scholarly journals Further studies on the relationship between IRSL and BLSL at relatively high temperatures for potassium-feldspar from sediments

2015 ◽  
Vol 159 ◽  
pp. 238-245 ◽  
Author(s):  
Zhijun Gong ◽  
Bo Li ◽  
Sheng-Hua Li
2018 ◽  
Vol 501 ◽  
pp. 361-370 ◽  
Author(s):  
I-Hsuan Lo ◽  
Athanasia Tzelepi ◽  
Eann A. Patterson ◽  
Tsung-Kuang Yeh

2016 ◽  
Vol 35 (74) ◽  
Author(s):  
María Del Socorro Barraza Salcedo ◽  
Martha Leonor Rebolledo Cobos

<p><strong>ABSTRACT. </strong><em><strong>Background:</strong></em> Forensic dentistry in cases of incineration provides scientific elements that allow the identification of bodies, by analyzing dental organs, through the isolation of DNA obtained from the pulp as an alternative to confirm the identity of the victim. When the degree of temperature is highly elevated, dental tissues are vulnerable and therefore the DNA pulp is not salvageable, wasting resources and time by lack of standards to identify macroscopic characteristics that indicate this situation reliably. <em><strong>Objective:</strong></em> To describe the main features of teeth subjected to high temperatures and the relationship of these to the viability of their DNA, as a contribution to forensic genetic identification. <em><strong>Methods:</strong></em> A literature search for three databases were used; Pubmed, EBSCO and Google academician, 50 articles were selected in several languages, which made regarding the descriptors "cremated teeth; violence; Forensic Odontology; ID; DNA samples; dental pulp". <em><strong>Results:</strong></em> Most authors reported the resistance of dental tissues when subjected to high temperatures and others showed the success of the identification through dental comparisons. <em><strong>Conclusions:</strong></em> A successful identification evidenced by DNA extracted from bone and dental remains. The literature reviewed suggests that up to certain temperatures, can be carried out identification by forensic genetics of cremated victims by DNA contained in dental pulp. Strict national referencing was observed in the physical characteristics or incinerated dental macroscopic bodies.</p>


1966 ◽  
Vol 29 (10) ◽  
pp. 319-322 ◽  
Author(s):  
B. J. Demott

Summary Seasonal differences occur in the freezing point depression (Δ) of milk produced in Tennessee, A larger Δ occurred in the colder months of the year than in the summer and early fall of 1963 and 1964. Weather conditions were of more significance in the fall and spring than in winter and summer. High temperatures and high vapor pressures were associated with smaller Δ's. The Δ between herds was statistically different, but this difference could not be attributed to the breed of cow in the herd. Producers whose milk had a small average Δ had, in many cases, a great deal of variation in their Δ's. The relationship between quantity of milk sold per producer and Δ is, at most, very slight.


1976 ◽  
Vol 50 (3) ◽  
pp. 193-196 ◽  
Author(s):  
A. M. Ghandour

AbstractIt was shown that maintenance of cercariae of S. mansoni and S. haematobium at low (10°C) and high temperatures (40°C) markedly increased their mortality during penetration of mammalian host skin. These increased losses in the skin accounted for the known decrease in infectivity, as measured by adult worm recovery, of cercariae kept at low or high temperatures.


1962 ◽  
Vol 4 (32) ◽  
pp. 161-172
Author(s):  
Irving I. Schell

AbstractAn analysis of the iceberg count off Newfoundland for the period 1880–1925 shows that stronger than usual north-westerly winds off the Labrador and Newfoundland coasts and relatively low temperatures over Newfoundland during the months from December to March lead to greater than average berg counts off Newfoundland in the following months, mainly April to June. Conversely, lighter than usual north-westerly winds and relatively high temperatures lead to lower than average berg counts in the following months. The relative strength of winds can be measured by the pressure difference between Belle Isle and Ivigtut. The relationship investigated provides a basis for predicting the berg count each year at the end of March. A comparison of the computed values of the berg count with the actual values on scale 0 to 10 for the following period 1927–61 shows marked agreement.It is further indicated that a more detailed representation of the winds, temperatures and other elements during the winter and early spring in that general area would lead to a closer relationship with the berg count and a broader basis for its prediction.


2018 ◽  
Vol 3 (1) ◽  
pp. 31
Author(s):  
Belaribi Hassiba ◽  
Mellas Mekki ◽  
Rahmani Fraid

The paper analyses the effects of high temperatures on the concrete residual strength using ultrasonic velocity (UPV). An experimental investigation was conducted to study the relationship between UPV residual data and compressive strength of concrete with different mixture proportions, cubic specimens with water-cement ratio of 0.35. They were heated in an electric furnace at temperatures ranging from 200°C to 600°C. In this experiment a comparison was made between the four groups which include two types of fibers steel 0,19%, 0,25% and 0,5%, polypropylene: 0,05%, 0,11% 0,16 % by volume. Cube specimens were tested in order to determine ultrasonic velocity. The compressive strength was tested too. According to the results, relations were established between ultrasonic velocity in the specimens and the compressive strength at different temperature and the range of the velocity of the waves were also determined for this kind of concrete. Result of the test showed that UPV test can be successfully used in order to verify the consistency of structures damaged by fire.


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