One of the major areas of emphasis in academia in recent years has been interdisciplinary researc... more One of the major areas of emphasis in academia in recent years has been interdisciplinary research, a trend that promises new insights and innovations rooted in cross-disciplinary collaboration. This book is designed to help students understand the tools required for stepping beyond traditional disciplinary boundaries and applying knowledge and insights from multiple fields. Relentlessly focused on practical applications, the book will enable students to plan and execute their own interdisciplinary research projects.
This handbook offers students a methodology for carrying out interdisciplinary research at the en... more This handbook offers students a methodology for carrying out interdisciplinary research at the end of their Bachelor’s programme or during a Master’s programme. The handbook is currently being tested within various study programmes at the UvA and is based on almost twenty years of experience with interdisciplinairy studies.
This book is a special edition, compiled for to the MSc Course Research Methodologies as taught a... more This book is a special edition, compiled for to the MSc Course Research Methodologies as taught at the Faculty of Aerospace Engineering at Delft University of Technology. It is a compilation of useful chapters from several sources on how to structure, set up, carry out and write up your (thesis) research to aid you in writing your research plan. Next to that it acts as a companion during your thesis research. After introducing you to the philosophy of scientific research, subsequent chapters each contribute to the different phases of your research. The book uniquely allows for the often multi- or interdisciplinary research many of you carry out, based on the established Dutch university tradition of (semi-)independent student research, creating a thread through the process for you to follow.<br><br> This edition is a collection of chapters from <i>An Introduction to Interdisciplinary Research</i> (2016), edited by Steph Menken and Machiel Keestra, and </i&...
The aim of this study was to validate a workflow that allows structural identification of plant v... more The aim of this study was to validate a workflow that allows structural identification of plant volatiles that induce a behavioral response in insects. Due to the complexity of plant volatile emissions and the low levels at which these bioactive components tend to occur, gas chromatography-electroantennography (GC-EAD) was applied as the prime differentiator technique, i.e., to indicate particular peaks of interest in the chromatogram. In a next step, the analysis was repeated under identical conditions using GC-Orbitrap mass spectrometry (MS). Combining electron impact (EI) ionization and chemical ionization (CI) with the superior spectral resolution and mass accuracy of the technique enabled straightforward identification of these unknowns, with high confidence in a minute amount of time. Moreover, because of the intrinsic sensitivity of the technique, components that occur at trace amounts but may induce disproportional large behavioral responses are evenly well-identified. We we...
This book is a special edition, compiled for to the MSc Course Research Methodologies as taught a... more This book is a special edition, compiled for to the MSc Course Research Methodologies as taught at the Faculty of Aerospace Engineering at Delft University of Technology. It is a compilation of useful chapters from several sources on how to structure, set up, carry out and write up your (thesis) research to aid you in writing your research plan. Next to that it acts as a companion during your thesis research. After introducing you to the philosophy of scientific research, subsequent chapters each contribute to the different phases of your research. The book uniquely allows for the often multi- or interdisciplinary research many of you carry out, based on the established Dutch university tradition of (semi-)independent student research, creating a thread through the process for you to follow.<br><br> This edition is a collection of chapters from <i>An Introduction to Interdisciplinary Research</i> (2016), edited by Steph Menken and Machiel Keestra, and </i&...
Rhinocladiella mackenziei accounts for the majority of fungal brain infections in the Middle East... more Rhinocladiella mackenziei accounts for the majority of fungal brain infections in the Middle East and is restricted to the arid climate zone between Saudi Arabia and Pakistan. Neurotropic dissemination caused by this fungus has been reported in immunocompromised, but also immunocompetent individuals. If untreated, the infection is fatal. Outside of humans, the environmental niche of R. mackenziei is unknown, and the fungus has been only cultured from brain biopsies. In this paper we describe the whole genome re-sequencing of two Rhinocladiella mackenziei strains from patients in Saudi Arabia and Qatar. We assessed intra-species variation and genetic signatures to uncover the genomic basis of the pathogenesis and potential niche adaptations. We found that the duplicated genes (paralogs) are more susceptible to accumulate significant mutations. Comparative genomics with other filamentous ascomycetes revealed a diverse arsenal of genes likely engaged in pathogenicity, such as the degra...
Theory predicts that in monandrous butterfly species males should not invest in a long lifespan b... more Theory predicts that in monandrous butterfly species males should not invest in a long lifespan because receptive females quickly disappear from the mating population. In polyandrous species, however, it pays for males to invest in longevity, which increases the number of mating opportunities and thus reproductive fitness. We tested an extension of this idea and compared male and female lifespan of two closely relatedYponomeutaspecies with different degree of polyandry. Our results confirmed the theoretical prediction that male lifespan is fine-tuned to female receptive lifespan; once-mated males and females of both polyandrous species had an equal lifespan. However, the degree of polyandry was not reflected in male relative to female lifespan. The observed similar female and male lifespan could largely be attributed to a dramatic reduction of female lifespan after mating.
... by JOHAN PH. CRONAU1 and STEPH BJ MENKEN2 (Department of Biosystematics, Vrije Universiteit, ... more ... by JOHAN PH. CRONAU1 and STEPH BJ MENKEN2 (Department of Biosystematics, Vrije Universiteit, Amsterdam, The Netherlands) ... because major mor-phological structures are very similar in species belonging to the same species group (VAN NIEUKERKEN, 1985). ...
... Central projections of the trigeminal, facial and vagal nerves in the mallard duck (1973). Pa... more ... Central projections of the trigeminal, facial and vagal nerves in the mallard duck (1973). Pagina-navigatie: Main. Title, Central projections of the trigeminal, facial and vagal nerves in the mallard duck. ... Royal Netherlands Academy of Arts and Sciences. ...
Many male Lepidoptera transfer a large ejaculate, containing nutrients and/or secondary plant com... more Many male Lepidoptera transfer a large ejaculate, containing nutrients and/or secondary plant compounds. In principle this 'nuptial gift' could help to increase female survival and longevity. Here we investigated the effects of both multiple mating and extra nutrition in the adult stage on males and females in two species of Yponomeuta. Mated females had significantly shorter live spans than unmated females and similar fecundity. Females therefore do not appear to benefit from remating, which suggests that the considerable weight transfer of the males to the females during mating does not provide nutritional value. Females of Y. cagnagellus, which received honey throughout their adult lifetime, lived significantly longer and laid larger egg batches than females, that did not receive honey. In Y. padellus this effect was not found. It is concluded that neither species benefits from multiple mating and that in Yponomeuta cagnagellus adult nutrition rather then mating increases female reproductive output and longevity, which contrasts with many studies of Macrolepidoptera.
One of the major areas of emphasis in academia in recent years has been interdisciplinary researc... more One of the major areas of emphasis in academia in recent years has been interdisciplinary research, a trend that promises new insights and innovations rooted in cross-disciplinary collaboration. This book is designed to help students understand the tools required for stepping beyond traditional disciplinary boundaries and applying knowledge and insights from multiple fields. Relentlessly focused on practical applications, the book will enable students to plan and execute their own interdisciplinary research projects.
This handbook offers students a methodology for carrying out interdisciplinary research at the en... more This handbook offers students a methodology for carrying out interdisciplinary research at the end of their Bachelor’s programme or during a Master’s programme. The handbook is currently being tested within various study programmes at the UvA and is based on almost twenty years of experience with interdisciplinairy studies.
This book is a special edition, compiled for to the MSc Course Research Methodologies as taught a... more This book is a special edition, compiled for to the MSc Course Research Methodologies as taught at the Faculty of Aerospace Engineering at Delft University of Technology. It is a compilation of useful chapters from several sources on how to structure, set up, carry out and write up your (thesis) research to aid you in writing your research plan. Next to that it acts as a companion during your thesis research. After introducing you to the philosophy of scientific research, subsequent chapters each contribute to the different phases of your research. The book uniquely allows for the often multi- or interdisciplinary research many of you carry out, based on the established Dutch university tradition of (semi-)independent student research, creating a thread through the process for you to follow.<br><br> This edition is a collection of chapters from <i>An Introduction to Interdisciplinary Research</i> (2016), edited by Steph Menken and Machiel Keestra, and </i&...
The aim of this study was to validate a workflow that allows structural identification of plant v... more The aim of this study was to validate a workflow that allows structural identification of plant volatiles that induce a behavioral response in insects. Due to the complexity of plant volatile emissions and the low levels at which these bioactive components tend to occur, gas chromatography-electroantennography (GC-EAD) was applied as the prime differentiator technique, i.e., to indicate particular peaks of interest in the chromatogram. In a next step, the analysis was repeated under identical conditions using GC-Orbitrap mass spectrometry (MS). Combining electron impact (EI) ionization and chemical ionization (CI) with the superior spectral resolution and mass accuracy of the technique enabled straightforward identification of these unknowns, with high confidence in a minute amount of time. Moreover, because of the intrinsic sensitivity of the technique, components that occur at trace amounts but may induce disproportional large behavioral responses are evenly well-identified. We we...
This book is a special edition, compiled for to the MSc Course Research Methodologies as taught a... more This book is a special edition, compiled for to the MSc Course Research Methodologies as taught at the Faculty of Aerospace Engineering at Delft University of Technology. It is a compilation of useful chapters from several sources on how to structure, set up, carry out and write up your (thesis) research to aid you in writing your research plan. Next to that it acts as a companion during your thesis research. After introducing you to the philosophy of scientific research, subsequent chapters each contribute to the different phases of your research. The book uniquely allows for the often multi- or interdisciplinary research many of you carry out, based on the established Dutch university tradition of (semi-)independent student research, creating a thread through the process for you to follow.<br><br> This edition is a collection of chapters from <i>An Introduction to Interdisciplinary Research</i> (2016), edited by Steph Menken and Machiel Keestra, and </i&...
Rhinocladiella mackenziei accounts for the majority of fungal brain infections in the Middle East... more Rhinocladiella mackenziei accounts for the majority of fungal brain infections in the Middle East and is restricted to the arid climate zone between Saudi Arabia and Pakistan. Neurotropic dissemination caused by this fungus has been reported in immunocompromised, but also immunocompetent individuals. If untreated, the infection is fatal. Outside of humans, the environmental niche of R. mackenziei is unknown, and the fungus has been only cultured from brain biopsies. In this paper we describe the whole genome re-sequencing of two Rhinocladiella mackenziei strains from patients in Saudi Arabia and Qatar. We assessed intra-species variation and genetic signatures to uncover the genomic basis of the pathogenesis and potential niche adaptations. We found that the duplicated genes (paralogs) are more susceptible to accumulate significant mutations. Comparative genomics with other filamentous ascomycetes revealed a diverse arsenal of genes likely engaged in pathogenicity, such as the degra...
Theory predicts that in monandrous butterfly species males should not invest in a long lifespan b... more Theory predicts that in monandrous butterfly species males should not invest in a long lifespan because receptive females quickly disappear from the mating population. In polyandrous species, however, it pays for males to invest in longevity, which increases the number of mating opportunities and thus reproductive fitness. We tested an extension of this idea and compared male and female lifespan of two closely relatedYponomeutaspecies with different degree of polyandry. Our results confirmed the theoretical prediction that male lifespan is fine-tuned to female receptive lifespan; once-mated males and females of both polyandrous species had an equal lifespan. However, the degree of polyandry was not reflected in male relative to female lifespan. The observed similar female and male lifespan could largely be attributed to a dramatic reduction of female lifespan after mating.
... by JOHAN PH. CRONAU1 and STEPH BJ MENKEN2 (Department of Biosystematics, Vrije Universiteit, ... more ... by JOHAN PH. CRONAU1 and STEPH BJ MENKEN2 (Department of Biosystematics, Vrije Universiteit, Amsterdam, The Netherlands) ... because major mor-phological structures are very similar in species belonging to the same species group (VAN NIEUKERKEN, 1985). ...
... Central projections of the trigeminal, facial and vagal nerves in the mallard duck (1973). Pa... more ... Central projections of the trigeminal, facial and vagal nerves in the mallard duck (1973). Pagina-navigatie: Main. Title, Central projections of the trigeminal, facial and vagal nerves in the mallard duck. ... Royal Netherlands Academy of Arts and Sciences. ...
Many male Lepidoptera transfer a large ejaculate, containing nutrients and/or secondary plant com... more Many male Lepidoptera transfer a large ejaculate, containing nutrients and/or secondary plant compounds. In principle this 'nuptial gift' could help to increase female survival and longevity. Here we investigated the effects of both multiple mating and extra nutrition in the adult stage on males and females in two species of Yponomeuta. Mated females had significantly shorter live spans than unmated females and similar fecundity. Females therefore do not appear to benefit from remating, which suggests that the considerable weight transfer of the males to the females during mating does not provide nutritional value. Females of Y. cagnagellus, which received honey throughout their adult lifetime, lived significantly longer and laid larger egg batches than females, that did not receive honey. In Y. padellus this effect was not found. It is concluded that neither species benefits from multiple mating and that in Yponomeuta cagnagellus adult nutrition rather then mating increases female reproductive output and longevity, which contrasts with many studies of Macrolepidoptera.
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