164 research outputs found
Literal and metaphorical usages of Babanki EAT and DRINK verbs
In Babanki, a Grassfields Bantu language of North-West Cameroon, two of the numerous consumption verbs, namely the generic verbs ʒɨ́ ‘eat’ and ɲʉ́ ‘drink’, constitute a major source of metaphorical extensions outside the domain of ingestion. Setting out from a characterisation of the basic meanings of these two lexical items as they emerge from their paradigmatic relations within the semantic field of alimentation processes, this paper explores the figurative usages of the two verbs and their underlying semantic motivations. Semantic extensions that radiate from eat can be subsumed under two closely related structural metaphors, i.e. APPROPRIATION OF RESOURCES IS EATING and WINNING IS EATING. The first metaphor construes the acquisition and exploitation of non-food items such as material possession as eating, while the second metaphor casts the acquisition of immaterial advantage in the mould of eating. Both metaphors have further entailments, i.e. the derivation of pleasure from consumption of resources, the depletion of resources via consumption and the deprivation of a third party from access to these resources. Semantic extensions that radiate from drink can be accounted for in two structural metaphors, i.e. INHALATION IS DRINKING and ABSORPTION IS DRINKING. Remarkably, some metaphorical extensions of consumption verbs attested in other African languages, such as extensions of EAT for sexual intercourse and for killing, and the extensions of DRINK for undergoing trouble and enduring painful experiences are absent in Babanki
The expression of diminutivity in Central Ring Grassfields Bantu
oai:hup1.journals.sub.uni-hamburg.de:article/203Studies on the expression of diminutivity in Bantoid languages of the Cameroonian Grassfields have tended to focus on the role that noun class derivation plays within the familiar Bantu paradigm. A closer look at individual branches of Bantoid, however, reveals a more complex picture, which rather suggests a division of labour between derivational strategies and compounding and/or periphrasis. This contribution zooms in on the languages of the Central Ring (CR) branch of Grassfields Bantu, presenting an overview of diminutivisation strategies found here: the notorious transfer to gender 19/6a, which is at times, accompanied by the addition of a semantically bleached suffix –CV, and periphrasis in associative constructions headed by nouns with inherent diminutive meanings such as ‘child’.
Государственно-частное партнерство - важнейший механизм реализации социальной политики в РФ (на примере Томской области)
В статье рассмотрено понятие государственно-частное партнерство (Г П) и обоснована актуальность применения данных механизмов на различных уровнях государственной власти. Особое внимание уделено целесообразности применения механизмов Г П в рамках реализации социальной политики в РФ, выявлены и проанализированы основополагающие преимущества и недостатки, как для частного инвестора, так и для публичного партнера. Доказана эффективность применения Г П в рамках проекта "Детские сады Томской области"
Thermorheology of living cells: impact of temperature variations on cell mechanics
Upon temperature changes, we observe a systematic shift of creep
compliance curves J (t) for single living breast epithelial cells. We use a
dual-beam laser trap (optical stretcher) to induce temperature jumps within
milliseconds, while simultaneously measuring the mechanical response of whole
cells to optical force. The cellular mechanical response was found to differ
between sudden temperature changes compared to slow, long-term changes
implying adaptation of cytoskeletal structure. Interpreting optically induced cell
deformation as a thermorheological experiment allows us to consistently explain
data on the basis of time–temperature superposition, well known from classical
polymer physics. Measured time shift factors give access to the activation
energy of the viscous flow of MCF-10A breast cells, which was determined
to be 80 kJ mol−1. The presented measurements highlight the fundamental
role that temperature plays for the deformability of cellular matter. We propose
thermorheology as a powerful concept to assess the inherent material properties
of living cells and to investigate cell regulatory responses upon environmental
changes
Complex thermorheology of living cells
Temperature has a reliable and nearly instantaneous influence onmechanical responses of cells.As recently
published, MCF-10Anormal epithelial breast cells follow the time–temperature superposition (TTS)
principle. Here,wemeasured thermorheological behaviour of eightcommoncell types within
physiologically relevant temperatures and appliedTTS to creep compliance curves.Our results showed that
superposition is not universal and was seen in four of the eight investigated cell types. For the other cell
types, transitions of thermorheological responses were observed at 36 °C.Activation energies (EA)were
calculated for all cell types and ranged between 50 and 150 kJmol−1.The scaling factors of the superposition
of creep curves were used to group the cell lines into three categories. They were dependent on relaxation
processes aswell as structural composition of the cells in response tomechanical load and temperature
increase.This study supports the view that temperature is a vital parameter for comparing cell rheological
data and should be precisely controlledwhen designing experiments
Thermal instability of cell nuclei
DNA is known to be a mechanically and thermally stable structure. In its double
stranded form it is densely packed within the cell nucleus and is thermo-resistant
up to 70 °C. In contrast, we found a sudden loss of cell nuclei integrity at
relatively moderate temperatures ranging from 45 to 55 °C. In our study, suspended
cells held in an optical double beam trap were heated under controlled
conditions while monitoring the nuclear shape. At specific critical temperatures,
an irreversible sudden shape transition of the nuclei was observed. These temperature
induced transitions differ in abundance and intensity for various normal
and cancerous epithelial breast cells, which clearly characterizes different cell
types. Our results show that temperatures slightly higher than physiological
conditions are able to induce instabilities of nuclear structures, eventually
leading to cell death. This is a surprising finding since recent thermorheological
cell studies have shown that cells have a lower viscosity and are thus more
deformable upon temperature increase. Since the nucleus is tightly coupled to
the outer cell shape via the cytoskeleton, the force propagation of nuclear
reshaping to the cell membrane was investigated in combination with the
application of cytoskeletal drugs
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