Half Life Residual Pointl
Hey! I played it a long time ago and came back for the 2020 update, I had forgotten how good this mod is. I decided to use a bit of noclip at the first few maps and found some 90s anime pictures I never saw before, reminded me a lot of the old sweet half life. I love those little easter eggs! Having a lot of fun!
Caesium-137 has a half-life of about 30.05 years.About 94.6% decays by beta emission to a metastable nuclear isomer of barium: barium-137m (137mBa, Ba-137m). The remainder directly populates the ground state of 137Ba, which is stable. Barium-137m has a half-life of about 153 seconds, and is responsible for all of the gamma ray emissions in samples of 137Cs. Barium-137m decays to the ground state by emission of photons having energy 0.6617 MeV. A total of 85.1% of 137Cs decay generates gamma ray emission in this manner. One gram of 137Cs has an activity of 3.215 terabecquerel (TBq).
Caesium-137 is not widely used for industrial radiography because it is hard to obtain a very high specific activity material with a well defined (and small) shape as caesium from used nuclear fuel contains stable caesium-133 and also long-lived caesium-135. Isotope separation is too costly compared to cheaper alternatives. Also the higher specific activity caesium sources tend to be made from very soluble caesium chloride (CsCl), as a result if a radiography source was damaged it would increase the spread of the contamination. It is possible to make water insoluble caesium sources (with various ferrocyanide compounds such as Ni2Fe(CN)6, and ammonium ferric hexacyano ferrate (AFCF), Giese salt, ferric ammonium ferrocyanide) but their specific activity will be much lower. Other chemically inert caesium compounds include caesium-aluminosilicate-glasses akin to the natural mineral pollucite. The latter has been used in demonstration of chemically stable water-insoluble forms of nuclear waste for disposal in deep geological repositories. A large emitting volume will harm the image quality in radiography. 192Ir and 60Co, are preferred for radiography, since these are chemically non-reactive metals and can be obtained with much higher specific activities by the activation of stable cobalt or iridium in high flux reactors. However, while 137Cs is a waste product produced in great quantities in nuclear fission reactors, 192Ir and 60Co are specifically produced in commercial and research reactors and their life cycle entails the destruction of the involved high-value elements. Cobalt-60 decays to stable nickel, whereas iridium-192 can decay to either stable osmium or platinum. Due to the residual radioactivity and legal hurdles, the resulting material is not commonly recovered even from "spent" radioactive sources, meaning in essence that the entire mass is "lost" for non-radioactive uses.
A 1961 experiment showed that mice dosed with 21.5 μCi/g had a 50% fatality within 30 days (implying an LD50 of 245 μg/kg). A similar experiment in 1972 showed that when dogs are subjected to a whole body burden of 3800 μCi/kg (140 MBq/kg, or approximately 44 μg/kg) of caesium-137 (and 950 to 1400 rads), they die within 33 days, while animals with half of that burden all survived for a year. Important researches have shown a remarkable concentration of 137Cs in the exocrine cells of the pancreas, which are those most affected by cancer. In 2003, in autopsies performed on 6 children dead in the polluted area near Chernobyl where they also reported a higher incidence of pancreatic tumors, Bandazhevsky found a concentration of 137Cs 40-45 times higher than in their liver, thus demonstrating that pancreatic tissue is a strong accumulator and secretor in the intestine of radioactive cesium.Accidental ingestion of caesium-137 can be treated with Prussian blue (FeIII4[FeII(CN)6]3), which binds to it chemically and reduces the biological half-life to 30 days.
As of today and for the next few hundred years or so, caesium-137 and strontium-90 continue to be the principal source of radiation in the zone of alienation around the Chernobyl nuclear power plant, and pose the greatest risk to health, owing to their approximately 30 year half-life and biological uptake. The mean contamination of caesium-137 in Germany following the Chernobyl disaster was 2000 to 4000 Bq/m2. This corresponds to a contamination of 1 mg/km2 of caesium-137, totaling about 500 grams deposited over all of Germany. In Scandinavia, some reindeer and sheep exceeded the Norwegian legal limit (3000 Bq/kg) 26 years after Chernobyl. As of 2016, the Chernobyl caesium-137 has decayed by half, but could have been locally concentrated by much larger factors.
German: Um die Mod spielen zu können muss bei der Installation folgendes beachtet werden: 1. Erstelle im Verzeichnis «Half-Life» einen Ordner mit Namen «residual_life» (Im Namen keine Leerzeichen!!) 2. Entpacke alle Dateien der zip-Datei in diesen Ordner 3. Öffne die Datei pak0.pak mit GCFScape und entpacke alle Dateien ebenfalls in den Ordner 4. Steam neustarten
Cesium-137 has a half-life of approximately 30 years. As of 2005, caesium-137 is the main source of radiation in the Exclusion Zone around the nuclear power plant. Together with caesium-134, iodine-131, and strontium-90, caesium-137 was among the isotopes distributed by the reactor explosion that posed the greatest risk to health. It is Cesium-137 that has led some reindeer and sheep in Scandinavia to exceed the Norwegian safety limit 26 years after the disaster.
Those were my favorites. I played quite a few half-life mods, but Heart of Evil and the Half-Quakes were just amazingly done. Heart of Evil for it's mirroring of Heart of Darkness and Apocalypse Now, while going completely ridiculous and throwing everything out the window and shitloads of zombies. Half-Quake for it's amazing minimalist approach, sadistic sense of humor, and amazing soundtrack.
STATSFull length fiction reviews: 0. Not a single, full-length fiction review. A full page is given over to two chick-lit titles (well, it's actually a half page with a ludicrous half-page illustration) and the Calvin and Hobbes collection gets a full gatefold spread. There's even a full page given to a poetry collection! (Gusty move, kids.) But nothing this week for the reader of serious fiction. Full length non-fiction reviews: 3.Columns: Discoveries.Also included: Letters. Now this one seems pointless - a precious half-page given over to letters. When you've got a 35 page book review, we can talk about letters. Obviously, someone wanted to show off that Dershowitz bothered to write in but c'mon people ... a little restraint? It isn't as though the world is starved of Dershowitz's words of wisdom ...
WHAT WE LIKE ...Pretty hit or miss, as it turns out ... Schickel's review of the Beatty is admirably snarky ("virtually unreadable") but goes on far too long for its own good ... The Calvin and Hobbes review scores high although we wonder if it's merely our residual love for the strip, especially given an inexplicably long digression on "Frazz" that knocks a half-point off the score ... The poetry review gets a clean "A" on principle - any time you give a full page to a German poet in translation, we're gonna thank you ... Little else, though, to be thankful for. 2b1af7f3a8