Time Zone Operations in Polish Airports as an Element of Transport System

2019 ◽  
pp. 46-55
Author(s):  
Dariusz Tłoczyński
Keyword(s):  
Transport System ◽  
Time Zone

On the structural organization of biological pumps and channels

1984 ◽  
Vol 42 ◽  
pp. 138-141
Author(s):  
G. Zampighi ◽  
M. Kreman
Keyword(s):  
Active Transport ◽  
Transport System ◽  
Plasma Membranes ◽  
Transport Proteins ◽  
Molecular Organization ◽  
Passive Transport ◽  
Concentration Gradients ◽  
Cell Functions ◽  
Natural Concentration ◽  
Active Transport System

The plasma membranes of most animal cells contain transport proteins which function to provide passageways for the transported species across essentially impermeable lipid bilayers. The channel is a passive transport system which allows the movement of ions and low molecular weight molecules along their concentration gradients. The pump is an active transport system and can translocate cations against their natural concentration gradients. The actions and interplay of these two kinds of transport proteins control crucial cell functions such as active transport, excitability and cell communication. In this paper, we will describe and compare several features of the molecular organization of pumps and channels. As an example of an active transport system, we will discuss the structure of the sodium and potassium ion-activated triphosphatase [(Na+ +K+)-ATPase] and as an example of a passive transport system, the communicating channel of gap junctions and lens junctions.

Placental uric acid transport system and its impact on fetal development

2018 ◽  
Author(s):  
B Lüscher ◽  
D Surbek ◽  
P Schneider ◽  
M Baumann
Keyword(s):  
Uric Acid ◽  
Transport System ◽  
Fetal Development ◽  
Acid Transport

Study-work-life balance of international students in the context of temporal boundaries

2019 ◽  
Vol 7 (2) ◽  
pp. 63-79
Author(s):  
Megan O'Mahony ◽  
Debora Jeske
Keyword(s):  
International Students ◽  
Social Withdrawal ◽  
Work Life ◽  
Work Life Balance ◽  
Boundary Management ◽  
Structured Interviews ◽  
Time Zone ◽  
Life Balance ◽  
Postgraduate Students ◽  
Personal Challenges

The goal of this qualitative study was to examine the experience of study-work-life balance among international students who were separated from their family both geographically and temporally. Using 10 semi-structured interviews with postgraduate students and thematic analysis, several themes were identified. These included boundary management shifts due to study/work demands and time zone differences. In addition, students reported social and personal challenges (in terms of family’s expectations, relationships maintenance, socialization in host country). Temporal boundaries contributed to social withdrawal and isolation among students, many of which were heavily reliant on their own family network for support. The findings strengthen the argument that time difference impacts the boundary management and social experience of international students.

NUMERICAL INVESTIGATIONS AND PERFORMANCE EVALUATION OF A FOLDED TUBE HEAT TRANSPORT SYSTEM UNDER BOILING CONDITIONS

2018 ◽  
Vol 30 (4) ◽  
pp. 267-291
Author(s):  
Mukesh Kumar ◽  
Avinash Moharana ◽  
Raj K. Singh ◽  
Arun K. Nayak ◽  
Jyeshtharaj B. Joshi
Keyword(s):  
Performance Evaluation ◽  
Heat Transport ◽  
Transport System ◽  
Numerical Investigations ◽  
And Performance
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