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Memory-Effekt resorbierbarer Polymere

A. Patyk, B. Wollschlger, H. A. Merten

Oral and Maxillofacial Surgery > 2003 > 7 > 3

Hintergrund. Osteosynthesematerialien aus resorbierbaren Polymeren knnen aufgrund ihrer thermoplastischen Eigenschaften exakt an anatomische Strukturen angepasst werden. Jedoch bleibt die neue Form der Implantate nicht immer konstant, sondern kann sich nach Insertion der ursprnglichen Form wieder annhrend anpassen. In dieser Studie sollte ermittelt werden, wie ausgeprgt die Rckstellung der Implantate...

article

Memory-Effekt resorbierbarer Polymere

A. Patyk, B. Wollschläger, H. A. Merten

Oral and Maxillofacial Surgery > 2003 > 7 > 3 > 151-156

Hintergrund Osteosynthesematerialien aus resorbierbaren Polymeren können aufgrund ihrer thermoplastischen Eigenschaften exakt an anatomische Strukturen angepasst werden. Jedoch bleibt die neue Form der Implantate nicht immer konstant, sondern kann sich nach Insertion der ursprünglichen Form wieder annährend anpassen. In dieser Studie sollte ermittelt werden, wie ausgeprägt die Rückstellung der Implantate...

article

Noninvasive Fluorescence Imaging Through Scattering Media Beyond Memory Effect via Speckle Correlations

Yihang Huang, Wenjing Zhao, Aiping Zhai, Dong Wang

Laser & Photonics Reviews > 18 > 10 > n/a - n/a

The memory‐effect‐based speckle auto‐correlation method has gained significant attention for its ability to perform single‐shot noninvasive imaging through scattering media. Despite its advantages, however, not only its imaging field‐of‐view (FOV) is limited by the memory effect (ME), but also the relative positions and orientations of the reconstructed objects beyond ME are lost. Therefore, an approach...

article

Designing Advanced Amorphous/Nanocrystalline Alloys by Controlling the Energy State

Jun‐Qiang Wang, Li Jian Song, Jun Tao Huo, Meng Gao, more

Advanced Materials > 36 > 37 > n/a - n/a

Amorphous alloys, also known as metallic glasses, exhibit many advanced mechanical, physical, and chemical properties. Owing to the nonequilibrium nature, their energy states can vary over a wide range. However, the energy relaxation kinetics are very complex and composed of various types that are coupled with each other. This makes it challenging to control the energy state precisely and to study...

article

7‐2: Truly Bi‐stable Ferroelectric Liquid Crystal Based Modulators

Vigneshwaran Swaminathan, Valerii Vashchenko, Olena Vashchenko, Debjyoti Bhadra, more

SID Symposium Digest of Technical Papers > 55 > 1 > 49 - 52

We developed a novel method for achieving long‐term (>24 hours) true bi‐stability in helix‐free Ferroelectric Liquid Crystals (FLCs). Instead of employing asymmetric boundary conditions, traditionally used for achieving bi‐stability, we utilized symmetric boundary conditions and carefully optimized the anchoring conditions on both the top and bottom substrates using the photoalignment technology...

article

Pervasiveness of inorganic gunshot residue (IGSR) in handguns after cleaning and conditioning procedures

Matteo Donghi, Stefano Orsenigo, Luigi Manna, Antonella Profumo, more

Journal of Forensic Sciences > 69 > 3 > 1035 - 1044

Memory effect in firearms that is, the possibility for a weapon to release inorganic particles whose elemental composition depends on its entire shooting history, is responsible for most of the interpretation difficulties encountered in forensic gunshot residue analysis. The presence of residues chemically inconsistent with the last discharged round, the creation of particles having unusual elemental...

article

Exploring the interplay between memory effects and vesicle dynamics: A five‐dimensional analysis using rigid sphere models and mapping techniques

E. Azroul, G. Diki, M. Guedda

Studies in Applied Mathematics > 152 > 1 > 431 - 452

The memory effect in vesicle dynamics refers to the persistence of shape changes in lipid vesicles, a type of lipid bilayer membrane that mimics some features of real cells, particularly red blood cells (RBCs). To study this effect, a fractional rigid sphere model in five dimensions has been investigated, which maps the dynamics of a vesicle using the Caputo operator. This model provides new insights...

article

Effects of salt content on secondary formation of hydrates in complex systems

Xiangchun Jiang, Xiao Wang, Guiyang Ma, Zhuo Liang, more

The Canadian Journal of Chemical Engineering > 102 > 2 > 645 - 657

The phenomenon of ‘memory effect’ exists in the secondary generation of natural gas hydrates, which is mainly manifested in the fact that the induction time required for the nucleation of hydrates in the secondary generation of hydrates is significantly shorter than that of the primary generation, thus accelerating the generation of hydrates. At present, the research on the memory effect phenomenon...

article

Sequence‐Responsive Multifunctional Supramolecular Nanomicelles Act on the Regression of TNBC and Its Lung Metastasis via Synergic Pyroptosis‐Mediated Immune Activation

Xing Wang, Yuanhang Li, Kamran Hasrat, Li Yang, more

Small > 19 > 50 > n/a - n/a

Design of effective nanodrugs to modulate the immunosuppression of tumor microenvironment is a desirable approach to boost the clinical tumor‐therapeutic effect. Supramolecular nanomicelles PolyMN‐TO‐8, which are constructed by self‐assembling supramolecular host MTX‐MPEG2000, guest NPX‐2S, and TO‐8 through hydrophobic forces, have excellent stability and responsiveness to carboxylesterase and glutathione...

article

Inverse source problem with a posteriori boundary measurement for fractional diffusion equations

Jaan Janno, Yavar Kian

Mathematical Methods in the Applied Sciences > 46 > 14 > 15868 - 15882

In this article, we study inverse source problems for time‐fractional diffusion equations from a posteriori boundary measurement. Using the memory effect of these class of equations, we solve these inverse problems for several class of space‐ or time‐dependent source terms. We prove also the unique determination of a general class of space–time‐dependent separated variables source terms from such...

article

Conformational Kinetics in Chiral Poly(diphenylacetylene)s: A Dynamic P/M Memory Effect

Juan José Tarrío, Rafael Rodríguez, Jeanne Crassous, Emilio Quiñoá, more

Angewandte Chemie International Edition > 62 > 32 > n/a - n/a

Dynamic P/M (plus/minus) helical memory in chiral dissymmetric poly(diphenylacetylene)s (PDPA) is shown using a PDPA that bears the benzamide of (L)‐alanine methyl ester as pendant. For a single chiral polymer, it is possible to obtain either P or M helical structures in a specific solvent without the presence of any chiral external stimuli. To do that, it is necessary to combine the conformational...

article

Conformational Kinetics in Chiral Poly(diphenylacetylene)s: A Dynamic P/M Memory Effect

Juan José Tarrío, Rafael Rodríguez, Jeanne Crassous, Emilio Quiñoá, more

Angewandte Chemie > 135 > 32 > n/a - n/a

Dynamic P/M (plus/minus) helical memory in chiral dissymmetric poly(diphenylacetylene)s (PDPA) is shown using a PDPA that bears the benzamide of (L)‐alanine methyl ester as pendant. For a single chiral polymer, it is possible to obtain either P or M helical structures in a specific solvent without the presence of any chiral external stimuli. To do that, it is necessary to combine the conformational...

article

Synthesis and characterization of ternary layered double hydroxide containing zinc/copper/nickel and its PANI composite

Jigyasa Pathak, Poonam Singh

Polymer Composites > 43 > 11 > 7836 - 7844

In this study, ternary layered double hydroxide (LDH) containing Zn, Cu, and Ni was synthesized successfully using hydrolysis route. Upon calcination at a lower temperature of 350 °C, the synthesized lattice transformed into ZnO containing Cu and Ni that can be reformed back to the layered structure simply by a phenomenon known as ‘memory effect’. Furthermore, the synthesized lattice was used for...

article

Memory polynomial based support vector regression dynamic behavioral model for Doherty power amplifiers

Shijie Wang, Justin King, Jialin Cai

International Journal of Numerical Modelling: Electronic Networks, Devices... > 35 > 4 > n/a - n/a

In this article, a novel behavior modeling methodology for radio frequency (RF) power amplifiers (PAs) is introduced. The model is targeted towards strongly nonlinear Doherty power amplifiers (DPAs), combining the memory polynomial (MP) topology with the existing support vector regression (SVR) algorithm. The resulting novel model, is termed the memory polynomial support vector regression (MP‐SVR)...

article

Crystallization and Phase Transition of 1‐Butene Copolymers with Distinct Cyclic Co‐Units

Long Liu, Yahui Lou, Chunjing Qv, Zhe Ma, more

Chinese Journal of Chemistry > 40 > 12 > 1429 - 1436

The dimethylpyridylamidohafnium catalyst was used to synthesize 1‐butene/cyclohexene and 1‐butene/vinylcyclohexane random copolymers, which have extra six‐membered cyclic co‐units in main chain and side chain, respectively. For the obtained copolymers of different incorporations, the crystallization from amorphous melt and the solid phase transition from tetragonal to trigonal phases were investigated...

article

Indirect stabilization of coupled abstract evolution equations with memory: Different propagation speeds

Kun‐Peng Jin

Mathematical Methods in the Applied Sciences > 45 > 8 > 4451 - 4467

We consider the Cauchy problem for coupled second‐order evolution equations in a Hilbert space with indirect memory damping, which arises from the theory of viscoelasticity. Here, the coefficients of the main operators in the system are non‐equal (the case of different speeds of propagation). Under much weaker assumptions on memory kernels, we obtain a polynomial decay rate, whereas it is known that...

article

Digital predistortion based on sample selection with memory effect

Guichen Yang, Hongmin Li, Wen Qiao, Chengye Jiang, more

International Journal of RF and Microwave Computer‐Aided Engineering > 32 > 2 > n/a - n/a

In this article, a novel digital predistortion (DPD) method for radio frequency (RF) power amplifiers (PAs) based on adaptive sample selection is proposed. In the traditional approach, the samples are selected randomly based only on the signal magnitude. This kind of selection implies the potential instability problem. To deal with this issue, we propose a new sampling strategy that takes the influence...

article

Spectroscopic, Microscopic, X‐Ray Diffraction and Thermal Stability Studies of Stearic Acid Modified Hydrotalcite Formed through Memory Effect

Saju Daniel, Padmanabhan Alapat, Nandakumar Kalarikkal, Sabu Thomas

Macromolecular Symposia > 398 > 1 > n/a - n/a

Organic modification of layered double hydroxide (LDH) (hydrotalcite) is a remarkable and a very essential step in the field of fabrication of exfoliated LDH polymer nanocomposites for novel multifaceted applications. In this research work, stearic acid (SA) modification of LDH has been conducted successfully by memory effect. The modification of LDH has been confirmed by atomic force microscopic...

article

In situ measurement of the isoplanatic patch for imaging through intact bone

Kayvan Forouhesh Tehrani, Nektarios Koukourakis, Jürgen Czarske, Luke J. Mortensen

Journal of Biophotonics > 14 > 1 > n/a - n/a

Wavefront‐shaping (WS) enables imaging through scattering tissues like bone, which is important for neuroscience and bone‐regeneration research. WS corrects for the optical aberrations at a given depth and field‐of‐view (FOV) within the sample; the extent of the validity of which is limited to a region known as the isoplanatic patch (IP). Knowing this parameter helps to estimate the number of corrections...

article

An optimality‐based model explains seasonal variation in C3 plant photosynthetic capacity

Chongya Jiang, Youngryel Ryu, Han Wang, Trevor F. Keenan

Global Change Biology > 26 > 11 > 6493 - 6510

The maximum rate of carboxylation (V_cmax) is an essential leaf trait determining the photosynthetic capacity of plants. Existing approaches for estimating V_cmax at large scale mainly rely on empirical relationships with proxies such as leaf nitrogen/chlorophyll content or hyperspectral reflectance, or on complicated inverse models from gross primary production or solar‐induced fluorescence. A novel...

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Search results

Memory-Effekt resorbierbarer Polymere

Memory-Effekt resorbierbarer Polymere

Noninvasive Fluorescence Imaging Through Scattering Media Beyond Memory Effect via Speckle Correlations

Designing Advanced Amorphous/Nanocrystalline Alloys by Controlling the Energy State

7‐2: Truly Bi‐stable Ferroelectric Liquid Crystal Based Modulators

Pervasiveness of inorganic gunshot residue (IGSR) in handguns after cleaning and conditioning procedures

Exploring the interplay between memory effects and vesicle dynamics: A five‐dimensional analysis using rigid sphere models and mapping techniques

Effects of salt content on secondary formation of hydrates in complex systems

Sequence‐Responsive Multifunctional Supramolecular Nanomicelles Act on the Regression of TNBC and Its Lung Metastasis via Synergic Pyroptosis‐Mediated Immune Activation

Inverse source problem with a posteriori boundary measurement for fractional diffusion equations

Conformational Kinetics in Chiral Poly(diphenylacetylene)s: A Dynamic P/M Memory Effect

Conformational Kinetics in Chiral Poly(diphenylacetylene)s: A Dynamic P/M Memory Effect

Synthesis and characterization of ternary layered double hydroxide containing zinc/copper/nickel and its PANI composite

Memory polynomial based support vector regression dynamic behavioral model for Doherty power amplifiers

Crystallization and Phase Transition of 1‐Butene Copolymers with Distinct Cyclic Co‐Units

Indirect stabilization of coupled abstract evolution equations with memory: Different propagation speeds

Digital predistortion based on sample selection with memory effect

Spectroscopic, Microscopic, X‐Ray Diffraction and Thermal Stability Studies of Stearic Acid Modified Hydrotalcite Formed through Memory Effect

In situ measurement of the isoplanatic patch for imaging through intact bone

An optimality‐based model explains seasonal variation in C3 plant photosynthetic capacity

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