Search results for " plants"

showing 10 items of 860 documents

On thermoeconomics of energy systems at variable load conditions: integrated optimization of plant design and operation

2007

Abstract Thermoeconomics has been assuming a growing role among the disciplines oriented to the analysis of energy systems, its different methodologies allowing solution of problems in the fields of cost accounting, plant design optimisation and diagnostic of malfunctions. However, the thermoeconomic methodologies as such are particularly appropriate to analyse large industrial systems at steady or quasi-steady operation, but they can be hardly applied to small to medium scale units operating in unsteady conditions to cover a variable energy demand. In this paper, the fundamentals of thermoeconomics for systems operated at variable load are discussed, examining the cost formation process an…

ExergyEngineeringPrimary energyRenewable Energy Sustainability and the Environmentbusiness.industryThermoeconomics has been assuming a growing role among the disciplines oriented to the analysis of energy systems its different methodologies allowing solution of problems in the fields of cost accounting plant design optimisation and diagnostic of malfunctions. However the thermoeconomic methodologies as such are particularly appropriate to analyse large industrial systems at steady or quasisteady operation but they can be hardly applied to small to medium scale units operating in unsteady conditions to cover a variable energy demand. In this paper the fundamentals of thermoeconomics for systems operated at variable load are discussed examining the cost formation process and separately the cost fractions related to capital depreciation (which require additional distinctions with respect to plants in steady operation) and to exergy consumption. The relevant effects of the efficiency penalty due to off design operation on the exergetic cost of internal flows are also examined. An original algorithm is proposed for the integrated optimization of plant design and operation based on an analytical solution by the Lagrange multipliers method and on a multi-objective decision function expressed either in terms of net cash flow or primary energy saving. The method is suitable for application in complex energy systems such as ‘‘facilities of components of a same product’’ connected to external networks for power or heat distribution. For demonstrative purposes the proposed thermoeconomically aided optimization is performed for a grid connected trigeneration system to be installed in a large hotel.Energy Engineering and Power TechnologyCost accountingThermoeconomicsGridEnergy conservationVariable (computer science)symbols.namesakeFuel TechnologyNuclear Energy and EngineeringLagrange multipliersymbolsProcess engineeringbusinessSimulation
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Corporate Social Responsibility and Sustainability of Local Community: A Case Study of the Transnational Project in China-Pakistan Economic Corridor

2019

While achieving great benefits, the Belt and Road Initiative (BRI) has triggered potential problems between the transnational projects and local communities in the participant countries. However, there is still a knowledge gap on how corporate social responsibility (CSR) is adopted, and how CSR affects the local community. Based on a context of China-Pakistan Economic Corridor (CPEC), this research exploits a combination of qualitative and quantitative methods to fill the gap. It finds that the CSR activities in the CPEC project are initiated by the long-term CSR initiative. Organized by the professional CSR foundation in an autonomous environment, the panoramic CSR activities are governed …

ExploitGeography Planning and DevelopmentTJ807-830Context (language use)Management Monitoring Policy and Law0603 philosophy ethics and religionTD194-195China-Pakistan Economic CorridorRenewable energy sourcesVDP::Samfunnsvitenskap: 200::Økonomi: 2100502 economics and businessGE1-350Chinalocal communitycorporate social responsibilityEnvironmental effects of industries and plantsRenewable Energy Sustainability and the Environmentbusiness.industry05 social sciences06 humanities and the artsPublic relationssustainabilityLocal communityEnvironmental sciencesSustainabilityCorporate social responsibility060301 applied ethicsBusiness050203 business & managementSustainability
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Binder and Mixture Fatigue Performance of Plant-Produced Road Surface Course Asphalt Mixtures with High Contents of Reclaimed Asphalt

2019

The aged properties of Reclaimed Asphalt (RA) binders are one of the main factors working against their utilisation in high-RA content (&gt

Fatigue crackingMaterials scienceGeography Planning and Development0211 other engineering and technologiesroad surface coursesTJ807-83002 engineering and technologyfatigue performanceManagement Monitoring Policy and LawTD194-195Renewable energy sources0203 mechanical engineering021105 building & constructionSettore ICAR/04 - Strade Ferrovie Ed AeroportiGE1-350Composite materialreclaimed asphalt (RA)rejuvenatorsEnvironmental effects of industries and plantsRenewable Energy Sustainability and the Environmentasphalt binderroad surface courseEnvironmental sciences020303 mechanical engineering & transportsTensile fatigueAsphaltRoad surfaceDynamic shear rheometerSustainability
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Contribución al conocimiento de la flora alóctona abulense (Ávila, España)

2012

Se aportan datos corológicos de catorce plantas vasculares presentes en la provincia de Ávila (España). De ellas, cinco son primeras citas provinciales: Chamaesyce prostrata (Aiton) Small, Conyza sumatrensis (Retz.) E. Walker, Helianthus tuberosus L., Melia azedarach L. y Panicum miliaceum L. El resto de plantas vasculares no son muy conocidas en la zona. Para cada una de ellas se aporta información florística y bibliográfica.SUMMARY: Chorological data concerning fourteen species of invasive vascular plants in Ávila province (Spain) are shown. Among them, we must highlight Chamaesyce prostrata (Aiton) Small, Conyza sumatrensis (Retz.) E. Walker, Helianthus tuberosus L., Melia azedarach L. a…

Flora AlóctonaÁvilaVascular plantsBotánicaCiencias biológicasEspaña:CIENCIAS DE LA VIDA [UNESCO]lcsh:QK1-989flora vascularPlantas vascularesChorologyAlien floraCorologíaSpainlcsh:BotanyUNESCO::CIENCIAS DE LA VIDACastilla y LeónFlora Montiberica
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Contribution to the knowledge of the therophytic flora of Sardinia

2003

The abundance of therophytes, largely contributes to the naturalistic value of Sardinia. Moreover, most of the annual species belonging to the Sardinian flora have an historical and cultural value, as they followed the men in his migrations and still reflect the different ways of traditional land exploitation characterising the island. As a matter of fact, the development of human technology increased number and frequency of the annual plants of Sardinia. Nowadays, annuals occur in several habitats of the island, where they play a primary ecological role, both as biomass producers and protecting the soil from rill erosion during the rainy season, at least where the environmental factors do …

Flora annual plants therophytes Sardinia
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The genus Orobanche (Orobanchaceae) in Sicily

2011

The taxa of Orobanche occurring in Sicily and on the surrounding islets have been surveyed in the field and in herbaria. In total, 23 species occur in the region. O. litorea is found to be distinct from O. minor and O. thapsoides from O. canescens. O. crenata and O. ramosa are serious pests that cause heavy losses to broad bean and tomato cultures, respectively.

Flora taxonomy broomrapes parasitic plants Italy.
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Noves dades per a la flora valenciana

2014

Es dóna notícia de la troballa d’algunes localitats noves de plantes amb valor corològic per a la flora dela Comunitat Valenciana, destacant Armeria trachyphylla Lange com a novetat per a la flora valenciana.Mots clau: Comunitat Valenciana, corologia, Espanya, plantes vasculars.New data to the valencian flora.Data about some new localities of plants with chorological interest for the valencian flora are reported,highlighting Armeria trachyphylla Lange as a new species for the valencian list. 

FloraBotànicaComunitat Valenciana; corologia; Espanya; plantes vasculars; chorology; Spain; Valencian Community; vascular plants
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Exploring natural products-based cancer therapeutics derived from egyptian flora

2020

Abstract Ethnopharmacological relevance Egyptian plants are a rich source of natural molecules, representing considerable biodiversity due to climate variations between the Northern, Southern, Eastern and Western regions of the country. Sinai is considered a precious nature reserves preserving flora, fauna, marine organisms, and historical habitats with ancient origins. Here, traditional medicinal approaches have been used for hundreds of years. Healthy lifestyles, low levels of stress and microbial infections, and a dependence on flora and herbal medicine might in combination explain why the burden of cancer is lower in some regions than in others. Aim of the study The primary aim of this …

FloraNigella sativa03 medical and health sciences0302 clinical medicineNeoplasmsDrug DiscoveryAnimalsHumansMedicinal plants030304 developmental biologyPharmacologyBiological Products0303 health sciencesPlants MedicinalbiologyTraditional medicineApocynaceaeEuphorbiaceaefood and beveragesbiology.organism_classificationIsolation (microbiology)Antineoplastic Agents Phytogenic030220 oncology & carcinogenesisEgyptLamiaceaeEthnomedicinePhytotherapyJournal of Ethnopharmacology
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Traditional medicine as a source of new therapeutic agents against psoriasis.

2000

In the frame of traditional medicine, the use in the treatment of psoriasis of some plants typical of the flora of Sicily is reported. A preliminary search on some plants used for the treatment of psoriasis in Asia, South America and Africa is also reported.

Floramedicine.medical_specialtyMEDLINEAlternative medicinelaw.inventionlawPsoriasisDrug DiscoverymedicineHumansPsoriasisMedicinal plantsSicilyPharmacologyPlants MedicinalTraditional medicinePlant Stemsbusiness.industryPlant Extractsfungifood and beveragesRhagadiolus stellatusGeneral Medicinemedicine.diseasePlant LeavesMedicine TraditionalbusinessPhytotherapyPhytotherapyFitoterapia
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The competitive development of flowers and ornamentals firms through the use of web-marketing strategies: a survey in the convergence objective regio…

2011

The growth of ICT, and in particular the integrated use of internet within firm marketing strategies, has brought about deep changes at both sector and firm level. Firm processes have been drastically modified in their communication and promotional aspects. In particular, firmcustomer relationships are changing and therefore internet represents a preferential means, not only for transferring the firm image in the global communication, but above all in order to build a dialogue and a continuous interaction which contribute to consumers’ fidelization. This empirical research proposal is to be considered in the framework of “Business to Consumer” relationships and is addressed to the flowers a…

Flower and ornamental plants firmconvergence RegionsEconomybusiness.industrySettore AGR/01 - Economia Ed Estimo RuraleBusinessConvergence (relationship)Online advertisingweb-marketingIndustrial organizationWebsite qualitywebsite quality
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