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Life Cycle - Science topic
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Questions related to Life Cycle
While there is an environmental impact during the manufacturing process, the overall life cycle emissions of electric vehicles (EVs) are lower than those of traditional vehicles. Cleaner energy sources and advances in charging infrastructure further augment the role of EVs in sustainable transportation.
Which dissertations, articles describe the selection of materials, products using quality by design and life cycle assessment? Thank you!
What is the Schistosomal Life cycle and infections with the host of Public Health Entomology?
In 'life cycle' under product stages we can give 'waste disposal' process,how does this impact the result?
And under product stage there is also option to make 'waste treatment' stage.So how to analyze this or use it in the impact assessment?
A part of my Research regarding a Middle Eastern country's development, Includes the application of Butler’s Tourism Area Life Cycle Model, My Question is, are the outcomes of the TALC module worth publication aside from the original Idea of my research?
Sources or information that can help to operate this software for practical data. For example- LCA of landfill emissions.
In your opinion, what is the essence of life in the context of the Universe, i.e. in the context of other life forms potentially occurring on many distant exoplanets relative to the known life occurring on planet Earth?
How do you think very different forms of life might exist on distant exoplanets relative to the life forms we know?
Given what we know and what we don't know about the cosmos, how different do you think life forms might be on distant exoplanets relative to the known life forms found on planet Earth?
Considering how different environmental, climatic, geological conditions, the composition of elements and inorganic and possibly also organic compounds, etc. on distant exoplanets may be under many or even all of the categories known to us, how different life forms may exist on these other planets located many millions of light years from our solar system?
According to some astrophysicists, what we do not know about the cosmos is estimated to be 96 per cent. Included in this is, for example, the essence of dark matter beyond the Universe as we know it and dark matter causing the expansion of the Universe as we know it. Life in its essence is defined in an ambiguous way. Depending on whether the definition refers only to life forms found on planet Earth or to possible other life forms that may exist on distant exoplanets, the definition of life is not necessarily the same.
Depending on what role the billions-of-years-long process of evolution of life forms on planet Earth has played in the development of life forms and the resolution of the question of the randomness of the emergence of life on different exoplanets or the intentionality of the evolutionary process aimed, for example, at the to the creation of more and more complex forms of life, forms of life increasingly adaptable to specific, changing environmental conditions of a specific exoplanet, increasingly better adapted to different environments, and to the possibly intentional or accidental bringing about of intelligent beings, including beings forming organised civilisations, changing the environment of the planet and aiming at space exploration, colonisation of other exoplanets similar to their home planet. These eventualities to be resolved that have not been resolved are many. Consequently, defining the essence of life in the context of possibly other extraterrestrial life forms on many exoplanets is not uniform. In the context of potential completely other, unknown forms of extraterrestrial life that probably occur on many distant exoplanets, life can be defined as a process of spontaneous, self-contained, independent, organised processing of matter based on energy acquired from the environment and forming, through this process, more complex structures of specific chemical compounds, elements of matter available on a specific planet and adapting to the more or less variable environment of the planet, etc. It is likely that many questions will be answered when the first evidence of the existence of other forms of extraterrestrial life occurring on many distant exoplanets emerges. There are already more than 5 500 confirmed existing exoplanets, and there is already fragmentary information about another 9 000, also suggesting their existence. This knowledge has been building up very rapidly over the past decade or so. On some of Jupiter's moons, there are deep water oceans many kilometres deep beneath the icy crust, in which specific but as yet unknown chemical compounds and perhaps certain other forms of life exist. For example, there are planets in our Solar System with largely different environments to planet Earth. For example, the atmosphere of Venus contains mainly sulphuric acid. But does this rule out the existence of some firm, less organised, procariot-type life forms. Not necessarily.
In view of the above, I address the following questions to the esteemed community of scientists and researchers:
Given what we know and what we do not know about the cosmos, how much different environmental, climatic, geological conditions, composition of elements and inorganic and possibly also organic compounds etc. on distant exoplanets can be, how much different life forms can exist on these other planets located many millions of light years from our solar system?
Given what we know and what we don't know about the cosmos, how very different life forms might exist on distant exoplanets to the known life forms found on our planet Earth?
How do you think very different life forms might exist on distant exoplanets to the life forms we know?
What do you think is the essence of life in the context of the Universe, i.e. in the context of other life forms potentially occurring on many distant exoplanets in relation to the known life occurring on planet Earth?
In your opinion, what is the essence of life in the context of the millions of planet Earth-like exoplanets found in the Universe?
What is the essence of life in the context of the Universe?
What do you think about this topic?
What is your opinion on this subject?
Please respond,
I invite you all to discuss,
Counting on your opinions, on getting to know your personal opinion, on an honest approach to the discussion of scientific issues and not the ready-made answers generated in ChatGPT, I deliberately used the phrase "in your opinion" in the question.
The above text is entirely my own work written by me on the basis of my research.
I have not used other sources or automatic text generation systems such as ChatGPT in writing this text.
Copyright by Dariusz Prokopowicz
Thank you very much,
Best regards,
Dariusz Prokopowicz
Recommend dissertations that describe material selection techniques using life cycle assessment, target product quality profile, quality by design.
What are the effects of the disruption of the carbon cycle on the environment and effect of global warming on the life cycle of organisms?
I am going to be writing a dissertation on a cost benefit analysis of using timber as a sustainable building material, and I was wondering if there was any known approaches to conducting cost benefit analysis's on construction materials. and if so what metrics would be best to measure e.g. cost, material characteristic's compared to traditional counter parts, life cycle, environmental impact, social and political impacts?
This software is used in the field of life cycle assessment.
Is there an open-source software or apps supporting Life Cycle Inventory of emissions from agricultural activities?
I want to study the life cycle of insect, the larva of this insect lives inside the gall which is formed in the stem of host plant. I presume the presence the larva leads to the formation of a gall. Can someone suggest me a standard protocol through which I can study the life cycle of this insect larva.
Thank you in advance
Dr Bisu Singh
I have worked on soil stabilization using eggshell powder in fine grained soil for subgrade purpose. But the research lacks a life cycle assessment of eggshell powder. Please help me to find out the eggshell life cycle assessment using GaBi software.
Dear researchers,
I am currently very interested in performing Life Cycle Assesment analyses, and start learning about this subject. But I need some orientation and to learn the basics first.
Would you recommend me a software to start learning and some guides about this?
Thank you in advance!
Kind regards to you all!
Hi All,
I'm looking for the possible methods in measuring the response of chytrid fungus cells to environmental stressors in separate generations. As Lee Berger (2005) claimed, chytrid needs 4-5 days at 22 C to complete its life cycle. But it seems that we have cells in various stages and it is difficult to have a uniform population of fungi cells in a particular generations. So, my questions is that how possible it is to conduct a multigenerational study (for instance 4 generations) in the culture (in vitro) to see the potential impacts of stressors through generations? measurements in separate generations are important in my tests.
Hope that does make sense, otherwise, ask me.
Thanks.
Milad
In fatigue analysis, satisfying 4 times (scatter factor 4) of the required life cycles has the 99% of the material reliability (probability) as far as I know.
For instance, if the requirement is 100,000 cycles and the analysis shows the life is more than 400,000 cycles, the material is expected to meet the requirement (100,000 cycles) with 99% reliability.
But, in my recent project, it required me to use scatter factor 4 and perform 4 life fatigue test.
In other words, if the requirement is 100,000 cycles as the above, the analysis should meet 400,000 cycles and its fatigue test should also succeed 400,000 cycles.
Here, I have a conflict. The analysis with scatter factor 4 can guarantee 100,000 cycles with 99% reliability. But after that amount of cycles, it cannot anymore. So, if the test fails between 2 and 4 life, there may be a material probability issue.
In order to guarantee the 4 life test, do I have to use scatter factor 16? It sounds too conservative. Its requirement cycles are 100,000 but the fatigue test should perform 4 lives.
What should I do to guarantee the fatigue requirement as performing the fatigue analysis?
Dear All,
I would appreciate if you could give an advice what is the best approach how to model phosphorus emissions to water in an Life Cycle Inventory, if only the amount of applied fertilizer is known?
Thank you!
Will the power/current fluctuation with a high ramp rate but a small amplitude poses a significant impact on battery lifetime?
More specifically, are the answers different under the following three cases:
a) battery power/current changing from one level to another level (both far below the rated one) within a very short time period (e.g. 50ms)?
b) battery power/current frequently fluctuating around a constant level (far below the rated one) without reversing its direction?
c) battery power/current frequently fluctuating around zero, i.e., repeatedly charging/discharging with small cycles?
I got confused, as it seems that previous papers have covered all the three cases in battery lifetime extension schemes, while the battery manufacturers only pay attention to case c). It would be better to share the relevant references.
We are in the process of assessing the LIFE CYCLE of Ginger and Pomogranet production. In this regard, we are in search of free and easy-to-use LCA software.
Hello, I am currently making a life cycle assessment which includes bio-based activated carbon.
I was wondering if such material could be used in pyrolysis, and what would its advantages be over biochar or even coal.
Regards
Hello everyone,
I am trying to model the process stage (Gate to Gate) of FDM on SimaPro. I understand that I need to decide upon my inputs and outputs as well as system boundary before doing that. I am trying to do this properly and was wondering if anyone can advise more on this methodology (i.e., how to decide upon the values for the raw material input and electricity?, etc...).
Any response is very much appreciated. Thank you.
Useful Article: Methodology for systematic analysis and improvement of manufacturing unit process life-cycle inventory (UPLCI) —CO2PE! initiative (cooperative effort on process emissions in manufacturing). Part 1: Methodology description.
Is there a life cycle assessment to estimate the emissions of bitcoin life and its impact on climate change?
Currently I am researching the possibility's of implementing a Feedback loop based on a Lessons Learned database to Close the Loop in a project organization that focusses on Marine Contracting.
I'm looking for articles, best practices, best in class methods for implementing and maintaining these kinds of systems/tools.
Dear all,
What are the best techquines/procedures to integrate life cycle inventories (LCI) and life cycle impact assessments (LCIA) into energy system optimisation models (ESOM) (energy-focused IAM) to determine the potential impacts of industrial and urban decarbonisation scenarios and policies.
The emission factors used in energy models (e.g. LEAP) are mostly related to direct energy use (e.g. fuel combustion), and industrial process emissions are not always considered, which may lead to underestimated impacts.
Meanwhile, although life cycle assessment (LCA) provides relevant information about the total life cycle impacts of industrial processes, LCA methods not always consider future technology improvements and changes in economic and energy structures as they are usually focused on background data.
I would appreciate if you could send me some suggestions (links, papers, projetcs, comments) about best practices to integrate LCIAs into prospective energy models.
Thank you in advance for your attention!
All the best,
Joan Manuel F. Mendoza
Also, does anyone have a building SimaPro tutorial; PDF or videos?
Hello,
I'm currently making a life cycle assessment for a liquid hydrogen tank.
One of the materials considered is a carbon fibre reinforced PEEK.
However, there is not a lot of data about the environmental impact of the polymer. Indeed, the only article I have found is the one from Daniel GARRAIN (which served as a reference for the Idemat database).
(PDF) The environmental behaviour of PEEK as an innovative material in a new portable hydrogen fuel cell (researchgate.net)
If any of you have data about it, I would be interested in exchanging with you.
Regards,
CO2 is used as raw material for chemical syntheses. It paves the opportunity to mitigate the greenhouse gas (GHG) emissions. However, it is not mathematically or logically proved yet that carbon capture benefits the environment in terms of resource efficiency. In my opinion, I believe that the life cycle assesment (LCA) would be the most suitable tool to quantify the resource-based benefits due to carbon based methane (CH4) production and to prove the resource efficacy of carbon capture.
I would like the researchers who read this discussion to provide their own ideas on whether LCA is the most suitable tool to identify the carbon capture resource efficacy or are there any methods better than LCA that can be applied on CO2 based methane production.
Hello RG members,
Our team is engaged in preparing a comprehensive LCA tool that is freely available for any kind of users to facilitate the global warming potential calculation due to the building structures, pavement structures and hydraulic structures. In reference to this objective, I would like to get opinions from you on what type defects/failures/issues that you encounter with present life cycle assesment softwares such as Oneclick LCA, SimaPro and OpenLCA etc.
Your answers would help our team to develop a well structured LCA tool. Thank you
Dear colleagues,
We ask your kind support to our research on the topic of: Life Cycle Sustainability Impact Categories for Li-Ion Batteries.
This survey is targeted to experts in sustainability assessment, LCA, waste management and similar areas.
Please fill in our survey (expected duration of aprox. 12 minutes) in the link: https://forms.gle/ae3BKh5xYM2ZMywQ8
Your contribution is essential to this study!
Thanks in advance.
A research team from UNESP and CTI, Brazil.
#unesp #batteries #sustainability #lifecycle #ewaste
Hello everyone,
I have been asked to develop the state of the art related to the Digital Twin and I have tried to read many of the articles dealing with the topic that are present in the literature, paying special attention to the conceptual ones and reviews. However, the more I read, far from converging towards a unified vision, the more I got the impression that each author develops his own ideas and theories about the Digital Twin, largely depending on the application sector and the objectives to be achieved. So much so, that this concept is turning out to be a nightmare for me, I could not imagine such heterogeneity in terms of perspectives (just my actual perception). Here is a list of some topics that I find difficult to understand:
- Is it possible to represent an intangible entity with the Digital Twin? Many authors argue so and recognize both tangible and intangible entities for developing Digial Twins. However, even nowadays, many publications continue giving Digital Twin definitions or descriptions where only physical entities are considered. Moreover, when talking about the flow of communications between the real and virtual worlds, the entity of the real world is commonly supposed physical. When tackling other aspects such as the lifecycle, the real entity is normally assumed to be physical and related to a product in the manufacturing domain. There is a trick to this question, because if the Digital Twin is supposed to track the entire lifecycle of the represented real entity and a Digital Twin only comes into existence when the real entity has already been physically built (as-built), what about early lifecycle phases such as design?
- Generally, from what I have read, aggregation and composition of Digital Twins is allowed. Just as a real-world entity may itself be composed of several elements (each of which may have its own Digital Twin), a Digital Twin may itself be composed of several Digital Twins. Is a 1:1 (bijective) relationship between the real-world entity and its Digital Twin always assumed? In my opinion it should be like this...
- Does the development of a Digital Twin imply the need for bidirectional communication between the represented entity and the Digital Twin itself? Normally a one-way communication from the real entity to the virtual entity is assumed (in that direction). In my opinion, this link is more than enough to enable the convergence between both worlds and the synchronization of the Digital Twin, since thanks to it the virtual entity will always have the possibility to reflect the real one (in real time or not). However, the existence of a link in the opposite direction (from the virtual entity to the real one) is not always considered. It should be noted that it brings great value, since it enables the Digital Twin to control or act on the represented real entity. This increases its usability and the number of possible applications. However, is it an intrinsic characteristic of the Digital Twin? It should be noted that in some cases it may be difficult to achieve and may lead to different interpretations. Just consider the intangible entities.... It seems complicated to establish an automatic bidirectional flow of communications. To give an example, one can think of production processes. They are real concepts but intangible as such, although it is true that if we think about the characteristic of composition/aggregation of digital twins, a productive process, despite being intangible, can be in turn composed of digital sub-twins of real physical entities such as production cells, in which case the aforementioned bidirectional flow would be feasible... We are almost getting into very abstract and philosophical issues. Another example where I consider bidirectional flow to be complicated is e-health, a field where there is already research on the Digital Twin. For example, it would be feasible to develop a Digital Twin of a diabetic person to monitor his or her blood glucose level. Based on the data collected, the Digital Twin could provide, for example, nutritional recommendations through an application to improve their condition, being the person's own responsibility to read and implement them. Would this be considered bidirectional communication? It affects the represented entity, but indirectly... For now I do not see very viable, at least in this sector, that the Digital Twin gets to control organs through actuators or other devices implanted in the human being's own body where the aforementioned bidirectional communication has a place.
- Is the concept of lifecycle tracking an essential characteristic of the Digital Twin? In my opinion there are domains where Digital Twins have actually been developed where this view does not fit. Additionally, there are authors that do not consider the need of the Digital Twin to track the whole lifecycle, but the necessary subset of it.
- Many definitions or descriptions of the Digital Twin pose it as a whole by which it is possible to have a real-time representation of a real-world entity and its traceability throughout its lifecycle. Only the term Digital Twin is used. However, there are other approaches, whereby, based on the stage of the life cycle and the level of realization of the real entity to be represented, other concepts such as the Digital Model or Digital Thread are introduced. To cite a few examples, Grieves proposes the concept of Digital Twin Prototype and Digital Twin Instance (together with Digital Twin Aggregate and also Digital Twin Environment). Another proposal comes from Madni, that proposed Pre-Digital Twin and Digital Twin (together with Adaptative Digital Twin and Intelligent Digital Twin). Hribernik introduces the concept of Product Avatar and Parent Avatar. In a similar approach, Eigner present and distinguish the concept of Digital Model, Digital Thread and Digital Twin. Stark also talks about the Digital Prototype / Digital Master, Digital Shadow and Digital Twin... Among all these, is there one commonly known as the "right" approach? Or all of them are just different visions from different authors?
- So far and based on what I have read, I have been understanding the Digital Thread as the Digital Model proposed by Eigner or the Digital Master / Prototype proposed by Stark. I get the impression that the same thing happens in other publications, even more so when only the concepts of Digital Twin and Digital Thread are elaborated. In the case of Eigner I think he focuses more on the links itself when referring to the Digital Thread. Is this possible? Do you have the same impression? It may also be that I have misunderstood everything up to now (I hope not to be the case)…
- In the following I expose a use case related to a van manufacturing company. I am really interested in seeing how would you understand and name each of the aspects I mention below. The paragraphs that present the situation are written in italics, and my thoughts in plain text without any formatting:
- The introduction of a new van model usually involves, among other things, arduous exterior, interior and component design tasks. For this purpose, 3D modeling tools are commonly used, whose resulting models prove to be very useful for subsequent prototyping, testing and design refinement steps. All these resulting assets launch the Digital Thread of the new van to be manufactured, framed within the design stage. From this moment, in addition to the vehicle manufacturing company, it is common for all those component or service suppliers to participate, also gaining access to the pertinent models. Would you refer to this as the Digital Model/Master of the generic van model to be produced? As you can see I am saying that at this point the Digital Thread is being launched, thus understanding it a the Digital Thread… I suppose that at this initial design stage, in addition to the different designs and general product specifications that give rise to the generic van and all its possible services (variant free at this point), it is also possible to run different simulations to check the correction of the product and the design decisions made. Since there is not yet a physical van or a physical prototype of the van, these types of product instances should be referred to as Digital Twins? Would it make sense to build a physical prototype at this stage? Does it makes sense? I suppose that it also depends on the domain and use-cases…
- With the final general design checked and validated, the production phase of the van begins, where many of the previously created and properly updated models are used to drive different manufacturing processes. It is at this point where, depending on the final customer and unexpected orders, some reengineering on the general models of the new van might be necessary. In fact, it is not the same a common van, a camper van, an armored cash-in-transit van or a van for transporting people with reduced mobility. To make the changes, the general vehicle models are inherited and the appropriate redesigns and validations are carried out, with the active participation of all the involved suppliers. In case such vehicles are to be mass-produced, a digital subthread or the inclusion of vehicle variants on the original digital thread could even be considered. Here different variants of vans are presented that come from the same generic van model… They share common attributes but an initial customization stage starts, although more can be expected in advance… Say, for example, that from the generic van model a passenger and a box/goods vans can be derivated, both of which admit much more customization based on the final customer requirements and orders. How to call to this subgeneral van models? Digital Sub-Model/Master? Digital Sub-Thread? You wouldn't call them Digital Twins yet, would you? Nevertheless, at this phase I see more feasible the fact of building physical prototypes in case they are needed... Again, here different design decisions and simulations could be carried out with the developed models (and in conjunction with the stakeholders) to check the vans to be subsequently produced.
- In any of the cases, whenever the changes or information to be introduced on the general models are specific to a particular unit to be produced, the Digital Twin associated to that particular van arises. In its models, in addition to including specific information on its design, the data and peculiarities associated with its production are also recorded. During the operation phase, these Digital Twin models are updated in real time based on the data coming from the physical van, so that they constantly reflect its status. New models for diagnostic and prognostic purposes could also be generated by using such information. I think most of you will more or less agree with this. However, I believe that with this I am violating the multiple definitions of the Digital Twin that indicate that it enables traceability throughout the entire product lifecycle, as it seems to only intervene from the manufacturing phase onwards and not in the design phase. Maybe, once a specific van (particular product without the variance inherent to the general design) is to be produced further final simulations, checks and subtle redesigns could be performed with the derived general models that would still be considered as part of the design. Another question related to the information stored in the Digital Twin that comes to me has to do with the following. The design aspects (or configuration items) that can be shared by more than one van and that are not particular of the specific van to be produced have to be part of the Digital Twin itself, or might be stored in their respective Digital Model/Master or Sub-Model/Master knowing that thanks to the Digital Thread that information would be reachable from Digital Twin (or that the Digital Twin could be expanded or enriched with that information)? Note that here I am adopting the view of Eiger and Stark, as I am considering the existence of a Digital Model / Master and interpreting the Digital Thread as the links itself... Remember that in the first question I was assuming the Diigtal Thread to have the role of the Digital Model / Master...
I am so sorry for the length of all this questions but I have tried to explain them well and in a clear manner. I would be very grateful if you could give me your views on any of these points.
Thank you very much in advance.
For instance, rebound effect is one type of indirect, ecological and detrimental effect illustrating "how an increase in efficiency can generate a higher than expected use of resources" (Figge & Thorpe, 2019)
We qualify as indirect any effect caused by the action and later in time or farther removed in distance, but still reasonably foreseeable by any means (tools) used by the originator (NEPA, 2017).
- Do you have knowledge of other similar mecanics? In other words, does the litterature define other mecanics of indirect, ecological and detrimental effects?
For instance, carbon leakage describes "a shift of CO2 emissions from a region with emission constraints to an unregulated area" (Naegele & Zaklan, 2019). On antoher scale, burden shifting occurs when considering only parts of the whole life cycle of a product.
- What makes carbon leakage or life-cycle burden shifting any different?
For example, one of the most related papers has been brought at below:
Wu, Jie, and Michael D. Lepech. "Incorporating multi-physics deterioration analysis in building information modeling for life-cycle management of durability performance." Automation in Construction 110 (2020): 103004.
Dear colleagues,
We ask your kind support to our research on the topic of: Life Cycle Sustainability Impact Categories for Li-Ion Batteries.
This survey is targeted to experts in sustainability assessment, LCA, waste management and similar areas.
Please fill in our survey (expected duration of aprox. 12 minutes) in the link: https://forms.gle/ae3BKh5xYM2ZMywQ8
Your contribution is essential to this study!
Thanks in advance.
A research team from UNESP and CTI, Brazil.
#unesp #batteries #sustainability #lifecycle #ewaste
We are at an era where the technical assessment of processes is digitized. The question that arises is whether in life cycle analysis there are some good practices for digitizing the way in which we assess the environmental indicators through LCA. Excluding the case of buildings, where commercial software already exists (Tally, OneClickLCA) for automatic extraction of life cycle analysis indicators from digital BIM models, are there other cases where the environmental assessment of processes with LCA is done in an automated and digitized way?
i am working on calculating the carbon footprint of a product, and want to know is there a Life cycle assessment exemple where i can acess detailed information of the Input and Outputs of the inventory ?
Hello everyone !
I'm currently using a Life cycle assessment approach on my case study using OpenLca software,
and I need to know how to establish and model the construction/operation phases of a WWTP( my case is : lagoon wetland wastewater plant), in OpenLCA software ?and then compare both operation phases using an impact method.
Thank you
I am an independent researcher . During the time at University I was able to use Sima-Pro to carry out LCA related assignments. But I would like to know since I do not have the access to Sima-Pro software anymore , any alternative software I could potential use except the OpenLCA software?
Any answers would be highly appreciated.
Thank you
Hello,
I am wondering about the possibility of exporting data from SimaPro to GaBi and back again. Does the database used in SimaPro have to be the same as what's available in GaBi??
Thanks in advance!
I have been receiving some feedback from reviewers, specially from those that usually do not work with Life Cycle Assessment (LCA) studies, asking that I should use replicates or statistical analysis other than descriptive statistics in LCA studies. What is the best approach to address their feedback since "replicates" are not listed in any ISO recommendation?
When performing Life Cycle Assessment (LCA) studies, the functional unit provides a reference to which the system's inputs and outputs can be related and a logical basis for comparing the sustainability performance of different products and/or processes. The functional unit is necessary to ensure comparability of LCA results, which is particularly critical when different systems are being assessed, ensuring that such comparisons are made on a common basis. However, the lack of standardization regarding functional units makes LCA studies difficult to compare. Let's say we are performing a systematic review where we need to compare results from different studies (quantitative and/or qualitative data); what would be the best approach to compare results from LCA studies that used different functional units?
I want to optimize the usable SOC range of hybrid vehicle in order to improve fuel economy. So. how to choose maximum and minimum SOC values for running an optimization algorithm?
I would like to include LCA as additional tool for my research and papers. Looking for someone dealing with polymers and composites to cooperate and learn a bit.
MFCA has been dominantly used for the manufacturing sector. But will it generate useful results when applied to the buildings sectors, considering its entire life-cycle, or is LCA and LCC are better suited. Any suggested papers on the same would also be helpful.
I want to study LCA for conventional farming vs organic farming
Anyone can suggest to me, software that helps for techno-economic analysis and life cycle assessment for energy generation from wet-organic waste using thermal treatment. Thanks.
Basically, the aging test methods are carried out by accelerating tests (cycling the exposure of UV light, physical mechanics, like fatigue or crack propagation, water, freeze-thaw, salt spray, etc). I really intrigue is there an official full description or standard method for completely determining the life-cycle of the composite materials for building structure. How correlations test methods' to the time? It would be perfect to give me feedback and ask me closer about my issues by direct message!
Hello'
Does anyone have any information about reproduction, life cycle, and laboratory culture of Spirobranchus aloni ?
Thanks.
I know different people will have different answers depending on their backgrounds.
Think in terms of Chemicals for a biorefinery
Initial value
Agriculture
Carbon
Transportation
Integration of the mass culture into the economy
Bioeconomy
life cycle assessments
etc...
Dear all;
I am looking forward to your suggestion regarding the life cycle of a Forward osmosis (FO) membrane.
I'm a university student and I'm writing a paper about Porto. I have to follow some topics like life cycle of Porto; What kind of tourists visit Porto (gender, age, nationality) and their motivation to go there; also any information about thegastronomic tourism in Porto.
Thank you!
I need to construct nematode infection in roots.
What your opinion on the current state of the art in life cycle assessment of chemical substances?
Which are the documents needed in a construction project which follows the ISO19650? To list a few:
OIR
EIR
AIR
High level Responsbility matrix
Tender invitation
Pre BEP
TIDP
MIDP
Post BEP
Mobilization Plan
Risk register
Please let me know of any other documents
Kind regards
Dear network,
I am looking for the LCA or LCI or at least the energy balances of the non woven fabrics process for my master project, in specific for natural fibers, yet I have found difficulties in finding the proper information. If you have by any chance information or papers containing this kind of info, please let me know,
Thanks in advance
The eutrophication of groundwater by nitrate leaching is major environmental problem in Germany, especially in areas with intensive agriculture and high N-fertilizer inputs. In addition there are different regional aspects (like soil properties) which make certain areas more vulnerable than others.
I am currently working in a project where we want to improve the sustainability of crop production systems in Germany. Here, we want to assess the impact of crop production on various environmental areas such as GWP, Acidification and Eutrophication, using LCA’s.
We are working with Gabi-Software, which is why we are limited in the choice of LCIA-methods.
I had a closer look on the methods CML 2001, Environmental Footprint 3.0 and ReCiPe 2016 and their underlying models.
I understand the differences between the models. But if we want to assess the impact of Nitrate leaching on groundwater via LCA, it seems only CML is the appropriate method because it considers both - N and P emissions. Also, the characterization factor in Gabi-Software is an average European factor (For ReCiPe it’s a global, for EF it’s European too).
On the other hand, the CML-method is often described as a simple method, since it is a stoichiometric calculation of the contribution of N- and P-emissions to algae growth (Redford-equation). By this, it does not consider any environmental fate.
ReCiPe 2016 or EF 3.0 however differentiate between marine and freshwater eutrophication, in which only N- or P-emissions are considered. So, if I want to assess the impact of N-emissions to groundwater with ReCiPe, I have to use marine eutrophication. But would my results be valid for groundwater at all? The fate factor calculates up to the marine end compartment, and I expect large losses of emissions on the “path” between groundwater and seawater.
I find it extremely difficult to decide, as it is so important to estimate the effects as accurately as possible. Has anyone carried out a similar study on this subject and / or can give me a recommendation?
I would be very grateful!
Best regards and stay safe,
Pia
I'd like to calculate the value of trees based on Net Present Value (NPV) in which the value of oxygen supplied by trees in their whole life cycle is also included. Can the learned audience share the easiest method for the same?
To be specific, can you suggest a technological tool (software) that I may use to conduct life cycle analysis of bamboo products?
Hi all,
I am now working in the evaluation of an innovative renewable energy generation system. For the evaluation of economic aspects I was planning to use the LCOE, levelized cost of energy, and I have some doubts/questions about it.
In particular, I am not sure how I can incorporate in the usual definition, the one that can be found in Wikipedia (https://en.wikipedia.org/wiki/Levelized_cost_of_energy) and normally found in article, terms corresponding to
- Selling excess that cannot used or stored in site. I believe I can add a negative term, Si, to the costs sum, but not sure.
- Residual value at the end of the life cycle. I think I can add a negative term, RV/(1+r)^n, where r is the interest rate and n the useful life time to the numerator. This term arises from the fact that at the end of the life time some materials, in particular, metals, have a value for recycling.
- Disposal cost, I believe I can add a term DC/(1+r)^n, as in certain systems it is necessary to spend some money to be able to properly dispose some of system.
I have some doubts that I am thinking right or not. Thus, can someone give their opinion or reference that help me on issues I am having.
Regards,
António Martins
Dear all,
I have been looking for an LCA (Life Cycle Analysis) for the thermoelectric material B2Te3. However, I can't find anything on the internet. Can anyone help me with this? Thank you very much!
Hi all,
I am doing a Life Cycle Study of an Anthraquinone flow battery, and I am having difficulties in finding good references for the production of ferrocyanide. Does anyone have good references for that?
Thanks in advance. Regards,
António Martins
Smartbox or energy is an important item of a solar power system. I would be grateful if someone can help me/suggest a literature source to find life cycle inventory of the smart box. Thanks.
Hello,
I have a set of anatomical variables for around 30 spp (same genus). Along with using these variables in species grouping, I also want to analyze the effect of some other variables (like, habitat type and life cycle pattern) in shaping them i.e. response of the anatomical traits to habitat variation and lifecycle pattern.
I have matrixed all the variables in binary code (0/1) for each species and performed PCA in R, treating all variables as same (same matrix).
So, the main question was that: can we simply depend on the angle range between the "anatomical" vs "ecological" variables in a "variables vs. species PCA biplot" to determine their correlation?
Also, need your suggestions regarding:
1. What kind of analyses can best fit this form of data?
2. Shall I log-transform the data before analyses?
3. Is that a correct form of data-treatment that I have binary-coded the environmental and life cycle variables, or I shall treat them as categorical?
4. Is it necessary to assess the significance of the analysis results statistically (eg., ANOVA...)?
Please note that the ecological variables are of different species, not of different populations of the same species.
I highly appreciate your kind help!
Your's,
Dastan
Polyurethane insulating foam plays key role in energy-efficient cooling systems such as storage in cold stores, local storage in supermarkets, and domestic refrigerators. In LCA assessment of refrigerators/cold rooms, high priority should be given to impacts from insulation foam.
I would appreciate it very much if anyone shares LCI of end of life recycling/treatment of polyurethane sheet
Do the shortening of life cycles of technical products, electronics, household appliances, IT equipment, etc. used by producers is a solution to the potential problem of overproduction?
Please reply
Best wishes
I am looking for a method blank which I can use in the heavy metals, terpene, solvents, cannabinoid, pesticide, and microbial analyses I do in my analytical lab on cannabis samples. I have tried Oven drying hemp to remove the residual solvents and terpenes because these are more volatile compounds. It worked for the terpenes, they were all burned off, but it did not work for the residual solvents analysis due to the inherent solvents that plants produce or uptake in their natural life cycle.
For heavy metals the samples failed due to the fact that almost all plants will have some amount of heavy metals in them from the soil they are in. Small amounts of cannabinoids were also found in the hemp so it did not work for potency testing.
Does anyone have any ideas for a suitable plant material that is similar to cannabis that could possibly be used as an "analyte-free" matrix for method blank purposes? I have heard of other labs using vegetable or hemp oils but I feel the matrix is not similar enough to cannabis flower to use in this instance.
Methods of LCIAs are a fast developing field of research, not less than LCSA and LCA itself. At the moment i am developing a set of indicators and methods of impact assessment for an LCSA of regional bioeconomy in context of the SDGs. Therefore i would be very interested and grateful for your research, knowledge and/or ideas regarding LCIAs for LCSA.
Solar Direct Current (DC) Microgrid for remote areas is relatively an emerging area and there have been installations in different parts of the world. Battery is the obvious storage device for such applications. Any empirical results as to which one among Lead Acid/Li-Ion is effective in a comprehensive perspective say on life-cycle basis?
We are currently working on an LCA paper regarding Non-Recyclable Plastics-to-Energy Processes. We need an LCA expert to prepare an inventory and analyze the data by SimaPro and give us the report. Do you know of any experts or can anyone help, there will be an awarded sum.
Protein is one of the macro nutrient required by chicken. to satisfy the requirement of the protein source different feed ingredients are used across the globe. I am interested to know how to asses the life cycle of this macro nutrient.
The condition for the organization to survive and experience a long life cycle is the speed of adaptation to new normal.
S-curve management is attached. Where are you now?
