Research tests the seroconversion of dogs immunized with the Leishmune and Leish Tec vaccines in tests of the Ministry of Health

Fri, 06/02/2017 - 14:55
Researchers at the National Institute of Infectology Evandro Chagas and the Oswaldo Cruz Institute of the Oswaldo Cruz Foundation in Rio de Janeiro demonstrated that in a non-endemic area, dogs vaccinated against canine visceral leishmaniasis (LVC) with vaccines developed in Brazil were not capable of seroconverting in the protocol of tests used by the Ministry of Health. … Read More →...

Schubach, E., Figueiredo, F., & Romero, G. (2014) Accuracy and reproducibility of a rapid chromatographic immunoassay for the diagnosis of canine visceral leishmaniasis in Brazil. Transactions of The Royal Society of Tropical Medicine and Hygiene, 108(9), 568-574. DOI: 10.1093/trstmh/tru109  Accuracy and reproducibility of a rapid chromatographic immunoassay for the diagnosis of canine visceral leishmaniasis in Brazil

Campos, M., Luca, P., Renzetti, A., Souza, S., Mendes Júnior, A., Barros, R., & Figueiredo, F. (2017) Can vaccines against canine visceral leishmaniasis interfere with the serological diagnostics recommended by the Brazilian Ministry of Health?. Ciência Rural, 47(4). DOI: 10.1590/0103-8478cr20160846  Can vaccines against canine visceral leishmaniasis interfere with the serological diagnostics recommended by the Brazilian Ministry of Health?


The myopia of bibliometric indicators

Thu, 06/01/2017 - 10:47
The use of bibliometric indicators in science evaluation is a ubiquitous practice, despite the fact that there is no unequivocal relationship between citations and scientific quality, impact or merit. A recent study showed that the indiscriminate use of these indicators may hinder the publication of innovative research results, delaying the development of science. … Read More →...

Stephan, P., Veugelers, R., & Wang, J. (2017) Reviewers are blinkered by bibliometrics. Nature, 544(7651), 411-412. DOI: 10.1038/544411a  Reviewers are blinkered by bibliometrics

Hicks, D., Wouters, P., Waltman, L., de Rijcke, S., & Rafols, I. (2015) Bibliometrics: The Leiden Manifesto for research metrics. Nature, 520(7548), 429-431. DOI: 10.1038/520429a  Bibliometrics: The Leiden Manifesto for research metrics

Ioannidis, J., Boyack, K., Small, H., Sorensen, A., & Klavans, R. (2014) Bibliometrics: Is your most cited work your best?. Nature, 514(7524), 561-562. DOI: 10.1038/514561a  Bibliometrics: Is your most cited work your best?


Study suggests computational model to predict air pollution after a rocket launching

Mon, 05/29/2017 - 10:34
The study suggests a new approach to predict major atmospheric pollutants emissions after a Satellite Launch Vehicle (SLV) launching, using a weather/air quality computational model. Propellant combustion may release a huge amount of hydrogen chloride (HCl), carbon monoxide (CO), carbon dioxide (CO2) and particulate matter, posing risk to the environment. … Read More →...

Iriart, P., Fisch, G., , ., & , . (2016) Uso do Modelo WRF-CHEM para a Simulação da Dispersão de Gases no Centro de Lançamento de Alcântara. Revista Brasileira de Meteorologia, 31(4 suppl 1), 610-625. DOI: 10.1590/0102-7786312314b20150105  Uso do Modelo WRF-CHEM para a Simulação da Dispersão de Gases no Centro de Lançamento de Alcântara.

Moreira, D., Trindade, L., Fisch, G., Moraes, M., Dorado, R., & Guedes, R. (2011) A multilayer model to simulate rocket exhaust clouds. Journal of Aerospace Technology and Management, 3(1), 41-52. DOI: 10.5028/jatm.2011.03010311  A multilayer model to simulate rocket exhaust clouds

Nascimento, E., Moreira, D., Fisch, G., & Albuquerque, T. (2014) Simulation of Rocket Exhaust Clouds at the Centro de Lançamento de Alcântara Using the WRF-CMAQ Modeling System. Journal of Aerospace Technology and Management, 6(2), 119-128. DOI: 10.5028/jatm.v6i2.277  Simulation of Rocket Exhaust Clouds at the Centro de Lançamento de Alcântara Using the WRF-CMAQ Modeling System

Schuch, D., & Fisch, G. (2017) The Use of an Atmospheric Model to Simulate the Rocket Exhaust Effluents Transport and Dispersion for the Centro de Lançamento de Alcântara. Journal of Aerospace Technology and Management, 9(2), 137-146. DOI: 10.5028/jatm.v9i2.740  The Use of an Atmospheric Model to Simulate the Rocket Exhaust Effluents Transport and Dispersion for the Centro de Lançamento de Alcântara


How to find articles in open access – tips from my favorite nerd

Fri, 05/26/2017 - 12:14
Scholarly communication available online, whether in journals or repositories, adds up to millions, and this figure grows every year. What browser efficient tools are available to researchers, librarians, students, and the like to find the open-access versions of the articles that interest them? … Read More →...

Jamali, H. (2017) Copyright compliance and infringement in ResearchGate full-text journal articles. Scientometrics. DOI: 10.1007/s11192-017-2291-4  Copyright compliance and infringement in ResearchGate full-text journal articles


Meteorological Tsunamis: should we worry about them?

Mon, 05/22/2017 - 08:37
Have you ever heard about meteorological tsunamis? Why it should be important to better understand these natural phenomena? Dr. Iael Perez and Dr. Dragani Walter from the Servicio de Hidrografia - CONICET, Argentina, explain these phenomena in detail after investing on an interesting study conducted in Mar del Plata. … Read More →...

Dragani, W., Mazio, C., & Nuñez, M. (2002) Sea level oscillations in coastal waters of the Buenos Aires province, Argentina. Continental Shelf Research, 22(5), 779-790. DOI: 10.1016/S0278-4343(01)00096-6  Sea level oscillations in coastal waters of the Buenos Aires province, Argentina

Inman, D., Munk, W., & Balay, M. (1961) Spectra of low frequency ocean waves along the Argentine shelf. Deep Sea Research (1953), 8(3-4), 155-164. DOI: 10.1016/0146-6313(61)90018-1  Spectra of low frequency ocean waves along the Argentine shelf

Monserrat, S., Vilibić, I., & Rabinovich, A. (2006) Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band. Natural Hazards and Earth System Science, 6(6), 1035-1051. DOI: 10.5194/nhess-6-1035-2006  Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band

Perez, I., Walter, D., & , . (2017) Spectral variability in high frequency in sea level and atmospheric pressure on Buenos Aires Coast, Argentina. Brazilian Journal of Oceanography, 65(1), 69-78. DOI: 10.1590/s1679-87592017130506501  Spectral variability in high frequency in sea level and atmospheric pressure on Buenos Aires Coast, Argentina


Paper About Plagiarism Contains Plagiarism

Wed, 05/17/2017 - 15:08
Regular readers will know that I have an interest in plagiarism. Today I discovered an amusing case of plagiarism in a paper about plagiarism. The paper is called The confounding factors leading to plagiarism in academic writing and some suggested remedies. It recently appeared in the Journal of the Pakistan Medical Association (JPMA) and it's written by two Saudi Arabia-based authors, Salman Yousuf Guraya and Shaista Salman Guraya. Here's an example of the plagiarism: a 2015 paper by...

Guraya SY, & Guraya SS. (2017) The confounding factors leading to plagiarism in academic writing and some suggested remedies: A systematic review. JPMA. The Journal of the Pakistan Medical Association, 67(5), 767-772. PMID: 28507368   The confounding factors leading to plagiarism in academic writing and some suggested remedies: A systematic review.


Carbon nanotubes, what are they good for?

Wed, 05/17/2017 - 04:20
Kylius Wilkins talks to Urs Frey and his paper that described his recent success manufacturing carbon nanotubes (CNTs)....

Seichepine, F., Rothe, J., Dudina, A., Hierlemann, A., & Frey, U. (2017) Dielectrophoresis-Assisted Integration of 1024 Carbon Nanotube Sensors into a CMOS Microsystem. Advanced Materials, 29(17), 1606852. DOI: 10.1002/adma.201606852  Dielectrophoresis-Assisted Integration of 1024 Carbon Nanotube Sensors into a CMOS Microsystem


Fatal Attraction: Praying Mantises (A Guest Post)

Tue, 05/16/2017 - 10:15
By Britta Bibbo We all know the character: an incredibly beautiful woman that seduces the rough-and-tumble action hero, only for him to later find himself chained up over a lava pit with sharks in it! …Or something like that. A “femme fatal” is the idea of a beautiful woman who leads men to their demise. None are more perfect for this role than the female praying mantis. Praying mantis females practice the art of deception through sexual cannibalism. It’s exactly how it sounds: the male is attracted to the female and tries to make some babies, but instead ends up being devoured. Sexual cannibalism hardly seems like a good strategy for keeping the mantis population up, but some argue it’s merely females taking advantage of every scrap of food they can find… even if it’s a loving male. False garden mantis (Pseudomantis albofimbriata). Image by Donald Hobern from Wikimedia Commons.When male mantises encounter a female in the wild they only have one thing on the brain, while a female may be more interested in self-preservation. If she hasn’t encountered food for a few days she will be VERY hungry and not all that interested in mating; in many species of mantises it is known that female mantises will eat males, even while having sex! So how do female mantises attract males? For most insects, females are able to attract males with pheromones, chemicals released from an individual that affect other individuals of the same species. For instance, females can emit pheromones that will be telling of their age, reproductive status, and body condition. Males are able to detect pheromones from great distances and these pheromones play a role in allowing a male to determine how attractive a female could be. Before any sexy time can begin, females have to show that they are open to male advances. Showing a male you’ve never met before that you’re interested can be a difficult task- so females typically emit pheromones that are known as honest signals. These signals accurately convey female interest in mating, as well as her reproductive status, age, and body condition. Because the majority of females are being honest, males don’t have to think twice about their mate’s intentions. This is where female deception comes into play. If a female takes advantage of the lack of male wariness, she could end up with an easy meal. This deception by the females is what scientists know as the Femme Fatale hypothesis. This hypothesis explains that female mantises are naturally selected to deceive male mantises, and exploit them as food. This idea hasn’t had much backing evidence until Dr. Kate Barry of Macquarie University in Sydney, Australia sought to test this hypothesis with the false garden mantis (Pseudomantis albofimbriata). After considering the test subjects and how the mantises communicate, Kate expected one of three possible outcomes: 1. There will be no pattern between female hunger and male attraction (if female false garden mantises are not femme fatales and false garden mantis pheromones do not communicate feeding-related information). 2. The well-fed females will attract the most males, while hungry females will attract the fewest males (if female false garden mantises are not femme fatales and females are always honest about their quality and willingness to mate). 3. The hungriest females will attract the most males, while well-fed females will still attract some males (if female false garden mantises are femme fatales and females are dishonest about their quality and willingness to mate when they are hungry). To test her expectations, Kate gathered juvenile mantises that were close to their adult forms to have many male and female mantises that have no previous mating experience. Once the mantises were adults, females were given different feeding regimens to have a range of hunger. Categories included Good (well-fed), Medium (slightly less fed), Poor (hungry), and Very Poor (very, very hungry). Adult mantises were housed in a circular cage that separated each female individually around the edge, while the males were kept in the center. Diagram of cage experiment was conducted in. Image by Britta Bibbo.To allow the males to smell the female pheromones, researchers separated males by special walls that the males could not see through, but could still detect the pheromones given off by a female. The number of males on a female’s side of the cage was used to measure how attractive her pheromones were to the males. The results of this study concluded that pheromones produced by the females that were very hungry were the most attractive to males. Through deception, the hungriest females are seen as sexier than well-fed, healthy females that are willing to mate! This result is surprising; normally females that are well-fed are seen as “sexier” because they have more nutrients available to them, making them more fertile. Hungry females have fewer nutrients available to them, making them less fertile, and therefore not as “sexy”. These hungry female mantises are advertising themselves as well-fed, fertile, and ready to rock when really, they’re not. Simply put, these results show that males are being catfished, and then consumed. Whether hungry females are actively trying to deceive males or if it’s just coincidental still needs to be looked into, but for now, be thankful for a partner who will see you as more than just a piece of meat! Literature Cited:Barry, K. (2014). Sexual deception in a cannibalistic mating system? Testing the Femme Fatale hypothesis Proceedings of the Royal Society B: Biological Sciences, 282 (1800), 20141428-20141428 DOI: 10.1098/rspb.2014.1428...

Barry, K. (2014) Sexual deception in a cannibalistic mating system? Testing the Femme Fatale hypothesis. Proceedings of the Royal Society B: Biological Sciences, 282(1800), 20141428-20141428. DOI: 10.1098/rspb.2014.1428  Sexual deception in a cannibalistic mating system? Testing the Femme Fatale hypothesis


Gender disparities in science persist despite significant advances

Wed, 05/10/2017 - 16:29
The participation of women as authors in academic publications has been increasing significantly worldwide and in all areas of knowledge, reaching 49% in Brazil and Portugal, followed by Australia (44%) and the European Union (41%). Gender equity in science, however, still has a long way to go, especially in the editing and peer review functions. A study of more than 41,000 articles published between 2007 and 2015 shows that male editors - who are majority - preferentially select same gender referees. … Read More →...

Markus Helmer, Manuel Schottdorf, Andreas Neef, & Demian Battaglia. (2017) Gender bias in scholarly peer review. eLife. DOI: 10.7554/eLife.21718.001  Gender bias in scholarly peer review

Ross, E. (2017) Gender bias distorts peer review across fields. Nature. DOI: 10.1038/nature.2017.21685  Gender bias distorts peer review across fields

Lerback, J., & Hanson, B. (2017) Journals invite too few women to referee. Nature, 541(7638), 455-457. DOI: 10.1038/541455a  Journals invite too few women to referee


Health systems in Brazil and regionalization policies

Mon, 05/08/2017 - 13:25
There is currently a crucial moment in the implementation of the Unified Health System (SUS), since its performance is questioned on all sides, in general, magnifying a superficial view of its failures and denying many of its successes. … Read More →...

Carvalho, G. (2013) A saúde pública no Brasil. Estudos Avançados, 27(78), 7-26. DOI: 10.1590/S0103-40142013000200002  A saúde pública no Brasil

Moreira, M., Ribeiro, J., Ouverney, A., & , . (2017) Obstáculos políticos à regionalização do SUS: percepções dos secretários municipais de Saúde com assento nas Comissões Intergestores Bipartites. Ciência , 22(4), 1097-1108. DOI: 10.1590/1413-81232017224.03742017  Obstáculos políticos à regionalização do SUS: percepções dos secretários municipais de Saúde com assento nas Comissões Intergestores Bipartites

Reis, A., Sóter, A., Furtado, L., Pereira, S., , ., , ., , ., & , . (2017) Reflexões para a construção de uma regionalização viva. Ciência , 22(4), 1045-1054. DOI: 10.1590/1413-81232017224.26552016  Reflexões para a construção de uma regionalização viva

Ribeiro, J., Moreira, M., Ouverney, A., Silva, C., & , . (2017) Políticas de saúde e lacunas federativas no Brasil: uma análise da capacidade regional de provisão de serviços. Ciência , 22(4), 1031-1044. DOI: 10.1590/1413-81232017224.03732017  Políticas de saúde e lacunas federativas no Brasil: uma análise da capacidade regional de provisão de serviços


Finding real rewards in a virtual world

Mon, 05/08/2017 - 00:56
A new study shows that mice who learn to find goals in virtual reality use their hippocampus the same was as in the real world....

Sato, M., Kawano, M., Mizuta, K., Islam, T., Lee, M., & Hayashi, Y. (2017) Hippocampus-Dependent Goal Localization by Head-Fixed Mice in Virtual Reality. eneuro, 4(3). DOI: 10.1523/ENEURO.0369-16.2017  Hippocampus-Dependent Goal Localization by Head-Fixed Mice in Virtual Reality


Openness is the only quality of an academic article that can be objectively measured

Tue, 05/02/2017 - 10:20
Quality of scientific research articles is a widespread preoccupation in academic circles. The most used proxy is based on citation counts, not of the article itself, but of the averages of articles appearing in the same journal during a given time window. This is known as the Journal Impact Factor, which may be objective within its own definition, but utterly lacks objectivity with regard to scientific quality of individual articles. Only some technical qualities of articles can be assessed at the time of their publication, and, significantly, their openness, the degree to which the research results they describe can be immediately and universally shared. … Read More →...

Fanelli, D. (2009) How Many Scientists Fabricate and Falsify Research? A Systematic Review and Meta-Analysis of Survey Data. PLoS ONE, 4(5). DOI: 10.1371/journal.pone.0005738  How Many Scientists Fabricate and Falsify Research? A Systematic Review and Meta-Analysis of Survey Data

Editorial. (2005) Not-so-deep impact. Nature, 435(7045), 1003-1004. DOI: 10.1038/4351003b  Not-so-deep impact

Velho, L. (1986) The “meaning” of citation in the context of a scientifically peripheral country. Scientometrics, 9(1-2), 71-89. DOI: 10.1007/BF02016609  The “meaning” of citation in the context of a scientifically peripheral country

Jalalian M. (2015) The story of fake impact factor companies and how we detected them. Electronic physician, 7(2), 1069-72. PMID: 26120416   The story of fake impact factor companies and how we detected them.