78 research outputs found
Quando lo sfruttamento è smart
No full textThe essay examines the ways in which work is used in digital plat. forms. The author proposes to define "smart exploitation" the specific characteristics of the use of work by digital platforms such as Uber. El ements are identified, such as algorithmic management, datification and gamification, highlighting that the freedom of gig workers actually hidks a form of self-exploitation induced by the technical operating models of the platforms themselves. The "smart exploitation" therefore alludes to a
model of technoregulation that promotes the fake self-employment of gig workers
La libera circolazione comunitaria di servizi labour intensive
No full textThe Author assumes that the liberalization of the services in the Eu has a direct impact on national labour law. This thesis is illustrated, on one hand, clarifying the concept of "service" in the Ec Treaty and in the Italian legal system. On the other hand, the essay underlines as, in many cases, the provision of services is characterized by a labour intensive nature. In this sense the cross-border service provision makes the transnational workers mobility (posting) possible but, at the same time, it affects legal and contractual provision concerning employment conditions applicable in the host Member States. Finally, it is highlighted how the development of the internal market for services may generate risks of social dumping and regulatory competition among Member States
بانو قدسیہ کے افسانوں کا فکری تنوع
No full textBano Qudsia is such a great story-teller of the 20th century that she secured a distinguished place among the fiction writers of Urdu Literature after harmonizing her bold creative art with simple narrative and her main traits were her economic and social consciousness, psychological conspicuousness, unique notions about life and observation of the universe. The following article highlights the diverse reflective aspects of her fiction writing. I addition to this, this article brings to the limelight the personality of Bano Qudsia who is the product of a specific social setup and has the literary capabilities of her readers and it also depicts the feminist consciousness of the sub-continent
Studying the role of noise in E. coli chemotaxis
No full textBiochemical signaling networks allow living cells to adapt to changing environments, but these networks have to cope with unavoidable number fluctuations (“noise”) in their molecular constituents. These fluctuations can arise over time in an individual cell (due to inherent stochasticity in chemical reactions) or manifest themselves as differences between individual cells. The chemotaxis signaling network of Escherichia coli, using which these bacteria modulate their random walk-like run/tumble swimming pattern to navigate their environment, is a paradigm for the role of noise in cell signaling. The E. coli chemotaxis network thus has been my model system of choice to characterize and study the role of these different types of noise.
A key signaling protein in this network, CheY, when activated by phosphorylation, causes a switch in the rotational direction of the flagellar motors propelling the cell, leading to tumbling. Since the degree of CheY activation/phosphorylation is a function of the cell’s environment, the CheY-P concentration, [CheY-P], is a measure of the output of the chemotaxis network and random fluctuations in [CheY-P] in time provide a proxy for network noise. However, measuring these fluctuations in the single cell, especially at the relevant timescale of individual run and tumble “decision making” events, remains a challenge. In my thesis work, we developed an approach to quantify short timescale (0.5-5 s) network noise due to [CheY-P] fluctuations using rotational switching statistics of individual flagella observed using time-resolved fluorescence microscopy of individual optically trapped E. coli cells. This work revealed the existence of high network noise at steady state which may be critical to driving cell tumbling. Upon activation of the network, this noise is reduced dramatically; we connect this reduction, through modeling, to the existence of an intrinsic kinetic ceiling on network activation, which may be functionally important to prevent unproductive tumbling.
In collaboration with the research groups of Seppe Kuehn, Ido Golding and Nigel Goldenfeld, using single-cell optical trapping, I also studied evolution in E. coli motility/chemotaxis and the cell-cell variation therein in strains that were selected for faster collective migration through agar. In this work, we attempt to connect changes in relevant molecular constituents of the chemotaxis network, CheR and CheB, to changes in motility and chemotaxis at the individual and population level.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01The student, Roshni Bano, accepted the attached license on 2020-11-28 at 12:06.The student, Roshni Bano, submitted this Dissertation for approval on 2020-11-28 at 12:18.This Dissertation was approved for publication on 2020-12-03 at 16:25.DSpace SAF Submission Ingestion Package generated from Vireo submission #15973 on 2021-03-04 at 16:32:37Made available in DSpace on 2021-03-05T21:45:38Z (GMT). No. of bitstreams: 2
BANO-DISSERTATION-2020.pdf: 7517044 bytes, checksum: 47d62521d1beb3f592bee9f7a2d6e8c7 (MD5)
LICENSE.txt: 4208 bytes, checksum: 30550c75130f4c9b6ca05d35948b08b6 (MD5)
Previous issue date: 2020-12-03Embargo set by: Seth Robbins for item 117309
Lift date: 2023-03-05T21:45:47Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 117309
Lift date: 2023-03-05T21:47:41Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemAuthor requested closed access (OA after 2yrs) in Vireo ETD systemLimite
Isolation and purification of marine cyanobacteria in laboratory conditions
No full textTwenty four species of cyanobacteria were isolated from a variety of marine habitats collected from Karachi coast and open ocean waters. The species of cyanobacteria were isolated from mix culture using serial dilution techniques at room temperature under constant illumination. The isolated species consist of six unicellular and eighteen filamentous non-heterocystous cyanobacterial species. Heterocystous forms were not obtained during these studies. Isolates were maintained in Marine Biology Culture Collection (MBCC)
Isolation and purification of marine cyanobacteria in laboratory conditions
No full textTwenty four species of cyanobacteria were isolated from a variety of marine habitats collected from Karachi coast and open ocean waters. The species of cyanobacteria were isolated from mix culture using serial dilution techniques at room temperature under constant illumination. The isolated species consist of six unicellular and eighteen filamentous non-heterocystous cyanobacterial species. Heterocystous forms were not obtained during these studies. Isolates were maintained in Marine Biology Culture Collection (MBCC)
RETRACTED ARTICLE: In vitro and in vivo biocompatibility study of polyacrylate TiO2@Ag coated nanoparticles for the radiation dose enhancement
No full textWe, the Editors and Publisher of the journal Artificial Cells, Nanomedicine, and Biotechnology, have retracted the following article:Ateeque Ur Rehman, Muhammad Hassan, Sadia Bano, Khizir Farooq, Aun Raza & Muhammad Naeem Anjum (2021) In vitro and in vivo biocompatibility study of polyacrylate TiO2@Ag coated nanoparticles for the radiation dose enhancement. Artificial Cells, Nanomedicine, and Biotechnology, 49(1), 185–193, DOI: 10.1080/21691401.2021.1889574Since publication, concerns were raised about the methods and some images in this article. Specifically, some images in Figure 7 have been duplicated and rotated. When approached for an explanation, the authors were unable to provide a satisfactory explanation for this. The corresponding author has been informed of our decision to retract.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”
Investigation of electronic structure and chemical bonding of intermetallic Pd2HfIn: An ab-initio study
No full text
GPR data imaging and interpretation-Introduction
No full textEditorialGreen Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Applied Geophysics and Petrophysic
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