586 private links
Dr Erik Johansson (Uppsala universitet) ger i denna korta video en beskrivning av kvantprickar med anledning av årets nobelpris i kemi.
A very nice resource!
I found it while reading up on presentation software (pdfpc and such).
Det första föredraget av Petter Falk (doktorand på Karlstads universitet) var riktigt bra. Man får hoppas Trafikverket lyssnar.
Really nice work by Steve Byrnes. Very useful.
Archived.
I keep getting annoyed by Doodle. In this latest example, it proved impossible to change the shown "name" as guest user once my answer was submitted, despite it being possible to change everything else, or even decline. (I wanted to make use of the "name" field to include a single-word message to the organizer.) And when logged in the name field never even showed up during the answer flow.
Alternatives to Doodle
- https://crab.fit (it's FOSS, source code on Github)
- https://framadate.org/abc/en (FOSS, by the well-known French organization Framasoft)
- https://datumprikker.nl (not FOSS, but perhaps convenient since it offers Google and Apple apps). Don't forget to change to English in the menu.
Self-hostable alternatives
- https://github.com/lukevella/Rallly >2k stars, on v3.3.0, built on Next.js. Reddit thread.
- https://github.com/kellerben/dudle >300 stars, on v1.2, built on Ruby. Reddit thread.
- Nextcloud may have some doodle-like app (I haven't checked).
- https://www.nytimes.com/2023/10/15/business/nigeria-fertilizer-shortage.html Behind paywall, inaccessible. Intro to the article here, what appears to be the full article here. Via chemjobber.
- https://www.poynter.org/reporting-editing/2022/world-food-supply-threatened-global-fertilizer-shortage/
African farmers on average use the least fertilizer per acre in the world and have some of the lowest yields, particularly for corn and other grains that provide the bulk of the continent’s calories. As a result, despite having 60 percent of the world’s arable land, almost half the countries in Africa depends on imported wheat from Russia and Ukraine, with 14 African countries getting more than half their wheat from the two warring nations.
- https://www.nationalgeographic.com/environment/article/global-food-crisis-looms-as-fertilizer-supplies-dwindle National Geographic, 2023-05-23
First farm in Kenya to produce fossil-free fertilizer (ammonia from renewably produced hydrogen), built by US startup firm Talus Renewables. Yale Environment 360 Magazine, 2023-10-11.
- https://www.businessinsider.com/fertilizer-shortage-is-at-the-heart-of-pending-food-crisis-2022-8 Business Insider, 2022-08-01
- https://nelhydrogen.com/press-release/awarded-iberdrola-contract-for-20-mw-green-fertilizer-project-in-spain/
- https://africafertilizer.org - slightly suspect website, but might contain useful data.
avtal med företaget ArkivIT om drift och support av ett e-arkivsystem baserat på programvarorna Archivematica och AtoM (Access to Memory)
Hösten 2021 gick det Enskilda e-arkivet med Arkiv Sörmland i spetsen in i slutfasen för E-arkivportalen. Tanken är att portalen ska nyttjas av föreningar som vill arkivera digitalt material som i första hand tillkommit digitalt. Det kan röra sig om hemsidor, sociala medier, mailkorrespondens, avtal, räkenskaper, fotografier, videofiler, och mycket mer.
UNIDO's (UN Industrial Development Organization) projects and programmes at a glance. Has a really nice by country explorer.
Unfortunately neither the UNIDO website nor its Open Data platform appear to feature any RSS feeds.
I takt med att prisjakt försämras och dag för dag blir mindre användbart (senaste försämringen var Cloudflare "säkerhetskontroll" när man klickar på en produktlänk för att "gå till butik"...) blir det tyvärr nödvändigt att hålla en egen lista över återförsäljare och dylikt.
- https://www.alina.se, säljer även begagnat
- http://combitdata.se
- https://www.computersalg.se, säljer även begagnat
- https://www.dustin.se
- https://www.datagrottan.se, säljer även begagnat
- https://elektronik24.se
- https://www.inet.se, säljer även begagnat
- https://www.komplett.se
- https://net2world.se, säljer även begagnat
- https://www.netonnet.se, säljer även begagnat
- http://www.netvaruhuset.com/se
- https://www.proshop.se, säljer även begagnat
- https://www.senetic.se
- https://www.verbit.se
- https://www.westium.com
Manufacturers
Aggregators (they pretend to be markets, terms may vary)
Let's say you have a very large Zotero library, from which you export a likewise large BibLaTeX file, say full-library.bib.
In your document you load that large BIB-file (because that's easy), \addbibresource{full-library.bib}, but naturally cite only a subset of works.
Now you want to share the source code for this document with someone else, and provide them with a BIB-file so they can recompile it if they wish. Can we produce a BIB-file containing only the entries that were actually cited in the document?
Yes, we can. biber has built-in support for this scenario. Just make sure your latest compilation produced a proper .bcf file, then:
biber --output_format=bibtex --output_resolve document.bcfwhich will create document_biber.bib, a properly formatted BibLaTeX BIB-file containing only the subset of works from your library that were actually cited in this document.
I'm afraid I don't remember where I learned this.
This is cool, research data on SND is now indexed and findable via the Swedish data portal.
At least not reliably. What is going on?
I can see new messages in other IMAP clients, such as K9 Mail. But Thunderbird shows no new messages, despite F5 or Shift+F5.
TB never behaved this way before (102). New messages were automatically fetched.
Going offline by clicking the icon in the lower left makes TB prompt if we first want to download all messages; the blue list in the status bar keeps pulsing forever, but no new messages are fetched.
Restarted into "troubleshoot mode" - now it works. Ok, so could it be a problem with one of my extensions?
Seems not - I restarted Thunderbird with all extensions disabled, and it still will not fetch any messages from any email account. I have no time for this. I am reverting to v102 from my profile backup (always good to have a backup of your profile!).
- An overview of redox flow battery manufacturers, video by "Just Have a Think", Youtube (2023).
Utforska den biologiska mångfalden!
Här samlar och presenterar vi vår och andras kunskap om djur och natur. Vi arbetar på att beskriva de cirka 60 000 arterna som finns i Norden och Baltikum.
Presentationen på denna sajt är dock ganska torr. Många sidor saknar beskrivning. Länkar för all del till Wikipedia och andra sajter.
En mycket mer visuell presentation av "livets träd" är den på OneZoom.
En annan (sidindelad som Naturforskaren men med mer visuella element) är Tree of Life web project.
On the political arena, the Egyptian government has established a "National Council for Green Hydrogen and its Derivatives", chaired by the prime minister and counting among its members: the minister of electricity and renewable energy, the minister of petroleum and mineral resources, the minister of justice, the minister of planning and economic development, the minister of finance, the minister of environment, the minister of housing, the minister of utilities and urban communities, the minister of transportation, the minister of trade and industry, the minister of irrigation, the minister of state for military production, the chairman of the Suez canal authority, the chairman of the general authority for the Suez canal economic zone, the first assistant to the prime minister, the CEO of the general authority for investment and free zones, and the executive director of Egypt's Sovereign Fund.
I must admit I wonder what the point is forming a special council if it includes what appears to be most of the government. No word on permanent members from industry or academia.
On the council's first meeting an executive committee was formed (unclear who its members are) and tasked with speeding up the approval process for green hydrogen projects and to entice companies to invest in such projects, using investment incentives such as 33%–55% less tax, and exempting most equipment and supplies from VAT tax, an exemption from real estate tax on buildings, and waived fees for registering the companies in Egypt.
To date, the government has signed memoranda of understanding (MoU) with among others ACWA Power (Saudi Arabia), Benchmark Alliance (?), China Energy company, the national holding company for chemical industries (the Egyptian one, I assume), DAI global company (Germany), OCIOR Energy company (India), Voltalia-TAQA alliance (sounds Italian?), and British Petroleum.
The stated ambition of the government is to produce green hydrogen at 1.7 USD/kg by 2050 and to capture 8% of the global market. The government expects that total foreign investment into green hydrogen projects to reach 81 billion USD by 2035.
The national strategy for green hydrogen is yet to be published, as far as I can tell.
Sverige
- In Tomteboda, Stockholm's largest PV roof-mounted plant, produces 400 MWh per year (1465 PV panels covering an area of 4000 m²). Co-owned by Areim and Blackstone and operated by Obligo Real Estate. (2021)
- The largest solar power plant in Sweden is built by a home-owner's co-op (HSB Södermanland) in cooperation with the energy company Energiengagemang. 41600 PV panels with a total power of 14 MW.
- In Morgongåva (40 km west of Uppsala) the logistics center of online pharmacy Apotea features Sweden's largest roof-mounted PV array with a capacity of 2.3 MW, enough to supply the building's entire annual electricity demand. Built by Solkompaniet. SVT.
- The ports of Stockholm and the port of Södertälje together have almost 4 GW of solar PV panels, and have plans for more.
Misr
- Benban solar park in southern Egypt is one of the world's largest PV plants, covers an area of 37 km² and has a power generation capacity of 1.65 GW (given the site's insolation expected to yield 3.8 TWh per year).
- In Kom Ombo, Egypt's largest privately-owned solar PV plant is expected to start commercial operation in January 2024. ACWA Power (Saudi Arabia) owns and operates the 200 MW utility-scale plant.
Europe
- Uniper (the recently nationalised German energy company) plans two PV plants near existing industrial sites in Wilhelmshaven (300 MW + 17 MW).
- Belgium's first floating PV plant. On a man-made lake on a site owned by Sibelco, a raw material producer.
- Spanish energy company Iberdrola commissioned a 500 MW solar PV park at Núñez de Balboa in the western Spanish region of Extremadura. At the time Europe's largest PV plant, as seen by NASA's Earth Observatory. The project cost €300 million and is made of 1.43 million PV panels. Via @S_Johan_Lindahl.
Asia
- Oman seems to be on a roll. Their governmental energy company Hydrom (recently created to spearhead their green energy transition) is planning a massive green hydrogen project with a capacity to produce 750 kiloton/year (if I understand correctly). 1, 2.
- In Qinghai province, China, a 2.2 GW solar PV plant was connected to the grid in 2020 (at the time the world's largest solar plant).
Americas
- In the five first months of 2023 the United States power sector saw more electricity generation from wind and solar (combined) than from coal for the first time ever. Many other countries have already passed this particular milestone (or phased out coal entirely), so welcome to the club, yankees, and keep it up.
Oceania
- In southern Australia, a 4 MW concentrating PV plant combined with 50 MWh thermal storage for almost round-the-clock power generation is now in operation. The Carwarp power plant is run by RayGen. The site uses triple-junction GaAs solar modules with almost 38% efficiency paired with water-based thermal energy storage. Each tower (there is four of them) has just over 4 m² of photoactive area producing 1 MW of electricity and 2 MW of heat (ΔT=90℃).
- 10 GW of solar power in Australia for Singapore.
- The largest PV plant in New Zealand sits atop a wastewater pond.
- The Nauru Solar Power Development Project - Battery Energy Storage System is a 6 MW solar plant and a 2.5 MWh battery storage system that will increase the share of renewable electricity in Nauru from 3% to 47% (like many other Pacific islands, Nauru relies almost entirely on diesel generators for power), which is expected to fully cover the island nation's current daytime electricity needs.
In related news
- A look at the major floating solar energy farms across the world, NS Energy Business magazine (2019).
- The UK has designated a project to build a 3800 km undersea cable from Morocco as having "national significance". The project is owned by Xlinks. (2023-10-01)
- The government of Egypt is set on building a subsea cable to Greece to sell solar and wind power to Europe. The GREGY interconnector would be 1400 km long and able to transmit 3000 MW. I wonder if power transmission would be strictly uni-directional or if it is meant to also allow power export to Egypt? (2023-09-30)