|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of thymol and carvacrol supplementation on intestinal integrity and immune responses of broiler chickens challenged with Clostridium perfringens显示文摘Background: Necrotic enteritis caused by Clostridium perfringens infection leads to serious economic losses in the global poultry production. In the present study, we investigated the protective effects of essential oils(EO, which contained 25 % thymol and 25 % carvacrol as active components) supplementation on growth performance, gut lesions, intestinal morphology, and immune responses of the broiler chickens infected with C. perfringens. A total of448 1-day-old male broiler chicks were allocated into eight treatment groups following a 4 × 2 factorial arrangement with four dietary EO dosages(0, 60, 120, or 240 mg/kg) and two infection status(with or without C. perfringens challenge from d 14 to 20).Results: The challenge did not impair the growth performance of birds, but induced gut lesions and increased crypt depth in the ileum(P ≤ 0.05). It also down-regulated the claudin-1 and occludin m RNA expression(P ≤ 0.05),up-regulated the m RNA expression of interleukin-1β(P ≤ 0.05), tended to increase the toll-like receptor(TLR)2 m RNA expression(P < 0.10) in the ileum, and enhanced the mucosal secretory Ig A production(P ≤ 0.05). In the challenged birds, dietary EO supplementation linearly alleviated the gut lesions and improved the ratio of vil us height to crypt depth(P ≤ 0.05), and the supplementation of 120 and 240 mg/kg EO increased the serum antibody titers against Newcastle disease virus(P ≤ 0.05). Regardless of challenge, the EO supplementation showed a tendency to linearly elevate the feed conversion efficiency between 14 and 28 d of age as well as the occludin m RNA expression(P < 0.10), and linearly inhibited the m RNA expression of TLR2 and tumor necrotic factor-α in the ileum(P ≤ 0.05).Conclusions: The dietary supplementation of EO could alleviate the intestinal injury by improving intestinal integrity and modulating immune responses in the C. perfringens-challenged broiler chickens. | Encun Du Weiwei Wang Liping Gan Zhui Li Shuangshuang Guo Yuming Guo | 2016 | Journal of Animal Science and Biotechnology2016，7，4： | 43 |
| 2 | Petrogenesis of Late Cretaceous Jiangla'angzong I-Type Granite in Central Lhasa Terrane, Tibet, China: Constraints from Whole-Rock Geochemistry, Zircon U-Pb Geochronology, and Sr-Nd-Pb-Hf Isotopes显示文摘The Jiangla'angzong granite in the northern part of the Central Lhasa Terrane is composed of syenogranite and adamellite. LA-ICP-MS zircon U-Pb analyses suggest that syenogranite has a weighted mean ^(206) Pb/^(238) U age of 86±1 Ma(mean square weighted deviation=0.37), which is in accordance with the muscovite Ar-Ar age(85±1 Ma) of Cu-Au ore-bearing skarns and the zircon U-Pb age(84±1 Ma) of adamellite. This suggests that the Jiangla'angzong magmatism and Cu–Au mineralization events took place during the Late Cretaceous. The granite contains hornblende, biotite, and pyroxene, and does not contain Al-bearing minerals, such as muscovite, cordierite, and garnet. It has high contents of SiO_2(65.10–70.91 wt%), K_2O(3.44–5.17 wt%), and total K_2O+Na_2O(7.13–8.15 wt%), and moderate contents of A_(12)O_3(14.14–16.45 wt%) and CaO(2.33–4.11 wt%), with a Reitman index(σ43) of 2.18 to 2.33, and A/CNK values of 0.88 to 1.02. The P_2O_5 contents show a negative correlation with SiO_2, whereas Pb contents show a positive correlation with SiO_2. Th and Y contents are relatively low and show a negative correlation with the Rb contents. These characteristics suggest that the Jiangla'angzong granite is a high K calc–alkaline metaluminous I–type granite. It is enriched in light rare earth elements(LREE) and large ion lithofile elements(LILE), and depleted in heavy rare earth elements(HREE) and high field strength elements(HFSE), with LREE/HREE ratios of 11.7 to 18.1. The granite has negative Eu anomalies of 0.58 to 0.94 without obvious Ce anomalies(δCe=1.00–1.04). The relatively low initial 87 Sr/86 Sr ratios of 0.7106 to 0.7179, positive εHf(t) values of 1.0 to 4.1, and two-stage Hf model ages(TDM2) ranging from 889 Ma to 1082 Ma, These geochemical features indicate that the granite derived from a juvenile crust. The(^(143) Nd/^(144) Nd)_t values from the Jiangla'angzong granite range from 0.5121 to 0.5123, its εNd(t) values range from-10.17 to-6.10, its(^(206) Pb/^(204) Pb)_t values range from 18.683 to 18.746, its(^(207) Pb/^(204) Pb)_t values range from 15.695 to 15.700, and its(^(208) Pb/^(204) Pb)_t values range from 39.012 to 39.071. These data indicate that the granite was formed by melting of the upper crust with the addition of some mantle materials. We propose that the Jiangla'angzong granite was formed during the postcollision extension of the Qiangtang and Lhasa terranes. | LIU Hong LI Guangming HUANG Hanxiao CAO Huawen YUAN Qian LI Yingxu OUYANG Yuan LAN Shuangshuang LU Menghong YAN Guoqiang | 2018 | Acta Geologica Sinica(English Edition)2018，92，4： | 20 |
| 3 | Primary dolostone formation related to mantle-originated exhalative hydrothermal activities,Permian Yuejingou section,Santanghu area, Xinjiang,NW China显示文摘The Permian Lucaogou Formation is an important hydrocarbon source rock in the Junggar, Turpan, and Santanghu basins in Xinjiang, NW China. For the first time, dolostones associated with mantle-originated exhalative hydrothermal fluid flows are discovered in Yuejingou section in the Santanghu Basin area. They include dolomicrite, doloarenite, and a small amount of dolorudite, and are finely (0.05-0.15 cm thick) interlaminated with lime micrite and dolomicritic analcime laminites. Alkali feldspar and analcime grains are common in doloarenite and are interpreted as having been derived from analcime phonolites and peralkaline magmatic rocks. These magmatic fragments were brought up from subsurface by hydrothermal fluid flow and had experienced exhalative brecciation, transport, and deposition on the lake floor. The matrix consists dominantly of dolomite and ankerite smaller than 0.01 mm. The dolostones can be subdivided into four types on the basis of mineral composition and content. The detrital analcime and alkaline feldspar grains and tuff lithics are interpreted as intraclasts, which were deposited in an under-filled starved lake basin. The δ18OPDB values of dolostones are -5‰ to -21.1‰, and -11.9‰ on average; the 87Sr/86Sr ratios of dolostones are 0.70457 to 0.706194, and 0.705005 on average. These values, in combination with evidence of multi-episodes of peralkaline extrusion, suggest a mantle origin of the hydrothermal fluids, which may have promoted primary dolomite formation. The fluid from the upper mantle caused serpentinization of ultramafic rocks that intruded into the lower crust to obtain Mg2+ and Fe2+, and injected the ions into the lake water as the Mg and Fe sources for dolomite and ankerite. Hydro- thermal fluids associated with peralkaline magmatic rocks also provided Ca2+, Mg2+, Fe2+, and CO32-. Explosive breccias formed and dolostones were convoluted near the vent of hydrothermal fluid exhalation, whereas laminated dolostones formed farther away from the vent. The dolostones are primary dolomite deposition in an intracontinental rift basin and associated with mantle-originated hydrothermal fluids. They provide an insight into the origin of dolomite formation in the geologic history and clues to understand the sedimentary environments and tectonic conditions in northern Xinjiang during the late Paleozoic. | LIU YiQun JIAO Xin LI Hong YUAN MingSheng YANG Wan ZHOU XiaoHu LIANG Hao ZHOU DingWu ZHENG ChaoYang SUN Qin WANG ShuangShuang | 2012 | Science China Earth Sciences2012，55，2： | 17 |
| 4 | Response of vegetation restoration to climate change and human activities in Shaanxi-Gansu- Ningxia Region显示文摘为自从 1999,政府开始的格林工程的谷物是到在 agro 牧剧的植被恢复的主导的贡献者北中国的过渡地区。气候变化和人的活动为改进和降级负责到某个度。以便监视植被变化并且在 Shaanxi-Gansu-Ningxia 区域澄清康复的原因,这份报纸,基于 MODIS-NDVI 和气候数据在 20002009 的时期期间,分析植被恢复的主要特征,空间时间的分发和原因用线性回归的方法,林中小丘代表,标准差和另外的方法。结果如下被显示出。(1 ) 从 2000 ~ 2009,学习区域的 NDVI 日益增多地被改进,与一个线性趋势是 0.032/10a,比从 1982 ~ 2006 的三北方的躲蔽处福雷斯特节目(0.007/10a ) 的生长快。(2 ) 植被恢复被二个快成长的时期描绘,与一条塑造 S 的增加曲线。(3 ) 对植被恢复的贡献的最大的比例在稍微改进的区域被观察,列在后面由中等并且显著地改进的区域;降级的区域象 Gansu 省的 Shaanxi 省, Huanxian 和 Zhengyuan 的东方 Dingbian 一样在 Ningxia Hui 自治区域的南部的部分上偶发地被散布。(4 ) 气候变化和人的活动是在植被恢复的二个驱动力;而且象为格林工程的谷物那样的人为的因素是在本地规模上导致 NDVI 的一个增加的趋势的主要原因。然而,它的影响机制尚待进一步被调查。(5 ) NDVI 时间系列的林中小丘代表证明植被恢复是持续的。在植被盖子的改进将膨胀到这个区域的大多数部分,这被期望。 | LI Shuangshuang YAN dunping LIU Xinyan WAN Jia | 2013 | Journal of Geographical Sciences2013，23，1： | 14 |
| 5 | Progress of applied research on TiO_2 photocatalysis-membrane separation coupling technology in water and wastewater treatments显示文摘Photocatalysis-membrane separation coupling technology has been a heavily researched area in water and wastewater treatment during recent years. The membrane separation process allows the photocatalyst to be easily separated, recovered and reused. More significantly, the membrane is efficient to maintain high flux of membranes as the photocatalyst can reduce the membrane fouling problem which is a hindrance in the development of membrane process. Moreover, some synergistic effects can also be produced, and thus the efficiency of water treatment is enhanced greatly. A comprehensive review of photocatalysis-membrane separation coupling technology is conducted with an insight into its configurations, theories involved, characteristics, and factors that influ-ence the coupling technology. In view of the existing problems, the prospects for future development are also proposed. | XIAO YuTang XU ShuangShuang LI ZhiHua AN XiaoHong ZHOU Lei ZHANG YongLai FU Q. Shiang | 2010 | Chinese Science Bulletin2010，55，14： | 13 |
| 6 | Distribution, geochemistry and age of the Millennium eruptives of Changbaishan volcano, Northeast China - A review显示文摘大爆炸暴烈的爆发产生为识别火山的来源提供有利条件的广泛的地区性的 tephra 存款,比较一个区域的沉积阶层并且决定他们的年龄。tephra 层,叫作 B-Tm,由 Changbaishan 火山的千年爆发产生了,广泛地在东北中国,日本, D.P.R 朝鲜,和俄国的附近沿海的区域被散布。它形成普遍东北亚洲人阶层的部分并且为建立一个等时的 stratigraphic 框架是重要的。然而,用这 tephra 层在时间的描述和联系阶层的 stratigraphic 关联上研究主要被集中在并且在日本附近。在东北中国,这 tephra 层很少被看见,它在 stratigraphic 关联的申请甚至更稀罕。更重要地,为远侧、近似的 tephras 的精确年龄的决心被辩论了,导致在它的环境影响的讨论的争吵。从这爆发通常发生在 1,012 和 1,004 cal 年 BP 之间的远侧、近似的 Changbaishan 灰表演的 Stratigraphic 记录。在在日本附近的 Changbaishan 灰和第四级的普遍的灰之间的 Geochemical 比较说明 Changbaishan 灰是从 rhyolitic 的一篇连续作文到 trachytic 和它到 CaO 的 FeO ^潜水艇 T ^的比率,这通常比 4 大,它能在全球当代的爆发之中被用作一个区分的标识符[出版摘要] | Chunqing SUN Haitao YOU Jiaqi LIU Xin LI Jinliang GAO Shuangshuang CHEN | 2014 | Frontiers of Earth Science2014，8，2： | 10 |
| 7 | SSR Analysis of Genetic Diversity Among 192 Diploid Potato Cultivars显示文摘In potato breeding,it is difficult to improve the traits of interest at the tetraploid level due to the tetrasomic inheritance.A promising alternative is diploid breeding.Thus it is necessary to assess the genetic diversity of diploid potato germplasm for efficient exploration and deployment of desirable traits.In this study,we used SSR markers to evaluate the genetic diversity of diploid potato cultivars.To screen polymorphic SSR markers,55 pairs of SSR primers were employed to amplify 39 cultivars with relatively distant genetic relationships.Among them,12 SSR markers with high polymorphism located at 12 chromosomes were chosen to evaluate the genetic diversity of 192 diploid potato cultivars.The primers produced 6 to 18 bands with an average of 8.2 bands per primer.In total,98 bands were amplified from 192 cultivars,and 97 of them were polymorphic.Cluster analysis using UPGMA showed the genetic relationships of all accessions tested:186 of the 192 accessions could be distinguished by only 12 pairs of SSR primers,and the 192 diploid cultivars were divided into 11 groups,and 83.3% constituted the first group.Clustering results showed relatively low genetic diversity among 192 diploid cultivars,with closer relationship at the molecular level.The results can provide molecular basis for diploid potato breeding. | SONG Xiaoyan ZHANG Chunzhi LI Ying FENG Shuangshuang YANG Qing HUANG Sanwen | 2016 | Horticultural Plant Journal2016，2，3： | 9 |
| 8 | Joint utilization of genetic analysis and semi-cloning technology reveals a digenic etiology of Müllerian anomalies显示文摘Dear Editor,Identifying pathogenic gene mutations and their combination is critical but challenging in dissecting the etiology of complex diseases when more than one gene is involved.1 The digenic/oligogenic/omnigenic models,holding that more than one gene could act synergistically,appeal to a wide range of genes responsible for complex phenotypes.1,2,3,4 These genetic models advanced our understanding of genetic factors underlying complex phenotypes,yet an accordingly rapid and efficient experimental assay for identifying pathogenic combinations of genetic variants at animal model level is lacking and urgently needed. | Lingbo Wang Ying Zhang Xiaoyi Fu Shuangshuang Dong Shuyan Tang Ning Zhang Chengcheng Song Nan Yang Lin Zhang Hongyan Wang Huijuan Shi Li Jin Feng Zhang Jinsong Li Keqin Hua | 2020 | Cell Research2020，30，1： | 8 |
| 9 | In vitro differentiation of human adipose-derived mesenchymal stem cells into endothelial-like cells显示文摘The neovascularization of ischemic tis- sue is a crucial initial step for the functional rehabili- tation and wound healing. However, the short of seed cell candidate for the foundation of vascular network is still a big issue. Human adipose tissue derived mesenchymal stem cells (hADSCs), which possess multilineage potential, are capable of adipogenic, osteogenic, and chondrogenic differentiation. We examined whether this kind of stem cells could dif- ferentiate into endothelial-like cells and participate in blood vessel formation, and whether they could be used as an ideal cell source for therapeutic angio- genesis in ischemic diseases or vascularization of tissue constructs. The results showed that hADSCs, grown under appropriately induced conditions, dis- played characteristics similar to those of vessel en- dothelium. The differentiated cells expressed endo- thelial cell markers CD34 and vWF, and had high metabolism of acetylated low-density lipoprotein and prostacyclin. In addition, the induced cells were able to form tube-like structures when cultured on matrigel. Our data indicated that induced hADSCs could ex- hibit characteristics of endothelial cells. Therefore, these cells, as a source of human endothelial cells, may find many applications in such realms as engi- neering blood vessels, endothelial cell transplantation for myocardial regeneration, and induction of angio- genesis for treatment of regional ischemia. | GUAN Lidong LI Shaoqing WANG Yunfang YUE Huimin LIU Daqing HE Lijuan BAI Cixian YAN Fang NAN Xue SHI Shuangshuang PEI Xuetao | 2006 | Chinese Science Bulletin2006，51，15： | 6 |
| 10 | Construction and initial analysis of five Fosmid libraries of mitochondrial genomes of cotton(Gossypium)显示文摘Cotton(Gossypium)is an important crop providing textile fiber and edible oil.To gain the insights into mechanism of the cytoplasmic male sterility(CMS)inheritance,we constructed five fosmid libraries of mitochondrial genomes from mitotype of G.harknessii Brandegee.(one CMS line and its restorer),mitotype of G.hirsutum L.(one CMS line and its maintainer),and G.barbadense L.The numbers of the clones in these libraries ranged from 1152 to 2016 with an average insert size of 36.2 to 38.4 kb,equivalent to 70–119.3 mitogenomes.The libraries were screened with 28 markers derived from the conservative sequences and yielded 22,19,26,21,and 23 positive clones,respectively.These positive clones were used to construct the physical map of G.harknessii Brandegee.CMS line and G.barbadense L.mitogenomes that shared six syntenis regions.A total of 30 genes in nine clusters showed conservative and had high similarity with those in the mitochondrial genomes of cotton,Carica papaya,Cucurbita pepo and Nicotiana tabacum.Further investigation indicated that gene rrn26 had two copies in all five cotton mitogenomes,while genes atp1,rrn5 and rrn18 had two copies only in G.barbadense L.The positive clones and physical map are considered being useful resources in cotton genomics research. | LI ShuangShuang LIU GuoZheng CHEN ZhiWen WANG YuMei LI PengBo HUA JinPing | 2013 | Chinese Science Bulletin2013，58，36： | 5 |
| 11 | Parthenolide inhibits LPS-induced inflammatory cytokines through the toll-like receptor 4 signal pathway in THP-1 cells显示文摘Parthenolide (PTL ) 显示出反煽动性的有势力和反癌症活动。在现在的学习, PTL 的活动的分子的机制在导致的 lipopolysaccharide (LPS ) 被探索人的白血病 monocytic THP-1 房间和人的主要单核白血球。3-(4,5-dimethylthiazol-2-yl )-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium 盐(山) 试金被用来在 THP-1 房间生存能力上分析 PTL 的效果。连接酶的 immunosorbent 试金被用来在导致 LPS 的煽动性的 cytokine 分泌物上决定 PTL 的效果。流动 cytometry 和量的即时聚合酶链反应被用来在导致 LPS 的像使用费的受体上估计 PTL 的效果 4 (TLR4 ) 表示。表明分子的 Phosphorylation 层次被西方的污点分析决定。结果显示出那 PTL < 12.5 M 显著地没影响 THP-1 房间生存能力。LPS 治疗导致了 interleukin (IL ) 的一条显著起来规定 -6, IL-1, IL-8, IL-12p40,肿瘤坏死因素 -- , IL-18,并且没有在里面 THP-1 房间。然而, PTL 以一种剂量依赖者方式禁止了这些 cytokines 的表示,与 1.0912.620 M 的 IC 50 价值。PTL 与由流动 cytometry 分析决定了的 1.373 M 的 IC 50 值堵住了 TLR4 表示,并且这堵住的效果在蛋白质和 mRNA 层次被验证。另外的分子的表情的细胞外的调整信号的 kinase 1/2 ,6月N终端 kinase , p38 ,原子因素 B ( NF-B ) p65 ,和 IB 和起来规定的 phosphorylation 层次的起来规定(可诱导的氮的氧化物 synthase , TLR4 ,并且 TNF 联系受体的因素 6 )由 LPS 导致了被 PTL 以一种剂量依赖者方式废除。PTL 的反煽动性的机制通过表明小径的调停 TLR4 的激活 mitogen 的蛋白质 kinase 和 NF-B 部分操作。因此, TLR4 可以是为反发炎治疗的一个新目标。 | Shuangshuang Li Xiangli Gao Xiaoxin Wu Zhigang Wu Linfang Cheng Lifen Zhu Dan Shen Xiangmin Tong | 2015 | Acta Biochimica et Biophysica Sinica2015，47，5： | 5 |
| 12 | High‑Energy and High‑Power Pseudocapacitor–Battery Hybrid Sodium‑Ion Capacitor with Na^(+) Intercalation Pseudocapacitance Anode显示文摘High-performance and low-cost sodium-ion capacitors(SICs)show tremendous potential applications in public transport and grid energy storage.However,conventional SICs are limited by the low specific capacity,poor rate capability,and low initial coulombic efficiency(ICE)of anode materials.Herein,we report layered iron vanadate(Fe5V15O39(OH)9·9H2O)ultrathin nanosheets with a thickness of~2.2 nm(FeVO UNSs)as a novel anode for rapid and reversible sodium-ion storage.According to in situ synchrotron X-ray diffractions and electrochemical analysis,the storage mechanism of FeVO UNSs anode is Na+intercalation pseudocapacitance under a safe potential window.The FeVO UNSs anode delivers high ICE(93.86%),high reversible capacity(292 mAh g^−1),excellent cycling stability,and remarkable rate capability.Furthermore,a pseudocapacitor–battery hybrid SIC(PBH-SIC)consisting of pseudocapacitor-type FeVO UNSs anode and battery-type Na3(VO)2(PO4)2F cathode is assembled with the elimination of presodiation treatments.The PBH-SIC involves faradaic reaction on both cathode and anode materials,delivering a high energy density of 126 Wh kg^−1 at 91 W kg^−1,a high power density of 7.6 kW kg^−1 with an energy density of 43 Wh kg−1,and 9000 stable cycles.The tunable vanadate materials with high-performance Na+intercalation pseudocapacitance provide a direction for developing next-generation highenergy capacitors. | Qiulong Wei Qidong Li Yalong Jiang Yunlong Zhao Shuangshuang Tan Jun Dong Liqiang Mai Dong‑Liang Peng | 2021 | Nano-Micro Letters2021，13，3： | 4 |
| 13 | Hierarchical graphene@MXene composite foam modified with flower-shaped FeS for efficient and broadband electromagnetic absorption显示文摘Developing high-performance broadband microwave absorption material becomes an urgent concern in the field of electromagnetic protection.In this work,an ultralight magnetic composite foam was con-structed by electrostatic self-assembly of MXene on the surface of graphene skeletons,and subsequent hydrothermal anchoring of flower-shaped FeS clusters.Under the synergistic effect of MXene coating in-creasing conductive loss and FeS clusters improving magnetic loss,the rational construction of hierarchi-cal impedance structure in foam can effectively promote the entrance and consumption of more incident electromagnetic waves.The minimum reflection loss(RL min)reaches-47.17 dB at a thickness of 4.78 mm,and the corresponding effective absorption bandwidth(EAB)is up to 6.15 GHz.More importantly,the microwave absorption performance of composite foam can be further optimized by controlling the load-ing of MXene and thermal treatment at a low temperature.The maximum of EAB for GMF-300 can be extended to an unprecedented value of 11.20 GHz(covering 6.10-17.30 GHz). | Shuangshuang Li Xinwei Tang Xu Zhao Shijie Lu Jiangtao Luo Zheyuan Chai Tiantian Ma Qianqian Lan Piming Ma Weifu Dong Zicheng Wang Tianxi Liu | 2023 | Journal of Materials Science & Technology2023，，2： | 4 |
| 14 | A Preliminary Study of the Noninvasive Remote Control System for Rat Bio-Robot显示文摘A system is described here that can noninvasively control the navigation of freely behaving rat via ultrasonic,epidermaland LED photic stimulators on the back.The system receives commands from a remote host computer to deliver specifiedelectrical stimulations to the hearing,pain and visual senses of the rat respectively.The results demonstrate that the three stimuliwork in groups for the rat navigation.We can control the rat to proceed and make right and left turns with great efficiency.Thisexperiment verified that the rat was able to reach a setting destination in the way of cable with the help of a person through theappropriate coordination of the three stimulators.The telemetry video camera mounted on the head of the rat also achieveddistant image acquisition and helped to adjust its navigation path over a distance of 300 m.In a word,the non-invasive motioncontrol navigation system is a good,stable and reliable bio-robot. | Xitian Pi~(1,2),Shuangshuang Li~1,Lin Xu~1,Hongying Liu~1,Shenshan Zhou~1,Kang Wei~1,Zhenyu Wang~1,Ziru Jia,Xiaolin Zheng~(1,2),Zhiyu Wen~2 1.Bioengineering College,Chongqing University,Chongqing 400030,P.R.China 2.Key Laboratories for National Defense Science and Technology of Innovative Micro-Nano Devices and System Technology,Chongqing University,Chongqing 400030,P.R.China | 2010 | Journal of Bionic Engineering2010，7，4： | 4 |
| 15 | Nitrogen-cycling microbial community functional potential and enzyme activities in cultured biofilms with response to inorganic nitrogen availability显示文摘Biofilms mediate crucial biochemical processes in aquatic ecosystems. It was hypothesized that eutrophication may promote the growth of biofilms, resulting in larger numbers of functional genes. However, the metabolic activity and the roles of biofilms in N cycling will be affected by ambient inorganic nitrogen availability, not by the abundance of functional genes. Biofilms were cultured either with replete inorganic nitrogen(N-rep) or without exogenous inorganic nitrogen supply(N-def) in a flow incubator, and the N-cycling gene abundances(nifH, N_2 fixation; amoA, ammonia oxidation, archaea and bacteria; nirS and nirK, denitrification) and enzyme activities(nitrogenase and nitrate reductase) were analyzed. The results showed that, comparing the N-def and N-rep biofilms, the former contained lower nifH gene abundance, but higher nitrogenase activity(NA), while the latter contained higher nifH gene abundance, but lower NA. Different patterns of NA diel variations corresponded to the dynamic microbial community composition and different stages of biofilm colonization. Ammonia oxidizing bacteria(AOB), detected only in N-def biofilms, were responsible for nitrification in biofilms. N-rep biofilms contained high nirS and nirK gene abundance and high denitrification enzyme activity, but N-def biofilms contained significantly lower denitrification gene abundance and activity. In general,the strong N_2 fixation in N-def biofilms and strong denitrification in N-rep biofilms assured the balance of aquatic ecosystems. The results suggested that evaluation of the functional processes of N cycling should not only focus on genetic potential, but also on the physiological activity of biofilms. | Shuangshuang Li Chengrong Peng Taisheng Cheng Chun Wang Liangliang Guo Dunhai Li | 2019 | Journal of Environmental Sciences2019，31，2： | 4 |
| 16 | Study on the hypolipidemic properties of garlic polysaccharide in vitro and in normal mice as well as its dyslipidemia amelioration in type2 diabetes mice显示文摘In the present work,garlic polysaccharide(GP)in lowering lipid based on in vitro and in vivo approaches were investigated.The in vitro studies revealed significant effects of GP on cholesterol,sodium cholate,oil binding,and lipase inhibition.Meanwhile,the liver index in the medium and high dose GP group was significantly lower than the control group in normal mice which relatively corresponded to the modulated effect of intestinal flora.A high dose of GP has markedly reduced the ratio of intestinal Firmicutes to Bacteroidetes and increased the abundance of gut probiotics Akkermansia.Furthermore,the high dose of GP also significantly reduced the levels of triglyceride and low-density lipoprotein cholesterol of diabetic mice indicating that GP could not only prevent hyperlipidemia of metabolic syndrome but also further ameliorate dyslipidemia of diabetes mellitus.This study provides new prospects for garlic polysaccharide as a hypolipidemic nutraceutical for the treatment of metabolic syndrome and type 2 diabetes. | Chanyuan Xie Wei Gao Xue Li Shuangshuang Luo Fook Yee Chye | 2022 | Food Bioscience2022，47，3： | 3 |
| 17 | From Mind to Products:Towards Social Manufacturing and Service显示文摘After reviewing the development of industrial manufacturing, a novel concept called social manufacturing(SM) and service are proposed as an innovative manufacturing solution for the coming personalized customization era. SM can realize a customer's requirements of 'from mind to products', and fulfill tangible and intangible needs of a prosumer, i.e., producer and consumer at the same time. It represents a manufacturing trend,and is expected to become popular in more and more industries.First, a comparison between mass customization and SM is given out, and the basis and motivation from social network to SM is analyzed. Then, its basic theories and supporting technologies,like Internet of Things(Io T), social networks, cloud computing,3 D printing, and intelligent systems, are introduced and analyzed,and an SM platform prototype is developed. Finally, three transformation modes towards SM and 3 D printing are suggested for different user cases. | Gang Xiong Fei-Yue Wang Timo R. Nyberg Xiuqin Shang Mengchu Zhou Zhen Shen Shuangshuang Li Chao Guo | 2018 | IEEE/CAA Journal of Automatica Sinica2018，5，1： | 3 |
| 18 | Low-strain TiP_(2)O_(7) withthree-dimensionalionchannelsas long-life and high-rate anode material for Mg-ion batteries显示文摘Rechargeable magnesium batteries are identified as a promising next-generation energy storage system,but their development is hindered by the anode−electrolyte−cathode incompatibilities and passivation of magnesium metal anode.To avoid or alleviate these problems,the exploitation of alternative anode materials is a promising choice.Herein,we present titanium pyrophosphate(TiP_(2)O_(7))as anode materials for magnesium-ion batteries(MIBs)and investigate the effect of the crystal phase on its magnesium storage performance.Compared with the me-tastable layered TiP_(2)O_(7),the thermodynamically stable cubic TiP_(2)O_(7) displays a better rate capability of 72 mAh g^(−1) at 5000 mA g^(−1).Moreover,cubic TiP_(2)O_(7) exhibits excellent cycling stability with the capacity of 60 mAh g^(−1) after 5000 cycles at 1000 mA g^(−1),which are better than pre-viously reported Ti-based anode materials for MIBs.In situ X-ray diffraction technology confirms the single-phase magnesiumion inter-calation/deintercalation reaction mechanism of cubic TiP_(2)O_(7) with a low volume change of 3.2%.In addition,the density functional theory calcu-lation results demonstrate that three-dimensional magnesiumion diffu-sion can be allowed in cubic TiP_(2)O_(7) with a low migration energy barrier of 0.62 eV.Our work demonstrates the promise of TiP_(2)O_(7) as high-rate and long-life anode materials for MIBs and may pave the way for further development of MIBs. | Fangyu Xiong Yalong Jiang Li Cheng Ruohan Yu Shuangshuang Tan Chen Tang Chunli Zuo Qinyou An Yunlong Zhao Jean-Jacques Gaumet Liqiang Mai | 2022 | Interdisciplinary Materials2022，1，1： | 3 |
| 19 | Performance of different drought indices for agriculture drought in the North China Plain显示文摘The Palmer drought severity index(PDSI), standardized precipitation index(SPI), and standardized precipitation evapotranspiration index(SPEI) are used worldwide for drought assessment and monitoring. However, substantial differences exist in the performance for agricultural drought among these indices and among regions. Here, we performed statistical assessments to compare the strengths of different drought indices for agricultural drought in the North China Plain. Small differences were detected in the comparative performances of SPI and SPEI that were smaller at the long-term scale than those at the short-term scale. The correlation between SPI/SPEI and PDSI considerably increased from 1-to 12-month lags, and a slight decreasing trend was exhibited during 12-and 24-month lags, indicating a 12-month scale in the PDSI, whereas the SPI was strongly correlated with the SPEI at 1-to 24-month lags. Interestingly, the correlation between the trend of temperature and the mean absolute error and its correlation coefficient both suggested stronger relationships between SPI and the SPEI in areas of rapid climate warming. In addition, the yield–drought correlations tended to be higher for the SPI and SPEI than that for the PDSI at the station scale, whereas small differences were detected between the SPI and SPEI in the performance on agricultural systems. However, large differences in the influence of drought conditions on the yields of winter wheat and summer maize were evident among various indices during the crop-growing season. Our findings suggested that multi-indices in drought monitoring are needed in order to acquire robust conclusions. | LIU Xianfeng ZHU Xiufang PAN Yaozhong BAI Jianjun LI Shuangshuang | 2018 | Journal of Arid Land2018，10，4： | 3 |
| 20 | Ultralight and ordered lamellar polyimide-based graphene foams with efficient broadband electromagnetic absorption显示文摘The development of high-performance microwave absorption materials with strong absorption capacity and broad bandwidth is highly desirable in the field of electromagnetic pollution protection.Herein,ultralight polyimide-based graphene foam with ordered lamellar structure is precisely designed and controllably constructed by bidirectional freezing process.More lamellar interfaces formed inside the foam per unit volume effectively facilitate the layer-by-layer dissipation for the vertical incident electromagnetic waves,thereby endowing the foam with efficient broadband electromagnetic absorption performance.More importantly,electromagnetic absorption performance can be controllably adjusted by optimizing impedance distribution and microstructure of skeletons.As a result,the optimized foam with an ultralow density of 9.10 mg/cm^(3)presents a minimum reflection loss value of-61.29 dB at 9.25 GHz and an effective absorption bandwidth of 5.51 GHz(7.06-12.57 GHz,covering the whole X band) when the thickness is 4.75 mm. | Yawei Zhang Shuangshuang Li Xinwei Tang Wei Fan Qianqian Lan Le Li Piming Ma Weifu Dong Zicheng Wang Tianxi Liu | 2022 | Journal of Materials Science & Technology2022，，7： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员