growth limits
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2021 ◽  
Author(s):  
◽  
Robin Aitken

<p><b>The concept of growth limits is reoccurring within city theory. If city growth is constrained, then denser development patterns must be used. Contemporary theory on city form is centred on arguments for more sustainable cities, so methods of densification must be sustainable. Very little work in the field of architecture or urban design has been done to investigate the potential of defining the edge to the city through built form. None has been found that translates the edge of a green-belted city into a built form.</b></p> <p>Therefore, this thesis suggests that in some cases, defining the edge of a green-belted city through built form is a logical step to take in the evolution of these cities. The greenbelt is a widely used tool in cities around the world and has been implemented in various ways. In order to produce a site-specific response to the edge condition created by greenbelt and city, the design is located in Wellington. Wellington is highlighted as an unusual case for the relationship between city and greenbelt for two reasons.</p> <p>The first is that the Wellington Outer Green Belt, formally established in 2004, has grown from a public desire to have a continuous network of recreational tracks running the length of the western edge of the city and protecting the highly valued visual amenity of ridgelines and hilltops. This is opposed to cities which have implemented greenbelts primarily to constrict growth. The second, closely connected to the first, is that the greenbelt boundary has largely been influenced by topographical constraints on settlement patterns and is not an arbitrary planning gesture.</p> <p>Wellington is also unusual because of the inclusion of a town belt in the original colonial layout of the city in 1841. The belt has survived largely intact, and can provide insight into the nature of city growth up against a green edge. This thesis aims to draw together two aspects of city form; the relationship between greenbelt and city and the understanding that denser, intensified settlement patterns provide a more ecological form and therefore poses the hypothesis that defining the edge of the city through intensification can contribute to an ecological city form.</p>


2021 ◽  
Author(s):  
◽  
Robin Aitken

<p><b>The concept of growth limits is reoccurring within city theory. If city growth is constrained, then denser development patterns must be used. Contemporary theory on city form is centred on arguments for more sustainable cities, so methods of densification must be sustainable. Very little work in the field of architecture or urban design has been done to investigate the potential of defining the edge to the city through built form. None has been found that translates the edge of a green-belted city into a built form.</b></p> <p>Therefore, this thesis suggests that in some cases, defining the edge of a green-belted city through built form is a logical step to take in the evolution of these cities. The greenbelt is a widely used tool in cities around the world and has been implemented in various ways. In order to produce a site-specific response to the edge condition created by greenbelt and city, the design is located in Wellington. Wellington is highlighted as an unusual case for the relationship between city and greenbelt for two reasons.</p> <p>The first is that the Wellington Outer Green Belt, formally established in 2004, has grown from a public desire to have a continuous network of recreational tracks running the length of the western edge of the city and protecting the highly valued visual amenity of ridgelines and hilltops. This is opposed to cities which have implemented greenbelts primarily to constrict growth. The second, closely connected to the first, is that the greenbelt boundary has largely been influenced by topographical constraints on settlement patterns and is not an arbitrary planning gesture.</p> <p>Wellington is also unusual because of the inclusion of a town belt in the original colonial layout of the city in 1841. The belt has survived largely intact, and can provide insight into the nature of city growth up against a green edge. This thesis aims to draw together two aspects of city form; the relationship between greenbelt and city and the understanding that denser, intensified settlement patterns provide a more ecological form and therefore poses the hypothesis that defining the edge of the city through intensification can contribute to an ecological city form.</p>


2021 ◽  
Vol 14 (27) ◽  
Author(s):  
Vesna Petrović ◽  
Ivan Mirović

Тhis paper considers the phenomenon of global growth, emphasizing the slowdown and (limits) of the Western GDP growth. By comparing the United States as the most mature economy in the world, China as the new hegemon, the OECD countries, the BRICS countries, and the rest of the world, we show the growth and unequal development of the five "regional futures" of the global world. In addition to the imminent economic reasons for the backwardness of Western economies and societies, the crisis of the structure and functioning of the democratic capitalist system, and the ecological limits of sustainability, we emphasize two non-economic moments: the end of liberalism as a fundamental ideology of the Western world, and the loss of trust, which is a fundamental moral category. According to futurist forecasts, the West has slowed down, the financial system has been damaged, and the recovery is slow and uncertain. The following subjects are being considered: the growth paradigm, the belief in lasting progress, the end of liberalism and the loss of confidence, the recovery of Western economies, some monetary policy measures, and European fiduciary money and the slowdown of the growth in the Eurozone. The monetary economy of the euro as an agreed single currency has caused strong changes in the Eurozone and has “trapped” the European Union. The euro economy, among other things, is responsible for the sharp division of the Eurozone member states into surplus and deficit countries, and the Eurozone crisis, stagnation, and slowdown in economic (non- economic) growth.


2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yoseb Song ◽  
Jiyun Bae ◽  
Jongoh Shin ◽  
Sangrak Jin ◽  
Jung-Kul Lee ◽  
...  

AbstractAcetogens are anaerobic bacteria that utilise gaseous feedstocks such as carbon monoxide (CO) and carbon dioxide (CO2) to synthesise biomass and various metabolites via the energetically efficient Wood-Ljungdahl pathway. Because of this pathway, acetogens have been considered as a novel platform to produce biochemicals from gaseous feedstocks, potentially replacing the conventional thermochemical processes. Despite their advantages, a lack of systematic understanding of the transcriptional and translational regulation in acetogens during autotrophic growth limits the rational strain design to produce the desired products. To overcome this problem, we presented RNA sequencing and ribosome profiling data of four acetogens cultivated under heterotrophic and autotrophic conditions, providing data on genome-scale transcriptional and translational responses of acetogens during CO2 fixation. These data facilitate the discovery of regulatory elements embedded in their genomes, which could be utilised to engineer strains to achieve better growth and productivity. We anticipate that these data will expand our understanding of the processes of CO2 fixation and will help in the designing of strains for the desired biochemical production.


Author(s):  
Naiqing Zhang ◽  
Xiaojie Shen ◽  
Guangyu Zhao ◽  
Xianbo Yu ◽  
Huihuang Huang ◽  
...  

Undesirable lithium dendrite growth limits the application of lithium metal anode in high-energy storage batteries. Here, multifunctional SnSe-C composite modified 3D scaffolds is constructed to achieve dendrite-free lithium deposition. During...


2021 ◽  
Vol 247 ◽  
pp. 01074
Author(s):  
Alexander Bogomolov ◽  
Victor Nevezhin ◽  
Margarita Larionova ◽  
Elena Piskun

According to Meadows' model, the main factor that determines the limits to the growth of the human civilization is the agricultural sector of the planet, the latter, however, significantly pollutes the environment and togather with other factors contributes much to global warming. A half of all the habitable land is used for agriculture. Unless the efficiency of agriculture is fundamentally improved and the amount of waste generated as a result, is reduced, a global catastrophe may befall in 30–50 years. Whereas agrarian “garbage” may not be just the waste that pollutes the environment, it can decrease the burden on the environment by being the raw material for fertilizers, feed or fuel manufacturing. Modern digital technologies can improve the efficiency of agriculture, organize low-waste or non-waste production and that will enable people to diminish the pollution of the environment and push away the limits to the growth of human civilization. The developed countries are using digital technologies more and more intensively to increase agricultural productivity and, at the same time, reduce both environmental pollution with agricultural waste and disruption of the ecological balance. The digitalization of agricultural business, the use of geoinformation technologies, drones, robots, artificial intelligence and other technologies of the digital society help to push the limits to the growth of human civilization away into the future.


Author(s):  
Niyaz Sirwan Ali ◽  
Huner Hiwa Arif

    Coagulase negative staphylococci (CNS) have been recorded as a conveying vector for virulence genes and have been implicated in some cases of food poisoning. Research interest in CNS has increased over the past decade following their implication in infections in animals and humans. This study was aimed to detect CNS isolated from 150 dairy products (yoghurt, several types of cheese, Lork, and Serezh) in Sulaimani and Halabja governorate. Thirteen isolates out of 150 samples were identified as CNS using the VITEK® 2 system as an identification method. Results revealed that the most common isolates species including Staphylococcus saprophyticus, Staphylococcus sciuri and Staphylococcus xylosus each species have been identified in 3 samples separately (23%), followed by Staphylococcus vitulinus was in 2 samples (15%), Staphylococcus equorum found in 1 sample (8%), and Staphylococcus gallinarum also was in one sample (8%). The isolated CNS did not have enterotoxins type A to E according to RIDASCREEN kit test. Studying the growth limits of S. saprophyticus and S. vitulinus results showed that S. saprophyticus grew better at pH levels (5,6,7) at (25℃,37℃) and low NaCl concentration (5%), while low bacterial activity was observed at pH 4 at all temperatures and NaCl concentrations and also at 4℃ at all pH and NaCl levels. S. vitulinus behaviour was almost the same as S. saprophyticus but, S. vitulinus was able to tolerate different NaCl concentrations and overall had higher bacterial activity in all parameter’s interactions than S. saprophyticus. Investigating the effect of acetic acid and lactic acid on the growth of previous species where studied, S. saprophyticus grew better in different concentrations of L.A but S. vitulinus showed more activity than S. saprophyticus in A.A and the growth of both species inhibited at 0.4% of L.A at the first 24 hours of incubation.


2020 ◽  
Author(s):  
Chuhong Wang ◽  
Koutarou Aoyagi ◽  
Muratahan Aykol ◽  
Tim Mueller

The development of all-solid-state lithium ion batteries has been hindered by the formation of a poorly conductive interphase at the interface between electrode and electrolyte materials. In the manuscript, we shed light on this problem by computationally evaluating potential lithium ion diffusion pathways through metastable arrangements of product phases that can form at 56 interfaces between common electrode and electrolyte materials. The evaluation of lithium-ion conductivities in the product phases is made possible by the use of machine-learned interatomic potentials trained on the fly. We identify likely reasons for the degradation of solid-state battery performance and discuss how these problems could be mitigated. These results provide enhanced understanding of how interface impedance growth limits the performance of all-solid-state lithium-ion batteries.


2020 ◽  
Author(s):  
Chuhong Wang ◽  
Koutarou Aoyagi ◽  
Muratahan Aykol ◽  
Tim Mueller

The development of all-solid-state lithium ion batteries has been hindered by the formation of a poorly conductive interphase at the interface between electrode and electrolyte materials. In the manuscript, we shed light on this problem by computationally evaluating potential lithium ion diffusion pathways through metastable arrangements of product phases that can form at 56 interfaces between common electrode and electrolyte materials. The evaluation of lithium-ion conductivities in the product phases is made possible by the use of machine-learned interatomic potentials trained on the fly. We identify likely reasons for the degradation of solid-state battery performance and discuss how these problems could be mitigated. These results provide enhanced understanding of how interface impedance growth limits the performance of all-solid-state lithium-ion batteries.


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