bluuebunny/crossref_metadata_2025 huggingface dataset:
Modelling the Effects of Dam Reservoir Backwater Fluctuations on the Hydrodynamics of a Small Mountain Stream
Authors: Liro Maciej , Nones Michael , Mikuś Paweł , Plesiński Karol
Published: October 2022

The water depth and flow velocity of a river may be temporarily disturbed by the water level fluctuations connected with the operation of artificial dam reservoirs located downstream (so-called backwater fluctuations (BF)). In this research, we use the two-dimensional hydrodynamic model iRIC MFlow_02 to quantify the effects of BF on the lowermost section (ca. 1.5-km length) of a small (channel width ≤ 20 m) mountain stream, the Smolnik Stream, which flows into the Rożnów Dam Reservoir, in Southern Poland. To reproduce the hydrological conditions generally observed in the stream, six scenarios were simulated, considering three steady flow discharges at the inlet, with recurrence intervals of 1 year (1.8 m3 s−1, small flood), 2 years (24.5 m3 s−1; medium flood), and 20 years (89.5 m3 s−1; large flood), and two reservoir levels at the outlet: 265 m a.s.l. (normal reservoir water level) and 270 m a.s.l. (maximum reservoir water level). In these simulations, sediment transport and morphodynamics are not considered. The average modelled water depth was increased by backwater fluctuation in the channel, from 28% (from 1.62 m vs. 2.07 m) during a small flood, up to 59% (from 3.46 m to 5.50 m) during a large flood. Contrastingly, the average modelled flow velocity was decreased in the channel (from −8% 0.52 m s−1 vs. 0.47 m s−1) during a small flood to −78% (0.49 m s−1 vs. 0.11 m s−1) during a large flood. Our results demonstrate that backwater fluctuations substantially disturb the hydrodynamics of the studied stream, which is interpreted as a triggering factor of the previously documented alterations in its sedimentology, morphology, and riparian vegetation pattern.
Antimicrobial Resistant Bacteria in Shrimp and Shrimp Farms of Bangladesh
Authors: Khan Murshida , Paul Sulav Indra , Rahman Md. Mahbubur , Lively Julie Anderson
Published: October 2022

The purpose of this study was to investigate the presence of pathogenic bacteria, specifically Escherichia coli and Salmonella and Vibrio species, and their antimicrobial resistance in shrimp aquaculture facilities of Bagerhat (Bangladesh). Sediment samples were collected from both Penaeus monodon and Macrobrachium rosenbergii farms and shrimp samples from the Macrobrachium rosenbergii facility. The abovementioned bacteria were not found, but five Enterobacterales (Proteus penneri, Proteus alimentorum, Morganella morganii, Enterobacter hormaechei subsp. xiangfangensis and Plesiomonas shigelloides) were detected. This is the first documented case of Enterobacter hormaechei subsp. xiangfangensis in a shrimp farm. Nine antibiotics—ampicillin, gentamicin, chloramphenicol, oxytetracycline, nitrofurantoin, levofloxacin, ciprofloxacin, azithromycin, and co-trimoxazole—were selected for antibiotic resistance testing, and the majority (88.9%) had at least one isolate that was resistant. Across sources, 78.0% of isolates were resistant to at least one antimicrobial, and multidrug resistance was also detected in 29.3% of all isolates. Despite the low number of samples analyzed, nine in total, the results of this experiment emphasize that shrimp farms in Bagerhat may have a problem with antimicrobial-resistant bacteria. This could have negative impacts on shrimp quality and consumers’ health.
Research Trends in Groundwater and Stable Isotopes
Authors: Carrión-Mero Paúl , Montalván-Burbano Néstor , Herrera-Franco Gricelda , Domínguez-Granda Luis , Bravo-Montero Lady , Morante-Carballo Fernando
Published: October 2022

Groundwater is essential in the management of water resources globally. The water quality of aquifers is affected by climate change and population growth, aspects that can be addressed with stable isotope analysis. This study aims to carry out an analysis of the scientific information related to groundwater and stable isotopes (GSI) using scientific databases (Scopus and Web of Science) to evaluate the intellectual structure of the subject and the emerging research lines. The methodology includes: (i) topic search selection, (ii) tools in databases processing, (iii) bibliometric analysis, and (iv) review by clustering technique. The results showed that the scientific production of GSI can be addressed through three evolution periods: I (1969–1990), II (1991–2005), and III (2006–2021). Periods I and II did not significantly contribute to publications because, in the past, most of the student’s thesis (M.Sc. and Ph.D) consisted of writing a report that summarizes their works. Therefore, the researcher was not obliged to publish their results in a professional journal. Finally, the third period showed exponential growth, representing 82.34% of the total publications in this theme because, in the last years, institutions require at least one scientific article depending on the country and university, in order to graduate with an M.Sc. and PhD. Finally, the contribution of this study is reflected in the recognition of new research lines and their applicability by the knowledge of recharge sources, environmental aspects, infiltration, knowledge of the aquifer-meteoric water system, and groundwater-superficial water interaction. These aspects offer the possibility of analyzing integrated water resources management at the watershed or river-aquifer systems level.
A Simplified Analytical Method to Predict Shallow Landslides Induced by Rainfall in Unsaturated Soils
Authors: Troncone Antonello , Pugliese Luigi , Conte Enrico
Published: October 2022

In order to assess slope stability owing to rainfall, the availability of an effective and simple-to-use methodology, relating directly rain to eventual landslide triggering, is undoubtedly useful. To this purpose, a simplified method aimed to the prediction of rainfall-induced shallow landslides in unsaturated soils is proposed in the present study. This method takes advantage of some closed-form solutions to evaluate the change in pore pressure due to infiltration of a rainfall characterized by a given intensity and duration, and the simple scheme of infinite slope to calculate a threshold for the change in pore pressure when the slope is under limit conditions. Particularly, using the present approach, a critical curve can be defined to establish the rainfall events that can trigger a failure process at a given depth, where suction before rainfall is known. The proposed method appears promising from an engineering viewpoint, since it is simple to use and requires few parameters as input data. In addition, these parameters can be determined from conventional geotechnical tests. The validity of the proposed approach is corroborated by some comparisons with the results of well-documented case studies.
Laboratory Experiments to Assess the Effect of Chlorella on Turbidity Estimation
Authors: Zhang Wenxiang , Zhang Dan , Shi Benwei , Zhao Zhonghao , Sun Jianxiong , Wang Yujue , Wang Xing , Lv Yang , Li Yue , Liu Youcai
Published: October 2022

Turbidity is an important parameter in monitoring water quality, and thus attracts significant attention. Changes in the various components and constituent elements of water directly affect turbidity measurements. The turbidity of water is generally quantified by measuring the absorbance or scattering characteristics of substances suspended in it. The complex composition of environmental water bodies complicates the determination of factors influencing their turbidity. Controlled experiments that quantitatively analyze the effect of a single factor on the measurement of turbidity in the laboratory are an important means to improve the accuracy of turbidity assessment. Properties of suspended materials in a water column that may affect its measured turbidity include the concentration of algae, particle size, and the color of soluble substances, etc. The laboratory experiments reported here used Chlorella as an example to investigate the effect of algal concentration on turbidity measurement. The results are as follows. When the turbidity is low (100 NTU), the average relative error between the theoretical and practical absorbance is about 37.52%, which decreases to 19.20% at 100–200 NTU and 5.16% at 200–400 NTU. The characteristic spectral bands sensitive to turbidity (680 nm) and Chlorella (240 nm) were selected, and the theoretical and practical turbidity results were analyzed. The average relative errors of mixed liquids of less than 100, 100–200, and 200–400 NTU are 65.07%, 34.18%, and 3.95%, respectively. Therefore, the concentration of Chlorella significantly affects the measured turbidity, and results in a more complex effect at low turbidity (<100 NTU). Combining the analysis of absorbance peak values and characteristic spectral bands, we can assess the turbidity changes in different components, and through calibration, information regarding the concentration and variation of different components in water bodies can be obtained. The results of this research could improve the accuracy of on-site measurement of the concentrations of different components suspended in water, and also facilitate the development of new turbidity sensors.
The Optimal Sine Pulse Frequency of Pulse Hydraulic Fracturing for Reservoir Stimulation
Authors: Li Heng , Huang Bingxiang , Xu Hanhua
Published: October 2022

Pulse hydraulic fracturing (PHF) is a key technique for reservoir stimulation. PHF can well accelerate the rupture of rock. However, the supercharging mechanism of PHF is not fully understood. The main reason is that the pressure distribution and its variation, especially the peak pressure characteristics, are unclear inside the pipe and fissure. The present research focuses on the sine pulse applied at the inlet of a pipe or fracture to reveal the variation regularity of peak pressure with the pulse frequency, amplitude, pipe length, diameter and wave speed. First, the weakly compressible Navier–Stokes equations were developed to simulate the variation of fluid pressure. The computation codes were developed using the MacCormack method validated by the existing experimental data. Then, the sine pulse effect was studied inside the pipe and fissure. Last, a new frequency model was built to describe the relationship between the optimal pulse frequency, wave speed and pipe length. The results show that there is a family of frequencies at which the peak pressure of the endpoint can be significantly enhanced and that these frequencies are the optimal pulse frequency. It is found that the optimal pulse frequency depends on the pipe or fissure length and wave speed. At the optimal pulse frequency, the peak pressure at the endpoint can be increased by 100% or more, and the cavitation phenomenon occurs. However, the peak pressure decreases when with the decrease in the pipe diameter and fissure departure due to the friction drag effect of the wall. These new landmark findings are very important for the PHF technique. In addition, a new universal frequency model is built to predict the optimal sine pulse frequency. The present research shows the variation regularity of the fluid pressure inside the pipe and develops a sine frequency-controlled method, providing a potential guide for reservoir stimulation.
Spatial Analysis of Groundwater Abstraction and Land Subsidence for Planning the Piped Water Supply in Jakarta, Indonesia
Authors: Taftazani Riza , Kazama Shinobu , Takizawa Satoshi
Published: October 2022

Although the special region of Jakarta Province (DKI Jakarta), Indonesia, has a large population of 10.9 million, piped water coverage remains at only 64%. Therefore, excessive groundwater abstraction has caused serious land subsidence over the last few decades. This study proposed the priority areas for piped water supply extension to alleviate the adverse effects of groundwater over-abstraction in DKI Jakarta. Water consumption and multilayer analyses (e.g., geology, groundwater abstraction, groundwater level, piped water coverage, and groundwater quality) were carried out to determine the priority areas for piped water development. Based on three parameters, namely the water demand–supply gap, land subsidence, and groundwater quality, the northern and western regions of Jakarta were selected as the priority areas for piped water development, followed by the southern and eastern regions. The demand for piped water by the population in the abovementioned priority areas is estimated to be 462,211 m3/d, while the total water demand of Jakarta is 1,878,899 m3/d, which is greater than the supply capacity of 1,747,440 m3/d from the existing water treatment plants. Therefore, the areas for controlled groundwater abstraction were also selected to augment the shortfall of the piped water supply capacity.
Experimental Investigation on Water Seepage through Transparent Synthetic Rough-Walled Fractures
Authors: Ranjbar Ali , Cherubini Claudia , Pastore Nicola
Published: October 2022

One of the impacts of climate changes nowadays is the increase in the frequency of high-intensity rainfall events alternating with extreme dry periods, which affect the components of the hydrologic cycle, such as runoff, infiltration, and aquifer recharge. Several experimental investigations and theoretical studies have demonstrated that infiltration flow in fractured media can develop along preferential pathways. However, the prediction of infiltration phenomena in fractured media still remains an open issue. This, together with erratic rainfall patterns due to climate changes, affects the prediction of aquifer recharge and contaminant transport in fractured aquifers. The present work contributes to reducing this research gap by means of experimental investigation and forecast analysis, with a focus on the geometrical properties of single fractures and their influence on flow patterns. Several fracture surfaces based on different fractal dimensions, standard deviations, and mismatch lengths were designed using the SynFrac model and were generated by 3D printing technology. The results revealed that the fracture’s fractal dimension has a significant impact on the number of flow paths, while the fracture inclination only increases the number of intermediate preferential channels, and, hence, modifies the flow rate distribution over the fracture outlet. Additionally, the change in the inclination angle of the dry fracture from 55 to 65 degrees resulted in an 8% reduction in the mean width of first flow path. A sensitivity analysis using an M5 tree indicates that there is a linear relationship between flow rate and the exponential form of the fractal dimension. The location of flow channels is a function of fracture fractal dimension, and the influence of mismatch length on their location is negligible. Finally, an accurate prediction algorithm with a Nash value of 0.81 was developed using Wavelet transform in order to estimate the time series of periodic flow rates over the fracture outlet.
Potentials of Light Electric Vehicles for Climate Protection by Substituting Passenger Car Trips
Authors: Ehrenberger Simone , Dasgupta Isheeka , Brost Mascha , Gebhardt Laura , Seiffert Robert
Published: October 2022

For the transformation of the mobility sector, small and light electric vehicles (LEV) show great promise, owing to their efficiency and low vehicle weight resulting in low energy consumption and lower greenhouse gas emissions per driven kilometer. The presented study focuses on the theoretical potential of substitutability of passenger car trips in Germany by varied LEVs based on the “Mobilität in Deutschland 2017” (“Mobility in Germany 2017”) dataset, for the year 2030. A detailed approach for identifying substitutable car trips was developed, reflecting age, trip purpose, number of passengers, and other decision criteria. By conducting a life cycle assessment of the considered LEVs and passenger cars, potential emission savings were analyzed. In the considered baseline scenario, it is found that emissions could be reduced by 44 % with 50% of passenger car mileage being substituted by LEVs. This study, thereby, gives way to further research on LEVs, and would urge both policy makers and general users to steer towards comprehensive measures that encourage a switch from cars to LEVs.
Family Care Relationships in Reproductive Justice
Authors: Miwa Eriko , Shoji Erika , Nakazawa Eisuke , Akabayashi Akira
Published: October 2022

The Roe v. Wade case, which legally supported abortion in the U.S., was overturned in 2022, and the international conversation about reproductive justice gained momentum as a result. Reproductive justice is a concept that advocates reproductive freedom (the freedom to have/not have children and the freedom to raise children in a healthy environment) for all couples and individuals. This paper introduces the family care relationship in reproductive justice and presents a concept of reproductive justice. By incorporating family care relationships in the concept of reproduction, the complexity and uniqueness of the reproductive choice process are preserved. Family care relationships are well suited for focusing on family-centered societies and the processes leading to abortion care, and autonomous decision-making in reproductive choice can be strengthened. It is important to explore appropriate support methods from the dynamism of the caring network, advocate for positive freedom, and settle the decision-making power in a moderated position, even with some abandonment of individualism.
The Ways for Bi on Pt to Enhance Formic Acid Oxidation
Authors: Lee Hyein , Kim Young Jun , Sohn Youngku , Rhee Choong Kyun
Published: October 2022

This work presents a correlation between the behavior of formic acid oxidation (FAO) on various Bi-modified Pt(poly) disk electrodes and their morphologies observed on Bi-modified Pt(111) disk electrodes using electrochemical scanning tunneling microscopy (EC-STM) to understand the effects of Bi on Pt. To distinguish the FAO activities of Bi on Pt and plain Pt around Bi, additional Pt was intentionally deposited using two different routes: direct route and iodine route. In direct route, Pt was directly deposited on Bi islands and plain Pt sites around Bi islands, while in iodine route, Pt was exclusively deposited on Bi islands by protecting plain Pt sites with adsorbed iodine. Thus, a comparison of FAO performances on the two Bi-modified Pt electrodes with additional Pt (deposited in the different ways) disclosed a difference in FAO performances on plain Pt sites and Bi islands. When Bi coverage was ~0.04, the Bi deposits were scattered Bi islands enhancing FAO on Pt(poly). The additional Pt deposits using direct route increased FAO efficiency, while the ones using iodine route slightly decreased FAO current. The EC-STM observations indicated that Pt deposits around Bi islands, not on Bi islands, were responsible for the FAO current increase on Bi-modified Pt(poly). The FAO efficiency on Bi-modified Pt(poly) with a Bi coverage of ~0.25 increased by a factor of 2. However, the additional Pt deposits using the two Pt deposition routes notably decreased the FAO current. The dependency of FAO on Bi coverage was discussed in terms of electronic effect and ensemble effect.
Synthesis of Silver Nanoparticles using Pulse Electrolysis in 1-n-butyl-3-methylimidazolium Chloride Ionic Liquid
Authors: Jang Jeonggeun , Kim Jihee , Lee Churl Kyoung , Kwon Kyungjung
Published: October 2022

Ionic liquids are considered as a promising, alternative solvent for the electrochemical synthesis of metals because of their high thermal and chemical stability, relatively high ionic conductivity, and wide electrochemical window. In particular, their wide electrochemical window enables the electrodeposition of metals without any side reaction of electrolytes such as hydrogen evolution. The electrodeposition of silver is conducted in 1-n-butyl-3-methylimidazolium chloride ([C4mim]Cl) ionic liquid system with a silver source of AgCl. This study is the first attempt to electrodeposit silver nanoparticles without using co-solvents other than [C4mim]Cl. Pulse electrolysis is employed for the synthesis of silver nanoparticles by varying applied potentials from −3.0 V to −4.5 V (vs. Pt-quasi reference electrode) and pulse duration from 0.1 s to 0.7 s. Accordingly, the silver nanoparticles whose size ranges from 15 nm to ~100 nm are obtained. The successful preparation of silver nanoparticles is demonstrated regardless of the kinds of substrate including aluminum, stainless steel, and carbon paper in the pulse electrolysis. Finally, the antimicrobial property of electrodeposited silver nanoparticles is confirmed by an antimicrobial test using Staphylococcus aureus.
La capacitación y la rotación del personal como factor de impacto en la armonización contable
Authors: Trinidad-Hernández Margarita Aurora , Guzmán-Fernández Candelaria , Martínez-Prats Germán
Published: October 2022

El presente estudio analiza el impacto que tiene la capacitación y la rotación del personal en la Armonización Contable, mediante un enfoque cualitativo e interpretativo a través de entrevista directa realizada al personal directivo financiero de tres instituciones de gobiernos como organismo descentralizado de la Administración Pública. Los resultados obtenidos demostraron que la capacitación y la rotación de personal son factores que están íntimamente correlacionados entre sí y los dos en conjunto son de alto grado de impacto durante la ejecución de la Armonización Contable, de la manera como se lleve a cabo la capacitación y la rotación del personal en las Intituciones gubernamentales es la forma en que estos factores impactaran, ya sea positiva o negativa durante la ejecución de la Armonización Contable. Por lo que es posible analizar los métodos y estrategias necesarias para aplicar la capacitación y rotación del personal mediante la administración y gestión del conocimiento durante la ejecución de la Armonización Contable.
The impact of peripheral blood cell ratios in dogs with diffuse B-cellsmall lymphocytic lymphoma treated with CHOP protocol
Authors: SEVİM Kadir , ÇOLAKOĞLU Ekrem Çağatay , KAYA Ufuk
Published: October 2022

In this study, pre-chemotherapy hematological values of 14 dogs diagnosed with diffuse B-cell small lymphocytic lymphoma were compared with the hematological data of 26 healthy dogs. Neutrophil/lymphocyte ratio (NLR), lymphocyte/monocyte ratio (LMR), platelet/lymphocyte ratio (PLR), and platelet/neutrophil ratio (PNR) were evaluated between two groups. Anemia and an increased total leukocyte count were observed in dogs with lymphoma compared to healthy ones. The PNR value was found to be significantly lower in dogs with lymphoma. It was concluded that more comprehensive studies are needed to clearly understand the diagnostic and prognostic importance of hematological parameters in B-cell small lymphocytic lymphoma of dogs.
First molecular detection of Neospora caninum in red fox (Vulpes vulpes) brain sample in Türkiye
Authors: EROL Ufuk , DANYER Erdem , ÜTÜK Armağan Erdem
Published: October 2022

The red fox is the wild carnivore with the widest distribution in the world. Thus, this animal acts as intermediate and final host for many parasite species. Neospora caninum is one of the most important protozoan agents causing abortion in cattle, sheep and goats in the world. The final hosts of N. caninum are domestic dogs and wild canids such as wolves and coyotes, while its intermediate hosts are domestic ruminants and many warm-blooded animals, including red foxes. The aim of this study was to research N. caninum in brain samples of three red foxes obtained from wildlife in Türkiye by using PCR. At the end of the study N. caninum DNA was detected in one of three brain samples. To the best of our knowledge, with this study, N. caninum was detected for the first time in a red fox brain sample in Türkiye.
Hormones and Sex Control in Fish with Particular Emphasis on Salmon
Authors: DONALDSON E.M.
Published: October 2022

The application of sex control in finfish aquaculture offers significant benefits for the optimization of production strategies and for the reproductive containment of farmed fish. This paper presents a review of methods developed in salmon for the direct endocrine control of sex differentiation and the indirect control of sex through the integration of endocrine and genetic technologies.
Successful Induction of Sterilization and Growth Improvement in Common Carp Cyprinus carpio Through Dietary Administration of the Androgen Norethindrone
Authors: BASAVARAJA N.
Published: October 2022

Six-d-old fry of the carp, Cyprinus carpio (Linn.) were fed diets incorporated with 5, 25 and 50 mg·kg-1 diet of norethindrone (NE) for 50 d in fiberglass tanks; this was followed by 180 d rearing in fertilized cement cisterns where hormone-free diet was given. NE at 5 mg·kg·1 diet produced 40.00% male, 31.40% female and 28.60% sterile fish. While 25 mg·kg·1 NE induced 96.30% sterile carp and 3.70% males, 50 mg·kg·1 produced 100% sterile carp. The sex ratio of the untreated control group was almost 1:1. Administration of NE at 5 mg·kg·1 slightly suppressed the gonads (both ovaries .and testes). At higher doses, the steroid produced sterile carp which lacked any visible ovarian/ testicular portions. After 180 d post-treatment grow-out, the increase in mean final weights of hormone-treated fish was 19.80, 11.30 and 216.32%, respectively, when compared with the control. Loss of weight due to evisceration was 16.40-17.50% in normal fish, and only 8.4- 8.90% in steroid-treated groups, suggesting the availability of 8% more edible meat per unit weight from sterile fish compared to normal fish. Results of biochemical analysis revealed that the hormone treatment had a positive effect on fat deposition, and significantly increased RNA/DNA ratio. The results suggest that it is possible to produce a 100% sterile progeny of common carp, and to improve growth and dressing weight of NE-treated fish. This is the first report on the successful induction of sterilization with NE treatment in this carp. The benefits of stocking grow-out ponds with sterile carp fry are also discussed.
Effects of Stocking Density on Patterns of Reproduction and Growth of Hybrid Tilapia in Concrete Tanks in Saudi Arabia
Authors: SIDDIQUI A.Q.
Published: October 2022

Effects of four stocking densities (50, 100, 150 and 200 fish m·2) were investigated on some reproductive traits of hybrid tilapia (Oreochromis niloticus x 0. aureus) in outdoor concrete tanks. For both sexes the gonadosomatic index was not significantly influenced by stocking density. Fast-growing fish mature early in the season (March), but spawning started late in May. Mean percentages of mature fish were significantly higher at stocking densities of 50-100 fish m·2 than at higher densities (150-200 fish m·2). No effect of stocking density on size of fish at first maturity was found. Fecundity per female decreased with increasing stocking density, though significant difference was found only between the lowest density (50 fish m·2) and other densities (100-200 fish m·2). The fecundity per gram female did not show any definite pattern, but it was highest for fish stocked at the lowest density. Final mean weight and feed conversion ratios were significantly influenced by stocking densities.
Effect of Inclusion Level and Time on Apparent Digestibility of Solvent-Extracted Soybean Meal for Common Carp ( Cyprinus carpio, Cyprinidae)
Authors: APPLEFORD P. , ANDERSON T.A.
Published: October 2022

Apparent digestibility of solvent-extracted soybean meal (SBM) was determined at four levels of inclusion (10, 20, 30 and 40%) and over two periods of time (days 9-17 and days.19- 24) for common carp (Cyprinus carpio, Cyprinidae). Solvent-extracted SBM was incorporated into a casein-based reference diet, and chromium oxide (1%) was used as an external marker. Apparent digestibility of SBM was found to decrease significantly with inclusion (86.3-73.1%) but not time. The digestibility of dietary protein also decreased significantly with inclusion, and although there was a trend for SBM protein digestibility to decrease with inclusion, this was not significant. Dietary lipid and SBM crude energy digestibility were found to increase and decrease, respectively, with time. These results indicate that digestibility of solvent-extracted SBM and its constituent nutrients for common carp may be affected by both level of inclusion and time, and that these factors must be considered when determining digestibility of protein sources for use in the formulation of experimental and commercial diets for this species.
Options to Reduce the Discharge of Wastes from Intensive Fish Culture
Authors: STEFFENS W.
Published: October 2022

In contrast to fisheries, aquaculture has grown substantially in several regions of the world, and will continue to be a significant employer in food production. With the growth of the industry, pressures on the water resource system will increase, and protective mea­sures must be taken to permit its sustainable use. In modern aquaculture with carnivorous species, improved diet formulation leading to reduced nutrient output is one method of choice effectively employed in European and other industrialized countries, where efficient methods for effluent treatment in land-based fish culture systems have also been devel­oped. The use of recirculation systems will become more important for a number of appli­cations, especially for rearing juvenile fish for stocking. However, know-how on required system components and their interactions needs to be improved to tailor their application to species-specific requirements. Environmental regulations, their control and enforcement, is one issue of increasing worldwide importance. While in some countries aquaculture is over-regulated, the lack of enforcement in many tropical countries of even existing regu­lations is counterproductive to the needs of the industry itself. There is also room to im­prove cost-effective treatment methods for effluents for intensive fish culture systems. This paper deals mainly with experience gained under European conditions.
Effect of Varying Protein and Lipid Levels on the Growth of Rohu, Labeo rohita
Authors: GANGADHARA B.
Published: October 2022

Rohu (Labeo rohita, Cyprinidae) fingerlings (7.5 g) were fed six experimental diets containing two protein levels (25 and 30%) and three lipid levels (4, 6 and 9%) for 98 d. The best growth was obtained with the diet containing 30% protein and 6% lipid. At a given protein/fat level, increase in fat/protein resulted in better weight gain, except in the diet having 30% protein and 9% lipid. Protein efficiency ratio and net protein retention decreased with increase in dietary protein. Muscle RNA/DNA reflected the growth trend. Gut protease and lipase activity had a direct relationship with dietary protein. Dietary fat influenced carcass fat content, but dietary protein had no effect on carcass protein.
Mycotic Granulomatosis and Seasonality are the Consistent Features of Epizootic Ulcerative Syndrome (EUS) in Fresh and Brackishwater Fish of Karnataka, India
Authors: VISHWANATH T.S.
Published: October 2022

Histopathological investigations carried out between 1992 and 1994 on a large number of fresh and brackishwater fish of Karnataka, India, have confirmed that the ulcerative syndrome sweeping through Karnataka since 1991 is the devastating epizootic ulcerative syndrome (EUS). The two key diagnostic features of EUS, namely, oomycete involvement and proliferative mycotic granulomatosis, have been consistently demonstrated in all af­fected fresh and brackishwater fishes of Karnataka. Interestingly, Indian major carps and tilapia present in these affected water bodies were refractory to EUS. Mycotic granulomatosis and seasonality have been identified as the key features of this syndrome.
Ontogenic Development of Amylase Activity in Three Species of Indian Major Carps, Catla catla, Labeo rohita and Cirrhinus mrigala, in Relation to Natural Diet
Authors: KUMAR S. , CHAKRABARTI R.
Published: October 2022

Three species of Indian major carps, catla, rohu and mrigal, were reared from 4th day after hatching to 32 days in a recirculating system. Final average weight was 27.80 ± 2 mg and 31.53 ± 1.24 mg for catla and rohu, respectively, in the first experiment. In a second trial, the final weights for rohu and mrigal were 35.90 ± 3.44 mg and 23.39 ± 1.27, respectively. Amylase activity was very low during transition period from endogenous to exogenous feeding. Enzyme activity increased with age in all three species. It can be con­cluded that these three species of cyprinid larvae can easily hydrolize starch and digest glycogen present in animal tissues a few days after the initial feeding.
The Design of a Gamified App for Supporting Undergraduates' Resilience
Authors: Nicolaidou Iolie , Aristeidis Loizos
Published: October 2022

Supporting students in building psychological resilience is crucial considering the COVID-19 pandemic’s effect on the population’s mental health. Psychological resilience refers to finding ways to cope with stress and achieve goals despite obstacles. It is an important life skill that has become highly relevant in the post-pandemic era. Mobile devices and applications are becoming integral to users’ self-monitoring of health data for their access, convenience, and cost advantages. Most resilience apps target specific professional groups, are not gamified, and lack solid theoretical foundations. Phone-based sensor data collected using Internet of Things (IoT) technology allow for new ways to measure psychological health and provide personalized recommendations. However, none of the existing gamified apps on resilience used IoT. None of the existing resilience apps refers to behavioral change techniques. The proposed resilience app addresses these gaps in the literature. This paper describes the design of a prototype for a gamified, theory-based mobile app that utilizes IoT to provide personalized data and support undergraduates’ resilience in the “new normal” of the pandemic. The poster also provides preliminary data on undergraduates' feasibility and usability evaluation of the prototype, focusing on first-year students. Users set one of three goals daily (focusing on studying, engaging in physical exercise, and socializing), monitor their progress towards achieving them, and receive points and badges when reaching their goals. Goal setting, progress monitoring, and self-reflection at the end of each day are connected to a) self-reported data (e.g., through the use of a short, validated mental health survey that automatically calculates users’ level of anxiety) and b) objectively measured data through the use of IoT (accelerometer and noise sensors) in the app. Users can share their badges on their social media networks. Thirty first-year undergraduates (M=18.41 years old, SD=0.57) tested the prototype resilience app and completed an evaluation questionnaire examining feasibility and usability. Neutral to positive responses (M=3.32 out of 5) were received for all functions indicating feasibility. Design usability was evaluated as satisfactory (System Usability Score=70.3). Future research will evaluate the app in a quasi-experimental setting. Implications for the design of gamified mobile apps for health are drawn.
Enhancing information security awareness programs through collaborative learning
Authors: FILIPPIDIS ADAM , Lagkas Thomas , Mouratidis Haralambos , Nifakos Sokratis , Grigoriou Elisavet , Sarigiannidis Panagiotis
Published: October 2022

Information security attacks targeting human nature, such as phishing, are rising rapidly. Information security Awareness (ISA) programs have been proven to be valuable proactive measures that increase Return On Investment (ROI) regarding information security enhancement. These programs tend to focus on concepts and technical aspects. Although these customary instruction methodologies have their preferences, trainees can additionally take advantage of educational techniques that are more intuitive and situation driven. This study aims to increase the efficiency of learning in such programmes by using design science to create an artefact for learning and then testing the acquired knowledge. Design science will be used as a research method. The creative method, a brainstorming technique, and five steps in design science are performed: explicate the problem, define requirements, design and develop artefact, demonstrate artefact, and evaluate artefact to develop a process framework to respond to this problem. The problem is explicated with a literature review and the requirements to be met by Game-Based Learning (GBL) are set. The first artefact, which is an interactive book support quizzes, crossword puzzles, multimedia such as video, and “complete the word” simple games that enhance the learning process. The second artefact is a printed board game with hackers and cards with the goal to support the learning process and assess the ability of the participants to respond and take actions based on this new knowledge. At last, limitations that exist in security education such as lack of user-centered modules and limited guidelines from learning theories are elaborated and future work is also presented.
De la opinión publicada a la opinión pública. La prensa como lugar de representación y de conflicto
Authors: Bonaudo Marta
Published: October 2022

Este artículo se propone penetrar en el campodiscursivo de lo político desde el lugar de la prensa, entendidacomo un actor que está operando en y sobre una realidad socialhistórica concreta, en el interior de un espacio que implicacon frecuencia enfrentamientos, relaciones con partidarios yenemigos, que propone una recurrente lucha entre enunciadores,mostrando su fuerte dimensión polémica. Realizando unrecorrido sobre la producción periodística entre la década de1850 y 1890, se apunta a explorar el devenir de los discursos quecompiten por hegemonizar el campo, analizar las estrategias quese despliegan en el desempeño de ese papel de mediación que elperiodismo debía cumplir entre la sociedad civil y el Estado ydetectar, finalmente, la progresiva transformación de lo públicos.
Presentación: Marta Bonaudo, entre la historia y el compromiso (1944-2020)
Authors: Mauro Diego
Published: October 2022

El dossier reúne un conjunto de trabajos de MartaBonaudo publicados en diferentes compilaciones a lo largo delas últimas décadas e inaccesibles en formato digital y con accesoabierto. La selección realizada pretende realizar un homenaje asu trayectoria e invita a debatir sobre sus aportes al desarrollo dela historia política argentina del siglo XIX desde una perspectivaregional. El dossier se completa con un ensayo bibliográfico sobresu obra.
Un trimestre intenso: La Federación Obrera Local Rosarina entre la Huelga General de enero y el Congreso de Unificación de marzo de 1907
Authors: Alvarez Carlos
Published: October 2022

La Federación Obrera Local Rosarina fue una seccionallocal de la Federación Obrera Regional Argentina; que se fundóen agosto de 1902, y que creció en organización y capacidad deacción directa llegando a ser un actor clave en el primer trimestrede 1907, el año más álgido en conflictividad obrera tanto contra elcapital como contra las autoridades. El artículo pretende explicarsus tensiones internas como sus posicionamientos a través delanálisis de dos hitos, la huelga general de enero y el Congreso deFusión del movimiento obrero de marzo. En tanto no tuvo prensapropia permanente, la mayor parte de la información proviene dedos fuentes, La Protesta, clásico periódico anarquista editado enBuenos Aires y el diario rosarino El Municipio que cubriera connotable minuciosidad los sucesos.
De las Reinas de las lavanderas de Saint-Étienne a las Reinas del Trabajo de Villeurbanne: inversión de roles de género y conformismo moral (de fines del siglo XIX a principios del XX)
Authors: Zancarini-Fournel Michelle , Barolo (Traducción) Gabriela
Published: October 2022

Este texto se propone revisitar los rituales de eleccióny celebración de distintas reinas obreras en Francia, que hansido previamente analizados por etnologos. A través del prismade los estudios de género, y desde la perspectiva de la historiapolítica y de la microhistoria, realiza un análisis comparativo dela Reina de las Lavanderas, la Musa del Pueblo y la Reina delTrabajo. De esta manera, comienza por indagar en las fiestas delMi-Carême y de la elección de la Reina de las Lavanderas deSaint-Etienne en la segunda mitad del siglo XIX, para luego pasara la coronación de la Musa del Pueblo (1900-1906). Finalmente,analiza la designación de las Reinas del Trabajo en Villeurbanneen los años treinta. El estudio señala la necesidad de distinguirentre, por un lado, la presentación pública y oficial de las reinastrabajadoras, eventos que tienen lugar en el centro del espaciourbano con una concurrencia masiva, son organizados por lasélites políticas y que, a pesar de sus respectivas diferencias,encarnan un conformismo moral y político. Por otro lado, seencuentran las festividades de las lavanderas quienes, en susbarrios y con un rol activo, el día del Mi-Caréme retoman ritualescarnavalescos como la colecta en la calle, los disfraces, los cantosy las prácticas alimenticias, invirtiendo temporalmente, de esemodo, el régimen de género.
Días de ira: la boda secreta de María. Género y emociones en la familia (Barcelona, siglo XVII)
Authors: Fargas Peñarrocha Mariela
Published: October 2022

Análisis de caso realizado a partir de documentación procesal, en concreto pliegos de alegaciones jurídicas, en torno a un relato sobre una mujer que en la Barcelona del siglo XVII decide tomar las riendas de su vida de forma autónoma y se encuentra con la dura oposición de toda su familia. A partir de la narrativa de los hechos, que constituyeron todo un drama familiar y especialmente en las relaciones entre María, que era la protagonista y su hermanomayor, se estudian las representaciones de las emociones como constructoras de género, de jerarquía social, de subordinación.
Cuerpos frágiles y violentados, desigualdades de género y sociales. Buenos Aires y la campaña de comienzos del siglo XIX
Authors: Lionetti Lucia
Published: October 2022

En el presente trabajo se analizan dos expedientes judiciales de los albores del XIX, correspondiente a los Archivosde la Real Audiencia -específicamente los de la Justicia del Crimen de la ciudad de Buenos Aires y su hinterland-, que estaban bajola competencia directa de los Alcaldes de la Santa Hermandad. El objetivo que se persigue es el de analizar, desde la perspectiva de la historia social de la justicia y la interseccionalidad de género, edad y rango social –en el marco de una sociedad con fuertes lazos comunitarios y de un supuesto “patriarcado de baja intensidad”– los episodios de violencias y abusos ejercidos por los varones sobre el cuerpo de las niñas. La extrema vulnerabilidad de las niñas llevó a que, en los casos estudiados, sus progenitores, especialmente, sus madres, denunciaran y desplegaran una serie de estrategias y acciones ante los funcionarios judiciales, buscando la reparación moral ante el daño ocasionado. Un abanico decuestiones, que muestran los pormenores de estas prácticasjudiciales, las situaciones de conflicto, el registro de emociones dequienes quedan involucrados, pero también la clara impronta delas desigualdades sociales y de género, en un contexto de transiciónpolítica y cultural –que lejos está de ser lineal y marcadamente disruptiva- donde comienzan a circular los discursos de la modernidad en torno a la representaciones de la niñez y laconfiguración de la idea de la maternidad. Entre la serie deinterrogantes e indicios que estas fuentes generan, se planteanuna grilla de cuestiones como, hasta qué punto se evidencióun tratamiento especial de la niñez (de modo particular de lasniñas) y qué aconteció respecto al proceder y los vínculos de susprogenitores, madres y padres, en esa realidad social. Se trata, en definitiva, de dar cuenta –una vez más– de las formas persistentes y diversas de dominación sobre las mujeres en un tiempo y espacio concreto.
Presentación: Políticas, cultura y localidad
Authors: Villagrán Andrea , Salomón Tarquini Claudia
Published: October 2022

Los siete trabajos reunidos en este dossier se enmarcan en las problematizaciones en torno a las producciones y expresiones culturales de las provincias y regiones argentinas que vienen desarrollándose desde 2014 en el espacio de los encuentros que originaron la actual REICRE (Red de Estudios Interdisciplinarios en Culturas y Regiones), creada en 2019. En los artículos agrupados se indagan procesos referidos a las provincias de Salta, Tucumán, La Pampa y Santiago del Estero y la construcción del NOA como región. En éstos se despliegan múltiples operaciones metodológicas que hacen de producciones y expresiones culturales, obras intelectuales, acontecimientos, proyectos políticos, políticas culturales o dispositivos estatales, referentes empíricos privilegiados. La cultura concebida como espacio de conflicto y campo de interlocución, impensable sin tener en cuenta las relaciones de poder; así como la mirada crítica que asume a región y a las identidades colectivas -regionales, provinciales, como la salteñidad, santiagueñidad o la pampeanidad- en tanto arena de construcción y disputa, traza el hilo conductor de los artículos agrupados.
Al fin una hidra en el Valle de Lerma: literatura reciente y jóvenes escritorxs en Salta
Authors: Sosa Carlos Hernán
Published: October 2022

Este artículo propone una aproximación panorámica sobre la producción literaria reciente de Salta desde la década del 2000. A partir de este momento, se advierten variaciones sintomáticas debido a algunos factores concomitantes diseñados por la emergencia de formaciones culturales integradas por jóvenes narradorxs y poetxs, que desde la autogestión cultural y la edición de literatura en formatos alternativos generan hondas innovaciones. Estos cambios descentran -en materia temática y procedimental- los lugares preestablecidos por las tradiciones literarias, en especial las congregadas modélicamente alrededor de la salteñidad como constructo identitario local, que hegemonizaba los modos de pensar lo cultural, al menos desde la década de 1930.
La participación femenina en el peronismo bonaerense
Authors: Marcilese José
Published: October 2022

El presente artículo analizará las formas que asumió la participación femenina en el peronismo de la provincia de Buenos Aires en el período que se inicia con el golpe militar de 1955 y culmina con el regreso de Perón en 1973. Se estudiará la intervención que las mujeres tuvieron en las experiencias de reorganización partidaria y en la integración del personal político que el peronismo conformó para participar en sucesivas elecciones. La hipótesis que ordena este trabajo reconoce que en el período considerado se observa un progresivo incremento de esa participación. Una tendencia que, si bien responde a aspectos constitutivos de la cultura política peronista, también debe ser analizada a la luz de la centralidad que la militancia femenina asumió en tiempos de la resistencia como del escenario de cambio que presentó la década de 1960 en materia de derechos para las mujeres.
“Las reglas de una república arreglada”. Aspiraciones de una comunidad política en la frontera (Carmen de Patagones, 1781-1799)
Authors: Buono Pazos Daiana
Published: October 2022

La población de Carmen de Patagones se originó entorno de la plaza militar creada en 1779 y convertida en sede decomandancia militar y política en 1785. Dada la singularidad desu origen y a diferencia de otros espacios fronterizos similares,la población se desarrolló por fuera del modelo institucionalcastellano de comunidades territoriales dotadas de ayuntamiento.Empero, lo que trasuntan las fuentes es que, en el marcode condiciones locales particulares, existieron instancias departicipación política de los pobladores en defensa de intereses degrupo por vía de peticiones ante las autoridades reales. A través dela documentación disponible del Archivo General de la Nación,se analizan dichas instancias como un modo en que la poblaciónse expresó en términos de una “república”, examinando algunosaspectos que dan cuenta de la misma.