Determining the Feasibility of Traffic Management Through Mobile Applications in China

The rapid urbanization of China causes traffic problems in its cities. This Interactive Qualifying Project (IQP) aims to determine the feasibility of improving Chinese traffic conditions by applying Smart City initiatives, specifically through mobile applications. The project researches the functions of popular mobile applications for traffic management in the United States and China. With guidance from our sponsor, Dr. Lu Huang of the Zhejiang Smart City Research Center, we surveyed the public from both countries. We explore the current traffic situations in the United States and China, and determine the feasibility of each application’s function. This project provides direction for the development of future Chinese mobile applications and sustainable traffic management research

Implementing a New Drying Oven at Pacific Can

The largest aluminum can manufacturer in China, Pacific Can’s production line washes up to 1500 cans per minute while its oven only dries 1200 cans per minute. Our team collaborated with students from Beijing University of Chemical Technology to optimize Pacific Can’s oven to dry an additional 300 cans per minute. A prototype drying oven was designed and built and a scaling analysis was performed to prove that it is feasible for use by Pacific Can

Diseño de un aerogenerador con fines didácticos

En el presente artículo, se muestra la propuesta de diseño de un aerogenerador para las condiciones meteorológicas del municipio de Cuautitlán Izcalli, Estado de México. Dicho aerogenerador servirá para demostrar los beneficios de aprovechar las energías renovables, en este caso el viento, para producir energía eléctrica, obteniendo reducción en el consumo de combustibles fósiles y emisión de gases de efecto invernadero.Presently article, the proposal of design of an aerogenerador is shown for the meteorological conditions of the municipality of Cuautitlán Izcalli, State of Mexico. This aerogenerador will be good to demonstrate the benefits of taking advantage of the renewable energy, in this case the wind, to produce electric power, obtaining reduction in the consumption of fossil fuels and emission of gases of effect hothouse.Fil: Hernandez, Victor. Universidad Nacional Autónoma de México; MéxicoFil: González, Gilberto. Universidad Nacional Autónoma de México; MéxicoFil: Cruz, Alberto O.. Universidad Nacional Autónoma de México; MéxicoFil: Morillón, David. Universidad Nacional Autónoma de México; MéxicoFil: Mesa, Nestor Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; Argentin

Apoptosis induction in Jurkat cells and sCD95 levels in women's sera are related with the risk of developing cervical cancer

<p>Abstract</p> <p>Background</p> <p>Currently, there is clear evidence that apoptosis plays an important role in the development and progression of tumors. One of the best characterized apoptosis triggering systems is the CD95/Fas/APO-1 pathway; previous reports have demonstrated high levels of soluble CD95 (sCD95) in serum of patients with some types of cancer. Cervical cancer is the second most common cancer among women worldwide. As a first step in an attempt to design a minimally invasive test to predict the risk of developing cervical cancer in patients with precancerous lesions, we used a simple assay based on the capacity of human serum to induce apoptosis in Jurkat cells. We evaluated the relationship between sCD95 levels and the ability to induce apoptosis in Jurkat cells in cervical cancer patients and controls.</p> <p>Methods</p> <p>Jurkat cells were exposed to serum from 63 women (20 healthy volunteers, 21 with cervical intraepithelial neoplasia grade I [CIN 1] and 22 with cervical-uterine carcinoma). The apoptotic rate was measured by flow cytometry using Annexin-V-Fluos and Propidium Iodide as markers. Serum levels of sCD95 and soluble CD95 ligand (sCD95L) were measured by ELISA kits.</p> <p>Results</p> <p>We found that serum from almost all healthy women induced apoptosis in Jurkat cells, while only fifty percent of the sera from women with CIN 1 induced cell death in Jurkat cells. Interestingly, only one serum sample from a patient with cervical-uterine cancer was able to induce apoptosis, the rest of the sera protected Jurkat cells from this killing. We were able to demonstrate that elimination of Jurkat cells was mediated by the CD95/Fas/Apo-1 apoptotic pathway. Furthermore, the serum levels of sCD95 measured by ELISA were significantly higher in women with cervical cancer.</p> <p>Conclusion</p> <p>Our results demonstrate that there is a strong correlation between low levels of sCD95 in serum of normal women and higher apoptosis induction in Jurkat cells. We suggest that an analysis of the apoptotic rate induced by serum in Jurkat cells and the levels of sCD95 in serum could be helpful during the prognosis and treatment of women detected with precancerous lesions or cervical cancer.</p

Estimating the global conservation status of more than 15,000 Amazonian tree species

Estimates of extinction risk for Amazonian plant and animal species are rare and not often incorporated into land-use policy and conservation planning. We overlay spatial distribution models with historical and projected deforestation to show that at least 36% and up to 57% of all Amazonian tree species are likely to qualify as globally threatened under International Union for Conservation of Nature (IUCN) Red List criteria. If confirmed, these results would increase the number of threatened plant species on Earth by 22%. We show that the trends observed in Amazonia apply to trees throughout the tropics, and we predict thatmost of the world’s >40,000 tropical tree species now qualify as globally threatened. A gap analysis suggests that existing Amazonian protected areas and indigenous territories will protect viable populations of most threatened species if these areas suffer no further degradation, highlighting the key roles that protected areas, indigenous peoples, and improved governance can play in preventing large-scale extinctions in the tropics in this century

Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types

Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

Connections : safe spaces for women and youth in Latin America and The Caribbean

RESUMEN: Este libro se puede leer en muchos niveles. Uno de ellos puede no ser muy obvio para aquellos que están acostumbrados a leer sobre violencia e inseguridad en América Latina. Es el nivel que le da a este libro un estatus de originalidad y una contribución que va más allá de la región: el ser una forma de conocimiento destinada no solo a interpretar el mundo, sino a cambiarlo […], visibiliza la importancia de un proceso de investigación ajustado al tipo de conocimiento que produce. Aquí se conectan el proceso y el resultado, lo que debería propiciar un debate más amplio con respecto a cómo y qué sabemos de la naturaleza de la violencia y la agencia social para reducirla […]. Esta visión es particularmente relevante en contextos donde el Estado reproduce la violencia, con terribles impactos, en especial en periferias excluidas. […] El proceso de investigación abordado en este libro transgredió muchas fronteras. Hubo fronteras entre países, barreras lingüísticas, fronteras en torno a la educación, el conocimiento y la experiencia, y entre etnias, géneros y generaciones. […] este proceso reunió a académicos, activistas y líderes comunitarios de cinco países de América Latina y uno del Caribe, incluyendo comunidades indígenas en México y Guatemala […]. La violencia está en el tiempo y en el espacio y se reproduce entre las generaciones en diversos espacios de socialización. Este proceso de investigación que trasciende las fronteras, plantea una discusión que atraviesa los diferentes casos sobre cómo los déficits y las desigualdades materiales, las violencias estatales en nombre de la ‘seguridad’, las especificidades culturales, de género y generacionales de la experiencia y la comprensión de la violencia, así como las diversas formas de criminalidad, se cruzan y se reproducen a través del tiempo y el espacio. Jenny Pearce, investigadora y profesora en el Latin American and Caribbean Centre (LACC) de la London School of Economics and Political ScienceABSTRACT: This book can be read on many levels. One level may not be so obvious to those who are used to reading about violence and insecurity in Latin America. It is the level which gives this book a claim to true originality and a contribution beyond the region. This contribution is to form of scholarship aimed not only to interpret the world but to change it […], this text visibilizes the significance of the research process to the kind of knowledge that is produced. It connects process and outcome, and this should start a wider debate about how as well as what we know about the nature of violence and the social agency to reduce it […]. This is particularly relevant in contexts where the State reproduces violence, with terrible impacts on the margins. The research process discussed in this book transgressed many boundaries. There were intercountry borders, linguistic barriers, boundaries around education, knowledge and experience and between ethnicities, genders and generations. […] the research process brought together scholars and community activists and actors from five Latin American and one Caribbean country. And within Latin America there were indigenous communities in Mexico and Guatemala who participated […]. Violence is located in time and space. It is reproduced inter-generationally through varied socialisation spaces. The boundary crossing research process, raises cross case discussion about how material deficits and inequalities, state violences in the name of ‘security’, cultural, gender and generational specificities of experience and understanding of violence, and varied forms of criminality, intersect and reproduce through time and space. Professor Jenny Pearce. Latin American and Caribbean Centre (LACC), London School of Economics and Political Scienc

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements