多谢邀请, 却之不恭。
俺和屁其实蛮有猿粪的。
ISBN-10 : 9781580080118
俺写过一篇散文是关于屁的。
(超导体)耳机发烧:为啥放屁会让耳机的音质突然变好?
吃饱了回来, 老乡放了一个没有声音的臭屁。
俺在听着耳机呢, 没想到不期而遇的臭屁让平时听惯了的音乐更通透, 三频更均衡了, 声场大了一圈, 感觉更宽松了。于是, 俺摘下耳机问:
“瘦子, 你是不是放了个大臭屁? ”
老乡点了点头算是无声地承认了。
俺接着问, “你说说, 为什么屁会让耳机的音质突然变好?”
瘦子沉吟半晌, 说: “屁这个东西牵涉到很多**机密。
你知道吗? 屁里面除了甲烷, 还有超导体。”
俺一下子精神振作起来,
“屁里面还有超导体? 你别欺负俺没读过书啊。你说话有没有科学根据呢?”
瘦子严肃地说: “硫化氢是无机化合物,化学式为H2S。正常是无色、易燃的酸性气体,浓度低时带恶臭,气味如臭蛋;浓度高时反而没有气味(因为高浓度的硫化氢可以麻痹嗅觉神经)。2015年,物理学者发现,硫化氢在温度203K 极度高压的环境下发生超导相变,是目前已知最高温度的超导体。”
参考文献:
Cartlidge, Edwin. Superconductivity record sparks wave of follow-up physics. Nature News. 18 August 2015 [18 August 2015].
Hack a day: Why Stinky Fart Can Make Your Headphones Sound Much More Awesome than Changing Cables
After we came back to our dorm from the McD, my old time buddy Sean cut the cheese in a stealthy fashion. I was listening to my Hi-end headphones.The unexpected odour of fart suddenly made my listening experience superb. The bass, the mid and the treble became drop dead balanced and a lot more music details were unveiled. Tremendous amount of timbres gushed to my eardrums.
This is true music, I think. This is unpresidented!!!
I took off my headphones and asked Sean,
“Hi bro, did you just let out a big fat stinky fart?”
my old time buddy blushed and nodded silently as a shy acknowledgment.
I kept going and asked,
“Tell me why your stinky fart makes my headphones sound awesome, please?”
Sean did not answer before a long break,
“Speaking of the fart, there are some state secrets involved and I am not sure if
I am at liberty to disclose. You know, besides methane, there is some superconductor in my fart.”
I almost jumped up in joy,
“Superconductor in your fart? Never heard of it! Is it even scientific?”
Sean replied with a poker face,
“Hydrogen sulfide is the chemical compound with the formula H2S. It is a colorless gas with the characteristic odor of rotten eggs. It is very poisonous, corrosive, and flammable.Being heavier than air, it tends to accumulate at the bottom of poorly ventilated spaces. Although very pungent at first, it quickly deadens the sense of smell, so victims may be unaware of its presence until it is too late. At pressures above 90 GPa (gigapascal), hydrogen sulfide becomes a metallic conductor of electricity. When cooled below a critical temperature this high-pressure phase exhibits superconductivity. The critical temperature increases with pressure, ranging from 23 K at 100 GPa to 150 K at 200 GPa. And it is the superconductor known to human with the highest critical temperature as of now.”
Reference:
Cartlidge, Edwin. Superconductivity record sparks wave of follow-up physics. Nature News. 18 August 2015 [18 August 2015].
Superconductivity record sparks wave of follow-up physics
Keywords: superconductor, superconductivity, audiophile, headphone, Hi-Fi, scientific, science, hack, fart, Hydrogen sulfide, H2S
言归正传。
放屁其实是有学问的。
屁的主要气体来源2:
人体的生理凹陷里气体积累以后瞬间释放也会发出类似屁的声音,例如人们在 ** 的时候,往复运动剧烈时,可能会听到“噗噗”的声音, 但那不是屁。
屁的质感和体积与食物有重大的关系。
当食物蛋白质含量高,屁里硫化氢、吲哚和粪臭素(也是吲哚)的含量高,屁就会有比较明显的臭味; 值得注意的是极低浓度的粪臭素是有田园花香味, 所以微量的屁如果在密闭的大空间里均匀扩散的话, 有可能最终是香的。
当食物长链淀粉含量高,如地瓜土豆类,屁里二氧化碳含量高,屁量(按摩尔计)明显增多。因为长链淀粉的碳多,二氧化碳的量明显大于硫化氢、吲哚等,当气压增大时,通过阀门(肛门括约肌)的气流流速也增大,当然机械振动的幅度也就更大。因为二氧化碳没气味,因此有“响屁不臭”的说法。
正常人每天放屁10~20次,约排出1000毫升左右(0.02~0.06摩尔)的气体。屁的气味和体积能指示消化道的健康状况。若奇臭难闻,可能有消化道出血、菌痢、阿米巴痢疾、溃疡性结肠炎、出血性小肠炎等炎症。此外,恶性肿瘤晚期,因癌肿组织糜烂,蛋白质腐败,由于细菌的作用,放出的屁也会很臭。
若无屁或少屁,并有如腹痛、腹胀、便秘、肠鸣音亢进或消失、气过水声等症状,则可能是肠梗阻。
腹部手术者,术后出现蠕动抑制,胃肠内气体和液体滞积,也会出现无屁的情况。
医师查房最见的問候語就是:
“今天你放屁了吗?”
无论是切除胆囊、胰腺、結腸、盲腸或剖腹產,术中須麻醉让腸胃暫停蠕動。但术后排氣成了观察病患能否進食的重要指標。 放屁的等待時間一般得視手术程度而定,如剖腹產、割胆囊、盲腸等小手術,通常2~3天可放屁;若是割結腸、胰腺等 “大野”,1星期内放屁都正常。放屁代表能吃東西,許多病患术后望穿秋水地痴痴地等屁來。
咀嚼口香糖不但吞咽口水和空气, 也可以刺激大腦,下達指令給胃部及大腸開始蠕動。可以促进自主神經的反射。遵医嘱术后咀嚼口香糖,可減少半天的放屁等待時間,住院時間可以缩短。提高床位周转率。喝水吃糖也有刺激腸胃蠕動效果。
其他腹部手术术后帮助放屁的措施:
1.下床走動、床上翻身;
2.腹部按摩;
3.腹部熱敷或塗薄荷油。
4. 注意纠正肠麻痹病人的电解质和酸碱失衡。
“扶正理气汤”疗效甚佳。 其处方为:太子参 15g,枳壳 9g,旋覆梗 12g,姜半夏 9g,青陈皮各 9g,广木香 9g,延胡索 15g, 谷、麦芽各 30g,蒲公英30g,水煎半小时,使成 200ml 溶液,于手后清醒时由导管注入肠道,或于术 后2~3h一次口服。经此处理,一般在术后 10 余小时即可恢复肠鸣音,1~2 天内即可排气。 另外,有人主张在胃肠道手术前晚灌肠 1 次,于手术前、后各服“扶正理气汤” (枳壳 30g,川朴 15g,生大黄 9g,广木香 15g,)或“排气汤”(青皮 9g,陈皮 9g,桃仁 9g,全当归 15g, 台乌药 15g),一般在术后5~6h 即有肠鸣音出现,术后 1~2 天排气, 不出现肠麻痹和肠胀气。
参考
http://jl.people.com.cn/n2/2018/0724/c349771-31851361.html
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俺没啥文化, 初中毕业, 大伙都知道。
“老麦, 大家都说你是笑话、论坛孤儿和神棍。”
“没错。 只有千分之0.5的读者赞同俺的观点。”
“老麦, 你的读者支持率不是千分之 0.5 , 而是万分之 0.5 。”
“您说得对! ”
俺知乎阅读总量只有 0.6亿 没跨出一小步 (n<1亿)。盐值低迷(半年了还900)希望借此长点盐值。