نتایج جستجو برای: polymorph

تعداد نتایج: 2081  

Ali Reza Talaei Amir Mousavi, Behnam Naserian Khiabani Mohammad Mirzaii Mohammad Reza Naghavi, Seied Mehdi Miri

Genetic diversity amongst 21 induced mutant clones tolerant to salinity along with one non-irradiated sensitive clone of banana (Musa acuminata cv. Dwarf Cavendish (AAA)) were studied using morphological and random amplified polymorphic DNA (RAPD) markers. Out of the 30 phenotypic indices screened, 23 were polymorph and two traits, leaf habit and blotches color, were differentiated by non-irrad...

Journal: :Cement and Concrete Research 2021

The two most common polymorphs in industrial alite, $M_1$ and $M_3$, were characterized at the molecular scale. Different methods employed discussed to assess mechanical properties specific heat of both polymorphs. calculated homogenized elastic moduli found good agreement with experimental measurements. A comparative analysis spacial Young's modulus reveal isotropic anisotropic distribution fo...

Journal: :Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques 2010
Cheng-Hung Hsu Wen-Ting Ke Shan-Yang Lin

PURPOSE The aim of this study was to determine the progressive processes of polymorphic transformation of different gabapentin (GBP) polymorphs by using hot-stage Fourier transform infrared (FTIR) microspectroscopy. METHODS Four polymorphs of GBP were previously prepared and then identified by differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, FTIR microspectroscopy and...

2015
Florian Reichmann Evelin Painsipp Peter Holzer Daniel Kummer Elisabeth Bock Gerd Leitinger

BACKGROUND The numerical density of synapses and their ultrastructural features are best assessed with electron microscopy. Counting is done within counting frames placed on a pair of sections (disector technique). But this requires that the thin sections are taken from comparable brain regions and the disectors are placed in a uniform random fashion. Small brain areas like the polymorph layer ...

2015
Yee Seng Tan Chien Ing Yeo Edward R. T. Tiekink

The title compound, [Fe(C17H14PS)2], is a second monoclinic polymorph (P21/c, with Z' = 1) of the previously reported monoclinic (C2/c, with Z' = 1/2) form [Fang et al. (1995 ▸). Polyhedron, 14, 2403-2409]. In the new form, the S atoms lie to the same side of the mol-ecule with the pseudo S-P⋯P-S torsion angle being -53.09 (3)°. By contrast to this almost syn disposition, in the C2/c polymorph,...

Journal: :Acta crystallographica. Section B, Structural science 2007
Peter T A Galek László Fábián W D Samuel Motherwell Frank H Allen Neil Feeder

A new method is presented to predict which donors and acceptors form hydrogen bonds in a crystal structure, based on the statistical analysis of hydrogen bonds in the Cambridge Structural Database (CSD). The method is named the logit hydrogen-bonding propensity (LHP) model. The approach has a potential application in identifying both likely and unusual hydrogen bonding, which can help to ration...

2012
Abdullah M. Asiri Hassan M. Faidallah Khalid A. Alamry Seik Weng Ng Edward R. T. Tiekink

The title compound, C(23)H(17)N(3)O, has been previously described in a monoclinic P2(1)/c polymorph with Z = 4 [Asiri, Al-Youbi, Faidallah, Ng & Tiekink (2011). Acta Cryst. E67, o2449]. In the new monoclinic P2(1)/n form, with Z = 8, there are two independent mol-ecules, A and B, in the asymmetric unit. In both mol-ecules, the cyclo-hexa-1,3-diene ring has a screw-boat conformation, whereas it...

Journal: :Applied Catalysis A-general 2021

Nanodispersed MoS2 and CoMoS2 materials containing metastable 1T phase have been prepared by solvothermal technique, characterized with several physico-chemical methods evaluated in the electrocatalytic hydrogen evolution (HER), thiophene hydrodesulfurization (HDS) 1-pentene hydrogenation (HYD) reactions. The role of different factors stabilization has studied. Stability polymorph upon heating ...

Journal: :Chemical communications 2011
Jean-Baptiste Arlin Louise S Price Sarah L Price Alastair J Florence

A computationally assisted approach has enabled the first catemeric polymorph of carbamazepine (form V) to be selectively formed by templating the growth of carbamazepine from the vapour phase onto the surface of a crystal of dihydrocarbamazepine form II.

Journal: :Chemical communications 2007
B R Sreekanth Peddy Vishweshwar K Vyas

Co-crystals of 4-hydroxybenzoic acid and 2,3,5,6-tetramethylpyrazine (2 : 1) exhibit the first supramolecular synthon polymorphism in a co-crystal; metastable anti-hierarchic polymorph I converts to stable hierarchic form II.

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