Results 31 to 40 of about 1,506 (134)

高频超声对老年高血压水平与颈动脉斑块关系的研究

open access: yesZhongguo shiyan zhenduanxue, 2015
彩色多普勒高频颈动脉超声检查,对临床预测颈动脉狭窄程度、评估斑块成分提供了有效的手段[1]。斑块内有无出血发生、有无溃疡形成及斑块的增长速度是决定斑块稳定性的重要因素。高血压水平与心脑血管事件的风险评估,易损斑块的发生率的预测是预防高血压的关键[2]。本研究采用高频超声评价对老年高血压水平与颈动脉斑块关系,及时发现颈动脉易损斑块 ...
邱文风, 聂颖, 李素英, 景文宝
doaj  

Ecological Restoration of Rubber Monocultures: Strategies for Biodiversity and Ecosystem Recovery in Tropical Regions 题目:如何将橡胶林恢复为多样森林?

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 345-353, September 2025.
Restoration of monoculture in protected and marginal areas can be organized into two phases (1) identification and prioritization of restoration sites based on remote sensing or field survey then assessing degradation level, and (2) implementation of appropriate restoration interventions.
Liang Song   +9 more
wiley   +1 more source

急性颈内动脉系统脑梗死患者颈内动脉角与动脉粥样硬化斑块形态关系的研究 Relationship between Internal Carotid Artery Angle and Plaque Morphology in Patients with Acute Anterior Circulation Infarction

open access: yesZhongguo cuzhong zazhi, 2019
【摘要】 目的 利用颈动脉高分辨率磁共振成像(high resolution MRI,HR-MRI)技术分析急性脑梗死患者颈内动脉角(internal carotid artery angle,ICAA)与动脉粥样硬化斑块形态学特点,探讨ICAA与动脉粥样硬化斑块形态的关系。 方法 入组2011年11月-2012年6月的急性颈内动脉系统脑梗死患者,行颈动脉HR-MRI检查,获得每例患者左右侧ICAA及动脉粥样硬化斑块形态资料。根据ICAA大小的中位数将颈动脉分为ICAA≥35°组和ICAA<35°组,
王琳,王晶,申园,龚浠平,刘艳芳
doaj   +1 more source

Predicting Spatial Distributions of Mammalian Predation on Translocated Wild Turkeys in Agriculturally Dominated Landscapes 在以农业为主的景观中哺乳动物对易地放归的野生火鸡捕食的空间分布预测

open access: yesWildlife Letters, Volume 3, Issue 3, Page 91-98, September 2025.
The edge densities of cropland, developed land, and water bodies (panel a) predict the spatial probability of mammalian predation on wild turkeys (panel b) using Mahalanobis distance factor analysis in Quitman County, Mississippi, United States. The three habitat fragmentation variables are represented by three arrows, respectively.
Guiming Wang   +2 more
wiley   +1 more source

速度向量成像技术评价颈动脉硬化斑块内部应变

open access: yesZhongguo shiyan zhenduanxue, 2011
颈动脉粥样硬化斑块与缺血性脑卒中密切相关,而斑块的不稳定性是其危险性的最重要因素。因此对于颈动脉粥样硬化斑块稳定性的研究尤为重要。本研究应用速度向量成像(VVI)技术初步分析颈动脉粥样硬化斑块受力后的形变特点,探讨该项技术在评价斑块力学状态方面的应用价值 ...
冯海艳   +5 more
doaj  

Æ E Æ Å – Reshaping the Role of Træna Fishermen

open access: yes, 2022
This diploma project aims to strengthen the viability of Træna’s community by proposing an ocean research facility in the archipelago, enabling the next generation of local fishermen to collect oceanographic data while working at sea. The idea of the fisherman as oceanographer is inextricably linked to the architectural program on the island of ...
openaire   +1 more source

Biosphere reserves in the megadiverse Cape Floristic Region are effective in conserving arthropod diversity 开普植物区的生物圈保护区有效保护了节肢动物多样性

open access: yesIntegrative Conservation, Volume 3, Issue 4, Page 312-329, December 2024.
Biosphere reserves aim to protect global biodiversity alongside social and economic development. In the Cape Floristic Region, biosphere reserves are an effective conservation approach to protect arthropods against habitat transformation in this biodiverse region.
Michael J. Samways   +3 more
wiley   +1 more source

扎龙自然保护区丹顶鹤巢址景观连接度评价

open access: yes野生动物学报, 2018
景观连接度度量了物种在斑块之间的运动不受阻碍的连通性,对生境质量和破碎化研究有重要意义。本文基于2004年和2013年扎龙自然保护区遥感影像的解译分类,采用基于图论法的面积权重指数(AWF)划定巢址景观连接度等级,然后对不同景观连接度区域的景观格局特征指数进行分析。结果显示:2004年高景观连接度的丹顶鹤生境斑块面积为522.16 km2,而2013年高景观连接度斑块下降为432.82 km2,高景观连接度斑块集中分布于核心区内部; 2013年高景观连接度斑块的平均斑块周长面积比明显高于其他斑块 ...
李菲菲 马社刚 李 浩 袁 力 程 鲲 马建华
doaj  

Multi‐Scale Spatial Effects Determine Nest Success in Small Urban Forest Patches 多尺度空间效应决定了城市小型森林斑块中的筑巢成功率

open access: yesWildlife Letters, Volume 2, Issue 4, Page 192-203, December 2024.
Knowledge of the reproductive success of organisms in urban habitat fragments is needed to conserve biodiversity in our urbanizing world. We found that differences in nest success among birds in urban forest patches is explained by factors on three distinct spatial scales even across a limited urban development gradient.
Ohad J. Paris, Colin E. Studds
wiley   +1 more source

Eyes on nature: Embedded vision cameras for terrestrial biodiversity monitoring

open access: yesMethods in Ecology and Evolution, Volume 15, Issue 12, Page 2262-2275, December 2024.
Abstract We need comprehensive information to manage and protect biodiversity in the face of global environmental challenges, and artificial intelligence is required to generate that information from vast amounts of biodiversity data. Currently, vision‐based monitoring methods are heterogenous; they poorly cover spatial and temporal dimensions, overly ...
Kevin F. A. Darras   +11 more
wiley   +1 more source

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