The Definitive Guide to 安全套
The Definitive Guide to 安全套
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Condoms can crack, tear or slip off, exposing you to a different man or woman’s bodily fluids. If this transpires, you have a better danger of the STD or unwanted pregnancy. Other prospective difficulties contain:
男用避孕套戴法示圖 男人條㞗要扯咗旗先至可以戴避孕套。 女用避孕套[編輯]
确保安全套能够在没有额外润滑的情况下使用是科学家们关注的另一个挑战。美国波士顿大学的一组研究人员开发出了一种涂在安全套上的涂料，可以使安全套具有自润滑功能。
如今的避孕套的产品多为天然乳胶材质。天然乳胶有五千至七万纳米的自然裂缝，因为人类精子的前端的直径约为五千纳米，所以可以有效地阻止精子进入女性的阴道内，起到避孕的效果。但是一些传染性的性病的病毒的直径比天然乳胶的自然裂缝要小的多，比如艾滋病病毒的直径仅为一百二十纳米，而乙肝病毒中的大球形颗粒的直径就更小了，仅为四十二纳米。由此我们可以看出，因为导致性病传播的病毒体积小于天然乳胶的自然裂缝，所以即使我们在性行为过程中使用了避孕套，仍然有一定的几率患上性病。
Condoms produced from sheep intestines, labeled "lambskin", can also be offered. Although These are typically successful as being a contraceptive by blocking sperm, scientific studies have discovered that they're much less efficient than latex in stopping the transmission of sexually transmitted bacterial infections because of pores in the material.
脂溶性润滑剂（主要是含凡士林的产品）会和橡胶发生反应，造成安全套破损。
虽然这是一种相当不寻常的性病，但却因此而产生了一项今天我们相当熟悉的创新技术：安全套。米诺斯国王是人类有记录以来第一个使用安全套的人。
不过另一组澳大利亚科学家希望用一种叫做“坚硬水凝胶”的新材料来取代乳胶。大多数水凝胶（一种亲水的三维网络结构凝胶）物理特性是柔软湿滑，但由澳大利亚斯威本科技大学和伍伦贡大学的研究人员所研发的水凝胶像橡胶一样坚固，有弹性。
世卫组织数据 仪表板 新冠肺炎疫情仪表板 亮点 关于世卫组织
传统避孕套存在一定安全问题。不少研究表明，传统的天然乳胶避孕套对病菌有一定的阻隔作用，但有效性并非百分之百，所以在使用安全套避孕的过程中，也要防止病菌滋生。
From the a long time following Entire world War I, there remained social and lawful road blocks to condom use through the U.S. and Europe.[104]: 208–10 Founding father of psychoanalysis Sigmund Freud opposed all methods of delivery Manage simply because their failure prices ended up way too superior. Freud was Primarily opposed to the condom due to the fact he assumed it cut down on sexual enjoyment.
In the course of World War I, the U.S. military services was the only one which didn't boost condom use. Posters including these ended up intended to boost abstinence. Beginning in the 2nd 50 % on the nineteenth century, American charges of sexually transmitted bacterial infections skyrocketed. Results in cited by historians incorporate the consequences in the American Civil War and the ignorance of prevention procedures promoted via the Comstock regulations.[104]: 137–eight, 159 To struggle the escalating epidemic, sex instruction courses were being released to general public educational institutions for The very first time, educating about venereal disorders and how they ended up transmitted.
使用安全套时，身体润滑剂（也称为润滑剂）可降低安全套破裂、滑落或脱落的可能性，从而加强了对意外怀孕和大多数性传播感染（包括艾滋病毒）的预防。建议使用食用油、黄油和护手霜等水基或硅基润滑剂，因为其他类型的润滑剂可能导致安全套破裂。
Have you been aiming to insert a little bit spice or style in your intercourse lifestyle? Then we recommend these Durex condoms that are available tropical flavors and vibrant 避孕套 colours, which makes it an exciting and pleasurable expertise, particularly if used all through oral intercourse. A range of flavors are A part of the pack, like apple, orange, strawberry, and banana.