传统刺青都弱爆了！3D刺青,让你忍不住一直看下去！
在掌握先进的刺青技术前提下，刺青艺术家们可以在客户的皮肤上创造令人惊叹的刺青，有时后甚至能产生比照片更为逼真的幻觉。下面的刺青都是一些巧妙的刺青，当中有些刺青似乎给人一种皮肤扭转和弯曲的错觉。你拥有或见过这种令人产生错觉的刺青吗？
罗克韦尔 CompactLogix 通过 EtherNet/IP 添加 Point I/O
创建一个 CompactLogix 项目 添加 EtherNet/IP 网络的 Point I/O步骤:1. 启动 RSLogix50002. 选择 File->New创建一个新的项目。
《科学》（20220805出版）一周论文导读
Abstract:Pathogenic variants in genes that cause dilated cardiomyopathy and arrhythmogenic cardiomyopathy convey high risks for the development of heart failure through unknown mechanisms. Using single-nucleus RNA sequencing， we characterized the transcriptome of 880，000 nuclei from 18 control and 61 failing， nonischemic human hearts with pathogenic variants in DCM and ACM genes or idiopathic disease. We performed genotype-stratified analyses of the ventricular cell lineages and transcriptional states. The resultant DCM and ACM ventricular cell atlas demonstrated distinct right and left ventricular responses， highlighting genotype-associated pathways， intercellular interactions， and differential gene expression at single-cell resolution. Together， these data illuminate both shared and distinct cellular and molecular architectures of human heart failure and suggest candidate therapeutic targets.
《自然》（20211223出版）一周论文导读
Magnetars are strongly magnetized， isolated neutron stars with magnetic fields up to around 1015 gauss， luminosities of approximately 1031-1036 ergs per second and rotation periods of about 0.3–12.0 s. Very energetic giant flares from galactic magnetars have been detected in hard X-rays and soft γ-rays， and only one has been detected from outside our galaxy. During such giant flares， quasi-periodic oscillations with low and high frequencies have been observed， but their statistical significance has been questioned. High-frequency QPOs have been seen only during the tail phase of the flare. Here we report the observation of two broad QPOs at approximately 2，132 hertz and 4，250 hertz in the main peak of a giant γ-ray flare in the direction of the NGC 253 galaxy， disappearing after 3.5 milliseconds. The flare was detected on 15 April 2020 by the Atmosphere–Space Interactions Monitor instrument aboard the International Space Station， which was the only instrument that recorded the main burst phase in the full energy range without suffering from saturation effects such as deadtime and pile-up. Along with sudden spectral variations， these extremely high-frequency oscillations in the burst peak are a crucial component that will aid our understanding of magnetar giant flares.
锂硫电池与镁硫电池–内在差异与实践角度
继锂硫电池之后，人们发现镁硫电池也具有更高的理论比能量，并且由廉价和更环保的电极材料组成。然而，与锂硫电池相比，目前的镁硫电池存在着镁阳极过电位较高、硫阴极材料利用率和可逆性较低、对电解质需求过大等问题。
聚焦｜家电行业履约《蒙特利尔议定书》产业篇之冰箱冷柜：砥砺奋进，成果卓著
该研究提出，选择R600a为制冷剂替代R12，选择环戊烷为发泡剂替代CFC-11 ，同时明确企业可根据自身市场、技术条件等选择技术路线。
《自然》（20220526出版）一周论文导读
Abstract:Before the Perseverance rover landing， the acoustic environment of Mars was unknown. Models predicted that: atmospheric turbulence changes at centimetre scales or smaller at the point where molecular viscosity converts kinetic energy into heat， the speed of sound varies at the surface with frequency and high-frequency waves are strongly attenuated with distance in CO2. However， theoretical models were uncertain because of a lack of experimental data at low pressure and the difficulty to characterize turbulence or attenuation in a closed environment. Here， using Perseverance microphone recordings， we present the first characterization of the acoustic environment on Mars and pressure fluctuations in the audible range and beyond， from 20 Hz to 50 kHz. We find that atmospheric sounds extend measurements of pressure variations down to 1，000 times smaller scales than ever observed before， showing a dissipative regime extending over five orders of magnitude in energy. Using point sources of sound ， we highlight two distinct values for the speed of sound that are about 10 m s−1 apart below and above 240 Hz， a unique characteristic of low-pressure CO2-dominated atmosphere. We also provide the acoustic attenuation with distance above 2 kHz， allowing us to explain the large contribution of the CO2 vibrational relaxation in the audible range. These results establish a ground truth for the modelling of acoustic processes， which is critical for studies in atmospheres such as those of Mars and Venus.
苹果 AI 眼镜明年 WWDC 见，但这次「隐私」不好做
围绕这副智能眼镜，苹果内部其实一直在经历一场「To be， or not to be」式的权衡，并在三种截然不同的技术路线之间摇摆。
文坛底蕴，璀璨山西
经常听到有人说，百年看上海,千年看北京,三千年看山西,五千年看山西。告诉我们一个地方的文化底蕴不仅需要有强大的经济基石，还需要有悠久的历史底蕴托底。而所谓的历史底蕴则包括政治，经济，文化，宗教，民族融合，人文活动等等。