scholarly journals Taste sensitivity to phenylthiocarbamide found in South Sinai Bedouin tribes

2021 ◽  
Vol 45 (1) ◽  
pp. 25-30
Author(s):  
Anna Chumakova ◽  
Leonid Kalichman ◽  
Eugene Kobyliansky
Keyword(s):  
Allele Frequency ◽  
Genetic Drift ◽  
High Frequency ◽  
The Other ◽  
Taste Sensitivity ◽  
Healthy Male ◽  
Isolated Populations ◽  
South Sinai ◽  
Very High ◽  
Jewish Populations

The aim of this work was to study taste sensitivity to phenylthiocarbamide (PTC) amongst Bedouin tribes and compare the Bedouins with Arab and Jewish populations. Data obtained by the classic method of serial dilutions in 317 healthy male Bedouins, aged 16–70 belonging to different tribes, were examined. We discovered significant differ­ences in chemosensitivity to PTC in the Bedouin communities. A high frequency of the t allele was documented in the Bedouin tribes of Hamada, Muzeina, and “other Bedouins” and a relatively low level of the t allele frequency in the Gebelia tribe. The frequencies of non-tasters amongst Arab groups were similar in values to those of the Gebelia tribe. Three other Bedouin tribes showed very high values for the non-tasters’ frequencies. The revealed intertribal differ­ences can be explained by the genetic drift in isolated populations, on the other hand, this may be the result of endog­amy.

LONG DURATION ECHOES FROM AURORA, METEORS, AND IONOSPHERIC BACK-SCATTER

1953 ◽  
Vol 31 (2) ◽  
pp. 171-181 ◽  
Author(s):  
D. W. R. McKinley ◽  
Peter M. Millman
Keyword(s):  
Long Range ◽  
High Frequency ◽  
The Other ◽  
Very High Frequency ◽  
Long Duration ◽  
E Region ◽  
Very High ◽  
Visual Observations

In the course of the Ottawa meteor program some unusual echoes have been detected on 33 Mc. Echoes from the aurora are discussed and correlated with visual observations. Two mechanisms of radio reflections from the aurora have been proposed but the data here presented are insufficient to favor one over the other. On Aug. 4, 1948, six extremely long duration meteor echoes were observed which may have been due to abnormal ionospheric conditions. From time to time since August, 1948, a weak semipermanent echo has been recorded, usually appearing at a range of about 80 km., and enduring up to an hour. It is suggested that this echo is due to back-scatter from the same sources in the lower E-region that are presumed to be responsible for long-range very high frequency propagation.

scholarly journals Skipping of the very-high-frequency structural particle de (的) in Chinese reading

2018 ◽  
Vol 71 (1) ◽  
pp. 152-160 ◽  
Author(s):  
Chuanli Zang ◽  
Manman Zhang ◽  
Xuejun Bai ◽  
Guoli Yan ◽  
Bernhard Angele ◽  
...  
Keyword(s):  
Experimental Psychology ◽  
High Frequency ◽  
The Other ◽  
Chinese Reading ◽  
Very High Frequency ◽  
Sentential Context ◽  
Parafoveal Preview ◽  
Single Character ◽  
Boundary Paradigm ◽  
Very High

How do readers decide whether to skip or fixate a word? Angele and Rayner [2013. Processing the in the parafovea: Are articles skipped automatically? Journal of Experimental Psychology: Learning, Memory, and Cognition, 39, 649–662] showed that English readers base skipping decisions on the parafoveal information available, but not the sentential context. Due to the increased visual density of the language, Chinese readers may be able to process a parafoveal word and integrate it with the sentence context to a greater extent than English readers. Consequently, influences on skipping decisions in Chinese may differ from those in English. In a boundary paradigm experiment, participants read sentences containing a single-character target verb (e.g., 取 meaning get) whose preview was manipulated in three conditions: identity preview; a preview consisting of the syntactically anomalous high-frequency structural particle de (的), or a pseudocharacter preview. The results showed that Chinese readers were more likely to skip the target when the preview was de than in either of the other conditions, suggesting that de-skipping is triggered by the parafoveal preview of a highly frequent particle word rather than on the likelihood of the upcoming word given the sentential context.

scholarly journals The hyperfine structure of the lines of the arc spectrum of rubidium

1933 ◽  
Vol 139 (839) ◽  
pp. 673-682 ◽  
Keyword(s):  
Fine Structure ◽  
High Frequency ◽  
The Other ◽  
Resolving Power ◽  
Nuclear Moment ◽  
Very High Frequency ◽  
Centre Of Gravity ◽  
Helium Neon ◽  
Very High ◽  
Echelon Grating

The structure of the lines of the arc spectrum of rubidium was investigated with a reflexion echelon grating of high resolving power, the light source being a tube containing helium neon mixture at about ½ mm. pressure and a small quantity of rubidium; this tube was fitted with external electrodes and excited with an oscillator of very high frequency. The two resonance lines—7947 and 7800—were found to possess the same fine structure, and each possessed four components: at 0·00, —0·09, —0·19 and —0·23 cm. -1 ; the two outer components, 0·00 and —0·23 cm. -1 , are weak and the two inner components are strong. The lines 4215 and 4201 were found to possess three components; at 0·00, —0·09 and —0·20 cm. -1 . The line at the latter point was slightly broadened. This was presumed to correspond to the same structure as that observed in the resonance lines, the broadened line corresponding to —0·19 and —0·23 unresolved. This observed structure is explained as arising from the 5S 1/2 level; the two outer, weak, components arising from the isotope 87 and corresponding to a separation into two levels, 0·23 cm. -1 apart, in the 5S 1/2 level; while the two inner, stronger, components arise from the other isotope, 85, and correspond to a similar separation of 0·10 cm. -1 . The centre of gravity of the levels of Rb 85 is displaced about 0·02 cm. -1 from that of the levels of Rb 87. Measurements on the intensities of the components of 4201 show that the probable value for the nuclear moment of Rb 85 is 3/2, but the accuracy is not sufficiently high to enable the value for the scarcer isotope Rb 87 to be determined with certainty; the probable value is, however, 5/2. The magnetic moment of the nucleus of Rb 87 is shown to be approximately two and a half times as great as that of Rb 85.

Reproduction in the Herpetofaunal Community of a Banksia Woodland Near Perth, W.a.

1980 ◽  
Vol 28 (3) ◽  
pp. 435 ◽  
Author(s):  
C Davidge
Keyword(s):  
Surface Water ◽  
High Frequency ◽  
Early Summer ◽  
The Other ◽  
Reproductive Pattern ◽  
Very High Frequency ◽  
The Third ◽  
Frog Species ◽  
Second Year ◽  
Very High

Twelve species of lizards (Agamidae, Scincidae, Pygopodidae) and three species of frogs (Leptodac- tylidae) comprise the herpetofaunal community of a Banksia woodland under a mediterranean-type climate in Western Australia. The reptiles bred in September-November and laid eggs in early summer. The requirement of surface water for tadpole development for two of the frog species restricted their breeding time to winter and necessitated their migration from the study area, where no water was avail- able. The third species of frog, Myobatrachus gouldii, lacks an aquatic stage. Its reproductive pattern coincided with neither that of the reptiles nor the other frogs. Collections of most species in the com- munity were not equally divided between sexes. For reptiles, this possibly was owing to differential trapping of the sexes. The very high frequency of capture of female frogs, other than those of M. gouldii, was probably related to differential dispersal of the sexes from breeding areas. The distribution of the percentage frequency of snout-vent lengths for six species of lizards suggests that individuals did not breed until their second year.

Thrombotic Thrombocytopenic Purpura: Mechanism for Effectiveness of Plasmapheresis

1979 ◽  
Author(s):  
J. G. Kelton ◽  
P. B. Neame ◽  
I. Walker ◽  
A. G. Turpie ◽  
J. McBride ◽  
...  
Keyword(s):  
Platelet Count ◽  
Thrombotic Thrombocytopenic Purpura ◽  
The Other ◽  
Unknown Etiology ◽  
Normal Range ◽  
Antiplatelet Antibody ◽  
Thrombocytopenic Purpura ◽  
Serious Illness ◽  
Normal Platelet ◽  
Very High

Thrombotic thrombocytopenic purpura (TTP) is a rare but serious illness of unknown etiology. Treatment by plasmapheresis has been reported to be effective but the mechanism for benefit is unknown. We have investigated the effect of plasmapheresis in 2 patients with TTP by quantitating platelet associated IgG (PAIgG) levels prior to and following plasmapheresis. Both patients had very high levels of PAIgG at presentation (90 and A8 fg IgG/platelet respectively, normal 0-5). in both, the PAIgG levels progressively fell to within the normal range and the platelet count rose following plasmapheresis. One patient remained in remission with normal platelet counts and PAIgG levels. The other relapsed after plasmapheresis and the PAIgG level rose prior to the fall in platelet count. Plasmapheresis was repeated and resulted in normalization of both the platelet count and PAIgG level. It is suggested that plasmapheresis removes antiplatelet antibody or immune complexes which may be of etiological importance in this illness.

Experimental Investigation of very High Frequency Slot Antenna on M-60A-1 Tank

1977 ◽  
Author(s):  
D. V. Campbell ◽  
William Kennebeck ◽  
A. Zanella ◽  
Paul Sexton
Keyword(s):  
Experimental Investigation ◽  
High Frequency ◽  
Slot Antenna ◽  
Very High Frequency ◽  
Very High

Growth Characteristics of Activated Sludges Acclimated to para-Nitrophenol in Batch and Continuous Modes

1994 ◽  
Vol 29 (7) ◽  
pp. 327-333
Author(s):  
Y. Matsui ◽  
F. Yamaguchi ◽  
Y. Suwa ◽  
Y. Urushigawa
Keyword(s):  
Growth Characteristics ◽  
The Other ◽  
Operational Mode ◽  
Continuous Mode ◽  
Relative Resistance ◽  
Batch Mode ◽  
The Given ◽  
Operational Modes ◽  
Very High ◽  
Sensitive Group

Activated sludges were acclimated to p-nitrophenol (PNP) in two operational modes, a batch and a continuous. The operational mode of the PNP acclimation of activated sludges strongly affected the physiological characteristics of predominant microorganisms responsible for PNP degradation. Predominant PNP degraders in the sludge in batch mode (Sludge B) had lower PNP affinity and were relatively insensitive to PNP concentration. Those of the sludge in continuous mode (Sludge C), on the other hand, had very high PNP affinity and were sensitive to PNP. MPN enumeration of PNP degraders in sludge B and C using media with different PNP concentrations (0.05, 0.2,0.5 and 2.0 mM) supported the above results. Medium with 0.2 mM of PNP did not recover PNP degraders in sludge C well, while it recovered PNP degraders in sludge B as well as the medium with 0.05 mM did. When switching from one operational mode to the other, the predominant population in sludge B shifted to the sensitive group, but that of sludge C did not shift at the given loading of PNP, showing relative resistance to inhibitive concentration.

Islamic hedging for pilgrimage funds: case of Indonesia

2019 ◽  
Vol 11 (3) ◽  
pp. 328-341
Author(s):  
Rifki Ismal ◽  
Nurul Izzati Septiana
Keyword(s):  
Exchange Rate ◽  
The Other ◽  
Exchange Rate Risk ◽  
Content Type ◽  
Other Hand ◽  
Rate Risk ◽  
Risk Identify ◽  
Hajj Season ◽  
The Right ◽  
Very High

Purpose The demand for Saudi Arabian real (SAR) is very high in the pilgrimage (hajj) season while the authority, unfortunately, does not hedge the hajj funds. As such, the hajj funds are potentially exposed to exchange rate risk, which can impact the value of hajj funds and generate extra cost to the pilgrims. The purpose of this paper is to conduct simulations of Islamic hedging for pilgrimage funds to: mitigate and minimize exchange rate risk, identify and recommend the ideal time, amount and tenors of Islamic hedging for hajj funds, estimate cost saving by pursuing Islamic hedging and propose technical and general recommendations for the authority. Design/methodology/approach Forward transaction mechanism is adopted to compute Islamic forward between SAR and Rupiah (Indonesian currency) or IDR. Findings – based on simulations, the paper finds that: the longer the Islamic hedging tenors, the better is the result of Islamic hedging, the decreasing of IDR/USD is the right time to hedge the hajj funds and, on the other hand, the IDR/SAR appreciation is not the right time to hedge the hajj funds. Findings Based on simulations, the paper finds that: the longer the Islamic hedging tenors, the better is the result of Islamic hedging, the decreasing of IDR/USD is the right time to hedge the hajj funds and, on the other hand, the IDR/SAR appreciation is not the right time to hedge the hajj funds. Research limitations/implications The research suggests the authority to (and not to) hedge the hajj fund, depending on economic conditions and market indicators. Even though the assessment is for the Indonesian case, other countries maintaining hajj funds might also learn from this paper. Originality/value To the best of author’s knowledge, this is the first paper in Indonesia that attempts to simulate the optimal hedging of hajj funds.

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