On the step-type contrast structure of a second-order semilinear differential equation with integral boundary conditions

In this paper we investigate the step-type contrast structure of a second-order semilinear differential equation with integral boundary conditions. The asymptotic solution is constructed by the boundary function method, and the uniform validity of the formal solution is proved by the theory of differential equalities

Configuration and Optimal Application of Gasification Equipment in the LNG Emergency Reserve Center

[Introduction] The technical analysis and investigation on the application of process equipment in the gasification area of the LNG (Liquefied Natural Gas) emergency reserve center, is carried out to solve the problems of frosting and icing in the operation of a single grouping of ambient air vaporizers, in the gasification area of Xi'an Yinzhen LNG emergency reserve center. [Method] The LNG gasification technology in use mainly included ambient air vaporizing and water-bath vaporizing in Chinese Mainland. When the ambient air vaporizer was operated with high load and in low temperature seasons, it was easy to fog around the equipment, and the equipment surface would always be covered with frost and ice but the water-bath vaporizer did not have this phenomenon. After the investigation and comparison of the operation of gasification equipment in various station gasification process areas, such as LNG reserve centers and coastal terminals in recent years, the independent LNG water bath vaporizer could realize the gasification production without frost, ice and fog on the surface of the equipment in engineering; The combined operation system of the water-bath vaporizer and the ambient air vaporizer could combine and optimize the LNG gasification, which could not only obtain the heat energy contained in the air for LNG gasification production, but also eliminate the impact of low-temperature fogging, ice and frost on LNG gasification production. [Result] The gasification process in Chinese Mainland of LNG with large reserve can smoothly complete the production without being affected by low temperatures. [Conclusion] To build a green energy system, based on the formation of a new energy network, high-efficiency energy transmission, distribution, storage and conversion technologies as well as the integration and complementary development of the natural gas, wind, solar, water, hydrogen, and other renewable clean energies for gas power generation, have important supporting roles in perfecting energy storage engineering and technology, thus the optimization of large-scale LNG gasification technology is an important engineering practice

T-Rex: Counting by Visual Prompting

We introduce T-Rex, an interactive object counting model designed to first detect and then count any objects. We formulate object counting as an open-set object detection task with the integration of visual prompts. Users can specify the objects of interest by marking points or boxes on a reference image, and T-Rex then detects all objects with a similar pattern. Guided by the visual feedback from T-Rex, users can also interactively refine the counting results by prompting on missing or falsely-detected objects. T-Rex has achieved state-of-the-art performance on several class-agnostic counting benchmarks. To further exploit its potential, we established a new counting benchmark encompassing diverse scenarios and challenges. Both quantitative and qualitative results show that T-Rex possesses exceptional zero-shot counting capabilities. We also present various practical application scenarios for T-Rex, illustrating its potential in the realm of visual prompting.Comment: Technical report. Work in progres

Loss-difference-induced localization in a non-Hermitian honeycomb photonic lattice

Non-Hermitian systems with complex-valued energy spectra provide an extraordinary platform for manipulating unconventional dynamics of light. Here, we demonstrate the localization of light in an instantaneously reconfigurable non-Hermitian honeycomb photonic lattice that is established in a coherently-prepared atomic system. One set of the sublattices is optically modulated to introduce the absorptive difference between neighboring lattice sites, where the Dirac points in reciprocal space are extended into dispersionless local flat bands. When these local flat bands are broad enough due to larger loss difference, the incident beam is effectively localized at one set of the lattices with weaker absorption, namely, the commonly seen power exchange between adjacent channels in photonic lattices is effectively prohibited. The current work unlocks a new capability from non-Hermitian two-dimensional photonic lattices and provides an alternative route for engineering tunable local flat bands in photonic structures

Cocaine Modulates Locomotion Behavior in C. elegans

Cocaine, a potent addictive substance, is an inhibitor of monoamine transporters, including DAT (dopamine transporter), SERT (serotonin transporter) and NET (norepinephrine transporter). Cocaine administration induces complex behavioral alterations in mammals, but the underlying mechanisms are not well understood. Here, we tested the effect of cocaine on C. elegans behavior. We show for the first time that acute cocaine treatment evokes changes in C. elegans locomotor activity. Interestingly, the neurotransmitter serotonin, rather than dopamine, is required for cocaine response in C. elegans. The C. elegans SERT MOD-5 is essential for the effect of cocaine, consistent with the role of cocaine in targeting monoamine transporters. We further show that the behavioral response to cocaine is primarily mediated by the ionotropic serotonin receptor MOD-1. Thus, cocaine modulates locomotion behavior in C. elegans primarily by impinging on its serotoninergic system