性生活感到不够 - 巢内网科普|“2023年免费下载日批 软件:一款改变你世界的...
那个早晨，王芳走出了这个陪伴了她四年的空间，她走向了自己的新生活。而陈伟则留在原地，镇定地喝着王芳为他留下的最后一杯茶。他没有挽留，他尊重王芳的选择，就如同他尊重生活中所有美好且不期而遇的相遇。
2024年12月23日，全球最昂贵的轿车揭晓！售价居高位的豪车为何备受追捧...2024-01-07 15:38·SKY天空eRDo全球最昂贵的轿车揭晓！售价居高位的豪车为何备受追捧？最新数据显示，2024年，全球最昂贵的十款轿车中，价格均达到惊人的数百万，令人咋舌。这些车辆不仅诠释了制造商对品质和工艺的极致追求，更凸显了世界各地富豪对奢华与品位的追求。究竟是什么让这些豪车备受瞩目？值得我们深入探讨。让我们一起走进这个华丽的汽车世界，看看这些超级豪华轿车的独特之处及引人瞩目的价格背后，到底隐藏着怎样的故事。我们追溯调查时间线至最贵列队中的尾部，奥迪A8L以75万～195万的售价位列第十名。奥迪品牌一直以其卓越的工艺和高端的配置享誉全球。其A8L款式更是以其奢华的内饰和出色的性能受到广大车迷的追捧。接下来，是宝马840，价格较之稍高，售价在97万～336万之间。宝马一直以其动感的外观和卓越的驾驶性能而著称，840款式的上市更是为宝马品牌再添了一抹豪华。走着时光，进入第六名：梅赛德斯奔驰5580，价格从248万起。梅赛德斯奔驰一直是奢华轿车的代名词，而5580款式更是以其极致的舒适性和出色的性能跻身榜单。接下来登场的是威名赫赫的宾利飞驰，价格则位于279万～377万之间，这一品牌一直以豪华与气派著称。再往前迈进，我们见到的是梅赛德斯奔驰5680，售价介于330万～683万。其强劲的动力系统和豪华的内饰使其备受瞩目。继而，我们触及销售价格达到600万起的红旗L5。红旗品牌一向承载着中国汽车工业的艰辛历史，而L5的推出则凸显了中国汽车工业的崛起与发展。而接下来的劳斯莱斯幻影，价格位于847万～986万之间，更是一直以来富豪们追逐的对象。无疑最受瞩目的要属迈巴赫625，此款车型的售价范围在530万～2550万。迈巴赫一向以其无与伦比的豪华水准和高端配置享誉全球。其品牌代表了对奢侈生活方式的追求，也展现了拥有者高贵品味和财富实力的象征。不难发现，这些高价位的轿车无一不是工艺与品质的结晶，每一款车型都凝聚了制造商的匠心和技术力量，满足了世界各地富豪对奢华、品质以及尊贵身份的追求。豪车的高价是否意味着高品质，和内心真正追求相符吗？豪车是否应该被定义为生活品质的象征？且让我们畅想这通往奢华生活的旅途中，唯美得端坐其中的岁月。那么，这让我们想到，身价昂贵的豪车背后到底隐藏着怎样的故事？是一个奢华的生活方式的象征？还是只是外在的炫耀？或者更多内在的追求？让我们一起探讨并留下你的评论吧。
性生活感到不够 - 巢内网科普|“2023年免费下载日批 软件:一款改变你世界的...
哪吒尝这款车对于哪吒这家车企来说这款车大概率就是一车定生死的那一锤子买卖毕竟在当前哪吒础驰础、哪吒鲍被比亚迪王朝家族布下重兵、重重绞杀的当下
欧洲天然气期货直线暴拉15% 挪威那边又出幺蛾子了《科学》（20210730出版）一周论文导读2021-08-01 17:07·科学网编译 | 李言Science, 30 JULY 2021, VOL 373, ISSUE 6554《科学》2021年7月30日，第373卷，6554期物理学PhysicsQubit spin ice量子自旋冰▲ 作者：Andrew D. King, Cristiano Nisoli, Edward D. Dahl, Gabriel Poulin-Lamarre et al.▲ 链接：https://science.sciencemag.org/content/373/6554/576▲ 摘要人工自旋冰是一种可设计的受挫自旋系统，其几何结构和拓扑结构的微调使得在组成层面上设计和表征奇异的涌现成为可能。在此，我们报告在超导量子位点阵中的自旋冰的实现。与传统的人工自旋冰不同，我们的系统受量子波动和热波动的影响。基态经典地由冰规则描述，我们实现了对导致库仑相的脆弱简并点的控制。固定单个自旋的能力使我们能够证明高斯定律在二维中出现的有效单极子。所展示的量子位控制为未来对受拓扑保护的人工量子自旋液体的潜在研究奠定了基础。▲ AbstractArtificial spin ices are frustrated spin systems that can be engineered, in which fine tuning of geometry and topology has allowed the design and characterization of exotic emergent phenomena at the constituent level. Here, we report a realization of spin ice in a lattice of superconducting qubits. Unlike conventional artificial spin ice, our system is disordered by both quantum and thermal fluctuations. The ground state is classically described by the ice rule, and we achieved control over a fragile degeneracy point, leading to a Coulomb phase. The ability to pin individual spins allows us to demonstrate Gauss’s law for emergent effective monopoles in two dimensions. The demonstrated qubit control lays the groundwork for potential future study of topologically protected artificial quantum spin liquids.生命科学Life ScienceHorizontally transmitted parasitoid killing factor shapes insect defense to parasitoids水平传播的寄生蜂致死因子促成昆虫对寄生蜂的防御▲ 作者：Laila Gasmi, Edyta Sieminska, Shohei Okuno, Rie Ohta, Cathy Coutu et al.▲ 链接：https://science.sciencemag.org/content/373/6554/535▲ 摘要膜翅目寄生蜂和昆虫病毒共享同一昆虫宿主之间存在界间竞争。此前，有研究假定寄生性幼虫随受感染的寄主死亡或因争夺寄主资源而死亡。在此，我们描述了一个基因家族——拟寄生物杀死因子（pkf）——它编码的蛋白质对小腹茧蜂亚科的拟寄生物有毒，并决定了寄生是否成功。Pkfs在几个昆虫致病DNA病毒科和一些鳞翅目基因组中被发现。我们提供的证据表明，在昆虫痘病毒、囊泡病毒、杆状病毒和鳞翅目昆虫中发现的PKFs通过诱导易感寄生蜂细胞凋亡的机制，对内寄生虫具有等效和特异的毒性。这突出了寄生蜂、病毒和它们的昆虫宿主之间的进化军备竞赛。▲ AbstractInterkingdom competition occurs between hymenopteran parasitoids and insect viruses sharing the same insect hosts. It has been assumed that parasitoid larvae die with the death of the infected host or as result of competition for host resources. Here we describe a gene family, parasitoid killing factor (pkf), that encodes proteins toxic to parasitoids of the Microgastrinae group and determines parasitism success. Pkfs are found in several entomopathogenic DNA virus families and in some lepidopteran genomes. We provide evidence of equivalent and specific toxicity against endoparasites for PKFs found in entomopoxvirus, ascovirus, baculovirus, and Lepidoptera through a mechanism that elicits apoptosis in the cells of susceptible parasitoids. This highlights the evolutionary arms race between parasitoids, viruses, and their insect hosts.材料科学Materials ScienceLiquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility液体介质退火制备耐用的钙钛矿太阳能电池▲ 作者：Nengxu Li, Xiuxiu Niu, Liang Li, Hao Wang, et al.▲ 链接：https://science.sciencemag.org/content/373/6554/561▲ 摘要在此，我们报告一种液体介质退火（LMA）技术，它可以创造一个强大的化学环境和恒定的加热场来调节整个薄膜上的晶体生长。以我们的方法可以生产薄膜结晶度高、缺陷少，所需化学计量学和整体薄膜均匀性的薄膜。由此制备的钙钛矿太阳能电池（PSCs）产生稳定功率输出为24.04%（认证为23.7%，0.08 cm2），并在2000小时的运行后仍保持95%的初始功率转换效率（PCE）。此外，1 cm2的PSCs显示出23.15%的稳定功率输出（认证PCE为22.3%），并在1120小时的运行后保持初始PCE的90%，这说明了规模化制造的可行性。LMA对气候的依赖性较小，全年生产设备的性能差异可以忽略不计。该方法为以可规模化和可重现的方式提高钙钛矿薄膜和光伏器件的质量开辟了一条新的有效途径。▲ AbstractHere, we report a liquid medium annealing (LMA) technology that creates a robust chemical environment and constant heating field to modulate crystal growth over the entire film. Our method produces films with high crystallinity, fewer defects, desired stoichiometry, and overall film homogeneity. The resulting perovskite solar cells (PSCs) yield a stabilized power output of 24.04% (certified 23.7%, 0.08 cm2) and maintain 95% of their initial power conversion efficiency (PCE) after 2000 hours of operation. In addition, the 1-cm2 PSCs exhibit a stabilized power output of 23.15% (certified PCE 22.3%) and keep 90% of their initial PCE after 1120 hours of operation, which illustrates their feasibility for scalable fabrication. LMA is less climate dependent and produces devices in-house with negligible performance variance year round. This method thus opens a new and effective avenue to improving the quality of perovskite films and photovoltaic devices in a scalable and reproducible manner.Half-integer quantized anomalous thermal Hall effect in the Kitaev material candidate α-RuCl3α-RuCl3中的半整数量子化反常热霍尔效应▲ 作者：T. Yokoi, S. Ma, Y. Kasahara, S. Kasahara, T. Shibauchi et al.▲ 链接：https://science.sciencemag.org/content/373/6554/568▲ 摘要近日，有研究报告了二维蜂窝材料α-RuCl3的半整数热量子霍尔效应电导。我们发现，即使在没有平面外分量的磁场中，也出现了半整数热霍尔平台。量子化热霍尔电导的场角变化与纯基塔耶夫自旋液体的拓扑Chern数具有相同的符号结构。这表明，即使在α-RuCl3中存在非基塔耶夫相互作用时，局域磁矩的分馏仍保持非阿贝尔拓扑次序。▲ AbstractHalf-integer thermal quantum Hall conductance has recently been reported for the two-dimensional honeycomb material α-RuCl3. We found that the half-integer thermal Hall plateau appears even for a magnetic field with no out-of-plane components. The measured field-angular variation of the quantized thermal Hall conductance has the same sign structure as the topological Chern number of the pure Kitaev spin liquid. This observation suggests that the non-Abelian topological order associated with fractionalization of the local magnetic moments persists even in the presence of non-Kitaev interactions in α-RuCl3.Linked Weyl surfaces and Weyl arcs in photonic metamaterials光子超材料中连接外尔表面和外尔弧▲ 作者：Shaojie Ma, Yangang Bi, Qinghua Guo, Biao Yang et al.▲ 链接：https://science.sciencemag.org/content/373/6554/572▲ 摘要我们以具有工程电磁特性的超材料为基础，构建了一个具有杨-单极子和外尔表面的系统，通过选定的三维子空间，我们观察到了一些有趣的体和表面现象，如外尔表面和表面外尔弧的连接。我们所展示的光子外尔表面和外尔弧利用高维拓扑的概念来控制电磁波在人工工程光子介质中的传播。▲ AbstractWe constructed a system possessing Yang monopoles and Weyl surfaces based on metamaterials with engineered electromagnetic properties, leading to the observation of several intriguing bulk and surface phenomena, such as linking of Weyl surfaces and surface Weyl arcs, via selected three-dimensional subspaces. The demonstrated photonic Weyl surfaces and Weyl arcs leverage the concept of higher-dimension topology to control the propagation of electromagnetic waves in artificially engineered photonic media.Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments动力和能量多波段校准的发电和热电冷却▲ 作者：Bingchao Qin, Dongyang Wang, Xixi Liu, Yongxin Qin, Jin-Feng Dong et al.▲ 链接：https://science.sciencemag.org/content/373/6554/556▲ 摘要热电材料传递热量和电能，因此它们可以用于发电或冷却应用。这些材料中的许多都有狭窄的带隙，特别是在冷却应用中。我们通过铅合金化制备了具有良好热电性能的宽带隙SnSe晶体（Eg≈33 kBT）。Pb合金化促进了动量和能量的多能带排列，在300 K时功率因数高达~75 μW cm-1 K - 2，平均优点ZT为~1.90。我们发现，该热电器件能够实现约4.4%的热电转换效率，以及约45.7度的最大制冷温差。这些结果表明，宽带隙化合物可用于热电冷却应用。▲ AbstractThermoelectric materials transfer heat and electrical energy, hence they are useful for power generation or cooling applications. Many of these materials have narrow bandgaps, especially for cooling applications. We developed SnSe crystals with a wide bandgap (Eg≈33 kBT) with attractive thermoelectric properties through Pb alloying. The momentum and energy multiband alignments promoted by Pb alloying resulted in an ultrahigh power factor of ~75 μW cm-1 K - 2 at 300 K, and an average figure of merit ZT of ~1.90. We found that a 31-pair thermoelectric device can produce a power generation efficiency of ~4.4% and a cooling ΔTmax of ~45.7 K. These results demonstrate that wide-bandgap compounds can be used for thermoelectric cooling applications.