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美国重大宣布：对伊朗实施“经济孤立”新措施！伊朗强硬回应_我的网站

A |     　　美国宣布对伊朗实施“经济孤立”新措施。　　北京时间8月25日凌晨，美国公布多项针对伊朗经济制裁，旨在切断伊朗与全球各国的经济联系。

B |     The same technology that may power the next generation of mobile networks has been shown to increase the growth of brain cells in mice, according to a new study from Xian Jiaotong University in Beijing.,Radio waves in the terahertz frequency can transmit data at speeds up to 1 terabit (or 125 gigabytes) per second, it is a prime candidate for the next generation of mobile cell phone networks if it can be proven safe. By contrast, current 5G networks use millimeter waves that top out at 20 gigabits (2.5 gigabytes) per second.,But there may be another use for terahertz radio waves: treatment of neurological disorders like Alzheimer’s disease, autism, and Parkinson’s disease.,Science & Tech'Vicious Cycle' Between Alzheimer's Dementia and Daytime Napping Found by Scientists17 March, 19:05 GMT,The researchers exposed mice neurons in a petri dish to 100-microwatt pulse radiation, ranging from 0.3 terahertz to 3 terahertz. The result was that the exposed neurons grew at a rate of 150% compared to the control group. The length of connections also doubled in three days. Despite the accelerated growth, the brain cells appeared healthy.,The accelerated brain growth was not permanent; it slowed two days after exposure.,However, a 2009 study by the Russian Academy of Sciences showed that prolonged exposure to strong terahertz radiation had an adverse effect, increasing the temperature of brain cells, disturbing their development and causing dehydration of the cells which reduces their size and causes other damage.,But Li Xiaoli, the lead scientist of the new Beijing study, thinks that the negative effects of terahertz radiation could be avoided by limiting the strength and duration of exposure.,“The safety of terahertz radiation protocol is a top concern,” Li said. And while the health concerns of terahertz radiation remain, it could, Li believes, be used to treat neurological disorders.,“Abnormal neuron development and the resulting abnormal neural network structure can lead to the occurrence of various psychiatric and neurological diseases, such as Alzheimer’s disease, autism and Parkinson’s disease,” the study’s authors said.,The authors believe that a lower dose of terahertz radiation could increase the production and the activity of certain proteins responsible for brain cell growth, namely GluA1, GluN1, and SY-38. The researchers theorize that is because they contain hydrogen bonds that constantly vibrate at a frequency that falls in the terahertz range. The radio waves combine with the proteins and cause them to resonate in a “non-linear manner,” according to Li, which could “affect the shape of the proteins, and therefore the structure and function of neurons.”However, because proteins vary significantly from each other, only certain proteins are affected by the terahertz radiation at low frequencies. Li says more investigation is needed to learn how proteins react to different exposure intensities.,The study backs up another done at the Institute of Brain Science at Xian Jiaotong University that was published in June. That study found that terahertz exposure could make young mice more intelligent. There, scientists exposed mice to 90-milliwatt terahertz radiation for 20 minutes a day for three weeks. They observed that the exposed mice had more brain cells and were quicker at escaping mazes. However, for reasons that remain unclear, the same effect was not observed in older mice.。根据最新公告，美国对伊朗经济制裁范围扩大到航空、数字资产、黄金、航运和技术行业等5个领域，还对近60个实体、个人及船只实施了制裁。　　市场层面，国际油价大幅走低，WTI原油期货、布伦特原油期货价格均大跌超2%。黄金、比特币等持续走强，现货黄金涨超1%创近三个月新高，比特币价格一度触及8万美元。美股三大指数涨跌不一，半导体、存储、光通信概念股集体大跌。　　美国宣布：制裁　　8月25日凌晨，据新华社消息，美国财政部长贝森特24日下午召开新闻发布会，宣布美国当日发起对伊朗“经济孤立”的新一轮制裁措施，以进一步加大对伊施压。　　据美财政部外国资产控制办公室24日发布的公告，美国从当日起把对伊朗经济制裁范围扩大到航空、数字资产、黄金、航运和技术行业等5个领域。公告称，美国还将暂停多项涉伊朗的许可，涉及部分教育活动和服务、个人汇款、体育和学术交流等。此外，约60个伊朗相关实体、个人和船只被列入制裁清单，覆盖核与导弹技术、网络行动、石油贸易等。　　贝森特说，美国针对伊朗在全球的金融联系发起“猛攻”，旨在切断伊朗政府每条经济生命线，直至其完全孤立。他称：“从今天开始，财政部和其他部门将收紧制裁并封锁伊朗伊斯兰革命卫队和伊朗政府每一项潜在收入来源。”　　贝森特还称，美方不再接受所谓“灰色区域运作”，若相关国家不采取措施，美财政部将采取单方面行动。任何为伊朗洗钱的实体将被移出美元体系。

C | 美国总统特朗普正在就停止与伊朗往来的具体要求致电多方领导人。　　美媒指出，特朗普政府此次行动的核心目标，是切断伊朗石油贸易以及其他经济活动与全球金融体系之间的联系。　　伊朗强硬回应　　据伊朗总统府24日消息，伊朗总统佩泽希齐扬当天表示，美国“应改变与伊朗打交道时的言辞和做法”，依靠强权和霸凌只会使相关进程更加复杂。

D | 　　佩泽希齐扬表示，伊朗人民依靠内部团结能够应对各种压力和威胁。他说，“在地区建立持久和平与安全，并同伊斯兰国家开展互动与协作，是一项基本要求”，伊朗愿同伊斯兰国家和邻国开展多领域合作。　　佩泽希齐扬表示，伊斯兰国家加强团结和凝聚力有助于应对以色列及其他外部威胁。

E | 他同时希望巴基斯坦通过外交努力，为地区局势缓和发挥作用。　　伊朗伊斯兰议会议长卡利巴夫24日晚表示，伊朗贸易伙伴已经表态，“不会认真对待”美国相关制裁言论。

F | 他称，美国当前的经济状况并不允许其进一步收紧与其他国家的经贸关系。　　同天，伊朗最高领袖顾问穆赫贝尔表示，面对美方威胁，伊朗的回应将比以往更加坚决。　　穆赫贝尔在其社交媒体账号上发文说，美国过去47年来采取包括制裁、战争以及企图分裂伊朗在内的敌对战略，均未取得预期效果。而如今要面对的，是伊朗内部的团结及在霍尔木兹海峡的威慑能力。他说，“这一战略失败是对美方继续作出错误判断的明确警告”，伊朗的回应将比以往更加坚决。　　国际油价跳水　　在交易员权衡美国旨在孤立伊朗的制裁行动后，国际油价持续走低，10月交割的布伦特原油期货价格大跌2.4%，结算价报92.17美元/桶；10月交割的WTI原油期货价格亦收跌2.4%，报85.01美元/桶。　　美股三大指数走势分化明显，截至收盘，纳指跌0.76%，道指涨0.26%，标普500指数跌0.28%。　　大型科技股涨跌不一，Meta、亚马逊涨1.33%，微软涨0.84%，谷歌涨0.83%，苹果涨0.32%；英伟达大跌2.91%，特斯拉大跌超3%。　　存储、光通信概念股集体大跌，闪迪、希捷科技大跌超6%，美光科技、西部数据跌超5%，SK海力士ADR跌近5%；Applied Optoelectronics大跌超13%，Lumentum、Coherent跌超4%。　　资金从AI硬件板块撤出后，涌入黄金、比特币等避险资产，现货黄金涨1.05%，比特币盘中一度逼近8万美元。　　目前投资者正在为本周即将公布的英伟达财报做准备，任何显示公司增长速度放缓的迹象，都可能重新点燃市场对于科技股估值过高的担忧。　　Questar Capital Partners首席投资官Richard Reyle表示：“英伟达必须交出令人满意的业绩，以继续支撑美股走势；而美联储主席沃什则需要就利率问题提供明确指引，才能稳定市场情绪。”　　另外，市场还将关注周三公布的个人消费支出（PCE）物价指数报告，这是美联储最青睐的通胀指标。此前本月早些时候公布的消费者通胀数据表现温和，降低了加息的可能性。（文章来源：券商中国）。

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