bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of grafting on vegetative and reproductive traits of tomato
Authors: Rajametov Sh. N. , Jeong Hyo-Bong , Yang Eun-Young , Cho Myeong-Cheoul
Published: March 2024

Relevance. Tomato (Solanum lycopersicum L.) is one of the most important vegetables in the world. Every year the number of identified viruses and diseases increases, infection with which causes significant crop losses and significantly worsens the quality of agricultural products, especially in tomatoes.

   Material and methods. In the present study we compared the growth of the vegetative and reproductive traits of tomato plants ‘Dokia’, ‘TY Red 250’ and ‘Pilabi’ grated onto bacterial wilt (caused by Ralstonia solanacearum) and Fusarium wilt (Fusarium oxysporum) diseases tolerant rootstock “Spider” (Takii seed, Japan). The non-grafted (control - CT) and grafted tomato plants (GR) were transplanted on 4 March of 2021 to the four season (vinyl) greenhouse on substrate perlite (mixture of perlite no. 1 and no. 3) and cultivated until September 20.

   Results. The results showed that responses of the tomato cultivars to grafting combination was different, where agronomical traits depends on the each cultivar’s features can be ranged. The reduction of the values of stem diameter (SD), leaf length and width (LW), fresh fruit weight (FFW), fruit diameter (FD), fruit pericarp thickness (FPT) and fruit hardness (FH) with aging of plants and rising ambient temperature was detected. However, fruit soluble solids among all cultivars regardless of treatments were slightly increased. The index of fruit yield per truss (FYT) significantly decreased among all cultivars after 10th truss regardless of the treatments when the daily temperature increased from July to August. In grafted tomato ‘TY Red 250’ were identified the highest fruit yield per plants (FYP) than in CT plants, whereas in other tomatoes did not found similar differences between CT and GR plants.
Evaluating berries of everbearing garden strawberry vaieties for product quality and biochemical parameters in the conditions of Primorky kray
Authors: Chekushkina T. N. , Barsukova E. N.
Published: March 2024

Relevance. The garden strawberry (Fragaria × ananassa (Weston) Duchesne ex Rozier) is a widespread berry crop distinguished by its fast vegetative growth, early bearing age, and high yield and plasticity. Today everbearing (remontant) strawberry varieties gain in popularity due to their long fruiting period, and high yield and berry quality. Annually new foreign varieties appear on the Russian market. For this reason, it is important to study foreign garden strawberry varieties of different ecological and geographical origin and identify those of them that are adaptable to agro-climatic conditions of a given region.

   The research goal was to determine the biochemical and customer qualities of the garden strawberry varieties introduced in Primorsky kray and to select varieties with economically important traits for further breeding and production.

   Research methods. The research was carried out in the nursery of primary variety testing at FSBSI “FSC of Agricultural Biotechnology of the Far East named after A.K. Chaiki”. The following garden strawberry varieties of foreign breeding origin were used as the research object: Сabrillo (USA), Albion (USA), Florentina (Netherlands), Murano (Italy), and Bravura (Netherlands). The studied varieties were day-neutral and everbearing. Variety Elizaveta 2 was used as the control (Russian breeding origin; admitted to use in all regions of the Russian Federation). The following parameters were evaluated: total yield, average berry weight, maximum berry weight, berry size, the yield of marketable berries, and the content of dry matter, reduced sugars, and vitamin C. The accumulation of anthocyanins in berries was determined by a rapid assessment using a color scale. Records were made and scientific observations were conducted according to “Program and methods of variety testing of fruit, berry, and nut crops” (1999).

   Results. Based on the results of the research on the economically important traits of the everbearing day-neutral strawberry varieties introduced in Primorsky kray, the following varieties were selected: Cabrillo for yield (263.3 g/plant, control – 82.8 g/plant), Murano for the yield of marketable berries (81.3 %), and Bravura (15.5 g) and Florentina (15.2 g) for berry size. The highest content of dry matter was accumulated in berries of variety Аlbion (9.87%). The highest content of reduced sugars was found in varieties Cabrillo (7.16%), Florentina (7.09 %), and Аlbion (7.09 %); of vitamin C – in Florentina (60.30 mg/100 g), and of anthocyanins – in Murano (50 mg/100 g). Murano was established to be the most promising variety under the conditions of Primorky kray for the complex of its traits.
COMPLETENESS PROPERTIES OF TRANSITIVE BINARY RELATIONAL SETS
Authors:   Assiut University, Sayed O. R. , Sayed N. H. ,   New Valley University
Published: March 2024

The present paper is devoted to study some completeness properties of transitive binary relational set, i.e., a set together with a transitive binary relation (so called t-set). We hope that the results of our paper will be a starting point for a sufficiently general but simple theory of objects that are suitable for modelling various aspects of computation and useful in modern applications of domain theory to general topology and mathematical analysis.
REFINEMENTS OF SINGULAR VALUE INEQUALITIES FOR POSITIVE SEMIDEFINITE MATRICES
Authors:   Southeast University Chengxian College, Ma Rong , Zhang Feng
Published: March 2024

We obtain several inequalities relating the singular values of and for positive semidefinite matrices These results are refinement of Audeh’s result.
ACR-INDEX : A NEW MATHEMATICAL MEASURE CONSIDERING THE ARTICLE’S AGE, CITATIONS, AND RANK (ACR)
Authors:   Rutgers University, Pham Hoang
Published: March 2024

This paper introduces a new index, called ACR-index, to measure an individual’s scientific research output based on their publications, by taking the age, number of citations and rank of each paper published into account. The paper presents several real author examples to illustrate the proposed ACR-index and compare it to several related indices such as h-index, g-index, and i10-index. We believe that the proposed index provides a realistic measure that reflects the researchers’ impacts and their research accomplishments in the field especially to early- and mid-career researchers. It should be noted that the two researchers who have the same h-index will unlikely have the same ACR-index since it depends on the paper’s-age, citations and rank of each publication. Based on a small (a couple of dozen individuals) sample size, we observe that in the science and engineering field, on average, ACR-index scores between 8-12 seem common for assistant professors, and that individuals who have ACR index of 30 after 10 years of research activity characterize outstanding researchers; and those with ACR index of 60 after 30 years characterize unique outstanding researchers.
MATRICES OVER ROOTS OF UNITY AND PERMANENT
Authors:   Sharif University of Technology, Fanaï H.-R.
Published: March 2024

For any prime integer let be the group of p-th roots of unity. It is shown that there is no matrix over with vanishing permanent if with
The Influence of Perception of Skin Aging on Behavioral Intention to Buy Inner Beauty
Authors:   The Korean Society of Beauty and Art, An Yi-Sook , Kim Min-Jeong
Published: March 2024

There has been a rising demand for rational and professional skincare habits to slow down or prevent skin aging. Under these circumstances, inner-beauty products have recently played a major trend. This study attempted to investigate the perception of skin aging and inner-beauty product purchase behavior intention-related factors against adult women and analyze their correlations, and the results found the followings: First, the perception of skin aging had a statistically significant influence on inner-beauty purchase behavior intention. Second, the perception of skin aging revealed a statistically significant effect on skincare behavior. Third, skincare behavior affected inner-beauty purchase behavior intention with statistical significance. Fourth, skincare behavior between perception of skin aging and inner-beauty purchase behavior intention revealed a statistically significant influence as a mediator variable. The above results confirm that perception of skin aging and skincare behavior such as use of cosmetics have an influence on inner-beauty purchase behavior intention. It is anticipated that the study results would be available as basic data for developing inner-beauty products and marketing strategies.
Revitalizing Agriculture: Role of Cow Dung and Urine in Promoting Sustainability
Authors: Patra Dhananjay , Bharti Nalin
Published: March 2024

Cow dung and urine have been used as natural fertilizers and pesticides for centuries in India and recent scientific research has confirmed their effectiveness in promoting sustainable agriculture. Cow dung is a rich source of organic matter, essential nutrients such as nitrogen, phosphorus and potassium and beneficial microorganisms that can enhance soil fertility and plant growth. On the other hand, cow urine contains high levels of nitrogen, urea and minerals that make it a potent fertilizer and pest repellent. Currently, there is growing research attention towards exploring the potential applications of cow dung and urine for sustainable agriculture. This study highlights the various uses of cow dung and urine, including their role in transforming from chemical to natural farming, converting fallow to fertile land and promoting sustainable agriculture to develop a healthier and more harmonious relationship between humans and the environment.
PATNJA I NADA U DOBA ANTROPOCENA
Authors: ĐURIĆ JELENA
Published: March 2024

U tekstu je reč o tome kako se iz sagledavanja patnje, koja je ugrađena u ljudsku prirodu, i koja je u doba antropocena preplavila planetu, otkriva pojam radikalne nade kao orijentacije u situaciji kada sve izgleda beznadežno. Ontološka ljudska ranjivost i sve očiglednija konačnost do sada poznatog sveta, kojim dominiraju odnosi moći i sukobi, navodi na razmatranje koncepta radikalne nade. Uprkos paradoksalnosti nadanja nečem što nema odrediv predmet i što po prirodi svog pojma ostaje neodređeno, čoveku je potrebna nada kao podsticaj na preobražaj postojanja. Potraga za takvm preobražajem može se dubinski nadahnuti mišlju Serena Kjerkegora.
PLOTINOVA PARADIGMA FILOZOFSKOG MIŠLJENJA
Authors: KEŠELJEVIĆ LUKA
Published: March 2024

U radu se razmatra temeljni aspekt Plotinove filozofije, njene osobenosti i značaj za Antiku. U prvom dijelu govori se o njegovom značaju sa globalnog aspekta, a pristupa se istorijski i filozofski. U drugom dijelu riječ je o odnosu Plotina i njegovih prethodnika, kao i o afirmaciji antičke metafizike. U trećem dijelu riječ je o udaljavanju od antičke epohe. Završni dio govori o posebnom položaju Plotinove filozofije, ističući ga kao sponu između Starog i Srednjeg vijeka.
Advances in understanding nitrogen cycling in soil
Authors:   University of Guelph, Canada, Earl-Goulet Samantha , Wagner-Riddle Claudia ,   University of Guelph, Canada, Van Eerd Laura ,   University of Guelph, Canada, Congreves Kate ,   University of Saskatchewan, Canada
Published: March 2024

Anthropogenic alterations in the nitrogen cycle, dominantly through synthetic fertilizer applications, have allowed for greater crop production since the nineteenth century. However, these changes have also allowed for rapid increases in environmental adverse nitrogen loss pathways such as nitrate leaching, and nitrous oxide emissions. Advancing knowledge on how nitrogen cycling processes are impacted by environmental conditions and management practices provides an insight in how the NUE of cropping systems can be increased. In order to improve the NUE of cropping systems, nitrogen supply must be re-synchronized with crop demand; therefore, supporting productivity whist reducing economic and environmental losses. To accomplish this, a detailed understanding of nitrogen fixation, mineralization, volatilization, nitrification and denitrification is required. This chapter outlines the recent advances in knowledge surrounding nitrogen cycling processes, and the main issues researchers and farmers are presented with when attempting to optimize productivity whilst minimizing adverse economic and environmental nitrogen losses.
Developments in the use of enhanced efficiency nitrogen fertilizers
Authors:   The University of Melbourne, Australia, Lam Shu Kee , Pan Baobao ,   The University of Melbourne, Australia, Liang Xia ,   The University of Melbourne, Australia, Mosier Arvin R. ,   The University of Melbourne, Australia, Chen Deli ,   The University of Melbourne, Australia
Published: March 2024

To sustainably feed a growing population, we need to increase the efficiency of nitrogen (N) fertilizers while reducing their negative impacts on the environment. Enhanced efficiency fertilizers (EEFs) show promise in reducing the loss of reactive N (Nr: all species of N except N2) to the environment. EEFs work by inhibiting the activities of enzymes involved in soil N processes (urease and nitrification inhibitors) and regulating the release of N from fertilizers in response to soil and environmental conditions (controlled-release fertilizers). However, the limitations of currently available EEFs have not been well addressed. Further research efforts from multi-disciplinary expertise are needed to make a breakthrough. It is important to consider the negative impacts of Nr loss on human and ecosystem health and to monetize the avoided societal costs from using EEFs to incentivize their adoption. This will avoid enormous spending on cleaning up Nr pollution while ensuring global food security.
Dynamic models for addressing complexities of nitrogen management in maize production
Authors:   Cornell University, USA, van Es Harold M. , Melkonian Jeff ,   Cornell University, USA, Marjerison Rebecca ,   Yara North America, USA
Published: March 2024

Among essential crop nutrients, nitrogen is the greatest management challenge due to highly dynamic transformations and losses. Applied N rates may be insufficient for optimum yields, or substantially exceed crop needs. The latter results in water, climate, energy and air pollution concerns, especially with maize (Zea mays L.) production. The economic optimum N rate is impacted by several features of a production environment, including inherent soil and climate characteristics, weather, agronomic management, and economic/risk factors. Conventional N calculators for maize are static, generalized and inherently imprecise. Adaptive maize N management in the 4R context can be supported by dynamic simulation models that incorporate the complexities of production environments and weather. As a case study, the Adapt-N technology is discussed with features on critical factors affecting N dynamics and the estimation of an EONR for maize production environments.
Characterizing soil nitrogen availability to improve nitrogen fertilizer recommendations
Authors:   USDA – Agricultural Research Service, USA, Franzluebbers Alan J.
Published: March 2024

Nitrogen (N) fertilizer is one of the most common field production inputs in agriculture. It is necessary to achieve high productivity but threatens ecosystem integrity as it is readily transported to water bodies and emitted to the atmosphere. This chapter reviews a series of studies conducted by investigators at the Soil Ecology and Management Lab in Raleigh, North Carolina, to understand how inherent soil N supply might supplement the need for N fertilizer inputs in corn and forage management systems. The chapter also discusses relevant research prior to 2013 and subsequent research on the correlation and calibration of soil-test biological activity with soil N availability. Laboratory incubations, greenhouse growth trials and yield response trials in the field provide clear evidence that soil-test biological activity can be considered a simple, rapid and robust technique to estimate soil N availability from mineralizable components. A new approach for adjusting N fertilizer recommendations is also provided.
Social Partnerships in Modern Russian Schools as a Tools for Creating a Rich Educational Environment and Overcoming Inequality
Authors: Kozlova Maria , Simonova Olga , Madfes Olga
Published: March 2024

The aim of this article is to analyze the potential of social partnerships at schools when it comes to solving such problems as saturation of the educational environment and overcoming educational inequality. Schools are considered as a special environment that accumulates financial, cultural, and social resources. Post-Soviet schools adopting a course towards neo-managerialism would involve relative autonomy of schools and the stimulation of competition between them. As a result, the functions and forms of social partnerships at schools are undergoing transformation in comparison with the Soviet period. It is in the logic of neo-managerialism that social partnerships are presented as the primary means of overcoming educational inequality. The empirical foundation consisted of 88 interviews with employees of secondary educational institutions of the Perm Region. Analyzing the interviews allowed for explicating interpretations of the meanings and the evaluation of the effects of social partnerships at schools by the participants of the educational process. On this basis the possible risks of social partnerships are highlighted, such as: the risk of escalating educational inequality between schools and the intrusion of schools through partnerships into the sphere of state-unregulated experimentation. The disproportion is revealed in the breadth, diversity and sustainability of partnerships between “prestigious” schools and schools that do not rank particularly high. This is consistent with the general post-Soviet trend of differentiation of schools and, accordingly, varying degrees of success in developing a diverse educational environment, which leads to the risk of increasing educational inequality. The specific features of local, organizational and structural barriers that prevent schools from establishing social partnerships are analyzed.
Efektivitas Program "Ngapling" Ngaspal Keliling di Kabupaten Lumajang Pada Tahun 2019-2021
Authors: Pradila Riska Ayu , Suji Suji , Suryawati Dina
Published: March 2024

Pemerintah Kabupaten Lumajang melalui Dinas Pekerjaan Umum dan Tata Ruang membuat program NGAPLING (Ngaspal Keliling) yang tujuannya untuk memberikan pelayanan yang baik kepada masyarakat Lumajang dalam mengatasi jalan berlubang secara cepat dan singkat. Salah satu hal yang melatarbelakangi diterapkannya program ngapling adalah kondisi sistem jaringan jalan di Kabupaten Lumajang di tahun 2019 yang kondisinya rusak berat bertambah jika dibandingkan tahun 2018, yaitu naik 38,25% dari 113,83 km menjadi 157,37 km. Ngapling merupakan sebuah program bersistem tambal sulam dengan berfokus pada kerusakan dibawah 15% sesuai dengan  surat keputusan (SK) Plt. Kepala Dinas Pekerjaan Umum dan Tata Ruang Kabupaten Lumajang Nomor 188.45/037/427.59/2021. Meskipun hanya berfokus pada kerusakan dibawah 15%, diharapkan dengan adanya program ini dapat memperpanjang umur jalan dan merupakan gerakan cepat sehingga tidak terjadi kerusakan yang lebih parah pada jalan Kabupaten Lumajang. Karena fokus dalam penelitian ini adalah efektivitas program ngapling (ngaspal keliling) maka konsep yang digunakan adalah kebijakan publik dengan menggunakan indikator efektivitas Ripley. Indikator efektivitas menurut Ripely memiliki 7 indikator yaitu akses, cakupan, frekuensi, bias, ketepatan layanan, akuntabilitas, kesesuaian program dengan kebutuhan.

            Tipe penelitian yang akan diambil dalam penelitian ini adalah jenis penelitian deskriptif dengan pendekatan kualitatif. Teknik pengumpulan data menggunakan teknik obeservasi , wawancara dan dokumentasi. Teknik penujian keabsaan data dalam penelitian ini menggunakan standart kredibilitas dengan pemeriksaan menggunakan teknik tringulasi sumber dan tringulasi teknik. Sedangkan untuk teknis analisis data menggunakan analisis Miles and Huberman.

            Hasil penelitian ini menunjukkan bahwa pelaksanaan program Ngapling di Kabupaten Lumajang, dapat ditarik kesimpulan bahwa dalam proses pelaksanaan program ngapling di Kabupaten Lumajang, peneliti memperoleh hasil penelitian yakni pelaksanaan program ngapling sudah efektif. Hal tersebut dapat dilihat dari hasil dari proses penelitian yang telah dilakukan yang menunjukkan indikator keefektifan.
THE INFLUENCE OF CORPORATE SOCIAL RESPONSIBILITY CERTIFICATION ON CONSUMER ACCEPTANCE IN THE NETHERLANDS MARKET: A COMPARATIVE STUDY OF COMPANIES FROM INDONESIA AND THE NETHERLANDS
Authors:   Faculty of Economics and Business, BSc International Business, University of Groningen, Groningen, Indratno Haidar Rahmady
Published: March 2024

This study explores the relationship between Corporate Social Responsibility (CSR) certification, product country of origin, and consumer acceptance in the Netherlands market, focusing on coffee beans. Rooted in Sen & Bhattacharya (2001) and Matten & Moon's (2008) insights, the research considers the moderating effect of the country of origin, drawing on Peterson & Jolibert's (1995) perspectives. By using a randomized detailed survey and a controlled experiment from 200 participants, the study examines the Netherlands market consumer perceptions of companies with high levels of CSR certification from a developed country, the Netherlands, and a developing country, Indonesia. Results confirm a positive correlation between a high level of CSR certification and consumer acceptance in the Netherlands. The influence of the Netherlands as the product's origin positively moderates this relationship. Surprisingly, products from Indonesia also show a positive impact, contrary to expectations. The findings stress the strategic role of CSR certification for firms in the Netherlands market, irrespective of origin. However, caution is advised due to limitations, including potential bias and a small sample size. In conclusion, this research contributes nuanced insights for businesses navigating global markets, emphasizing the need for a comprehensive understanding of CSR's impact on consumer acceptance.
AN ANALYSIS OF THE EFFECT OF INSTITUTIONAL DISTANCE ON THE LEVEL OF CONTROL OF MULTINATIONALS IN THE INDONESIAN MEDIUM-HIGH AND HIGH TECHNOLOGY INDUSTRY
Authors:   Faculty of Economics and Business, University of Groningen, Groningen, Netherlands, Pramuditya Rio
Published: March 2024

Multinational corporations (MNCs) significantly contribute to globalizing research and development, particularly in emerging economies like Indonesia. As Indonesia aims to achieve the "Making Indonesia 4.0" vision, attracting foreign investment to bolster its medium-high and high technology industry becomes crucial. This study conducts an exploration within institutional theory concerning the influence of 'distance' measures on the level of control exerted by MNCs in a host country. Focusing on Indonesia's medium-high and high technology industry, the research investigates the relationships between formal and informal institutional distances and MNCs' strategic control decisions. Statistical analyses support the hypotheses, affirming the significance of both formal and informal institutional distance in shaping MNCs' inclination toward majority stake deals in the targeted industry. The findings contribute to a nuanced understanding of MNCs' strategic decision-making in an industry specific context. Which necessitates MNCs to balance managing partnerships to reduce strategic control in a formally distant host country, while at the same time maintaining a strong grip on technology-intensive activities to mitigate risks tied to reduce interdependence in an informally distant host country.
ANALYZING PUBLIC HEALTH CONCERNS THROUGH TEXT MINING AND SOCIAL NETWORK ANALYSIS: A CASE STUDY OF COVID-19 PUBLIC OPINION ANALYSIS FROM ONLINE COMMUNITY FORUMS IN TAIWAN
Authors:   Associate Professor, Center of Holistic Education, Mackay Medical College, Chang Shun-Chuan
Published: March 2024

In the past, many quantitative studies in public health relied on traditional descriptive statistical data and less on analyzing unstructured text data. However, in the era of close online communication, a huge amount of text information related to public health issues is generated in online communities every day. COVID-19 pandemic should be one of the most important public health events in Taiwan since 2020. Many people express their views and feelings on the epidemic issue in online forums. In this research, the aim is to apply text mining and social network analysis to analyze the sentiment and topics related to COVID-19 in PTT, the most popular online community forum of social media in Taiwan. We used topic modeling to extract COVID-19 related topics and keywords, as well as sentiment analysis to explore the attitudes and emotional tendencies of the online community towards various issues, and data visualization methods such as word clouds and network graphs to present the research results. Additionally, we plan to conduct cluster analysis on the authors and accounts of the articles to determine if there is a phenomenon of specific groups influencing the COVID-19 public opinion. The expected outcome of this research is to provide a reference for the implementation of public health policies and to promote the value of sentiment analysis in public health management. After conducting text mining analysis on the articles published in the COVID-19 forum of PTT in 2021, especially the period of Taiwan's COVID-19 escalation from June to August 2021. The overall discussion volume and sentiment can be roughly divided into three peaks. The first peak started to rise in mid-May and reached its peak in mid-June. The second peak occurred in mid-July, and the negative sentiment was significantly higher than the positive sentiment. The last peak occurred in late August and had the highest discussion volume among the three peaks. In each peak of sentiment, negative sentiment was mostly higher than positive sentiment. Our suggestion is to focus on the following research results that Public health managers can use daily text mining results by our way to assist in judging public reactions under current epidemic policies, and the positive and negative sentiment levels in sentiment analysis can reflect whether policies may lead to a crisis outbreak. Observing the subsequent changes in sentiment can avoid affecting the implementation effectiveness of the next policy or causing a more serious public opinion crisis. This research hopes to promote the value of sentiment analysis in public health management by visualizing the complex online forum opinions into easy-to-understand charts, which can serve as a reference for decision-makers in judging online public opinion.
THE IMPACT OF INFORMATION TRANSPARENCY ON FIRM PERFORMANCE: EVIDENCE FROM CHINA
Authors:   Student of Finance, Fang Yangming
Published: March 2024

Nowadays, with the concern of the public for corporate social responsibility, firms are increasingly concerned with social responsibility, and they need to know whether social responsibility is favourable for their profit. The study focuses on 3,536 Chinese firms and collects the data of them from 2006 to 2021. The study analyses the data with the method of regression to find the relationship between information transparency and ROA, as well as the moderating effects of voluntary disclosure and company loss. We also run regressions with a lagged score of information transparency instead of the current score as a robust check. After analysis, we find that a high level of information transparency is significantly beneficial for a great firm performance. Additionally, this relationship exhibits an increasing marginal effect in the firms in which information disclosure is voluntary and the firms that are facing losses. The findings of this study provide useful guidance for firm managers about whether to develop high information transparency.
Características clínicas, bioquímicas y radiológicas en niñas con pubertad precoz central atendidas en un hospital público de Lima
Authors: Cabello-Sánchez Almendra , Salinas-Barreto Sergio , Loza-Munarriz Cesar , Cabello-Morales Emilio
Published: March 2024

Objetivo: Describir las características clínicas, bioquímicas y radiológicas en niñas con pubertad precoz central (PPC) atendidas en un hospital público de Lima. Material y métodos: Estudio tipo serie de casos. Se revisaron historias clínicas de niñas con diagnóstico de PPC. Se excluyeron niñas con pubertad precoz periférica (PPP), telarquia aislada y malformaciones. Se calculó el Z-IMC, Z-talla genética, Z-talla y proyección de talla final adulta (PFTA). Se utilizó t-Student, t-test, Wilcoxon y Shapiro-Wilk, mediante el software STATA versión 17. Se consideró estadísticamente significativo p<0,05. El estudio fue aprobado por el CIE de la UPCH y del HCH. Resultados: Se revisaron 86 historias. La edad media cronológica fue 8,16±1,09años y la edad media ósea fue 10,33±1,27años (p≤0,001) entre las medias de la edad ósea y la edad cronológica, el Z-talla de la niña y el Z-talla genética asimismo la PTFA y la talla genética (TG). Se encontró M2(19,7%), M3(59,3%) y M4(20,9%). Normopeso (27,9%), sobrepeso (30,2%) y obesidad (41,8%). La mediana de LH fue 0,6 (RIQ:0,4-1,8) y FSH fue 3,4 (RIQ:2,1-5,2). Conclusión: La edad cronológica al diagnóstico fue tardía con una edad ósea significativamente mayor respecto a la cronológica. La talla de la niña respecto a su TG fue significativamente mayor. La PTFA fue significativamente menor que la TG. La mayoría presentó desarrollo mamario avanzado, sobrepeso y obesidad.
Examining belief adjusment model and framing effect on the audit materiality level decision making
Authors: Febriyani Sarwindah  , Almilia Luciana Spica , Mustafida Nurul
Published: March 2024

The purpose of this study is to examine whether or not there is a difference in the decision-making of external auditors in determining the level of audit materiality between participants who get good news followed by bad news and those who get bad news information sequences (bad news) followed by good news (good news) with a step-by-step and end-of-sequence information presentation pattern in the positive frame or negative frame. The research method used in the research is the mixed design experiment method (between and within the subject) which manipulates the independent variables of the order of evidence (good news followed by bad news and bad news followed by good news) and framing effect (positive frame or negative frame) in the presentation pattern Step by Step and End of Sequence. Participants in this study were 150 students of the Bachelor of Accounting study program at Hayam Wuruk Perbanas Surabaya University with 300 experiment data. This study uses the normality test and the Kruskall-Wallis H test. The results of this study indicate that the Step-by-step presentation pattern can cause a recency effect when receiving information with a sequence of evidence of good news followed by bad news and bad news followed by good news both in the series, with the positive or negative frame, and the results obtained if the information is presented with an End of Sequence presentation pattern with information and a sequence of evidence of good news followed by bad news or bad news followed by good news there is no difference (no order effect) either in the framing effect (positive frame and negative frame).
Perbedaan Hasil Belajar Ditinjau Dari Gaya Belajar Siswa Pada Mata Pelajaran IPA Di MIN 2 Samarinda
Authors: Adawiyah Rabiatul
Published: March 2024

tujuan dari penelitian ini adalah untuk mengetahui perbedaan hasil belajar ditinjau dari gaya belajar siswa pada mata pelajaran IPA di MIN 2 Samarinda. Penelitian ini adalah penelitian kuantitatif dengan metode survei di mana dalam penelitiannya digunakan untuk mengumpulkan data dalam bentuk angket yang kemudian disebarluaskan kepada responden, dengan jumlah populasi sebanyak 126 siswa lalu sampel yang di gunakan sebanyak 115 siswa. Teknik pengumpulan data menggunakan instrumen penelitian angket dengan skala likert dengan dibantu dokumentasi, tempat penelitian yaitu MIN 2 Samarinda. Hasil yang diperoleh berdasarkan uji faktorial rancangan acak lengkap 3 faktor bahwa nilai sig yaitu sebesar 0,000 dimana 0,000 < 0.05. Sehingga hasil uji faktorial rancangan acak lengkap 3 faktor ada perbedaan hasil belajar. Yaitu adanya perbedaan hasil belajar ditinjau dari gaya belajar siswa pada mata pelajaran IPA di MIN 2 Samarinda. Dapat disimpulkan bahwa perbedaan hasil belajar yang diperoleh dari penelitian ini adalah gaya belajar visual sebesar 76.7073, gaya belajar auditori sebesar 84.4318, dan gaya belajar kinestetik sebesar 79.7000. Sehingga ketiga gaya belajar tersebut terdapat perbedaan dari hasil belajarnya.
La innovación social desde la ciudadanía para avanzar en la gobernanza democrática de las ciudades: estudio del Ajuntament de València
Authors: Talón Villacañas Alba , Belda-Miquel Sergio , Cuesta Fernández Iván , Palau Salvador Guillermo
Published: March 2024

El marco discusivo-institucional europeo sobre innovación social y gobernanza democrática local se caracteriza por plantear el ámbito local como espacio estratégico donde promover nuevas soluciones a los problemas sociales actuales y por promover iniciativas ciudadanas innovadoras que cogestionen bienes y servicios públicos. Este estudio tiene como objetivo principal conocer cómo la política y la gestión pública local están incorporando y significando el marco discursivo-institucional de la Innovación Social Ciudadana como forma de avanzar en la gobernanza democrática. A través de una metodología cualitativa, centrada en entrevistas semi-estructuradas, se realiza un análisis crítico del discurso desde las tesis de Fairclough. Las percepciones de las personas que trabajan en la gestión pública del Ajuntament de València ilustran la relación entre discurso, práctica discursiva y práctica social necesaria para responder al objetivo sobre el proceso de significación. En este sentido, la ciudad de València refleja en sus planes y estrategias más recientes tanto una incorporación de estos objetivos como una legitimación de prácticas previas sobre la base de los mismos. Finalmente, el caso ilustra las complejidades y la diversidad en la aplicación de este marco europeo a las realidades urbanas.
Keterampilan Berbicara berdasarkan Rasa Percaya Diri Siswa pada Mata Pelajaran Bahasa Indonesia Kelas III MI Miftahul Huda Sukolilo Kecamatan Jiwan Kabupaten Madiun
Authors: Zakiya Fachrunnisa  , Ayunda Riska Puspita
Published: March 2024

Good language learning does not ignore language skills. Language skills consist of four parts, namely listening, speaking, reading, and writing skills. Basically everyone has self-confidence. At the time of expressing their opinions, there were students who dared, there were also those who did not dare to express their opinions orally. Confidence is one of the factors that influence speaking skills. The aims of this study were (1) to describe students' speaking skills in class III Indonesian subject, (2) to describe students' self-confidence in class III Indonesian subject, (3) to describe speaking skills based on students' confidence in subject Grade III Indonesian. The approach used is a qualitative approach. The type of research used is descriptive research. Data collection techniques using tests, questionnaires, observations, interviews, and documentation. The data analysis technique uses data reduction obtained from the results of the assessment of the speaking skill test and the results of the self-confidence questionnaire. Researchers present data in the form of narrative. In this study, the results obtained were (1) students' speaking skills in the very good category were 3 students, 10 students in the good category and 3 students in the sufficient category. (2) students' self-confidence in the very high category of Indonesian subjects was 3 students, 10 students in the high category and 3 students in the sufficient category. (3) the results of speaking skills based on students' self-confidence, namely that students who have very high self-confidence have very good speaking skills, students who have high self-confidence have good speaking skills, and students who have sufficient self-confidence have sufficient speaking skills.
Protecting Shallow Aquifer During Entire Well Lifecycle Through Integral Formations Isolation
Authors: Ahmed Ahmed Hassan , Srivastava Manish , Al Hosani Ahmed , Ali Mohamed Saleh
Published: March 2024

Restoration of the cap rock to ensure lateral isolation as barrier is crucial to avoid any contamination of shallow aquifer(s). As per federal Law shallow aquifer shall be protected from hydrocarbon and water bearing formations during entire well life cycle. Attention should be paid to the sub-surface barriers starting from design of a new well till the phase of permanently plugged and abandoned (P&A) where the intention of never being re-use or re-enter the well.

Keeping in mind the risk of contamination of aquifers a detailed requirement has been established to ensure the isolation between water or hydrocarbon formation(s) and shallow aquifer(s) during design and construction phases by achieving integral annulus cement.

During the operation phase the barriers are monitored and validated, in case of abnormality diagnostics are performed to mitigate the risk.

At the end of well life cycle, it must be permanently P&Aed. A documented process has been implemented with enough, type and position of well barriers to prevent undesired hydrocarbon flow from reservoir to the aquifer or to surface.

A robust well integrity management system has enabled the delivery of high quality of wells. This includes proper monitoring and verification of barriers during the well construction process.

This has ensured protecting shallow aquifer from any source of inflow thereby complying to the local regulations that requested to first detect source of inflow, hydrocarbon formation that shall be protected. at the time of P&A the sealing formation in between them shall have a good cement in addition to that wellbore shall be plugged with a material that provide sealing, bonding and durability as the well will not be reentered. The process ensures capturing information for the well, right from the construction stage, any changes happened during the well intervention and till the P&A stage.

During the operations stage the barriers are monitored and tested to ensure that they are performing as required.

Implementing the robust process has ensured that the contamination of the shallow aquifers is minimized and ensured no loss of valuable hydrocarbon to these aquifers.

The process flow has been based to ensure compliance with the local Federal law and build on the international practices with inputs from local condition and lesson learnt. The process also has inputs from the concession holders to make the process cost effective and robust.
Evaluating New Chemical Treatments to Decrease Water Soluble Organic (WSO) Content from Produced Water Discharge
Authors: Venancio F. , Oliveira A. , Silva S. C. , Kina A. Y. , Mutch K.
Published: March 2024

During the offshore disposal of produced water, an oil sheen is sometimes visible at the surface, even when the oil content is within acceptable limits. Water Soluble Organics (WSO) are well known as one of the main causes of the appearance of sheen. The most common approach to inhibiting sheening is the acidification of oil, where some organic acid is added prior the oil treatment system. However, high acid volumes (3–5 tons/day at 500-ppm dosage) raise asset integrity concerns. This work investigates a cost-effective and sustainable alternative to acidification for sheen control. Two products were tested: Product A, an advanced emulsion breaker with integrated WSO removal properties for treatment of crude oils, and Product B, a flocculant agent with integrated WSO removal properties for treatment of produced water. With Product A, the results showed a 55% WSO reduction compared to the blank, compared with a 40% reduction with the emulsion breaker upon acidification. With Product B, the results showed a 98% WSO reduction against 71% with a reference flocculant only. Combined, these new products can potentially decrease WSO levels of the disposed produced water and inhibit the appearance of sheen. This is an alternative protocol to the acidification method currently used in offshore platforms to avoid sheen appearance. The far lower dosages (80 and 40 ppm for Products A and B, respectively) compared to the acid treatment (around 500 ppm) could reduce the overall integrity management risk, the chemical demand by 83%, and the Scope 3 CO2 emissions by up to 90%.
An Economic Nano-Clay for Produced Water Barium Reuse to Precipitate Sulfate in Seawater
Authors: Hou J. , Huang T. , Aljurred N. W. , Alghunaimi F. I.
Published: March 2024

The presence of sulfate ions in seawater represents potentials of scaling and formation damage problems in upstream applications when combined with high concentrations of calcium, barium or strontium ions often found in formation waters. It has been proved that barium ions are effective to precipitate sulfates as BaSO4. In oil production processes, underground barium ions will be produced out with formation water. Barium concentrations in produced water can be up to thousands ppm. It is economic and eco-friendly to reuse the barium to precipitate sulfates in seawater.

This work provides a nano-sized aluminum hydro-silicate clay as the adsorbent to capture and release barium for reuse. The barium concentrations were determined using inductively coupled plasma mass spectrometer to evaluate barium adsorption/desorption efficiencies. In a specific barium reuse workflow, first, the adsorbents were immersed in produced water (barium ions from 100 ppm to 2,000 ppm) for the adsorption of barium. Then the nano-clay with barium was collected by centrifuge and immersed into a low sulfate water. The solutions were shaken for a certain time to release barium ions. After the nano-clay was removed, a high barium concentration water was obtained. Next the water was mixed with seawater to precipitate sulfates as BaSO4.

After optimizing the adsorption/desorption of barium ions on the nano-clay at different pH conditions, it is found the nano-clay will capture barium in a weak base environment (pH 9~11) with adsorption amount 100% higher than at medium condition. And more than 20% barium ions on the adsorbent is released in a weak acid condition (3~5). The results also presented the nano-clay successfully collected barium ions from a barium solution of 500 ppm, and the collected barium ions were reused to precipitate sulfate as BaSO4 by mixing with seawater (sulfate > 4000 ppm, total dissolved solid > 50,000 ppm).

This work intends to provide an economic nano-clay and an effective procedure to reuse barium from oil field produced waters to precipitate sulfate in seawater. The sulfate removed waters can be used for hydraulic fracturing, drilling fluid, waterflooding, and other oilfield applications. This work simultaneously treats the sulfate containing seawater and barium containing produced water with lower cost and more friendly impact on the environment.
Intelligent Water Conformance: A Novel Relative Permeability Modifier for Carbonate Formations
Authors: Wang Xiaolan , Spurr Naima , Gray Billy , Lant Kim
Published: March 2024

Excessive production of water and aqueous fluids from oil and gas wells could pose problems such as reduced well productivity and increased operational costs. The relative permeability modifier (RPM) is an effective solution compared to other conventional water control methods to reduce associated processing and disposal costs, while also extending the productive life of the well. Instead of indiscriminately shutting off fluid flow into the wellbore, the RPM fluid is pumped into the formation and targets only the water phase of the produced fluids, and not the hydrocarbons. As a result, water production is selectively restricted while oil and gas production continues unimpeded.

Currently, most RPM technologies applied in the field are intended for sandstone formations. This paper illustrates a newly developed RPM specifically designed to address water control for carbonate reservoirs (RPM-T). The RPM developed in this work has been rigorously tested under varying temperature, concentration, and mineralogy conditions. Fluid compatibility, packed-bed and core-flow testing have been performed to develop this RPM-T for water conformance.

The ability of the potential RPM-T candidates to confine water flow was screened by carbonate sand-packed columns. Laboratory core flow testing was performed using carbonate core plugs to measure regain permeability from 200°F to 300°F. Laboratory results indicate RPM-T can reduce permeability to water by more than 85% while having minimal impact on the permeability to oil (oil permeability maintaining > 80%). RPM-T also showed excellent thermal stability by registering its effectiveness at 300°F and above. The novel RPM-T developed in this work was shown to work for both carbonate and sandstone formations. This implies a greater versatility in application and reduction in surface inventory for mixed-lithology fields.

The RPM-T improves well economics by significantly reducing costs due to water treatment, disposal, and conventional workovers, while increasing oil or gas production through enhanced drawdown and hydrocarbon inflow. It also enables reduced CO2 emissions due to smaller volumes of produced water for surface treatment, handling, and disposal.