Questions related to Circularity
Have you bought groceries or food lately? Have you noticed that the cost of items that form part of the production cost of the product or service you are buying, like bags or food containers that once were free pollution, are now being charge extra to consumers when buying passing to them the apparent environmental responsibility of dealing with them, but the extra money now you are required to pay goes directly to the company profits, not to any private nor government nor even to the same company recycling program as perhaps there is none. And governments seem to be okay with this new practice which is now spreading from major corporations to small businesses leaving consumers with no protection.
In a sense, dwarf green markets provide a cover for companies to pass their cost of production plus the “green grab” to consumers usually without having to disclose in advertising what they are doing so, a kind of deceiving as if those items cost more to companies now increasing their production costs that way, then they should increase the prices of their products or services instead, giving that way the option to consumers to buy at a higher price or not.
So consumers pay more, but their extra pay has not clear environmental benefits from consuming at a higher price, which raises the question, under dwarf green markets are consumers currently being scammed by the business community?
What do you think? Please detail your own view.
I am trying to design phase shifter , but I am not able to figure out the impedance required to each arc of microstrip such that all the ports are matched at 50 ohms
Can anyone help me out with the impedance calculations?
I am attaching the reference image for understanding .
I tried to make riboseq library in my host strain B.subtilis which overexpress protease. The cells were grew in fermentor with soy media. I collected cells by flash frozen it in liquid nitrogen. But I always faced issue about the polysome degradation before MNase treatment. I tried to add protease inhibitor and RNAse inhibitor in the cells lysates but still got polysome degraded. Any suggestion?
Frozen cells were pulverized in freezer mill grinder in high magnesium buffer (20 mM Tris pH 8, 0.15 M MgCl2, 0.1 M NH4Cl, 5 mM CaCl2, 0.4% Triton X-100, 0.1% NP-40). The pulverized cells were thawed and the soluble cytoplasmic fraction was collected by centrifugation of insoluble material. Then the contents were layered on sucrose cushion (1.1 M Sucrose, 20 mM Tris pH 8, 500 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA pH 8) and the ribosome was pelleted in ultracentrifuge at 60000 rpm, 4 °C 1.5 hour. The ribosome was resuspended in the buffer containing 20 mM Tris pH 8, 15 mM MgCl2, 100 mM NH4Cl and 5 mM CaCl2 and treated with micrococcal nuclease (MNase, Sigma) to degrade DNA and to reduce polysomes to monosomes. Monosomes were further isolated by S400 column. mRNA was extracted from the monosome fraction by treatment with acid phenol and chloroform extraction, and isopropanol precipitation. Then polyacrylamide gel purification was performed for size selection of 15nt-45nt RNA fragments. The RNA molecules were further dephosphorylated by treatment with T4 polynucleotide kinase (New England Biolabs). The dephosphorylated RNA fragments were ligated to a DNA linker (/5rApp/CTGTAGGCACCATCAAT/3ddC/) using T4 RNA ligase kit (New England Biolabs). rRNA from all samples was depleted followed by Ribo-Zero kit instructions (Ribo-Zero Plus rRNA Depletion Kit, Illumina). Then the RNA samples were reverse transcribed using SuperScript III (Life Technologies), and the primer RT primer (/5Phos/AGATCGGAAGAGCGTCGTGTAGGGAAAGAGTGTAGATCTCGGTGGTCGC/iSp18/CACTCA/iSp18/TTCAGACGTGTGCTCTTCCGATCTATTGATGGTGCCTACAG). The reverse transcription products were circularized by CircLigase ssDNA ligase (Epicentre). PCR amplification was performed using the circularized cDNA as a template and Ribo-F (AATGATACGGCGACCACCGAGATCTACAC) and IIlumina index primer (CAAGCAGAAGACGGCATACGAGATXXXXXXGTGACTGGAGTTCAGACGTGTGCTCTTCCG), and Phusion High-Fidelity DNA Polymerase (New England Biolabs). The PCR-amplified DNA libraries were deep sequenced by Illumina HiSeq.
I wonder how Circular Economy would be from the perspective of ordinary consumers, whether we could have circular consumers, or should this idea be anecdotic. Because Circular Economy seems pretty much perfect for humans. What do you think?
Here, I am analysing Thin walled circular tube in Abaqus Software under Axial loading and I have only Two terms.
And I am not able to solve Mean Crushing Acceleration and Peak Crushing Acceleration.
Our myotubes are probably contaminated with other types of cells, these cells seem to be different from myoblasts, because they have different morphology, they are circular.
Can you help us to identify these cells?
I am doing quantitative research into motivations (6 types) and values (4 types) for circular use of materials (10 types). So motivations and values are independent variables and circular use dependent variable. Also I have a moderating variable, homeownership (4 types).
I am using SPSS.
What kind of analysis should I run? I was thinking of GLM multivariate, but how to incorporate the moderating effect?
For my experiments I need circularly polarized laser light at 222 nm.
Can anyone tell me is there any important difference between a λ/4 phase plate and a Fresnel rhomb? Prices seem to be comparable. My intuition tells me that phase plate could be significantly less durable due to optical damage of UV AR coatings on all of the surfaces. Also it seems that it is much harder to manufacture the UV phase plate since there are very limited light sources for testing. While Fresnel rhomb seems to be more easy to produce and apochromat. What am I supposed to choose?
Basically, the circular plasmid is more specific to identify its completeness. However, when we gain the metagenomic sequencing result from bacterial community or whole-genome sequencing result from bacterial isolates, after assembly of contigs, it is not clearly to confirm the completeness of linear plasmid.
I have designed two circular hollow waveguides in CST, one has a 1 mm radius and the other has 1.8 mm. i am plotting the phase constant (beta) vs frequency. I am confused about what this plot defines.
also, I get two different plots from the same design. 1 from the 2D results (s-parameters) and the other from the port information. (attached picture)
can anyone tell me whether these plots have the same meaning or relation? and what this plot defines. is it good or worse?
I am a Phd student and I want to study how digital platform enable circular supply chain. Do you have some relevant concepts or topics that need to be integrated in this study ? any suggestion of relevant articles?
This is a 2D meshing of airfoil NACA0012 by ansys 2020 R2. I have tried for thousands of times by viewing several tutorials using different airfoil profiles but I found the same issue. The whole area was not uniformly structured meshed (C type meshing). I have tried the same operation by splitting the face into 2/4/6 segments by face split tool, but I could not resolve the problem. When half circular side is uniformly meshed, the rectangular surface is not uniformed, and when the rectangular side is okay then half-circular side is defected. I have tried by varying the number of divisions from 50 to 200, also varied the bias, but failed. Would anybody tell me why does this happen and how to overcome it to get a uniformly distributed structured grid type meshing?
i would like to calculate the absorption spectra for different orientation of circular polarization of the pumb laser for 2d materials .
to do this calculation i can use turbo_lanczos.x then turbo_spectrum.x , how i can include the orientation of circular polarization using quantum espresso ??
can you please give me some suggestion
I have a linear fragment having overlapping ends. I wanted to know that whether by Gibson, can we circularize that linear fragment and use it as a rDNA for transfection or not?
If possible, kindly mention how?
As Gibson reaction requires the master mix, enzymes, vector as well as insert so how to modulate the protocol and whether it will give the expected result or not?
There is a steel shimmed circular tank of diameter 6.0 m which needs grout to be poured beneath its base plate. What is the proper way to apply grout under this area rather than just pouring using a circular formwork to ensure that the grout really sealed all the voids beneath the tank base plate, will using a grout pump make any difference than the normal manual pouring method?
I have a background in sustainable business model innovation / circular economy but have spent the last 5 years or so working on a project focused on airport noise management. I am looking to get up to speed on what I might have missed and I'm wondering what people think is the essential academic literature on these themes in the past 5 years or so.
Any advice much appreciated!
The concept of Circular Economy (CE) in the Construction Industry (CI) is mainly about the R-principles: Rethink, Reduce, Reuse, Repair, and Recycle. Thus, if the design stage following an effective job site management would include consideration of the whole lifecycle of the building with further directions of the possible use of the structure elements, the waste amount could be decreased or eliminated. Analysis of the current literature has shown that CE opportunities in CI are mostly linked to materials reuse. Other top-researched areas include the development of different circularity measures, especially during the construction period.
In the last decade, AI merged as a powerful method. It solved many problems in various domains, such as object detection in visual data, automatic speech recognition, neural translation, and tumor segmentation in computer tomography scans.
Despite the broader range of works on the circular economy, AI was not widely utilized in this field. Thus, I would like to ask if you have an opinion or idea on how Artificial intelligence (AI) can be useful in developing or applying circular construction activities?
I am planning to do my dissertation on the topic bullwhip effect in service industry or circular economy , I am kind of stuck to on the literature review to submit research proposal. Please suggest if I can get some guidance will be of tremendous help
I have identified numerous barriers to the transition to circular economy from literature and I want to quantify the identified barriers
I have designed a microstrip patch antenna for circular polarization. The axial ratio of the antenna is less than 3 dB, but the return loss is only -5dB. How to increase the return loss without affecting the axial ratio.
Antenna Structure: It is a single feed square patch antenna with truncated corners
I am looking for a formula which will help in calculating the number of equal circular components that than fit inside the circular shapped tray.
For the number of smaller circles upto 3000.
Hi everyone, I have designed a circular patch array antenna(from paper) in HFSS 2018.2 environment working at the ISM band. I got negative gain(-10.6dBi) and realized gain(-10dBi) designed structure at operating frequency. After analysis I found that their radiation efficiency is very less means the antenna is not radiating. Further, I plot the matching parameter to see whether the matching is good or not. I found matching is already good. I have used microstrip feed. Please help me to get positive gain. I have attached my HFSS file here. Please help me to get positive gain(dBi) and make the antenna radiate?
I have to join two circular discs which have to be joined by any epoxy resin but service temperature of tthe disc is 250 degree Celcius. Can anybdy suggest me a commercially available epoxy adhesive That can withstand the above mentioned temperature. I found some of them but not easily available in india.
The Euler-Bernoulli formula for beams is not valid for short beams (beams with length less than the depth). So, Is the torsion formula for circular shafts applicable to short shafts?
Good Day Sir/Miss,
My name is Jackson Liew and I am a Master student in University Tun Hussein Onn Malaysia (UTHM) currently undergoing my Master's research with the title "A Study of Circular Economy Model for Product Packaging based on Analytical Hierarchy Process".
I wish that this survey can be responeded by researcher who are expertise in the area of packaging, Circular Economy and also sustainability. I wish that you could participate in this research study by completing the attached survey which is in the type of google form (https://forms.gle/MGqkeGQo32AameDs9). The survey will require a short time to complete. I will ensure that all the information provided will remain confidential.
Thank you for taking your time to assist me in my educational endeavors. The data collected will provide useful information for the next phases of my research. It will be much appreciated if you could participate in my academic survey. If you require additional information or have questions, kindly contact me through this email address (firstname.lastname@example.org).
Circular Economy and Triple Bottom line are two main tools in achieving sustainable development goals. But many academics, professionals and stakeholders are finding difficult to distinguish the difference between them and also fail to interconnect them. In this aspect, how they are inter related in terms of construction industry and technological applications?
I really appreciate every answer because this project is going to be my Master Degree Thesis.
I have already studied a lot of softwares, such as: Ecolizer, openLCA, GaBi, SimaPro, Ecochain and Umberto, and many databases: Eco-invent, US LCI, ELCD, Environmental footprint and BioEnergieDAT.
Together with some dear colleagues we are working on a new project. what do you think about the relationship between green chemistry and circular economy models applied to the clothing industry?
I have noticed that my DAPI staining (in the hippocampus of 20 micron thick brain sections) has a lot of variation in the staining intensity. In particular, larger circular cells appear lighter whereas smaller oval-shaped cells are more intense. Does anyone know whether these differences might be due to differences in cell type or cells being in a different stage of the cell cycle?
I attached an image and hopefully it is clear.
I stain my sections by directly pipette the DAPI (1:500 diluted in PBS) onto mounted tissue sections and incubating for 20 minutes at room temperature.
I would like to design a phase shifter for uniform circular array of array radius of 0.5 lambda which has 4 microstrip patch antenna elements, using cst software and 1 port.
Please help me out.
Hello! I'm curious whether anyone has used sectoral input-output modelling to test or identify circular (as in Circular Economy) patterns in the economy. My impression is that most publicly available economic data is very "linear" in nature, reporting income, output, and flows among sectors. I'd be curious if anyone in the economics or regional economics fields have applied these methods with an eye toward circular patterns like resource recirculation, re-use, durability, adaptability, value retention, etc.
I have designed one patch later I used transform option and rotated it to 45 degrees for 8 element circular array.
But it throws an error saying "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solver."
I think when I rotate it to 45 degrees obviously then cartesian coordinate what I want is tilted. Then how should I design circular array.
Currently, two distinct types of indicators are being developed: (1) monitoring frameworks based on macro indicators that summarize progress at the national level, and (2) micro indicators aimed at analyzing circularity at the product level.
How to bridge the gap between the macro and micro levels of Circular Economy using any Logistic approach? My focus is to incorporate logistic strategies which could help in bridging the gap between the macro and micro levels of CE. Any reference papers or suggestions will be highly appreciated.
I want to assess performance of a 4 and 5 antennas (arranged in the form of circular array), by calculating different parameters such as CRB and RMSE. However, as I have seen in theory, a number of different formulas and methods are implemented. Moreover, what I learnt till now is that you have to deduce a different CRB formula for different scenario. Is there some basic guide or some instructions which can point me in the right direction for calculating CRB as per given antenna design?
What are some of the possible indicators in the Circular Economy(CE) in terms of the Food Industry?
Is there any research paper that could possibly show the CE indicators in the context of the Food Industry?
Any paper link would be highly appreciated. Thanks and regards.
Please answer a few questions, while I assure you that the answers are confidential and that they will be used exclusively for research purposes. The average duration of completing the questionnaire is 10-15 minutes. Please note that this questionnaire is anonymous and does not collect personal data.
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What is the best software tool, from people's experience, for designing primers to clone via circular polymerase extension cloning (CPEC)? Is there a software that can smartly design primers (optimal Tm, no self dimerizing) to linearize a plasmid and add an insert, stating optimal annealing temperatures?
Many thanks in advance
in my opinion, directly no because the shape of the resin after performing mechanical stirring will be mixed up and maybe it gets a circular shape but then we can modify the shape ( by some chemical processes) to obtain a honeycomb structure. I would like to know what do you think.
I am in problem in measuring the transition temperature of a Superconducting sample.
I am getting absurd behaviour.
I am using four probe method with a disc type pellet.
Is it not possible to do the experiment by circular disc?
Thanks and Regards
We are beginning a meta-analysis to compare electronic waste production, processing, and transportation. This is a new field for our group, and we would love to know what available international, national, or regional databases are available. Likewise, if anyone is interested in a collaborating on this project, a M.S. student in our group is highly motivated to push this forward.
Key terms: e-waste; Waste from electrical and electronic equipment (WEEE); circular economy; electronic waste; electronic recycling; end of life; life cycle analysis.
I recently learnt how to use Plaxis for my thesis, however I do not know how to interpret the result correctly.
The displacement profile is showing that the maximum displacement is 47.54 x 10^6 m, and the red colour failure region is circular shape. I would like to know does it mean the failure plane is circular and total soil displaced is 47.54 x 10^6 m？
While the displacement mesh diagram, what does it mean by "displacement scaled up to 200.00 x 10^9 times"?
I would greatly appreciate it if someone could explain to me.
I finished my Ph.D. in 2020, majoring in Biology and environmental science, at the University of Helsinki. I wish to do a postdoc by applying for the podoco grant. You can find more information about podoco - www.podoco.fi/companies/
To apply for the podoco grant, I need to collaborate with an organization or a company and prepare a project plan that is beneficial for that organization. I am asking your help to provide names of companies and non -governmental organizations in Finland working within the area of food and sustainability issues, circular economy, natural resource management, environment, and climate change. Looking forward to getting your advice. Thanks in advance.
- Will companies align circular economy initiatives with climate goals, or continue to treat these as discrete initiatives?
- How will technological innovation deal with the problems identified around natural resource depletion?
- Will moving toward a circular economy require changes in consumer behaviour? Are those happening?
I would like to request your collaboration to take part in the survey, available at the links: (EN): https://lnkd.in/djVdWne (IT): https://lnkd.in/dnvK3eJ (PT-BR): https://lnkd.in/dVGWmHv This questionnaire is part of the project aiming to analyze the transition from a linear economy to a circular economy, comparing developed and developing countries, at a macro level (nations, regions, cities). The project is a partnership between the University of Brasilia (Brazil), coordinated by Professor Patricia Guarnieri and the University of Bologna (Italy), coordinated by Professor Augusto Bianchini.
Your participation is very important to us. Please share with your network! Sincerely,
I am interested in collating evidence on circular solutions for recovery and reuse of nutrients from different waste streams in the agricultural sector. Therefore, I would like to know the findings, case studies, challenges, barriers, and opinions of experts on circularity in food systems.
Hi! I'm looking for conferences/summits regarding circular economy and social/sustainable entrepreneurship that are indexed in scopus and/or are the best worldwide. Can you suggest me one?
As we all know that the rate of using display technologies has been soaring up with each passing day. The need for glass materials for display devices such as smartphones, touch screens, or the like emerges as indispensable. In this sense, what are their rate of recycling and/or reusing for fostering the circular economy model, as well as towards carbon neutrality aims? Can anyone help to realize the facts in terms of statistical data?
Many thanks in advance for your kind contributions.
I have three configuration of heat sinks(Fins) which are made up of Aluminum that are pin(circular) type, square type and triangular type configuration has better heat transfer rate comparatively?
I have an almost edited manuscript completely free from plagiarism. The editor of the book has given the article an approval to be published. Need a copy editor who can work with me on the book chapter publication and review the article. The work deals in the aspect of circular economy and the life of rag pickers.
I'm working on a Research focused on this theme and I would be grateful if some of you can share his/her knowledge about the topic. Any input is appreciated, thank you.
I am looking for a research topic for conducting systematic literature on circular economy. Can you please suggest some research about circular economy for the systematic literature review? I will appreciate your cooperation.
I am looking for an efficient way for punching out circular scaffolds from a sponge like material. I think, a biopsy punch should work, but the ones I have tried till date have failed. Can anyone suggest a biopsy punch from any company that can do the job or any other method?
Thanks a lot
Here, it means the distance from a point on the surface of the cylinder to the point itself(taking a uniform route with out twisting).
I'm doing a subcloning experiment with a pTNT vector and I treated it and my inserts (engineered with RE recognition sites) with EcoRI and KpnI, then incubated the digested vector with alkaline phophatase. I did a control experiment with each enzyme individually to confirm that they were both active. Upon doing a ligation experiment and screening the colonies, all of them had circular vector with no insert. To make matters more confusing, I was able to successfully ligate one gene into the double digested pTNT vector already, so I'm completely baffled as to why my vector is now showing signs of self-ligation.
I am trying to calculate the axial capacity of a circular column which is warped by spirally wrapped and striped wrapped. I have attached two figure which will help you to understand my question.
I have a circular loop absorber with two dielectric substrates. I want to reduce the reflection at 3GHz. When i set the circumference to half of the effective wavelength, I got this simulation result.
My equation is why the second resonance is obtained at 12 GHz instead of the 2nd harmonic (6GHz)? And why is the reflection coefficient at 12 GHz smaller than at 3 GHz?!
Some theories of physics require (not merely allow) magnetic monopoles. [See, for example, David J. Griffiths, Introduction to Electrodynamics, Fourth (Kindle) Edition (Cambridge University Press, Cambridge, UK, 2017.] But how can a theory that requires (not merely allows) magnetic monopoles be consistent with the fact that magnets with circular magnetic fields — and hence with no poles (neither a north pole nor a south pole) — exist? Two examples: (i) A horseshoe iron, alnico, or other permanent magnet bent into a circle, with the poles cold-welded together. (Cold welding is possible in a vacuum for surfaces planed very smooth.) (ii) A toroidal-solenoid electromagnet (with or without an enclosed iron core for increased strength). The magnetic field lines in such magnets are circular — and hence with no poles — neither a north pole nor a south pole.
I'll be working on how circular economy can be implemented in the forestry sector and people dependent on those forests.
Kuhn's Structure of Scientific Revolutions represents a watershed moment in the study of the history of science. His terminology of the paradigm, and particularly the paradigm shift, have entered the popular lexicon.
Yet, as noted in three generations of reviewers (corresponding to the first, second, and 50th anniversary editions) the ideas presented in the volume have been controversial from their inception, ranging from accusations of vagueness, through circularity, to extreme relativism.
Of the responses to Kuhn's ideas which would you recommend as the best reading.
Frontiers of LCA knowledge tend to expand while circularity indicators tend to disperse sporadically. Mainly, what some circularity indicators can quantify that LCA does not is monetary value retention. Is the goal of developing new circularity indicators to progress on our comprehension of absolute sustainability assessment? Why wouldn’t they integrate more of current knowledge while LCA does? What's the environmental contribution of quantifying/assessing circularity ?
I would like to request your collaboration to take part in the survey, available at the links (you can choose your preferred language):
This questionnaire is part of the project aiming to analyze the transition from a linear economy to a circular economy, comparing developed and developing countries, at a macro level (nations, regions, cities). The project is a partnership between the University of Brasilia (Brazil) and several other universities (University of Bologna (Italy); University JAUME I (Spain), University of Aalborg (Denmark); Federal University of Pernambuco (Brazil); Federal Technological University of Parana (Brazil); Ghulam Ishaq Khan Institute of Engineering Sciences and Technology (Pakistan); Shaheed Benazir Bhutto University (Pakistan), coordinated by Professor Patricia Guarnieri (University of Brasilia).
It will be great to have your participation in our research, mainly because we would like to get the opinion from experts and stakeholders involved in the transition towards a circular economy and sustainability studies. Please share with your contacts
If you have any doubt, please let me know.
I am planning to analyze the Hertzian contact stress and contact radius for Pin-on-dis wear testing, where pain with the flat end was employed. If possible, I would like to know whether I can treat the contact between the pin and disc as circular contact or point contact.
I am doing ligation of the padlock probe. The efficiency is pretty good (more than 90%). But I have a very simple question about this process.
As shown in the following figure, in normal ligation process of a padlock probe, a single padlock probe is circularized by ligase. But according to simple math, events like two padlock probes are ligated in a head-to-tail fashion should also happen.
So I just wander, why the ligation process does not go on according to the theoretical probability, but insteand, prefer a intramolecular circularization reaction?
I'm modelling in Ansys APDL a circular plate with a circular hole in its center loaded by a unitary compressive load (as in the brazilian disk test). I'm modelling only one fourth of the geometry. In the evaluation of the SIF I have a difference of one order of magnitude (0.019301 of Ansys vs 0.001914 of the analytical results). Can anybody tell me what could be the mistake?