Global News | World latest News| Trending News
Newswise — The international KArlsruhe TRItium Neutrino Experiment (KATRIN) at the Karlsruhe Institute of Technology (KIT) has once again surpassed its own achievements. The latest data establish an upper limit of 0.45 eV/c2 (equivalent to 8 x 10-37 kilograms) for the neutrino mass. With this result, KATRIN, which measures neutrino mass in the laboratory using a model-independent…
FOR IMMEDIATE RELEASE Newswise — A Johns Hopkins Medicine-led analysis of medical information gathered on a diverse group of almost 250,000 people over four years has significantly clarified the link between the “exclusive” use of e-cigarettes and chronic obstructive pulmonary disease (COPD), as well as high blood pressure in a sub-group of adults 30 to…
Newswise — Osteonecrosis of the femoral head (ONFH) is a progressive condition where bone tissue dies due to disrupted blood flow, often leading to joint collapse and requiring invasive surgeries like hip replacement. Current treatments primarily focus on symptom management but fail to halt the progression of the disease. Recent studies suggest that immune dysfunction,…
Newswise — For millions of people around the world, asthma is more than just a breathing problem — it is a chronic and often debilitating condition caused by the immune system’s exaggerated response to harmless airborne particles. Traditional treatments like inhaled steroids and bronchodilators help manage symptoms but fail to address the underlying cause: the…
Newswise — Broccoli rabe (Brassica rapa subsp. sylvestris), a key component of Mediterranean diets, is celebrated for its bitter flavor and abundant antioxidants and glucosinolates. However, its short shelf-life and susceptibility to spoilage make it difficult to store and market. Conventional preservation methods often fail to maintain its nutritional integrity, while improper packaging can lead…
EMBARGOED FOR RELEASE UNTIL 4:00 P.M. ET, WEDNESDAY, APRIL 2, 2025 Newswise — MINNEAPOLIS — Cervical artery dissection is a tear in an artery in the neck that provides blood flow to the brain. Such a tear can result in blood clots that cause stroke. A new study has found almost a five-fold increase in…
Newswise — New York, NY [April 14, 2025]—A new multicenter study by researchers at the Icahn School of Medicine at Mount Sinai, in collaboration with the National Cancer Institute-funded Clinical Proteomic Tumor Analysis Consortium (CPTAC) and colleagues around the world, has discovered that the genes we are born with—known as germline genetic variants—play a powerful,…
Newswise — A new study from University of California San Diego suggests that climate trauma — such as experiencing a devastating wildfire — can have lasting effects on cognitive function. The research, which focused on survivors of the 2018 Camp Fire in Northern California, found that individuals directly exposed to the disaster had difficulty making…
Newswise — (MEMPHIS, Tenn. – April 10, 2025) Cytochrome P450 (CYP) proteins are responsible for breaking down more than 80% of all Food and Drug Administration (FDA) approved drugs, reducing their effectiveness. However, how to prevent CYPs from doing this without off-target effects has puzzled researchers until now. Scientists at St. Jude Children’s Research Hospital…
Newswise — 当两种材料接触时，其表面上的带电实体会受到轻微推动。这就是气球在皮肤上摩擦产生静电的原因。同样，流过某些表面的水也会获得或失去电荷。现在，有研究人员在《ACS Central Science》期刊上发表文章称已经利用这种现象，根据流经管道的雨状液滴进行发电。他们展示了一种新型流动模式，其产生的功率足以点亮 12 个 LED。 这项研究的通讯作者 Siowling Soh 表示：“通过垂直管道落下的水会采用特定的流动模式，也就是塞流，来产生大量的电力。这种塞流模式可以收集雨能来产生清洁和可再生的电力。” 当流水推动涡轮机时，就会发电。但水力发电仅限于水量充沛的地方，例如河流。对于流量较小且流速较慢的水，另一种选择是利用电荷分离，这是一种水在通过具有导电内表面的通道时产生电荷的现象。然而电荷分离效率极低，因为这仅限于水流过的表面。此前，科学家们曾试图通过微纳尺度通道为连续的水流提供更多表面积，从而提高其效率。但是，水不会自然通过如此微小的通道，如果采用泵送方式，则所需能量比产生的能量还要多。因此，Soh、Chi Kit Ao 及同事想要利用能让雨水通过的更大通道发电。 该团队设计了一个简单装置，使水可以通过金属针从塔底流出，将雨水大小的水滴喷入 32 厘米（12 英寸）高、2 毫米宽的垂直聚合物管的开口中。液滴与管顶正面碰撞产生了塞流：短水柱中夹杂着气阱。当水顺着管内流下时，电荷会分离。这些水随后收集在管下方的杯中。放置在管顶和杯中的电线负责收集电力。 塞流系统将管道流水 10% 以上的能量转化为电能。而且，与连续流动的水相比，塞流产生的电力要多出 5 个数量级。由于所测液滴速度比降雨速度慢得多，研究人员认为该系统可用于从落下的雨滴中收集电力。 在另一项实验中，研究人员观察到，让水同时或依次流经两根管子，产生的能量是原来的两倍。根据这些信息，他们让水流经四根管子，从而为 12 个 LED 灯连续供电 20 秒。研究人员表示，与水力发电厂相比，塞流能源可能更容易设置和维护，可以方便地用于屋顶等城市空间。 作者对新加坡教育部、新加坡科技研究局和新加坡国立大学医疗健康创新与科技研究院的资助致以最诚挚的感谢。 ### 美国化学学会 (ACS) 是一家非营利组织，成立于 1876 年，由美国国会特许成立。ACS 致力于运用化学的力量改善人民的生活。其以推动科学知识进步、赋能全球社区、捍卫科学诚信为使命。愿景是建立一个以科学为基础的世界。ACS 通过丰富的研究解决方案、同行评审期刊、科学会议、电子书籍和每周新闻期刊 Chemical & Engineering News，在促进卓越科学教育和提供化学相关信息和研究方面处于全球领先地位。ACS 期刊是被引用次数最多、最值得信赖、阅读次数最多的科学出版物之一，但 ACS 本身并不进行化学研究。作为科学信息解决方案领域的领导者，其 CAS 部门与全球创新者合作，通过整理、连接和分析全球科学知识，共同推进科学突破。ACS总部位于华盛顿特区和俄亥俄州哥伦布市。 注册记者可以订阅 EurekAlert! 上的 ACS…
