Abstract Animals with radial symmetry are abundant in the Cambrian Fortunian Stage of South China, but relatively low diversity: representatives include Olivooides , Quadrapyrgites carinachitiids, hexangulaconulariids and Pseudooides . Here, we report a new animal, Qinscyphus necopinus gen. et sp. nov., from small shelly fauna southern Shaanxi Province, China. has cup‐shaped profile, slightly raised annuli five groups triangular thickenings pentaradial symmetry. This organism comparable...

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTIsolation and Identification of Two Bis(2-ethylheptyl) Benzenedicarboxylates from Lingwu CoalZi-Wu Liu†‡, Zhi-Min Zong†, Jin-Na Li†, Cai-Fa Chen§, Hong Jiang§, Yao-Li Peng†, Jia-Qi Xue‡, Xiao-Lin Yang‡, Yu-Xuan Zheng†, Xiao Zhou†, Rui-Lun Xie†, Xian-Yong Wei*†∥View Author Information School Chemical Engineering, China University Mining Technology, Xuzhou, Jiangsu 221008, China, Xuzhou Number 1 Middle School, 221002, The Key Laboratory...

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTIsolation and Identification of Methyl Alkanoates from Lingwu CoalZi-Wu Liu†‡, Xian-Yong Wei*†§, Zhi-Min Zong†, Jin-Na Li†, Jia-Qi Xue∥, Xue-Feng Chen∥, Fei-Jian Chen†View Author Information† Key Laboratory Coal Processing Efficient Utilization (Ministry Education), China University Mining Technology, Xuzhou 221008, Jiangsu, China‡ School Chemistry Chemical Engineering, South Wushan 381, Guangzhou 510640, Guangdong, China§ Hubei Conversion...

The multi-disc wet clutch is widely used in transmission systems as it transfers the torque and power between gearbox driving engine. During service, buckling of friction components inevitable, which can shorten lifetime decrease vehicle performance. Therefore, fault diagnosis online monitoring are required to identify state components. However, unlike other rotating machinery, time-domain features vibration signal lack efficiency for clutch. This paper aims present a new method based on...

This paper proposes a smart handheld textural sensing medical device with complementary Machine Learning (ML) algorithms to enable on-site Colorectal Cancer (CRC) polyp diagnosis and pathology of excised tumors. The proposed unique edge benefits from tactile module dual-stage machine learning (composed dilated residual network t-SNE engine) for type stiffness characterization. Solely utilizing the occlusion-free, illumination-resilient images captured by sensor, framework is able sensitively...

Purpose: In its cognitive, relational, and structural forms, social capital has been identified as a powerful strategic tool. However, prior empirical studies focus only on the direct effect of various dimensions address relational at either dyadic level or network level. Drawing theory theory, this study fills above-mentioned gaps by examining role performance through exploring interaction effects simultaneously revealing moderating levels (including business ties political ties)...

Abstract Some rare microscopic cycloneuralians are present in the Cambrian of South China, represented by Eopriapulites and Eokinorhynchus (both early Cambrian), fossil embryos Markuelia (middle to late palaeoscolecids (early Cambrian). Among them, relatively diverse abundant. Here, we describe new material three-dimensionally phosphatized from Paibian Stage Wangcun Lagerstätte, western Hunan, China. New includes assignable sp., two other types embryos, three species palaeoscolecids,...

Pied Avocets (Recurvirostra avosetta) are common migratory shorebirds in the East Asian–Australasian Flyway. From 2019 to 2021, GPS/GSM transmitters were used track 40 nesting northern Bohai Bay identify annual routines and key stopover sites. On average, southward migration of started on 23 October arrived at wintering sites (mainly middle lower reaches Yangtze River coastal wetland) southern China 22 November; Northward March with arrival breeding 7 April. Most avocets same between years,...

Developing hybrid aerial-aquatic vehicles that can interact with water surfaces while remaining aloft is valuable for various tasks, including ecological monitoring, quality sampling, and search rescue operations. Storm petrels are a group of pelagic seabirds exhibit unique locomotion pattern known as 'pattering' or 'sea-anchoring,' which hypothesized to support forward and/or stationary posture at the surface. In this study, we use morphological measurements three storm petrel species...

A kind of double closed-loop servo control strategy is presented in this paper to realize accurate and fast position tracking throttle valve for the automobile electronic system (ETCS). The structure includes an extended state observer (ESO) compensating total disturbances resulted from nonlinearities friction return springs uncertainties some physical parameters, two PI-type controllers with disturbance compensators outer loop inner current loop. proposed scheme featured by transforming...

Abstract Electric Tracing Technology at the Pipeline Center is widely used in development of peripheral oil fields. However, problems faced include low simulation accuracy, high equipment investment, and energy consumption for operation. Initially, we analyzed friction heating effects caused by insertion electric cables into Center. This analysis was based on laws mass, momentum, conservation. Consequently, established a model calculating steady-state temperature pressure gathering pipeline,...

Abstract Maikhanellids are a distinct group of Cambrian Fortunian small shelly fossils by the cap‐shaped profiles and scaly shell ornamentation. According to individual shape ornamentation feature types SO maikhanellids which were collected from Xixiang botia, we confirmed family Maikhanellidae content six genera, Maikhanella, Ramenta, Purella, Ramentoides, Yunnannopleura Mediata. Unlike halkieriid animals whose shells spicules articulated on different body parts, presumably yielded...

We describe Tethys, an energy-harvesting wireless water flow sensor that can monitor use at a per-fixture level with the intention of associating specific individuals. Tethys was motivated by recent efforts Stanford University to reduce due California drought. Understanding how university population uses per-person greatly influence policies and conservation approaches. Bluetooth Smart both identify individuals as well asynchronously upload data cloud for later analysis. two challenges...

Purpose This study aims to investigate the role of network in affecting private firms’ internationalization decision. Specifically, it investigates way that business ties, political ties and status influence an Design/methodology/approach On basis survey data collected from Chinese firms, this distinguishes introduces status. Binary logistic regression is used test hypotheses. Findings Results show firms have are more likely internationalize, whereas less internationalize. High-status...

This paper investigates the effects of disc deformation on tilting-induced vibration a splined spinning with axial-fixed boundaries.The purpose is to provide an intuitive interpretation variance wet clutch system different deformed discs. First, tilting models flat and discs are derived by introducing distinctive shape functions. Additionally, inner spline interface chosen as friction boundary. Then, impact model between pairs rigid boundary established adopting Hertz’s contact theory....

Abstract The multi-disc wet clutch is widely used in high-power vehicles and large construction machinery due to its capacity for high torque transfer compact efficiency. However, the early-stage failure such as buckling of friction disk hard detect since external performance not obvious, which can impair reliability system largely. This paper presents an online fault diagnosis method based on vibration signal analysis deformation components. A bench test designed acquire pack with four...

An adaptive energy management control strategy is proposed for a commuter plug-in hybrid electrical vehicle (PHEV) during car-following process in this paper. The (EMS) an instantaneous optimization integrating behavior performance index into equivalent consumption minimization (A-ECMS). In order to achieve better fuel economy and safety under different scenarios, the factor (EF) of ECMS weight cost function are designed as forms Map tables about battery state charge (SOC) travel distance....

Abstract Frac-packing has been widely used in the development of unconsolidated sandstone reservoirs because it can meet needs stimulation and sand control. In this work, induced stress generated by artificial fracture was taken into consideration to simulate geo-structure a frac-packing well. The fluid-structure coupling model utilized solve reservoir distribution, critical equivalent plastic strain introduced determine whether element damaged. Using proposed model, comparison between...