bluuebunny/crossref_metadata_2025 huggingface dataset:
Morphologische und biotische Eigenschaften des Pilzes Colleotrichum Coccodes (Wallr.) Hughes, dem Verursacher des Kartoffelknollenbrandes
Authors: ŠAVOR Jože
Published: July 2024

Drei Isolate des Pilzes Colletotrichum coccodes (Wallr.) Hughes, die aus Kartoffelkultivaren 'Jaerla' (2) und 'Resy' (1) gewonnen wurden, wurden auf ihre morphologische und biotische Eigenschaften in vitro untersucht.
Agraroperationen in Slowenien an der Jahrtausendwende
Authors: BOREC Andreja
Published: July 2024

Auch in Slowenien fand der Übergang zu den nachhaltigen Entwicklungsformen einen großen Anklang. Das erste Dokument auf diesem Gebiet war die Entwicklungsstrategie der slowenischen Landwirtschaft (1992), in der alle langfristigen Grundziele der Agrarpolitik angeführt werden, welche eine effektive und umweltfreundliche Landwirtschaft sowie eine nachhaltige (umweltverträgliche) Entwicklung des landwirtschaftlichen Raumes ermöglichen sollen. Die Analyse der agrarpolitischen Instrumente in einigen westeuropäischen Ländern hat gezeigt, daß Agraroperationen für die Realisierung des umweltverträglichen Agrarraumes besonders geeignet sind.
Dinamika razvoja specifične listne površine hmelja (Humulus lupulus L.), cv. 'savinjski golding' v letu 1993
Authors: ČREPINŠEK Zalika , KAJFEŽ-BOGATAJ Lučka , ZMRZLAK Marko
Published: July 2024

Characteristics of plant stand can be described by using plant architecture parameters. The most important are: leaf area index (LAI), height of plant stand (h) and leaf area densitiy (az). It is necessary to estimate specific leaf area (SLA) for indirect determination of LAI. Specific leaf area (SLA) for hops (Humulus lupulus L., cv. 'Savinja golding') was estimated on an experimental field IHP Žalec during an extremely warm and dry growth season in 1993. SLA was the highest (21 m2kg-1) at the time of first measurement, on the 10th May, afterwards it gradually decreased and was 12 m2kg-1 at the time of the last measurement, on the 16th August. The changing of SLA according to the height of plants in the growth season has been estimated and the differences were statistically insignificant.
The use analog method for statistical downscaling of 500-mb level height to autumn precipitation in Slovenia
Authors: BERGANT Klemen , KAJFEŽ-BOGATAJ Lučka
Published: July 2024

Analog method was used to estimate the October and November precipitation at 5 locations in Slovenia in time period 1958-1999. The 500-mb level height was chosen as a predictor. Predictor data were taken from area of size 20° × 20° with center at 45° N and 15° E. The resolution of predictor data was 2.5° × 2.5°. Empirical orthogonal function analysis was performed prior the application of analog method. Reasonable analogs for all predictor fields were found with 1 exception. The cross validation approach was used for testing the employability of analog method for statistical downscaling of 500-mb level height to October and November precipitation. The analog method performed well in estimating the real values of averages of October and November precipitation and their variability in treated time period. Significant, but not extremely high correlation between observed and estimated values was detected. Calculations were performed also for other months in year. The statistical models are beside for October and November also employable for estimating the monthly precipitation in winter months, but not successful in estimating the amount of precipitation in spring and summer months. In comparison to location Ljubljana, Rateče and Novo mesto, lower skill of analog method for estimation of monthly precipitation was found for location Maribor and slightly higher for location Slap. Different performance on different locations probably originates in the interaction of Mediterranean cyclones with agitated Slovenian relief, especially with Alpine-Dinaric barrier. Statistical models based on analog method can be used for rough estimation of precipitation in October and November and also for precipitation in winter months in Western and Central Slovenia. For better results a multiple predictor and more complicated downscaling schemes should be used.
Discriminant and principal component analysis in the classification of hop (Humulus lupulus L.) cultivars
Authors: ŠUŠTAR-VOZLIČ Jelka , VASILJ Đurđica
Published: July 2024

Methods of multivariate analysis were applied to distinguish groups of hop cultivars and to classify individual cultivars from the Hop Gene Bank of the Institute of Hop Research and Brewing in Žalec. Seven cultivars were included in the study, two from the Fuggle group of hops, two from the Bohemian group and three unclassified cultivars, 'Osvald's clone 126', 'Saladin' and 'Polish clone 12'. Twenty nine variables were used, including morphological traits and the results of chemical analysis. On the basis of the results of discriminant analysis the three unclassified cultivars classified in the Fuggle group. Discriminant and principal component analysis were used to assess the important traits for distinguishing the two groups of cultivars. The results are presented in the paper. In the case of the three unclassified cultivars discriminant analysis can be sufficient for the solution of classification problem, although the results of principal component analysis are in accordance with previous findings.
Evaluation of clonal variability of cv. Refošk (Vitis vinifera L.) by ampelographic parameters and microsatellite analysis
Authors: KOZJAK Petra , KOROŠEC-KORUZA Zora , TOMAŽIČ Irma , JAKŠE Jernej , JAVORNIK Branka
Published: July 2024

Twenty - one clone candidates or elites from the basic collection in the Kras winegrowing district of cv. Refošk, were studied in order to assess their genetic and morphological variability. Morphological variability was evaluated with 71 phyllometric variables or 30 less environment dependent variables, which were then used in cluster analysis. Both resultant dendrograms combined the majority of elites into closely related groups, except elite 50, which did not group with any of the analyzed elites. Microsatellites were used for the assessment of genetic variability among elites. The allelic profile at 5 microsatellite loci (VVS2, VVS4, VVMD6, VVMD7 and VVMD8) was identical for 20 elites, while elite 50 showed an unique allelic profile at all analyzed loci. Microsatellite analysis was proven to be relatively fast and simple, providing reliable results in comparison with well established ampelography. However, a combination of both methods was found useful in evaluation of variability among elites, especially when clones are phenotypically heterogenous and of unknown genetic origin, as in the case of the cv. Refošk basic collection.
Miscible displacement of nitrate and ammonium in soil columns
Authors: ZUPANC Vesna , VESELIČ Miran , CEPUDER Peter
Published: July 2024

The displacement of nitrate fertilizer by distilled water under saturated conditions and at different average flow velocities in one – dimensional soil columns is studied to observe the behavior of the nitrogen in transport processes. Breakthrough curves of nitrate were comparing to the ammonium breakthrough curves symmetrical with all aggregate sizes. The biggest influence on the nitrate retention had 0.63–2 mm fraction, where 30–50 % of the total mass was preserved. The biggest influence on the ammonium transport had its ability to fixate on the negative charged particle surfaces. Breakthrough time for nitrate and ammonium was the shortest with 2–4 mm aggregate size.
Gojenje solate (Lactuca sativa L.) na aeroponski način z dovajanjem NO3– in NH4+ v hranilno raztopino
Authors: DEMŠAR Jernej , OSVALD Jože
Published: July 2024

With four different ratios NO3– : NH4+ (A, 100:0; B, 0:100; C, 50:50; D, 86.8:13.2) in nutrient solution on aeroponical system growth of lettuce (Lactuca sativa L.) cultivar 'Vanity' was conducted. Nitrogen concentration was the same in all treatments. The trial was carried out in a greenhouse on the laboratory field of Biotehnical Faculty in Ljubljana from June 18, 1999 to July 19, 1999 and from May 29, 2000 to June 29, 2000. At the end of experiment we measured or estimated total mass, height and width before and after cleaning, the compactness of heads, length and mass of roots, and the developmental phase. The highest average weight of 743 g/plant was measured during the first season in lettuce fed with 86.8% nitrate and 13.2% ammonium nitrogen. Treatment with 100% ammonium showed a significantly (p ? 0.01) lower harvest compared to others which did not show significant differences.
Wasp Neodryinus typhlocybae Ashmead – successful predator and parasitoid for reducing the population of flatid planthopper (Metcalfa pruinosa Say) also in Slovenia
Authors: ŽEŽLINA Ivan , MILEVOJ Lea , GIROLAMI Vincenzo
Published: July 2024

Metcalfa pruinosa Say has been present in Slovenia for more than a decade and has been gradually, but constantly spreading also because of the reason that for the time being we do not have an efficient autochthonous natural enemy that could limit such great population in number and its spreading to the central parts of the country. The wasp Neodryinus typhlocybae Ashmead is in the North and South America and after its introduction to Italy also in Europe the main antagonistic organism for the limitation of spreading of flatid planthopper. With the introduction of the wasp to Slovenia we have wanted to limit the spreading of flatid planthopper, to reduce the population and so to establish a partly biological balance between these two species. In the research we were observing time adjustment between the hatching of the wasp and the appearance of different evolutionary stages regarding flatid planthopper and the appearance of the second incomplete generation of the wasp which is important for predatory and parasitoid effect. We were also doing research into successful settlement of the wasp into a natural habitat on two locations in the Primorska region.
Povezava med nastopi pomladnih fenofaz in indeksom severno atlantskega nihanja v Sloveniji
Authors: ČREPINŠEK Zalika , KAJFEŽ-BOGATAJ Lučka , BERGANT Klemen
Published: July 2024

The influence of North Atlantic Oscillation on spring phenology in Slovenia has been analysed in this study. The NAOI trends of the early spring towards more positive values and hence stronger zonal flow during the last 20 years has been clearly reflected by an earlier onset of spring phases. Phenological and meteorological data for the period 1955-2000 were used in our study. Eight stations were selected: Celje, Ilirska Bistrica, Lesce, Ljubljana, Maribor, Murska Sobota, Novo mesto and Rateče, which represent at the same time phenological and meteorological stations. Twelve plants were chosen to represent three groups of phenological objects: wild herbaceous plants (snowdrop, dandelion, spring-saffron), forest trees and shrubs (common silver birch, beech, common elder, horse-chestnut, goat willow, hazel, large-leaved lime, common lilac), and fruit trees (plum tree). Environmental Agency of Republic of Slovenia provided phenological (leaf unfolding, beginning of flowering, full flowering) and meteorological data. The correlation between winter North Atlantic Oscillation Index (NAOI) and temperature is highly significant for all stations for the months from December to March, the average correlation coefficient is +0,58. With NAOI variability we explained the large part of variation in flowering phases of early-spring plants like dandelion, pussy willow and hazel. Correlations are weaker for late-spring phenophases. The values of all correlation coefficients are negative in all cases.
Micropropagation and acclimatization of yellow gentian (Gentiana lutea L.)
Authors: ŽELEZNIK Anita , BARIČEVIČ Dea , VODNIK Dominik
Published: July 2024

The main objective of the present work was to find the optimal way of multiplicating yellow gentian (Gentiana lutea L.). Due to problems with germination of seeds in in vivo conditions as well as the high variability of generatively propagated plants, tissue multiplication was opted for. Different explants (shoot tips, lateral green buds, root segments) and immature seeds were used in order to ensure the most convenient starting material to obtain healthy in vitro cultures. Immature seeds, in different stages of ripening, were germinated on MS medium supplied with 0.5 mg/l of gibberellic acid (GA3). It was observed that the germination rate did not depend on the stage of ripeness of the seeds. Average germination was 21%. Plants were taken to the MS medium supplied with 1 mg/l of indoleacetic acid (IAA) and 0.1 mg/l benzyladenin (BA) to induce shoot tips. On average, the proliferation rate was estimated to be 3 offshoots per 21 days. Rooting of multiplied shoots on MS medium with 2 mg/l of naphtalenacetic acid (NAA) was 52%. Attempts in which other plant explants were used were unsuccessful due to the high number of infections. The acclimatization of the plants comprised an inoculation with AM fungi. The inoculation was successful, but the root infection developed only locally. There was no effect of inoculation on the plant growth and survival.
Krizanteme: so novosti sploh še možne?
Authors: OSTERC Gregor , ŠIFTAR Aleksander
Published: July 2024

Chrysanthemum, one of the most widespread ornamental plants, is presented in the review article. The plant species or hybrid complex (Dendranthema ´ grandiflorum) is very well known. However, the experiments with this species can be still carried out in two interesting directions. The first one comprises the research into the optimal nutrition and the second one deals with the development of new sorts. The problem of the nutrition of chrysanthemum can be solved in two ways. Firstly, there is a search for the optimal nutrition regarding the qualitative cutting material, and secondly, there is a search for the optimal nutrition regarding the ecological aspects as we are all aware of the negative consequences a nonprofessional nutrition with N can cause. The development of the sorts is outstanding as every year 100 new sorts enter the market. The main directions of the development are presented separately; namely, those which are useful for the cutting flowers cultivation and those which are beneficial for the cultivation of potted flowers.
An evaluation of some morphological traits in doubled haploid cabbage (Brassica oleracea var. capitata L.) lines and their F1 hybrids
Authors: RUDOLF Katarina
Published: July 2024

Fifty - four doubled haploid lines produced via androgenesis and self-pollination were analysed in a field trial, as well as some of their hybrids. Based on statistical evaluation, 17 lines with favourable morphological traits (head weight, proportion height/width – head shape coefficient, percentage of internal stump, head firmness) and high heterogenity were selected. The control cultivar Varaždinsko showed better growth potential than the analysed inbred lines. Doubled haploid lines indicated some level of inbreeding depression, but their F1 hybrids showed a significant heterosis effect. One experimental hybrid between inbred lines (278 x 844) was comparable to commercial hybrid cultivars (Atria F1, Bravo F1, Krautami F1, Rinda F1).
Vpliv ultravijoličnega –B (UV-B) sevanja na primarne proizvajalce
Authors: GERM Mateja
Published: July 2024

Ozone layer in stratosphere is thinning and consequently UV-B radiation on the Earth surface is increasing. Although there is a small portion of UV-B radiation in the solar radiation, it has strong influence on organisms. Targets of UV-B radiation and protective mechanisms in primary producers are described. In the framework of the international project we studied the effect of UV-B radiation on blue-greens, algae, mosses, lichens and vascular plants on the National Institute of Biology.
Fotobiologija, Znanost o svetlobi in življenju
Authors: Gaberščik Alenka
Published: July 2024

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Influence of repeated switching of current through contacts made of electroconductive fabrics on their resistance
Authors: Leśnikowski Jacek
Published: July 2024

Recently, there has been a sharp increase in interest in Smart clothing. This type of clothing is equipped with electronic systems connected using wires with various types of connectors. This article presents the impact of repeated current switching through contacts made of electroconductive fabrics on their electrical resistance and analyses the influence of selected parameters of these fabrics on the above phenomena. Textile contacts described in the article are one of the most important parts of the future textile electric connectors incorporated into modern Smart clothing. The article also describes tests of resistance of these fabrics to overheating caused by the current flowing through them. The present research was conducted to check the suitability of electroconductive fabrics for making electrical contacts of future textile connectors. The research presented in the article showed that electroconductive fabrics can be used as durable contacts for direct current circuits carrying currents of several amperes. The type of metal with the highest percentage among the metals used to impart electroconductivity to the tested fabrics has a statistically significant impact on the durability of electrical contacts made of these fabrics.
Advancing prenatal diagnosis: Echocardiographic detection of Scimitar syndrome in China – A case series
Authors: Wang Yan , Geng Bin , Yang Peizhi , Li Wenxiu
Published: July 2024

Objective

To investigate the clinical value of echocardiographic detection in the prenatal early diagnosis of Scimitar syndrome (SS) in fetuses, and to develop better and more accurate management strategies for improved prognosis.

Methods

A retrospective analysis was conducted on medical records and fetal echocardiographic findings of all cases diagnosed as SS between April 1, 2016 and June 1, 2021. To summarize its echocardiographic features and distinguishing points, comprehensive clinical data and prognostic information were gathered.

Results

Six patients were diagnosed with SS during the study period. Major associated abnormalities included atrial septal defect (n = 3), right inferior pulmonary vein anomalies (n = 2), ventricular septal defect (n = 1), and right aortic arch (n = 1). Post-surgery, all patients exhibited unobstructed pulmonary vein flow and absence of pulmonary hypertension. The average follow-up duration was 24 months, during which five infants underwent surgical intervention for SS.

Conclusion

Comprehensive prenatal screening, particularly combined coronal and sagittal views of the fetal thorax, enables accurate diagnosis of right SS. This approach not only aids in timely intervention but also provides crucial prognostic insights for the child’s future well-being.
Optimization of electric vehicle design problems using improved electric eel foraging optimization algorithm
Authors: Mehta Pranav , Yildiz Betül Sultan , Sait Sadiq M. , Yıldız Ali Riza
Published: July 2024

This paper introduces a novel approach, the Modified Electric Eel Foraging Optimization (EELFO) algorithm, which integrates artificial neural networks (ANNs) with metaheuristic algorithms for solving multidisciplinary design problems efficiently. Inspired by the foraging behavior of electric eels, the algorithm incorporates four key phases: interactions, resting, hunting, and migrating. Mathematical formulations for each phase are provided, enabling the algorithm to explore and exploit solution spaces effectively. The algorithm’s performance is evaluated on various real-world optimization problems, including weight optimization of engineering components, economic optimization of pressure handling vessels, and cost optimization of welded beams. Comparative analyses demonstrate the superiority of the MEELFO algorithm in achieving optimal solutions with minimal deviations and computational effort compared to existing metaheuristic methods.
Crystal structure of poly[tetraaqua-bis(μ2-5-bromoisophthalato-κ3
O,O
′:O
″)-(μ2-1,5-bis(imidazol-2-methyl)pentane-κ2
N:N
′)dicadmium(II)] dihydrate
Authors: Xiang-Yu Chen , Xin-Tong Yao , Ying Cui , Man-Sheng Chen
Published: July 2024

C29H48Br2Cd2N4O14, monoclinic, C2/c (no. 15), a = 17.225(2) Å, b = 11.2454(13) Å, c = 20.710(2) Å, β = 109.151(3)∘, V = 3789.5(8) Å3, Z = 4, Rgt
(F) = 0.0326, wRref
(F
2) = 0.0818, T = 296(2) K.
Comorbidity in spinal cord injury in Iran: A narrative review
Authors: Taheri Taher , Hosseindoost Saereh , Kazemi Hadi , Kamali Seyedehalia , Kolivand Pirhossein , Gharaylou Zeinab
Published: July 2024

Spinal cord injury (SCI) is a severe medical condition that affects millions of people worldwide each year. In Iran, an estimated 9 out of every 100,000 individuals experience traumatic SCI occurrences. Long-term disabilities and comorbidities stemming from SCI often necessitate multiple therapeutic interventions. The aim of this study is to evaluate the morbidity in Iranian SCI patients. In this study, a four-step process was used to select, extract, analyze, and synthesize relevant literature. The search covered 750 records from five databases, resulting in 25 articles included in the review. These articles, published between 2000 and 2023, utilized cross-sectional, qualitative, or cohort designs. The findings explored the prevalence, risk factors, and consequences of comorbidities associated with SCI, categorized into four themes: physical, sexual, psychological, and metabolic morbidity. Physical morbidity refers to medical conditions or complications affecting body functions or structures in SCI patients. The most frequently reported cases include pressure ulcers, pain, osteoporosis, fractures, impaired pulmonary function, renal failure, and obesity. Metabolic morbidity includes conditions such as vitamin D deficiency and cardiometabolic risk factors. Psychological morbidity encompasses depression, anxiety, and adjustment disorders. Sexual morbidity refers to conditions or complications affecting the sexual function or satisfaction of SCI patients. This narrative literature review offers a comprehensive examination of various aspects of SCI in Iranian patients. The review identifies numerous challenges and difficulties faced by SCI patients while also highlighting protective factors that can improve their well-being. Additionally, the review acknowledges gaps and limitations within the current literature and suggests possible avenues for future research.
Trade Credit: Some Issues of Accounting and Analysis of Accounts Receivable
Authors: Gnatiuk Taras , Shkromyda Vitalii , Shkromyda Nadiya
Published: July 2024

This article studies the accounting and analysis of accounts receivable, particularly trade credit, as a key financial management tool within the global competitive environment. The authors explore theoretical and practical aspects of managing accounts receivable and methods to assess its impact on financial stability. Emphasis is placed on the theoretical justification for non-standard practices in accounting and analyzing trade credit as a separate asset, aiding in better risk identification of bad debts that affect enterprise viability. The study highlights that accounting entries for income registration result in constant receivables within assets, necessitating proper management strategies. Customer receivables, often from trade credit, require a dedicated debt management and collection policy to minimize operational risks. The authors point out that national and international accounting standards do not classify trade credit as a separate asset, complicating financial risk management and analysis. Effective management methods, including data collection on customer creditworthiness, are critical for financial stability. The article underscores the importance of systematizing empirical studies to support theoretical development in accounting and analyzing accounts receivable. Effective trade credit management is vital for enterprise competitiveness. The study employs dialectical and deductive approaches to draw logical conclusions on the relationship between receivable management and financial stability. The authors review Ukrainian and international legislation to identify legal aspects of receivables management. A high proportion of bills of exchange in receivables indicates customer credit risk, necessitating an effective credit policy. Recommendations include analyzing customer creditworthiness and using modern financial risk assessment methods. This article proposes approaches to accounting and analyzing accounts receivable, enhancing the scientific theory of financial management and improving the application of theoretical knowledge in modern economic management.
Neurodegenerative and Neurobehavioral Symptoms in Jember Agricultural Workers Caused by Oxidative Stress and Neurotransmitter Disturbance
Authors: Narwanto Muhammad Ihwan , Purwandhono Azham , Sofiana Kristianningrum Dian , Febianti Zahrah , Jauhani Muhammad Afiful , Kusumastuti Inke , Putri Elvia Rahmi Marga
Published: July 2024

Increased use of pesticides can have detrimental health consequences, one of which is chronic neurotoxicity. The symptoms include degenerative and neurobehavioral issues. Chronic neurotoxicity occurs through oxidative stress, inflammation, and neurotransmitter disturbances. This study aimed to determine chronic neurotoxicity and test malondialdehyde and cholinesterase levels as neurotoxicity biomarkers among agricultural workers in Wuluhan, Jember, Indonesia. The 60-person research sample was divided into two groups: agricultural and non-agricultural workers. The interview utilized a mini-mental score examination, Chan's questionnaire, and the Patient Health Questionnaire to analyze the cognitive impairment, Parkinsonism, and depressive symptoms. The examination of serum malondialdehyde levels was performed using the TBARS method and cholinesterase levels by photometric kinetic method at a biochemistry laboratory from October to November 2022. Results showed cognitive impairment and depressive symptoms in agricultural workers, as well as high levels of malondialdehyde and low cholinesterase levels. This study concludes the presence of chronic pesticide neurotoxicity among agricultural workers in Jember, Indonesia, and that malondialdehyde and cholinesterase levels might serve as biomarkers of pesticide-induced neurotoxicity.
Sexuality, self-esteem and sexual dysfunction among the elderly
Authors: Dias Marmo Flavia Aparecida , Gonçalves da Silva Erika , Santos Ferreira Pollyana Cristina dos , Dias Marmo Flavia Aparecida , Gonçalves da Silva Erika , Santos Ferreira Pollyana Cristina dos
Published: July 2024

Introduction: The aging process is marked by physiological changes, which can feed stereotypes mainly of dysfunction and dissatisfaction. It is noted that there are prejudices related to active sexuality in old age. Objective: To describe the sociodemographic, economic profile, self-esteem and sexual dysfunction, knowledge and attitudes of the elderly; compare the knowledge and attitudes related to the sexuality of the elderly with sex and correlate the knowledge and attitudes related to the sexuality of the elderly with age, self-esteem and sexual dysfunction. Methods: Quantitative, cross-sectional, analytical and observational study. Data were collected via telephone contact, between October 2020 and May 2021. 218 elderly people living in the urban area of Uberaba-MG participated. A sociodemographic questionnaire, the Rosenberg Self-Esteem Scale, the Attitudes and Knowledge Scale about Sexuality in Aging (ASKAS), the female version of the Sexual Quotient (SQ-F) and the male version of the Sexual Quotient (SQ-M) were used. Results: The average age of the participants was 74.3 (SD=7.97). Regarding sexual satisfaction/performance, most women reported it as unfavorable to regular and men as good to excellent. Elderly men had better knowledge about sexuality compared to elderly women, and a less conservative attitude than women. Greater knowledge about sexuality was related to younger age, higher self-esteem and greater sexual satisfaction/performance among men. Conclusion: It is essential that professionals address the issue of sexuality among the elderly.
Análisis de la política pública dirigida a la población adulta mayor ante la pandemia del Covid-19 en México, Chile y España
Authors: Hernandez Delgado Yolanda de Jesus , Mendoza-Tello Willy-Octavio
Published: July 2024

El objetivo es analizar cómo la pandemia produjo un Estado de excepción en el que las personas mayores se han convertido en objetos de políticas en lugar de sujetos de derechos en países como México, Chile y España. A través de la revisión de los procesos de envejecimiento poblacional de estos países, como producto imprevisto de la modernidad, de los efectos de la pandemia por Covid-19 entre la población adulta mayor de los países en turno y las medidas que fueron tomadas, sobre todo, a partir de las primeras “dos olas” de contagio, así como de algunos casos a nivel intranacional para visibilizar que las decisiones políticas en torno a la vejez se cimientan sobre la valoración de este grupo en una lógica de estratificación etaria.
El Salto de Honda: un lugar-actante en la historia de Colombia
Authors: Diaz Angarita Sandra Lorena , Rojas Robles María Rosario
Published: July 2024

El presente artículo trata el caso del “Salto de Honda”, también conocido como raudales o rápidos de Honda, lugar crucial en la historia de Colombia a través del río Magdalena. El objetivo es demostrar la agencia de este lugar-actante, contribuyendo así a la construcción de la historia ambiental de este importante río. Para lograrlo, se analizaron las narrativas que han hablado o representado el Salto de Honda, a partir de fuentes primarias, historiográficas y del ámbito institucional, así como las que emergen de la memoria de historiadores, pescadores y habitantes del Salto. Con base en lo anterior, se presenta como propuesta metodológica una construcción narrativa de la agencia del Salto de Honda con el fin de representar la historia de las agencias no humanas y de repensar la historia de Colombia a través del río Magdalena.
Application of the New Extended Topp-Leone Distribution to Complete and Censored Data
Authors: Nyamajiwa Violet Zivai , Musekwa Regent Retrospect , Makubate Boikanyo
Published: July 2024

One of the most important applications of statistical models is in analyzing survival data. In this study, we developed the Gamma Type Two Half Logistic Topp-Leone-G model using the technique earlier proposed by Zografos and Balakrishnan. Different characteristics of the proposed distribution are obtained. In order to estimate the model parameters based on complete and censored data, the maximum likelihood estimation method is used. Through Monte Carlo simulation, the performance of the estimators is evaluated. The proposed distribution's potential significance and applicability are empirically demonstrated using actual datasets. We found that our new distribution is a very competitive model for describing both complete and censored observations in survival analysis. The work demonstrated that in certain cases, our new model performed better than other parametric models with the same number of parameters.
Biofuncionalización de superficies a base de fibroína para su potencial uso en aplicaciones cardiovasculares
Authors: Murillo Usuga Carlos Augusto , Escobar Sierra Diana Marcela
Published: July 2024

En el presente trabajo, se biofuncionalizaron con heparina películas fabricadas a base de fibroína (SF) y polivinil alcohol (PVA) utilizando dos técnicas diferentes, la primera por acople de carbodiimida y la segunda por aprovechamiento de interacciones electrostáticas, buscando conseguir un comportamiento antitrombogénico en la superficie de las películas fabricas para su potencial uso como biomateriales para la fabricación de implantes cardiovasculares. Las muestras biofuncionalizadas fueron sometidas a una prueba de coagulación de sangre para verificar el éxito de dicha biofuncionalización. Los resultados mostraron que las muestras biofuncionalizadas por acople de carbodiimida, además de presentar una actividad antitrombogénica superior a las biofuncionalizadas por aprovechamiento de interacciones electrostáticas, presentaban valores de ángulos de contacto más cercanos a los de los materiales para la fabricación de implantes cardiovasculares, y que también, la biofuncionalización no afecta significativamente las propiedades mecánicas y superficiales de las películas fabricadas.
Conflict-Generating Risks of the Ethnocultural Foundations of the Student Youth Identity: The Case of the Frontier North Caucasus Region
Authors: Denisova Galina S. , Avdeev Evgeniy A. , Vorobev Sergey M.
Published: July 2024

Introduction. In multi-ethnic regions, which include the North Caucasus and the South of Russia in general, reducing the risks of identity conflict, in particular the conflictogenic potential of ethnic identity, is one of the priority tasks of public administration. The object of this policy, first of all, is the youth of the region, from whose ranks the activists of protest movements are recruited. This situation requires monitoring the social well-being of young people in the context of the combination of all-Russian and ethno-confessional identity. The aim of the study is to identify conflictogenic risks arising in the process of sociocultural interaction in multi-ethnic youth communities of border regions.

Materials and Methods. The empirical basis of the research state of social identity of youth in the North Caucasus was the results of surveys conducted by the authors in March – April 2022 and 2023 among students of regional universities. It was assumed that the aggravation of the geopolitical situation and a special military operation acted as a trigger for the transformation of the social identity of youth, which has a different trajectory for groups of youth representing the peoples of the North Caucasus and Russians living in the region. An emotional assessment of closeness with communities of different taxonomic series made it possible to establish the significance of all-Russian identity in comparison with ethnic, regional and confessional ones.

Results. A comparative analysis of the collected material indicates that the most significant consolidating values and symbols that unite the youth of the region are the common state and state symbols. By choosing these values, as well as the values of Russian culture and the general historical past, young people who consider themselves to be the peoples of the North Caucasus have come closer to the value profile of Russian youth in the region. In the consciousness of Russian youth, there is a growth in sociocultural values, the significance of which in their ideas has approached all-Russian civil and political values. There continues to be a trend aimed at sociocultural integration and erasing ethnocultural differences among the youth of the groups under consideration.

Discussion and Conclusion. All-Russian and ethnic identities among young people living in the region are complementary, not competitive. The challenges the country faces are viewed by them as personal and socially significant. This trend is becoming a significant factor that reduces the conflict-generating risks of ethnocultural foundations of identity in youth communities of the North Caucasus. Scientific results will contribute to the understanding of sociocultural threats and risks of conflict in multiethnic youth communities of frontier regions, and will be useful to the scientific community and government authorities.
THE GROWTH KINETICS AND TOTAL LIPID CONTENT OF Thalassiosira sp. (BACILLARIOPHYCEAE) UNDER MIXOTROPHIC CONDITIONS
Authors: Nodque Kelee Ira Burgan , Dionela Cleresa Salido , Huervana Fredson Hervias , Traifalgar Rex Ferdinand Mallare
Published: July 2024

Conventional microalgae culture is challenged by issues of light limitation and cell self-shading. This study aims to evaluate the impact of different cultivation modes on the growth and lipid content of Thalassiosira sp. The diatom, Thalassiosira sp., was grown in autotrophic, mixotrophic-suspended, and mixotrophic-biofilm conditions until the stationary phase was reached. After four (4) days of culture, analysis of the cell densities revealed a significant difference between groups, with cell densities of 7.3×105 cells mL-1 for control, 1.1×106 cells mL-1 for mixotrophic-suspended, and 1.9×106 cells mL-1 for mixotrophic-biofilm cultures. Both treatments are significantly higher than the control. However, mixotrophic-biofilm culture achieved the highest cell density among all cultivation modes, 161.81% higher than the control. The specific growth rate (SGR) of Thalassiosira sp. in mixotrophic-biofilm culture was highest among treatments, while the doubling time was significantly highest in the control. Moreover, mixotrophic-biofilm culture attained the highest biomass at 56 mg 100 mL-1. Thalassiosira sp. cultured under mixotrophic-biofilm also recorded the highest lipid content at 9.89%. It is both significantly higher than the control (3.06%) and the mixotrophic-suspended culture (6.15%). The cell density, algal biomass, and lipid content of Thalassiosira sp. under mixotrophic-biofilm culture highlight this culture strategy’s promising potential in improving microalgae growth and lipid content, ridding of light as an indispensable growth factor.
THE EFFECT OF DIETARY SUPPLEMENTATION OF SARGUSSUM WIGHTII EXTRACT ON CLARIAS GARIEPINUS PHYSIOLOGICAL RESPONSES
Authors: Aderolu Ademola Zaid , Ishola Ismail O. , Aluta Uzeme Precious , Williams Boluwatife O.
Published: July 2024

Seaweeds are becoming vital feed materials due to their high concentration of nutrients and active secondary metabolites. In this context, the brown seaweed Sargassum wightii extract (SWE) was included in Clarias gariepinus diets to investigate its effects on growth rate, nutrient utilization, haemato-biochemical indices, antioxidant activities and immune responses. Four experimental diets with four different levels (control- 0 %, 0.25 %, 0.5 %, and 1.0 %) of SWE were fed to four triplicate groups of C. gariepinus juvenile (mean initial weight 14.50 ± 0.00 g) for 28 days. At the end of the feeding trial, there was no significant difference (p>0.05) in the growth performance of fish groups fed SWE and the control group. However, there were significant differences (p<0.05) in feed conversion ratio and protein efficiency ratio between the control and SWE groups. Erythrocytes, leukocytes, haemoglobin, lymphocytes, and high-density lipoprotein cholesterol in fish fed SWE supplemented diets were significantly higher (p<0.05) than control. Notably, the liver function enzyme- Alkaline phosphatase was significantly higher (p<0.05) in fish fed SWE diets when compared to the control group. There was significant variation (p<0.05) in hepatic antioxidant enzymes activities across all diets. It was also observed that TNF-α, IL-6 and IL-β increased significantly in the liver of C. gariepinus fed SWE supplemented diets compared to control. Therefore, these results suggest that inclusion of S. wightii extract in the fish diet, although did not enhance growth performance, could improve the immune status and reduced oxidative stress of C. gariepinus.
GROWTH AND PHYSIOLOGICAL RESPONSE OF TINFOIL BARB (Barbonymus schwanenfeldii Bleeker, 1854) TO pH VARIABILITY
Authors: Oktavia Nia , Prakoso Vitas Atmadi , Kamal Mohammad Mukhlis , Arifin Otong Zenal , Subagja Jojo , Kurniawan Kurniawan , Iswantari Aliati , Kusmini Irin Iriana , Irawan Deni , Cahyanti Wahyulia , Radona Deni , Putri Fera Permata , Bosman Ofan , Wibowo Arif , Kristanto Anang Hari , Gustiano Rudhy
Published: July 2024

Tinfoil barb Barbonymus schwanenfeldii is recognized as one of the potential aquaculture commodities in Indonesia. Nonetheless, lack of data on their environmental tolerance causing this issue to become essential to be investigated. The present study was carried out to assess the pH influence on growth and physiological response of juvenile tinfoil barb. Juvenile tinfoil barbs (TL: 5.5 ± 0.8 cm; BW: 2.4 ± 1.0 g) were treated with four pH level treatments (5, 6, 7, and 8) and three replications with the stocking density of 10 fish each aquarium. Fish were kept for 21 days and fed with commercial fish feed. In this study, pH 8 exposure resulted to lower growth of juvenile tinfoil barb compared to pH treatment 5 to 7 (p<0.05). In terms of survival rate, the results show significantly lower value at pH 8 treatment compared to those of pH 6 and 7 treatment (p<0.05), while it is not significantly different with pH 5 treatment (p>0.05). Additionally, this study found the highest value of glucose, cortisol, and aspartate aminotransferase (AST) on pH 8 treatment (p<0.05). On the other hand, pH 8 exposure led to the lowest creatinine, blood urea nitrogen (BUN), and ALP level (p<0.05). In conclusion, the optimal pH for juvenile tinfoil barb rearing ranged around 6-7.
GROWTH, IMMUNITY, AND RESISTANCE OF CATFISH (Clarias sp.) REARED IN BIOFLOC SYSTEM SUPPLEMENTED WITH Bacillus NP5 AGAINST Aeromonas hydrophila INFECTION
Authors: Suleman Gabriella Augustine , Widanarni Widanarni , Yuhana Munti , Afiff Usamah
Published: July 2024

Catfish Clarias sp. is one of the leading commodities in demand and has economic value. Low survival due to cannibalism and disease is a serious problem. To overcome these problems is application of bioflocs and probiotics Bacillus NP5. This study aimed to analyze the appropriate dose of Bacillus NP5 probiotic addition to the biofloc system to improve the health status, growth performance, water quality, and resistance to A. hydrophila. The catfish fry (Clarias sp.) with an average weight of 1.79±0.05 g was used in the experiment for 40 days, reared in tanks with the dimension of 60×30×35 cm3. The experiment applied a completely randomized design (CRD) of five treatments with three replicates, namely KN (negative control), KP (positive control), BFT (biofloc application without probiotic bacteria), BFT4 (biofloc application with Bacillus NP5 104 CFU mL-1), BFT6 (biofloc application with Bacillus NP5 106 CFU mL-1). Treatments tested were challenged with A. hydrophila density 104 CFU mL-1 by immersion, except the negative control. After 40 days of rearing, biofloc and Bacillus NP5 treatments had a significant effect (P < 0.05) on growth performance, immune response, water quality, total bacteria in water and the gut compared to the control treatment (P < 0.05). In addition, total A. hydrophila in liver, kidney and water were lower (P < 0.05) in BFT4 and BFT6 treatments than the control. The conclusion of this study is that the bioflocs supplemented with Bacillus NP5 improved the growth performance, immune response and resistance of catfish to A. hydrophila infection.
AQUAPONICS OF VANNAMEI SHRIMP (LITOPENAEUS VANNAMEI) AND WATER SPINACH (IPOMOEA AQUATIC FORSK) AT LOW SALINITY
Authors: Fahrur Mat , Dharmawan Trijuno Dody , Zainuddin Zainuddin , Chaidir Undu Muh , Makmur Makmur , Taukhid Imam , Syah Rachman
Published: July 2024

This research was conducted to assess the impact of salinity on the growth performance of Vannamei shrimp (Litopenaeus vannamei) and water spinach (Ipomoea aquatic Forsk) in a low salinity aquaponic system. Furthermore, the role of water spinach in using N and P nutrients from the culture media of vannamei shrimp was analyzed. The experiment was carried out for 35 days, with two treatments at 5 and 10 ppt and the growth performance of shrimp and water spinach was affected by salinity. Shrimp reared at 10 ppt exhibited higher growth rate, harvest size, and shrimp yield, along with lower feed conversion ratio (FCR) and water use compared to those reared at 5 ppt. Meanwhile, the performance of water spinach at 5 ppt salinity resulted in higher survival, plant height gain, root length gain, number of leaves, and yield of water spinach compared to 10 ppt salinity. The growth performance of water spinach decreased with increasing salinity and the efficiency in reducing N and P from the 5 ppt culture media was 1.3 times higher than 10 ppt. Water spinach showed better results in the 5 ppt salinity media than 10 ppt, while vannamei shrimp grew at 5 ppt. Therefore, 5 ppt salinity was recommended as a suitable condition for integrated cultivation of vannamei shrimp and water spinach in low-salinity aquaponics. Both species were compatible and complemented the role of each other in developing low-salinity aquaponics.
Hot Rods and Exploding Ova
Authors: Walddon David , Malmstrom Dawn
Published: July 2024

The Martino corpus of cookery manuscripts has been explored in depth; early on in Platina and the Rebirth of Man, in the comprehensive edition and translation, as well as the older standard translation of De Honesta Voluptate (On Honest Indulgence), in papers given at the Oxford Symposium on Food and Cookery, in the two translations of Martino’s Libre de Arte Coquinaria (The Book on the Art of Cooking), and in Terence Scully’s in-depth commentary on and translation of MS Bühler. However, in all of these explorations the recipe ‘Oua nel speto’ (Eggs on a spit) has not been discussed in detail and has certainly not been compared across the corpus. That is the focus of this paper which is accompanied by specially commissioned (contemporary) line drawings illustrating the techniques involved.
Demineralized, Freeze-Dried Allogeneic Bone Blocks With Suture Fixation Technique for Reconstruction of Maxillary Alveolar Bone Deficiency: A Case Series
Authors: Dong Chengzhi , Zheng Simin , Xia Zhuoheng , Chen Runzhi , Zheng Yuxin , Yang Fan , Wang Linhong
Published: July 2024

This study aims to evaluate the clinical outcomes of using demineralized, freeze-dried allogeneic bone blocks (DFDABB) combined with the periosteal vertical mattress suture (PVMS) technique for the reconstruction of severe horizontal alveolar bone deficiencies in the maxilla. In continuous horizontal maxillary defects cases, bone augmentation was performed using DFDABB and deproteinized bovine bone matrix (DBBM) filling the interstice. Subsequently, a resorbable collagen membrane was carefully placed over the graft surface, and both the membrane and bone graft were firmly secured using the PVMS technique. Linear changes were assessed through superimposed cone-beam computerized tomography scans obtained before the operation and after a healing period of 6–10 months. A total of 7 female patients with 10 bone blocks and 13 implants were included in this study. One of the wounds was slightly ruptured postoperatively without infection, and all implants showed successful osseointegration. The average alveolar ridge width at a point 5 mm below the crest was 4.52 ± 2.03 mm before bone graft and 9.79 ± 1.57 mm after implantation with an average increase of 5.26 ± 1.97 mm. Similarly, at a point 10 mm below the crest, the pregraft alveolar ridge width measured 7.23 ± 3.60 mm, and postimplantation, it expanded to 11.81 ± 2.90 mm, showing an average gain of 4.58 ± 2.01 mm. This case series demonstrates the successful application of DFDABB combined with the PVMS technique to achieve adequate bone width for implantation at severe continuous horizontal bone deficiency of the maxilla. DFDABB with the PVMS technique resulted in superior horizontal bone gain during maxillary bone augmentation with horizontal continuity deficiency. However, further studies are necessary to validate these findings.