發(fā)現(xiàn)大腦中有個引路人
Find a guide in your brain
人的大腦就像一塊高級集成電路，那數(shù)以千億計的神經(jīng)纖維怎樣才能有序排列，各行其道？最近，中科院上海生命科學(xué)研究院神經(jīng)科學(xué)研究所的博士袁小兵等人在大腦中發(fā)現(xiàn)一個“引路人”，它能指引神經(jīng)纖維沿著正確的路線“前進”，不致走上“岔道”。
The human brain is like a high-level integrated circuit. How can hundreds of billions of nerve fibers be arranged in an orderly way? Recently, Yuan Xiaobing, Ph.D. of Neuroscience Research Institute of Shanghai Institute of life sciences, Chinese Academy of Sciences, and others found a "guide" in the brain, which can guide the nerve fibers to "advance" along the right route without "turning off".
這個“引路人”叫Rho小鳥苷三磷酸酶，“駐扎”在神經(jīng)細胞內(nèi)，能夠偵察神經(jīng)纖維生長的“路況”，比如哪條路是“綠燈”，哪條路是“紅燈”，并傳遞這種路況信息，指導(dǎo)神經(jīng)纖維的生長方向。
The "guide" is called Rho biradine triphosphatase, which is stationed in nerve cells and can detect the "road conditions" of nerve fiber growth, such as which road is the "green light" and which is the "red light", and transmit this road information to guide the growth direction of nerve fiber.
人類的情感、學(xué)習(xí)、思維等活動都有賴于設(shè)計精密的神經(jīng)網(wǎng)絡(luò)的工作。因此，神經(jīng)纖維導(dǎo)向機制已成為腦科學(xué)的研究熱點，它不僅有助于揭示神經(jīng)發(fā)育的奧秘，還能對神經(jīng)損傷再生的研究提供理論借鑒，為開發(fā)和研制有利于神經(jīng)再生的藥物提供新思路。
Human emotion, learning, thinking and other activities all depend on the work of designing precise neural network. Therefore, the mechanism of nerve fiber guidance has become a research hotspot in brain science. It not only helps to reveal the mystery of nerve development, but also provides a theoretical reference for the study of nerve injury and regeneration, and provides a new idea for the development and development of drugs conducive to nerve regeneration.
巨型圓環(huán)繞銀河
Giant rings around the Milky way
近來，天文學(xué)家觀測到一個由幾億乃至幾十億顆恒星組成的環(huán)緩慢圍繞銀河系旋轉(zhuǎn)。這一新發(fā)現(xiàn)為銀河系產(chǎn)生于大爆炸的觀點提供了新的證據(jù)。
Recently, astronomers have observed a ring of billions or even billions of stars slowly circling the Milky way. This new discovery provides new evidence for the idea that the galaxy was born in the big bang.
目前看到的這個環(huán)還不完整，科學(xué)家將繼續(xù)尋找其他部分，并研究其中恒星的溫度、亮度、速度等。目前圓環(huán)的成因還不清楚，有科學(xué)家認為，其中的一些恒星有可能誕生于銀河系內(nèi)部，在漫長的年代里運行到了外緣；也有可能圓環(huán)是銀河系附近一個小星系的殘骸，該星系在銀河系引力作用下被吞并。研究這個圓環(huán)的起源，有助于了解星系的演化過程。
At present, this ring is not complete. Scientists will continue to look for other parts and study the temperature, brightness and speed of stars. At present, the cause of the ring is not clear. Some scientists believe that some of the stars may have been born in the inner part of the Milky way and moved to the outer edge in a long period of time. It is also possible that the ring is the remains of a small galaxy near the Milky way, which is swallowed by the gravitation of the Milky way. Studying the origin of this ring will help us to understand the evolution of galaxies.
新概念數(shù)碼手鐲
New concept digital Bracelet
我們在動畫片里看到圣斗士、太空人等身上都穿戴有特殊的裝置，一抬手腕就可發(fā)射激光，或把手腕湊近嘴邊即可通話，非?？帷?/p>
We can see in the cartoon that saints, astronauts and so on are all wearing special devices. Once the wrist is raised, the laser can be fired, or the wrist can be close to the mouth to talk, which is very cool.
現(xiàn)在美國ＴＲＩＵＭ公司設(shè)計了一款類似的穿戴式通訊手鐲。手鐲上裝有通訊及影像傳輸功能，顯示屏位于手背上的那一部分，手腕右側(cè)還安裝了一個微型攝像頭，用戶可以在觀看影像的同時直接打開麥克風(fēng)通話。戴上它你也能像圣斗士一樣威風(fēng)。
Now, trim company of the United States has designed a similar wearable communication bracelet. The bracelet is equipped with communication and image transmission functions. The display is located in the part on the back of the bracelet. A micro camera is also installed on the right side of the wrist. Users can directly turn on the microphone to talk while watching the image. You can wear it like a saint fighter.
