检索结果-南通市图书馆

Spatial distribution of morphometric parameters of glacial cirques in the Central Pyrenees(Aran and Boí valleys)

Journal of Mountain Science 2018年第10期15卷 2103-2119页

作者： Luis LOPES Marc OLIVA Marcelo FERNANDES Paulo PEREIRA pedro palma Jesús RUIZ-FERNáNDEZ Centre for Geographical Studies – IGOT Universidade de Lisboa Department of Geography University of Barcelona Environmental Management Center Mykolas Romeris University Department of Geography University of Oviedo

Glacial cirques are typical landscape features of mid-latitude mountain environments like the Central Pyrenees. Their morphology as well as their spatial distribution provides insights about past glaciers and climates. In this study, we examine the distribution, morphometrical and topographical characteristics of glacial cirques in two U-shaped glacial valleys located in the Central Pyrenees – the Aran and the Boí valleys. They are located in different aspects of this mountain range(north vs south) under different climatic influences that promoted distinct glaciation patterns during the late Pleistocene. The spatial mapping of these landforms was carried out using high-resolution imagery and field observations. We analysed the data of the morphometrical and topographical variables of the glacial cirques by using different statistical and geospatial methods in order tounveil the factors controlling their formation and development. A total of 186 glacial cirques were mapped in the study area, including 119 in the Aran and 67 in the Boí valleys. The local topography and microclimate conditions lead to substantial differences in both areas in terms of the morphology and dimensions of the cirques. Glacial cirques in Boí are distributed at slightly higher elevations than in Aran and they are also larger, though their dimensions decrease with elevation in both valleys. Aran cirques are mostly oriented NE, while Boí landforms do not show any prevailing aspect. Even though lithology does not control the distribution of the glacial cirques, some specific lithological settings may favour the development of larger cirques. In general, glacial cirques in the Aran and the Boí valleys show morphometrical properties similar to those reported in other mid-latitude mountain ranges.

关键词： Central Pyrenees Aran and Boi valleys glacial cirques topography morphometry.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Percutaneous decannulation of extracorporeal membrane oxygenation using MANTA device:A real-world single-center experience

引用

World Journal of Cardiology 2024年第10期16卷 574-579页

作者： Ioannis Milioglou Alice Qian pedro Rafael Vieira de Oliveira Salerno Gabriel Tensol Rodrigues Pereira Luis Augusto palma Dallan Kelsey E Gray Michael Morrison Yasir Abu-Omar Mohammad Eldiasty Cristian Baeza Department of Cardiology University Hospitals Cleveland Medical CenterClevelandOH 44106United States Department of Surgery University Hospitals Cleveland Medical Center and Case Western Reserve University School of MedicineClevelandOH 44106United States

BACKGROUND The MANTA vascular closure device(VCD)represents a novel approach to achieving hemostasis after large-bore femoral access *** clinical studies have evaluated the efficacy of the MANTA device across a range of patient populations undergoing different ***,there is still a paucity of data available concerning the use of MANTA devices in aiding the decannulation of venoarterial extracorporeal membrane oxygenation(VAECMO).AIM To present our single-center experience of utilizing the MANTA VCD in patients undergoing this *** This single-center study included all patients undergoing percutaneous decannulation of femoral VA-ECMO using the MANTA plug-based VCD between January 2021 and October 2023 at University Hospitals Cleveland Medical *** criteria were adult patients who required prolonged(>24 hours)hemodynamic support with *** included all-cause mortality,hemostasis,bleeding,limb ischemia,and site *** This is a retrospective cohort study of 19 patients with a mean age of 56.8 *** of them were males with a mean body mass index of *** most common extracorporeal membrane oxygenation indication was acute coronary syndrome complicated by cardiogenic shock at 36.8%.The mean length of intensive care unit stay for these patients was 18.8±8.42 *** out of 19 patients survived to *** MANTA device was successfully deployed in 19 patients,with 10 procedures conducted at the bedside and 9 in an operating room *** hemostasis was achieved within 5 minutes of MANTA deployment in 17 out of 19 *** 2 patients manual compression after Manta deployment was required to achieve adequate ***,acute lower extremity ischemia was noted in two patients,necessitating endovascular *** infections were reported at the site of MANTA *** Overall,based on our experience and that of other centers,the MANTA VCD

关键词： Extracorporeal membrane oxygenation MANTA Decannulation Hemostasis Ischemia

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthetic Time Series Generation Model for Analysis of Power System Operation and Expansion with High Renewable Energy Penetration

引用

Journal of Modern Power Systems and Clean Energy 2021年第4期9卷 849-858页

作者： Rodrigo palma-Behnke Jorge Vega-Herrera Felipe Valencia Oscar Nunez-Mata Energy Center Department of Electrical EngineeringFaculty of Mathematical and Physical SciencesUniversity of ChileSantiagoChile Department of Electrical Engineering University of AntofagastaAntofagastaChile School of Electrical Engineering University of Costa RicaSan PedroCosta Rica

The increasing integration of renewable energy sources into current power systems has posed the challenge of adequately representing the statistical properties associated with their variable power generation. In this paper, a novel procedure is proposed to select a proper synthetic time series generation model for renewable energy sources to analyze power system problems. The procedure takes advantage of the objective of the specific analysis to be performed and the statistical characteristics of the available time series. The aim is to determine the suitable model to be used for generating synthetic time series of renewable energy sources. A set of indicators is proposed to verify that the statistical properties of synthetic time series fit the statistical properties of the original data. The proposal can be integrated into systematic tools available for data analysis without compromising the representation of the statistical properties of the original time series. The procedure is tested using real data from the New Zealand power system in a mid-term analysis on integrating wind power plants into the power system. The results show that the proposed procedure reduces the error obtained in analyzing power systems compared with reference models.

关键词： Time series analysis renewable energy source solar energy stochastic process statistical analysis wind energy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Cost of Using IEEE 802.16d Dynamic Channel Configuration

The Cost of Using IEEE 802.16d Dynamic Channel Configuration

引用

2008 IEEE International Conference on Communications(ICC 2008)

作者： Bruno Sousa pedro Neves Gabriela Leo David palma Jorge Sá Silva Susana Sargento Francisco Fontes Marília Curado Fernando Boavida Laboratory of Communications and Telematics Faculty of Science and Technology of CoimbraPólo ⅡPinhal de Marrocos3030-290 Coimbra Portugal Portugal Telecom Inova o Rua Eng.José Ferreira Pinto Basto3810-106 AveiroPortugal Instituto de Telecomunica es Universidade de Aveiro3810-193 AveiroPortugal

Ubiquitous broadband Internet access is an important requirement to satisfy user demands and support a new set of real time services and *** 802.16,as a Broadband Wireless Access technology,can significantly contribute in this *** is able to provide high throughput over large distances,with intrinsic QoS support,in Line-of-Sight and NonLine-of-Sight *** paper discusses a network architecture,based on IEEE 802.16d compliant equipments,which is able to support real-time services with QoS integration through dynamic configuration of the 802.16 channel,using the NSIS *** have been carried out to evaluate the QoS performance of the defined architecture,demonstrating that it is perfectly capable of handling and supporting real time services,using dynamic configuration of the 802.16 channel,without introducing an excessive cost in the network.

关键词： NSIS,QoS,WEIRD,WiMAX

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

47^th TROFEO PRINCESA SOFIA索菲娅公主杯帆船赛备战里约奥运会

引用

游艇业 2016年第3期 14-15页

作者： pedro Martinez

2016第47届Trofeo Princesa Sofia（索菲娅公主杯帆船赛）于3月27日在西班牙palma（帕尔玛）湾拉开了比赛的大幕。赛事共设12个组别，作为2016里约奥运会积分赛备受瞩目，吸引了来自68个国家超过800支船近1000多名选手参赛。

关键词：奥运会帆船菲帕尔玛西班牙

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Percentage Change on FDG-PET/CT Predicts Complete Response to Neoadjuvant Radiochemotherapy in Esophageal Cancer

引用

International Journal of Clinical Medicine 2019年第10期10卷 531-542页

作者： Esther Jimenez-Jimenez Irene Ortiz Neus Aymar Raquel Roncero pedro Mateos Marta Gimenez Jose Pardo Sebastià Sabater Radiation Oncology Department Complejo Hospitalario Universitario de Albacete Spain Radiation Oncology Department Hospital Universitari Son Espases Palma de Mallorca Spain Medical Physics Department Hospital Universitari Son Espases Palma de Mallorca Spain Nuclear Medicine Department Hospital Universitari Son Espases Palma de Mallorca Spain.

Objective: We evaluated whether the changes in FDG-PET/CT uptake between pre/and post-treatment might predict a complete response in esophageal cancer (EC). Patients and Methods: Fifty-six patients with 2 PET-CTs studies were evaluated retrospectively. Images were evaluated qualitatively and semiquantitatively (SUVs). Patients were classified as persistence of disease, complete metabolic response and unspecific FDG uptake. The SUVmax values and percentages of change in SUV were measured. Results: A significant difference was found between the persistence group and the non-persistence group regarding the median percentage change in SUVtumor (72.95% vs. 54.12%;p = 0.04) and regarding the percentage change in SUVnode (89.91% vs. 59.91%, p = 0.04). In patients treated with radiochemotherapy (RCTX), a significant difference was found between the persistence group and the no persistence group regarding the percentage change in SUVtumor (58.02% vs. 78.59%). Overall survival rate was related to the percentage of change in the SUVtumor. The group of ≥75% of change SUVtumor showed a median survival of 37.32 months (IC: 95% = 49.93 - 24.70) and the group of <75% of change SUVtumor showed a median survival of 18.39 months (IC: 95% = 25.14 - 11.65) (p = 0.04). In patients with metastatic relapse, a significant difference was found regarding the percentage change in SUVnode (94.63% vs. 74.09%). Conclusion: Our study provides evidence that the percentage change in the SUVmax is a predictor of the response to neoadjuvant treatment in patients with EC. When SUVmax decreases by 72.95% or more, the patient is likely a complete responder.

关键词： PET/CT Esophageal Response SUV Percentage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：