نتایج جستجو برای: 1942 kg nox eq and 72304 mj using life cycle assessment method

تعداد نتایج: 17707887  

Journal: :Sustainability 2021

Due to their properties, silver nanoparticles (AgNPs) are widely used in consumer products. The widespread use of these products leads the release such into environment, during manufacturing, use, and disposal stages. Currently there is a high margin uncertainty about impacts nano on environment human health. Therefore, different approaches including life cycle assessment (LCA) being evaluate e...

Journal: :ecopersia 2014
ali daneshi abbas esmaili sari mohammad daneshi henrikke baumann

the objectives for this study were first to understand and estimate energy consumption in each stage of production and processing of milk using regional data and second, suggesting improvement opportunities. a cradle to gate assessment of market milk was performed by separating the system into three stages: agronomy, animal farm and processing plant. data were collected from multiple sources e....

Journal: :مهندسی عمران فردوسی 0
محمدرضا صبور مینا یکه لر مرتضی نیکروان

concrete is one of the most utilized construction materials in the world. nowadays, nano silicate usage due to its special property attracted considerable attention. on this basis, studying its environmental functions is an essential issue. accordingly, the behavior of normal concrete and the one with nano silicate were compared via taking advantage of life cycle assessment (lca) method in this...

Journal: :IOP conference series 2023

Abstract Plastic waste management in Indonesia is relatively poorly implemented due to the limited number of recyclers. One most abundant plastic wastes multilayer metallized packaging (MLP). This study was conducted analyze environmental impacts MLP and bag conversion paving blocks (PVB) with a life cycle assessment approach aimed determine whether such process brings positive or negative surr...

Journal: :مهندسی بیوسیستم ایران 0
محمدعلی رجایی فر کارشناس ارشد، گروه مهندسی مکانیک ماشین های کشاورزی، دانشگاه تهران، ایران اسداله اکرم دانشیار مهندسی مکانیک ماشین های کشاورزی، دانشگاه تهران، ایران برات قبادیان دانشیار مهندسی مکانیک ماشین های کشاورزی دانشگاه تربیت مدرس، ایران شاهین رفیعی استاد مهندسی مکانیک ماشین های کشاورزی دانشگاه تهران، ایران رضا عبدی دانشیار، گروه مهندسی بیوسیستم، دانشکدۀ کشاورزی، دانشگاه تبریز، ایران

the aims of this study were to assess the energy and economic flows of biodiesel production from olive pomace oil using transesterification method with ultrasound waves. for this purpose biodiesel production from this feedstock were examined through a life-cycle process with considering five main stages of agricultural production, transportation, olive oil extraction, pomace oil extraction and ...

Journal: :Sustainability 2023

This paper constructed a carbon footprint calculation model and analyzed the characteristics impact mechanism of forestry enterprises in Greater Khinggan Range, northeast China, based on survey statistical data during 2017–2021. The process-based life cycle assessment (LCA) was used to calculate total intensity; then, panel combined with ridge regression explore impacts different factors enterp...

Journal: :Sustainability 2021

Humans are significantly perturbing the global nitrogen cycle, leading to excess reactive in environment. Nitrogen oxides as a key species mainly controlled by selective non-catalytic reduction and catalytic reduction. Converting ammonia, defined ReNOx, emerges an alternative method under disparate design concept. However, little is known about its overall environmental performance. In this stu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده ادبیات و زبانهای خارجی 1392

abstract this study aimed at investigating the possible relationship between self-assessment in writing and self-regulation of iranian efl learners. the main purpose of the study was not only to report and inform about this relationship, but also to investigate and find practical outcomes of the incorporation of self-assessment in writing, such as improving writing skill. the research was carr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1393

according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ولی عصر (عج) - رفسنجان - دانشکده ادبیات و علوم انسانی 1393

the present study investigated construct equivalence of multiple choice (mc) and constructed response (cr) item types across stem and content equivalent mc and cr items (item type ‘a’), non-stem-equivalent but content equivalent mc and cr items (item type ‘b’), and non-stem and non-content equivalent mc and cr items (item type ‘c’). one hundred seventy english-major undergraduates completed mc ...

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