZSM-5 (SiO2/Al2O3 = 30) was modified with 0.2 M NaOH generate a mesoporous zeolite support. parent zeolite, mic-ZSM-5, hie-ZSM-5, silica support, SiO2, were impregnated 5% nickel characterized using X-ray powder diffraction (XRD), Brunauer–Emm...

contain 5.1 g. of 3-ethylpentane by vapor phase chromatography. The above material was purified by shaking with potassium permanganate solution followed by vapor phase chromatography ($6~ 1.3929). Final purification was effected by dissolving it in 10 ml. of acetic acid and adding solution of sodium dichromate and perchloric acid in 90% acetic acid until the orange color persisted. Water was ad...

Tetrocarcin A (TCA), produced by Micromonospora chalcea NRRL 11289, is a spirotetronate antibiotic with potent antitumor activity and versatile modes of action. In this study, the biosynthetic gene cluster of TCA was cloned and localized to a 108-kb contiguous DNA region. In silico sequence analysis revealed 36 putative genes that constitute this cluster (including 11 for unusual sugar biosynth...

We quantify and model the deposition and crystallization kinetics of initially dilute colloidal spheres due to application of a steady, direct current electric field in the thin gap between parallel electrodes. The system studied is poly(12-hydroxystearic acid) (PHSA)-stabilized poly(methyl methacrylate) (PMMA) spheres dispersed in a mixture of cyclohexylbromide (CHB), decalin, and a low concen...

The kinetics of thermal desorption and displacement of self-assembled monolayers (SAMs) on gold derived from the adsorption of 2,2-dipentadecylpropane-1,3-dithiol (d-C17, [CH3(CH2)14]2C[CH2SH]2), 2-pentadecylpropane-1,3-dithiol (m-C17, CH3(CH2)14CH[CH2SH]2), and heptadecanethiol (n-C17, CH3(CH2)16SH) were explored. The kinetics were monitored by optical ellipsometry, contact angle goniometry, a...

Derivatives of bile acids with substituents in Ring C have been described in the preceding papers of this series (l-6). It is the purpose of this paper to assign the probable stereochemical configurations for these compounds. As desoxycholic acid (I)l is a convenient reference compound, it will first be necessary to discuss briefly the spatial arrangement of certain portions of this bile acid. ...

The Octant Rule1 provides a theoretical basis for the study of optical rotatory dispersion curves of ketones. The application of this rule to extensive collections of data for cyclohexanone types from our two laboratories has been described elsewhere.2 3 Among the hundreds of curves recorded, a few stand out by reason of their unusually large amplitudes (positive or negative), which cannot be r...

The aromatic rings of polystyrene (PS) were hydrogenated in decahydronaphthalene (DHN) expanded with supercritical carbon dioxide (scCO2). Conducting the hydrogenation in scCO2-DHN offers the benefits of improved transport properties, specifically lower solution viscosity and a higher PS diffusion coefficient. Various Pd catalysts are effective for hydrogenating the aromatic rings of PS at temp...