Yuanrang
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- 現在地 Nagano, Japan
- Web http://twilog.org/Ievrem
- 自己紹介 I'm trying to write in English. A very lazy birder. フォロー、リムーブご自由にどうぞ @Ievrem@mstdn.social
2022年05月28日(土)
Kazutoshi Maruyama @sunchang00451
@watai_tioco 病院で専門性を発揮しながら頑張っている助産師さんもたくさん知っているだけに…
タグ：
posted at 21:35:06
明治用水漏水行ってみた。
すぐに解決しなさそう。
＃明治用水 ＃豊田 pic.twitter.com/bIxJejEzeL
posted at 21:33:15
愛知県豊田市の取水施設「明治用水頭首工」で大規模な漏水が発生し、農業用水の供給などに影響が出ている問題で、用水を管理する明治用水土地改良区は28日、農地への給水を30日に再開すると発表しました。
www.jiji.com/jc/article?k=2...
タグ：
posted at 20:54:11
国土交通省 中部地方整備局 広報 @mlit_chubu_koho
令和4年5月明治用水頭首工（矢作川）漏水の対応（第５報）
中部地方整備局では、東海農政局からの要請により、＃明治用水頭首工 の漏水対応支援のため、排水ポンプ車４台（排水ポンプ合計１６台）を追加で派遣しましたので、お知らせします。
www.cbr.mlit.go.jp/manage/app/haz... pic.twitter.com/JPDndvimbw
タグ： 明治用水頭首工
posted at 20:17:24
非公開
タグ：
posted at xx:xx:xx
Kazutoshi Maruyama @sunchang00451
加えて産科麻酔科医や救急医や放射線科医、時には内科医や整形外科医など、他科の力も結集して生命を守るんです。それが「周産期医療」です。
タグ：
posted at 18:55:45
Kazutoshi Maruyama @sunchang00451
もうね、助産師と産科医が対立しているなんて、数十年前の構造に寄りかかった記事なんて要らんのです。
21世紀の分娩は、助産師と産科医と新生児科医がしっかりチームを組んで、力を合わせて出産する女性と新生児の生命を守るんです。新聞社も早く時代に追いついてくださいよ。
タグ：
posted at 18:54:19
Kazutoshi Maruyama @sunchang00451
少なくとも記事を書くなら、以下の数字は知っておくべきです。
www.mhlw.go.jp/shingi/2008/11...
タグ：
posted at 18:47:49
Kazutoshi Maruyama @sunchang00451
いい加減、産み方で出産した女性を分断するのは止めませんか･･･？
帝王切開でも陣痛促進剤を使用しても器械分娩でも特に何も無い経腟分娩でも、産み方に限らず全ての女性が肯定されるべき。
#Yahooニュース
news.yahoo.co.jp/articles/92cd3...
タグ： Yahooニュース
posted at 18:46:36
大村知事「県が工事費出してもいい」 明治用水修復：中日新聞Web www.chunichi.co.jp/article/478605
初動の公表から農政局はこういったトラブル対処能力が足りないんじゃないかと話もあったが、未だに工事の手法すら決まっていない状況。
ポンプはあくまで応急処置で止血手術せずに輸血してるようなもん
タグ：
posted at 18:46:20
#豊田市 ＃明治用水
今日の明治用水の様子 pic.twitter.com/Jy8QiAGGXf
posted at 18:27:52
#さきさんの突発的ダム活
今注目のダム、明治用水頭首工
漏水で水位がざっと4~5mは下がっているかと言うところ
旧頭首工と旧導水堤がむき出しになってます pic.twitter.com/fBz83CsheZ
タグ： さきさんの突発的ダム活
posted at 17:33:25
庭いじりしてたらお客様が
(๑´∀`๑)ノｲﾗｯｼｬｲ
#ナミアゲハ #オルレア pic.twitter.com/1i6uJlLPTJ
posted at 15:35:58
因みにメガホンで叫んでた共産党の人は、どう見ても70歳代で戦災経験もなさそうｗ
しかし市議会議員選挙（わが立川市では来月）の応援で国政問題を取り上げても無意味なのに、それしか訴求できるネタがないんかいな。
twitter.com/Rogue_Monk/sta...
タグ：
posted at 13:40:10
@YahooNewsTopics @miyabi39mama 車内には子どもを見る為のミラーをつけると良いと思います。
運転中、寝ているとか何処みているとか確認することが一つの回避行動かと思います。
タグ：
posted at 09:52:43
Thread Reader App @threadreaderapp
@earphorny Hi! you can read it here: threadreaderapp.com/thread/1530225... Enjoy :) 🤖
タグ：
posted at 02:17:09
Ukraine certainly has the will to attack the Crimea Bridge. Oleksiy Danilov, Secretary of the National Security and Defense Council of Ukraine said on 21 April, "If there is an opportunity to this end, we will definitely do it." But could it do it? /31
タグ：
posted at 01:49:49
* the Plavnik anti-sabotage system and sonars to monitor the waters around the bridge
* combat swimmers of the Black Sea Fleet and the special naval brigade of the National Guard, and allegedly combat dolphins.
So, quite a formidable set of defences (on paper at least). /30
タグ：
posted at 01:42:56
These include:
* a Cosmos-K spy satellite monitoring the bridge
* fighter and anti-submarine air patrols
* S-400 and Pantsir-S1 air defences plus MANPADs
* Bal and Bastion anti-shipping missiles
* over-the-horizon radar stations
* anti-sabotage boats operated by Rosgvardia /29 pic.twitter.com/GMgXaVN8wl
タグ：
posted at 01:42:56
When the bridge was built, Russia assigned it the highest priority for defence - on a par with nuclear power stations. According to Russia's Komsomolskaya Pravda, the bridge is protected by thickly layered defences on the ground, air and sea. /28
タグ：
posted at 01:42:55
Cutting the bridge would be a big propaganda and potential strategic boost for Ukraine, as it could allow Crimea to be re-bottlenecked. But Russia is very well aware of this risk and has built extensive defences around the strait. /27
タグ：
posted at 01:42:54
Building them was strategically essential for Russia. Crimea's land connections were cut off after 2014, leaving it reliant on a low-capacity ferry link across the Kerch Strait. The bridge enables military equipment to cross rapidly and easily. /26
pic.twitter.com/4lJPfZ6mDw
タグ：
posted at 01:42:54
The bridge is actually two structures: parallel road and rail bridges, opened in 2018 and 2019 respectively. At 19 km (11.8 mi), they're Europe's longest bridges. They're literally concrete expressions of Russia's 2014 annexation of Crimea. /25 pic.twitter.com/N0hhrM3bAu
タグ：
posted at 01:42:53
Back finally to the Crimea bridge. Let's look first at why it's important and how Russia defends it. /24
タグ：
posted at 01:42:52
It also shows the limitations of attacking bridges, even with precision munitions. If a munition only hits the roadway, it will likely leave a hole which could be repaired. The only really reliable method is to hit the abutments or pillars and cause a span to drop. /22
タグ：
posted at 01:42:51
Since then, Russia has hit the Pidyomnyy Bridge several more times. Its status is currently unclear, as the Ukrainian government seems to have thrown a blanket of secrecy over it - no more photos have emerged. But it's an expensive and inefficient method of attack. /21
タグ：
posted at 01:42:51
This bridge over the Dniester estuary has been attacked repeatedly by Russian cruise missiles. Photos taken after one of the first strikes showed only limited damage - a section of destroyed roadway but an apparently usable railway track and undamaged second roadway. /20 pic.twitter.com/qzOffCQwpw
タグ：
posted at 01:37:54
Cruise missiles' warheads, however, are smaller than many aerial bombs - 400-500 kg for Kalibrs. So they would need a lucky hit to be able to bring down a large bridge in one shot. A good example of this is the Pidyomnyy Bridge in Ukraine's far south-west. /19 pic.twitter.com/CiWCNty2yt
タグ：
posted at 01:37:53
Ukraine also has the now-famous R-360 Neptune missiles that sank the Russian ship Moskva, but they're not land attack weapons, they have a relatively short range (280 km) and a small (150 kg) warhead, and likely only exist in very small numbers. /18
pic.twitter.com/qkDdaEk95f
タグ：
posted at 01:37:52
They also both have OTR-21 Tochka ballistic missiles, which are short-range weapons - 185 km (115 mi) and an accuracy of between 70-150 m, depending on model. But this is too inaccurate to successfully target a bridge. /17
pic.twitter.com/lI6B5wc5eC
タグ：
posted at 01:37:51
Both sides operate Iskander ballistic missiles with a range of 400-500 km, 480-700 kg warheads and a claimed 5 m accuracy for newer Russian versions - likely good enough to be able to hit bridges. Ukrainian versions' accuracy is likely less good. /16 pic.twitter.com/23CI5YheH5
タグ：
posted at 01:37:51
Russia has 3M-54 Kalibr and older Kh-101 cruise missiles, as well as anti-shipping missiles which could be used against land targets. They range up to 3,000 km and are accurate enough to hit bridges, but are scarce, expensive and hard to replace. /15
pic.twitter.com/hlH8XgA92z
タグ：
posted at 01:37:50
So air power works, as long as you can reach the target. But very unusually, in the Ukraine war neither side has established air dominance and neither can carry out long-range bombing raids. However, both have the option of using long-range missiles instead. /14
タグ：
posted at 01:37:50
The first Gulf War in 1991 saw the US-led Coalition attacking many Iraqi bridges using 2,000 lb bombs. They adopted a system of attacking abutments with GBU-24 LGBs before knocking out the middle support sections with GBU-15 manually guided bombs. /13
タグ：
posted at 01:37:49
Matters didn't improve much until the Vietnam War. The US unsuccessfully targeted the Thanh Hóa Bridge with 873 sorties, costing the lives of at least 100 American pilots. It was finally brought down by some of the first laser-guided bombs (LGBs). /12 pic.twitter.com/3y7YuuMOGS
タグ：
posted at 01:37:48
Elsewhere, the Allies had success destroying bridges over the Seine and other rivers through massive bombing raids, though as usual with non-guided weapons these involved a lot of sorties, a lot of misses, and a lot of aircraft losses. /11 pic.twitter.com/Jlu4RhHWcC
タグ：
posted at 01:37:29
The 22,000 lb (10,000 kg) Grand Slam bomb was designed to explode deep underground and create a giant crater or camouflet into which structures, like bridge pillars, would collapse. It was successful but expensive to make and difficult to use. /10 pic.twitter.com/3Q8uAmdSXM
タグ：
posted at 01:33:21
If you don't control the ground, stand-off weapons - aerial bombs or missiles - are alternatives. But these raise problems of their own. How do you accurately target a relatively narrow target like a bridge? The UK in WW2 used brute force - the heaviest bomb ever made. /9 pic.twitter.com/TV6RxZ4dYR
タグ：
posted at 01:33:04
But this isn't foolproof, as the Germans found when their attempt to blow the Remagen bridge failed. Even a badly damaged bridge can still be used, though this one in Sumy would honestly give me nightmares. /8 pic.twitter.com/yYKo3JnoiS
タグ：
posted at 01:33:03
The story of the Remagen bridge highlights another issue: destroying a bridge (and keeping it destroyed) isn't straightforward. If you control the bridge, you can try demolishing it with explosives - this video demonstrates how. /7
pic.twitter.com/DnwpO1S5AU
タグ：
posted at 01:33:02
Confusingly, both sides may switch between targeting and defending the same bridges as the conflict develops. In WW2, the Allies bombed Germany's Rhine bridges to hinder the Germans - then fought off German attacks to defend the Remagen bridge when they captured it. /6 pic.twitter.com/775qHOvZwm
タグ：
posted at 01:33:01
Third, you may wish to target bridges deep in the enemy's rear areas to block key transport routes, as Russia has done quite extensively - in this case in the city of Dnipro. /5 pic.twitter.com/VVD1OL1pGL
タグ：
posted at 01:33:00
Second, you might want to take tactical advantage of an enemy crossing a bridge that you've targeted for destruction. Bonus points if you manage to bring the bridge down with enemy units on it. /4 pic.twitter.com/mjOHIs1Q4b
タグ：
posted at 01:32:59
Both sides have been responsible - including Ukraine targeting its own bridges. But why destroy bridges? First, you might want to block enemy movements, as Ukraine did when it blew up a railway bridge connecting it to Russian-occupied Transnistria. /3 pic.twitter.com/fYl6sikopt
タグ：
posted at 01:32:58
Bridges have been prime targets since the start of the Ukraine war. Ukraine says more than 300 of its bridges and overpasses have been destroyed since the start of the war. /2 pic.twitter.com/6cM7dEK29f
タグ：
posted at 01:32:58
Could Ukraine destroy the longest bridge in Europe - Russia's link to Crimea - and does Joe Biden hold the key to helping it do so? A 🧵 on why this matters, and an exploration of the mechanics of bridge-busting. /1 pic.twitter.com/pxHJsxExko
タグ：
posted at 01:32:57
