An Investigation on the Role of the Nature of Sulfonate Ancillary Ligands on the Strength and Concentration Dependence of the Second-Order NLO Responses in CHCl3of Zn(II) Complexes with 4,4‘-trans-NC5H4CHCHC6H4NMe2and 4,4‘-trans,trans-NC5H4(CHCH)2C6H4NMe2

2005 ◽  
Vol 44 (7) ◽  
pp. 2437-2442 ◽  
Author(s):  
Francesca Tessore ◽  
Danika Locatelli ◽  
Stefania Righetto ◽  
Dominique Roberto ◽  
Renato Ugo ◽  
...  
Keyword(s):  
Concentration Dependence ◽  
Second Order ◽  
Ancillary Ligands

Synthesis and properties of a new second-order NLO chromophore containing the benzo[b]furan moiety for electro-optical materials

RSC Advances ◽  
2014 ◽  
Vol 4 (63) ◽  
pp. 33312-33318 ◽  
Author(s):  
Maolin Zhang ◽  
Guowei Deng ◽  
Airui Zhang ◽  
Huajun Xu ◽  
Heyan Huang ◽  
...  
Keyword(s):  
Electron Donor ◽  
Optical Materials ◽  
Furan Ring ◽  
Second Order ◽  
Donor Group ◽  
Nlo Chromophores ◽  
Furan Moiety

We have designed and synthesized a new chromophore having a 1,1,7,7-tetramethyljulolidine fused furan ring as the electron donor group to systematically investigate the role of the benzo[b]furan ring in NLO chromophores.

scholarly journals cAMP induces a rapid and reversible modification of the chemotactic receptor in Dictyostelium discoideum.

1985 ◽  
Vol 100 (3) ◽  
pp. 715-720 ◽  
Author(s):  
C Klein ◽  
J Lubs-Haukeness ◽  
S Simons
Keyword(s):  
Dictyostelium Discoideum ◽  
Concentration Dependence ◽  
Time Course ◽  
Camp Synthesis ◽  
Sds Page ◽  
Reversible Modification ◽  
Camp Receptor ◽  
Camp Stimulation ◽  
Stimulation Of

Stimulation, within 1 min after cAMP stimulation, of aggregation-competent Dictyostelium discoideum amebae was found to cause a rapid (within 1 min) modification of the cell's surface cAMP receptor. The modified receptor migrated on SDS PAGE as a 47,000-mol-wt protein, as opposed to a 45,000-mol-wt protein labeled on unstimulated cells. The length of time this modified receptor could be detected depended upon the strength of the cAMP stimulus: 3-4 min after treatment with 10(-7) M cAMP, cells no longer possessed the 47,000-mol-wt form of the cAMP receptor. Instead, the 45,000-mol-wt form was present. Stimulation of cells with 10(-5) M cAMP, however, resulted in the persistent (over 15 min) expression of the modified receptor. The time course, concentration dependence, and specificity of stimulus for this cAMP-induced shift in the cAMP receptor were found to parallel the cAMP-stimulated phosphorylation of a 47,000-mol-wt protein. In addition, both phenomena were shown to occur in the absence of endogenous cAMP synthesis. The possibility that the cAMP receptor is phosphorylated in response to cAMP stimulation, and the role of this event in cell desensitization, are discussed.

scholarly journals Relaxin induces rapid, transient vasodilation in the microcirculation of hamster skeletal muscle

2013 ◽  
Vol 218 (2) ◽  
pp. 179-191 ◽  
Author(s):  
Jordan M Willcox ◽  
Alastair J S Summerlee ◽  
Coral L Murrant
Keyword(s):  
Skeletal Muscle ◽  
Gap Junction ◽  
Fourth Order ◽  
Peripheral Resistance ◽  
Second Order ◽  
Systemic Resistance ◽  
Transient Nature ◽  
Channel Dependent ◽  
Synthase Inhibitor

Relaxin produces a sustained decrease in total peripheral resistance, but the effects of relaxin on skeletal muscle arterioles, an important contributor to systemic resistance, are unknown. Using the intact, blood-perfused hamster cremaster muscle preparationin situ, we tested the effects of relaxin on skeletal muscle arteriolar microvasculature by applying 10−10 M relaxin to second-, third- and fourth-order arterioles and capillaries. The mechanisms responsible for relaxin-induced dilations were explored by applying 10−10 M relaxin to second-order arterioles in the presence of 10−5 M N(G)-nitro-l-arginine methyl ester (l-NAME, nitric oxide (NO) synthase inhibitor), 10−5 M glibenclamide (GLIB, ATP-dependent potassium (K+) channel inhibitor), 10−3 M tetraethylammonium (TEA) or 10−7 M iberiotoxin (IBTX, calcium-associated K+channel inhibitor). Relaxin caused second- (peak change in diameter: 8.3±1.7 μm) and third (4.5±1.1 μm)-order arterioles to vasodilate transiently while fourth-order arterioles did not (0.01±0.04 μm). Relaxin-induced vasodilations were significantly inhibited byl-NAME, GLIB, TEA and IBTX. Relaxin stimulated capillaries to induce a vasodilation in upstream fourth-order arterioles (2.1±0.3 μm), indicating that relaxin can induce conducted responses vasodilation that travels through blood vessel walls via gap junctions. We confirmed gap junction involvement by showing that gap junction uncouplers (18-β-glycyrrhetinic acid (40×10−6 M) or 0.07% halothane) inhibited upstream vasodilations to localised relaxin stimulation of second-order arterioles. Therefore, relaxin produces transient NO- and K+channel-dependent vasodilations in skeletal muscle arterioles and stimulates capillaries to initiate conducted responses. The transient nature of the arteriolar dilation brings into question the role of skeletal muscle vascular beds in generating the sustained systemic haemodynamic effects induced by relaxin.

scholarly journals Second-Order Differential Operators in the Limit Circle Case

2021 ◽  
Author(s):  
Dmitri R. Yafaev ◽  
◽  
◽  
Keyword(s):  
Differential Equation ◽  
Differential Operators ◽  
Second Order ◽  
Spectral Measures ◽  
Limit Circle ◽  
Jacobi Operators ◽  
Limit Circle Case ◽  
Circle Case ◽  
Stieltjes Transforms

We consider symmetric second-order differential operators with real coefficients such that the corresponding differential equation is in the limit circle case at infinity. Our goal is to construct the theory of self-adjoint realizations of such operators by an analogy with the case of Jacobi operators. We introduce a new object, the quasiresolvent of the maximal operator, and use it to obtain a very explicit formula for the resolvents of all self-adjoint realizations. In particular, this yields a simple representation for the Cauchy-Stieltjes transforms of the spectral measures playing the role of the classical Nevanlinna formula in the theory of Jacobi operators.

On the role of second-order signals in the perceived direction of motion of Type II plaid patterns

1994 ◽  
Vol 34 (19) ◽  
pp. 2609-2612 ◽  
Author(s):  
Simon J. Cropper ◽  
David R. Badcock ◽  
Anthony Hayes
Keyword(s):  
Second Order ◽  
Type Ii

ChemInform Abstract: Cu-Catalyzed Ullmann-Type C-Heteroatom Bond Formation: The Key Role of Dinucleating Ancillary Ligands

ChemInform ◽  
2014 ◽  
Vol 45 (41) ◽  
pp. no-no
Author(s):  
Yongwen Jiang ◽  
Lanting Xu ◽  
Chenggang Zhou ◽  
Dawei Ma
Keyword(s):  
Bond Formation ◽  
Ancillary Ligands ◽  
Type C
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