LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 70

Search options

  1. Book ; Article ; Online: Measuring gender and social norms in agrifood systems

    Seymour, Greg / Cole, Steven M. / Costenbader, E. / Mwakanyamale, Devis / Adeyeye, Olajumoke / Feleke, S. / Ferguson, Nathaniel / Heckert, Jessica / Msita, Sarah / Litvin, K. / Johnson, T.P.

    Evidence from Tanzania and Nigeria

    2024  

    Keywords gender ; agrifood systems ; gender equality ; social norms ; women's empowerment
    Language English
    Publishing date 2024-01-01T04:20:39Z
    Publisher Gender Equality Initiative
    Publishing country fr
    Document type Book ; Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  2. Book ; Online: Measuring gender and social norms in agrifood systems

    Seymour, Greg / Cole, Steven M. / Costenbader, E. / Mwakanyamale, Devis / Adeyeye, Olajumoke / Feleke, S. / Ferguson, Nathaniel / Heckert, Jessica / Msita, Sarah / Litvin, K. / Johnson, T.P.

    Evidence from Nigeria and Tanzania

    2023  

    Keywords agrifood systems ; gender ; gender equality ; food systems ; social equality
    Language English
    Publishing date 2023-12-20T16:34:54Z
    Publisher Gender Equality Initiative
    Publishing country fr
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article: Actions of epinephrine on the contractility of fast and slow skeletal muscle fibres in teleosts.

    Johnson, T P / Moon, T W / Johnston, I A

    Fish physiology and biochemistry

    2013  Volume 9, Issue 1, Page(s) 83–89

    Abstract: Fast and slow muscle fibers were isolated from the myotomes of atlantic cod (Gadus morhua L.) and sculpin (Myoxocephalus scorpius L.). Epinephrine was found to have no effect on twitch or sub-tetanic contractions in fast muscle fibres. Isoprenaline (10(- ... ...

    Abstract Fast and slow muscle fibers were isolated from the myotomes of atlantic cod (Gadus morhua L.) and sculpin (Myoxocephalus scorpius L.). Epinephrine was found to have no effect on twitch or sub-tetanic contractions in fast muscle fibres. Isoprenaline (10(-6)M) had no effect on the contractility of slow muscle fibres. In contrast, epinephrine elicited a dose-dependent decrease in the half-time for twitch relaxation (t1/2r), and in most cases a decrease in twitch amplitude. The maximum decrease in t1/2r was around 5-20% of control values (at 10(-6)M epinephrine), with a half maximal response at about 30 nmol l(-1). Responses to epinephrine were unaffected by propranolol and reversed by phentolamine, consistent with the stimulation of α-adrenoreceptors. 10(-6)M epinephrine produced a rise in cAMP levels from 1.8 to 3.1 pmol mg dry wt(-1) in cod slow fibres. However, the cellular mechanism underlying the action of epinephrine is unclear since forskolin, a potent activator of adenylate cyclase activity, where it has been investigated, was found to increase not decrease twitch duration and amplitude. The responses of fast and slow fibres to epinephrine and its antagonists were similar in summer (13°C) and winter acclimatized (5-6°C) sculpin.It is suggested that epinephrine may act to modulate the active state of slow muscle fibres at high cruising speeds and thereby increase swimming performance.
    Language English
    Publishing date 2013-11-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 292907-7
    ISSN 1573-5168 ; 0920-1742
    ISSN (online) 1573-5168
    ISSN 0920-1742
    DOI 10.1007/BF01987615
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Persistent and aggressive interactions with the police: potential mental health implications.

    Hirschtick, J L / Homan, S M / Rauscher, G / Rubin, L H / Johnson, T P / Peterson, C E / Persky, V W

    Epidemiology and psychiatric sciences

    2019  Volume 29, Page(s) e19

    Abstract: Aims: Little is known about the potential health impact of police encounters despite a ubiquitous police presence in many disadvantaged urban environments. In this paper, we assess whether persistent or aggressive interactions with the police are ... ...

    Abstract Aims: Little is known about the potential health impact of police encounters despite a ubiquitous police presence in many disadvantaged urban environments. In this paper, we assess whether persistent or aggressive interactions with the police are associated with poor mental health outcomes in a sample of primarily low-income communities of colour in Chicago.
    Methods: Between March 2015 and September 2016, we surveyed 1543 adults in ten diverse Chicago communities using a multistage probability design. The survey had over 350 questions on health and social factors, including police exposure and mental health status. We use sex-stratified logistic regression to examine associations between persistent police exposure (defined as a high number of lifetime police stops) or aggressive police exposure (defined as threat or use of police force during the respondent's most recent police stop) and the presence of post-traumatic stress disorder (PTSD) or depressive symptoms.
    Results: Men reporting a high number of lifetime police stops have three times greater odds of current PTSD symptoms compared with men who did not report high lifetime police stops (OR 3.1, 95% CI 1.3-7.6), after adjusting for respondent age, race/ethnicity, education, history of homelessness, prior diagnosis of PTSD and neighbourhood violent crime rate. Women reporting a high number of lifetime police stops have two times greater odds of current PTSD symptoms, although the results are not statistically significant after adjustment (OR 2.0, 95% CI 0.9-4.2). Neither persistent nor aggressive police exposure is significantly associated with current depressive symptoms in our sample.
    Conclusions: Our findings support existing preliminary evidence of an association between high lifetime police stops and PTSD symptoms. If future research can confirm as causal, these results have considerable public health implications given the frequent interaction between police and residents in disadvantaged communities in large urban areas.
    MeSH term(s) Adult ; Aggression/psychology ; Chicago/epidemiology ; Depressive Disorder/epidemiology ; Depressive Disorder/psychology ; Female ; Humans ; Male ; Police/psychology ; Poverty/psychology ; Residence Characteristics ; Stress Disorders, Post-Traumatic/epidemiology ; Stress Disorders, Post-Traumatic/psychology ; Urban Population
    Language English
    Publishing date 2019-02-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2607964-1
    ISSN 2045-7979 ; 2045-7960
    ISSN (online) 2045-7979
    ISSN 2045-7960
    DOI 10.1017/S2045796019000015
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Comments on "The moral economies of homeless heroin addicts: confronting ethnography, HIV risk, and everyday violence in San Francisco shooting encampments," by Phillippe Bourgois.

    Johnson, T P

    Substance use & misuse

    1998  Volume 33, Issue 11, Page(s) 2365–2368

    MeSH term(s) Adult ; Anthropology, Cultural ; Female ; HIV Infections/prevention & control ; HIV Infections/psychology ; HIV Infections/transmission ; Health Knowledge, Attitudes, Practice ; Homeless Persons/psychology ; Homeless Persons/statistics & numerical data ; Humans ; Interpersonal Relations ; Male ; Morals ; San Francisco/epidemiology ; Social Facilitation ; Urban Population/statistics & numerical data ; Violence/psychology ; Violence/statistics & numerical data
    Language English
    Publishing date 1998-09
    Publishing country England
    Document type Comment ; Journal Article
    ZDB-ID 1310358-1
    ISSN 1532-2491 ; 1082-6084
    ISSN (online) 1532-2491
    ISSN 1082-6084
    DOI 10.3109/10826089809056264
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Substance use among homeless, immigrant, and refugee populations: an international perspective. Introduction.

    Johnson, T P

    Substance use & misuse

    1997  Volume 32, Issue 7-8, Page(s) 793–803

    MeSH term(s) Adolescent ; Adult ; Alcoholism/epidemiology ; Alcoholism/psychology ; Cross-Cultural Comparison ; Homeless Persons/psychology ; Homeless Persons/statistics & numerical data ; Humans ; Psychotropic Drugs ; Refugees/psychology ; Refugees/statistics & numerical data ; Street Drugs ; Substance-Related Disorders/epidemiology ; Substance-Related Disorders/psychology ; United States/epidemiology
    Chemical Substances Psychotropic Drugs ; Street Drugs
    Language English
    Publishing date 1997-06
    Publishing country England
    Document type Comparative Study ; Journal Article
    ZDB-ID 1310358-1
    ISSN 1532-2491 ; 1082-6084
    ISSN (online) 1532-2491
    ISSN 1082-6084
    DOI 10.3109/10826089709055859
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: Available resources for investigating substance use among homeless, immigrant, and refugee populations.

    Johnson, T P

    Substance use & misuse

    1997  Volume 32, Issue 7-8, Page(s) 1005–1010

    MeSH term(s) Computer Communication Networks ; Emigration and Immigration/statistics & numerical data ; Homeless Persons/psychology ; Homeless Persons/statistics & numerical data ; Humans ; Information Services ; Refugees/statistics & numerical data ; Substance-Related Disorders/epidemiology
    Language English
    Publishing date 1997-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 1310358-1
    ISSN 1532-2491 ; 1082-6084
    ISSN (online) 1532-2491
    ISSN 1082-6084
    DOI 10.3109/10826089709055868
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Alcohol and drug use among displaced persons: an overview.

    Johnson, T P

    Substance use & misuse

    1996  Volume 31, Issue 13, Page(s) 1853–1889

    Abstract: This paper provides a brief introduction to current research concerned with alcohol and drug use, misuse, and treatment among displaced persons, including immigrants, refugees, and homeless individuals. Among the topics examined are theoretical issues ... ...

    Abstract This paper provides a brief introduction to current research concerned with alcohol and drug use, misuse, and treatment among displaced persons, including immigrants, refugees, and homeless individuals. Among the topics examined are theoretical issues related to our understanding of substance use processes among displaced populations, methodological considerations, and directions for future research. The review is followed by an annotated bibliography of recent work related to this topic.
    MeSH term(s) Bibliography, Descriptive ; Emigration and Immigration ; Homeless Persons ; Humans ; Organizations ; Refugees ; Risk Factors ; Substance-Related Disorders/etiology ; Substance-Related Disorders/therapy
    Language English
    Publishing date 1996-11
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1310358-1
    ISSN 1532-2491 ; 1082-6084
    ISSN (online) 1532-2491
    ISSN 1082-6084
    DOI 10.3109/10826089609064003
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: A viscoelastic, viscoplastic model of cortical bone valid at low and high strain rates.

    Johnson, T P M / Socrate, S / Boyce, M C

    Acta biomaterialia

    2010  Volume 6, Issue 10, Page(s) 4073–4080

    Abstract: The stress-strain behavior of cortical bone is well known to be strain-rate dependent, exhibiting both viscoelastic and viscoplastic behavior. Viscoelasticity has been demonstrated in literature data with initial modulus increasing by more than a factor ... ...

    Abstract The stress-strain behavior of cortical bone is well known to be strain-rate dependent, exhibiting both viscoelastic and viscoplastic behavior. Viscoelasticity has been demonstrated in literature data with initial modulus increasing by more than a factor of 2 as applied strain rate is increased from 0.001 to 1500 s(-1). A strong dependence of yield on strain rate has also been reported in the literature, with the yield stress at 250 s(-1) having been observed to be more than twice that at 0.001 s(-1), demonstrating the material viscoplasticity. Constitutive models which capture this rate-dependent behavior from very low to very high strain rates are required in order to model and simulate the full range of loading conditions which may be experienced in vivo; particularly those involving impact, ballistic and blast events. This paper proposes a new viscoelastic, viscoplastic constitutive model which has been developed to meet these requirements. The model is fitted to three sets of stress-strain measurements from the literature and shown to be valid at strain rates ranging over seven orders of magnitude.
    MeSH term(s) Animals ; Bone and Bones/anatomy & histology ; Bone and Bones/chemistry ; Compressive Strength ; Elasticity ; Humans ; Models, Biological ; Stress, Mechanical ; Tensile Strength ; Viscosity ; Weight-Bearing
    Language English
    Publishing date 2010-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2173841-5
    ISSN 1878-7568 ; 1742-7061
    ISSN (online) 1878-7568
    ISSN 1742-7061
    DOI 10.1016/j.actbio.2010.04.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Cane juice analysis by near infrared (NIR) to determine grower payment

    Johnson, T.P

    Sugar Processing Research Conference. Proceedings of the ... Sugar Processing Research Conference / Dec 2000.

    2000  

    Keywords sugarcane
    Language English
    Dates of publication 2000-12
    Size p. 194-204.
    Document type Article
    Note Meeting held April 9-12, 2000, Porto, Portugal.
    ZDB-ID 596311-4
    ISSN 0730-6490
    ISSN 0730-6490
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

To top