scholarly journals Comparative Analyses of the Self-Sealing Mechanisms in Leaves of Delosperma cooperi and Delosperma ecklonis (Aizoaceae)

2020 ◽  
Vol 21 (16) ◽  
pp. 5768
Author(s):  
Linnea Hesse ◽  
Tim Kampowski ◽  
Jochen Leupold ◽  
Sandra Caliaro ◽  
Thomas Speck ◽  
...  
Keyword(s):  
South Africa ◽  
Leaf Morphology ◽  
The Self ◽  
Ecological Niches ◽  
Vascular Strand ◽  
Closely Related Species ◽  
Oceanic Climate ◽  
The Absolute ◽  
The Given ◽  
Semi Arid

Within the Aizoaceae, the genus Delosperma exhibits a vast diversification colonizing various ecological niches in South-Africa and showing evolutionary adaptations to dry habitats that might include rapid self-sealing. Leaves of Delosperma react to external damage by the bending or contraction of the entire leaf until wound edges are brought into contact. A study of leaf morphology and anatomy, biomechanics of entire leaves and individual tissues and self-sealing kinematics after a ring incision under low and high relative humidity (RH) was carried out comparing the closely related species Delosperma cooperi and Delosperma ecklonis, which are indigenous to semi-arid highlands and regions with an oceanic climate, respectively. For both species, the absolute contractions of the examined leaf segments (“apex”, “incision”, “base”) were more pronounced at low RH levels. Independent of the given RH level, the absolute contractions within the incision region of D. cooperi were significantly higher than in all other segments of this species and of D. ecklonis. The more pronounced contraction of D. cooperi leaves was linked mainly to the elastic properties of the central vascular strand, which is approximately twice as flexible as that of D. ecklonis leaves.

Patients’ Perceptions of Caring and Uncaring Nursing Encounters in Inpatient Rehabilitation Settings

2019 ◽  
Vol 21 (2) ◽  
Author(s):  
Joan C Cheruiyot ◽  
Petra Brysiewicz
Keyword(s):  
South Africa ◽  
Content Analysis ◽  
Inpatient Rehabilitation ◽  
Structured Interview ◽  
The Self ◽  
Personal Relationships ◽  
Individual Interviews ◽  
Textual Data ◽  
Interview Guide ◽  
Being There

This study explores and describes caring and uncaring nursing encounters from the perspective of the patients admitted to inpatient rehabilitation settings in South Africa. The researchers used an exploratory descriptive design. A semi-structured interview guide was used to collect data through individual interviews with 17 rehabilitation patients. Content analysis allowed for the analysis of textual data. Five categories of nursing encounters emerged from the analysis: noticing and acting, and being there for you emerged as categories of caring nursing encounters, and being ignored, being a burden, and deliberate punishment emerged as categories of uncaring nursing encounters. Caring nursing encounters make patients feel important and that they are not alone in the rehabilitation journey, while uncaring nursing encounters makes the patients feel unimportant and troublesome to the nurses. Caring nursing encounters give nurses an opportunity to notice and acknowledge the existence of vulnerability in the patients and encourage them to be present at that moment, leading to empowerment. Uncaring nursing encounters result in patients feeling devalued and depersonalised, leading to discouragement. It is recommended that nurses strive to develop personal relationships that promote successful nursing encounters. Further, nurses must strive to minimise the patients’ feelings of guilt and suffering, and to make use of tools, for example the self-perceived scale, to measure this. Nurses must also perform role plays on how to handle difficult patients such as confused, demanding and rude patients in the rehabilitation settings.

scholarly journals “Incompleteness” and the Quest for Multiple Identities in South Africa

2015 ◽  
Vol 50 (3) ◽  
pp. 81-107 ◽  
Author(s):  
Bernard C. Lategan
Keyword(s):  
South Africa ◽  
Cultural Diversity ◽  
Identity Formation ◽  
Social Cohesion ◽  
Historical Memory ◽  
Multiple Identities ◽  
The Self ◽  
Important Goal ◽  
Alternative Approach

The article explores the contours of multiple identities in contrast to singular identities in situations of social complexity and cultural diversity. Nyamnjoh's concepts of “incompleteness” and “frontier Africans” imply an alternative approach to identity formation. Although the formation of one's own, singular identity is a necessary stage in the development of each individual, it has specific limitations. This is especially true in situations of complexity and diversity and where the achievement of social cohesion is an important goal. With reference to existing theories of identity formation, an alternative framework is proposed that is more appropriate for the dynamic, open-ended nature of identity and better suited to encourage the enrichment of identity. The role of imagination, a strategy for crossing borders (with reference to Clingman's concept of a “grammar of identity”), the search for commonality, and the effect of historical memory are discussed. Enriched and multiple identities are not achieved by replacement or exchange, but by widening (existing) singular identities into a more inclusive and diverse understanding of the self.

The Compounding and Application Mechanism of Polycarboxylate-Based Superplasticizers in the Self-Compacting Concrete

2011 ◽  
Vol 250-253 ◽  
pp. 711-717 ◽  
Author(s):  
Miao Miao Gui ◽  
Yun Hui Fang ◽  
Zi Dong Lan ◽  
Fei Yu Yu ◽  
Tian Xing Lin ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
Graft Copolymerization ◽  
Raw Materials ◽  
The Self ◽  
Main Mechanism ◽  
Self Compacting Concrete ◽  
The Given ◽  
Copolymerization Reaction

Polycarboxylate-based superplasticizers are synthesized by radical graft copolymerization reaction, and the products are divided into ester series (PC-1) and ether series (PC-2) on the basis of different big monomers. This article studies on influence of the different composition and dosages of the synthetic superplasticizers in the self-compacting concrete (SCC). The results show that the requirements of SCC workability can be achieved through simple adjustment kinds and dosages of the synthetic superplasticizers under the given mix proportions and the raw materials. And the main mechanism of the polycarboxylate-based superplasticizers is steric hindrance effect.

Barth and Buddhism in the theology of Katsume Takizawa

2011 ◽  
Vol 64 (2) ◽  
pp. 195-210
Author(s):  
John Parratt
Keyword(s):  
Twentieth Century ◽  
The Self ◽  
Self Identity ◽  
Basic Relationship ◽  
The Absolute ◽  
The Relationship

AbstractKatsume Takizawa (1909–1984) was one of the most innovative of twentieth-century Japanese philosophical theologians. His study with Barth (1935) led him to attempt to bring together aspects of Barth's theology with concepts derived from Jodo-shin and Zen. He found in both religions a basic relationship between God and man which transcended both identity and distinction, which he expressed in Nishida's concept of the self-identity of the absolute contradiction. This relationship he called ‘Emmanuel 1’. The fulfilment of the relationship is ‘Emmanuel 2’ and is reflected for Christians in Jesus.

Let the Witness Speak: From Archi-writing to the Community to come

Derrida Today ◽  
2009 ◽  
Vol 2 (2) ◽  
pp. 260-270
Author(s):  
Francesco Vitale
Keyword(s):  
The Self ◽  
The Other ◽  
Political Tradition ◽  
Metaphysics Of Presence ◽  
The Absolute ◽  
To Come ◽  
The One ◽  
The Sacrifice

The paper aims to present a reading of the question of Testimony rising in Derrida's later works (from Faith and Knowledge to Poetics and Politics of Witnessing): the experience of Testimony as the irreducible condition of the relation to the Other, of every possible link among living human singularities and, thus, of the thinking of a community to come. This thinking is able to divert the community from the economy grounding and structuring it within our political tradition governed by the metaphysics of presence, which demands the sacrifice of the Other in its multiple theoretical and practical forms. We intend to read this proposal and to point out its rich perspectives by bringing it into the articulation of an ethical-political archi-writing. So we suggest going back to Derrida's early analyses of phenomenology and to De la grammatologie in order to present a reading of archi-writing as the irreducible condition of the relation to otherness and, thus, of the experience through which a living human singularity constitutes itself, a singularity different from the one our tradition compels us to think of within the pattern of the absolute presence to the self, free from the relation to the other.

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