|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The Arabidopsis PRCl-like ring-finger proteins are necessary for repression of embryonic traits during vegetative growth显示文摘Polycomb 组基因在维护起关键作用 transcriptionally 为在动物和植物的合适的房间区别的基因的 silenced 状态。当时 polycomb 的部件压抑的 complex2 (PRC2 ) evolutionarily 被保存,他们的功能广泛地在植物被学习, PRC1 在动物和植物之间更加不同,并且它在植物的功能是不好迄今为止描述了。以前的研究作为动物 PRC1 子单元 RING1 的相当或相同事物识别了 Arabidopsis AtRING1a 和 AtRING1b。这里,我们证明 Atring1a Atring1b 双异种在植物的生长期间展出胚胎的特点的 derepression。因此,几关键规章的基因在 embryogenesis 包含了,干细胞活动宫外地在异种被表示。而且,我们证明变异的显型和规章的基因的增加的表示被 PRC2 变异的 clf 提高。最后,我们显示出那动物 PRC1 子单元戒指手指蛋白质 BMI1, AtBMI1a, AtBMI1b 和 AtBMI1c 的三个相当或相同事物,罐头与 AtRING1a 或 AtRING1b 绑,并且另外, AtBMI1c 能与 LHP1 绑。Atbmi1a Atbmi1b 双异种显示出类似于 Atring1a Atring1b 双异种的胚胎的特点的 derepression。有趣地, AtBMI1a, AtBMI1b 和 AtBMI1c 的表示层次在 Atring1a Atring1b 异种被提高,那些在 Atbmi1a Atbmi1b 异种 AtBMI1c, AtRING1a 和 AtRING1b 被提高,建议自我规章的反馈机制。一起拿,我们的结果为合适的体的生长在胚胎的特点和规章的基因的稳定的压抑照亮象 PRC1 一样戒指手指部件的关键功能。 | Donghong Chen Anne Molitor Chunlin Liu Wen-Hui Shen | 2010 | Cell Research2010，20，12： | 19 |
| 2 | Combining CLUE-S and SWAT Models to Forecast Land Use Change and Non-point Source Pollution Impact at a Watershed Scale in Liaoning Province, China显示文摘Non-point source(NPS) pollution has become a major source of water pollution. A combination of models would provide the necessary direction and approaches designed to control NPS pollution through land use planning. In this study, NPS pollution load was simulated in urban planning, historic trends and ecological protection land use scenarios based on the Conversion of Land Use and its Effect at Small regional extent(CLUE-S) and Soil and Water Assessment Tool(SWAT) models applied to Hunhe-Taizi River Watershed, Liaoning Province, China. Total nitrogen(TN) and total phosphorus(TP) were chosen as NPS pollution indices. The results of models validation showed that CLUE-S and SWAT models were suitable in the study area. NPS pollution mainly came from dry farmland, paddy, rural and urban areas. The spatial distribution of TN and TP exhibited the same trend in 57 sub-catchments. The TN and TP had the highest NPS pollution load in the western and central plains, which concentrated the urban area and farm land. The NPS pollution load would increase in the urban planning and historic trends scenarios, and would be even higher in the urban planning scenario. However, the NPS pollution load decreased in the ecological protection scenario. The differences observed in the three scenarios indicated that land use had a degree of impact on NPS pollution, which showed that scientific and ecologically sound construction could effectively reduce the NPS pollution load in a watershed. This study provides a scientific method for conducting NPS pollution research at the watershed scale, a scientific basis for non-point source pollution control, and a reference for related policy making. | LIU Miao LI Chunlin HU Yuanman SUN Fengyun XU Yanyan CHEN Tan | 2014 | Chinese Geographical Science2014，24，5： | 15 |
| 3 | 2,5-Furandicarboxylic acid production via catalytic oxidation of 5-hydroxymethylfurfural:Catalysts,processes and reaction mechanism显示文摘Biomass conversion to value-added chemicals has received tremendous attention for solving global warming issues and fossil fuel depletion.5-Hydroxymethylfurfural(HMF)is a key bio-based platform molecule to produce many useful organic chemicals by oxidation,hydrogenation,polymerization,and ring-opening reactions.Among all derivatives,the oxidation product 2,5-furandicarboxylic acid(FDCA)is a promising alternative to petroleum-based terephthalic acid for the synthesis of biodegradable plastics.This review analytically discusses the recent progress in the thermocatalytic,electrocatalytic,and photocatalytic oxidation of HMF into FDCA,including catalyst screening,synthesis processes,and reaction mechanism.Rapid fundamental advances may be possible in non-precious metal and metal-free catalysts that are highly efficient under the base-free conditions,and external field-assisted processes like electrochemical or photoelectrochemical cells. | Chunlin Chen Lingchen Wang Bin Zhu Zhenqiang Zhou Soliman I.El-Hout Jie Yang Jian Zhang | 2021 | Journal of Energy Chemistry2021，30，3： | 9 |
| 4 | Hybrid MDP based integrated hierarchical Q-learning显示文摘As a widely used reinforcement learning method,Q-learning is bedeviled by the curse of dimensionality:The computational complexity grows dramatically with the size of state-action space.To combat this difficulty,an integrated hierarchical Q-learning framework is proposed based on the hybrid Markov decision process (MDP) using temporal abstraction instead of the simple MDP.The learning process is naturally organized into multiple levels of learning,e.g.,quantitative (lower) level and qualitative (upper) level,which are modeled as MDP and semi-MDP (SMDP),respectively.This hierarchical control architecture constitutes a hybrid MDP as the model of hierarchical Q-learning,which bridges the two levels of learning.The proposed hierarchical Q-learning can scale up very well and speed up learning with the upper level learning process.Hence this approach is an effective integral learning and control scheme for complex problems.Several experiments are carried out using a puzzle problem in a gridworld environment and a navigation control problem for a mobile robot.The experimental results demonstrate the effectiveness and efficiency of the proposed approach. | CHEN ChunLin DONG DaoYi LI Han-Xiong TARN Tzyh-Jong | 2011 | Science China(Information Sciences)2011，54，11： | 9 |
| 5 | Speciation analysis of metals (Tl,Cd and Pb) in Tl-containing pyrite and its cinder from Yunfu Mine,China,by ICP-MS with sequential extraction显示文摘The speciation of heavy metals such as thallium,cadmium and lead existing in pyrite and pyrite cinder was analyzed by ICP-MS with a sequential extraction procedure.The distribution patterns of these metals including exchangeable,reducible,oxidizable and residual fractions were obtained.Tl,Cd and Pb in pyrite and pyrite cinder samples from each extraction step were determined by inductively coupled plasma mass spectrometry(ICP-MS).Under the optimized instrumental conditions,detection limits of Tl,Cd and Pb in different matrices were within the range of 0.006-0.07 μg/L,and the relative standard deviations ranged from 0.8% to 1.2%.The accuracy of Tl,Cd and Pb determination was checked by analyzing two certified reference materials.The results demonstrate that trace Tl,Cd and Pb in the samples can be accurately determined.The sequential extraction results revealed that the percent contents of Tl,Cd and Pb in exchangeable,reducible and oxidizable fractions in pyrite cinder are different from those in pyrite and in pyrite cinder.Tl,Cd and Pb mostly are distributed in residual fraction.Therefore,the mobility of metals in pyrite is higher than that in pyrite cinder.Although distributions of Tl,Cd and Pb in the non-residual fraction are not dominant in pyrite cinder,the total concentrations of them could not be ignored.Consequently,attention must be paid to the risk of potential pollution by pyrite cinder. | WANG Chunlin CHEN Yongheng PAN Jianyang ZHANG Ping QI Jianying LIU Juan LI Xiangping WANG Jin | 2010 | Chinese Journal Of Geochemistry2010，29，1： | 9 |
| 6 | A study of morphing aircraft on morphing rules along trajectory显示文摘Morphing aircraft can meet requirements of multi-mission during the whole flight due to changing the aerodynamic shape,so it is necessary to study itsmorphing rules along the trajectory.However,trajectory planning considering morphing variables requires a huge number of expensive CFD computations due to the morphing in view of aerodynamic performance.Under the given missions and trajectory,to alleviate computational cost and improve trajectory-planning efficiency formorphing aircraft,an offline optimizationmethod is proposed based onMulti-Fidelity Kriging(MFK)modeling.The angle of attack,Mach number,sweep angle and axial position of the morphing wing are defined as variables for generating training data for building the MFK models,in which many inviscid aerodynamic solutions are used as low-fidelity data,while the less high-fidelity data are obtained by solving viscous flow.Then the built MFK models of the lift,drag and pressure centre at the different angles of attack andMach numbers are used to predict the aerodynamic performance of the morphing aircraft,which keeps the optimal sweep angle and axial position of the wing during trajectory planning.Hence,themorphing rules can be correspondingly acquired along the trajectory,aswell as keep the aircraftwith the best aerodynamic performance during thewhole task.The trajectory planning of amorphing aircraft was performed with the optimal aerodynamic performance based on the MFK models,built by only using 240 low-fidelity data and 110 high-fidelity data.The results indicate that a complex trajectory can take advantage of morphing rules in keeping good aerodynamic performance,and the proposed method is more efficient than trajectory optimization by reducing 86%of the computing time. | Xiaoyu CHEN Chunna LI Chunlin GONG Liangxian GU Andrea Da RONCH | 2021 | Chinese Journal of Aeronautics2021，34，7： | 8 |
| 7 | Grey systems for intelligent sensors and information processing显示文摘In a measurement system,new representation methods are necessary to maintain the uncertainty and to supply more powerful ability for reasoning and transformation between numerical system and symbolic system.A grey measurement system is discussed from the point of view of intelligent sensors and incomplete information processing compared with a numerical and symbolized measurement system.The methods of grey representation and information processing are proposed for data collection and reasoning.As a case study,multi-ultrasonic sensor systems are demonstrated to verify the effectiveness of the proposed methods. | Chen Chunlin Dong Daoyi Chen Zonghai Wang Haibo | 2008 | Journal of Systems Engineering and Electronics2008，19，4： | 7 |
| 8 | Cretaceous Volcanic Events in Southeastern Jilin Province,China:Evidence from Single Zircon U-Pb Ages显示文摘摘要:在东南的吉林省的中生代暴烈的岩石是在东北区域的巨大的中生代暴烈的带的一个重要部件。他们的形成的年龄的学习意义大在东北中国认出中生代暴烈的统治。与在西方的辽宁的稀罕中生代生物区系和广泛的中生代矿化作用的研究一起,很多个研究人员集中了于中生代暴烈的事件。作者用单个锆石 U-Pb 在东南的吉林省学习了白垩纪暴烈的岩石的年龄。在 Tonghua 区域的 Sankeyushu 形成暴烈的岩石是 119.2 妈在的结果表演变老,在 Jiutai 区域的 Yingcheng 形成 113.4 吗?? | CHEN Yuejun SUN Chunlin SUN Yuewu SUN Wei | 2008 | Acta Geologica Sinica(English Edition)2008，82，6： | 7 |
| 9 | Pore throat characteristics of tight sandstone of Yanchang Formation in eastern Gansu,Ordos Basin显示文摘An important factor to evaluate reservoir quality is the pore-throat size.However,the strong heterogeneity makes it difficult to characterize the pore-throat distribution in tight reservoirs.The field emission scanning electron microscope(FESEM),high pressure mercury injection and rate-controlled mercury injection are used to investigate the pore-throat size distribution in tight sandstone reservoirs of Member 7 of the Yanchang Formation in eastern Gansu,Ordos Basin,and studies of the pore throat size controlling on physical property of the tight sandstone reservoirs are also carried out.The result shows that the pore type is mainly dominated by the residual intergranular pore,dissolution pore,micropore and a few micro-fractures;the high-pressure mercury injection experiment indicates that the pore-throat size ranges from 0.0148 μm to 40mm,the pore throat more than 1 mm is less;the ratecontrolled mercury injection experiment reveals that for samples with different physical properties,the pore radius mainly varies from 80 μm to 350 μm;the throat radius exhibits the strong heterogeneity,and is from 0.12 μm to 30μm;the pore-throat size can be effectively characterized by combination of high-pressure and rate-controlled mercury injections,and it varies from 0.0148 μm to 350 μm.The permeability is mainly controlled by the large pore throat(>R_(50))which accounts for a small proportion;in the tight sandstone with the permeability greater than 0.1 mD,the permeability is mainly controlled by the micropore and mesopore;in the tight sandstone with the permeability smaller than 0.1 mD,the permeability is mainly controlled by the nanopore and micropore;the proportion of small pore throat increases with reduction of permeability,it is important that the small pore throat influences the reservoir storage property though its effect on permeability are small. | Hao Wu Chunlin Zhang Youliang Ji Rui'e Liu Shang Cao Sheng Chen Yunzhao Zhang Ye Wang Wei Du Gang Liu | 2018 | Petroleum Research2018，3，1： | 7 |
| 10 | Listeria monocytogenes Mutants Carrying Newcastle Disease Virus F Gene Fused to its actA and plcB:In vitro Expression and Immunogenicity in Chickens显示文摘Recombinant Listeria monocytogenes 异种带纽卡斯尔疾病病毒(NDV ) 熔化蛋白质基因 F 被相应 recombination.NDV F 构造或它的截断的碎片 Fa 被用作他们的信号序列下游地集成于行为 A 或 plcB 的模型 heterologous 基因。插入的基因的正确取向被 F 的聚合酶链反应扩大验证或 Fa.The 插入了 F, Fa 在由钠 dodecylsulfate-polyacrylamide 凝胶电泳(SDS 页) 和蛋白质印迹出现的二 recombinantsLm 三角洲 actA-F 和 Lm 三角洲 plcB-Fa 被表示。展出的两 recombinants 作为与父母相比由大约 1.5-2.5 木头把毒力归结为受胎的鸡蛋和老鼠野紧张 10403S .Theywere 另外不比紧张 10403S (P<0.05 ) 侵略。因为对相应病毒紧张或 recombinant 的抗体乳头 ers 截断了熔化蛋白质,口头上地或 intraperitoneally 收到 recombinant 紧张的鸡部分由于非特定的免疫的改进可能被保护免受剧毒的 NDV 挑战的伤害是边缘的。进一步的研究在另外的动物模型被需要看低抗体反应是否由于 L.monocytogenes 或它的 recombinants 的失败源于 theheterologous 基因的不够的表示在鸡坚持或复制。 | Lingli JIANG Chunlin KE Jingjing XU Jianshun CHEN Xueyan CHEN Ning CHEN Jiangbing SHUAI and Weihuan FANG Institute of Preventive Veterinary Medicine,and Zhejiang Provincial Key Laboratory for Preventve Veterinary Medicine,Zhejiang University,Hangzhou 310029,China | 2007 | Acta Biochimica et Biophysica Sinica2007，39，1： | 6 |
| 11 | Effects of fluoxetine on protein expression of potassium ion channels in the brain of chronic mild stress rats显示文摘The purpose of this study is to investigate the expression of major potassium channel subtypes in the brain of chronical mild stress(CMS) rats and reveal the effects of fluoxetine on the expression of these channels. Rats were exposed to a variety of unpredictable stress for three weeks and induced anhedonia, lower sucrose preference, locomotor activity and lower body weight. The protein expressions were determined by Western blot. CMS significantly increased the expression of Kv2.1 channel in frontal cortex but not in hippocampus, and the expression level was normalized after fluoxetine treatment. The expression of TREK-1 channel was also obviously increased in frontal cortex in CMS rats. Fluoxetine treatment might prevent this increase. However, the expression of Kv3.1 and Kv4.2 channels was considerably decreased in hippocampus after CMS, and was not affected by fluoxetine. These results suggest that different subtypes of potassium channels are associated with the pathophysiology of depression and that the therapeutical effects of fluoxetine may relate to Kv2.1 and TREK-1 potassium channels. | Chunlin Chen Ling Wang Xianfang Rong Weiping Wang Xiaoliang Wang | 2015 | Acta Pharmaceutica Sinica B2015，5，1： | 6 |
| 12 | The PL 'violet shift' of cerium dioxide on silicon显示文摘CeO2 thin film was fabricated by dual ion beam epitaxial technique. The phenomenon of PL violet shift at room temperature was observed, and the distance of shift was about 65 nm. After the analysis of crystal structure and valence in the compound were carried out by XRD and XPS technique, it was concluded that the PL shift was related with valence of cerium ion in the oxides. When the valence of cerium ion varied from tetravalence to trivalence, the PL peak position would move from blue region to violet region and the phenomenon of 'violet shift' was observed. | Chai Chunlin Yang Shaoyan Liu Zhikai Liao Meiyong Chen Nuofu Wang Zhanguo | 2001 | Chinese Science Bulletin2001，46，24： | 5 |
| 13 | Solenites (Czekanowskiales) from the Late Mesozoic Jehol Biota of Southeastern Jilin,China and its Paleoclimatic Implications显示文摘Situated at the easternmost area of the Late Mesozoic Jehol Biota, China, abundant fossils, including invertebrates, vertebrates and plants, were collected from the Early Cretaceous Yingzuilazi Formation of the Baishan Basin, southeastern Jilin. The faunal remains from this formation distinctly belong to the Early Cretaceous Lycoptera–Ephemeropsis–Eosestheria assemblage of the Jehol Biota. Based on the gross leaf morphology and epidermal structures, two new species and one indeterminate species of genus Solenites(Czekanowskiales), S. baishanensis sp. nov., S. gracilis sp. nov. and S. sp. are described in this paper. This is the first fossil plant of Czekanowskiales reported from this new fossil locality of the easternmost area of the Late Mesozoic Jehol Biota, China. The new discovery contributes to improve our knowledge for understanding of leaf morphology, epidermal characters and diversity of this genus during the Early Cretaceous time, and extends geologic and geographic distribution of Solenites in northern China and Eurasia. Along with consideration of associated plant and faunal assemblages and sedimentology, we suggest that the regional climate was warm and moderately humid with seasonal temperature and precipitation variations in warm–temperate zone during the Early Cretaceous. | LI Yunfeng SUN Chunlin LI Tao NA Yuling CHEN Yuejun XING Dehe | 2015 | Acta Geologica Sinica(English Edition)2015，89，4： | 5 |
| 14 | A new species of the genus Crocidura from China based on molecular and morphological data(Eulipotyphla: Soricidae)显示文摘A new species of white-toothed shrew,Crocidura anhuiensis Zhang,Zhang&Li,sp.nov.is described from Mount Huang,China.Genetic sequence(mt DNA Cyt b gene)and morphological(external and skull)data are used to distinguish this newly discovered species.The phylogenetic analysis shows that the materials of this work are monophyletic and allied to C.attenuata by the uncorrected genetic distance 4.9–5.1%,which suggests a species-level divergence.Morphologically,the materials are different from C.attenuata by presenting a greater proportion of tail-to-body ratio and the presence of an obvious tooth root in the mandible.Based on those data,the unnamed species is described as a new species which is currently known only from the Wild Monkey Valley,Mount Huang,Anhui Province,China. | Heng Zhang Guiyou Wu Yanqing Wu Jianfei Yao Shuo You Chencheng Wang Feng Cheng Jingjing Chen Mingxia Tang Chunlin Li Baowei Zhang | 2019 | Zoological Systematics2019，44，4： | 5 |
| 15 | N-doped graphene and TiO_2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO_x with NH_3显示文摘A series of N-doped graphene(NG)and TiO_2 supported MnO_x–CeO_2 catalysts were prepared prepared by a hydrothermal method.The catalysts with different molar ratios of Mn/Ce(6:1,10:1,15:1)were investigated for the low-temperature selective catalytic reduction(SCR)of NO_x with NH_3.The synthesized catalysts were characterized by HRTEM,SEM,XRD,BET,XPS,and NH_3-TPD technologies.The characterization results indicated that manganese and cerium oxide particles dispersed on the surface of the TiO_2–NG support uniformly,and that manganese and cerium oxides existed in different valences on the surface of the TiO_2–NG support.At Mn element loading of 8 wt%,MnO_x–CeO_2(10:1)/TiO_2–1%NG displayed superior activity and improved SO_(2 )resistance.On the basis of the catalyst characterization,excellent catalytic performance and SO_2 tolerance at low temperature were attributed to the high content of manganese with high oxidation valence,extensive oxidation of NO into NO_2 by CeO_2 and strong NO adsorption capacity,and electron transfer of N-doped graphene. | Chunlin ZHAO Yanxia WU Hailong LIANG Xi CHEN Jie TANG Xianzhong WANG | 2018 | Journal of Advanced Ceramics2018，7，3： | 5 |
| 16 | Violet/blue photoluminescence from CeO_2 thin film显示文摘CeO2 thin film was fabricated by dual ion beam epitaxial technique. The violet/blue PL at room temperature and lower temperature was observed from the CeO2 thinfilm. After the analysis of crystal structure and valence in the compound was carried out by the XRD and XPS technique, it was inferred that the origin of CeO2 PL was due to theelectrons transition from Ce4f band to O2p band and thedefect level to O2p band. And these defects levels were lo-cated in the range of 1 eV around Ce4f band. | CHAI Chunlin, YANG Shaoyan, LIU Zhikai, LIAO Meiyong & CHEN Nuofu Key Laboratory of Semiconductor Material Science, Institute of Semi-conductors, Chinese Academy of Sciences, Beijing 100083, China | 2003 | Chinese Science Bulletin2003，48，12： | 4 |
| 17 | Methodology of drug screening and target identification for new necroptosis inhibitors显示文摘Apoptosis has been considered as the only form of regulated cell death for a long time. However, a novel form of programmed cell death called necroptosis was recently reported. The process of necroptosis is regulated and plays a critical role in the occurrence and development of multiple human diseases. Thus,the study on the molecular mechanism of necroptosis and its effective inhibitors has been an attractive field for researchers. Herein, we introduce the molecular mechanism of necroptosis and focus on the literature about necroptosis drug screening in recent years. In addition, the identification of the critical drug targets of the necroptosis is also discussed. | Pengchao Pan Zhenyu Cai Chunlin Zhuang Xiaofei Chen Yifeng Chai | 2019 | Journal of Pharmaceutical Analysis2019，9，2： | 3 |
| 18 | Characterizing the induction of diabetes in juvenile cynomolgus monkeys with different doses of streptozotocin显示文摘Juvenile(2-3 years old) cynomolgus monkeys are frequently used as recipients in non-human primate islet transplantation studies.The aim of this study was to examine the effects of different doses of streptozotocin(STZ),and find the optimal dose for inducing diabetes in these monkeys.Fifteen juvenile(2-3 years old) cynomolgus monkeys were separated into three groups and administered with different doses of STZ(100,68 or 60 mg kg-1).Basal and glucose-stimulated blood glucose,insulin,and C-peptide levels,as well as body weights were monitored.Hepatic and renal function tests and pancreatic immunohistochemistry were performed before and after STZ treatment.Monkeys treated with both 100 and 68 mg kg-1 of STZ exhibited continuous hyperglycemia,which coincided with a nearly complete loss of islet--cells.Two monkeys received 60 mg kg-1 of STZ,but only one became completely diabetic.During the first week following STZ treatment,hepatic and renal function slightly increased in these three groups.However,24 hours post-STZ,serum total bile acid levels were significantly increased in monkeys treated with 100 mg kg-1 than those treated with 68 mg kg-1 of STZ(P<0.05).These data suggest that 100 mg kg-1 and 68 mg kg-1 of STZ can safely induce diabetes in cynomolgus monkeys aged 2-3 years,but 68 mg kg-1 of STZ,rather than 100 mg kg-1 of STZ,may be more appropriate for inducing diabetes in these monkeys.Furthermore,body surface area,rather than body weight,was a more reliable determinant of dosage,where 700 mg m-2 of STZ should be the lower limit for inducing diabetes in juvenile monkeys. | ZOU ChunLin WANG JiaYin WANG ShuYan HUANG Fen REN ZhenHua CHEN ZhiGuo ZHANG YU | 2012 | Science China(Life Sciences)2012，55，3： | 3 |
| 19 | Effects of magnesium on the performance of sows and their piglets显示文摘The objective of this study was to evaluate the effects of supplemental magnesium(Mg) on the performance of gilts and parity 3 sows and their piglets.Fifty-six gilts(Trial 1) and 56 sows(Trial 2) were assigned to one of 4treatments according to their mating weight,respectively.The treatments comprised corn-soybean meal based gestation and lactation diets(0.21%magnesium) supplemented with 0,0.015,0.03,or 0.045%Mg from mating until weaning.The results showed that magnesium supplementation significantly(P < 0.05) reduced the weaning to estrus interval in both gilts and sows.There were significant effects(P < 0.05) of supplemental magnesium on the total number of piglets born,born alive and weaned in sows.In late gestation and lactation,the digestibility of crude fiber(quadratic effects,P< 0.05),and crude protein(P< 0.05),were significantly influenced by magnesium in gilts and sows,respectively.There were differences among the 4 groups in terms of the apparent digestibility of dry matter and crude fiber in sows(P< 0.05) during both early and late gestation.The apparent digestibility of gross energy was increased for sows in late gestation(P< 0.05),and lactation(quadratic effects,P< 0.05).At farrowing and weaning,serum prolactin levels and alkaline phosphate activities linearly increased in sows as the Mg supplementation increased(P < 0.05).Serum Mg of sows at farrowing and serum urea nitrogen of sows at weaning was significantly influenced by Mg supplementation(P< 0.05).The Mg concentration in sow colostrum and the serum of their piglets were increased by supplemental magnesium(P < 0.05).In addition,growth hormone levels were linearly elevated(P< 0.05) in the serum of piglets suckling sows.Our data demonstrated that supplemental magnesium has the potential to improve the reproduction performance of sows,and the suitable supplemental dose ranged from 0.015%to 0.03%. | Jianjun Zang Jingshu Chen Ji Tian Aina Wang Hong Liu Shengdi Hu Xiangrong Che Yongxi Ma Junjun Wang Chunlin Wang Guanghua Du Xi Ma | 2015 | Journal of Animal Science and Biotechnology2015，6，1： | 3 |
| 20 | Environmental exposure and flux of thallium by industrial activities utilizing thallium-bearing pyrite显示文摘Thallium(Tl) is a typical toxic heavy metal,with higher toxicity to mammals than Hg,Cd,and Pb.Accurate assessments of its environmental exposure and flux are central to effective management and control of Tl pollution.This paper first presents in detail the environmental exposure and flux of Tl by typical industrial activities utilizing Tl-bearing pyrite minerals to produce sulfuric acid.For this purpose,sequential extraction and Inductively Coupled Plasma Mass Spectrometry(ICP-MS) were used to investigate total content and geo-chemical partitioning of Tl in raw pyrite ores and solid roasting wastes,thereby uncovering Tl distribution and transformation during the production process.Results showed that some portions of Tl bearing in the minerals went into vapor,which transferred Tl into different processes;and some portions of Tl went into water during the gas washing procedure,leaving some other portions remained in the solid slags.More importantly,detailed investigation revealed that 40% of Tl in the pyrite minerals was active,among which 25% of Tl originally in the pyrite minerals was washed into water during gas cleaning process and 15% of active Tl retained in the slags.The latter portion of active Tl could be possibly transferred to the soil or water with the slag deposal or being reused;and 60% of Tl remained relatively stable in the residual phase. | CHEN YongHeng WANG ChunLin LIU Juan WANG Jin QI JianYing WU YingJuan | 2013 | Science China Earth Sciences2013，56，9： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员