Cation-templated cyanometallate-based supramolecular rectangular cage compounds showing dielectric transitions

2017 ◽  
Vol 4 (8) ◽  
pp. 1304-1310 ◽  
Author(s):  
Yu-Ling Liu ◽  
Wen Zhang
Keyword(s):  
Monovalent Cation ◽  
Cage Compounds ◽  
Thermal Vibrations

Relatively small displacements or thermal vibrations of the polar guests in Cd(ii)–Co(iii) cyanometallate frameworks A2{H(CdCl2)[Co(CN)6]} (A = monovalent cation) induce dielectric transitions and relaxations.

High-angle electron scattering from amorphous silicon

1995 ◽  
Vol 53 ◽  
pp. 162-163
Author(s):  
M. Libera ◽  
J.A. Ott ◽  
K. Siangchaew ◽  
L. Tsung
Keyword(s):  
Electron Scattering ◽  
Amorphous Material ◽  
Structural Defects ◽  
Constant Thickness ◽  
High Angle ◽  
Fast Electrons ◽  
Angle Scattering ◽  
Stem Image ◽  
Amorphous Si ◽  
Thermal Vibrations

Channeling occurs when fast electrons follow atomic strings in a crystal where there is a minimum in the potential energy (1). Channeling has a strong effect on high-angle scattering. Deviations in atomic position along a channel due to structural defects or thermal vibrations increase the probability of scattering (2-5). Since there are no extended channels in an amorphous material the question arises: for a given material with constant thickness, will the high-angle scattering be higher from a crystal or a glass?Figure la shows a HAADF STEM image collected using a Philips CM20 FEG TEM/STEM with inner and outer collection angles of 35mrad and lOOmrad. The specimen (6) was a cross section of singlecrystal Si containing: amorphous Si (region A), defective Si containing many stacking faults (B), two coherent Ge layers (CI; C2), and a contamination layer (D). CBED patterns (fig. lb), PEELS spectra, and HAADF signals (fig. lc) were collected at 106K and 300K along the indicated line.

An Expedient Synthesis and Screening for Antiacetylcholinesterase Activity of Piperidine Embedded Novel Pentacyclic Cage Compounds

2014 ◽  
Vol 10 (2) ◽  
pp. 228-236 ◽  
Author(s):  
Raju Kumar ◽  
Abdulrahman Almansour ◽  
Natarajan Arumugam ◽  
Hasnah Osman ◽  
Mohamed Ali ◽  
...  
Keyword(s):  
Cage Compounds

scholarly journals Including Thermal Vibrations and Bonding in HAADF-STEM Image Simulation

2014 ◽  
Vol 20 (S3) ◽  
pp. 154-155 ◽  
Author(s):  
Michael Odlyzko ◽  
K. Andre Mkhoyan
Keyword(s):  
Image Simulation ◽  
Stem Image ◽  
Thermal Vibrations

scholarly journals TRPM4 in Cancer—A New Potential Drug Target

Biomolecules ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 229
Author(s):  
Anna Borgström ◽  
Christine Peinelt ◽  
Paulina Stokłosa
Keyword(s):  
Anticancer Drug ◽  
Drug Target ◽  
Transient Receptor Potential ◽  
Human Cancer ◽  
Receptor Potential ◽  
B Cell Lymphoma ◽  
Underlying Mechanism ◽  
Monovalent Cation ◽  
Transient Receptor Potential Melastatin ◽  
And Migration

Transient receptor potential melastatin 4 (TRPM4) is widely expressed in various organs and associated with cardiovascular and immune diseases. Lately, the interest in studies on TRPM4 in cancer has increased. Thus far, TRPM4 has been investigated in diffuse large B-cell lymphoma, prostate, colorectal, liver, breast, urinary bladder, cervical, and endometrial cancer. In several types of cancer TRPM4 is overexpressed and contributes to cancer hallmark functions such as increased proliferation and migration and cell cycle shift. Hence, TRPM4 is a potential prognostic cancer marker and a promising anticancer drug target candidate. Currently, the underlying mechanism by which TRPM4 contributes to cancer hallmark functions is under investigation. TRPM4 is a Ca2+-activated monovalent cation channel, and its ion conductivity can decrease intracellular Ca2+ signaling. Furthermore, TRPM4 can interact with different partner proteins. However, the lack of potent and specific TRPM4 inhibitors has delayed the investigations of TRPM4. In this review, we summarize the potential mechanisms of action and discuss new small molecule TRPM4 inhibitors, as well as the TRPM4 antibody, M4P. Additionally, we provide an overview of TRPM4 in human cancer and discuss TRPM4 as a diagnostic marker and anticancer drug target.

scholarly journals Double Porphyrin Cage Compounds

2020 ◽  
Vol 2020 (45) ◽  
pp. 7087-7100
Author(s):  
Kathleen Stout ◽  
Theo P. J. Peters ◽  
Mathijs F. J. Mabesoone ◽  
Fabian L. L. Visschers ◽  
Eline M. Meijer ◽  
...  
Keyword(s):  
Cage Compounds

scholarly journals Specific Ion Effects on the Behavior of Mixtures of Sodium Iso-Butyl Xanthate and Sodium Diethyl Dithiophosphate during the Flotation of a Cu-Ni-PGM Ore: Effects of CaCl2 and NaCl

2021 ◽  
Vol 6 (1) ◽  
pp. 22
Author(s):  
Malibongwe S. Manono ◽  
Katlego Matibidi ◽  
Kirsten C. Corin ◽  
Catherine K. Thubakgale ◽  
Iyiola O. Otunniyi ◽  
...  
Keyword(s):  
Froth Flotation ◽  
Monovalent Cation ◽  
Process Water ◽  
Polyvalent Cation ◽  
Flotation Reagents ◽  
Sulfide Flotation ◽  
Froth Stability ◽  
Ion Effects ◽  
The Relationship ◽  
Diethyl Dithiophosphate

Inorganic electrolytes present in the process water used during froth flotation may have both beneficial and detrimental effects. These effects are said to be ion specific, as some ions may result in enhanced froth stability, increased mineral recoveries and decreased concentrate grades, while others may bring the opposite effects. Onsite process water quality variations have intensified the need to understand the relationship between inorganic electrolytes and flotation reagents on flotation performance. The use of mixtures of thiol collectors in sulfide flotation is a common practice across the globe; however, very few investigations have considered these in process waters of varying compositions. This study considers the effect of common cations, Na+ and Ca2+, in process water on the behavior of mixtures of thiol collectors. Single-salt solutions of NaCl and CaCl2 at an ionic strength of 0.0213 mol·dm−3 were used to investigate the behavior of mixtures of two thiol collectors. These were carefully selected to understand how mixtures of thiol collectors behave in the presence of a monovalent cation versus a polyvalent cation. Bench-scale froth flotation tests were conducted using a Cu-Ni-PGM ore from the Merensky Reef. The results have shown that the divalent cation, Ca2+, resulted in higher %Cu and %Ni recoveries at all collector mixtures compared to the monovalent cation, Na+. The concentrate grades were, however, slightly compromised, as slightly more gangue reported to the concentrate in the presence of Ca2+. This behavior is attributed to the effect of polyvalent cations on bubble coalescence and froth stability.

TRPC1, TRPC3, and TRPC4 in Rat Orofacial Structures

2017 ◽  
Vol 204 (5-6) ◽  
pp. 293-303 ◽  
Author(s):  
Masatoshi Fujita ◽  
Tadasu Sato ◽  
Takehiro Yajima ◽  
Eiji Masaki ◽  
Hiroyuki Ichikawa
Keyword(s):  
Transient Receptor Potential ◽  
Sympathetic Neurons ◽  
Receptor Potential ◽  
Monovalent Cation ◽  
Calcitonin Gene ◽  
Cervical Ganglion ◽  
Parasympathetic Neurons ◽  
Transient Receptor ◽  
And Function ◽  
And Control

TRPC (transient receptor potential cation channel subfamily C) members are nonselective monovalent cation channels and control Ca2+ inflow. In this study, immunohistochemistry for TRPC1, TRPC3, and TRPC4 was performed on rat oral and craniofacial structures to elucidate their distribution and function in the peripheries. In the trigeminal ganglion (TG), 56.1, 84.1, and 68.3% of sensory neurons were immunoreactive (IR) for TRPC1, TRPC3, and TRPC4, respectively. A double immunofluorescence method revealed that small to medium-sized TG neurons co-expressed TRPCs and calcitonin gene-related peptide. In the superior cervical ganglion, all sympathetic neurons showed TRPC1 and TRPC3 immunoreactivity. Parasympathetic neurons in the submandibular ganglion, tongue, and parotid gland were TRPC1, TRPC3, and TRPC4 IR. Gustatory and olfactory cells were also IR for TRPC1, TRPC3, and/or TRPC4. In the musculature, motor endplates expressed TRPC1 and TRPC4 immunoreactivity. It is likely that TRPCs are associated with sensory, autonomic, and motor functions in oral and craniofacial structures.

LiEC(SiMe3)3 (E = Se, Te) as a new donor of chalcogen atoms for the generation of binary [(RxGey)Ez] cage compounds with unique structural features

2021 ◽  
Vol 50 (7) ◽  
pp. 2663-2670
Author(s):  
Tanja Kunz ◽  
Orhan Şahin ◽  
Claudio Schrenk ◽  
Andreas Schnepf
Keyword(s):  
Structural Features ◽  
Cage Compounds

LiEC(SiMe3)3 (E = Se, Te) acts as a donor of chalcogen atoms and as a substituent to give binary [(RxGey)Ez] cage compounds by the reaction with GeCl2·dioxane. These cage compounds show unique structural features within Ge/E cage compounds.

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