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Documents published in Scipedia

• Assessment of Organochlorine Pesticide Residues in Water, Sediments and Fish from Lake Tashk, Iran

  F. Kafilzadeh

  Achievements in the Life Sciences (2015). Vol. 9 pp. 107-111

  
  

  Abstract

  In this study, the levels of organochlorine (OC) pesticide residues in Lake Tashk have been investigated using water, sediment and fish (carp) samples as a case study to find out the extent of pesticide contamination and accumulation in the lake. Six OC pesticides namely DDT, DDE, lindane, endosulfan, heptachlor and chlordane were analyzed in four sites at four seasons. Water samples were processed using a liquid–liquid extraction technique and gas chromatograph equipped with electron capture detector (GC-ECD). Soxhlet extraction was used for fish and sediment samples followed by clean up and gas chromatograph. DDE was the predominant residue in all the samples analyzed, at the mean concentrations of 0.075 ppb, 8.750 ppb and 4.446 ppb in water, sediment and fish samples, respectively. The lowest levels of OC pesticides were related to heptachlor and chlordane which none of them were found in water samples. Gonban and Midstream sites had the highest and the lowest concentrations of OC pesticides, respectively.

  Abstract
  In this study, the levels of organochlorine (OC) pesticide residues in Lake Tashk have been investigated using water, sediment and fish (carp) samples as a case study to find [...]

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• Rare Earth Elements: Review of Medical and Biological Properties and Their Abundance in the Rock Materials and Mineralized Spring Waters in the Context of Animal and Human Geophagia Reasons Evaluation

  A. Panichev

  Achievements in the Life Sciences (2015). Vol. 9 pp. 95-103

  
  

  Abstract

  New data on the abundance of rare earth elements (REE) and their biological properties, which appeared in recent decades, force the researchers to reconsider the facts previously collected by different researchers related to the study of the geophagia phenomenon in animals and humans. From the standpoint of the new data it becomes apparent that one of the reasons for instinctively traditional form of geophagia, as well as for drinking water from mineralized sources by animals and a man with lengthy visits to the same places could be an instinctual drive of a specific organism to adjust in their bodies and tissues the concentration and ratio of the rare earth elements which are able to actively influence, either directly or indirectly (through the effects on metabolism of other chemical elements in the body) the biochemical and physiological processes that determine the quality of health. Since REE influence at the level of nerve tissue biochemistry, hormonal regulation of the body and even at the genetic level, it all can point to a higher order which they occupy in the hierarchy of elements in the composition of any organism. It seems that REE have reasons to claim to be the main causes of all instinctive forms of traditional geophagia and related consumption of mineralized water.

  Abstract
  New data on the abundance of rare earth elements (REE) and their biological properties, which appeared in recent decades, force the researchers to reconsider the facts previously [...]

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• A Simple Plate Method for the Screening and Detection of Fucoidanases

  A. Silchenko, H. Khanh, C. Hang, V. Kurilenko, A. Zakharenko, A. Zueva, B. Ly, M. Kusaykin

  Achievements in the Life Sciences (2015).

  
  

  Abstract

  A novel method was developed for the screening and detection of fucoidanase activity in bacterial colonies using fucoidan–agarose plates and staining with hexadecyltrimethylammonium bromide (Cetavlon). Colonies with fucoidanase activity were indicated by a transparent halo. The medium containing undegraded fucoidan showed as a milk-colored background, but areas with degraded fucoidan under the colonies were visualized as a transparent halo.

  Abstract
  A novel method was developed for the screening and detection of fucoidanase activity in bacterial colonies using fucoidan–agarose plates and staining with hexadecyltrimethylammonium [...]

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• Study of the Musk Deer Population Structure in Sikhote-Alin Reserve

  V. Zaitsev, I. Seryodkin, D. Maksimova, S. Soutyrina

  Achievements in the Life Sciences (2015).

  
  

  Abstract

  Research on population structure and behavior of musk deer has been conducted on defined areas within Sikhote-Alin Reserve (Russian Far East) since 1974 using a combination of techniques (snowtracking, visual observation, and radiotracking since 2012). We have acquired previously unknown data on the structure of the overall population and sub-groups, home range size, sex and age-related differences in habitat use, inheritance of home ranges and territories between generations, mechanisms regulating distribution of individuals and population structure. This knowledge is extremely valuable in understanding recent population declines of musk deer associated with habitat destruction, unregulated hunting and natural cycles in population size.

  Abstract
  Research on population structure and behavior of musk deer has been conducted on defined areas within Sikhote-Alin Reserve (Russian Far East) since 1974 using a combination [...]

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