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  1. Book ; Online: Epidemiology and Control of Notifiable Animal Diseases

    Álvarez, Julio / Álvarez, Julio / Bakker, Douwe / Bezos, Javier

    2019  

    Keywords Medicine ; Veterinary medicine ; Epidemiology ; Control ; Notifiable disease ; Detection ; Modeling ; Risk assessment ; Tuberculosis ; Swine fever ; Rinderpest
    Size 1 electronic resource (133 pages)
    Publisher Frontiers Media SA
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021230049
    ISBN 9782889458233 ; 2889458237
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Book ; Online: Applications of STEM (Science, Technology, Engineering and Mathematics) Tools in Microbiology of Infectious Diseases

    Perez, Andres / Alvarez, Julio

    2017  

    Abstract: Epidemiology is a discipline intended to systematically investigate, and ideally quantify, disease dynamics in populations (Perez, 2015). Epidemiological assessmentsmay be divided into four large areas, namely, (a) identification and characterization of ... ...

    Abstract Epidemiology is a discipline intended to systematically investigate, and ideally quantify, disease dynamics in populations (Perez, 2015). Epidemiological assessmentsmay be divided into four large areas, namely, (a) identification and characterization of a pathogen, (b) development of systems for detection of cases, (c) descriptive epidemiology and quantification of disease patterns, and (d) advanced analytical methods to design intervention strategies. Briefly, there is an initial need for understanding the pathogeny of a disease and condition, which may also include experimental studies and development of new models of infection and proliferation under different conditions. Subsequently, such knowledgemay be applied to support the identification of cases, which typically includes the design, evaluation, and validation of diagnostic tests.-

    Diseasemay then be quantified in a population, leading to the identification of patterns and application of molecular characterization techniques to understand disease spread, and ultimately to identify factors preventing or promoting disease. Finally, those factors may be incorporated into advanced quantitative methods and epidemiological models, which are used to design and evaluate strategies aimed at preventing, controlling, or eliminating disease in the population.Recent years have seen a dramatic increase in the application of science, technology, engineering, and mathematical (STEM) tools and approaches intended to enhance such analytical epidemiology process, with the ultimate goal of supporting disease prevention, control, and eradication.-

    This eBook comprises a series of research articles that, through current state-of-the-art scientific knowledge on the application of STEM tools to the microbiology of infectious diseases, demonstrate their usefulness at the various components of an integral epidemiological approach, divided into the four large components of (a) experimental studies, (b) novel diagnostic techniques, (c) epidemiological characterization, and (d) population modeling and intervention
    Keywords Microbiology ; Science (General)
    Size 1 electronic resource (223 p.)
    Publisher Frontiers Media SA
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT020095401
    ISBN 9782889451838 ; 2889451836
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  3. Article ; Online: Body Perception From Connected Speech: Speaker Height Discrimination from Natural Sentences and Sine-Wave Replicas with and without Pitch.

    González-Alvarez, Julio / Sos-Peña, Rosa

    Perceptual and motor skills

    2023  Volume 130, Issue 4, Page(s) 1353–1365

    Abstract: In addition to language, the human voice carries information about the physical characteristics of speakers, including their body size (height and weight). The fundamental speaking frequency, perceived as voice pitch, and the formant frequencies, or ... ...

    Abstract In addition to language, the human voice carries information about the physical characteristics of speakers, including their body size (height and weight). The fundamental speaking frequency, perceived as voice pitch, and the formant frequencies, or resonators of the vocal tract, are the acoustic speech parameters that have been most intensely studied for perceiving a speaker's body size. In this study, we created sine-wave (SW) replicas of connected speech (sentences) uttered by 20 male and 20 female speakers, consisting of three time-varying sinusoidal waves matching the frequency pattern of the first three formants of each sentence. These stimuli only provide information about the formant frequencies of a speech signal. We also created a new experimental condition by adding a sinusoidal replica of the voice pitch of each sentence. Results obtained from a binary discrimination task revealed that (a) our SW replicas provided sufficient useful information to accurately judge the speakers' body height at an above chance level; (b) adding the sinusoidal replica about the voice pitch did not significantly increase accuracy; and (c) stimuli from female speakers were more informative for body height detection and allowed higher perceptual accuracy, due to a stronger correlation between formant frequencies and actual body height than stimuli from male speakers.
    MeSH term(s) Humans ; Male ; Female ; Speech ; Speech Perception ; Voice ; Body Height ; Language ; Pitch Perception
    Language English
    Publishing date 2023-07-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 204507-2
    ISSN 1558-688X ; 0031-5125
    ISSN (online) 1558-688X
    ISSN 0031-5125
    DOI 10.1177/00315125231173581
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The role of facial skin tone and texture in the perception of age.

    González-Alvarez, Julio / Sos-Peña, Rosa

    Vision research

    2023  Volume 213, Page(s) 108319

    Abstract: Age and gender perception from looking at people's faces, without any cultural or conventional cues, is primarily based on two independent components: a) the shape or facial structure, and b) surface reflectance (skin tone and texture, STT). This study ... ...

    Abstract Age and gender perception from looking at people's faces, without any cultural or conventional cues, is primarily based on two independent components: a) the shape or facial structure, and b) surface reflectance (skin tone and texture, STT). This study examined the relative contribution of facial STT to the perception of age. A total of 204 subjects participated in four experiments presenting artificial 3D realistic faces of different age versions under two key experimental conditions: with and without STT. Two experiments involved a discrimination-age task, and other two involved a direct age-estimation task. The faces for the last experiment were generated from the photographs of real people. The results were quite consistent throughout the experiments. Data suggest that the contribution of the STT information leads to roughly 25-33 % of accuracy in age perception. Interestingly, a differential pattern emerges in relation to facial age: the relative contribution of skin information increases sharply with advancing age, to the point that age judgments of the older faces (60 years old) without STT information fall to the chance level. This pattern suggests that facial skin tone and texture are the main sources of information for estimating the age of people past their maturity as those are the principal visual signs of aging beyond the anatomical changes of facial structure.
    MeSH term(s) Humans ; Middle Aged ; Skin Pigmentation ; Aging ; Cues ; Judgment ; Perception
    Language English
    Publishing date 2023-09-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 200427-6
    ISSN 1878-5646 ; 0042-6989
    ISSN (online) 1878-5646
    ISSN 0042-6989
    DOI 10.1016/j.visres.2023.108319
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Average collision velocity of single yeast cells during electrochemically induced impacts.

    Lutkenhaus, John A / Ahmed, Junaid U / Hasan, Mehedi / Prosser, Derek C / Alvarez, Julio C

    The Analyst

    2024  

    Abstract: We recorded current-time ( ...

    Abstract We recorded current-time (
    Language English
    Publishing date 2024-04-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 210747-8
    ISSN 1364-5528 ; 0003-2654
    ISSN (online) 1364-5528
    ISSN 0003-2654
    DOI 10.1039/d4an00134f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Association Between Elevated Body Mass Index and Cardiac Organ Damage in Children and Adolescents: Evidence and Mechanisms.

    Annaloro, Alessandra / Invernizzi, Chiara / Aguilar, Francisco / Alvarez, Julio / Cuspidi, Cesare / Grassi, Guido / Lurbe, Empar

    High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension

    2024  Volume 31, Issue 2, Page(s) 167–175

    Abstract: Introduction: Although a number of pathophysiological aspects of childhood obesity have been reported, few information are available on obesity-related cardiac organ damage.: Aim: The present study was aimed at assessing the impact of anthropometric, ...

    Abstract Introduction: Although a number of pathophysiological aspects of childhood obesity have been reported, few information are available on obesity-related cardiac organ damage.
    Aim: The present study was aimed at assessing the impact of anthropometric, blood pressure (BP) and metabolic variable on cardiac structure and function in youth.
    Methods: In 78 subjects aged 5-16 years attending the outpatient clinic of cardiovascular risk (Valencia, Spain) anthropometric and metabolic variables, clinic and ambulatory BP and echocardiographic parameters were assessed. Subjects were also classified according to the presence of insulin resistance.
    Results: Subjects mean age (± SD) amounted to 12.03 ± 2.4 years and males to 53.8%. Ten subjects were normoweight, 11 overweight, 39 obese, and 18 severely obese. No significant difference in office and ambulatory BP was detected among different bodyweight groups. A significant direct correlation was observed between left ventricular mass index (LVMI) and obesity markers [body mass index (BMI): r = 0.38, waist circumference (WC): r = 0.46, P < 0.04 for both]. Left ventricular hypertrophy, relative wall thickness and left atrial diameter were significantly related to BMI and WC. In contrast, office and ambulatory BP were unrelated to other variables, and differences in LVMI among different BP phenotypes were not significant. When partitioning the population by insulin resistance, LVMI, adjusted for confounders, was significantly greater in the insulin-resistant group.
    Conclusions: In children and adolescents characterized by different body weight patterns, weight factors "per se" and the related insulin resistance state appear to represent the main determinants of LVMI and left ventricular hypertrophy, independently on BP values and BP phenotypes.
    MeSH term(s) Humans ; Male ; Child ; Adolescent ; Female ; Body Mass Index ; Pediatric Obesity/physiopathology ; Pediatric Obesity/diagnosis ; Pediatric Obesity/epidemiology ; Pediatric Obesity/complications ; Hypertrophy, Left Ventricular/physiopathology ; Hypertrophy, Left Ventricular/diagnostic imaging ; Hypertrophy, Left Ventricular/etiology ; Insulin Resistance ; Child, Preschool ; Blood Pressure ; Age Factors ; Spain/epidemiology ; Ventricular Function, Left ; Ventricular Remodeling ; Waist Circumference ; Risk Assessment ; Risk Factors ; Cross-Sectional Studies
    Language English
    Publishing date 2024-03-26
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 1236337-6
    ISSN 1179-1985 ; 1120-9879
    ISSN (online) 1179-1985
    ISSN 1120-9879
    DOI 10.1007/s40292-024-00633-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: World Science against COVID-19: Gender and Geographical Distribution of Research.

    GONZALEZ-ALVAREZ, JULIO

    medRxiv

    Abstract: In just a year and a half, an enormous volume of scientific research has been generated throughout the world to study a virus/disease that turned into a pandemic. All the articles on COVID-19 or SARS-CoV-2 included in the SCI-EXPANDED database (Web of ... ...

    Abstract In just a year and a half, an enormous volume of scientific research has been generated throughout the world to study a virus/disease that turned into a pandemic. All the articles on COVID-19 or SARS-CoV-2 included in the SCI-EXPANDED database (Web of Science), signed by more than a third of a million of authorships, were analyzed. Gender could be identified in 92% of the authorships. Women represent 40% of all authors, a similar proportion as first authors, but just 30% as last/senior authors. The pattern of collaboration shows an interesting finding: when a woman signs as a first or last/senior author, the article byline approximates gender parity. According to the corresponding address, the USA shares 22.8% of all world articles, followed by China (14.4%), Italy (7.8%), the UK (5.8%), India (4.2%), Spain (3.8%), Germany (3.6%), France (2.9%), Turkey (2.5%), and Canada (2.4%). Despite their short lives, the papers received an average of 11 citations. The high impact of papers from China is striking (25.1 citations; the UK, 12.4 citations; the USA, 11.3 citations), presumably because the disease emerged in China, and the first publications (very cited) came from there.
    Keywords covid19
    Language English
    Publishing date 2021-09-29
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2021.09.29.21264261
    Database COVID19

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  8. Article: Editorial: Advancing the development and implementation of regional, national tuberculosis control programs in livestock in Africa, Asia, and Latin America.

    Bakker, Douwe / Buza, Joram Josephat / Álvarez, Julio / Kapur, Vivek

    Frontiers in veterinary science

    2023  Volume 10, Page(s) 1192091

    Language English
    Publishing date 2023-04-18
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2834243-4
    ISSN 2297-1769
    ISSN 2297-1769
    DOI 10.3389/fvets.2023.1192091
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Perceiving Body Height From Connected Speech: Higher Fundamental Frequency Is Associated With the Speaker's Height.

    González-Alvarez, Julio / Sos-Peña, Rosa

    Perceptual and motor skills

    2022  Volume 129, Issue 5, Page(s) 1349–1361

    Abstract: To a certain degree, human listeners can perceive a speaker's body size from their voice. The speaker's voice pitch or fundamental frequency (Fo) and the vocal formant frequencies are the voice parameters that have been most intensively studied in past ... ...

    Abstract To a certain degree, human listeners can perceive a speaker's body size from their voice. The speaker's voice pitch or fundamental frequency (Fo) and the vocal formant frequencies are the voice parameters that have been most intensively studied in past body size perception research (particularly for body height). Artificially lowering the Fo of isolated vowels from male speakers improved listeners' accuracy of binary (i.e., tall vs not tall) body height perceptions. This has been explained by the theory that a denser harmonic spectrum provided by a low pitch improved the perceptual resolution of formants that aid formant-based size assessments. In the present study, we extended this research using connected speech (i.e., words and sentences) pronounced by speakers of both sexes. Unexpectedly, we found that raising Fo, not lowering it, increased the participants' perceptual performance in two binary discrimination tasks of body size. We explain our new finding in the temporal domain by the dynamic and time-varying acoustic properties of connected speech. Increased Fo might increase the sampling density of sound wave acoustic cycles and provide more detailed information, such as higher resolution, on the envelope shape.
    MeSH term(s) Body Height ; Body Size ; Female ; Humans ; Male ; Speech ; Speech Perception
    Language English
    Publishing date 2022-06-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 204507-2
    ISSN 1558-688X ; 0031-5125
    ISSN (online) 1558-688X
    ISSN 0031-5125
    DOI 10.1177/00315125221110392
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Blood pressure measurement in children and adolescents: key element in the evaluation of arterial hypertension.

    Álvarez, Julio / Aguilar, Francisco / Lurbe, Empar

    Anales de pediatria

    2022  Volume 96, Issue 6, Page(s) 536.e1–536.e7

    Abstract: Arterial hypertension is the main modifiable risk factor for cardiovascular disease, occupying the first place among the causes of loss of life years adjusted for disability. In recent years, arterial hypertension in children and adolescents has gained ... ...

    Abstract Arterial hypertension is the main modifiable risk factor for cardiovascular disease, occupying the first place among the causes of loss of life years adjusted for disability. In recent years, arterial hypertension in children and adolescents has gained ground in cardiovascular medicine thanks to progress made in several areas, fundamentally in pathophysiological and clinical research. Despite the advances that have been made in recent years, the prevention, diagnosis and treatment of high blood pressure in children and adolescents still have room for improvement. In this sense, the correct measurement of blood pressure is especially important, since it includes a series of essential elements such as the measurement devices, the regulated procedure and the interpretation of the results based on percentiles according to age, gender and height. The availability of a free access calculator facilitates the diagnosis and monitoring of arterial hypertension https://hyperchildnet.eu/.
    MeSH term(s) Adolescent ; Blood Pressure ; Blood Pressure Determination ; Body Height ; Child ; Humans ; Hypertension/diagnosis ; Hypertension/therapy ; Risk Factors
    Language English
    Publishing date 2022-06-01
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 2830901-7
    ISSN 2341-2879 ; 2341-2879
    ISSN (online) 2341-2879
    ISSN 2341-2879
    DOI 10.1016/j.anpede.2022.04.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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