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Open Journal of Soil Science 2024年第1期14卷 115-132页

作者： Mamadou Toure Kpan Kouakou Gains Kpan N’guetta Moïse Ehouman Seydou Tiho Laboratory of Ecology and Sustainable development (LEDD) Department of Natural Sciences (UFR SN) University Nangui ABROGOUA Abidjan C&#244te d’Ivoire

The roads in correlation with the traffic linked to their existences are at the origin of the emission of numerous polluting substances likely to induce disturbances of the growth and the behavioral changes in the organisms living in their vicinities. The purpose of this study is to analyze the growth and capacity accumulation of a common earthworm species (Millsonia omodeoi) in Cu, Cr, Ni, Pb and Zn in soils along a main road called “Autoroute du Nord” in C?te d’Ivoire. Thus, the earthworms were harvested in soils from a distance of 0 m (just after the sidewalk) to a distance of 200 m from the toll highway and in a control soil sampled in Lamto reserve (C?te d’Ivoire). The study was carried out in the soil laboratory at the ecological station of Lamto reserve. The Ford-Walford technique was used to determine the model and parameters most appropriated for describing the growth of earthworms. A pairwise comparison of the growth parameters was carried out using the Kruskal-Wallis test with the STATISTICA 7.1 software. The heavy metals contained in the cultivated soils and earthworms were detected and quantified using a Scanning Electron Micro-scope (MEB FEG Supra 40 vp Zeiss) and an Atomic Absorption Spectrometer SPECTRA 110 (VARIAN). The capacity accumulation of heavy metals in earthworm was determined by the bioaccumulation factor (BAF) calculation. The results of this study showed that Gompertz is the most appropriated model to describe the growth of M. omodeoi. The life cycle of M. omodeoi shows that this earthworm adopts a K type demographic strategy. Cu is the most accumulated heavy metals in M. omodeoi, when Cr is the least accumulated. Concerning heavy metal content in the earthworms, it decreases while moving away from the pavement. These results highlight a possibility of choice of M. omodeoi as 1) indicators of heavy metals pollution and 2) target of biological organisms for environmental impact studies.

关键词： M. omodeoi Bioaccumulation Heavy Metals “Autoroute du Nord” Côte d’Ivoire

口蹄疫病毒等小RNA病毒可通过一种共性机制操纵细胞加速病毒复制

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中国兽医科学 2024年第7期54卷 993-993页

作者： Ruoqing Mao Zixiang Zhu Fan Yang Dehui Sun Xiaoli Zhou Weijun Cao Xiaodong Qin Wen Dang Huanan Liu Hong Tian Keshan Zhang Qingfeng Wu Xiangtao Liu Haixue Zheng State Key Laboratory for Animal Disease Control and Prevention College of Veterinary Medicine Lanzhou University Lanzhou Veterinary Research Institute Chinese Academy of Agricultural Sciences Lanzhou China. Analysis and Test Group Center for Technical Development and Analysis Service Institute of Modern Physics Chinese Academy of Sciences Lanzhou China.

小RNA病毒是RNA病毒中最小的类群。这种病毒的颗粒为直径22~30 nm的正二十面体,无包膜,并且含有29%~32%的连续线型单链RNA。小RNA病毒科的主要成员包括口蹄疫病毒(FMDV)、脊髓灰质炎病毒(PV)、塞内卡病毒(SVA)、埃可病毒、柯萨奇病毒等... 详细信息

小RNA病毒是RNA病毒中最小的类群。这种病毒的颗粒为直径22~30 nm的正二十面体,无包膜,并且含有29%~32%的连续线型单链RNA。小RNA病毒科的主要成员包括口蹄疫病毒(FMDV)、脊髓灰质炎病毒(PV)、塞内卡病毒(SVA)、埃可病毒、柯萨奇病毒等,能引起多种人或动物传染性疾病,对人和动物的健康构成威胁。小RNA病毒的vp3蛋白是病毒结构中的关键组成部分,尤其在口蹄疫病毒、脊髓灰质炎病毒和塞内卡病毒等病毒中,vp3蛋白被视为病毒复制和致病过程中的关键毒力因子。

关键词：口蹄疫病毒 vp3蛋白病毒结构脊髓灰质炎病毒小RNA病毒致病过程病毒复制毒力因子

NUMERICAL EVALUATION OF THE PRINTABILITY OF PAPER SURFACES

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天津科技大学学报 2004年第A2期19卷 348-352页

作者： Roger Danby vp Forming Development AstenJohnson 48 Richardson Side RoadKanata ON Canada K2K 1X2

This paper describes a technique that numerically defines the print quality potential of a sheet of paper through density measurements BEFORE it is shipped, by measurement of the micro-density of the *** technique can be used to quantify the differences between two sides of a sheet of paper, between batches produced at different times on the same machine or to compare the same grade from different sources.

关键词：数值估计适印性纸表面图象分析密度计算机模拟

Dental Resin Filling Materials and Their Trends

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Dental Resin Filling Materials and Their Trends

Vehicle Positioning Based on Optical Camera Communication in V2I Environments

中华口腔医学会口腔材料学专业委员会第七次全国口腔材料学术交流会

作者：贾为涛 Consultant and Executive vp CJ Multi-Tech EnterprisesInc.(US) Vice President of Research and development Pentron Clinical Technology(US)

In the past two decades,restorative dentistry has seen a remarkable evolution of the technology behind composite resins,which are rapidly becoming the preferred material of choice in clinical practice,especially in the US *** continuing research and development of new generation dental resin materials,however,are still

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Computers, Materials & Continua 2022年第8期72卷 2927-2945页

作者： Pankaj Singh Huijin Jeon Sookeun Yun Byung Wook Kim Sung-Yoon Jung Department of Electronic Engineering Yeungnam UniversityGyeongsan38541Korea HD Map development Team Hyundai Autoever Co.Ltd.Seoul06171Korea Department of Information and Communication Engineering Changwon National UniversityChangwon51140Korea

Demand for precise vehicle positioning(vp)increases as autonomous vehicles have recently been drawing *** paper proposes a scheme for positioning vehicles on the move based on optical camera communication(OCC)technology in the vehicle-to-infrastructure(V2I)***-emitting diode(LED)streetlights and vehicle cameras are used as transmitters and receivers *** of streetlights are detected and traced by examining images that are obtained from cameras of ***,a scheme for analyzing visible light data extracted from the images is *** proposed vehicle positioning scheme uses information on angles between vectors that are formed under the collinearity conditions between the absolute coordinates of at least three received streetlights,and the coordinates of an image *** experiments are performed under stationary state and moving state at a speed of 5 and 20 km/*** verify the reliability of the proposed scheme,a comparison is made between the actual and estimated location of the camera in the stationary *** addition,the path of a moving vehicle and the estimated path of the vehicle are compared to check the performance of the *** performance of the proposed technique is analyzed and experimental demonstration confirms that the proposed OCC-based vp scheme achieves positioning accuracy of under 1 m.

关键词： Optical camera communication vehicle-to-infrastructure LED streetlight intelligent transport system vehicle positioning collinearity

P-wave and S-wave response of coal rock containing gas-water with different saturation: an experimental perspective

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Frontiers of Earth Science 2023年第1期17卷 100-108页

作者： Dameng LIU Lijing LI Zheng ZHAO Wei CHEN Yidong CAI Yongkai QIU Yingfang ZHOU School of Energy Resources China University of GeosciencesBeijing 100083China Coal Reservoir Laboratory of Natural Engineering Research Center of CBM development&Utilization China University of GeosciencesBeijing 100083China Beijing Furuibao Energy Technology Company Beijing 100176China School of Engineering King’s CollegeUniversity of AberdeenAB243UE AberdeenUK

The acoustic response of gas and/or water saturated coal rock is fundamental for establishing the correspondence between the physical properties of the coal reservoir and the characteristics of the well-logging response,which is the technology essential for the geophysical exploration of coalbed methane(CBM).This acoustic response depends on water(Sw)and gas(Sg)saturation among other *** this study,we performed acoustic tests on dry and different gas-water saturated coal samples with different degrees of metamorphism and deformation,collected from several coal mining areas in *** tests enabled us to analyze the influence of coal type and gas-water saturation on the acoustic response of CBM *** results show that the acoustic velocity of P-wave and S-wave(vp and Vs,respectively),and the relative anisotropy of and Vs,increased with increasing vitrinite reflectance,density,vp and *** increasing from 0 to 100%,the growth rate of the acoustic velocity decreased with increasing vitrinite *** vp/Vs ratio of tectonic coal was generally higher than that of primary *** growth rate of the relative anisotropy in tectonic coal was markedly higher than that in primary coal.

关键词： coal rock gas-water water saturation acoustic velocity relative anisotropy

Dependence of Size and Morphology on Shear Flow for PS-based Amphiphilic Block Copolymer Micelles in Aqueous Solution

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Chinese Journal of Polymer Science 2017年第5期35卷 641-648页

作者：王志达 Chang-feng Yan Ying Huang Li-qi Yi Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of Sciences Guangdong Key Laboratory of New and Renewable Energy Research and development University of Chinese Academy of Sciences

This contribution focuses on the impact of shear flow on size and nanostructure of PS-based amphiphilic block copolymer （BC） micelles by varying the stirring rate and copolymer composition. The results show that the vesicles formed from diblock copolymer （di-BC） of PS-b-PAA remain with vesicular morphology, although the average size decreases, with the increase of stirring rate. However, the multi-compartment micelles （MCMs） formed from tri-block copolymer （tri-BC） of PS-b-P2vp-b-PEO are quite intricate, in which the copolymer first self-assembles into spheres, then to clusters, to large compound micelles （LCMs）, and finally back to spheres, as stirring rate increases from 100 r/min to 2200 r/min. Formation mechanism studies manifest that vesicles form simultaneously as water is added to the di-BC solution, termed as direct- assembly, and remain with vesicular structure in the flowing process. While for the PS-b-P2vp-b-PEO copolymer, spherical micelles at initial stage can further assemble into clusters and LCMs, termed as second-assembly, due to the speeding-up- aggregation of the favorable stirring. As a result, an invert V-relationship between tri-BC micelle dimension and stirring rate is observed in contrast to the non-linear decreasing curve of di-BC vesicles. It is by investigating these various amphiphilic BCs that the understanding of shear dependence of size and morphology of micelles is improved from self-assembly to second-assembly process.

关键词： Self-assembly Shear Size Nanostructure Block copolymer

Metabolic and performance responses of male runners wearing 3 types of footwear: Nike Vaporfly 4%, Saucony Endorphin racing flats, and their own shoes

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Journal of Sport and Health Science 2022年第3期11卷 275-284页

作者： Kim Hébert-Losier Steven J.Finlayson Matthew W.Driller Blaise Dubois Jean-François Esculier Christopher Martyn Beaven Division of Health EngineeringComputing and ScienceTe Huataki Waiora School of HealthUniversity of WaikatoMount MaunganuiTauranga 3116New Zealand Sport and Exercise Science School of Allied HealthHuman Services and SportLa Trobe UniversityMelbourneVIC 3086Australia Research&development the Running ClinicLac-BeauportQC G3B 2J8Canada

Purpose We compared running economy(RE)and 3-km time-trial(TT)variables of runners wearing Nike Vaporfly 4%(vp4),Saucony Endorphin lightweight racing flats(FLAT),and their habitual running(OWN)*** Eighteen male recreational runners(age=33.5±11.9 year(mean±SD),peak oxygen uptake(VO_(2peak))=55.8±4.4 mL/kg·min)attended 4 sessions approximately 7 days *** first session consisted of a VO_(2peak) test to inform subsequent RE speeds set at 60%,70%,and 80%of the speed eliciting *** subsequent sessions,treadmill RE and 3-km TTs were assessed in the 3 footwear conditions in a randomized,counterbalanced crossover *** Oxygen consumption(mL/kg·min)was less in vp4(from 4.3%to 4.4%,p≤0.002)and FLAT(from 2.7%to 3.4%,p≤0.092)*** across intensities,with a non-significant difference between vp4 and FLAT(1.0%-1.7%,p≥0.292).Findings related to energy cost(W/kg)and energetics cost of transport(J/kg·m)were ***43-km TT performance(11:07.6±0:56.6 mm:ss)was enhanced *** by 16.6 s(2.4%,p=0.005)and *** by 13.0 s(1.8%,p=0.032).The 3-km times between OWN and FLAT(0.5%,p=0.747)were *** runners(n=11,61%)ran their fastest TT in *** Overall,vp4 improved laboratory-based RE measures in male recreational runners at relative speeds compared to OWN,but the RE improvements in vp4 were not significant *** runners exhibited better treadmill TT performances in vp4(61%)***(22%)and OWN(17%).The variability in RE(-10.3%to 13.3%)and TT(-4.7%to 9.3%)improvements suggests that responses to different types of shoes are individualized and warrant further investigation.

关键词： Footwear Individual responses Minimalist Physiology Running

Control on the Morphology of ABA Amphiphilic Triblock Copolymer Micelles in Dioxane/Water Mixture Solvent

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Chinese Journal of Polymer Science 2018年第6期36卷 728-735页

作者： Yuan Gan Zhi-Da Wang Zhuo-Xin Lu Yan Shi Hong-Yi Tan Chang-Feng Yan Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Guangdong Key Laboratory of New and Renewable Energy Research and development Guangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

This work offers a typical understanding of the factors that govern the nanostructures of poly（4-vinyl pyridine）-b-polystyrene-bpoly（4-vinyl pyridine）（P4 vp-b-PS-b-P4 vp） block copolymers（BCs） in dioxane/water, in which water is a selective solvent for the P4 vp block. It is achieved through an investigation of the amphiphilic triblock copolymer micelles by variation of three different factors, including water content（above CWC but under the immobile concentration）, temperature（ranging from 20 °C to 80 °C）, and copolymer composition（low and high PS block length）. Transition of bead-like micelles to vesicles is observed with the increase of water content due to the increase of interfacial energy between the copolymer and the solvent. Effect of temperature superposed on that of water content results in various morphologies, such as beads, fibers, rods, capsules, toroids, lamellae, and vesicles. The interfacial tension between the BC and the solvent increases with the increase of water content but decreases with the increase of temperature, indicating that the micellar morphologies are resulted from the competitive interplay between the temperature and the water content and always change in a direction that decreases the interfacial energy. Based on the micellar structures obtained in this work and the effects of temperature superposed on water concentration, a diagram of phase evolution of different micellar morphologies is illustrated here, covering the temperature range from 20 °C to 80 °C and the water content changing from 20 vol% to 35 vol%. For the investigation of BC composition, morphological transition of vesicle-to-fiber, for high PS length, is observed as compared with bead-to-capsule for low PS length, as the temperature changes from 20 °C to 80 °C. Our research complements the protocols to control over the morphologies and the phase diagram describing P4 vp-b-PS-b-P4 vp micellar nanostructures in aqueous solution.

关键词： Micelles Morphological control Self-assembly Block copolymer