scholarly journals Chemical Composition of Bulk Precipitation and Its Toxicity Potential Index in the Metropolitan Area of Monterrey, Northeastern Mexico

Environments ◽  
2020 ◽  
Vol 7 (12) ◽  
pp. 106
Author(s):  
Darithsa Loya-González ◽  
Daniel López-Serna ◽  
Juan Manuel Alfaro-Barbosa ◽  
Antonio López-Reyes ◽  
Humberto González-Rodríguez ◽  
...  
Keyword(s):  
Metropolitan Area ◽  
Environmental Protection Agency ◽  
Reference Value ◽  
Metallurgical Industry ◽  
Environmental Variable ◽  
Average Concentration ◽  
Potential Index ◽  
Toxicity Potential ◽  
One Year ◽  
The University

The rainwater chemistry within the Metropolitan Area of Monterrey (MAM) was studied during a one-year period (January 2019–January 2020) in seven sampling sites. The metal concentration of Zn, Fe, Cd, Cu, Ni, and Mn was analyzed in bulk samples and the toxicity potential (TP) was calculated for each metal. A canonical correspondence analysis (CCA) was applied to identify the relationship between environmental variables and metals concentrations. An average of 26.6 ± 10 mm of rainfall was obtained. A mean pH of 7.2 ± 0.3 and a mean electrical conductivity of 177.8 ± 8.7 µS cm−1 were observed. The average concentration of metals in all sites follows a descending order of Fe> Zn > Mn > Cu > Ni > Cd. The university site shows the highest averages of Fe, Zn, Cu, and Mn, which is attributed to its proximity to the metallurgical industry. The TP value of Cd reflects a risk in all sites and Fe only for the Universidad, Obispado, Pastora, and Santa Catarina sites, using as a reference value the Environmental Protection Agency (EPA) Drinking Water Regulations and Mexican norm NOM-127-SSA1-1994. The CCA analysis showed that only Ni and Cd had a strong correlation with the environmental variable of relative humidity of air.

Some Biological Applications of High Voltage Electron Microscopy

1974 ◽  
Vol 32 ◽  
pp. 298-299
Author(s):  
Hans Ris
Keyword(s):  
High Voltage ◽  
Chromosome Structure ◽  
Nerve Fibers ◽  
Good Resolution ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
University Of Wisconsin ◽  
High Voltage Electron ◽  
One Year ◽  
The University

The High Voltage Electron Microscope Laboratory at the University of Wisconsin has been in operation a little over one year. I would like to give a progress report about our experience with this new technique. The achievement of good resolution with thick specimens has been mainly exploited so far. A cold stage which will allow us to look at frozen specimens and a hydration stage are now being installed in our microscope. This will soon make it possible to study undehydrated specimens, a particularly exciting application of the high voltage microscope.Some of the problems studied at the Madison facility are: Structure of kinetoplast and flagella in trypanosomes (J. Paulin, U. of Georgia); growth cones of nerve fibers (R. Hannah, U. of Georgia Medical School); spiny dendrites in cerebellum of mouse (Scott and Guillery, Anatomy, U. of Wis.); spindle of baker's yeast (Joan Peterson, Madison) spindle of Haemanthus (A. Bajer, U. of Oregon, Eugene) chromosome structure (Hans Ris, U. of Wisconsin, Madison). Dr. Paulin and Dr. Hanna are reporting their work separately at this meeting and I shall therefore not discuss it here.

Prospective evaluation for gastrointestinal bleedings at the University Hospital St. Pölten – one year of follow-up

2019 ◽  
Author(s):  
M Stättermayer ◽  
F Riedl ◽  
S Bernhofer ◽  
A Stättermayer ◽  
A Mayer ◽  
...  
Keyword(s):  
University Hospital ◽  
Prospective Evaluation ◽  
One Year ◽  
The University

Towards an interdisciplinary knowledge exchange model

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Santiago DE FRANCISCO ◽  
Diego MAZO
Keyword(s):  
Design Research ◽  
Knowledge Exchange ◽  
Academic Research ◽  
Innovation Process ◽  
The United States ◽  
Design Environment ◽  
Interdisciplinary Knowledge ◽  
One Year ◽  
The University ◽  
Common Situation

Universities and corporates, in Europe and the United States, have come to a win-win relationship to accomplish goals that serve research and industry. However, this is not a common situation in Latin America. Knowledge exchange and the co-creation of new projects by applying academic research to solve company problems does not happen naturally.To bridge this gap, the Design School of Universidad de los Andes, together with Avianca, are exploring new formats to understand the knowledge transfer impact in an open innovation network aiming to create fluid channels between different stakeholders. The primary goal was to help Avianca to strengthen their innovation department by apply design methodologies. First, allowing design students to proposed novel solutions for the traveller experience. Then, engaging Avianca employees to learn the design process. These explorations gave the opportunity to the university to apply design research and academic findings in a professional and commercial environment.After one year of collaboration and ten prototypes tested at the airport, we can say that Avianca’s innovation mindset has evolved by implementing a user-centric perspective in the customer experience touch points, building prototypes and quickly iterate. Furthermore, this partnership helped Avianca’s employees to experience a design environment in which they were actively interacting in the innovation process.

Bankruptcy Model Construction and its Limitation in Input Data Quality

2019 ◽  
Vol 10 (2) ◽  
pp. 117-125
Author(s):  
Dana Kubíčková ◽  
◽  
Vladimír Nulíček ◽  
Keyword(s):  
Data Quality ◽  
Normal Distribution ◽  
Input Data ◽  
Model Construction ◽  
The Third ◽  
Third Stage ◽  
Discriminant Analyses ◽  
One Year ◽  
The University ◽  
Multivariate Discriminant

The aim of the research project solved at the University of Finance and administration is to construct a new bankruptcy model. The intention is to use data of the firms that have to cease their activities due to bankruptcy. The most common method for bankruptcy model construction is multivariate discriminant analyses (MDA). It allows to derive the indicators most sensitive to the future companies’ failure as a parts of the bankruptcy model. One of the assumptions for using the MDA method and reassuring the reliable results is the normal distribution and independence of the input data. The results of verification of this assumption as the third stage of the project are presented in this article. We have revealed that this assumption is met only in a few selected indicators. Better results were achieved in the indicators in the set of prosperous companies and one year prior the failure. The selected indicators intended for the bankruptcy model construction thus cannot be considered as suitable for using the MDA method.

scholarly journals Probabilistic Assessment of Roof Snow Load and the Calibration of Shape Coefficients in the Eurocodes

2021 ◽  
Vol 11 (7) ◽  
pp. 2984
Author(s):  
Pietro Croce ◽  
Paolo Formichi ◽  
Filippo Landi
Keyword(s):  
Conversion Factor ◽  
Reference Value ◽  
Construction Site ◽  
Probability Of Exceedance ◽  
Snow Load ◽  
Shape Coefficient ◽  
Annual Probability ◽  
Wind Exposure ◽  
Design Values ◽  
One Year

In modern structural codes, the reference value of the snow load on roofs is commonly given as the product of the characteristic value of the ground snow load at the construction site multiplied by the shape coefficient. The shape coefficient is a conversion factor which depends on the roof geometry, its wind exposure, and its thermal properties. In the Eurocodes, the characteristic roof snow load is either defined as the value corresponding to an annual probability of exceedance of 0.02 or as a nominal value. In this paper, an improved methodology to evaluate the roof snow load characterized by a given probability of exceedance (e.g., p=0.02 in one year) is presented based on appropriate probability density functions for ground snow loads and shape coefficients, duly taking into account the influence of the roof’s geometry and its exposure to wind. In that context, the curves for the design values of the shape coefficients are provided as a function of the coefficient of variation (COVg) of the yearly maxima of the snow load on the ground expected at a given site, considering three relevant wind exposure conditions: sheltered or non-exposed, semi-sheltered or normal, and windswept or exposed. The design shape coefficients for flat and pitched roofs, obtained considering roof snow load measurements collected in Europe during the European Snow Load Research Project (ESLRP) and in Norway, are finally compared with the roof snow load provisions given in the relevant existing Eurocode EN1991-1-3:2003 and in the new version being developed (prEN1991-1-3:2020) for the “second generation” of the Eurocodes.

scholarly journals Future Healthcare Workers and Hepatitis B Vaccination: A New Generation

2021 ◽  
Vol 18 (15) ◽  
pp. 7783
Author(s):  
Andrea Trevisan ◽  
Paola Mason ◽  
Annamaria Nicolli ◽  
Stefano Maso ◽  
Marco Fonzo ◽  
...  
Keyword(s):  
Hepatitis B ◽  
Antibody Titer ◽  
Healthcare Workers ◽  
Lower Percentage ◽  
Hepatitis B Vaccination ◽  
High Morbidity ◽  
One Year ◽  
Mandatory Vaccination ◽  
University Of Padua ◽  
The University

Before the introduction of universal vaccination, hepatitis B caused high morbidity and mortality, especially among healthcare workers. In the present study, the immune status against hepatitis B was assessed in a cohort of 11,188 students of the degree courses of the School of Medicine of the University of Padua (Italy) who had been subjected to mandatory vaccination in childhood or adolescence and who will be future healthcare workers. The variables that influence the antibody response to vaccination are mainly the age at which the vaccine was administered and sex. If vaccination was administered before one year of age, there is a high probability (around 50%) of having an antibody titer lower than 10 IU/L compared to those vaccinated after one year of age (12.8%). The time between vaccine and analysis is not decisive. Furthermore, female sex, but only if vaccination was administered after one year of age, shows a significant (p = 0.0008) lower percentage of anti-HBs below 10 IU/L and a greater antibody titer (p < 0.0001). In conclusion, the differences related to the age of vaccination induce more doubts than answers. The only plausible hypothesis, in addition to the different immune responses (innate and adaptive), is the type of vaccine. This is not easy to verify because vaccination certificates rarely report it.

scholarly journals XXIII.—The Clyde Sea Area

1892 ◽  
Vol 36 (3) ◽  
pp. 641-729 ◽  
Author(s):  
Hugh Robert Mill
Keyword(s):  
The West ◽  
Experimental Physics ◽  
University Of Edinburgh ◽  
Marine Station ◽  
The Government ◽  
Government Grant ◽  
One Year ◽  
The University ◽  
Clyde Sea ◽  
Sea Area

The fjord-like inlets or sea-lochs which form so conspicuous a feature in the scenery of the west of Scotland stand in marked contrast to the shallow, low-shored firths of the east coast. When Dr John Murray decided to extend the physical and biological work of the Scottish Marine Station to the west coast he foresaw that many interesting conclusions were likely to be derived from the study of these isolated sea-basins. Various papers, published by him and other workers, contain preliminary discussions of many of the phenomena observed, fully justifying the anticipations which had been formed.For one year my work, as described in this paper, was carried out under the provisions of an Elective Fellowship in Experimental Physics of the University of Edinburgh, to which I had been elected in 1886; and subsequently by a personal grant from the Government Grant Committee for Scientific Research. The Committee also devoted several sums of money in payment of expenses in compiling this discussion. The Scottish Marine Station throughout gave the use of the steam-yacht “Medusa,” and the necessary apparatus.

scholarly journals Samuel Phillips Bedson, 1886-1969

1970 ◽  
Vol 16 ◽  
pp. 14-35
Keyword(s):  
Public Schools ◽  
Secondary Education ◽  
General Education ◽  
Grammar School ◽  
Preparatory School ◽  
Postgraduate Study ◽  
Manual Skills ◽  
One Year ◽  
The University ◽  
Newcastle Upon Tyne

Samuel Phillips Bedson was born on 1 December 1886 in Newcastle upon Tyne. His father, Peter Phillips Bedson, was born in Manchester, educated at Manchester Grammar School and studied chemistry under Sir Henry Roscoe at Owens College, later Manchester University. After a period of postgraduate study at the University of Bonn, Peter Bedson returned to this country and was appointed to the Chair of Chemistry in the University of Durham (Durham College of Science, Newcastle upon Tyne). He held this Chair for 37 years until his retirement in 1921. His wife was the daughter of Samuel Hodgkinson, cotton spinner (Hollins Mill Co.) of Marple, Cheshire. There were three children of this marriage, Sam being the second. Along with his elder brother and four other boys he was educated privately until the age of ten. Then after one year at Newcastle Preparatory School he went to Abbotsholme School in Derbyshire where he spent the next six years. This school had been founded by Cecil Reddie as an experiment in secondary education because of his dissatisfaction with the narrowness of the curriculum in most Public Schools. Reddie planned ‘a programme of general education catering for physical and manual skills, for artistic and imaginative development, for literary and intellectual growth and for moral and religious training’.

scholarly journals Investigation of Some Qualitative Characteristics of Sludge Produced in Hamadan Wastewater Treatment Plant and Its Application in Agricultural Lands

2019 ◽  
Vol 6 (1) ◽  
pp. 1-7
Author(s):  
Reza Shokoohi ◽  
Samira Moradi ◽  
Zhila Ghavami ◽  
Azam Nadali ◽  
Raheleh Amiri
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Environmental Protection Agency ◽  
Treatment Plant ◽  
The United States ◽  
Average Concentration ◽  
Agricultural Lands ◽  
Secondary Sludge ◽  
Qualitative Characteristics

In this study, qualitative characteristics of the sludge produced in Hamadan wastewater treatment plant and the feasibility of its application in agricultural lands were investigated. Samples were taken from the primary and secondary sludge and indices such as VS/TS, PH, TKN, COD, TKN, SOUR, Na, Ca, SAR, heavy metals and biological properties (the mean fecal coliform count and the number of parasitic eggs) were measured. The results were compared with the United States Environmental Protection Agency (US EPA) standards (40 FCR-503). The results showed that the VS/TS ratio of the raw sludge was 0.8, 0.55, and 0.55 and that of the secondary sludge was 0.65, 0.28, and 0.32 for fall, winter, and summer, respectively. The average concentration of COD, TKN, SOUR, Na, and Ca for the initial sludge was 51283, 107, 0.50, 609, and 952 and for secondary sludge, it was 35595, 81, 4.90, 306, and 493 mg/L, respectively. The MPN for primary and secondary sludge was determined to be 19.83 × 106 and 186 × 106 , respectively and the average number of parasite eggs in primary and secondary sludge was 7.05 and 7.2 in 4 g of dry solids. Entamoeba coli had the highest number of parasite. The results of this study showed that the highest concentration of heavy metals in the sludge was 21396 mg/kg. The values obtained for the above-mentioned indices and heavy metals were in standards range. The results of this study show that none of the primary and secondary sludge samples has been properly stabilized. The values obtained for biological characteristics of sludge were not in the standard range. Therefore, it was revealed that the use of sludge for agriculture needed more stabilization.

scholarly journals Towards a Methodology of the Intercultural Teaching of Hungarian Literature to Speakers of Hungarian as a Second/Foreign Language

2014 ◽  
Vol 6 ◽  
pp. 148-163
Author(s):  
Györgyi Horváth
Keyword(s):  
Language Learners ◽  
Cultural Awareness ◽  
Teaching Experience ◽  
Teaching Literature ◽  
Cultural Challenges ◽  
Self Reflection ◽  
Hungarian Literature ◽  
One Year ◽  
Hungarian Language ◽  
The University

Although there are many Hungarian Studies scholars teaching literature to Hungarian language learners around the world, there are practically no resources available about what is happening in these classes, and what linguistic, literary and cultural challenges they pose for students and teachers. In her study, Györgyi Horváth discusses her ten-year teaching experience as a teacher of Hungarian literature to Hungarian language learners within the Hungarian Studies Program, a one-year off-site university program offered to international students, accredited by the University of Pécs, and hosted by the Balassi Institute, Budapest. She discusses the institutional and program framework she worked in, gives a detailed account of the linguistic, literary and especially the cultural competencies that were in play in these courses, and also formulates some general methodological insights about teaching Hungarian literature to language learners. Horváth concludes that teaching literature cross-culturally widens the cultural horizons of students as well as of their teachers, offering them a space for increased cultural awareness and self-reflection.

Sign in / Sign up

Export Citation Format

Share Document