检索结果-南通市图书馆

Performance-Associated Factors of Elderly Patients with a Low Education Level, with Acquired Language Alterations in Tests to Explore Executive Functions

引用

World Journal of Neuroscience 2017年第3期7卷 293-306页

作者： Erislandy Omar-Martinez Mariana Pino-Melgarejo Claudia Idárraga-Cabrera yisel rodríguez-aldana rodríguez-aldana Universidad de Oriente Santiago de Cuba Cuba Universidad Autónoma del Caribe Barranquilla Colombia Universidad de la Costa Barranquilla Colombia

Introduction. Secondary alterations of executive functions occur in brain injuries together with the primary neuropsychological symptoms, irrespective of the location of the damage and the affected neural networks. Such secondary alterations of executive functions in the presence of language alterations, which is the most frequent primary neuropsychological alteration, in addition to exacerbating the linguistic processing deficit, may be associated to multiple factors inherent to the brain injury or the injured patient. Purpose. To describe the secondary neuropsychological alterations of executive functions in elderly patients with low education levels with acquired language disorders and determine general factors of the injury and of the injured patient (etiology, location, time of recovery from the injury, age, education level), associated to such secondary alterations of the Attentional Control System. Patients and Methods. The study was conducted on 68 elderly patients with a low education level with language acquired disorders, of both sexes, ranging between 60 and 80 years of age. The executive functions explored included cognitive flexibility, impulsivity control and inhibition of irrelevant automatisms, with the Trail Making Test, the Porteus Maze Test and series of loops. Statistical processing involved a Distribution of Frequencies and Multiple Ordinal Regression. Results and Conclusions. The statistical analysis found secondary neuropsychological alterations of the executive functioning in the elderly patients with language disorders of the study that are associated to the location and the time of recovery from the injury and are irrespective of age, education level and etiology of the injury.

关键词： Impulsivity Control Cognitive Flexibility Executive Functions Irrelevant Automatisms Inhibition Acquired Language Disorders

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

Q-switching of waveguide lasers based on graphene/WS_2 van der Waals heterostructure

引用

Photonics Research 2017年第5期5卷 406-410页

作者： ZIQI LI CHEN CHENG NINGNING DONG CAROLINA ROMERO QINGMING LU JUN WANG JAVIER rodríguez VáZQUEZ DE aldana YANG TAN FENG CHEN School of Physics State Key Laboratory of Crystal Materials Shandong University Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Laser Microprocessing Group Facultad Ciencias Universidad de Salamanca School of Chemistry and Chemical Engineering Shandong University

We report on the operation of passively Q-switched waveguide lasers at 1 μm wavelength based on a graphene∕WS_2 heterostructure as a saturable absorber(SA). The gain medium is a crystalline Nd:YVO_4 cladding waveguide produced by femtosecond laser writing. The nanosecond waveguide laser operation at 1064 nm has been realized with the maximum average output power of 275 m W and slope efficiency of 37%. In comparison with the systems based on single WS_2 or graphene SA, the lasing Q-switched by a graphene∕WS_2 heterostructure SA possesses advantages of a higher pulse energy and enhanced slope efficiency, indicating the promisingapplications of van der Waals heterostructures for ultrafast photonic devices.

关键词： WS Q-switching of waveguide lasers based on graphene/WS2 van der Waals heterostructure der

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

Mid-infrared waveguiding in three-dimensional microstructured optical waveguides fabricated by femtosecond-laser writing and phosphoric acid etching

引用

Photonics Research 2020年第3期8卷 257-262页

作者： JINMAN LV BINBIN HONG YANG TAN FENG CHEN JAVIER rodríguez VáZQUEZ DE aldana GUO PING WANG Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518052China School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China Departamento Fisica Aplicada Facultad CienciasUniversidad de SalamancaSalamanca 37008Spain

We fabricated a three-dimensional microstructured optical waveguide(MOW)in a single-crystal using femtosecond-laser writing and phosphoric acid etching techniques,and observed excellent midinfrared waveguiding performance with low loss of^0.5 d B∕*** with a periodic arrangement were written inside the yttrium aluminum garnet(YAG)crystal via femtosecond laser inscription,and then etched by the phosphoric acid(H3 PO4)to form hollow *** evolution of the microstructure of tracks was investigated in *** function of the MOW was analyzed by different numerical methods,indicating the proposed MOW can effectively operate in quasi-single-mode pattern in the midinfrared wavelength range,which agrees well with our experiment results.

关键词： microstructure laser wave

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

Multi-gigahertz mode-locked femtosecond Yb:KLuW waveguide lasers

引用

Photonics Research 2022年第11期10卷 2584-2589页

作者： JI EUN BAE XAVIER MATEOS MAGDALENA AGUILÓ FRANCESC DÍAZ JAVIER GARCÍA AJATES CAROLINA ROMERO JAVIER rodrÍguez VÁZQUEZ DE aldana FABIAN ROTERMUND Department of Physics Korea Advanced Institute of Science and Technology(KAIST)34141 DaejeonRepublic of Korea Universitat Rovira i Virgili(URV) Fı´sica i Cristal·lografia de Materials i Nanomaterials(FiCMA)43007 TarragonaSpain Grupo de Investigación en Aplicaciones del Láser y Fotónica University of Salamanca37008 SalamancaSpain

We demonstrate multi-gigahertz continuous-wave mode-locking of a Yb:KLuW waveguide laser. A femtosecondlaser-inscribed Yb:KLuW channel waveguide in an extended laser cavity delivers a fundamentally mode-locked laser near 1030 nm. A tunable few-centimeter-long cavity containing a single-walled carbon nanotube saturable absorber as mode-locker generates self-starting femtosecond pulses with average output powers exceeding210 mW at repetition rates of 2.27, 2.69, and 3.55 GHz. The laser cavity, which includes a wedged waveguide,is extended by using a lens pair that controls the laser fluence on the saturable absorber for reliable mode-locked operation without instability. The presented laser performance, mode-locked up to 3.55 GHz, highly suggests the potential of crystalline Yb:KLuW waveguides for realizing high-power ultrafast lasers with higher GHz repetition rates in a quasi-monolithic cavity.

关键词： waveguide femtosecond mode

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

Intracavity biosensor based on the Nd:YAG waveguide laser: tumor cells and dextrose solutions

引用

Photonics Research 2017年第6期5卷 247-251页

作者： GUANHUA LI HUIYUAN LI RUMEI GONG YANG TAN JAVIER rodríguez VáZQUEZ DE aldana YUPING SUN FENG CHEN Department of Respiration Jinan Central Hospital Affiliated to Shandong University Department of Ophthalmology Jinan Central Hospital Affiliated to Shandong University Department of Oncology Jinan Central Hospital Affiliated to Shandong University School of Physics State Key Laboratory of Crystal Materials Shandong University Departamento Física Aplicada Facultad Ciencias Universidad de Salamanca

This work demonstrates the Nd:YAG waveguide laser as an efficient platform for the bio-sensing of dextrose solutions and tumor cells. The waveguide was fabricated in an Nd:YAG crystal with the cooperation of ultrafast laser writing and ion irradiation. The laser oscillation in the Nd:YAG waveguide is ultrasensitive to the external environment of the waveguide. Even a weak disturbance leads to a large variation of the output power of the *** to this feature, an Nd:YAG waveguide coated with graphene and WSe_2 layers is used as substrate for the microfluidic channel. When the microflow crosses the Nd:YAG waveguide, the laser oscillation in the waveguide is disturbed and induces fluctuation of the output laser. According to the fluctuation, the microflow is detected with a sensitivity of 10 mW/RIU.

关键词： YAG Intracavity biosensor based on the Nd:YAG waveguide laser tumor cells and dextrose solutions Nd

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

Diagnosis and management of brain metastases:an updated review from a radiation oncology perspective

引用

Journal of Cancer Metastasis and Treatment 2019年第7期4卷 12-27页

作者： Gutiérrez-Valencia Enrique Sánchez-rodríguez Irving Balderrama-Ibarra Ricardo Fuentes-LaraJesús Rios-Martínez Alan Vázquez aldana Arroyo Iñigo Bayardo-López Luis Hernández ChávezAllan Puebla-Mora Ana Graciela Nader-Roa Liliana Espíritu-rodríguez Roque Instituto Mexicano del Seguro Social(IMSS) Departamento de Radio-OncologíaCentro Médico Nacional de OccidenteUniversidad de GuadalajaraGuadalajara 44340México Instituto Mexicano del Seguro Social(IMSS) Departamento de Anatomía PatológicaCentro Médico Nacional de OccidenteUniversidad de GuadalajaraGuadalajara 44340México Instituto Mexicano del Seguro Social(IMSS) Departamento de Física MédicaCentro Médico Nacional de OccidenteGuadalajara 44340México

Brain metastasis are the most common intracranial malignancy in the adult population. Their incidence has increased dramatically over the last 20 years, as a result of the increasing number of cases stemming from lung and breast cancer together with the higher cancer survival rates due to diagnostic and therapeutic advances. More than 40%of cancer patients develop brain metastases during the course of their disease: specifically, they appear in 50%of patients with lung cancer, more than 25% of patients with breast cancer, and 20% of patients with melanoma. Diagnosis is made using different imaging approaches, such as computed tomography and magnetic resonance imaging, accompanied by clinical manifestations and a history of malignancy supporting the diagnosis of a brain metastasis. Current treatment options should be oriented to the patient's current performance, the number of intracranial and extracranial lesions, and related factors. Although surgical resection and whole-brain radiotherapy have been standard treatments for many years, numerous treatment modalities have become more easily available and accepted worldwide, producing more favorable and reliable results. Among these is stereotactic radiosurgery, and the latest clinical trials support this treatment.

关键词： Brain metastases whole-brain radiation therapy stereotactic radiosurgery graded prognostic assessment

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

Passively Q-switched femtosecond-laser-written thulium waveguide laser based on evanescent field interaction with carbon nanotubes

引用

Photonics Research 2018年第10期6卷 971-980页

作者： ESROM KIFLE PAVEL LOIKO JAVIER rodríguez VáZQUEZ DE aldana CAROLINA ROMERO AIRáN RóDENAS SUN YUNG CHOI JI EUN BAE FABIAN ROTERMUND VIKTOR ZAKHAROV ANDREY VENIAMINOV MAGDALENA AGUILó FRANCESC DíAZ UWE GRIEBNER VALENTIN PETROV XAVIER MATEOS Universitat Rovira i Virgili Departament Quimica Fisica i Inorgànica Fisica i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMaS Campus Sescelades E-43007 Tarragona Spain ITMO University 49 Kronverkskiy pr. 197101 St. Petersburg Russia Aplicaciones del Láser y Fotónica University of Salamanca 37008 Salamanca Spain Istituto di Fotonica e Nanotecnologie Consiglio Nazionale delle Ricerche (IFN-CNR) Piazza Leonardo da Vinci 32 20133 Milano Italy Department of Physics KAIST 291 Daehak-ro Yuseong-gu 34141 Daejeon South Korea Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Max-Bom-Str. 2a D-12489 Berlin Germany

Surface channel waveguides(WGs) were fabricated in a monoclinic Tm^(3+):KLu(WO_4)_2 crystal by femtosecond direct laser writing(fs-DLW). The WGs consisted of a half-ring cladding with diameters of 50 and 60 μm located just beneath the crystal surface. They were characterized by confocal laser microscopy and μ-Raman spectroscopy,indicating a reduced crystallinity and stress-induced birefringence of the WG cladding. In continuous-wave(CW)mode, under Ti:sapphire laser pumping at 802 nm, the maximum output power reached 171.1 mW at 1847.4 nm,corresponding to a slope efficiency η of 37.8% for the 60 μm diameter WG. The WG propagation loss was0.7 0.3 d B∕cm. The top surface of the WGs was spin-coated by a polymethyl methacrylate film containing randomly oriented(spaghetti-like) arc-discharge single-walled carbon nanotubes serving as a saturable absorber based on evanescent field coupling. Stable passively Q-switched(PQS) operation was achieved. The PQS60 μm diameter WG laser generated a record output power of 150 m W at 1846.8 nm with η = 34.6%. The conversion efficiency with respect to the CW mode was 87.6%. The best pulse characteristics(energy/duration)were 105.6 nJ/98 ns at a repetition rate of 1.42 MHz.

关键词：激光技术波导技术发展现状通讯技术

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

KnoE:A Web Mining Tool to Validate Previously Discovered Semantic Correspondences

引用

Journal of Computer Science & Technology 2012年第6期27卷 1222-1232页

作者： Jorge Martinez-Gil José F.aldana-Montes Department of Computer Languages and Computing Sciences University of MlagaBoulevard Louis Pasteur 35 Mlaga 29071Spain

The problem of matching schemas or ontologies consists of providing corresponding entities in two or more knowledge models that belong to a same domain but have been developed separately. Nowadays there are a lot of techniques and tools for addressing this problem, however, the complex nature of the matching problem make existing solutions for real situations not fully satisfactory. The Google Similarity Distance has appeared recently. Its purpose is to mine knowledge from the Web using the Google search engine in order to semantically compare text expressions. Our work consists of developing a software application for validating results discovered by schema and ontolog2/ matching tools using the philosophy behind this distance. Moreover, we are interested in using not only Google, but other popular search engines with this similarity distance. The results reveal three main facts. Firstly, some web search engines can help us to validate semantic correspondences satisfactorily. Secondly there are significant differences among the web search engines. And thirdly the best results are obtained when using combinations of the web search engines that we have studied.

关键词： database integration data and knowledge engineering similarity distance

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

Gastrointestinal manifestations of systemic sclerosis:An updated review

引用

World Journal of Clinical Cases 2021年第22期9卷 6201-6217页

作者： Adan Luquez-Mindiola Alexis Javier Atuesta Andres Jose Gómez-aldana Department of Gastroenterology Gut MédicaBogota 11711 Colombia Department of Internal Medicine Universidad Nacional de ColombiaBogota 11711Colombia Department of Endoscopy Santa Fe Foundation of Bogotá(Fundación Santa Fe de Bogotá)Bogotá11711Colombia Faculty of Medicine Universidad de los AndesBogota 11711Colombia

Systemic sclerosis is an autoimmune disease characterized by vascular disease,fibrosis of the skin,and internal organ *** involvement is the most frequent complication of internal organs,impacting up to 90%of *** involvement can affect any region of the gastrointestinal tract from the mouth to the anus,with a predominance of disorders being observed at the level of the upper digestive *** gastrointestinal involvement primarily involves the esophagus,small bowel,and *** severity of gastrointestinal involvement affects quality of life and is a marker of worse prognosis and mortality in these *** this review,we describe the current findings regarding gastrointestinal involvement by this entity.

关键词： Systemic sclerosis Gastrointestinal Diagnosis Treatment

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

Adsorption of pharmaceutical pollutants on ZnCl_(2)-activated biochar from corn cob:Efficiency,selectivity and mechanism

引用

Journal of Bioresources and Bioproducts 2024年第1期9卷 58-73页

作者： Christian F.Varela L.C.Moreno-aldana Yazmin Yaneth Agámez-Pertuz Department of Chemistry National University of ColombiaAv.Carrera 30 No.45-03BogotáD.C.Colombia Department of Biology and Chemistry University of the Llanoskm 12 road to Puerto LópezVillavicencioColombia

The occurrence of pharmaceuticals in water bodies and drinking water poses risks for the envi-ronment and human health,thus it is necessary to study methodologies that allow the efficient removal of these *** this work,corn cob-derived biochar was obtained by ZnCl_(2)-activation,and subsequent carbonization at 700℃.The effect of contact time,temperature,pH,and initial concentration on the adsorption capacity of acetaminophen(ACE)and amoxicillin(AMX)was determined through batch *** addition,the kinetics,isotherms,and ther-modynamics parameters were *** activated biochar exhibited a maximum adsorp-tion capacity of 332.08 mg/g for ACE and 175.86 mg/g for *** adsorption kinetics and adsorption isotherm of ACE corresponded to the pseudo-second order and Langmuir model,***,pseudo-first-order kinetics and the Freundlich isotherm model were well-fitted to AMX *** ACE and AMX co-adsorption had a synergistic effect on AMX but an antagonistic effect on ACE removal,achieving a maximum adsorption capacity of 193.51 and 184.58 mg/g,*** the other hand,fixed-bed column experiments showed that the adsorption capacity depends on the influent concentration,and the breakthrough curve fits the Thomas and Yoon-Nelson *** mechanism adsorption studies showed that surface inter-actions(hydrogen bonding formation and n-𝜋interactions)are the main driving forces for the adsorption process,and pore filling is the rate-limiting *** this way,the prepared biochar exhibits a high potential for the adsorption of pharmaceutical compounds from water.

关键词： Biochar Adsorption Acetaminophen Amoxicillin Wastewater treatment

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

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

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：