To assess the impact of marine environment on community fish eggs in Daya Bay, we collected egg samples across four seasons during 2022. A total 51 species were gathered. The exhibited significant seasonal and spatial variations. number was highest spring lowest winter, while overall abundance peaked summer. from large economic (Sparidae) showed a declining trend; however small pelagic (Leiognathidae, Engraulidae) have become dominant over time. Spatially, higher is observed inner bay...

Plate heat exchangers have the advantages of high transfer coefficients and compact structures, they are widely used in aerospace, nuclear power, other fields. Nevertheless, several scalability challenges emerged during utilization process. If not addressed promptly, issue will reduce efficiency, consequently causing energy waste, diminished production capacity, a shortened lifespan. In this study, we employed long short-term memory (LSTM) algorithm model multi-layer perceptron (MLP) to...

Abstract DNA barcodes were studied for 1,353 specimens representing 272 morphological species belonging to 149 genera and 55 families of Perciformes from the South China Sea ( SCS ). The average Kimura 2‐parameter (K2P) distances within species, 0.31%, 8.71% 14.52%, respectively. A neighbour‐joining NJ ) tree, Bayesian inference BI maximum‐likelihood ML trees Automatic Barcode Gap Discovery ABGD revealed 260, 253 259 single‐species‐representing clusters, Barcoding gap analysis BGA...

Abstract The success of the bioenergy industry will depend, in part, on enough biomass feedstocks being grown. To increase reliability supply, a government can offer two types subsidy program: farmer program (FSP) and producer (PSP). We develop models to analyze optimal by capturing interactions between government, producer, farmers. incorporate budget constraint, environmental benefits from use bioenergy, farmer's risk aversion land capacity as well yield uncertainty feedstocks. findings...

The Beibu Gulf is one of the most important fishing grounds in South China Sea (SCS), and fisheries resources this area are exploited by both Vietnam. In recent decades, some indications overfishing have appeared, including declining catch rates, frequently changing composition, shrinking body sizes main commercial fish species. Due to limited data availability, only a small subset stocks has been assessed. Here, we applied two length-based methods, electronic length frequency analysis...

Abstract The hydraulic exoskeleton is one research hotspot in the field of robotics, which can take heavy load due to high power density system. However, traditional system normally centralized, inefficient, and bulky during application, limits its development exoskeleton. For improving robot’s performance, actuating should be optimized further. In this paper a novel (HAS) based on electric-hydrostatic actuator proposed, applied hip knee joints. Each HAS integrates an electric servo motor,...

The Beibu Gulf is considered as one of China’s four major fishing grounds, although the substantial overexploitation fisheries has led to collapse many fish stocks, and changes spawning grounds in recent decades. Classifying eggs an important way monitor recruitment process identify sites fish. However, lack a basis for morphological identification difficulties correctly identifying based on characteristics limited scientific studies. In present study, we identified using molecular detection...

With the aging of baby boomers, it is predicted that US population over age 65 will grow from its 1999 level 34.6 million persons to approximately 82 in 2050, a 137% increase. The most rapid surge our senior take place between 2011 and 2030. During this 19-year interval, seniors expand 13% 22% population. In project, goal design wireless sensor system, Health Tracker 2000, can monitors users' vital signs notifies relatives medical personnel their location during life threatening situations....

A planar ignitor-based on low temperature co-fired ceramic (LTCC) and pyrotechnical micro electro mechanical system (PyroMEMS) technologies was designed prepared in this paper. The ignitor is mainly composed of output charge layer, silicon safe arm (Si-S&A) LTCC circuit base. Si/Pb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> , C xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> H...

Although species of Decapterus form important pelagic fisheries in the northern South China Sea, information on their spawning grounds is limited because identification fish eggs based morphology difficult. We identify four (D.macrosoma, D.maruadsi, D.macarellus, and D.tabl) with DNA barcodes from fishery resources surveys Spring Autumn 2018 Xisha islands, later summer-Autumn 2019 along continental shelf describe egg morphology. Of 1405 obtained COI sequences, 81 were successfully attributed...

Abstract Structured catalysts coatings exhibit excellent performance on non‐adiabatic gas–solid process, deriving from their enhanced heat and mass transfer properties. However, the coating prepared by traditional hydrothermal method of zeolite encapsulating noble metal are prone to spalling, especially under conditions large flow rate high temperature. Herein, we PtZn clusters encapsulated in silicalite‐1 stainless steel with bonding strength an improved situ growth method. The optimized...

Abstract The asymmetric vinylogous Mukaiyama aldol reaction between α‐keto phosphonate and 2‐(trimethylsilyloxy)furan was performed by using bis(oxazoline)‐copper complexes as the catalyst 2,2,2‐trifluoroethanol additive in dichloromethane. present method is highly tolerable for functionalized phosphonates enabled us to obtain corresponding 3‐ 4‐substituted benzyl‐functionalized tertiary α‐hydroxy high yields (up 86%) well enantiostereoselectivities 98% ee ) diastereoselectivities 99:1, anti...

Purpose The purpose of this paper is to propose a risk-sharing model coordinate the decision-making behavior players in cassava-based bioethanol supply chain under random yield and demand environment, so as mitigate uncertainty risk improve resiliency performance. Design/methodology/approach three models, namely, centralized model, decentralized are analyzed. An empirical test advantages feasibility proposed well risk, coefficients randomly fluctuating cassava market price on performances...