Human coronaviruses HCoV-OC43, HCoV-229E, HCoV-NL63 and HCoV-HKU1 are common respiratory viruses associated with acute infection. They have a global distribution. Rapid accurate diagnosis of HCoV infection is important for the management treatment hospitalized patients Here, we developed melting curve-based multiplex RT-qPCR assay simultaneous detection four HCoVs. In assay, SYTO 9 was used to replace SYBR Green I as fluorescent dye, GC-modified primers were designed improve temperature (Tm)...

Automatic femur segmentation from computed tomography volume is a crucial but challenging task for computer-aided diagnosis in orthopedic surgeries. The main obstacles are weak bone boundaries, narrowness of joint space, variations density and shape, as well diverse leg postures. In this paper, we presented novel 3-D feature-enhanced network to address these challenges. novelty our approach lies two feature enhancement modules, including the edge detection multi-scale features fusion. First,...

This paper establishes an agent-based simulation system of the carbon emissions trading in accordance with complex feature process. analyzes impact quota allocation mechanism on for three different aspects including amount reduction, economic effect emitters, and reduction cost. Based data industries China, several simulations were made. The results indicate that policy can effectively reduce a perfectly competitive market. Moreover, by comparing separate mechanisms, we obtain result scheme...

Nematodes are among the most important faunal groups in soil food webs and serve as bioindicators evaluating subsurface ecological processes ecosystem functioning. Although previous studies have reported effects of vegetation types on nematode communities, community patterns nematodes at different depths during secondary forest succession remain unclear. Through a field survey, we investigated how characteristics changed two (0–10 cm 10–20 cm) across subalpine successional stages consisting...

Agricultural applications of remote sensing data typically require high spatial resolution and frequent observations. The increasing availability imagery meets the requirement well. However, long revisit period cloud contamination severely compromise their ability to monitor crop growth, which is characterized by temporal heterogeneity. Many spatiotemporal fusion methods have been developed produce synthetic images with resolutions. these existing focus on fusing low medium satellite in...

Lactate dehydrogenase (LDH) is an enzyme that responsible for the production of lactic acid, which a necessary byproduct when body does not have enough oxygen. LDH levels in blood can be used as marker to predict mortality patients with ARDS, severe COVID-19, and cancer. To analyze clinical characteristics COVID-19 elderly correlation between respiratory failure patients, improve identification management this type pneumonia by clinicians.

Purpose While scheduling and transporting emergency materials in disasters, the delivery vehicles are arriving at distributing center constantly. Meanwhile, information of disaster reported to government is updating continuously. Therefore, this paper aims propose an approach help make a transportation plan response disasters addressing problem material demand vehicle amount continual alteration. Design/methodology/approach After elaborating features process transportation, proposes model...

Abstract So far, discussions on the effects of elements flame retardant properties have been widespread in retardant‐related fields, but reports specific structures are rare. In this work, two novel phosphorus‐nitrogen retardants were synthesized from diphenylphosphinyl chloride and diphenyl chlorophosphite. It was proved that POC structure DOAT is beneficial to form a more stable carbon layer with high phosphorus content reduce total amount smoke, while PC DPAT conducive produce large...

This research utilizes the environmental Kuznets curve to demonstrate interrelationship between economic growth, industrial structure, and water quality of Xiangjiang river basin in China by employing spatial panel data models. First, it obtains two variables (namely, CODMn, which represents chemical oxygen demand using KMnO4 as oxidant, NH3-N, ammonia nitrogen content index wastewater) pretreating 42 monitoring stations from 2005 2015. Afterward, Moran’s I is adopted analyze autocorrelation...

Purpose In recent years, terrorist attacks have gradually become one of the important factors endangering social security. this context, research aims to propose methods and principles which can be utilized make effective evacuation plans reduce casualties in attacks. Design/methodology/approach By analyzing statistical data attack videos, paper proposes an extended cellular automaton (CA) model simulates panic pedestrians attack. Findings The main findings are as follows. (1) movement leads...

This paper investigates the forecasting performance of non-linear time series SETAR model by using Canadian GDP data from 1965 to 2000. Besides within-sample fit, a standard linear ARIMA for same sample has also been generated comparative purposes. Two methods, one-step-ahead and multi-step-ahead forecasting, are compared each type model.

The purpose of this paper is to analyze the characteristics and human effects atmospheric pollution in Yangtze River Basin (YRB). An AQI(Air Quality Index)-based weighted co-word method applied explore keywords taken from data, using authoritative media sources government reports. Hierarchical clustering techniques are utilized classify visualize display different types incidents. results reveal following four main clusters: enterprise pollution, coal-burning traffic air pollutants. Cluster...

This study investigated the effects of fluctuating temperature on quality frozen beef, which were preserved under three different fluctuation ranges (wide −18 ± 2°C, medium 1°C, and small 0.5°C). Results showed that, with an increase in fluctuation, rate thaw loss significantly increased, total volatile basic nitrogen value increased. However, these fluctuations did not influence beef color, TBARS value, muscle fiber diameter. indicated a certain level, smaller had better preservation beef....

The automatic flap barrier gate system (AFBGS) plays a critical role in building security, but it is more vulnerable to natural hazards than common exits (including power failure, due earthquakes, and delayed evacuation, safety certification, etc.). This article considers dynamic decision-making process of evacuees during post-earthquake evacuation near an AFBGS. An interesting metaphor, broken windows (BW), utilized interpret people’s actual behavior evacuation. A multi-stage mechanism...

To develop the countryside, industry must be revitalized. Modern agricultural industrial park, as an important content of implementing rural revitalization strategy and deepening supply-side reform during "14th Five-Year Plan" period, requires high attention to multi-functionality agriculture, organically combining agriculture with improvement infrastructure, soundness functions, industrialization avoiding weak functionality traditional strengthening strong smart functional realizing organic...

The purpose of infrared image and visible light fusion is to preserve as much possible the target information in detailed image. For this purpose, paper first extracts saliency map based on guided filtering, uses NSCT decompose images at multiple scales, adds low-frequency component, applies weighted average through adaptive weight map. In high frequency absolute value maximum coefficient taken be for fusion. This method takes into account generally brightness human targets images, maintains...