To improve the self-healing efficiency of bacterial concrete, one type bacteria which could survive, germinate and induce calcium carbonate precipitation at 7 °C was investigated incorporated into concrete directly. The results showed that after healing for 14 d, cracks with 400–500 μm width be sealed, higher water resistance obtained cracked specimens bacteria, compared plain concrete. Therefore, it concluded has potential promoting self-healed low temperature.

In recent years, some composite insulators operating in coastal foggy areas have shown different levels of degradation phenomena. This paper presents several performances and properties silicone rubber under the salt-fog environment with AC voltage. Analysis conducted after treatment by techniques, such as static contact angle, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), dielectric parameter, flashover voltage show a significant samples. The absorption...

Background: Poly-L-lactic acid (PLLA) stents have broad application prospects in the treatment of cardiovascular diseases due to their excellent mechanical properties and biodegradability. However, foreign body reactions caused by stent implantation remain a bottleneck that limits clinical PLLA stents. To solve this problem, biocompatibility must be urgently improved. Albumin, most abundant inert protein blood, possesses ability modify surface biomaterials, mitigating reactions—a phenomenon...

In this paper, cross-linked polyethylene (XLPE) cables of the same batch from Factory A, which ran 1 to 8 years in Jiangsu Province, are sampled. Some widely accepted aging characterization methods XLPE such as gel content test, differential scanning calorimetry (DSC) tensile test and hardness employed obtain physicochemical, mechanical electrical properties samples. Then, some lifespan prediction parameters significantly correlated with operating time obtained through correlation...

Micro-nanoencapsulated phase change materials (M-NEPCMs) are proposed to be useful in liquid desiccant dehumidification by restraining the temperature rise moisture-removal process and improving efficiency. In this paper, n-octadecane M-NEPCMs with desirable thermal properties for internally-cooled were fabricated using compound emulsifiers through in-situ polymerization method. Melamine-formaldehyde resin was used as shell material. The effects of mixing ratio, emulsification methods amount...

Abstract The Naruo porphyry copper‐gold deposit (hereinafter referred to as the deposit) in Tibet is a potentially ultra‐large, typical gold‐rich copper deposit, which was recently discovered Bangongco‐Nujiang metallogenic belt. This study analyzed U‐Pb chronology and Hf isotopes of ore‐bearing granodiorite using LA‐ICPMS dating technique. results show that weighted average age 124.03±0.94Ma (MSWD=1.7, n =20), 206 Pb/ 238 U isochron 126.2±2.7 Ma (MSWD=1.02, both are within error. represents...

In this paper, silicone rubber on composite insulators from three different manufacturers with an operating duration between 1 and 10 years were sampled. order to investigate the law of diminishing performance these samples in aging process, widely adopted process evaluation test methods such as Hydrophobicity test, Water absorption performed. Based results, parameters significantly correlated time obtained by means correlation calculation. Finally, considering differences parameter values...

Abstract Long‐term thermal ageing might have impacts on the physicochemical properties of cross‐linked polyethene (XLPE) cables, thereby influencing their electrical behaviours, such as treeing initiation and growth. The main objective this work is to report effects behaviours (initiation growth) in XLPE cable insulation. For purpose, growth test were performed accelerated samples. In addition, Differential Scanning Calorimetry Fourier Transform Infrared Spectroscopy utilised investigate...

Abstract Cross‐linked polyethylene (XLPE) cables are a critical component of power transmission systems. As operating conditions sometimes exceed the thresholds set in discipline, some fail to reach their designed lifespan, and consequently evaluating aging degree is particularly necessary. Here ten with an duration between 1 11 years from adjacent lines were sampled. Investigations performed through various evaluation methods. Then typical lifespan prediction indices concluded test results...

The sustainable development of a shallow aquifer geothermal reservoir is strongly affected by the reinjection–production strategy. However, strategy optimization small-scale exploitation unit with tens meters well spacing site specific and has not yet been fulfilled. This study numerically investigates heat extraction based on various strategies which were conducted in single-phase aquitard–aquifer system Huailai County, Hebei Province, China. response water level production temperature...

Welding fixtures are made specifically to hold multiple parts together, allow adequate tool passage, resist high heat and sputter, permit passage of weld runoff, in some cases conduct electricity provide grounding. Traditionally, welding fixture design often heavily relies on engineers' experience knowledge lacks obvious progress utilizing automatic intelligent technologies effectively. In this paper, a methodology computer-aided is proposed. Based methodology, the process then presented,...

In spite of the widespread use CAD systems for design and CAE analysis, two processes are not well integrated because models inherently different types geometric there currently exists no generic, unified model that allows both analysis information to be specified shared. XML has become de-facto standard data representation exchange on World-Wide Web. This paper proposes a integration method based technique in order resolve problem transmission CAE. Designers parametrically bridges through...

This paper proposes an optimization framework for the esports industry service blueprint based on Fuzzy Analytic Hierarchy Process. Through literature review, case analysis of Shenzhen industry, and expert surveys, a hierarchical structure model is constructed. The triangular fuzzy number method used to calculate weights each indicator. An empirical study services conducted, paths are proposed. effectiveness verified by comparing performance before after optimization. can comprehensively...

Long-term exposure to high temperatures can lead the physicochemical properties of dc cross-linked polyethylene (XLPE) cable material degrading irreversibly, compromising its electrical performance. In this work, effects thermal aging on tree initiation and performance treated were examined. A Dam-flood model was constructed investigate effect behaviors, where indices corresponding behaviors obtained based model. Ultimately, by means multiple linear regression estimation a GM (1, N) model,...