We’re on the road to nowhere: An exhibition of molecules to transport us

Author(s):  
John Emsley

The rays of the Sun, and the motions of the Moon and Earth, provide energy in abundance. Light from the Sun is absorbed by plants on land and algae in the sea and is used to convert carbon dioxide into high energy carbohydrates, which in turn become oils. Together these provide most of the food energy for animals like ourselves. We can also harvest plants and trees and burn them to release this energy as heat. The sunlight which falls on barren terrain, or on the roofs of buildings, we can also gather by using solar panels to heat water or to make electricity. The sunlight which falls on the oceans leads to evaporation of water which is precipitated on land, and this too we can use to generate hydroelectricity. The Earth itself is a vast reservoir of heat below the crust, but this is not so easily tapped—although in parts of the world, such as New Zealand, hydrothermal heat is an important source of power. We can extract energy from the effects of the Earth’s daily rotation, partly through the weather systems this produces, by using windmills, and possibly through the rise and fall of sea levels, by using tidal barriers and wave power. These sources of clean energy should be able to provide all the fuel and electricity for a sustainable human population of several billion, provided we did most of our travelling on foot or by bicycle. How much these natural renewable sources could really provide is debatable, but we have the means to utilize them so they could supply enough food and energy for a world population of two or three billion, and at a level which allows for most of the high-tech living that we now take for granted. It might even be possible for most families to run a car, provided they were content to travel only a couple of thousand miles a year in it. The trouble is that there are already six billion of us, and forecasts are that this will reach ten billion by the middle of the next century. Most of these people will no doubt aspire to owning a car.

2020 ◽  
Vol 1 (2) ◽  
pp. 53-60
Author(s):  
Adimas Ketut Nalendra ◽  
M. Mujiono ◽  
Rafika Akhsani ◽  
Adiguna Sasama Wahyu Utama

Abstract The increasing human population in the world with the need for mobilization of motorized vehicles both 2 wheels and 4 wheels is no longer a secondary need but has become a primary need. With the increasing population of vehicles on the road becoming its own problem that is often the occurrence of both single and successive accidents that resulted in many victims both minor injuries, severe to death. Kediri is one of the cities with high accident rates. Although in 2018 this number has decreased but in 2017 there were 1,258. This resulted in the need for an information system to dig deeper about it. The k-mean algorithm is an algorithm used to group the same data and put it into a Cluster group to dig up information. The information system was developed using PHP and MYSql programming languages. The results of clustering are of 3 types namely accident rarely, accident-prone and very accident-prone. The most common incidents in the Pare Subdistrict with the cluster being very accident-prone. Throughout 2017 pare sub-districts there were 133 accident cases. Keywords: K-Means, Data mining.,accident, PHP, clustering. __________________________ Abstrak Semakin meningkatnya populasi manusia di dunia dengan kebutuhan mobilisasi kendaraan bermontor baik roda 2 maupun roda 4 bukan lagi menjadi kebutuhan sekunder tetapi sudah menjadi kebutuhan primer. Dengan semakin meningkatnya populasi kendaraan di jalan raya menjadi maslah sendiri yakni sering terjadinya kecelakaan baik tunggal maupun beruntun yang mengakibatkan banyak korban baik luka ringan, berat sampai meninggal dunia. Kediri adalah salah satu kota yang masih tinggi angka kecelakaan. Meski di tahun 2018 ini mengalami angka penurunan akan tetapi di tahun 2017 tercatat 1.258. Hal ini mengakibatkan perlu adanya suatu system informasi untuk menggali lebih dalam mengenai hal tersebut. Algoritma k-mean adalah algoritma yang digunakan untuk mengelompokkan data yang sama dan dimaksukkan ke kelompok Cluster untuk menggali informasi. Pada system infprmasi dikembangkan menggunakan Bahasa pemograman PHP dan MYSql. Hasil dari clustering terdapat 3 jenis yaitu jarang terjadi kecelakaan, rawan kecekalaan dan sangat rawan kecelakaan. Kecataman dengan kejadian terbanyak terjadi di kecamatan Pare dengan cluster sangat rawan kecelakaan. Sepanjang tahun 2017 kecamatan pare terjadi kasus kecelakaan sebanyak 133 kasus. Kata Kunci: K-Means, Kecelakaan, Data mining, PHP, Clustering. __________________________


2019 ◽  
Vol 8 (2) ◽  
pp. 5622-5626 ◽  

This concept shows the design and control of a solar tree PV system for charging cell phones, supplying electricity for street lighting on open urban areas and charging of electric bike on the road side when the charge is decaying. Based on the above applications, a 7 feet height-tree was built. It has three section of branches, each branches contains 5 sub stem over which leaves made of acrylic with solar panels on the top (1.5 feet × 1feet) mounted. The energy storage capacity is 30 Amp. It has 2 USB ports to connect mobile devices and two 12V-300 W electrical outlets to connect those devices to the electricity. The solar tree was designed according to the environmental conditions of Gunupur, Odisha and for optimizing the output power a flow chart with programming developed. The result was compared with the C language programme. At the last, the PV system's availability to satisfy the energetic requirements was verified. Due to population growth and energy demands, the solar energy is the 2nd best source of non conventional energy which is cause pollution free in nature. By using the concept of the series and parallel connection of panel with the help of sub branch of the main stem the efficiency of the system can be improved. As compared to normal PV system in area point of view the Solar tree becomes more efficient. There is no systematic stimulation for usage of solar panels, purely relying on individual cases of installation on different types of objects. Solar tree may be very much helpful for creating awareness about solar resource. This concept elaborates the possibility of building a solar tree in GIET campus odisha, India, covering technical, social and economic aspects. Benefits and potential drawbacks are elaborated, while special emphasis is given to the specifics of its utilization due to the geographical position of odisha and corresponding number of sunny hours/days per year.


Author(s):  
Mrs. D. Sharanya

This paper describes about using solar energy to create intelligent highways. Smart highway and smart road are terms for a number of different proposals to incorporate technologies into roads for better future. Solar median strip uses solar panels, photovoltaic effect, LEDs and microprocessor chips with circuitry boards. Solar panels are arranged on median strip of the road. Energy from these solar panels is used to operate the street lights, water pump for nearby farms and additional energy can be stored and utilized by nearby communities by using an inverter. Solar median strip will pay for itself through generation of electricity. The implementation of this technology will create the clean energy boom. By this way we can use solar energy efficiently. We can also create smart roads for better future without causing damage to environment by using renewable source.


2020 ◽  
Vol 40 (1) ◽  
pp. 127-146
Author(s):  
Diana Junkes ◽  
Luiz Carlos De Brito Rezende ◽  
Ivan Pérsio de Arruda Campos
Keyword(s):  
The Sun ◽  
The Road ◽  

Este artigo tem como objetivo apresentar uma transcriação eficaz do parágrafo final de On the road de Jack Kerouac, que recupere a melopeia presente no original, mas usualmente desconsiderada ou não percebida em muitas das traduções desse texto para outras línguas. Mobilizam-se aqui, para fazê-lo, as contribuições à teoria da tradução oferecidas por Haroldo de Campos em inúmeros artigos, ensaios e conferências, ao longo de quarenta anos. Após breve apresentação do livro, o artigo faz um surveyconceitual do pensamento haroldiano sobre a tradução, em seguida propõe a transcriação do trecho da obra de Kerouac referido acima, com ênfase no trabalho recriador, e cotejando as soluções propostas para o fragmento com traduções para o português feitas em Portugal e no Brasil, expandindo-se a seguir o âmbito da comparação para incluir o francês, oespanhol e o italiano. É digno de nota que, dentre essas traduções, apena a italiana demonstra um esforço bem sucedido de recuperação melopáica.  


2019 ◽  
Vol 207 ◽  
pp. 03002
Author(s):  
Tim Ruhe ◽  
Dominik Elsässer ◽  
Wolfgang Rhode ◽  
Maximilian Nöthe ◽  
Kai Brügge

With very high energy (VHE) gamma-ray astronomy becoming a mature branch of observational astrophysics, and the multi-messenger sky being opened up by neutrino observatories and gravitational wave detectors, we here propose to set up a ring of imaging air Cherenkov telescopes – the Cherenkov Telescope Ring (CTR). The aim of this proposed project would be to facilitate continuous monitoring of sources on the VHE- and multi-messenger sky with minimal time delays and with high sensitivity. Development time and construction cost could be kept comparatively low by both including existing facilities into the monitoring effort, and by relying on substantial previous expertise gained in the community on the road towards the Cherenkov Telescope Array (CTA). This way, the Ring could prove to be a highly efficient facility greatly enhancing the science prospects for future ground-based high-energy astrophysics.


Author(s):  
Chad Broughton

On the Road to Volador were tree-lined, rocky hills, as well as a fútbol field where a few kids kicked around a ball. A boy on a wobbly-wheeled bicycle navigated the dirt path next to the road, spinning his legs as fast as he could to keep up with our truck. Just outside of town, a group of ten women and girls were picking chile piquín on a steep slope above the road. As Josh and I spoke in English to prepare our questions, the women chattered in rapid-fire Spanish to one another, clearly welcoming the work interruption. They had stopped plucking the tiny red and orange chiles, which they collected in two-liter Coke bottles with the tops cut off. Before we could introduce ourselves, an older woman said in Spanish, “It sounds nice, like what we’ve heard on soap operas.” They said they had seen gringos from time to time in Papantla, the municipal seat, and at the pyramids of nearby El Tajin, the spectacular pre-Colombian archeological site. But they claimed during our trip in 2007 that we were the first gringos to visit tiny Volador. The rugged but fertile land around Volador was planted with corn, beans, papaya, chiles, bananas, oranges, mangoes, and other crops. It was more difficult land to farm than that of Agua Dulce. Volador was also more isolated, and it had fewer people. The main difference, though, was that Don Beto Cruz, an absentee landlord from Papantla, owned nearly all of the land surrounding the village. There was no ejido here. Locals traded their labor with Cruz for little plots of land to farm. Wage work in the fields earned about $8 a day, but it was irregular, maybe one or two days a week. Several of the fieldworkers were high school–aged girls earning summer money. Despite the blazing heat, they dressed in jeans or sweatpants and had layers on top to protect against the scratchy fieldwork and the sun. One of the girls wore a white-and-blue shirt that read, “Telesecundaria Mariano Matamoros.” The shirt featured a television with a smiley face inside.


Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 315
Author(s):  
Roberto Ruggieri ◽  
Marco Ruggeri ◽  
Giuliana Vinci ◽  
Stefano Poponi

According to the United Nations (UN), although cities occupy only 3% of Earth’s surface, they host more than half of the global population, are responsible for 70% of energy consumption, and 75% of carbon emissions. All this is a consequence of the massive urbanization verified since the 1950s and which is expected to continue in the coming decades. A crucial issue will therefore concern the management of existing cities and the planning of future ones, and this was also emphasized by the UN Sustainable Development Goals (SDGs), especially in Goal 11 (Sustainable Cities and communities). Smart Cities are often seen as ideal urban environments in which the different dimensions of a city (economy, education, energy, environment, etc.) are managed successfully and proactively. So, one of the most important challenges cities will have to face, is to guide citizens towards a form of “clean” energy consumption, and the dimension on which decision-makers will be able to work is the decarbonization of transport. To achieve this, electric mobility could help reduce polluting emissions on the road. Within this research, the strategies that six Smart Cities (London, Hamburg, Oslo, Milan, Florence, and Bologna) have implemented to encourage the transition to this form of mobility have been studied. Through a systematic review of the literature (Scopus, Google Scholar, and Web of Science) and through the study of the main political/energy documents of the cities, their policies on electric mobility have been evaluated. Then, for each city, SDG 11.6.2 was analyzed to assess the air quality in the last four years (2016–2019) and, therefore, the effectiveness of the policies. The analysis showed, in general, that the policies have worked, inducing reductions in the pollutants of PM2.5, PM10, NO2. In particular, the cities showed the most significant reduction in pollutant (above 20%) were Hamburg (−28% PM2.5 and −2%6 NO2), Milan (−25% PM2.5 and −52% NO2), and London (−26% NO2).


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