scholarly journals Copper Concentration and Distribution in the Ground Water of Delta State Polytechnic, Ozoro, Nigeria

Author(s):  
O. R. Akpomrere ◽  
H. Uguru

Copper toxicity in the ecosystems have becomes a global concern in recent times; therefore, there is need to curtail the increment of copper concentration within the environment. In this study, a total of 67 ground water samples were collected from the premises of Delta State Polytechnic, Ozoro, at a depth of 90 cm. The water samples were collected during the peak of the rainy season (September 2019); when the water table of the study area was very high, close to the soil surface. Copper concentration of all the water samples collected was measured using the Atomic Absorption Spectrophotometer (AAS). The results showed that copper concentration in the study ranged between 1.01 mg/L and 2.105 mg/L. The spatial distribution of the copper concentration within the study area was determined using Geostatistical tool. Variation map developed from the results showed that the copper concentration does not spread uniformly across the study area. High copper concentration was generally recorded at the North Eastern and central parts of the school; while low copper concentration was recorded at the South Eastern part of the school. Furthermore, the results strongly showed that waste dump potentially affects the copper concentration of the ground water within the study area. This study results advocated the need for proper waste disposal with the polytechnic environment, and the adequate treatment of the groundwater before human consumption.

2015 ◽  
Vol 37 ◽  
pp. 383-406
Author(s):  
Jadwiga Kozłowska-Doda

The Polish speech of several villages in the neighborhood of Doсishki compared with the north-eastern peripheral dialectThe scientific studies on the Polish language on the territory of the former Grand Duchy of Lithuania have focused mainly on specific regions and historical periods. Despite the large number of the recorded materials and their analyses, scientists were unable to establish joint research programs and perform regular investigations; they also failed to create a map of different settlements, so as to develop a holistic picture of the languages of the region. Today, it is difficult to compare the study results of dialectologists and other scholars, because there is no comprehensive analysis of the peripheral Polish dialects.The paper compares the features of the Polish dialect from the area of Docishki with Polish ethnic dialects, as well as with other eastern peripheral dialects. Some other phonetic and morphological features are characterized by the resulting substrate and linguistic contacts. The differences in the Polish dialect of Voronovo district in Belarus are also presented.The analysis of the material has yielded that the Polish speech in the neighbourhood of  Doсishki is closely related to the north-eastern peripheral dialects, known as polszczyzna kresowa ‘borderland Polish’. It is mostly characterized by the same features as the Polish language of the area around Vilnius (including a part of the present-day Belarus). However, certain features of the local Polish dialect in villages near Doсishki are not attested in the neighbouring towns, but they are present in a few remote areas, such as the Kaunas region and only a complete description of a dialect will enable linguists to detect such features. Польская речь нескольких деревень в окрестностях Дотишек на фоне северо-восточного периферийного диалектаИсследования польского языка на территории былого ВКЛ проводились до сих пор нерaвномерно как во времени, так и в пространстве. Несмотря на большое количество записанных и проанализированных материалов, учёным не удалось выработать совместных программ и методoлогии исследований, не получилось также разработать сетку населённых пунктов с целью представить в итоге целостную языковую картину региона. Сегодня трудно сопоставить результаты исследований диалектологов и других специалистов в связи с нехваткой комплексных анализов периферийных польских говоров. Автором сравниваются особенности польского говора с окрестностей Дотишек с польскими этническими говорами, а также другими восточными периферийными говорами; характеризуются некоторые фонетические и морфологические черты, обусловленные субстратом, а также языковыми контактами; сделана попытка показать различия в польской речи на территории Вороновщины на Беларуси. Как показывает анализ материала, польская речь в окрестностях Дотишек тесно вплетена в контекст северо-восточного периферийного диалекта, известного как „польшчызна крэсова”. Её характеризуют в основном те же особенности, что и польский язык исторической Виленщины (включая и часть современной Беларуси). Однако определённые языковые черты местного польского говора в расположенных вблизи Дотишек деревнях не были зафиксированы в соседних ареалах, зато известны на несколько отдалённой территории, напр. в районе Каунаса, и только полная характеристика языковой системы речи позволяет такие черты выявить.


Koedoe ◽  
1994 ◽  
Vol 37 (2) ◽  
Author(s):  
W.S. Matthews ◽  
G.J. Bredenkamp ◽  
N. Van Rooyen

An analysis of the vegetation of the relatively low altitude regions of the North-eastern Mountain Sourveld of the eastern Transvaal escarpment is presented. Releves were compiled in 53 stratified random sample plots. ATWINSPAN-classification, refined by Braun-Blanquet procedures, revealed seven plant communities. In the hierarchical classification one class, one alliance, four associations, four subassociations and two valiants are recognised. Formal syntaxonomic descriptions of the syntaxa are given. All communities are related to specific environmental conditions, of which geology, aspect, altitude and rockiness of the soil surface are the most important.


2020 ◽  
Author(s):  
Pavel Serov ◽  
Tamara Bayanova ◽  
Ekaterina Steshenko ◽  
Eugenii Kunakkuzin ◽  
Elena Borisenko

<p>The Pados-Tundra massif is located in the western Kola Peninsula and included in the Notozero ultrabasic rock complex (Vinogradov, 1971). The intrusion occurs as a body of ca. 13 km<sup>2</sup> stretched out to the north-east. Enclosing rocks are Archaean granite- and granodiorite-gneisses. There are three major areas in the massif structure (Mamontov, Dokuchaeva, 2005): endocontact area, rhythmically layered series, and upper area. The endocontact area with thickness of 10-20 m occurs as schistose amphibole rocks formed during the metamorphism of main rocks. The rhythmically layered series occurs as a number of rocks from dunites to orthopyroxenites and composes most of the massif. There are 7 rhythms in total, each of which starts with dunites and ends with orthopyroxenites. Dykes of mezo- and leucocratic gabbro, diorites, and hornblendites are developed in the series rocks. The upper gabbronorite area can be partially observed in the north-eastern massif. Presumably, its major volume has been overlapped by enclosing rocks as a result of the overthrust. In the massif, there are 4 horizons of disseminated stratiform chromite ores, which are confined to dunites and serpentinites, as well as to a number of lens- and column-like bodies (podiform type) of chromite ores (Mamontov, Dokuchaeva, 2005; Barkov et al., 2017). Previous isotope-geochronological studies have determined the massif rock age of 2.15 Ga (Shapkin et al., 2008). However, further geological field observations and analysis of the obtained data assume that the intrusive is much older.</p><p>New Sm-Nd geochronological data indicate that the massif rocks and its rhythmically layered series are of Paleoproterozoic age, which is similar to the age of the Cu-Ni-Co-Cr-PGE ore-magmatic system of the Fennoscandian Shield (Amelin et al., 1995; Bayanova et al., 2014, 2017, 2019; Hanski et al., 2001; Huhma et al., 1990, 1996; Layered intrusions ...; 2004; Maier, Hanski, 2017; Mitrofanov et al., 2019; Peltonen, Brugmann, 2006; Puchtel et al., 2001; Serov, 2008; Serov et al., 2014; Sharkov, 2006; Sharkov, Smolkin, 1997). Complex Sm-Nd and U-Pb isotope-geochronological studies have allowed determining the major formation and alteration stages of the Pados-Tundra complex rocks:</p><p>–  formation of the rhythmically layered series rocks of the intrusive 2485±77 Ma, harzburgites of the layered series – 2475±38 Ma;</p><p>– metamorphism of the massif rocks at the turn of 1.95 - 1.9 Ga;</p><p>– postmetamorphic cooling of the complex rocks tо 650°-600°С at the turn of 1872±76 Ma (Sm-Nd for metamorphic minerals) and then to 450°-400°С (U-Pb for rutile, 1804±10 Ma).</p><p>Therefore, the study results expand geography the East-Scandinavian large Palaeoproterozoic igneous province and are prospective for further study of analogous ultramafite-mafite complexes.</p><p>All investigations and were supported by the RFBR 18-05-70082, 18-35-00246, Presidium RAS Program #48 and are in frame of the Theme of Scientific Research 0226-2019-0053.</p>


Author(s):  
O. Danylchenko

The article presents the study results of the effect of bacterial preparations Rhizohumin (based on nitrogen-fixing bacteria Rhizobium leguminosarum strain 31) and Polymyxobacterin (based on phosphorus-mobilizing bacteria Bacillus polymyxa KB) on different backgrounds of mineral nutrition (P60K60, N60P60K60) when growing lentil in the north-eastern forest-steppe of Ukraine. The research was conducted on the basis of the training and research production center of Sumy National Agrarian University according to generally accepted methods during 2016-2018. Lentil is one of the most valuable legumes. In terms of nutrition and nutritional qualities, this culture has no equal. The development of new and improvement of existing models of lentil cultivation technology, in particular the pre-sowing inoculation of seeds with bacterial preparations to increase productivity is an important topical issue that requires appropriate scientific justification. Inoculation of lentil seeds with bacterial preparations causes additional involvement in the nitrogen cycle of the atmosphere. This event is one of the most important in modern technologies for growing legumes as an element of greening and energy conservation. Due to the fixation of nitrogen by nodule bacteria of the genus Rhizobium, lentils play an important role in increasing soil fertility. Therefore, seed inoculation is an effective and necessary measure that affects plant development throughout ontogenesis. The study of the peculiarities of growth and development of lentils during ontogenesis makes it possible to reveal the important features of the formation process of high productivity, to determine the scientific basis for the creation of highly productive agrocenoses of legumes. The level of yield of legumes is determined by such elements of productivity as: the number of beans per plant, the weight of grains per plant and the weight of 1000 grains. In this regard, there is a need to take into account these indicators, which, by substantiating the cultivation techniques will help to increase yields. It is established that the combination of seed inoculation with the application of mineral fertilizers intensified the processes of growth and development of plants, caused an increase in the number of beans and grain weight per plant, as well as the mass of 1000 grains, as a result - yield increased by 0.42-0.58 t / ha . The maximum level of yield was provided by a combination of pre-sowing inoculation of seeds with Rhizohumin with fertilizer application in a dose N60P60K60.


Author(s):  
M.A. Sleigh ◽  
E.S. Edwards ◽  
A.W.G. John ◽  
P.H. Burkill

Microzooplankton from water samples collected from depths of between 10 and 50 m at four stations between 47° and 60°N along the 20°W line of longitude during each of three cruises were classified into taxonomic groups and measured to estimate their abundance and biomass. Metazoan members of the microzooplankton were rarely found and their overall biomass was negligible in comparison with protists. The mean numbers of protistan microzooplankton cells >15 μn ranged between 3 and 11 cells ml-1, with mean biomass values between 2 and 14 μgC 1-1. Numbers and biomass increased towards midsummer and then decreased again, except at the most northerly station where the values were highest in the early August sample. The ratio of dinoflagellate to ciliate biomass tended to increase through the summer to levels of three or four and then decrease again, with later changes further north; this ratio also tended to be higher at deeper levels than in the mixed layer. Gymnodinioid forms usually dominated dinoflagellate numbers and biomass, but they were overshadowed by Protoperidinium and others at the two southern stations in June and July samples. Strombidium species were the dominant ciliates, commonly providing 25–50% of total microzooplankton biomass, while predatory haptorid ciliates were occasionally numerous, but tintinnids never formed more than 10% of the biomass.


2020 ◽  
Vol 5 (2) ◽  
pp. 048-060
Author(s):  
Otajevwo Dafinone Festus ◽  
Dio Princess Tamaramiene

This study was aimed at assessing the bacteriological and physio-chemical qualities of the ground well water which is the only available drinking water to residents of Ofougbene community of Burutu Local Government Area, in order to check it's fitness for drinking and evaluate the awareness of the people about dangers of drinking untreated water. Seven water samples coded Station1-Station 7 were obtained from seven different ground wells in the study area. Bacteriological assessment was done by Most Probable Number (MPN) technique while physical, chemical and organic analyses of the water samples were carried out by known standard methods. Bacterial organisms isolated were Escherichia coli, Klebsiella pneumoniae, Enterobacter aerogenes and Staphylococcus epidermidis. All ground water samples contained total aerobic bacterial load ranging from 1.8 x 103 to 7.0 x 103 CFU/ml. The mean ± standard deviation values of pH, electrical conductivity, color, turbidity, Total Dissolved Solids, Suspended Solids, alkalinity, chloride, hardness, phosphates, nitrates, sulphates, calcium, magnesium, Dissolved Oxygen and Biological Oxygen Demand were: 5.8±16.43, 51.4±27.0uS/cm, 22.4±12.32mg/l, 11.8±5.14mg/l, 28.4±15.10mg/l, 3.8±3.80mg/l, 15.4±12.49mg/l, 21.12±0.02mg/l, 53.3±32.72mg/l, 0.20±0.04mg/l, 2.77±0.27mg/l, 9.28±3.60mg/l, 11.9±12.10mg/l, 1.7±0.51mg/l, 5.9±0.58mg/l and 3.04±0.51mg/l respectively for all the water samples assessed. Whereas water quality status for all samples was unsatisfactory, water quality concern was high. Compared to reference values provided by Standard Organization of Nigeria (SON) and presence of pathogens, we conclude that the ground water used by the people of the community is unfit for human consumption. This is for the immediate attention of the Public Health Authorities of both the LGA concerned and the Delta State Government.


2019 ◽  
Vol 11 (3) ◽  
pp. 207-210
Author(s):  
D. Vasilev ◽  
S. Malchev ◽  
A. Zhivondov

Abstract. During the period 2015-2017, scientific expeditions were conducted in the region of the town Shumen, located in the north-eastern part of Bulgaria, mainly around the village Madara where the concentration of natural forms derived from seedlings is the greatest. The purpose is to discover and research old local forms of the so called “vineyard peach” and to preserve them for possible future inclusion in breeding programmes to create new cultivars using more extended genepool. As a result, three forms of “vineyard peach” were selected from the local populations. The fruits of the three local forms are small and with primitive taste qualities but fit for human consumption. Two of the forms have white fruit flesh and one is with green. Two of the peach forms have vigorous growth, but one of the forms with white fruit flesh is of weak vigour. The three forms are spontaneous natural products obtained through long-term seed propagation. The trees are old but vital and without visual damage by diseases and pests, regularly bear fruits and have good annual growth despite competition from weeds, bushes and trees.


2021 ◽  
Vol 16 (1) ◽  
pp. 18-33
Author(s):  
Paran Jyoti Kalita ◽  
Champa Gogoi ◽  
Sausthov Maunash Bhattacharyya ◽  
Rajib Lochan Goswamee

In the current study, the quality of ground water (GW) from an area of western part of Jorhat district of Assam (India) was assessed in order to ensure the safety of its use in irrigation and drinking purposes. The physico-chemical parameters of the collected GW samples were evaluated and compared the data with the Indian Standards (IS) for drinking purposes. The investigation was mainly emphasised on the evaluation of Water Quality Index (WQI) and different parameters for the quality measurement of water for drinking and irrigation purposes, respectively. Correlations among the physico-chemical parameters were evaluated through statistical analysis. The physico-chemical parameters revealed that almost all the parameters except iron were within the permissible limit. Arsenic was found to be present in few water samples in both seasons (pre and post monsoon). In both the seasons, the WQI of the majority of collected water samples were observed to be falling under the poor category for drinking. Almost all the collected water samples were found to be fit for irrigation purposes. However, based on sodium percentage (Na %), Kelly’s ratio (KR), and Magnesium ratio (MR), few of the water samples are classified to be doubtful and inappropriate for irrigation.


Author(s):  
Maryna Kolisnyk ◽  
Yuliya Kornytska

The article presents the experimental study results of the specificity of the deviations in the vocalic system registered in the pronunciation of the English north-eastern dialect speakers within the period of 1990-2000 years. With the regard to the current tendencies of including dialect not only to the scope of geographic dialectology but also to the scope of sociolinguistics, as well as aiming to provide the detailed study of functionality characteristics of any dialect and the north-eastern dialect of England as a such it was decided to analyse the vocalic system present in the speech of the local men and women who represent different socio-cultural level within the period of 1990-2000. Moreover, it was proven that the period of 1990-2000 is crucial for the development of the dialect under study, since the end of the XXth century witnessed major changes in the development of the society.The nomenclature of segmental units of the north-eastern dialect vocalic system was determined by means of auditory and comparative analyses of segmental phonetic units’ deviations from the orthoepic norm of the English language. The article also presents the percentage rates of the mentioned deviations actualizations as well as gives a graphical interpretation of the quantitative relation between the specific types of deviations in the vowel system and the speakers’ socio-cultural level (high, middle, low) and their sex (the speakers were represented by females and males in the age from 16 to 80 years old). The formed frequency rate matrixes of such deviations show that the social changes which took place in the Northern East of England within the period of 1990-2000 strongly influence the tendency shift of speech standardization among speakers with high and middle socio-cultural levels.


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