Toward a more reflective teaching practice: Revisiting excellence in teaching

Excellence in teaching has always been a demanding and absorbing concern in institutions of higher learning. Earlier studies, which are numerous, have often dealt with the measurement of teacher qualities but have largely failed to explain the phenomenon of excellence in practice. This study focused on the outstanding professional teachers’ candid revelations of their subjective experiences of becoming and being excellent in their craft. Findings of the study indicated that love is the touchstone of excellence in teaching: that is, loving the students, loving knowledge and loving the teaching process.     

Fluid and electrolyte balance in elite male football (soccer) players training in a cool environment

There are few data in the published literature on sweat loss and drinking behaviour in athletes training in a cool environment. Sweat loss and fluid intake were measured in 17 first-team members of an elite soccer team training for 90 min in a cool (5°C, 81% relative humidity) environment. Sweat loss was assessed from the change in body mass after correction for the volume of fluid consumed. Sweat electrolyte content was measured from absorbent patches applied at four skin sites. Mean (?± s) sweat loss during training was 1.69?±?0.45 l (range 1.06?-?2.65 l). Mean fluid intake during training was 423?±?215 ml (44?-?951 ml). There was no apparent relationship between the amount of sweat lost and the volume of fluid consumed during training (r ² = 0.013, P = 0.665). Mean sweat sodium concentration was 42.5?±?13.0 mmol?·?l^?1 and mean sweat potassium concentration was 4.2?±?1.0 mmol?·?l^?1. Total salt (NaCl) loss during training was 4.3?±?1.8 g. The sweat loss data are similar to those recorded in elite players undergoing a similar training session in warm environments, but the volume of fluid ingested is less.     

Curative role of pantothenic acid in brain damage of gamma irradiated rats

Radiation induced brain damage is associated with impairment of mitochondrial functions, variations in the level of neurotransmitters, and oxidative stress. Mitochondrial function is closely linked to the level of neurotransmitters since the precursors are supplied by the Kreb’s cycle intermediates. The objective of this study was to evaluate the influence of pantothenic acid, an essential component in the synthesis of Coenzyme A (CoA), on the activity of the Krebs cycle enzymes, isocitrate dehydrogenase (IDH), α-ketoglutarate dehydrogenase (α-KGDH), and succinate dehydrogenase (SDH); the level of aspartic, glutamic and GABA; the activity of transaminases, and oxidative stress, in the cerebrum of γ-irradiated rats. Pantothenic acid (26 mg/Kg) was orally administered to the rats, 2 h after irradiation and during the following 5 days. Animals were sacrificed the 7th day post-irradiation. The exposure of male albino rats to γ-rays (5 Gy) has triggered oxidative stress notified by a significant elevation in the level of malondialdehyde (MDA), an end product of lipid peroxidation, associated to a significant decrease in the content of phospholipids, and the antioxidant compound glutathione (GSH). The activity of IDH, α-KGDH, and SDH, has significantly decreased, while the level of aspartic, glutamic and GABA has significantly increased. In parallel to these changes, the activity of alanine and aspartate transaminase has significantly increased, compared to their values in the control rats. Pantothenic acid treatment, has significantly attenuated oxidative stress; enhanced the activity of IDH, α-KGDH, and SDH; minimized the increase in the level of amino acids and the activity of transaminases, compared to their values in the cerebrum of irradiated rats. In conclusion, pantothenic acid could improve the level of neurotransmitters amino acids, which depends on the enzymatic activities of Krebs cycle and linked to oxidative stress.     

Timing is everything: the demarcation of 'later' abortions in Scotland

Feminist STS analyses of contemporary reproductive medicine have illustrated the proliferation of practices that position fetuses as individual subjects, and have highlighted the major implications of such practices for pregnant women. In an attempt to challenge medicine's claims to 'know' the fetus, this body of literature has also demonstrated the renegotiable basis of pregnant/fetal subjectivity, using detailed empirical analyses of the practices through which particular pregnant and fetal subjects emerge in particular contexts. In this paper I contribute to this endeavour utilizing an empirical case study of an important, but neglected aspect of reproductive healthcare: the demarcation of temporal thresholds on abortion provision in the absence of diagnosed fetal abnormality. Drawing on semi-structured interviews with Scottish health professionals, I explore the discursive practices through which they demarcate 'later' abortion as a problematic decision. I argue that such practices are intimately dependent on particular co-constructions of temporality and pregnant/fetal subjectivity, and support this argument with reference to the counter-representations of the gestational timing of abortion that emerge from a minority of health professionals' accounts. I suggest that, collectively, this body of data illustrates the opportunities that (re)presenting temporality would afford those engaged in attempts to foster the construction of less oppressive pregnant/fetal subjectivities. My broader aim is to illustrate the insights that feminist theorizations of pregnant/fetal subjectivity gain from explicit engagement with another important theme of contemporary STS scholarship, namely, the constitutive role played by representations of temporality in technoscientific innovation and practice.