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A 35-year-old male patient presented to the hospital with binocular blurred vision for 2 weeks. The visual acuity of both eyes was 0.8. Fundus examination showed multiple yellow-white punctate lesions in the posterior pole of both eyes. OCT showed cystoid edema and submacular edema, thickening of ellipsoid zone and enhancement of reflex in macular region. Fundus autofluorescence showed strong autofluorescence at the lesion site. Fundus fluorescein angiography showed no fluorescence leakage in the lesion area. The patient was diagnosed with acute exudative polymorphous vitelliform maculopathy based on medical history, ocular multimodal examination and general examination. The patient was not given special treatment, but one week later, the lesion was fused and expanded, and the macular edema was worse than before.患者男性，35岁，因自觉双眼视物模糊2周就诊。双眼视力0.8，眼底检查可见双眼后极部多发黄白色斑点状病灶；相干光层析成像术检查结果显示黄斑区神经上皮层间多囊样积液及神经上皮层下积液，椭圆体带增厚、反射增强；眼底自发荧光显示病变部位为高自发荧光；荧光素眼底血管造影结果未见病变区域荧光素渗漏。结合病史、眼部多模式检查及全身检查情况，诊断为急性渗出性多形性卵黄样黄斑病变。患者未给予特殊治疗，1周后复查病灶部分有融合、扩大，黄斑区水肿情况较前加重。.

The interplay between various symmetries and electronic bands topology is one of the core issues for topological quantum materials. Spontaneous magnetism, which leads to the breaking of time-reversal symmetry, has been proven to be a powerful approach to trigger various exotic topological phases. In this Letter, utilizing the combination of angle-resolved photoemission spectroscopy, magneto-optical Kerr effect microscopy, and first-principles calculations, we present the direct evidence on the realization of the long-sought spontaneous ferromagnetism induced topological transition in soft ferromagnetic EuB_{6}. Explicitly, we reveal the topological transition is from Z_{2}=1 topological insulator in paramagnetic state to χ=1 magnetic topological semimetal in low temperature ferromagnetic state. Our results demonstrate that the simple band structure near the Fermi level and rich topological phases make EuB_{6} an ideal platform to study the topological phase physics.

子宫内膜增生多见于育龄期妇女，常见症状为异常子宫出血。本文汇总、整理子宫内膜增生相关研究，总结子宫内膜增生的高危因素、临床表现、评估和诊断、病理分型、治疗、随访以及患者长期管理、宣教等方面的循证医学证据，建立本指南，旨在为临床医师提供规范方案，促进女性健康和生育功能保护。.

The spin-momentum locking of surface states in topological materials can produce a resistance that scales linearly with magnetic and electric fields. Such a bilinear magnetoelectric resistance (BMER) effect offers a new approach for information reading and field sensing applications, but the effects demonstrated so far are too weak or for low temperatures. This article reports the first observation of BMER effects in topological Dirac semimetals; the BMER responses were measured at room temperature and were substantially stronger than those reported previously. The experiments used topological Dirac semimetal α-Sn thin films grown on silicon substrates. The films showed BMER responses that are 10 6 times larger than previously measured at room temperature and are also larger than those previously obtained at low temperatures. These results represent a major advance toward realistic BMER applications. Significantly, the data also yield the first characterization of three-dimensional Fermi-level spin texture of topological surface states in α-Sn.

Congenital abnormalities of the biliary system are a consideration in children with biliary symptomatology. The preoperative diagnosis rate is still not satisfactory, despite progresses made in imaging technology, with the potential of biliary tract injury if surgery is indicated. The double gallbladder is a rare developmental abnormality of the biliary tract with several anatomical variations. This abnormality was accurately delineated in a 7-year-old child by MRI/MRCP, allowing the ductal anatomy to be accurately identified and safe laparoscopic cholecystectomies to be performed.

Discoveries of interfacial topological Hall effect (THE) provide an ideal platform for exploring physics arising from the interplay between topology and magnetism. The interfacial topological Hall effect is closely related to the Dzyaloshinskii-Moriya interaction (DMI) at interface and topological spin textures. However, it is difficult to achieve a sizable THE in heterostructures due to the stringent constraints on the constituents of THE heterostructures such as strong spin-orbit coupling (SOC). Here we report the observation of a giant THE signal of 1.39 $\mu\Omega\cdot$cm in the van der Waals heterostructures of CrTe2/Bi2Te3 fabricated by molecular beam epitaxy, a prototype of two-dimensional (2D) ferromagnet (FM)/topological insulator (TI). This large magnitude of THE is attributed to an optimized combination of 2D ferromagnetism in CrTe2, strong SOC in Bi2Te3, and an atomically sharp interface. Our work reveals CrTe2/Bi2Te3 as a convenient platform for achieving large interfacial THE in hybrid systems, which could be utilized to develop quantum science and high-density information storage., Comment: 5 figures and 1 table

随着医学技术的发展，新的检查方法及设备层出不穷，临床诊疗越来越依赖辅助检查，细致详尽的、充满人文关怀的病史询问及经典的视、触、叩、听则有被边缘化的趋势。临床诊疗中，合理与适宜的检查是必需的，但“好的病史是临床检查的基础”，选择有针对性的辅助检查并解读其报告，应建立在详尽准确的病史基础之上。仅通过全面而有技巧的问诊，可以区分90%以上的症状是眩晕或是非旋转性头晕，可以基本明确70%~80%头晕/眩晕患者的病因，但头晕/眩晕病史采集并非易事，其涵盖疾病和内容非常广泛，需花费很长时间。如何在有限时间内有所侧重，在繁忙的临床工作中更高效地采集到更准确的信息？本文从头晕/眩晕诊疗思路入手，介绍面对不同患者的问诊策略。.

Description, Applying heat to a magnetoelectric antiferromagnet enables an electric field control of magnon spin currents., Pure spin currents can be generated via thermal excitations of magnons. These magnon spin currents serve as carriers of information in insulating materials, and controlling them using electrical means may enable energy efficient information processing. Here, we demonstrate electric field control of magnon spin currents in the antiferromagnetic insulator Cr2O3. We show that the thermally driven magnon spin currents reveal a spin-flop transition in thin-film Cr2O3. Crucially, this spin-flop can be turned on or off by applying an electric field across the thickness of the film. Using this tunability, we demonstrate electric field–induced switching of the polarization of magnon spin currents by varying only a gate voltage while at a fixed magnetic field. We propose a model considering an electric field–dependent spin-flop transition, arising from a change in sublattice magnetizations via a magnetoelectric coupling. These results provide a different approach toward controlling magnon spin current in antiferromagnets.