Effects of Light Quality on Carbon and Nitrogen Assimilation and Root Activity of Eggplant

[Objective] This study was conducted to provide theoretical and data reference for high-quality high-yield production of Shangqie 1 under controlled light quality environment and light quality control of other eggplant varieties. [Method] With Shangqie1 as an experiment material, the effects of red light, blue light, red-blue light, red-blue light and white light(control) on the carbon-nitrogen metabolism and root vitality of eggplant were investigated. [Result] Different light quality significantly affected sugar and starch contents in leaves of eggplant. Under the red-blue light(5∶1) treatment, the sucrose, total sugar and starch contents were the highest, and the values were higher than those under the white light treatment by 3.47%, 13.61% and 33.49%,respectively. The fructose content was the highest under white light. Under red-blue light(3∶1) and red-blue light(5∶1), the nitrate nitrogen contents were higher than that under white light, indicating that compound light affects nitrate content not only by simple superposition of light quality, but also by other type of interaction effect. The free amino acid and soluble protein contents under blue, red-blue(3∶1), red-blue(5∶1) and red light treatments were all higher than those under the white light treatment, and the blue light treatment exhibited the highest values, which were higher than those under white light by 24.89% and 46.62%, respectively, with significant differences. The red-blue light(5 ∶1) treatment exhibited the highest root vitality of eggplant, which was higher than that under the white light treatment by 31.85%. The red light treatment had the second highest root vitality, which was higher than that under the white light treatment by 19.30%, followed by the red-blue light(5∶1) treatment, and the blue light treatment showed the lowest value. [Conclusion] Under red-blue light(5 ∶1) treatment, eggplant had vigorous carbon-nitrogen metabolism and the highest root vitality.

Functionalization of bismuth sulfide nanomaterials for their application in cancer theranostics

Multifunctional bismuth sulfide(Bi_(2)S_(3))nanomate rials exhibit significant potential as na no medicines for the diagnosis and treatment of cancer.These nanomaterials act as excellent photothermal agents and radiation sensitizers for the treatment of tumors,and they can also act as contrast agents for computed tomography(CT)imaging,photoacoustic imaging(PA),and other forms of imaging to provide real-time tumor monitoring and testing guidance.Compared with other nanomaterials,Bi2S3 nanomaterials can readily adapt to different applications by virtue of the fact that they can be easily functionalized.However,these nanomaterials have some limitations that cannot be ignored and need to be addressed,such as poor biocompatibility,toxicity,and low chemical stability.It is widely believed that appropriate functionalization of Bi_(2)S_(3) nanomaterials could remedy such defects and significantly improve performance.This review summarizes the ways in which Bi_(2)S_(3) nanomaterials can be functionalized and discusses their applications in cancer theranostics over the last few years,focusing particularly on imaging and therapy.We also discuss issues relating to how Bi_(2)S_(3) nanomaterials can be analyzed,including how we might be able to use these systems to inhibit and treat tumors and how current limitations might be ove rcome to improve treatment efficacy.Finally,we hope to provide inspiration and guidance as to how we might create a mo re optimized multifunctio nal nano-system for the diagnosis and treatment of tumors.

Mid-infrared Q-switch performance of ZrC

Zirconium carbide(ZrC)with layered structure and nanoparticle morphology was prepared by sonication in an ethyl alcohol solvent.The morphology and saturable absorption properties of the ZrC were systematically analyzed.By using ZrC nanoparticle coated substrates as saturable absorbers,stable Q-switched 3μm Er:Lu_(2)O_(3) lasers were realized.Pulse durations of 50 ns with pulse energies of 20μJ and peak power of 0.4 kW are the shortest obtained with novel-material-based Q-switched lasers in the 3μm wavelength range.