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Wyszukujesz frazę "yellow phase" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Driver performance through the yellow phase using video cameras at urban signalized intersections
Autorzy:
Al-Mistarehi, Bara’ W.
Alomari, Ahmad H.
Obaidat, Mohammed T.
Al-Jammal, Areen A.
Powiązania:
https://bibliotekanauki.pl/articles/2203849.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
driver behavior
signalized intersections
red light running
yellow phase
zachowanie kierowcy
skrzyżowanie z sygnalizacją
przejazd na czerwonym świetle
żółta faza
Opis:
The main objective of this research is to examine the influencing parameters of driver performance through the yellow phase at urban signalized intersections with and without red-light running (RLR) cameras. Data were collected to include the intersection type, vehicle type, turning movement type, whether the vehicle position is in a platoon or not, presence of RLR cameras, green light flash devices, pedestrians, and pavement markings. A total of 2168 driver observations were extracted. Only 33.3% of the drivers stopped before the stop line, 59% of the drivers passed the intersection through the yellow phase, and 7% of the drivers committed RLR violations. The results showed that drivers were more likely to stop before the stop line through the yellow phase at locations with RLR cameras, green light flash devices, pavement markings, where pedestrians were present, and at a four-leg intersection. Chi-square tests indicated that all parameters had a significant impact on driver performance, except for the type of turning movement.
Źródło:
Transport Problems; 2021, 16, 1; 51--64
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Developmental expression and hormonal regulation of male-specific yellow protein mRNA in adults of the desert locust, Schistocerca gregaria
Autorzy:
Begum, M.
Rahman, M.M.
Huybrechts, R.
De Loof, A.
Powiązania:
https://bibliotekanauki.pl/articles/55232.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
Schistocerca gregaria
yellow protein
phase transition
juvenile hormone
polymorphism
body colour
adult
yellow colouration
insulin
male
sex determination
insect
hormonal regulation
sex hormone
desert locust
Opis:
Adult males of Schistocerca gregaria turn yellow when they become sexually mature. This is due to the deposition in the cuticle of a male-specific Yellow Protein (YP), of which the amino acid sequence is known. Yellowing only happens in crowd-reared (gregarious) males, and results from the deposition of a specific ‘Yellow Protein’. If individual males (solitarious) are isolated after the adult emergence, they become sexually mature but they do not turn yellow. On the basis of a partial YP-mRNA sequence, we established a reverse transcriptase polymerase chain reaction (RT-PCR) assay to study the developmental expression of YP in crowd-reared males, isolated-reared males and females. In crowd-reared adult males the transcription of YP gene started from day 5 on, and reached a maximum at day 12. The effects of juvenile hormone (JH), insulin (bovine), corazonin, ecdysone and 20 0H-ecdysone (20E) on the regulation of YP-mRNA synthesis were also investigated. JH made the cuticle turn yellow and, as shown by RT-PCR, YP-mRNA was induced. The effect of 100 μg JHIII was stronger than that of 10 μg. Insulin was only effective in inducing YP-mRNA synthesis at high dose (19 μg) and after more days (18 d). Corazonin and 20E made the cuticle turn black, but no YP-mRNA synthesis was observed. Ecdysone (10 and 100 μg) showed no effect on body coloration and YP-mRNA. Thus, JH was found to be the most potent inducer among the hormones tested.
Źródło:
Pestycydy; 2008, 1-2; 35-41
0208-8703
Pojawia się w:
Pestycydy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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