45 research outputs found
Forensic features and genetic structure of 20 autosomal STR loci in the Han population of Ningde City, Southeastern China
No full textBackground Short tandem repeat (STR) loci are widely used in forensic medicine and population genetics. Aim To profile 20 autosomal STR loci using the SureID® 21 G Human STR Identification Kit. Subjects and methods Samples were obtained from 1412 unrelated Chinese Han individuals from Ningde City, Southeastern China and 20 autosomal STR loci were profiled using the SureID® 21 G Human STR Identification Kit. Results A total of 261 alleles were observed among 1412 unrelated individuals and the corresponding allelic frequencies ranged from 0.5464 to 0.0004. The combined power of discrimination and exclusion of the 20 autosomal STR loci were 0.99999999999999999922 and 0.999999340285752, respectively. There was no significant deviation from Hardy–Weinberg equilibrium (HWE) and minimal departure from linkage equilibrium (LE) for two pairwise combinations of loci after sequential Bonferroni correction. In the population comparison, phylogenetic analysis was performed between the Han population and other relevant populations on the basis of the shared autosomal STR genotyping. Moreover, the neighbor-joining tree and principal component analysis were analysed based on the Nei’s standard genetic distance. Conclusion The population comparison revealed that the structure of the Ningde Han population was similar to the structure of southern Han populations in China and was significantly different to the other Chinese ethnic groups, such as Kyrgyz, Uzbek, Kazakh, Uyghur, Manchu from Xinjiang and Mongols
Community Characteristics and Potential Risk of Nekton in Waters Adjacent to Ningde Nuclear Power Plant in Fujian, China
No full textThe impact of bio-invasions and abnormal aggregations of marine life on the safety of cooling water systems in coastal nuclear power plants (NPPs) is significant and cannot be overlooked. In this study, we conducted 12 consecutive monthly surveys from September 2022 to August 2023 in the waters near Ningde NPP in Fujian, China, focusing on nekton species composition, dominant species, abundance, biomass, and diversity indices. We conducted statistical analyses to examine potential correlations between the community structure of these organisms and environmental factors. We recorded 120 species of nekton that belonged to 20 orders, 57 families, and 92 genera, including 72 species of fish, 23 species of shrimp, 19 species of crabs, and 6 species of cephalopods. Pearson and redundancy analyses showed that pH, DIP, and inorganic nitrogen were the main environmental factors driving the observed temporal changes in the nekton community structure in the seawater intake area. We also found that May to October is the peak period for nekton abundance and biomass, and during this time, there is a high risk of nekton blocking the cooling water system of the NPP. These results are of practical significance for NPP managers to prevent and control the clogging of the cooling water system by marine organisms, and the diversity and abundance data provide a theoretical basis for bioecological restoration and management of the area around the Ningde NPP
Geographical spatial analysis and risk prediction based on machine learning for maritime traffic accidents: A case study of Fujian sea area
No full textSafety analysis according to the spatial distribution characteristics of maritime traffic accidents is critical to maritime traffic safety management. An accident analysis framework based on the geographic information system (GIS) is proposed to characterize the spatial distribution of maritime traffic accidents occurring in the Fujian sea area in 2007–2020 by employing kernel density estimation and spatial autocorrelation techniques. The sea area is divided into various grids, and in each grid, the mapping relationships between the number and severity of the traffic accidents and the traffic characteristics are established. Machine learning (ML) technology is used to assess whether a grid area is an accident-prone area and to predict accident severity in each grid. The accident prediction of different ML models, including random forest (RF) model, Adaboost model, gradient boosting decision tree (GBDT) model, and Stacking combined model, were compared. The optimality of the Stacking combined model was verified by comparing the experimental results of this model with those of classical prediction models, convolutional neural network (CNN), long short term memory (LSTM), and support vector machine (SVM). According to the results, the maritime accident data set of the entire Fujian sea area shows typical clustering characteristics and positive spatial correlation. That is, the kernel density estimation indicates that subareas, including the Ningde sea area, Fuzhou sea area, and Xiamen sea area, generally have high densities of maritime accidents and the highest risk value within the whole Fujian sea area. High-high accident clustering, that is high cluster areas neighbored by other areas of high cluster, is mainly seen in the Ningde and Fuzhou sea areas, while the Xiamen, Putian, and Zhangzhou subareas show low-low clustering, which are low clusters neighbored by low clusters. Among the ML models, the Stacking combined model shows high accuracy, precision, recall, and F1-score values of 0.912, 0.910, 0.912, and 0.904 in predicting whether a grid area is an accident-prone area and 0.750, 0.745, 0.750, and 0.746 in predicting the accident severity in the grid, indicating its superior maritime traffic accident prediction performance. Based on our analysis of the distribution characteristics and geospatial data, our proposed method demonstrates effective and reliable risk prediction.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Safety and Security Scienc
Recreational Fishery Environmental Suggestions of Sandu Island, Ningde, Fujian Province Based on KANO Model and Expert Verification
No full textTourist satisfaction is an important reference in destination management decisions, but on-site validation is often lacking. By exploring the relationship between the current situation of recreational fishery and tourism satisfaction evaluation, we can accurately understand tourists’ consumption preferences and obtain product/service quality information. After on-site verification, such validation is conducive to promoting the high-quality development of regional recreational fisheries. The study area is located on Sandu Island, Ningde City, Fujian Province. This study examines how each item of service quality may exhibit different impacts on customer satisfaction by using a questionnaire survey of consumers in the recreational fisheries. This study combines the Kano model and the Better–Worse index method to investigate the critical service quality. The results show that among the 19 quality indicators of visitor satisfaction, environmental and landscape quality elements are the most important. In addition, through expert verification, it can be confirmed that the improvement of the water environment is of great help to the industry. To improve and maintain customer satisfaction, the above attributes are combined with underlying quality attributes as strategic weapons to highlight competitive advantages
Application of Unmanned Aerial Vehicle Remote Sensing in Surveying and Mapping Engineering
Get PDFThe development of unmanned aerial vehicle remote sensing will inevitably replace the current traditional technical methods. With the continuous improvement of digitalization and automation, it provides technical guarantee for accurate measurement. Therefore, it is very important for the development of surveying and mapping technology in China to strengthen the remote measurement technology of unmanned aerial vehicle (UAV) and make it play its role and advantages in practical application
Anoplophora zibroides Wang & He & Huang 2023, sp. nov.
No full text<i>Anoplophora zibroides</i> sp. nov. Dzṉffƛŧ <p>Figs. 7A–D; 8A–D; 9A–F; 10A–H; 11A–C; 12B; 13E</p> <p> <b>Type material.</b> <b>Holotype:</b> ♁, CHINA, Hunan, Shaoyang City, Chengbu Miao Autonomous County, Baimaoping Town, Shilipingtan [<b>AEħỡďDfflųṃaedzbŃƌàfẉDzϮΨṮṞ</b>], N26.17202° E110.49876°, alt. 1665 m, 20.VII.2022, Liang-Xin Shi leg. (MYNU). <b>Paratypes:</b> 2♁♁ 2♀♀. 1♀, same data as holotype (MYNU); 1♁ 1♀, CHINA, Guangxi, Guilin City, Ziyuan County, Shilipingtan [<b>ŨđfidzbŃLJOEHfflŵãƌϮΨṮṞ</b>], N26.16946° E110.50138°, alt. 1735 m, 27.VII.2022, Liang-Xin Shi leg. (CJBH); 1♁, CHINA, Guangxi, Guilin City, Mt. Jinzi [<b>ŨđfidzbŃLJOEHfflẁŦƜ</b>], alt. 1800 m, 5.VII.2022. (CLYW).</p> <p> <b>Description. Holotype male.</b> Body 18.5 mm long, widest just after elytral humeri (6.3 mm). Head (2.2), antenna (28.2), pronotum (2.9), elytra (12.8); width: head (3.9), pronotal apex (3.7), pronotal base (3.9), elytral humeri (6.1).</p> <p> <i>Habitus</i> (Figs. 7A, B). Body oval. Integumentary colour of body and appendages blackish; eyes brownish black; elytra blackish with weak blue sheen. Frons, genae, vertex and temples mostly clothed with bluish white pubescence. Scape and pedicel clothed with inconspicuous bluish white pubescence, and inserted with some moderately long, suberect, blackish brown setae; antennomeres III–XI annulated by bluish white pubescence at bases and clothed with brownish pubescence in remaining parts; annulations gradually decreasing and paling apically. Pronotum clothed with bluish white pubescence except glabrous center part, inserted with some moderately long, suberect, blackish brown setae in lateral parts. Scutellum covered with bluish white pubescence except along mid-line. Elytra evenly covered with blackish brown setae; each elytron provided with 6 transverse bands of bluish white pubescence: band 1 rather narrow, along basal margin; band 2 inconspicuous, at about basal 1/7; band 3 broad, at about basal 2/7; band 4 broad, around middle; band 5 relatively narrow, at about apical 1/4; band 6 narrow, along apical margin. Ventral surface mostly clothed with bluish white pubescence. Legs, including tarsal dorsum, mostly clothed with bluish white pubescence, but with blackish brown pubescence on apical parts of femora and tibiae.</p> <p> <i>Head</i> subcylindrical, 1.8 times wider than long, widest after posterior margins of lower eye lobes, slightly narrowed posteriorly. Vertex, frons and genae densely covered with fine punctures, interstices microreticulate. Anteclypeus membranous, transverse, without setae or evident punctures; anterior margin substraight. Frons with fine median groove extending from anterior margin to occiput. Vertex moderately concave; antennal tubercles prominent.</p> <p> <i>Mouthparts</i>. Labrum wider than long, covered with short grayish white setae on dorsal surface; anterior margin gently emarginate. Mandible short, regularly arcuate at outer margin. Maxillary and labial palpi with ultimate palpomeres fusiform, truncated at apices.</p> <p> <i>Antennae</i> relatively short, 1.5 times as long as body, with apical four antennomeres exceeding elytral apices. Antennomeres with length ratio from base to tip: 5.36–1.00–7.65–7.18–6.12–5.41–5.02–4.79–4.33–4.05–4.64. Scape subcylindrical, robust, gradually thickening towards apex, with distinct cicatrix. Pedicel knob-like, short, distinctly thinner than scape. Antennomere III the longest, 1.3 times longer than pronotum, 1.4 times longer than scape and 1.1 times longer than IV. Antennomeres III–X straight, gradually decreasing in length. Antennomere XI arcuate, 1.1 times longer than X.</p> <p> <i>Thorax.</i> Pronotum subcylindrical, base almost as wide as apex, 0.8 times as long as basal width, widest at lateral spines. Lateral spine stout, with subacute apex laterally directed and slightly retrousse. Posteromedial callus moderately developed and elevated. Surface with some coarse punctures between lateral spine and posteromedial callus. Scutellum lingulate, rounded at apex. Surface micropunctuated. Elytra semi-oval, 2.1 times as long as humeral width, widest just after humeri. Humeral width 1.6 times wider than pronotal base. Lateral margin almost gradually narrowing towards conjointly rounded apices; sutural angle round. Surface with granules in about basal 1/3, sparsely covered with coarse punctures, interstices microreticulate.</p> <p> <i>Legs</i>. Femora moderately stout; metafemora reaching posterior margin of abdominal sternite VI. Tibiae moderately long; protibiae gently incurvate around apical 1/3; meso- and metatibiae straight. Tarsomere I the longest, but not longer than II+III; III deeply bilobed.</p> <p> <i>Ventral side</i>. Prosternum smooth; prosternal process almost smooth, slightly emarginate at apical margin. Mesosternal process without middle tubercle. Metaventrite with fine median sulcus. Metanepisternum wedge-like, distinctly narrowing posteriorly; anterior margin widely rounded; ventral margin gently incurved at anterior part.</p> <p> <i>Abdomen</i>. Abdominal tergite VII (Fig. 8C) subrounded, shallowly emarginate at posterior margin; tergite VIII (Fig. 9A) subhexagonal, slightly emarginate at posterior margin, distinctly depressed on dorsal surface (Fig. 9C). Abdominal sternites densely and finely punctate; sternite VII (Fig. 8D) subtrapezoidal, almost straight at posterior margin; sternite VIII (Fig. 9B) with sclerotised area cordiform, distinctly emarginate at middle of posterior margin. Spiculum gastrale (Figs. 9D, E) with stem 2.0 times longer than branches; stem substraight, and strongly curved at base in lateral view (Fig. 9F).</p> <p> <i>Male genitalia</i>. Tegmen (Figs. 10A, B) widest at middle, moderately curved ventrally in lateral view (Fig. 10C); ringed part narrow at base; parameres 1/5 length of tegmen, relatively short, gradually convergent towards round apex, apex with dense long setae (Fig. 10D). Median lobe (Figs. 10E, F) a little shorter than tegmen, distinctly curved ventrally in lateral view (Fig. 10G); dorsal plate (Fig. 10H) gradually narrowed towards apex, rounded at apical margin; ventral plate (Fig. 10H) longer than dorsal plate, widest at middle, gradually narrowed towards apex, and rounded at apical margin; basal struts (Figs. 10E, F) 2/5 length of median lobe.</p> <p> <b>Male paratypes.</b> Body 18.4–20.6 mm long. All male types have the same body color, without evident variations.</p> <p> <b>Female paratypes.</b> Body 18.3–19.4 mm long, widest just after elytral humeri (6.7 mm). Length of different body parts (n = 2, average value, mm): head (2.3), antenna (24.6), pronotum (3.1), elytra (13.8); width: head (4.3), pronotal apex (4.2), pronotal base (4.3), elytral humeri (6.2). Antennomeres with length ratio from base to tip: 5.82–1.00–7.39–7.15–6.46–5.31–5.27–4.69–4.31–3.48–4.24.</p> <p>Similar to male in general appearance (Figs. 7C, D), but distinct by the following characters: body somewhat larger; antennae much shorter, about 1.3 times as long as body, with apical two antennomeres exceeding elytral apices; abdominal tergite VII (Fig. 8A) with large posterior apodemes, widely and roundly emarginate in middle of posterior margin; sternite VII (Fig. 8B) subtrapezoidal, distinctly and subtriangularly emarginate at posterior margin; sternite VIII (Fig. 11B) with sclerotised area suboblong; tignum (Figs. 11A–C) about 7.8 mm, distinctly sinuate in lateral view, shorter than abdomen; spermatheca (Fig. 12B) short, stout, globular. spermathecal gland (Fig. 12B) relatively short.</p> <p> <b>Etymology.</b> The Latin adjective “ <i>zibroides</i> ” means “zebra like”, referring to the banded color pattern of the elytra of the new species. “ <b>ṀḦAEk†</b> (Pinyin: Ban Ma Xing Tian Niu)” is proposed for the Chinese common name of this new species.</p> <p> <b>Host plant.</b> <i>Symplocos</i> trees [<b>ƜOiRDzhv</b>] (Fig. 13D).</p> <p> <b>Field observations.</b> Living female is shown in Fig. 13E and habitat at Shilipingtan is shown in Fig. 13C.</p> <p> <b>Distribution.</b> China (Hunan and Guangxi).</p> <p> <b>Differential diagnosis.</b> <i>Anoplophora zibroides</i> <b>sp. nov.</b> belongs to <i>bowringii</i> / <i>lurida</i> / <i>beryllina</i> species group. The larger size, the present of pale annulate antennomere bases, the large cicatrix of scape, and the irregularlysized and spaced elytral granules distinguish the new species from <i>A. lurida</i> (Pascoe, 1857), and these characters are shared with <i>A. beryllina</i> (Hope, 1840) and <i>A. bowringii</i> (White, 1858). <i>A. zibroides</i> <b>sp. nov.</b> with lateral spines of pronotum distinctly stouter, directing laterally; basal granules of elytra distinctly sparser. While the latter two species with lateral spines of pronotum somewhat more slender, directing lateroposteriorly; basal granules of elytra distinctly denser. Moreover, the new species has greyish white to bluish white pubescence, while most <i>A. bowringii</i> has blue pubescence with turquoise being less common and <i>A. beryllina</i> has turquoise pubescence being more common. And the new species has 3–4 glabrous rows on the elytron, while <i>A</i>. <i>beryllina</i> commonly has 8 rows, and <i>A. bowringii</i> has 5–6 rows.</p> <p>The following species and material was studied for comparison:</p> <p> <b> <i>Anoplophora rugicollis</i> Wang, Xie & Wang, 2022.</b> 1♀ (Figs. 2B, F), VIETNAM, no specific locality data (CJBH).</p> <p> <b> <i>Anoplophora freyi</i> (Breuning, 1947).</b> 5♁♁ 7♀♀, CHINA, Sichuan, Chengdu City, Pengzhou, at the side of Xiaofu Road [<b>ṪKǿ</b>], N31.16940° E103.89488°, alt. 870 m, 21.VII.2018, Li He & Chao Zhou legg. (CLHC); 3♁♁ 5♀♀, CHINA, Sichuan, Aba Tibetan and Qiang Autonomous Prefecture, Wenchuan County, Gengda Town [<b>ṚỀDz</b>], N31.10° E103.33°, alt. 1650 m, 1.X.2020, Li He, Yuan Li, Zhen Wang & Ze-Yu Li legg. (CLHC); 3♁♁ 3♀♀, ditto except 7.VIII.2021, Li He & Zhen Wang legg. (CLHC); 2♁♁ 2♀♀ (Figs. 2C, G), ditto except alt. 1790 m, 18.VIII.2022, Li He & Zhen Wang legg. (CLHC); 1♁, Sichuan, Chengdu City, Chenghua District, Shengdeng Park [<b>AEḢn'ȁ</b>], 14.VIII.2022. (CLHC).</p> <p> <b> <i>Anoplophora puxian</i> Wang & He, 2021.</b> 1♁, “ Holotype ”, CHINA, Sichuan, Leshan City, Emeishan, Mt. Emei, Leidongping [<b>ǾĀẉ</b>], N29.54019° E103.33146°, alt. 2430 m, 26.VII.2020, Li He, Yuan Li & Zhen Wang legg. (MYNU); 1♀ (Figs. 2D, H), “ Paratype ”, ditto except 25.VII.2020 (CLHC); 1♁, “ Paratype ”, CHINA, Sichuan, Leshan City, Emeishan, Mt. Emei, Xixiangchi [<b>ÑƟḿ</b>], alt. 2060 m, 26.VII.2020, picked around light, Yuan Li & Zhen Wang legg. (CLHC).</p> <p> <b> <i>Anoplophora beryllina</i> (Hope, 1840).</b> 1♁, CHINA, Yunnan, Xishuangbanna Dai Autonomous Prefecture, Jinghong City, Jinuoshan Village, Jinuoshanzhai [<b>WDZƜ ⁂</b>], alt. 1000 m, 15.V.2022, Chao-Tai Wei leg. (CLHC); 1♁ 1♀, Yunnan, Pu’er City, Simao District, Nanping Town, Baizhisi [<b>ffiffƛ</b>], alt. 1100 m, 14.VII.2021, Gui-Rong Zhang leg. (CLHC).</p> <p> <b> <i>Anoplophora bowringii</i> (White, 1858).</b> 7♁♁ 9♀♀, CHINA, Guangxi Zhuang Autonomous Region, Laibin City, Jinxiu County, Changdong Township, Pingban Village [<b>ṮIJḤ</b>], N24.11° E110.18°, alt. 1100–1380 m, V – VII.2015, Jin-Teng Zhao leg. (CLHC); 1 ♁ 1♀, CHINA, Fujian, Ningde City, Gutian County, Shitashan [<b>ƂḆ Ɯ</b>], N26.84247° E118.63524°, alt. 1340 m, 9.VII.2020, Jian-Bin Huang leg. (CJBH).</p>Published as part of <i>Wang, Cheng-Bin, He, Li & Huang, Jian-Bin, 2023, Two new species of Anoplophora Hope, 1839 from China (Coleoptera, Cerambycidae, Lamiinae), pp. 165-181 in Zootaxa 5277 (1)</i> on pages 173-180, DOI: 10.11646/zootaxa.5277.1.8, <a href="http://zenodo.org/record/7893137">http://zenodo.org/record/7893137</a>
Comparative Study on the Diffusion of Thermal Discharge from Coastal Power Plants in Different Geographical Environments
No full textThe diffusion characteristics of thermal discharge from coastal power plants were studied by analyzing the Ningde Nuclear Power Plant and Kemen Power Plant, which are located in different geographical regions in China. The former is in the open sea, and the latter is in a well-sheltered bay. In the vicinity of the outfall areas of the two power plants, large-area surface temperature observations and tidal current observations were conducted. The results indicate that the thermal discharge diffusion characteristics of coastal power plants located in different geographical environments are significantly different. In the well-sheltered sea area of the Kemen Power Plant, the water temperature diffuses faster along the coast, in line with the direction of tidal movement, and slower in the offshore direction under the influence of rectilinear tidal currents within the bay, resulting in a significantly greater longitudinal diffusion distance of thermal discharge along the shore than the transverse diffusion distance offshore. In the area surrounding the Ningde Nuclear Power Plant, rotational currents diffuse the thermal discharge in various directions, causing the range of temperature rise to expand toward the outer sea. Dominant tidal currents within the tidal cycle in the sea area can influence the distribution of high-temperature rise zones near outfalls. The distribution of high-temperature rise zones predominantly occurs on the side with the higher average tidal velocity, either the ebb tide side if its velocity is greater than that of the flood tide or the flood tide side otherwise
Identification of Oil-Gas-Water Three-phase Flow Patterns in Vertical Upward Pipe Based on Multi-scale Entropy
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