Energetic and Exergetic Investigations of an Integrated Heat Pump System for Drying Applications

The main aim of this study is to conduct energetic and exergetic investigations of a dual stage heat pump for drying applications in order to evaluate the performance of the overall system. The integrated system consists of two processes, namely a drying unit and a dual stage heat pump. In the heat pump process, R-134A is used as the thermodynamic fluid and the drying unit is used to reduce the moisture content of the air. There are two evaporators used in the dual stage heat pump process: the first evaporator works at high pressures and the second evaporator works at lower pressures. The second evaporator provides supplementary cooling and drying effect for the air used in the drying unit. In the integrated system, there are two sub-coolers which provide additional heating to R-134A after the condenser. In this study, the energy and exergy efficiencies and exergy destruction rates of the overall integrated system, and each component and subprocess are calculated and discussed in detail. Exergetic performance of each component and subprocess are further investigated to identify where the highest exergy destructions occur in order to minimize irreversibilities within the integrated system and hence enhance the overall exergetic efficiency of the integrated system. The impact of environmental conditions on exergetic efficiency and exergy destruction is investigated via parametric studies. In addition, the coefficient of performance COP of the whole system and the effect of operating conditions are examined. The highest energy and exergy efficiencies occur when the drying unit’s inlet air mass flow rate is 0.5 kg/s and the environmental pressure and temperature are at 101 kPa and 298K which are 62% and 35%, respectively. The overall integrated system has a COP of around 3.8

Revealing the Manifestations of Neoliberalism in Academia: Academic Collective Action in Turkey

Academic Collective Action (ACA) stands as a small-scale collective action for social change toward liberation, independence and equity in academia. Academic collectives in Turkey, as an example of ACA, prefigure building academia outside the university by emphasizing the extent to which neoliberal academia has already prepared the groundwork for more recent waves of oppression. In this research, we aim to reveal the manifestations of neoliberalism in ACA as captured with prominent social/political psychological concepts of collective action. We conducted semi-structured interviews with 21 dismissed academics to understand the social and political psychological processes in academic collectives. The narrations of ACA were accompanied by manifestations of neoliberalism as experienced by dismissed academics. We found that, as follows from the existing conceptual tools of collective action, neoliberalism serves as an embedded contextual factor in the process of ACA. This becomes mostly visible for grievances but also for collective identifications, politicization, motivations, finding/allocating resources and sustaining academic collectives. We provide a preliminary basis to understand the role of neoliberalism in organization, mobilization and empowerment dynamics of collective action

Revealing the Manifestations of Neoliberalism in Academia: Academic Collective Action in Turkey

Academic Collective Action (ACA) stands as a small-scale collective action for social change toward liberation, independence and equity in academia. Academic collectives in Turkey, as an example of ACA, prefigure building academia outside the university by emphasizing the extent to which neoliberal academia has already prepared the groundwork for more recent waves of oppression. In this research, we aim to reveal the manifestations of neoliberalism in ACA as captured with prominent social/political psychological concepts of collective action. We conducted semi-structured interviews with 21 dismissed academics to understand the social and political psychological processes in academic collectives. The narrations of ACA were accompanied by manifestations of neoliberalism as experienced by dismissed academics. We found that, as follows from the existing conceptual tools of collective action, neoliberalism serves as an embedded contextual factor in the process of ACA. This becomes mostly visible for grievances but also for collective identifications, politicization, motivations, finding/allocating resources and sustaining academic collectives. We provide a preliminary basis to understand the role of neoliberalism in organization, mobilization and empowerment dynamics of collective action

'Not a party to this crime' : the reciprocal constitution of identity and morality by signatories of the 'Academics for Peace' petition in Turkey

In this paper, we examine how social identity, moral obligation and the relationship between the two shaped support for the 2016 Academics for Peace petition in Turkey. We examine the pre-trial statements of nine defendants charged for signing the petition and appearing in court on the same day in December 2018. We first conduct an inductive thematic analysis on one statement, and then, using the themes from this analysis, we conducted a deductive thematic analysis on the remaining eight statements. In line with the existing studies, we find considerable evidence that social identity and moral obligation are invoked as key reasons for signing in this highly repressive context. However, rather than these being separate factors, the two are reciprocally constitutive. That is, social identities define moral obligations and, at the same time, enacting moral obligations defines identity (both the position of the individual in the group and the nature of the group in the world). In discussion, we consider the broader implications of a moralized view of social identities for our understanding of both collective action and social identity processes more generally.Peer reviewe

A huge ovarian mucinous cystadenoma causing virilization, preterm labor, and persistent supine hypotensive syndrome during pregnancy

Mucinous cystadenoma (MC) of the ovary is an unilateral, multilocular cystic benign epithelial tumor. Supposed to be hormone responsive, MC reaches huge sizes during pregnancy. Aortocaval compression is common during pregnancy, especially when the pregnant woman is in the supine position. However, the compression recovers with a change in position. The authors report the first case of a huge mucinous cystadenoma of the ovary complicating pregnancy and causing virilization, premature labor, and persistent supine hypotensive syndrom

A huge ovarian mucinous cystadenoma causing virilization, preterm labor, and persistent supine hypotensive syndrome during pregnancy

Mucinous cystadenoma (MC) of the ovary is an unilateral, multilocular cystic benign epithelial tumor. Supposed to be hormone responsive, MC reaches huge sizes during pregnancy. Aortocaval compression is common during pregnancy, especially when the pregnant woman is in the supine position. However, the compression recovers with a change in position. The authors report the first case of a huge mucinous cystadenoma of the ovary complicating pregnancy and causing virilization, premature labor, and persistent supine hypotensive syndrom