Dalian Nationalities University

Dalian, China

Dalian Nationalities University is located in Dalian, Liaoning, People's Republic of China and directly supervised by the State Ethnic Affairs Commission. Wikipedia.

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Ruan C.-J.,Dalian Nationalities University | Teixeira Da Silva J.A.,Kagawa University
Critical Reviews in Biotechnology | Year: 2011

Breeders have long been interested in understanding the biological function and mechanism of xero-halophytes and their ability for growth in drought-stricken and salinized environments. However, the mechanisms in response to stress have been difficult to unravel because their defenses require regulatory changes to the activation of multiple genes and pathways. Metabolomics is becoming a key tool in comprehensively understanding the cellular response to abiotic stress and represents an important addition to the tools currently employed in genomics-assisted selection for plant improvement. In this review, we highlight the applications of plant metabolomics in characterizing metabolic responses to salt and drought stress, and identifying metabolic quantitative trait loci (QTLs). We also discuss the potential of metabolomics as a tool to unravel stress response mechanisms, and as a viable option for the biotechnological improvement of xero-halophytes when no other genetic information such as linkage maps and QTLs are available, by combining with germplasm-regression-combined marker-trait association identification. © 2011 Informa Healthcare USA, Inc.

Ruan C.-J.,Dalian Nationalities University | Shao H.-B.,Chinese Academy of Sciences | Teixeira Da Silva J.A.,Kagawa University
Critical Reviews in Biotechnology | Year: 2012

Global warming is one of the most serious challenges facing us today. It may be linked to the increase in atmospheric CO 2 and other greenhouse gases (GHGs), leading to a rise in sea level, notable shifts in ecosystems, and in the frequency and intensity of wild fires. There is a strong interest in stabilizing the atmospheric concentration of CO 2 and other GHGs by decreasing carbon emission and/or increasing carbon sequestration. Biotic sequestration is an important and effective strategy to mitigate the effects of rising atmospheric CO 2 concentrations by increasing carbon sequestration and storage capacity of ecosystems using plant photosynthesis and by decreasing carbon emission using biofuel rather than fossil fuel. Improvement of photosynthetic carbon assimilation, using transgenic engineering, potentially provides a set of available and effective tools for enhancing plant carbon sequestration. In this review, firstly different biological methods of CO 2 assimilation in C 3, C 4 and CAM plants are introduced and three types of C 4 pathways which have high photosynthetic performance and have evolved as CO 2 pumps are briefly summarized. Then (i) the improvement of photosynthetic carbon assimilation of C 3 plants by transgenic engineering using non-C 4 genes, and (ii) the overexpression of individual or multiple C 4 cycle photosynthetic genes (PEPC, PPDK, PCK, NADPME and NADP-MDH) in transgenic C 3 plants (e.g. tobacco, potato, rice and Arabidopsis) are highlighted. Some transgenic C 3 plants (e.g. tobacco, rice and Arabidopsis) overexpressing the FBP/SBPase, ictB and cytochrome c 6 genes showed positive effects on photosynthetic efficiency and growth characteristics. However, over the last 28 years, efforts to overexpress individual, double or multiple C 4 enzymes in C 3 plants like tobacco, potato, rice, and Arabidopsis have produced mixed results that do not confirm or eliminate the possibility of improving photosynthesis of C 3 plants by this approach. Finally, a prospect is provided on the challenges of enhancing carbon assimilation of C 3 plants using transgenic engineering in the face of global warming, and the trends of the most promising approaches to improving the photosynthetic performance of C 3 plants. © 2012 Informa Healthcare USA, Inc.

Ruan C.-J.,Dalian Nationalities University | da Silva J.A.T.,Kagawa University
Critical Reviews in Plant Sciences | Year: 2011

Since Darwin observed the reconfiguration of pollinia in orchards and referred to it as a function to reduce self-pollination, diverse floral movements have been investigated and various hypotheses have been proposed to explain their adaptive significance. However, adaptive significance of floral movement in some species has yet to be fully explained. Increasing evidence suggests that some floral movements, which have previously been considered as a mechanism to avoid self-pollination, may act as a mechanism to reduce intrafloral male-female interference. In this review, we first explore insect-induced floralmovement-such as secondary pollen presentation-that enhances the efficiency and accuracy of pollination. Secondly, we outline the active movements of different floral structures of pistil (style), stamen (filament, anther, pollen), and corolla, such as flexistyly, pollen sliding and catapulting, and anther rotation. Thirdly, we introduce movement herkogamy, which makes herkogamy decrease or increase via the movements of floral structures, especially decreased approach herkogamy via style curvature in the Malvaceae with a monadelphous column. Fourthly, we highlight the different adaptive significances in floral movements for understanding their evolution, including reduction in intrafloral male-female interference, promotion of outcrossing and/or avoidance of self-pollination, delayed autonomous selfing, and tolerance to harsh environments. In particular, we explore the possibility of three functions of one floral movement in one species, which differs from the generally recognized and conventional notion of one floral movement in one species with only one or two functional mechanisms. Finally, we provide perspectives on the challenges and opportunities for using demographic and molecular genetic approaches to (i) study the relative importance and evolutionary mechanism of different adaptive significances in one floral movement; and (ii) simultaneously investigate the floral movement and correlative traits of broader species in related or unrelated families to test how they evolved and the evolutionary relationship between their functions. © Taylor & Francis Group, LLC.

Dong B.,Dalian Nationalities University | Cao B.,Dalian Nationalities University | He Y.,Dalian Nationalities University | He Y.,University of Duisburg - Essen | And 3 more authors.
Advanced Materials | Year: 2012

A novel high excited state energy transfer pathway to overcome the phonon quenching effect in rare-earth (RE) oxide upconversion (UC) materials is reported. In Er(Tm)-Yb oxide systems, an extraordinary enhancement of UC luminescence efficiency with four orders of magnitude is realized by Mo co-doping. The RE oxides with significant UC efficiency are successfully utilized for temperature sensing and in vivo imaging. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Li B.-H.,Dalian Nationalities University | Zhang N.,University of Manchester | Smith R.,University of Manchester
Applied Energy | Year: 2016

An improved rate-based model of the typical CO2 capture process by aqueous MonoEthanolAmine (MEA) solution is built within Aspen Plus V8.0 software in this study. The improved model is built on the basis of an example model coming along with Aspen Plus V8.0, and thermodynamic model of ENRTL-RK is adopted. Improvements include the washing section of the absorption column is strictly modelled by a separate column, and the error on mass balance of MEA is greatly reduced. The new model is validated by the recently published pilot-scale experimental results of the absorption of CO2 by MEA solution, in which both absorption and desorption columns are equipped with the structured packing Sulzer Mellapak 250.Y™. It predicts the experimental profiles of the temperature and the concentration of CO2 in the liquid phase with an accuracy of ±4%, and obviously much better than recently reported model with an accuracy of ±8%. Important insights have been obtained on the function of washing sections on the top of both absorber and desorption column, the factors to determine the flowrates of make-up water and recycle water around the washing section of the absorber are first analyzed. © 2015 Elsevier Ltd.

Li B.-H.,Dalian Nationalities University | Chang C.-T.,National Cheng Kung University
Industrial and Engineering Chemistry Research | Year: 2010

It has been well-established that the energy and capital costs of a heat exchanger network are both dependent upon the minimum allowable temperature approach ΔTmin. As a result of the rapidly growing oil prices in recent years, there appears to be an urgent need to retrofit the existing "optimal" networks so as to reduce the current utility consumption rates with smaller ΔTmin values. A simple pinch-based approach is proposed here to accomplish this task while keeping additional capital investment to a reasonable level. In particular, every cross-pinch match is removed, and its heat loads on the hot and cold streams are both divided into two according to the pinch temperatures. At either side of the pinch, the divided heat loads on each stream are combined and then matched according to a systematic procedure derived from simple pinch analysis. Two examples are provided to illustrate this procedure. © 2010 American Chemical Society.

News Article | March 4, 2016
Site: www.treehugger.com

Colin of Bike Radar points to the Bike Washing Machine (BWM), designed by students at Dalian Nationalities University and shown on Tuvie. The Tuvie Washing Machine gives the term ‘spin cycle’ a whole new meaning. Targeted at the time starved athlete or those wishing to cut down on their utility bills, it’s essentially a spin bike, where the front wheel has been replaced with a laundry drum. As you pedal, the drum spins and gets your clothing clean. We’re dreaming of spin class rooms filled with these, where patrons get a workout and a clean basket of clothing after their 45 minute session. Got a stubborn stain? We’re sure someone will create ‘stain intervals’ to see those gone. According to the designers, any energy in excess of what is needed for the washing machine is used to power the display or saved for later. Of course this was dreamed up years ago by Steven M. Johnson. See more pedal powered washing machines in Related Links below.

Wu S.L.,Dalian Nationalities University
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2015

We apply the time-dependent decoherence-free subspace theory to a Markovian open quantum system in order to present a proposal for a quantum-state engineering program. By quantifying the purity of the quantum state, we verify that the quantum-state engineering process designed via our method is completely unitary within any total engineering time. Even though the controls on the open quantum system are not perfect, the asymptotic purity is still robust. Owing to its ability to completely resist decoherence and the lack of restraint in terms of the total engineering time, our proposal is suitable for multitask quantum-state engineering program. Therefore, this proposal is not only useful for achieving the quantum-state engineering program experimentally, it also helps us build both a quantum simulation and quantum information equipment in reality. © 2015 American Physical Society.

Ruan C.,Dalian Nationalities University
African Journal of Biotechnology | Year: 2010

In the past 20 years, the major effort in plant breeding has changed from quantitative to molecular genetics with emphasis on quantitative trait loci (QTL) identification and marker assisted selection (MAS). However, results have been modest. This has been due to several factors including absence of tight linkage QTL, non-availability of mapping populations and lack of substantial time needed to develop such populations. To overcome these limitations and as an alternative to planned populations, molecular marker- trait associations have been identified by the combination between germplasm and the regression technique. In the present preview, we first surveyed the successful applications of germplasm-regression-combined (GRC) molecular marker-trait association identification in plants; secondly, we described how to do the GRC analysis and its differences from mapping QTL based on a linkage map reconstructed from the planned populations; thirdly, we considered the factors that affect the GRC association identification, including selections of optimal germplasm and molecular markers and testing of identification efficiency of markers associated with traits; and finally we discussed the future prospects of GRC marker-trait association analysis used in plant MAS/QTL breeding programs, especially in long-juvenile woody plants when no other genetic information such as linkage maps and Quantitative Trait Loci are available. © 2010 Academic Journals.

Agency: European Commission | Branch: FP7 | Program: MC-IIFR | Phase: FP7-PEOPLE-2010-IIF | Award Amount: 15.00K | Year: 2013

Sea buckthorn (Hippophae L.) is a woody, dioecious plant that can be grown in areas characterized by severe drought, high salinity and poor soil conditions. It has recently received considerable attention in Europe and China as a new berry crop with a very high nutritional value and unique medicinal properties, as well as a means of combating soil erosion. Methods must, however, be developed that enable fast and efficient identification of genotypes carrying genes for desirable plant architecture and fruit quality as well as resistance to the very detrimental dried-shrink disease (DSD) in order to achieve a sustainable commercial production of this crop. The objectives of this proposal are to investigate fruit quality parameters and DSD-resistance in already collected germplasm presently conserved in China and in Sweden, respectively, and then develop molecular techniques that will allow fast and accurate development of elite cultivars destined both for direct usage and as a parental material in plant breeding programs. Fruit quality traits and disease resistance will be screened in European and Chinese plant materials. SCAR and SSR markers associated with these traits will be identified using the germplasm-regression-combined marker-trait association analysis. Relationships between genotypic and environmental effects on desirable traits will be investigated using metabolomic techniques based on GC/LC-MS and 1H-NMR. Carefully selected genetic resource collections (gene banks) will be established both at Balsgard in Sweden and at Fuxin in China. A germplasm evaluation system, based on markers associated with desirable traits and results from the metabolomics analysis, will be constructed that provides fast and efficient identification and selection of elite genotypes with high fruit quality in combination with DSD-resistance. These tools will provide a platform for marker- and metabolomics-assisted breeding to develop further improved cultivars.

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