Black

摘要： 一张沙发、一块屏幕、一盘点心,就能让人躺一下午,愉快地追剧、看小说、聊八卦……运动?下次吧!你知道哪里的年轻人最不爱动吗?为了让这届年轻人动起来,世界各地的人们都想尽了办法!01 School principal breaks the rules with his bold dance move山西校长带学生跳鬼步舞课间操A primary school principal in North China has become an internet celebrity for busting some cool moves during a morning exercise routine with his students. Dressed in a sleek black-on-black ensemble.

摘要： Sevil.People often find a piece of themselves in the shadows.Figures crafted from animal hides,alongside a light source,a white screen,and some music,can open the door to a wonderful black-and-white world.

摘要： "I’ve gotten pleasantly plump,"Padma Tsering said,almost selfmocking,when we first met.His humor rescued me from a bout of first-meeting embarrassment.The 32-year-old wore casual clothes,with his unruly black hair tied up haphazardly.Some white hair was visible,too early for his age,by far.Still,though,he looked quite handsome.

摘要： Recently,all-inorganic perovskites have attracted attention due to good thermal stability[1−12].Among them,CsPbI3 has the most desirable optical bandgap(~1.7 eV)for applications in optoelectronic devices[13−16].In general,making black-phase CsPbI3 film requires a high-temperature annealing up to 320°C[17,18],which inevitably raises energy consumption.Though being made at high temperature,the resulting black-phase(αorβphase)CsPbI3 film still suffers from an un-desirable phase transition under ambient conditions[19,20].Sev-eral strategies have been developed to lower the annealing temperature(90-100°C)[20−26],it is still challenging to stabilize black-phase CsPbI3 under ambient condition with high humidity and without a tedious annealing process.Herein,we developed a simple crystal redissolution(CR)strategy to make stable black-phase CsPbI3 film in ambient air with high humidity and without post-annealing.4-N,N-dimethylamino-4ʹ-Nʹ-methyl-stilbazolium tosylate(DAST)can chemically interact with CsPbI3 to reduce the formation energy of black-phase and inhibit CsPbI3 to undergo black-to-yellow phase transition.

摘要： Every winter,tourists to Tibet make sure to allow time in their itineraries to observe the flocks of black-necked cranes in Lhundrup County,Lhasa City.Often,blacknecked cranes fly from the prairie of Nagqu to the valley of Lhasa River during the winter months and then fly away once spring comes.Their annual appearance thus adds significant charm to an already mesmerizing snow-covered highland.

摘要： We conducted the third population survey of western black crested gibbons(Nomascus concolor)in Mt.Wuliang,Yunnan Province,China,from November 2020 to March 2021 following the first and second surveys conducted in 2001 and2010,respectively.We recorded 104 gibbon groups during the current survey.

摘要： The British first discovered tea when sailors visited China in the 1600s.The first tea to arrive in Britain was green tea.Black tea arrived in the 1700s,but both kinds of tea were only drunk by rich people.British people started to mix black tea and milk together.This is still how most Britons prefer their tea.Many people also add sugar.

摘要： DEAR EDITOR,We examined the distribution,population,and conservation status of the critically endangered Myanmar or black snub-nosed monkey(Rhinopithecus strykeri)via field surveys over 26 months(2019-2021)in the Pianma region of the China-Myanmar border.Contrary to previous reports,we only identified one group in the region,which was a cross-border group occupying a multi-year home range of 51.50-57.02 km^(2).The current group size was much larger(155-160 individuals)than that in 2012-2014(ca 100 individuals),and the group appeared to be growing.However,confirmed poaching,mining,and transboundary forest fires on the Myanmar side of the border threaten their survival.

摘要： Hello,everyone.My name is Wang Kaiying and my English name is Colin.I’m 10 years old.I’m a student in Class 5,Grade 4 of Zhuoya Foreign Language School of Zhongshan City.At school,I have some good friends.One of my good friends is Shao Shiyuan.

摘要： BACKGROUND Preterm birth(PTB)is one of the main causes of neonatal deaths globally,with approximately 15million infants are born preterm.Women from the Black,Asian,and Minority Ethnic(BAME)populations maybe at higher risk of PTB,therefore,the mental health impact on mothers experiencing a PTB is particularly important,within the BAME populations.AIM To determine the prevalence of mental health conditions among BAME women with PTB as well as the methods of mental health assessments used to characterise the mental health outcomes.METHODS A systematic methodology was developed and published as a protocol in PROSPERO(CRD420-20210863).Multiple databases were used to extract relevant data.I2 and Egger's tests were used to detect the heterogeneity and publication bias.A trim and fill method was used to demonstrate the influence of publication bias and the credibility of conclusions.RESULTS Thirty-nine studies met the eligibility criteria from a possible 3526.The prevalence rates of depression among PTB-BAME mothers were significantly higher than full-term mothers with a standardized mean difference of 1.5 and a 95%confidence interval(CI)29%-74%.The subgroup analysis indicated depressive symptoms to be time sensitive.Women within the very PTB category demonstrated a significantly higher prevalence of depression than those categorised as non-very PTB.The prevalence rates of anxiety and stress among PTB-BAME mothers were significantly higher than in full-term mothers(odds ratio of 88%and 60%with a CI of 42%-149%and 24%-106%,respectively).CONCLUSION BAME women with PTB suffer with mental health conditions.Many studies did not report on specific mental health outcomes for BAME populations.Therefore,the impact of PTB is not accurately represented in this population,and thus could negatively influence the quality of maternity services they receive.

摘要： 本发明涉及制备还原橄榄T(C.I.Vat Black 25)的新方法，与现有技术相比，其优点在于，生产过程容易控制，原料回收率高，成本低，环境污染小，产品质量更好。在此之前的报道的还原橄榄T制备的技术方法均是以3，9-二溴苯绕蒽酮与1-氨基蒽醌、氢氧化钾在丁醇溶液中制备得到，丁醇由于沸点低，挥发性大，合成过程中较难控制，回收困难，原材料消耗高，生产成本高并造成环境污染。本发明提供的工艺方法以三甘醇为溶剂制备得到产品，其原材料循环利用率高，工艺易控制，成本低，并且产品质量明显提高的特点，经济效益和环保效益十分明显。

摘要： 本发明公开了一种基于BeagleBone Black的教学用PLC设备，它涉及机电专业教学实训设备技术领域。包括BeagleBone Black开发板、10.1寸人机交互界面、直流电机及设备外壳箱体。硬件部分完成PLC系统内核运行并提供各种I/O和通信接口；软件部分采用的是CoDeSys Runtime实时内核和其运行的PLC项目。根据所选择BeagleBone Black开发板，该设备可以支持多种工业总线，包括但不限于EtherCAT、EtherNET/IP、CANopen和PROFINET协议。本发明较传统PLC教学设备具有较高的自定义程度，教学项目丰富，成本较低。

摘要： 本发明属于压电光催化剂领域，特别涉及一种Bi2WO6/Black‑TiO2复合催化剂及其制备方法和应用。复合催化剂以黑钛为载体，钨酸铋为活性组分，Bi2WO6在催化剂中的质量含量为0.1％～10％，该催化剂用于在太阳光下压电降解罗丹明B。本发明的复合光催化剂合成方法简单、成本低廉、绿色环保。对有机染料具有更强的吸附能力和更好的光催化活性。另外，Bi2WO6与B‑TiO2能很好地结合形成异质结结构，二者协同改善了载流子的分离，提高电子空穴的分离效率，在太阳光照射下表现出优异的压电‑光催化性能。

摘要： 一种基于BeagleBone‑Black的电机运动控制器，属于工业机器人多轴运动控制器领域，本发明为解决现有电机运动控制器存在的体积大导致应用场合受限，及脉冲输出方式误差大影响控制精度问题。本发明包括BeagleBone‑Black单板计算机、FPGA和DSP；BeagleBone‑Black单板计算机，用于发布电机运动路径指令，并发送至FPGA；FPGA，用于接收BeagleBone‑Black单板计算机发布的电机运动路径指令，供DSP调取；还用于对DSP返回的粗插补运动路径进一步精插补；DSP，用于从FPGA中调取所述电机运动路径指令，并进行粗插补操作后形成粗插补运动路径返回至FPGA中；经粗插补、精插补两级规划后形成最终电机运动规划路径以脉冲信号形式输出给电机驱动器。

摘要： 本发明公开了一种基于Black phosphorus材料的SPPs效应纳米谐振腔及其制作方法，解决长期存在于光学吸收与吸收层厚度之间的矛盾关系。包括反射层、空间损耗层、吸收层和纳米多孔层。反射层采用金属Al材料；空间损耗层采用Al2O3材料；吸收层采用二维材料黑磷；纳米多孔层采用金属Ag材料；纳米多孔层、吸收层、空间损耗层、反射层依次由上而下竖直分布。本发明通过黑磷材料的应用，增强了光学吸收，同时纳米多孔层的引入，在Ag/Black phosphorus界面处形成明显的SPPs效应，进一步提高吸收增益，拓展了吸收光谱，提升了光伏器件的整体性能，进而推动超薄能量捕获和转换应用的发展。

摘要： 一种基于BeagleBone‑Black的Ad‑Hoc路由协议验证方法，包括以下步骤：步骤1去除无用模块组件的系统内核移植到各设备节点的BeagleBone‑Black系统上；步骤2将需要验证的路由协议移植到系统上，配置外接网卡参数使节点能正常收发数据；步骤3在户外实地场景中，开启多个设备节点运行路由协议，配置工作模式为Ad‑Hoc，同时系统外接的传感器搜集信号，在一节点上开启定制的软件在网络中寻找目标主机并转发，在目的主机端通过定制软件观察端到端的传输延时、数据的丢包率；步骤4启动所有设备节点进行测试，得出验证结果。采用本发明技术方案可将设备节点带到实地场景中，进一步提升实验数据的真实性与可靠性，简单快捷的组网方式使得此系统具有很好的应用前景。

摘要： 本发明公开了一种基于BeagleBone‑Black的Ad‑Hoc路由协议验证系统，由多个功能完全相同的设备节点构成的自组织网络组成，其中每个设备节点之间通过无线信号连接，每个设备节点包括负责实验数据的处理的数据处理器、负责实验数据的转发与接收的无线收发器、负责提供实验收发数据的传感器、用于显示系统的运行状态及参数的显示屏、负责提供电能并具有很好的移动性的可移动电源。采用本发明技术方案可将设备节点带到实地场景中模拟，将进一步提升实验数据的真实性与可靠性，简单快捷的组网方式使得此系统具有很好的应用前景。

摘要： 本实用新型公开了一种基于FPGA的Black‑Scholes期权定价模型加速电路，包括CPU系统和FPGA芯片。FPGA芯片包括第一、第二AXI互联矩阵、五个DMA输入模块、一DMA输出模块和BS核心运行模块。CPU系统的GP接口经第一AXI互联矩阵与各DMA输入模块、DMA输出模块的控制接口连接，CPU系统的ACP接口经第二AXI互联矩阵与各DMA输入模块的数据输入接口、DMA输出模块的数据输出接口连接，各DMA输入模块的数据输出接口分别与BS核心运行模块的相应参数输入接口连接，BS核心运行模块的结果输出接口与DMA输出模块的数据输入接口连接。本实用新型加快了Black‑Scholes模型的实现速度，耗时短，功耗低。

摘要： 本实用新型公开了一种基于BeagleBone‑Black的Ad‑Hoc路由协议验证系统，由多个功能完全相同的设备节点构成的自组织网络组成，其中每个设备节点之间通过无线信号连接，每个设备节点包括负责实验数据的处理的数据处理器、负责实验数据的转发与接收的无线收发器、负责提供实验收发数据的传感器、用于显示系统的运行状态及参数的显示屏、负责提供电能并具有很好的移动性的可移动电源。采用本实用新型技术方案可将设备节点带到实地场景中模拟，将进一步提升实验数据的真实性与可靠性，简单快捷的组网方式使得此系统具有很好的应用前景。