Efficient learning of Scale-Adaptive Nearly Affine Invariant Networks.

Recent research has demonstrated the significance of incorporating invariance into neural networks. However, existing methods require direct sampling over the entire transformation set, notably computationally taxing for large groups like the affine group. In this study, we propose a more efficient approach by addressing the invariances of the subgroups within a larger group.

The effect of screw orientation on internal fixation of Letenneur type II Hoffa fractures: a biomechanics study.

Background: To investigate the biomechanical effects of screw orientation and fracture block size on the internal fixation system for Letenneur type II Hoffa fractures.

Methods: The fracture models were randomly divided into six groups according to the fracture subtypes and the direction of nail placement, and a plumb line of the posterior condylar tangent was made across the base of the posterior femoral condyle. The fracture blocks of the three types of fracture were calculated and recorded in the sagittal position, and the biomechanical performance of the six groups was evaluated by biomechanical tests.

[Research progress on biomechanics for internal fixation in tibial plateau fracture].

Objective: To review the biomechanical research progress of internal fixation of tibial plateau fracture in recent years and provide a reference for the selection of internal fixation in clinic.

Methods: The literature related to the biomechanical research of internal fixation of tibial plateau fracture at home and abroad was extensively reviewed, and the biomechanical characteristics of the internal fixation mode and position as well as the biomechanical characteristics of different internal fixators, such as screws, plates, and intramedullary nails were summarized and analyzed.

Results: Tibial plateau fracture is one of the common types of knee fractures.

Numerical Study on the Unstable Flow Dynamics of Wormlike Micellar Solutions past a Sphere in the Creeping Flow Regime.

The flow dynamics of wormlike micellar solutions around a sphere is a fundamental problem in particle-laden complex fluids but is still understood insufficiently. In this study, the flows of the wormlike micellar solution past a sphere in the creeping flow regime are investigated numerically with the two species, micelles scission/reforming, Vasquez-Cook-McKinley (VCM) and the single-species Giesekus constitutive equations. The two constitutive models both exhibit the shear thinning and the extension hardening rheological properties.

Tissue factor pathway inhibitor 2 suppresses the growth of thyroid cancer cells through by induction of apoptosis.

Background: Tissue factor pathway inhibitor 2 (TFPI-2) has been recently identified as a tumor suppressor gene in several human cancers, whereas its role in thyroid cancer has been unclear.

Methods: The TFPI-2 protein level in thyroid cancer tissues and cell lines (8305C and B-CPAP) were examined using immunohistochemistry and immunoblotting. The TFPI-2 promoter methylation was examined using methylation-specific polymerase chain reaction (MSP).

Material Synthesis and Device Aspects of Monolayer Tungsten Diselenide.

In this paper, we investigate the synthesis of WSe by chemical vapor deposition and study the current transport and device scaling of monolayer WSe. We found that the device characteristics of the back-gated WSe transistors with thick oxides are very sensitive to the applied drain bias, especially for transistors in the sub-micrometer regime. The threshold voltage, subthreshold swing, and extracted field-effect mobility vary with the applied drain bias.

Thermal sublimation: a scalable and controllable thinning method for the fabrication of few-layer black phosphorus.

We report uniform layer-by-layer sublimation of black phosphorus under heating below 600 K. The uniformity and crystallinity of BP samples after thermal thinning were confirmed by Raman spectra and Raman mapping. The sublimation rate of BP was around 0.

Selective and sensitive fluorescence-shift probes based on two dansyl groups for mercury(ii) ion detection.

Two probes ( and ) bearing two dansyl fluorophores were synthesized and applied to the detection of mercury(ii) ions in aqueous solution. These probes exhibited a selective response to Hg(2+) in a buffered solution, with high sensitivity and a unique fluorescence response signal which displayed a blue-shift effect in the fluorescence emission peak. The Hg(2+) recognition mechanisms of the probes were determined by NMR spectroscopy, ESI-MS and UV-vis spectroscopy.

Bis(μ-2-hydroxy-benozato)-κO,O':O';κO:O,O'-bis-[(2-hydroxy-benozato-κO,O')(1,10-phenanthroline-κN,N')cadmium(II)].

The dinuclear title compound, [Cd(2)(C(7)H(5)O(3))(4)(C(12)H(8)N(2))(2)], is located on a crystallographic rotation twofold axis. The two Cd(II) ions are connected by two tridentate bridging 2-hydroxy-benzoate anions. Each Cd(II) ion is seven-coordinated by five O atoms from three 2-hydroxy-benzoate ligands and two N atoms from 1,10-phenanthroline.