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| 1 | Heterosis and combining ability evaluation for growth traits of blunt snout bream(Megalobrama amblycephala)when crossbreeding three strains显示文摘The blunt snout bream(Megalobrama amblycephala)is a major aquaculture species in the Chinese freshwater polyculture system.In this study,complete diallel crossing of three strains(i.e.,Liangzi[LZ],Poyang[PY]and Yuni[YN])was used to evaluate the combining ability and heterosis effect of intraspecific crossbreeding on the growth performance(i.e.,body weight,total length,body length,body height,and Fulton’s coefficient of condition).The offspring produced from the three strains were reared in a communal pond for 20 months,and nine microsatellites were used to assess their pedigree.Of the749 offspring,708(94.53%)could be assigned directly to a single parental pair.Significant differences were observed in body weight(BW)among the different combinations,indicating that the combining ability of BW from each strain was significantly different.The general combining ability(GCA)of BW from the sire was much higher than that from the dam.The GCA for the dam and sire of the LZ and YN were the largest and the smallest,respectively.The special combining ability of YN$9 PY#was the largest,and YN$9 PY#showed significantly positive heterosis effects on all F1growth traits,except for Fulton’s condition coefficient(K)(P\0.05).In addition,significant positive linear correlations were found between the mean BW of corresponding progeny and the H E of the parental generation(y=600.7x-29.472,r=0.8651,P=0.0026),H O(y=1206.9x-518.14,r=0.7436,P=0.0216),and the polymorphism information content(y=1021.3x-331.31,r=0.8245,P=0.0063)as determined by a correlative test.The findings obtained from the study will be important for future considerations of M.amblycephala stock improvement programs. | Wei Luo Cong Zeng Shaokui Yi Nicholas Robinson Weimin Wang Zexia Gao | 2014 | Chinese Science Bulletin2014，59，9： | 7 |
| 2 | Preoperative diagnosis and staging of rectal cancer using diffusion?weightedand water imaging combined with dynamic contrast?enhanced scanning显示文摘 | Qili Zhao Lijian Liu Qiuyan Wang Zexia Liang Gaofeng Shi | 2014 | Oncology Letters2014，，： | 1 |
| 3 | Morphological studies of peripheral blood cells of the Chinese sturgeon,Acipenser sinensis显示文摘 | Zexia G Weimin W Yi Y | | 0，，03： | 1 |
| 4 | Molecular characterization of trypsinogens and development of trypsinogen gene expression and tryptic activities in grass carp(Ctenopharyngodon idellus)and topmouth culter(Culter alburnus)显示文摘 | RUAN Guoliang LI Yang GAO Zexia | | 0，，： | 1 |
| 5 | Haematological characterization of loach Misgurnus anguillicaudatus : Comparison among diploid, triploid and tetraploid specimens显示文摘 | Zexia Gao Weimin Wang Khalid Abbas Xiaoyun Zhou Yi Yang James S. Diana Hanping Wang Huanling Wang Yang Li Yuhua Sun | 2007 | Comparative Biochemistry and Physiology Part A2007，，4： | 1 |
| 6 | Compounding effects of human activities and climatic changes on coexistence of oasis-desert ecosystems:Prioritizing resilient decision-making for a riskier world显示文摘Water-salt balance is critical for the stable coexistence of salt-affected and groundwater-fed oasis-desert ecosystems. Yet, a comprehensive investigation of how soil salinization and groundwater degradation threaten the coexistence of oasis-desert ecosystems is still scarce, especially under the compounding effects of human activities and climatic changes. Here, we assessed the impacts of irrigated agriculture on hydrological regimes in oasisdesert systems, investigated the spatio-temporal variations of soil salinization in irrigated cropland, and evaluated the implications of the interplays of soil salinization and groundwater degradation on the coexistence of oasis-desert ecosystems in northwestern China, based on meaningful modelling approaches and comprehensive measurements over 1995–2020. The results showed that the irrigation return flow coefficient decreased sharply from 0.21 ± 0.09 in the traditional irrigation period to 0.09 ± 0.01 in the water-saving irrigation period. The continuous drop in groundwater tables and significant degradation of groundwater quality are occurring throughout this watershed. The eco-environmental flows are reaching to their limit with watershed closures(i.e.,the drainage from the oasis region into the desert region is being weakened or even eliminated), although these progressions were largely hidden by regional precipitation and streamflow variability. The process of salt migration and accumulation across different landscapes in oasis-desert system is being reshaped, and soil salinization in water-saving agricultural irrigated lands is accelerating with a regional average annual growth rate of18%. The vegetation in this watershed is degrading, and anthropogenic disturbance accelerates this trend. Our results highlight that environmental stress adaptation strategies must account for resilience maintenance to avoid accelerating catastrophic transitions in oasis-desert ecosystems. Determining the optimal oasis scales and formulating the best irrigation management plans are effective and resilient decision-making ways to maintain the coexistence relationship of oasis-desert ecosystem in drylands. | XinWei Yin Wei Liu Meng Zhu JuTao Zhang Qi Feng HaiYang Xi LinShan Yang Tuo Han WenJu Cheng YingQing Su BaiTing Zhang YuanYuan Xue ZeXia Chen LingGe Wang | 2023 | Research in Cold and Arid Regions2023，15，5： | 0 |
| 7 | A data-driven machine learning approach for yaw control applications of wind farms显示文摘This study proposes a cost-effective machine-learning based model for predicting velocity and turbulence kineticenergy fields in the wake of wind turbines for yaw control applications.The model consists of an auto-encoderconvolutional neural network(ACNN)trained to extract the features of turbine wakes using instantaneous datafrom large-eddy simulation(LES).The proposed framework is demonstrated by applying it to the Sandia NationalLaboratory Scaled Wind Farm Technology facility consisting of three 225 kW turbines.LES of this site is performedfor different wind speeds and yaw angles to generate datasets for training and validating the proposed ACNN.It is shown that the ACNN accurately predicts turbine wake characteristics for cases with turbine yaw angleand wind speed that were not part of the training process.Specifically,the ACNN is shown to reproduce thewake redirection of the upstream turbine and the secondary wake steering of the downstream turbine accurately.Compared to the brute-force LES,the ACNN developed herein is shown to reduce the overall computational costrequired to obtain the steady state first and second-order statistics of the wind farm by about 85%. | Christian Santoni Zexia Zhang Fotis Sotiropoulos Ali Khosronejad | 2023 | Theoretical & Applied Mechanics Letters2023，13，5： | 0 |
| 8 | Optimal Recovery of Functions on the Sphere on a Sobolev Spaces with a Gaussian Measure in the Average Case Setting显示文摘In this paper, we study optimal recovery(reconstruction) of functions on the sphere in the average case setting. We obtain the asymptotic orders of average sampling numbers of a Sobolev space on the sphere with a Gaussian measure in the Ld-1q(S) metric for 1 ≤ q ≤∞, and show that some worst-case asymptotically optimal algorithms are also asymptotically optimal in the average case setting in the Ldq(S-1)metric for 1 ≤ q ≤∞. | Zexia Huang Heping Wang | 2015 | Analysis in Theory and Applications2015，31，2： | 0 |
| 9 | Measuring solar irradiance profiles in the Arctic sea ice using fiber optic spectrometry via inclined holes显示文摘An irradiance profile measurement approach and profiling system were developed to measure the solar irradiance profile of the Arctic sea ice using fiber optic spectrometry.The approach involved using a miniature spectrometer to sense light signals collected and transmitted from a fiber probe.The fiber probe was small,and could thus move freely in inclined bore holes drilled in sea ice with its optical entrance pointing upward.The input-output relationship of the system was analyzed and built.Influence factors that determined the system output were analyzed.A correctional system output approach was proposed to correct the influence of these factors,and to obtain the solar irradiance profile based on the measurements outputted by this system.The overall performance of the system was examined in two ice floes in the Arctic during the 9th Chinese National Arctic Research Expedition.The measured solar irradiance profiles were in good agreement with those obtained using other commercially available oceanographic radiometers.The derived apparent optical properties of sea ice were comparable to those of similar sea ice measured by other optical instruments. | Zexia Qiu Hangzhou Wang Tao Li Hong Song Yuanqian Wu Tingting Yan Ying Chen | 2021 | Acta Oceanologica Sinica2021，40，3： | 0 |
| 10 | The genetic basis of the leafy seadragon's unique camouflage morphology and avenues for its efficient conservation derived from habitat modeling显示文摘The leafy seadragon certainly is among evolution’s most“beautiful and wonderful”species aptly named for its extraordinary camouflage mimicking its coastal seaweed habitat.However,limited information is known about the genetic basis of its phenotypes and conspicuous camouflage.Here,we revealed genomic signatures of rapid evolution and positive selection in core genes related to its camouflage,which allowed us to predict population dynamics for this species.Comparative genomic analysis revealed that seadragons have the smallest olfactory repertoires among all ray-finned fishes,suggesting adaptations to the highly specialized habitat.Other positively selected and rapidly evolving genes that serve in bone development and coloration are highly expressed in the leaf-like appendages,supporting a recent adaptive shift in camouflage appendage formation.Knock-out of bmp6 results in dysplastic intermuscular bones with a significantly reduced number in zebrafish,implying its important function in bone formation.Global climate change-induced loss of seagrass beds now severely threatens the continued existence of this enigmatic species.The leafy seadragon has a historically small population size likely due to its specific habitat requirements that further exacerbate its vulnerability to climate change.Therefore,taking climate change-induced range shifts into account while developing future protection strategies. | Meng Qu Yingyi Zhang Zexia Gao Zhixin Zhang Yali Liu Shiming Wan Xin Wang Haiyan Yu Huixian Zhang Yuhong Liu Ralf Schneider Axel Meyer Qiang Lin | 2023 | Science China(Life Sciences)2023，66，6： | 0 |
| 11 | Large-eddy simulation of flash flood propagation and sediment transport in a dry-bed desert stream显示文摘A Large-Eddy Simulation(LES)model is used to study flow dynamics of a flash flood event in a dry-bed,desert wash,the so-called Tex Wash,near the Tex Wash Bridge on Interstate 10 in the Mojave Desert of California.The evolving free surface of the flash flood is tracked using the level-set method.A bed morphodynamics module is coupled to the hydrodynamics model to calculate the erosion and bed evolution of the mobile bed of the wash under flash flood conditions.Flash floods in a desert wash can be characterized with a number of salient features such as the(1)existence of both the dry-and wet-cells on the bed surface of the wash that correspond to the air and water phases,respectively;(2)presence of various flow regimes,critical,sub-critical,and super-critical in the flow domain;and(3)occurrence of a highly transient and complicated flow field and,subsequently,sediment dynamics throughout the wash.A numerical modeling effort is presented to study a recorded flash flood and the corresponding scour processes in the Tex Wash.The flood event occurred in 2015 and lead to the collapse of the Tex Wash Bridge.The of the current study is to gain insight into the flood flow and sediment transport mechanisms,which resulted in the collapse of the bridge.To that end,a study area,which includes a 0.65 km-long reach of TexWash at its intersection with the Tex-Wash Bridge,was selected.The bathymetry of the wash was obtained using light-detection-and-ranging(LiDAR)technology and used to construct the computational domain of the wash and bridge foundations.The transient flow of the flash flood,in both air and water phases,and the evolving morphology of the wash are numerically simulated.The sitespecific numerical simulation revealed the formation of deep scour regions adjacent to the right abutment of the upstream bridge,where significant erosion caused the collapse of the bridge.Moreover,the results show that most of the scour processes take place during the steady phase of the flash flood when the desert stream is filled with water.However,the transient phase of the flash flood is rather short and contributes to a very limited amount of erosion within the stream. | Ali Khosronejad Kevin Flora Zexia Zhang Seokkoo Kang | 2020 | International Journal of Sediment Research2020，35，6： | 0 |
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