نتایج جستجو برای: polymorph
تعداد نتایج: 2081 فیلتر نتایج به سال:
We report herein a theoretical study of the high-pressure compressibility Cd3V2O8, Zn3V2O8, Mg3V2O8, and Ni3V2O8. For we also present its structural stability. Computer simulations were performed by means first-principles methods using CRYSTAL program. In found previously unreported polymorph which is thermodynamically more stable than already known polymorph. determined all compounds evaluated...
Predicting the conditions in which a compound adopts a metastable structure when it crystallizes out of solution is an unsolved and fundamental problem in materials synthesis, and one which, if understood and harnessed, could enable the rational design of synthesis pathways toward or away from metastable structures. Crystallization of metastable phases is particularly accessible via low-tempera...
Iron(III) oxide shows a polymorphism, characteristic of existence of phases with the same chemical composition but distinct crystal structures and, hence, physical properties. Four crystalline phases of iron(III) oxide have previously been identified: α-Fe2O3 (hematite), β-Fe2O3, γ-Fe2O3 (maghemite), and ε-Fe2O3. All four iron(III) oxide phases easily undergo various phase transformations in re...
To determine the various factors influencing glycemic response to pioglitazone monotherapy in newly diagnosed Asian Indian T2DM patients. Thirty T2DM patients (age 53.23 +/- 8.067 yrs, M: F ratio 14:16) were treated with pioglitazone for at least 14 weeks. Relationship between its glucose lowering effect and following patient parameters was studied: BMI, W:H ratio, HOMA-R, HOMA-beta and Pro12Al...
Objective: Aim of this present study was to prepare and characterize the different polymorphs of Prulifloxacin using Powder X-Ray Diffraction analysis (PXRD), Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectrometry (FTIR) and dissolution studies. Methods: Polymorphs of Prulifloxacin were prepared by cooling crystallization method usin...
Surface character and membranolytic activity of rutile and anatase: two titanium dioxide polymorphs.
Biological studies of two titanium dioxide polymorphs, rutile and anatase, have produced conflicting results. Generally, the in vivo and in vitro methods used to evaluate pneumoconiotic dusts have shown the polymorphs to be inert, but occasionally both minerals have been reported to produce effects consistent with biologically active minerals. Many of these reports failed to specify which polym...
High-pressure structural studies of claudetite I reveal that it exhibits the lowest As coordination numbers despite being densest As2O3polymorph.
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