دانلود و نمایش مقالات مرتبط با Environmental impact::صفحه 1
بلافاصله پس از پرداخت دانلود کنید

با سلام خدمت کاربران در صورتی که با خطای سیستم پرداخت بانکی مواجه شدید از طریق کارت به کارت (6037997535328901 بانک ملی ناصر خنجری ) مقاله خود را دریافت کنید (تا مشکل رفع گردد). 

نتیجه جستجو - Environmental impact

تعداد مقالات یافته شده: 118
ردیف عنوان نوع
1 بیوپلیمر: ماده ای پایدار برای کاربردهای غذایی و پزشکی
سال انتشار: 2022 - تعداد صفحات فایل pdf انگلیسی: 22 - تعداد صفحات فایل doc فارسی: 48
پلیمرهای زیستی یک گروه پیشرو از مواد کاربردی مناسب برای کاربردهای با ارزش بالا هستند که مورد توجه محققان و متخصصان در رشته‌های مختلف قرار گرفته اند. برای درک جنبه های اساسی و کاربردی بیوپلیمرها برای رسیدگی به چندین مشکل پیچیده مرتبط با سلامت و رفاه مهم به تحقیقات بین رشته ای نیاز است. برای کاهش اثرات زیست محیطی و وابستگی به سوخت های فسیلی، تلاش زیادی برای جایگزینی پلیمرهای مصنوعی با مواد زیست تخریب پذیر، به ویژه آنهایی که از منابع طبیعی به دست می آیند، انجام شده است. در این راستا، بسیاری از انواع پلیمرهای طبیعی یا زیستی برای رفع نیازهای کاربردهای روزافزون توسعه یافته اند. این بیوپلیمرها در حال حاضر در مصارف غذایی مورد استفاده قرار می گیرند و به دلیل خواص منحصر به فردشان در حال گسترش در صنایع دارویی و پزشکی هستند. این بررسی بر روی کاربردهای مختلف پلیمرهای زیستی در صنایع غذایی و پزشکی تمرکز دارد و چشم انداز آینده را برای صنعت بیوپلیمر ارائه می دهد.
واژگان کلیدی: پلیمرهای زیستی | کاربردهای پزشکی و غذایی | مواد زیست تخریب پذیر | پلی ساکاریدهای میکروبی | کیتوزان
مقاله ترجمه شده
2 Efficient and sustainable closed-loop supply chain network design: A two-stage stochastic formulation with a hybrid solution methodology
طراحی شبکه زنجیره تامین حلقه بسته کارآمد و پایدار: یک فرمول تصادفی دو مرحله ای با روش راه حل ترکیبی-2021
In recent years, consumers and legislators have pushed companies to design their supply chain networks to consider environmental and social impacts as an important performance outcome. Due to the role of resource utilization as a key component of logistics network design, another primary goal of design is ensuring available scarce resources are used as efficiently as possible across all facilities. To address efficiency issues in a sustainable closed-loop supply chain network, a stochastic integrated multi-objective mixed integer nonlinear programming model is developed in this paper, in which sustainability outcomes as well as efficiency of facility resource utilization are considered in the design of a sustainable supply chain network. In doing so, efficiency is assessed using a bi-objective output-oriented data envelopment analysis model. A hybrid three-step solution methodology is presented that creates a linear form of the original mixed integer nonlinear programming problem using piecewise McCormick envelopes approach. In the second step, an aggregated single objective programming model is derived by exploiting the multi-choice goal programming. Finally, a Lagrangian relaxation algorithm is developed to effectively solve the latter stochastic single objective mixed integer linear programming problem. The application of the proposed approach is investigated with data drawn from a case study in the electronics industry. This case study illustrates how firms may balance sustainability and efficiency in the supply chain network design problem. Further, it demonstrates the integration of efficiency results in improving economic aspects of sustainability as well as social responsibility outcomes, but also highlights the trade-offs that exist between efficiency and environmental impacts.
Keywords: Closed-loop supply chain network | Sustainability | Data envelopment analysis | Stochastic programming | Multi-choice goal programming | Lagrangian relaxation
مقاله انگلیسی
3 Pricing decisions in a decentralized biofuel supply chain with RIN mechanism considering environmental impacts
تصمیمات قیمت گذاری در زنجیره تأمین سوخت زیستی غیرمتمرکز با مکانیسم RIN با در نظر گرفتن تأثیرات زیست محیطی-2021
This study develops pricing models in a decentralized biofuel supply chain focusing on both economic and environmental aspects. Environmental impacts are used as a measure to reflect the environmental objective function calculated based on ReCiPe method. A bi-level multi-objective stackelberg game model considering farmers and biorefineries as followers and the blender as leader is proposed. An ε-constraint method is utilized to convert the multi-objective model to a single-objective one. The bi-level model is then transformed to a solvable integrated model. Finally, a real case study of switchgrass bioethanol is presented to illustrate the performance of the proposed model. Results show that focusing on environmental goals results in the increasement of selling prices and profits of farmers and biorefineries and decreasment of about %7 in economic profit of the blender. Therefore, tradeoff analyses are performed for objective functions leading to 10 Pareto optimal solutions which give managerial insights to the blender. Moreover, sensitivity analyses are provided with respects to price elasticity and final fuel’s price and results show logical trends in selling prices.
Keywords: Biofuel supply chain | Pricing | Decentralized decision making | Environmental impacts | Multi-objective optimization
مقاله انگلیسی
4 Biomass supply chain coordination for remote communities: A game-theoretic modeling and analysis approach
هماهنگی زنجیره تأمین زیست توده برای جوامع از راه دور: رویکرد مدل سازی و تحلیل نظری بازی-2021
Biomass, as one of the most available renewable energies, could reduce dependency on fossil fuels and the consequent environmental impacts. There is a need for biomass supply chain management, which is managing bioenergy production from harvesting feedstock to energy conversion facilities. In case of remote communities, bioenergy adoption requires dealing with dispersed geographies of suppliers and places of consumption with small scales of energy demand. As such, coordination plays a key role in increasing the efficiency of the biomass supply chain network through bundling of demand and thus improving the economy of scale. This paper employs a game-theoretic approach to formulate a coordinated biomass supply chain with three echelons including suppliers, hubs, and energy convertors. To investigate the strategic interactions of participants, three decision making structure scenarios have been considered under Stackelberg game providing insights into the impact of power distribution, the role of side payments in enforcing the flow of decisions, and the resulting efficiency and performance improvements. In doing so, a case study bioenergy supply chain for three northern Canadian communities is explored to demonstrate the application of the proposed formulation, solution methods, and the practicality and significance of the adopted approach and outcomes for remote communities.
Keywords: Bioenergy | Supply chains | Coordination | Remote communities | Game theory | Mathematical Program with Equilibrium | Constraints (MPEC)
مقاله انگلیسی
5 Uncovering research streams on agri-food supply chain management: A bibliometric study
کشف جریانهای تحقیق در مورد مدیریت زنجیره تأمین مواد غذایی کشاورزی: یک مطالعه کتابشناختی-2021
This study carried out a bibliometric analysis to critically review the evolution of the agri-food supply chain (AFSC) research field over the period of 2008–2019. A set of 1236 articles was analyzed from the Web of Science database. Besides using different analytical scientometric tools (topic mapping, co-citation, co-authorship and overlay visualization networks), this study identified frequently-used keywords, new and hot research topics and frequently-studied supply chain management (SCM) practices. Frequently used keywords are food supply chain, food waste, sustainability, food safety, SCM, food industry, and food security. New research themes include contract, blockchain, internet of things, resilience, and short food supply chain, a topic that demands further research especially due to the international COVID-19 pandemic and the need of farmers to be closer to the consumers. Hot research topics, that is, subjects that have been studied in highly cited papers were also identified include life cycle assessment, environmental impact, packaging, water use, food waste prevention, food waste generation, blockchain and carbon footprint. Among SCM practices, this study observed that risk and sustainable SCM are frequently used keywords. Procurement and reverse logistics were observed in fewer studies. SCM, food waste, food quality, GHG emissions and risk management are sustainable SCM practices frequently observed.
Keywords: Agri-food supply chain | Bibliometric analysis | Co-authorship | Co-citation analysis | Scientometrics | Supply chain management practices
مقاله انگلیسی
6 Exploring the feasibility of introducing electric freight vehicles in the short food supply chain: A multi-stakeholder approach
بررسی امکان معرفی وسایل نقلیه باری الکتریکی در زنجیره تأمین مواد غذایی کوتاه: یک رویکرد چند ذی نفع-2021
The transition towards more sustainable approaches in the Food Supply Chain was concretely visible in the implementation of alternative models, like the Short Food Supply Chain. Some authors raise doubts on the environmental impact of this model, in particular for the externalities caused by the transport system, suggesting the adoption of Electric Freight vehicles. By adopting a multi-stakeholder approach, the objective of this study is to explore both the barriers and potentialities involved in the adoption of Electric Freight vehicles in the Short Food Supply Chain, and the existence of a shared strategy at the system level able to foster their adoption. Results suggest that, for entrepreneurs, Electric Freight vehicles appear as a viable option, although more efforts are still needed at a governmental level, through the promotion of public measures in the form of support for purchasing costs or rental rate and offering technical expertise services. In terms of infrastructures, as is clear from interviews, improving the charging infrastructure efficiency to ensure EFVs shift optimization and increasing the number of charging points are today a priority. On the whole, more collaborative methods should be inaugurated, contributing to a shared vision of urban mobility which takes into account all supply chain actors (charging point operators, automotive industry, rental car services, farmers, and local authorities) to ensure the system works in a more efficient way.
Keywords: Electric Fright Transport | Short Food Supply Chain | Last Miles food | System Innovation | Case study | Sicily
مقاله انگلیسی
7 Sustainable food profiling models to inform the development of food labels that account for nutrition and the environment: a systematic review
مدل های پروفیل مواد غذایی پایدار برای اطلاع رسانی به توسعه برچسب های غذایی که برای تغذیه و محیط زیست حساب می شود: مرور سیستماتیک-2021
Sustainable food profiling models (SFPMs) are the scientific basis for the labelling of food products according to their environmental and nutritional impact, allowing consumers to make informed choices. We identified ten SFPMs that score individual foods according to at least two environmental indicators, with the most common being greenhouse gas emissions (n=10) and water use (n=8). Six models additionally assessed the nutritional quality of foods and presented different methods to combine nutritional and environmental indicators. Key advantages of identified models include a wide range in system boundaries, reference units, approaches for defining cutoff values, design proposals for food labelling schemes, and the comprehensive geographical scope of the lifecycle inventory databases used in the development phase of the model. Key disadvantages of identified models include inconsistent methods for food classification and poor replicability due to unclear methods, unavailable code for environmental and nutritional impact calculation, and unclear cutoff values. We found that few SFPMs to date account for at least two environmental impact factors, and even fewer include nutritional values or other dimensions of sustainability. This systematic review highlights the need to use consistent components and to develop national and international reference values for the classification of sustainable food to enable standardised food labelling.
مقاله انگلیسی
8 Reimagining the milk supply chain: Reusable vessels for bulk delivery
Reimagining زنجیره تامین شیر: ظروف قابل استفاده مجدد برای تحویل به صورت عمده-2021
Milk packaging has been analysed multiple times in pursuit of finding the most appropriate vessel from an environmental point of view. Research has concentrated on commercially available containers of 0.5 –2.5 litres, usually made from High-Density Polyethylene (HDPE), Polyethylene Terephthalate (PET), paper- based cartons, or glass, with some studies considering a reuse scheme for glass bottles. Whilst applicable for household delivery, such a reuse scheme is not practical for delivery to cafés where large volumes of milk are used every day; little information is known about transportation of bulk volumes of milk in bigger vessels such as steel churns. This study compares a proposed milk supply chain using a mix of reusable stainless steel churns and reusable glass bottles with the current supply chain that uses single- use HDPE bottles, for transportation of milk to 10 cafés belonging to The University of Sheffield. A cradle- to-grave life cycle assessment (LCA) is conducted using data obtained from the university and Our Cow Molly, a local dairy farm which delivers milk to the university. Sensitivity analysis was performed around the recycling rate of plastic bottles, water consumption for churn cleaning, the reuse rate of glass bottles and churns and the source of the on-farm electricity. The study suggests that the greenhouse gas emission can be lowered by approx. 6.5 tons of CO2 equivalent annually if the reuse scheme is applied (this equates to a 65% reduction for the processes analysed). Considerable savings are also reported in cate- gories such as water consumption, fossil resources depletion and cumulative energy demand. The reuse scheme is, however, likely to induce a similar or higher mineral resource use and higher environmental damage in the marine eutrophication category due to water treatment. Production of plastic bottles in the plastic scenario and maintenance and transport on the reusable side are the main contributors to the environmental impact. Further improvements in the reuse scenario could be achieved by reducing the amount of water used for cleaning and hence the electricity demand for water heating. The reuse scheme could also benefit environmentally from using an electric refrigerated van instead of a diesel vehicle.© 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Keywords: Life cycle assessment | Milk | Reuse | Plastic | Impact assessment | Carbon footprint
مقاله انگلیسی
9 Environmental impacts of animal-based food supply chains with market characteristics
تأثیرات زیست محیطی زنجیره های تأمین مواد غذایی حیوانی با ویژگی های بازار-2021
Animal-based food supply chains lead to significant environmental impacts, which can be influenced by production systems, distribution networks and consumption patterns. To develop strategy aimed at reducing the environmental impact of animal-based food supply chains, the common environmental hotspots among different types of food, the role of transport logistics and the consequence of end market need to be better understood. Life cycle assessment was adopted to model three types of animal-based food chains (beef, butter and salmon), with specific technologies, high spatial-resolution logistics and typical consumption patterns for three markets: local, regional (intra-European) and international. The results confirmed that the farm production stage usually had the greatest environmental impact, except when air transport was used for distribution. Potentially, the role of end market also can significantly influence the environmental impacts. To understand more, three improvement options were examined in detail with regard to hotspots for climate change: novel feed ingredients (farm production stage), sustainable aviation fuel (transport and logistics stage) and reduction of wasted food (consumption and end of life stage). Significant reduction was achieved in the salmon system by sustainable aviation fuel (64%) and novel feed (15%). Minimizing food waste drove the greatest reduction in the beef supply chain (23%) and the international butter supply chain can reduce 50% of GHG mission by adopting sustainable aviation fuel. Combined interventions could reduce GHG emission of animal-based food supply chains by 15% to 82%, depending on market, transport and food waste behaviour. The results show that ecoefficiency information of animal-based foods should include the full supply chain. The effective mitigation strategy to achieve the greatest reduction should not only consider the impacts on-farm, but also detail of the downstream impacts, such as food distribution network and consumption patterns.
Keywords: Sustainability | Life cycle analysis | Animal-based food supply chain | Spatial-resolution
مقاله انگلیسی
10 A life cycle sustainability assessment of organic and conventional pork supply chains in Sweden
ارزیابی پایداری چرخه زندگی زنجیره های تامین گوشت خوک آلی و معمولی در سوئد-2021
Most existing life cycle assessment studies that have compared the sustainability of organic and conventional pork supply chains are environmental assessments. The economic and social sustainability dimensions of pork supply chains are currently under-researched. The study reported here was designed to assess the environmental, economic and social sustainability of conventional and organic pork in Sweden. Life Cycle Sustainability Assessment was undertaken using 20 indicators expressed per unit product (1000 kg pork fork weight) and per unit area (1000 ha of farmland) for the four main subsystems in pork supply chains: (1) farm and feed production, (2) slaughter, (3) wholesaling and retailing, and (4) consumption. The organic pork supply chain out-performed the conventional chain in 11 of the 20 indicators expressed per unit product and 18 of the 20 indicators expressed per unit area. It was therefore the more sustainable of the two chains in nearly all the indicators expressed per unit area. However, the organic supply chain was less sustainable in some of the indicators expressed per unit product because, more feed per kg of pork was required in organic pork production. Pig welfare improvement leads to higher production costs and environmental impacts. Assessment of all three sustainability dimensions – environmental, economic and social – helps to identify trade-offs between these three pillars of sustainability. However, the selection of indicators influences results, and obtaining environmental, economic and social data simultaneously is challenging.
Keywords: Life cycle sustainability assessment | Environmental life cycle assessment | Life cycle costing | Social life cycle assessment | Organic pork supply chain | Conventional pork supply chain
مقاله انگلیسی
rss مقالات ترجمه شده rss مقالات انگلیسی rss کتاب های انگلیسی rss مقالات آموزشی
logo-samandehi
بازدید امروز: 2130 :::::::: بازدید دیروز: 3084 :::::::: بازدید کل: 5214 :::::::: افراد آنلاین: 8