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  1. Article ; Online: Alberto Santos-Dumont

    Henrique Lins de Barros

    Exacta, Vol 4, Iss 1, Pp 35-

    pioneiro da aviação

    2006  Volume 46

    Abstract: The lifework of Santos-Dumont is an important mark in 20th Century, once it has accelerated the aeronautics development. In less than ten years, the Brazilian flyer has got to solve two problems which afflicted the inventors: the balloons maneuverability, ...

    Abstract The lifework of Santos-Dumont is an important mark in 20th Century, once it has accelerated the aeronautics development. In less than ten years, the Brazilian flyer has got to solve two problems which afflicted the inventors: the balloons maneuverability, a challenge since the 18th Century, and the flight of the airplane, which had concentrated the efforts of important scientists and engineers. Santos-Dumonts biography shows the trajectory of a useful and creative inventor who, giving his contributions to aeronautical progress, applied himself, worked perseveringly, to the popularization of the human flight. At the end of his life, depressed, committed suicide. His conquests transformed him into a national hero; despite very honored is relatively little known. In the centenary of the historys first homologated flight, the 14-bis flight, its opportune to bend over his history and to understand the ways of invention.
    Keywords Science (General) ; Q1-390 ; Science ; Q
    Subject code 900
    Language Portuguese
    Publishing date 2006-01-01T00:00:00Z
    Publisher Universidade Nove de Julho
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Book ; Online: Renewable Energy Consumption and Economic Growth

    Fuinhas, José Alberto / Koengkan, Matheus / de Barros Santiago, Renato Filipe / de Barros Santiago, Renato Filipe

    2023  

    Keywords Business strategy ; wood pellets ; diffusion of innovation ; forest products business ; energy policy ; qualitative interviews ; industry leaders ; wood economy ; residential heating technology ; battery electric vehicles ; greenhouse gas emissions ; energy consumption ; method of moments quantile regression ; European Union ; economic complexity ; export quality ; ecological footprint ; club convergence ; panel quantile regression ; environmental quality ; corruption ; income level ; renewable energy ; Africa ; financial deepening ; financial development ; sustainable energy supply ; domestic investment ; autoregressive distributed lag model (ARDL) ; institutional quality ; natural resources ; economic growth ; China ; CCO2 emissions ; disintegrated trade ; MINT nations ; foreign direct investment ; bilateral trade ; panel ARDL model ; carbon dioxide emissions ; energy efficiency ; industrial structure ; energy consumption structure ; fsQCA ; Chinese economic growth ; competitiveness index ; cultural industry ; panel regression models ; eco-efficiency ; philanthropy ; DEA ; Stochastic Frontier ; carbon emissions ; education ; environmental pollution ; CO2 emissions ; human capital ; investment ; sustainability ; econometrics ; empirical ; energy economics ; energy poverty ; energy regulation ; Lisbon ; policies ; Portugal ; n/a
    Language English
    Size 1 electronic resource (298 pages)
    Publisher MDPI - Multidisciplinary Digital Publishing Institute
    Publishing place Basel
    Document type Book ; Online
    Note English
    HBZ-ID HT030376730
    ISBN 9783036571966 ; 3036571965
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  3. Article ; Online: The Klinefelter Syndrome and Testicular Sperm Retrieval Outcomes.

    Sá, Rosália / Ferraz, Luís / Barros, Alberto / Sousa, Mário

    Genes

    2023  Volume 14, Issue 3

    Abstract: Klinefelter syndrome (KS), caused by the presence of an extra X chromosome, is the most prevalent chromosomal sexual anomaly, with an estimated incidence of 1:500/1000 per male live birth (karyotype 47,XXY). High stature, tiny testicles, small penis, ... ...

    Abstract Klinefelter syndrome (KS), caused by the presence of an extra X chromosome, is the most prevalent chromosomal sexual anomaly, with an estimated incidence of 1:500/1000 per male live birth (karyotype 47,XXY). High stature, tiny testicles, small penis, gynecomastia, feminine body proportions and hair, visceral obesity, and testicular failure are all symptoms of KS. Endocrine (osteoporosis, obesity, diabetes), musculoskeletal, cardiovascular, autoimmune disorders, cancer, neurocognitive disabilities, and infertility are also outcomes of KS. Causal theories are discussed in addition to hormonal characteristics and testicular histology. The retrieval of spermatozoa from the testicles for subsequent use in assisted reproduction treatments is discussed in the final sections. Despite testicular atrophy, reproductive treatments allow excellent results, with rates of 40-60% of spermatozoa recovery, 60% of clinical pregnancy, and 50% of newborns. This is followed by a review on the predictive factors for successful sperm retrieval. The risks of passing on the genetic defect to children are also discussed. Although the risk is low (0.63%) when compared to the general population (0.5-1%), patients should be informed about embryo selection through pre-implantation genetic testing (avoids clinical termination of pregnancy). Finally, readers are directed to a number of reviews where they can enhance their understanding of comprehensive diagnosis, clinical care, and fertility preservation.
    MeSH term(s) Infant, Newborn ; Pregnancy ; Child ; Female ; Humans ; Male ; Klinefelter Syndrome/epidemiology ; Klinefelter Syndrome/genetics ; Klinefelter Syndrome/pathology ; Sperm Retrieval ; Semen ; Testis/pathology ; Spermatozoa/pathology ; Chromosome Aberrations
    Language English
    Publishing date 2023-03-04
    Publishing country Switzerland
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes14030647
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: 4. English Republicanism and the Concept of Interest

    Alberto Ribeiro Gonçalves de Barros

    Journal of Interdisciplinary History of Ideas, Vol 10, Iss

    2022  Volume 20

    Abstract: This paper examines the concept of interest as employed by authors who defended the Commonwealth established in England from 1649 to 1660. Based on Marchamont Nedham’s and James Harrington’s political writings, it seeks to understand their constitutional ...

    Abstract This paper examines the concept of interest as employed by authors who defended the Commonwealth established in England from 1649 to 1660. Based on Marchamont Nedham’s and James Harrington’s political writings, it seeks to understand their constitutional proposals for the problem of the relation between private and public interests. If Nedham conceived politics as the process of continual conflicts between competing interests where only one of them can emerge triumphant, Harrington proposed constitutional devices capable of accommodating the diversity of private interests and extracting from them a public interest. They argued that the most appropriate political regime to effect the people’s interest was a popular government, which allowed the separation of legislative and executive functions, and associated it to a classical idea of mixed constitution. Nevertheless, their proposals depart from this classical ideal, characterized by incorporation and interaction of the various parts of the body politic, and project the constitutional government of modern republics. Keywords: Marchamont Nedham, James Harrington, Interest, Popular Government, Mixed Constitution
    Keywords History (General) and history of Europe ; D
    Subject code 941
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Università degli Studi di Torino
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Book: Alguns aspectos económicos da agricultura em Portugal pelo Eduardo Alberto Lima Basto

    Barros, Henrique de / Lima Basto, Eduardo Alberto

    (Inquérito económico-agrícola promovido pelo Senado universitário e dirigido pelo ... Eduardo Alberto Lima Basto ; / Henrique de Barros ; 4)

    1936  

    Institution Universidade técnica de Lisboa
    Series title Inquérito económico-agrícola promovido pelo Senado universitário e dirigido pelo ... Eduardo Alberto Lima Basto
    / Henrique de Barros ; 4
    Size XVI, 482 S, Tab
    Publisher Instituto superior de ciéncias economicas e financeiras
    Publishing place Lisboa
    Document type Book
    Database Former special subject collection: coastal and deep sea fishing

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  6. Book: Alguns aspectos económicos da agricultura em Portugal pelo Eduardo Alberto Lima Basto

    Barros, Henrique de / Lima Basto, Eduardo Alberto

    (Inquérito económico-agrícola promovido pelo Senado universitário e dirigido pelo ... Eduardo Alberto Lima Basto ; / Henrique de Barros ; 4)

    1936  

    Institution Universidade técnica de Lisboa
    Series title Inquérito económico-agrícola promovido pelo Senado universitário e dirigido pelo ... Eduardo Alberto Lima Basto
    / Henrique de Barros ; 4
    Language Undetermined
    Size XVI, 482 S, Tab
    Publisher Instituto superior de ciéncias economicas e financeiras
    Publishing place Lisboa
    Document type Book
    Database ECONomics Information System

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  7. Article ; Online: Renewable Energy Consumption and Economic Growth—Special Issue

    José Alberto Fuinhas / Matheus Koengkan / Renato Filipe de Barros Santiago

    Sustainability, Vol 15, Iss 5260, p

    2023  Volume 5260

    Abstract: The world is currently facing a critical environmental crisis, and the shift toward renewable energy sources has become increasingly urgent [.] ...

    Abstract The world is currently facing a critical environmental crisis, and the shift toward renewable energy sources has become increasingly urgent [.]
    Keywords n/a ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Clinical outcomes of 77 TESE treatment cycles in non-mosaic Klinefelter syndrome patients.

    Barros, Pedro / Cunha, Mariana / Barros, Alberto / Sousa, Mário / Dória, Sofia

    JBRA assisted reproduction

    2022  Volume 26, Issue 3, Page(s) 412–421

    Abstract: Objective: The current study aimed to present the clinical outcomes of 76 azoospermic patients with non-mosaic Klinefelter syndrome (KS), treated with testicular spermatozoa extraction (TESE) followed by intracytoplasmic sperm injection (ICSI) using ... ...

    Abstract Objective: The current study aimed to present the clinical outcomes of 76 azoospermic patients with non-mosaic Klinefelter syndrome (KS), treated with testicular spermatozoa extraction (TESE) followed by intracytoplasmic sperm injection (ICSI) using either fresh or cryopreserved testicular spermatozoa.
    Methods: We retrospectively evaluated 76 patients with non-mosaic KS belonging to a special group of cases that besides infertility did not present the classical signs and symptoms of testosterone deficiency. One of the patients repeated the TESE procedure (76 patients, 77 TESE cycles). Sixty of these 76 patients accepted to undergo TESE associated with ovarian stimulation, while 16 patients underwent TESE followed by testicular spermatozoa cryopreservation. Aneuploidy screening of the offspring was performed by Multiplex ligation-dependent probe amplification and by amniotic fluid karyotyping. Statistical analysis used the Chi-Squared Test, Fisher's Exact Test, 2-sided, for rates, and the Independent Samples T-test for equality of means, 2-sided.
    Results: Testicular spermatozoa were recovered in 31 (40.3%) of the attempts. The patients underwent 47 ICSI cycles, 25 with fresh testicular spermatozoa and 22 with cryopreserved testicular spermatozoa. Fertilization (63.5% vs. 41.6%, p=0.000), implantation (37% vs. 13.2%, p=0.014), clinical pregnancy (60.9% vs. 19%, p=0.005) and live birth (65.2% vs. 23.8%, p=0.006) rates were higher with fresh testicular spermatozoa. Chromosome analysis of the 21 newborns was normal.
    Conclusions: The present data adds further information regarding the recovery rate of spermatozoa after TESE and the embryological and clinical outcomes with fresh and cryopreserved testicular spermatozoa, besides reassuring the safety concerning chromosomal transmission of KS from parents to their offspring.
    MeSH term(s) Female ; Humans ; Infant, Newborn ; Klinefelter Syndrome/genetics ; Klinefelter Syndrome/therapy ; Male ; Pregnancy ; Retrospective Studies ; Semen ; Sperm Retrieval ; Spermatozoa/physiology
    Language English
    Publishing date 2022-08-04
    Publishing country Brazil
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2856226-4
    ISSN 1518-0557 ; 1517-5693
    ISSN (online) 1518-0557
    ISSN 1517-5693
    DOI 10.5935/1518-0557.20210081
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A refined culture system of oocytes from early antral follicles promotes oocyte maturation and embryo development in cattle.

    Garcia Barros, Rodrigo / Lodde, Valentina / Franciosi, Federica / Luciano, Alberto Maria

    Reproduction (Cambridge, England)

    2023  Volume 165, Issue 2, Page(s) 221–233

    Abstract: In brief: The proposed culture system improves the current state of in vitro culture of growing oocytes in the bovine species and allows access to the untapped gamete reserve, thus improving reproductive efficiency.: Abstract: The present study aimed ...

    Abstract In brief: The proposed culture system improves the current state of in vitro culture of growing oocytes in the bovine species and allows access to the untapped gamete reserve, thus improving reproductive efficiency.
    Abstract: The present study aimed to improve the in vitro culture of bovine oocytes collected from early antral follicles (EAFs) to support the progressive acquisition of meiotic and developmental competence. The rationale that drove the development of such a culture system was to maintain as much as possible the physiological conditions that support the oocyte growth and differentiation in vivo. To this extent, oocytes were cultured for 5 days, which parallels the transition from early to medium antral follicles (MAFs) in the bovine, and supports promoting a 3D-like structure were provided. Additionally, the main hormones (follicle-stimulating hormone, estradiol, progesterone, and testosterone) were added in concentrations similar to the ones previously observed in bovine EAFs. The meiotic arrest was imposed using cilostamide. The cultured cumulus-oocyte complexes (COCs) reached a mean diameter of 113.4 ± 0.75 µm and showed a progressive condensation of the chromatin enclosed in the germinal vesicle (GV), together with a gradual decrease in the global transcriptional activity, measured by 5-ethynyl uridine incorporation. The described morpho-functional changes were accompanied by an increased ability to mature and develop to the blastocyst stage in vitro, although not matching the rates obtained by MAF-retrieved oocytes. The described system improves the current state of in vitro culture of growing oocytes in the bovine species, and it can be used to increase the number of gametes usable for in vitro embryo production in animals of high genetic merit or with specific desirable traits.
    MeSH term(s) Female ; Cattle ; Animals ; In Vitro Oocyte Maturation Techniques/veterinary ; Oocytes/metabolism ; Ovarian Follicle/physiology ; Oogenesis ; Embryonic Development ; Meiosis
    Language English
    Publishing date 2023-01-06
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2034501-X
    ISSN 1741-7899 ; 1470-1626 ; 1476-3990
    ISSN (online) 1741-7899
    ISSN 1470-1626 ; 1476-3990
    DOI 10.1530/REP-22-0277
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Radioactive hot-spot localisation and identification using deep learning.

    Mendes, Filipe / Barros, Miguel / Vale, Alberto / Gonçalves, Bruno

    Journal of radiological protection : official journal of the Society for Radiological Protection

    2022  Volume 42, Issue 1

    Abstract: The detection of radioactive hot-spots and the identification of the radionuclides present have been a challenge for the security sector, especially in situations involving chemical, biological, radiological, nuclear and explosive threats, as well as ... ...

    Abstract The detection of radioactive hot-spots and the identification of the radionuclides present have been a challenge for the security sector, especially in situations involving chemical, biological, radiological, nuclear and explosive threats, as well as naturally occurring radioactive materials. This work proposes a solution based on Machine Learning techniques, with a focus on artificial neural networks (NNs), in order to localise, quantify and identify radioactive sources. Firstly, the created RHLnet model uses observations of radiological intensity counts and corresponding localisations to estimate the number, location and activity of unknown radioactive sources present in a given scenario. Then, another model (RHIdnet) gets the gamma spectrum of the sources to perform the identification of the corresponding radionuclides. For this, a training data set composed of simulated data is used during the training process, and so, using algorithms with the models already trained, fast and accurate predictions are achieved, ensuring the reliability of such a NN-based approach. The proposed solution is tested in simulated and real scenarios, with multiple sources, providing a low number of limitations, related to possible false negatives and false positives. Besides, the results have shown that the algorithm is scalable for very large regions, as well as for very small scenarios. Single and multiple isotope identification on each sample is explored, highlighting the benefits as well as possible improvements. Thus, NNs have demonstrated the capability of being an emerging tool with the potential to make a difference in the nuclear field, by helping in the development of novel techniques and new solutions in order to safeguard human lives.
    MeSH term(s) Algorithms ; Deep Learning ; Humans ; Machine Learning ; Neural Networks, Computer ; Reproducibility of Results
    Language English
    Publishing date 2022-01-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 639411-5
    ISSN 1361-6498 ; 0952-4746
    ISSN (online) 1361-6498
    ISSN 0952-4746
    DOI 10.1088/1361-6498/ac1a5c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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