Abstract Backgrounds The fungus Trichoderma reesei is an important workhorse for expression of homologous or heterologous genes, and the inducible cbh1 promoter generally used. However, constitutive more preferable in some cases than that leads to production unwanted cellulase components. In this work, promoters T. were screened successfully used high level xylanase II. Results transcriptional profiles 13 key genes participate glucose metabolism analyzed by quantitative real-time...

Purpose The wheel wear of high-speed trains is the main concern in operation process trains. Wheel reprofile usually adopts thin flange profiles for economic strategy; however, evolution law profile not clear. purpose this paper mainly researches and influence factors wheel. Design/methodology/approach To solve problem, analyzed wheel-rail contact relationship established a vehicle dynamic model train. Jendel was used to analyze rail deviation affecting under profiles. Findings Due...

Nowadays, what captures consumers' primary attention is how to purchase electric vehicles with long range and desirable price. Lightweight construction stands as one of the most effective approaches for prolonging lowering costs. As a consequence, it particularly imperative undertake lightweight design optimization battery bracket new energy by applying 3D printing technology. To actualize this goal, Rhino software was initially employed modeling system pure vehicle in China. Subsequently,...

In this paper, the electrochemical and photophysical properties of two well-solubilized monofunctionalized methanofullerene derivatives (TDC60 TC60) were investigated by cyclic voltammetry, UV−visible absorption, fluorescence spectroscopic methods. These methanofullerenes show almost same electron acceptor properties. The MEH-PPV/methanofullerene blends made, it was found that photoluminescence MEH-PPV could be quenched more efficiently TDC60. used to fabricate organic photovoltaic devices...

Against the update of load design standards and requirement long-term service, many latticed towers using steel angles subjected to gradual performance degradation must be retrofitted for bearing further social functions, e.g., electric power transmission fifth-generation mobile communication. Therefore, this paper proposed a non-destructive reinforcement method by avoiding unnecessary new construction or complex procedure. The angle is composed angle, plate, fixture. Standardized fixtures...

Bone plate design and production methods are critical for producing metamaterial bone plates. This study investigated the development process of porous structures plates biofixation applications. We designed using parametric modeling fused them via implicit surface fusion method. Likewise, we structure reverse reconstruction topological optimization. Thereafter, utilized three-dimensional (3D) printing post-processing plate. observed a reduced stress-shielding effect after Additionally,...

In conjunction with the swift enhancement of China’s economic prowess, demand for jewelry among populace is gradually evolving towards personalized, customized, and intricate designs. Traditional manufacturing approaches are increasingly inadequate to meet these demands. However, advent 3D printing technology presents a viable solution direct fabrication such sophisticated jewelry. To this end, conceptualization personalized inspiration initiated, followed by implementation parametric design...

Parts are often warped and deformed when they molded using selective laser melting (SLM) technology. Thus, it is necessary to study the addition support modes of parts SLM. Consequently, we designed dendritic, E-stage conical supports, having different structural parameters partitions Magics, then, analyzed their performances finite element software Abaqus. The supports were optimized finally tested SLM molding maximum stress concentration was found for dendritic followed by then supports....

It is necessary to study the design method and molding techniques of selective laser melting (SLM) tibial implants improve success rate knee implant surgery quality life patients. In this study, three-dimensional (3D) reconstruction was completed using reverse combined with forward methods, optimization carried out on constructed model by adopting parametric finite element (FEM), SLM device employed for direct manufacture its techniques. The results indicated that methods FEM displayed...

Shielding effectiveness (SE) of metallic structures with thin slots can be analyzed by using finite-difference time domain (FDTD) method. However, the arbitrarily shaped make calculation unbearable or even worse. To improve computational efficiency, contour path (CP) algorithm is thus extended to applied complex FDTD. An equivalent model proposed simplify CP-FDTD for penetrating paths formed overlapped joints flush-mounted aperture panels. It validated good accordance SE obtained...

A general method was developed to incorporate fulleropyrrolidinium into the nanoscale cavities of Nafion membrane through electrostatic interaction. The aggregated sizes and structures were controlled by membrane, which confirmed XPS TEM studies. incorporation a diffusion-controlled process as evidenced from absorption spectroscopic method. spectra nanoaggregates extended near-IR region fluorescence emission red-shifted due formation excimers. resulting fulleropyrrolidinium−Nafion...

To improve the quality of metal 3D printing parts, it is necessary to optimize structure dust collector (guide groove) printer. do this, we applied parametric modeling design guide groove, used mold flow simulation groove structure, and finally evaluated performance by measurement contact angles different materials. The results showed higher efficiency better using combined with simulation. turbulence intensity distribution field were somewhat reduced, velocity at outlet was reduced 3.18%,...

This paper systematically investigated the axial compression behavior of circular concrete-filled high-strength thin-walled steel tubular (CFHTST) columns with out-of-code diameter-to-thickness (D/t) ratios. The test was first conducted to examine failure mode, load-displacement curves, and composite mechanism effect. finite element (FE) model thereafter established perform full-range analysis on load versus displacement curve as well interaction behavior, where parametric study performed...

The modeling efficiency, matching, and biocompatibility are key factors affecting the surgical success of a personalized thyroid cartilage prosthesis. We performed three-dimensional reconstruction prosthesis by combining reverse forward methods, then completed design with total or partial resection using parametric method. Direct manufacturing was selective laser melting (SLM) molding equipment TC4 material. structure implant unit optimized. results show good effects for either Good matching...