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襄阳宜城市妇幼保健院中医院妇科挂号Koalas are one of Australia’s most iconic animals and are used to having their photos taken by visitors to their zoo enclosure.考拉是澳大利亚的标志性动物之一,游客常常给动物园围栏里的考拉拍照。But now the koalas have taken things into their own paws.但是现在,考拉可以自己拍照了。The iconic Aussie creatures also proved to be talented #39;photographers#39;.事实明,这种澳洲标志性的动物还是杰出的“摄影师”。Koalas who are residents of the WILD LIFE Sydney Zoo, have snapped pictures of themselves while munching on eucalyptus leaves in their enclosure.悉尼野生动物园里的考拉在自己的领地里一边咀嚼着桉树叶,一边给自己拍上几张萌照。The koalas used the Sony QX100, which has a lens on a movable tripod claw, which connects to your mobile phone via Wi-Fi.考拉的自拍神器是索尼QX100相机,这部相机的镜头位于一个爪状的移动三脚架上面,通过Wi-Fi和手机连接。The Sony QX Lens-Style camera can be mounted on different objects, including a tree, and sends the photos straight to a mobile phone.索尼QX100相机的镜头可以被安放在不同的物体上,包括树上,而且能把照片直接传到手机上。A motion sensor lets the camera know when the subject is within range and triggers the camera to take three photos.相机上的传感器识别目标进入特定区域后,会触发相机开始三连拍。This meant the koalas were able to ‘take’ the photos themselves when they moved in front of the lens, which was positioned in one of the trees in their enclosure.这意味着考拉在靠近镜头时可以给自己拍照了,镜头被放置在它们领地中的一颗树上。Koalas showed that they are far from camera-shy. They seemed enchanted by the cameras and pulled cheeky poses in front of them.考拉们展示出它们一点也不害怕镜头。它们好像很着迷于镜头,在镜头前面肆无忌惮地摆姿势拍照。Besides, it#39;s not just humans who enjoy a cheeky photobomb.而且,不仅仅是人类喜欢在别人的照片里恶搞乱入。 /201404/289923襄阳哪家医院牛皮癣检查好 襄阳一院是正规医院?

襄樊铁路医院治疗早孕多少钱 If you’re trying to commit a set of items to memory, you may want to give your brain a bit of caffeine. But how you time it matters, finds a new study out today in Nature Neuroscience. The researchers found that giving people caffeine after they memorized a series of pictures significantly boosted their ability to remember the subtler details, compared to people who’d been given dummy pills. Before you down a six-shot Americano, though, be aware that there’s a sweet spot: A 200-milligram dose of caffeine – about the amount in a large cup of coffee – was the only one to do the trick.如果你想记住什么事情,你或许该给自己的大脑一些咖啡因。但是你在何时给它咖啡因相当重要,这是《自然神经科学》(Nature Neuroscience)在1月13日发布的一份新研究报告中所发现的。研究者们发现,在人们记住一系列图片之后给予他们咖啡因(相较于给予安慰剂的对比组),能够极大地提高记住更细微细节的能力。不过,在你狂灌六杯美式咖啡之前,请先记住最有效剂量是:200毫克的咖啡因——大概是一大杯咖啡中的咖啡因含量——才能起到这个效果。The researchers had participants – who were not regular caffeine consumers – try to memorize a series of pictures. Afterwards, they were given a caffeine pill or a placebo (dummy) pill. Twenty-four hours later, when the caffeine was fully out of their systems, they were asked to determine which pictures in a new set had also been shown the day before. The tricky part was that some of the new items were similar but not identical to the old ones, meaning that the participants had to recall the initial items in some amount of detail.研究者们让不经常摄入咖啡因的受试者尝试记住一系列图片。然后给予他们咖啡因药丸或安慰剂。24小时之后,咖啡因完全排出体外,这些受试者被要求在一套新的图片中挑出哪些图片在前一天出现过。这里容易出错的地方在于,有些图片只是和之前的图片相类似,但并不完全一样,这意味着受试者必须要回忆起原来那些图片上的某些细节。It turned out that people in the caffeine group were much better than their non-caffeinated counterparts at recognizing the new items that were similar but not the same as old ones. And this is cool because it suggests that caffeine may influence how the brain consolidates memories.结果明,在辨识和旧有图片类似却又不尽相同的图片方面,咖啡因组的表现比对照组的表现要好得多。这个结果很酷,因为它表明,咖啡因能影响大脑巩固记忆的方式。“We’ve always known that caffeine has cognitive-enhancing effects, ” said study author Michael Yassa, “but its particular effects on strengthening memories and making them resistant to forgetting has never been examined in detail in humans. We report for the first time a specific effect of caffeine on reducing forgetting over 24 hours.”“我们一直都知道,咖啡因有提高认知力的效果,”该研究报告的作者迈克尔·亚萨(Michael Yassa)说,“但其对加强、防止遗忘的特定效果却从未在人类身上加以详细地验过。我们是首次对24小时内咖啡因对减少遗忘所产生的特定效果进行汇报。”A key aspect was the caffeine was administered after the memory task, rather than before it, which ensures that other caffeine-related factors, like attention, anxiety or energy are not what’s driving the phenomenon.重要的一点是,咖啡因是在任务之后给予的,而不是之前,这确保了其他和咖啡因相关的因素,如注意力、焦虑或能量等,并不是造成这种现象的原因。Yassa added that what’s really interesting is that the study focuses on a more detailed form of memory. “If we used a standard recognition memory task without these tricky similar items, we would have found no effect of caffeine, ” he said. “However, using these items requires the brain to make a more difficult discrimination — what we call pattern separation, which seems to be the process that is enhanced by caffeine in our case.”亚萨补充表示,真正有趣的是,这项研究专注于的一个更为细枝末节的形式。“如果我们采用一种标准辨识任务,没有这些个容易混淆的相似点,我们可能发现的结果是,咖啡因没有效果,”他说,“而采用这些相似图片之后,就要求大脑做出更困难的辨识——这就是我们所称之为的‘模式分辨’,在我们的研究中,咖啡因似乎就是加强了这一过程。”Now the and his team just have to unravel why the caffeine effect occurs at all, and which brain mechanisms are responsible. “We can use brain-imaging techniques to address these questions, ” said Yassa. “We also know that caffeine is associated with healthy longevity and may have some protective effects from cognitive decline like Alzheimer’s disease. These are certainly important questions for the future.”现在,亚萨和他的团队只需阐述为什么会产生这种咖啡因效果,以及哪部分大脑机制对其负责的问题。“我们可以使用大脑成像技术来解决这些问题,”亚萨说,“我们还知道,咖啡因和长寿联系在一起,也可能对老年痴呆症等认知力衰退疾病具有防护作用。这些都是未来相当重要的问题。”You can do an informal caffeine experiment on yourself, but again, remember that it’s the 200 mg dose – the equivalent of about two small cups or one tall Starbucks你可以自己尝试一下非正式的咖啡因实验,不过请记住,剂量是200毫克——相当于两小杯咖啡或是一杯星巴克中杯咖啡——这一剂量的效果似乎是最大的。更大的剂量很有可能阻碍学习能力,因为会带来各种副作用(很难知道你到底是处于不安还是焦虑状态)。这项研究无疑是激动人心的,因为它指出了适量咖啡因有助于大脑健康的另一个方面——不仅仅是长期的,更是日常的。 /201402/275700襄阳南漳县人民中心医院男科襄阳南漳县人民中心医院做孕检怎么样

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