The presence of sulfur in coals has raised serious environmental issues, which are obstacles to large-scale utilization coals. Hydrothermal dewatering (HTD) is a promising upgrading method for low-rank (LRCs) significantly remove oxygen-containing groups and irreversibly decrease the inherent moisture content. To uncouple complex behavior evolution during HTD processing lignite elucidate main mechanism, this research experimentally studied characteristics transformation Chinese from...

Petroleum coke and lignite are two important fossil fuels that have not been widely used in China. coke–lignite slurry (PCLS), a mixture of petroleum coke, lignite, water, additives, efficiently utilizes the materials. In this study, we investigate effects proportion (α) on slurryability, rheological behavior, stability, increasing temperature characteristics PCLSs. The results show fixed-viscosity solid concentration (ω 0) increases with α. ω 0 lignite-water (LWS, α = is 46.7 %, compared to...

The high moisture content of low-rank coals (LRCs) is associated with the noncovalent interactions between coal and water, such as hydrogen bonding van der Waals attraction. In this study, molecular model lignite was constructed its electrostatic potential (ESP) on a surface analyzed. mechanism water absorption hydrophilic or hydrophobic sites investigated based atoms in molecules analysis reduced density gradient seven typical lignite···water complexes. regions most negative positive ESP...

A composite graphene oxide-cellulose (GOC) adsorbent was prepared from raw materials of graphite and cellulose. The structure micromorphology the products were characterized by Fourier transform infrared (FTIR) spectroscopy, Raman scanning electron microscopy (SEM). adsorption characteristics GOC together with oxide (GO) in terms uranium(VI) removal aqueous solution investigated batch mode reactor. effect pH, dosage, contact time on studied. Results fitted both Langmuir Freundlich isotherms....

The environmental characteristics of the Taiwan Strait (TS) have been linked to variations in abundance and distribution greater amberjack (Seriola dumerili) populations. Greater is a commercially ecologically valuable species ecosystems, its spatial patterns are pivotal fisheries management conservation. However, relationship between catch rates S. dumerili changes their impact on fish communities remains undetermined TS. goal this study was determine spatiotemporal pattern with TS from...

Abstract Spontaneous combustion behaviour and physicochemical characteristics of Ximeng lignite dewatered by hydrothermal dewatering (HTD) were investigated. In addition, effect upgrading temperature, as well the mechanism for evolution spontaneous propensity was discussed. The results showed that after HTD, fixed carbon content increased, whereas equilibrium moisture volatile decreased; aromatic carbons increased relatively at expense oxygen‐containing functional groups aliphatic...

Urban surface water is an important freshwater resource, and the environment increasingly being destroyed. Dynamic monitoring of great significance for protecting ecological environment. Remote sensing technology provides technical support monitoring, which overcomes drawbacks traditional manual sampling. It has been widely applied in monitoring. The paper systematically reviews research progress remote from aspects data, inversion models quality parameters. Advantages disadvantages...

In this study, oilfield wastewater (OWW) was used to prepare coal–oilfield wastewater–slurry (COWS), and the apparent viscosity, solid concentration, rheological curve were studied. Compared with original coal–water–slurry (CWS), maximum concentration of COWS increased, viscosity decreased; therefore, slurrying ability coal slurry improved use OWW. However, although oil in OWW promoted slurry, its effectiveness insufficient, a chemical additive still needed obtain enhanced ability. Both CWS...

The flathead gray mullet (Mugil cephalus L.) is a cosmopolitan fish that lives in warm and temperate zones over 42°N-42°S. It key species for industrial fishing off coastal Taiwan. Gray mullets enter the waters of southeastern Taiwan Strait (22°N-25°N) to spawn winter feed tidal China (25°N-30°N). From 1986 2010, annual catch decreased substantially remained low. Although Pacific Decadal Oscillation El Niño-Southern are recognized affect migration, increase sea surface temperature may be...

Thermally significant blood flows into locally cooled diseased tissues and warm them during cryosurgery so that the iceball is often hard to cover whole volume. This paper aimed at investigating effects of large arterial bifurcation on temperature distribution through simulation method. A parametric geometry model introduced construct a close-to-real bifurcation. The three-dimensional transient conjugate heat transfer between bifurcated artery solid with phase change performed by finite...

Toona ciliata is a tree species native to Oceania, Southeast Asia, China and the Indian subcontinent that favoured for production of very high value timber. In this study, potential exogenous application polyamines (PAs) improving ability young trees tolerate drought stress was examined. Two-year-old seedling were treated with foliar sprays three PAs (putrescine (Put), spermidine (Spd) spermine (Spm)) in 1 mM solutions times at intervals one day then exposed by withholding irrigation over...

Nowadays gesture recognition is a hot topic in the field of human-computer interaction (HCI). HCI develop very fast, and also brings surprise to us constantly. In this paper, we propose novel approach based on improved HMMs with entropy recognize 3D gesture. our method, there are two steps gesture: 1. detect key nodes body extracting skeleton point. A low-pass filter utilized smooth trajectory later. 2. We use Hidden Markov Models (HMMs) algorithm which has virtual start node end another...

The emergence of large language models (LLMs) has sparked significant interest in extending their remarkable capabilities to speech. However, modality alignment between speech and text still remains an open problem. Current solutions can be categorized into two strategies. One is a cascaded approach where outputs (tokens or states) separately trained recognition system are used as inputs for LLMs, which limits potential modeling text. other end-to-end that relies on instruction data, very...

As an important migratory bird habitat along the East Asian-Australasian route, coastal wetlands Yellow Sea have experienced significant human losses and threats due to impact of wind farms. In this study, radar data was adopted examine analyse spatial temporal changes human-made characteristic areas that caused change migration route birds in from 2015 2022. The results show zones study area on water Sea, during last 8 years, increased 14 times, 35.7 km2 506.3 km2. land, almost two 303.4...

In the evolving landscape of Neural Machine Translation (NMT), pretrain-then-finetune paradigm has yielded impressive results. However, persistent challenge Catastrophic Forgetting (CF) remains a hurdle. While previous work introduced Continual Learning (CL) methods to address CF, these approaches grapple with delicate balance between avoiding forgetting and maintaining system extensibility. To this, we propose CL method, named $\textbf{F-MALLOC}$ ($\textbf{F}$eed-forward $\textbf{M}$emory...