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| 1 | Laboratory culture of the freshwater benthic gastropod Bellamya aeruginosa (Reeve) and its utility as a test species for sediment toxicity显示文摘This study aimed to develop original laboratory culture and sediment toxicity testing protocols for the freshwater gastropod Bellamya aeruginosa(Reeve),a new potential species for sediment toxicity testing.B.aeruginosa was successfully cultured with an effective culture system under proposed laboratory conditions.Optimal ad libitum feeding levels for larvae,juveniles,and adults were 2.0,6.0,and 16.0 mg fish food/(snail·day),respectively.Mean survival rates of juveniles were higher than 90%.The snails could be sexed at 9 weeks of age,and their generation time is approximately 4 months.Reproduction continued all year around;the mean fecundity was 0.55 newborn/(female·day).The utility of this species for bioassays was evaluated in both 10-day and 28-day case studies with artificial sediments.The 10-day LC50 of Cu for larvae was 480 μg/g dry weight(dw),and the lowest observed effects concentration of Cu for survival and growth of larvae was 195 μg/g dw.Survival and growth are reliable indicators of acute toxicity.Larvae accumulated more Cu than adults.B.aeruginosa exhibited a higher sensitivity to Cu exposure than standard test species(Hyalella azteca and Chironomus tentans).The 28-day test of sediment toxicity with adults showed that fecundity was a robust endpoint indicator of reproductive toxicity,and the biochemical endpoints of superoxide dismutase,catalase,and glutathione could be used as sensitive biomarkers for Cu-induced oxidative damage.B.aeruginosa can be therefore recommended as a candidate for the standardization of the freshwater sediment toxicity test protocol. | Taowu Ma Shuangjiao Gong Ke Zhou Cheng Zhu Kaidong Deng Qinghua Luo Zijian Wang | 2010 | Journal of Environmental Sciences2010，22，2： | 22 |
| 2 | The first airborne scalar gravimetry system based on SINS/DGPS in China显示文摘China has developed an airborne gravimetry system based on SINS/DGPS named SGA-WZ,the first system in which a strapdown inertial navigation system(SINS)has been used for airborne gravimetry in China.This gravity measurement system consists of a strap-down inertial navigation system and a differential global positioning system(DGPS).In April 2010,a flight test was carried out in Shandong Province of China to test the accuracy of this system.The test was designed to assess the repeatability and accuracy of the system.Two repeated flights and six grid flights were made.The flying altitude was about 400 m.The average flying speed was about 60 m/s,which corresponds to a spatial resolution of 4.8 km when using 160-s cutoff low-pass filter.This paper describes the data processing of the system.The evaluation of the internal precision is based on repeated flights and differences in crossover points.Gravity results in this test from the repeated flight lines show that the repeatability of the repeat lines is 1.6 mGal with a spatial resolution of 4.8 km,and the internal precision of grid flight data is3.2 mGal with a spatial resolution of 4.8 km.There are some systematic errors in the gravity results,which can be modeled using trigonometric function.After the systematic errors are compensated,the precision of grid flight data can be better than1 mGal. | CAI ShaoKun WU MeiPing ZHANG KaiDong CAO JuLiang | 2013 | Science China Earth Sciences2013，56，12： | 12 |
| 3 | Effect of supplementation of allicin on methanogenesis and ruminal microbial flora in Dorper crossbred ewes显示文摘Background: Garlic extracts have been reported to be effective in reducing methanogenesis. Related mechanisms are not well illustrated, however, and most studies have been conducted in vitro. This study investigates the effects of supplementary allicin(AL) in sheep diet on in vivo digestibility, rumen fermentation, and shifts of microbial flora.Methods: Two experiments were conducted using Dorper × thin-tailed Han crossbred ewes. In experiment 1,eighteen ewes(60.0 ± 1.73 kg BW) were randomly assigned for 29 days to either of two dietary treatments: a basal diet or the basal diet supplemented with 2.0 g AL/head?day to investigate supplementary AL on nutrient digestibility and methane emissions. In experiment 2, six ewes(65.2 ± 2.0 kg BW) with ruminal canulas were assigned to the same two dietary treatments as in experiment 1 for 42 days to investigate supplementary AL on ruminal fermentation and microbial flora. The methane emissions were determined using an open-circuit respirometry system and microbial assessment was done by q PCR of 16 S r RNA genes.Results: Supplementary AL increased the apparent digestibility of organic matter(P < 0.001), nitrogen(P = 0.006),neutral detergent fiber(P < 0.001), and acid detergent fiber(P = 0.002). Fecal nitrogen output was reduced(P = 0.001)but urinary nitrogen output was unaffected(P = 0.691), while nitrogen retention(P = 0.077) and nitrogen retention/nitrogen intake(P = 0.077) tended to increase. Supplementary AL decreased methane emissions scaled to metabolic bodyweight by 5.95 %(P = 0.007) and to digestible organic matter intake by 8.36 %(P = 0.009). Ruminal p H was unaffected(P = 0.601) while ammonia decreased(P = 0.024) and total volatile fatty acids increased(P = 0.024) in response to supplementary AL. Supplementary AL decreased the population of methanogens(P = 0.001) and tended to decrease that of protozoans(P = 0.097), but increased the populations of F. succinogenes(P < 0.001), R. flavefaciens(P = 0.001), and B. fibrisolvens(P = 0.001).Conclusions: Supplementation of AL at 2.0 g/head?day effectively enhanced OM, N, NDF, and ADF digestibility and reduced daily methane emissions(L/kg BW0.75) in ewes, probably by decreasing the population of ruminal protozoans and methanogens. | Tao Ma Dandan Chen Yan Tu Naifeng Zhang Bingwen Si Kaidong Deng Qiyu Diao | 2016 | Journal of Animal Science and Biotechnology2016，7，2： | 9 |
| 4 | Packet routing algorithm for polar orbit LEO satellite constellation network显示文摘Broadband satellite networks are capable of providing global coverage and support various services. The networks constructed by Low Earth Orbit (LEO) satellite constellations have attracted great interests because of their short round-trip delays and wide bandwidths. A challenging problem is to develop a simple and efficient packet routing algorithm for the LEO satellite constellation network. This paper presents a SpiderWeb Topological Network (SWTN) and a distributed packet routing algorithm for the LEO satel-lite constellation network based on the SWTN. The algorithm gives the minimum propa-gation delay paths with low computational complexity and requires no routing tables, which is practical for on-board processing. The performance of the algorithm is demon-strated through simulations. | WANG Kaidong YI Kechu TIAN Bin WU Chengke | 2006 | Science in China(Series F)2006，49，1： | 3 |
| 5 | Effect of catalyst structure on oxidative dehydrogenation of ethane and propane on alumina-supported vanadia显示文摘 | Morris D Argyle Kaidong Chen Alexis T Bell | 2002 | J Catal2002，208，： | 2 |
| 6 | LogPruner: detect, analyze and prune logging calls in Android apps显示文摘Dear editor,Android is a popular mobile operating system that is accounted for more than 87%of all smartphone sales in the second quarter of 2017.The number of available apps hosted in Google play store has reached to 3.5 M at the end of 2017 and is still.In developing apps,developers usually use log messages for debugging and diagnosing their apps in order to fix bugs or locate the performance bottlenecks[1,2].At release stage,the logging messages should be muted for security consideration and higher performance.However, | Xin ZHOU Kaidong WU Huaqian CAI Shuai LOU Ying ZHANG Gang HUANG | 2018 | Science China(Information Sciences)2018，61，5： | 2 |
| 7 | The relationship between microbial N synthesis and urinary excretion of purine derivatives in Dorper<ce:hsp sp='0.25'/>×<ce:hsp sp='0.25'/>thin-tailed Han crossbred sheep显示文摘 | Tao Ma Kaidong Deng Chenggang Jiang Yan Tu Naifeng Zhang Jie Liu Yiguang Zhao Qiyu Diao | 2012 | Small Ruminant Research2012，，： | 1 |
| 8 | Combined effects of ascorbic acid and chitosan on the quality maintenance and shelf life of plums显示文摘 | Kaidong Liu Changchun Yuan Yan Chen Haili Li Jinxiang Liu | 2014 | Scientia Horticulturae2014，，： | 1 |
| 9 | Microstructure and interfacial evaluation of Co-based alloy coating on copper by pulsed Nd:YAG multilayer laser cladding显示文摘 | YAN HUA WANG AIHUA XU KAIDONG | 2010 | Journal of Alloys and Compounds2010，，505： | 1 |
| 10 | 显示文摘 | Zhong Ziyi Chen Kaidong Ji Yong | 1997 | Applied Catalysis A: General1997，156，： | 1 |
| 11 | Microstructure and interfacial evaluation of Co-based alloy coating on copper by pulsed Nd:YAG multilayer laser cladding显示文摘 | Hua Yan Aihua Wang Kaidong Xu Wenyan Wang Zaowen Huang | 2010 | Journal of Alloys and Compounds2010，，2： | 1 |
| 12 | Kinetic isotopic effects in oxidative dehydrogenation of propane on vanadium oxide catalysts显示文摘 | Kaidong Chen Enrique Iglesia Alexis T Bell | 2000 | J Catal2000，192，1： | 1 |
| 13 | Isotopic tracer studies of reaction pathways for propane oxidative dehydrogenation on molybdenum oxide catalysts显示文摘 | Kaidong Chen Enrique Iglesia Alexis T Bell | 2001 | The journal of physical chemistry2001，105，3： | 1 |
| 14 | The relationship between the electronic and redox properties of dispersed metal oxides and their turnover rates in oxidative dehydrogenation reactions显示文摘 | Kaidong Chen Alexis T Bell | 2002 | J Catal2002，209，1： | 1 |
| 15 | CO hydrogenation over nanometer spinel-type Co/Mn complex oxides prepared by sol-gel method 显示文摘 | Liang Qi Chen Kaidong Hou Wenhua | 1998 | Applied Catalysis A:General1998，166，： | 1 |
| 16 | Partial oxidation of toluene over ultrafine mixed Mo-based oxide particles 显示文摘 | Kuang Wenxing Fan Yining Chen Kaidong | 1999 | Journal of Catalysis1999，186，2： | 1 |
| 17 | Kinetic isotopic effects in oxidative dehydrogenation of propane on vanadium oxide catalysts 显示文摘 | Chen Kaidong Iglesia E Bell A T | 2000 | Journal of Catalysis2000，，192： | 1 |
| 18 | Kinetic isotopic effects in oxidative dehydrogenation of propane on vanadium oxide catalysts显示文摘 | Chen Kaidong Iglesia E Bell A T | | 0，，： | 1 |
| 19 | Kinetic isotopic effects in oxidative dehydrogenation of propane on vanadium oxide eat-alysts显示文摘 | Bell A T Chen Kaidong Iglesia E | 2000 | Journal of Catalysis2000，192，： | 1 |
| 20 | Structures of signaling complexes of lipid receptors S1PR1 and S1PR5 reveal mechanisms of activation and drug recognition显示文摘Sphingosine-1-phosphate(S1P)is an important bioactive lipid molecule in cell membrane metabolism and binds to G proteincoupled S1P receptors(S1PRs)to regulate embryonic development,physiological homeostasis,and pathogenic processes in various organs.S1PRs are lipid-sensing receptors and are therapeutic targets for drug development,including potential treatment of COVID-19.Herein,we present five cryo-electron microscopy structures of S1PRs bound to diverse drug agonists and the heterotrimeric Gi protein.Our structural and functional assays demonstrate the different binding modes of chemically distinct agonists of S1PRs,reveal the mechanical switch that activates these receptors,and provide a framework for understanding ligand selectivity and G protein coupling. | Yuan Yuan Guowen Jia Chao Wu Wei Wang Lin Cheng Qian Li Ziyan Li Kaidong Luo Shengyong Yang Wei Yan Zhaoming Su Zhenhua Shao | 2021 | Cell Research2021，31，12： | 1 |
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