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power plant control

Shang-Ming Huang, Chia-Hung Kuo, Chun-An Chen, Yung-Chuan Liu, Chwen-Jen Shieh
Piceid, a naturally occurring derivative of resveratrol found in many plants, has recently been considered as a potential nutraceutical. However, its poorly water-soluble property could cause a coupled problem of biological activities concerning drug dispersion and absorption in human body, which is still unsolved now. Liposome, a well-known aqueous carrier for water-insoluble ingredients, is commonly applied in drug delivery systems. In this study, a feasible approach for solving the problem is that the targeted piceid was encapsulated into a liposomal formula as aqueous substrate to overcome its poor water-solubility...
May 2017: Ultrasonics Sonochemistry
Heather T Root, Jake Verschuyl, Thomas Stokely, Paul Hammond, Melissa A Scherr, Matthew G Betts
Intensive forest management (IFM) promises to help satisfy increasing global demand for wood but may come at the cost of local reductions to forest biodiversity. IFM often reduces early seral plant diversity as a result of efforts to eliminate plant competition with crop trees. If diversity is a function of bottom-up drivers, theory predicts that specialists at lower trophic levels (e.g., insect herbivores) should be particularly sensitive to reductions in plant diversity. We conducted a stand-level experiment to test bottom-up controls on moth community structure, as mediated by degrees of forest management intensity...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
Miaomiao Cheng, Guorui Zhi, Wei Tang, Shijie Liu, Hongyan Dang, Zheng Guo, Jinhong Du, Xiaohui Du, Weiqi Zhang, Yujie Zhang, Fan Meng
In order to improve the regional air quality, many control strategies have been developed by Chinese government for reducing air pollutant emission from power plants, industrial and transport sources during the past decade. However, little attention has been paid to residential combustion sources. To fill the knowledge gap, a series of surveys were carried out to investigate the residential energy use in Beijing-Tianjin-Hebei (BTH) region during the period of 2013-2014. Study shows that the actual average amount of residential coal consumption is over 0...
December 28, 2016: Science of the Total Environment
Ludivine Hocq, Fabien Sénéchal, Valérie Lefebvre, Arnaud Lehner, Jean-Marc Domon, Jean-Claude Mollet, Jérémy Dehors, Karine Pageau, Paulo Marcelo, Francois Guerineau, Katra Kolsek, Davide Mercadante, Jerome Pelloux
The fine-tuning of the degree of methylesterification of cell wall pectin is a key to regulate cell elongation and ultimately the shape of plant body. Pectin methylesterification is spatio-temporally controlled by pectin methylesterases (PMEs, 66 members in Arabidopsis). The comparably large number of proteinaceous pectin methylesterase inhibitors (PMEIs, 76 members in Arabidopsis) questions the specificity of the PME-PMEI interaction and the functional role of such abundance. To understand the difference, or redundancy, between PMEIs, we used Molecular Dynamics (MD) to predict the behaviour of two PMEIs that are co-expressed and have distinct effects on plant development: AtPMEI4 and AtPMEI9...
December 29, 2016: Plant Physiology
Huihui Liang, Pengfei Gu, Jianzhong Tang, Weihua Chen, Feng Gao
Managing the aging of digital control systems ensures that nuclear power plant systems are in adequate safety margins during their life cycles. Software is a core component in the execution of control logic and differs between digital and analog control systems. The hardware aging management for the digital control system is similar to that for the analog system, which has matured over decades of study. However, software aging management is still in the exploratory stage. Software aging evaluation is critical given the higher reliability and safety requirements of nuclear power plants...
2016: SpringerPlus
D Belyi, G Pleskach, O Nastina, G Sidorenko, N Kursina, O Bazyka, O Kovalev, A Chumak, I Abramenko
OBJECTIVE: This study devoted to specific features of coronary heart disease (CHD) development in emergency work ers (EW) of the accident at the Chernobyl nuclear power plant (ChNPP) based on analysis the interaction between radiation and non radiation risk factors and single nucleotide polymorphism (SNP) rs966221 of phosphodiesterase (PDE) 4D gene. METHODS: It was examined 397 men with CHD, including 274 EW of 1986-1987 and 123 non irradiated persons (con trol group) who were 66±10 and 69±11 years old relatively...
December 2016: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
Yukino Nakamura, Toru Kudo, Shin Terashima, Misa Saito, Eiji Nambara, Kentaro Yano
For proper control of biological activity, some key genes are highly expressed in a particular spatiotemporal domain. Mining of such spatiotemporally expressed genes using large-scale gene expression data derived from a broad range of experimental sources facilitates our understanding of genome-scale functional gene networks. However, comprehensive information on spatiotemporally expressed genes is lacking in plants. To collect such information, we devised a new index, δdmax, which is the maximum difference in relative gene expression levels between sample runs which are neighboring when sorted by the levels...
December 23, 2016: Plant & Cell Physiology
C B Wu, G H Huang, Z P Liu, J L Zhen, J G Yin
In this study, an inexact multistage stochastic mixed-integer programming (IMSMP) method was developed for supporting regional-scale energy system planning (EPS) associated with multiple uncertainties presented as discrete intervals, probability distributions and their combinations. An IMSMP-based energy system planning (IMSMP-ESP) model was formulated for Qingdao to demonstrate its applicability. Solutions which can provide optimal patterns of energy resources generation, conversion, transmission, allocation and facility capacity expansion schemes have been obtained...
March 1, 2017: Journal of Environmental Management
A T Amaral, R M Ribeiro, P H D Santos, T P S Poltronieri, J M S Vivas, I F S Gerhardt, B M Carvalho, C S Freitas, S B Miranda
Northern leaf blight (NLB), caused by Exserohilum turcicum, is one of the main foliar diseases that affect popcorn culture. Farmers use many control measures to minimize damage caused by this disease, among which, the use of cultivars with genetic resistance is the most effective and economical. The aim of this study was to investigate genetic variability influencing resistance to NLB in 25 popcorn maize lines grown under high and low phosphorus conditions in relation to foliar fungal disease caused by E. turcicum...
December 19, 2016: Genetics and Molecular Research: GMR
A Sadeghi, A Mondini, E Del Dottore, V Mattoli, L Beccai, S Taccola, C Lucarotti, M Totaro, B Mazzolai
We present the design and development of a plant-inspired robot, named Plantoid, with sensorized robotic roots. Natural roots have a multi-sensing capability and show a soft bending behaviour to follow or escape from various environmental parameters (i.e., tropisms). Analogously, we implement soft bending capabilities in our robotic roots by designing and integrating soft spring-based actuation (SSBA) systems using helical springs to transmit the motor power in a compliant manner. Each robotic tip integrates four different sensors, including customised flexible touch and innovative humidity sensors together with commercial gravity and temperature sensors...
December 20, 2016: Bioinspiration & Biomimetics
Ming Ding, Qianlong Zhu
Hardware protection and control action are two kinds of low voltage ride-through technical proposals widely used in a permanent magnet synchronous generator (PMSG). This paper proposes an innovative clustering concept for the equivalent modeling of a PMSG-based wind power plant (WPP), in which the impacts of both the chopper protection and the coordinated control of active and reactive powers are taken into account. First, the post-fault DC link voltage is selected as a concentrated expression of unit parameters, incoming wind and electrical distance to a fault point to reflect the transient characteristics of PMSGs...
2016: SpringerPlus
Qingru Wu, Shuxiao Wang, Guoliang Li, Sai Liang, Che-Jen Lin, Yafei Wang, Siyi Cai, Kaiyun Liu, Jiming Hao
Mercury pollution control has become a global goal. The accurate estimate of long-term mercury emissions in China is critical to evaluate the global mercury budget and the emission reduction potentials. In this study, we used a technology-based approach to compile a consistent series of China's atmospheric mercury emissions at provincial level from 1978 to 2014. China totally emitted 13 294 t of anthropogenic mercury to air during 1978-2014, in which gaseous elemental mercury, gaseous oxidized mercury, and particulate-bound mercury accounted for 58...
December 20, 2016: Environmental Science & Technology
Dorsaf Moalla Rekik, Sameh Ben Khedir, Kamilia Ksouda Moalla, Naziha Grati Kammoun, Tarek Rebai, Zouheir Sahnoun
Background. Medicinal plants have proved at all times to be a powerful remedy for health care. Accordingly, grape seed, sesame, and fenugreek extracted oils with pharmacological properties are investigated as wound treatments. This study assesses the potential of our oils for healing wounds induced on rats. Methods. Phytochemical analyses of oils have involved: quality value, polyphenol, chlorophylls, carotene, and fatty acids. Antibacterial activity was carried out. Antioxidant activity was evaluated: the scavenging effect on DPPH radicals, the reducing power, and β-carotene discoloration...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
Jun Koarashi, Mariko Atarashi-Andoh, Takeshi Matsunaga, Yukihisa Sanada
The Fukushima Daiichi nuclear power plant disaster caused serious radiocesium ((137)Cs) contamination of forest ecosystems over a wide area. Forest-floor organic layers play a key role in controlling the overall bioavailability of (137)Cs in forest ecosystems; however, there is still an insufficient understanding of how forest types influence the retention capability of (137)Cs in organic layers in Japanese forest ecosystems. Here we conducted plot-scale investigations on the retention of (137)Cs in organic layers at two contrasting forest sites in Fukushima...
December 15, 2016: Scientific Reports
Romdhane Rekaya, Shannon Smith, El Hamidi Hay, Nourhene Farhat, Samuel E Aggrey
Errors in the binary status of some response traits are frequent in human, animal, and plant applications. These error rates tend to differ between cases and controls because diagnostic and screening tests have different sensitivity and specificity. This increases the inaccuracies of classifying individuals into correct groups, giving rise to both false-positive and false-negative cases. The analysis of these noisy binary responses due to misclassification will undoubtedly reduce the statistical power of genome-wide association studies (GWAS)...
2016: Application of Clinical Genetics
Ina Thormählen, Arkadius Zupok, Josephin Rescher, Jochen Leger, Stefan Weissenberger, Julia Groysman, Anne Orwat, Gilles Chatel-Innocenti, Emmanuelle Issakidis-Bourguet, Ute Armbruster, Peter Geigenberger
Sunlight represents the energy source for photosynthesis and plant growth. When growing in the field, plant photosynthesis has to manage strong fluctuations in light intensities. Regulation based on the thioredoxin (Trx) system is believed to ensure light-responsive control of photosynthetic reactions in the chloroplast. However, direct evidence for a role of this system in regulating dynamic acclimation of photosynthesis in fluctuating conditions is largely lacking. In this report we show that the ferredoxin-dependent Trxs m1 and m2 as well as the NADPH-dependent NTRC are both indispensable for photosynthetic acclimation in fluctuating light intensities...
January 9, 2017: Molecular Plant
Laure Brigitte Kouitcheu Mabeku, Bertrand Eyoum Bille, Thibau Flaurant Tchouangueu, Eveline Nguepi, Hubert Leundji
CONTEXT: Bryophyllum pinnatum (Lam.) Kurz (Crassulaceae) is a plant known for its antiulcer properties. OBJECTIVE: This study evaluates the anti-Helicobacter pylori activity of Bryophyllum pinnutum methanol extract with a mouse model and its antioxidant properties. MATERIALS AND METHODS: Dried leaves of Bryophyllum pinnutum were extracted with methanol and ethyl acetate. Broth microdilution method was used to evaluate the anti-Helicobacter activity of extract samples in vitro...
December 2017: Pharmaceutical Biology
Ming Wang, Hailing Jin
Plant pathogens cause serious crop losses worldwide. Recent new studies demonstrate that spraying double-stranded RNAs (dsRNAs) and small RNAs (sRNAs) that target essential pathogen genes on plant surfaces confer efficient crop protection. This so-called spray-induced gene silencing (SIGS) strategy of disease control is potentially sustainable and environmentally friendly.
January 2017: Trends in Microbiology
O Parra, A M Gallego, A Urrea, L F Rojas, C Correa, L Atehortúa
Cocoa butter (CB) is composed of 96% palmitic, stearic, oleic, linoleic and linolenic fatty acids that are responsible for the hardness, texture and fusion properties of chocolate. Through in vitro plant cell culture it is possible to modify CB lipid profiles and to study the fatty acid biosynthesis pathway on a subcellular level, evaluating fundamental aspects to enhance in vitro fatty acid production in a specific and controlled way. In this research, culture media was supplemented with acetate, biotin, pyruvate, bicarbonate and glycerol at three different concentrations and the effects on the biomass production (g/L), cell viability, and fatty acids profile and production was evaluated in in vitro cell suspensions culture...
November 25, 2016: Plant Physiology and Biochemistry: PPB
Luis A Vazquez, Francisco Jurado, Carlos E Castaneda, Victor Santibanez
This paper presents a continuous-time decentralized neural control scheme for trajectory tracking of a two degrees of freedom direct drive vertical robotic arm. A decentralized recurrent high-order neural network (RHONN) structure is proposed to identify online, in a series-parallel configuration and using the filtered error learning law, the dynamics of the plant. Based on the RHONN subsystems, a local neural controller is derived via backstepping approach. The effectiveness of the decentralized neural controller is validated on a robotic arm platform, of our own design and unknown parameters, which uses industrial servomotors to drive the joints...
December 1, 2016: IEEE Transactions on Neural Networks and Learning Systems
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