Results 101 to 110 of about 24,784 (188)
Devouring the Invaders: The Racial‐Ecological Politics of the Chinese Crayfish Trade in Kenya
American Anthropologist, Volume 128, Issue 1, Page 183-194, March 2026.ABSTRACT This article examines entanglements of ecology, race, and foodways at Lake Naivasha in Kenya. Nonnative Louisiana red swamp crayfish (Procambarus clarkii), first introduced to Kenya in the 1960s, were once viewed as invasive but are now sought after as a delicacy among Kenya's Chinese community.
Amanda Kaminsky
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Antipode, Volume 58, Issue 2, March 2026.ABSTRACT Drawing on Rancière's “politics of aesthetics,” this paper frames digitally facilitated gentrification as a battleground for visibility and associated value extraction between different stakeholders and investigates how aesthetic sensibilities are redistributed through social media.
Chenxin Wan, Shenjing He
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Guangtongxin yanjiu, 1978 <正> 简介随着通信事业的发展,目前地、县局采用的通信设备日益增多,对电源也提出了更新的要求。主要是要求能不间断地供电,以确保通信畅通,并且要求电源设备种类简化,以减少投资、便于维护。因此,现在多使用逆变器组成不停电电源,即用某一种电压的蓄电池组,将直流电经过逆变器转变为50周交流电源,再根据需要直接使用或整流成各种直流电源。在有市电时,使用充电整流器对蓄电池组充电,市电中断时,通过转换开关由逆变器代替市电向通信设备供电,以组成不停电供电系统,如图1所示。
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Governance of Climate‐Induced Relocation in the US: An Exploration of Institutional Complexity
Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT Climate change has and will continue to have a profound effect on both individuals and the communities in which they reside. A pressing question is how communities forced to confront climate‐induced catastrophe—including both rapid and slow‐onset hazards—undertake the decision of how and when to relocate, particularly given the multiple scales
Christopher S. Galik, Brad A. Johnson
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HEK-293 细胞 α 1B-肾上腺素受体引起的 Ca2+依赖性 K+电流和 Ca2+内流
Zhongshan Daxue xuebao. Yixue kexue ban, 1999 目的: 研究 HEK-293细胞上α 1B -肾上腺素受体亚型引起向外K+电流和Ca2+内流的特性。方法: 细胞贴附式单通 道记录K +通道和 Fura-2荧光测定胞浆游离 Ca2+浓度。结果: 肾上腺素或苯肾上腺素可引发一电导为 160 pS 的外向K +电流。 该电流可被 50 μ mol·L-1氯乙醛可乐定( CEC) , 5 mmol·L1 依他酸( EGTA)或 2 mmol·L-1四乙铵( TEA)抑制。硝苯吡啶 ( nifedipine)不改变该电流及α 1B亚型引起的 Ca2+内流 ...
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Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT This study adapts the Multiple Streams Framework (MSF) to explore why COVID‐19 vaccine mandates were applied at sectoral and subnational levels in Vietnam while the central government maintained that vaccination was voluntary. Document analysis reveals that these mandates arose from the effective coupling of the three streams—problem, policy ...
Hang Duong, Katie Attwell
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Shiyou jixie, 2015 气体钻井中携岩气体冲击四通内壁是导致四通失效的主要原因。基于气固两相流和冲蚀理论，运用CFD软件对四通本体流体域进行数值计算，分别研究了实际钻井工况下钻杆偏心的情形和不同钻井工艺对四通本体的冲蚀规律。研究结果表明，随着偏心距的增大，岩屑的轴向速度逐渐增大，局部冲蚀速率也呈现增大的趋势；由于偏心造成的岩屑粒子轨迹偏转向四通宽流道一侧冲击，容易在局部造成严重的冲蚀缺陷，导致四通承压能力下降；在不同钻井工艺下，冲蚀速率峰值和流体速度峰值都随注气量和岩屑质量流量的增加而基本呈线性递增趋势，而与岩屑粒径成反比关系，
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[[abstract]]台灣地區高速公路與收費橋樑於尖峰時段常因車輛停車繳費使收費站成為交通瓶頸，導致車流嚴重壅塞的情況。在不增加收費車道的前提下，可以採用在單一收費車道土縱向設置兩個收費亭，各由一名收費員分別對兩部車輛同時進行收費服務的「雙座式收費」作業方式，以提高收費系統的作業能量，改善收費站所造成的交通問題。 本研究以中山高速公路泰山收費站及台北市永福橋收費站為對象，蒐集有關車流與收費作業等資料。根據實測資料之車輛時空(time –space)軌跡圖與車流累積間距分配 ...
韓復華
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Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT This study applies the Narrative Policy Framework (NPF) within a non‐democratic context, exploring the role of policy narratives in the implementation of patient‐centred healthcare policy in China. Drawing on a dataset of academic journal articles that reference both “market” and “patient‐centredness,” the research reveals how local ...
Jingqing Yang
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