scholarly journals STUDENT RESEARCH: ACQUIRING KNOWLEDGE ABOUT THE NATURE AND PROCESS OF SCIENCE

2017 ◽  
Vol 16 (6) ◽  
pp. 832-835
Author(s):  
Todar Lakhvich

In April of 2017, I was working with the team of FEBS (Federation of European Biochemical Societies) Education Ambassadors from different European countries and Education Committee members in Université Paris Descartes. This was a significant event, involving FEBS Constituent Societies, to create a platform at the Europen level to brainstorm on educational issues across Europe. The discussions focused on what would be done in order to meet the mission and vision of FEBS on educational issues ̶ to promote education throughout Europe. Along with the other very important issues (curriculum, inventory of key skills, good practice, etc.) the working group on learning resources has elaborated short and long term objectives to formation of an appropriate learning database in the field of Biochemistry and Molecular Biology education. The participants discussed a lot about the importance of inquiry based approach which includes in particular the conduction, evaluation and presentation of Student Research.

Author(s):  
David Granlund

AbstractThis paper studies responses to competition with the use of dynamic models that distinguish between short- and long-term price effects. The dynamic models also allow lagged numbers of competitors to become valid and strong instruments for the current numbers, which enables studying the causal effects using flexible specifications. A first parallel trader is found to decrease prices of exchangeable products by 7% in the long term. On the other hand, prices do not respond to the first competitor that sells therapeutic alternatives; but competition from four or more competitors that sell on-patent therapeutic alternatives decreases prices by about 10% in the long term.


Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 305
Author(s):  
Kathryn Nankervis ◽  
Carolyne Tranquille ◽  
Persephone McCrae ◽  
Jessica York ◽  
Morgan Lashley ◽  
...  

Water treadmill exercise has become popular in recent years for the training and rehabilitation of equine athletes. In 2019, an equine hydrotherapy working group was formed to establish what was commonly considered to be best practice in the use of the modality. This article describes the process by which general guidelines for the application of water treadmill exercise in training and rehabilitation programmes were produced by the working group. The guidelines describe the consensus reached to date on (1) the potential benefits of water treadmill exercise, (2) general good practice in water treadmill exercise, (3) introduction of horses to the exercise, (4) factors influencing selection of belt speed, water depth and duration of exercise, and (5) monitoring movement on the water treadmill. The long-term goal is to reach a consensus on the optimal use of the modality within a training or rehabilitation programme. Collaboration between clinicians, researchers and experienced users is needed to develop research programmes and further guidelines regarding the most appropriate application of the modality for specific veterinary conditions.


1981 ◽  
Vol 4 (5) ◽  
pp. 218-222 ◽  
Author(s):  
M. Berrettini ◽  
U. Buoncristiani ◽  
P. Parise ◽  
E. Ballatori ◽  
G.G. Nenci

The short- and long-term effect of hemodialysis with two different membranes — cuprophan and polyacrilonytrile — on platelet aggregation has been investigated in 12 uremic patients undergoing extracorporeal dialysis, passing from one treatment to the other. Cuprophan membranes failed to correct the defective platelet aggregation of uremia, and their thrombogenicity was documented by a fall in platelet count and further impairment of platelet aggregation during dialysis. On the contrary, polyacrilonitryle membranes showed the capacity to correct completely but transiently the platelet aggregation, without changes in platelet count. The results indicate that polyacrilonytrile membranes show a better biocompatibility toward platelets than cuprophan membranes.


2002 ◽  
Vol 29 (12) ◽  
pp. 1465 ◽  
Author(s):  
Edwin Kraus ◽  
Margje Voeten ◽  
Hans Lambers

Autotoxicity and allelopathy affect the respiration and yield of GL66 and GL72, two populations of perennial ryegrass (Lolium perenne L. cv. S23) that were originally selected for contrasting rates of mature-leaf dark respiration under conditions where allelopathic effects could not occur and autotoxic effects were minimal. The aim of this study was to further investigate growth and biomass allocation of these two populations in relation to their autotoxic and allelopathic properties. To this end, plants were subjected to two conditions (monoculture and mixed culture) and two treatments (growth in 'renewed' and 'replenished' nutrient solution, allowing for short- and long-term accumulation of allelochemicals, respectively). The fast-respiring population, GL66, showed a reduced total yield due to allelopathic effects only when long-term accumulation of allelochemicals was allowed (mixed culture, replenished). However, short-term accumulation (mixed culture, renewed) of allelochemicals was sufficient to affect allocation of biomass to leaf sheaths. The slow-respiring population, GL72, suffered from autotoxicity only when long-term accumulation was allowed (monoculture, replenished), and from allelopathy under both short- and long-term accumulation (mixed culture, either renewed or replenished). The predominant allelopathic and autotoxic effect was on dry matter percentage and dry weight of leaf sheaths. We conclude that the roots of both populations release one or more chemical compounds that primarily affect biomass allocation to leaf sheaths, both of the same and of the other population. Sensitivity to the putative inhibitor(s) released by the other population was greater than sensitivity to the inhibitor(s) released by a population's own roots.


2016 ◽  
Vol 6 (1) ◽  
pp. 314-318
Author(s):  
David Starr-Glass

A sense of strangerhood, which is different from social isolation or cultural alienation, is common among many of the international students whom I encounter. In a world increasingly preoccupied with personal interaction and social exchange, many of these students perceive strangerhood as problematic and inherently negative. This brief reflection considers strangerhood from the perspective of Georg Simmel and argues that being a stranger has considerable positive value. Recognition of strangerhood is a critical element in developing a greater understanding of both the self and the Other. Legitimizing the experience of strangerhood, emphasizing its potential value, and empowering students to embrace it may provide significant short- and long-term benefits for international students in their personal and transformative journeys.


2014 ◽  
Vol 67 (1) ◽  
Author(s):  
Nik Mohd Rahimi ◽  
Zahriah Hussin ◽  
Wan Normeza

Many Arabic language books use semantic clustering in presenting their vocabularies. However, some language experts suggest the use of semantically unrelated clustering due to a higher contribution in memorizing vocabularies among students. This study aims to investigate on which clustering has a higher contribution in memorizing vocabularies among students. The specific objectives of this study are; (a) to identify the level of students’ achievement in memorizing vocabularies using both techniques in a long-term test and a short-term test; and (b) to identify students’ achievement differences using both techniques in both tests. This study is a quasi-experimental study which using a short term and a long term post-test. This group of students was exposed to vocabularies using semantic clustering and semantically unrelated clustering. The short term post test was administered after the students were exposed with both techniques, while the long term post-test was used after seven days of the exposure. This study found that students’ achievement using semantic clustering was moderate for both tests. Meanwhile, students’ achievement using semantically unrelated clustering was very good in the short term test and good in the long term test. On the other hand, the t-test analysis showed that there are significant differences between both techniques, which students’ achievement using semantically unrelated clustering is statistically and significantly higher than students’ achievement using semantic clustering for both short and long term post-tests. Therefore, this study suggests that the semantically unrelated clustering technique needs to be used in learning Arabic vocabularies among students. 


2015 ◽  
Vol 38 (4) ◽  
pp. 83-101
Author(s):  
Vladimiras Gražulis

In recent decades teamwork has become not only a  popular topic for public discussion, but also the focus of numerous scientific insights. The abundance of publications on this subject suggests that organizing teamwork has become one of the phenomena of organi‑ zational activity. On the other hand, based on his numerous research, the author of the paper raises the question of whether the concept of teamwork analysed in such publications is studied within the framework of scientific concepts. For instance, some authors believe that the only distinguishing feature of a team is an efficiently working group; the formation of the team is a long‑term process and to achieve this the group needs to undergo several stages of development (Hersey, Blanchard, Tuckman, Jensen, Katzenbach, Smith, Liker, Kasiulis, Barvydienė, Savanavičienė, Šilingienė, Gražulis); other authors use these concepts as synonyms (Boddy, Peiton) and analyse them in the context of formal and informal sta‑ tus. Thus, the concept of effective and ineffective teams has become the additional object of the research. Numerous researchers limit their research to the analysis of functional roles within well‑established teams (Benne, Sheats), at the same time neglecting the impact of personality traits on the activity of the work group. Specialists do not agree on the team size (Manz, Sims, Miller, Stoner et. al.), purpose (Meskon, Katzenbach, Smith, Sakalas et. al.), and periodically arising constraints on the team development and the like. As a result, scholars and practitioners perceive the issues of team work differently, thus they often talk at cross purposes. The author of the paper believes that it is expedient to consider the information collected up to now on the topic of teamwork within the overall context of the development of management science, which at the same time would provide for the development of conceptual theoretical proposals for scientific teamwork models (systems).


Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 5197-5197
Author(s):  
Philippe R.G. Henon ◽  
Hanna Sovalat ◽  
Mario Ojeda-Uribe ◽  
Yazid Arkam ◽  
Jean-Claude Eisenmann

Abstract We previously suggested that a reinfused threshold dose of CD34+38− cells = 5x104/kg b.w. better predict both short- and long-term engraftment after PBSCT than total CD34+ cells assessment, and should thus avoid unecessary postransplant (Tx) G-CSF administration. Therefore, we have further conducted a prospective study comparing postTx data from cancer patients undergoing autologous PBSCT and were administered or not G-CSF depending on the amount of CD34+38− cells reinfused. 48 patients (mean age 49y) were transplanted with, on average 2.5x104 CD34+38− cells/kg b.w. (range 1–49) and were consequently administered G-CSF 5 μg/kg daily from d5 to ANC = 109/1 (Group-I). 46 patients (mean age 50y) received an average of 20.5x104 CD34+38− cells/kg (range 5.5–162) without postTx G-CSF (Group-II). These 2 groups were compared and paired two by two with 2 groups of "historical" patients referred as controls : 11 patients (mean age 44y) had received, on average, 2.5x104 CD34+38− cells/kg b.w. (range 1.1–4.8) without G-CSF (Group-III); 29 patients (mean age 51y) received an average of 15.2x5x104 CD34+38− cells/kg b.w. (range 5.5–60) systematically associated with G-CSF for protocolar reasons (Group-IV). PostTx trilineage hematopoietic engraftment (up to 2 years), clinical and economical parameters were systematically recorded for each group of patients and statistically compared. PostTx ANC recovery occurred sooner, was faster and reached higher levels in the G-CSF groups (II and IV) compared to the others; platelets recovery kinetics was significantly faster in Group-III compared to the others; reticulocytic recovery was not statistically different whichever the group. When age, sex, disease, TBI did not significantly influence trilineage engraftment, a multiparametric study showed strong positive impacts of total CD34+ cells reinfused on ANC kinetics and of CD38− subset amounts on platelet kinetics, which was on the contrary slowered by G-CSF administration. Group-I patients received more transfusions, stayed longer hospitalized and costed more than those of the 3 other groups. Regarding long-term hematopoiesis, platelets and hemoglobin levels were globally higher in Group-III compared to the other groups, but still more dramatically compared to Group-IV from 1 to 9 months, which might be explained by differences in BM CD34+ and 38− subset differentiation. In conclusion, if postTx G-CSF certainly accelerates ANC recovery, it seems to be to the detriment of short- an d median-term platelets and hemoglobin recovery, even in case of reinjection of CD34+38− cell doses = 5x104/kg b.w., which appears thus to be significantly discriminant for G-CSF administration decision.


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