A distinct rise of global interest in the role of cultural and creative industries in post-industrial urban development calls for the transformation of our industrial heritage into creative clusters. Despite many factories being removed in deindustrialization, some enterprises still preserve and reuse the former industrial lands. However, the inconclusive judgments on the performances of creative clusters call for an in-depth examination of the underlying mechanism of transforming dilapidated urban industrial spaces. In addition, few empirical studies have revealed the commonalities and differences of market entities employing both the top-down and bottom-up approaches during the redevelopment.

Liquid hydrogen is regarded as a key energy source and propellant for lunar bases due to its high energy density and abundance of polar water ice resources. However, its low boiling point and high latent heat of vaporization pose severe challenges for storage and management under the extreme lunar environment characterized by wide temperature variations, low pressure, and low gravity. This paper reviews the strategies for siting and deployment of liquid hydrogen storage systems on the Moon and the technical challenges posed by the lunar environment, with particular attention for thermal management technologies. Passive technologies include advanced insulation materials, thermal shielding, gas-cooled shielding layers, ortho-para hydrogen conversion, and passive venting, which optimize insulation performance and structural design to effectively reduce evaporation losses and maintain storage stability. Active technologies, such as cryogenic fluid mixing, thermodynamic venting, and refrigeration systems, dynamically regulate heat transfer and pressure variations within storage tanks, further enhancing storage efficiency and system reliability. In addition, this paper explores boil-off hydrogen recovery and reutilization strategies for liquid hydrogen, including hydrogen reliquefaction, mechanical, and non-mechanical compression. By recycling vaporized hydrogen, these strategies reduce resource waste and support the sustainable development of energy systems for lunar bases. In conclusion, this paper systematically evaluates passive and active thermal management technologies as well as vapor recovery strategies along with their technical adaptability, and then proposes feasible storage designs for the lunar environment. These efforts provide critical theoretical foundations and technical references for achieving safe and efficient storage of liquid hydrogen and energy self-sufficiency in lunar bases.

A series of nitrogen-containing heterocyclic 4,4′,5,5′-tetranitro-2,2′-biimidazolate salts was synthesized with the cations as pyridinium (3), pyrazolium (4), 3-amino-pyrazolium (5), imidazolium (6), N-methylimidazolium (7), 1,2,4-triazolium (8), 3-amino-1,2,4-triazolium (9), 3,5-diamino-1,2,4-triazolium (10), 1,2,3-triazolium (11), 1,5-diamino-tetrazolium (12), and 2,2′-biimidazolium (13). These salts were characterized by nuclear magnetic resonance, infrared spectroscopy, and elemental analysis. Their properties were measured or calculated. Salts 4, 6, 7, 8, and 9 were confirmed by single-crystal X-ray diffraction. Salt 13 with a bicyclic cation has the highest heat of formation of 3.06 kJ/g. With the highest detonation performance (29.9 GPa, 8,638 m/s) and low sensitivity (30 J, > 360 N), salt 12 is a promising candidate as an insensitive explosive.

In current architectural practice projects, the external visual image presented by many buildings ignores the interpretation of the environment and the local context, as well as the emotional feeling of people in visual cognition. At present, some indicators in the field of architectural design can be analyzed quantitatively, but the evaluation criteria related to vision remain in the stage of relying on experience and feeling so that the design result cannot be controlled accurately. This article reports the study of the influence of building distribution form and the ratio of the shorter side to longer side of building blocks (the S/L ratio) on the visual integration relationship between buildings and the natural environment, based on eye-tracker experiments. Six actual completed projects were chosen for evaluation in two experiments. This study uses eye-tracking recorded data to investigate the influence of two elements (the distribution of building blocks and the S/L ratio of building blocks) on the visual integration relationship of buildings and environment. It provides a theoretical approach that helps to improve architects’ building-design practices when working in different natural environments.

A three-dimensional (3D) numerical model of the double-tubes heat exchanger was established by using fluent16.0 in this study. The supercritical flow and heat transfer characteristics of R744 and its two azeotropic blends in the gas cooler and their performance in the single-stage compression heat pump were investigated. The results showed that the peak value of the heat transfer capabilities of R744 was the highest, and that of R744/R170 was the lowest. With the increase in the pressure, the peak value of the heat transfer capabilities decreased, and the bulk temperature corresponding to the peak value of the heat transfer capabilities also increased. Moreover, the temperature of R744/R170 at the same position near the outlet of the tube section was lower under the different working conditions, which would be conducive in increasing the coefficient of performance (COP) of the system. Lastly, when R744 and its two azeotropic blends were employed in the single-stage compression heat pump system, the difference of COP between R744/R170 and R744 decreased with the increase of the outlet temperature in the gas cooler, and the difference of COP between R744/R41 and R744 increased.