bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of the environmental state of surface waters of right-bank tributaries of the upper reaches of the Pripet River by macrophyte index MIR
Authors: Malovanyу Myroslav S. , Boіaryn Maria , Muzychenko Oksana , Tsos Oksana
Published: March 2023

The results of the study of the macrophytes of the rivers Turia, Vyzhivka and Tsyr, the right-bank tributaries of the upper reaches of the Pripet River, are presented. The species composition of aquatic and coastal aquatic vascular plants was investigated during the vegetation seasons of 2018 and 2019 at 9 observation points located along the rivers from the source to the mouth. The most numerous species composition, 57 species, was found in the Turia River, 36 in the Vyzhivka River, and 28 species were identified in the Tsyr River. The macrophyte index for rivers (Pol.: makrofitowy indeks rzeczny – MIR) was determined from the results, and the ecological state of the rivers was assessed according to the methodology of the macrophyte assessment of rivers (Pol.: makrofitowa metoda oceny rzek – MMOR). The investigation showed that water quality in the Turia River on sites No. 1, 3 and 4 belongs to class III, satisfactory category. The surface water quality on site No. 2 of the Turia River belongs to class II, a good category. The water quality in the Vyzhivka River on all test sites belongs to class II, a good category, which testifies to favourable ecological conditions for the development of higher aquatic plants along the whole course. The water quality in the Tsyr River on test site No. 8 (Kamin-Kashyrskyi, upper course) corresponds to class II, good category. On test site No. 9 (middle course), the quality of surface waters of the Tsyr River worsens to the class III, satisfactory category.
Discrimination different lithological units using a remote sensing application: A case study in the Dokan Area, Kurdistan Region – Iraq
Authors: Bety Azhar Kh.S.
Published: March 2023

This study discriminates different lithological units of the Dokan Area, Kurdistan Region, NE-Iraq, using rapid-eye satellite data by image enhancement techniques, namely the false colour composite (FCC), optimum index factor (OIF), minimum noise fraction (MNF), principal component analysis (PCA) and band ratio (BR). Results of analyses show that the FCC (R: 5; G: 4: B: 1); MNF (R: 2, G: 3, B: 5); PCA (R: 5, G: 2, B: 1), and band ratio (R: 5/4, G: 2/1, B: 5/3) are the best to different geological formations. The results are confirmed in the field support with the geological maps available for the area. Geological formations appeared as a result of the collision process between the Arabian plate and the Iranian plate. In general, the study area is mountainous, which is usually represented by anticline folds with the main NW – SE trend in the study area, with very a rugged relief mainly due to the continuous collision between the Arabian plate and Iranian plate. The digital image processing of satellite data has demonstrated the sensor’s capability and efficiency of the image processing methods in identifying and mapping geological units in the study area.
Effect of cultivation factors on embryogenesis in isolated microspore culture of carrot ( Daucus carota L.)
Authors: Voronina Anastasia V. , Vishnyakova Anastasiia V. , Monakhos Sokrat G. , Monakhos Grigory F. , Ushanov Alexander A. , Mironov Aleksey A.
Published: March 2023

Using doubled haploid technologies inbreeding can significantly reduce the time to obtain homozygous parental lines required for the production of F1-hybrid of vegetable crops. This study aims to investigate the influence of factors on the efficiency of carrot embryogenesis in isolated microspore culture to optimise the elements of protocol for producing doubled haploids. Microspores were isolated from inflorescences of 21 genotypes and incubated in NLN13 medium supplemented with 0.1 mg·dm –3 2,4-dichlorophenoxyacetic acids, 0.1 mg·dm –3 1-naphthyl acetic acids, 130 g·dm –3 sucrose, and 400 mg·dm –3 casein hydrolysate and its modifications. Embryoids and their groups were formed after 2–6 months, in some cases after 12 months of cultivation. Depending on the variant, the embryogenesis efficiency averaged from 0 to 4.9 embryoids or groups of embryoids per Petri dish (10 cm 3). Embryoids within the group were formed from different microspores. No significant effects of inflorescence position on the plant (branching order), sucrose, and casein hydrolysate concentration in the medium were observed. Significant advantages (p ≥ 0.05) for some genotypes were shown: 1) microspore suspension density 4·104 cells·cm –3 (5.0 embryoids per Petri dish were formed at a microspore suspension density of 4·104 cells·cm –3, 0.0 embryoids per Petri dish at a density of 8·104 cells·cm –3); 2) cultivating microspores of tetrad and early mononuclear stage (4.9 ±3.1 embryoids per Petri dish were obtained by culturing tetrads and early mononuclear microspores, while 0.6 ±0.7 embryoids per Petri dish were obtained by culturing of later developmental stages); 3) high-temperature treatment duration of five days (4.9 ±2.1 embryoids per Petri dish were obtained after five days of high-temperature treatment, 2.7 ±2.6 embryoids per Petri dish formed after two days of high-temperature treatment; 9.8 ±4.7, 10.1 ±6.1, 0.0 ±0.0 embryoids per Petri dish formed after two, five and eight days of high-temperature treatment respectively); 4) adding colchicine 0.5 mg·dm –3 to the nutrient medium for two days of high-temperature treatment, followed by medium replacement (3.3 ±2.6 embryoids per Petri dish were obtained by using a nutrient medium with colchicine, while 1.7 ±1.5 embryoids per Petri dish were obtained by culturing in the reference variant).
Towards sustainable land subsidence mitigation in Semarang and Demak, Central Java: Analysis using DPSIR Framework
Authors: Sarah Dwi , Mulyono Asep , Satriyo Nugroho Aji , Soebowo Eko , Wirabuana Taufiq
Published: March 2023

The Semarang-Demak plain has experienced intense human intervention over the last 40 years, thereby causing land subsidence. This study aims to assess long-term conditions in the study area using the drivers-pressuresstate- impacts-response (DPSIR) framework to mitigate land subsidence. Methods include analysis of land subsidence, socioeconomic, surface, and subsurface data, as well as spatial analysis. Results show that rapid population growth and economic activities are major driving forces, manifesting as pressures exerted from overexploitation of groundwater, increasing building and infrastructure loads, and decreasing non-built areas. Groundwater overexploitation reduced the artesian pressure in the 1980s, forming depression cones of the groundwater level from 5 to 30 m below mean sea level. From 1984 to the present, the constructed areas have increased more than tenfold, with Semarang City possessing the most densely built area. Based on our findings, we propose responses consisting of surface water utilization, spatial building regulation, and rigorous groundwater and land subsidence monitoring. Moreover, we encourage the strengthening of law enforcement and inter-sectoral management to ensure the successful land subsidence mitigation.
Performance of pozzolan in trickling filter for secondary treatment of urban wastewater in Tlemcen, Algeria
Authors: Hamidi Amina , Belarbi Fadila , Bouchelkia Hamid , Bouchenak Khelladi Racha M.
Published: March 2023

The research aims to study the purification performance of a local and natural material as an input or as a biological filter for treating urban domestic wastewater. For this purpose, pozzolan was used as the biofiltration support that was provided from Beni Saf located in the North-West of Algeria. Tests were carried out with a specially modified pilot unit (TE900) for wastewater treatment over a period of four months. To assess the efficiency of the treatment, two main parameters have been focused on – the height of the sprinkler filter (40 cm and 80 cm) and the flow rate (10, 16, and 25 dm 3∙h –1). Physicochemical and bacteriological analyses were carried out on raw wastewater and treated water. The obtained results show that the Beni Saf pozzolan-filled trickling filter eliminates a large fraction of the studied pollutants. The purification yields obtained are fairly encouraging; 98% for turbidity, 88% for suspended solids ( SS), 94% for chemical oxygen demand ( COD), and 98% for biological oxygen demand ( BOD 5). As for bacterial indicators, the formation of biofilms has significantly reduced bacterial activity with a percentage of over 80%. It can be concluded that the reduction of pollutant parameters clearly indicates the effectiveness of the treatment by this ecological process. Therefore, the use of local and natural materials for wastewater treatment can be a promising alternative based on sustainable environmental technologies and development.
Lead and cadmium content in wheat grain from different regions of Poland and risk analysis
Authors: Jędrzejczak Renata , Ręczajska Wiesława
Published: March 2023

The level of wheat grain contamination with lead and cadmium was determined using electrothermal atomic absorption spectrometry with Zeeman background correction (ETAAS) after microwave digestion. The obtained limits of quantification were 0.001 mg∙kg–1, for both metals. A total of 300 samples of wheat grain from agricultural regions of Poland were examined, 150 each from the two consecutive harvest years 2017 and 2018. None of the tested samples exceeded the maximum level of these metals, as specified in the European regulations. The contents of lead and cadmium in wheat grain from both years of harvest ranged from <0.001 to 0.098 mg∙kg –1 and from 0.006 to 0.098 mg∙kg –1, respectively. Despite similar ranges of these metals, the highest lead contents were two times lower than the maximum limit value, while the highest cadmium contents were close to it. As for lead, a significantly higher (p < 0.05) mean content of this metal was found in wheat grain from the 2018 harvest compared to 2017 and in the western compared to eastern regions of the country. However, the cadmium contents did not differ significantly between the two harvest years, but were significantly higher (p < 0.05) in wheat grain from the southern regions compared to northern regions of Poland. Additionally, the highest contents of cadmium, close to the maximum limit, were found in the South-West region and in the both years of harvest. The risk analysis of the occurrence of the excessive contents of toxic metals in wheat grain showed a low risk level for lead in all investigated regions, and a medium level for cadmium, in general.
Public attitude towards graywater reuse: Gaza Strip as a case study
Authors: Alkhatib Ramadan
Published: March 2023

The use of graywater in households has become increasing popular. Socio-economic aspects of graywater vary from one place to another and they need to be investigated in order to predict whether graywater use can be accepted by people. The aim of this study is to investigate the social response in the Gaza Strip, Palestine, toward the reuse of graywater in households. Results of 511 surveys among residents of the Gaza Strip revealed that about 84% of the interviewed people accepted the idea of using graywater. Knowing that installing a graywater system would cost about USD500.00 per family, people reversed their acceptance of 84% and the rejection rate reached about 90%. The situation returned back to the 84% acceptance rate when it was known that the cost paid by the resident would only be USD50.00, with the rest of the cost to be contributed by non-governmental organizations (NGOs). The study also revealed that water outage seemed to be the most compelling reason behind the feeling of having a water problem, which is encouraging for the future of graywater use because graywater can be a good alternative during times of water outage.
Evaluation of the operational effectiveness and feasibility of small-scale water supply systems in the hinterlands in Ethiopia: Case of Afar Regional State
Authors: Shumie Melese C.
Published: March 2023

Access to clean and sufficient drinking water is difficult in much of Ethiopia’s Afar Region. It is observed that many schemes in the region are non-functional. The study was conducted to overcome the observed problem in seven selected districts of the region. The study regarded hand-dug wells and roof water collection systems, which are the two most common features in the research areas. Eight hand-dug wells and sixteen roof water harvestings are purposively included in the study. All the water points are constructed by Kelem Ethiopia which is a non-governmental organisation and the foremost local organisation for the communities. As per the research survey, the average functional status of the hand-dug well schemes is 65.75% and the roof water harvesting schemes is 22.94%. The research was based on the qualitative data collected on site. The hand-dug well sites were evaluated using 10 parameters, and the roof water harvesting schemes were analysed using 12 parameters. The main non-functional aspects of the scheme are lack of community ownership, drying up of water sources, lack of maintenance and rehabilitation, poor coordination of beneficiaries and school roofs blowing off. Most schemes still require minor to major maintenance and rehabilitation. According to the research, the solutions for water supply are identified in relation to the desired objective.
The study of the local scour behaviour due to interference between abutment and two shapes of a bridge pier
Authors: Muhsen Noor A.A. , Khassaf Saleh I.
Published: March 2023

Although the complexities and irrevocable consequences associated with bridge scour have attracted researchers interest, their studies scarcely indicated the effect of a bridge pier proximity to an abutment. This research aims to measure maximum scour depth and exhibit the impact of pier-abutment scour interference based on laboratory experiments where vertical-wall abutment and two shapes of a pier (oblong and lenticular) were used at three different spacings (23.5, 16.0, 9.0 cm). The results showed an obvious increase in the scour depth ratio when increasing flow intensity, Froude number, and a decreasing flow depth. They also showed that reduced pier-abutment spacing was accompanied by increase in pier scour for both shapes while decrease in abutment scour. The maximum scour depth that caused by an oblong shape was more than a lenticular shape by about 10.8%. Furthermore, new empirical equations were derived using IBM SPSS Statistics 21 with determination coefficients of 0.969, 0.974, and 0.978 for oblong, lenticular and abutment, respectively. They showed the correlation between predicted and observed data.
Adaptive characteristics of plants in the conditions of technogenic pollution
Authors: Akhtaeva Nursulu , Boribay Elmira , Nurmakhanova Akmaral , Tynybekov Bekzat , Moldagazyyeva Zhanar
Published: March 2023

The article deals with the problems of induction of the anatomical and morphological structure of plants of different life forms under the conditions of a long-term chronic action of ionising radiation on the territory of the Northern nuclear power plant. Currently, the study and assessment of the radioecological situation on the territory of the former Semipalatinsk nuclear test site, taking into account the ecological state of natural plant and animal populations, is of particular importance. The study of the reaction of living organisms, be it plants or animals, to different doses of chronic ionising radiation makes it possible to assess and diagnose the state of environmental quality, and these organisms themselves can serve as bioindicators of pollution. On the territory of the Semipalatinsk test site, at the experimental site “Balapan”, 3 sections with meadow type of soil were studied: polluted section no. 1 – the northwestern shore of Lake Chagan, polluted section no. 2 – the north-eastern shore of Lake Chagan, and control section no. 3. For structural analysis, the study recorded the vegetative organs of plant species with an increased radiation background. It was found that when the EDR (exposure dose rate) of gamma radiation increases and the plant growth is stimulated. In the conditions of radioactive contamination, with an increase in the activity of alpha, beta and gamma radiation, plants response and changes occur in the internal structure of their vegetative organs. Such adaptive features arise under the influence of a complex of environmental factors, including radiation pollution.
The influence of fertilisation on the water-salt regime in the conditions of the Mugan-Salyan massif, Azerbaijan
Authors: Mustafayev Mustafa , Tukenova Zulfiya , Alimzhanova Mereke , Ashimuly Kazhybek , Mustafayev Farid
Published: March 2023

The article presents research data on the amount of salts in the irrigated soils of the Mughan-Salyan massif, their composition, water-salt regime, and their forecast. It was found that the soils on the territory of the massif were saline to varying degrees. In general, the area of non-saline soils in the massif is 125,650 ha, mildly – 272,070 ha, moderately – 210,560 ha, highly – 125,850 ha, very highly – 109,450 ha and saline soils – 27,520 ha. The absorbed bases in the soils of the massif were studied, and it was determined that they change depending on the amount of salts as follows: in mildly saline soils, Ca – 57.82–68.31%, Mg – 25.26–36.28%, Na – 5.49–6.43%; in moderately saline soils – 56.77–65.76%, 27.03–35.58%, 7.12–7.94%, respectively; in highly saline areas – 54.05–64.75%, 24.94–43.67% and 9.19– 14.42%. As you can see, the soils are mildly and moderately saline. The soils in the surveyed areas are saline to varying degrees (i.e., the average value of salts in the 0–100 cm layer of the soil varies between 0.25 and 1.00%). The biological product used in these soils contains a wide range of macro and microelements, humic acids, fulvic acids, amino acids, vitamins and enzymes that do not contain BioEcoGum mineral fertilisers. This biological product was used for the first time and one of the main goals was to study the improvement of water-physical properties of soils after its use. Therefore, the water-salt regime of the soils of the study area was studied on three experimental sites selected for the area, the number of irrigations for different plants, and their norms were determined taking into account the depth of groundwater in the soils and shown in tabular form. They are widely used in farms and these regions, taking into account the proposed irrigation norms and their quantity.
Effect of Tytanit on selected morphological, physiological and chemical characteristics of Lolium multiflorum dry matter
Authors: Sosnowski Jacek , Wróbel Barbara , Truba Milena
Published: March 2023

The aim of the study was the determination the effect of foliar application of growth regulator containing Ti (Tytanit®), on Lolium multiflorum morphometry, photosynthetic activity, chlorophyll content and chemical composition of dry matter. A pot experiment was carried out in a plant breeding room of Siedlce University, Poland, in 2019. The experimental units were as follows: I) control – plants sprayed with distilled water; II) plants sprayed with 0.02% Tytanit concentration; III) plants sprayed with 0.04% Tytanit concentration; IV) plants sprayed with 0.06% Tytanit concentration. The following parameters were determined: the shoots number, the number and the length of leaf blades, the length of roots, the dry weight of roots, the dry weight of plants per pot and the content of chlorophyll a and b in leaf blades. In addition, maximum and actual efficiency of the leaf photosystem, photochemical and non- photochemical quenching coefficients and the content of total protein, crude fibre, monosaccharides, crude fat, crude ash, Ca, Mg, P, K and the ratio of K/(Ca + Mg), and Ca/P in the dry matter of plants were determined. Used in controlled conditions, the regulator contributed to the growth of most morphological characteristics, improved photosynthetic activity, increased the concentration of chlorophyll a and b, and
Calculation of effective hydraulic parameters of concrete irrigation canals
Authors: Fatxulloyev Alisher , Rakhimov Qudratjon , Allayorov Davronjon , Samiev Luqmon , Otakhonov Makhsud
Published: March 2023

When taking water from pre-mountain rivers, for transferring of large amounts of river sediments, rich in mineral fertilizers, along with water to crop fields through irrigation networks requires high sediment transport capacity and deformation resistance from irrigation networks. The projecting and construction of irrigation canals with these features in the foothills requires concreting the canal. The high content of river sediments in the Sokh River (5 kg∙m –3) and the low efficiency of the Right Bank Irrigation Reservoir (10–15%) require high hydraulic efficiency of water intake canals from this system. The main challenge is to reduce costs in concreted canals and ultimately ensure technical superiority. In the research were used generally accepted research methods in hydraulics, in particular field research and consequently, mathematical analysis. Kokandsay, Kartan and Bachkir irrigation canals were accepted as the object of research, the canals were designed on the basis of the best hydraulic section, the canal side slope was taken as a variable parameter and the technical and economic efficiency was checked using computer software. As a result, it was found that the consumption of concrete raw material for 1 running meter can save 0.2–0.3 m 3, depending on the adoption of the canal side slope, the acceptance of the slope of the canal wall at values 1–1.5 will increase up to sedimentation 10%.
Genetic variation of arta populations ( Calligonum polygonoides subsp. comosum) in Egypt: Genepools for biodiversity and afforestation
Authors: Mahdy Ehab M.B. , Rizk Rehab M.
Published: March 2023

Genetic diversity manipulates a prime and vital role in the sustainable use of genetic resources. The data highlighted more insights into the genetic diversity of the arta plant ( Calligonum polygonoides subsp. comosum) populations collected from three localities, Qalabshu ( QQ), Mutubas ( MM) and Gamasa (GG), in Egypt as gene pool for biodiversity conservation and afforestation. Random amplified polymorphic DNA (RAPD) markers investigated the population pattern and structure. A total of 129-amplicons oscillated from 145 to 1505 bp and a total of 19-amplicons were specific markers with an average of nine bands for each population. The Shannon index (I) scored at an average of 0.3. The diversity ( h) oscillated from 0.11 to 0.25. The similarity matrices based on Jaccard coefficient recorded positive values. A higher correlation (r = 0.83) was between the combined Qalabshu (QQ) and Mutubas (MM) matrices using the Mantel test with 1,000 permutations. This species has higher adaptability for their regions. This gene pool is a valuable reservoir for enriching genetic diversity and provides basal information for the biodiversity conservation of a dominant species. The dominant species can be utilised in afforestation in the same region or another region which has the same environmental conditions.
Influence of the manner of water discharge from dam reservoirs on downstream water quality
Authors: Cieśla Maksymilian , Gruca-Rokosz Renata
Published: March 2023

The study was carried out in the area of three dam reservoirs: Blizne and Maziarnia (Voivodeship of Podkarpackie) and Nielisz (Voivodeship of Lublin). The main parameter differentiating the reservoirs was the water retention time and the manner of water discharge from the reservoirs. Three test sites were designated in the area of each reservoir: in the river zone of the reservoir, in the central part of the reservoir, and near the reservoir dam. At these sites, the concentrations of suspended sediment in the water and the content of organic matter in it, the concentrations of total phosphorus and total nitrogen, as well as chlorophyll a were monitored. In addition, two control sites were established: on the river upstream of the reservoir and on the river downstream of the dam, respectively. At these points, the concentrations of suspended sediments in the water and their organic matter content were recorded. The obtained results of the study and multivariate analysis of the data showed that morphometric parameters (including water retention time) of reservoirs and the method of water discharge influence water quality in downstream rivers. It was found that by using lower discharge and ensuring a sufficiently long retention time of water in the reservoir, it is possible to effectively limit the negative aspects of hydrotechnical structures’ impact on the natural environment. In practice, the observed relationships may constitute an important and missing link in the aspect of minimising undesirable side effects of this type of hydrotechnical objects.
Screening of sweet and grain sorghum genotypes for green biomass production in different regions of Kazakhstan
Authors: Zhapayev Rauan , Toderich Kristina , Kunypiyaeva Gulya , Kurmanbayeva Meruyert , Mustafayev Mustafa , Ospanbayev Zhumagali , Omarova Aiman , Kusmangazinov Adil
Published: March 2023

As the impact of global climate change increases, the interaction of biotic and abiotic stresses increasingly threatens current agricultural practices. The most effective solution to the problem of climate change and a decrease in the amount of atmospheric precipitation is planting extremely drought-resistant and high-yielding crops. Sorghum can grow in harsh conditions such as salinity, drought and limited nutrients, also it is an important part of the diet in many countries. Sorghum can be introduced in many zones of Kazakhstan. Plant height and yield of green plant biomass of 16 sorghum samples in arid conditions were determined based on a set of agrobiological characteristics for field screening. The height of the studied samples of grain sorghum was 0.47 ±0.03 m, and the height of sweet sorghum was much longer, reaching up to 2.88 ±0.12 m. Also, there was a strong difference in green biomass in cultivated areas under different soil and climatic conditions, the green biomass of sweet sorghum was 3.0 Mg∙ha –1, and in grain sorghum, it reached up to 57.4 Mg∙ha –1. Based on the data of the field assessment for various soil and climatic conditions, the following samples were identified for introduction into production: samples of sweet sorghum for irrigated and rainfed lands of the Almaty Region and in the conditions of non-irrigation agriculture of the Aktobe Region – a promising line ICSV 93046. For non-irrigation agriculture of the Akmola Region, genotypes of sweet and grain sorghum are ‘Chaika’, ‘Kinelskoe 4’ and ‘Volzhskoe 44’.
The impact of water quality on the availability of phytoplankton and growth of Litopenaeus vannamei
Authors: Musa Muhammad , Thoyibah Auliarifka A. , Puspitaningtyas Dyah A. , Arsad Sulastri , Mahmudi Mohammad , Lusiana Evellin D. , Maftuch Maftuch , Huda Agus S.
Published: March 2023

This research analysed the availability of phytoplankton and the growth rate of Vannamei shrimp in relation to water quality changes. The research was carried out in February–March 2021 for a half cycle of shrimp cultivation in two ponds of the Brackish Water Fish Culture Probolinggo Laboratory in Probolinggo, East Java, Indonesia. The research used a descriptive method and included a survey. Sampling was made every two weeks for two months. Nine parameters were measured and ten shrimps were taken for a specific growth rate ( SGR) measurement once per sampling. Data were analysed using the principal component analysis (PCA) and canonical correspondence analysis (CCA). Secondary data of water quality were added for the PCA. The results show that the phytoplankton found in the first pond consisted of Chlorophyta, Chrysophyta, and Cyanophyta, whereas the phytoplankton in the other pond included Chlorophyta, Chrysophyta, Cyanophyta, and Dinophyta. The abundance of phytoplankton ranged from 12–80∙10 3 cell∙cm –3, which indicated eutrophic waters. The PCA demonstrated that pH, nitrate, and total organic matter (TOM) significantly influenced phytoplankton abundance in the pond. In addition, water quality parameters, such as temperature, transparency, salinity, nitrite and phosphate levels, were tolerable in both ponds for the growth of shrimps. However, the level of pH was lower than the aquaculture quality standard, whereas those of nitrate, ammonia, and TOM were higher. The growth rate of Vannamei shrimp increased by 0.76–7.34%∙day –1.
Drug resistance profile and detection of genes responsible for methicillin resistance in Staphylococcus aureus isolated from municipal waste
Authors: Wolny-Koładka Katarzyna
Published: March 2023

Currently, we are facing the ever-increasing phenomenon of bacteria being resistant to antibiotics. It is the consequence of excessive and incorrect use of drugs. The phenomenon is a global problem affecting bacteria both in their hospital population and in the natural environment. Municipal waste is an environment conducive to the development of microorganisms, therefore it contains various groups of bacteria, including drug-resistant staphylococci. The aim of the study was to identify species of bacteria, determine their antibiotic resistance, and assess the occurrence of genes responsible for methicillin resistance in Staphylococcus aureus isolated from mixed municipal waste. Strains were isolated by Koch’s serial dilution method with the use of microbiological media. Species were identified using the MALDI TOF-MS technique, whereas the drug resistance profile was determined by disk diffusion and molecular PCR methods. 250 isolates of S. aureus were collected. The highest resistance found was to cefoxitin, erythromycin and tetracycline. Among the bacteria collected, resistance to 1, 2, 3 or 4 antibiotics at the same time was the most common, with a maximum of 10. Additionally, 45 (18%) MDR (multidrug-resistant) isolates were detected. Methicillin resistance was found by the disk diffusion test in 60 (24%) strains, while the mecA gene was detected in as many as 180 (72%) isolates.
The assessment of water quality and human health risk from pollution of chosen heavy metals in the Upstream Citarum River, Indonesia
Authors: Fahimah Nurul , Salami Indah R.S. , Oginawati Katharina , Susetyo Septian H. , Tambun Agam , Ardiwinata Asep N. , Sukarjo Sukarjo
Published: March 2023

This study explains water quality in terms of seven heavy metals in the Upstream Citarum River and analyses human health risk (non-carcinogenic risk) for adults and children. Water samples were collected from five sampling locations along the Upstream Citarum River, i.e. from Majalaya Sub-District to Dayeuhkolot Sub-District. The contents of heavy metals were analysed by the Atomic Absorption Spectrometer (AAS) variant 240 FS. The results of the analysis showed that the pollution index value, which was categorised as slightly polluted from the highest to the lowest value, was as follows: location 4 (4.220) > location 1 (3.764) > location 2 (3.219) > location 5 (2.967) > location 3 (2.800). Values of the hazard index ( HI) for adults and children were as follows: Pb > Cr > Cd > Zn > Ni > Co > Cu. Pb and Cr have HI values greater than 1. This indicates that these metals can have a negative impact on public health. The HI in the ingestion pathway was greater than that of the dermal pathway, and the HI value for children was greater than that for adults. Further research is needed regarding the health risks from groundwater around the area which is used directly by the community because river water and groundwater systems are interconnected through streambeds.
Space-time quantification of aboveground net primary productivity service supply capacity in high Andean bofedales using remote sensors
Authors: Cano Deyvis , Crispin Astrid , Custodio María , Chanamé Fernán , Peñaloza Richard , Pizarro Samuel
Published: March 2023

The aboveground net primary productivity ( ANPP) of bofedales is one of the most important indicators for the provision of ecosystem services in the high Andean areas. In the case of bofedales, the evaluation of the ANPP supply capacity as a service on a spatial and temporal scale through remote sensing has been little addressed. The capacity, intra and interannual, to provide the ANPP of the high Andean wetlands was quantified at a spatial and temporal level through remote sensing. The normalized difference vegetation index ( NDVI) of the MODIS sensor was used according to the Monteith model (1972), product of the incident photosynthetically active radiation, fraction of the absorbed radiation, and the efficiency of using the radiation of the calibrated vegetation with dry matter sampling in the field. Results show an ANPP prediction R 2 of 0.52 (p < 0.05), with no significant spatial difference between field samples. When applying the model, the intra-annual temporary ANPP supply capacity presents a maximum average of 160.54 kg DM·ha –1·month –1 in the rainy season (December–May) and a maximum average of 81.17 kg DM·ha –1·month –1 in the dry season (June–October). In 2003–2020, the interannual temporary capacity presented values of 1100–1700 kg DM·ha –1·year –1. This makes it possible not to affect the sustainability of the wetlands and prevent their depletion and degradation. Understanding the ANPP supply capacity of bofedales can favour the efficient use of the resource and indirectly benefit its conservation.
An empirical model of rainfall intensity as a function of rainfall duration and probability of occurrence
Authors: Harisuseno Donny , Prasetyorini Linda , Fidari Jadfan S. , Chandrasasi Dian
Published: March 2023

Rainfall is one of the main components of the hydrologic cycle; thus, the availability of accurate rainfall data is fundamental for designing and operating water resources systems and infrastructure. This study aims to develop an empirical model of rainfall intensity ( It,p) as a function of its probability ( p) and duration ( t). In 1999–2020, data on the hourly duration of rainfall were collected from automatic rainfall recorder (ARR) gauges. The empirical model has been developed using a statistical approach based on duration ( t) and probability ( p), and subsequently they have been validated with those obtained from ARR data. The resulting model demonstrates good performance compared with other empirical formulas (Sherman and Ishiguro) as indicated by the percent bias ( PBIAS) values (2.35–3.17), ratio of the RMSE (root mean square error) between simulated and observed values to the standard deviation of the observations ( RSR, 0.028–0.031), Nash–Sutcliffe efficiency ( NSE, 0.905–0.996), and index of agreement (d, 0.96–0.98) which classified in the rating of “very good” in model performance. The reliability of the estimated intensity based on the empirical model shows a tendency to decrease as duration ( t) increases, and a good accuracy mainly for the rainfall intensity for shorter periods (1-, 2-, and 3-hours), whereas low accuracy for long rainfall periods. The study found that the empirical model exhibits a reliable estimate for rainfall intensity with small recurrence intervals ( Tr) 2-, 5-, 10-, and a 20-year interval and for a shorter duration ( t). Validation results confirm that the rainfall intensity model shows good performance; thus, it could be used as a reliable instrument to estimate rainfall intensity in the study area.
Determination of groundwater recharge–discharge zone to support water resources in Galur–Lendah area, Indonesia
Authors: R.A. T. Listyani , Prabowo Ignatius A. , Suparta Wayan
Published: March 2023

The impact of changes in regional development along with the construction of Yogyakarta International Airport in Kulon Progo Regency may affect land use changes as the activities of the surrounding population. Galur– Lendah area, which is located near the city of Yogyakarta and acts as the entrance to Kulon Progo, will also develop. Along with these developments, the determination of the groundwater recharge–discharge area is needed to ensure the availability of groundwater at this site. The purpose of this study was to determine the zonation of groundwater recharge–discharge areas to support the availability of groundwater. The method of research is a spatial analysis using a geographic information system (GIS) based on ratings and weighting values for six parameters, including slope, rainfall, groundwater table depth, soil type, rock permeability, and land use. The field hydrogeological was also conducted to find out rock permeability and groundwater quality (pH, EC, TDS). The results showed that areas with potential for groundwater recharge were in the central and northeastern parts of the study area and the discharge zones in the north and south were with potential infiltration values of 26–43 and 44–59, respectively. However, the recharge area can still function as a discharge zone.
Ecological risk assessment of heavy metals in the Sidi Boughaba Lake, Morocco
Authors: Najy Mohamed , Talbi Fatima Z. , Ech-Chafay Hassan , Akkaoui Omar , Lachhab Mohamed , Achhar Abderrahman , Nouayti Nordine , Belghyti Driss
Published: March 2023

The goal of the research was to evaluate the heavy metal detection and potential ecological risks in lake’s water. Geological formations consisting essentially of sandstone and quaternary marine or dune sands characterize the study area. With a climate of the Mediterranean type winters are mild and humid, whereas summers hot and dry. At the analysis center of the Faculty of Sciences, the monitoring of ETMs is carried out by ICP-MS, the processing of data and the validation of the analysis method have been drafted according to the NF T 90-120 standard applicable to the analysis in a laboratory. The analysis covers concentrations of heavy metals, which include Cu, Zn, Mn, Fe, Pb and As, in the water. Pollution load index ( PLI) values were above one (>1) which indicates progressive deterioration of the water quality. However, contamination factor ( CF) values of Pb and Cu, ranging from 8.31 to 15.68 and from 5.5 to 28.05 respectively, show that the studied water remains under a strong impact by Pb and Cu. Considering the severity of the ecological risk ( Er) for a single metal, the descending order of contaminants is Cu > Pb > Mn > Fe > Zn. In relation to the total ecological risk index ( RI), water from the lake shows low to considerable ecological risk.
Hydrochemical conditions of three lakes located in the West Pomeranian region in the annual cycle
Authors: Tórz Agnieszka , Bonisławska Małgorzata , Nędzarek Arkadiusz , Rybczyk Agnieszka , Tański Adam
Published: March 2023

The objective of the study was to trace the variability of the hydrochemical conditions in three lakes of the West Pomeranian Voivodeship (Poland) – Starzyca, Maszewskie and Nowogardzkie in the annual cycle. The research was done in 2018–2019, and samples for analysis were collected 4 times a year. All analyses were performed applying standard methods. Such hydrochemical indices were determined as dissolved oxygen, chemical oxygen demand, content of orthophosphates, total phosphorus, nitrite, nitrate, ammonium, chlorophyll a and iron. The study showed that all lakes in the research cycle were characterised by a polymictic type of water mixing, and the trophic level, based on the adopted criteria, indicated advanced eutrophy, which may also be caused by anthropogenic pressure. Oxygen conditions characterised by deoxidation of the waters in the bottom layer in the spring and summer seasons, and clear oxygenation in the surface water layer (in Lake Maszewskie reaching even 188.5% in the spring) confirm the significant advancement of the eutrophication process. The supply of phosphorus and nitrogen in spring from pelagic waters in the waters of the examined lakes influences concentrations of chlorophyll a in the summer. The influence of “internal supply” (bottom waters and bottom sediments) on the amount of nutrients available for autotrophs is clearly visible in the analysed lakes – an increase in nitrogen and mineral phosphorus concentrations in relation to surface waters was observed in the bottom layer.
Protocol for Preparing for Competitions in Different Time Zones
Authors: Siminiceanu Andreea-Elena
Published: March 2023

The pandemic affected all branches of the country’s economy, all categories of services, but also performance sports. With it, competitions appeared postponed without a precise date or even totally canceled. In performance sports, a major role was played by the uncertainty of the biggest competition in an athlete’s life, the Tokyo competition.

It was a great challenge for the coach to organize his training periods, so as to bring the athletes in the best shape, but also for the doctors and the medical staff to work on an adequate recovery, to support the physical effort through the most well-rated supplements, always adapting to changes and not least for athletes to resist physically and mentally and to find the motivation to continue the routine to achieve their goal, that of reaching Tokyo.
Complications of Ethanolic Withdrawal in Hospitalized Patients
Authors: Dimofte Cristina , Moroianu Lavinia-Alexandra , Curis Cecilia , Ardeleanu Valeriu , Chirila Sergiu , Moroianu Marius
Published: March 2023

Chronic alcohol consumption, also called alcoholism, is a chronic disease characterized by compulsive alcohol consumption, loss of control over alcohol consumption and a negative emotional state in the absence/lack of consumption. Statistics show that the incidence of alcohol consumption in the adult population has been increasing during the isolation due to the pandemic. It is fre-quently associated with the consumption of other substances, in which case mortality is higher than in the case of single alcohol consumption. The patterns of alcohol consumption are varied, being related to a series of demographic, social, psychological and behavioral variables. The most worrying aspect of alcohol consumption is represented by the increase in the frequency of this type of addiction among teenagers and young people. It should also be mentioned that there is an increase in the incidence in females and there are new variables related to the context of consumption: increased boredom, alcohol consumption for the purpose of relaxation and alcohol consumption as an activity in the absence of an entourage. During the pandemic, there was also the myth that alcohol consumption would be the basis for reducing the risk of contamination with the SARS CoV 2 virus, an aspect disproved by specialist studies. The increased consumption of alcohol during the pandemic could be correlated with anxiety and depression determined by the fear of illness and depression due to the loss of the job, the lack of social relations or online education, being unanimously accepted that alcohol has an anxiolytic role. Regarding ethanolic withdrawal (EW) symptoms, studies show that approximately 50% of patients with chronic alcohol consumption will develop withdrawal symptoms when they reduce the quantity of alcohol or stop drinking alcohol.
Modelling of Impulse Functions of Ultrasonic Sensors When Tilt Angle of Reflecting Surface is Changed
Authors: Madola Vladimír , Cviklovič Vladimír , Rokosz Krzysztof
Published: March 2023

Increasing the accuracy of position measurement is an intensively addressed issue in engineering practice. Indirect methods provide satisfactory distance information. For more accurate identification of surface geometry or tilt, systems based on image processing are frequently employed, however, these are more expensive in contrast to devices operating on the basis of acoustic principle. This paper deals with the modelling of the impulse functions of ultrasonic sensors under known geometrical conditions of their distribution. The reflecting surface is a metallic surface. Based on the results, a statistically significant non-linear correlation between the complex integral of the impulse function and the front time of the transient characteristic is shown. The change from the parallel to the perpendicular case of the longitudinal axis of ultrasonic transducer distribution due to the change in the tilt angle of reflected surface is also included in the study. The interval of change in the tilt angle of reflecting surface was from 0° to 30°.
Theoretical and Experimental Investigations of the Second Serve of Root Crop Pile Components
Authors: Baranovsky Viktor , Jobbágy Ján , Marynenko Serhii , Pankiv Maria , Komar Roman
Published: March 2023

Fodder beet root crops in the autumn-winter period are one of the main types of juicy fodder for dairy livestock. Mechanized harvesting of fodder beet roots is a rather complex and energy-consuming technological process. The criteria that meet the requirements for the operation of root-harvesting machines are first of all the quality of digging and separation of impurities from root crops. The purpose of the work was improvement of the process of mechanized digging of fodder beets by an adapted digging-transport combined working body based on analytical and empirical research of the second feeds of constituent components of the dug pile of root crops. Based on the results of experimental studies, empirical regression equations were developed, which functionally describe the change in the second supply of the excavated components of the pile of root crops, depending on the speed of the root-harvesting machine and the rotation frequency of the drive shaft of the adapted digging-transport combined working body. Based on the comparative analysis, it was found that the discrepancy between the theoretical and approximated experimental values of second feeds is 5–10%. The results of the study are a further step in improving the method of optimizing the parameters of working bodies for digging and cleaning root crops from impurities.
Increasing the Managerial Performance of Romanian Museums with the Help of Stakeholders
Authors: Ilie Cosmin
Published: March 2023

Museum professionals worldwide make considerable efforts to maintain the integrity of the cultural institutions they manage, as organizations that collect, research, conserve, and exhibit, as well as in their educational and social purpose, in a concerted effort to make museums more performing, more popular, more attractive and more competitive. In this context, many questions arise about how a performing museum looks like in the current social, political, and cultural contexts, how the performance of a museum can be evaluated, and, especially, how the managerial performance of museums can be increased. At the center of these concerns, the issue of stakeholders, the partnerships with them, the strategies for their optimal approach, as well as the impact of such initiatives on increasing the managerial performance of museums, occupy an essential role. One of the objectives of this research is to emphasize the need to use new strategies, methods, and tools in an attempt to make museum institutions perform better from a managerial point of view. To verify the perception of such initiatives, two practical applications were carried out: quantitative research, which analyzes the perception of internal stakeholders (museum staff) on the involvement of external stakeholders in the process of improving museum services, and qualitative research, which sought to capture the perception of museum managers in Romania regarding partnerships with stakeholders and their role in increasing the managerial performance of the institution. The results show that museums are becoming increasingly aware of the importance of stakeholders with an active interest in museum practices and policies and optimized solutions regarding the institutional and organizational transformation of museum institutions in Romania are taking shape, to rebuild the way museums interact with relevant stakeholders.