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Search Results: 1 - 10 of 130643 matches for " Li Li;Camargo "
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Statistical voxel-wise analysis of ictal SPECT reveals pattern of abnormal perfusion in patients with temporal lobe epilepsy
Amorim, Bárbara Juarez;Etchebehere, Elba Cristina Sá de Camargo;Camargo, Edwaldo Eduardo;Rio, Pablo Augusto;Bonilha, Leonardo;Rorden, Chris;Li, Li Min;Cendes, Fernando;
Arquivos de Neuro-Psiquiatria , 2005, DOI: 10.1590/S0004-282X2005000600014
Abstract: objective: to investigate the pattern of perfusion abnormalities in ictal and interictal brain perfusion spect images (bsi) from patients with temporal lobe epilepsy (tle). method: it was acquired interictal and ictal bsi from 24 patients with refractory tle. bsis were analyzed by visual inspection and statistical parametric mapping (spm2). statistical analysis compared the patients group to a control group of 50 volunteers. the images from patients with left-tle were left-right flipped. results: it was not observed significant perfusional differences in interictal scans with spm. ictal bsi in spm analysis revealed hyperperfusion within ipsilateral temporal lobe (epileptogenic focus) and also contralateral parieto-occipital region, ipsilateral posterior cingulate gyrus, occipital lobes and ipsilateral basal ganglia. ictal bsi also showed areas of hypoperfusion. conclusion: in a group analysis of ictal bsi of patients with tle, voxel-wise analysis detects a network of distant regions of perfusional alteration which may play active role in seizure genesis and propagation.
Beneficial Experience from Teaching and Education to Research and Development  [PDF]
Li Li
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.37B039
Abstract:

Teaching and Education (T&E) constitute the most important activity in knowledge transfer from generation to generation. This can explain why government organizations consider the training of highly qualified personnel as one of the most important criteria in the selection of research and development (R&D) grant applications. A university professor should thus not only play the role of researcher, but also that of teacher. T&E and R&D combine to form an inseparable relationship for university professors. By shooting for excellence in T&E, we could get a new perception of a familiar field or initiate a brand new field altogether, which would in turn enhance our research. The quest for excellence in R&D leads to deeper and better understanding of materials taught, and progress in R&D enriches our T&E endeavors. Here, the author shares a beneficial experience from T&E to R&D.

Brain SPECT in mesial temporal lobe epilepsy: comparison between visual analysis and SPM
Amorim, Bárbara Juarez;Ramos, Celso Darío;Santos, Allan Oliveira dos;Lima, Mariana da Cunha Lopes de;Min, Li Li;Camargo, Edwaldo Eduardo;Cendes, Fernando;Etchebehere, Elba Cristina Sá de Camargo;
Arquivos de Neuro-Psiquiatria , 2010, DOI: 10.1590/S0004-282X2010000200001
Abstract: objective: to compare the accuracy of spm and visual analysis of brain spect in patients with mesial temporal lobe epilepsy (mtle). method: interictal and ictal spects of 22 patients with mtle were performed. visual analysis were performed in interictal (visual(inter)) and ictal (visual(ictal/inter)) studies. spm analysis consisted of comparing interictal (spm(inter)) and ictal spects (spm(ictal)) of each patient to control group and by comparing perfusion of temporal lobes in ictal and interictal studies among themselves (spm(ictal/inter)). results: for detection of the epileptogenic focus, the sensitivities were as follows: visual(inter)=68%; visual(ictal/inter)=100%; spm(inter)=45%; spm(ictal)=64% and spm(ictal/inter)=77%. spm was able to detect more areas of hyperperfusion and hypoperfusion. conclusion: spm did not improve the sensitivity to detect epileptogenic focus. however, spm detected different regions of hypoperfusion and hyperperfusion and is therefore a helpful tool for better understand pathophysiology of seizures in mtle.
Reporting on health-related research in two prestigious Brazilian newspapers
Teixeira, Ricardo Afonso;Carlini, Marcela;Sousa, Arthur de Carvalho Jatobá e;Fernandes, Paula Teixeira;Camargo, Vera Regina Toledo;Vogt, Carlos;Li, Li Min;
Clinics , 2012, DOI: 10.6061/clinics/2012(03)10
Abstract: objectives: the dissemination of health-related news through newspapers can influence the behavior of patients and of health care providers. we conducted a study to analyze the characteristics of health-related research published by two leading brazilian newspapers. method: we retrospectively evaluated health-related news published in the electronic versions of the newspapers folha de s?o paulo and o estado de s?o paulo over a period of three months (july through september, 2009). only articles mentioning medical research were included. the articles were categorized according to topic, source, study location and the nature of the headline. we also analyzed the presence of background information on the topic, citations of medical periodicals, national contextualization and references to products or companies. results: scientific research articles corresponded to 57% and 20% of health-related articles published by folha de s?o paulo and o estado de s?o paulo, respectively. folha de s?o paulo published significantly more articles about national studies, and most articles were written by its own staff. in contrast, most articles in o estado de s?o paulo came from news agencies. folha de s?o paulo also better contextualized its reports for brazilian society. o estado de s?o paulo tended to cite the name of the periodical in which the study was published more frequently, but their articles lacked national contextualization. conclusion: the results showed a significant difference in the way in which the studied newspapers report on health-related research. folha de s?o paulo tends to write its own articles and more frequently publishes the results of national research, whereas o estado de s?o paulo publishes articles that originate in news agencies, most of which have little national contextualization.
A Causality Analysis of Coal Consumption and Economic Growth for China and India  [PDF]
Jinke Li, Zhongxue Li
Natural Resources (NR) , 2011, DOI: 10.4236/nr.2011.21007
Abstract: China and India are the two countries with the strongest economic growth in the world. Meanwhile they consume much of the global coal to fuel their economic development. With coal burning as a major factor contributing to global greenhouse gas emissions, China and India are confronted with a dilemma of economic growth and environment protection. Will coal consumption reduction cause economic shocks? Is there a causal relationship between coal consumption and economic growth in China and India? In this paper Granger causality tests were used to examine the relationship between coal consumption and GDP in China and India, using data for the period from 1965 to 2006. It was found that a unidirectional causality from GDP to coal consumption existed in China while a unidirectional causality from coal consumption to GDP did in India. Therefore, developing cleaner and more efficient technologies is essential to reduce their CO2 emissions to reach sustainable development.
An Investigation and Analysis of Information Overload in Manager's Work  [PDF]
Tao Li, Min Li
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.31008
Abstract: The problem of information overload in management field has been receiving increasing attention, while there are less empirical researches now. This paper proposes a conceptual model and some operational variables, in which information overload is as an intervening variable between the factors of causes and impacts. An investigation and analysis has been conducted from a selected sample of managers. This research suggests that work efficiency and work quality are both not strongly connected with information overload. We also find that the main causes of information overload are the work interruption and work time pressure but the amount of information.
Selection Advantage Pattern of International Sci-Tech Cooperation and Empirical Analysis  [PDF]
Li Li, Bin Yu
Journal of Service Science and Management (JSSM) , 2011, DOI: 10.4236/jssm.2011.41006
Abstract: Traditional international sci-tech cooperation theories mainly focus on the ability and advantage owned by cooperative parties, and according to which to guide the direction of international science and technology cooperation. Based on the integration of traditional theories of international science and technology cooperation and concrete practice, this paper proposes the selection advantage pattern and matching mechanism, which comprehensively take cooperator advantages, specification of project and change in circumstance into account and will play a guiding role in terms of determining the key country or region with which to prior carry out international science and technology cooperation. This paper also gives an analysis of the current status of industry development in Guangdong province and the research upon competitiveness evaluation of the world's related leading technology, puts forward corresponding countermeasures and suggestions on the science and technology cooperation patterns and approaches in terms of technological level and resources of Guangdong province.
Soil reinforcement by a root system and its effects on sediment yield in response to concentrated flow in the loess plateau  [PDF]
Peng Li, Zhanbin Li
Agricultural Sciences (AS) , 2011, DOI: 10.4236/as.2011.22013
Abstract: The importance of roots in soil conservation has long been underestimated due to a lack of sys-tematic studies conducted to evaluate root dis-tribution patterns and their effects on soil ero-sion. Current knowledge regarding root mor-phology and its impact on soil erosion by water is limited; therefore, detailed analysis of the role that root systems play in controlling soil ero-sion is needed. In this study, stratified runoff scouring at different soil depths in the field was conducted in a grassland area. The results in-dicated that both root biomass and soil wa-ter-stable aggregates decreased as soil depth increased at all three sites, while there was al-most no change in soil bulk density at 1.3g/cm3. Sediment yields under different runoff dis-charge at different sites showed similar trends, and the sediment yield increased as the soil depth increased at all three sites. Further analysis revealed that close relationships ex-isted between root biomass and the amount of water-stable aggregates and soil organic matter content, and that these factors greatly influ-enced soil erosion. Based on the data generated by the experiment, equations describing the relationship between sediment production at different soil depths and root biomass were determined.
Second-Order Volition and Conflict between Desires  [PDF]
Hengxi Li, Hengwei Li
Open Journal of Philosophy (OJPP) , 2012, DOI: 10.4236/ojpp.2012.21004
Abstract: In Freedom of the Will and the Concept of a Person, Harry Frankfurt put forward a theory that what is essential to be a person is second-order volition. The notion of second-order volition can be used as a key conceptual tool in understanding the conflict between desires. By means of the notion, this paper argues that the conflict between desires in our minds lies in the conflict between second-order volitions, other than the conflict between first-order desires. Based on this claim, this paper suggests that, due to the misunderstanding of the nature of the conflict between desires, the analysis of unwilling addict and wanton addict given by Frankfurt is thus wrong, and in his follow-up articles he made wrong description of the phenomenon concerning the conflict between desires.
A Fixed-Phase Quantum Search Algorithm with More Flexible Behavior  [PDF]
Xin Li, Panchi Li
Journal of Quantum Information Science (JQIS) , 2012, DOI: 10.4236/jqis.2012.22006
Abstract: When the Grover’s algorithm is applied to search an unordered database, the probability of success usually decreases with the increase of marked items. To address this phenomenon, a fixed-phase quantum search algorithm with more flexible behavior is proposed. In proposed algorithm, the phase shifts can be fixed at the different values to meet the needs of different practical problems. If research requires a relatively rapid speed, the value of the phase shifts should be appropriately increased, if search requires a higher success probability, the value of the phase shifts should be appropriately decreased. When the phase shifts are fixed at , the success probability of at least 99.38% can be obtained in iterations.
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