The reification of concrete work in Egyptian film production

The anthropology of cinema has been instrumental in describing the ‘unseen’ labour invested in making films. What has been less explored is film workers’ erasure of each other's concrete effort in a similar manner. This process is what I call ‘reification’. Extending Georg Lukács's reflections, I argue that the relations of production throughout the film-making process seem to be transformed into relations between things (images and sounds) in a recurring pattern. In Egypt, this transformation impacts every juncture in commercial film production, and film workers manage its continuous impact via conventional means of recognition towards their concrete work. The overarching project is to understand, on the one hand, how the serial erasure of concrete work contributes to creating the film as a commodity and, on the other hand, how workers find value in their work under conditions where their effort is consumed by the things that they produce.     

Sometimes Similar,Sometimes Dangerously Different: Exploring Resonance,Laminations and Subject-Formation in South India

This paper explores the ways in which particular individuals or groups are cast as problematically other at certain times by exploring the relationship between empathy and antipathy – identified as products of ‘resonance’, or a certain kind of responsiveness to embodied encounters with others and also to concerns, ideas and discourses that originate locally or from elsewhere. Consequent effects on subject-formation and affordances of social possibilities are explored through an intensive focus on one Muslim man. The notion of a ‘laminated subjectivity’ is presented and elucidated. The paper draws on ethnography conducted in a Tamil town and is set against the backdrop of Hindu–Muslim relations in India.     

Competing views on cancer

Despite intense research efforts that have provided enormous insight, cancer continues to be a poorly understood disease. There has been much debate over whether the cancerous state can be said to originate in a single cell or whether it is a reflection of aberrant behaviour on the part of a ‘society of cells’. This article presents, in the form of a debate conducted among the authors, three views of how the problem might be addressed. We do not claim that the views exhaust all possibilities. These views are (a) the tissue organization field theory (TOFT) that is based on a breakdown of tissue organization involving many cells from different embryological layers, (b) the cancer stem cell (CSC) hypothesis that focuses on genetic and epigenetic changes that take place within single cells, and (c) the proposition that rewiring of the cell’s protein interaction networks mediated by intrinsically disordered proteins (IDPs) drives the tumorigenic process. The views are based on different philosophical approaches. In detail, they differ on some points and agree on others. It is left to the reader to decide whether one approach to understanding cancer appears more promising than the other.     

The ‘sparkle’ in fake eyes – the protective effect of mimic eyespots in lepidoptera

Many species of lepidoptera bear conspicuous circular patterns on their wings, known as eyespots, that are hypothesised to protect their bearers against predatory birds. In this study, we focus on a small but ubiquitous feature occurring naturally in lepidopteran eyespots, namely the so‐called ‘sparkle’. The ‘pupil’ in an eyespot is often highlighted by a ‘sparkle’, which is hypothesised to mimic a natural corneal total light reflection evident as a highlight, twinkle, or sparkle in the vertebrate eye. In a study exploring the presence of such sparkles, we found that 53% of lepidopteran eyespots exceeding 1 mm in diameter have a central, pinpoint‐like ‘sparkle’, 12% have a marginal, crescent‐shaped ‘sparkle’, 13% have a semi‐circular ‘sparkle’, and 22% have an intermediate semi‐circular to crescent‐shaped ‘sparkle’. In the lepidopterans’ natural resting position, the marginal ‘sparkles’ are positioned in the upper part of the eyespots’‘pupil’ and thus may create the illusion of a spherical eyeball. The ‘sparkles’ in lepidopteran eyespots do not only appear white to humans, but also reflect ultraviolet light. White and UV‐reflecting ‘sparkles’ also appear ‘white’ for UV‐sensitive viewers such as birds, and thus may effectively mimic the natural highlight in vertebrate eyes as an area of total light reflection. In field experiments using lepidopteran dummies baited with a mealworm, we show that the ‘sparkle’ is one of several components of eyespots eliciting a deterrent effect and that eyespots with a ‘sparkle’ in a natural position have a stronger deterrent effect than those with a ‘sparkle’ in an unnatural position. These findings support the eye mimicry hypothesis that better vertebrate eye mimicry improves the deterrent effect of eyespots.     

A portable device for measuring donor corneal transparency in eye banks

To develop a portable device for measuring the donor corneal transparency and validate its efficacy for corneal evaluation in the eye-banks and for research. The transparency device (TD) has a light source, a detachable system for corneal insertion and a base for light transmission. The probe detects the transmitted light which is measured by a lux-meter. A contact lens was set as ‘control’ to reduce the light scattering concern, an empty petri-plate as ‘blank’ and the cornea as ‘sample’. Two experts and non-experts (masked) observed the corneas for subjective analysis which was then compared using the TD. The parameters observed were scars, foreign-body, stromal-deformities, folds, thickness and opacity which were then converted to a relative overall percentage by the observer. Twenty corneas were evaluated for correlation, five tissues to obtain standard-deviation and twenty-four pairs for a comparative study. Experts mimicked the eye-banks with long-term experience while non-experts mimicked the emerging eye-banks. Subjective values by the experts closely resembled the measurements by TD. The average correlation between the experts and the non-experts to TD was 0.985 and 0.960 respectively. TD showed higher reproducibility than experts followed by the non-experts. The comparative study showed that increase in thickness reduces the transparency. TD is portable, easy, efficient, maintains sterility and less expensive hence the emerging eye-banks and researchers can use to raise their standards and evaluate the transparency for in vitro tests and comparative studies. The suitable transparency for the cornea deemed for clinical applications was found to be >75 %.     

A fine structural study of Olisthodiscus luteus carter

Fine structurally, Olisthodiscus luteus is characterised by possessing a sub-surface layer of electron opaque ‘spheres’ approximately 35 nm in diameter. These ‘spheres’ originate in vesicles surrounding the Golgi apparatus. The flagella are of the heterokont type and are attached, at their bases, by a large complicated root to the nucleus. The mitochondria, besides containing microvilli, contain fine fibrils of material that can be removed by treatment with DNase.

The phyletic affinities of Olisthodiscus are discussed with reference to this fine structural study and recent biochemical work. Although no conclusive evidence is available, it is suggested that Olisthodiscus should be transferred from the Xanthophyceae temporarily to the Chrysophyceae.     

Instruments of Judgment: Inscribing Organic Processes in Late Eighteenth-Century Germany

The paper argues for the importance to Kant's critique of judgment of epistemological reflections upon the problematics of experimentation on organic processes. It examines the investigations of generation by Wolff and Blumenbach, demonstrating how their experimental practices mediated reflectively between organic phenomena and their conceptualisation, acting as instruments of their judgments of these processes. It then reads Kant's ‘Kritik der teleologischen Urteilskraft’ in light of these experimental investigations, arguing that Kant highlights how the problematic relation between organic phenomena and their conceptualisation manifested in such investigations is opened up as a space for reflection, thus making this act of judgment conscious. The relation between Kant's critiques of judgment in his first and third critiques are then discussed, and it is argued that the reflective character of judgment highlighted in the judgment of organic processes draws into focus the problematic aspects of all judgments of natural phenomena, by making conscious the synthetic process of judgment effected by unconscious acts of the imagination in the first critique. Finally, the paper examines Humboldt's galvanic experiments, showing how they were informed by Kant's critical philosophy, but also how they contributed to the blurring of the boundaries between the judgment of organic and inorganic processes. Thus it is claimed that the reflections upon judgment in the Kritik der Urteilskraft problematized rather than clarified Kant's treatment of judgment in the first critique.     

‘Are we all secular/ized yet?’: reflections on David Goldberg’s ‘Are we all post-racial yet?’

ABSTRACT

This paper expands upon some of Goldberg’s initial reflections regarding the new type of ‘subject’ that is at the heart of post-raciality. A particular attention is paid to the connection with religion, as many of the current conflicts in Europe have been articulated through the grammar of secularism and religion, especially in relationship to Islam. This observation invites us to consider how this ‘racialization of religion’ figures as a reminder of the central role of this politico-theological question in the demarcation of who counts as a proper (political) subject, and how the current debates about Islam figure as a reminder of that.     

砧木类型对甜樱桃花芽多胺代谢相关基因表达和休眠的影响

为验证砧木类型对甜樱桃多胺代谢和花芽休眠的影响,该研究以嫁接于不同砧木——矮化砧木‘吉塞拉6号’[Gisela 6,(G6)]和乔化砧木‘马扎德’(Mazzard)的甜樱桃品种‘罗亚理’为试材,通过田间观察确定嫁接于两种砧木的‘罗亚理’休眠期和花期,利用生物信息学、基因克隆、实时荧光定量、亚细胞定位和双分子荧光互补等手...     

Cellulose component of Acetobacter xylinum pellicle: morphology and its significance for the mechanism of microfibril formation

The cellulose component of native, minimally disturbed pellicles of Acetobacter sylinum has a three-dimensional, microfibrillar, interconnected, ‘brush-wood’ structure. This structure could not originate from a spinneret or extrusion mechanism of cellulose microfibril formation. It may be produced by a mechanism of spontaneous association and post factor crystallization of preformed, transient I → 4β glucans.     

Fertility and birth in an unfamiliar environment: The case of Turkish migrant women in Sweden

The debate on critical history has taken on a new dimension in recent years, challenging the very status of history’ as a privileged, objective discourse. Historians, and practitioners of other disciplines, have used the ‘voice from the edge’, and the ‘fragmentary statement’ to disturb the totalizing and normalizing character of historical writing. Other historians have condemned this disturbing of the ‘centre’, of the inherited form of historical narrative and of well‐established objects of investigation, for its nihilism and its ‘absolute’ relativism. The following article returns to this debate with some reflections based on materials drawn mainly from India.     

What are the policy priorities for sustaining ecological processes? A case study from Victoria,Australia

Summary Developments in ecological theory indicate that ecological processes have major implications for sustaining biodiversity and the provision of ecosystem services. Consequently, conservation actions that focus solely on particular species, vegetation communities, habitats or sites (‘assets’) are unlikely to be effective over the long term unless the ecological processes that support them continue to function. Efforts to sustain biodiversity must embrace both ‘assets’ and ‘process‐oriented’ approaches. Existing knowledge about ecological processes, incomplete though it is, has not been adequately considered in government decision making. It is, therefore, necessary to consider how to build consideration of ecological processes into legislative and institutional frameworks, policy and planning processes, and on‐ground environmental management. Drawing on insights from interviews, a facilitated workshop, and a literature review, this paper identifies a suite of policy priorities and associated reforms which should assist in ensuring that ecological processes are given more attention in policy‐making processes. It is concluded that a multi‐pronged approach is required, because there are no ‘silver bullets’ for sustaining ecological processes.     

Polarization of human donor corneas

To investigate the de-orientation effect of DSAEK grafts by observing the cross patterns and polarization power of human donor corneas using a polarizing device (Lumaxis^®). Forty human donor corneas were placed in small petri-plates with epithelial side facing up. Polarizing power (arbitrary unit) and crosses were monitored and recorded by the software. The tissue was marked at ‘Superior’ position to ensure that the base and the polarizer are in alignment with each other after the cut. The anterior lamellar cut was performed using microkeratome. The lenticule was placed back in the same position as marked to mimic the alignment. The tissue was further rotated by 45° ensuring that the base of the cornea and the polarizer were in alignment. The polarization power and ‘crosses’ were identified at each step. The average of forty corneas from pre-cut to post-45° angular change showed statistically significant difference (p < 0.05) in terms of polarizing power. The cross-shaped pattern deformed and lost the sharpness towards 45° angle. However, multiple variances in terms of ‘cross-patterns’ were observed throughout the study. Lumaxis^® was able to determine the worst quality tissue in terms of polarization (no black zone and crosses). Despite the quality of cross pattern which can be used as an additional objective parameter to evaluate the optical properties of the corneal tissue, this preliminary study needs to be further justified in terms of clinical relevance whether polarization changes with oriented or de-oriented grafts have any effects and consequences on the visual acuity.     

Where Did Information Go? Reflections on the Logical Status of Information in a Cybernetic and Semiotic Perspective

This article explores the usefulness of interdisciplinarity as method of enquiry by proposing an investigation of the concept of information in the light of semiotics. This is because, as Kull, Deacon, Emmeche, Hoffmeyer and Stjernfelt state, information is an implicitly semiotic term (Biological Theory 4(2):167–173, 2009: 169), but the logical relation between semiosis and information has not been sufficiently clarified yet. Across the history of cybernetics, the concept of information undergoes an uneven development; that is, information is an ‘objective’ entity in first order cybernetics, and becomes a ‘subjective’ entity in second order cybernetics. This contradiction relegates the status of information to that of a ‘true’ or ‘false’ formal logic problem. The present study proposes that a solution to this contradiction can be found in Deely’s reconfiguration of Peirce’s ‘object’ (as found in his triadic model of semiosis) into ‘thing’ and ‘object’ (Deely 1981). This ontology allows one to argue that information is neither ‘true’ nor ‘false’, and to suggest that, when considered in light of its workability, information can be both true and false, and as such it constitutes an organism’s purely objective reality (Deely 2009b). It is stated that in the process of building such a reality, information is ‘motivated’ by environmental, physiological, emotional (including past feelings and expectations) constraints which are, in turn, framed by observership. Information is therefore found in the irreducible cybersemiotic process that links at once all these conditions and that is simultaneously constrained by them. The integration of cybernetics’ and semiotics’ understanding of information shows that history is the analytical principle that grants scientific rigour to interdisciplinary investigations. As such, in any attempt to clarify its epistemological stance (e.g. the semiotic aspect of information), it is argued that biosemiotics does not need only to acknowledge semiotics (as it does), but also cybernetics in its interdisciplinary heritage.     

Towards biological applications of nanophotonic tweezers

Optical trapping (synonymous with optical tweezers) has become a core biophysical technique widely used for interrogating fundamental biological processes on size scales ranging from the single-molecule to the cellular level. Recent advances in nanotechnology have led to the development of ‘nanophotonic tweezers,’ an exciting new class of ‘on-chip’ optical traps. Here, we describe how nanophotonic tweezers are making optical trap technology more broadly accessible and bringing unique biosensing and manipulation capabilities to biological applications of optical trapping.     

Experimental attempts for the study of the origin of optical activity on earth

Optical activity of natural compounds is a characteristic of our living world which is based on the asymmetry of the molecular set-up. It is hard to realize a biological cell which would be constructed from racemic compounds alone. Yet it seems attractive to ask why nature preferred onlyone of two possible enantiomers, e.g. the L-amino-acids and D-sugars. Was there or is there a chance for an antipodic biosphere constructed on the basis of the ‘unnatural’ enantiomers like D-amino-acids and L-sugars on Earth or elsewhere?-The paper presents in its first part a review about hypotheses that would be able to explain the apparent discrepancy between the expectation from laboratory experience and the observation that biological matter consists of extremely asymmetric molecules. The speculations found in literature are divided mainly into two categories: The first one interprets the appearance of optical activity by a chance process and its amplification by suitable means, the second one postulates a cogency leading to the chirality of the biosphere observed today. The discovery of the non-conservation of parity in nuclear physics stimulated a search for related ‘asymmetry effects’ in chemistry. Experiments were undertaken by some workers to construct possible laboratory models for the evolution of optical activity, but many of them failed due to different causes. On the other hand a number of papers has been published that were not directed specifically to the problem discussed, but could be interpreted on the basis of the various hypotheses. It is particularly interesting in this context to look into papers describing the crystallisation of racemates from solutions, that were published as early as 70 yr ago. —In its second part the paper deals with the study of the polymerization of racemic amino-acids as a model that would possibly allow a decision between the hypotheses for the origin of optical activity, — mere chance or a physical driving force determining the chirality of evolution. Since great care was taken to eliminate all sources of systematical errors, one expected-form the classical standpoint-racemic poly-peptides of absolute zero optical activity. — The monomer amino-acids (α-alanine, α-amino-butyric acid, and lysine) were racemized before the polymerization in order to guarantee ‘ideally racemic’ substrates. Polymerization was achieved via the N-carboxyanhydrides of the amino-acids. Reaction vessels and measuring cells were thoroughly cleaned with boiling chromic sulfuric acid and kept sealed from the laboratory atmosphere to prevent any contamination. The optical activity was determined in a Cary 60 spectropolarimeter calibrated to detect angles of rotations in the range of 0.5 mdeg with a maximum error of ±50%. All the poly-amino-acids investigated showed negative angles of rotation at 310 nm between 0.25 and 0.84 mdeg that would correspond to an hypothetical asymmetry effect-i.e. the relative difference of the polymerization constants of L-and D-amino-acids-in the order of 8×10^?6. We believe that this result emphasises the existence of a physical force that enables a slight accumulation of the L-amino-acids within the high molecular weight polymers in excess to the D-amino-acids and could be of significance for the evolution of the biomass. At this point the experiments do not allow any conclusion about the nature of the observed ‘asymmetry effect’.     

Different games of moral bioenhancement

Raki? has serious misgivings about Wiseman's inability to frame ethical issues in the context of transcending existing realities (the ‘is’) with the aim of achieving what we believe is morally right (the ‘ought’). This inability to think beyond the present is misguided in ethics. He also criticizes Wiseman for making the unimaginative and unsubstantiated assumption that moral bioenhancement (MBE) technologies have reached their zenith already. Raki? argues that MBE will become more effective in the time to come, that it ought to be optional for every free individual, and that it should be directed at enhancing our motivation to act in line with how we believe we ought to act. He concedes however that the enhancement of our motivation to act morally can only be effective in a limited number of morally unambiguous cases. In response, Wiseman argues that Raki?'s reflections epitomize a way of articulating MBE that is unhelpful, misguidedly optimistic, and missing the most important things needing discussion. Such reflections are based on inappropriate metaphors, a too future‐oriented view detached from basic realities, and a false sense of what is possible on the global level should MBE be applied. Such ways of thinking about MBE are misguided from the outset, and indicative of the enthusiasm for a discourse in need of realignment. This should take the form of a more modest, synergistic outlook acutely aware of the inexorable limitations imposed on MBE by the internal complexity of moral goods, human agents, and the contexts in which moral action occurs.     

Rethinking the ‘everyday’ in ‘ethnicity and everyday life’

While ‘ethnicity and everyday life’ is a familiar collocation, sociologists concerned with racism and ethnicity have not engaged very much with the extensive body of social theory that takes the ‘everyday’ as its central problematic. In this essay, I consider some of the ways in which the sociology of the everyday might be of use to those concerned with investigating ethnicity and racism. For its part, however, the sociology of the everyday has tended to be remarkably blind to the role played by racism and racialization in the modern world. It is thus no less crucial to consider how the experiences of racialized groups might help us rethink influential accounts of the everyday. To this end, I provide a discussion of pioneering texts by C. L. R. James and W. E. B. du Bois, both of whom were driven by their reflections on racism and resistance to recognize the everyday not as an unremarked context, but as, precisely, a problematic one.     

Apoprotein heterogeneity increases spectral disorder and a step-wise modification of the B850 fluorescence peak position

It has already been established that the quaternary structure of the main light-harvesting complex (LH2) from the photosynthetic bacterium Rhodopseudomonas palustris is a nonameric ‘ring’ of PucAB heterodimers and under low-light culturing conditions an increased diversity of PucB synthesis occurs. In this work, single molecule fluorescence emission studies show that different classes of LH2 ‘rings’ are present in “low-light” adapted cells and that an unknown chaperon process creates multiple sub-types of ‘rings’ with more conformational sub-states and configurations. This increase in spectral disorder significantly augments the cross-section for photon absorption and subsequent energy flow to the reaction centre trap when photon availability is a limiting factor. This work highlights yet another variant used by phototrophs to gather energy for cellular development.