Functionalization of carbon nanodots (C-dots) with quinoline derivatives enables a highly sensitive and specific nanosensor for Zn²⁺ sensing in aqueous solution imaging <italic>in vivo</italic>.

fCDs with tunable photoluminescence are synthesized by controlling surface passivation reactions, and demonstrated for Fe³⁺ determination in a complicated biological environment.

Recent developments in the rational design and controlled assembly of nanoscale building blocks have resulted functional devices such as nano-optoelectronics, novel contrast probes for molecular imaging, nanosensors. In present study, we designed synthesized a hybrid nanomaterial consisting [Ru(bpy)3]2+-encapsulated silica nanoparticles (SiNPs) gold (AuNPs) through peptide-bridged controllable way. A peptide that contains recognition sequence DEVD specific active caspase-3 cleavage was...

Advances in the controlled assembly of nanoscale building blocks have resulted functional devices which can find applications electronics, biomedical imaging, drug delivery etc. In this study, novel covalent nanohybrid materials based upon [Ru(bpy)3]2+-doped silica nanoparticles (SiNPs) and gold (AuNPs), could be conditioned as OFF–ON probes for glutathione (GSH) detection, were designed assembled sequence, with disulfide bonds bridging elements. The structural optical properties...

Warranties are prevalent in the market. The manufacturer of products sold with warranties often faces a problem balancing trade-off between warranty cost and boosted demand by when designing warranties. For two-dimensional base both age limit usage limit, heterogeneous rate customers not only has an effect on but also differentiates customers' perceptions period. example, high-usage more concerned about period, while low-usage preferred to longer limit. This paper defines attractiveness...

The Chengdu-Chongqing urban agglomeration (CUA) faces considerable air quality concerns, although the situation has improved in past 15 years. driving effects of population, land and economic urbanization on PM2.5 concentrations CUA have largely been overlooked previous studies. contributions natural socio-economic factors to ignored spillover multi-dimensional underestimated. This study explores spatial dependence trend evolution at grid county level, analyzing direct concentrations....

Understanding the field reliability of a sold product is crucial to both managers and engineers for monitoring quality improving warranty service design. When practitioners model data, they it often assume that lifetimes products manufactured on different days homogeneously distributed (i.e., remains same over time). Based two-dimensional data set collected from an automobile manufacturer, we find improves time. A log-linear regression failure rate proposed by considering usage manufacturing...

Offering appropriate preventive maintenance strategy has an effective impact on achieving higher customer satisfaction. This article presents a flexible strategy, where customers are grouped into two groups according to their usage rates, and then different programs applied types of customers. The product follows two-dimensional failure process the cost is shared between manufacturer pro rata basis. manufacturer’s warranty minimized by jointly optimizing proportion cost, number corresponding...

Design of experiments has received much attention in the context reliability improvement. Many engineers and researchers are considering how to use designed improve products processes. This work illustrates a 12-run Plackett-Burman design its analysis diamond drill bit. A detailed description execution provided including choose factors determine number experimental factors. In addition, results real-world experiment presented predicted performance from statistical model fitting is verified...

In many mining areas, there is a lot of pressed coal under buildings, railways, and water bodies, are geological conditions thick unconsolidated layers, so the surface subsidence has certain particularity. The key to solve problem control technology subsidence. development strip filling provides kind economical effective technology. With passage time, natural weathering, flow, fracture some pillars may lead instability failure pillars. Therefore, selection parameters plays an important role...

At the present time, it is of major significance to study solid-liquid-gas three-phase coupling relationship coal, water, and gas in deep-mining stopes order prevent control coal outbursts high-gas mines. In this study, influence rules water on mechanical characteristics as well diffusion migration processes, was examined by combining theoretical analysis laboratory testing procedures. The results showed that with increases content, bodies presented change trends first increasing then...

In the process of coal seam mining, there are often hard thick key layers in overlying strata. Due to high strength and good integrity layer, after layer is broken, strata will collapse lose stability a large area, which very easy induce dynamic disasters such as rock burst, mine earthquake, wall caving, roof slab caving. Aiming at working face, response under strong earthquake induced by breaking main high-level magmatic numerically simulated analyzed using FLAC2D numerical simulation...

Soil salinity is a growing problem in agriculture, plant growth regulators (PGRs) can regulate response to stress. The objective of this study was evaluate the effects exogenous 6-benzyladenine (6-BA) on photosynthetic capacity and antioxidant defences watermelon (Citrullus lanatus L.) seedlings under NaCl Two genotypes were subjected four different treatments: (1) normal water (control); (2) 20 mg L−1 6-BA; (3) 120 mmol NaCl; (4) + 6-BA. Our results showed that stress inhibited seedlings,...

To examine the correlation between regional economic growth and inter-region transportation costs in China, this study establishes a model embedded with based on Cobb-Douglas production function. Based balanced empirical model, verifies by conducting regression analysis of panel data 29 provinces, municipalities, autonomous regions from 1985 to 2015. The results show that: (1) per capita GDP among three (namely, eastern, central, western China) meets conditional convergence trend, decreasing...