نتایج جستجو برای: al3
تعداد نتایج: 1330 فیلتر نتایج به سال:
The morphology of nucleus and nucleolus is powerful indicator of physiological and pathological conditions. The specific staining of nucleolus recently gained much attention due to the limited and expensive availability of the only existing stain "SYTO RNA-Select". Here, a new multifunctional salen type ligand (L1) and its Al3+ complex (1) are designed and synthesized. L1 acts as a chemosensor ...
The combination of new containerless sample and high intensity synchrotron source technologies has enabled the X-ray diffraction pattern from a molten oxide (Al2O3) to be determined for the first time (Ansell et al. Phys. ReV. Lett. 1997, 78, 464).1 Here we show that the liquid-state diffraction pattern, predicted from a computer simulation with a potential derived from the ground-state crystal...
Highly b-oriented zeolite ZSM-5 films are critical for applications in catalysis and separations and may serve as models to study diffusion and catalytic properties in single zeolite channels. However, the introduction of catalytically active Al3+ usually disrupts the orientation of zeolite films. Herein, using structure-directing agents with hydroxy groups, we demonstrate a new method to prepa...
The influence of some inorganic (K+, Mg2+, and Al3+) and organic CnH(2n+1)SO3-, n = 12 and 14) ions was studied on the hemolysis of erythrocytes (RBC) caused by organolead compounds (tripropyllead--TPL, tributyllead--TBL and triphenyllead--TPhL chlorides). It was found that sulfonate anions increased the hemolytic effect induced by triorganoleads, while inorganic cations protected RBC against t...
A reversible photo-driven sensor for aluminum ions based on photochromicspiropyran was reported with rapid response time. The detection of aluminum wasperformed via the chelation of aluminum ions with the merocyanine form (MC) ofphotochromic spiropyran. ¹H NMR studies confirmed the conversation from the MC forminto the Al3+ -MC form. Addition of aluminum ions to the spiropyran (SP) in a MeCN/H₂...
The age-hardening response at 300 C of Al–0.06Sc–0.02RE (at.%, with RE = Tb, Ho, Tm or Lu) is found to be similar to that of binary Al–0.08Sc (at.%), except that a shorter incubation period for hardening is observed, which is associated with nanoscale RE-rich Al3(RE1 xScx) precipitates. In addition, Al–0.06Sc–0.02Tb (at.%) has a much lower peak microhardness than that of Al–0.08Sc (at.%) due to...
This study aimed to investigate the effect of six chloride salts on butterfly pea flower extract’s anthocyanins stability. The were NaCl, KCl, CaCl2, MgCl2, FeCl3, and AlCl3. samples analyzed using a UV-Vis spectrophotometer observe color degradation change in hue during storage. extraction was done modified method, solutions stored dark vials at room temperature. kinetics benzene derivatives, ...
La crianza de ganado bovino es una actividad importante en Perú, con sistemas producción diferenciados por el propósito, condiciones edafoclimáticas y prácticas manejo las pasturas. En la finca Ruiz, distrito Codo del Pozuzo (Huánuco, Perú), se evaluó efecto pastoreo varios años sobre calidad suelo a través indicadores físicos (textura resistencia penetración), químicos (pH, MO, N, P, K+, Ca2+,...
The solvation of Al3+ and its hydrolyzed species in water clusters has been studied by means of ab initio molecular dynamics simulations. The hexa-hydrate Al(H2O) 3+ 6 ion formed a stable complex in the finite temperature cluster simulation of one aluminum ion and 16 waters. The average dipole moment of strongly polarized hydrated water molecules in the first solvation shell of Al(H2O) 3+ 6 was...
The liquid phase esterification of phenyl acetic acid with p-cresol over different metal cation exchanged montmorillonite nanoclays yields p-cresyl phenyl acetate. Different metal cation exchanged montmorillonite nanoclays (M n+ = Al3+, Zn2+, Mn2+, Fe3+, Cu2+) were prepared and the catalytic activity was studied. The esterification reaction was conducted by varying molar ratio of the reactants,...
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