| Home | [1–10] << 11 12 13 14 15 16 17 18 19 20 >> [21–30] |
|
| Records | |||||
|---|---|---|---|---|---|
Author  |
Asher, A.; Shabtay, A.; Brosh, A.; Eitam, H.; Agmon, R.; Cohen-Zinder, M.; Zubidat, A.E.; Haim, A. | ||||
| Title | “Chrono-functional milk”: The difference between melatonin concentrations in night-milk versus day-milk under different night illumination conditions | Type | Journal Article | ||
| Year | 2015 | Publication | Chronobiology International | Abbreviated Journal | Chronobiol Int |
| Volume | 32 | Issue | 10 | Pages | 1409-1416 |
| Keywords | Animals; Heart rate; illumination; melatonin; night-milk; chronobiology | ||||
| Abstract | Pineal melatonin (MLT) is produced at highest levels during the night, under dark conditions. We evaluated differences in MLT-concentration by comparing daytime versus night time milk samples, from two dairy farms with different night illumination conditions: (1) natural dark (Dark-Night); (2) short wavelength Artificial Light at Night (ALAN, Night-Illuminated). Samples were collected from 14 Israeli Holstein cows from each commercial dairy farm at 04:30 h (“Night-milk”) 12:30 h (“Day-milk”) and analyzed for MLT-concentration. In order to study the effects of night illumination conditions on cows circadian rhythms, Heart Rate (HR) daily rhythms were recorded. MLT-concentrations of Night-milk samples from the dark-night group were significantly (p < 0.001) higher than those of Night-illuminated conditions (30.70 +/- 1.79 and 17.81 +/- 0.33 pg/ml, respectively). Interestingly, night illumination conditions also affected melatonin concentrations at daytime where under Dark-Night conditions values are significantly (p < 0.001) higher than Night-Illuminated conditions, (5.36 +/- 0.33 and 3.30 +/- 0.18 pg/ml, respectively). There were no significant differences between the two treatments in the milk yield and milk composition except somatic cell count (SCC), which was significantly lower (p = 0.02) in the Dark-Night group compared with the Night-Illuminated group. Cows in both groups presented a significant (p < 0.01) HR daily rhythm, therefore we assume that in the night illuminated cows feeding and milking time are the “time keeper”, while in the Dark-night cows, HR rhythms were entrained by the light/dark cycle. The higher MLT-concentration in Dark-night cows with the lower SCC values calls upon farmers to avoid exposure of cows to ALAN. Therefore, under Dark-night conditions milk quality will improve by lowering SCC values where separation between night and day of such milk can produce chrono-functional milk, naturally rich with MLT. | ||||
| Address | b Department of Evolutionary and Environmental Biology , Faculty of Natural Sciences, The Israeli Center for Interdisciplinary Research in Chronobiology, University of Haifa , Mount Carmel , Haifa , Israel | ||||
| Corporate Author | Thesis | ||||
| Publisher | Taylor & Francis | Place of Publication | Editor | ||
| Language | English | Summary Language | English | Original Title | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0742-0528 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:26588495 | Approved | no | ||
| Call Number | IDA @ john @ | Serial | 1312 | ||
| Permanent link to this record | |||||
| Author |
Ashfaq, M.; Khanam, S.; Khan, M.; Rasheed, F.; Hafeez, S. | ||||
| Title | Insect orientation to various color lights in the agricultural biomes of Faisalabad | Type | Journal Article | ||
| Year | 2005 | Publication | Pakistan Entomologist | Abbreviated Journal | Pak Entomol |
| Volume | 27 | Issue | 1 | Pages | 49-52 |
| Keywords | Animals; Insects; Faisalabad; Pakistan; Diptera; Coleoptera; Lepidoptera | ||||
| Abstract | This experiment was conducted in the area of Punjab Agriculture Research Station (PARS) and Chak No.33 JB Faisalabad to evaluate the response insects to varying wavelengths of light. During experiment, lights of six different colors (blue, green, yellow, red, black and white) were tested. All lights were arranged in a line on agriculture land, close to Faisalabad Airport. Tree rows/blocks, forest nursery, fruit garden, wheat, maize and fodder crops were the main vegetative covers in the vicinity. Each selected color light was properly projected on 1 m^2 vertical screen (made of white cotton fabric) placed one meter high above the ground. All lights were kept on simultaneously for half an hour and the insects attracted on both sides of the screens were collected in tubs containing soapy water. At the end of experiment, the collection was shifted to properly labeled storage bottles for counting and identification into respective orders. The highest number of insects was observed in container placed under black light (ultraviolet light), while the lowest in that of red light. Similarly, the common insect orders frequented among all color lights were Diptera, Coleoptera and Lepidoptera respectively. The experimental results indicated that insects are attracted in more number on lights with short wavelengths and high frequencies and vice a versa. |
||||
| Address | Department of Agri Entomology, University of Agriculture, Faisalabad, Pakistan | ||||
| Corporate Author | Thesis | ||||
| Publisher | Pakistan Entomological Society | Place of Publication | Editor | ||
| Language | English | Summary Language | English | Original Title | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1017-1827 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | IDA @ john @ | Serial | 1477 | ||
| Permanent link to this record | |||||
| Author |
Ashford, O.M. | ||||
| Title | A portable cloud searchlight | Type | Journal Article | ||
| Year | 1947 | Publication | Weather | Abbreviated Journal | |
| Volume | 2 | Issue | Pages | 103-104 | |
| Keywords | Remote Sensing | ||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | GFZ @ kyba @ | Serial | 2044 | ||
| Permanent link to this record | |||||
| Author |
Ashkenazi, I. E.; Reinberg, A,; Bicakova-Rocher, A.; Ticher, A. | ||||
| Title | The genetic background of individual variations of circadian-rhythm periods in healthy human adults. | Type | Journal Article | ||
| Year | 1993 | Publication | American Journal of Human Genetics | Abbreviated Journal | |
| Volume | 52 | Issue | 6 | Pages | 1250–1259 |
| Keywords | Human Health; Adult; Body Temperature; Bronchi; Bronchi: physiology; Circadian Rhythm; Circadian Rhythm: genetics; Female; Genetic Variation; Hand; Hand: physiology; Heart Rate; Humans; Male; Middle Aged; Sex Factors; Sleep | ||||
| Abstract | As a group phenomenon, human variables exhibit a rhythm with a period (tau) equal to 24 h. However, healthy human adults may differ from one another with regard to the persistence of the 24-h periods of a set of variables' rhythms within a given individual. Such an internal desynchronization (or individual circadian dyschronism) was documented during isolation experiments without time cues, both in the present study involving 78 male shift workers and in 20 males and 19 females living in a natural setting. Circadian rhythms of sleep-wake cycles, oral temperature, grip strength of both hands, and heart rate were recorded, and power-spectra analyses of individual time series of about 15 days were used to quantify the rhythm period of each variable. The period of the sleep-wake cycle seldom differed from 24 h, while rhythm periods of the other variables exhibited a trimodal distribution (tau = 24 h, tau > 24 h, tau < 24 h). Among the temperature rhythm periods which were either < 24 h or > 24 h, none was detected between 23.2 and 24 h or between 24 and 24.8 h. Furthermore, the deviations from the 24-h period were predominantly grouped in multiples of +/- 0.8 h. Similar results were obtained when the rhythm periods of hand grip strength were analyzed (for each hand separately). In addition, the distribution of grip strength rhythm periods of the left hand exhibited a gender-related difference. These results suggested the presence of genetically controlled variability. Consequently, the distribution pattern of the periods was analyzed to elucidate its compatibility with a genetic control consisting of either a two-allele system, a multiple-allele system, or a polygenic system. The analysis resulted in structuring a model which integrates the function of a constitutive (essential) gene which produces the exact 24-h period (the Dian domain) with a set of (inducible) polygenes, the alleles of which, contribute identical time entities to the period. The time entities which affected the rhythm periods of the variables examined were in the magnitude of +/- 0.8 h. Such an assembly of genes may create periods ranging from 20 to 28 h (the Circadian domain). The model was termed by us “The Dian-Circadian Model.” This model can also be used to explain the beat phenomena in biological rhythms, the presence of 7-d and 30-d periods, and interindividual differences in sensitivity of rhythm characteristics (phase shifts, synchronization, etc.) to external (and environmental) factors. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | LoNNe @ schroer @ | Serial | 582 | ||
| Permanent link to this record | |||||
| Author |
Assum, T.; Bjørnskau, T.; Fosser, S.; Sagberg, F. | ||||
| Title | Risk compensation--the case of road lighting | Type | Journal Article | ||
| Year | 1999 | Publication | Accident Analysis & Prevention | Abbreviated Journal | Accident Analysis & Prevention |
| Volume | 31 | Issue | 5 | Pages | 545-553 |
| Keywords | Lighting | ||||
| Abstract | The hypothesis of this article is that drivers will not adjust their behavior, i.e. drivers are not expected to increase their speed, reduce their concentration or travel more when road lighting is installed. The hypothesis was based on previous research showing that road lighting reduces road accidents and that average driving speeds do not increase when road lighting is installed. Our results show that drivers do compensate for road lighting in terms of increased speed and reduced concentration. Consequently, the hypothesis is rejected. This means that road lighting could have a somewhat larger accident-reducing effect, if compensation could be avoided. The fact that previous research has found no change in average speed when road lighting is introduced, seems to be explained by increased driving speeds by some drivers being counterbalanced by a larger proportion of more slowly driving groups of drivers (elderly people and women), i.e. different subgroups of road users compensate in different ways. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0001-4575 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | LoNNe @ kagoburian @ | Serial | 625 | ||
| Permanent link to this record | |||||