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Theories and calculation methods for regional objective ET(evapotranspiration):Applications

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Science China(Technological Sciences) 2009年第5期52卷 1390-1396页

作者： lIU JiaHong qin DaYong WANG MingNa lüJinYan SANG XueFeng ZHANG RuiMei China Institute of Water Resources and Hydropower Research Beijing 100044China Research Center on Water Resources and Ecology of the Ministry of Water Resources of China Beijing 100044China

The regional objective ET(evapotranspiration) is defined as the quantity of water that could be con-sumed in a particular *** varies with the water conditions and economic development stages in the *** is also constrained by the requirement of benign environment *** the same time,it must meet the demands of sustainable economic growth and the construction of harmony *** ET based water resources distribution will replace the conventional method,which empha-sizes the balance between the water demand and the water *** puts focus on the reasonable water consumption instead of the forecasted water demand,which is usually greater than the actual *** this paper,we calculated the objective ET of 2010 year level in Tianjin by an analysis-integra-tion-assessment *** ET can be classified into two parts:controllable ET and uncontrol-lable *** ET includes the ET from irrigation land and the ET from resident land,among which the former can be calculated with soil moisture model and evapotranspiration model,while the latter can be calculated by water use ration and water consumption *** uncontrollable ET can be calculated with the distributed hydrological model and the remote sensing monitoring *** two models can be mutually *** this paper,eight schemes are put forward based on different portfolios of water *** objective ET of each scheme was calculated and the results were assessed and ***,an optimal scheme was recommended.

关键词： objective ET(evapotranspiration) water resources management application Tianjin

long term effects of artificial rearing before weaning on the growth performance, ruminal microbiota and fermentation of fattening lambs

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Journal of Integrative Agriculture 2022年第4期21卷 1146-1160页

作者： HUANG Wen-qin CUI Kai HAN Yong CHAI Jian-min WANG Shi-qin lÜXiao-kang DIAO Qi-yu ZHANG Nai-feng Institute of Feed Research Chinese Academy of Agricultural Sciences/Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural AffairsBeijing 100081P.R.China Guizhou Institute of Animal Husbandry and Veterinary Science Guizhou 550005P.R.China Department of Animal Science Division of AgricultureUniversity of ArkansasFayettevilleAR72701USA

Early life intervention is important to shape the gut microbiome profiles of adult animals due to the tremendous alteration of diet components. Nevertheless, there is still no unified understanding about its long-term effects in lambs. In this study, sixty 20-day-old lambs were assigned into ewe-rearing(ER) and artificial-rearing(AR) treatments to evaluate the effects of AR strategy on ruminal microbiota, fermentation, and morphology of pre-weaning lambs(from 20 to 60 days of age) and its long-term effects in the fattening stage(from 61 to 180 days of age). During the pre-weaning stage, ER lambs were breastfed and supplemented starter, while AR lambs were artificially fed with milk replacer and starter. During the fattening stage, all lambs in both treatments were fed with the same fattening diets. At 60, 120 and 180 days of age, 6 lambs from each group were slaughtered to collect rumen content and tissue samples. Compared with ER lambs, the dry matter feed intakes of AR lambs increased(Ply gain(ADG) from 61 to 120 days of age(Plthough there was no difference in short-chain fatty acid(SCFA, including acetate, propionate, and butyrate) between treatments before weaning(P>0.05), it was higher(Plambs compared with ER lambs at the fattening stage. The rumen keratin layer of AR lambs was thinner(Plambs. Along with lamb growth from 60 to 180 days of age, the differences in rumen bacterial diversity between AR and ER treatments grew more distinct(Plambs, AR lambs increased(Plum Spirochaetes and genus Treponema at 60 days of age, phylum Actinobacteria and genus Succiniclasticum at 120 days of age, and phylum Proteobacteria at 180 days of age, but decreased genus Selenomonas from 60 to 180 days of age, and Anaerovibrio at 180 days of age. In summary,

关键词： artificial rearing lamb rumen microbiome rumen fermentation growth

The impact of N-terminal phosphorylation on lHCII conformation in state transition

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Acta Mechanica Sinica 2014年第3期30卷 447-456页

作者： Jin-Hong Ding Ning li Man-liu Wang Yan Zhang Shou-qin lü Mian long Key laboratory of Microgravity(National Microgravity laboratory)and Center of Biomechanics and Bioengineering Institute of MechanicsChinese Academy of Sciences

State transition is an important protection mechanism of plants for maintaining optimal efficiency through redistributing unbalanced excitation energy between photosystem II （PSII） and photosystem I （PSI）. This process depends on the reversible phosphorylation/dephosphorylation of the major light-harvesting complex II （lHCII） and its bi-directional migration between PSII and PSI. But it remains unclear how phosphorylation/dephosphorylation modulates the lHCII conformation and further regulates its reversible migration. Here molecular dynamics simulations （MDS） were employed to elucidate the impact of phosphorylation on lHCII conformation. The results indicated that N-terminal phosphorylation loosened lHCII trimer with decreased hydrogen bond （H-bond） interactions and extended the distances between neighboring monomers, which stemmed from the conformational ad- justment of each monomer itself. Global conformational change of lHCII monomer started from its stromal N- terminal （including the phosphorylation sites） by enhancing its interaction to lipid membrane and by adjusting the interaction network with surrounded inter-monomer andintra-monomer transmembrane helixes of B, C, and A, and finally triggered the reorientation of transmembrane helixes and transferred the conformational change to luminal side helixes and loops. These results further our understanding in molecular mechanism of lHCII migration during state transition from the phosphorylation-induced microstructural feature of lHCII.

关键词： State transition lHCII Phosphorylation Conformation

Effect of HSP70 antisense RNA on normal sorghum pollen formation

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Chinese Science Bulletin 1997年第23期42卷 1990-1994页

作者： Chen, JN Fu, HY lu, ZX qin, HY Zhang, l Guo, ZB Chinese Acad Sci Genet Inst Beijing 100101 Peoples R China

IT has been found that heat shock proteins (hsp) exist universally in animals, plants, microbesand human beings. Some of hsps possess functions of molecular chaperons, such as hsp60,hsp70 and hsp90, which participate in folding and assembling polypeptides to functional struc-tures and transferring them into suitable sites. They also undertake repairing damaged cellularDNA and nucleolus. Therefore, they are house-keeping proteins and play an importantrole in maintaining normal cellular life and functions and in cellular response to environmentalstresses. There exists high homology in DNA sequence among the hsp of the same molecularweight across species. We have first reported the close relationship between hsps

关键词： heat shock protein antisense RNA male sterility sorghum pollen.

Moving object extraction based on saliency detection and adaptive background model

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Optoelectronics letters 2020年第1期16卷 59-64页

作者： SUN Pei-ye lülian-rong qin Juan School of Electrical and Electronic Engineering Tianjin University of TechnologyTianjin 300384China

For the ghost in visual background extractor(Vi Be)algorithm and the influence of dynamic background,an improved Vi Be algorithm is proposed to extract moving object in this *** way of background acquisition during modeling is improved to eliminate the *** the saliency of the pre-M-frame,and synthetic relatively real *** with the background can avoid the generation of *** selection of thresholds in the model is improved to reduce the impact of the dynamic *** the thresholds adaptively according to the background *** addition,find the inner contour of extracted object to fill,which makes the detected targets more *** results show that the presented algorithm effectively removes ghosts and enhances anti-interference *** with several existing methods,the presented algorithm has better performance.

关键词： ghost algorithm remove

Exploring local Regularities for 3D Object Recognition

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Chinese Journal of Mechanical Engineering 2016年第6期29卷 1104-1113页

作者： TIAN Huaiwen qin Shengfeng College of Mechanical Engineering Southwest Jiaotong University Department of Design Northumbria University

In order to find better simplicity measurements for 3D object recognition, a new set of local regularities is developed and tested in a stepwise 3D reconstruction method, including localized minimizing standard deviation of angles（l-MSDA）, localized minimizing standard deviation of segment magnitudes（l-MSDSM）, localized minimum standard deviation of areas of child faces （l-MSDAF）, localized minimum sum of segment magnitudes of common edges （l-MSSM）, and localized minimum sum of areas of child face （l-MSAF）. Based on their effectiveness measurements in terms of form and size distortions, it is found that when two local regularities： l-MSDA and l-MSDSM are combined together, they can produce better performance. In addition, the best weightings for them to work together are identified as 10% for l-MSDSM and 90% for l-MSDA. The test results show that the combined usage of l-MSDA and l-MSDSM with identified weightings has a potential to be applied in other optimization based 3D recognition methods to improve their efficacy and robustness.

关键词： stepwise 3D reconstruction localized regularities 3D object recognition polyhedral objects line drawing

Efficient Network Dismantling via Node Explosive Percolation

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Communications in Theoretical Physics 2019年第6期71卷 764-772页

作者： Shao-Meng qin Xiao-long Ren lin-Yuan lü College of Science Civil Aviation University of ChinaTianjin300300China Computational Social Science ETH ZurichClausiusstra■508092 ZurichSwitzerland Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu610065China Alibaba Research Center for Complexity Sciences Hangzhou Normal UniversityHangzhou310027China

The network dismantling problem asks the minimum separate node set of a graph whose removal will break the graph into connected components with the size not larger than the one percentage of the original *** problem has attracted much attention recently and a lot of algorithms have been proposed. However, most of the network dismantling algorithms mainly focus on which nodes are included in the minimum separate set but overlook how to order them for removal, which will lead to low general efficiency during the dismantling process. In this paper,we reformulate the network dismantling problem by taking the order of nodes’ removal into consideration. An efficient dismantling sequence will break the network quickly during the dismantling processes. We take the belief-propagation guided decimation(BPD) dismantling algorithm, a state-of-the-art algorithm, as an example, and employ the node explosive percolation(NEP) algorithm to reorder the early part of the dismantling sequence given by the BPD. The proposed method is denoted as the NEP-BPD algorithm(NBA) here. The numerical results on Erd¨os-R′enyi graphs,random-regular graphs, scale-free graphs, and some real networks show the high general efficiency of NBA during the entire dismantling process. In addition, numerical computations on random graph ensembles with the size from 210 to219 exhibit that the NBA is in the same complexity class with the BPD algorithm. It is clear that the NEP method we used to improve the general efficiency could also be applied to other dismantling algorithms, such as Min-Sum algorithm,equal graph partitioning algorithm and so on.

关键词： network dismantling explosive percolation network robustness feedback vertex set

Procreating Tiles of Double Commutative-Step Digraphs

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Acta Mathematicae Applicatae Sinica 2008年第2期24卷 185-194页

作者： Jian-qin Zhou Telecommunication School Hangzhou Dianzi University Hangzhou 310018 China Department of Computer Science Anhui University of Technology Ma'anshan 243002 China

Double commutative-step digraph generalizes the double-loop digraph. A double commutative-step digraph can be represented by an l-shaped tile, which periodically tessellates the plane. Given an initial tile l（l, h, x, y）, Aguil5 et al. define a discrete iteration l（p） = l（l ＋ 2p, h ＋ 2p, x ＋ p, y ＋ p）, p = 0, 1, 2,..., over l-shapes （equivalently over double commutative-step digraphs）, and obtain an orbit generated by l（l, h, x,y）, which is said to be a procreating k-tight tile if l（p）（p = 0, 1, 2, ~ ~ ~ ） are all k-tight tiles. They classify the set of l-shaped tiles by its behavior under the above-mentioned discrete dynamics and obtain some procreating tiles of double commutative-step digraphs. In this work, with an approach proposed by li and Xu et al., we define some new discrete iteration over l-shapes and classify the set of tiles by the procreating condition. We also propose some approaches to find infinite families of realizable k-tight tiles starting from any realizable k-tight l-shaped tile l（l, h, x, y）, 0 ≤ y - x ≤ 2k ＋ 2. As an example, we present an infinite family of 3-tight optimal double-loop networks to illustrate our approaches.

关键词： Double-loop digraph double commutative-step digraph l-shaped tile procreate infinite family

Properties of Collagen/Sodium Alginate Hydrogels for Bioprinting of Skin Models

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Journal of Bionic Engineering 2023年第1期20卷 105-118页

作者： Tian Jiao qin lian Weilong lian Yonghui Wang Dichen li Rui l.Reis Joaquim Miguel Oliveira State Key laboratory for Manufacturing System Engineering Xi’an Jiaotong UniversityXi’an710049China Shaanxi Ketao-AM Technology Co. Ltd.Xi’an710100China B’s Research Group I3Bs—Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoBarco4805-017GuimarãesPortugal ICVS/3B’s–PT Government Associate laboratory Barco4805-017GuimarãesPortugal

3D printing technology has great potential for the reconstruction of human ***,the reconstructed skin has some differences from natural skin,largely because the hydrogel used does not have the appropriate biological and physical properties to allow healing and *** study examines the swelling,degradability,microstructure and biological properties of Collagen/Sodium Alginate(Col/SA)hydrogels of differing compositions for the purposes of skin *** the content of sodium alginate causes the hydrogel to exhibit stronger mechanical and swelling properties,a faster degradation ratio,smaller pore size,and less favorable biological *** optimal 1%collagen hydrogel was used to print bi-layer skin in which fibroblasts and keratinocytes showed improved spreading and proliferation as compared to other developed *** Col/SA hydrogels presented suitable tunability and properties to be used as a bioink for bioprinting of skin aiming at finding applications as 3D models for wound healing research.

关键词： Bioink Bioprinting-Collagen sodium alginate hydrogel-Skin Wound healing Bionic