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Controlling magnetic damping lies at the heart of spintronic applications. In particular, manipulating the radiative damping of magnons is important for the emerging dissipative magnon–photon coupling and, therefore, opens up possibilities for advanced hybrid magnonic devices, nonreciprocal transmission, and topological information processing. The materials or structures that produce magnon modes can be further enriched with an artificial magnon mode produced in a complementary electric inductive–capacitive (CELC) resonator due to its flexible tunability, miniaturized size, and easy integration. Here, we explore the radiative linewidth broadening and frequency shifts of a CELC resonator in an on-chip coplanar waveguide in a self-interfering configuration. The radiative dynamics depends on the magnetic component of the local density of photon states, as well as the intensity, polarization, and boundary conditions. In particular, a voltage-controlled phase shifter was integrated to demonstrate voltage-controlled radiative damping. Adopting both the CELC resonator and its complementary structure may be an effective tool for obtaining the spatial distribution of the electric and magnetic components of microwaves. Our work is a general approach to manipulating the radiative damping of magnetic resonance, which has the potential for on-chip functional devices based on dissipative magnon–photon interactions. [ABSTRACT FROM AUTHOR]

To clarify the effect of leaf scorch on walnut leaf photosynthesis, photosynthetic parameters were measured in Juglans regia 'Wen185' and 'Xinxin2' symptom trees (WS, XS) and symptomless trees (WH, XH). At the early stage of infection and under the low-grade leaf scorch, WS showed significantly lower net photosynthetic rate (PN), stomatal limitation (Ls), and higher intercellular CO2 concentration (Ci) than those of WH. However, at the mid to late stage of infection and under the high-grade leaf scorch, WS showed significantly lower PN, Ci, the maximal quantum yield of PSII photochemistry and higher Ls, minimal fluorescence yield of the dark-adapted state, nonphotochemical quenching than those of WH, which would occur once Juglans regia 'Xinxin2' was infected. The above results indicated the effect of leaf scorch on walnut leaf photosynthesis was related to the walnut varieties and the duration and severity of the disease. Under the influence of leaf scorch, the decline in photosynthesis of Juglans regia 'Wen185' leaves changed from stomatal to nonstomatal restriction, while Juglans regia 'Xinxin2' leaves showed always nonstomatal restriction. [ABSTRACT FROM AUTHOR]

Abstract In Europe, swainsonine has been studied widely for prevention of metastasis and cancer therapy. In order to investigate the effects and mechanisms of swainsonine on the human gastric carcinoma [...]