Search for a signal on intermediate baryon systems formation in hadron-nuclear and nuclear-nuclear interactions at high energies

We have analyzed the behavior of different characteristics of hadron-nuclear and nuclear-nuclear interactions as a function of centrality to get a signal on the formation of intermediate baryon systems. We observed that the data demonstrate the regime change and saturation. The angular distributions of slow particles exhibit some structure in the above mentioned reactions at low energy. We believe that the structure could be connected with the formation and decay of the percolation cluster. With increasing the mass of colliding nuclei, the structure starts to become weak and almost disappears ultimately. This shows that the number of secondary internuclear interactions increases with increasing the mass of the colliding nuclei. The latter could be a reason of the disintegration of any intermediate formations as well as clusters, which decrease their influence on the angular distribution of the emitted particles.Comment: 2 pages and one figur

(Table 2) Contents of labile mercury forms in soils from the area of the Bol'shoe Yarovoe lake

We examined mercury distribution in soils and plants of the catchment area of the Bol'shoe Yarovoe lake with the Altaikhimprom chemical industrial complex localized on its shore. Data on mercury contents show considerable mercury flow into environment, though the industrial complex and its waste do not pose serious threat. Revealed pollution in the immediate vicinity of the industrial complex including that due to atmospheric transport, as well as elevated content of mercury in hydrochloric and alkaline extracts suggest its intense migration from the waste. Therefore, it is necessary to make an inventory of the industrial-complex waste and perform a detailed study of the lake ecosystem as a model unit

Determination of boron at the geologicalsamples by atomic emission spectroscopy with using two-jet arc plasmotron

Приведены результаты определения бора в геологических пробах атомно-эмиссионным спектральным методом с применением в качестве источника возбуждения спектров дугового двухструйного плазмотрона. Показано, что модернизация спектрографа ДФС458С и применение многоканальных анализаторов МАЭС позволяет проводить определение бора по группе аналитических линий, что повышает достоверность результатов анализаIn the paper is considered of determination of boron at geological samples by atomic emission spectroscopy with using two-jet arc plasmotron in the capacity of excitation source of spectrums. The modernization of spectrograph DFS-458 and application multichannel analysers MAES gives possibility of boron determination over groups of analytical lines and increases reliability of analysis results

An improvement in the method of chemical preparation of geological samples in carius tube digestion to determine platinum group elements and rhenium

Предложена усовершенствованная методика разложения геологических образцов в трубках Кариуса с использованием стального автоклава, заполненного раствором щавелевой кислоты. Ступенчатое разложение щавелевой кислоты препятствует разрушению трубок Кариуса. Определение элементов платиновой группы и рения выполнялось изотопным разбавлением с масс-спектрометрическим окончанием. Os определялся отдельно из спиртового раствора, используемого в качестве ловушки, после дистилляции непосредственно из трубки Кариуса. Приводятся сравнительные данные по концентрациям элементов платиновой группы и рения в контрольном опыте и вклада от истирания образцов. Правильность методики подтверждена на основе анализа стандартных образцов ультраосновных пород. Относительное стандартное отклонение результатов анализа составляет от 5 до 20 %.This paper describes a modified Carious tube method which utilizes a sealed stainless steel high pressure autoclave filled by solution of oxalic acid to prevent explosion of tube by its graduated digestion during run. PGE and Re determination was carried by ID-ICP-MS method. Os measurement was performed from alcohol solution used as a trap under Os distillation directly from Carious tube. The work presented here demonstrates comparison data between total procedural blank and concentration impurity from powdering pure quartz. The PGE and Re mean concentration values for peridotite reference material show a good agreement with previous studies. The relative standard deviation varied from 5 to 20%